1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13493
13494
13495
13496
13497
13498
13499
13500
13501
13502
13503
13504
13505
13506
13507
13508
13509
13510
13511
13512
13513
13514
13515
13516
13517
13518
13519
13520
13521
13522
13523
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13559
13560
13561
13562
13563
13564
13565
13566
13567
13568
13569
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13589
13590
13591
13592
13593
13594
13595
13596
13597
13598
13599
13600
13601
13602
13603
13604
13605
13606
13607
13608
13609
13610
13611
13612
13613
13614
13615
13616
13617
13618
13619
13620
13621
13622
13623
13624
13625
13626
13627
13628
13629
13630
13631
13632
13633
13634
13635
13636
13637
13638
13639
13640
13641
13642
13643
13644
13645
13646
13647
13648
13649
13650
13651
13652
13653
13654
13655
13656
13657
13658
13659
13660
13661
13662
13663
13664
13665
13666
13667
13668
13669
13670
13671
13672
13673
13674
13675
13676
13677
13678
13679
13680
13681
13682
13683
13684
13685
13686
13687
13688
13689
13690
13691
13692
13693
13694
13695
13696
13697
13698
13699
13700
13701
13702
13703
13704
13705
13706
13707
13708
13709
13710
13711
13712
13713
13714
13715
13716
13717
13718
13719
13720
13721
13722
13723
13724
13725
13726
13727
13728
13729
13730
13731
13732
13733
13734
13735
13736
13737
13738
13739
13740
13741
13742
13743
13744
13745
13746
13747
13748
13749
13750
13751
13752
13753
13754
13755
13756
13757
13758
13759
13760
13761
13762
13763
13764
13765
13766
13767
13768
13769
13770
13771
13772
13773
13774
13775
13776
13777
13778
13779
13780
13781
13782
13783
13784
13785
13786
13787
13788
13789
13790
13791
13792
13793
13794
13795
13796
13797
13798
13799
13800
13801
13802
13803
13804
13805
13806
13807
13808
13809
13810
13811
13812
13813
13814
13815
13816
13817
13818
13819
13820
13821
13822
13823
13824
13825
13826
13827
13828
13829
13830
13831
13832
13833
13834
13835
13836
13837
13838
13839
13840
13841
13842
13843
13844
13845
13846
13847
13848
13849
13850
13851
13852
13853
13854
13855
13856
13857
13858
13859
13860
13861
13862
13863
13864
13865
13866
13867
13868
13869
13870
13871
13872
13873
13874
13875
13876
13877
13878
13879
13880
13881
13882
13883
13884
13885
13886
13887
13888
13889
13890
13891
13892
13893
13894
13895
13896
13897
13898
13899
13900
13901
13902
13903
13904
13905
13906
13907
13908
13909
13910
13911
13912
13913
13914
13915
13916
13917
13918
13919
13920
13921
13922
13923
13924
13925
13926
13927
13928
13929
13930
13931
13932
13933
13934
13935
13936
13937
13938
13939
13940
13941
13942
13943
13944
13945
13946
13947
13948
13949
13950
13951
13952
13953
13954
13955
13956
13957
13958
13959
13960
13961
13962
13963
13964
13965
13966
13967
13968
13969
13970
13971
13972
13973
13974
13975
13976
13977
13978
13979
13980
13981
13982
13983
13984
13985
13986
13987
13988
13989
13990
13991
13992
13993
13994
13995
13996
13997
13998
13999
14000
14001
14002
14003
14004
14005
14006
14007
14008
14009
14010
14011
14012
14013
14014
14015
14016
14017
14018
14019
14020
14021
14022
14023
14024
14025
14026
14027
14028
14029
14030
14031
14032
14033
14034
14035
14036
14037
14038
14039
14040
14041
14042
14043
14044
14045
14046
14047
14048
14049
14050
14051
14052
14053
14054
14055
14056
14057
14058
14059
14060
14061
14062
14063
14064
14065
14066
14067
14068
14069
14070
14071
14072
14073
14074
14075
14076
14077
14078
14079
14080
14081
14082
14083
14084
14085
14086
14087
14088
14089
14090
14091
14092
14093
14094
14095
14096
14097
14098
14099
14100
14101
14102
14103
14104
14105
14106
14107
14108
14109
14110
14111
14112
14113
14114
14115
14116
14117
14118
14119
14120
14121
14122
14123
14124
14125
14126
14127
14128
14129
14130
14131
14132
14133
14134
14135
14136
14137
14138
14139
14140
14141
14142
14143
14144
14145
14146
14147
14148
14149
14150
14151
14152
14153
14154
14155
14156
14157
14158
14159
14160
14161
14162
14163
14164
14165
14166
14167
14168
14169
14170
14171
14172
14173
14174
14175
14176
14177
14178
14179
14180
14181
14182
14183
14184
14185
14186
14187
14188
14189
14190
14191
14192
14193
14194
14195
14196
14197
14198
14199
14200
14201
14202
14203
14204
14205
14206
14207
14208
14209
14210
14211
14212
14213
14214
14215
14216
14217
14218
14219
14220
14221
14222
14223
14224
14225
14226
14227
14228
14229
14230
14231
14232
14233
14234
14235
14236
14237
14238
14239
14240
14241
14242
14243
14244
14245
14246
14247
14248
14249
14250
14251
14252
14253
14254
14255
14256
14257
14258
14259
14260
14261
14262
14263
14264
14265
14266
14267
14268
14269
14270
14271
14272
14273
14274
14275
14276
14277
14278
14279
14280
14281
14282
14283
14284
14285
14286
14287
14288
14289
14290
14291
14292
14293
14294
14295
14296
14297
14298
14299
14300
14301
14302
14303
14304
14305
14306
14307
14308
14309
14310
14311
14312
14313
14314
14315
14316
14317
14318
14319
14320
14321
14322
14323
14324
14325
14326
14327
14328
14329
14330
14331
14332
14333
14334
14335
14336
14337
14338
14339
14340
14341
14342
14343
14344
14345
14346
14347
14348
14349
14350
14351
14352
14353
14354
14355
14356
14357
14358
14359
14360
14361
14362
14363
14364
14365
14366
14367
14368
14369
14370
14371
14372
14373
14374
14375
14376
14377
14378
14379
14380
14381
14382
14383
14384
14385
14386
14387
14388
14389
14390
14391
14392
14393
14394
14395
14396
14397
14398
14399
14400
14401
14402
14403
14404
14405
14406
14407
14408
14409
14410
14411
14412
14413
14414
14415
14416
14417
14418
14419
14420
14421
14422
14423
14424
14425
14426
14427
14428
14429
14430
14431
14432
14433
14434
14435
14436
14437
14438
14439
14440
14441
14442
14443
14444
14445
14446
14447
14448
14449
14450
14451
14452
14453
14454
14455
14456
14457
14458
14459
14460
14461
14462
14463
14464
14465
14466
14467
14468
14469
14470
14471
14472
14473
14474
14475
14476
14477
14478
14479
14480
14481
14482
14483
14484
14485
14486
14487
14488
14489
14490
14491
14492
14493
14494
14495
14496
14497
14498
14499
14500
14501
14502
14503
14504
14505
14506
14507
14508
14509
14510
14511
14512
14513
14514
14515
14516
14517
14518
14519
14520
14521
14522
14523
14524
14525
14526
14527
14528
14529
14530
14531
14532
14533
14534
14535
14536
14537
14538
14539
14540
14541
14542
14543
14544
14545
14546
14547
14548
14549
14550
14551
14552
14553
14554
14555
14556
14557
14558
14559
14560
14561
14562
14563
14564
14565
14566
14567
14568
14569
14570
14571
14572
14573
14574
14575
14576
14577
14578
14579
14580
14581
14582
14583
14584
14585
14586
14587
14588
14589
14590
14591
14592
14593
14594
14595
14596
14597
14598
14599
14600
14601
14602
14603
14604
14605
14606
14607
14608
14609
14610
14611
14612
14613
14614
14615
14616
14617
14618
14619
14620
14621
14622
14623
14624
14625
14626
14627
14628
14629
14630
14631
14632
14633
14634
14635
14636
14637
14638
14639
14640
14641
14642
14643
14644
14645
14646
14647
14648
14649
14650
14651
14652
14653
14654
14655
14656
14657
14658
14659
14660
14661
14662
14663
14664
14665
14666
14667
14668
14669
14670
14671
14672
14673
14674
14675
14676
14677
14678
14679
14680
14681
14682
14683
14684
14685
14686
14687
14688
14689
14690
14691
14692
14693
14694
14695
14696
14697
14698
14699
14700
14701
14702
14703
14704
14705
14706
14707
14708
14709
14710
14711
14712
14713
14714
14715
14716
14717
14718
14719
14720
14721
14722
14723
14724
14725
14726
14727
14728
14729
14730
14731
14732
14733
14734
14735
14736
14737
14738
14739
14740
14741
14742
14743
14744
14745
14746
14747
14748
14749
14750
14751
14752
14753
14754
14755
14756
14757
14758
14759
14760
14761
14762
14763
14764
14765
14766
14767
14768
14769
14770
14771
14772
14773
14774
14775
14776
14777
14778
14779
14780
14781
14782
14783
14784
14785
14786
14787
14788
14789
14790
14791
14792
14793
14794
14795
14796
14797
14798
14799
14800
14801
14802
14803
14804
14805
14806
14807
14808
14809
14810
14811
14812
14813
14814
14815
14816
14817
14818
14819
14820
14821
14822
14823
14824
14825
14826
14827
14828
14829
14830
14831
14832
14833
14834
14835
14836
14837
14838
14839
14840
14841
14842
14843
14844
14845
14846
14847
14848
14849
14850
14851
14852
14853
14854
14855
14856
14857
14858
14859
14860
14861
14862
14863
14864
14865
14866
14867
14868
14869
14870
14871
14872
14873
14874
14875
14876
14877
14878
14879
14880
14881
14882
14883
14884
14885
14886
14887
14888
14889
14890
14891
14892
14893
14894
14895
14896
14897
14898
14899
14900
14901
14902
14903
14904
14905
14906
14907
14908
14909
14910
14911
14912
14913
14914
14915
14916
14917
14918
14919
14920
14921
14922
14923
14924
14925
14926
14927
14928
14929
14930
14931
14932
14933
14934
14935
14936
14937
14938
14939
14940
14941
14942
14943
14944
14945
14946
14947
14948
14949
14950
14951
14952
14953
14954
14955
14956
14957
14958
14959
14960
14961
14962
14963
14964
14965
14966
14967
14968
14969
14970
14971
14972
14973
14974
14975
14976
14977
14978
14979
14980
14981
14982
14983
14984
14985
14986
14987
14988
14989
14990
14991
14992
14993
14994
14995
14996
14997
14998
14999
15000
15001
15002
15003
15004
15005
15006
15007
15008
15009
15010
15011
15012
15013
15014
15015
15016
15017
15018
15019
15020
15021
15022
15023
15024
15025
15026
15027
15028
15029
15030
15031
15032
15033
15034
15035
15036
15037
15038
15039
15040
15041
15042
15043
15044
15045
15046
15047
15048
15049
15050
15051
15052
15053
15054
15055
15056
15057
15058
15059
15060
15061
15062
15063
15064
15065
15066
15067
15068
15069
15070
15071
15072
15073
15074
15075
15076
15077
15078
15079
15080
15081
15082
15083
15084
15085
15086
15087
15088
15089
15090
15091
15092
15093
15094
15095
15096
15097
15098
15099
15100
15101
15102
15103
15104
15105
15106
15107
15108
15109
15110
15111
15112
15113
15114
15115
15116
15117
15118
15119
15120
15121
15122
15123
15124
15125
15126
15127
15128
15129
15130
15131
15132
15133
15134
15135
15136
15137
15138
15139
15140
15141
15142
15143
15144
15145
15146
15147
15148
15149
15150
15151
15152
15153
15154
15155
15156
15157
15158
15159
15160
15161
15162
15163
15164
15165
15166
15167
15168
15169
15170
15171
15172
15173
15174
15175
15176
15177
15178
15179
15180
15181
15182
15183
15184
15185
15186
15187
15188
15189
15190
15191
15192
15193
15194
15195
15196
15197
15198
15199
15200
15201
15202
15203
15204
15205
15206
15207
15208
15209
15210
15211
15212
15213
15214
15215
15216
15217
15218
15219
15220
15221
15222
15223
15224
15225
15226
15227
15228
15229
15230
15231
15232
15233
15234
15235
15236
15237
15238
15239
15240
15241
15242
15243
15244
15245
15246
15247
15248
15249
15250
15251
15252
15253
15254
15255
15256
15257
15258
15259
15260
15261
15262
15263
15264
15265
15266
15267
15268
15269
15270
15271
15272
15273
15274
15275
15276
15277
15278
15279
15280
15281
15282
15283
15284
15285
15286
15287
15288
15289
15290
15291
15292
15293
15294
15295
15296
15297
15298
15299
15300
15301
15302
15303
15304
15305
15306
15307
15308
15309
15310
15311
15312
15313
15314
15315
15316
15317
15318
15319
15320
15321
15322
15323
15324
15325
15326
15327
15328
15329
15330
15331
15332
15333
15334
15335
15336
15337
15338
15339
15340
15341
15342
15343
15344
15345
15346
15347
15348
15349
15350
15351
15352
15353
15354
15355
15356
15357
15358
15359
15360
15361
15362
15363
15364
15365
15366
15367
15368
15369
15370
15371
15372
15373
15374
15375
15376
15377
15378
15379
15380
15381
15382
15383
15384
15385
15386
15387
15388
15389
15390
15391
15392
15393
15394
15395
15396
15397
15398
15399
15400
15401
15402
15403
15404
15405
15406
15407
15408
15409
15410
15411
15412
15413
15414
15415
15416
15417
15418
15419
15420
15421
15422
15423
15424
15425
15426
15427
15428
15429
15430
15431
15432
15433
15434
15435
15436
15437
15438
15439
15440
15441
15442
15443
15444
15445
15446
15447
15448
15449
15450
15451
15452
15453
15454
15455
15456
15457
15458
15459
15460
15461
15462
15463
15464
15465
15466
15467
15468
15469
15470
15471
15472
15473
15474
15475
15476
15477
15478
15479
15480
15481
15482
15483
15484
15485
15486
15487
15488
15489
15490
15491
15492
15493
15494
15495
15496
15497
15498
15499
15500
15501
15502
15503
15504
15505
15506
15507
15508
15509
15510
15511
15512
15513
15514
15515
15516
15517
15518
15519
15520
15521
15522
15523
15524
15525
15526
15527
15528
15529
15530
15531
15532
15533
15534
15535
15536
15537
15538
15539
15540
15541
15542
15543
15544
15545
15546
15547
15548
15549
15550
15551
15552
15553
15554
15555
15556
15557
15558
15559
15560
15561
15562
15563
15564
15565
15566
15567
15568
15569
15570
15571
15572
15573
15574
15575
15576
15577
15578
15579
15580
15581
15582
15583
15584
15585
15586
15587
15588
15589
15590
15591
15592
15593
15594
15595
15596
15597
15598
15599
15600
15601
15602
15603
15604
15605
15606
15607
15608
15609
15610
15611
15612
15613
15614
15615
15616
15617
15618
15619
15620
15621
15622
15623
15624
15625
15626
15627
15628
15629
15630
15631
15632
15633
15634
15635
15636
15637
15638
15639
15640
15641
15642
15643
15644
15645
15646
15647
15648
15649
15650
15651
15652
15653
15654
15655
15656
15657
15658
15659
15660
15661
15662
15663
15664
15665
15666
15667
15668
15669
15670
15671
15672
15673
15674
15675
15676
15677
15678
15679
15680
15681
15682
15683
15684
15685
15686
15687
15688
15689
15690
15691
15692
15693
15694
15695
15696
15697
15698
15699
15700
15701
15702
15703
15704
15705
15706
15707
15708
15709
15710
15711
15712
15713
15714
15715
15716
15717
15718
15719
15720
15721
15722
15723
15724
15725
15726
15727
15728
15729
15730
15731
15732
15733
15734
15735
15736
15737
15738
15739
15740
15741
15742
15743
15744
15745
15746
15747
15748
15749
15750
15751
15752
15753
15754
15755
15756
15757
15758
15759
15760
15761
15762
15763
15764
15765
15766
15767
15768
15769
15770
15771
15772
15773
15774
15775
15776
15777
15778
15779
15780
15781
15782
15783
15784
15785
15786
15787
15788
15789
15790
15791
15792
15793
15794
15795
15796
15797
15798
15799
15800
15801
15802
15803
15804
15805
15806
15807
15808
15809
15810
15811
15812
15813
15814
15815
15816
15817
15818
15819
15820
15821
15822
15823
15824
15825
15826
15827
15828
15829
15830
15831
15832
15833
15834
15835
15836
15837
15838
15839
15840
15841
15842
15843
15844
15845
15846
15847
15848
15849
15850
15851
15852
15853
15854
15855
15856
15857
15858
15859
15860
15861
15862
15863
15864
15865
15866
15867
15868
15869
15870
15871
15872
15873
15874
15875
15876
15877
15878
15879
15880
15881
15882
15883
15884
15885
15886
15887
15888
15889
15890
15891
15892
15893
15894
15895
15896
15897
15898
15899
15900
15901
15902
15903
15904
15905
15906
15907
15908
15909
15910
15911
15912
15913
15914
15915
15916
15917
15918
15919
15920
15921
15922
15923
15924
15925
15926
15927
15928
15929
15930
15931
15932
15933
15934
15935
15936
15937
15938
15939
15940
15941
15942
15943
15944
15945
15946
15947
15948
15949
15950
15951
15952
15953
15954
15955
15956
15957
15958
15959
15960
15961
15962
15963
15964
15965
15966
15967
15968
15969
15970
15971
15972
15973
15974
15975
15976
15977
15978
15979
15980
15981
15982
15983
15984
15985
15986
15987
15988
15989
15990
15991
15992
15993
15994
15995
15996
15997
15998
15999
16000
16001
16002
16003
16004
16005
16006
16007
16008
16009
16010
16011
16012
16013
16014
16015
16016
16017
16018
16019
16020
16021
16022
16023
16024
16025
16026
16027
16028
16029
16030
16031
16032
16033
16034
16035
16036
16037
16038
16039
16040
16041
16042
16043
16044
16045
16046
16047
16048
16049
16050
16051
16052
16053
16054
16055
16056
16057
16058
16059
16060
16061
16062
16063
16064
16065
16066
16067
16068
16069
16070
16071
16072
16073
16074
16075
16076
16077
16078
16079
16080
16081
16082
16083
16084
16085
16086
16087
16088
16089
16090
16091
16092
16093
16094
16095
16096
16097
16098
16099
16100
16101
16102
16103
16104
16105
16106
16107
16108
16109
16110
16111
16112
16113
16114
16115
16116
16117
16118
16119
16120
16121
16122
16123
16124
16125
16126
16127
16128
16129
16130
16131
16132
16133
16134
16135
16136
16137
16138
16139
16140
16141
16142
16143
16144
16145
16146
16147
16148
16149
16150
16151
16152
16153
16154
16155
16156
16157
16158
16159
16160
16161
16162
16163
16164
16165
16166
16167
16168
16169
16170
16171
16172
16173
16174
16175
16176
16177
16178
16179
16180
16181
16182
16183
16184
16185
16186
16187
16188
16189
16190
16191
16192
16193
16194
16195
16196
16197
16198
16199
16200
16201
16202
16203
16204
16205
16206
16207
16208
16209
16210
16211
16212
16213
16214
16215
16216
16217
16218
16219
16220
16221
16222
16223
16224
16225
16226
16227
16228
16229
16230
16231
16232
16233
16234
16235
16236
16237
16238
16239
16240
16241
16242
16243
16244
16245
16246
16247
16248
16249
16250
16251
16252
16253
16254
16255
16256
16257
16258
16259
16260
16261
16262
16263
16264
16265
16266
16267
16268
16269
16270
16271
16272
16273
16274
16275
16276
16277
16278
16279
16280
16281
16282
16283
16284
16285
16286
16287
16288
16289
16290
16291
16292
16293
16294
16295
16296
16297
16298
16299
16300
16301
16302
16303
16304
16305
16306
16307
16308
16309
16310
16311
16312
16313
16314
16315
16316
16317
16318
16319
16320
16321
16322
16323
16324
16325
16326
16327
16328
16329
16330
16331
16332
16333
16334
16335
16336
16337
16338
16339
16340
16341
16342
16343
16344
16345
16346
16347
16348
16349
16350
16351
16352
16353
16354
16355
16356
16357
16358
16359
16360
16361
16362
16363
16364
16365
16366
16367
16368
16369
16370
16371
16372
16373
16374
16375
16376
16377
16378
16379
16380
16381
16382
16383
16384
16385
16386
16387
16388
16389
16390
16391
16392
16393
16394
16395
16396
16397
16398
16399
16400
16401
16402
16403
16404
16405
16406
16407
16408
16409
16410
16411
16412
16413
16414
16415
16416
16417
16418
16419
16420
16421
16422
16423
16424
16425
16426
16427
16428
16429
16430
16431
16432
16433
16434
16435
16436
16437
16438
16439
16440
16441
16442
16443
16444
16445
16446
16447
16448
16449
16450
16451
16452
16453
16454
16455
16456
16457
16458
16459
16460
16461
16462
16463
16464
16465
16466
16467
16468
16469
16470
16471
16472
16473
16474
16475
16476
16477
16478
16479
16480
16481
16482
16483
16484
16485
16486
16487
16488
16489
16490
16491
16492
16493
16494
16495
16496
16497
16498
16499
16500
16501
16502
16503
16504
16505
16506
16507
16508
16509
16510
16511
16512
16513
16514
16515
16516
16517
16518
16519
16520
16521
16522
16523
16524
16525
16526
16527
16528
16529
16530
16531
16532
16533
16534
16535
16536
16537
16538
16539
16540
16541
16542
16543
16544
16545
16546
16547
16548
16549
16550
16551
16552
16553
16554
16555
16556
16557
16558
16559
16560
16561
16562
16563
16564
16565
16566
16567
16568
16569
16570
16571
16572
16573
16574
16575
16576
16577
16578
16579
16580
16581
16582
16583
16584
16585
16586
16587
16588
16589
16590
16591
16592
16593
16594
16595
16596
16597
16598
16599
16600
16601
16602
16603
16604
16605
16606
16607
16608
16609
16610
16611
16612
16613
16614
16615
16616
16617
16618
16619
16620
16621
16622
16623
16624
16625
16626
16627
16628
16629
16630
16631
16632
16633
16634
16635
16636
16637
16638
16639
16640
16641
16642
16643
16644
16645
16646
16647
16648
16649
16650
16651
16652
16653
16654
16655
16656
16657
16658
16659
16660
16661
16662
16663
16664
16665
16666
16667
16668
16669
16670
16671
16672
16673
16674
16675
16676
16677
16678
16679
16680
16681
16682
16683
16684
16685
16686
16687
16688
16689
16690
16691
16692
16693
16694
16695
16696
16697
16698
16699
16700
16701
16702
16703
16704
16705
16706
16707
16708
16709
16710
16711
16712
16713
16714
16715
16716
16717
16718
16719
16720
16721
16722
16723
16724
16725
16726
16727
16728
16729
16730
16731
16732
16733
16734
16735
16736
16737
16738
16739
16740
16741
16742
16743
16744
16745
16746
16747
16748
16749
16750
16751
16752
16753
16754
16755
16756
16757
16758
16759
16760
16761
16762
16763
16764
16765
16766
16767
16768
16769
16770
16771
16772
16773
16774
16775
16776
16777
16778
16779
16780
16781
16782
16783
16784
16785
16786
16787
16788
16789
16790
16791
16792
16793
16794
16795
16796
16797
16798
16799
16800
16801
16802
16803
16804
16805
16806
16807
16808
16809
16810
16811
16812
16813
16814
16815
16816
16817
16818
16819
16820
16821
16822
16823
16824
16825
16826
16827
16828
16829
16830
16831
16832
16833
16834
16835
16836
16837
16838
16839
16840
16841
16842
16843
16844
16845
16846
16847
16848
16849
16850
16851
16852
16853
16854
16855
16856
16857
16858
16859
16860
16861
16862
16863
16864
16865
16866
16867
16868
16869
16870
16871
16872
16873
16874
16875
16876
16877
16878
16879
16880
16881
16882
16883
16884
16885
16886
16887
16888
16889
16890
16891
16892
16893
16894
16895
16896
16897
16898
16899
16900
16901
16902
16903
16904
16905
16906
16907
16908
16909
16910
16911
16912
16913
16914
16915
16916
16917
16918
16919
16920
16921
16922
16923
16924
16925
16926
16927
16928
16929
16930
16931
16932
16933
16934
16935
16936
16937
16938
16939
16940
16941
16942
16943
16944
16945
16946
16947
16948
16949
16950
16951
16952
16953
16954
16955
16956
16957
16958
16959
16960
16961
16962
16963
16964
16965
16966
16967
16968
16969
16970
16971
16972
16973
16974
16975
16976
16977
16978
16979
16980
16981
16982
16983
16984
16985
16986
16987
16988
16989
16990
16991
16992
16993
16994
16995
16996
16997
16998
16999
17000
17001
17002
17003
17004
17005
17006
17007
17008
17009
17010
17011
17012
17013
17014
17015
17016
17017
17018
17019
17020
17021
17022
17023
17024
17025
17026
17027
17028
17029
17030
17031
17032
17033
17034
17035
17036
17037
17038
17039
17040
17041
17042
17043
17044
17045
17046
17047
17048
17049
17050
17051
17052
17053
17054
17055
17056
17057
17058
17059
17060
17061
17062
17063
17064
17065
17066
17067
17068
17069
17070
17071
17072
17073
17074
17075
17076
17077
17078
17079
17080
17081
17082
17083
17084
17085
17086
17087
17088
17089
17090
17091
17092
17093
17094
17095
17096
17097
17098
17099
17100
17101
17102
17103
17104
17105
17106
17107
17108
17109
17110
17111
17112
17113
17114
17115
17116
17117
17118
17119
17120
17121
17122
17123
17124
17125
17126
17127
17128
17129
17130
17131
17132
17133
17134
17135
17136
17137
17138
17139
17140
17141
17142
17143
17144
17145
17146
17147
17148
17149
17150
17151
17152
17153
17154
17155
17156
17157
17158
17159
17160
17161
17162
17163
17164
17165
17166
17167
17168
17169
17170
17171
17172
17173
17174
17175
17176
17177
17178
17179
17180
17181
17182
17183
17184
17185
17186
17187
17188
17189
17190
17191
17192
17193
17194
17195
17196
17197
17198
17199
17200
17201
17202
17203
17204
17205
17206
17207
17208
17209
17210
17211
17212
17213
17214
17215
17216
17217
17218
17219
17220
17221
17222
17223
17224
17225
17226
17227
17228
17229
17230
17231
17232
17233
17234
17235
17236
17237
17238
17239
17240
17241
17242
17243
17244
17245
17246
17247
17248
17249
17250
17251
17252
17253
17254
17255
17256
17257
17258
17259
17260
17261
17262
17263
17264
17265
17266
17267
17268
17269
17270
17271
17272
17273
17274
17275
17276
17277
17278
17279
17280
17281
17282
17283
17284
17285
17286
17287
17288
17289
17290
17291
17292
17293
17294
17295
17296
17297
17298
17299
17300
17301
17302
17303
17304
17305
17306
17307
17308
17309
17310
17311
17312
17313
17314
17315
17316
17317
17318
17319
17320
17321
17322
17323
17324
17325
17326
17327
17328
17329
17330
17331
17332
17333
17334
17335
17336
17337
17338
17339
17340
17341
17342
17343
17344
17345
17346
17347
17348
17349
17350
17351
17352
17353
17354
17355
17356
17357
17358
17359
17360
17361
17362
17363
17364
17365
17366
17367
17368
17369
17370
17371
17372
17373
17374
17375
17376
17377
17378
17379
17380
17381
17382
17383
17384
17385
17386
17387
17388
17389
17390
17391
17392
17393
17394
17395
17396
17397
17398
17399
17400
17401
17402
17403
17404
17405
17406
17407
17408
17409
17410
17411
17412
17413
17414
17415
17416
17417
17418
17419
17420
17421
17422
17423
17424
17425
17426
17427
17428
17429
17430
17431
17432
17433
17434
17435
17436
17437
17438
17439
17440
17441
17442
17443
17444
17445
17446
17447
17448
17449
17450
17451
17452
17453
17454
17455
17456
17457
17458
17459
17460
17461
17462
17463
17464
17465
17466
17467
17468
17469
17470
17471
17472
17473
17474
17475
17476
17477
17478
17479
17480
17481
17482
17483
17484
17485
17486
17487
17488
17489
17490
17491
17492
17493
17494
17495
17496
17497
17498
17499
17500
17501
17502
17503
17504
17505
17506
17507
17508
17509
17510
17511
17512
17513
17514
17515
17516
17517
17518
17519
17520
17521
17522
17523
17524
17525
17526
17527
17528
17529
17530
17531
17532
17533
17534
17535
17536
17537
17538
17539
17540
17541
17542
17543
17544
17545
17546
17547
17548
17549
17550
17551
17552
17553
17554
17555
17556
17557
17558
17559
17560
17561
17562
17563
17564
17565
17566
17567
17568
17569
17570
17571
17572
17573
17574
17575
17576
17577
17578
17579
17580
17581
17582
17583
17584
17585
17586
17587
17588
17589
17590
17591
17592
17593
17594
17595
17596
17597
17598
17599
17600
17601
17602
17603
17604
17605
17606
17607
17608
17609
17610
17611
17612
17613
17614
17615
17616
17617
17618
17619
17620
17621
17622
17623
17624
17625
17626
17627
17628
17629
17630
17631
17632
17633
17634
17635
17636
17637
17638
17639
17640
17641
17642
17643
17644
17645
17646
17647
17648
17649
17650
17651
17652
17653
17654
17655
17656
17657
17658
17659
17660
17661
17662
17663
17664
17665
17666
17667
17668
17669
17670
17671
17672
17673
17674
17675
17676
17677
17678
17679
17680
17681
17682
17683
17684
17685
17686
17687
17688
17689
17690
17691
17692
17693
17694
17695
17696
17697
17698
17699
17700
17701
17702
17703
17704
17705
17706
17707
17708
17709
17710
17711
17712
17713
17714
17715
17716
17717
17718
17719
17720
17721
17722
17723
17724
17725
17726
17727
17728
17729
17730
17731
17732
17733
17734
17735
17736
17737
17738
17739
17740
17741
17742
17743
17744
17745
17746
17747
17748
17749
17750
17751
17752
17753
17754
17755
17756
17757
17758
17759
17760
17761
17762
17763
17764
17765
17766
17767
17768
17769
17770
17771
17772
17773
17774
17775
17776
17777
17778
17779
17780
17781
17782
17783
17784
17785
17786
17787
17788
17789
17790
17791
17792
17793
17794
17795
17796
17797
17798
17799
17800
17801
17802
17803
17804
17805
17806
17807
17808
17809
17810
17811
17812
17813
17814
17815
17816
17817
17818
17819
17820
17821
17822
17823
17824
17825
17826
17827
17828
17829
17830
17831
17832
17833
17834
17835
17836
17837
17838
17839
17840
17841
17842
17843
17844
17845
17846
17847
17848
17849
17850
17851
17852
17853
17854
17855
17856
17857
17858
17859
17860
17861
17862
17863
17864
17865
17866
17867
17868
17869
17870
17871
17872
17873
17874
17875
17876
17877
17878
17879
17880
17881
17882
17883
17884
17885
17886
17887
17888
17889
17890
17891
17892
17893
17894
17895
17896
17897
17898
17899
17900
17901
17902
17903
17904
17905
17906
17907
17908
17909
17910
17911
17912
17913
17914
17915
17916
17917
17918
17919
17920
17921
17922
17923
17924
17925
17926
17927
17928
17929
17930
17931
17932
17933
17934
17935
17936
17937
17938
17939
17940
17941
17942
17943
17944
17945
17946
17947
17948
17949
17950
17951
17952
17953
17954
17955
17956
17957
17958
17959
17960
17961
17962
17963
17964
17965
17966
17967
17968
17969
17970
17971
17972
17973
17974
17975
17976
17977
17978
17979
17980
17981
17982
17983
17984
17985
17986
17987
17988
17989
17990
17991
17992
17993
17994
17995
17996
17997
17998
17999
18000
18001
18002
18003
18004
18005
18006
18007
18008
18009
18010
18011
18012
18013
18014
18015
18016
18017
18018
18019
18020
18021
18022
18023
18024
18025
18026
18027
18028
18029
18030
18031
18032
18033
18034
18035
18036
18037
18038
18039
18040
18041
18042
18043
18044
18045
18046
18047
18048
18049
18050
18051
18052
18053
18054
18055
18056
18057
18058
18059
18060
18061
18062
18063
18064
18065
18066
18067
18068
18069
18070
18071
18072
18073
18074
18075
18076
18077
18078
18079
18080
18081
18082
18083
18084
18085
18086
18087
18088
18089
18090
18091
18092
18093
18094
18095
18096
18097
18098
18099
18100
18101
18102
18103
18104
18105
18106
18107
18108
18109
18110
18111
18112
18113
18114
18115
18116
18117
18118
18119
18120
18121
18122
18123
18124
18125
18126
18127
18128
18129
18130
18131
18132
18133
18134
18135
18136
18137
18138
18139
18140
18141
18142
18143
18144
18145
18146
18147
18148
18149
18150
18151
18152
18153
18154
18155
18156
18157
18158
18159
18160
18161
18162
18163
18164
18165
18166
18167
18168
18169
18170
18171
18172
18173
18174
18175
18176
18177
18178
18179
18180
18181
18182
18183
18184
18185
18186
18187
18188
18189
18190
18191
18192
18193
18194
18195
18196
18197
18198
18199
18200
18201
18202
18203
18204
18205
18206
18207
18208
18209
18210
18211
18212
18213
18214
18215
18216
18217
18218
18219
18220
18221
18222
18223
18224
18225
18226
18227
18228
18229
18230
18231
18232
18233
18234
18235
18236
18237
18238
18239
18240
18241
18242
18243
18244
18245
18246
18247
18248
18249
18250
18251
18252
18253
18254
18255
18256
18257
18258
18259
18260
18261
18262
18263
18264
18265
18266
18267
18268
18269
18270
18271
18272
18273
18274
18275
18276
18277
18278
18279
18280
18281
18282
18283
18284
18285
18286
18287
18288
18289
18290
18291
18292
18293
18294
18295
18296
18297
18298
18299
18300
18301
18302
18303
18304
18305
18306
18307
18308
18309
18310
18311
18312
18313
18314
18315
18316
18317
18318
18319
18320
18321
18322
18323
18324
18325
18326
18327
18328
18329
18330
18331
18332
18333
18334
18335
18336
18337
18338
18339
18340
18341
18342
18343
18344
18345
18346
18347
18348
18349
18350
18351
18352
18353
18354
18355
18356
18357
18358
18359
18360
18361
18362
18363
18364
18365
18366
18367
18368
18369
18370
18371
18372
18373
18374
18375
18376
18377
18378
18379
18380
18381
18382
18383
18384
18385
18386
18387
18388
18389
18390
18391
18392
18393
18394
18395
18396
18397
18398
18399
18400
18401
18402
18403
18404
18405
18406
18407
18408
18409
18410
18411
18412
18413
18414
18415
18416
18417
18418
18419
18420
18421
18422
18423
18424
18425
18426
18427
18428
18429
18430
18431
18432
18433
18434
18435
18436
18437
18438
18439
18440
18441
18442
18443
18444
18445
18446
18447
18448
18449
18450
18451
18452
18453
18454
18455
18456
18457
18458
18459
18460
18461
18462
18463
18464
18465
18466
18467
18468
18469
18470
18471
18472
18473
18474
18475
18476
18477
18478
18479
18480
18481
18482
18483
18484
18485
18486
18487
18488
18489
18490
18491
18492
18493
18494
18495
18496
18497
18498
18499
18500
18501
18502
18503
18504
18505
18506
18507
18508
18509
18510
18511
18512
18513
18514
18515
18516
18517
18518
18519
18520
18521
18522
18523
18524
18525
18526
18527
18528
18529
18530
18531
18532
18533
18534
18535
18536
18537
18538
18539
18540
18541
18542
18543
18544
18545
18546
18547
18548
18549
18550
18551
18552
18553
18554
18555
18556
18557
18558
18559
18560
18561
18562
18563
18564
18565
18566
18567
18568
18569
18570
18571
18572
18573
18574
18575
18576
18577
18578
18579
18580
18581
18582
18583
18584
18585
18586
18587
18588
18589
18590
18591
18592
18593
18594
18595
18596
18597
18598
18599
18600
18601
18602
18603
18604
18605
18606
18607
18608
18609
18610
18611
18612
18613
18614
18615
18616
18617
18618
18619
18620
18621
18622
18623
18624
18625
18626
18627
18628
18629
18630
18631
18632
18633
18634
18635
18636
18637
18638
18639
18640
18641
18642
18643
18644
18645
18646
18647
18648
18649
18650
18651
18652
18653
18654
18655
18656
18657
18658
18659
18660
18661
18662
18663
18664
18665
18666
18667
18668
18669
18670
18671
18672
18673
18674
18675
18676
18677
18678
18679
18680
18681
18682
18683
18684
18685
18686
18687
18688
18689
18690
18691
18692
18693
18694
18695
18696
18697
18698
18699
18700
18701
18702
18703
18704
18705
18706
18707
18708
18709
18710
18711
18712
18713
18714
18715
18716
18717
18718
18719
18720
18721
18722
18723
18724
18725
18726
18727
18728
18729
18730
18731
18732
18733
18734
18735
18736
18737
18738
18739
18740
18741
18742
18743
18744
18745
18746
18747
18748
18749
18750
18751
18752
18753
18754
18755
18756
18757
18758
18759
18760
18761
18762
18763
18764
18765
18766
18767
18768
18769
18770
18771
18772
18773
18774
18775
18776
18777
18778
18779
18780
18781
18782
18783
18784
18785
18786
18787
18788
18789
18790
18791
18792
18793
18794
18795
18796
18797
18798
18799
18800
18801
18802
18803
18804
18805
18806
18807
18808
18809
18810
18811
18812
18813
18814
18815
18816
18817
18818
18819
18820
18821
18822
18823
18824
18825
18826
18827
18828
18829
18830
18831
18832
18833
18834
18835
18836
18837
18838
18839
18840
18841
18842
18843
18844
18845
18846
18847
18848
18849
18850
18851
18852
18853
18854
18855
18856
18857
18858
18859
18860
18861
18862
18863
18864
18865
18866
18867
18868
18869
18870
18871
18872
18873
18874
18875
18876
18877
18878
18879
18880
18881
18882
18883
18884
18885
18886
18887
18888
18889
18890
18891
18892
18893
18894
18895
18896
18897
18898
18899
18900
18901
18902
18903
18904
18905
18906
18907
18908
18909
18910
18911
18912
18913
18914
18915
18916
18917
18918
18919
18920
18921
18922
18923
18924
18925
18926
18927
18928
18929
18930
18931
18932
18933
18934
18935
18936
18937
18938
18939
18940
18941
18942
18943
18944
18945
18946
18947
18948
18949
18950
18951
18952
18953
18954
18955
18956
18957
18958
18959
18960
18961
18962
18963
18964
18965
18966
18967
18968
18969
18970
18971
18972
18973
18974
18975
18976
18977
18978
18979
18980
18981
18982
18983
18984
18985
18986
18987
18988
18989
18990
18991
18992
18993
18994
18995
18996
18997
18998
18999
19000
19001
19002
19003
19004
19005
19006
19007
19008
19009
19010
19011
19012
19013
19014
19015
19016
19017
19018
19019
19020
19021
19022
19023
19024
19025
19026
19027
19028
19029
19030
19031
19032
19033
19034
19035
19036
19037
19038
19039
19040
19041
19042
19043
19044
19045
19046
19047
19048
19049
19050
19051
19052
19053
19054
19055
19056
19057
19058
19059
19060
19061
19062
19063
19064
19065
19066
19067
19068
19069
19070
19071
19072
19073
19074
19075
19076
19077
19078
19079
19080
19081
19082
19083
19084
19085
19086
19087
19088
19089
19090
19091
19092
19093
19094
19095
19096
19097
19098
19099
19100
19101
19102
19103
19104
19105
19106
19107
19108
19109
19110
19111
19112
19113
19114
19115
19116
19117
19118
19119
19120
19121
19122
19123
19124
19125
19126
19127
19128
19129
19130
19131
19132
19133
19134
19135
19136
19137
19138
19139
19140
19141
19142
19143
19144
19145
19146
19147
19148
19149
19150
19151
19152
19153
19154
19155
19156
19157
19158
19159
19160
19161
19162
19163
19164
19165
19166
19167
19168
19169
19170
19171
19172
19173
19174
19175
19176
19177
19178
19179
19180
19181
19182
19183
19184
19185
19186
19187
19188
19189
19190
19191
19192
19193
19194
19195
19196
19197
19198
19199
19200
19201
19202
19203
19204
19205
19206
19207
19208
19209
19210
19211
19212
19213
19214
19215
19216
19217
19218
19219
19220
19221
19222
19223
19224
19225
19226
19227
19228
19229
19230
19231
19232
19233
19234
19235
19236
19237
19238
19239
19240
19241
19242
19243
19244
19245
19246
19247
19248
19249
19250
19251
19252
19253
19254
19255
19256
19257
19258
19259
19260
19261
19262
19263
19264
19265
19266
19267
19268
19269
19270
19271
19272
19273
19274
19275
19276
19277
19278
19279
19280
19281
19282
19283
19284
19285
19286
19287
19288
19289
19290
19291
19292
19293
19294
19295
19296
19297
19298
19299
19300
19301
19302
19303
19304
19305
19306
19307
19308
19309
19310
19311
19312
19313
19314
19315
19316
19317
19318
19319
19320
19321
19322
19323
19324
19325
19326
19327
19328
19329
19330
19331
19332
19333
19334
19335
19336
19337
19338
19339
19340
19341
19342
19343
19344
19345
19346
19347
19348
19349
19350
19351
19352
19353
19354
19355
19356
19357
19358
19359
19360
19361
19362
19363
19364
19365
19366
19367
19368
19369
19370
19371
19372
19373
19374
19375
19376
19377
19378
19379
19380
19381
19382
19383
19384
19385
19386
19387
19388
19389
19390
19391
19392
19393
19394
19395
19396
19397
19398
19399
19400
19401
19402
19403
19404
19405
19406
19407
19408
19409
19410
19411
19412
19413
19414
19415
19416
19417
19418
19419
19420
19421
19422
19423
19424
19425
19426
19427
19428
19429
19430
19431
19432
19433
19434
19435
19436
19437
19438
19439
19440
19441
19442
19443
19444
19445
19446
19447
19448
19449
19450
19451
19452
19453
19454
19455
19456
19457
19458
19459
19460
19461
19462
19463
19464
19465
19466
19467
19468
19469
19470
19471
19472
19473
19474
19475
19476
19477
19478
19479
19480
19481
19482
19483
19484
19485
19486
19487
19488
19489
19490
19491
19492
19493
19494
19495
19496
19497
19498
19499
19500
19501
19502
19503
19504
19505
19506
19507
19508
19509
19510
19511
19512
19513
19514
19515
19516
19517
19518
19519
19520
19521
19522
19523
19524
19525
19526
19527
19528
19529
19530
19531
19532
19533
19534
19535
19536
19537
19538
19539
19540
19541
19542
19543
19544
19545
19546
19547
19548
19549
19550
19551
19552
19553
19554
19555
19556
19557
19558
19559
19560
19561
19562
19563
19564
19565
19566
19567
19568
19569
19570
19571
19572
19573
19574
19575
19576
19577
19578
19579
19580
19581
19582
19583
19584
19585
19586
19587
19588
19589
19590
19591
19592
19593
19594
19595
19596
19597
19598
19599
19600
19601
19602
19603
19604
19605
19606
19607
19608
19609
19610
19611
19612
19613
19614
19615
19616
19617
19618
19619
19620
19621
19622
19623
19624
19625
19626
19627
19628
19629
19630
19631
19632
19633
19634
19635
19636
19637
19638
19639
19640
19641
19642
19643
19644
19645
19646
19647
19648
19649
19650
19651
19652
19653
19654
19655
19656
19657
19658
19659
19660
19661
19662
19663
19664
19665
19666
19667
19668
19669
19670
19671
19672
19673
19674
19675
19676
19677
19678
19679
19680
19681
19682
19683
19684
19685
19686
19687
19688
19689
19690
19691
19692
19693
19694
19695
19696
19697
19698
19699
19700
19701
19702
19703
19704
19705
19706
19707
19708
19709
19710
19711
19712
19713
19714
19715
19716
19717
19718
19719
19720
19721
19722
19723
19724
19725
19726
19727
19728
19729
19730
19731
19732
19733
19734
19735
19736
19737
19738
19739
19740
19741
19742
19743
19744
19745
19746
19747
19748
19749
19750
19751
19752
19753
19754
19755
19756
19757
19758
19759
19760
19761
19762
19763
19764
19765
19766
19767
19768
19769
19770
19771
19772
19773
19774
19775
19776
19777
19778
19779
19780
19781
19782
19783
19784
19785
19786
19787
19788
19789
19790
19791
19792
19793
19794
19795
19796
19797
19798
19799
19800
19801
19802
19803
19804
19805
19806
19807
19808
19809
19810
19811
19812
19813
19814
19815
19816
19817
19818
19819
19820
19821
19822
19823
19824
19825
19826
19827
19828
19829
19830
19831
19832
19833
19834
19835
19836
19837
19838
19839
19840
19841
19842
19843
19844
19845
19846
19847
19848
19849
19850
19851
19852
19853
19854
19855
19856
19857
19858
19859
19860
19861
19862
19863
19864
19865
19866
19867
19868
19869
19870
19871
19872
19873
19874
19875
19876
19877
19878
19879
19880
19881
19882
19883
19884
19885
19886
19887
19888
19889
19890
19891
19892
19893
19894
19895
19896
19897
19898
19899
19900
19901
19902
19903
19904
19905
19906
19907
19908
19909
19910
19911
19912
19913
19914
19915
19916
19917
19918
19919
19920
19921
19922
19923
19924
19925
19926
19927
19928
19929
19930
19931
19932
19933
19934
19935
19936
19937
19938
19939
19940
19941
19942
19943
19944
19945
19946
19947
19948
19949
19950
19951
19952
19953
19954
19955
19956
19957
19958
19959
19960
19961
19962
19963
19964
19965
19966
19967
19968
19969
19970
19971
19972
19973
19974
19975
19976
19977
19978
19979
19980
19981
19982
19983
19984
19985
19986
19987
19988
19989
19990
19991
19992
19993
19994
19995
19996
19997
19998
19999
20000
20001
20002
20003
20004
20005
20006
20007
20008
20009
20010
20011
20012
20013
20014
20015
20016
20017
20018
20019
20020
20021
20022
20023
20024
20025
20026
20027
20028
20029
20030
20031
20032
20033
20034
20035
20036
20037
20038
20039
20040
20041
20042
20043
20044
20045
20046
20047
20048
20049
20050
20051
20052
20053
20054
20055
20056
20057
20058
20059
20060
20061
20062
20063
20064
20065
20066
20067
20068
20069
20070
20071
20072
20073
20074
20075
20076
20077
20078
20079
20080
20081
20082
20083
20084
20085
20086
20087
20088
20089
20090
20091
20092
20093
20094
20095
20096
20097
20098
20099
20100
20101
20102
20103
20104
20105
20106
20107
20108
20109
20110
20111
20112
20113
20114
20115
20116
20117
20118
20119
20120
20121
20122
20123
20124
20125
20126
20127
20128
20129
20130
20131
20132
20133
20134
20135
20136
20137
20138
20139
20140
20141
20142
20143
20144
20145
20146
20147
20148
20149
20150
20151
20152
20153
20154
20155
20156
20157
20158
20159
20160
20161
20162
20163
20164
20165
20166
20167
20168
20169
20170
20171
20172
20173
20174
20175
20176
20177
20178
20179
20180
20181
20182
20183
20184
20185
20186
20187
20188
20189
20190
20191
20192
20193
20194
20195
20196
20197
20198
20199
20200
20201
20202
20203
20204
20205
20206
20207
20208
20209
20210
20211
20212
20213
20214
20215
20216
20217
20218
20219
20220
20221
20222
20223
20224
20225
20226
20227
20228
20229
20230
20231
20232
20233
20234
20235
20236
20237
20238
20239
20240
20241
20242
20243
20244
20245
20246
20247
20248
20249
20250
20251
20252
20253
20254
20255
20256
20257
20258
20259
20260
20261
20262
20263
20264
20265
20266
20267
20268
20269
20270
20271
20272
20273
20274
20275
20276
20277
20278
20279
20280
20281
20282
20283
20284
20285
20286
20287
20288
20289
20290
20291
20292
20293
20294
20295
20296
20297
20298
20299
20300
20301
20302
20303
20304
20305
20306
20307
20308
20309
20310
20311
20312
20313
20314
20315
20316
20317
20318
20319
20320
20321
20322
20323
20324
20325
20326
20327
20328
20329
20330
20331
20332
20333
20334
20335
20336
20337
20338
20339
20340
20341
20342
20343
20344
20345
20346
20347
20348
20349
20350
20351
20352
20353
20354
20355
20356
20357
20358
20359
20360
20361
20362
20363
20364
20365
20366
20367
20368
20369
20370
20371
20372
20373
20374
20375
20376
20377
20378
20379
20380
20381
20382
20383
20384
20385
20386
20387
20388
20389
20390
20391
20392
20393
20394
20395
20396
20397
20398
20399
20400
20401
20402
20403
20404
20405
20406
20407
20408
20409
20410
20411
20412
20413
20414
20415
20416
20417
20418
20419
20420
20421
20422
20423
20424
20425
20426
20427
20428
20429
20430
20431
20432
20433
20434
20435
20436
20437
20438
20439
20440
20441
20442
20443
20444
20445
20446
20447
20448
20449
20450
20451
20452
20453
20454
20455
20456
20457
20458
20459
20460
20461
20462
20463
20464
20465
20466
20467
20468
20469
20470
20471
20472
20473
20474
20475
20476
20477
20478
20479
20480
20481
20482
20483
20484
20485
20486
20487
20488
20489
20490
20491
20492
20493
20494
20495
20496
20497
20498
20499
20500
20501
20502
20503
20504
20505
20506
20507
20508
20509
20510
20511
20512
20513
20514
20515
20516
20517
20518
20519
20520
20521
20522
20523
20524
20525
20526
20527
20528
20529
20530
20531
20532
20533
20534
20535
20536
20537
20538
20539
20540
20541
20542
20543
20544
20545
20546
20547
20548
20549
20550
20551
20552
20553
20554
20555
20556
20557
20558
20559
20560
20561
20562
20563
20564
20565
20566
20567
20568
20569
20570
20571
20572
20573
20574
20575
20576
20577
20578
20579
20580
20581
20582
20583
20584
20585
20586
20587
20588
20589
20590
20591
20592
20593
20594
20595
20596
20597
20598
20599
20600
20601
20602
20603
20604
20605
20606
20607
20608
20609
20610
20611
20612
20613
20614
20615
20616
20617
20618
20619
20620
20621
20622
20623
20624
20625
20626
20627
20628
20629
20630
20631
20632
20633
20634
20635
20636
20637
20638
20639
20640
20641
20642
20643
20644
20645
20646
20647
20648
20649
20650
20651
20652
20653
20654
20655
20656
20657
20658
20659
20660
20661
20662
20663
20664
20665
20666
20667
20668
20669
20670
20671
20672
20673
20674
20675
20676
20677
20678
20679
20680
20681
20682
20683
20684
20685
20686
20687
20688
20689
20690
20691
20692
20693
20694
20695
20696
20697
20698
20699
20700
20701
20702
20703
20704
20705
20706
20707
20708
20709
20710
20711
20712
20713
20714
20715
20716
20717
20718
20719
20720
20721
20722
20723
20724
20725
20726
20727
20728
20729
20730
20731
20732
20733
20734
20735
20736
20737
20738
20739
20740
20741
20742
20743
20744
20745
20746
20747
20748
20749
20750
20751
20752
20753
20754
20755
20756
20757
20758
20759
20760
20761
20762
20763
20764
20765
20766
20767
20768
20769
20770
20771
20772
20773
20774
20775
20776
20777
20778
20779
20780
20781
20782
20783
20784
20785
20786
20787
20788
20789
20790
20791
20792
20793
20794
20795
20796
20797
20798
20799
20800
20801
20802
20803
20804
20805
20806
20807
20808
20809
20810
20811
20812
20813
20814
20815
20816
20817
20818
20819
20820
20821
20822
20823
20824
20825
20826
20827
20828
20829
20830
20831
20832
20833
20834
20835
20836
20837
20838
20839
20840
20841
20842
20843
20844
20845
20846
20847
20848
20849
20850
20851
20852
20853
20854
20855
20856
20857
20858
20859
20860
20861
20862
20863
20864
20865
20866
20867
20868
20869
20870
20871
20872
20873
20874
20875
20876
20877
20878
20879
20880
20881
20882
20883
20884
20885
20886
20887
20888
20889
20890
20891
20892
20893
20894
20895
20896
20897
20898
20899
20900
20901
20902
20903
20904
20905
20906
20907
20908
20909
20910
20911
20912
20913
20914
20915
20916
20917
20918
20919
20920
20921
20922
20923
20924
20925
20926
20927
20928
20929
20930
20931
20932
20933
20934
20935
20936
20937
20938
20939
20940
20941
20942
20943
20944
20945
20946
20947
20948
20949
20950
20951
20952
20953
20954
20955
20956
20957
20958
20959
20960
20961
20962
20963
20964
20965
20966
20967
20968
20969
20970
20971
20972
20973
20974
20975
20976
20977
20978
20979
20980
20981
20982
20983
20984
20985
20986
20987
20988
20989
20990
20991
20992
20993
20994
20995
20996
20997
20998
20999
21000
21001
21002
21003
21004
21005
21006
21007
21008
21009
21010
21011
21012
21013
21014
21015
21016
21017
21018
21019
21020
21021
21022
21023
21024
21025
21026
21027
21028
21029
21030
21031
21032
21033
21034
21035
21036
21037
21038
21039
21040
21041
21042
21043
21044
21045
21046
21047
21048
21049
21050
21051
21052
21053
21054
21055
21056
21057
21058
21059
21060
21061
21062
21063
21064
21065
21066
21067
21068
21069
21070
21071
21072
21073
21074
21075
21076
21077
21078
21079
21080
21081
21082
21083
21084
21085
21086
21087
21088
21089
21090
21091
21092
21093
21094
21095
21096
21097
21098
21099
21100
21101
21102
21103
21104
21105
21106
21107
21108
21109
21110
21111
21112
21113
21114
21115
21116
21117
21118
21119
21120
21121
21122
21123
21124
21125
21126
21127
21128
21129
21130
21131
21132
21133
21134
21135
21136
21137
21138
21139
21140
21141
21142
21143
21144
21145
21146
21147
21148
21149
21150
21151
21152
21153
21154
21155
21156
21157
21158
21159
21160
21161
21162
21163
21164
21165
21166
21167
21168
21169
21170
21171
21172
21173
21174
21175
21176
21177
21178
21179
21180
21181
21182
21183
21184
21185
21186
21187
21188
21189
21190
21191
21192
21193
21194
21195
21196
21197
21198
21199
21200
21201
21202
21203
21204
21205
21206
21207
21208
21209
21210
21211
21212
21213
21214
21215
21216
21217
21218
21219
21220
21221
21222
21223
21224
21225
21226
21227
21228
21229
21230
21231
21232
21233
21234
21235
21236
21237
21238
21239
21240
21241
21242
21243
21244
21245
21246
21247
21248
21249
21250
21251
21252
21253
21254
21255
21256
21257
21258
21259
21260
21261
21262
21263
21264
21265
21266
21267
21268
21269
21270
21271
21272
21273
21274
21275
21276
21277
21278
21279
21280
21281
21282
21283
21284
21285
21286
21287
21288
21289
21290
21291
21292
21293
21294
21295
21296
21297
21298
21299
21300
21301
21302
21303
21304
21305
21306
21307
21308
21309
21310
21311
21312
21313
21314
21315
21316
21317
21318
21319
21320
21321
21322
21323
21324
21325
21326
21327
21328
21329
21330
21331
21332
21333
21334
21335
21336
21337
21338
21339
21340
21341
21342
21343
21344
21345
21346
21347
21348
21349
21350
21351
21352
21353
21354
21355
21356
21357
21358
21359
21360
21361
21362
21363
21364
21365
21366
21367
21368
21369
21370
21371
21372
21373
21374
21375
21376
21377
21378
21379
21380
21381
21382
21383
21384
21385
21386
21387
21388
21389
21390
21391
21392
21393
21394
21395
21396
21397
21398
21399
21400
21401
21402
21403
21404
21405
21406
21407
21408
21409
21410
21411
21412
21413
21414
21415
21416
21417
21418
21419
21420
21421
21422
21423
21424
21425
21426
21427
21428
21429
21430
21431
21432
21433
21434
21435
21436
21437
21438
21439
21440
21441
21442
21443
21444
21445
21446
21447
21448
21449
21450
21451
21452
21453
21454
21455
21456
21457
21458
21459
21460
21461
21462
21463
21464
21465
21466
21467
21468
21469
21470
21471
21472
21473
21474
21475
21476
21477
21478
21479
21480
21481
21482
21483
21484
21485
21486
21487
21488
21489
21490
21491
21492
21493
21494
21495
21496
21497
21498
21499
21500
21501
21502
21503
21504
21505
21506
21507
21508
21509
21510
21511
21512
21513
21514
21515
21516
21517
21518
21519
21520
21521
21522
21523
21524
21525
21526
21527
21528
21529
21530
21531
21532
21533
21534
21535
21536
21537
21538
21539
21540
21541
21542
21543
21544
21545
21546
21547
21548
21549
21550
21551
21552
21553
21554
21555
21556
21557
21558
21559
21560
21561
21562
21563
21564
21565
21566
21567
21568
21569
21570
21571
21572
21573
21574
21575
21576
21577
21578
21579
21580
21581
21582
21583
21584
21585
21586
21587
21588
21589
21590
21591
21592
21593
21594
21595
21596
21597
21598
21599
21600
21601
21602
21603
21604
21605
21606
21607
21608
21609
21610
21611
21612
21613
21614
21615
21616
21617
21618
21619
21620
21621
21622
21623
21624
21625
21626
21627
21628
21629
21630
21631
21632
21633
21634
21635
21636
21637
21638
21639
21640
21641
21642
21643
21644
21645
21646
21647
21648
21649
21650
21651
21652
21653
21654
21655
21656
21657
21658
21659
21660
21661
21662
21663
21664
21665
21666
21667
21668
21669
21670
21671
21672
21673
21674
21675
21676
21677
21678
21679
21680
21681
21682
21683
21684
21685
21686
21687
21688
21689
21690
21691
21692
21693
21694
21695
21696
21697
21698
21699
21700
21701
21702
21703
21704
21705
21706
21707
21708
21709
21710
21711
21712
21713
21714
21715
21716
21717
21718
21719
21720
21721
21722
21723
21724
21725
21726
21727
21728
21729
21730
21731
21732
21733
21734
21735
21736
21737
21738
21739
21740
21741
21742
21743
21744
21745
21746
21747
21748
21749
21750
21751
21752
21753
21754
21755
21756
21757
21758
21759
21760
21761
21762
21763
21764
21765
21766
21767
21768
21769
21770
21771
21772
21773
21774
21775
21776
21777
21778
21779
21780
21781
21782
21783
21784
21785
21786
21787
21788
21789
21790
21791
21792
21793
21794
21795
21796
21797
21798
21799
21800
21801
21802
21803
21804
21805
21806
21807
21808
21809
21810
21811
21812
21813
21814
21815
21816
21817
21818
21819
21820
21821
21822
21823
21824
21825
21826
21827
21828
21829
21830
21831
21832
21833
21834
21835
21836
21837
21838
21839
21840
21841
21842
21843
21844
21845
21846
21847
21848
21849
21850
21851
21852
21853
21854
21855
21856
21857
21858
21859
21860
21861
21862
21863
21864
21865
21866
21867
21868
21869
21870
21871
21872
21873
21874
21875
21876
21877
21878
21879
21880
21881
21882
21883
21884
21885
21886
21887
21888
21889
21890
21891
21892
21893
21894
21895
21896
21897
21898
21899
21900
21901
21902
21903
21904
21905
21906
21907
21908
21909
21910
21911
21912
21913
21914
21915
21916
21917
21918
21919
21920
21921
21922
21923
21924
21925
21926
21927
21928
21929
21930
21931
21932
21933
21934
21935
21936
21937
21938
21939
21940
21941
21942
21943
21944
21945
21946
21947
21948
21949
21950
21951
21952
21953
21954
21955
21956
21957
21958
21959
21960
21961
21962
21963
21964
21965
21966
21967
21968
21969
21970
21971
21972
21973
21974
21975
21976
21977
21978
21979
21980
21981
21982
21983
21984
21985
21986
21987
21988
21989
21990
21991
21992
21993
21994
21995
21996
21997
21998
21999
22000
22001
22002
22003
22004
22005
22006
22007
22008
22009
22010
22011
22012
22013
22014
22015
22016
22017
22018
22019
22020
22021
22022
22023
22024
22025
22026
22027
22028
22029
22030
22031
22032
22033
22034
22035
22036
22037
22038
22039
22040
22041
22042
22043
22044
22045
22046
22047
22048
22049
22050
22051
22052
22053
22054
22055
22056
22057
22058
22059
22060
22061
22062
22063
22064
22065
22066
22067
22068
22069
22070
22071
22072
22073
22074
22075
22076
22077
22078
22079
22080
22081
22082
22083
22084
22085
22086
22087
22088
22089
22090
22091
22092
22093
22094
22095
22096
22097
22098
22099
22100
22101
22102
22103
22104
22105
22106
22107
22108
22109
22110
22111
22112
22113
22114
22115
22116
22117
22118
22119
22120
22121
22122
22123
22124
22125
22126
22127
22128
22129
22130
22131
22132
22133
22134
22135
22136
22137
22138
22139
22140
22141
22142
22143
22144
22145
22146
22147
22148
22149
22150
22151
22152
22153
22154
22155
22156
22157
22158
22159
22160
22161
22162
22163
22164
22165
22166
22167
22168
22169
22170
22171
22172
22173
22174
22175
22176
22177
22178
22179
22180
22181
22182
22183
22184
22185
22186
22187
22188
22189
22190
22191
22192
22193
22194
22195
22196
22197
22198
22199
22200
22201
22202
22203
22204
22205
22206
22207
22208
22209
22210
22211
22212
22213
22214
22215
22216
22217
22218
22219
22220
22221
22222
22223
22224
22225
22226
22227
22228
22229
22230
22231
22232
22233
22234
22235
22236
22237
22238
22239
22240
22241
22242
22243
22244
22245
22246
22247
22248
22249
22250
22251
22252
22253
22254
22255
22256
22257
22258
22259
22260
22261
22262
22263
22264
22265
22266
22267
22268
22269
22270
22271
22272
22273
22274
22275
22276
22277
22278
22279
22280
22281
22282
22283
22284
22285
22286
22287
22288
22289
22290
22291
22292
22293
22294
22295
22296
22297
22298
22299
22300
22301
22302
22303
22304
22305
22306
22307
22308
22309
22310
22311
22312
22313
22314
22315
22316
22317
22318
22319
22320
22321
22322
22323
22324
22325
22326
22327
22328
22329
22330
22331
22332
22333
22334
22335
22336
22337
22338
22339
22340
22341
22342
22343
22344
22345
22346
22347
22348
22349
22350
22351
22352
22353
22354
22355
22356
22357
22358
22359
22360
22361
22362
22363
22364
22365
22366
22367
22368
22369
22370
22371
22372
22373
22374
22375
22376
22377
22378
22379
22380
22381
22382
22383
22384
22385
22386
22387
22388
22389
22390
22391
22392
22393
22394
22395
22396
22397
22398
22399
22400
22401
22402
22403
22404
22405
22406
22407
22408
22409
22410
22411
22412
22413
22414
22415
22416
22417
22418
22419
22420
22421
22422
22423
22424
22425
22426
22427
22428
22429
22430
22431
22432
22433
22434
22435
22436
22437
22438
22439
22440
22441
22442
22443
22444
22445
22446
22447
22448
22449
22450
22451
22452
22453
22454
22455
22456
22457
22458
22459
22460
22461
22462
22463
22464
22465
22466
22467
22468
22469
22470
22471
22472
22473
22474
22475
22476
22477
22478
22479
22480
22481
22482
22483
22484
22485
22486
22487
22488
22489
22490
22491
22492
22493
22494
22495
22496
22497
22498
22499
22500
22501
22502
22503
22504
22505
22506
22507
22508
22509
22510
22511
22512
22513
22514
22515
22516
22517
22518
22519
22520
22521
22522
22523
22524
22525
22526
22527
22528
22529
22530
22531
22532
22533
22534
22535
22536
22537
22538
22539
22540
22541
22542
22543
22544
22545
22546
22547
22548
22549
22550
22551
22552
22553
22554
22555
22556
22557
22558
22559
22560
22561
22562
22563
22564
22565
22566
22567
22568
22569
22570
22571
22572
22573
22574
22575
22576
22577
22578
22579
22580
22581
22582
22583
22584
22585
22586
22587
22588
22589
22590
22591
22592
22593
22594
22595
22596
22597
22598
22599
22600
22601
22602
22603
22604
22605
22606
22607
22608
22609
22610
22611
22612
22613
22614
22615
22616
22617
22618
22619
22620
22621
22622
22623
22624
22625
22626
22627
22628
22629
22630
22631
22632
22633
22634
22635
22636
22637
22638
22639
22640
22641
22642
22643
22644
22645
22646
22647
22648
22649
22650
22651
22652
22653
22654
22655
22656
22657
22658
22659
22660
22661
22662
22663
22664
22665
22666
22667
22668
22669
22670
22671
22672
22673
22674
22675
22676
22677
22678
22679
22680
22681
22682
22683
22684
22685
22686
22687
22688
22689
22690
22691
22692
22693
22694
22695
22696
22697
22698
22699
22700
22701
22702
22703
22704
22705
22706
22707
22708
22709
22710
22711
22712
22713
22714
22715
22716
22717
22718
22719
22720
22721
22722
22723
22724
22725
22726
22727
22728
22729
22730
22731
22732
22733
22734
22735
22736
22737
22738
22739
22740
22741
22742
22743
22744
22745
22746
22747
22748
22749
22750
22751
22752
22753
22754
22755
22756
22757
22758
22759
22760
22761
22762
22763
22764
22765
22766
22767
22768
22769
22770
22771
22772
22773
22774
22775
22776
22777
22778
22779
22780
22781
22782
22783
22784
22785
22786
22787
22788
22789
22790
22791
22792
22793
22794
22795
22796
22797
22798
22799
22800
22801
22802
22803
22804
22805
22806
22807
22808
22809
22810
22811
22812
22813
22814
22815
22816
22817
22818
22819
22820
22821
22822
22823
22824
22825
22826
22827
22828
22829
22830
22831
22832
22833
22834
22835
22836
22837
22838
22839
22840
22841
22842
22843
22844
22845
22846
22847
22848
22849
22850
22851
22852
22853
22854
22855
22856
22857
22858
22859
22860
22861
22862
22863
22864
22865
22866
22867
22868
22869
22870
22871
22872
22873
22874
22875
22876
22877
22878
22879
22880
22881
22882
22883
22884
22885
22886
22887
22888
22889
22890
22891
22892
22893
22894
22895
22896
22897
22898
22899
22900
22901
22902
22903
22904
22905
22906
22907
22908
22909
22910
22911
22912
22913
22914
22915
22916
22917
22918
22919
22920
22921
22922
22923
22924
22925
22926
22927
22928
22929
22930
22931
22932
22933
22934
22935
22936
22937
22938
22939
22940
22941
22942
22943
22944
22945
22946
22947
22948
22949
22950
22951
22952
22953
22954
22955
22956
22957
22958
22959
22960
22961
22962
22963
22964
22965
22966
22967
22968
22969
22970
22971
22972
22973
22974
22975
22976
22977
22978
22979
22980
22981
22982
22983
22984
22985
22986
22987
22988
22989
22990
22991
22992
22993
22994
22995
22996
22997
22998
22999
23000
23001
23002
23003
23004
23005
23006
23007
23008
23009
23010
23011
23012
23013
23014
23015
23016
23017
23018
23019
23020
23021
23022
23023
23024
23025
23026
23027
23028
23029
23030
23031
23032
23033
23034
23035
23036
23037
23038
23039
23040
23041
23042
23043
23044
23045
23046
23047
23048
23049
23050
23051
23052
23053
23054
23055
23056
23057
23058
23059
23060
23061
23062
23063
23064
23065
23066
23067
23068
23069
23070
23071
23072
23073
23074
23075
23076
23077
23078
23079
23080
23081
23082
23083
23084
23085
23086
23087
23088
23089
23090
23091
23092
23093
23094
23095
23096
23097
23098
23099
23100
23101
23102
23103
23104
23105
23106
23107
23108
23109
23110
23111
23112
23113
23114
23115
23116
23117
23118
23119
23120
23121
23122
23123
23124
23125
23126
23127
23128
23129
23130
23131
23132
23133
23134
23135
23136
23137
23138
23139
23140
23141
23142
23143
23144
23145
23146
23147
23148
23149
23150
23151
23152
23153
23154
23155
23156
23157
23158
23159
23160
23161
23162
23163
23164
23165
23166
23167
23168
23169
23170
23171
23172
23173
23174
23175
23176
23177
23178
23179
23180
23181
23182
23183
23184
23185
23186
23187
23188
23189
23190
23191
23192
23193
23194
23195
23196
23197
23198
23199
23200
23201
23202
23203
23204
23205
23206
23207
23208
23209
23210
23211
23212
23213
23214
23215
23216
23217
23218
23219
23220
23221
23222
23223
23224
23225
23226
23227
23228
23229
23230
23231
23232
23233
23234
23235
23236
23237
23238
23239
23240
23241
23242
23243
23244
23245
23246
23247
23248
23249
23250
23251
23252
23253
23254
23255
23256
23257
23258
23259
23260
23261
23262
23263
23264
23265
23266
23267
23268
23269
23270
23271
23272
23273
23274
23275
23276
23277
23278
23279
23280
23281
23282
23283
23284
23285
23286
23287
23288
23289
23290
23291
23292
23293
23294
23295
23296
23297
23298
23299
23300
23301
23302
23303
23304
23305
23306
23307
23308
23309
23310
23311
23312
23313
23314
23315
23316
23317
23318
23319
23320
23321
23322
23323
23324
23325
23326
23327
23328
23329
23330
23331
23332
23333
23334
23335
23336
23337
23338
23339
23340
23341
23342
23343
23344
23345
23346
23347
23348
23349
23350
23351
23352
23353
23354
23355
23356
23357
23358
23359
23360
23361
23362
23363
23364
23365
23366
23367
23368
23369
23370
23371
23372
23373
23374
23375
23376
23377
23378
23379
23380
23381
23382
23383
23384
23385
23386
23387
23388
23389
23390
23391
23392
23393
23394
23395
23396
23397
23398
23399
23400
23401
23402
23403
23404
23405
23406
23407
23408
23409
23410
23411
23412
23413
23414
23415
23416
23417
23418
23419
23420
23421
23422
23423
23424
23425
23426
23427
23428
23429
23430
23431
23432
23433
23434
23435
23436
23437
23438
23439
23440
23441
23442
23443
23444
23445
23446
23447
23448
23449
23450
23451
23452
23453
23454
23455
23456
23457
23458
23459
23460
23461
23462
23463
23464
23465
23466
23467
23468
23469
23470
23471
23472
23473
23474
23475
23476
23477
23478
23479
23480
23481
23482
23483
23484
23485
23486
23487
23488
23489
23490
23491
23492
23493
23494
23495
23496
23497
23498
23499
23500
23501
23502
23503
23504
23505
23506
23507
23508
23509
23510
23511
23512
23513
23514
23515
23516
23517
23518
23519
23520
23521
23522
23523
23524
23525
23526
23527
23528
23529
23530
23531
23532
23533
23534
23535
23536
23537
23538
23539
23540
23541
23542
23543
23544
23545
23546
23547
23548
23549
23550
23551
23552
23553
23554
23555
23556
23557
23558
23559
23560
23561
23562
23563
23564
23565
23566
23567
23568
23569
23570
23571
23572
23573
23574
23575
23576
23577
23578
23579
23580
23581
23582
23583
23584
23585
23586
23587
23588
23589
23590
23591
23592
23593
23594
23595
23596
23597
23598
23599
23600
23601
23602
23603
23604
23605
23606
23607
23608
23609
23610
23611
23612
23613
23614
23615
23616
23617
23618
23619
23620
23621
23622
23623
23624
23625
23626
23627
23628
23629
23630
23631
23632
23633
23634
23635
23636
23637
23638
23639
23640
23641
23642
23643
23644
23645
23646
23647
23648
23649
23650
23651
23652
23653
23654
23655
23656
23657
23658
23659
23660
23661
23662
23663
23664
23665
23666
23667
23668
23669
23670
23671
23672
23673
23674
23675
23676
23677
23678
23679
23680
23681
23682
23683
23684
23685
23686
23687
23688
23689
23690
23691
23692
23693
23694
23695
23696
23697
23698
23699
23700
23701
23702
23703
23704
23705
23706
23707
23708
23709
23710
23711
23712
23713
23714
23715
23716
23717
23718
23719
23720
23721
23722
23723
23724
23725
23726
23727
23728
23729
23730
23731
23732
23733
23734
23735
23736
23737
23738
23739
23740
23741
23742
23743
23744
23745
23746
23747
23748
23749
23750
23751
23752
23753
23754
23755
23756
23757
23758
23759
23760
23761
23762
23763
23764
23765
23766
23767
23768
23769
23770
23771
23772
23773
23774
23775
23776
23777
23778
23779
23780
23781
23782
23783
23784
23785
23786
23787
23788
23789
23790
23791
23792
23793
23794
23795
23796
23797
23798
23799
23800
23801
23802
23803
23804
23805
23806
23807
23808
23809
23810
23811
23812
23813
23814
23815
23816
23817
23818
23819
23820
23821
23822
23823
23824
23825
23826
23827
23828
23829
23830
23831
23832
23833
23834
23835
23836
23837
23838
23839
23840
23841
23842
23843
23844
23845
23846
23847
23848
23849
23850
23851
23852
23853
23854
23855
23856
23857
23858
23859
23860
23861
23862
23863
23864
23865
23866
23867
23868
23869
23870
23871
23872
23873
23874
23875
23876
23877
23878
23879
23880
23881
23882
23883
23884
23885
23886
23887
23888
23889
23890
23891
23892
23893
23894
23895
23896
23897
23898
23899
23900
23901
23902
23903
23904
23905
23906
23907
23908
23909
23910
23911
23912
23913
23914
23915
23916
23917
23918
23919
23920
23921
23922
23923
23924
23925
23926
23927
23928
23929
23930
23931
23932
23933
23934
23935
23936
23937
23938
23939
23940
23941
23942
23943
23944
23945
23946
23947
23948
23949
23950
23951
23952
23953
23954
23955
23956
23957
23958
23959
23960
23961
23962
23963
23964
23965
23966
23967
23968
23969
23970
23971
23972
23973
23974
23975
23976
23977
23978
23979
23980
23981
23982
23983
23984
23985
23986
23987
23988
23989
23990
23991
23992
23993
23994
23995
23996
23997
23998
23999
24000
24001
24002
24003
24004
24005
24006
24007
24008
24009
24010
24011
24012
24013
24014
24015
24016
24017
24018
24019
24020
24021
24022
24023
24024
24025
24026
24027
24028
24029
24030
24031
24032
24033
24034
24035
24036
24037
24038
24039
24040
24041
24042
24043
24044
24045
24046
24047
24048
24049
24050
24051
24052
24053
24054
24055
24056
24057
24058
24059
24060
24061
24062
24063
24064
24065
24066
24067
24068
24069
24070
24071
24072
24073
24074
24075
24076
24077
24078
24079
24080
24081
24082
24083
24084
24085
24086
24087
24088
24089
24090
24091
24092
24093
24094
24095
24096
24097
24098
24099
24100
24101
24102
24103
24104
24105
24106
24107
24108
24109
24110
24111
24112
24113
24114
24115
24116
24117
24118
24119
24120
24121
24122
24123
24124
24125
24126
24127
24128
24129
24130
24131
24132
24133
24134
24135
24136
24137
24138
24139
24140
24141
24142
24143
24144
24145
24146
24147
24148
24149
24150
24151
24152
24153
24154
24155
24156
24157
24158
24159
24160
24161
24162
24163
24164
24165
24166
24167
24168
24169
24170
24171
24172
24173
24174
24175
24176
24177
24178
24179
24180
24181
24182
24183
24184
24185
24186
24187
24188
24189
24190
24191
24192
24193
24194
24195
24196
24197
24198
24199
24200
24201
24202
24203
24204
24205
24206
24207
24208
24209
24210
24211
24212
24213
24214
24215
24216
24217
24218
24219
24220
24221
24222
24223
24224
24225
24226
24227
24228
24229
24230
24231
24232
24233
24234
24235
24236
24237
24238
24239
24240
24241
24242
24243
24244
24245
24246
24247
24248
24249
24250
24251
24252
24253
24254
24255
24256
24257
24258
24259
24260
24261
24262
24263
24264
24265
24266
24267
24268
24269
24270
24271
24272
24273
24274
24275
24276
24277
24278
24279
24280
24281
24282
24283
24284
24285
24286
24287
24288
24289
24290
24291
24292
24293
24294
24295
24296
24297
24298
24299
24300
24301
24302
24303
24304
24305
24306
24307
24308
24309
24310
24311
24312
24313
24314
24315
24316
24317
24318
24319
24320
24321
24322
24323
24324
24325
24326
24327
24328
24329
24330
24331
24332
24333
24334
24335
24336
24337
24338
24339
24340
24341
24342
24343
24344
24345
24346
24347
24348
24349
24350
24351
24352
24353
24354
24355
24356
24357
24358
24359
24360
24361
24362
24363
24364
24365
24366
24367
24368
24369
24370
24371
24372
24373
24374
24375
24376
24377
24378
24379
24380
24381
24382
24383
24384
24385
24386
24387
24388
24389
24390
24391
24392
24393
24394
24395
24396
24397
24398
24399
24400
24401
24402
24403
24404
24405
24406
24407
24408
24409
24410
24411
24412
24413
24414
24415
24416
24417
24418
24419
24420
24421
24422
24423
24424
24425
24426
24427
24428
24429
24430
24431
24432
24433
24434
24435
24436
24437
24438
24439
24440
24441
24442
24443
24444
24445
24446
24447
24448
24449
24450
24451
24452
24453
24454
24455
24456
24457
24458
24459
24460
24461
24462
24463
24464
24465
24466
24467
24468
24469
24470
24471
24472
24473
24474
24475
24476
24477
24478
24479
24480
24481
24482
24483
24484
24485
24486
24487
24488
24489
24490
24491
24492
24493
24494
24495
24496
24497
24498
24499
24500
24501
24502
24503
24504
24505
24506
24507
24508
24509
24510
24511
24512
24513
24514
24515
24516
24517
24518
24519
24520
24521
24522
24523
24524
24525
24526
24527
24528
24529
24530
24531
24532
24533
24534
24535
24536
24537
24538
24539
24540
24541
24542
24543
24544
24545
24546
24547
24548
24549
24550
24551
24552
24553
24554
24555
24556
24557
24558
24559
24560
24561
24562
24563
24564
24565
24566
24567
24568
24569
24570
24571
24572
24573
24574
24575
24576
24577
24578
24579
24580
24581
24582
24583
24584
24585
24586
24587
24588
24589
24590
24591
24592
24593
24594
24595
24596
24597
24598
24599
24600
24601
24602
24603
24604
24605
24606
24607
24608
24609
24610
24611
24612
24613
24614
24615
24616
24617
24618
24619
24620
24621
24622
24623
24624
24625
24626
24627
24628
24629
24630
24631
24632
24633
24634
24635
24636
24637
24638
24639
24640
24641
24642
24643
24644
24645
24646
24647
24648
24649
24650
24651
24652
24653
24654
24655
24656
24657
24658
24659
24660
24661
24662
24663
24664
24665
24666
24667
24668
24669
24670
24671
24672
24673
24674
24675
24676
24677
24678
24679
24680
24681
24682
24683
24684
24685
24686
24687
24688
24689
24690
24691
24692
24693
24694
24695
24696
24697
24698
24699
24700
24701
24702
24703
24704
24705
24706
24707
24708
24709
24710
24711
24712
24713
24714
24715
24716
24717
24718
24719
24720
24721
24722
24723
24724
24725
24726
24727
24728
24729
24730
24731
24732
24733
24734
24735
24736
24737
24738
24739
24740
24741
24742
24743
24744
24745
24746
24747
24748
24749
24750
24751
24752
24753
24754
24755
24756
24757
24758
24759
24760
24761
24762
24763
24764
24765
24766
24767
24768
24769
24770
24771
24772
24773
24774
24775
24776
24777
24778
24779
24780
24781
24782
24783
24784
24785
24786
24787
24788
24789
24790
24791
24792
24793
24794
24795
24796
24797
24798
24799
24800
24801
24802
24803
24804
24805
24806
24807
24808
24809
24810
24811
24812
24813
24814
24815
24816
24817
24818
24819
24820
24821
24822
24823
24824
24825
24826
24827
24828
24829
24830
24831
24832
24833
24834
24835
24836
24837
24838
24839
24840
24841
24842
24843
24844
24845
24846
24847
24848
24849
24850
24851
24852
24853
24854
24855
24856
24857
24858
24859
24860
24861
24862
24863
24864
24865
24866
24867
24868
24869
24870
24871
24872
24873
24874
24875
24876
24877
24878
24879
24880
24881
24882
24883
24884
24885
24886
24887
24888
24889
24890
24891
24892
24893
24894
24895
24896
24897
24898
24899
24900
24901
24902
24903
24904
24905
24906
24907
24908
24909
24910
24911
24912
24913
24914
24915
24916
24917
24918
24919
24920
24921
24922
24923
24924
24925
24926
24927
24928
24929
24930
24931
24932
24933
24934
24935
24936
24937
24938
24939
24940
24941
24942
24943
24944
24945
24946
24947
24948
24949
24950
24951
24952
24953
24954
24955
24956
24957
24958
24959
24960
24961
24962
24963
24964
24965
24966
24967
24968
24969
24970
24971
24972
24973
24974
24975
24976
24977
24978
24979
24980
24981
24982
24983
24984
24985
24986
24987
24988
24989
24990
24991
24992
24993
24994
24995
24996
24997
24998
24999
25000
25001
25002
25003
25004
25005
25006
25007
25008
25009
25010
25011
25012
25013
25014
25015
25016
25017
25018
25019
25020
25021
25022
25023
25024
25025
25026
25027
25028
25029
25030
25031
25032
25033
25034
25035
25036
25037
25038
25039
25040
25041
25042
25043
25044
25045
25046
25047
25048
25049
25050
25051
25052
25053
25054
25055
25056
25057
25058
25059
25060
25061
25062
25063
25064
25065
25066
25067
25068
25069
25070
25071
25072
25073
25074
25075
25076
25077
25078
25079
25080
25081
25082
25083
25084
25085
25086
25087
25088
25089
25090
25091
25092
25093
25094
25095
25096
25097
25098
25099
25100
25101
25102
25103
25104
25105
25106
25107
25108
25109
25110
25111
25112
25113
25114
25115
25116
25117
25118
25119
25120
25121
25122
25123
25124
25125
25126
25127
25128
25129
25130
25131
25132
25133
25134
25135
25136
25137
25138
25139
25140
25141
25142
25143
25144
25145
25146
25147
25148
25149
25150
25151
25152
25153
25154
25155
25156
25157
25158
25159
25160
25161
25162
25163
25164
25165
25166
25167
25168
25169
25170
25171
25172
25173
25174
25175
25176
25177
25178
25179
25180
25181
25182
25183
25184
25185
25186
25187
25188
25189
25190
25191
25192
25193
25194
25195
25196
25197
25198
25199
25200
25201
25202
25203
25204
25205
25206
25207
25208
25209
25210
25211
25212
25213
25214
25215
25216
25217
25218
25219
25220
25221
25222
25223
25224
25225
25226
25227
25228
25229
25230
25231
25232
25233
25234
25235
25236
25237
25238
25239
25240
25241
25242
25243
25244
25245
25246
25247
25248
25249
25250
25251
25252
25253
25254
25255
25256
25257
25258
25259
25260
25261
25262
25263
25264
25265
25266
25267
25268
25269
25270
25271
25272
25273
25274
25275
25276
25277
25278
25279
25280
25281
25282
25283
25284
25285
25286
25287
25288
25289
25290
25291
25292
25293
25294
25295
25296
25297
25298
25299
25300
25301
25302
25303
25304
25305
25306
25307
25308
25309
25310
25311
25312
25313
25314
25315
25316
25317
25318
25319
25320
25321
25322
25323
25324
25325
25326
25327
25328
25329
25330
25331
25332
25333
25334
25335
25336
25337
25338
25339
25340
25341
25342
25343
25344
25345
25346
25347
25348
25349
25350
25351
25352
25353
25354
25355
25356
25357
25358
25359
25360
25361
25362
25363
25364
25365
25366
25367
25368
25369
25370
25371
25372
25373
25374
25375
25376
25377
25378
25379
25380
25381
25382
25383
25384
25385
25386
25387
25388
25389
25390
25391
25392
25393
25394
25395
25396
25397
25398
25399
25400
25401
25402
25403
25404
25405
25406
25407
25408
25409
25410
25411
25412
25413
25414
25415
25416
25417
25418
25419
25420
25421
25422
25423
25424
25425
25426
25427
25428
25429
25430
25431
25432
25433
25434
25435
25436
25437
25438
25439
25440
25441
25442
25443
25444
25445
25446
25447
25448
25449
25450
25451
25452
25453
25454
25455
25456
25457
25458
25459
25460
25461
25462
25463
25464
25465
25466
25467
25468
25469
25470
25471
25472
25473
25474
25475
25476
25477
25478
25479
25480
25481
25482
25483
25484
25485
25486
25487
25488
25489
25490
25491
25492
25493
25494
25495
25496
25497
25498
25499
25500
25501
25502
25503
25504
25505
25506
25507
25508
25509
25510
25511
25512
25513
25514
25515
25516
25517
25518
25519
25520
25521
25522
25523
25524
25525
25526
25527
25528
25529
25530
25531
25532
25533
25534
25535
25536
25537
25538
25539
25540
25541
25542
25543
25544
25545
25546
25547
25548
25549
25550
25551
25552
25553
25554
25555
25556
25557
25558
25559
25560
25561
25562
25563
25564
25565
25566
25567
25568
25569
25570
25571
25572
25573
25574
25575
25576
25577
25578
25579
25580
25581
25582
25583
25584
25585
25586
25587
25588
25589
25590
25591
25592
25593
25594
25595
25596
25597
25598
25599
25600
25601
25602
25603
25604
25605
25606
25607
25608
25609
25610
25611
25612
25613
25614
25615
25616
25617
25618
25619
25620
25621
25622
25623
25624
25625
25626
25627
25628
25629
25630
25631
25632
25633
25634
25635
25636
25637
25638
25639
25640
25641
25642
25643
25644
25645
25646
25647
25648
25649
25650
25651
25652
25653
25654
25655
25656
25657
25658
25659
25660
25661
25662
25663
25664
25665
25666
25667
25668
25669
25670
25671
25672
25673
25674
25675
25676
25677
25678
25679
25680
25681
25682
25683
25684
25685
25686
25687
25688
25689
25690
25691
25692
25693
25694
25695
25696
25697
25698
25699
25700
25701
25702
25703
25704
25705
25706
25707
25708
25709
25710
25711
25712
25713
25714
25715
25716
25717
25718
25719
25720
25721
25722
25723
25724
25725
25726
25727
25728
25729
25730
25731
25732
25733
25734
25735
25736
25737
25738
25739
25740
25741
25742
25743
25744
25745
25746
25747
25748
25749
25750
25751
25752
25753
25754
25755
25756
25757
25758
25759
25760
25761
25762
25763
25764
25765
25766
25767
25768
25769
25770
25771
25772
25773
25774
25775
25776
25777
25778
25779
25780
25781
25782
25783
25784
25785
25786
25787
25788
25789
25790
25791
25792
25793
25794
25795
25796
25797
25798
25799
25800
25801
25802
25803
25804
25805
25806
25807
25808
25809
25810
25811
25812
25813
25814
25815
25816
25817
25818
25819
25820
25821
25822
25823
25824
25825
25826
25827
25828
25829
25830
25831
25832
25833
25834
25835
25836
25837
25838
25839
25840
25841
25842
25843
25844
25845
25846
25847
25848
25849
25850
25851
25852
25853
25854
25855
25856
25857
25858
25859
25860
25861
25862
25863
25864
25865
25866
25867
25868
25869
25870
25871
25872
25873
25874
25875
25876
25877
25878
25879
25880
25881
25882
25883
25884
25885
25886
25887
25888
25889
25890
25891
25892
25893
25894
25895
25896
25897
25898
25899
25900
25901
25902
25903
25904
25905
25906
25907
25908
25909
25910
25911
25912
25913
25914
25915
25916
25917
25918
25919
25920
25921
25922
25923
25924
25925
25926
25927
25928
25929
25930
25931
25932
25933
25934
25935
25936
25937
25938
25939
25940
25941
25942
25943
25944
25945
25946
25947
25948
25949
25950
25951
25952
25953
25954
25955
25956
25957
25958
25959
25960
25961
25962
25963
25964
25965
25966
25967
25968
25969
25970
25971
25972
25973
25974
25975
25976
25977
25978
25979
25980
25981
25982
25983
25984
25985
25986
25987
25988
25989
25990
25991
25992
25993
25994
25995
25996
25997
25998
25999
26000
26001
26002
26003
26004
26005
26006
26007
26008
26009
26010
26011
26012
26013
26014
26015
26016
26017
26018
26019
26020
26021
26022
26023
26024
26025
26026
26027
26028
26029
26030
26031
26032
26033
26034
26035
26036
26037
26038
26039
26040
26041
26042
26043
26044
26045
26046
26047
26048
26049
26050
26051
26052
26053
26054
26055
26056
26057
26058
26059
26060
26061
26062
26063
26064
26065
26066
26067
26068
26069
26070
26071
26072
26073
26074
26075
26076
26077
26078
26079
26080
26081
26082
26083
26084
26085
26086
26087
26088
26089
26090
26091
26092
26093
26094
26095
26096
26097
26098
26099
26100
26101
26102
26103
26104
26105
26106
26107
26108
26109
26110
26111
26112
26113
26114
26115
26116
26117
26118
26119
26120
26121
26122
26123
26124
26125
26126
26127
26128
26129
26130
26131
26132
26133
26134
26135
26136
26137
26138
26139
26140
26141
26142
26143
26144
26145
26146
26147
26148
26149
26150
26151
26152
26153
26154
26155
26156
26157
26158
26159
26160
26161
26162
26163
26164
26165
26166
26167
26168
26169
26170
26171
26172
26173
26174
26175
26176
26177
26178
26179
26180
26181
26182
26183
26184
26185
26186
26187
26188
26189
26190
26191
26192
26193
26194
26195
26196
26197
26198
26199
26200
26201
26202
26203
26204
26205
26206
26207
26208
26209
26210
26211
26212
26213
26214
26215
26216
26217
26218
26219
26220
26221
26222
26223
26224
26225
26226
26227
26228
26229
26230
26231
26232
26233
26234
26235
26236
26237
26238
26239
26240
26241
26242
26243
26244
26245
26246
26247
26248
26249
26250
26251
26252
26253
26254
26255
26256
26257
26258
26259
26260
26261
26262
26263
26264
26265
26266
26267
26268
26269
26270
26271
26272
26273
26274
26275
26276
26277
26278
26279
26280
26281
26282
26283
26284
26285
26286
26287
26288
26289
26290
26291
26292
26293
26294
26295
26296
26297
26298
26299
26300
26301
26302
26303
26304
26305
26306
26307
26308
26309
26310
26311
26312
26313
26314
26315
26316
26317
26318
26319
26320
26321
26322
26323
26324
26325
26326
26327
26328
26329
26330
26331
26332
26333
26334
26335
26336
26337
26338
26339
26340
26341
26342
26343
26344
26345
26346
26347
26348
26349
26350
26351
26352
26353
26354
26355
26356
26357
26358
26359
26360
26361
26362
26363
26364
26365
26366
26367
26368
26369
26370
26371
26372
26373
26374
26375
26376
26377
26378
26379
26380
26381
26382
26383
26384
26385
26386
26387
26388
26389
26390
26391
26392
26393
26394
26395
26396
26397
26398
26399
26400
26401
26402
26403
26404
26405
26406
26407
26408
26409
26410
26411
26412
26413
26414
26415
26416
26417
26418
26419
26420
26421
26422
26423
26424
26425
26426
26427
26428
26429
26430
26431
26432
26433
26434
26435
26436
26437
26438
26439
26440
26441
26442
26443
26444
26445
26446
26447
26448
26449
26450
26451
26452
26453
26454
26455
26456
26457
26458
26459
26460
26461
26462
26463
26464
26465
26466
26467
26468
26469
26470
26471
26472
26473
26474
26475
26476
26477
26478
26479
26480
26481
26482
26483
26484
26485
26486
26487
26488
26489
26490
26491
26492
26493
26494
26495
26496
26497
26498
26499
26500
26501
26502
26503
26504
26505
26506
26507
26508
26509
26510
26511
26512
26513
26514
26515
26516
26517
26518
26519
26520
26521
26522
26523
26524
26525
26526
26527
26528
26529
26530
26531
26532
26533
26534
26535
26536
26537
26538
26539
26540
26541
26542
26543
26544
26545
26546
26547
26548
26549
26550
26551
26552
26553
26554
26555
26556
26557
26558
26559
26560
26561
26562
26563
26564
26565
26566
26567
26568
26569
26570
26571
26572
26573
26574
26575
26576
26577
26578
26579
26580
26581
26582
26583
26584
26585
26586
26587
26588
26589
26590
26591
26592
26593
26594
26595
26596
26597
26598
26599
26600
26601
26602
26603
26604
26605
26606
26607
26608
26609
26610
26611
26612
26613
26614
26615
26616
26617
26618
26619
26620
26621
26622
26623
26624
26625
26626
26627
26628
26629
26630
26631
26632
26633
26634
26635
26636
26637
26638
26639
26640
26641
26642
26643
26644
26645
26646
26647
26648
26649
26650
26651
26652
26653
26654
26655
26656
26657
26658
26659
26660
26661
26662
26663
26664
26665
26666
26667
26668
26669
26670
26671
26672
26673
26674
26675
26676
26677
26678
26679
26680
26681
26682
26683
26684
26685
26686
26687
26688
26689
26690
26691
26692
26693
26694
26695
26696
26697
26698
26699
26700
26701
26702
26703
26704
26705
26706
26707
26708
26709
26710
26711
26712
26713
26714
26715
26716
26717
26718
26719
26720
26721
26722
26723
26724
26725
26726
26727
26728
26729
26730
26731
26732
26733
26734
26735
26736
26737
26738
26739
26740
26741
26742
26743
26744
26745
26746
26747
26748
26749
26750
26751
26752
26753
26754
26755
26756
26757
26758
26759
26760
26761
26762
26763
26764
26765
26766
26767
26768
26769
26770
26771
26772
26773
26774
26775
26776
26777
26778
26779
26780
26781
26782
26783
26784
26785
26786
26787
26788
26789
26790
26791
26792
26793
26794
26795
26796
26797
26798
26799
26800
26801
26802
26803
26804
26805
26806
26807
26808
26809
26810
26811
26812
26813
26814
26815
26816
26817
26818
26819
26820
26821
26822
26823
26824
26825
26826
26827
26828
26829
26830
26831
26832
26833
26834
26835
26836
26837
26838
26839
26840
26841
26842
26843
26844
26845
26846
26847
26848
26849
26850
26851
26852
26853
26854
26855
26856
26857
26858
26859
26860
26861
26862
26863
26864
26865
26866
26867
26868
26869
26870
26871
26872
26873
26874
26875
26876
26877
26878
26879
26880
26881
26882
26883
26884
26885
26886
26887
26888
26889
26890
26891
26892
26893
26894
26895
26896
26897
26898
26899
26900
26901
26902
26903
26904
26905
26906
26907
26908
26909
26910
26911
26912
26913
26914
26915
26916
26917
26918
26919
26920
26921
26922
26923
26924
26925
26926
26927
26928
26929
26930
26931
26932
26933
26934
26935
26936
26937
26938
26939
26940
26941
26942
26943
26944
26945
26946
26947
26948
26949
26950
26951
26952
26953
26954
26955
26956
26957
26958
26959
26960
26961
26962
26963
26964
26965
26966
26967
26968
26969
26970
26971
26972
26973
26974
26975
26976
26977
26978
26979
26980
26981
26982
26983
26984
26985
26986
26987
26988
26989
26990
26991
26992
26993
26994
26995
26996
26997
26998
26999
27000
27001
27002
27003
27004
27005
27006
27007
27008
27009
27010
27011
27012
27013
27014
27015
27016
27017
27018
27019
27020
27021
27022
27023
27024
27025
27026
27027
27028
27029
27030
27031
27032
27033
27034
27035
27036
27037
27038
27039
27040
27041
27042
27043
27044
27045
27046
27047
27048
27049
27050
27051
27052
27053
27054
27055
27056
27057
27058
27059
27060
27061
27062
27063
27064
27065
27066
27067
27068
27069
27070
27071
27072
27073
27074
27075
27076
27077
27078
27079
27080
27081
27082
27083
27084
27085
27086
27087
27088
27089
27090
27091
27092
27093
27094
27095
27096
27097
27098
27099
27100
27101
27102
27103
27104
27105
27106
27107
27108
27109
27110
27111
27112
27113
27114
27115
27116
27117
27118
27119
27120
27121
27122
27123
27124
27125
27126
27127
27128
27129
27130
27131
27132
27133
27134
27135
27136
27137
27138
27139
27140
27141
27142
27143
27144
27145
27146
27147
27148
27149
27150
27151
27152
27153
27154
27155
27156
27157
27158
27159
27160
27161
27162
27163
27164
27165
27166
27167
27168
27169
27170
27171
27172
27173
27174
27175
27176
27177
27178
27179
27180
27181
27182
27183
27184
27185
27186
27187
27188
27189
27190
27191
27192
27193
27194
27195
27196
27197
27198
27199
27200
27201
27202
27203
27204
27205
27206
27207
27208
27209
27210
27211
27212
27213
27214
27215
27216
27217
27218
27219
27220
27221
27222
27223
27224
27225
27226
27227
27228
27229
27230
27231
27232
27233
27234
27235
27236
27237
27238
27239
27240
27241
27242
27243
27244
27245
27246
27247
27248
27249
27250
27251
27252
27253
27254
27255
27256
27257
27258
27259
27260
27261
27262
27263
27264
27265
27266
27267
27268
27269
27270
27271
27272
27273
27274
27275
27276
27277
27278
27279
27280
27281
27282
27283
27284
27285
27286
27287
27288
27289
27290
27291
27292
27293
27294
27295
27296
27297
27298
27299
27300
27301
27302
27303
27304
27305
27306
27307
27308
27309
27310
27311
27312
27313
27314
27315
27316
27317
27318
27319
27320
27321
27322
27323
27324
27325
27326
27327
27328
27329
27330
27331
27332
27333
27334
27335
27336
27337
27338
27339
27340
27341
27342
27343
27344
27345
27346
27347
27348
27349
27350
27351
27352
27353
27354
27355
27356
27357
27358
27359
27360
27361
27362
27363
27364
27365
27366
27367
27368
27369
27370
27371
27372
27373
27374
27375
27376
27377
27378
27379
27380
27381
27382
27383
27384
27385
27386
27387
27388
27389
27390
27391
27392
27393
27394
27395
27396
27397
27398
27399
27400
27401
27402
27403
27404
27405
27406
27407
27408
27409
27410
27411
27412
27413
27414
27415
27416
27417
27418
27419
27420
27421
27422
27423
27424
27425
27426
27427
27428
27429
27430
27431
27432
27433
27434
27435
27436
27437
27438
27439
27440
27441
27442
27443
27444
27445
27446
27447
27448
27449
27450
27451
27452
27453
27454
27455
27456
27457
27458
27459
27460
27461
27462
27463
27464
27465
27466
27467
27468
27469
27470
27471
27472
27473
27474
27475
27476
27477
27478
27479
27480
27481
27482
27483
27484
27485
27486
27487
27488
27489
27490
27491
27492
27493
27494
27495
27496
27497
27498
27499
27500
27501
27502
27503
27504
27505
27506
27507
27508
27509
27510
27511
27512
27513
27514
27515
27516
27517
27518
27519
27520
27521
27522
27523
27524
27525
27526
27527
27528
27529
27530
27531
27532
27533
27534
27535
27536
27537
27538
27539
27540
27541
27542
27543
27544
27545
27546
27547
27548
27549
27550
27551
27552
27553
27554
27555
27556
27557
27558
27559
27560
27561
27562
27563
27564
27565
27566
27567
27568
27569
27570
27571
27572
27573
27574
27575
27576
27577
27578
27579
27580
27581
27582
27583
27584
27585
27586
27587
27588
27589
27590
27591
27592
27593
27594
27595
27596
27597
27598
27599
27600
27601
27602
27603
27604
27605
27606
27607
27608
27609
27610
27611
27612
27613
27614
27615
27616
27617
27618
27619
27620
27621
27622
27623
27624
27625
27626
27627
27628
27629
27630
27631
27632
27633
27634
27635
27636
27637
27638
27639
27640
27641
27642
27643
27644
27645
27646
27647
27648
27649
27650
27651
27652
27653
27654
27655
27656
27657
27658
27659
27660
27661
27662
27663
27664
27665
27666
27667
27668
27669
27670
27671
27672
27673
27674
27675
27676
27677
27678
27679
27680
27681
27682
27683
27684
27685
27686
27687
27688
27689
27690
27691
27692
27693
27694
27695
27696
27697
27698
27699
27700
27701
27702
27703
27704
27705
27706
27707
27708
27709
27710
27711
27712
27713
27714
27715
27716
27717
27718
27719
27720
27721
27722
27723
27724
27725
27726
27727
27728
27729
27730
27731
27732
27733
27734
27735
27736
27737
27738
27739
27740
27741
27742
27743
27744
27745
27746
27747
27748
27749
27750
27751
27752
27753
27754
27755
27756
27757
27758
27759
27760
27761
27762
27763
27764
27765
27766
27767
27768
27769
27770
27771
27772
27773
27774
27775
27776
27777
27778
27779
27780
27781
27782
27783
27784
27785
27786
27787
27788
27789
27790
27791
27792
27793
27794
27795
27796
27797
27798
27799
27800
27801
27802
27803
27804
27805
27806
27807
27808
27809
27810
27811
27812
27813
27814
27815
27816
27817
27818
27819
27820
27821
27822
27823
27824
27825
27826
27827
27828
27829
27830
27831
27832
27833
27834
27835
27836
27837
27838
27839
27840
27841
27842
27843
27844
27845
27846
27847
27848
27849
27850
27851
27852
27853
27854
27855
27856
27857
27858
27859
27860
27861
27862
27863
27864
27865
27866
27867
27868
27869
27870
27871
27872
27873
27874
27875
27876
27877
27878
27879
27880
27881
27882
27883
27884
27885
27886
27887
27888
27889
27890
27891
27892
27893
27894
27895
27896
27897
27898
27899
27900
27901
27902
27903
27904
27905
27906
27907
27908
27909
27910
27911
27912
27913
27914
27915
27916
27917
27918
27919
27920
27921
27922
27923
27924
27925
27926
27927
27928
27929
27930
27931
27932
27933
27934
27935
27936
27937
27938
27939
27940
27941
27942
27943
27944
27945
27946
27947
27948
27949
27950
27951
27952
27953
27954
27955
27956
27957
27958
27959
27960
27961
27962
27963
27964
27965
27966
27967
27968
27969
27970
27971
27972
27973
27974
27975
27976
27977
27978
27979
27980
27981
27982
27983
27984
27985
27986
27987
27988
27989
27990
27991
27992
27993
27994
27995
27996
27997
27998
27999
28000
28001
28002
28003
28004
28005
28006
28007
28008
28009
28010
28011
28012
28013
28014
28015
28016
28017
28018
28019
28020
28021
28022
28023
28024
28025
28026
28027
28028
28029
28030
28031
28032
28033
28034
28035
28036
28037
28038
28039
28040
28041
28042
28043
28044
28045
28046
28047
28048
28049
28050
28051
28052
28053
28054
28055
28056
28057
28058
28059
28060
28061
28062
28063
28064
28065
28066
28067
28068
28069
28070
28071
28072
28073
28074
28075
28076
28077
28078
28079
28080
28081
28082
28083
28084
28085
28086
28087
28088
28089
28090
28091
28092
28093
28094
28095
28096
28097
28098
28099
28100
28101
28102
28103
28104
28105
28106
28107
28108
28109
28110
28111
28112
28113
28114
28115
28116
28117
28118
28119
28120
28121
28122
28123
28124
28125
28126
28127
28128
28129
28130
28131
28132
28133
28134
28135
28136
28137
28138
28139
28140
28141
28142
28143
28144
28145
28146
28147
28148
28149
28150
28151
28152
28153
28154
28155
28156
28157
28158
28159
28160
28161
28162
28163
28164
28165
28166
28167
28168
28169
28170
28171
28172
28173
28174
28175
28176
28177
28178
28179
28180
28181
28182
28183
28184
28185
28186
28187
28188
28189
28190
28191
28192
28193
28194
28195
28196
28197
28198
28199
28200
28201
28202
28203
28204
28205
28206
28207
28208
28209
28210
28211
28212
28213
28214
28215
28216
28217
28218
28219
28220
28221
28222
28223
28224
28225
28226
28227
28228
28229
28230
28231
28232
28233
28234
28235
28236
28237
28238
28239
28240
28241
28242
28243
28244
28245
28246
28247
28248
28249
28250
28251
28252
28253
28254
28255
28256
28257
28258
28259
28260
28261
28262
28263
28264
28265
28266
28267
28268
28269
28270
28271
28272
28273
28274
28275
28276
28277
28278
28279
28280
28281
28282
28283
28284
28285
28286
28287
28288
28289
28290
28291
28292
28293
28294
28295
28296
28297
28298
28299
28300
28301
28302
28303
28304
28305
28306
28307
28308
28309
28310
28311
28312
28313
28314
28315
28316
28317
28318
28319
28320
28321
28322
28323
28324
28325
28326
28327
28328
28329
28330
28331
28332
28333
28334
28335
28336
28337
28338
28339
28340
28341
28342
28343
28344
28345
28346
28347
28348
28349
28350
28351
28352
28353
28354
28355
28356
28357
28358
28359
28360
28361
28362
28363
28364
28365
28366
28367
28368
28369
28370
28371
28372
28373
28374
28375
28376
28377
28378
28379
28380
28381
28382
28383
28384
28385
28386
28387
28388
28389
28390
28391
28392
28393
28394
28395
28396
28397
28398
28399
28400
28401
28402
28403
28404
28405
28406
28407
28408
28409
28410
28411
28412
28413
28414
28415
28416
28417
28418
28419
28420
28421
28422
28423
28424
28425
28426
28427
28428
28429
28430
28431
28432
28433
28434
28435
28436
28437
28438
28439
28440
28441
28442
28443
28444
28445
28446
28447
28448
28449
28450
28451
28452
28453
28454
28455
28456
28457
28458
28459
28460
28461
28462
28463
28464
28465
28466
28467
28468
28469
28470
28471
28472
28473
28474
28475
28476
28477
28478
28479
28480
28481
28482
28483
28484
28485
28486
28487
28488
28489
28490
28491
28492
28493
28494
28495
28496
28497
28498
28499
28500
28501
28502
28503
28504
28505
28506
28507
28508
28509
28510
28511
28512
28513
28514
28515
28516
28517
28518
28519
28520
28521
28522
28523
28524
28525
28526
28527
28528
28529
28530
28531
28532
28533
28534
28535
28536
28537
28538
28539
28540
28541
28542
28543
28544
28545
28546
28547
28548
28549
28550
28551
28552
28553
28554
28555
28556
28557
28558
28559
28560
28561
28562
28563
28564
28565
28566
28567
28568
28569
28570
28571
28572
28573
28574
28575
28576
28577
28578
28579
28580
28581
28582
28583
28584
28585
28586
28587
28588
28589
28590
28591
28592
28593
28594
28595
28596
28597
28598
28599
28600
28601
28602
28603
28604
28605
28606
28607
28608
28609
28610
28611
28612
28613
28614
28615
28616
28617
28618
28619
28620
28621
28622
28623
28624
28625
28626
28627
28628
28629
28630
28631
28632
28633
28634
28635
28636
28637
28638
28639
28640
28641
28642
28643
28644
28645
28646
28647
28648
28649
28650
28651
28652
28653
28654
28655
28656
28657
28658
28659
28660
28661
28662
28663
28664
28665
28666
28667
28668
28669
28670
28671
28672
28673
28674
28675
28676
28677
28678
28679
28680
28681
28682
28683
28684
28685
28686
28687
28688
28689
28690
28691
28692
28693
28694
28695
28696
28697
28698
28699
28700
28701
28702
28703
28704
28705
28706
28707
28708
28709
28710
28711
28712
28713
28714
28715
28716
28717
28718
28719
28720
28721
28722
28723
28724
28725
28726
28727
28728
28729
28730
28731
28732
28733
28734
28735
28736
28737
28738
28739
28740
28741
28742
28743
28744
28745
28746
28747
28748
28749
28750
28751
28752
28753
28754
28755
28756
28757
28758
28759
28760
28761
28762
28763
28764
28765
28766
28767
28768
28769
28770
28771
28772
28773
28774
28775
28776
28777
28778
28779
28780
28781
28782
28783
28784
28785
28786
28787
28788
28789
28790
28791
28792
28793
28794
28795
28796
28797
28798
28799
28800
28801
28802
28803
28804
28805
28806
28807
28808
28809
28810
28811
28812
28813
28814
28815
28816
28817
28818
28819
28820
28821
28822
28823
28824
28825
28826
28827
28828
28829
28830
28831
28832
28833
28834
28835
28836
28837
28838
28839
28840
28841
28842
28843
28844
28845
28846
28847
28848
28849
28850
28851
28852
28853
28854
28855
28856
28857
28858
28859
28860
28861
28862
28863
28864
28865
28866
28867
28868
28869
28870
28871
28872
28873
28874
28875
28876
28877
28878
28879
28880
28881
28882
28883
28884
28885
28886
28887
28888
28889
28890
28891
28892
28893
28894
28895
28896
28897
28898
28899
28900
28901
28902
28903
28904
28905
28906
28907
28908
28909
28910
28911
28912
28913
28914
28915
28916
28917
28918
28919
28920
28921
28922
28923
28924
28925
28926
28927
28928
28929
28930
28931
28932
28933
28934
28935
28936
28937
28938
28939
28940
28941
28942
28943
28944
28945
28946
28947
28948
28949
28950
28951
28952
28953
28954
28955
28956
28957
28958
28959
28960
28961
28962
28963
28964
28965
28966
28967
28968
28969
28970
28971
28972
28973
28974
28975
28976
28977
28978
28979
28980
28981
28982
28983
28984
28985
28986
28987
28988
28989
28990
28991
28992
28993
28994
28995
28996
28997
28998
28999
29000
29001
29002
29003
29004
29005
29006
29007
29008
29009
29010
29011
29012
29013
29014
29015
29016
29017
29018
29019
29020
29021
29022
29023
29024
29025
29026
29027
29028
29029
29030
29031
29032
29033
29034
29035
29036
29037
29038
29039
29040
29041
29042
29043
29044
29045
29046
29047
29048
29049
29050
29051
29052
29053
29054
29055
29056
29057
29058
29059
29060
29061
29062
29063
29064
29065
29066
29067
29068
29069
29070
29071
29072
29073
29074
29075
29076
29077
29078
29079
29080
29081
29082
29083
29084
29085
29086
29087
29088
29089
29090
29091
29092
29093
29094
29095
29096
29097
29098
29099
29100
29101
29102
29103
29104
29105
29106
29107
29108
29109
29110
29111
29112
29113
29114
29115
29116
29117
29118
29119
29120
29121
29122
29123
29124
29125
29126
29127
29128
29129
29130
29131
29132
29133
29134
29135
29136
29137
29138
29139
29140
29141
29142
29143
29144
29145
29146
29147
29148
29149
29150
29151
29152
29153
29154
29155
29156
29157
29158
29159
29160
29161
29162
29163
29164
29165
29166
29167
29168
29169
29170
29171
29172
29173
29174
29175
29176
29177
29178
29179
29180
29181
29182
29183
29184
29185
29186
29187
29188
29189
29190
29191
29192
29193
29194
29195
29196
29197
29198
29199
29200
29201
29202
29203
29204
29205
29206
29207
29208
29209
29210
29211
29212
29213
29214
29215
29216
29217
29218
29219
29220
29221
29222
29223
29224
29225
29226
29227
29228
29229
29230
29231
29232
29233
29234
29235
29236
29237
29238
29239
29240
29241
29242
29243
29244
29245
29246
29247
29248
29249
29250
29251
29252
29253
29254
29255
29256
29257
29258
29259
29260
29261
29262
29263
29264
29265
29266
29267
29268
29269
29270
29271
29272
29273
29274
29275
29276
29277
29278
29279
29280
29281
29282
29283
29284
29285
29286
29287
29288
29289
29290
29291
29292
29293
29294
29295
29296
29297
29298
29299
29300
29301
29302
29303
29304
29305
29306
29307
29308
29309
29310
29311
29312
29313
29314
29315
29316
29317
29318
29319
29320
29321
29322
29323
29324
29325
29326
29327
29328
29329
29330
29331
29332
29333
29334
29335
29336
29337
29338
29339
29340
29341
29342
29343
29344
29345
29346
29347
29348
29349
29350
29351
29352
29353
29354
29355
29356
29357
29358
29359
29360
29361
29362
29363
29364
29365
29366
29367
29368
29369
29370
29371
29372
29373
29374
29375
29376
29377
29378
29379
29380
29381
29382
29383
29384
29385
29386
29387
29388
29389
29390
29391
29392
29393
29394
29395
29396
29397
29398
29399
29400
29401
29402
29403
29404
29405
29406
29407
29408
29409
29410
29411
29412
29413
29414
29415
29416
29417
29418
29419
29420
29421
29422
29423
29424
29425
29426
29427
29428
29429
29430
29431
29432
29433
29434
29435
29436
29437
29438
29439
29440
29441
29442
29443
29444
29445
29446
29447
29448
29449
29450
29451
29452
29453
29454
29455
29456
29457
29458
29459
29460
29461
29462
29463
29464
29465
29466
29467
29468
29469
29470
29471
29472
29473
29474
29475
29476
29477
29478
29479
29480
29481
29482
29483
29484
29485
29486
29487
29488
29489
29490
29491
29492
29493
29494
29495
29496
29497
29498
29499
29500
29501
29502
29503
29504
29505
29506
29507
29508
29509
29510
29511
29512
29513
29514
29515
29516
29517
29518
29519
29520
29521
29522
29523
29524
29525
29526
29527
29528
29529
29530
29531
29532
29533
29534
29535
29536
29537
29538
29539
29540
29541
29542
29543
29544
29545
29546
29547
29548
29549
29550
29551
29552
29553
29554
29555
29556
29557
29558
29559
29560
29561
29562
29563
29564
29565
29566
29567
29568
29569
29570
29571
29572
29573
29574
29575
29576
29577
29578
29579
29580
29581
29582
29583
29584
29585
29586
29587
29588
29589
29590
29591
29592
29593
29594
29595
29596
29597
29598
29599
29600
29601
29602
29603
29604
29605
29606
29607
29608
29609
29610
29611
29612
29613
29614
29615
29616
29617
29618
29619
29620
29621
29622
29623
29624
29625
29626
29627
29628
29629
29630
29631
29632
29633
29634
29635
29636
29637
29638
29639
29640
29641
29642
29643
29644
29645
29646
29647
29648
29649
29650
29651
29652
29653
29654
29655
29656
29657
29658
29659
29660
29661
29662
29663
29664
29665
29666
29667
29668
29669
29670
29671
29672
29673
29674
29675
29676
29677
29678
29679
29680
29681
29682
29683
29684
29685
29686
29687
29688
29689
29690
29691
29692
29693
29694
29695
29696
29697
29698
29699
29700
29701
29702
29703
29704
29705
29706
29707
29708
29709
29710
29711
29712
29713
29714
29715
29716
29717
29718
29719
29720
29721
29722
29723
29724
29725
29726
29727
29728
29729
29730
29731
29732
29733
29734
29735
29736
29737
29738
29739
29740
29741
29742
29743
29744
29745
29746
29747
29748
29749
29750
29751
29752
29753
29754
29755
29756
29757
29758
29759
29760
29761
29762
29763
29764
29765
29766
29767
29768
29769
29770
29771
29772
29773
29774
29775
29776
29777
29778
29779
29780
29781
29782
29783
29784
29785
29786
29787
29788
29789
29790
29791
29792
29793
29794
29795
29796
29797
29798
29799
29800
29801
29802
29803
29804
29805
29806
29807
29808
29809
29810
29811
29812
29813
29814
29815
29816
29817
29818
29819
29820
29821
29822
29823
29824
29825
29826
29827
29828
29829
29830
29831
29832
29833
29834
29835
29836
29837
29838
29839
29840
29841
29842
29843
29844
29845
29846
29847
29848
29849
29850
29851
29852
29853
29854
29855
29856
29857
29858
29859
29860
29861
29862
29863
29864
29865
29866
29867
29868
29869
29870
29871
29872
29873
29874
29875
29876
29877
29878
29879
29880
29881
29882
29883
29884
29885
29886
29887
29888
29889
29890
29891
29892
29893
29894
29895
29896
29897
29898
29899
29900
29901
29902
29903
29904
29905
29906
29907
29908
29909
29910
29911
29912
29913
29914
29915
29916
29917
29918
29919
29920
29921
29922
29923
29924
29925
29926
29927
29928
29929
29930
29931
29932
29933
29934
29935
29936
29937
29938
29939
29940
29941
29942
29943
29944
29945
29946
29947
29948
29949
29950
29951
29952
29953
29954
29955
29956
29957
29958
29959
29960
29961
29962
29963
29964
29965
29966
29967
29968
29969
29970
29971
29972
29973
29974
29975
29976
29977
29978
29979
29980
29981
29982
29983
29984
29985
29986
29987
29988
29989
29990
29991
29992
29993
29994
29995
29996
29997
29998
29999
30000
30001
30002
30003
30004
30005
30006
30007
30008
30009
30010
30011
30012
30013
30014
30015
30016
30017
30018
30019
30020
30021
30022
30023
30024
30025
30026
30027
30028
30029
30030
30031
30032
30033
30034
30035
30036
30037
30038
30039
30040
30041
30042
30043
30044
30045
30046
30047
30048
30049
30050
30051
30052
30053
30054
30055
30056
30057
30058
30059
30060
30061
30062
30063
30064
30065
30066
30067
30068
30069
30070
30071
30072
30073
30074
30075
30076
30077
30078
30079
30080
30081
30082
30083
30084
30085
30086
30087
30088
30089
30090
30091
30092
30093
30094
30095
30096
30097
30098
30099
30100
30101
30102
30103
30104
30105
30106
30107
30108
30109
30110
30111
30112
30113
30114
30115
30116
30117
30118
30119
30120
30121
30122
30123
30124
30125
30126
30127
30128
30129
30130
30131
30132
30133
30134
30135
30136
30137
30138
30139
30140
30141
30142
30143
30144
30145
30146
30147
30148
30149
30150
30151
30152
30153
30154
30155
30156
30157
30158
30159
30160
30161
30162
30163
30164
30165
30166
30167
30168
30169
30170
30171
30172
30173
30174
30175
30176
30177
30178
30179
30180
30181
30182
30183
30184
30185
30186
30187
30188
30189
30190
30191
30192
30193
30194
30195
30196
30197
30198
30199
30200
30201
30202
30203
30204
30205
30206
30207
30208
30209
30210
30211
30212
30213
30214
30215
30216
30217
30218
30219
30220
30221
30222
30223
30224
30225
30226
30227
30228
30229
30230
30231
30232
30233
30234
30235
30236
30237
30238
30239
30240
30241
30242
30243
30244
30245
30246
30247
30248
30249
30250
30251
30252
30253
30254
30255
30256
30257
30258
30259
30260
30261
30262
30263
30264
30265
30266
30267
30268
30269
30270
30271
30272
30273
30274
30275
30276
30277
30278
30279
30280
30281
30282
30283
30284
30285
30286
30287
30288
30289
30290
30291
30292
30293
30294
30295
30296
30297
30298
30299
30300
30301
30302
30303
30304
30305
30306
30307
30308
30309
30310
30311
30312
30313
30314
30315
30316
30317
30318
30319
30320
30321
30322
30323
30324
30325
30326
30327
30328
30329
30330
30331
30332
30333
30334
30335
30336
30337
30338
30339
30340
30341
30342
30343
30344
30345
30346
30347
30348
30349
30350
30351
30352
30353
30354
30355
30356
30357
30358
30359
30360
30361
30362
30363
30364
30365
30366
30367
30368
30369
30370
30371
30372
30373
30374
30375
30376
30377
30378
30379
30380
30381
30382
30383
30384
30385
30386
30387
30388
30389
30390
30391
30392
30393
30394
30395
30396
30397
30398
30399
30400
30401
30402
30403
30404
30405
30406
30407
30408
30409
30410
30411
30412
30413
30414
30415
30416
30417
30418
30419
30420
30421
30422
30423
30424
30425
30426
30427
30428
30429
30430
30431
30432
30433
30434
30435
30436
30437
30438
30439
30440
30441
30442
30443
30444
30445
30446
30447
30448
30449
30450
30451
30452
30453
30454
30455
30456
30457
30458
30459
30460
30461
30462
30463
30464
30465
30466
30467
30468
30469
30470
30471
30472
30473
30474
30475
30476
30477
30478
30479
30480
30481
30482
30483
30484
30485
30486
30487
30488
30489
30490
30491
30492
30493
30494
30495
30496
30497
30498
30499
30500
30501
30502
30503
30504
30505
30506
30507
30508
30509
30510
30511
30512
30513
30514
30515
30516
30517
30518
30519
30520
30521
30522
30523
30524
30525
30526
30527
30528
30529
30530
30531
30532
30533
30534
30535
30536
30537
30538
30539
30540
30541
30542
30543
30544
30545
30546
30547
30548
30549
30550
30551
30552
30553
30554
30555
30556
30557
30558
30559
30560
30561
30562
30563
30564
30565
30566
30567
30568
30569
30570
30571
30572
30573
30574
30575
30576
30577
30578
30579
30580
30581
30582
30583
30584
30585
30586
30587
30588
30589
30590
30591
30592
30593
30594
30595
30596
30597
30598
30599
30600
30601
30602
30603
30604
30605
30606
30607
30608
30609
30610
30611
30612
30613
30614
30615
30616
30617
30618
30619
30620
30621
30622
30623
30624
30625
30626
30627
30628
30629
30630
30631
30632
30633
30634
30635
30636
30637
30638
30639
30640
30641
30642
30643
30644
30645
30646
30647
30648
30649
30650
30651
30652
30653
30654
30655
30656
30657
30658
30659
30660
30661
30662
30663
30664
30665
30666
30667
30668
30669
30670
30671
30672
30673
30674
30675
30676
30677
30678
30679
30680
30681
30682
30683
30684
30685
30686
30687
30688
30689
30690
30691
30692
30693
30694
30695
30696
30697
30698
30699
30700
30701
30702
30703
30704
30705
30706
30707
30708
30709
30710
30711
30712
30713
30714
30715
30716
30717
30718
30719
30720
30721
30722
30723
30724
30725
30726
30727
30728
30729
30730
30731
30732
30733
30734
30735
30736
30737
30738
30739
30740
30741
30742
30743
30744
30745
30746
30747
30748
30749
30750
30751
30752
30753
30754
30755
30756
30757
30758
30759
30760
30761
30762
30763
30764
30765
30766
30767
30768
30769
30770
30771
30772
30773
30774
30775
30776
30777
30778
30779
30780
30781
30782
30783
30784
30785
30786
30787
30788
30789
30790
30791
30792
30793
30794
30795
30796
30797
30798
30799
30800
30801
30802
30803
30804
30805
30806
30807
30808
30809
30810
30811
30812
30813
30814
30815
30816
30817
30818
30819
30820
30821
30822
30823
30824
30825
30826
30827
30828
30829
30830
30831
30832
30833
30834
30835
30836
30837
30838
30839
30840
30841
30842
30843
30844
30845
30846
30847
30848
30849
30850
30851
30852
30853
30854
30855
30856
30857
30858
30859
30860
30861
30862
30863
30864
30865
30866
30867
30868
30869
30870
30871
30872
30873
30874
30875
30876
30877
30878
30879
30880
30881
30882
30883
30884
30885
30886
30887
30888
30889
30890
30891
30892
30893
30894
30895
30896
30897
30898
30899
30900
30901
30902
30903
30904
30905
30906
30907
30908
30909
30910
30911
30912
30913
30914
30915
30916
30917
30918
30919
30920
30921
30922
30923
30924
30925
30926
30927
30928
30929
30930
30931
30932
30933
30934
30935
30936
30937
30938
30939
30940
30941
30942
30943
30944
30945
30946
30947
30948
30949
30950
30951
30952
30953
30954
30955
30956
30957
30958
30959
30960
30961
30962
30963
30964
30965
30966
30967
30968
30969
30970
30971
30972
30973
30974
30975
30976
30977
30978
30979
30980
30981
30982
30983
30984
30985
30986
30987
30988
30989
30990
30991
30992
30993
30994
30995
30996
30997
30998
30999
31000
31001
31002
31003
31004
31005
31006
31007
31008
31009
31010
31011
31012
31013
31014
31015
31016
31017
31018
31019
31020
31021
31022
31023
31024
31025
31026
31027
31028
31029
31030
31031
31032
31033
31034
31035
31036
31037
31038
31039
31040
31041
31042
31043
31044
31045
31046
31047
31048
31049
31050
31051
31052
31053
31054
31055
31056
31057
31058
31059
31060
31061
31062
31063
31064
31065
31066
31067
31068
31069
31070
31071
31072
31073
31074
31075
31076
31077
31078
31079
31080
31081
31082
31083
31084
31085
31086
31087
31088
31089
31090
31091
31092
31093
31094
31095
31096
31097
31098
31099
31100
31101
31102
31103
31104
31105
31106
31107
31108
31109
31110
31111
31112
31113
31114
31115
31116
31117
31118
31119
31120
31121
31122
31123
31124
31125
31126
31127
31128
31129
31130
31131
31132
31133
31134
31135
31136
31137
31138
31139
31140
31141
31142
31143
31144
31145
31146
31147
31148
31149
31150
31151
31152
31153
31154
31155
31156
31157
31158
31159
31160
31161
31162
31163
31164
31165
31166
31167
31168
31169
31170
31171
31172
31173
31174
31175
31176
31177
31178
31179
31180
31181
31182
31183
31184
31185
31186
31187
31188
31189
31190
31191
31192
31193
31194
31195
31196
31197
31198
31199
31200
31201
31202
31203
31204
31205
31206
31207
31208
31209
31210
31211
31212
31213
31214
31215
31216
31217
31218
31219
31220
31221
31222
31223
31224
31225
31226
31227
31228
31229
31230
31231
31232
31233
31234
31235
31236
31237
31238
31239
31240
31241
31242
31243
31244
31245
31246
31247
31248
31249
31250
31251
31252
31253
31254
31255
31256
31257
31258
31259
31260
31261
31262
31263
31264
31265
31266
31267
31268
31269
31270
31271
31272
31273
31274
31275
31276
31277
31278
31279
31280
31281
31282
31283
31284
31285
31286
31287
31288
31289
31290
31291
31292
31293
31294
31295
31296
31297
31298
31299
31300
31301
31302
31303
31304
31305
31306
31307
31308
31309
31310
31311
31312
31313
31314
31315
31316
31317
31318
31319
31320
31321
31322
31323
31324
31325
31326
31327
31328
31329
31330
31331
31332
31333
31334
31335
31336
31337
31338
31339
31340
31341
31342
31343
31344
31345
31346
31347
31348
31349
31350
31351
31352
31353
31354
31355
31356
31357
31358
31359
31360
31361
31362
31363
31364
31365
31366
31367
31368
31369
31370
31371
31372
31373
31374
31375
31376
31377
31378
31379
31380
31381
31382
31383
31384
31385
31386
31387
31388
31389
31390
31391
31392
31393
31394
31395
31396
31397
31398
31399
31400
31401
31402
31403
31404
31405
31406
31407
31408
31409
31410
31411
31412
31413
31414
31415
31416
31417
31418
31419
31420
31421
31422
31423
31424
31425
31426
31427
31428
31429
31430
31431
31432
31433
31434
31435
31436
31437
31438
31439
31440
31441
31442
31443
31444
31445
31446
31447
31448
31449
31450
31451
31452
31453
31454
31455
31456
31457
31458
31459
31460
31461
31462
31463
31464
31465
31466
31467
31468
31469
31470
31471
31472
31473
31474
31475
31476
31477
31478
31479
31480
31481
31482
31483
31484
31485
31486
31487
31488
31489
31490
31491
31492
31493
31494
31495
31496
31497
31498
31499
31500
31501
31502
31503
31504
31505
31506
31507
31508
31509
31510
31511
31512
31513
31514
31515
31516
31517
31518
31519
31520
31521
31522
31523
31524
31525
31526
31527
31528
31529
31530
31531
31532
31533
31534
31535
31536
31537
31538
31539
31540
31541
31542
31543
31544
31545
31546
31547
31548
31549
31550
31551
31552
31553
31554
31555
31556
31557
31558
31559
31560
31561
31562
31563
31564
31565
31566
31567
31568
31569
31570
31571
31572
31573
31574
31575
31576
31577
31578
31579
31580
31581
31582
31583
31584
31585
31586
31587
31588
31589
31590
31591
31592
31593
31594
31595
31596
31597
31598
31599
31600
31601
31602
31603
31604
31605
31606
31607
31608
31609
31610
31611
31612
31613
31614
31615
31616
31617
31618
31619
31620
31621
31622
31623
31624
31625
31626
31627
31628
31629
31630
31631
31632
31633
31634
31635
31636
31637
31638
31639
31640
31641
31642
31643
31644
31645
31646
31647
31648
31649
31650
31651
31652
31653
31654
31655
31656
31657
31658
31659
31660
31661
31662
31663
31664
31665
31666
31667
31668
31669
31670
31671
31672
31673
31674
31675
31676
31677
31678
31679
31680
31681
31682
31683
31684
31685
31686
31687
31688
31689
31690
31691
31692
31693
31694
31695
31696
31697
31698
31699
31700
31701
31702
31703
31704
31705
31706
31707
31708
31709
31710
31711
31712
31713
31714
31715
31716
31717
31718
31719
31720
31721
31722
31723
31724
31725
31726
31727
31728
31729
31730
31731
31732
31733
31734
31735
31736
31737
31738
31739
31740
31741
31742
31743
31744
31745
31746
31747
31748
31749
31750
31751
31752
31753
31754
31755
31756
31757
31758
31759
31760
31761
31762
31763
31764
31765
31766
31767
31768
31769
31770
31771
31772
31773
31774
31775
31776
31777
31778
31779
31780
31781
31782
31783
31784
31785
31786
31787
31788
31789
31790
31791
31792
31793
31794
31795
31796
31797
31798
31799
31800
31801
31802
31803
31804
31805
31806
31807
31808
31809
31810
31811
31812
31813
31814
31815
31816
31817
31818
31819
31820
31821
31822
31823
31824
31825
31826
31827
31828
31829
31830
31831
31832
31833
31834
31835
31836
31837
31838
31839
31840
31841
31842
31843
31844
31845
31846
31847
31848
31849
31850
31851
31852
31853
31854
31855
31856
31857
31858
31859
31860
31861
31862
31863
31864
31865
31866
31867
31868
31869
31870
31871
31872
31873
31874
31875
31876
31877
31878
31879
31880
31881
31882
31883
31884
31885
31886
31887
31888
31889
31890
31891
31892
31893
31894
31895
31896
31897
31898
31899
31900
31901
31902
31903
31904
31905
31906
31907
31908
31909
31910
31911
31912
31913
31914
31915
31916
31917
31918
31919
31920
31921
31922
31923
31924
31925
31926
31927
31928
31929
31930
31931
31932
31933
31934
31935
31936
31937
31938
31939
31940
31941
31942
31943
31944
31945
31946
31947
31948
31949
31950
31951
31952
31953
31954
31955
31956
31957
31958
31959
31960
31961
31962
31963
31964
31965
31966
31967
31968
31969
31970
31971
31972
31973
31974
31975
31976
31977
31978
31979
31980
31981
31982
31983
31984
31985
31986
31987
31988
31989
31990
31991
31992
31993
31994
31995
31996
31997
31998
31999
32000
32001
32002
32003
32004
32005
32006
32007
32008
32009
32010
32011
32012
32013
32014
32015
32016
32017
32018
32019
32020
32021
32022
32023
32024
32025
32026
32027
32028
32029
32030
32031
32032
32033
32034
32035
32036
32037
32038
32039
32040
32041
32042
32043
32044
32045
32046
32047
32048
32049
32050
32051
32052
32053
32054
32055
32056
32057
32058
32059
32060
32061
32062
32063
32064
32065
32066
32067
32068
32069
32070
32071
32072
32073
32074
32075
32076
32077
32078
32079
32080
32081
32082
32083
32084
32085
32086
32087
32088
32089
32090
32091
32092
32093
32094
32095
32096
32097
32098
32099
32100
32101
32102
32103
32104
32105
32106
32107
32108
32109
32110
32111
32112
32113
32114
32115
32116
32117
32118
32119
32120
32121
32122
32123
32124
32125
32126
32127
32128
32129
32130
32131
32132
32133
32134
32135
32136
32137
32138
32139
32140
32141
32142
32143
32144
32145
32146
32147
32148
32149
32150
32151
32152
32153
32154
32155
32156
32157
32158
32159
32160
32161
32162
32163
| | /* Display generation from window structure and buffer text.
Copyright (C) 1985-1988, 1993-1995, 1997-2016 Free Software Foundation,
Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* New redisplay written by Gerd Moellmann <gerd@gnu.org>.
Redisplay.
Emacs separates the task of updating the display from code
modifying global state, e.g. buffer text. This way functions
operating on buffers don't also have to be concerned with updating
the display.
Updating the display is triggered by the Lisp interpreter when it
decides it's time to do it. This is done either automatically for
you as part of the interpreter's command loop or as the result of
calling Lisp functions like `sit-for'. The C function `redisplay'
in xdisp.c is the only entry into the inner redisplay code.
The following diagram shows how redisplay code is invoked. As you
can see, Lisp calls redisplay and vice versa. Under window systems
like X, some portions of the redisplay code are also called
asynchronously during mouse movement or expose events. It is very
important that these code parts do NOT use the C library (malloc,
free) because many C libraries under Unix are not reentrant. They
may also NOT call functions of the Lisp interpreter which could
change the interpreter's state. If you don't follow these rules,
you will encounter bugs which are very hard to explain.
+--------------+ redisplay +----------------+
| Lisp machine |---------------->| Redisplay code |<--+
+--------------+ (xdisp.c) +----------------+ |
^ | |
+----------------------------------+ |
Don't use this path when called |
asynchronously! |
|
expose_window (asynchronous) |
|
X expose events -----+
What does redisplay do? Obviously, it has to figure out somehow what
has been changed since the last time the display has been updated,
and to make these changes visible. Preferably it would do that in
a moderately intelligent way, i.e. fast.
Changes in buffer text can be deduced from window and buffer
structures, and from some global variables like `beg_unchanged' and
`end_unchanged'. The contents of the display are additionally
recorded in a `glyph matrix', a two-dimensional matrix of glyph
structures. Each row in such a matrix corresponds to a line on the
display, and each glyph in a row corresponds to a column displaying
a character, an image, or what else. This matrix is called the
`current glyph matrix' or `current matrix' in redisplay
terminology.
For buffer parts that have been changed since the last update, a
second glyph matrix is constructed, the so called `desired glyph
matrix' or short `desired matrix'. Current and desired matrix are
then compared to find a cheap way to update the display, e.g. by
reusing part of the display by scrolling lines.
You will find a lot of redisplay optimizations when you start
looking at the innards of redisplay. The overall goal of all these
optimizations is to make redisplay fast because it is done
frequently. Some of these optimizations are implemented by the
following functions:
. try_cursor_movement
This function tries to update the display if the text in the
window did not change and did not scroll, only point moved, and
it did not move off the displayed portion of the text.
. try_window_reusing_current_matrix
This function reuses the current matrix of a window when text
has not changed, but the window start changed (e.g., due to
scrolling).
. try_window_id
This function attempts to redisplay a window by reusing parts of
its existing display. It finds and reuses the part that was not
changed, and redraws the rest. (The "id" part in the function's
name stands for "insert/delete", not for "identification" or
somesuch.)
. try_window
This function performs the full redisplay of a single window
assuming that its fonts were not changed and that the cursor
will not end up in the scroll margins. (Loading fonts requires
re-adjustment of dimensions of glyph matrices, which makes this
method impossible to use.)
These optimizations are tried in sequence (some can be skipped if
it is known that they are not applicable). If none of the
optimizations were successful, redisplay calls redisplay_windows,
which performs a full redisplay of all windows.
Note that there's one more important optimization up Emacs's
sleeve, but it is related to actually redrawing the potentially
changed portions of the window/frame, not to reproducing the
desired matrices of those potentially changed portions. Namely,
the function update_frame and its subroutines, which you will find
in dispnew.c, compare the desired matrices with the current
matrices, and only redraw the portions that changed. So it could
happen that the functions in this file for some reason decide that
the entire desired matrix needs to be regenerated from scratch, and
still only parts of the Emacs display, or even nothing at all, will
be actually delivered to the glass, because update_frame has found
that the new and the old screen contents are similar or identical.
Desired matrices.
Desired matrices are always built per Emacs window. The function
`display_line' is the central function to look at if you are
interested. It constructs one row in a desired matrix given an
iterator structure containing both a buffer position and a
description of the environment in which the text is to be
displayed. But this is too early, read on.
Characters and pixmaps displayed for a range of buffer text depend
on various settings of buffers and windows, on overlays and text
properties, on display tables, on selective display. The good news
is that all this hairy stuff is hidden behind a small set of
interface functions taking an iterator structure (struct it)
argument.
Iteration over things to be displayed is then simple. It is
started by initializing an iterator with a call to init_iterator,
passing it the buffer position where to start iteration. For
iteration over strings, pass -1 as the position to init_iterator,
and call reseat_to_string when the string is ready, to initialize
the iterator for that string. Thereafter, calls to
get_next_display_element fill the iterator structure with relevant
information about the next thing to display. Calls to
set_iterator_to_next move the iterator to the next thing.
Besides this, an iterator also contains information about the
display environment in which glyphs for display elements are to be
produced. It has fields for the width and height of the display,
the information whether long lines are truncated or continued, a
current X and Y position, and lots of other stuff you can better
see in dispextern.h.
Glyphs in a desired matrix are normally constructed in a loop
calling get_next_display_element and then PRODUCE_GLYPHS. The call
to PRODUCE_GLYPHS will fill the iterator structure with pixel
information about the element being displayed and at the same time
produce glyphs for it. If the display element fits on the line
being displayed, set_iterator_to_next is called next, otherwise the
glyphs produced are discarded. The function display_line is the
workhorse of filling glyph rows in the desired matrix with glyphs.
In addition to producing glyphs, it also handles line truncation
and continuation, word wrap, and cursor positioning (for the
latter, see also set_cursor_from_row).
Frame matrices.
That just couldn't be all, could it? What about terminal types not
supporting operations on sub-windows of the screen? To update the
display on such a terminal, window-based glyph matrices are not
well suited. To be able to reuse part of the display (scrolling
lines up and down), we must instead have a view of the whole
screen. This is what `frame matrices' are for. They are a trick.
Frames on terminals like above have a glyph pool. Windows on such
a frame sub-allocate their glyph memory from their frame's glyph
pool. The frame itself is given its own glyph matrices. By
coincidence---or maybe something else---rows in window glyph
matrices are slices of corresponding rows in frame matrices. Thus
writing to window matrices implicitly updates a frame matrix which
provides us with the view of the whole screen that we originally
wanted to have without having to move many bytes around. To be
honest, there is a little bit more done, but not much more. If you
plan to extend that code, take a look at dispnew.c. The function
build_frame_matrix is a good starting point.
Bidirectional display.
Bidirectional display adds quite some hair to this already complex
design. The good news are that a large portion of that hairy stuff
is hidden in bidi.c behind only 3 interfaces. bidi.c implements a
reordering engine which is called by set_iterator_to_next and
returns the next character to display in the visual order. See
commentary on bidi.c for more details. As far as redisplay is
concerned, the effect of calling bidi_move_to_visually_next, the
main interface of the reordering engine, is that the iterator gets
magically placed on the buffer or string position that is to be
displayed next. In other words, a linear iteration through the
buffer/string is replaced with a non-linear one. All the rest of
the redisplay is oblivious to the bidi reordering.
Well, almost oblivious---there are still complications, most of
them due to the fact that buffer and string positions no longer
change monotonously with glyph indices in a glyph row. Moreover,
for continued lines, the buffer positions may not even be
monotonously changing with vertical positions. Also, accounting
for face changes, overlays, etc. becomes more complex because
non-linear iteration could potentially skip many positions with
changes, and then cross them again on the way back...
One other prominent effect of bidirectional display is that some
paragraphs of text need to be displayed starting at the right
margin of the window---the so-called right-to-left, or R2L
paragraphs. R2L paragraphs are displayed with R2L glyph rows,
which have their reversed_p flag set. The bidi reordering engine
produces characters in such rows starting from the character which
should be the rightmost on display. PRODUCE_GLYPHS then reverses
the order, when it fills up the glyph row whose reversed_p flag is
set, by prepending each new glyph to what is already there, instead
of appending it. When the glyph row is complete, the function
extend_face_to_end_of_line fills the empty space to the left of the
leftmost character with special glyphs, which will display as,
well, empty. On text terminals, these special glyphs are simply
blank characters. On graphics terminals, there's a single stretch
glyph of a suitably computed width. Both the blanks and the
stretch glyph are given the face of the background of the line.
This way, the terminal-specific back-end can still draw the glyphs
left to right, even for R2L lines.
Bidirectional display and character compositions
Some scripts cannot be displayed by drawing each character
individually, because adjacent characters change each other's shape
on display. For example, Arabic and Indic scripts belong to this
category.
Emacs display supports this by providing "character compositions",
most of which is implemented in composite.c. During the buffer
scan that delivers characters to PRODUCE_GLYPHS, if the next
character to be delivered is a composed character, the iteration
calls composition_reseat_it and next_element_from_composition. If
they succeed to compose the character with one or more of the
following characters, the whole sequence of characters that where
composed is recorded in the `struct composition_it' object that is
part of the buffer iterator. The composed sequence could produce
one or more font glyphs (called "grapheme clusters") on the screen.
Each of these grapheme clusters is then delivered to PRODUCE_GLYPHS
in the direction corresponding to the current bidi scan direction
(recorded in the scan_dir member of the `struct bidi_it' object
that is part of the buffer iterator). In particular, if the bidi
iterator currently scans the buffer backwards, the grapheme
clusters are delivered back to front. This reorders the grapheme
clusters as appropriate for the current bidi context. Note that
this means that the grapheme clusters are always stored in the
LGSTRING object (see composite.c) in the logical order.
Moving an iterator in bidirectional text
without producing glyphs
Note one important detail mentioned above: that the bidi reordering
engine, driven by the iterator, produces characters in R2L rows
starting at the character that will be the rightmost on display.
As far as the iterator is concerned, the geometry of such rows is
still left to right, i.e. the iterator "thinks" the first character
is at the leftmost pixel position. The iterator does not know that
PRODUCE_GLYPHS reverses the order of the glyphs that the iterator
delivers. This is important when functions from the move_it_*
family are used to get to certain screen position or to match
screen coordinates with buffer coordinates: these functions use the
iterator geometry, which is left to right even in R2L paragraphs.
This works well with most callers of move_it_*, because they need
to get to a specific column, and columns are still numbered in the
reading order, i.e. the rightmost character in a R2L paragraph is
still column zero. But some callers do not get well with this; a
notable example is mouse clicks that need to find the character
that corresponds to certain pixel coordinates. See
buffer_posn_from_coords in dispnew.c for how this is handled. */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include "lisp.h"
#include "atimer.h"
#include "composite.h"
#include "keyboard.h"
#include "systime.h"
#include "frame.h"
#include "window.h"
#include "termchar.h"
#include "dispextern.h"
#include "character.h"
#include "buffer.h"
#include "charset.h"
#include "indent.h"
#include "commands.h"
#include "keymap.h"
#include "disptab.h"
#include "termhooks.h"
#include "termopts.h"
#include "intervals.h"
#include "coding.h"
#include "region-cache.h"
#include "font.h"
#include "fontset.h"
#include "blockinput.h"
#include "xwidget.h"
#ifdef HAVE_WINDOW_SYSTEM
#include TERM_HEADER
#endif /* HAVE_WINDOW_SYSTEM */
#ifndef FRAME_X_OUTPUT
#define FRAME_X_OUTPUT(f) ((f)->output_data.x)
#endif
#define INFINITY 10000000
/* Holds the list (error). */
static Lisp_Object list_of_error;
#ifdef HAVE_WINDOW_SYSTEM
/* Test if overflow newline into fringe. Called with iterator IT
at or past right window margin, and with IT->current_x set. */
#define IT_OVERFLOW_NEWLINE_INTO_FRINGE(IT) \
(!NILP (Voverflow_newline_into_fringe) \
&& FRAME_WINDOW_P ((IT)->f) \
&& ((IT)->bidi_it.paragraph_dir == R2L \
? (WINDOW_LEFT_FRINGE_WIDTH ((IT)->w) > 0) \
: (WINDOW_RIGHT_FRINGE_WIDTH ((IT)->w) > 0)) \
&& (IT)->current_x == (IT)->last_visible_x)
#else /* !HAVE_WINDOW_SYSTEM */
#define IT_OVERFLOW_NEWLINE_INTO_FRINGE(it) false
#endif /* HAVE_WINDOW_SYSTEM */
/* Test if the display element loaded in IT, or the underlying buffer
or string character, is a space or a TAB character. This is used
to determine where word wrapping can occur. */
#define IT_DISPLAYING_WHITESPACE(it) \
((it->what == IT_CHARACTER && (it->c == ' ' || it->c == '\t')) \
|| ((STRINGP (it->string) \
&& (SREF (it->string, IT_STRING_BYTEPOS (*it)) == ' ' \
|| SREF (it->string, IT_STRING_BYTEPOS (*it)) == '\t')) \
|| (it->s \
&& (it->s[IT_BYTEPOS (*it)] == ' ' \
|| it->s[IT_BYTEPOS (*it)] == '\t')) \
|| (IT_BYTEPOS (*it) < ZV_BYTE \
&& (*BYTE_POS_ADDR (IT_BYTEPOS (*it)) == ' ' \
|| *BYTE_POS_ADDR (IT_BYTEPOS (*it)) == '\t')))) \
/* True means print newline to stdout before next mini-buffer message. */
bool noninteractive_need_newline;
/* True means print newline to message log before next message. */
static bool message_log_need_newline;
/* Three markers that message_dolog uses.
It could allocate them itself, but that causes trouble
in handling memory-full errors. */
static Lisp_Object message_dolog_marker1;
static Lisp_Object message_dolog_marker2;
static Lisp_Object message_dolog_marker3;
\f
/* The buffer position of the first character appearing entirely or
partially on the line of the selected window which contains the
cursor; <= 0 if not known. Set by set_cursor_from_row, used for
redisplay optimization in redisplay_internal. */
static struct text_pos this_line_start_pos;
/* Number of characters past the end of the line above, including the
terminating newline. */
static struct text_pos this_line_end_pos;
/* The vertical positions and the height of this line. */
static int this_line_vpos;
static int this_line_y;
static int this_line_pixel_height;
/* X position at which this display line starts. Usually zero;
negative if first character is partially visible. */
static int this_line_start_x;
/* The smallest character position seen by move_it_* functions as they
move across display lines. Used to set MATRIX_ROW_START_CHARPOS of
hscrolled lines, see display_line. */
static struct text_pos this_line_min_pos;
/* Buffer that this_line_.* variables are referring to. */
static struct buffer *this_line_buffer;
/* True if an overlay arrow has been displayed in this window. */
static bool overlay_arrow_seen;
/* Vector containing glyphs for an ellipsis `...'. */
static Lisp_Object default_invis_vector[3];
/* This is the window where the echo area message was displayed. It
is always a mini-buffer window, but it may not be the same window
currently active as a mini-buffer. */
Lisp_Object echo_area_window;
/* List of pairs (MESSAGE . MULTIBYTE). The function save_message
pushes the current message and the value of
message_enable_multibyte on the stack, the function restore_message
pops the stack and displays MESSAGE again. */
static Lisp_Object Vmessage_stack;
/* True means multibyte characters were enabled when the echo area
message was specified. */
static bool message_enable_multibyte;
/* At each redisplay cycle, we should refresh everything there is to refresh.
To do that efficiently, we use many optimizations that try to make sure we
don't waste too much time updating things that haven't changed.
The coarsest such optimization is that, in the most common cases, we only
look at the selected-window.
To know whether other windows should be considered for redisplay, we use the
variable windows_or_buffers_changed: as long as it is 0, it means that we
have not noticed anything that should require updating anything else than
the selected-window. If it is set to REDISPLAY_SOME, it means that since
last redisplay, some changes have been made which could impact other
windows. To know which ones need redisplay, every buffer, window, and frame
has a `redisplay' bit, which (if true) means that this object needs to be
redisplayed. If windows_or_buffers_changed is 0, we know there's no point
looking for those `redisplay' bits (actually, there might be some such bits
set, but then only on objects which aren't displayed anyway).
OTOH if it's non-zero we wil have to loop through all windows and then check
the `redisplay' bit of the corresponding window, frame, and buffer, in order
to decide whether that window needs attention or not. Note that we can't
just look at the frame's redisplay bit to decide that the whole frame can be
skipped, since even if the frame's redisplay bit is unset, some of its
windows's redisplay bits may be set.
Mostly for historical reasons, windows_or_buffers_changed can also take
other non-zero values. In that case, the precise value doesn't matter (it
encodes the cause of the setting but is only used for debugging purposes),
and what it means is that we shouldn't pay attention to any `redisplay' bits
and we should simply try and redisplay every window out there. */
int windows_or_buffers_changed;
/* Nonzero if we should redraw the mode lines on the next redisplay.
Similarly to `windows_or_buffers_changed', If it has value REDISPLAY_SOME,
then only redisplay the mode lines in those buffers/windows/frames where the
`redisplay' bit has been set.
For any other value, redisplay all mode lines (the number used is then only
used to track down the cause for this full-redisplay).
Since the frame title uses the same %-constructs as the mode line
(except %c and %l), if this variable is non-zero, we also consider
redisplaying the title of each frame, see x_consider_frame_title.
The `redisplay' bits are the same as those used for
windows_or_buffers_changed, and setting windows_or_buffers_changed also
causes recomputation of the mode lines of all those windows. IOW this
variable only has an effect if windows_or_buffers_changed is zero, in which
case we should only need to redisplay the mode-line of those objects with
a `redisplay' bit set but not the window's text content (tho we may still
need to refresh the text content of the selected-window). */
int update_mode_lines;
/* True after display_mode_line if %l was used and it displayed a
line number. */
static bool line_number_displayed;
/* The name of the *Messages* buffer, a string. */
static Lisp_Object Vmessages_buffer_name;
/* Current, index 0, and last displayed echo area message. Either
buffers from echo_buffers, or nil to indicate no message. */
Lisp_Object echo_area_buffer[2];
/* The buffers referenced from echo_area_buffer. */
static Lisp_Object echo_buffer[2];
/* A vector saved used in with_area_buffer to reduce consing. */
static Lisp_Object Vwith_echo_area_save_vector;
/* True means display_echo_area should display the last echo area
message again. Set by redisplay_preserve_echo_area. */
static bool display_last_displayed_message_p;
/* True if echo area is being used by print; false if being used by
message. */
static bool message_buf_print;
/* Set to true in clear_message to make redisplay_internal aware
of an emptied echo area. */
static bool message_cleared_p;
/* A scratch glyph row with contents used for generating truncation
glyphs. Also used in direct_output_for_insert. */
#define MAX_SCRATCH_GLYPHS 100
static struct glyph_row scratch_glyph_row;
static struct glyph scratch_glyphs[MAX_SCRATCH_GLYPHS];
/* Ascent and height of the last line processed by move_it_to. */
static int last_height;
/* True if there's a help-echo in the echo area. */
bool help_echo_showing_p;
/* The maximum distance to look ahead for text properties. Values
that are too small let us call compute_char_face and similar
functions too often which is expensive. Values that are too large
let us call compute_char_face and alike too often because we
might not be interested in text properties that far away. */
#define TEXT_PROP_DISTANCE_LIMIT 100
/* SAVE_IT and RESTORE_IT are called when we save a snapshot of the
iterator state and later restore it. This is needed because the
bidi iterator on bidi.c keeps a stacked cache of its states, which
is really a singleton. When we use scratch iterator objects to
move around the buffer, we can cause the bidi cache to be pushed or
popped, and therefore we need to restore the cache state when we
return to the original iterator. */
#define SAVE_IT(ITCOPY, ITORIG, CACHE) \
do { \
if (CACHE) \
bidi_unshelve_cache (CACHE, true); \
ITCOPY = ITORIG; \
CACHE = bidi_shelve_cache (); \
} while (false)
#define RESTORE_IT(pITORIG, pITCOPY, CACHE) \
do { \
if (pITORIG != pITCOPY) \
*(pITORIG) = *(pITCOPY); \
bidi_unshelve_cache (CACHE, false); \
CACHE = NULL; \
} while (false)
/* Functions to mark elements as needing redisplay. */
enum { REDISPLAY_SOME = 2}; /* Arbitrary choice. */
void
redisplay_other_windows (void)
{
if (!windows_or_buffers_changed)
windows_or_buffers_changed = REDISPLAY_SOME;
}
void
wset_redisplay (struct window *w)
{
/* Beware: selected_window can be nil during early stages. */
if (!EQ (make_lisp_ptr (w, Lisp_Vectorlike), selected_window))
redisplay_other_windows ();
w->redisplay = true;
}
void
fset_redisplay (struct frame *f)
{
redisplay_other_windows ();
f->redisplay = true;
}
void
bset_redisplay (struct buffer *b)
{
int count = buffer_window_count (b);
if (count > 0)
{
/* ... it's visible in other window than selected, */
if (count > 1 || b != XBUFFER (XWINDOW (selected_window)->contents))
redisplay_other_windows ();
/* Even if we don't set windows_or_buffers_changed, do set `redisplay'
so that if we later set windows_or_buffers_changed, this buffer will
not be omitted. */
b->text->redisplay = true;
}
}
void
bset_update_mode_line (struct buffer *b)
{
if (!update_mode_lines)
update_mode_lines = REDISPLAY_SOME;
b->text->redisplay = true;
}
DEFUN ("set-buffer-redisplay", Fset_buffer_redisplay,
Sset_buffer_redisplay, 4, 4, 0,
doc: /* Mark the current buffer for redisplay.
This function may be passed to `add-variable-watcher'. */)
(Lisp_Object symbol, Lisp_Object newval, Lisp_Object op, Lisp_Object where)
{
bset_update_mode_line (current_buffer);
current_buffer->prevent_redisplay_optimizations_p = true;
return Qnil;
}
#ifdef GLYPH_DEBUG
/* True means print traces of redisplay if compiled with
GLYPH_DEBUG defined. */
bool trace_redisplay_p;
#endif /* GLYPH_DEBUG */
#ifdef DEBUG_TRACE_MOVE
/* True means trace with TRACE_MOVE to stderr. */
static bool trace_move;
#define TRACE_MOVE(x) if (trace_move) fprintf x; else (void) 0
#else
#define TRACE_MOVE(x) (void) 0
#endif
/* Buffer being redisplayed -- for redisplay_window_error. */
static struct buffer *displayed_buffer;
/* Value returned from text property handlers (see below). */
enum prop_handled
{
HANDLED_NORMALLY,
HANDLED_RECOMPUTE_PROPS,
HANDLED_OVERLAY_STRING_CONSUMED,
HANDLED_RETURN
};
/* A description of text properties that redisplay is interested
in. */
struct props
{
/* The symbol index of the name of the property. */
short name;
/* A unique index for the property. */
enum prop_idx idx;
/* A handler function called to set up iterator IT from the property
at IT's current position. Value is used to steer handle_stop. */
enum prop_handled (*handler) (struct it *it);
};
static enum prop_handled handle_face_prop (struct it *);
static enum prop_handled handle_invisible_prop (struct it *);
static enum prop_handled handle_display_prop (struct it *);
static enum prop_handled handle_composition_prop (struct it *);
static enum prop_handled handle_overlay_change (struct it *);
static enum prop_handled handle_fontified_prop (struct it *);
/* Properties handled by iterators. */
static struct props it_props[] =
{
{SYMBOL_INDEX (Qfontified), FONTIFIED_PROP_IDX, handle_fontified_prop},
/* Handle `face' before `display' because some sub-properties of
`display' need to know the face. */
{SYMBOL_INDEX (Qface), FACE_PROP_IDX, handle_face_prop},
{SYMBOL_INDEX (Qdisplay), DISPLAY_PROP_IDX, handle_display_prop},
{SYMBOL_INDEX (Qinvisible), INVISIBLE_PROP_IDX, handle_invisible_prop},
{SYMBOL_INDEX (Qcomposition), COMPOSITION_PROP_IDX, handle_composition_prop},
{0, 0, NULL}
};
/* Value is the position described by X. If X is a marker, value is
the marker_position of X. Otherwise, value is X. */
#define COERCE_MARKER(X) (MARKERP ((X)) ? Fmarker_position (X) : (X))
/* Enumeration returned by some move_it_.* functions internally. */
enum move_it_result
{
/* Not used. Undefined value. */
MOVE_UNDEFINED,
/* Move ended at the requested buffer position or ZV. */
MOVE_POS_MATCH_OR_ZV,
/* Move ended at the requested X pixel position. */
MOVE_X_REACHED,
/* Move within a line ended at the end of a line that must be
continued. */
MOVE_LINE_CONTINUED,
/* Move within a line ended at the end of a line that would
be displayed truncated. */
MOVE_LINE_TRUNCATED,
/* Move within a line ended at a line end. */
MOVE_NEWLINE_OR_CR
};
/* This counter is used to clear the face cache every once in a while
in redisplay_internal. It is incremented for each redisplay.
Every CLEAR_FACE_CACHE_COUNT full redisplays, the face cache is
cleared. */
#define CLEAR_FACE_CACHE_COUNT 500
static int clear_face_cache_count;
/* Similarly for the image cache. */
#ifdef HAVE_WINDOW_SYSTEM
#define CLEAR_IMAGE_CACHE_COUNT 101
static int clear_image_cache_count;
/* Null glyph slice */
static struct glyph_slice null_glyph_slice = { 0, 0, 0, 0 };
#endif
/* True while redisplay_internal is in progress. */
bool redisplaying_p;
/* If a string, XTread_socket generates an event to display that string.
(The display is done in read_char.) */
Lisp_Object help_echo_string;
Lisp_Object help_echo_window;
Lisp_Object help_echo_object;
ptrdiff_t help_echo_pos;
/* Temporary variable for XTread_socket. */
Lisp_Object previous_help_echo_string;
/* Platform-independent portion of hourglass implementation. */
#ifdef HAVE_WINDOW_SYSTEM
/* True means an hourglass cursor is currently shown. */
static bool hourglass_shown_p;
/* If non-null, an asynchronous timer that, when it expires, displays
an hourglass cursor on all frames. */
static struct atimer *hourglass_atimer;
#endif /* HAVE_WINDOW_SYSTEM */
/* Default number of seconds to wait before displaying an hourglass
cursor. */
#define DEFAULT_HOURGLASS_DELAY 1
#ifdef HAVE_WINDOW_SYSTEM
/* Default pixel width of `thin-space' display method. */
#define THIN_SPACE_WIDTH 1
#endif /* HAVE_WINDOW_SYSTEM */
/* Function prototypes. */
static void setup_for_ellipsis (struct it *, int);
static void set_iterator_to_next (struct it *, bool);
static void mark_window_display_accurate_1 (struct window *, bool);
static bool row_for_charpos_p (struct glyph_row *, ptrdiff_t);
static bool cursor_row_p (struct glyph_row *);
static int redisplay_mode_lines (Lisp_Object, bool);
static void handle_line_prefix (struct it *);
static void handle_stop_backwards (struct it *, ptrdiff_t);
static void unwind_with_echo_area_buffer (Lisp_Object);
static Lisp_Object with_echo_area_buffer_unwind_data (struct window *);
static bool current_message_1 (ptrdiff_t, Lisp_Object);
static bool truncate_message_1 (ptrdiff_t, Lisp_Object);
static void set_message (Lisp_Object);
static bool set_message_1 (ptrdiff_t, Lisp_Object);
static bool display_echo_area_1 (ptrdiff_t, Lisp_Object);
static bool resize_mini_window_1 (ptrdiff_t, Lisp_Object);
static void unwind_redisplay (void);
static void extend_face_to_end_of_line (struct it *);
static intmax_t message_log_check_duplicate (ptrdiff_t, ptrdiff_t);
static void push_it (struct it *, struct text_pos *);
static void iterate_out_of_display_property (struct it *);
static void pop_it (struct it *);
static void redisplay_internal (void);
static void echo_area_display (bool);
static void block_buffer_flips (void);
static void unblock_buffer_flips (void);
static void redisplay_windows (Lisp_Object);
static void redisplay_window (Lisp_Object, bool);
static Lisp_Object redisplay_window_error (Lisp_Object);
static Lisp_Object redisplay_window_0 (Lisp_Object);
static Lisp_Object redisplay_window_1 (Lisp_Object);
static bool set_cursor_from_row (struct window *, struct glyph_row *,
struct glyph_matrix *, ptrdiff_t, ptrdiff_t,
int, int);
static bool cursor_row_fully_visible_p (struct window *, bool, bool);
static bool update_menu_bar (struct frame *, bool, bool);
static bool try_window_reusing_current_matrix (struct window *);
static int try_window_id (struct window *);
static bool display_line (struct it *);
static int display_mode_lines (struct window *);
static int display_mode_line (struct window *, enum face_id, Lisp_Object);
static int display_mode_element (struct it *, int, int, int, Lisp_Object,
Lisp_Object, bool);
static int store_mode_line_string (const char *, Lisp_Object, bool, int, int,
Lisp_Object);
static const char *decode_mode_spec (struct window *, int, int, Lisp_Object *);
static void display_menu_bar (struct window *);
static ptrdiff_t display_count_lines (ptrdiff_t, ptrdiff_t, ptrdiff_t,
ptrdiff_t *);
static int display_string (const char *, Lisp_Object, Lisp_Object,
ptrdiff_t, ptrdiff_t, struct it *, int, int, int, int);
static void compute_line_metrics (struct it *);
static void run_redisplay_end_trigger_hook (struct it *);
static bool get_overlay_strings (struct it *, ptrdiff_t);
static bool get_overlay_strings_1 (struct it *, ptrdiff_t, bool);
static void next_overlay_string (struct it *);
static void reseat (struct it *, struct text_pos, bool);
static void reseat_1 (struct it *, struct text_pos, bool);
static bool next_element_from_display_vector (struct it *);
static bool next_element_from_string (struct it *);
static bool next_element_from_c_string (struct it *);
static bool next_element_from_buffer (struct it *);
static bool next_element_from_composition (struct it *);
static bool next_element_from_image (struct it *);
static bool next_element_from_stretch (struct it *);
static bool next_element_from_xwidget (struct it *);
static void load_overlay_strings (struct it *, ptrdiff_t);
static bool get_next_display_element (struct it *);
static enum move_it_result
move_it_in_display_line_to (struct it *, ptrdiff_t, int,
enum move_operation_enum);
static void get_visually_first_element (struct it *);
static void compute_stop_pos (struct it *);
static int face_before_or_after_it_pos (struct it *, bool);
static ptrdiff_t next_overlay_change (ptrdiff_t);
static int handle_display_spec (struct it *, Lisp_Object, Lisp_Object,
Lisp_Object, struct text_pos *, ptrdiff_t, bool);
static int handle_single_display_spec (struct it *, Lisp_Object,
Lisp_Object, Lisp_Object,
struct text_pos *, ptrdiff_t, int, bool);
static int underlying_face_id (struct it *);
#define face_before_it_pos(IT) face_before_or_after_it_pos (IT, true)
#define face_after_it_pos(IT) face_before_or_after_it_pos (IT, false)
#ifdef HAVE_WINDOW_SYSTEM
static void update_tool_bar (struct frame *, bool);
static void x_draw_bottom_divider (struct window *w);
static void notice_overwritten_cursor (struct window *,
enum glyph_row_area,
int, int, int, int);
static int normal_char_height (struct font *, int);
static void normal_char_ascent_descent (struct font *, int, int *, int *);
static void append_stretch_glyph (struct it *, Lisp_Object,
int, int, int);
static Lisp_Object get_it_property (struct it *, Lisp_Object);
static Lisp_Object calc_line_height_property (struct it *, Lisp_Object,
struct font *, int, bool);
#endif /* HAVE_WINDOW_SYSTEM */
static void produce_special_glyphs (struct it *, enum display_element_type);
static void show_mouse_face (Mouse_HLInfo *, enum draw_glyphs_face);
static bool coords_in_mouse_face_p (struct window *, int, int);
\f
/***********************************************************************
Window display dimensions
***********************************************************************/
/* Return the bottom boundary y-position for text lines in window W.
This is the first y position at which a line cannot start.
It is relative to the top of the window.
This is the height of W minus the height of a mode line, if any. */
int
window_text_bottom_y (struct window *w)
{
int height = WINDOW_PIXEL_HEIGHT (w);
height -= WINDOW_BOTTOM_DIVIDER_WIDTH (w);
if (WINDOW_WANTS_MODELINE_P (w))
height -= CURRENT_MODE_LINE_HEIGHT (w);
height -= WINDOW_SCROLL_BAR_AREA_HEIGHT (w);
return height;
}
/* Return the pixel width of display area AREA of window W.
ANY_AREA means return the total width of W, not including
fringes to the left and right of the window. */
int
window_box_width (struct window *w, enum glyph_row_area area)
{
int width = w->pixel_width;
if (!w->pseudo_window_p)
{
width -= WINDOW_SCROLL_BAR_AREA_WIDTH (w);
width -= WINDOW_RIGHT_DIVIDER_WIDTH (w);
if (area == TEXT_AREA)
width -= (WINDOW_MARGINS_WIDTH (w)
+ WINDOW_FRINGES_WIDTH (w));
else if (area == LEFT_MARGIN_AREA)
width = WINDOW_LEFT_MARGIN_WIDTH (w);
else if (area == RIGHT_MARGIN_AREA)
width = WINDOW_RIGHT_MARGIN_WIDTH (w);
}
/* With wide margins, fringes, etc. we might end up with a negative
width, correct that here. */
return max (0, width);
}
/* Return the pixel height of the display area of window W, not
including mode lines of W, if any. */
int
window_box_height (struct window *w)
{
struct frame *f = XFRAME (w->frame);
int height = WINDOW_PIXEL_HEIGHT (w);
eassert (height >= 0);
height -= WINDOW_BOTTOM_DIVIDER_WIDTH (w);
height -= WINDOW_SCROLL_BAR_AREA_HEIGHT (w);
/* Note: the code below that determines the mode-line/header-line
height is essentially the same as that contained in the macro
CURRENT_{MODE,HEADER}_LINE_HEIGHT, except that it checks whether
the appropriate glyph row has its `mode_line_p' flag set,
and if it doesn't, uses estimate_mode_line_height instead. */
if (WINDOW_WANTS_MODELINE_P (w))
{
struct glyph_row *ml_row
= (w->current_matrix && w->current_matrix->rows
? MATRIX_MODE_LINE_ROW (w->current_matrix)
: 0);
if (ml_row && ml_row->mode_line_p)
height -= ml_row->height;
else
height -= estimate_mode_line_height (f, CURRENT_MODE_LINE_FACE_ID (w));
}
if (WINDOW_WANTS_HEADER_LINE_P (w))
{
struct glyph_row *hl_row
= (w->current_matrix && w->current_matrix->rows
? MATRIX_HEADER_LINE_ROW (w->current_matrix)
: 0);
if (hl_row && hl_row->mode_line_p)
height -= hl_row->height;
else
height -= estimate_mode_line_height (f, HEADER_LINE_FACE_ID);
}
/* With a very small font and a mode-line that's taller than
default, we might end up with a negative height. */
return max (0, height);
}
/* Return the window-relative coordinate of the left edge of display
area AREA of window W. ANY_AREA means return the left edge of the
whole window, to the right of the left fringe of W. */
int
window_box_left_offset (struct window *w, enum glyph_row_area area)
{
int x;
if (w->pseudo_window_p)
return 0;
x = WINDOW_LEFT_SCROLL_BAR_AREA_WIDTH (w);
if (area == TEXT_AREA)
x += (WINDOW_LEFT_FRINGE_WIDTH (w)
+ window_box_width (w, LEFT_MARGIN_AREA));
else if (area == RIGHT_MARGIN_AREA)
x += (WINDOW_LEFT_FRINGE_WIDTH (w)
+ window_box_width (w, LEFT_MARGIN_AREA)
+ window_box_width (w, TEXT_AREA)
+ (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? 0
: WINDOW_RIGHT_FRINGE_WIDTH (w)));
else if (area == LEFT_MARGIN_AREA
&& WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w))
x += WINDOW_LEFT_FRINGE_WIDTH (w);
/* Don't return more than the window's pixel width. */
return min (x, w->pixel_width);
}
/* Return the window-relative coordinate of the right edge of display
area AREA of window W. ANY_AREA means return the right edge of the
whole window, to the left of the right fringe of W. */
static int
window_box_right_offset (struct window *w, enum glyph_row_area area)
{
/* Don't return more than the window's pixel width. */
return min (window_box_left_offset (w, area) + window_box_width (w, area),
w->pixel_width);
}
/* Return the frame-relative coordinate of the left edge of display
area AREA of window W. ANY_AREA means return the left edge of the
whole window, to the right of the left fringe of W. */
int
window_box_left (struct window *w, enum glyph_row_area area)
{
struct frame *f = XFRAME (w->frame);
int x;
if (w->pseudo_window_p)
return FRAME_INTERNAL_BORDER_WIDTH (f);
x = (WINDOW_LEFT_EDGE_X (w)
+ window_box_left_offset (w, area));
return x;
}
/* Return the frame-relative coordinate of the right edge of display
area AREA of window W. ANY_AREA means return the right edge of the
whole window, to the left of the right fringe of W. */
int
window_box_right (struct window *w, enum glyph_row_area area)
{
return window_box_left (w, area) + window_box_width (w, area);
}
/* Get the bounding box of the display area AREA of window W, without
mode lines, in frame-relative coordinates. ANY_AREA means the
whole window, not including the left and right fringes of
the window. Return in *BOX_X and *BOX_Y the frame-relative pixel
coordinates of the upper-left corner of the box. Return in
*BOX_WIDTH, and *BOX_HEIGHT the pixel width and height of the box. */
void
window_box (struct window *w, enum glyph_row_area area, int *box_x,
int *box_y, int *box_width, int *box_height)
{
if (box_width)
*box_width = window_box_width (w, area);
if (box_height)
*box_height = window_box_height (w);
if (box_x)
*box_x = window_box_left (w, area);
if (box_y)
{
*box_y = WINDOW_TOP_EDGE_Y (w);
if (WINDOW_WANTS_HEADER_LINE_P (w))
*box_y += CURRENT_HEADER_LINE_HEIGHT (w);
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* Get the bounding box of the display area AREA of window W, without
mode lines and both fringes of the window. Return in *TOP_LEFT_X
and TOP_LEFT_Y the frame-relative pixel coordinates of the
upper-left corner of the box. Return in *BOTTOM_RIGHT_X, and
*BOTTOM_RIGHT_Y the coordinates of the bottom-right corner of the
box. */
static void
window_box_edges (struct window *w, int *top_left_x, int *top_left_y,
int *bottom_right_x, int *bottom_right_y)
{
window_box (w, ANY_AREA, top_left_x, top_left_y,
bottom_right_x, bottom_right_y);
*bottom_right_x += *top_left_x;
*bottom_right_y += *top_left_y;
}
#endif /* HAVE_WINDOW_SYSTEM */
/***********************************************************************
Utilities
***********************************************************************/
/* Return the bottom y-position of the line the iterator IT is in.
This can modify IT's settings. */
int
line_bottom_y (struct it *it)
{
int line_height = it->max_ascent + it->max_descent;
int line_top_y = it->current_y;
if (line_height == 0)
{
if (last_height)
line_height = last_height;
else if (IT_CHARPOS (*it) < ZV)
{
move_it_by_lines (it, 1);
line_height = (it->max_ascent || it->max_descent
? it->max_ascent + it->max_descent
: last_height);
}
else
{
struct glyph_row *row = it->glyph_row;
/* Use the default character height. */
it->glyph_row = NULL;
it->what = IT_CHARACTER;
it->c = ' ';
it->len = 1;
PRODUCE_GLYPHS (it);
line_height = it->ascent + it->descent;
it->glyph_row = row;
}
}
return line_top_y + line_height;
}
DEFUN ("line-pixel-height", Fline_pixel_height,
Sline_pixel_height, 0, 0, 0,
doc: /* Return height in pixels of text line in the selected window.
Value is the height in pixels of the line at point. */)
(void)
{
struct it it;
struct text_pos pt;
struct window *w = XWINDOW (selected_window);
struct buffer *old_buffer = NULL;
Lisp_Object result;
if (XBUFFER (w->contents) != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal_1 (XBUFFER (w->contents));
}
SET_TEXT_POS (pt, PT, PT_BYTE);
start_display (&it, w, pt);
it.vpos = it.current_y = 0;
last_height = 0;
result = make_number (line_bottom_y (&it));
if (old_buffer)
set_buffer_internal_1 (old_buffer);
return result;
}
/* Return the default pixel height of text lines in window W. The
value is the canonical height of the W frame's default font, plus
any extra space required by the line-spacing variable or frame
parameter.
Implementation note: this ignores any line-spacing text properties
put on the newline characters. This is because those properties
only affect the _screen_ line ending in the newline (i.e., in a
continued line, only the last screen line will be affected), which
means only a small number of lines in a buffer can ever use this
feature. Since this function is used to compute the default pixel
equivalent of text lines in a window, we can safely ignore those
few lines. For the same reasons, we ignore the line-height
properties. */
int
default_line_pixel_height (struct window *w)
{
struct frame *f = WINDOW_XFRAME (w);
int height = FRAME_LINE_HEIGHT (f);
if (!FRAME_INITIAL_P (f) && BUFFERP (w->contents))
{
struct buffer *b = XBUFFER (w->contents);
Lisp_Object val = BVAR (b, extra_line_spacing);
if (NILP (val))
val = BVAR (&buffer_defaults, extra_line_spacing);
if (!NILP (val))
{
if (RANGED_INTEGERP (0, val, INT_MAX))
height += XFASTINT (val);
else if (FLOATP (val))
{
int addon = XFLOAT_DATA (val) * height + 0.5;
if (addon >= 0)
height += addon;
}
}
else
height += f->extra_line_spacing;
}
return height;
}
/* Subroutine of pos_visible_p below. Extracts a display string, if
any, from the display spec given as its argument. */
static Lisp_Object
string_from_display_spec (Lisp_Object spec)
{
if (CONSP (spec))
{
while (CONSP (spec))
{
if (STRINGP (XCAR (spec)))
return XCAR (spec);
spec = XCDR (spec);
}
}
else if (VECTORP (spec))
{
ptrdiff_t i;
for (i = 0; i < ASIZE (spec); i++)
{
if (STRINGP (AREF (spec, i)))
return AREF (spec, i);
}
return Qnil;
}
return spec;
}
/* Limit insanely large values of W->hscroll on frame F to the largest
value that will still prevent first_visible_x and last_visible_x of
'struct it' from overflowing an int. */
static int
window_hscroll_limited (struct window *w, struct frame *f)
{
ptrdiff_t window_hscroll = w->hscroll;
int window_text_width = window_box_width (w, TEXT_AREA);
int colwidth = FRAME_COLUMN_WIDTH (f);
if (window_hscroll > (INT_MAX - window_text_width) / colwidth - 1)
window_hscroll = (INT_MAX - window_text_width) / colwidth - 1;
return window_hscroll;
}
/* Return true if position CHARPOS is visible in window W.
CHARPOS < 0 means return info about WINDOW_END position.
If visible, set *X and *Y to pixel coordinates of top left corner.
Set *RTOP and *RBOT to pixel height of an invisible area of glyph at POS.
Set *ROWH and *VPOS to row's visible height and VPOS (row number). */
bool
pos_visible_p (struct window *w, ptrdiff_t charpos, int *x, int *y,
int *rtop, int *rbot, int *rowh, int *vpos)
{
struct it it;
void *itdata = bidi_shelve_cache ();
struct text_pos top;
bool visible_p = false;
struct buffer *old_buffer = NULL;
bool r2l = false;
if (FRAME_INITIAL_P (XFRAME (WINDOW_FRAME (w))))
return visible_p;
if (XBUFFER (w->contents) != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal_1 (XBUFFER (w->contents));
}
SET_TEXT_POS_FROM_MARKER (top, w->start);
/* Scrolling a minibuffer window via scroll bar when the echo area
shows long text sometimes resets the minibuffer contents behind
our backs. Also, someone might narrow-to-region and immediately
call a scroll function. */
if (CHARPOS (top) > ZV || CHARPOS (top) < BEGV)
SET_TEXT_POS (top, BEGV, BEGV_BYTE);
/* If the top of the window is after CHARPOS, the latter is surely
not visible. */
if (charpos >= 0 && CHARPOS (top) > charpos)
return visible_p;
/* Compute exact mode line heights. */
if (WINDOW_WANTS_MODELINE_P (w))
w->mode_line_height
= display_mode_line (w, CURRENT_MODE_LINE_FACE_ID (w),
BVAR (current_buffer, mode_line_format));
if (WINDOW_WANTS_HEADER_LINE_P (w))
w->header_line_height
= display_mode_line (w, HEADER_LINE_FACE_ID,
BVAR (current_buffer, header_line_format));
start_display (&it, w, top);
move_it_to (&it, charpos, -1, it.last_visible_y - 1, -1,
(charpos >= 0 ? MOVE_TO_POS : 0) | MOVE_TO_Y);
if (charpos >= 0
&& (((!it.bidi_p || it.bidi_it.scan_dir != -1)
&& IT_CHARPOS (it) >= charpos)
/* When scanning backwards under bidi iteration, move_it_to
stops at or _before_ CHARPOS, because it stops at or to
the _right_ of the character at CHARPOS. */
|| (it.bidi_p && it.bidi_it.scan_dir == -1
&& IT_CHARPOS (it) <= charpos)))
{
/* We have reached CHARPOS, or passed it. How the call to
move_it_to can overshoot: (i) If CHARPOS is on invisible text
or covered by a display property, move_it_to stops at the end
of the invisible text, to the right of CHARPOS. (ii) If
CHARPOS is in a display vector, move_it_to stops on its last
glyph. */
int top_x = it.current_x;
int top_y = it.current_y;
int window_top_y = WINDOW_HEADER_LINE_HEIGHT (w);
int bottom_y;
struct it save_it;
void *save_it_data = NULL;
/* Calling line_bottom_y may change it.method, it.position, etc. */
SAVE_IT (save_it, it, save_it_data);
last_height = 0;
bottom_y = line_bottom_y (&it);
if (top_y < window_top_y)
visible_p = bottom_y > window_top_y;
else if (top_y < it.last_visible_y)
visible_p = true;
if (bottom_y >= it.last_visible_y
&& it.bidi_p && it.bidi_it.scan_dir == -1
&& IT_CHARPOS (it) < charpos)
{
/* When the last line of the window is scanned backwards
under bidi iteration, we could be duped into thinking
that we have passed CHARPOS, when in fact move_it_to
simply stopped short of CHARPOS because it reached
last_visible_y. To see if that's what happened, we call
move_it_to again with a slightly larger vertical limit,
and see if it actually moved vertically; if it did, we
didn't really reach CHARPOS, which is beyond window end. */
/* Why 10? because we don't know how many canonical lines
will the height of the next line(s) be. So we guess. */
int ten_more_lines = 10 * default_line_pixel_height (w);
move_it_to (&it, charpos, -1, bottom_y + ten_more_lines, -1,
MOVE_TO_POS | MOVE_TO_Y);
if (it.current_y > top_y)
visible_p = false;
}
RESTORE_IT (&it, &save_it, save_it_data);
if (visible_p)
{
if (it.method == GET_FROM_DISPLAY_VECTOR)
{
/* We stopped on the last glyph of a display vector.
Try and recompute. Hack alert! */
if (charpos < 2 || top.charpos >= charpos)
top_x = it.glyph_row->x;
else
{
struct it it2, it2_prev;
/* The idea is to get to the previous buffer
position, consume the character there, and use
the pixel coordinates we get after that. But if
the previous buffer position is also displayed
from a display vector, we need to consume all of
the glyphs from that display vector. */
start_display (&it2, w, top);
move_it_to (&it2, charpos - 1, -1, -1, -1, MOVE_TO_POS);
/* If we didn't get to CHARPOS - 1, there's some
replacing display property at that position, and
we stopped after it. That is exactly the place
whose coordinates we want. */
if (IT_CHARPOS (it2) != charpos - 1)
it2_prev = it2;
else
{
/* Iterate until we get out of the display
vector that displays the character at
CHARPOS - 1. */
do {
get_next_display_element (&it2);
PRODUCE_GLYPHS (&it2);
it2_prev = it2;
set_iterator_to_next (&it2, true);
} while (it2.method == GET_FROM_DISPLAY_VECTOR
&& IT_CHARPOS (it2) < charpos);
}
if (ITERATOR_AT_END_OF_LINE_P (&it2_prev)
|| it2_prev.current_x > it2_prev.last_visible_x)
top_x = it.glyph_row->x;
else
{
top_x = it2_prev.current_x;
top_y = it2_prev.current_y;
}
}
}
else if (IT_CHARPOS (it) != charpos)
{
Lisp_Object cpos = make_number (charpos);
Lisp_Object spec = Fget_char_property (cpos, Qdisplay, Qnil);
Lisp_Object string = string_from_display_spec (spec);
struct text_pos tpos;
bool newline_in_string
= (STRINGP (string)
&& memchr (SDATA (string), '\n', SBYTES (string)));
SET_TEXT_POS (tpos, charpos, CHAR_TO_BYTE (charpos));
bool replacing_spec_p
= (!NILP (spec)
&& handle_display_spec (NULL, spec, Qnil, Qnil, &tpos,
charpos, FRAME_WINDOW_P (it.f)));
/* The tricky code below is needed because there's a
discrepancy between move_it_to and how we set cursor
when PT is at the beginning of a portion of text
covered by a display property or an overlay with a
display property, or the display line ends in a
newline from a display string. move_it_to will stop
_after_ such display strings, whereas
set_cursor_from_row conspires with cursor_row_p to
place the cursor on the first glyph produced from the
display string. */
/* We have overshoot PT because it is covered by a
display property that replaces the text it covers.
If the string includes embedded newlines, we are also
in the wrong display line. Backtrack to the correct
line, where the display property begins. */
if (replacing_spec_p)
{
Lisp_Object startpos, endpos;
EMACS_INT start, end;
struct it it3;
/* Find the first and the last buffer positions
covered by the display string. */
endpos =
Fnext_single_char_property_change (cpos, Qdisplay,
Qnil, Qnil);
startpos =
Fprevious_single_char_property_change (endpos, Qdisplay,
Qnil, Qnil);
start = XFASTINT (startpos);
end = XFASTINT (endpos);
/* Move to the last buffer position before the
display property. */
start_display (&it3, w, top);
if (start > CHARPOS (top))
move_it_to (&it3, start - 1, -1, -1, -1, MOVE_TO_POS);
/* Move forward one more line if the position before
the display string is a newline or if it is the
rightmost character on a line that is
continued or word-wrapped. */
if (it3.method == GET_FROM_BUFFER
&& (it3.c == '\n'
|| FETCH_BYTE (IT_BYTEPOS (it3)) == '\n'))
move_it_by_lines (&it3, 1);
else if (move_it_in_display_line_to (&it3, -1,
it3.current_x
+ it3.pixel_width,
MOVE_TO_X)
== MOVE_LINE_CONTINUED)
{
move_it_by_lines (&it3, 1);
/* When we are under word-wrap, the #$@%!
move_it_by_lines moves 2 lines, so we need to
fix that up. */
if (it3.line_wrap == WORD_WRAP)
move_it_by_lines (&it3, -1);
}
/* Record the vertical coordinate of the display
line where we wound up. */
top_y = it3.current_y;
if (it3.bidi_p)
{
/* When characters are reordered for display,
the character displayed to the left of the
display string could be _after_ the display
property in the logical order. Use the
smallest vertical position of these two. */
start_display (&it3, w, top);
move_it_to (&it3, end + 1, -1, -1, -1, MOVE_TO_POS);
if (it3.current_y < top_y)
top_y = it3.current_y;
}
/* Move from the top of the window to the beginning
of the display line where the display string
begins. */
start_display (&it3, w, top);
move_it_to (&it3, -1, 0, top_y, -1, MOVE_TO_X | MOVE_TO_Y);
/* If it3_moved stays false after the 'while' loop
below, that means we already were at a newline
before the loop (e.g., the display string begins
with a newline), so we don't need to (and cannot)
inspect the glyphs of it3.glyph_row, because
PRODUCE_GLYPHS will not produce anything for a
newline, and thus it3.glyph_row stays at its
stale content it got at top of the window. */
bool it3_moved = false;
/* Finally, advance the iterator until we hit the
first display element whose character position is
CHARPOS, or until the first newline from the
display string, which signals the end of the
display line. */
while (get_next_display_element (&it3))
{
PRODUCE_GLYPHS (&it3);
if (IT_CHARPOS (it3) == charpos
|| ITERATOR_AT_END_OF_LINE_P (&it3))
break;
it3_moved = true;
set_iterator_to_next (&it3, false);
}
top_x = it3.current_x - it3.pixel_width;
/* Normally, we would exit the above loop because we
found the display element whose character
position is CHARPOS. For the contingency that we
didn't, and stopped at the first newline from the
display string, move back over the glyphs
produced from the string, until we find the
rightmost glyph not from the string. */
if (it3_moved
&& newline_in_string
&& IT_CHARPOS (it3) != charpos && EQ (it3.object, string))
{
struct glyph *g = it3.glyph_row->glyphs[TEXT_AREA]
+ it3.glyph_row->used[TEXT_AREA];
while (EQ ((g - 1)->object, string))
{
--g;
top_x -= g->pixel_width;
}
eassert (g < it3.glyph_row->glyphs[TEXT_AREA]
+ it3.glyph_row->used[TEXT_AREA]);
}
}
}
*x = top_x;
*y = max (top_y + max (0, it.max_ascent - it.ascent), window_top_y);
*rtop = max (0, window_top_y - top_y);
*rbot = max (0, bottom_y - it.last_visible_y);
*rowh = max (0, (min (bottom_y, it.last_visible_y)
- max (top_y, window_top_y)));
*vpos = it.vpos;
if (it.bidi_it.paragraph_dir == R2L)
r2l = true;
}
}
else
{
/* Either we were asked to provide info about WINDOW_END, or
CHARPOS is in the partially visible glyph row at end of
window. */
struct it it2;
void *it2data = NULL;
SAVE_IT (it2, it, it2data);
if (IT_CHARPOS (it) < ZV && FETCH_BYTE (IT_BYTEPOS (it)) != '\n')
move_it_by_lines (&it, 1);
if (charpos < IT_CHARPOS (it)
|| (it.what == IT_EOB && charpos == IT_CHARPOS (it)))
{
visible_p = true;
RESTORE_IT (&it2, &it2, it2data);
move_it_to (&it2, charpos, -1, -1, -1, MOVE_TO_POS);
*x = it2.current_x;
*y = it2.current_y + it2.max_ascent - it2.ascent;
*rtop = max (0, -it2.current_y);
*rbot = max (0, ((it2.current_y + it2.max_ascent + it2.max_descent)
- it.last_visible_y));
*rowh = max (0, (min (it2.current_y + it2.max_ascent + it2.max_descent,
it.last_visible_y)
- max (it2.current_y,
WINDOW_HEADER_LINE_HEIGHT (w))));
*vpos = it2.vpos;
if (it2.bidi_it.paragraph_dir == R2L)
r2l = true;
}
else
bidi_unshelve_cache (it2data, true);
}
bidi_unshelve_cache (itdata, false);
if (old_buffer)
set_buffer_internal_1 (old_buffer);
if (visible_p)
{
if (w->hscroll > 0)
*x -=
window_hscroll_limited (w, WINDOW_XFRAME (w))
* WINDOW_FRAME_COLUMN_WIDTH (w);
/* For lines in an R2L paragraph, we need to mirror the X pixel
coordinate wrt the text area. For the reasons, see the
commentary in buffer_posn_from_coords and the explanation of
the geometry used by the move_it_* functions at the end of
the large commentary near the beginning of this file. */
if (r2l)
*x = window_box_width (w, TEXT_AREA) - *x - 1;
}
#if false
/* Debugging code. */
if (visible_p)
fprintf (stderr, "+pv pt=%d vs=%d --> x=%d y=%d rt=%d rb=%d rh=%d vp=%d\n",
charpos, w->vscroll, *x, *y, *rtop, *rbot, *rowh, *vpos);
else
fprintf (stderr, "-pv pt=%d vs=%d\n", charpos, w->vscroll);
#endif
return visible_p;
}
/* Return the next character from STR. Return in *LEN the length of
the character. This is like STRING_CHAR_AND_LENGTH but never
returns an invalid character. If we find one, we return a `?', but
with the length of the invalid character. */
static int
string_char_and_length (const unsigned char *str, int *len)
{
int c;
c = STRING_CHAR_AND_LENGTH (str, *len);
if (!CHAR_VALID_P (c))
/* We may not change the length here because other places in Emacs
don't use this function, i.e. they silently accept invalid
characters. */
c = '?';
return c;
}
/* Given a position POS containing a valid character and byte position
in STRING, return the position NCHARS ahead (NCHARS >= 0). */
static struct text_pos
string_pos_nchars_ahead (struct text_pos pos, Lisp_Object string, ptrdiff_t nchars)
{
eassert (STRINGP (string) && nchars >= 0);
if (STRING_MULTIBYTE (string))
{
const unsigned char *p = SDATA (string) + BYTEPOS (pos);
int len;
while (nchars--)
{
string_char_and_length (p, &len);
p += len;
CHARPOS (pos) += 1;
BYTEPOS (pos) += len;
}
}
else
SET_TEXT_POS (pos, CHARPOS (pos) + nchars, BYTEPOS (pos) + nchars);
return pos;
}
/* Value is the text position, i.e. character and byte position,
for character position CHARPOS in STRING. */
static struct text_pos
string_pos (ptrdiff_t charpos, Lisp_Object string)
{
struct text_pos pos;
eassert (STRINGP (string));
eassert (charpos >= 0);
SET_TEXT_POS (pos, charpos, string_char_to_byte (string, charpos));
return pos;
}
/* Value is a text position, i.e. character and byte position, for
character position CHARPOS in C string S. MULTIBYTE_P
means recognize multibyte characters. */
static struct text_pos
c_string_pos (ptrdiff_t charpos, const char *s, bool multibyte_p)
{
struct text_pos pos;
eassert (s != NULL);
eassert (charpos >= 0);
if (multibyte_p)
{
int len;
SET_TEXT_POS (pos, 0, 0);
while (charpos--)
{
string_char_and_length ((const unsigned char *) s, &len);
s += len;
CHARPOS (pos) += 1;
BYTEPOS (pos) += len;
}
}
else
SET_TEXT_POS (pos, charpos, charpos);
return pos;
}
/* Value is the number of characters in C string S. MULTIBYTE_P
means recognize multibyte characters. */
static ptrdiff_t
number_of_chars (const char *s, bool multibyte_p)
{
ptrdiff_t nchars;
if (multibyte_p)
{
ptrdiff_t rest = strlen (s);
int len;
const unsigned char *p = (const unsigned char *) s;
for (nchars = 0; rest > 0; ++nchars)
{
string_char_and_length (p, &len);
rest -= len, p += len;
}
}
else
nchars = strlen (s);
return nchars;
}
/* Compute byte position NEWPOS->bytepos corresponding to
NEWPOS->charpos. POS is a known position in string STRING.
NEWPOS->charpos must be >= POS.charpos. */
static void
compute_string_pos (struct text_pos *newpos, struct text_pos pos, Lisp_Object string)
{
eassert (STRINGP (string));
eassert (CHARPOS (*newpos) >= CHARPOS (pos));
if (STRING_MULTIBYTE (string))
*newpos = string_pos_nchars_ahead (pos, string,
CHARPOS (*newpos) - CHARPOS (pos));
else
BYTEPOS (*newpos) = CHARPOS (*newpos);
}
/* EXPORT:
Return an estimation of the pixel height of mode or header lines on
frame F. FACE_ID specifies what line's height to estimate. */
int
estimate_mode_line_height (struct frame *f, enum face_id face_id)
{
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (f))
{
int height = FONT_HEIGHT (FRAME_FONT (f));
/* This function is called so early when Emacs starts that the face
cache and mode line face are not yet initialized. */
if (FRAME_FACE_CACHE (f))
{
struct face *face = FACE_FROM_ID_OR_NULL (f, face_id);
if (face)
{
if (face->font)
height = normal_char_height (face->font, -1);
if (face->box_line_width > 0)
height += 2 * face->box_line_width;
}
}
return height;
}
#endif
return 1;
}
/* Given a pixel position (PIX_X, PIX_Y) on frame F, return glyph
co-ordinates in (*X, *Y). Set *BOUNDS to the rectangle that the
glyph at X, Y occupies, if BOUNDS != 0. If NOCLIP, do
not force the value into range. */
void
pixel_to_glyph_coords (struct frame *f, int pix_x, int pix_y, int *x, int *y,
NativeRectangle *bounds, bool noclip)
{
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (f))
{
/* Arrange for the division in FRAME_PIXEL_X_TO_COL etc. to round down
even for negative values. */
if (pix_x < 0)
pix_x -= FRAME_COLUMN_WIDTH (f) - 1;
if (pix_y < 0)
pix_y -= FRAME_LINE_HEIGHT (f) - 1;
pix_x = FRAME_PIXEL_X_TO_COL (f, pix_x);
pix_y = FRAME_PIXEL_Y_TO_LINE (f, pix_y);
if (bounds)
STORE_NATIVE_RECT (*bounds,
FRAME_COL_TO_PIXEL_X (f, pix_x),
FRAME_LINE_TO_PIXEL_Y (f, pix_y),
FRAME_COLUMN_WIDTH (f) - 1,
FRAME_LINE_HEIGHT (f) - 1);
/* PXW: Should we clip pixels before converting to columns/lines? */
if (!noclip)
{
if (pix_x < 0)
pix_x = 0;
else if (pix_x > FRAME_TOTAL_COLS (f))
pix_x = FRAME_TOTAL_COLS (f);
if (pix_y < 0)
pix_y = 0;
else if (pix_y > FRAME_TOTAL_LINES (f))
pix_y = FRAME_TOTAL_LINES (f);
}
}
#endif
*x = pix_x;
*y = pix_y;
}
/* Find the glyph under window-relative coordinates X/Y in window W.
Consider only glyphs from buffer text, i.e. no glyphs from overlay
strings. Return in *HPOS and *VPOS the row and column number of
the glyph found. Return in *AREA the glyph area containing X.
Value is a pointer to the glyph found or null if X/Y is not on
text, or we can't tell because W's current matrix is not up to
date. */
static struct glyph *
x_y_to_hpos_vpos (struct window *w, int x, int y, int *hpos, int *vpos,
int *dx, int *dy, int *area)
{
struct glyph *glyph, *end;
struct glyph_row *row = NULL;
int x0, i;
/* Find row containing Y. Give up if some row is not enabled. */
for (i = 0; i < w->current_matrix->nrows; ++i)
{
row = MATRIX_ROW (w->current_matrix, i);
if (!row->enabled_p)
return NULL;
if (y >= row->y && y < MATRIX_ROW_BOTTOM_Y (row))
break;
}
*vpos = i;
*hpos = 0;
/* Give up if Y is not in the window. */
if (i == w->current_matrix->nrows)
return NULL;
/* Get the glyph area containing X. */
if (w->pseudo_window_p)
{
*area = TEXT_AREA;
x0 = 0;
}
else
{
if (x < window_box_left_offset (w, TEXT_AREA))
{
*area = LEFT_MARGIN_AREA;
x0 = window_box_left_offset (w, LEFT_MARGIN_AREA);
}
else if (x < window_box_right_offset (w, TEXT_AREA))
{
*area = TEXT_AREA;
x0 = window_box_left_offset (w, TEXT_AREA) + min (row->x, 0);
}
else
{
*area = RIGHT_MARGIN_AREA;
x0 = window_box_left_offset (w, RIGHT_MARGIN_AREA);
}
}
/* Find glyph containing X. */
glyph = row->glyphs[*area];
end = glyph + row->used[*area];
x -= x0;
while (glyph < end && x >= glyph->pixel_width)
{
x -= glyph->pixel_width;
++glyph;
}
if (glyph == end)
return NULL;
if (dx)
{
*dx = x;
*dy = y - (row->y + row->ascent - glyph->ascent);
}
*hpos = glyph - row->glyphs[*area];
return glyph;
}
/* Convert frame-relative x/y to coordinates relative to window W.
Takes pseudo-windows into account. */
static void
frame_to_window_pixel_xy (struct window *w, int *x, int *y)
{
if (w->pseudo_window_p)
{
/* A pseudo-window is always full-width, and starts at the
left edge of the frame, plus a frame border. */
struct frame *f = XFRAME (w->frame);
*x -= FRAME_INTERNAL_BORDER_WIDTH (f);
*y = FRAME_TO_WINDOW_PIXEL_Y (w, *y);
}
else
{
*x -= WINDOW_LEFT_EDGE_X (w);
*y = FRAME_TO_WINDOW_PIXEL_Y (w, *y);
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* EXPORT:
Return in RECTS[] at most N clipping rectangles for glyph string S.
Return the number of stored rectangles. */
int
get_glyph_string_clip_rects (struct glyph_string *s, NativeRectangle *rects, int n)
{
XRectangle r;
if (n <= 0)
return 0;
if (s->row->full_width_p)
{
/* Draw full-width. X coordinates are relative to S->w->left_col. */
r.x = WINDOW_LEFT_EDGE_X (s->w);
if (s->row->mode_line_p)
r.width = WINDOW_PIXEL_WIDTH (s->w) - WINDOW_RIGHT_DIVIDER_WIDTH (s->w);
else
r.width = WINDOW_PIXEL_WIDTH (s->w);
/* Unless displaying a mode or menu bar line, which are always
fully visible, clip to the visible part of the row. */
if (s->w->pseudo_window_p)
r.height = s->row->visible_height;
else
r.height = s->height;
}
else
{
/* This is a text line that may be partially visible. */
r.x = window_box_left (s->w, s->area);
r.width = window_box_width (s->w, s->area);
r.height = s->row->visible_height;
}
if (s->clip_head)
if (r.x < s->clip_head->x)
{
if (r.width >= s->clip_head->x - r.x)
r.width -= s->clip_head->x - r.x;
else
r.width = 0;
r.x = s->clip_head->x;
}
if (s->clip_tail)
if (r.x + r.width > s->clip_tail->x + s->clip_tail->background_width)
{
if (s->clip_tail->x + s->clip_tail->background_width >= r.x)
r.width = s->clip_tail->x + s->clip_tail->background_width - r.x;
else
r.width = 0;
}
/* If S draws overlapping rows, it's sufficient to use the top and
bottom of the window for clipping because this glyph string
intentionally draws over other lines. */
if (s->for_overlaps)
{
r.y = WINDOW_HEADER_LINE_HEIGHT (s->w);
r.height = window_text_bottom_y (s->w) - r.y;
/* Alas, the above simple strategy does not work for the
environments with anti-aliased text: if the same text is
drawn onto the same place multiple times, it gets thicker.
If the overlap we are processing is for the erased cursor, we
take the intersection with the rectangle of the cursor. */
if (s->for_overlaps & OVERLAPS_ERASED_CURSOR)
{
XRectangle rc, r_save = r;
rc.x = WINDOW_TEXT_TO_FRAME_PIXEL_X (s->w, s->w->phys_cursor.x);
rc.y = s->w->phys_cursor.y;
rc.width = s->w->phys_cursor_width;
rc.height = s->w->phys_cursor_height;
x_intersect_rectangles (&r_save, &rc, &r);
}
}
else
{
/* Don't use S->y for clipping because it doesn't take partially
visible lines into account. For example, it can be negative for
partially visible lines at the top of a window. */
if (!s->row->full_width_p
&& MATRIX_ROW_PARTIALLY_VISIBLE_AT_TOP_P (s->w, s->row))
r.y = WINDOW_HEADER_LINE_HEIGHT (s->w);
else
r.y = max (0, s->row->y);
}
r.y = WINDOW_TO_FRAME_PIXEL_Y (s->w, r.y);
/* If drawing the cursor, don't let glyph draw outside its
advertised boundaries. Cleartype does this under some circumstances. */
if (s->hl == DRAW_CURSOR)
{
struct glyph *glyph = s->first_glyph;
int height, max_y;
if (s->x > r.x)
{
if (r.width >= s->x - r.x)
r.width -= s->x - r.x;
else /* R2L hscrolled row with cursor outside text area */
r.width = 0;
r.x = s->x;
}
r.width = min (r.width, glyph->pixel_width);
/* If r.y is below window bottom, ensure that we still see a cursor. */
height = min (glyph->ascent + glyph->descent,
min (FRAME_LINE_HEIGHT (s->f), s->row->visible_height));
max_y = window_text_bottom_y (s->w) - height;
max_y = WINDOW_TO_FRAME_PIXEL_Y (s->w, max_y);
if (s->ybase - glyph->ascent > max_y)
{
r.y = max_y;
r.height = height;
}
else
{
/* Don't draw cursor glyph taller than our actual glyph. */
height = max (FRAME_LINE_HEIGHT (s->f), glyph->ascent + glyph->descent);
if (height < r.height)
{
max_y = r.y + r.height;
r.y = min (max_y, max (r.y, s->ybase + glyph->descent - height));
r.height = min (max_y - r.y, height);
}
}
}
if (s->row->clip)
{
XRectangle r_save = r;
if (! x_intersect_rectangles (&r_save, s->row->clip, &r))
r.width = 0;
}
if ((s->for_overlaps & OVERLAPS_BOTH) == 0
|| ((s->for_overlaps & OVERLAPS_BOTH) == OVERLAPS_BOTH && n == 1))
{
#ifdef CONVERT_FROM_XRECT
CONVERT_FROM_XRECT (r, *rects);
#else
*rects = r;
#endif
return 1;
}
else
{
/* If we are processing overlapping and allowed to return
multiple clipping rectangles, we exclude the row of the glyph
string from the clipping rectangle. This is to avoid drawing
the same text on the environment with anti-aliasing. */
#ifdef CONVERT_FROM_XRECT
XRectangle rs[2];
#else
XRectangle *rs = rects;
#endif
int i = 0, row_y = WINDOW_TO_FRAME_PIXEL_Y (s->w, s->row->y);
if (s->for_overlaps & OVERLAPS_PRED)
{
rs[i] = r;
if (r.y + r.height > row_y)
{
if (r.y < row_y)
rs[i].height = row_y - r.y;
else
rs[i].height = 0;
}
i++;
}
if (s->for_overlaps & OVERLAPS_SUCC)
{
rs[i] = r;
if (r.y < row_y + s->row->visible_height)
{
if (r.y + r.height > row_y + s->row->visible_height)
{
rs[i].y = row_y + s->row->visible_height;
rs[i].height = r.y + r.height - rs[i].y;
}
else
rs[i].height = 0;
}
i++;
}
n = i;
#ifdef CONVERT_FROM_XRECT
for (i = 0; i < n; i++)
CONVERT_FROM_XRECT (rs[i], rects[i]);
#endif
return n;
}
}
/* EXPORT:
Return in *NR the clipping rectangle for glyph string S. */
void
get_glyph_string_clip_rect (struct glyph_string *s, NativeRectangle *nr)
{
get_glyph_string_clip_rects (s, nr, 1);
}
/* EXPORT:
Return the position and height of the phys cursor in window W.
Set w->phys_cursor_width to width of phys cursor.
*/
void
get_phys_cursor_geometry (struct window *w, struct glyph_row *row,
struct glyph *glyph, int *xp, int *yp, int *heightp)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
int x, y, wd, h, h0, y0, ascent;
/* Compute the width of the rectangle to draw. If on a stretch
glyph, and `x-stretch-block-cursor' is nil, don't draw a
rectangle as wide as the glyph, but use a canonical character
width instead. */
wd = glyph->pixel_width;
x = w->phys_cursor.x;
if (x < 0)
{
wd += x;
x = 0;
}
if (glyph->type == STRETCH_GLYPH
&& !x_stretch_cursor_p)
wd = min (FRAME_COLUMN_WIDTH (f), wd);
w->phys_cursor_width = wd;
/* Don't let the hollow cursor glyph descend below the glyph row's
ascent value, lest the hollow cursor looks funny. */
y = w->phys_cursor.y;
ascent = row->ascent;
if (row->ascent < glyph->ascent)
{
y -= glyph->ascent - row->ascent;
ascent = glyph->ascent;
}
/* If y is below window bottom, ensure that we still see a cursor. */
h0 = min (FRAME_LINE_HEIGHT (f), row->visible_height);
h = max (h0, ascent + glyph->descent);
h0 = min (h0, ascent + glyph->descent);
y0 = WINDOW_HEADER_LINE_HEIGHT (w);
if (y < y0)
{
h = max (h - (y0 - y) + 1, h0);
y = y0 - 1;
}
else
{
y0 = window_text_bottom_y (w) - h0;
if (y > y0)
{
h += y - y0;
y = y0;
}
}
*xp = WINDOW_TEXT_TO_FRAME_PIXEL_X (w, x);
*yp = WINDOW_TO_FRAME_PIXEL_Y (w, y);
*heightp = h;
}
/*
* Remember which glyph the mouse is over.
*/
void
remember_mouse_glyph (struct frame *f, int gx, int gy, NativeRectangle *rect)
{
Lisp_Object window;
struct window *w;
struct glyph_row *r, *gr, *end_row;
enum window_part part;
enum glyph_row_area area;
int x, y, width, height;
/* Try to determine frame pixel position and size of the glyph under
frame pixel coordinates X/Y on frame F. */
if (window_resize_pixelwise)
{
width = height = 1;
goto virtual_glyph;
}
else if (!f->glyphs_initialized_p
|| (window = window_from_coordinates (f, gx, gy, &part, false),
NILP (window)))
{
width = FRAME_SMALLEST_CHAR_WIDTH (f);
height = FRAME_SMALLEST_FONT_HEIGHT (f);
goto virtual_glyph;
}
w = XWINDOW (window);
width = WINDOW_FRAME_COLUMN_WIDTH (w);
height = WINDOW_FRAME_LINE_HEIGHT (w);
x = window_relative_x_coord (w, part, gx);
y = gy - WINDOW_TOP_EDGE_Y (w);
r = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w);
if (w->pseudo_window_p)
{
area = TEXT_AREA;
part = ON_MODE_LINE; /* Don't adjust margin. */
goto text_glyph;
}
switch (part)
{
case ON_LEFT_MARGIN:
area = LEFT_MARGIN_AREA;
goto text_glyph;
case ON_RIGHT_MARGIN:
area = RIGHT_MARGIN_AREA;
goto text_glyph;
case ON_HEADER_LINE:
case ON_MODE_LINE:
gr = (part == ON_HEADER_LINE
? MATRIX_HEADER_LINE_ROW (w->current_matrix)
: MATRIX_MODE_LINE_ROW (w->current_matrix));
gy = gr->y;
area = TEXT_AREA;
goto text_glyph_row_found;
case ON_TEXT:
area = TEXT_AREA;
text_glyph:
gr = 0; gy = 0;
for (; r <= end_row && r->enabled_p; ++r)
if (r->y + r->height > y)
{
gr = r; gy = r->y;
break;
}
text_glyph_row_found:
if (gr && gy <= y)
{
struct glyph *g = gr->glyphs[area];
struct glyph *end = g + gr->used[area];
height = gr->height;
for (gx = gr->x; g < end; gx += g->pixel_width, ++g)
if (gx + g->pixel_width > x)
break;
if (g < end)
{
if (g->type == IMAGE_GLYPH)
{
/* Don't remember when mouse is over image, as
image may have hot-spots. */
STORE_NATIVE_RECT (*rect, 0, 0, 0, 0);
return;
}
width = g->pixel_width;
}
else
{
/* Use nominal char spacing at end of line. */
x -= gx;
gx += (x / width) * width;
}
if (part != ON_MODE_LINE && part != ON_HEADER_LINE)
{
gx += window_box_left_offset (w, area);
/* Don't expand over the modeline to make sure the vertical
drag cursor is shown early enough. */
height = min (height,
max (0, WINDOW_BOX_HEIGHT_NO_MODE_LINE (w) - gy));
}
}
else
{
/* Use nominal line height at end of window. */
gx = (x / width) * width;
y -= gy;
gy += (y / height) * height;
if (part != ON_MODE_LINE && part != ON_HEADER_LINE)
/* See comment above. */
height = min (height,
max (0, WINDOW_BOX_HEIGHT_NO_MODE_LINE (w) - gy));
}
break;
case ON_LEFT_FRINGE:
gx = (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? WINDOW_LEFT_SCROLL_BAR_AREA_WIDTH (w)
: window_box_right_offset (w, LEFT_MARGIN_AREA));
width = WINDOW_LEFT_FRINGE_WIDTH (w);
goto row_glyph;
case ON_RIGHT_FRINGE:
gx = (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? window_box_right_offset (w, RIGHT_MARGIN_AREA)
: window_box_right_offset (w, TEXT_AREA));
if (WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0
&& !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)
&& !WINDOW_RIGHTMOST_P (w))
if (gx < WINDOW_PIXEL_WIDTH (w) - width)
/* Make sure the vertical border can get her own glyph to the
right of the one we build here. */
width = WINDOW_RIGHT_FRINGE_WIDTH (w) - width;
else
width = WINDOW_PIXEL_WIDTH (w) - gx;
else
width = WINDOW_RIGHT_FRINGE_WIDTH (w);
goto row_glyph;
case ON_VERTICAL_BORDER:
gx = WINDOW_PIXEL_WIDTH (w) - width;
goto row_glyph;
case ON_VERTICAL_SCROLL_BAR:
gx = (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w)
? 0
: (window_box_right_offset (w, RIGHT_MARGIN_AREA)
+ (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? WINDOW_RIGHT_FRINGE_WIDTH (w)
: 0)));
width = WINDOW_SCROLL_BAR_AREA_WIDTH (w);
row_glyph:
gr = 0, gy = 0;
for (; r <= end_row && r->enabled_p; ++r)
if (r->y + r->height > y)
{
gr = r; gy = r->y;
break;
}
if (gr && gy <= y)
height = gr->height;
else
{
/* Use nominal line height at end of window. */
y -= gy;
gy += (y / height) * height;
}
break;
case ON_RIGHT_DIVIDER:
gx = WINDOW_PIXEL_WIDTH (w) - WINDOW_RIGHT_DIVIDER_WIDTH (w);
width = WINDOW_RIGHT_DIVIDER_WIDTH (w);
gy = 0;
/* The bottom divider prevails. */
height = WINDOW_PIXEL_HEIGHT (w) - WINDOW_BOTTOM_DIVIDER_WIDTH (w);
goto add_edge;
case ON_BOTTOM_DIVIDER:
gx = 0;
width = WINDOW_PIXEL_WIDTH (w);
gy = WINDOW_PIXEL_HEIGHT (w) - WINDOW_BOTTOM_DIVIDER_WIDTH (w);
height = WINDOW_BOTTOM_DIVIDER_WIDTH (w);
goto add_edge;
default:
;
virtual_glyph:
/* If there is no glyph under the mouse, then we divide the screen
into a grid of the smallest glyph in the frame, and use that
as our "glyph". */
/* Arrange for the division in FRAME_PIXEL_X_TO_COL etc. to
round down even for negative values. */
if (gx < 0)
gx -= width - 1;
if (gy < 0)
gy -= height - 1;
gx = (gx / width) * width;
gy = (gy / height) * height;
goto store_rect;
}
add_edge:
gx += WINDOW_LEFT_EDGE_X (w);
gy += WINDOW_TOP_EDGE_Y (w);
store_rect:
STORE_NATIVE_RECT (*rect, gx, gy, width, height);
/* Visible feedback for debugging. */
#if false && defined HAVE_X_WINDOWS
XDrawRectangle (FRAME_X_DISPLAY (f), FRAME_X_DRAWABLE (f),
f->output_data.x->normal_gc,
gx, gy, width, height);
#endif
}
#endif /* HAVE_WINDOW_SYSTEM */
static void
adjust_window_ends (struct window *w, struct glyph_row *row, bool current)
{
eassert (w);
w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (row);
w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
w->window_end_vpos
= MATRIX_ROW_VPOS (row, current ? w->current_matrix : w->desired_matrix);
}
/***********************************************************************
Lisp form evaluation
***********************************************************************/
/* Error handler for safe_eval and safe_call. */
static Lisp_Object
safe_eval_handler (Lisp_Object arg, ptrdiff_t nargs, Lisp_Object *args)
{
add_to_log ("Error during redisplay: %S signaled %S",
Flist (nargs, args), arg);
return Qnil;
}
/* Call function FUNC with the rest of NARGS - 1 arguments
following. Return the result, or nil if something went
wrong. Prevent redisplay during the evaluation. */
static Lisp_Object
safe__call (bool inhibit_quit, ptrdiff_t nargs, Lisp_Object func, va_list ap)
{
Lisp_Object val;
if (inhibit_eval_during_redisplay)
val = Qnil;
else
{
ptrdiff_t i;
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object *args;
USE_SAFE_ALLOCA;
SAFE_ALLOCA_LISP (args, nargs);
args[0] = func;
for (i = 1; i < nargs; i++)
args[i] = va_arg (ap, Lisp_Object);
specbind (Qinhibit_redisplay, Qt);
if (inhibit_quit)
specbind (Qinhibit_quit, Qt);
/* Use Qt to ensure debugger does not run,
so there is no possibility of wanting to redisplay. */
val = internal_condition_case_n (Ffuncall, nargs, args, Qt,
safe_eval_handler);
SAFE_FREE ();
val = unbind_to (count, val);
}
return val;
}
Lisp_Object
safe_call (ptrdiff_t nargs, Lisp_Object func, ...)
{
Lisp_Object retval;
va_list ap;
va_start (ap, func);
retval = safe__call (false, nargs, func, ap);
va_end (ap);
return retval;
}
/* Call function FN with one argument ARG.
Return the result, or nil if something went wrong. */
Lisp_Object
safe_call1 (Lisp_Object fn, Lisp_Object arg)
{
return safe_call (2, fn, arg);
}
static Lisp_Object
safe__call1 (bool inhibit_quit, Lisp_Object fn, ...)
{
Lisp_Object retval;
va_list ap;
va_start (ap, fn);
retval = safe__call (inhibit_quit, 2, fn, ap);
va_end (ap);
return retval;
}
Lisp_Object
safe_eval (Lisp_Object sexpr)
{
return safe__call1 (false, Qeval, sexpr);
}
static Lisp_Object
safe__eval (bool inhibit_quit, Lisp_Object sexpr)
{
return safe__call1 (inhibit_quit, Qeval, sexpr);
}
/* Call function FN with two arguments ARG1 and ARG2.
Return the result, or nil if something went wrong. */
Lisp_Object
safe_call2 (Lisp_Object fn, Lisp_Object arg1, Lisp_Object arg2)
{
return safe_call (3, fn, arg1, arg2);
}
\f
/***********************************************************************
Debugging
***********************************************************************/
/* Define CHECK_IT to perform sanity checks on iterators.
This is for debugging. It is too slow to do unconditionally. */
static void
CHECK_IT (struct it *it)
{
#if false
if (it->method == GET_FROM_STRING)
{
eassert (STRINGP (it->string));
eassert (IT_STRING_CHARPOS (*it) >= 0);
}
else
{
eassert (IT_STRING_CHARPOS (*it) < 0);
if (it->method == GET_FROM_BUFFER)
{
/* Check that character and byte positions agree. */
eassert (IT_CHARPOS (*it) == BYTE_TO_CHAR (IT_BYTEPOS (*it)));
}
}
if (it->dpvec)
eassert (it->current.dpvec_index >= 0);
else
eassert (it->current.dpvec_index < 0);
#endif
}
/* Check that the window end of window W is what we expect it
to be---the last row in the current matrix displaying text. */
static void
CHECK_WINDOW_END (struct window *w)
{
#if defined GLYPH_DEBUG && defined ENABLE_CHECKING
if (!MINI_WINDOW_P (w) && w->window_end_valid)
{
struct glyph_row *row;
eassert ((row = MATRIX_ROW (w->current_matrix, w->window_end_vpos),
!row->enabled_p
|| MATRIX_ROW_DISPLAYS_TEXT_P (row)
|| MATRIX_ROW_VPOS (row, w->current_matrix) == 0));
}
#endif
}
/***********************************************************************
Iterator initialization
***********************************************************************/
/* Initialize IT for displaying current_buffer in window W, starting
at character position CHARPOS. CHARPOS < 0 means that no buffer
position is specified which is useful when the iterator is assigned
a position later. BYTEPOS is the byte position corresponding to
CHARPOS.
If ROW is not null, calls to produce_glyphs with IT as parameter
will produce glyphs in that row.
BASE_FACE_ID is the id of a base face to use. It must be one of
DEFAULT_FACE_ID for normal text, MODE_LINE_FACE_ID,
MODE_LINE_INACTIVE_FACE_ID, or HEADER_LINE_FACE_ID for displaying
mode lines, or TOOL_BAR_FACE_ID for displaying the tool-bar.
If ROW is null and BASE_FACE_ID is equal to MODE_LINE_FACE_ID,
MODE_LINE_INACTIVE_FACE_ID, or HEADER_LINE_FACE_ID, the iterator
will be initialized to use the corresponding mode line glyph row of
the desired matrix of W. */
void
init_iterator (struct it *it, struct window *w,
ptrdiff_t charpos, ptrdiff_t bytepos,
struct glyph_row *row, enum face_id base_face_id)
{
enum face_id remapped_base_face_id = base_face_id;
/* Some precondition checks. */
eassert (w != NULL && it != NULL);
eassert (charpos < 0 || (charpos >= BUF_BEG (current_buffer)
&& charpos <= ZV));
/* If face attributes have been changed since the last redisplay,
free realized faces now because they depend on face definitions
that might have changed. Don't free faces while there might be
desired matrices pending which reference these faces. */
if (!inhibit_free_realized_faces)
{
if (face_change)
{
face_change = false;
free_all_realized_faces (Qnil);
}
else if (XFRAME (w->frame)->face_change)
{
XFRAME (w->frame)->face_change = 0;
free_all_realized_faces (w->frame);
}
}
/* Perhaps remap BASE_FACE_ID to a user-specified alternative. */
if (! NILP (Vface_remapping_alist))
remapped_base_face_id
= lookup_basic_face (XFRAME (w->frame), base_face_id);
/* Use one of the mode line rows of W's desired matrix if
appropriate. */
if (row == NULL)
{
if (base_face_id == MODE_LINE_FACE_ID
|| base_face_id == MODE_LINE_INACTIVE_FACE_ID)
row = MATRIX_MODE_LINE_ROW (w->desired_matrix);
else if (base_face_id == HEADER_LINE_FACE_ID)
row = MATRIX_HEADER_LINE_ROW (w->desired_matrix);
}
/* Clear IT, and set it->object and other IT's Lisp objects to Qnil.
Other parts of redisplay rely on that. */
memclear (it, sizeof *it);
it->current.overlay_string_index = -1;
it->current.dpvec_index = -1;
it->base_face_id = remapped_base_face_id;
IT_STRING_CHARPOS (*it) = IT_STRING_BYTEPOS (*it) = -1;
it->paragraph_embedding = L2R;
it->bidi_it.w = w;
/* The window in which we iterate over current_buffer: */
XSETWINDOW (it->window, w);
it->w = w;
it->f = XFRAME (w->frame);
it->cmp_it.id = -1;
/* Extra space between lines (on window systems only). */
if (base_face_id == DEFAULT_FACE_ID
&& FRAME_WINDOW_P (it->f))
{
if (NATNUMP (BVAR (current_buffer, extra_line_spacing)))
it->extra_line_spacing = XFASTINT (BVAR (current_buffer, extra_line_spacing));
else if (FLOATP (BVAR (current_buffer, extra_line_spacing)))
it->extra_line_spacing = (XFLOAT_DATA (BVAR (current_buffer, extra_line_spacing))
* FRAME_LINE_HEIGHT (it->f));
else if (it->f->extra_line_spacing > 0)
it->extra_line_spacing = it->f->extra_line_spacing;
}
/* If realized faces have been removed, e.g. because of face
attribute changes of named faces, recompute them. When running
in batch mode, the face cache of the initial frame is null. If
we happen to get called, make a dummy face cache. */
if (FRAME_FACE_CACHE (it->f) == NULL)
init_frame_faces (it->f);
if (FRAME_FACE_CACHE (it->f)->used == 0)
recompute_basic_faces (it->f);
it->override_ascent = -1;
/* Are control characters displayed as `^C'? */
it->ctl_arrow_p = !NILP (BVAR (current_buffer, ctl_arrow));
/* -1 means everything between a CR and the following line end
is invisible. >0 means lines indented more than this value are
invisible. */
it->selective = (INTEGERP (BVAR (current_buffer, selective_display))
? (clip_to_bounds
(-1, XINT (BVAR (current_buffer, selective_display)),
PTRDIFF_MAX))
: (!NILP (BVAR (current_buffer, selective_display))
? -1 : 0));
it->selective_display_ellipsis_p
= !NILP (BVAR (current_buffer, selective_display_ellipses));
/* Display table to use. */
it->dp = window_display_table (w);
/* Are multibyte characters enabled in current_buffer? */
it->multibyte_p = !NILP (BVAR (current_buffer, enable_multibyte_characters));
/* Get the position at which the redisplay_end_trigger hook should
be run, if it is to be run at all. */
if (MARKERP (w->redisplay_end_trigger)
&& XMARKER (w->redisplay_end_trigger)->buffer != 0)
it->redisplay_end_trigger_charpos
= marker_position (w->redisplay_end_trigger);
else if (INTEGERP (w->redisplay_end_trigger))
it->redisplay_end_trigger_charpos
= clip_to_bounds (PTRDIFF_MIN, XINT (w->redisplay_end_trigger),
PTRDIFF_MAX);
it->tab_width = SANE_TAB_WIDTH (current_buffer);
/* Are lines in the display truncated? */
if (TRUNCATE != 0)
it->line_wrap = TRUNCATE;
if (base_face_id == DEFAULT_FACE_ID
&& !it->w->hscroll
&& (WINDOW_FULL_WIDTH_P (it->w)
|| NILP (Vtruncate_partial_width_windows)
|| (INTEGERP (Vtruncate_partial_width_windows)
/* PXW: Shall we do something about this? */
&& (XINT (Vtruncate_partial_width_windows)
<= WINDOW_TOTAL_COLS (it->w))))
&& NILP (BVAR (current_buffer, truncate_lines)))
it->line_wrap = NILP (BVAR (current_buffer, word_wrap))
? WINDOW_WRAP : WORD_WRAP;
/* Get dimensions of truncation and continuation glyphs. These are
displayed as fringe bitmaps under X, but we need them for such
frames when the fringes are turned off. But leave the dimensions
zero for tooltip frames, as these glyphs look ugly there and also
sabotage calculations of tooltip dimensions in x-show-tip. */
#ifdef HAVE_WINDOW_SYSTEM
if (!(FRAME_WINDOW_P (it->f)
&& FRAMEP (tip_frame)
&& it->f == XFRAME (tip_frame)))
#endif
{
if (it->line_wrap == TRUNCATE)
{
/* We will need the truncation glyph. */
eassert (it->glyph_row == NULL);
produce_special_glyphs (it, IT_TRUNCATION);
it->truncation_pixel_width = it->pixel_width;
}
else
{
/* We will need the continuation glyph. */
eassert (it->glyph_row == NULL);
produce_special_glyphs (it, IT_CONTINUATION);
it->continuation_pixel_width = it->pixel_width;
}
}
/* Reset these values to zero because the produce_special_glyphs
above has changed them. */
it->pixel_width = it->ascent = it->descent = 0;
it->phys_ascent = it->phys_descent = 0;
/* Set this after getting the dimensions of truncation and
continuation glyphs, so that we don't produce glyphs when calling
produce_special_glyphs, above. */
it->glyph_row = row;
it->area = TEXT_AREA;
/* Get the dimensions of the display area. The display area
consists of the visible window area plus a horizontally scrolled
part to the left of the window. All x-values are relative to the
start of this total display area. */
if (base_face_id != DEFAULT_FACE_ID)
{
/* Mode lines, menu bar in terminal frames. */
it->first_visible_x = 0;
it->last_visible_x = WINDOW_PIXEL_WIDTH (w);
}
else
{
it->first_visible_x
= window_hscroll_limited (it->w, it->f) * FRAME_COLUMN_WIDTH (it->f);
it->last_visible_x = (it->first_visible_x
+ window_box_width (w, TEXT_AREA));
/* If we truncate lines, leave room for the truncation glyph(s) at
the right margin. Otherwise, leave room for the continuation
glyph(s). Done only if the window has no right fringe. */
if (WINDOW_RIGHT_FRINGE_WIDTH (it->w) == 0)
{
if (it->line_wrap == TRUNCATE)
it->last_visible_x -= it->truncation_pixel_width;
else
it->last_visible_x -= it->continuation_pixel_width;
}
it->header_line_p = WINDOW_WANTS_HEADER_LINE_P (w);
it->current_y = WINDOW_HEADER_LINE_HEIGHT (w) + w->vscroll;
}
/* Leave room for a border glyph. */
if (!FRAME_WINDOW_P (it->f)
&& !WINDOW_RIGHTMOST_P (it->w))
it->last_visible_x -= 1;
it->last_visible_y = window_text_bottom_y (w);
/* For mode lines and alike, arrange for the first glyph having a
left box line if the face specifies a box. */
if (base_face_id != DEFAULT_FACE_ID)
{
struct face *face;
it->face_id = remapped_base_face_id;
/* If we have a boxed mode line, make the first character appear
with a left box line. */
face = FACE_FROM_ID_OR_NULL (it->f, remapped_base_face_id);
if (face && face->box != FACE_NO_BOX)
it->start_of_box_run_p = true;
}
/* If a buffer position was specified, set the iterator there,
getting overlays and face properties from that position. */
if (charpos >= BUF_BEG (current_buffer))
{
it->stop_charpos = charpos;
it->end_charpos = ZV;
eassert (charpos == BYTE_TO_CHAR (bytepos));
IT_CHARPOS (*it) = charpos;
IT_BYTEPOS (*it) = bytepos;
/* We will rely on `reseat' to set this up properly, via
handle_face_prop. */
it->face_id = it->base_face_id;
it->start = it->current;
/* Do we need to reorder bidirectional text? Not if this is a
unibyte buffer: by definition, none of the single-byte
characters are strong R2L, so no reordering is needed. And
bidi.c doesn't support unibyte buffers anyway. Also, don't
reorder while we are loading loadup.el, since the tables of
character properties needed for reordering are not yet
available. */
it->bidi_p =
!redisplay__inhibit_bidi
&& !NILP (BVAR (current_buffer, bidi_display_reordering))
&& it->multibyte_p;
/* If we are to reorder bidirectional text, init the bidi
iterator. */
if (it->bidi_p)
{
/* Since we don't know at this point whether there will be
any R2L lines in the window, we reserve space for
truncation/continuation glyphs even if only the left
fringe is absent. */
if (base_face_id == DEFAULT_FACE_ID
&& WINDOW_LEFT_FRINGE_WIDTH (it->w) == 0
&& WINDOW_RIGHT_FRINGE_WIDTH (it->w) != 0)
{
if (it->line_wrap == TRUNCATE)
it->last_visible_x -= it->truncation_pixel_width;
else
it->last_visible_x -= it->continuation_pixel_width;
}
/* Note the paragraph direction that this buffer wants to
use. */
if (EQ (BVAR (current_buffer, bidi_paragraph_direction),
Qleft_to_right))
it->paragraph_embedding = L2R;
else if (EQ (BVAR (current_buffer, bidi_paragraph_direction),
Qright_to_left))
it->paragraph_embedding = R2L;
else
it->paragraph_embedding = NEUTRAL_DIR;
bidi_unshelve_cache (NULL, false);
bidi_init_it (charpos, IT_BYTEPOS (*it), FRAME_WINDOW_P (it->f),
&it->bidi_it);
}
/* Compute faces etc. */
reseat (it, it->current.pos, true);
}
CHECK_IT (it);
}
/* Initialize IT for the display of window W with window start POS. */
void
start_display (struct it *it, struct window *w, struct text_pos pos)
{
struct glyph_row *row;
bool first_vpos = WINDOW_WANTS_HEADER_LINE_P (w);
row = w->desired_matrix->rows + first_vpos;
init_iterator (it, w, CHARPOS (pos), BYTEPOS (pos), row, DEFAULT_FACE_ID);
it->first_vpos = first_vpos;
/* Don't reseat to previous visible line start if current start
position is in a string or image. */
if (it->method == GET_FROM_BUFFER && it->line_wrap != TRUNCATE)
{
int first_y = it->current_y;
/* If window start is not at a line start, skip forward to POS to
get the correct continuation lines width. */
bool start_at_line_beg_p = (CHARPOS (pos) == BEGV
|| FETCH_BYTE (BYTEPOS (pos) - 1) == '\n');
if (!start_at_line_beg_p)
{
int new_x;
reseat_at_previous_visible_line_start (it);
move_it_to (it, CHARPOS (pos), -1, -1, -1, MOVE_TO_POS);
new_x = it->current_x + it->pixel_width;
/* If lines are continued, this line may end in the middle
of a multi-glyph character (e.g. a control character
displayed as \003, or in the middle of an overlay
string). In this case move_it_to above will not have
taken us to the start of the continuation line but to the
end of the continued line. */
if (it->current_x > 0
&& it->line_wrap != TRUNCATE /* Lines are continued. */
&& (/* And glyph doesn't fit on the line. */
new_x > it->last_visible_x
/* Or it fits exactly and we're on a window
system frame. */
|| (new_x == it->last_visible_x
&& FRAME_WINDOW_P (it->f)
&& ((it->bidi_p && it->bidi_it.paragraph_dir == R2L)
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)))))
{
if ((it->current.dpvec_index >= 0
|| it->current.overlay_string_index >= 0)
/* If we are on a newline from a display vector or
overlay string, then we are already at the end of
a screen line; no need to go to the next line in
that case, as this line is not really continued.
(If we do go to the next line, C-e will not DTRT.) */
&& it->c != '\n')
{
set_iterator_to_next (it, true);
move_it_in_display_line_to (it, -1, -1, 0);
}
it->continuation_lines_width += it->current_x;
}
/* If the character at POS is displayed via a display
vector, move_it_to above stops at the final glyph of
IT->dpvec. To make the caller redisplay that character
again (a.k.a. start at POS), we need to reset the
dpvec_index to the beginning of IT->dpvec. */
else if (it->current.dpvec_index >= 0)
it->current.dpvec_index = 0;
/* We're starting a new display line, not affected by the
height of the continued line, so clear the appropriate
fields in the iterator structure. */
it->max_ascent = it->max_descent = 0;
it->max_phys_ascent = it->max_phys_descent = 0;
it->current_y = first_y;
it->vpos = 0;
it->current_x = it->hpos = 0;
}
}
}
/* Return true if POS is a position in ellipses displayed for invisible
text. W is the window we display, for text property lookup. */
static bool
in_ellipses_for_invisible_text_p (struct display_pos *pos, struct window *w)
{
Lisp_Object prop, window;
bool ellipses_p = false;
ptrdiff_t charpos = CHARPOS (pos->pos);
/* If POS specifies a position in a display vector, this might
be for an ellipsis displayed for invisible text. We won't
get the iterator set up for delivering that ellipsis unless
we make sure that it gets aware of the invisible text. */
if (pos->dpvec_index >= 0
&& pos->overlay_string_index < 0
&& CHARPOS (pos->string_pos) < 0
&& charpos > BEGV
&& (XSETWINDOW (window, w),
prop = Fget_char_property (make_number (charpos),
Qinvisible, window),
TEXT_PROP_MEANS_INVISIBLE (prop) == 0))
{
prop = Fget_char_property (make_number (charpos - 1), Qinvisible,
window);
ellipses_p = 2 == TEXT_PROP_MEANS_INVISIBLE (prop);
}
return ellipses_p;
}
/* Initialize IT for stepping through current_buffer in window W,
starting at position POS that includes overlay string and display
vector/ control character translation position information. Value
is false if there are overlay strings with newlines at POS. */
static bool
init_from_display_pos (struct it *it, struct window *w, struct display_pos *pos)
{
ptrdiff_t charpos = CHARPOS (pos->pos), bytepos = BYTEPOS (pos->pos);
int i;
bool overlay_strings_with_newlines = false;
/* If POS specifies a position in a display vector, this might
be for an ellipsis displayed for invisible text. We won't
get the iterator set up for delivering that ellipsis unless
we make sure that it gets aware of the invisible text. */
if (in_ellipses_for_invisible_text_p (pos, w))
{
--charpos;
bytepos = 0;
}
/* Keep in mind: the call to reseat in init_iterator skips invisible
text, so we might end up at a position different from POS. This
is only a problem when POS is a row start after a newline and an
overlay starts there with an after-string, and the overlay has an
invisible property. Since we don't skip invisible text in
display_line and elsewhere immediately after consuming the
newline before the row start, such a POS will not be in a string,
but the call to init_iterator below will move us to the
after-string. */
init_iterator (it, w, charpos, bytepos, NULL, DEFAULT_FACE_ID);
/* This only scans the current chunk -- it should scan all chunks.
However, OVERLAY_STRING_CHUNK_SIZE has been increased from 3 in 21.1
to 16 in 22.1 to make this a lesser problem. */
for (i = 0; i < it->n_overlay_strings && i < OVERLAY_STRING_CHUNK_SIZE; ++i)
{
const char *s = SSDATA (it->overlay_strings[i]);
const char *e = s + SBYTES (it->overlay_strings[i]);
while (s < e && *s != '\n')
++s;
if (s < e)
{
overlay_strings_with_newlines = true;
break;
}
}
/* If position is within an overlay string, set up IT to the right
overlay string. */
if (pos->overlay_string_index >= 0)
{
int relative_index;
/* If the first overlay string happens to have a `display'
property for an image, the iterator will be set up for that
image, and we have to undo that setup first before we can
correct the overlay string index. */
if (it->method == GET_FROM_IMAGE)
pop_it (it);
/* We already have the first chunk of overlay strings in
IT->overlay_strings. Load more until the one for
pos->overlay_string_index is in IT->overlay_strings. */
if (pos->overlay_string_index >= OVERLAY_STRING_CHUNK_SIZE)
{
ptrdiff_t n = pos->overlay_string_index / OVERLAY_STRING_CHUNK_SIZE;
it->current.overlay_string_index = 0;
while (n--)
{
load_overlay_strings (it, 0);
it->current.overlay_string_index += OVERLAY_STRING_CHUNK_SIZE;
}
}
it->current.overlay_string_index = pos->overlay_string_index;
relative_index = (it->current.overlay_string_index
% OVERLAY_STRING_CHUNK_SIZE);
it->string = it->overlay_strings[relative_index];
eassert (STRINGP (it->string));
it->current.string_pos = pos->string_pos;
it->method = GET_FROM_STRING;
it->end_charpos = SCHARS (it->string);
/* Set up the bidi iterator for this overlay string. */
if (it->bidi_p)
{
it->bidi_it.string.lstring = it->string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = SCHARS (it->string);
it->bidi_it.string.bufpos = it->overlay_strings_charpos;
it->bidi_it.string.from_disp_str = it->string_from_display_prop_p;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (IT_STRING_CHARPOS (*it), IT_STRING_BYTEPOS (*it),
FRAME_WINDOW_P (it->f), &it->bidi_it);
/* Synchronize the state of the bidi iterator with
pos->string_pos. For any string position other than
zero, this will be done automagically when we resume
iteration over the string and get_visually_first_element
is called. But if string_pos is zero, and the string is
to be reordered for display, we need to resync manually,
since it could be that the iteration state recorded in
pos ended at string_pos of 0 moving backwards in string. */
if (CHARPOS (pos->string_pos) == 0)
{
get_visually_first_element (it);
if (IT_STRING_CHARPOS (*it) != 0)
do {
/* Paranoia. */
eassert (it->bidi_it.charpos < it->bidi_it.string.schars);
bidi_move_to_visually_next (&it->bidi_it);
} while (it->bidi_it.charpos != 0);
}
eassert (IT_STRING_CHARPOS (*it) == it->bidi_it.charpos
&& IT_STRING_BYTEPOS (*it) == it->bidi_it.bytepos);
}
}
if (CHARPOS (pos->string_pos) >= 0)
{
/* Recorded position is not in an overlay string, but in another
string. This can only be a string from a `display' property.
IT should already be filled with that string. */
it->current.string_pos = pos->string_pos;
eassert (STRINGP (it->string));
if (it->bidi_p)
bidi_init_it (IT_STRING_CHARPOS (*it), IT_STRING_BYTEPOS (*it),
FRAME_WINDOW_P (it->f), &it->bidi_it);
}
/* Restore position in display vector translations, control
character translations or ellipses. */
if (pos->dpvec_index >= 0)
{
if (it->dpvec == NULL)
get_next_display_element (it);
eassert (it->dpvec && it->current.dpvec_index == 0);
it->current.dpvec_index = pos->dpvec_index;
}
CHECK_IT (it);
return !overlay_strings_with_newlines;
}
/* Initialize IT for stepping through current_buffer in window W
starting at ROW->start. */
static void
init_to_row_start (struct it *it, struct window *w, struct glyph_row *row)
{
init_from_display_pos (it, w, &row->start);
it->start = row->start;
it->continuation_lines_width = row->continuation_lines_width;
CHECK_IT (it);
}
/* Initialize IT for stepping through current_buffer in window W
starting in the line following ROW, i.e. starting at ROW->end.
Value is false if there are overlay strings with newlines at ROW's
end position. */
static bool
init_to_row_end (struct it *it, struct window *w, struct glyph_row *row)
{
bool success = false;
if (init_from_display_pos (it, w, &row->end))
{
if (row->continued_p)
it->continuation_lines_width
= row->continuation_lines_width + row->pixel_width;
CHECK_IT (it);
success = true;
}
return success;
}
\f
/***********************************************************************
Text properties
***********************************************************************/
/* Called when IT reaches IT->stop_charpos. Handle text property and
overlay changes. Set IT->stop_charpos to the next position where
to stop. */
static void
handle_stop (struct it *it)
{
enum prop_handled handled;
bool handle_overlay_change_p;
struct props *p;
it->dpvec = NULL;
it->current.dpvec_index = -1;
handle_overlay_change_p = !it->ignore_overlay_strings_at_pos_p;
it->ellipsis_p = false;
/* Use face of preceding text for ellipsis (if invisible) */
if (it->selective_display_ellipsis_p)
it->saved_face_id = it->face_id;
/* Here's the description of the semantics of, and the logic behind,
the various HANDLED_* statuses:
HANDLED_NORMALLY means the handler did its job, and the loop
should proceed to calling the next handler in order.
HANDLED_RECOMPUTE_PROPS means the handler caused a significant
change in the properties and overlays at current position, so the
loop should be restarted, to re-invoke the handlers that were
already called. This happens when fontification-functions were
called by handle_fontified_prop, and actually fontified
something. Another case where HANDLED_RECOMPUTE_PROPS is
returned is when we discover overlay strings that need to be
displayed right away. The loop below will continue for as long
as the status is HANDLED_RECOMPUTE_PROPS.
HANDLED_RETURN means return immediately to the caller, to
continue iteration without calling any further handlers. This is
used when we need to act on some property right away, for example
when we need to display the ellipsis or a replacing display
property, such as display string or image.
HANDLED_OVERLAY_STRING_CONSUMED means an overlay string was just
consumed, and the handler switched to the next overlay string.
This signals the loop below to refrain from looking for more
overlays before all the overlay strings of the current overlay
are processed.
Some of the handlers called by the loop push the iterator state
onto the stack (see 'push_it'), and arrange for the iteration to
continue with another object, such as an image, a display string,
or an overlay string. In most such cases, it->stop_charpos is
set to the first character of the string, so that when the
iteration resumes, this function will immediately be called
again, to examine the properties at the beginning of the string.
When a display or overlay string is exhausted, the iterator state
is popped (see 'pop_it'), and iteration continues with the
previous object. Again, in many such cases this function is
called again to find the next position where properties might
change. */
do
{
handled = HANDLED_NORMALLY;
/* Call text property handlers. */
for (p = it_props; p->handler; ++p)
{
handled = p->handler (it);
if (handled == HANDLED_RECOMPUTE_PROPS)
break;
else if (handled == HANDLED_RETURN)
{
/* We still want to show before and after strings from
overlays even if the actual buffer text is replaced. */
if (!handle_overlay_change_p
|| it->sp > 1
/* Don't call get_overlay_strings_1 if we already
have overlay strings loaded, because doing so
will load them again and push the iterator state
onto the stack one more time, which is not
expected by the rest of the code that processes
overlay strings. */
|| (it->current.overlay_string_index < 0
&& !get_overlay_strings_1 (it, 0, false)))
{
if (it->ellipsis_p)
setup_for_ellipsis (it, 0);
/* When handling a display spec, we might load an
empty string. In that case, discard it here. We
used to discard it in handle_single_display_spec,
but that causes get_overlay_strings_1, above, to
ignore overlay strings that we must check. */
if (STRINGP (it->string) && !SCHARS (it->string))
pop_it (it);
return;
}
else if (STRINGP (it->string) && !SCHARS (it->string))
pop_it (it);
else
{
it->string_from_display_prop_p = false;
it->from_disp_prop_p = false;
handle_overlay_change_p = false;
}
handled = HANDLED_RECOMPUTE_PROPS;
break;
}
else if (handled == HANDLED_OVERLAY_STRING_CONSUMED)
handle_overlay_change_p = false;
}
if (handled != HANDLED_RECOMPUTE_PROPS)
{
/* Don't check for overlay strings below when set to deliver
characters from a display vector. */
if (it->method == GET_FROM_DISPLAY_VECTOR)
handle_overlay_change_p = false;
/* Handle overlay changes.
This sets HANDLED to HANDLED_RECOMPUTE_PROPS
if it finds overlays. */
if (handle_overlay_change_p)
handled = handle_overlay_change (it);
}
if (it->ellipsis_p)
{
setup_for_ellipsis (it, 0);
break;
}
}
while (handled == HANDLED_RECOMPUTE_PROPS);
/* Determine where to stop next. */
if (handled == HANDLED_NORMALLY)
compute_stop_pos (it);
}
/* Compute IT->stop_charpos from text property and overlay change
information for IT's current position. */
static void
compute_stop_pos (struct it *it)
{
register INTERVAL iv, next_iv;
Lisp_Object object, limit, position;
ptrdiff_t charpos, bytepos;
if (STRINGP (it->string))
{
/* Strings are usually short, so don't limit the search for
properties. */
it->stop_charpos = it->end_charpos;
object = it->string;
limit = Qnil;
charpos = IT_STRING_CHARPOS (*it);
bytepos = IT_STRING_BYTEPOS (*it);
}
else
{
ptrdiff_t pos;
/* If end_charpos is out of range for some reason, such as a
misbehaving display function, rationalize it (Bug#5984). */
if (it->end_charpos > ZV)
it->end_charpos = ZV;
it->stop_charpos = it->end_charpos;
/* If next overlay change is in front of the current stop pos
(which is IT->end_charpos), stop there. Note: value of
next_overlay_change is point-max if no overlay change
follows. */
charpos = IT_CHARPOS (*it);
bytepos = IT_BYTEPOS (*it);
pos = next_overlay_change (charpos);
if (pos < it->stop_charpos)
it->stop_charpos = pos;
/* Set up variables for computing the stop position from text
property changes. */
XSETBUFFER (object, current_buffer);
limit = make_number (IT_CHARPOS (*it) + TEXT_PROP_DISTANCE_LIMIT);
}
/* Get the interval containing IT's position. Value is a null
interval if there isn't such an interval. */
position = make_number (charpos);
iv = validate_interval_range (object, &position, &position, false);
if (iv)
{
Lisp_Object values_here[LAST_PROP_IDX];
struct props *p;
/* Get properties here. */
for (p = it_props; p->handler; ++p)
values_here[p->idx] = textget (iv->plist,
builtin_lisp_symbol (p->name));
/* Look for an interval following iv that has different
properties. */
for (next_iv = next_interval (iv);
(next_iv
&& (NILP (limit)
|| XFASTINT (limit) > next_iv->position));
next_iv = next_interval (next_iv))
{
for (p = it_props; p->handler; ++p)
{
Lisp_Object new_value = textget (next_iv->plist,
builtin_lisp_symbol (p->name));
if (!EQ (values_here[p->idx], new_value))
break;
}
if (p->handler)
break;
}
if (next_iv)
{
if (INTEGERP (limit)
&& next_iv->position >= XFASTINT (limit))
/* No text property change up to limit. */
it->stop_charpos = min (XFASTINT (limit), it->stop_charpos);
else
/* Text properties change in next_iv. */
it->stop_charpos = min (it->stop_charpos, next_iv->position);
}
}
if (it->cmp_it.id < 0)
{
ptrdiff_t stoppos = it->end_charpos;
if (it->bidi_p && it->bidi_it.scan_dir < 0)
stoppos = -1;
composition_compute_stop_pos (&it->cmp_it, charpos, bytepos,
stoppos, it->string);
}
eassert (STRINGP (it->string)
|| (it->stop_charpos >= BEGV
&& it->stop_charpos >= IT_CHARPOS (*it)));
}
/* Return the position of the next overlay change after POS in
current_buffer. Value is point-max if no overlay change
follows. This is like `next-overlay-change' but doesn't use
xmalloc. */
static ptrdiff_t
next_overlay_change (ptrdiff_t pos)
{
ptrdiff_t i, noverlays;
ptrdiff_t endpos;
Lisp_Object *overlays;
USE_SAFE_ALLOCA;
/* Get all overlays at the given position. */
GET_OVERLAYS_AT (pos, overlays, noverlays, &endpos, true);
/* If any of these overlays ends before endpos,
use its ending point instead. */
for (i = 0; i < noverlays; ++i)
{
Lisp_Object oend;
ptrdiff_t oendpos;
oend = OVERLAY_END (overlays[i]);
oendpos = OVERLAY_POSITION (oend);
endpos = min (endpos, oendpos);
}
SAFE_FREE ();
return endpos;
}
/* How many characters forward to search for a display property or
display string. Searching too far forward makes the bidi display
sluggish, especially in small windows. */
#define MAX_DISP_SCAN 250
/* Return the character position of a display string at or after
position specified by POSITION. If no display string exists at or
after POSITION, return ZV. A display string is either an overlay
with `display' property whose value is a string, or a `display'
text property whose value is a string. STRING is data about the
string to iterate; if STRING->lstring is nil, we are iterating a
buffer. FRAME_WINDOW_P is true when we are displaying a window
on a GUI frame. DISP_PROP is set to zero if we searched
MAX_DISP_SCAN characters forward without finding any display
strings, non-zero otherwise. It is set to 2 if the display string
uses any kind of `(space ...)' spec that will produce a stretch of
white space in the text area. */
ptrdiff_t
compute_display_string_pos (struct text_pos *position,
struct bidi_string_data *string,
struct window *w,
bool frame_window_p, int *disp_prop)
{
/* OBJECT = nil means current buffer. */
Lisp_Object object, object1;
Lisp_Object pos, spec, limpos;
bool string_p = string && (STRINGP (string->lstring) || string->s);
ptrdiff_t eob = string_p ? string->schars : ZV;
ptrdiff_t begb = string_p ? 0 : BEGV;
ptrdiff_t bufpos, charpos = CHARPOS (*position);
ptrdiff_t lim =
(charpos < eob - MAX_DISP_SCAN) ? charpos + MAX_DISP_SCAN : eob;
struct text_pos tpos;
int rv = 0;
if (string && STRINGP (string->lstring))
object1 = object = string->lstring;
else if (w && !string_p)
{
XSETWINDOW (object, w);
object1 = Qnil;
}
else
object1 = object = Qnil;
*disp_prop = 1;
if (charpos >= eob
/* We don't support display properties whose values are strings
that have display string properties. */
|| string->from_disp_str
/* C strings cannot have display properties. */
|| (string->s && !STRINGP (object)))
{
*disp_prop = 0;
return eob;
}
/* If the character at CHARPOS is where the display string begins,
return CHARPOS. */
pos = make_number (charpos);
if (STRINGP (object))
bufpos = string->bufpos;
else
bufpos = charpos;
tpos = *position;
if (!NILP (spec = Fget_char_property (pos, Qdisplay, object))
&& (charpos <= begb
|| !EQ (Fget_char_property (make_number (charpos - 1), Qdisplay,
object),
spec))
&& (rv = handle_display_spec (NULL, spec, object, Qnil, &tpos, bufpos,
frame_window_p)))
{
if (rv == 2)
*disp_prop = 2;
return charpos;
}
/* Look forward for the first character with a `display' property
that will replace the underlying text when displayed. */
limpos = make_number (lim);
do {
pos = Fnext_single_char_property_change (pos, Qdisplay, object1, limpos);
CHARPOS (tpos) = XFASTINT (pos);
if (CHARPOS (tpos) >= lim)
{
*disp_prop = 0;
break;
}
if (STRINGP (object))
BYTEPOS (tpos) = string_char_to_byte (object, CHARPOS (tpos));
else
BYTEPOS (tpos) = CHAR_TO_BYTE (CHARPOS (tpos));
spec = Fget_char_property (pos, Qdisplay, object);
if (!STRINGP (object))
bufpos = CHARPOS (tpos);
} while (NILP (spec)
|| !(rv = handle_display_spec (NULL, spec, object, Qnil, &tpos,
bufpos, frame_window_p)));
if (rv == 2)
*disp_prop = 2;
return CHARPOS (tpos);
}
/* Return the character position of the end of the display string that
started at CHARPOS. If there's no display string at CHARPOS,
return -1. A display string is either an overlay with `display'
property whose value is a string or a `display' text property whose
value is a string. */
ptrdiff_t
compute_display_string_end (ptrdiff_t charpos, struct bidi_string_data *string)
{
/* OBJECT = nil means current buffer. */
Lisp_Object object =
(string && STRINGP (string->lstring)) ? string->lstring : Qnil;
Lisp_Object pos = make_number (charpos);
ptrdiff_t eob =
(STRINGP (object) || (string && string->s)) ? string->schars : ZV;
if (charpos >= eob || (string->s && !STRINGP (object)))
return eob;
/* It could happen that the display property or overlay was removed
since we found it in compute_display_string_pos above. One way
this can happen is if JIT font-lock was called (through
handle_fontified_prop), and jit-lock-functions remove text
properties or overlays from the portion of buffer that includes
CHARPOS. Muse mode is known to do that, for example. In this
case, we return -1 to the caller, to signal that no display
string is actually present at CHARPOS. See bidi_fetch_char for
how this is handled.
An alternative would be to never look for display properties past
it->stop_charpos. But neither compute_display_string_pos nor
bidi_fetch_char that calls it know or care where the next
stop_charpos is. */
if (NILP (Fget_char_property (pos, Qdisplay, object)))
return -1;
/* Look forward for the first character where the `display' property
changes. */
pos = Fnext_single_char_property_change (pos, Qdisplay, object, Qnil);
return XFASTINT (pos);
}
\f
/***********************************************************************
Fontification
***********************************************************************/
/* Handle changes in the `fontified' property of the current buffer by
calling hook functions from Qfontification_functions to fontify
regions of text. */
static enum prop_handled
handle_fontified_prop (struct it *it)
{
Lisp_Object prop, pos;
enum prop_handled handled = HANDLED_NORMALLY;
if (!NILP (Vmemory_full))
return handled;
/* Get the value of the `fontified' property at IT's current buffer
position. (The `fontified' property doesn't have a special
meaning in strings.) If the value is nil, call functions from
Qfontification_functions. */
if (!STRINGP (it->string)
&& it->s == NULL
&& !NILP (Vfontification_functions)
&& !NILP (Vrun_hooks)
&& (pos = make_number (IT_CHARPOS (*it)),
prop = Fget_char_property (pos, Qfontified, Qnil),
/* Ignore the special cased nil value always present at EOB since
no amount of fontifying will be able to change it. */
NILP (prop) && IT_CHARPOS (*it) < Z))
{
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object val;
struct buffer *obuf = current_buffer;
ptrdiff_t begv = BEGV, zv = ZV;
bool old_clip_changed = current_buffer->clip_changed;
val = Vfontification_functions;
specbind (Qfontification_functions, Qnil);
eassert (it->end_charpos == ZV);
if (!CONSP (val) || EQ (XCAR (val), Qlambda))
safe_call1 (val, pos);
else
{
Lisp_Object fns, fn;
fns = Qnil;
for (; CONSP (val); val = XCDR (val))
{
fn = XCAR (val);
if (EQ (fn, Qt))
{
/* A value of t indicates this hook has a local
binding; it means to run the global binding too.
In a global value, t should not occur. If it
does, we must ignore it to avoid an endless
loop. */
for (fns = Fdefault_value (Qfontification_functions);
CONSP (fns);
fns = XCDR (fns))
{
fn = XCAR (fns);
if (!EQ (fn, Qt))
safe_call1 (fn, pos);
}
}
else
safe_call1 (fn, pos);
}
}
unbind_to (count, Qnil);
/* Fontification functions routinely call `save-restriction'.
Normally, this tags clip_changed, which can confuse redisplay
(see discussion in Bug#6671). Since we don't perform any
special handling of fontification changes in the case where
`save-restriction' isn't called, there's no point doing so in
this case either. So, if the buffer's restrictions are
actually left unchanged, reset clip_changed. */
if (obuf == current_buffer)
{
if (begv == BEGV && zv == ZV)
current_buffer->clip_changed = old_clip_changed;
}
/* There isn't much we can reasonably do to protect against
misbehaving fontification, but here's a fig leaf. */
else if (BUFFER_LIVE_P (obuf))
set_buffer_internal_1 (obuf);
/* The fontification code may have added/removed text.
It could do even a lot worse, but let's at least protect against
the most obvious case where only the text past `pos' gets changed',
as is/was done in grep.el where some escapes sequences are turned
into face properties (bug#7876). */
it->end_charpos = ZV;
/* Return HANDLED_RECOMPUTE_PROPS only if function fontified
something. This avoids an endless loop if they failed to
fontify the text for which reason ever. */
if (!NILP (Fget_char_property (pos, Qfontified, Qnil)))
handled = HANDLED_RECOMPUTE_PROPS;
}
return handled;
}
\f
/***********************************************************************
Faces
***********************************************************************/
/* Set up iterator IT from face properties at its current position.
Called from handle_stop. */
static enum prop_handled
handle_face_prop (struct it *it)
{
int new_face_id;
ptrdiff_t next_stop;
if (!STRINGP (it->string))
{
new_face_id
= face_at_buffer_position (it->w,
IT_CHARPOS (*it),
&next_stop,
(IT_CHARPOS (*it)
+ TEXT_PROP_DISTANCE_LIMIT),
false, it->base_face_id);
/* Is this a start of a run of characters with box face?
Caveat: this can be called for a freshly initialized
iterator; face_id is -1 in this case. We know that the new
face will not change until limit, i.e. if the new face has a
box, all characters up to limit will have one. But, as
usual, we don't know whether limit is really the end. */
if (new_face_id != it->face_id)
{
struct face *new_face = FACE_FROM_ID (it->f, new_face_id);
/* If it->face_id is -1, old_face below will be NULL, see
the definition of FACE_FROM_ID_OR_NULL. This will happen
if this is the initial call that gets the face. */
struct face *old_face = FACE_FROM_ID_OR_NULL (it->f, it->face_id);
/* If the value of face_id of the iterator is -1, we have to
look in front of IT's position and see whether there is a
face there that's different from new_face_id. */
if (!old_face && IT_CHARPOS (*it) > BEG)
{
int prev_face_id = face_before_it_pos (it);
old_face = FACE_FROM_ID_OR_NULL (it->f, prev_face_id);
}
/* If the new face has a box, but the old face does not,
this is the start of a run of characters with box face,
i.e. this character has a shadow on the left side. */
it->start_of_box_run_p = (new_face->box != FACE_NO_BOX
&& (old_face == NULL || !old_face->box));
it->face_box_p = new_face->box != FACE_NO_BOX;
}
}
else
{
int base_face_id;
ptrdiff_t bufpos;
int i;
Lisp_Object from_overlay
= (it->current.overlay_string_index >= 0
? it->string_overlays[it->current.overlay_string_index
% OVERLAY_STRING_CHUNK_SIZE]
: Qnil);
/* See if we got to this string directly or indirectly from
an overlay property. That includes the before-string or
after-string of an overlay, strings in display properties
provided by an overlay, their text properties, etc.
FROM_OVERLAY is the overlay that brought us here, or nil if none. */
if (! NILP (from_overlay))
for (i = it->sp - 1; i >= 0; i--)
{
if (it->stack[i].current.overlay_string_index >= 0)
from_overlay
= it->string_overlays[it->stack[i].current.overlay_string_index
% OVERLAY_STRING_CHUNK_SIZE];
else if (! NILP (it->stack[i].from_overlay))
from_overlay = it->stack[i].from_overlay;
if (!NILP (from_overlay))
break;
}
if (! NILP (from_overlay))
{
bufpos = IT_CHARPOS (*it);
/* For a string from an overlay, the base face depends
only on text properties and ignores overlays. */
base_face_id
= face_for_overlay_string (it->w,
IT_CHARPOS (*it),
&next_stop,
(IT_CHARPOS (*it)
+ TEXT_PROP_DISTANCE_LIMIT),
false,
from_overlay);
}
else
{
bufpos = 0;
/* For strings from a `display' property, use the face at
IT's current buffer position as the base face to merge
with, so that overlay strings appear in the same face as
surrounding text, unless they specify their own faces.
For strings from wrap-prefix and line-prefix properties,
use the default face, possibly remapped via
Vface_remapping_alist. */
/* Note that the fact that we use the face at _buffer_
position means that a 'display' property on an overlay
string will not inherit the face of that overlay string,
but will instead revert to the face of buffer text
covered by the overlay. This is visible, e.g., when the
overlay specifies a box face, but neither the buffer nor
the display string do. This sounds like a design bug,
but Emacs always did that since v21.1, so changing that
might be a big deal. */
base_face_id = it->string_from_prefix_prop_p
? (!NILP (Vface_remapping_alist)
? lookup_basic_face (it->f, DEFAULT_FACE_ID)
: DEFAULT_FACE_ID)
: underlying_face_id (it);
}
new_face_id = face_at_string_position (it->w,
it->string,
IT_STRING_CHARPOS (*it),
bufpos,
&next_stop,
base_face_id, false);
/* Is this a start of a run of characters with box? Caveat:
this can be called for a freshly allocated iterator; face_id
is -1 is this case. We know that the new face will not
change until the next check pos, i.e. if the new face has a
box, all characters up to that position will have a
box. But, as usual, we don't know whether that position
is really the end. */
if (new_face_id != it->face_id)
{
struct face *new_face = FACE_FROM_ID (it->f, new_face_id);
struct face *old_face = FACE_FROM_ID_OR_NULL (it->f, it->face_id);
/* If new face has a box but old face hasn't, this is the
start of a run of characters with box, i.e. it has a
shadow on the left side. */
it->start_of_box_run_p
= new_face->box && (old_face == NULL || !old_face->box);
it->face_box_p = new_face->box != FACE_NO_BOX;
}
}
it->face_id = new_face_id;
return HANDLED_NORMALLY;
}
/* Return the ID of the face ``underlying'' IT's current position,
which is in a string. If the iterator is associated with a
buffer, return the face at IT's current buffer position.
Otherwise, use the iterator's base_face_id. */
static int
underlying_face_id (struct it *it)
{
int face_id = it->base_face_id, i;
eassert (STRINGP (it->string));
for (i = it->sp - 1; i >= 0; --i)
if (NILP (it->stack[i].string))
face_id = it->stack[i].face_id;
return face_id;
}
/* Compute the face one character before or after the current position
of IT, in the visual order. BEFORE_P means get the face
in front (to the left in L2R paragraphs, to the right in R2L
paragraphs) of IT's screen position. Value is the ID of the face. */
static int
face_before_or_after_it_pos (struct it *it, bool before_p)
{
int face_id, limit;
ptrdiff_t next_check_charpos;
struct it it_copy;
void *it_copy_data = NULL;
eassert (it->s == NULL);
if (STRINGP (it->string))
{
ptrdiff_t bufpos, charpos;
int base_face_id;
/* No face change past the end of the string (for the case
we are padding with spaces). No face change before the
string start. */
if (IT_STRING_CHARPOS (*it) >= SCHARS (it->string)
|| (IT_STRING_CHARPOS (*it) == 0 && before_p))
return it->face_id;
if (!it->bidi_p)
{
/* Set charpos to the position before or after IT's current
position, in the logical order, which in the non-bidi
case is the same as the visual order. */
if (before_p)
charpos = IT_STRING_CHARPOS (*it) - 1;
else if (it->what == IT_COMPOSITION)
/* For composition, we must check the character after the
composition. */
charpos = IT_STRING_CHARPOS (*it) + it->cmp_it.nchars;
else
charpos = IT_STRING_CHARPOS (*it) + 1;
}
else
{
if (before_p)
{
/* With bidi iteration, the character before the current
in the visual order cannot be found by simple
iteration, because "reverse" reordering is not
supported. Instead, we need to start from the string
beginning and go all the way to the current string
position, remembering the previous position. */
/* Ignore face changes before the first visible
character on this display line. */
if (it->current_x <= it->first_visible_x)
return it->face_id;
SAVE_IT (it_copy, *it, it_copy_data);
IT_STRING_CHARPOS (it_copy) = 0;
bidi_init_it (0, 0, FRAME_WINDOW_P (it_copy.f), &it_copy.bidi_it);
do
{
charpos = IT_STRING_CHARPOS (it_copy);
if (charpos >= SCHARS (it->string))
break;
bidi_move_to_visually_next (&it_copy.bidi_it);
}
while (IT_STRING_CHARPOS (it_copy) != IT_STRING_CHARPOS (*it));
RESTORE_IT (it, it, it_copy_data);
}
else
{
/* Set charpos to the string position of the character
that comes after IT's current position in the visual
order. */
int n = (it->what == IT_COMPOSITION ? it->cmp_it.nchars : 1);
it_copy = *it;
while (n--)
bidi_move_to_visually_next (&it_copy.bidi_it);
charpos = it_copy.bidi_it.charpos;
}
}
eassert (0 <= charpos && charpos <= SCHARS (it->string));
if (it->current.overlay_string_index >= 0)
bufpos = IT_CHARPOS (*it);
else
bufpos = 0;
base_face_id = underlying_face_id (it);
/* Get the face for ASCII, or unibyte. */
face_id = face_at_string_position (it->w,
it->string,
charpos,
bufpos,
&next_check_charpos,
base_face_id, false);
/* Correct the face for charsets different from ASCII. Do it
for the multibyte case only. The face returned above is
suitable for unibyte text if IT->string is unibyte. */
if (STRING_MULTIBYTE (it->string))
{
struct text_pos pos1 = string_pos (charpos, it->string);
const unsigned char *p = SDATA (it->string) + BYTEPOS (pos1);
int c, len;
struct face *face = FACE_FROM_ID (it->f, face_id);
c = string_char_and_length (p, &len);
face_id = FACE_FOR_CHAR (it->f, face, c, charpos, it->string);
}
}
else
{
struct text_pos pos;
if ((IT_CHARPOS (*it) >= ZV && !before_p)
|| (IT_CHARPOS (*it) <= BEGV && before_p))
return it->face_id;
limit = IT_CHARPOS (*it) + TEXT_PROP_DISTANCE_LIMIT;
pos = it->current.pos;
if (!it->bidi_p)
{
if (before_p)
DEC_TEXT_POS (pos, it->multibyte_p);
else
{
if (it->what == IT_COMPOSITION)
{
/* For composition, we must check the position after
the composition. */
pos.charpos += it->cmp_it.nchars;
pos.bytepos += it->len;
}
else
INC_TEXT_POS (pos, it->multibyte_p);
}
}
else
{
if (before_p)
{
int current_x;
/* With bidi iteration, the character before the current
in the visual order cannot be found by simple
iteration, because "reverse" reordering is not
supported. Instead, we need to use the move_it_*
family of functions, and move to the previous
character starting from the beginning of the visual
line. */
/* Ignore face changes before the first visible
character on this display line. */
if (it->current_x <= it->first_visible_x)
return it->face_id;
SAVE_IT (it_copy, *it, it_copy_data);
/* Implementation note: Since move_it_in_display_line
works in the iterator geometry, and thinks the first
character is always the leftmost, even in R2L lines,
we don't need to distinguish between the R2L and L2R
cases here. */
current_x = it_copy.current_x;
move_it_vertically_backward (&it_copy, 0);
move_it_in_display_line (&it_copy, ZV, current_x - 1, MOVE_TO_X);
pos = it_copy.current.pos;
RESTORE_IT (it, it, it_copy_data);
}
else
{
/* Set charpos to the buffer position of the character
that comes after IT's current position in the visual
order. */
int n = (it->what == IT_COMPOSITION ? it->cmp_it.nchars : 1);
it_copy = *it;
while (n--)
bidi_move_to_visually_next (&it_copy.bidi_it);
SET_TEXT_POS (pos,
it_copy.bidi_it.charpos, it_copy.bidi_it.bytepos);
}
}
eassert (BEGV <= CHARPOS (pos) && CHARPOS (pos) <= ZV);
/* Determine face for CHARSET_ASCII, or unibyte. */
face_id = face_at_buffer_position (it->w,
CHARPOS (pos),
&next_check_charpos,
limit, false, -1);
/* Correct the face for charsets different from ASCII. Do it
for the multibyte case only. The face returned above is
suitable for unibyte text if current_buffer is unibyte. */
if (it->multibyte_p)
{
int c = FETCH_MULTIBYTE_CHAR (BYTEPOS (pos));
struct face *face = FACE_FROM_ID (it->f, face_id);
face_id = FACE_FOR_CHAR (it->f, face, c, CHARPOS (pos), Qnil);
}
}
return face_id;
}
\f
/***********************************************************************
Invisible text
***********************************************************************/
/* Set up iterator IT from invisible properties at its current
position. Called from handle_stop. */
static enum prop_handled
handle_invisible_prop (struct it *it)
{
enum prop_handled handled = HANDLED_NORMALLY;
int invis;
Lisp_Object prop;
if (STRINGP (it->string))
{
Lisp_Object end_charpos, limit;
/* Get the value of the invisible text property at the
current position. Value will be nil if there is no such
property. */
end_charpos = make_number (IT_STRING_CHARPOS (*it));
prop = Fget_text_property (end_charpos, Qinvisible, it->string);
invis = TEXT_PROP_MEANS_INVISIBLE (prop);
if (invis != 0 && IT_STRING_CHARPOS (*it) < it->end_charpos)
{
/* Record whether we have to display an ellipsis for the
invisible text. */
bool display_ellipsis_p = (invis == 2);
ptrdiff_t len, endpos;
handled = HANDLED_RECOMPUTE_PROPS;
/* Get the position at which the next visible text can be
found in IT->string, if any. */
endpos = len = SCHARS (it->string);
XSETINT (limit, len);
do
{
end_charpos
= Fnext_single_property_change (end_charpos, Qinvisible,
it->string, limit);
/* Since LIMIT is always an integer, so should be the
value returned by Fnext_single_property_change. */
eassert (INTEGERP (end_charpos));
if (INTEGERP (end_charpos))
{
endpos = XFASTINT (end_charpos);
prop = Fget_text_property (end_charpos, Qinvisible, it->string);
invis = TEXT_PROP_MEANS_INVISIBLE (prop);
if (invis == 2)
display_ellipsis_p = true;
}
else /* Should never happen; but if it does, exit the loop. */
endpos = len;
}
while (invis != 0 && endpos < len);
if (display_ellipsis_p)
it->ellipsis_p = true;
if (endpos < len)
{
/* Text at END_CHARPOS is visible. Move IT there. */
struct text_pos old;
ptrdiff_t oldpos;
old = it->current.string_pos;
oldpos = CHARPOS (old);
if (it->bidi_p)
{
if (it->bidi_it.first_elt
&& it->bidi_it.charpos < SCHARS (it->string))
bidi_paragraph_init (it->paragraph_embedding,
&it->bidi_it, true);
/* Bidi-iterate out of the invisible text. */
do
{
bidi_move_to_visually_next (&it->bidi_it);
}
while (oldpos <= it->bidi_it.charpos
&& it->bidi_it.charpos < endpos);
IT_STRING_CHARPOS (*it) = it->bidi_it.charpos;
IT_STRING_BYTEPOS (*it) = it->bidi_it.bytepos;
if (IT_CHARPOS (*it) >= endpos)
it->prev_stop = endpos;
}
else
{
IT_STRING_CHARPOS (*it) = endpos;
compute_string_pos (&it->current.string_pos, old, it->string);
}
}
else
{
/* The rest of the string is invisible. If this is an
overlay string, proceed with the next overlay string
or whatever comes and return a character from there. */
if (it->current.overlay_string_index >= 0
&& !display_ellipsis_p)
{
next_overlay_string (it);
/* Don't check for overlay strings when we just
finished processing them. */
handled = HANDLED_OVERLAY_STRING_CONSUMED;
}
else
{
IT_STRING_CHARPOS (*it) = SCHARS (it->string);
IT_STRING_BYTEPOS (*it) = SBYTES (it->string);
}
}
}
}
else
{
ptrdiff_t newpos, next_stop, start_charpos, tem;
Lisp_Object pos, overlay;
/* First of all, is there invisible text at this position? */
tem = start_charpos = IT_CHARPOS (*it);
pos = make_number (tem);
prop = get_char_property_and_overlay (pos, Qinvisible, it->window,
&overlay);
invis = TEXT_PROP_MEANS_INVISIBLE (prop);
/* If we are on invisible text, skip over it. */
if (invis != 0 && start_charpos < it->end_charpos)
{
/* Record whether we have to display an ellipsis for the
invisible text. */
bool display_ellipsis_p = invis == 2;
handled = HANDLED_RECOMPUTE_PROPS;
/* Loop skipping over invisible text. The loop is left at
ZV or with IT on the first char being visible again. */
do
{
/* Try to skip some invisible text. Return value is the
position reached which can be equal to where we start
if there is nothing invisible there. This skips both
over invisible text properties and overlays with
invisible property. */
newpos = skip_invisible (tem, &next_stop, ZV, it->window);
/* If we skipped nothing at all we weren't at invisible
text in the first place. If everything to the end of
the buffer was skipped, end the loop. */
if (newpos == tem || newpos >= ZV)
invis = 0;
else
{
/* We skipped some characters but not necessarily
all there are. Check if we ended up on visible
text. Fget_char_property returns the property of
the char before the given position, i.e. if we
get invis = 0, this means that the char at
newpos is visible. */
pos = make_number (newpos);
prop = Fget_char_property (pos, Qinvisible, it->window);
invis = TEXT_PROP_MEANS_INVISIBLE (prop);
}
/* If we ended up on invisible text, proceed to
skip starting with next_stop. */
if (invis != 0)
tem = next_stop;
/* If there are adjacent invisible texts, don't lose the
second one's ellipsis. */
if (invis == 2)
display_ellipsis_p = true;
}
while (invis != 0);
/* The position newpos is now either ZV or on visible text. */
if (it->bidi_p)
{
ptrdiff_t bpos = CHAR_TO_BYTE (newpos);
bool on_newline
= bpos == ZV_BYTE || FETCH_BYTE (bpos) == '\n';
bool after_newline
= newpos <= BEGV || FETCH_BYTE (bpos - 1) == '\n';
/* If the invisible text ends on a newline or on a
character after a newline, we can avoid the costly,
character by character, bidi iteration to NEWPOS, and
instead simply reseat the iterator there. That's
because all bidi reordering information is tossed at
the newline. This is a big win for modes that hide
complete lines, like Outline, Org, etc. */
if (on_newline || after_newline)
{
struct text_pos tpos;
bidi_dir_t pdir = it->bidi_it.paragraph_dir;
SET_TEXT_POS (tpos, newpos, bpos);
reseat_1 (it, tpos, false);
/* If we reseat on a newline/ZV, we need to prep the
bidi iterator for advancing to the next character
after the newline/EOB, keeping the current paragraph
direction (so that PRODUCE_GLYPHS does TRT wrt
prepending/appending glyphs to a glyph row). */
if (on_newline)
{
it->bidi_it.first_elt = false;
it->bidi_it.paragraph_dir = pdir;
it->bidi_it.ch = (bpos == ZV_BYTE) ? -1 : '\n';
it->bidi_it.nchars = 1;
it->bidi_it.ch_len = 1;
}
}
else /* Must use the slow method. */
{
/* With bidi iteration, the region of invisible text
could start and/or end in the middle of a
non-base embedding level. Therefore, we need to
skip invisible text using the bidi iterator,
starting at IT's current position, until we find
ourselves outside of the invisible text.
Skipping invisible text _after_ bidi iteration
avoids affecting the visual order of the
displayed text when invisible properties are
added or removed. */
if (it->bidi_it.first_elt && it->bidi_it.charpos < ZV)
{
/* If we were `reseat'ed to a new paragraph,
determine the paragraph base direction. We
need to do it now because
next_element_from_buffer may not have a
chance to do it, if we are going to skip any
text at the beginning, which resets the
FIRST_ELT flag. */
bidi_paragraph_init (it->paragraph_embedding,
&it->bidi_it, true);
}
do
{
bidi_move_to_visually_next (&it->bidi_it);
}
while (it->stop_charpos <= it->bidi_it.charpos
&& it->bidi_it.charpos < newpos);
IT_CHARPOS (*it) = it->bidi_it.charpos;
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
/* If we overstepped NEWPOS, record its position in
the iterator, so that we skip invisible text if
later the bidi iteration lands us in the
invisible region again. */
if (IT_CHARPOS (*it) >= newpos)
it->prev_stop = newpos;
}
}
else
{
IT_CHARPOS (*it) = newpos;
IT_BYTEPOS (*it) = CHAR_TO_BYTE (newpos);
}
if (display_ellipsis_p)
{
/* Make sure that the glyphs of the ellipsis will get
correct `charpos' values. If we would not update
it->position here, the glyphs would belong to the
last visible character _before_ the invisible
text, which confuses `set_cursor_from_row'.
We use the last invisible position instead of the
first because this way the cursor is always drawn on
the first "." of the ellipsis, whenever PT is inside
the invisible text. Otherwise the cursor would be
placed _after_ the ellipsis when the point is after the
first invisible character. */
if (!STRINGP (it->object))
{
it->position.charpos = newpos - 1;
it->position.bytepos = CHAR_TO_BYTE (it->position.charpos);
}
}
/* If there are before-strings at the start of invisible
text, and the text is invisible because of a text
property, arrange to show before-strings because 20.x did
it that way. (If the text is invisible because of an
overlay property instead of a text property, this is
already handled in the overlay code.) */
if (NILP (overlay)
&& get_overlay_strings (it, it->stop_charpos))
{
handled = HANDLED_RECOMPUTE_PROPS;
if (it->sp > 0)
{
it->stack[it->sp - 1].display_ellipsis_p = display_ellipsis_p;
/* The call to get_overlay_strings above recomputes
it->stop_charpos, but it only considers changes
in properties and overlays beyond iterator's
current position. This causes us to miss changes
that happen exactly where the invisible property
ended. So we play it safe here and force the
iterator to check for potential stop positions
immediately after the invisible text. Note that
if get_overlay_strings returns true, it
normally also pushed the iterator stack, so we
need to update the stop position in the slot
below the current one. */
it->stack[it->sp - 1].stop_charpos
= CHARPOS (it->stack[it->sp - 1].current.pos);
}
}
else if (display_ellipsis_p)
{
it->ellipsis_p = true;
/* Let the ellipsis display before
considering any properties of the following char.
Fixes jasonr@gnu.org 01 Oct 07 bug. */
handled = HANDLED_RETURN;
}
}
}
return handled;
}
/* Make iterator IT return `...' next.
Replaces LEN characters from buffer. */
static void
setup_for_ellipsis (struct it *it, int len)
{
/* Use the display table definition for `...'. Invalid glyphs
will be handled by the method returning elements from dpvec. */
if (it->dp && VECTORP (DISP_INVIS_VECTOR (it->dp)))
{
struct Lisp_Vector *v = XVECTOR (DISP_INVIS_VECTOR (it->dp));
it->dpvec = v->contents;
it->dpend = v->contents + v->header.size;
}
else
{
/* Default `...'. */
it->dpvec = default_invis_vector;
it->dpend = default_invis_vector + 3;
}
it->dpvec_char_len = len;
it->current.dpvec_index = 0;
it->dpvec_face_id = -1;
/* Use IT->saved_face_id for the ellipsis, so that it has the same
face as the preceding text. IT->saved_face_id was set in
handle_stop to the face of the preceding character, and will be
different from IT->face_id only if the invisible text skipped in
handle_invisible_prop has some non-default face on its first
character. We thus ignore the face of the invisible text when we
display the ellipsis. IT's face is restored in set_iterator_to_next. */
if (it->saved_face_id >= 0)
it->face_id = it->saved_face_id;
/* If the ellipsis represents buffer text, it means we advanced in
the buffer, so we should no longer ignore overlay strings. */
if (it->method == GET_FROM_BUFFER)
it->ignore_overlay_strings_at_pos_p = false;
it->method = GET_FROM_DISPLAY_VECTOR;
it->ellipsis_p = true;
}
\f
/***********************************************************************
'display' property
***********************************************************************/
/* Set up iterator IT from `display' property at its current position.
Called from handle_stop.
We return HANDLED_RETURN if some part of the display property
overrides the display of the buffer text itself.
Otherwise we return HANDLED_NORMALLY. */
static enum prop_handled
handle_display_prop (struct it *it)
{
Lisp_Object propval, object, overlay;
struct text_pos *position;
ptrdiff_t bufpos;
/* Nonzero if some property replaces the display of the text itself. */
int display_replaced = 0;
if (STRINGP (it->string))
{
object = it->string;
position = &it->current.string_pos;
bufpos = CHARPOS (it->current.pos);
}
else
{
XSETWINDOW (object, it->w);
position = &it->current.pos;
bufpos = CHARPOS (*position);
}
/* Reset those iterator values set from display property values. */
it->slice.x = it->slice.y = it->slice.width = it->slice.height = Qnil;
it->space_width = Qnil;
it->font_height = Qnil;
it->voffset = 0;
/* We don't support recursive `display' properties, i.e. string
values that have a string `display' property, that have a string
`display' property etc. */
if (!it->string_from_display_prop_p)
it->area = TEXT_AREA;
propval = get_char_property_and_overlay (make_number (position->charpos),
Qdisplay, object, &overlay);
if (NILP (propval))
return HANDLED_NORMALLY;
/* Now OVERLAY is the overlay that gave us this property, or nil
if it was a text property. */
if (!STRINGP (it->string))
object = it->w->contents;
display_replaced = handle_display_spec (it, propval, object, overlay,
position, bufpos,
FRAME_WINDOW_P (it->f));
return display_replaced != 0 ? HANDLED_RETURN : HANDLED_NORMALLY;
}
/* Subroutine of handle_display_prop. Returns non-zero if the display
specification in SPEC is a replacing specification, i.e. it would
replace the text covered by `display' property with something else,
such as an image or a display string. If SPEC includes any kind or
`(space ...) specification, the value is 2; this is used by
compute_display_string_pos, which see.
See handle_single_display_spec for documentation of arguments.
FRAME_WINDOW_P is true if the window being redisplayed is on a
GUI frame; this argument is used only if IT is NULL, see below.
IT can be NULL, if this is called by the bidi reordering code
through compute_display_string_pos, which see. In that case, this
function only examines SPEC, but does not otherwise "handle" it, in
the sense that it doesn't set up members of IT from the display
spec. */
static int
handle_display_spec (struct it *it, Lisp_Object spec, Lisp_Object object,
Lisp_Object overlay, struct text_pos *position,
ptrdiff_t bufpos, bool frame_window_p)
{
int replacing = 0;
if (CONSP (spec)
/* Simple specifications. */
&& !EQ (XCAR (spec), Qimage)
#ifdef HAVE_XWIDGETS
&& !EQ (XCAR (spec), Qxwidget)
#endif
&& !EQ (XCAR (spec), Qspace)
&& !EQ (XCAR (spec), Qwhen)
&& !EQ (XCAR (spec), Qslice)
&& !EQ (XCAR (spec), Qspace_width)
&& !EQ (XCAR (spec), Qheight)
&& !EQ (XCAR (spec), Qraise)
/* Marginal area specifications. */
&& !(CONSP (XCAR (spec)) && EQ (XCAR (XCAR (spec)), Qmargin))
&& !EQ (XCAR (spec), Qleft_fringe)
&& !EQ (XCAR (spec), Qright_fringe)
&& !NILP (XCAR (spec)))
{
for (; CONSP (spec); spec = XCDR (spec))
{
int rv = handle_single_display_spec (it, XCAR (spec), object,
overlay, position, bufpos,
replacing, frame_window_p);
if (rv != 0)
{
replacing = rv;
/* If some text in a string is replaced, `position' no
longer points to the position of `object'. */
if (!it || STRINGP (object))
break;
}
}
}
else if (VECTORP (spec))
{
ptrdiff_t i;
for (i = 0; i < ASIZE (spec); ++i)
{
int rv = handle_single_display_spec (it, AREF (spec, i), object,
overlay, position, bufpos,
replacing, frame_window_p);
if (rv != 0)
{
replacing = rv;
/* If some text in a string is replaced, `position' no
longer points to the position of `object'. */
if (!it || STRINGP (object))
break;
}
}
}
else
replacing = handle_single_display_spec (it, spec, object, overlay, position,
bufpos, 0, frame_window_p);
return replacing;
}
/* Value is the position of the end of the `display' property starting
at START_POS in OBJECT. */
static struct text_pos
display_prop_end (struct it *it, Lisp_Object object, struct text_pos start_pos)
{
Lisp_Object end;
struct text_pos end_pos;
end = Fnext_single_char_property_change (make_number (CHARPOS (start_pos)),
Qdisplay, object, Qnil);
CHARPOS (end_pos) = XFASTINT (end);
if (STRINGP (object))
compute_string_pos (&end_pos, start_pos, it->string);
else
BYTEPOS (end_pos) = CHAR_TO_BYTE (XFASTINT (end));
return end_pos;
}
/* Set up IT from a single `display' property specification SPEC. OBJECT
is the object in which the `display' property was found. *POSITION
is the position in OBJECT at which the `display' property was found.
BUFPOS is the buffer position of OBJECT (different from POSITION if
OBJECT is not a buffer). DISPLAY_REPLACED non-zero means that we
previously saw a display specification which already replaced text
display with something else, for example an image; we ignore such
properties after the first one has been processed.
OVERLAY is the overlay this `display' property came from,
or nil if it was a text property.
If SPEC is a `space' or `image' specification, and in some other
cases too, set *POSITION to the position where the `display'
property ends.
If IT is NULL, only examine the property specification in SPEC, but
don't set up IT. In that case, FRAME_WINDOW_P means SPEC
is intended to be displayed in a window on a GUI frame.
Value is non-zero if something was found which replaces the display
of buffer or string text. */
static int
handle_single_display_spec (struct it *it, Lisp_Object spec, Lisp_Object object,
Lisp_Object overlay, struct text_pos *position,
ptrdiff_t bufpos, int display_replaced,
bool frame_window_p)
{
Lisp_Object form;
Lisp_Object location, value;
struct text_pos start_pos = *position;
/* If SPEC is a list of the form `(when FORM . VALUE)', evaluate FORM.
If the result is non-nil, use VALUE instead of SPEC. */
form = Qt;
if (CONSP (spec) && EQ (XCAR (spec), Qwhen))
{
spec = XCDR (spec);
if (!CONSP (spec))
return 0;
form = XCAR (spec);
spec = XCDR (spec);
}
if (!NILP (form) && !EQ (form, Qt))
{
ptrdiff_t count = SPECPDL_INDEX ();
/* Bind `object' to the object having the `display' property, a
buffer or string. Bind `position' to the position in the
object where the property was found, and `buffer-position'
to the current position in the buffer. */
if (NILP (object))
XSETBUFFER (object, current_buffer);
specbind (Qobject, object);
specbind (Qposition, make_number (CHARPOS (*position)));
specbind (Qbuffer_position, make_number (bufpos));
form = safe_eval (form);
unbind_to (count, Qnil);
}
if (NILP (form))
return 0;
/* Handle `(height HEIGHT)' specifications. */
if (CONSP (spec)
&& EQ (XCAR (spec), Qheight)
&& CONSP (XCDR (spec)))
{
if (it)
{
if (!FRAME_WINDOW_P (it->f))
return 0;
it->font_height = XCAR (XCDR (spec));
if (!NILP (it->font_height))
{
int new_height = -1;
if (CONSP (it->font_height)
&& (EQ (XCAR (it->font_height), Qplus)
|| EQ (XCAR (it->font_height), Qminus))
&& CONSP (XCDR (it->font_height))
&& RANGED_INTEGERP (0, XCAR (XCDR (it->font_height)), INT_MAX))
{
/* `(+ N)' or `(- N)' where N is an integer. */
int steps = XINT (XCAR (XCDR (it->font_height)));
if (EQ (XCAR (it->font_height), Qplus))
steps = - steps;
it->face_id = smaller_face (it->f, it->face_id, steps);
}
else if (FUNCTIONP (it->font_height))
{
/* Call function with current height as argument.
Value is the new height. */
struct face *face = FACE_FROM_ID (it->f, it->face_id);
Lisp_Object height;
height = safe_call1 (it->font_height,
face->lface[LFACE_HEIGHT_INDEX]);
if (NUMBERP (height))
new_height = XFLOATINT (height);
}
else if (NUMBERP (it->font_height))
{
/* Value is a multiple of the canonical char height. */
struct face *f;
f = FACE_FROM_ID (it->f,
lookup_basic_face (it->f, DEFAULT_FACE_ID));
new_height = (XFLOATINT (it->font_height)
* XINT (f->lface[LFACE_HEIGHT_INDEX]));
}
else
{
/* Evaluate IT->font_height with `height' bound to the
current specified height to get the new height. */
ptrdiff_t count = SPECPDL_INDEX ();
struct face *face = FACE_FROM_ID (it->f, it->face_id);
specbind (Qheight, face->lface[LFACE_HEIGHT_INDEX]);
value = safe_eval (it->font_height);
unbind_to (count, Qnil);
if (NUMBERP (value))
new_height = XFLOATINT (value);
}
if (new_height > 0)
it->face_id = face_with_height (it->f, it->face_id, new_height);
}
}
return 0;
}
/* Handle `(space-width WIDTH)'. */
if (CONSP (spec)
&& EQ (XCAR (spec), Qspace_width)
&& CONSP (XCDR (spec)))
{
if (it)
{
if (!FRAME_WINDOW_P (it->f))
return 0;
value = XCAR (XCDR (spec));
if (NUMBERP (value) && XFLOATINT (value) > 0)
it->space_width = value;
}
return 0;
}
/* Handle `(slice X Y WIDTH HEIGHT)'. */
if (CONSP (spec)
&& EQ (XCAR (spec), Qslice))
{
Lisp_Object tem;
if (it)
{
if (!FRAME_WINDOW_P (it->f))
return 0;
if (tem = XCDR (spec), CONSP (tem))
{
it->slice.x = XCAR (tem);
if (tem = XCDR (tem), CONSP (tem))
{
it->slice.y = XCAR (tem);
if (tem = XCDR (tem), CONSP (tem))
{
it->slice.width = XCAR (tem);
if (tem = XCDR (tem), CONSP (tem))
it->slice.height = XCAR (tem);
}
}
}
}
return 0;
}
/* Handle `(raise FACTOR)'. */
if (CONSP (spec)
&& EQ (XCAR (spec), Qraise)
&& CONSP (XCDR (spec)))
{
if (it)
{
if (!FRAME_WINDOW_P (it->f))
return 0;
#ifdef HAVE_WINDOW_SYSTEM
value = XCAR (XCDR (spec));
if (NUMBERP (value))
{
struct face *face = FACE_FROM_ID (it->f, it->face_id);
it->voffset = - (XFLOATINT (value)
* (normal_char_height (face->font, -1)));
}
#endif /* HAVE_WINDOW_SYSTEM */
}
return 0;
}
/* Don't handle the other kinds of display specifications
inside a string that we got from a `display' property. */
if (it && it->string_from_display_prop_p)
return 0;
/* Characters having this form of property are not displayed, so
we have to find the end of the property. */
if (it)
{
start_pos = *position;
*position = display_prop_end (it, object, start_pos);
/* If the display property comes from an overlay, don't consider
any potential stop_charpos values before the end of that
overlay. Since display_prop_end will happily find another
'display' property coming from some other overlay or text
property on buffer positions before this overlay's end, we
need to ignore them, or else we risk displaying this
overlay's display string/image twice. */
if (!NILP (overlay))
{
ptrdiff_t ovendpos = OVERLAY_POSITION (OVERLAY_END (overlay));
if (ovendpos > CHARPOS (*position))
SET_TEXT_POS (*position, ovendpos, CHAR_TO_BYTE (ovendpos));
}
}
value = Qnil;
/* Stop the scan at that end position--we assume that all
text properties change there. */
if (it)
it->stop_charpos = position->charpos;
/* Handle `(left-fringe BITMAP [FACE])'
and `(right-fringe BITMAP [FACE])'. */
if (CONSP (spec)
&& (EQ (XCAR (spec), Qleft_fringe)
|| EQ (XCAR (spec), Qright_fringe))
&& CONSP (XCDR (spec)))
{
if (it)
{
if (!FRAME_WINDOW_P (it->f))
/* If we return here, POSITION has been advanced
across the text with this property. */
{
/* Synchronize the bidi iterator with POSITION. This is
needed because we are not going to push the iterator
on behalf of this display property, so there will be
no pop_it call to do this synchronization for us. */
if (it->bidi_p)
{
it->position = *position;
iterate_out_of_display_property (it);
*position = it->position;
}
return 1;
}
}
else if (!frame_window_p)
return 1;
#ifdef HAVE_WINDOW_SYSTEM
value = XCAR (XCDR (spec));
int fringe_bitmap = SYMBOLP (value) ? lookup_fringe_bitmap (value) : 0;
if (! fringe_bitmap)
/* If we return here, POSITION has been advanced
across the text with this property. */
{
if (it && it->bidi_p)
{
it->position = *position;
iterate_out_of_display_property (it);
*position = it->position;
}
return 1;
}
if (it)
{
int face_id = lookup_basic_face (it->f, DEFAULT_FACE_ID);
if (CONSP (XCDR (XCDR (spec))))
{
Lisp_Object face_name = XCAR (XCDR (XCDR (spec)));
int face_id2 = lookup_derived_face (it->f, face_name,
FRINGE_FACE_ID, false);
if (face_id2 >= 0)
face_id = face_id2;
}
/* Save current settings of IT so that we can restore them
when we are finished with the glyph property value. */
push_it (it, position);
it->area = TEXT_AREA;
it->what = IT_IMAGE;
it->image_id = -1; /* no image */
it->position = start_pos;
it->object = NILP (object) ? it->w->contents : object;
it->method = GET_FROM_IMAGE;
it->from_overlay = Qnil;
it->face_id = face_id;
it->from_disp_prop_p = true;
/* Say that we haven't consumed the characters with
`display' property yet. The call to pop_it in
set_iterator_to_next will clean this up. */
*position = start_pos;
if (EQ (XCAR (spec), Qleft_fringe))
{
it->left_user_fringe_bitmap = fringe_bitmap;
it->left_user_fringe_face_id = face_id;
}
else
{
it->right_user_fringe_bitmap = fringe_bitmap;
it->right_user_fringe_face_id = face_id;
}
}
#endif /* HAVE_WINDOW_SYSTEM */
return 1;
}
/* Prepare to handle `((margin left-margin) ...)',
`((margin right-margin) ...)' and `((margin nil) ...)'
prefixes for display specifications. */
location = Qunbound;
if (CONSP (spec) && CONSP (XCAR (spec)))
{
Lisp_Object tem;
value = XCDR (spec);
if (CONSP (value))
value = XCAR (value);
tem = XCAR (spec);
if (EQ (XCAR (tem), Qmargin)
&& (tem = XCDR (tem),
tem = CONSP (tem) ? XCAR (tem) : Qnil,
(NILP (tem)
|| EQ (tem, Qleft_margin)
|| EQ (tem, Qright_margin))))
location = tem;
}
if (EQ (location, Qunbound))
{
location = Qnil;
value = spec;
}
/* After this point, VALUE is the property after any
margin prefix has been stripped. It must be a string,
an image specification, or `(space ...)'.
LOCATION specifies where to display: `left-margin',
`right-margin' or nil. */
bool valid_p = (STRINGP (value)
#ifdef HAVE_WINDOW_SYSTEM
|| ((it ? FRAME_WINDOW_P (it->f) : frame_window_p)
&& valid_image_p (value))
#endif /* not HAVE_WINDOW_SYSTEM */
|| (CONSP (value) && EQ (XCAR (value), Qspace))
|| ((it ? FRAME_WINDOW_P (it->f) : frame_window_p)
&& valid_xwidget_spec_p (value)));
if (valid_p && display_replaced == 0)
{
int retval = 1;
if (!it)
{
/* Callers need to know whether the display spec is any kind
of `(space ...)' spec that is about to affect text-area
display. */
if (CONSP (value) && EQ (XCAR (value), Qspace) && NILP (location))
retval = 2;
return retval;
}
/* Save current settings of IT so that we can restore them
when we are finished with the glyph property value. */
push_it (it, position);
it->from_overlay = overlay;
it->from_disp_prop_p = true;
if (NILP (location))
it->area = TEXT_AREA;
else if (EQ (location, Qleft_margin))
it->area = LEFT_MARGIN_AREA;
else
it->area = RIGHT_MARGIN_AREA;
if (STRINGP (value))
{
it->string = value;
it->multibyte_p = STRING_MULTIBYTE (it->string);
it->current.overlay_string_index = -1;
IT_STRING_CHARPOS (*it) = IT_STRING_BYTEPOS (*it) = 0;
it->end_charpos = it->string_nchars = SCHARS (it->string);
it->method = GET_FROM_STRING;
it->stop_charpos = 0;
it->prev_stop = 0;
it->base_level_stop = 0;
it->string_from_display_prop_p = true;
/* Say that we haven't consumed the characters with
`display' property yet. The call to pop_it in
set_iterator_to_next will clean this up. */
if (BUFFERP (object))
*position = start_pos;
/* Force paragraph direction to be that of the parent
object. If the parent object's paragraph direction is
not yet determined, default to L2R. */
if (it->bidi_p && it->bidi_it.paragraph_dir == R2L)
it->paragraph_embedding = it->bidi_it.paragraph_dir;
else
it->paragraph_embedding = L2R;
/* Set up the bidi iterator for this display string. */
if (it->bidi_p)
{
it->bidi_it.string.lstring = it->string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = it->end_charpos;
it->bidi_it.string.bufpos = bufpos;
it->bidi_it.string.from_disp_str = true;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (0, 0, FRAME_WINDOW_P (it->f), &it->bidi_it);
}
}
else if (CONSP (value) && EQ (XCAR (value), Qspace))
{
it->method = GET_FROM_STRETCH;
it->object = value;
*position = it->position = start_pos;
retval = 1 + (it->area == TEXT_AREA);
}
else if (valid_xwidget_spec_p (value))
{
it->what = IT_XWIDGET;
it->method = GET_FROM_XWIDGET;
it->position = start_pos;
it->object = NILP (object) ? it->w->contents : object;
*position = start_pos;
it->xwidget = lookup_xwidget (value);
}
#ifdef HAVE_WINDOW_SYSTEM
else
{
it->what = IT_IMAGE;
it->image_id = lookup_image (it->f, value);
it->position = start_pos;
it->object = NILP (object) ? it->w->contents : object;
it->method = GET_FROM_IMAGE;
/* Say that we haven't consumed the characters with
`display' property yet. The call to pop_it in
set_iterator_to_next will clean this up. */
*position = start_pos;
}
#endif /* HAVE_WINDOW_SYSTEM */
return retval;
}
/* Invalid property or property not supported. Restore
POSITION to what it was before. */
*position = start_pos;
return 0;
}
/* Check if PROP is a display property value whose text should be
treated as intangible. OVERLAY is the overlay from which PROP
came, or nil if it came from a text property. CHARPOS and BYTEPOS
specify the buffer position covered by PROP. */
bool
display_prop_intangible_p (Lisp_Object prop, Lisp_Object overlay,
ptrdiff_t charpos, ptrdiff_t bytepos)
{
bool frame_window_p = FRAME_WINDOW_P (XFRAME (selected_frame));
struct text_pos position;
SET_TEXT_POS (position, charpos, bytepos);
return (handle_display_spec (NULL, prop, Qnil, overlay,
&position, charpos, frame_window_p)
!= 0);
}
/* Return true if PROP is a display sub-property value containing STRING.
Implementation note: this and the following function are really
special cases of handle_display_spec and
handle_single_display_spec, and should ideally use the same code.
Until they do, these two pairs must be consistent and must be
modified in sync. */
static bool
single_display_spec_string_p (Lisp_Object prop, Lisp_Object string)
{
if (EQ (string, prop))
return true;
/* Skip over `when FORM'. */
if (CONSP (prop) && EQ (XCAR (prop), Qwhen))
{
prop = XCDR (prop);
if (!CONSP (prop))
return false;
/* Actually, the condition following `when' should be eval'ed,
like handle_single_display_spec does, and we should return
false if it evaluates to nil. However, this function is
called only when the buffer was already displayed and some
glyph in the glyph matrix was found to come from a display
string. Therefore, the condition was already evaluated, and
the result was non-nil, otherwise the display string wouldn't
have been displayed and we would have never been called for
this property. Thus, we can skip the evaluation and assume
its result is non-nil. */
prop = XCDR (prop);
}
if (CONSP (prop))
/* Skip over `margin LOCATION'. */
if (EQ (XCAR (prop), Qmargin))
{
prop = XCDR (prop);
if (!CONSP (prop))
return false;
prop = XCDR (prop);
if (!CONSP (prop))
return false;
}
return EQ (prop, string) || (CONSP (prop) && EQ (XCAR (prop), string));
}
/* Return true if STRING appears in the `display' property PROP. */
static bool
display_prop_string_p (Lisp_Object prop, Lisp_Object string)
{
if (CONSP (prop)
&& !EQ (XCAR (prop), Qwhen)
&& !(CONSP (XCAR (prop)) && EQ (Qmargin, XCAR (XCAR (prop)))))
{
/* A list of sub-properties. */
while (CONSP (prop))
{
if (single_display_spec_string_p (XCAR (prop), string))
return true;
prop = XCDR (prop);
}
}
else if (VECTORP (prop))
{
/* A vector of sub-properties. */
ptrdiff_t i;
for (i = 0; i < ASIZE (prop); ++i)
if (single_display_spec_string_p (AREF (prop, i), string))
return true;
}
else
return single_display_spec_string_p (prop, string);
return false;
}
/* Look for STRING in overlays and text properties in the current
buffer, between character positions FROM and TO (excluding TO).
BACK_P means look back (in this case, TO is supposed to be
less than FROM).
Value is the first character position where STRING was found, or
zero if it wasn't found before hitting TO.
This function may only use code that doesn't eval because it is
called asynchronously from note_mouse_highlight. */
static ptrdiff_t
string_buffer_position_lim (Lisp_Object string,
ptrdiff_t from, ptrdiff_t to, bool back_p)
{
Lisp_Object limit, prop, pos;
bool found = false;
pos = make_number (max (from, BEGV));
if (!back_p) /* looking forward */
{
limit = make_number (min (to, ZV));
while (!found && !EQ (pos, limit))
{
prop = Fget_char_property (pos, Qdisplay, Qnil);
if (!NILP (prop) && display_prop_string_p (prop, string))
found = true;
else
pos = Fnext_single_char_property_change (pos, Qdisplay, Qnil,
limit);
}
}
else /* looking back */
{
limit = make_number (max (to, BEGV));
while (!found && !EQ (pos, limit))
{
prop = Fget_char_property (pos, Qdisplay, Qnil);
if (!NILP (prop) && display_prop_string_p (prop, string))
found = true;
else
pos = Fprevious_single_char_property_change (pos, Qdisplay, Qnil,
limit);
}
}
return found ? XINT (pos) : 0;
}
/* Determine which buffer position in current buffer STRING comes from.
AROUND_CHARPOS is an approximate position where it could come from.
Value is the buffer position or 0 if it couldn't be determined.
This function is necessary because we don't record buffer positions
in glyphs generated from strings (to keep struct glyph small).
This function may only use code that doesn't eval because it is
called asynchronously from note_mouse_highlight. */
static ptrdiff_t
string_buffer_position (Lisp_Object string, ptrdiff_t around_charpos)
{
const int MAX_DISTANCE = 1000;
ptrdiff_t found = string_buffer_position_lim (string, around_charpos,
around_charpos + MAX_DISTANCE,
false);
if (!found)
found = string_buffer_position_lim (string, around_charpos,
around_charpos - MAX_DISTANCE, true);
return found;
}
\f
/***********************************************************************
`composition' property
***********************************************************************/
/* Set up iterator IT from `composition' property at its current
position. Called from handle_stop. */
static enum prop_handled
handle_composition_prop (struct it *it)
{
Lisp_Object prop, string;
ptrdiff_t pos, pos_byte, start, end;
if (STRINGP (it->string))
{
unsigned char *s;
pos = IT_STRING_CHARPOS (*it);
pos_byte = IT_STRING_BYTEPOS (*it);
string = it->string;
s = SDATA (string) + pos_byte;
it->c = STRING_CHAR (s);
}
else
{
pos = IT_CHARPOS (*it);
pos_byte = IT_BYTEPOS (*it);
string = Qnil;
it->c = FETCH_CHAR (pos_byte);
}
/* If there's a valid composition and point is not inside of the
composition (in the case that the composition is from the current
buffer), draw a glyph composed from the composition components. */
if (find_composition (pos, -1, &start, &end, &prop, string)
&& composition_valid_p (start, end, prop)
&& (STRINGP (it->string) || (PT <= start || PT >= end)))
{
if (start < pos)
/* As we can't handle this situation (perhaps font-lock added
a new composition), we just return here hoping that next
redisplay will detect this composition much earlier. */
return HANDLED_NORMALLY;
if (start != pos)
{
if (STRINGP (it->string))
pos_byte = string_char_to_byte (it->string, start);
else
pos_byte = CHAR_TO_BYTE (start);
}
it->cmp_it.id = get_composition_id (start, pos_byte, end - start,
prop, string);
if (it->cmp_it.id >= 0)
{
it->cmp_it.ch = -1;
it->cmp_it.nchars = COMPOSITION_LENGTH (prop);
it->cmp_it.nglyphs = -1;
}
}
return HANDLED_NORMALLY;
}
\f
/***********************************************************************
Overlay strings
***********************************************************************/
/* The following structure is used to record overlay strings for
later sorting in load_overlay_strings. */
struct overlay_entry
{
Lisp_Object overlay;
Lisp_Object string;
EMACS_INT priority;
bool after_string_p;
};
/* Set up iterator IT from overlay strings at its current position.
Called from handle_stop. */
static enum prop_handled
handle_overlay_change (struct it *it)
{
if (!STRINGP (it->string) && get_overlay_strings (it, 0))
return HANDLED_RECOMPUTE_PROPS;
else
return HANDLED_NORMALLY;
}
/* Set up the next overlay string for delivery by IT, if there is an
overlay string to deliver. Called by set_iterator_to_next when the
end of the current overlay string is reached. If there are more
overlay strings to display, IT->string and
IT->current.overlay_string_index are set appropriately here.
Otherwise IT->string is set to nil. */
static void
next_overlay_string (struct it *it)
{
++it->current.overlay_string_index;
if (it->current.overlay_string_index == it->n_overlay_strings)
{
/* No more overlay strings. Restore IT's settings to what
they were before overlay strings were processed, and
continue to deliver from current_buffer. */
it->ellipsis_p = it->stack[it->sp - 1].display_ellipsis_p;
pop_it (it);
eassert (it->sp > 0
|| (NILP (it->string)
&& it->method == GET_FROM_BUFFER
&& it->stop_charpos >= BEGV
&& it->stop_charpos <= it->end_charpos));
it->current.overlay_string_index = -1;
it->n_overlay_strings = 0;
/* If there's an empty display string on the stack, pop the
stack, to resync the bidi iterator with IT's position. Such
empty strings are pushed onto the stack in
get_overlay_strings_1. */
if (it->sp > 0 && STRINGP (it->string) && !SCHARS (it->string))
pop_it (it);
/* Since we've exhausted overlay strings at this buffer
position, set the flag to ignore overlays until we move to
another position. The flag is reset in
next_element_from_buffer. */
it->ignore_overlay_strings_at_pos_p = true;
/* If we're at the end of the buffer, record that we have
processed the overlay strings there already, so that
next_element_from_buffer doesn't try it again. */
if (NILP (it->string)
&& IT_CHARPOS (*it) >= it->end_charpos
&& it->overlay_strings_charpos >= it->end_charpos)
it->overlay_strings_at_end_processed_p = true;
/* Note: we reset overlay_strings_charpos only here, to make
sure the just-processed overlays were indeed at EOB.
Otherwise, overlays on text with invisible text property,
which are processed with IT's position past the invisible
text, might fool us into thinking the overlays at EOB were
already processed (linum-mode can cause this, for
example). */
it->overlay_strings_charpos = -1;
}
else
{
/* There are more overlay strings to process. If
IT->current.overlay_string_index has advanced to a position
where we must load IT->overlay_strings with more strings, do
it. We must load at the IT->overlay_strings_charpos where
IT->n_overlay_strings was originally computed; when invisible
text is present, this might not be IT_CHARPOS (Bug#7016). */
int i = it->current.overlay_string_index % OVERLAY_STRING_CHUNK_SIZE;
if (it->current.overlay_string_index && i == 0)
load_overlay_strings (it, it->overlay_strings_charpos);
/* Initialize IT to deliver display elements from the overlay
string. */
it->string = it->overlay_strings[i];
it->multibyte_p = STRING_MULTIBYTE (it->string);
SET_TEXT_POS (it->current.string_pos, 0, 0);
it->method = GET_FROM_STRING;
it->stop_charpos = 0;
it->end_charpos = SCHARS (it->string);
if (it->cmp_it.stop_pos >= 0)
it->cmp_it.stop_pos = 0;
it->prev_stop = 0;
it->base_level_stop = 0;
/* Set up the bidi iterator for this overlay string. */
if (it->bidi_p)
{
it->bidi_it.string.lstring = it->string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = SCHARS (it->string);
it->bidi_it.string.bufpos = it->overlay_strings_charpos;
it->bidi_it.string.from_disp_str = it->string_from_display_prop_p;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (0, 0, FRAME_WINDOW_P (it->f), &it->bidi_it);
}
}
CHECK_IT (it);
}
/* Compare two overlay_entry structures E1 and E2. Used as a
comparison function for qsort in load_overlay_strings. Overlay
strings for the same position are sorted so that
1. All after-strings come in front of before-strings, except
when they come from the same overlay.
2. Within after-strings, strings are sorted so that overlay strings
from overlays with higher priorities come first.
2. Within before-strings, strings are sorted so that overlay
strings from overlays with higher priorities come last.
Value is analogous to strcmp. */
static int
compare_overlay_entries (const void *e1, const void *e2)
{
struct overlay_entry const *entry1 = e1;
struct overlay_entry const *entry2 = e2;
int result;
if (entry1->after_string_p != entry2->after_string_p)
{
/* Let after-strings appear in front of before-strings if
they come from different overlays. */
if (EQ (entry1->overlay, entry2->overlay))
result = entry1->after_string_p ? 1 : -1;
else
result = entry1->after_string_p ? -1 : 1;
}
else if (entry1->priority != entry2->priority)
{
if (entry1->after_string_p)
/* After-strings sorted in order of decreasing priority. */
result = entry2->priority < entry1->priority ? -1 : 1;
else
/* Before-strings sorted in order of increasing priority. */
result = entry1->priority < entry2->priority ? -1 : 1;
}
else
result = 0;
return result;
}
/* Load the vector IT->overlay_strings with overlay strings from IT's
current buffer position, or from CHARPOS if that is > 0. Set
IT->n_overlays to the total number of overlay strings found.
Overlay strings are processed OVERLAY_STRING_CHUNK_SIZE strings at
a time. On entry into load_overlay_strings,
IT->current.overlay_string_index gives the number of overlay
strings that have already been loaded by previous calls to this
function.
IT->add_overlay_start contains an additional overlay start
position to consider for taking overlay strings from, if non-zero.
This position comes into play when the overlay has an `invisible'
property, and both before and after-strings. When we've skipped to
the end of the overlay, because of its `invisible' property, we
nevertheless want its before-string to appear.
IT->add_overlay_start will contain the overlay start position
in this case.
Overlay strings are sorted so that after-string strings come in
front of before-string strings. Within before and after-strings,
strings are sorted by overlay priority. See also function
compare_overlay_entries. */
static void
load_overlay_strings (struct it *it, ptrdiff_t charpos)
{
Lisp_Object overlay, window, str, invisible;
struct Lisp_Overlay *ov;
ptrdiff_t start, end;
ptrdiff_t n = 0, i, j;
int invis;
struct overlay_entry entriesbuf[20];
ptrdiff_t size = ARRAYELTS (entriesbuf);
struct overlay_entry *entries = entriesbuf;
USE_SAFE_ALLOCA;
if (charpos <= 0)
charpos = IT_CHARPOS (*it);
/* Append the overlay string STRING of overlay OVERLAY to vector
`entries' which has size `size' and currently contains `n'
elements. AFTER_P means STRING is an after-string of
OVERLAY. */
#define RECORD_OVERLAY_STRING(OVERLAY, STRING, AFTER_P) \
do \
{ \
Lisp_Object priority; \
\
if (n == size) \
{ \
struct overlay_entry *old = entries; \
SAFE_NALLOCA (entries, 2, size); \
memcpy (entries, old, size * sizeof *entries); \
size *= 2; \
} \
\
entries[n].string = (STRING); \
entries[n].overlay = (OVERLAY); \
priority = Foverlay_get ((OVERLAY), Qpriority); \
entries[n].priority = INTEGERP (priority) ? XINT (priority) : 0; \
entries[n].after_string_p = (AFTER_P); \
++n; \
} \
while (false)
/* Process overlay before the overlay center. */
for (ov = current_buffer->overlays_before; ov; ov = ov->next)
{
XSETMISC (overlay, ov);
eassert (OVERLAYP (overlay));
start = OVERLAY_POSITION (OVERLAY_START (overlay));
end = OVERLAY_POSITION (OVERLAY_END (overlay));
if (end < charpos)
break;
/* Skip this overlay if it doesn't start or end at IT's current
position. */
if (end != charpos && start != charpos)
continue;
/* Skip this overlay if it doesn't apply to IT->w. */
window = Foverlay_get (overlay, Qwindow);
if (WINDOWP (window) && XWINDOW (window) != it->w)
continue;
/* If the text ``under'' the overlay is invisible, both before-
and after-strings from this overlay are visible; start and
end position are indistinguishable. */
invisible = Foverlay_get (overlay, Qinvisible);
invis = TEXT_PROP_MEANS_INVISIBLE (invisible);
/* If overlay has a non-empty before-string, record it. */
if ((start == charpos || (end == charpos && invis != 0))
&& (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))
&& SCHARS (str))
RECORD_OVERLAY_STRING (overlay, str, false);
/* If overlay has a non-empty after-string, record it. */
if ((end == charpos || (start == charpos && invis != 0))
&& (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))
&& SCHARS (str))
RECORD_OVERLAY_STRING (overlay, str, true);
}
/* Process overlays after the overlay center. */
for (ov = current_buffer->overlays_after; ov; ov = ov->next)
{
XSETMISC (overlay, ov);
eassert (OVERLAYP (overlay));
start = OVERLAY_POSITION (OVERLAY_START (overlay));
end = OVERLAY_POSITION (OVERLAY_END (overlay));
if (start > charpos)
break;
/* Skip this overlay if it doesn't start or end at IT's current
position. */
if (end != charpos && start != charpos)
continue;
/* Skip this overlay if it doesn't apply to IT->w. */
window = Foverlay_get (overlay, Qwindow);
if (WINDOWP (window) && XWINDOW (window) != it->w)
continue;
/* If the text ``under'' the overlay is invisible, it has a zero
dimension, and both before- and after-strings apply. */
invisible = Foverlay_get (overlay, Qinvisible);
invis = TEXT_PROP_MEANS_INVISIBLE (invisible);
/* If overlay has a non-empty before-string, record it. */
if ((start == charpos || (end == charpos && invis != 0))
&& (str = Foverlay_get (overlay, Qbefore_string), STRINGP (str))
&& SCHARS (str))
RECORD_OVERLAY_STRING (overlay, str, false);
/* If overlay has a non-empty after-string, record it. */
if ((end == charpos || (start == charpos && invis != 0))
&& (str = Foverlay_get (overlay, Qafter_string), STRINGP (str))
&& SCHARS (str))
RECORD_OVERLAY_STRING (overlay, str, true);
}
#undef RECORD_OVERLAY_STRING
/* Sort entries. */
if (n > 1)
qsort (entries, n, sizeof *entries, compare_overlay_entries);
/* Record number of overlay strings, and where we computed it. */
it->n_overlay_strings = n;
it->overlay_strings_charpos = charpos;
/* IT->current.overlay_string_index is the number of overlay strings
that have already been consumed by IT. Copy some of the
remaining overlay strings to IT->overlay_strings. */
i = 0;
j = it->current.overlay_string_index;
while (i < OVERLAY_STRING_CHUNK_SIZE && j < n)
{
it->overlay_strings[i] = entries[j].string;
it->string_overlays[i++] = entries[j++].overlay;
}
CHECK_IT (it);
SAFE_FREE ();
}
/* Get the first chunk of overlay strings at IT's current buffer
position, or at CHARPOS if that is > 0. Value is true if at
least one overlay string was found. */
static bool
get_overlay_strings_1 (struct it *it, ptrdiff_t charpos, bool compute_stop_p)
{
/* Get the first OVERLAY_STRING_CHUNK_SIZE overlay strings to
process. This fills IT->overlay_strings with strings, and sets
IT->n_overlay_strings to the total number of strings to process.
IT->pos.overlay_string_index has to be set temporarily to zero
because load_overlay_strings needs this; it must be set to -1
when no overlay strings are found because a zero value would
indicate a position in the first overlay string. */
it->current.overlay_string_index = 0;
load_overlay_strings (it, charpos);
/* If we found overlay strings, set up IT to deliver display
elements from the first one. Otherwise set up IT to deliver
from current_buffer. */
if (it->n_overlay_strings)
{
/* Make sure we know settings in current_buffer, so that we can
restore meaningful values when we're done with the overlay
strings. */
if (compute_stop_p)
compute_stop_pos (it);
eassert (it->face_id >= 0);
/* Save IT's settings. They are restored after all overlay
strings have been processed. */
eassert (!compute_stop_p || it->sp == 0);
/* When called from handle_stop, there might be an empty display
string loaded. In that case, don't bother saving it. But
don't use this optimization with the bidi iterator, since we
need the corresponding pop_it call to resync the bidi
iterator's position with IT's position, after we are done
with the overlay strings. (The corresponding call to pop_it
in case of an empty display string is in
next_overlay_string.) */
if (!(!it->bidi_p
&& STRINGP (it->string) && !SCHARS (it->string)))
push_it (it, NULL);
/* Set up IT to deliver display elements from the first overlay
string. */
IT_STRING_CHARPOS (*it) = IT_STRING_BYTEPOS (*it) = 0;
it->string = it->overlay_strings[0];
it->from_overlay = Qnil;
it->stop_charpos = 0;
eassert (STRINGP (it->string));
it->end_charpos = SCHARS (it->string);
it->prev_stop = 0;
it->base_level_stop = 0;
it->multibyte_p = STRING_MULTIBYTE (it->string);
it->method = GET_FROM_STRING;
it->from_disp_prop_p = 0;
/* Force paragraph direction to be that of the parent
buffer. */
if (it->bidi_p && it->bidi_it.paragraph_dir == R2L)
it->paragraph_embedding = it->bidi_it.paragraph_dir;
else
it->paragraph_embedding = L2R;
/* Set up the bidi iterator for this overlay string. */
if (it->bidi_p)
{
ptrdiff_t pos = (charpos > 0 ? charpos : IT_CHARPOS (*it));
it->bidi_it.string.lstring = it->string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = SCHARS (it->string);
it->bidi_it.string.bufpos = pos;
it->bidi_it.string.from_disp_str = it->string_from_display_prop_p;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (0, 0, FRAME_WINDOW_P (it->f), &it->bidi_it);
}
return true;
}
it->current.overlay_string_index = -1;
return false;
}
static bool
get_overlay_strings (struct it *it, ptrdiff_t charpos)
{
it->string = Qnil;
it->method = GET_FROM_BUFFER;
get_overlay_strings_1 (it, charpos, true);
CHECK_IT (it);
/* Value is true if we found at least one overlay string. */
return STRINGP (it->string);
}
\f
/***********************************************************************
Saving and restoring state
***********************************************************************/
/* Save current settings of IT on IT->stack. Called, for example,
before setting up IT for an overlay string, to be able to restore
IT's settings to what they were after the overlay string has been
processed. If POSITION is non-NULL, it is the position to save on
the stack instead of IT->position. */
static void
push_it (struct it *it, struct text_pos *position)
{
struct iterator_stack_entry *p;
eassert (it->sp < IT_STACK_SIZE);
p = it->stack + it->sp;
p->stop_charpos = it->stop_charpos;
p->prev_stop = it->prev_stop;
p->base_level_stop = it->base_level_stop;
p->cmp_it = it->cmp_it;
eassert (it->face_id >= 0);
p->face_id = it->face_id;
p->string = it->string;
p->method = it->method;
p->from_overlay = it->from_overlay;
switch (p->method)
{
case GET_FROM_IMAGE:
p->u.image.object = it->object;
p->u.image.image_id = it->image_id;
p->u.image.slice = it->slice;
break;
case GET_FROM_STRETCH:
p->u.stretch.object = it->object;
break;
case GET_FROM_XWIDGET:
p->u.xwidget.object = it->object;
break;
case GET_FROM_BUFFER:
case GET_FROM_DISPLAY_VECTOR:
case GET_FROM_STRING:
case GET_FROM_C_STRING:
break;
default:
emacs_abort ();
}
p->position = position ? *position : it->position;
p->current = it->current;
p->end_charpos = it->end_charpos;
p->string_nchars = it->string_nchars;
p->area = it->area;
p->multibyte_p = it->multibyte_p;
p->avoid_cursor_p = it->avoid_cursor_p;
p->space_width = it->space_width;
p->font_height = it->font_height;
p->voffset = it->voffset;
p->string_from_display_prop_p = it->string_from_display_prop_p;
p->string_from_prefix_prop_p = it->string_from_prefix_prop_p;
p->display_ellipsis_p = false;
p->line_wrap = it->line_wrap;
p->bidi_p = it->bidi_p;
p->paragraph_embedding = it->paragraph_embedding;
p->from_disp_prop_p = it->from_disp_prop_p;
++it->sp;
/* Save the state of the bidi iterator as well. */
if (it->bidi_p)
bidi_push_it (&it->bidi_it);
}
static void
iterate_out_of_display_property (struct it *it)
{
bool buffer_p = !STRINGP (it->string);
ptrdiff_t eob = (buffer_p ? ZV : it->end_charpos);
ptrdiff_t bob = (buffer_p ? BEGV : 0);
eassert (eob >= CHARPOS (it->position) && CHARPOS (it->position) >= bob);
/* Maybe initialize paragraph direction. If we are at the beginning
of a new paragraph, next_element_from_buffer may not have a
chance to do that. */
if (it->bidi_it.first_elt && it->bidi_it.charpos < eob)
bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it, true);
/* prev_stop can be zero, so check against BEGV as well. */
while (it->bidi_it.charpos >= bob
&& it->prev_stop <= it->bidi_it.charpos
&& it->bidi_it.charpos < CHARPOS (it->position)
&& it->bidi_it.charpos < eob)
bidi_move_to_visually_next (&it->bidi_it);
/* Record the stop_pos we just crossed, for when we cross it
back, maybe. */
if (it->bidi_it.charpos > CHARPOS (it->position))
it->prev_stop = CHARPOS (it->position);
/* If we ended up not where pop_it put us, resync IT's
positional members with the bidi iterator. */
if (it->bidi_it.charpos != CHARPOS (it->position))
SET_TEXT_POS (it->position, it->bidi_it.charpos, it->bidi_it.bytepos);
if (buffer_p)
it->current.pos = it->position;
else
it->current.string_pos = it->position;
}
/* Restore IT's settings from IT->stack. Called, for example, when no
more overlay strings must be processed, and we return to delivering
display elements from a buffer, or when the end of a string from a
`display' property is reached and we return to delivering display
elements from an overlay string, or from a buffer. */
static void
pop_it (struct it *it)
{
struct iterator_stack_entry *p;
bool from_display_prop = it->from_disp_prop_p;
ptrdiff_t prev_pos = IT_CHARPOS (*it);
eassert (it->sp > 0);
--it->sp;
p = it->stack + it->sp;
it->stop_charpos = p->stop_charpos;
it->prev_stop = p->prev_stop;
it->base_level_stop = p->base_level_stop;
it->cmp_it = p->cmp_it;
it->face_id = p->face_id;
it->current = p->current;
it->position = p->position;
it->string = p->string;
it->from_overlay = p->from_overlay;
if (NILP (it->string))
SET_TEXT_POS (it->current.string_pos, -1, -1);
it->method = p->method;
switch (it->method)
{
case GET_FROM_IMAGE:
it->image_id = p->u.image.image_id;
it->object = p->u.image.object;
it->slice = p->u.image.slice;
break;
case GET_FROM_XWIDGET:
it->object = p->u.xwidget.object;
break;
case GET_FROM_STRETCH:
it->object = p->u.stretch.object;
break;
case GET_FROM_BUFFER:
it->object = it->w->contents;
break;
case GET_FROM_STRING:
{
struct face *face = FACE_FROM_ID_OR_NULL (it->f, it->face_id);
/* Restore the face_box_p flag, since it could have been
overwritten by the face of the object that we just finished
displaying. */
if (face)
it->face_box_p = face->box != FACE_NO_BOX;
it->object = it->string;
}
break;
case GET_FROM_DISPLAY_VECTOR:
if (it->s)
it->method = GET_FROM_C_STRING;
else if (STRINGP (it->string))
it->method = GET_FROM_STRING;
else
{
it->method = GET_FROM_BUFFER;
it->object = it->w->contents;
}
break;
case GET_FROM_C_STRING:
break;
default:
emacs_abort ();
}
it->end_charpos = p->end_charpos;
it->string_nchars = p->string_nchars;
it->area = p->area;
it->multibyte_p = p->multibyte_p;
it->avoid_cursor_p = p->avoid_cursor_p;
it->space_width = p->space_width;
it->font_height = p->font_height;
it->voffset = p->voffset;
it->string_from_display_prop_p = p->string_from_display_prop_p;
it->string_from_prefix_prop_p = p->string_from_prefix_prop_p;
it->line_wrap = p->line_wrap;
it->bidi_p = p->bidi_p;
it->paragraph_embedding = p->paragraph_embedding;
it->from_disp_prop_p = p->from_disp_prop_p;
if (it->bidi_p)
{
bidi_pop_it (&it->bidi_it);
/* Bidi-iterate until we get out of the portion of text, if any,
covered by a `display' text property or by an overlay with
`display' property. (We cannot just jump there, because the
internal coherency of the bidi iterator state can not be
preserved across such jumps.) We also must determine the
paragraph base direction if the overlay we just processed is
at the beginning of a new paragraph. */
if (from_display_prop
&& (it->method == GET_FROM_BUFFER || it->method == GET_FROM_STRING))
iterate_out_of_display_property (it);
eassert ((BUFFERP (it->object)
&& IT_CHARPOS (*it) == it->bidi_it.charpos
&& IT_BYTEPOS (*it) == it->bidi_it.bytepos)
|| (STRINGP (it->object)
&& IT_STRING_CHARPOS (*it) == it->bidi_it.charpos
&& IT_STRING_BYTEPOS (*it) == it->bidi_it.bytepos)
|| (CONSP (it->object) && it->method == GET_FROM_STRETCH));
}
/* If we move the iterator over text covered by a display property
to a new buffer position, any info about previously seen overlays
is no longer valid. */
if (from_display_prop && it->sp == 0 && CHARPOS (it->position) != prev_pos)
it->ignore_overlay_strings_at_pos_p = false;
}
\f
/***********************************************************************
Moving over lines
***********************************************************************/
/* Set IT's current position to the previous line start. */
static void
back_to_previous_line_start (struct it *it)
{
ptrdiff_t cp = IT_CHARPOS (*it), bp = IT_BYTEPOS (*it);
DEC_BOTH (cp, bp);
IT_CHARPOS (*it) = find_newline_no_quit (cp, bp, -1, &IT_BYTEPOS (*it));
}
/* Move IT to the next line start.
Value is true if a newline was found. Set *SKIPPED_P to true if
we skipped over part of the text (as opposed to moving the iterator
continuously over the text). Otherwise, don't change the value
of *SKIPPED_P.
If BIDI_IT_PREV is non-NULL, store into it the state of the bidi
iterator on the newline, if it was found.
Newlines may come from buffer text, overlay strings, or strings
displayed via the `display' property. That's the reason we can't
simply use find_newline_no_quit.
Note that this function may not skip over invisible text that is so
because of text properties and immediately follows a newline. If
it would, function reseat_at_next_visible_line_start, when called
from set_iterator_to_next, would effectively make invisible
characters following a newline part of the wrong glyph row, which
leads to wrong cursor motion. */
static bool
forward_to_next_line_start (struct it *it, bool *skipped_p,
struct bidi_it *bidi_it_prev)
{
ptrdiff_t old_selective;
bool newline_found_p = false;
int n;
const int MAX_NEWLINE_DISTANCE = 500;
/* If already on a newline, just consume it to avoid unintended
skipping over invisible text below. */
if (it->what == IT_CHARACTER
&& it->c == '\n'
&& CHARPOS (it->position) == IT_CHARPOS (*it))
{
if (it->bidi_p && bidi_it_prev)
*bidi_it_prev = it->bidi_it;
set_iterator_to_next (it, false);
it->c = 0;
return true;
}
/* Don't handle selective display in the following. It's (a)
unnecessary because it's done by the caller, and (b) leads to an
infinite recursion because next_element_from_ellipsis indirectly
calls this function. */
old_selective = it->selective;
it->selective = 0;
/* Scan for a newline within MAX_NEWLINE_DISTANCE display elements
from buffer text. */
for (n = 0;
!newline_found_p && n < MAX_NEWLINE_DISTANCE;
n += !STRINGP (it->string))
{
if (!get_next_display_element (it))
return false;
newline_found_p = it->what == IT_CHARACTER && it->c == '\n';
if (newline_found_p && it->bidi_p && bidi_it_prev)
*bidi_it_prev = it->bidi_it;
set_iterator_to_next (it, false);
}
/* If we didn't find a newline near enough, see if we can use a
short-cut. */
if (!newline_found_p)
{
ptrdiff_t bytepos, start = IT_CHARPOS (*it);
ptrdiff_t limit = find_newline_no_quit (start, IT_BYTEPOS (*it),
1, &bytepos);
Lisp_Object pos;
eassert (!STRINGP (it->string));
/* If there isn't any `display' property in sight, and no
overlays, we can just use the position of the newline in
buffer text. */
if (it->stop_charpos >= limit
|| ((pos = Fnext_single_property_change (make_number (start),
Qdisplay, Qnil,
make_number (limit)),
NILP (pos))
&& next_overlay_change (start) == ZV))
{
if (!it->bidi_p)
{
IT_CHARPOS (*it) = limit;
IT_BYTEPOS (*it) = bytepos;
}
else
{
struct bidi_it bprev;
/* Help bidi.c avoid expensive searches for display
properties and overlays, by telling it that there are
none up to `limit'. */
if (it->bidi_it.disp_pos < limit)
{
it->bidi_it.disp_pos = limit;
it->bidi_it.disp_prop = 0;
}
do {
bprev = it->bidi_it;
bidi_move_to_visually_next (&it->bidi_it);
} while (it->bidi_it.charpos != limit);
IT_CHARPOS (*it) = limit;
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
if (bidi_it_prev)
*bidi_it_prev = bprev;
}
*skipped_p = newline_found_p = true;
}
else
{
while (!newline_found_p)
{
if (!get_next_display_element (it))
break;
newline_found_p = ITERATOR_AT_END_OF_LINE_P (it);
if (newline_found_p && it->bidi_p && bidi_it_prev)
*bidi_it_prev = it->bidi_it;
set_iterator_to_next (it, false);
}
}
}
it->selective = old_selective;
return newline_found_p;
}
/* Set IT's current position to the previous visible line start. Skip
invisible text that is so either due to text properties or due to
selective display. Caution: this does not change IT->current_x and
IT->hpos. */
static void
back_to_previous_visible_line_start (struct it *it)
{
while (IT_CHARPOS (*it) > BEGV)
{
back_to_previous_line_start (it);
if (IT_CHARPOS (*it) <= BEGV)
break;
/* If selective > 0, then lines indented more than its value are
invisible. */
if (it->selective > 0
&& indented_beyond_p (IT_CHARPOS (*it), IT_BYTEPOS (*it),
it->selective))
continue;
/* Check the newline before point for invisibility. */
{
Lisp_Object prop;
prop = Fget_char_property (make_number (IT_CHARPOS (*it) - 1),
Qinvisible, it->window);
if (TEXT_PROP_MEANS_INVISIBLE (prop) != 0)
continue;
}
if (IT_CHARPOS (*it) <= BEGV)
break;
{
struct it it2;
void *it2data = NULL;
ptrdiff_t pos;
ptrdiff_t beg, end;
Lisp_Object val, overlay;
SAVE_IT (it2, *it, it2data);
/* If newline is part of a composition, continue from start of composition */
if (find_composition (IT_CHARPOS (*it), -1, &beg, &end, &val, Qnil)
&& beg < IT_CHARPOS (*it))
goto replaced;
/* If newline is replaced by a display property, find start of overlay
or interval and continue search from that point. */
pos = --IT_CHARPOS (it2);
--IT_BYTEPOS (it2);
it2.sp = 0;
bidi_unshelve_cache (NULL, false);
it2.string_from_display_prop_p = false;
it2.from_disp_prop_p = false;
if (handle_display_prop (&it2) == HANDLED_RETURN
&& !NILP (val = get_char_property_and_overlay
(make_number (pos), Qdisplay, Qnil, &overlay))
&& (OVERLAYP (overlay)
? (beg = OVERLAY_POSITION (OVERLAY_START (overlay)))
: get_property_and_range (pos, Qdisplay, &val, &beg, &end, Qnil)))
{
RESTORE_IT (it, it, it2data);
goto replaced;
}
/* Newline is not replaced by anything -- so we are done. */
RESTORE_IT (it, it, it2data);
break;
replaced:
if (beg < BEGV)
beg = BEGV;
IT_CHARPOS (*it) = beg;
IT_BYTEPOS (*it) = buf_charpos_to_bytepos (current_buffer, beg);
}
}
it->continuation_lines_width = 0;
eassert (IT_CHARPOS (*it) >= BEGV);
eassert (IT_CHARPOS (*it) == BEGV
|| FETCH_BYTE (IT_BYTEPOS (*it) - 1) == '\n');
CHECK_IT (it);
}
/* Reseat iterator IT at the previous visible line start. Skip
invisible text that is so either due to text properties or due to
selective display. At the end, update IT's overlay information,
face information etc. */
void
reseat_at_previous_visible_line_start (struct it *it)
{
back_to_previous_visible_line_start (it);
reseat (it, it->current.pos, true);
CHECK_IT (it);
}
/* Reseat iterator IT on the next visible line start in the current
buffer. ON_NEWLINE_P means position IT on the newline
preceding the line start. Skip over invisible text that is so
because of selective display. Compute faces, overlays etc at the
new position. Note that this function does not skip over text that
is invisible because of text properties. */
static void
reseat_at_next_visible_line_start (struct it *it, bool on_newline_p)
{
bool skipped_p = false;
struct bidi_it bidi_it_prev;
bool newline_found_p
= forward_to_next_line_start (it, &skipped_p, &bidi_it_prev);
/* Skip over lines that are invisible because they are indented
more than the value of IT->selective. */
if (it->selective > 0)
while (IT_CHARPOS (*it) < ZV
&& indented_beyond_p (IT_CHARPOS (*it), IT_BYTEPOS (*it),
it->selective))
{
eassert (IT_BYTEPOS (*it) == BEGV
|| FETCH_BYTE (IT_BYTEPOS (*it) - 1) == '\n');
newline_found_p =
forward_to_next_line_start (it, &skipped_p, &bidi_it_prev);
}
/* Position on the newline if that's what's requested. */
if (on_newline_p && newline_found_p)
{
if (STRINGP (it->string))
{
if (IT_STRING_CHARPOS (*it) > 0)
{
if (!it->bidi_p)
{
--IT_STRING_CHARPOS (*it);
--IT_STRING_BYTEPOS (*it);
}
else
{
/* We need to restore the bidi iterator to the state
it had on the newline, and resync the IT's
position with that. */
it->bidi_it = bidi_it_prev;
IT_STRING_CHARPOS (*it) = it->bidi_it.charpos;
IT_STRING_BYTEPOS (*it) = it->bidi_it.bytepos;
}
}
}
else if (IT_CHARPOS (*it) > BEGV)
{
if (!it->bidi_p)
{
--IT_CHARPOS (*it);
--IT_BYTEPOS (*it);
}
else
{
/* We need to restore the bidi iterator to the state it
had on the newline and resync IT with that. */
it->bidi_it = bidi_it_prev;
IT_CHARPOS (*it) = it->bidi_it.charpos;
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
}
reseat (it, it->current.pos, false);
}
}
else if (skipped_p)
reseat (it, it->current.pos, false);
CHECK_IT (it);
}
\f
/***********************************************************************
Changing an iterator's position
***********************************************************************/
/* Change IT's current position to POS in current_buffer.
If FORCE_P, always check for text properties at the new position.
Otherwise, text properties are only looked up if POS >=
IT->check_charpos of a property. */
static void
reseat (struct it *it, struct text_pos pos, bool force_p)
{
ptrdiff_t original_pos = IT_CHARPOS (*it);
reseat_1 (it, pos, false);
/* Determine where to check text properties. Avoid doing it
where possible because text property lookup is very expensive. */
if (force_p
|| CHARPOS (pos) > it->stop_charpos
|| CHARPOS (pos) < original_pos)
{
if (it->bidi_p)
{
/* For bidi iteration, we need to prime prev_stop and
base_level_stop with our best estimations. */
/* Implementation note: Of course, POS is not necessarily a
stop position, so assigning prev_pos to it is a lie; we
should have called compute_stop_backwards. However, if
the current buffer does not include any R2L characters,
that call would be a waste of cycles, because the
iterator will never move back, and thus never cross this
"fake" stop position. So we delay that backward search
until the time we really need it, in next_element_from_buffer. */
if (CHARPOS (pos) != it->prev_stop)
it->prev_stop = CHARPOS (pos);
if (CHARPOS (pos) < it->base_level_stop)
it->base_level_stop = 0; /* meaning it's unknown */
handle_stop (it);
}
else
{
handle_stop (it);
it->prev_stop = it->base_level_stop = 0;
}
}
CHECK_IT (it);
}
/* Change IT's buffer position to POS. SET_STOP_P means set
IT->stop_pos to POS, also. */
static void
reseat_1 (struct it *it, struct text_pos pos, bool set_stop_p)
{
/* Don't call this function when scanning a C string. */
eassert (it->s == NULL);
/* POS must be a reasonable value. */
eassert (CHARPOS (pos) >= BEGV && CHARPOS (pos) <= ZV);
it->current.pos = it->position = pos;
it->end_charpos = ZV;
it->dpvec = NULL;
it->current.dpvec_index = -1;
it->current.overlay_string_index = -1;
IT_STRING_CHARPOS (*it) = -1;
IT_STRING_BYTEPOS (*it) = -1;
it->string = Qnil;
it->method = GET_FROM_BUFFER;
it->object = it->w->contents;
it->area = TEXT_AREA;
it->multibyte_p = !NILP (BVAR (current_buffer, enable_multibyte_characters));
it->sp = 0;
it->string_from_display_prop_p = false;
it->string_from_prefix_prop_p = false;
it->from_disp_prop_p = false;
it->face_before_selective_p = false;
if (it->bidi_p)
{
bidi_init_it (IT_CHARPOS (*it), IT_BYTEPOS (*it), FRAME_WINDOW_P (it->f),
&it->bidi_it);
bidi_unshelve_cache (NULL, false);
it->bidi_it.paragraph_dir = NEUTRAL_DIR;
it->bidi_it.string.s = NULL;
it->bidi_it.string.lstring = Qnil;
it->bidi_it.string.bufpos = 0;
it->bidi_it.string.from_disp_str = false;
it->bidi_it.string.unibyte = false;
it->bidi_it.w = it->w;
}
if (set_stop_p)
{
it->stop_charpos = CHARPOS (pos);
it->base_level_stop = CHARPOS (pos);
}
/* This make the information stored in it->cmp_it invalidate. */
it->cmp_it.id = -1;
}
/* Set up IT for displaying a string, starting at CHARPOS in window W.
If S is non-null, it is a C string to iterate over. Otherwise,
STRING gives a Lisp string to iterate over.
If PRECISION > 0, don't return more then PRECISION number of
characters from the string.
If FIELD_WIDTH > 0, return padding spaces until FIELD_WIDTH
characters have been returned. FIELD_WIDTH < 0 means an infinite
field width.
MULTIBYTE = 0 means disable processing of multibyte characters,
MULTIBYTE > 0 means enable it,
MULTIBYTE < 0 means use IT->multibyte_p.
IT must be initialized via a prior call to init_iterator before
calling this function. */
static void
reseat_to_string (struct it *it, const char *s, Lisp_Object string,
ptrdiff_t charpos, ptrdiff_t precision, int field_width,
int multibyte)
{
/* No text property checks performed by default, but see below. */
it->stop_charpos = -1;
/* Set iterator position and end position. */
memset (&it->current, 0, sizeof it->current);
it->current.overlay_string_index = -1;
it->current.dpvec_index = -1;
eassert (charpos >= 0);
/* If STRING is specified, use its multibyteness, otherwise use the
setting of MULTIBYTE, if specified. */
if (multibyte >= 0)
it->multibyte_p = multibyte > 0;
/* Bidirectional reordering of strings is controlled by the default
value of bidi-display-reordering. Don't try to reorder while
loading loadup.el, as the necessary character property tables are
not yet available. */
it->bidi_p =
!redisplay__inhibit_bidi
&& !NILP (BVAR (&buffer_defaults, bidi_display_reordering));
if (s == NULL)
{
eassert (STRINGP (string));
it->string = string;
it->s = NULL;
it->end_charpos = it->string_nchars = SCHARS (string);
it->method = GET_FROM_STRING;
it->current.string_pos = string_pos (charpos, string);
if (it->bidi_p)
{
it->bidi_it.string.lstring = string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = it->end_charpos;
it->bidi_it.string.bufpos = 0;
it->bidi_it.string.from_disp_str = false;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (charpos, IT_STRING_BYTEPOS (*it),
FRAME_WINDOW_P (it->f), &it->bidi_it);
}
}
else
{
it->s = (const unsigned char *) s;
it->string = Qnil;
/* Note that we use IT->current.pos, not it->current.string_pos,
for displaying C strings. */
IT_STRING_CHARPOS (*it) = IT_STRING_BYTEPOS (*it) = -1;
if (it->multibyte_p)
{
it->current.pos = c_string_pos (charpos, s, true);
it->end_charpos = it->string_nchars = number_of_chars (s, true);
}
else
{
IT_CHARPOS (*it) = IT_BYTEPOS (*it) = charpos;
it->end_charpos = it->string_nchars = strlen (s);
}
if (it->bidi_p)
{
it->bidi_it.string.lstring = Qnil;
it->bidi_it.string.s = (const unsigned char *) s;
it->bidi_it.string.schars = it->end_charpos;
it->bidi_it.string.bufpos = 0;
it->bidi_it.string.from_disp_str = false;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (charpos, IT_BYTEPOS (*it), FRAME_WINDOW_P (it->f),
&it->bidi_it);
}
it->method = GET_FROM_C_STRING;
}
/* PRECISION > 0 means don't return more than PRECISION characters
from the string. */
if (precision > 0 && it->end_charpos - charpos > precision)
{
it->end_charpos = it->string_nchars = charpos + precision;
if (it->bidi_p)
it->bidi_it.string.schars = it->end_charpos;
}
/* FIELD_WIDTH > 0 means pad with spaces until FIELD_WIDTH
characters have been returned. FIELD_WIDTH == 0 means don't pad,
FIELD_WIDTH < 0 means infinite field width. This is useful for
padding with `-' at the end of a mode line. */
if (field_width < 0)
field_width = INFINITY;
/* Implementation note: We deliberately don't enlarge
it->bidi_it.string.schars here to fit it->end_charpos, because
the bidi iterator cannot produce characters out of thin air. */
if (field_width > it->end_charpos - charpos)
it->end_charpos = charpos + field_width;
/* Use the standard display table for displaying strings. */
if (DISP_TABLE_P (Vstandard_display_table))
it->dp = XCHAR_TABLE (Vstandard_display_table);
it->stop_charpos = charpos;
it->prev_stop = charpos;
it->base_level_stop = 0;
if (it->bidi_p)
{
it->bidi_it.first_elt = true;
it->bidi_it.paragraph_dir = NEUTRAL_DIR;
it->bidi_it.disp_pos = -1;
}
if (s == NULL && it->multibyte_p)
{
ptrdiff_t endpos = SCHARS (it->string);
if (endpos > it->end_charpos)
endpos = it->end_charpos;
composition_compute_stop_pos (&it->cmp_it, charpos, -1, endpos,
it->string);
}
CHECK_IT (it);
}
\f
/***********************************************************************
Iteration
***********************************************************************/
/* Map enum it_method value to corresponding next_element_from_* function. */
typedef bool (*next_element_function) (struct it *);
static next_element_function const get_next_element[NUM_IT_METHODS] =
{
next_element_from_buffer,
next_element_from_display_vector,
next_element_from_string,
next_element_from_c_string,
next_element_from_image,
next_element_from_stretch,
next_element_from_xwidget,
};
#define GET_NEXT_DISPLAY_ELEMENT(it) (*get_next_element[(it)->method]) (it)
/* Return true iff a character at CHARPOS (and BYTEPOS) is composed
(possibly with the following characters). */
#define CHAR_COMPOSED_P(IT,CHARPOS,BYTEPOS,END_CHARPOS) \
((IT)->cmp_it.id >= 0 \
|| ((IT)->cmp_it.stop_pos == (CHARPOS) \
&& composition_reseat_it (&(IT)->cmp_it, CHARPOS, BYTEPOS, \
END_CHARPOS, (IT)->w, \
FACE_FROM_ID_OR_NULL ((IT)->f, \
(IT)->face_id), \
(IT)->string)))
/* Lookup the char-table Vglyphless_char_display for character C (-1
if we want information for no-font case), and return the display
method symbol. By side-effect, update it->what and
it->glyphless_method. This function is called from
get_next_display_element for each character element, and from
x_produce_glyphs when no suitable font was found. */
Lisp_Object
lookup_glyphless_char_display (int c, struct it *it)
{
Lisp_Object glyphless_method = Qnil;
if (CHAR_TABLE_P (Vglyphless_char_display)
&& CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (Vglyphless_char_display)) >= 1)
{
if (c >= 0)
{
glyphless_method = CHAR_TABLE_REF (Vglyphless_char_display, c);
if (CONSP (glyphless_method))
glyphless_method = FRAME_WINDOW_P (it->f)
? XCAR (glyphless_method)
: XCDR (glyphless_method);
}
else
glyphless_method = XCHAR_TABLE (Vglyphless_char_display)->extras[0];
}
retry:
if (NILP (glyphless_method))
{
if (c >= 0)
/* The default is to display the character by a proper font. */
return Qnil;
/* The default for the no-font case is to display an empty box. */
glyphless_method = Qempty_box;
}
if (EQ (glyphless_method, Qzero_width))
{
if (c >= 0)
return glyphless_method;
/* This method can't be used for the no-font case. */
glyphless_method = Qempty_box;
}
if (EQ (glyphless_method, Qthin_space))
it->glyphless_method = GLYPHLESS_DISPLAY_THIN_SPACE;
else if (EQ (glyphless_method, Qempty_box))
it->glyphless_method = GLYPHLESS_DISPLAY_EMPTY_BOX;
else if (EQ (glyphless_method, Qhex_code))
it->glyphless_method = GLYPHLESS_DISPLAY_HEX_CODE;
else if (STRINGP (glyphless_method))
it->glyphless_method = GLYPHLESS_DISPLAY_ACRONYM;
else
{
/* Invalid value. We use the default method. */
glyphless_method = Qnil;
goto retry;
}
it->what = IT_GLYPHLESS;
return glyphless_method;
}
/* Merge escape glyph face and cache the result. */
static struct frame *last_escape_glyph_frame = NULL;
static int last_escape_glyph_face_id = (1 << FACE_ID_BITS);
static int last_escape_glyph_merged_face_id = 0;
static int
merge_escape_glyph_face (struct it *it)
{
int face_id;
if (it->f == last_escape_glyph_frame
&& it->face_id == last_escape_glyph_face_id)
face_id = last_escape_glyph_merged_face_id;
else
{
/* Merge the `escape-glyph' face into the current face. */
face_id = merge_faces (it->f, Qescape_glyph, 0, it->face_id);
last_escape_glyph_frame = it->f;
last_escape_glyph_face_id = it->face_id;
last_escape_glyph_merged_face_id = face_id;
}
return face_id;
}
/* Likewise for glyphless glyph face. */
static struct frame *last_glyphless_glyph_frame = NULL;
static int last_glyphless_glyph_face_id = (1 << FACE_ID_BITS);
static int last_glyphless_glyph_merged_face_id = 0;
int
merge_glyphless_glyph_face (struct it *it)
{
int face_id;
if (it->f == last_glyphless_glyph_frame
&& it->face_id == last_glyphless_glyph_face_id)
face_id = last_glyphless_glyph_merged_face_id;
else
{
/* Merge the `glyphless-char' face into the current face. */
face_id = merge_faces (it->f, Qglyphless_char, 0, it->face_id);
last_glyphless_glyph_frame = it->f;
last_glyphless_glyph_face_id = it->face_id;
last_glyphless_glyph_merged_face_id = face_id;
}
return face_id;
}
/* Forget the `escape-glyph' and `glyphless-char' faces. This should
be called before redisplaying windows, and when the frame's face
cache is freed. */
void
forget_escape_and_glyphless_faces (void)
{
last_escape_glyph_frame = NULL;
last_escape_glyph_face_id = (1 << FACE_ID_BITS);
last_glyphless_glyph_frame = NULL;
last_glyphless_glyph_face_id = (1 << FACE_ID_BITS);
}
/* Load IT's display element fields with information about the next
display element from the current position of IT. Value is false if
end of buffer (or C string) is reached. */
static bool
get_next_display_element (struct it *it)
{
/* True means that we found a display element. False means that
we hit the end of what we iterate over. Performance note: the
function pointer `method' used here turns out to be faster than
using a sequence of if-statements. */
bool success_p;
get_next:
success_p = GET_NEXT_DISPLAY_ELEMENT (it);
if (it->what == IT_CHARACTER)
{
/* UAX#9, L4: "A character is depicted by a mirrored glyph if
and only if (a) the resolved directionality of that character
is R..." */
/* FIXME: Do we need an exception for characters from display
tables? */
if (it->bidi_p && it->bidi_it.type == STRONG_R
&& !inhibit_bidi_mirroring)
it->c = bidi_mirror_char (it->c);
/* Map via display table or translate control characters.
IT->c, IT->len etc. have been set to the next character by
the function call above. If we have a display table, and it
contains an entry for IT->c, translate it. Don't do this if
IT->c itself comes from a display table, otherwise we could
end up in an infinite recursion. (An alternative could be to
count the recursion depth of this function and signal an
error when a certain maximum depth is reached.) Is it worth
it? */
if (success_p && it->dpvec == NULL)
{
Lisp_Object dv;
struct charset *unibyte = CHARSET_FROM_ID (charset_unibyte);
bool nonascii_space_p = false;
bool nonascii_hyphen_p = false;
int c = it->c; /* This is the character to display. */
if (! it->multibyte_p && ! ASCII_CHAR_P (c))
{
eassert (SINGLE_BYTE_CHAR_P (c));
if (unibyte_display_via_language_environment)
{
c = DECODE_CHAR (unibyte, c);
if (c < 0)
c = BYTE8_TO_CHAR (it->c);
}
else
c = BYTE8_TO_CHAR (it->c);
}
if (it->dp
&& (dv = DISP_CHAR_VECTOR (it->dp, c),
VECTORP (dv)))
{
struct Lisp_Vector *v = XVECTOR (dv);
/* Return the first character from the display table
entry, if not empty. If empty, don't display the
current character. */
if (v->header.size)
{
it->dpvec_char_len = it->len;
it->dpvec = v->contents;
it->dpend = v->contents + v->header.size;
it->current.dpvec_index = 0;
it->dpvec_face_id = -1;
it->saved_face_id = it->face_id;
it->method = GET_FROM_DISPLAY_VECTOR;
it->ellipsis_p = false;
}
else
{
set_iterator_to_next (it, false);
}
goto get_next;
}
if (! NILP (lookup_glyphless_char_display (c, it)))
{
if (it->what == IT_GLYPHLESS)
goto done;
/* Don't display this character. */
set_iterator_to_next (it, false);
goto get_next;
}
/* If `nobreak-char-display' is non-nil, we display
non-ASCII spaces and hyphens specially. */
if (! ASCII_CHAR_P (c) && ! NILP (Vnobreak_char_display))
{
if (c == NO_BREAK_SPACE)
nonascii_space_p = true;
else if (c == SOFT_HYPHEN || c == HYPHEN
|| c == NON_BREAKING_HYPHEN)
nonascii_hyphen_p = true;
}
/* Translate control characters into `\003' or `^C' form.
Control characters coming from a display table entry are
currently not translated because we use IT->dpvec to hold
the translation. This could easily be changed but I
don't believe that it is worth doing.
The characters handled by `nobreak-char-display' must be
translated too.
Non-printable characters and raw-byte characters are also
translated to octal form. */
if (((c < ' ' || c == 127) /* ASCII control chars. */
? (it->area != TEXT_AREA
/* In mode line, treat \n, \t like other crl chars. */
|| (c != '\t'
&& it->glyph_row
&& (it->glyph_row->mode_line_p || it->avoid_cursor_p))
|| (c != '\n' && c != '\t'))
: (nonascii_space_p
|| nonascii_hyphen_p
|| CHAR_BYTE8_P (c)
|| ! CHAR_PRINTABLE_P (c))))
{
/* C is a control character, non-ASCII space/hyphen,
raw-byte, or a non-printable character which must be
displayed either as '\003' or as `^C' where the '\\'
and '^' can be defined in the display table. Fill
IT->ctl_chars with glyphs for what we have to
display. Then, set IT->dpvec to these glyphs. */
Lisp_Object gc;
int ctl_len;
int face_id;
int lface_id = 0;
int escape_glyph;
/* Handle control characters with ^. */
if (ASCII_CHAR_P (c) && it->ctl_arrow_p)
{
int g;
g = '^'; /* default glyph for Control */
/* Set IT->ctl_chars[0] to the glyph for `^'. */
if (it->dp
&& (gc = DISP_CTRL_GLYPH (it->dp), GLYPH_CODE_P (gc)))
{
g = GLYPH_CODE_CHAR (gc);
lface_id = GLYPH_CODE_FACE (gc);
}
face_id = (lface_id
? merge_faces (it->f, Qt, lface_id, it->face_id)
: merge_escape_glyph_face (it));
XSETINT (it->ctl_chars[0], g);
XSETINT (it->ctl_chars[1], c ^ 0100);
ctl_len = 2;
goto display_control;
}
/* Handle non-ascii space in the mode where it only gets
highlighting. */
if (nonascii_space_p && EQ (Vnobreak_char_display, Qt))
{
/* Merge `nobreak-space' into the current face. */
face_id = merge_faces (it->f, Qnobreak_space, 0,
it->face_id);
XSETINT (it->ctl_chars[0], ' ');
ctl_len = 1;
goto display_control;
}
/* Handle non-ascii hyphens in the mode where it only
gets highlighting. */
if (nonascii_hyphen_p && EQ (Vnobreak_char_display, Qt))
{
/* Merge `nobreak-space' into the current face. */
face_id = merge_faces (it->f, Qnobreak_hyphen, 0,
it->face_id);
XSETINT (it->ctl_chars[0], '-');
ctl_len = 1;
goto display_control;
}
/* Handle sequences that start with the "escape glyph". */
/* the default escape glyph is \. */
escape_glyph = '\\';
if (it->dp
&& (gc = DISP_ESCAPE_GLYPH (it->dp), GLYPH_CODE_P (gc)))
{
escape_glyph = GLYPH_CODE_CHAR (gc);
lface_id = GLYPH_CODE_FACE (gc);
}
face_id = (lface_id
? merge_faces (it->f, Qt, lface_id, it->face_id)
: merge_escape_glyph_face (it));
/* Draw non-ASCII space/hyphen with escape glyph: */
if (nonascii_space_p || nonascii_hyphen_p)
{
XSETINT (it->ctl_chars[0], escape_glyph);
XSETINT (it->ctl_chars[1], nonascii_space_p ? ' ' : '-');
ctl_len = 2;
goto display_control;
}
{
char str[10];
int len, i;
if (CHAR_BYTE8_P (c))
/* Display \200 instead of \17777600. */
c = CHAR_TO_BYTE8 (c);
len = sprintf (str, "%03o", c + 0u);
XSETINT (it->ctl_chars[0], escape_glyph);
for (i = 0; i < len; i++)
XSETINT (it->ctl_chars[i + 1], str[i]);
ctl_len = len + 1;
}
display_control:
/* Set up IT->dpvec and return first character from it. */
it->dpvec_char_len = it->len;
it->dpvec = it->ctl_chars;
it->dpend = it->dpvec + ctl_len;
it->current.dpvec_index = 0;
it->dpvec_face_id = face_id;
it->saved_face_id = it->face_id;
it->method = GET_FROM_DISPLAY_VECTOR;
it->ellipsis_p = false;
goto get_next;
}
it->char_to_display = c;
}
else if (success_p)
{
it->char_to_display = it->c;
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* Adjust face id for a multibyte character. There are no multibyte
character in unibyte text. */
if ((it->what == IT_CHARACTER || it->what == IT_COMPOSITION)
&& it->multibyte_p
&& success_p
&& FRAME_WINDOW_P (it->f))
{
struct face *face = FACE_FROM_ID (it->f, it->face_id);
if (it->what == IT_COMPOSITION && it->cmp_it.ch >= 0)
{
/* Automatic composition with glyph-string. */
Lisp_Object gstring = composition_gstring_from_id (it->cmp_it.id);
it->face_id = face_for_font (it->f, LGSTRING_FONT (gstring), face);
}
else
{
ptrdiff_t pos = (it->s ? -1
: STRINGP (it->string) ? IT_STRING_CHARPOS (*it)
: IT_CHARPOS (*it));
int c;
if (it->what == IT_CHARACTER)
c = it->char_to_display;
else
{
struct composition *cmp = composition_table[it->cmp_it.id];
int i;
c = ' ';
for (i = 0; i < cmp->glyph_len; i++)
/* TAB in a composition means display glyphs with
padding space on the left or right. */
if ((c = COMPOSITION_GLYPH (cmp, i)) != '\t')
break;
}
it->face_id = FACE_FOR_CHAR (it->f, face, c, pos, it->string);
}
}
#endif /* HAVE_WINDOW_SYSTEM */
done:
/* Is this character the last one of a run of characters with
box? If yes, set IT->end_of_box_run_p to true. */
if (it->face_box_p
&& it->s == NULL)
{
if (it->method == GET_FROM_STRING && it->sp)
{
int face_id = underlying_face_id (it);
struct face *face = FACE_FROM_ID_OR_NULL (it->f, face_id);
if (face)
{
if (face->box == FACE_NO_BOX)
{
/* If the box comes from face properties in a
display string, check faces in that string. */
int string_face_id = face_after_it_pos (it);
it->end_of_box_run_p
= (FACE_FROM_ID (it->f, string_face_id)->box
== FACE_NO_BOX);
}
/* Otherwise, the box comes from the underlying face.
If this is the last string character displayed, check
the next buffer location. */
else if ((IT_STRING_CHARPOS (*it) >= SCHARS (it->string) - 1)
/* n_overlay_strings is unreliable unless
overlay_string_index is non-negative. */
&& ((it->current.overlay_string_index >= 0
&& (it->current.overlay_string_index
== it->n_overlay_strings - 1))
/* A string from display property. */
|| it->from_disp_prop_p))
{
ptrdiff_t ignore;
int next_face_id;
bool text_from_string = false;
/* Normally, the next buffer location is stored in
IT->current.pos... */
struct text_pos pos = it->current.pos;
/* ...but for a string from a display property, the
next buffer position is stored in the 'position'
member of the iteration stack slot below the
current one, see handle_single_display_spec. By
contrast, it->current.pos was not yet updated to
point to that buffer position; that will happen
in pop_it, after we finish displaying the current
string. Note that we already checked above that
it->sp is positive, so subtracting one from it is
safe. */
if (it->from_disp_prop_p)
{
int stackp = it->sp - 1;
/* Find the stack level with data from buffer. */
while (stackp >= 0
&& STRINGP ((it->stack + stackp)->string))
stackp--;
if (stackp < 0)
{
/* If no stack slot was found for iterating
a buffer, we are displaying text from a
string, most probably the mode line or
the header line, and that string has a
display string on some of its
characters. */
text_from_string = true;
pos = it->stack[it->sp - 1].position;
}
else
pos = (it->stack + stackp)->position;
}
else
INC_TEXT_POS (pos, it->multibyte_p);
if (text_from_string)
{
Lisp_Object base_string = it->stack[it->sp - 1].string;
if (CHARPOS (pos) >= SCHARS (base_string) - 1)
it->end_of_box_run_p = true;
else
{
next_face_id
= face_at_string_position (it->w, base_string,
CHARPOS (pos), 0,
&ignore, face_id, false);
it->end_of_box_run_p
= (FACE_FROM_ID (it->f, next_face_id)->box
== FACE_NO_BOX);
}
}
else if (CHARPOS (pos) >= ZV)
it->end_of_box_run_p = true;
else
{
next_face_id =
face_at_buffer_position (it->w, CHARPOS (pos), &ignore,
CHARPOS (pos)
+ TEXT_PROP_DISTANCE_LIMIT,
false, -1);
it->end_of_box_run_p
= (FACE_FROM_ID (it->f, next_face_id)->box
== FACE_NO_BOX);
}
}
}
}
/* next_element_from_display_vector sets this flag according to
faces of the display vector glyphs, see there. */
else if (it->method != GET_FROM_DISPLAY_VECTOR)
{
int face_id = face_after_it_pos (it);
it->end_of_box_run_p
= (face_id != it->face_id
&& FACE_FROM_ID (it->f, face_id)->box == FACE_NO_BOX);
}
}
/* If we reached the end of the object we've been iterating (e.g., a
display string or an overlay string), and there's something on
IT->stack, proceed with what's on the stack. It doesn't make
sense to return false if there's unprocessed stuff on the stack,
because otherwise that stuff will never be displayed. */
if (!success_p && it->sp > 0)
{
set_iterator_to_next (it, false);
success_p = get_next_display_element (it);
}
/* Value is false if end of buffer or string reached. */
return success_p;
}
/* Move IT to the next display element.
RESEAT_P means if called on a newline in buffer text,
skip to the next visible line start.
Functions get_next_display_element and set_iterator_to_next are
separate because I find this arrangement easier to handle than a
get_next_display_element function that also increments IT's
position. The way it is we can first look at an iterator's current
display element, decide whether it fits on a line, and if it does,
increment the iterator position. The other way around we probably
would either need a flag indicating whether the iterator has to be
incremented the next time, or we would have to implement a
decrement position function which would not be easy to write. */
void
set_iterator_to_next (struct it *it, bool reseat_p)
{
/* Reset flags indicating start and end of a sequence of characters
with box. Reset them at the start of this function because
moving the iterator to a new position might set them. */
it->start_of_box_run_p = it->end_of_box_run_p = false;
switch (it->method)
{
case GET_FROM_BUFFER:
/* The current display element of IT is a character from
current_buffer. Advance in the buffer, and maybe skip over
invisible lines that are so because of selective display. */
if (ITERATOR_AT_END_OF_LINE_P (it) && reseat_p)
reseat_at_next_visible_line_start (it, false);
else if (it->cmp_it.id >= 0)
{
/* We are currently getting glyphs from a composition. */
if (! it->bidi_p)
{
IT_CHARPOS (*it) += it->cmp_it.nchars;
IT_BYTEPOS (*it) += it->cmp_it.nbytes;
}
else
{
int i;
/* Update IT's char/byte positions to point to the first
character of the next grapheme cluster, or to the
character visually after the current composition. */
for (i = 0; i < it->cmp_it.nchars; i++)
bidi_move_to_visually_next (&it->bidi_it);
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
IT_CHARPOS (*it) = it->bidi_it.charpos;
}
if ((! it->bidi_p || ! it->cmp_it.reversed_p)
&& it->cmp_it.to < it->cmp_it.nglyphs)
{
/* Composition created while scanning forward. Proceed
to the next grapheme cluster. */
it->cmp_it.from = it->cmp_it.to;
}
else if ((it->bidi_p && it->cmp_it.reversed_p)
&& it->cmp_it.from > 0)
{
/* Composition created while scanning backward. Proceed
to the previous grapheme cluster. */
it->cmp_it.to = it->cmp_it.from;
}
else
{
/* No more grapheme clusters in this composition.
Find the next stop position. */
ptrdiff_t stop = it->end_charpos;
if (it->bidi_it.scan_dir < 0)
/* Now we are scanning backward and don't know
where to stop. */
stop = -1;
composition_compute_stop_pos (&it->cmp_it, IT_CHARPOS (*it),
IT_BYTEPOS (*it), stop, Qnil);
}
}
else
{
eassert (it->len != 0);
if (!it->bidi_p)
{
IT_BYTEPOS (*it) += it->len;
IT_CHARPOS (*it) += 1;
}
else
{
int prev_scan_dir = it->bidi_it.scan_dir;
/* If this is a new paragraph, determine its base
direction (a.k.a. its base embedding level). */
if (it->bidi_it.new_paragraph)
bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it,
false);
bidi_move_to_visually_next (&it->bidi_it);
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
IT_CHARPOS (*it) = it->bidi_it.charpos;
if (prev_scan_dir != it->bidi_it.scan_dir)
{
/* As the scan direction was changed, we must
re-compute the stop position for composition. */
ptrdiff_t stop = it->end_charpos;
if (it->bidi_it.scan_dir < 0)
stop = -1;
composition_compute_stop_pos (&it->cmp_it, IT_CHARPOS (*it),
IT_BYTEPOS (*it), stop, Qnil);
}
}
eassert (IT_BYTEPOS (*it) == CHAR_TO_BYTE (IT_CHARPOS (*it)));
}
break;
case GET_FROM_C_STRING:
/* Current display element of IT is from a C string. */
if (!it->bidi_p
/* If the string position is beyond string's end, it means
next_element_from_c_string is padding the string with
blanks, in which case we bypass the bidi iterator,
because it cannot deal with such virtual characters. */
|| IT_CHARPOS (*it) >= it->bidi_it.string.schars)
{
IT_BYTEPOS (*it) += it->len;
IT_CHARPOS (*it) += 1;
}
else
{
bidi_move_to_visually_next (&it->bidi_it);
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
IT_CHARPOS (*it) = it->bidi_it.charpos;
}
break;
case GET_FROM_DISPLAY_VECTOR:
/* Current display element of IT is from a display table entry.
Advance in the display table definition. Reset it to null if
end reached, and continue with characters from buffers/
strings. */
++it->current.dpvec_index;
/* Restore face of the iterator to what they were before the
display vector entry (these entries may contain faces). */
it->face_id = it->saved_face_id;
if (it->dpvec + it->current.dpvec_index >= it->dpend)
{
bool recheck_faces = it->ellipsis_p;
if (it->s)
it->method = GET_FROM_C_STRING;
else if (STRINGP (it->string))
it->method = GET_FROM_STRING;
else
{
it->method = GET_FROM_BUFFER;
it->object = it->w->contents;
}
it->dpvec = NULL;
it->current.dpvec_index = -1;
/* Skip over characters which were displayed via IT->dpvec. */
if (it->dpvec_char_len < 0)
reseat_at_next_visible_line_start (it, true);
else if (it->dpvec_char_len > 0)
{
it->len = it->dpvec_char_len;
set_iterator_to_next (it, reseat_p);
}
/* Maybe recheck faces after display vector. */
if (recheck_faces)
{
if (it->method == GET_FROM_STRING)
it->stop_charpos = IT_STRING_CHARPOS (*it);
else
it->stop_charpos = IT_CHARPOS (*it);
}
}
break;
case GET_FROM_STRING:
/* Current display element is a character from a Lisp string. */
eassert (it->s == NULL && STRINGP (it->string));
/* Don't advance past string end. These conditions are true
when set_iterator_to_next is called at the end of
get_next_display_element, in which case the Lisp string is
already exhausted, and all we want is pop the iterator
stack. */
if (it->current.overlay_string_index >= 0)
{
/* This is an overlay string, so there's no padding with
spaces, and the number of characters in the string is
where the string ends. */
if (IT_STRING_CHARPOS (*it) >= SCHARS (it->string))
goto consider_string_end;
}
else
{
/* Not an overlay string. There could be padding, so test
against it->end_charpos. */
if (IT_STRING_CHARPOS (*it) >= it->end_charpos)
goto consider_string_end;
}
if (it->cmp_it.id >= 0)
{
/* We are delivering display elements from a composition.
Update the string position past the grapheme cluster
we've just processed. */
if (! it->bidi_p)
{
IT_STRING_CHARPOS (*it) += it->cmp_it.nchars;
IT_STRING_BYTEPOS (*it) += it->cmp_it.nbytes;
}
else
{
int i;
for (i = 0; i < it->cmp_it.nchars; i++)
bidi_move_to_visually_next (&it->bidi_it);
IT_STRING_BYTEPOS (*it) = it->bidi_it.bytepos;
IT_STRING_CHARPOS (*it) = it->bidi_it.charpos;
}
/* Did we exhaust all the grapheme clusters of this
composition? */
if ((! it->bidi_p || ! it->cmp_it.reversed_p)
&& (it->cmp_it.to < it->cmp_it.nglyphs))
{
/* Not all the grapheme clusters were processed yet;
advance to the next cluster. */
it->cmp_it.from = it->cmp_it.to;
}
else if ((it->bidi_p && it->cmp_it.reversed_p)
&& it->cmp_it.from > 0)
{
/* Likewise: advance to the next cluster, but going in
the reverse direction. */
it->cmp_it.to = it->cmp_it.from;
}
else
{
/* This composition was fully processed; find the next
candidate place for checking for composed
characters. */
/* Always limit string searches to the string length;
any padding spaces are not part of the string, and
there cannot be any compositions in that padding. */
ptrdiff_t stop = SCHARS (it->string);
if (it->bidi_p && it->bidi_it.scan_dir < 0)
stop = -1;
else if (it->end_charpos < stop)
{
/* Cf. PRECISION in reseat_to_string: we might be
limited in how many of the string characters we
need to deliver. */
stop = it->end_charpos;
}
composition_compute_stop_pos (&it->cmp_it,
IT_STRING_CHARPOS (*it),
IT_STRING_BYTEPOS (*it), stop,
it->string);
}
}
else
{
if (!it->bidi_p
/* If the string position is beyond string's end, it
means next_element_from_string is padding the string
with blanks, in which case we bypass the bidi
iterator, because it cannot deal with such virtual
characters. */
|| IT_STRING_CHARPOS (*it) >= it->bidi_it.string.schars)
{
IT_STRING_BYTEPOS (*it) += it->len;
IT_STRING_CHARPOS (*it) += 1;
}
else
{
int prev_scan_dir = it->bidi_it.scan_dir;
bidi_move_to_visually_next (&it->bidi_it);
IT_STRING_BYTEPOS (*it) = it->bidi_it.bytepos;
IT_STRING_CHARPOS (*it) = it->bidi_it.charpos;
/* If the scan direction changes, we may need to update
the place where to check for composed characters. */
if (prev_scan_dir != it->bidi_it.scan_dir)
{
ptrdiff_t stop = SCHARS (it->string);
if (it->bidi_it.scan_dir < 0)
stop = -1;
else if (it->end_charpos < stop)
stop = it->end_charpos;
composition_compute_stop_pos (&it->cmp_it,
IT_STRING_CHARPOS (*it),
IT_STRING_BYTEPOS (*it), stop,
it->string);
}
}
}
consider_string_end:
if (it->current.overlay_string_index >= 0)
{
/* IT->string is an overlay string. Advance to the
next, if there is one. */
if (IT_STRING_CHARPOS (*it) >= SCHARS (it->string))
{
it->ellipsis_p = false;
next_overlay_string (it);
if (it->ellipsis_p)
setup_for_ellipsis (it, 0);
}
}
else
{
/* IT->string is not an overlay string. If we reached
its end, and there is something on IT->stack, proceed
with what is on the stack. This can be either another
string, this time an overlay string, or a buffer. */
if (IT_STRING_CHARPOS (*it) == SCHARS (it->string)
&& it->sp > 0)
{
pop_it (it);
if (it->method == GET_FROM_STRING)
goto consider_string_end;
}
}
break;
case GET_FROM_IMAGE:
case GET_FROM_STRETCH:
case GET_FROM_XWIDGET:
/* The position etc with which we have to proceed are on
the stack. The position may be at the end of a string,
if the `display' property takes up the whole string. */
eassert (it->sp > 0);
pop_it (it);
if (it->method == GET_FROM_STRING)
goto consider_string_end;
break;
default:
/* There are no other methods defined, so this should be a bug. */
emacs_abort ();
}
eassert (it->method != GET_FROM_STRING
|| (STRINGP (it->string)
&& IT_STRING_CHARPOS (*it) >= 0));
}
/* Load IT's display element fields with information about the next
display element which comes from a display table entry or from the
result of translating a control character to one of the forms `^C'
or `\003'.
IT->dpvec holds the glyphs to return as characters.
IT->saved_face_id holds the face id before the display vector--it
is restored into IT->face_id in set_iterator_to_next. */
static bool
next_element_from_display_vector (struct it *it)
{
Lisp_Object gc;
int prev_face_id = it->face_id;
int next_face_id;
/* Precondition. */
eassert (it->dpvec && it->current.dpvec_index >= 0);
it->face_id = it->saved_face_id;
/* KFS: This code used to check ip->dpvec[0] instead of the current element.
That seemed totally bogus - so I changed it... */
gc = it->dpvec[it->current.dpvec_index];
if (GLYPH_CODE_P (gc))
{
struct face *this_face, *prev_face, *next_face;
it->c = GLYPH_CODE_CHAR (gc);
it->len = CHAR_BYTES (it->c);
/* The entry may contain a face id to use. Such a face id is
the id of a Lisp face, not a realized face. A face id of
zero means no face is specified. */
if (it->dpvec_face_id >= 0)
it->face_id = it->dpvec_face_id;
else
{
int lface_id = GLYPH_CODE_FACE (gc);
if (lface_id > 0)
it->face_id = merge_faces (it->f, Qt, lface_id,
it->saved_face_id);
}
/* Glyphs in the display vector could have the box face, so we
need to set the related flags in the iterator, as
appropriate. */
this_face = FACE_FROM_ID_OR_NULL (it->f, it->face_id);
prev_face = FACE_FROM_ID_OR_NULL (it->f, prev_face_id);
/* Is this character the first character of a box-face run? */
it->start_of_box_run_p = (this_face && this_face->box != FACE_NO_BOX
&& (!prev_face
|| prev_face->box == FACE_NO_BOX));
/* For the last character of the box-face run, we need to look
either at the next glyph from the display vector, or at the
face we saw before the display vector. */
next_face_id = it->saved_face_id;
if (it->current.dpvec_index < it->dpend - it->dpvec - 1)
{
if (it->dpvec_face_id >= 0)
next_face_id = it->dpvec_face_id;
else
{
int lface_id =
GLYPH_CODE_FACE (it->dpvec[it->current.dpvec_index + 1]);
if (lface_id > 0)
next_face_id = merge_faces (it->f, Qt, lface_id,
it->saved_face_id);
}
}
next_face = FACE_FROM_ID_OR_NULL (it->f, next_face_id);
it->end_of_box_run_p = (this_face && this_face->box != FACE_NO_BOX
&& (!next_face
|| next_face->box == FACE_NO_BOX));
it->face_box_p = this_face && this_face->box != FACE_NO_BOX;
}
else
/* Display table entry is invalid. Return a space. */
it->c = ' ', it->len = 1;
/* Don't change position and object of the iterator here. They are
still the values of the character that had this display table
entry or was translated, and that's what we want. */
it->what = IT_CHARACTER;
return true;
}
/* Get the first element of string/buffer in the visual order, after
being reseated to a new position in a string or a buffer. */
static void
get_visually_first_element (struct it *it)
{
bool string_p = STRINGP (it->string) || it->s;
ptrdiff_t eob = (string_p ? it->bidi_it.string.schars : ZV);
ptrdiff_t bob = (string_p ? 0 : BEGV);
if (STRINGP (it->string))
{
it->bidi_it.charpos = IT_STRING_CHARPOS (*it);
it->bidi_it.bytepos = IT_STRING_BYTEPOS (*it);
}
else
{
it->bidi_it.charpos = IT_CHARPOS (*it);
it->bidi_it.bytepos = IT_BYTEPOS (*it);
}
if (it->bidi_it.charpos == eob)
{
/* Nothing to do, but reset the FIRST_ELT flag, like
bidi_paragraph_init does, because we are not going to
call it. */
it->bidi_it.first_elt = false;
}
else if (it->bidi_it.charpos == bob
|| (!string_p
&& (FETCH_CHAR (it->bidi_it.bytepos - 1) == '\n'
|| FETCH_CHAR (it->bidi_it.bytepos) == '\n')))
{
/* If we are at the beginning of a line/string, we can produce
the next element right away. */
bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it, true);
bidi_move_to_visually_next (&it->bidi_it);
}
else
{
ptrdiff_t orig_bytepos = it->bidi_it.bytepos;
/* We need to prime the bidi iterator starting at the line's or
string's beginning, before we will be able to produce the
next element. */
if (string_p)
it->bidi_it.charpos = it->bidi_it.bytepos = 0;
else
it->bidi_it.charpos = find_newline_no_quit (IT_CHARPOS (*it),
IT_BYTEPOS (*it), -1,
&it->bidi_it.bytepos);
bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it, true);
do
{
/* Now return to buffer/string position where we were asked
to get the next display element, and produce that. */
bidi_move_to_visually_next (&it->bidi_it);
}
while (it->bidi_it.bytepos != orig_bytepos
&& it->bidi_it.charpos < eob);
}
/* Adjust IT's position information to where we ended up. */
if (STRINGP (it->string))
{
IT_STRING_CHARPOS (*it) = it->bidi_it.charpos;
IT_STRING_BYTEPOS (*it) = it->bidi_it.bytepos;
}
else
{
IT_CHARPOS (*it) = it->bidi_it.charpos;
IT_BYTEPOS (*it) = it->bidi_it.bytepos;
}
if (STRINGP (it->string) || !it->s)
{
ptrdiff_t stop, charpos, bytepos;
if (STRINGP (it->string))
{
eassert (!it->s);
stop = SCHARS (it->string);
if (stop > it->end_charpos)
stop = it->end_charpos;
charpos = IT_STRING_CHARPOS (*it);
bytepos = IT_STRING_BYTEPOS (*it);
}
else
{
stop = it->end_charpos;
charpos = IT_CHARPOS (*it);
bytepos = IT_BYTEPOS (*it);
}
if (it->bidi_it.scan_dir < 0)
stop = -1;
composition_compute_stop_pos (&it->cmp_it, charpos, bytepos, stop,
it->string);
}
}
/* Load IT with the next display element from Lisp string IT->string.
IT->current.string_pos is the current position within the string.
If IT->current.overlay_string_index >= 0, the Lisp string is an
overlay string. */
static bool
next_element_from_string (struct it *it)
{
struct text_pos position;
eassert (STRINGP (it->string));
eassert (!it->bidi_p || EQ (it->string, it->bidi_it.string.lstring));
eassert (IT_STRING_CHARPOS (*it) >= 0);
position = it->current.string_pos;
/* With bidi reordering, the character to display might not be the
character at IT_STRING_CHARPOS. BIDI_IT.FIRST_ELT means
that we were reseat()ed to a new string, whose paragraph
direction is not known. */
if (it->bidi_p && it->bidi_it.first_elt)
{
get_visually_first_element (it);
SET_TEXT_POS (position, IT_STRING_CHARPOS (*it), IT_STRING_BYTEPOS (*it));
}
/* Time to check for invisible text? */
if (IT_STRING_CHARPOS (*it) < it->end_charpos)
{
if (IT_STRING_CHARPOS (*it) >= it->stop_charpos)
{
if (!(!it->bidi_p
|| BIDI_AT_BASE_LEVEL (it->bidi_it)
|| IT_STRING_CHARPOS (*it) == it->stop_charpos))
{
/* With bidi non-linear iteration, we could find
ourselves far beyond the last computed stop_charpos,
with several other stop positions in between that we
missed. Scan them all now, in buffer's logical
order, until we find and handle the last stop_charpos
that precedes our current position. */
handle_stop_backwards (it, it->stop_charpos);
return GET_NEXT_DISPLAY_ELEMENT (it);
}
else
{
if (it->bidi_p)
{
/* Take note of the stop position we just moved
across, for when we will move back across it. */
it->prev_stop = it->stop_charpos;
/* If we are at base paragraph embedding level, take
note of the last stop position seen at this
level. */
if (BIDI_AT_BASE_LEVEL (it->bidi_it))
it->base_level_stop = it->stop_charpos;
}
handle_stop (it);
/* Since a handler may have changed IT->method, we must
recurse here. */
return GET_NEXT_DISPLAY_ELEMENT (it);
}
}
else if (it->bidi_p
/* If we are before prev_stop, we may have overstepped
on our way backwards a stop_pos, and if so, we need
to handle that stop_pos. */
&& IT_STRING_CHARPOS (*it) < it->prev_stop
/* We can sometimes back up for reasons that have nothing
to do with bidi reordering. E.g., compositions. The
code below is only needed when we are above the base
embedding level, so test for that explicitly. */
&& !BIDI_AT_BASE_LEVEL (it->bidi_it))
{
/* If we lost track of base_level_stop, we have no better
place for handle_stop_backwards to start from than string
beginning. This happens, e.g., when we were reseated to
the previous screenful of text by vertical-motion. */
if (it->base_level_stop <= 0
|| IT_STRING_CHARPOS (*it) < it->base_level_stop)
it->base_level_stop = 0;
handle_stop_backwards (it, it->base_level_stop);
return GET_NEXT_DISPLAY_ELEMENT (it);
}
}
if (it->current.overlay_string_index >= 0)
{
/* Get the next character from an overlay string. In overlay
strings, there is no field width or padding with spaces to
do. */
if (IT_STRING_CHARPOS (*it) >= SCHARS (it->string))
{
it->what = IT_EOB;
return false;
}
else if (CHAR_COMPOSED_P (it, IT_STRING_CHARPOS (*it),
IT_STRING_BYTEPOS (*it),
it->bidi_it.scan_dir < 0
? -1
: SCHARS (it->string))
&& next_element_from_composition (it))
{
return true;
}
else if (STRING_MULTIBYTE (it->string))
{
const unsigned char *s = (SDATA (it->string)
+ IT_STRING_BYTEPOS (*it));
it->c = string_char_and_length (s, &it->len);
}
else
{
it->c = SREF (it->string, IT_STRING_BYTEPOS (*it));
it->len = 1;
}
}
else
{
/* Get the next character from a Lisp string that is not an
overlay string. Such strings come from the mode line, for
example. We may have to pad with spaces, or truncate the
string. See also next_element_from_c_string. */
if (IT_STRING_CHARPOS (*it) >= it->end_charpos)
{
it->what = IT_EOB;
return false;
}
else if (IT_STRING_CHARPOS (*it) >= it->string_nchars)
{
/* Pad with spaces. */
it->c = ' ', it->len = 1;
CHARPOS (position) = BYTEPOS (position) = -1;
}
else if (CHAR_COMPOSED_P (it, IT_STRING_CHARPOS (*it),
IT_STRING_BYTEPOS (*it),
it->bidi_it.scan_dir < 0
? -1
: it->string_nchars)
&& next_element_from_composition (it))
{
return true;
}
else if (STRING_MULTIBYTE (it->string))
{
const unsigned char *s = (SDATA (it->string)
+ IT_STRING_BYTEPOS (*it));
it->c = string_char_and_length (s, &it->len);
}
else
{
it->c = SREF (it->string, IT_STRING_BYTEPOS (*it));
it->len = 1;
}
}
/* Record what we have and where it came from. */
it->what = IT_CHARACTER;
it->object = it->string;
it->position = position;
return true;
}
/* Load IT with next display element from C string IT->s.
IT->string_nchars is the maximum number of characters to return
from the string. IT->end_charpos may be greater than
IT->string_nchars when this function is called, in which case we
may have to return padding spaces. Value is false if end of string
reached, including padding spaces. */
static bool
next_element_from_c_string (struct it *it)
{
bool success_p = true;
eassert (it->s);
eassert (!it->bidi_p || it->s == it->bidi_it.string.s);
it->what = IT_CHARACTER;
BYTEPOS (it->position) = CHARPOS (it->position) = 0;
it->object = make_number (0);
/* With bidi reordering, the character to display might not be the
character at IT_CHARPOS. BIDI_IT.FIRST_ELT means that
we were reseated to a new string, whose paragraph direction is
not known. */
if (it->bidi_p && it->bidi_it.first_elt)
get_visually_first_element (it);
/* IT's position can be greater than IT->string_nchars in case a
field width or precision has been specified when the iterator was
initialized. */
if (IT_CHARPOS (*it) >= it->end_charpos)
{
/* End of the game. */
it->what = IT_EOB;
success_p = false;
}
else if (IT_CHARPOS (*it) >= it->string_nchars)
{
/* Pad with spaces. */
it->c = ' ', it->len = 1;
BYTEPOS (it->position) = CHARPOS (it->position) = -1;
}
else if (it->multibyte_p)
it->c = string_char_and_length (it->s + IT_BYTEPOS (*it), &it->len);
else
it->c = it->s[IT_BYTEPOS (*it)], it->len = 1;
return success_p;
}
/* Set up IT to return characters from an ellipsis, if appropriate.
The definition of the ellipsis glyphs may come from a display table
entry. This function fills IT with the first glyph from the
ellipsis if an ellipsis is to be displayed. */
static bool
next_element_from_ellipsis (struct it *it)
{
if (it->selective_display_ellipsis_p)
setup_for_ellipsis (it, it->len);
else
{
/* The face at the current position may be different from the
face we find after the invisible text. Remember what it
was in IT->saved_face_id, and signal that it's there by
setting face_before_selective_p. */
it->saved_face_id = it->face_id;
it->method = GET_FROM_BUFFER;
it->object = it->w->contents;
reseat_at_next_visible_line_start (it, true);
it->face_before_selective_p = true;
}
return GET_NEXT_DISPLAY_ELEMENT (it);
}
/* Deliver an image display element. The iterator IT is already
filled with image information (done in handle_display_prop). Value
is always true. */
static bool
next_element_from_image (struct it *it)
{
it->what = IT_IMAGE;
return true;
}
static bool
next_element_from_xwidget (struct it *it)
{
it->what = IT_XWIDGET;
return true;
}
/* Fill iterator IT with next display element from a stretch glyph
property. IT->object is the value of the text property. Value is
always true. */
static bool
next_element_from_stretch (struct it *it)
{
it->what = IT_STRETCH;
return true;
}
/* Scan backwards from IT's current position until we find a stop
position, or until BEGV. This is called when we find ourself
before both the last known prev_stop and base_level_stop while
reordering bidirectional text. */
static void
compute_stop_pos_backwards (struct it *it)
{
const int SCAN_BACK_LIMIT = 1000;
struct text_pos pos;
struct display_pos save_current = it->current;
struct text_pos save_position = it->position;
ptrdiff_t charpos = IT_CHARPOS (*it);
ptrdiff_t where_we_are = charpos;
ptrdiff_t save_stop_pos = it->stop_charpos;
ptrdiff_t save_end_pos = it->end_charpos;
eassert (NILP (it->string) && !it->s);
eassert (it->bidi_p);
it->bidi_p = false;
do
{
it->end_charpos = min (charpos + 1, ZV);
charpos = max (charpos - SCAN_BACK_LIMIT, BEGV);
SET_TEXT_POS (pos, charpos, CHAR_TO_BYTE (charpos));
reseat_1 (it, pos, false);
compute_stop_pos (it);
/* We must advance forward, right? */
if (it->stop_charpos <= charpos)
emacs_abort ();
}
while (charpos > BEGV && it->stop_charpos >= it->end_charpos);
if (it->stop_charpos <= where_we_are)
it->prev_stop = it->stop_charpos;
else
it->prev_stop = BEGV;
it->bidi_p = true;
it->current = save_current;
it->position = save_position;
it->stop_charpos = save_stop_pos;
it->end_charpos = save_end_pos;
}
/* Scan forward from CHARPOS in the current buffer/string, until we
find a stop position > current IT's position. Then handle the stop
position before that. This is called when we bump into a stop
position while reordering bidirectional text. CHARPOS should be
the last previously processed stop_pos (or BEGV/0, if none were
processed yet) whose position is less that IT's current
position. */
static void
handle_stop_backwards (struct it *it, ptrdiff_t charpos)
{
bool bufp = !STRINGP (it->string);
ptrdiff_t where_we_are = (bufp ? IT_CHARPOS (*it) : IT_STRING_CHARPOS (*it));
struct display_pos save_current = it->current;
struct text_pos save_position = it->position;
struct text_pos pos1;
ptrdiff_t next_stop;
/* Scan in strict logical order. */
eassert (it->bidi_p);
it->bidi_p = false;
do
{
it->prev_stop = charpos;
if (bufp)
{
SET_TEXT_POS (pos1, charpos, CHAR_TO_BYTE (charpos));
reseat_1 (it, pos1, false);
}
else
it->current.string_pos = string_pos (charpos, it->string);
compute_stop_pos (it);
/* We must advance forward, right? */
if (it->stop_charpos <= it->prev_stop)
emacs_abort ();
charpos = it->stop_charpos;
}
while (charpos <= where_we_are);
it->bidi_p = true;
it->current = save_current;
it->position = save_position;
next_stop = it->stop_charpos;
it->stop_charpos = it->prev_stop;
handle_stop (it);
it->stop_charpos = next_stop;
}
/* Load IT with the next display element from current_buffer. Value
is false if end of buffer reached. IT->stop_charpos is the next
position at which to stop and check for text properties or buffer
end. */
static bool
next_element_from_buffer (struct it *it)
{
bool success_p = true;
eassert (IT_CHARPOS (*it) >= BEGV);
eassert (NILP (it->string) && !it->s);
eassert (!it->bidi_p
|| (EQ (it->bidi_it.string.lstring, Qnil)
&& it->bidi_it.string.s == NULL));
/* With bidi reordering, the character to display might not be the
character at IT_CHARPOS. BIDI_IT.FIRST_ELT means that
we were reseat()ed to a new buffer position, which is potentially
a different paragraph. */
if (it->bidi_p && it->bidi_it.first_elt)
{
get_visually_first_element (it);
SET_TEXT_POS (it->position, IT_CHARPOS (*it), IT_BYTEPOS (*it));
}
if (IT_CHARPOS (*it) >= it->stop_charpos)
{
if (IT_CHARPOS (*it) >= it->end_charpos)
{
bool overlay_strings_follow_p;
/* End of the game, except when overlay strings follow that
haven't been returned yet. */
if (it->overlay_strings_at_end_processed_p)
overlay_strings_follow_p = false;
else
{
it->overlay_strings_at_end_processed_p = true;
overlay_strings_follow_p = get_overlay_strings (it, 0);
}
if (overlay_strings_follow_p)
success_p = GET_NEXT_DISPLAY_ELEMENT (it);
else
{
it->what = IT_EOB;
it->position = it->current.pos;
success_p = false;
}
}
else if (!(!it->bidi_p
|| BIDI_AT_BASE_LEVEL (it->bidi_it)
|| IT_CHARPOS (*it) == it->stop_charpos))
{
/* With bidi non-linear iteration, we could find ourselves
far beyond the last computed stop_charpos, with several
other stop positions in between that we missed. Scan
them all now, in buffer's logical order, until we find
and handle the last stop_charpos that precedes our
current position. */
handle_stop_backwards (it, it->stop_charpos);
it->ignore_overlay_strings_at_pos_p = false;
return GET_NEXT_DISPLAY_ELEMENT (it);
}
else
{
if (it->bidi_p)
{
/* Take note of the stop position we just moved across,
for when we will move back across it. */
it->prev_stop = it->stop_charpos;
/* If we are at base paragraph embedding level, take
note of the last stop position seen at this
level. */
if (BIDI_AT_BASE_LEVEL (it->bidi_it))
it->base_level_stop = it->stop_charpos;
}
handle_stop (it);
it->ignore_overlay_strings_at_pos_p = false;
return GET_NEXT_DISPLAY_ELEMENT (it);
}
}
else if (it->bidi_p
/* If we are before prev_stop, we may have overstepped on
our way backwards a stop_pos, and if so, we need to
handle that stop_pos. */
&& IT_CHARPOS (*it) < it->prev_stop
/* We can sometimes back up for reasons that have nothing
to do with bidi reordering. E.g., compositions. The
code below is only needed when we are above the base
embedding level, so test for that explicitly. */
&& !BIDI_AT_BASE_LEVEL (it->bidi_it))
{
if (it->base_level_stop <= 0
|| IT_CHARPOS (*it) < it->base_level_stop)
{
/* If we lost track of base_level_stop, we need to find
prev_stop by looking backwards. This happens, e.g., when
we were reseated to the previous screenful of text by
vertical-motion. */
it->base_level_stop = BEGV;
compute_stop_pos_backwards (it);
handle_stop_backwards (it, it->prev_stop);
}
else
handle_stop_backwards (it, it->base_level_stop);
it->ignore_overlay_strings_at_pos_p = false;
return GET_NEXT_DISPLAY_ELEMENT (it);
}
else
{
/* No face changes, overlays etc. in sight, so just return a
character from current_buffer. */
unsigned char *p;
ptrdiff_t stop;
/* We moved to the next buffer position, so any info about
previously seen overlays is no longer valid. */
it->ignore_overlay_strings_at_pos_p = false;
/* Maybe run the redisplay end trigger hook. Performance note:
This doesn't seem to cost measurable time. */
if (it->redisplay_end_trigger_charpos
&& it->glyph_row
&& IT_CHARPOS (*it) >= it->redisplay_end_trigger_charpos)
run_redisplay_end_trigger_hook (it);
stop = it->bidi_it.scan_dir < 0 ? -1 : it->end_charpos;
if (CHAR_COMPOSED_P (it, IT_CHARPOS (*it), IT_BYTEPOS (*it),
stop)
&& next_element_from_composition (it))
{
return true;
}
/* Get the next character, maybe multibyte. */
p = BYTE_POS_ADDR (IT_BYTEPOS (*it));
if (it->multibyte_p && !ASCII_CHAR_P (*p))
it->c = STRING_CHAR_AND_LENGTH (p, it->len);
else
it->c = *p, it->len = 1;
/* Record what we have and where it came from. */
it->what = IT_CHARACTER;
it->object = it->w->contents;
it->position = it->current.pos;
/* Normally we return the character found above, except when we
really want to return an ellipsis for selective display. */
if (it->selective)
{
if (it->c == '\n')
{
/* A value of selective > 0 means hide lines indented more
than that number of columns. */
if (it->selective > 0
&& IT_CHARPOS (*it) + 1 < ZV
&& indented_beyond_p (IT_CHARPOS (*it) + 1,
IT_BYTEPOS (*it) + 1,
it->selective))
{
success_p = next_element_from_ellipsis (it);
it->dpvec_char_len = -1;
}
}
else if (it->c == '\r' && it->selective == -1)
{
/* A value of selective == -1 means that everything from the
CR to the end of the line is invisible, with maybe an
ellipsis displayed for it. */
success_p = next_element_from_ellipsis (it);
it->dpvec_char_len = -1;
}
}
}
/* Value is false if end of buffer reached. */
eassert (!success_p || it->what != IT_CHARACTER || it->len > 0);
return success_p;
}
/* Run the redisplay end trigger hook for IT. */
static void
run_redisplay_end_trigger_hook (struct it *it)
{
/* IT->glyph_row should be non-null, i.e. we should be actually
displaying something, or otherwise we should not run the hook. */
eassert (it->glyph_row);
ptrdiff_t charpos = it->redisplay_end_trigger_charpos;
it->redisplay_end_trigger_charpos = 0;
/* Since we are *trying* to run these functions, don't try to run
them again, even if they get an error. */
wset_redisplay_end_trigger (it->w, Qnil);
CALLN (Frun_hook_with_args, Qredisplay_end_trigger_functions, it->window,
make_number (charpos));
/* Notice if it changed the face of the character we are on. */
handle_face_prop (it);
}
/* Deliver a composition display element. Unlike the other
next_element_from_XXX, this function is not registered in the array
get_next_element[]. It is called from next_element_from_buffer and
next_element_from_string when necessary. */
static bool
next_element_from_composition (struct it *it)
{
it->what = IT_COMPOSITION;
it->len = it->cmp_it.nbytes;
if (STRINGP (it->string))
{
if (it->c < 0)
{
IT_STRING_CHARPOS (*it) += it->cmp_it.nchars;
IT_STRING_BYTEPOS (*it) += it->cmp_it.nbytes;
return false;
}
it->position = it->current.string_pos;
it->object = it->string;
it->c = composition_update_it (&it->cmp_it, IT_STRING_CHARPOS (*it),
IT_STRING_BYTEPOS (*it), it->string);
}
else
{
if (it->c < 0)
{
IT_CHARPOS (*it) += it->cmp_it.nchars;
IT_BYTEPOS (*it) += it->cmp_it.nbytes;
if (it->bidi_p)
{
if (it->bidi_it.new_paragraph)
bidi_paragraph_init (it->paragraph_embedding, &it->bidi_it,
false);
/* Resync the bidi iterator with IT's new position.
FIXME: this doesn't support bidirectional text. */
while (it->bidi_it.charpos < IT_CHARPOS (*it))
bidi_move_to_visually_next (&it->bidi_it);
}
return false;
}
it->position = it->current.pos;
it->object = it->w->contents;
it->c = composition_update_it (&it->cmp_it, IT_CHARPOS (*it),
IT_BYTEPOS (*it), Qnil);
}
return true;
}
\f
/***********************************************************************
Moving an iterator without producing glyphs
***********************************************************************/
/* Check if iterator is at a position corresponding to a valid buffer
position after some move_it_ call. */
#define IT_POS_VALID_AFTER_MOVE_P(it) \
((it)->method != GET_FROM_STRING || IT_STRING_CHARPOS (*it) == 0)
/* Move iterator IT to a specified buffer or X position within one
line on the display without producing glyphs.
OP should be a bit mask including some or all of these bits:
MOVE_TO_X: Stop upon reaching x-position TO_X.
MOVE_TO_POS: Stop upon reaching buffer or string position TO_CHARPOS.
Regardless of OP's value, stop upon reaching the end of the display line.
TO_X is normally a value 0 <= TO_X <= IT->last_visible_x.
This means, in particular, that TO_X includes window's horizontal
scroll amount.
The return value has several possible values that
say what condition caused the scan to stop:
MOVE_POS_MATCH_OR_ZV
- when TO_POS or ZV was reached.
MOVE_X_REACHED
-when TO_X was reached before TO_POS or ZV were reached.
MOVE_LINE_CONTINUED
- when we reached the end of the display area and the line must
be continued.
MOVE_LINE_TRUNCATED
- when we reached the end of the display area and the line is
truncated.
MOVE_NEWLINE_OR_CR
- when we stopped at a line end, i.e. a newline or a CR and selective
display is on. */
static enum move_it_result
move_it_in_display_line_to (struct it *it,
ptrdiff_t to_charpos, int to_x,
enum move_operation_enum op)
{
enum move_it_result result = MOVE_UNDEFINED;
struct glyph_row *saved_glyph_row;
struct it wrap_it, atpos_it, atx_it, ppos_it;
void *wrap_data = NULL, *atpos_data = NULL, *atx_data = NULL;
void *ppos_data = NULL;
bool may_wrap = false;
enum it_method prev_method = it->method;
ptrdiff_t closest_pos UNINIT;
ptrdiff_t prev_pos = IT_CHARPOS (*it);
bool saw_smaller_pos = prev_pos < to_charpos;
/* Don't produce glyphs in produce_glyphs. */
saved_glyph_row = it->glyph_row;
it->glyph_row = NULL;
/* Use wrap_it to save a copy of IT wherever a word wrap could
occur. Use atpos_it to save a copy of IT at the desired buffer
position, if found, so that we can scan ahead and check if the
word later overshoots the window edge. Use atx_it similarly, for
pixel positions. */
wrap_it.sp = -1;
atpos_it.sp = -1;
atx_it.sp = -1;
/* Use ppos_it under bidi reordering to save a copy of IT for the
initial position. We restore that position in IT when we have
scanned the entire display line without finding a match for
TO_CHARPOS and all the character positions are greater than
TO_CHARPOS. We then restart the scan from the initial position,
and stop at CLOSEST_POS, which is a position > TO_CHARPOS that is
the closest to TO_CHARPOS. */
if (it->bidi_p)
{
if ((op & MOVE_TO_POS) && IT_CHARPOS (*it) >= to_charpos)
{
SAVE_IT (ppos_it, *it, ppos_data);
closest_pos = IT_CHARPOS (*it);
}
else
closest_pos = ZV;
}
#define BUFFER_POS_REACHED_P() \
((op & MOVE_TO_POS) != 0 \
&& BUFFERP (it->object) \
&& (IT_CHARPOS (*it) == to_charpos \
|| ((!it->bidi_p \
|| BIDI_AT_BASE_LEVEL (it->bidi_it)) \
&& IT_CHARPOS (*it) > to_charpos) \
|| (it->what == IT_COMPOSITION \
&& ((IT_CHARPOS (*it) > to_charpos \
&& to_charpos >= it->cmp_it.charpos) \
|| (IT_CHARPOS (*it) < to_charpos \
&& to_charpos <= it->cmp_it.charpos)))) \
&& (it->method == GET_FROM_BUFFER \
|| (it->method == GET_FROM_DISPLAY_VECTOR \
&& it->dpvec + it->current.dpvec_index + 1 >= it->dpend)))
/* If there's a line-/wrap-prefix, handle it. */
if (it->hpos == 0 && it->method == GET_FROM_BUFFER)
handle_line_prefix (it);
if (IT_CHARPOS (*it) < CHARPOS (this_line_min_pos))
SET_TEXT_POS (this_line_min_pos, IT_CHARPOS (*it), IT_BYTEPOS (*it));
while (true)
{
int x, i, ascent = 0, descent = 0;
/* Utility macro to reset an iterator with x, ascent, and descent. */
#define IT_RESET_X_ASCENT_DESCENT(IT) \
((IT)->current_x = x, (IT)->max_ascent = ascent, \
(IT)->max_descent = descent)
/* Stop if we move beyond TO_CHARPOS (after an image or a
display string or stretch glyph). */
if ((op & MOVE_TO_POS) != 0
&& BUFFERP (it->object)
&& it->method == GET_FROM_BUFFER
&& (((!it->bidi_p
/* When the iterator is at base embedding level, we
are guaranteed that characters are delivered for
display in strictly increasing order of their
buffer positions. */
|| BIDI_AT_BASE_LEVEL (it->bidi_it))
&& IT_CHARPOS (*it) > to_charpos)
|| (it->bidi_p
&& (prev_method == GET_FROM_IMAGE
|| prev_method == GET_FROM_STRETCH
|| prev_method == GET_FROM_STRING)
/* Passed TO_CHARPOS from left to right. */
&& ((prev_pos < to_charpos
&& IT_CHARPOS (*it) > to_charpos)
/* Passed TO_CHARPOS from right to left. */
|| (prev_pos > to_charpos
&& IT_CHARPOS (*it) < to_charpos)))))
{
if (it->line_wrap != WORD_WRAP || wrap_it.sp < 0)
{
result = MOVE_POS_MATCH_OR_ZV;
break;
}
else if (it->line_wrap == WORD_WRAP && atpos_it.sp < 0)
/* If wrap_it is valid, the current position might be in a
word that is wrapped. So, save the iterator in
atpos_it and continue to see if wrapping happens. */
SAVE_IT (atpos_it, *it, atpos_data);
}
/* Stop when ZV reached.
We used to stop here when TO_CHARPOS reached as well, but that is
too soon if this glyph does not fit on this line. So we handle it
explicitly below. */
if (!get_next_display_element (it))
{
result = MOVE_POS_MATCH_OR_ZV;
break;
}
if (it->line_wrap == TRUNCATE)
{
if (BUFFER_POS_REACHED_P ())
{
result = MOVE_POS_MATCH_OR_ZV;
break;
}
}
else
{
if (it->line_wrap == WORD_WRAP && it->area == TEXT_AREA)
{
if (IT_DISPLAYING_WHITESPACE (it))
may_wrap = true;
else if (may_wrap)
{
/* We have reached a glyph that follows one or more
whitespace characters. If the position is
already found, we are done. */
if (atpos_it.sp >= 0)
{
RESTORE_IT (it, &atpos_it, atpos_data);
result = MOVE_POS_MATCH_OR_ZV;
goto done;
}
if (atx_it.sp >= 0)
{
RESTORE_IT (it, &atx_it, atx_data);
result = MOVE_X_REACHED;
goto done;
}
/* Otherwise, we can wrap here. */
SAVE_IT (wrap_it, *it, wrap_data);
may_wrap = false;
}
}
}
/* Remember the line height for the current line, in case
the next element doesn't fit on the line. */
ascent = it->max_ascent;
descent = it->max_descent;
/* The call to produce_glyphs will get the metrics of the
display element IT is loaded with. Record the x-position
before this display element, in case it doesn't fit on the
line. */
x = it->current_x;
PRODUCE_GLYPHS (it);
if (it->area != TEXT_AREA)
{
prev_method = it->method;
if (it->method == GET_FROM_BUFFER)
prev_pos = IT_CHARPOS (*it);
set_iterator_to_next (it, true);
if (IT_CHARPOS (*it) < CHARPOS (this_line_min_pos))
SET_TEXT_POS (this_line_min_pos,
IT_CHARPOS (*it), IT_BYTEPOS (*it));
if (it->bidi_p
&& (op & MOVE_TO_POS)
&& IT_CHARPOS (*it) > to_charpos
&& IT_CHARPOS (*it) < closest_pos)
closest_pos = IT_CHARPOS (*it);
continue;
}
/* The number of glyphs we get back in IT->nglyphs will normally
be 1 except when IT->c is (i) a TAB, or (ii) a multi-glyph
character on a terminal frame, or (iii) a line end. For the
second case, IT->nglyphs - 1 padding glyphs will be present.
(On X frames, there is only one glyph produced for a
composite character.)
The behavior implemented below means, for continuation lines,
that as many spaces of a TAB as fit on the current line are
displayed there. For terminal frames, as many glyphs of a
multi-glyph character are displayed in the current line, too.
This is what the old redisplay code did, and we keep it that
way. Under X, the whole shape of a complex character must
fit on the line or it will be completely displayed in the
next line.
Note that both for tabs and padding glyphs, all glyphs have
the same width. */
if (it->nglyphs)
{
/* More than one glyph or glyph doesn't fit on line. All
glyphs have the same width. */
int single_glyph_width = it->pixel_width / it->nglyphs;
int new_x;
int x_before_this_char = x;
int hpos_before_this_char = it->hpos;
for (i = 0; i < it->nglyphs; ++i, x = new_x)
{
new_x = x + single_glyph_width;
/* We want to leave anything reaching TO_X to the caller. */
if ((op & MOVE_TO_X) && new_x > to_x)
{
if (BUFFER_POS_REACHED_P ())
{
if (it->line_wrap != WORD_WRAP || wrap_it.sp < 0)
goto buffer_pos_reached;
if (atpos_it.sp < 0)
{
SAVE_IT (atpos_it, *it, atpos_data);
IT_RESET_X_ASCENT_DESCENT (&atpos_it);
}
}
else
{
if (it->line_wrap != WORD_WRAP || wrap_it.sp < 0)
{
it->current_x = x;
result = MOVE_X_REACHED;
break;
}
if (atx_it.sp < 0)
{
SAVE_IT (atx_it, *it, atx_data);
IT_RESET_X_ASCENT_DESCENT (&atx_it);
}
}
}
if (/* Lines are continued. */
it->line_wrap != TRUNCATE
&& (/* And glyph doesn't fit on the line. */
new_x > it->last_visible_x
/* Or it fits exactly and we're on a window
system frame. */
|| (new_x == it->last_visible_x
&& FRAME_WINDOW_P (it->f)
&& ((it->bidi_p && it->bidi_it.paragraph_dir == R2L)
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)))))
{
bool moved_forward = false;
if (/* IT->hpos == 0 means the very first glyph
doesn't fit on the line, e.g. a wide image. */
it->hpos == 0
|| (new_x == it->last_visible_x
&& FRAME_WINDOW_P (it->f)))
{
++it->hpos;
it->current_x = new_x;
/* The character's last glyph just barely fits
in this row. */
if (i == it->nglyphs - 1)
{
/* If this is the destination position,
return a position *before* it in this row,
now that we know it fits in this row. */
if (BUFFER_POS_REACHED_P ())
{
bool can_wrap = true;
/* If we are at a whitespace character
that barely fits on this screen line,
but the next character is also
whitespace, we cannot wrap here. */
if (it->line_wrap == WORD_WRAP
&& wrap_it.sp >= 0
&& may_wrap
&& IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
{
struct it tem_it;
void *tem_data = NULL;
SAVE_IT (tem_it, *it, tem_data);
set_iterator_to_next (it, true);
if (get_next_display_element (it)
&& IT_DISPLAYING_WHITESPACE (it))
can_wrap = false;
RESTORE_IT (it, &tem_it, tem_data);
}
if (it->line_wrap != WORD_WRAP
|| wrap_it.sp < 0
/* If we've just found whitespace
where we can wrap, effectively
ignore the previous wrap point --
it is no longer relevant, but we
won't have an opportunity to
update it, since we've reached
the edge of this screen line. */
|| (may_wrap && can_wrap
&& IT_OVERFLOW_NEWLINE_INTO_FRINGE (it)))
{
it->hpos = hpos_before_this_char;
it->current_x = x_before_this_char;
result = MOVE_POS_MATCH_OR_ZV;
break;
}
if (it->line_wrap == WORD_WRAP
&& atpos_it.sp < 0)
{
SAVE_IT (atpos_it, *it, atpos_data);
atpos_it.current_x = x_before_this_char;
atpos_it.hpos = hpos_before_this_char;
}
}
prev_method = it->method;
if (it->method == GET_FROM_BUFFER)
prev_pos = IT_CHARPOS (*it);
set_iterator_to_next (it, true);
if (IT_CHARPOS (*it) < CHARPOS (this_line_min_pos))
SET_TEXT_POS (this_line_min_pos,
IT_CHARPOS (*it), IT_BYTEPOS (*it));
/* On graphical terminals, newlines may
"overflow" into the fringe if
overflow-newline-into-fringe is non-nil.
On text terminals, and on graphical
terminals with no right margin, newlines
may overflow into the last glyph on the
display line.*/
if (!FRAME_WINDOW_P (it->f)
|| ((it->bidi_p
&& it->bidi_it.paragraph_dir == R2L)
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)) == 0
|| IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
{
if (!get_next_display_element (it))
{
result = MOVE_POS_MATCH_OR_ZV;
break;
}
moved_forward = true;
if (BUFFER_POS_REACHED_P ())
{
if (ITERATOR_AT_END_OF_LINE_P (it))
result = MOVE_POS_MATCH_OR_ZV;
else
result = MOVE_LINE_CONTINUED;
break;
}
if (ITERATOR_AT_END_OF_LINE_P (it)
&& (it->line_wrap != WORD_WRAP
|| wrap_it.sp < 0
|| IT_OVERFLOW_NEWLINE_INTO_FRINGE (it)))
{
result = MOVE_NEWLINE_OR_CR;
break;
}
}
}
}
else
IT_RESET_X_ASCENT_DESCENT (it);
/* If the screen line ends with whitespace, and we
are under word-wrap, don't use wrap_it: it is no
longer relevant, but we won't have an opportunity
to update it, since we are done with this screen
line. */
if (may_wrap && IT_OVERFLOW_NEWLINE_INTO_FRINGE (it)
/* If the character after the one which set the
may_wrap flag is also whitespace, we can't
wrap here, since the screen line cannot be
wrapped in the middle of whitespace.
Therefore, wrap_it _is_ relevant in that
case. */
&& !(moved_forward && IT_DISPLAYING_WHITESPACE (it)))
{
/* If we've found TO_X, go back there, as we now
know the last word fits on this screen line. */
if ((op & MOVE_TO_X) && new_x == it->last_visible_x
&& atx_it.sp >= 0)
{
RESTORE_IT (it, &atx_it, atx_data);
atpos_it.sp = -1;
atx_it.sp = -1;
result = MOVE_X_REACHED;
break;
}
}
else if (wrap_it.sp >= 0)
{
RESTORE_IT (it, &wrap_it, wrap_data);
atpos_it.sp = -1;
atx_it.sp = -1;
}
TRACE_MOVE ((stderr, "move_it_in: continued at %d\n",
IT_CHARPOS (*it)));
result = MOVE_LINE_CONTINUED;
break;
}
if (BUFFER_POS_REACHED_P ())
{
if (it->line_wrap != WORD_WRAP || wrap_it.sp < 0)
goto buffer_pos_reached;
if (it->line_wrap == WORD_WRAP && atpos_it.sp < 0)
{
SAVE_IT (atpos_it, *it, atpos_data);
IT_RESET_X_ASCENT_DESCENT (&atpos_it);
}
}
if (new_x > it->first_visible_x)
{
/* Glyph is visible. Increment number of glyphs that
would be displayed. */
++it->hpos;
}
}
if (result != MOVE_UNDEFINED)
break;
}
else if (BUFFER_POS_REACHED_P ())
{
buffer_pos_reached:
IT_RESET_X_ASCENT_DESCENT (it);
result = MOVE_POS_MATCH_OR_ZV;
break;
}
else if ((op & MOVE_TO_X) && it->current_x >= to_x)
{
/* Stop when TO_X specified and reached. This check is
necessary here because of lines consisting of a line end,
only. The line end will not produce any glyphs and we
would never get MOVE_X_REACHED. */
eassert (it->nglyphs == 0);
result = MOVE_X_REACHED;
break;
}
/* Is this a line end? If yes, we're done. */
if (ITERATOR_AT_END_OF_LINE_P (it))
{
/* If we are past TO_CHARPOS, but never saw any character
positions smaller than TO_CHARPOS, return
MOVE_POS_MATCH_OR_ZV, like the unidirectional display
did. */
if (it->bidi_p && (op & MOVE_TO_POS) != 0)
{
if (!saw_smaller_pos && IT_CHARPOS (*it) > to_charpos)
{
if (closest_pos < ZV)
{
RESTORE_IT (it, &ppos_it, ppos_data);
/* Don't recurse if closest_pos is equal to
to_charpos, since we have just tried that. */
if (closest_pos != to_charpos)
move_it_in_display_line_to (it, closest_pos, -1,
MOVE_TO_POS);
result = MOVE_POS_MATCH_OR_ZV;
}
else
goto buffer_pos_reached;
}
else if (it->line_wrap == WORD_WRAP && atpos_it.sp >= 0
&& IT_CHARPOS (*it) > to_charpos)
goto buffer_pos_reached;
else
result = MOVE_NEWLINE_OR_CR;
}
else
result = MOVE_NEWLINE_OR_CR;
/* If we've processed the newline, make sure this flag is
reset, as it must only be set when the newline itself is
processed. */
if (result == MOVE_NEWLINE_OR_CR)
it->constrain_row_ascent_descent_p = false;
break;
}
prev_method = it->method;
if (it->method == GET_FROM_BUFFER)
prev_pos = IT_CHARPOS (*it);
/* The current display element has been consumed. Advance
to the next. */
set_iterator_to_next (it, true);
if (IT_CHARPOS (*it) < CHARPOS (this_line_min_pos))
SET_TEXT_POS (this_line_min_pos, IT_CHARPOS (*it), IT_BYTEPOS (*it));
if (IT_CHARPOS (*it) < to_charpos)
saw_smaller_pos = true;
if (it->bidi_p
&& (op & MOVE_TO_POS)
&& IT_CHARPOS (*it) >= to_charpos
&& IT_CHARPOS (*it) < closest_pos)
closest_pos = IT_CHARPOS (*it);
/* Stop if lines are truncated and IT's current x-position is
past the right edge of the window now. */
if (it->line_wrap == TRUNCATE
&& it->current_x >= it->last_visible_x)
{
if (!FRAME_WINDOW_P (it->f)
|| ((it->bidi_p && it->bidi_it.paragraph_dir == R2L)
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)) == 0
|| IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
{
bool at_eob_p = false;
if ((at_eob_p = !get_next_display_element (it))
|| BUFFER_POS_REACHED_P ()
/* If we are past TO_CHARPOS, but never saw any
character positions smaller than TO_CHARPOS,
return MOVE_POS_MATCH_OR_ZV, like the
unidirectional display did. */
|| (it->bidi_p && (op & MOVE_TO_POS) != 0
&& !saw_smaller_pos
&& IT_CHARPOS (*it) > to_charpos))
{
if (it->bidi_p
&& !BUFFER_POS_REACHED_P ()
&& !at_eob_p && closest_pos < ZV)
{
RESTORE_IT (it, &ppos_it, ppos_data);
if (closest_pos != to_charpos)
move_it_in_display_line_to (it, closest_pos, -1,
MOVE_TO_POS);
}
result = MOVE_POS_MATCH_OR_ZV;
break;
}
if (ITERATOR_AT_END_OF_LINE_P (it))
{
result = MOVE_NEWLINE_OR_CR;
break;
}
}
else if (it->bidi_p && (op & MOVE_TO_POS) != 0
&& !saw_smaller_pos
&& IT_CHARPOS (*it) > to_charpos)
{
if (closest_pos < ZV)
{
RESTORE_IT (it, &ppos_it, ppos_data);
if (closest_pos != to_charpos)
move_it_in_display_line_to (it, closest_pos, -1,
MOVE_TO_POS);
}
result = MOVE_POS_MATCH_OR_ZV;
break;
}
result = MOVE_LINE_TRUNCATED;
break;
}
#undef IT_RESET_X_ASCENT_DESCENT
}
#undef BUFFER_POS_REACHED_P
/* If we scanned beyond TO_POS, restore the saved iterator either to
the wrap point (if found), or to atpos/atx location. We decide which
data to use to restore the saved iterator state by their X coordinates,
since buffer positions might increase non-monotonically with screen
coordinates due to bidi reordering. */
if (result == MOVE_LINE_CONTINUED
&& it->line_wrap == WORD_WRAP
&& wrap_it.sp >= 0
&& ((atpos_it.sp >= 0 && wrap_it.current_x < atpos_it.current_x)
|| (atx_it.sp >= 0 && wrap_it.current_x < atx_it.current_x)))
RESTORE_IT (it, &wrap_it, wrap_data);
else if (atpos_it.sp >= 0)
RESTORE_IT (it, &atpos_it, atpos_data);
else if (atx_it.sp >= 0)
RESTORE_IT (it, &atx_it, atx_data);
done:
if (atpos_data)
bidi_unshelve_cache (atpos_data, true);
if (atx_data)
bidi_unshelve_cache (atx_data, true);
if (wrap_data)
bidi_unshelve_cache (wrap_data, true);
if (ppos_data)
bidi_unshelve_cache (ppos_data, true);
/* Restore the iterator settings altered at the beginning of this
function. */
it->glyph_row = saved_glyph_row;
return result;
}
/* For external use. */
void
move_it_in_display_line (struct it *it,
ptrdiff_t to_charpos, int to_x,
enum move_operation_enum op)
{
if (it->line_wrap == WORD_WRAP
&& (op & MOVE_TO_X))
{
struct it save_it;
void *save_data = NULL;
int skip;
SAVE_IT (save_it, *it, save_data);
skip = move_it_in_display_line_to (it, to_charpos, to_x, op);
/* When word-wrap is on, TO_X may lie past the end
of a wrapped line. Then it->current is the
character on the next line, so backtrack to the
space before the wrap point. */
if (skip == MOVE_LINE_CONTINUED)
{
int prev_x = max (it->current_x - 1, 0);
RESTORE_IT (it, &save_it, save_data);
move_it_in_display_line_to
(it, -1, prev_x, MOVE_TO_X);
}
else
bidi_unshelve_cache (save_data, true);
}
else
move_it_in_display_line_to (it, to_charpos, to_x, op);
}
/* Move IT forward until it satisfies one or more of the criteria in
TO_CHARPOS, TO_X, TO_Y, and TO_VPOS.
OP is a bit-mask that specifies where to stop, and in particular,
which of those four position arguments makes a difference. See the
description of enum move_operation_enum.
If TO_CHARPOS is in invisible text, e.g. a truncated part of a
screen line, this function will set IT to the next position that is
displayed to the right of TO_CHARPOS on the screen.
Return the maximum pixel length of any line scanned but never more
than it.last_visible_x. */
int
move_it_to (struct it *it, ptrdiff_t to_charpos, int to_x, int to_y, int to_vpos, int op)
{
enum move_it_result skip, skip2 = MOVE_X_REACHED;
int line_height, line_start_x = 0, reached = 0;
int max_current_x = 0;
void *backup_data = NULL;
for (;;)
{
if (op & MOVE_TO_VPOS)
{
/* If no TO_CHARPOS and no TO_X specified, stop at the
start of the line TO_VPOS. */
if ((op & (MOVE_TO_X | MOVE_TO_POS)) == 0)
{
if (it->vpos == to_vpos)
{
reached = 1;
break;
}
else
skip = move_it_in_display_line_to (it, -1, -1, 0);
}
else
{
/* TO_VPOS >= 0 means stop at TO_X in the line at
TO_VPOS, or at TO_POS, whichever comes first. */
if (it->vpos == to_vpos)
{
reached = 2;
break;
}
skip = move_it_in_display_line_to (it, to_charpos, to_x, op);
if (skip == MOVE_POS_MATCH_OR_ZV || it->vpos == to_vpos)
{
reached = 3;
break;
}
else if (skip == MOVE_X_REACHED && it->vpos != to_vpos)
{
/* We have reached TO_X but not in the line we want. */
skip = move_it_in_display_line_to (it, to_charpos,
-1, MOVE_TO_POS);
if (skip == MOVE_POS_MATCH_OR_ZV)
{
reached = 4;
break;
}
}
}
}
else if (op & MOVE_TO_Y)
{
struct it it_backup;
if (it->line_wrap == WORD_WRAP)
SAVE_IT (it_backup, *it, backup_data);
/* TO_Y specified means stop at TO_X in the line containing
TO_Y---or at TO_CHARPOS if this is reached first. The
problem is that we can't really tell whether the line
contains TO_Y before we have completely scanned it, and
this may skip past TO_X. What we do is to first scan to
TO_X.
If TO_X is not specified, use a TO_X of zero. The reason
is to make the outcome of this function more predictable.
If we didn't use TO_X == 0, we would stop at the end of
the line which is probably not what a caller would expect
to happen. */
skip = move_it_in_display_line_to
(it, to_charpos, ((op & MOVE_TO_X) ? to_x : 0),
(MOVE_TO_X | (op & MOVE_TO_POS)));
/* If TO_CHARPOS is reached or ZV, we don't have to do more. */
if (skip == MOVE_POS_MATCH_OR_ZV)
reached = 5;
else if (skip == MOVE_X_REACHED)
{
/* If TO_X was reached, we want to know whether TO_Y is
in the line. We know this is the case if the already
scanned glyphs make the line tall enough. Otherwise,
we must check by scanning the rest of the line. */
line_height = it->max_ascent + it->max_descent;
if (to_y >= it->current_y
&& to_y < it->current_y + line_height)
{
reached = 6;
break;
}
SAVE_IT (it_backup, *it, backup_data);
TRACE_MOVE ((stderr, "move_it: from %d\n", IT_CHARPOS (*it)));
skip2 = move_it_in_display_line_to (it, to_charpos, -1,
op & MOVE_TO_POS);
TRACE_MOVE ((stderr, "move_it: to %d\n", IT_CHARPOS (*it)));
line_height = it->max_ascent + it->max_descent;
TRACE_MOVE ((stderr, "move_it: line_height = %d\n", line_height));
if (to_y >= it->current_y
&& to_y < it->current_y + line_height)
{
/* If TO_Y is in this line and TO_X was reached
above, we scanned too far. We have to restore
IT's settings to the ones before skipping. But
keep the more accurate values of max_ascent and
max_descent we've found while skipping the rest
of the line, for the sake of callers, such as
pos_visible_p, that need to know the line
height. */
int max_ascent = it->max_ascent;
int max_descent = it->max_descent;
RESTORE_IT (it, &it_backup, backup_data);
it->max_ascent = max_ascent;
it->max_descent = max_descent;
reached = 6;
}
else
{
skip = skip2;
if (skip == MOVE_POS_MATCH_OR_ZV)
reached = 7;
}
}
else
{
/* Check whether TO_Y is in this line. */
line_height = it->max_ascent + it->max_descent;
TRACE_MOVE ((stderr, "move_it: line_height = %d\n", line_height));
if (to_y >= it->current_y
&& to_y < it->current_y + line_height)
{
if (to_y > it->current_y)
max_current_x = max (it->current_x, max_current_x);
/* When word-wrap is on, TO_X may lie past the end
of a wrapped line. Then it->current is the
character on the next line, so backtrack to the
space before the wrap point. */
if (skip == MOVE_LINE_CONTINUED
&& it->line_wrap == WORD_WRAP)
{
int prev_x = max (it->current_x - 1, 0);
RESTORE_IT (it, &it_backup, backup_data);
skip = move_it_in_display_line_to
(it, -1, prev_x, MOVE_TO_X);
}
reached = 6;
}
}
if (reached)
{
max_current_x = max (it->current_x, max_current_x);
break;
}
}
else if (BUFFERP (it->object)
&& (it->method == GET_FROM_BUFFER
|| it->method == GET_FROM_STRETCH)
&& IT_CHARPOS (*it) >= to_charpos
/* Under bidi iteration, a call to set_iterator_to_next
can scan far beyond to_charpos if the initial
portion of the next line needs to be reordered. In
that case, give move_it_in_display_line_to another
chance below. */
&& !(it->bidi_p
&& it->bidi_it.scan_dir == -1))
skip = MOVE_POS_MATCH_OR_ZV;
else
skip = move_it_in_display_line_to (it, to_charpos, -1, MOVE_TO_POS);
switch (skip)
{
case MOVE_POS_MATCH_OR_ZV:
max_current_x = max (it->current_x, max_current_x);
reached = 8;
goto out;
case MOVE_NEWLINE_OR_CR:
max_current_x = max (it->current_x, max_current_x);
set_iterator_to_next (it, true);
it->continuation_lines_width = 0;
break;
case MOVE_LINE_TRUNCATED:
max_current_x = it->last_visible_x;
it->continuation_lines_width = 0;
reseat_at_next_visible_line_start (it, false);
if ((op & MOVE_TO_POS) != 0
&& IT_CHARPOS (*it) > to_charpos)
{
reached = 9;
goto out;
}
break;
case MOVE_LINE_CONTINUED:
max_current_x = it->last_visible_x;
/* For continued lines ending in a tab, some of the glyphs
associated with the tab are displayed on the current
line. Since it->current_x does not include these glyphs,
we use it->last_visible_x instead. */
if (it->c == '\t')
{
it->continuation_lines_width += it->last_visible_x;
/* When moving by vpos, ensure that the iterator really
advances to the next line (bug#847, bug#969). Fixme:
do we need to do this in other circumstances? */
if (it->current_x != it->last_visible_x
&& (op & MOVE_TO_VPOS)
&& !(op & (MOVE_TO_X | MOVE_TO_POS)))
{
line_start_x = it->current_x + it->pixel_width
- it->last_visible_x;
if (FRAME_WINDOW_P (it->f))
{
struct face *face = FACE_FROM_ID (it->f, it->face_id);
struct font *face_font = face->font;
/* When display_line produces a continued line
that ends in a TAB, it skips a tab stop that
is closer than the font's space character
width (see x_produce_glyphs where it produces
the stretch glyph which represents a TAB).
We need to reproduce the same logic here. */
eassert (face_font);
if (face_font)
{
if (line_start_x < face_font->space_width)
line_start_x
+= it->tab_width * face_font->space_width;
}
}
set_iterator_to_next (it, false);
}
}
else
it->continuation_lines_width += it->current_x;
break;
default:
emacs_abort ();
}
/* Reset/increment for the next run. */
recenter_overlay_lists (current_buffer, IT_CHARPOS (*it));
it->current_x = line_start_x;
line_start_x = 0;
it->hpos = 0;
it->current_y += it->max_ascent + it->max_descent;
++it->vpos;
last_height = it->max_ascent + it->max_descent;
it->max_ascent = it->max_descent = 0;
}
out:
/* On text terminals, we may stop at the end of a line in the middle
of a multi-character glyph. If the glyph itself is continued,
i.e. it is actually displayed on the next line, don't treat this
stopping point as valid; move to the next line instead (unless
that brings us offscreen). */
if (!FRAME_WINDOW_P (it->f)
&& op & MOVE_TO_POS
&& IT_CHARPOS (*it) == to_charpos
&& it->what == IT_CHARACTER
&& it->nglyphs > 1
&& it->line_wrap == WINDOW_WRAP
&& it->current_x == it->last_visible_x - 1
&& it->c != '\n'
&& it->c != '\t'
&& it->w->window_end_valid
&& it->vpos < it->w->window_end_vpos)
{
it->continuation_lines_width += it->current_x;
it->current_x = it->hpos = it->max_ascent = it->max_descent = 0;
it->current_y += it->max_ascent + it->max_descent;
++it->vpos;
last_height = it->max_ascent + it->max_descent;
}
if (backup_data)
bidi_unshelve_cache (backup_data, true);
TRACE_MOVE ((stderr, "move_it_to: reached %d\n", reached));
return max_current_x;
}
/* Move iterator IT backward by a specified y-distance DY, DY >= 0.
If DY > 0, move IT backward at least that many pixels. DY = 0
means move IT backward to the preceding line start or BEGV. This
function may move over more than DY pixels if IT->current_y - DY
ends up in the middle of a line; in this case IT->current_y will be
set to the top of the line moved to. */
void
move_it_vertically_backward (struct it *it, int dy)
{
int nlines, h;
struct it it2, it3;
void *it2data = NULL, *it3data = NULL;
ptrdiff_t start_pos;
int nchars_per_row
= (it->last_visible_x - it->first_visible_x) / FRAME_COLUMN_WIDTH (it->f);
ptrdiff_t pos_limit;
move_further_back:
eassert (dy >= 0);
start_pos = IT_CHARPOS (*it);
/* Estimate how many newlines we must move back. */
nlines = max (1, dy / default_line_pixel_height (it->w));
if (it->line_wrap == TRUNCATE || nchars_per_row == 0)
pos_limit = BEGV;
else
pos_limit = max (start_pos - nlines * nchars_per_row, BEGV);
/* Set the iterator's position that many lines back. But don't go
back more than NLINES full screen lines -- this wins a day with
buffers which have very long lines. */
while (nlines-- && IT_CHARPOS (*it) > pos_limit)
back_to_previous_visible_line_start (it);
/* Reseat the iterator here. When moving backward, we don't want
reseat to skip forward over invisible text, set up the iterator
to deliver from overlay strings at the new position etc. So,
use reseat_1 here. */
reseat_1 (it, it->current.pos, true);
/* We are now surely at a line start. */
it->current_x = it->hpos = 0; /* FIXME: this is incorrect when bidi
reordering is in effect. */
it->continuation_lines_width = 0;
/* Move forward and see what y-distance we moved. First move to the
start of the next line so that we get its height. We need this
height to be able to tell whether we reached the specified
y-distance. */
SAVE_IT (it2, *it, it2data);
it2.max_ascent = it2.max_descent = 0;
do
{
move_it_to (&it2, start_pos, -1, -1, it2.vpos + 1,
MOVE_TO_POS | MOVE_TO_VPOS);
}
while (!(IT_POS_VALID_AFTER_MOVE_P (&it2)
/* If we are in a display string which starts at START_POS,
and that display string includes a newline, and we are
right after that newline (i.e. at the beginning of a
display line), exit the loop, because otherwise we will
infloop, since move_it_to will see that it is already at
START_POS and will not move. */
|| (it2.method == GET_FROM_STRING
&& IT_CHARPOS (it2) == start_pos
&& SREF (it2.string, IT_STRING_BYTEPOS (it2) - 1) == '\n')));
eassert (IT_CHARPOS (*it) >= BEGV);
SAVE_IT (it3, it2, it3data);
move_it_to (&it2, start_pos, -1, -1, -1, MOVE_TO_POS);
eassert (IT_CHARPOS (*it) >= BEGV);
/* H is the actual vertical distance from the position in *IT
and the starting position. */
h = it2.current_y - it->current_y;
/* NLINES is the distance in number of lines. */
nlines = it2.vpos - it->vpos;
/* Correct IT's y and vpos position
so that they are relative to the starting point. */
it->vpos -= nlines;
it->current_y -= h;
if (dy == 0)
{
/* DY == 0 means move to the start of the screen line. The
value of nlines is > 0 if continuation lines were involved,
or if the original IT position was at start of a line. */
RESTORE_IT (it, it, it2data);
if (nlines > 0)
move_it_by_lines (it, nlines);
/* The above code moves us to some position NLINES down,
usually to its first glyph (leftmost in an L2R line), but
that's not necessarily the start of the line, under bidi
reordering. We want to get to the character position
that is immediately after the newline of the previous
line. */
if (it->bidi_p
&& !it->continuation_lines_width
&& !STRINGP (it->string)
&& IT_CHARPOS (*it) > BEGV
&& FETCH_BYTE (IT_BYTEPOS (*it) - 1) != '\n')
{
ptrdiff_t cp = IT_CHARPOS (*it), bp = IT_BYTEPOS (*it);
DEC_BOTH (cp, bp);
cp = find_newline_no_quit (cp, bp, -1, NULL);
move_it_to (it, cp, -1, -1, -1, MOVE_TO_POS);
}
bidi_unshelve_cache (it3data, true);
}
else
{
/* The y-position we try to reach, relative to *IT.
Note that H has been subtracted in front of the if-statement. */
int target_y = it->current_y + h - dy;
int y0 = it3.current_y;
int y1;
int line_height;
RESTORE_IT (&it3, &it3, it3data);
y1 = line_bottom_y (&it3);
line_height = y1 - y0;
RESTORE_IT (it, it, it2data);
/* If we did not reach target_y, try to move further backward if
we can. If we moved too far backward, try to move forward. */
if (target_y < it->current_y
/* This is heuristic. In a window that's 3 lines high, with
a line height of 13 pixels each, recentering with point
on the bottom line will try to move -39/2 = 19 pixels
backward. Try to avoid moving into the first line. */
&& (it->current_y - target_y
> min (window_box_height (it->w), line_height * 2 / 3))
&& IT_CHARPOS (*it) > BEGV)
{
TRACE_MOVE ((stderr, " not far enough -> move_vert %d\n",
target_y - it->current_y));
dy = it->current_y - target_y;
goto move_further_back;
}
else if (target_y >= it->current_y + line_height
&& IT_CHARPOS (*it) < ZV)
{
/* Should move forward by at least one line, maybe more.
Note: Calling move_it_by_lines can be expensive on
terminal frames, where compute_motion is used (via
vmotion) to do the job, when there are very long lines
and truncate-lines is nil. That's the reason for
treating terminal frames specially here. */
if (!FRAME_WINDOW_P (it->f))
move_it_vertically (it, target_y - it->current_y);
else
{
do
{
move_it_by_lines (it, 1);
}
while (target_y >= line_bottom_y (it) && IT_CHARPOS (*it) < ZV);
}
}
}
}
/* Move IT by a specified amount of pixel lines DY. DY negative means
move backwards. DY = 0 means move to start of screen line. At the
end, IT will be on the start of a screen line. */
void
move_it_vertically (struct it *it, int dy)
{
if (dy <= 0)
move_it_vertically_backward (it, -dy);
else
{
TRACE_MOVE ((stderr, "move_it_v: from %d, %d\n", IT_CHARPOS (*it), dy));
move_it_to (it, ZV, -1, it->current_y + dy, -1,
MOVE_TO_POS | MOVE_TO_Y);
TRACE_MOVE ((stderr, "move_it_v: to %d\n", IT_CHARPOS (*it)));
/* If buffer ends in ZV without a newline, move to the start of
the line to satisfy the post-condition. */
if (IT_CHARPOS (*it) == ZV
&& ZV > BEGV
&& FETCH_BYTE (IT_BYTEPOS (*it) - 1) != '\n')
move_it_by_lines (it, 0);
}
}
/* Move iterator IT past the end of the text line it is in. */
void
move_it_past_eol (struct it *it)
{
enum move_it_result rc;
rc = move_it_in_display_line_to (it, Z, 0, MOVE_TO_POS);
if (rc == MOVE_NEWLINE_OR_CR)
set_iterator_to_next (it, false);
}
/* Move IT by a specified number DVPOS of screen lines down. DVPOS
negative means move up. DVPOS == 0 means move to the start of the
screen line.
Optimization idea: If we would know that IT->f doesn't use
a face with proportional font, we could be faster for
truncate-lines nil. */
void
move_it_by_lines (struct it *it, ptrdiff_t dvpos)
{
/* The commented-out optimization uses vmotion on terminals. This
gives bad results, because elements like it->what, on which
callers such as pos_visible_p rely, aren't updated. */
/* struct position pos;
if (!FRAME_WINDOW_P (it->f))
{
struct text_pos textpos;
pos = *vmotion (IT_CHARPOS (*it), dvpos, it->w);
SET_TEXT_POS (textpos, pos.bufpos, pos.bytepos);
reseat (it, textpos, true);
it->vpos += pos.vpos;
it->current_y += pos.vpos;
}
else */
if (dvpos == 0)
{
/* DVPOS == 0 means move to the start of the screen line. */
move_it_vertically_backward (it, 0);
/* Let next call to line_bottom_y calculate real line height. */
last_height = 0;
}
else if (dvpos > 0)
{
move_it_to (it, -1, -1, -1, it->vpos + dvpos, MOVE_TO_VPOS);
if (!IT_POS_VALID_AFTER_MOVE_P (it))
{
/* Only move to the next buffer position if we ended up in a
string from display property, not in an overlay string
(before-string or after-string). That is because the
latter don't conceal the underlying buffer position, so
we can ask to move the iterator to the exact position we
are interested in. Note that, even if we are already at
IT_CHARPOS (*it), the call below is not a no-op, as it
will detect that we are at the end of the string, pop the
iterator, and compute it->current_x and it->hpos
correctly. */
move_it_to (it, IT_CHARPOS (*it) + it->string_from_display_prop_p,
-1, -1, -1, MOVE_TO_POS);
}
}
else
{
struct it it2;
void *it2data = NULL;
ptrdiff_t start_charpos, i;
int nchars_per_row
= (it->last_visible_x - it->first_visible_x) / FRAME_COLUMN_WIDTH (it->f);
bool hit_pos_limit = false;
ptrdiff_t pos_limit;
/* Start at the beginning of the screen line containing IT's
position. This may actually move vertically backwards,
in case of overlays, so adjust dvpos accordingly. */
dvpos += it->vpos;
move_it_vertically_backward (it, 0);
dvpos -= it->vpos;
/* Go back -DVPOS buffer lines, but no farther than -DVPOS full
screen lines, and reseat the iterator there. */
start_charpos = IT_CHARPOS (*it);
if (it->line_wrap == TRUNCATE || nchars_per_row == 0)
pos_limit = BEGV;
else
pos_limit = max (start_charpos + dvpos * nchars_per_row, BEGV);
for (i = -dvpos; i > 0 && IT_CHARPOS (*it) > pos_limit; --i)
back_to_previous_visible_line_start (it);
if (i > 0 && IT_CHARPOS (*it) <= pos_limit)
hit_pos_limit = true;
reseat (it, it->current.pos, true);
/* Move further back if we end up in a string or an image. */
while (!IT_POS_VALID_AFTER_MOVE_P (it))
{
/* First try to move to start of display line. */
dvpos += it->vpos;
move_it_vertically_backward (it, 0);
dvpos -= it->vpos;
if (IT_POS_VALID_AFTER_MOVE_P (it))
break;
/* If start of line is still in string or image,
move further back. */
back_to_previous_visible_line_start (it);
reseat (it, it->current.pos, true);
dvpos--;
}
it->current_x = it->hpos = 0;
/* Above call may have moved too far if continuation lines
are involved. Scan forward and see if it did. */
SAVE_IT (it2, *it, it2data);
it2.vpos = it2.current_y = 0;
move_it_to (&it2, start_charpos, -1, -1, -1, MOVE_TO_POS);
it->vpos -= it2.vpos;
it->current_y -= it2.current_y;
it->current_x = it->hpos = 0;
/* If we moved too far back, move IT some lines forward. */
if (it2.vpos > -dvpos)
{
int delta = it2.vpos + dvpos;
RESTORE_IT (&it2, &it2, it2data);
SAVE_IT (it2, *it, it2data);
move_it_to (it, -1, -1, -1, it->vpos + delta, MOVE_TO_VPOS);
/* Move back again if we got too far ahead. */
if (IT_CHARPOS (*it) >= start_charpos)
RESTORE_IT (it, &it2, it2data);
else
bidi_unshelve_cache (it2data, true);
}
else if (hit_pos_limit && pos_limit > BEGV
&& dvpos < 0 && it2.vpos < -dvpos)
{
/* If we hit the limit, but still didn't make it far enough
back, that means there's a display string with a newline
covering a large chunk of text, and that caused
back_to_previous_visible_line_start try to go too far.
Punish those who commit such atrocities by going back
until we've reached DVPOS, after lifting the limit, which
could make it slow for very long lines. "If it hurts,
don't do that!" */
dvpos += it2.vpos;
RESTORE_IT (it, it, it2data);
for (i = -dvpos; i > 0; --i)
{
back_to_previous_visible_line_start (it);
it->vpos--;
}
reseat_1 (it, it->current.pos, true);
}
else
RESTORE_IT (it, it, it2data);
}
}
/* Return true if IT points into the middle of a display vector. */
bool
in_display_vector_p (struct it *it)
{
return (it->method == GET_FROM_DISPLAY_VECTOR
&& it->current.dpvec_index > 0
&& it->dpvec + it->current.dpvec_index != it->dpend);
}
DEFUN ("window-text-pixel-size", Fwindow_text_pixel_size, Swindow_text_pixel_size, 0, 6, 0,
doc: /* Return the size of the text of WINDOW's buffer in pixels.
WINDOW must be a live window and defaults to the selected one. The
return value is a cons of the maximum pixel-width of any text line and
the maximum pixel-height of all text lines.
The optional argument FROM, if non-nil, specifies the first text
position and defaults to the minimum accessible position of the buffer.
If FROM is t, use the minimum accessible position that starts a
non-empty line. TO, if non-nil, specifies the last text position and
defaults to the maximum accessible position of the buffer. If TO is t,
use the maximum accessible position that ends a non-empty line.
The optional argument X-LIMIT, if non-nil, specifies the maximum text
width that can be returned. X-LIMIT nil or omitted, means to use the
pixel-width of WINDOW's body; use this if you want to know how high
WINDOW should be become in order to fit all of its buffer's text with
the width of WINDOW unaltered. Use the maximum width WINDOW may assume
if you intend to change WINDOW's width. In any case, text whose
x-coordinate is beyond X-LIMIT is ignored. Since calculating the width
of long lines can take some time, it's always a good idea to make this
argument as small as possible; in particular, if the buffer contains
long lines that shall be truncated anyway.
The optional argument Y-LIMIT, if non-nil, specifies the maximum text
height (excluding the height of the mode- or header-line, if any) that
can be returned. Text lines whose y-coordinate is beyond Y-LIMIT are
ignored. Since calculating the text height of a large buffer can take
some time, it makes sense to specify this argument if the size of the
buffer is large or unknown.
Optional argument MODE-AND-HEADER-LINE nil or omitted means do not
include the height of the mode- or header-line of WINDOW in the return
value. If it is either the symbol `mode-line' or `header-line', include
only the height of that line, if present, in the return value. If t,
include the height of both, if present, in the return value. */)
(Lisp_Object window, Lisp_Object from, Lisp_Object to, Lisp_Object x_limit,
Lisp_Object y_limit, Lisp_Object mode_and_header_line)
{
struct window *w = decode_live_window (window);
Lisp_Object buffer = w->contents;
struct buffer *b;
struct it it;
struct buffer *old_b = NULL;
ptrdiff_t start, end, pos;
struct text_pos startp;
void *itdata = NULL;
int c, max_x = 0, max_y = 0, x = 0, y = 0;
CHECK_BUFFER (buffer);
b = XBUFFER (buffer);
if (b != current_buffer)
{
old_b = current_buffer;
set_buffer_internal (b);
}
if (NILP (from))
start = BEGV;
else if (EQ (from, Qt))
{
start = pos = BEGV;
while ((pos++ < ZV) && (c = FETCH_CHAR (pos))
&& (c == ' ' || c == '\t' || c == '\n' || c == '\r'))
start = pos;
while ((pos-- > BEGV) && (c = FETCH_CHAR (pos)) && (c == ' ' || c == '\t'))
start = pos;
}
else
{
CHECK_NUMBER_COERCE_MARKER (from);
start = min (max (XINT (from), BEGV), ZV);
}
if (NILP (to))
end = ZV;
else if (EQ (to, Qt))
{
end = pos = ZV;
while ((pos-- > BEGV) && (c = FETCH_CHAR (pos))
&& (c == ' ' || c == '\t' || c == '\n' || c == '\r'))
end = pos;
while ((pos++ < ZV) && (c = FETCH_CHAR (pos)) && (c == ' ' || c == '\t'))
end = pos;
}
else
{
CHECK_NUMBER_COERCE_MARKER (to);
end = max (start, min (XINT (to), ZV));
}
if (!NILP (x_limit) && RANGED_INTEGERP (0, x_limit, INT_MAX))
max_x = XINT (x_limit);
if (NILP (y_limit))
max_y = INT_MAX;
else if (RANGED_INTEGERP (0, y_limit, INT_MAX))
max_y = XINT (y_limit);
itdata = bidi_shelve_cache ();
SET_TEXT_POS (startp, start, CHAR_TO_BYTE (start));
start_display (&it, w, startp);
if (NILP (x_limit))
x = move_it_to (&it, end, -1, max_y, -1, MOVE_TO_POS | MOVE_TO_Y);
else
{
it.last_visible_x = max_x;
/* Actually, we never want move_it_to stop at to_x. But to make
sure that move_it_in_display_line_to always moves far enough,
we set it to INT_MAX and specify MOVE_TO_X. */
x = move_it_to (&it, end, INT_MAX, max_y, -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
/* Don't return more than X-LIMIT. */
if (x > max_x)
x = max_x;
}
/* Subtract height of header-line which was counted automatically by
start_display. */
y = it.current_y + it.max_ascent + it.max_descent
- WINDOW_HEADER_LINE_HEIGHT (w);
/* Don't return more than Y-LIMIT. */
if (y > max_y)
y = max_y;
if (EQ (mode_and_header_line, Qheader_line)
|| EQ (mode_and_header_line, Qt))
/* Re-add height of header-line as requested. */
y = y + WINDOW_HEADER_LINE_HEIGHT (w);
if (EQ (mode_and_header_line, Qmode_line)
|| EQ (mode_and_header_line, Qt))
/* Add height of mode-line as requested. */
y = y + WINDOW_MODE_LINE_HEIGHT (w);
bidi_unshelve_cache (itdata, false);
if (old_b)
set_buffer_internal (old_b);
return Fcons (make_number (x), make_number (y));
}
\f
/***********************************************************************
Messages
***********************************************************************/
/* Return the number of arguments the format string FORMAT needs. */
static ptrdiff_t
format_nargs (char const *format)
{
ptrdiff_t nargs = 0;
for (char const *p = format; (p = strchr (p, '%')); p++)
if (p[1] == '%')
p++;
else
nargs++;
return nargs;
}
/* Add a message with format string FORMAT and formatted arguments
to *Messages*. */
void
add_to_log (const char *format, ...)
{
va_list ap;
va_start (ap, format);
vadd_to_log (format, ap);
va_end (ap);
}
void
vadd_to_log (char const *format, va_list ap)
{
ptrdiff_t form_nargs = format_nargs (format);
ptrdiff_t nargs = 1 + form_nargs;
Lisp_Object args[10];
eassert (nargs <= ARRAYELTS (args));
AUTO_STRING (args0, format);
args[0] = args0;
for (ptrdiff_t i = 1; i <= nargs; i++)
args[i] = va_arg (ap, Lisp_Object);
Lisp_Object msg = Qnil;
msg = Fformat_message (nargs, args);
ptrdiff_t len = SBYTES (msg) + 1;
USE_SAFE_ALLOCA;
char *buffer = SAFE_ALLOCA (len);
memcpy (buffer, SDATA (msg), len);
message_dolog (buffer, len - 1, true, STRING_MULTIBYTE (msg));
SAFE_FREE ();
}
/* Output a newline in the *Messages* buffer if "needs" one. */
void
message_log_maybe_newline (void)
{
if (message_log_need_newline)
message_dolog ("", 0, true, false);
}
/* Add a string M of length NBYTES to the message log, optionally
terminated with a newline when NLFLAG is true. MULTIBYTE, if
true, means interpret the contents of M as multibyte. This
function calls low-level routines in order to bypass text property
hooks, etc. which might not be safe to run.
This may GC (insert may run before/after change hooks),
so the buffer M must NOT point to a Lisp string. */
void
message_dolog (const char *m, ptrdiff_t nbytes, bool nlflag, bool multibyte)
{
const unsigned char *msg = (const unsigned char *) m;
if (!NILP (Vmemory_full))
return;
if (!NILP (Vmessage_log_max))
{
struct buffer *oldbuf;
Lisp_Object oldpoint, oldbegv, oldzv;
int old_windows_or_buffers_changed = windows_or_buffers_changed;
ptrdiff_t point_at_end = 0;
ptrdiff_t zv_at_end = 0;
Lisp_Object old_deactivate_mark;
old_deactivate_mark = Vdeactivate_mark;
oldbuf = current_buffer;
/* Ensure the Messages buffer exists, and switch to it.
If we created it, set the major-mode. */
bool newbuffer = NILP (Fget_buffer (Vmessages_buffer_name));
Fset_buffer (Fget_buffer_create (Vmessages_buffer_name));
if (newbuffer
&& !NILP (Ffboundp (intern ("messages-buffer-mode"))))
call0 (intern ("messages-buffer-mode"));
bset_undo_list (current_buffer, Qt);
bset_cache_long_scans (current_buffer, Qnil);
oldpoint = message_dolog_marker1;
set_marker_restricted_both (oldpoint, Qnil, PT, PT_BYTE);
oldbegv = message_dolog_marker2;
set_marker_restricted_both (oldbegv, Qnil, BEGV, BEGV_BYTE);
oldzv = message_dolog_marker3;
set_marker_restricted_both (oldzv, Qnil, ZV, ZV_BYTE);
if (PT == Z)
point_at_end = 1;
if (ZV == Z)
zv_at_end = 1;
BEGV = BEG;
BEGV_BYTE = BEG_BYTE;
ZV = Z;
ZV_BYTE = Z_BYTE;
TEMP_SET_PT_BOTH (Z, Z_BYTE);
/* Insert the string--maybe converting multibyte to single byte
or vice versa, so that all the text fits the buffer. */
if (multibyte
&& NILP (BVAR (current_buffer, enable_multibyte_characters)))
{
ptrdiff_t i;
int c, char_bytes;
char work[1];
/* Convert a multibyte string to single-byte
for the *Message* buffer. */
for (i = 0; i < nbytes; i += char_bytes)
{
c = string_char_and_length (msg + i, &char_bytes);
work[0] = CHAR_TO_BYTE8 (c);
insert_1_both (work, 1, 1, true, false, false);
}
}
else if (! multibyte
&& ! NILP (BVAR (current_buffer, enable_multibyte_characters)))
{
ptrdiff_t i;
int c, char_bytes;
unsigned char str[MAX_MULTIBYTE_LENGTH];
/* Convert a single-byte string to multibyte
for the *Message* buffer. */
for (i = 0; i < nbytes; i++)
{
c = msg[i];
MAKE_CHAR_MULTIBYTE (c);
char_bytes = CHAR_STRING (c, str);
insert_1_both ((char *) str, 1, char_bytes, true, false, false);
}
}
else if (nbytes)
insert_1_both (m, chars_in_text (msg, nbytes), nbytes,
true, false, false);
if (nlflag)
{
ptrdiff_t this_bol, this_bol_byte, prev_bol, prev_bol_byte;
printmax_t dups;
insert_1_both ("\n", 1, 1, true, false, false);
scan_newline (Z, Z_BYTE, BEG, BEG_BYTE, -2, false);
this_bol = PT;
this_bol_byte = PT_BYTE;
/* See if this line duplicates the previous one.
If so, combine duplicates. */
if (this_bol > BEG)
{
scan_newline (PT, PT_BYTE, BEG, BEG_BYTE, -2, false);
prev_bol = PT;
prev_bol_byte = PT_BYTE;
dups = message_log_check_duplicate (prev_bol_byte,
this_bol_byte);
if (dups)
{
del_range_both (prev_bol, prev_bol_byte,
this_bol, this_bol_byte, false);
if (dups > 1)
{
char dupstr[sizeof " [ times]"
+ INT_STRLEN_BOUND (printmax_t)];
/* If you change this format, don't forget to also
change message_log_check_duplicate. */
int duplen = sprintf (dupstr, " [%"pMd" times]", dups);
TEMP_SET_PT_BOTH (Z - 1, Z_BYTE - 1);
insert_1_both (dupstr, duplen, duplen,
true, false, true);
}
}
}
/* If we have more than the desired maximum number of lines
in the *Messages* buffer now, delete the oldest ones.
This is safe because we don't have undo in this buffer. */
if (NATNUMP (Vmessage_log_max))
{
scan_newline (Z, Z_BYTE, BEG, BEG_BYTE,
-XFASTINT (Vmessage_log_max) - 1, false);
del_range_both (BEG, BEG_BYTE, PT, PT_BYTE, false);
}
}
BEGV = marker_position (oldbegv);
BEGV_BYTE = marker_byte_position (oldbegv);
if (zv_at_end)
{
ZV = Z;
ZV_BYTE = Z_BYTE;
}
else
{
ZV = marker_position (oldzv);
ZV_BYTE = marker_byte_position (oldzv);
}
if (point_at_end)
TEMP_SET_PT_BOTH (Z, Z_BYTE);
else
/* We can't do Fgoto_char (oldpoint) because it will run some
Lisp code. */
TEMP_SET_PT_BOTH (marker_position (oldpoint),
marker_byte_position (oldpoint));
unchain_marker (XMARKER (oldpoint));
unchain_marker (XMARKER (oldbegv));
unchain_marker (XMARKER (oldzv));
/* We called insert_1_both above with its 5th argument (PREPARE)
false, which prevents insert_1_both from calling
prepare_to_modify_buffer, which in turns prevents us from
incrementing windows_or_buffers_changed even if *Messages* is
shown in some window. So we must manually set
windows_or_buffers_changed here to make up for that. */
windows_or_buffers_changed = old_windows_or_buffers_changed;
bset_redisplay (current_buffer);
set_buffer_internal (oldbuf);
message_log_need_newline = !nlflag;
Vdeactivate_mark = old_deactivate_mark;
}
}
/* We are at the end of the buffer after just having inserted a newline.
(Note: We depend on the fact we won't be crossing the gap.)
Check to see if the most recent message looks a lot like the previous one.
Return 0 if different, 1 if the new one should just replace it, or a
value N > 1 if we should also append " [N times]". */
static intmax_t
message_log_check_duplicate (ptrdiff_t prev_bol_byte, ptrdiff_t this_bol_byte)
{
ptrdiff_t i;
ptrdiff_t len = Z_BYTE - 1 - this_bol_byte;
bool seen_dots = false;
unsigned char *p1 = BUF_BYTE_ADDRESS (current_buffer, prev_bol_byte);
unsigned char *p2 = BUF_BYTE_ADDRESS (current_buffer, this_bol_byte);
for (i = 0; i < len; i++)
{
if (i >= 3 && p1[i - 3] == '.' && p1[i - 2] == '.' && p1[i - 1] == '.')
seen_dots = true;
if (p1[i] != p2[i])
return seen_dots;
}
p1 += len;
if (*p1 == '\n')
return 2;
if (*p1++ == ' ' && *p1++ == '[')
{
char *pend;
intmax_t n = strtoimax ((char *) p1, &pend, 10);
if (0 < n && n < INTMAX_MAX && strncmp (pend, " times]\n", 8) == 0)
return n + 1;
}
return 0;
}
\f
/* Display an echo area message M with a specified length of NBYTES
bytes. The string may include null characters. If M is not a
string, clear out any existing message, and let the mini-buffer
text show through.
This function cancels echoing. */
void
message3 (Lisp_Object m)
{
clear_message (true, true);
cancel_echoing ();
/* First flush out any partial line written with print. */
message_log_maybe_newline ();
if (STRINGP (m))
{
ptrdiff_t nbytes = SBYTES (m);
bool multibyte = STRING_MULTIBYTE (m);
char *buffer;
USE_SAFE_ALLOCA;
SAFE_ALLOCA_STRING (buffer, m);
message_dolog (buffer, nbytes, true, multibyte);
SAFE_FREE ();
}
if (! inhibit_message)
message3_nolog (m);
}
/* Log the message M to stderr. Log an empty line if M is not a string. */
static void
message_to_stderr (Lisp_Object m)
{
if (noninteractive_need_newline)
{
noninteractive_need_newline = false;
fputc ('\n', stderr);
}
if (STRINGP (m))
{
Lisp_Object coding_system = Vlocale_coding_system;
Lisp_Object s;
if (!NILP (Vcoding_system_for_write))
coding_system = Vcoding_system_for_write;
if (!NILP (coding_system))
s = code_convert_string_norecord (m, coding_system, true);
else
s = m;
fwrite (SDATA (s), SBYTES (s), 1, stderr);
}
if (!cursor_in_echo_area)
fputc ('\n', stderr);
fflush (stderr);
}
/* The non-logging version of message3.
This does not cancel echoing, because it is used for echoing.
Perhaps we need to make a separate function for echoing
and make this cancel echoing. */
void
message3_nolog (Lisp_Object m)
{
struct frame *sf = SELECTED_FRAME ();
if (FRAME_INITIAL_P (sf))
message_to_stderr (m);
/* Error messages get reported properly by cmd_error, so this must be just an
informative message; if the frame hasn't really been initialized yet, just
toss it. */
else if (INTERACTIVE && sf->glyphs_initialized_p)
{
/* Get the frame containing the mini-buffer
that the selected frame is using. */
Lisp_Object mini_window = FRAME_MINIBUF_WINDOW (sf);
Lisp_Object frame = XWINDOW (mini_window)->frame;
struct frame *f = XFRAME (frame);
if (FRAME_VISIBLE_P (sf) && !FRAME_VISIBLE_P (f))
Fmake_frame_visible (frame);
if (STRINGP (m) && SCHARS (m) > 0)
{
set_message (m);
if (minibuffer_auto_raise)
Fraise_frame (frame);
/* Assume we are not echoing.
(If we are, echo_now will override this.) */
echo_message_buffer = Qnil;
}
else
clear_message (true, true);
do_pending_window_change (false);
echo_area_display (true);
do_pending_window_change (false);
if (FRAME_TERMINAL (f)->frame_up_to_date_hook)
(*FRAME_TERMINAL (f)->frame_up_to_date_hook) (f);
}
}
/* Display a null-terminated echo area message M. If M is 0, clear
out any existing message, and let the mini-buffer text show through.
The buffer M must continue to exist until after the echo area gets
cleared or some other message gets displayed there. Do not pass
text that is stored in a Lisp string. Do not pass text in a buffer
that was alloca'd. */
void
message1 (const char *m)
{
message3 (m ? build_unibyte_string (m) : Qnil);
}
/* The non-logging counterpart of message1. */
void
message1_nolog (const char *m)
{
message3_nolog (m ? build_unibyte_string (m) : Qnil);
}
/* Display a message M which contains a single %s
which gets replaced with STRING. */
void
message_with_string (const char *m, Lisp_Object string, bool log)
{
CHECK_STRING (string);
bool need_message;
if (noninteractive)
need_message = !!m;
else if (!INTERACTIVE)
need_message = false;
else
{
/* The frame whose minibuffer we're going to display the message on.
It may be larger than the selected frame, so we need
to use its buffer, not the selected frame's buffer. */
Lisp_Object mini_window;
struct frame *f, *sf = SELECTED_FRAME ();
/* Get the frame containing the minibuffer
that the selected frame is using. */
mini_window = FRAME_MINIBUF_WINDOW (sf);
f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window)));
/* Error messages get reported properly by cmd_error, so this must be
just an informative message; if the frame hasn't really been
initialized yet, just toss it. */
need_message = f->glyphs_initialized_p;
}
if (need_message)
{
AUTO_STRING (fmt, m);
Lisp_Object msg = CALLN (Fformat_message, fmt, string);
if (noninteractive)
message_to_stderr (msg);
else
{
if (log)
message3 (msg);
else
message3_nolog (msg);
/* Print should start at the beginning of the message
buffer next time. */
message_buf_print = false;
}
}
}
/* Dump an informative message to the minibuf. If M is 0, clear out
any existing message, and let the mini-buffer text show through.
The message must be safe ASCII and the format must not contain ` or
'. If your message and format do not fit into this category,
convert your arguments to Lisp objects and use Fmessage instead. */
static void ATTRIBUTE_FORMAT_PRINTF (1, 0)
vmessage (const char *m, va_list ap)
{
if (noninteractive)
{
if (m)
{
if (noninteractive_need_newline)
putc ('\n', stderr);
noninteractive_need_newline = false;
vfprintf (stderr, m, ap);
if (!cursor_in_echo_area)
fprintf (stderr, "\n");
fflush (stderr);
}
}
else if (INTERACTIVE)
{
/* The frame whose mini-buffer we're going to display the message
on. It may be larger than the selected frame, so we need to
use its buffer, not the selected frame's buffer. */
Lisp_Object mini_window;
struct frame *f, *sf = SELECTED_FRAME ();
/* Get the frame containing the mini-buffer
that the selected frame is using. */
mini_window = FRAME_MINIBUF_WINDOW (sf);
f = XFRAME (WINDOW_FRAME (XWINDOW (mini_window)));
/* Error messages get reported properly by cmd_error, so this must be
just an informative message; if the frame hasn't really been
initialized yet, just toss it. */
if (f->glyphs_initialized_p)
{
if (m)
{
ptrdiff_t len;
ptrdiff_t maxsize = FRAME_MESSAGE_BUF_SIZE (f);
USE_SAFE_ALLOCA;
char *message_buf = SAFE_ALLOCA (maxsize + 1);
len = doprnt (message_buf, maxsize, m, 0, ap);
message3 (make_string (message_buf, len));
SAFE_FREE ();
}
else
message1 (0);
/* Print should start at the beginning of the message
buffer next time. */
message_buf_print = false;
}
}
}
void
message (const char *m, ...)
{
va_list ap;
va_start (ap, m);
vmessage (m, ap);
va_end (ap);
}
/* Display the current message in the current mini-buffer. This is
only called from error handlers in process.c, and is not time
critical. */
void
update_echo_area (void)
{
if (!NILP (echo_area_buffer[0]))
{
Lisp_Object string;
string = Fcurrent_message ();
message3 (string);
}
}
/* Make sure echo area buffers in `echo_buffers' are live.
If they aren't, make new ones. */
static void
ensure_echo_area_buffers (void)
{
for (int i = 0; i < 2; i++)
if (!BUFFERP (echo_buffer[i])
|| !BUFFER_LIVE_P (XBUFFER (echo_buffer[i])))
{
Lisp_Object old_buffer = echo_buffer[i];
static char const name_fmt[] = " *Echo Area %d*";
char name[sizeof name_fmt + INT_STRLEN_BOUND (int)];
AUTO_STRING_WITH_LEN (lname, name, sprintf (name, name_fmt, i));
echo_buffer[i] = Fget_buffer_create (lname);
bset_truncate_lines (XBUFFER (echo_buffer[i]), Qnil);
/* to force word wrap in echo area -
it was decided to postpone this*/
/* XBUFFER (echo_buffer[i])->word_wrap = Qt; */
for (int j = 0; j < 2; j++)
if (EQ (old_buffer, echo_area_buffer[j]))
echo_area_buffer[j] = echo_buffer[i];
}
}
/* Call FN with args A1..A2 with either the current or last displayed
echo_area_buffer as current buffer.
WHICH zero means use the current message buffer
echo_area_buffer[0]. If that is nil, choose a suitable buffer
from echo_buffer[] and clear it.
WHICH > 0 means use echo_area_buffer[1]. If that is nil, choose a
suitable buffer from echo_buffer[] and clear it.
If WHICH < 0, set echo_area_buffer[1] to echo_area_buffer[0], so
that the current message becomes the last displayed one, choose a
suitable buffer for echo_area_buffer[0], and clear it.
Value is what FN returns. */
static bool
with_echo_area_buffer (struct window *w, int which,
bool (*fn) (ptrdiff_t, Lisp_Object),
ptrdiff_t a1, Lisp_Object a2)
{
Lisp_Object buffer;
bool this_one, the_other, clear_buffer_p, rc;
ptrdiff_t count = SPECPDL_INDEX ();
/* If buffers aren't live, make new ones. */
ensure_echo_area_buffers ();
clear_buffer_p = false;
if (which == 0)
this_one = false, the_other = true;
else if (which > 0)
this_one = true, the_other = false;
else
{
this_one = false, the_other = true;
clear_buffer_p = true;
/* We need a fresh one in case the current echo buffer equals
the one containing the last displayed echo area message. */
if (!NILP (echo_area_buffer[this_one])
&& EQ (echo_area_buffer[this_one], echo_area_buffer[the_other]))
echo_area_buffer[this_one] = Qnil;
}
/* Choose a suitable buffer from echo_buffer[] if we don't
have one. */
if (NILP (echo_area_buffer[this_one]))
{
echo_area_buffer[this_one]
= (EQ (echo_area_buffer[the_other], echo_buffer[this_one])
? echo_buffer[the_other]
: echo_buffer[this_one]);
clear_buffer_p = true;
}
buffer = echo_area_buffer[this_one];
/* Don't get confused by reusing the buffer used for echoing
for a different purpose. */
if (echo_kboard == NULL && EQ (buffer, echo_message_buffer))
cancel_echoing ();
record_unwind_protect (unwind_with_echo_area_buffer,
with_echo_area_buffer_unwind_data (w));
/* Make the echo area buffer current. Note that for display
purposes, it is not necessary that the displayed window's buffer
== current_buffer, except for text property lookup. So, let's
only set that buffer temporarily here without doing a full
Fset_window_buffer. We must also change w->pointm, though,
because otherwise an assertions in unshow_buffer fails, and Emacs
aborts. */
set_buffer_internal_1 (XBUFFER (buffer));
if (w)
{
wset_buffer (w, buffer);
set_marker_both (w->pointm, buffer, BEG, BEG_BYTE);
set_marker_both (w->old_pointm, buffer, BEG, BEG_BYTE);
}
bset_undo_list (current_buffer, Qt);
bset_read_only (current_buffer, Qnil);
specbind (Qinhibit_read_only, Qt);
specbind (Qinhibit_modification_hooks, Qt);
if (clear_buffer_p && Z > BEG)
del_range (BEG, Z);
eassert (BEGV >= BEG);
eassert (ZV <= Z && ZV >= BEGV);
rc = fn (a1, a2);
eassert (BEGV >= BEG);
eassert (ZV <= Z && ZV >= BEGV);
unbind_to (count, Qnil);
return rc;
}
/* Save state that should be preserved around the call to the function
FN called in with_echo_area_buffer. */
static Lisp_Object
with_echo_area_buffer_unwind_data (struct window *w)
{
int i = 0;
Lisp_Object vector, tmp;
/* Reduce consing by keeping one vector in
Vwith_echo_area_save_vector. */
vector = Vwith_echo_area_save_vector;
Vwith_echo_area_save_vector = Qnil;
if (NILP (vector))
vector = Fmake_vector (make_number (11), Qnil);
XSETBUFFER (tmp, current_buffer); ASET (vector, i, tmp); ++i;
ASET (vector, i, Vdeactivate_mark); ++i;
ASET (vector, i, make_number (windows_or_buffers_changed)); ++i;
if (w)
{
XSETWINDOW (tmp, w); ASET (vector, i, tmp); ++i;
ASET (vector, i, w->contents); ++i;
ASET (vector, i, make_number (marker_position (w->pointm))); ++i;
ASET (vector, i, make_number (marker_byte_position (w->pointm))); ++i;
ASET (vector, i, make_number (marker_position (w->old_pointm))); ++i;
ASET (vector, i, make_number (marker_byte_position (w->old_pointm))); ++i;
ASET (vector, i, make_number (marker_position (w->start))); ++i;
ASET (vector, i, make_number (marker_byte_position (w->start))); ++i;
}
else
{
int end = i + 8;
for (; i < end; ++i)
ASET (vector, i, Qnil);
}
eassert (i == ASIZE (vector));
return vector;
}
/* Restore global state from VECTOR which was created by
with_echo_area_buffer_unwind_data. */
static void
unwind_with_echo_area_buffer (Lisp_Object vector)
{
set_buffer_internal_1 (XBUFFER (AREF (vector, 0)));
Vdeactivate_mark = AREF (vector, 1);
windows_or_buffers_changed = XFASTINT (AREF (vector, 2));
if (WINDOWP (AREF (vector, 3)))
{
struct window *w;
Lisp_Object buffer;
w = XWINDOW (AREF (vector, 3));
buffer = AREF (vector, 4);
wset_buffer (w, buffer);
set_marker_both (w->pointm, buffer,
XFASTINT (AREF (vector, 5)),
XFASTINT (AREF (vector, 6)));
set_marker_both (w->old_pointm, buffer,
XFASTINT (AREF (vector, 7)),
XFASTINT (AREF (vector, 8)));
set_marker_both (w->start, buffer,
XFASTINT (AREF (vector, 9)),
XFASTINT (AREF (vector, 10)));
}
Vwith_echo_area_save_vector = vector;
}
/* Set up the echo area for use by print functions. MULTIBYTE_P
means we will print multibyte. */
void
setup_echo_area_for_printing (bool multibyte_p)
{
/* If we can't find an echo area any more, exit. */
if (! FRAME_LIVE_P (XFRAME (selected_frame)))
Fkill_emacs (Qnil);
ensure_echo_area_buffers ();
if (!message_buf_print)
{
/* A message has been output since the last time we printed.
Choose a fresh echo area buffer. */
if (EQ (echo_area_buffer[1], echo_buffer[0]))
echo_area_buffer[0] = echo_buffer[1];
else
echo_area_buffer[0] = echo_buffer[0];
/* Switch to that buffer and clear it. */
set_buffer_internal (XBUFFER (echo_area_buffer[0]));
bset_truncate_lines (current_buffer, Qnil);
if (Z > BEG)
{
ptrdiff_t count = SPECPDL_INDEX ();
specbind (Qinhibit_read_only, Qt);
/* Note that undo recording is always disabled. */
del_range (BEG, Z);
unbind_to (count, Qnil);
}
TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
/* Set up the buffer for the multibyteness we need. */
if (multibyte_p
!= !NILP (BVAR (current_buffer, enable_multibyte_characters)))
Fset_buffer_multibyte (multibyte_p ? Qt : Qnil);
/* Raise the frame containing the echo area. */
if (minibuffer_auto_raise)
{
struct frame *sf = SELECTED_FRAME ();
Lisp_Object mini_window;
mini_window = FRAME_MINIBUF_WINDOW (sf);
Fraise_frame (WINDOW_FRAME (XWINDOW (mini_window)));
}
message_log_maybe_newline ();
message_buf_print = true;
}
else
{
if (NILP (echo_area_buffer[0]))
{
if (EQ (echo_area_buffer[1], echo_buffer[0]))
echo_area_buffer[0] = echo_buffer[1];
else
echo_area_buffer[0] = echo_buffer[0];
}
if (current_buffer != XBUFFER (echo_area_buffer[0]))
{
/* Someone switched buffers between print requests. */
set_buffer_internal (XBUFFER (echo_area_buffer[0]));
bset_truncate_lines (current_buffer, Qnil);
}
}
}
/* Display an echo area message in window W. Value is true if W's
height is changed. If display_last_displayed_message_p,
display the message that was last displayed, otherwise
display the current message. */
static bool
display_echo_area (struct window *w)
{
bool no_message_p, window_height_changed_p;
/* Temporarily disable garbage collections while displaying the echo
area. This is done because a GC can print a message itself.
That message would modify the echo area buffer's contents while a
redisplay of the buffer is going on, and seriously confuse
redisplay. */
ptrdiff_t count = inhibit_garbage_collection ();
/* If there is no message, we must call display_echo_area_1
nevertheless because it resizes the window. But we will have to
reset the echo_area_buffer in question to nil at the end because
with_echo_area_buffer will sets it to an empty buffer. */
bool i = display_last_displayed_message_p;
/* According to the C99, C11 and C++11 standards, the integral value
of a "bool" is always 0 or 1, so this array access is safe here,
if oddly typed. */
no_message_p = NILP (echo_area_buffer[i]);
window_height_changed_p
= with_echo_area_buffer (w, display_last_displayed_message_p,
display_echo_area_1,
(intptr_t) w, Qnil);
if (no_message_p)
echo_area_buffer[i] = Qnil;
unbind_to (count, Qnil);
return window_height_changed_p;
}
/* Helper for display_echo_area. Display the current buffer which
contains the current echo area message in window W, a mini-window,
a pointer to which is passed in A1. A2..A4 are currently not used.
Change the height of W so that all of the message is displayed.
Value is true if height of W was changed. */
static bool
display_echo_area_1 (ptrdiff_t a1, Lisp_Object a2)
{
intptr_t i1 = a1;
struct window *w = (struct window *) i1;
Lisp_Object window;
struct text_pos start;
/* We are about to enter redisplay without going through
redisplay_internal, so we need to forget these faces by hand
here. */
forget_escape_and_glyphless_faces ();
/* Do this before displaying, so that we have a large enough glyph
matrix for the display. If we can't get enough space for the
whole text, display the last N lines. That works by setting w->start. */
bool window_height_changed_p = resize_mini_window (w, false);
/* Use the starting position chosen by resize_mini_window. */
SET_TEXT_POS_FROM_MARKER (start, w->start);
/* Display. */
clear_glyph_matrix (w->desired_matrix);
XSETWINDOW (window, w);
try_window (window, start, 0);
return window_height_changed_p;
}
/* Resize the echo area window to exactly the size needed for the
currently displayed message, if there is one. If a mini-buffer
is active, don't shrink it. */
void
resize_echo_area_exactly (void)
{
if (BUFFERP (echo_area_buffer[0])
&& WINDOWP (echo_area_window))
{
struct window *w = XWINDOW (echo_area_window);
Lisp_Object resize_exactly = (minibuf_level == 0 ? Qt : Qnil);
bool resized_p = with_echo_area_buffer (w, 0, resize_mini_window_1,
(intptr_t) w, resize_exactly);
if (resized_p)
{
windows_or_buffers_changed = 42;
update_mode_lines = 30;
redisplay_internal ();
}
}
}
/* Callback function for with_echo_area_buffer, when used from
resize_echo_area_exactly. A1 contains a pointer to the window to
resize, EXACTLY non-nil means resize the mini-window exactly to the
size of the text displayed. A3 and A4 are not used. Value is what
resize_mini_window returns. */
static bool
resize_mini_window_1 (ptrdiff_t a1, Lisp_Object exactly)
{
intptr_t i1 = a1;
return resize_mini_window ((struct window *) i1, !NILP (exactly));
}
/* Resize mini-window W to fit the size of its contents. EXACT_P
means size the window exactly to the size needed. Otherwise, it's
only enlarged until W's buffer is empty.
Set W->start to the right place to begin display. If the whole
contents fit, start at the beginning. Otherwise, start so as
to make the end of the contents appear. This is particularly
important for y-or-n-p, but seems desirable generally.
Value is true if the window height has been changed. */
bool
resize_mini_window (struct window *w, bool exact_p)
{
struct frame *f = XFRAME (w->frame);
bool window_height_changed_p = false;
eassert (MINI_WINDOW_P (w));
/* By default, start display at the beginning. */
set_marker_both (w->start, w->contents,
BUF_BEGV (XBUFFER (w->contents)),
BUF_BEGV_BYTE (XBUFFER (w->contents)));
/* Don't resize windows while redisplaying a window; it would
confuse redisplay functions when the size of the window they are
displaying changes from under them. Such a resizing can happen,
for instance, when which-func prints a long message while
we are running fontification-functions. We're running these
functions with safe_call which binds inhibit-redisplay to t. */
if (!NILP (Vinhibit_redisplay))
return false;
/* Nil means don't try to resize. */
if (NILP (Vresize_mini_windows)
|| (FRAME_X_P (f) && FRAME_X_OUTPUT (f) == NULL))
return false;
if (!FRAME_MINIBUF_ONLY_P (f))
{
struct it it;
int total_height = (WINDOW_PIXEL_HEIGHT (XWINDOW (FRAME_ROOT_WINDOW (f)))
+ WINDOW_PIXEL_HEIGHT (w));
int unit = FRAME_LINE_HEIGHT (f);
int height, max_height;
struct text_pos start;
struct buffer *old_current_buffer = NULL;
if (current_buffer != XBUFFER (w->contents))
{
old_current_buffer = current_buffer;
set_buffer_internal (XBUFFER (w->contents));
}
init_iterator (&it, w, BEGV, BEGV_BYTE, NULL, DEFAULT_FACE_ID);
/* Compute the max. number of lines specified by the user. */
if (FLOATP (Vmax_mini_window_height))
max_height = XFLOATINT (Vmax_mini_window_height) * total_height;
else if (INTEGERP (Vmax_mini_window_height))
max_height = XINT (Vmax_mini_window_height) * unit;
else
max_height = total_height / 4;
/* Correct that max. height if it's bogus. */
max_height = clip_to_bounds (unit, max_height, total_height);
/* Find out the height of the text in the window. */
if (it.line_wrap == TRUNCATE)
height = unit;
else
{
last_height = 0;
move_it_to (&it, ZV, -1, -1, -1, MOVE_TO_POS);
if (it.max_ascent == 0 && it.max_descent == 0)
height = it.current_y + last_height;
else
height = it.current_y + it.max_ascent + it.max_descent;
height -= min (it.extra_line_spacing, it.max_extra_line_spacing);
}
/* Compute a suitable window start. */
if (height > max_height)
{
height = (max_height / unit) * unit;
init_iterator (&it, w, ZV, ZV_BYTE, NULL, DEFAULT_FACE_ID);
move_it_vertically_backward (&it, height - unit);
start = it.current.pos;
}
else
SET_TEXT_POS (start, BEGV, BEGV_BYTE);
SET_MARKER_FROM_TEXT_POS (w->start, start);
if (EQ (Vresize_mini_windows, Qgrow_only))
{
/* Let it grow only, until we display an empty message, in which
case the window shrinks again. */
if (height > WINDOW_PIXEL_HEIGHT (w))
{
int old_height = WINDOW_PIXEL_HEIGHT (w);
FRAME_WINDOWS_FROZEN (f) = true;
grow_mini_window (w, height - WINDOW_PIXEL_HEIGHT (w), true);
window_height_changed_p = WINDOW_PIXEL_HEIGHT (w) != old_height;
}
else if (height < WINDOW_PIXEL_HEIGHT (w)
&& (exact_p || BEGV == ZV))
{
int old_height = WINDOW_PIXEL_HEIGHT (w);
FRAME_WINDOWS_FROZEN (f) = false;
shrink_mini_window (w, true);
window_height_changed_p = WINDOW_PIXEL_HEIGHT (w) != old_height;
}
}
else
{
/* Always resize to exact size needed. */
if (height > WINDOW_PIXEL_HEIGHT (w))
{
int old_height = WINDOW_PIXEL_HEIGHT (w);
FRAME_WINDOWS_FROZEN (f) = true;
grow_mini_window (w, height - WINDOW_PIXEL_HEIGHT (w), true);
window_height_changed_p = WINDOW_PIXEL_HEIGHT (w) != old_height;
}
else if (height < WINDOW_PIXEL_HEIGHT (w))
{
int old_height = WINDOW_PIXEL_HEIGHT (w);
FRAME_WINDOWS_FROZEN (f) = false;
shrink_mini_window (w, true);
if (height)
{
FRAME_WINDOWS_FROZEN (f) = true;
grow_mini_window (w, height - WINDOW_PIXEL_HEIGHT (w), true);
}
window_height_changed_p = WINDOW_PIXEL_HEIGHT (w) != old_height;
}
}
if (old_current_buffer)
set_buffer_internal (old_current_buffer);
}
return window_height_changed_p;
}
/* Value is the current message, a string, or nil if there is no
current message. */
Lisp_Object
current_message (void)
{
Lisp_Object msg;
if (!BUFFERP (echo_area_buffer[0]))
msg = Qnil;
else
{
with_echo_area_buffer (0, 0, current_message_1,
(intptr_t) &msg, Qnil);
if (NILP (msg))
echo_area_buffer[0] = Qnil;
}
return msg;
}
static bool
current_message_1 (ptrdiff_t a1, Lisp_Object a2)
{
intptr_t i1 = a1;
Lisp_Object *msg = (Lisp_Object *) i1;
if (Z > BEG)
*msg = make_buffer_string (BEG, Z, true);
else
*msg = Qnil;
return false;
}
/* Push the current message on Vmessage_stack for later restoration
by restore_message. Value is true if the current message isn't
empty. This is a relatively infrequent operation, so it's not
worth optimizing. */
bool
push_message (void)
{
Lisp_Object msg = current_message ();
Vmessage_stack = Fcons (msg, Vmessage_stack);
return STRINGP (msg);
}
/* Restore message display from the top of Vmessage_stack. */
void
restore_message (void)
{
eassert (CONSP (Vmessage_stack));
message3_nolog (XCAR (Vmessage_stack));
}
/* Handler for unwind-protect calling pop_message. */
void
pop_message_unwind (void)
{
/* Pop the top-most entry off Vmessage_stack. */
eassert (CONSP (Vmessage_stack));
Vmessage_stack = XCDR (Vmessage_stack);
}
/* Check that Vmessage_stack is nil. Called from emacs.c when Emacs
exits. If the stack is not empty, we have a missing pop_message
somewhere. */
void
check_message_stack (void)
{
if (!NILP (Vmessage_stack))
emacs_abort ();
}
/* Truncate to NCHARS what will be displayed in the echo area the next
time we display it---but don't redisplay it now. */
void
truncate_echo_area (ptrdiff_t nchars)
{
if (nchars == 0)
echo_area_buffer[0] = Qnil;
else if (!noninteractive
&& INTERACTIVE
&& !NILP (echo_area_buffer[0]))
{
struct frame *sf = SELECTED_FRAME ();
/* Error messages get reported properly by cmd_error, so this must be
just an informative message; if the frame hasn't really been
initialized yet, just toss it. */
if (sf->glyphs_initialized_p)
with_echo_area_buffer (0, 0, truncate_message_1, nchars, Qnil);
}
}
/* Helper function for truncate_echo_area. Truncate the current
message to at most NCHARS characters. */
static bool
truncate_message_1 (ptrdiff_t nchars, Lisp_Object a2)
{
if (BEG + nchars < Z)
del_range (BEG + nchars, Z);
if (Z == BEG)
echo_area_buffer[0] = Qnil;
return false;
}
/* Set the current message to STRING. */
static void
set_message (Lisp_Object string)
{
eassert (STRINGP (string));
message_enable_multibyte = STRING_MULTIBYTE (string);
with_echo_area_buffer (0, -1, set_message_1, 0, string);
message_buf_print = false;
help_echo_showing_p = false;
if (STRINGP (Vdebug_on_message)
&& STRINGP (string)
&& fast_string_match (Vdebug_on_message, string) >= 0)
call_debugger (list2 (Qerror, string));
}
/* Helper function for set_message. First argument is ignored and second
argument has the same meaning as for set_message.
This function is called with the echo area buffer being current. */
static bool
set_message_1 (ptrdiff_t a1, Lisp_Object string)
{
eassert (STRINGP (string));
/* Change multibyteness of the echo buffer appropriately. */
if (message_enable_multibyte
!= !NILP (BVAR (current_buffer, enable_multibyte_characters)))
Fset_buffer_multibyte (message_enable_multibyte ? Qt : Qnil);
bset_truncate_lines (current_buffer, message_truncate_lines ? Qt : Qnil);
if (!NILP (BVAR (current_buffer, bidi_display_reordering)))
bset_bidi_paragraph_direction (current_buffer, Qleft_to_right);
/* Insert new message at BEG. */
TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
/* This function takes care of single/multibyte conversion.
We just have to ensure that the echo area buffer has the right
setting of enable_multibyte_characters. */
insert_from_string (string, 0, 0, SCHARS (string), SBYTES (string), true);
return false;
}
/* Clear messages. CURRENT_P means clear the current message.
LAST_DISPLAYED_P means clear the message last displayed. */
void
clear_message (bool current_p, bool last_displayed_p)
{
if (current_p)
{
echo_area_buffer[0] = Qnil;
message_cleared_p = true;
}
if (last_displayed_p)
echo_area_buffer[1] = Qnil;
message_buf_print = false;
}
/* Clear garbaged frames.
This function is used where the old redisplay called
redraw_garbaged_frames which in turn called redraw_frame which in
turn called clear_frame. The call to clear_frame was a source of
flickering. I believe a clear_frame is not necessary. It should
suffice in the new redisplay to invalidate all current matrices,
and ensure a complete redisplay of all windows. */
static void
clear_garbaged_frames (void)
{
if (frame_garbaged)
{
Lisp_Object tail, frame;
struct frame *sf = SELECTED_FRAME ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (FRAME_VISIBLE_P (f) && FRAME_GARBAGED_P (f))
{
if (f->resized_p
/* It makes no sense to redraw a non-selected TTY
frame, since that will actually clear the
selected frame, and might leave the selected
frame with corrupted display, if it happens not
to be marked garbaged. */
&& !(f != sf && (FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))))
redraw_frame (f);
else
clear_current_matrices (f);
fset_redisplay (f);
f->garbaged = false;
f->resized_p = false;
}
}
frame_garbaged = false;
}
}
/* Redisplay the echo area of the selected frame. If UPDATE_FRAME_P, update
selected_frame. */
static void
echo_area_display (bool update_frame_p)
{
Lisp_Object mini_window;
struct window *w;
struct frame *f;
bool window_height_changed_p = false;
struct frame *sf = SELECTED_FRAME ();
mini_window = FRAME_MINIBUF_WINDOW (sf);
w = XWINDOW (mini_window);
f = XFRAME (WINDOW_FRAME (w));
/* Don't display if frame is invisible or not yet initialized. */
if (!FRAME_VISIBLE_P (f) || !f->glyphs_initialized_p)
return;
#ifdef HAVE_WINDOW_SYSTEM
/* When Emacs starts, selected_frame may be the initial terminal
frame. If we let this through, a message would be displayed on
the terminal. */
if (FRAME_INITIAL_P (XFRAME (selected_frame)))
return;
#endif /* HAVE_WINDOW_SYSTEM */
/* Redraw garbaged frames. */
clear_garbaged_frames ();
if (!NILP (echo_area_buffer[0]) || minibuf_level == 0)
{
echo_area_window = mini_window;
window_height_changed_p = display_echo_area (w);
w->must_be_updated_p = true;
/* Update the display, unless called from redisplay_internal.
Also don't update the screen during redisplay itself. The
update will happen at the end of redisplay, and an update
here could cause confusion. */
if (update_frame_p && !redisplaying_p)
{
int n = 0;
/* If the display update has been interrupted by pending
input, update mode lines in the frame. Due to the
pending input, it might have been that redisplay hasn't
been called, so that mode lines above the echo area are
garbaged. This looks odd, so we prevent it here. */
if (!display_completed)
n = redisplay_mode_lines (FRAME_ROOT_WINDOW (f), false);
if (window_height_changed_p
/* Don't do this if Emacs is shutting down. Redisplay
needs to run hooks. */
&& !NILP (Vrun_hooks))
{
/* Must update other windows. Likewise as in other
cases, don't let this update be interrupted by
pending input. */
ptrdiff_t count = SPECPDL_INDEX ();
specbind (Qredisplay_dont_pause, Qt);
fset_redisplay (f);
redisplay_internal ();
unbind_to (count, Qnil);
}
else if (FRAME_WINDOW_P (f) && n == 0)
{
/* Window configuration is the same as before.
Can do with a display update of the echo area,
unless we displayed some mode lines. */
update_single_window (w);
flush_frame (f);
}
else
update_frame (f, true, true);
/* If cursor is in the echo area, make sure that the next
redisplay displays the minibuffer, so that the cursor will
be replaced with what the minibuffer wants. */
if (cursor_in_echo_area)
wset_redisplay (XWINDOW (mini_window));
}
}
else if (!EQ (mini_window, selected_window))
wset_redisplay (XWINDOW (mini_window));
/* Last displayed message is now the current message. */
echo_area_buffer[1] = echo_area_buffer[0];
/* Inform read_char that we're not echoing. */
echo_message_buffer = Qnil;
/* Prevent redisplay optimization in redisplay_internal by resetting
this_line_start_pos. This is done because the mini-buffer now
displays the message instead of its buffer text. */
if (EQ (mini_window, selected_window))
CHARPOS (this_line_start_pos) = 0;
if (window_height_changed_p)
{
fset_redisplay (f);
/* If window configuration was changed, frames may have been
marked garbaged. Clear them or we will experience
surprises wrt scrolling.
FIXME: How/why/when? */
clear_garbaged_frames ();
}
}
/* True if W's buffer was changed but not saved. */
static bool
window_buffer_changed (struct window *w)
{
struct buffer *b = XBUFFER (w->contents);
eassert (BUFFER_LIVE_P (b));
return (BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)) != w->last_had_star;
}
/* True if W has %c in its mode line and mode line should be updated. */
static bool
mode_line_update_needed (struct window *w)
{
return (w->column_number_displayed != -1
&& !(PT == w->last_point && !window_outdated (w))
&& (w->column_number_displayed != current_column ()));
}
/* True if window start of W is frozen and may not be changed during
redisplay. */
static bool
window_frozen_p (struct window *w)
{
if (FRAME_WINDOWS_FROZEN (XFRAME (WINDOW_FRAME (w))))
{
Lisp_Object window;
XSETWINDOW (window, w);
if (MINI_WINDOW_P (w))
return false;
else if (EQ (window, selected_window))
return false;
else if (MINI_WINDOW_P (XWINDOW (selected_window))
&& EQ (window, Vminibuf_scroll_window))
/* This special window can't be frozen too. */
return false;
else
return true;
}
return false;
}
/***********************************************************************
Mode Lines and Frame Titles
***********************************************************************/
/* A buffer for constructing non-propertized mode-line strings and
frame titles in it; allocated from the heap in init_xdisp and
resized as needed in store_mode_line_noprop_char. */
static char *mode_line_noprop_buf;
/* The buffer's end, and a current output position in it. */
static char *mode_line_noprop_buf_end;
static char *mode_line_noprop_ptr;
#define MODE_LINE_NOPROP_LEN(start) \
((mode_line_noprop_ptr - mode_line_noprop_buf) - start)
static enum {
MODE_LINE_DISPLAY = 0,
MODE_LINE_TITLE,
MODE_LINE_NOPROP,
MODE_LINE_STRING
} mode_line_target;
/* Alist that caches the results of :propertize.
Each element is (PROPERTIZED-STRING . PROPERTY-LIST). */
static Lisp_Object mode_line_proptrans_alist;
/* List of strings making up the mode-line. */
static Lisp_Object mode_line_string_list;
/* Base face property when building propertized mode line string. */
static Lisp_Object mode_line_string_face;
static Lisp_Object mode_line_string_face_prop;
/* Unwind data for mode line strings */
static Lisp_Object Vmode_line_unwind_vector;
static Lisp_Object
format_mode_line_unwind_data (struct frame *target_frame,
struct buffer *obuf,
Lisp_Object owin,
bool save_proptrans)
{
Lisp_Object vector, tmp;
/* Reduce consing by keeping one vector in
Vwith_echo_area_save_vector. */
vector = Vmode_line_unwind_vector;
Vmode_line_unwind_vector = Qnil;
if (NILP (vector))
vector = Fmake_vector (make_number (10), Qnil);
ASET (vector, 0, make_number (mode_line_target));
ASET (vector, 1, make_number (MODE_LINE_NOPROP_LEN (0)));
ASET (vector, 2, mode_line_string_list);
ASET (vector, 3, save_proptrans ? mode_line_proptrans_alist : Qt);
ASET (vector, 4, mode_line_string_face);
ASET (vector, 5, mode_line_string_face_prop);
if (obuf)
XSETBUFFER (tmp, obuf);
else
tmp = Qnil;
ASET (vector, 6, tmp);
ASET (vector, 7, owin);
if (target_frame)
{
/* Similarly to `with-selected-window', if the operation selects
a window on another frame, we must restore that frame's
selected window, and (for a tty) the top-frame. */
ASET (vector, 8, target_frame->selected_window);
if (FRAME_TERMCAP_P (target_frame))
ASET (vector, 9, FRAME_TTY (target_frame)->top_frame);
}
return vector;
}
static void
unwind_format_mode_line (Lisp_Object vector)
{
Lisp_Object old_window = AREF (vector, 7);
Lisp_Object target_frame_window = AREF (vector, 8);
Lisp_Object old_top_frame = AREF (vector, 9);
mode_line_target = XINT (AREF (vector, 0));
mode_line_noprop_ptr = mode_line_noprop_buf + XINT (AREF (vector, 1));
mode_line_string_list = AREF (vector, 2);
if (! EQ (AREF (vector, 3), Qt))
mode_line_proptrans_alist = AREF (vector, 3);
mode_line_string_face = AREF (vector, 4);
mode_line_string_face_prop = AREF (vector, 5);
/* Select window before buffer, since it may change the buffer. */
if (!NILP (old_window))
{
/* If the operation that we are unwinding had selected a window
on a different frame, reset its frame-selected-window. For a
text terminal, reset its top-frame if necessary. */
if (!NILP (target_frame_window))
{
Lisp_Object frame
= WINDOW_FRAME (XWINDOW (target_frame_window));
if (!EQ (frame, WINDOW_FRAME (XWINDOW (old_window))))
Fselect_window (target_frame_window, Qt);
if (!NILP (old_top_frame) && !EQ (old_top_frame, frame))
Fselect_frame (old_top_frame, Qt);
}
Fselect_window (old_window, Qt);
}
if (!NILP (AREF (vector, 6)))
{
set_buffer_internal_1 (XBUFFER (AREF (vector, 6)));
ASET (vector, 6, Qnil);
}
Vmode_line_unwind_vector = vector;
}
/* Store a single character C for the frame title in mode_line_noprop_buf.
Re-allocate mode_line_noprop_buf if necessary. */
static void
store_mode_line_noprop_char (char c)
{
/* If output position has reached the end of the allocated buffer,
increase the buffer's size. */
if (mode_line_noprop_ptr == mode_line_noprop_buf_end)
{
ptrdiff_t len = MODE_LINE_NOPROP_LEN (0);
ptrdiff_t size = len;
mode_line_noprop_buf =
xpalloc (mode_line_noprop_buf, &size, 1, STRING_BYTES_BOUND, 1);
mode_line_noprop_buf_end = mode_line_noprop_buf + size;
mode_line_noprop_ptr = mode_line_noprop_buf + len;
}
*mode_line_noprop_ptr++ = c;
}
/* Store part of a frame title in mode_line_noprop_buf, beginning at
mode_line_noprop_ptr. STRING is the string to store. Do not copy
characters that yield more columns than PRECISION; PRECISION <= 0
means copy the whole string. Pad with spaces until FIELD_WIDTH
number of characters have been copied; FIELD_WIDTH <= 0 means don't
pad. Called from display_mode_element when it is used to build a
frame title. */
static int
store_mode_line_noprop (const char *string, int field_width, int precision)
{
const unsigned char *str = (const unsigned char *) string;
int n = 0;
ptrdiff_t dummy, nbytes;
/* Copy at most PRECISION chars from STR. */
nbytes = strlen (string);
n += c_string_width (str, nbytes, precision, &dummy, &nbytes);
while (nbytes--)
store_mode_line_noprop_char (*str++);
/* Fill up with spaces until FIELD_WIDTH reached. */
while (field_width > 0
&& n < field_width)
{
store_mode_line_noprop_char (' ');
++n;
}
return n;
}
/***********************************************************************
Frame Titles
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
/* Set the title of FRAME, if it has changed. The title format is
Vicon_title_format if FRAME is iconified, otherwise it is
frame_title_format. */
static void
x_consider_frame_title (Lisp_Object frame)
{
struct frame *f = XFRAME (frame);
if ((FRAME_WINDOW_P (f)
|| FRAME_MINIBUF_ONLY_P (f)
|| f->explicit_name)
&& NILP (Fframe_parameter (frame, Qtooltip)))
{
/* Do we have more than one visible frame on this X display? */
Lisp_Object tail, other_frame, fmt;
ptrdiff_t title_start;
char *title;
ptrdiff_t len;
struct it it;
ptrdiff_t count = SPECPDL_INDEX ();
FOR_EACH_FRAME (tail, other_frame)
{
struct frame *tf = XFRAME (other_frame);
if (tf != f
&& FRAME_KBOARD (tf) == FRAME_KBOARD (f)
&& !FRAME_MINIBUF_ONLY_P (tf)
&& !EQ (other_frame, tip_frame)
&& (FRAME_VISIBLE_P (tf) || FRAME_ICONIFIED_P (tf)))
break;
}
/* Set global variable indicating that multiple frames exist. */
multiple_frames = CONSP (tail);
/* Switch to the buffer of selected window of the frame. Set up
mode_line_target so that display_mode_element will output into
mode_line_noprop_buf; then display the title. */
record_unwind_protect (unwind_format_mode_line,
format_mode_line_unwind_data
(f, current_buffer, selected_window, false));
/* select-frame calls resize_mini_window, which could resize the
mini-window and by that undo the effect of this redisplay
cycle wrt minibuffer and echo-area display. Binding
inhibit-redisplay to t makes the call to resize_mini_window a
no-op, thus avoiding the adverse side effects. */
specbind (Qinhibit_redisplay, Qt);
Fselect_window (f->selected_window, Qt);
set_buffer_internal_1
(XBUFFER (XWINDOW (f->selected_window)->contents));
fmt = FRAME_ICONIFIED_P (f) ? Vicon_title_format : Vframe_title_format;
mode_line_target = MODE_LINE_TITLE;
title_start = MODE_LINE_NOPROP_LEN (0);
init_iterator (&it, XWINDOW (f->selected_window), -1, -1,
NULL, DEFAULT_FACE_ID);
display_mode_element (&it, 0, -1, -1, fmt, Qnil, false);
len = MODE_LINE_NOPROP_LEN (title_start);
title = mode_line_noprop_buf + title_start;
unbind_to (count, Qnil);
/* Set the title only if it's changed. This avoids consing in
the common case where it hasn't. (If it turns out that we've
already wasted too much time by walking through the list with
display_mode_element, then we might need to optimize at a
higher level than this.) */
if (! STRINGP (f->name)
|| SBYTES (f->name) != len
|| memcmp (title, SDATA (f->name), len) != 0)
x_implicitly_set_name (f, make_string (title, len), Qnil);
}
}
#endif /* not HAVE_WINDOW_SYSTEM */
\f
/***********************************************************************
Menu Bars
***********************************************************************/
/* True if we will not redisplay all visible windows. */
#define REDISPLAY_SOME_P() \
((windows_or_buffers_changed == 0 \
|| windows_or_buffers_changed == REDISPLAY_SOME) \
&& (update_mode_lines == 0 \
|| update_mode_lines == REDISPLAY_SOME))
/* Prepare for redisplay by updating menu-bar item lists when
appropriate. This can call eval. */
static void
prepare_menu_bars (void)
{
bool all_windows = windows_or_buffers_changed || update_mode_lines;
bool some_windows = REDISPLAY_SOME_P ();
Lisp_Object tooltip_frame;
#ifdef HAVE_WINDOW_SYSTEM
tooltip_frame = tip_frame;
#else
tooltip_frame = Qnil;
#endif
if (FUNCTIONP (Vpre_redisplay_function))
{
Lisp_Object windows = all_windows ? Qt : Qnil;
if (all_windows && some_windows)
{
Lisp_Object ws = window_list ();
for (windows = Qnil; CONSP (ws); ws = XCDR (ws))
{
Lisp_Object this = XCAR (ws);
struct window *w = XWINDOW (this);
if (w->redisplay
|| XFRAME (w->frame)->redisplay
|| XBUFFER (w->contents)->text->redisplay)
{
windows = Fcons (this, windows);
}
}
}
safe__call1 (true, Vpre_redisplay_function, windows);
}
/* Update all frame titles based on their buffer names, etc. We do
this before the menu bars so that the buffer-menu will show the
up-to-date frame titles. */
#ifdef HAVE_WINDOW_SYSTEM
if (all_windows)
{
Lisp_Object tail, frame;
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
struct window *w = XWINDOW (FRAME_SELECTED_WINDOW (f));
if (some_windows
&& !f->redisplay
&& !w->redisplay
&& !XBUFFER (w->contents)->text->redisplay)
continue;
if (!EQ (frame, tooltip_frame)
&& (FRAME_ICONIFIED_P (f)
|| FRAME_VISIBLE_P (f) == 1
/* Exclude TTY frames that are obscured because they
are not the top frame on their console. This is
because x_consider_frame_title actually switches
to the frame, which for TTY frames means it is
marked as garbaged, and will be completely
redrawn on the next redisplay cycle. This causes
TTY frames to be completely redrawn, when there
are more than one of them, even though nothing
should be changed on display. */
|| (FRAME_VISIBLE_P (f) == 2 && FRAME_WINDOW_P (f))))
x_consider_frame_title (frame);
}
}
#endif /* HAVE_WINDOW_SYSTEM */
/* Update the menu bar item lists, if appropriate. This has to be
done before any actual redisplay or generation of display lines. */
if (all_windows)
{
Lisp_Object tail, frame;
ptrdiff_t count = SPECPDL_INDEX ();
/* True means that update_menu_bar has run its hooks
so any further calls to update_menu_bar shouldn't do so again. */
bool menu_bar_hooks_run = false;
record_unwind_save_match_data ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
struct window *w = XWINDOW (FRAME_SELECTED_WINDOW (f));
/* Ignore tooltip frame. */
if (EQ (frame, tooltip_frame))
continue;
if (some_windows
&& !f->redisplay
&& !w->redisplay
&& !XBUFFER (w->contents)->text->redisplay)
continue;
run_window_size_change_functions (frame);
menu_bar_hooks_run = update_menu_bar (f, false, menu_bar_hooks_run);
#ifdef HAVE_WINDOW_SYSTEM
update_tool_bar (f, false);
#endif
}
unbind_to (count, Qnil);
}
else
{
struct frame *sf = SELECTED_FRAME ();
update_menu_bar (sf, true, false);
#ifdef HAVE_WINDOW_SYSTEM
update_tool_bar (sf, true);
#endif
}
}
/* Update the menu bar item list for frame F. This has to be done
before we start to fill in any display lines, because it can call
eval.
If SAVE_MATCH_DATA, we must save and restore it here.
If HOOKS_RUN, a previous call to update_menu_bar
already ran the menu bar hooks for this redisplay, so there
is no need to run them again. The return value is the
updated value of this flag, to pass to the next call. */
static bool
update_menu_bar (struct frame *f, bool save_match_data, bool hooks_run)
{
Lisp_Object window;
struct window *w;
/* If called recursively during a menu update, do nothing. This can
happen when, for instance, an activate-menubar-hook causes a
redisplay. */
if (inhibit_menubar_update)
return hooks_run;
window = FRAME_SELECTED_WINDOW (f);
w = XWINDOW (window);
if (FRAME_WINDOW_P (f)
?
#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) \
|| defined (HAVE_NS) || defined (USE_GTK)
FRAME_EXTERNAL_MENU_BAR (f)
#else
FRAME_MENU_BAR_LINES (f) > 0
#endif
: FRAME_MENU_BAR_LINES (f) > 0)
{
/* If the user has switched buffers or windows, we need to
recompute to reflect the new bindings. But we'll
recompute when update_mode_lines is set too; that means
that people can use force-mode-line-update to request
that the menu bar be recomputed. The adverse effect on
the rest of the redisplay algorithm is about the same as
windows_or_buffers_changed anyway. */
if (windows_or_buffers_changed
/* This used to test w->update_mode_line, but we believe
there is no need to recompute the menu in that case. */
|| update_mode_lines
|| window_buffer_changed (w))
{
struct buffer *prev = current_buffer;
ptrdiff_t count = SPECPDL_INDEX ();
specbind (Qinhibit_menubar_update, Qt);
set_buffer_internal_1 (XBUFFER (w->contents));
if (save_match_data)
record_unwind_save_match_data ();
if (NILP (Voverriding_local_map_menu_flag))
{
specbind (Qoverriding_terminal_local_map, Qnil);
specbind (Qoverriding_local_map, Qnil);
}
if (!hooks_run)
{
/* Run the Lucid hook. */
safe_run_hooks (Qactivate_menubar_hook);
/* If it has changed current-menubar from previous value,
really recompute the menu-bar from the value. */
if (! NILP (Vlucid_menu_bar_dirty_flag))
call0 (Qrecompute_lucid_menubar);
safe_run_hooks (Qmenu_bar_update_hook);
hooks_run = true;
}
XSETFRAME (Vmenu_updating_frame, f);
fset_menu_bar_items (f, menu_bar_items (FRAME_MENU_BAR_ITEMS (f)));
/* Redisplay the menu bar in case we changed it. */
#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) \
|| defined (HAVE_NS) || defined (USE_GTK)
if (FRAME_WINDOW_P (f))
{
#if defined (HAVE_NS)
/* All frames on Mac OS share the same menubar. So only
the selected frame should be allowed to set it. */
if (f == SELECTED_FRAME ())
#endif
set_frame_menubar (f, false, false);
}
else
/* On a terminal screen, the menu bar is an ordinary screen
line, and this makes it get updated. */
w->update_mode_line = true;
#else /* ! (USE_X_TOOLKIT || HAVE_NTGUI || HAVE_NS || USE_GTK) */
/* In the non-toolkit version, the menu bar is an ordinary screen
line, and this makes it get updated. */
w->update_mode_line = true;
#endif /* ! (USE_X_TOOLKIT || HAVE_NTGUI || HAVE_NS || USE_GTK) */
unbind_to (count, Qnil);
set_buffer_internal_1 (prev);
}
}
return hooks_run;
}
/***********************************************************************
Tool-bars
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
/* Select `frame' temporarily without running all the code in
do_switch_frame.
FIXME: Maybe do_switch_frame should be trimmed down similarly
when `norecord' is set. */
static void
fast_set_selected_frame (Lisp_Object frame)
{
if (!EQ (selected_frame, frame))
{
selected_frame = frame;
selected_window = XFRAME (frame)->selected_window;
}
}
/* Update the tool-bar item list for frame F. This has to be done
before we start to fill in any display lines. Called from
prepare_menu_bars. If SAVE_MATCH_DATA, we must save
and restore it here. */
static void
update_tool_bar (struct frame *f, bool save_match_data)
{
#if defined (USE_GTK) || defined (HAVE_NS)
bool do_update = FRAME_EXTERNAL_TOOL_BAR (f);
#else
bool do_update = (WINDOWP (f->tool_bar_window)
&& WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0);
#endif
if (do_update)
{
Lisp_Object window;
struct window *w;
window = FRAME_SELECTED_WINDOW (f);
w = XWINDOW (window);
/* If the user has switched buffers or windows, we need to
recompute to reflect the new bindings. But we'll
recompute when update_mode_lines is set too; that means
that people can use force-mode-line-update to request
that the menu bar be recomputed. The adverse effect on
the rest of the redisplay algorithm is about the same as
windows_or_buffers_changed anyway. */
if (windows_or_buffers_changed
|| w->update_mode_line
|| update_mode_lines
|| window_buffer_changed (w))
{
struct buffer *prev = current_buffer;
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object frame, new_tool_bar;
int new_n_tool_bar;
/* Set current_buffer to the buffer of the selected
window of the frame, so that we get the right local
keymaps. */
set_buffer_internal_1 (XBUFFER (w->contents));
/* Save match data, if we must. */
if (save_match_data)
record_unwind_save_match_data ();
/* Make sure that we don't accidentally use bogus keymaps. */
if (NILP (Voverriding_local_map_menu_flag))
{
specbind (Qoverriding_terminal_local_map, Qnil);
specbind (Qoverriding_local_map, Qnil);
}
/* We must temporarily set the selected frame to this frame
before calling tool_bar_items, because the calculation of
the tool-bar keymap uses the selected frame (see
`tool-bar-make-keymap' in tool-bar.el). */
eassert (EQ (selected_window,
/* Since we only explicitly preserve selected_frame,
check that selected_window would be redundant. */
XFRAME (selected_frame)->selected_window));
record_unwind_protect (fast_set_selected_frame, selected_frame);
XSETFRAME (frame, f);
fast_set_selected_frame (frame);
/* Build desired tool-bar items from keymaps. */
new_tool_bar
= tool_bar_items (Fcopy_sequence (f->tool_bar_items),
&new_n_tool_bar);
/* Redisplay the tool-bar if we changed it. */
if (new_n_tool_bar != f->n_tool_bar_items
|| NILP (Fequal (new_tool_bar, f->tool_bar_items)))
{
/* Redisplay that happens asynchronously due to an expose event
may access f->tool_bar_items. Make sure we update both
variables within BLOCK_INPUT so no such event interrupts. */
block_input ();
fset_tool_bar_items (f, new_tool_bar);
f->n_tool_bar_items = new_n_tool_bar;
w->update_mode_line = true;
unblock_input ();
}
unbind_to (count, Qnil);
set_buffer_internal_1 (prev);
}
}
}
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
/* Set F->desired_tool_bar_string to a Lisp string representing frame
F's desired tool-bar contents. F->tool_bar_items must have
been set up previously by calling prepare_menu_bars. */
static void
build_desired_tool_bar_string (struct frame *f)
{
int i, size, size_needed;
Lisp_Object image, plist;
image = plist = Qnil;
/* Prepare F->desired_tool_bar_string. If we can reuse it, do so.
Otherwise, make a new string. */
/* The size of the string we might be able to reuse. */
size = (STRINGP (f->desired_tool_bar_string)
? SCHARS (f->desired_tool_bar_string)
: 0);
/* We need one space in the string for each image. */
size_needed = f->n_tool_bar_items;
/* Reuse f->desired_tool_bar_string, if possible. */
if (size < size_needed || NILP (f->desired_tool_bar_string))
fset_desired_tool_bar_string
(f, Fmake_string (make_number (size_needed), make_number (' ')));
else
{
AUTO_LIST4 (props, Qdisplay, Qnil, Qmenu_item, Qnil);
Fremove_text_properties (make_number (0), make_number (size),
props, f->desired_tool_bar_string);
}
/* Put a `display' property on the string for the images to display,
put a `menu_item' property on tool-bar items with a value that
is the index of the item in F's tool-bar item vector. */
for (i = 0; i < f->n_tool_bar_items; ++i)
{
#define PROP(IDX) \
AREF (f->tool_bar_items, i * TOOL_BAR_ITEM_NSLOTS + (IDX))
bool enabled_p = !NILP (PROP (TOOL_BAR_ITEM_ENABLED_P));
bool selected_p = !NILP (PROP (TOOL_BAR_ITEM_SELECTED_P));
int hmargin, vmargin, relief, idx, end;
/* If image is a vector, choose the image according to the
button state. */
image = PROP (TOOL_BAR_ITEM_IMAGES);
if (VECTORP (image))
{
if (enabled_p)
idx = (selected_p
? TOOL_BAR_IMAGE_ENABLED_SELECTED
: TOOL_BAR_IMAGE_ENABLED_DESELECTED);
else
idx = (selected_p
? TOOL_BAR_IMAGE_DISABLED_SELECTED
: TOOL_BAR_IMAGE_DISABLED_DESELECTED);
eassert (ASIZE (image) >= idx);
image = AREF (image, idx);
}
else
idx = -1;
/* Ignore invalid image specifications. */
if (!valid_image_p (image))
continue;
/* Display the tool-bar button pressed, or depressed. */
plist = Fcopy_sequence (XCDR (image));
/* Compute margin and relief to draw. */
relief = (tool_bar_button_relief >= 0
? tool_bar_button_relief
: DEFAULT_TOOL_BAR_BUTTON_RELIEF);
hmargin = vmargin = relief;
if (RANGED_INTEGERP (1, Vtool_bar_button_margin,
INT_MAX - max (hmargin, vmargin)))
{
hmargin += XFASTINT (Vtool_bar_button_margin);
vmargin += XFASTINT (Vtool_bar_button_margin);
}
else if (CONSP (Vtool_bar_button_margin))
{
if (RANGED_INTEGERP (1, XCAR (Vtool_bar_button_margin),
INT_MAX - hmargin))
hmargin += XFASTINT (XCAR (Vtool_bar_button_margin));
if (RANGED_INTEGERP (1, XCDR (Vtool_bar_button_margin),
INT_MAX - vmargin))
vmargin += XFASTINT (XCDR (Vtool_bar_button_margin));
}
if (auto_raise_tool_bar_buttons_p)
{
/* Add a `:relief' property to the image spec if the item is
selected. */
if (selected_p)
{
plist = Fplist_put (plist, QCrelief, make_number (-relief));
hmargin -= relief;
vmargin -= relief;
}
}
else
{
/* If image is selected, display it pressed, i.e. with a
negative relief. If it's not selected, display it with a
raised relief. */
plist = Fplist_put (plist, QCrelief,
(selected_p
? make_number (-relief)
: make_number (relief)));
hmargin -= relief;
vmargin -= relief;
}
/* Put a margin around the image. */
if (hmargin || vmargin)
{
if (hmargin == vmargin)
plist = Fplist_put (plist, QCmargin, make_number (hmargin));
else
plist = Fplist_put (plist, QCmargin,
Fcons (make_number (hmargin),
make_number (vmargin)));
}
/* If button is not enabled, and we don't have special images
for the disabled state, make the image appear disabled by
applying an appropriate algorithm to it. */
if (!enabled_p && idx < 0)
plist = Fplist_put (plist, QCconversion, Qdisabled);
/* Put a `display' text property on the string for the image to
display. Put a `menu-item' property on the string that gives
the start of this item's properties in the tool-bar items
vector. */
image = Fcons (Qimage, plist);
AUTO_LIST4 (props, Qdisplay, image, Qmenu_item,
make_number (i * TOOL_BAR_ITEM_NSLOTS));
/* Let the last image hide all remaining spaces in the tool bar
string. The string can be longer than needed when we reuse a
previous string. */
if (i + 1 == f->n_tool_bar_items)
end = SCHARS (f->desired_tool_bar_string);
else
end = i + 1;
Fadd_text_properties (make_number (i), make_number (end),
props, f->desired_tool_bar_string);
#undef PROP
}
}
/* Display one line of the tool-bar of frame IT->f.
HEIGHT specifies the desired height of the tool-bar line.
If the actual height of the glyph row is less than HEIGHT, the
row's height is increased to HEIGHT, and the icons are centered
vertically in the new height.
If HEIGHT is -1, we are counting needed tool-bar lines, so don't
count a final empty row in case the tool-bar width exactly matches
the window width.
*/
static void
display_tool_bar_line (struct it *it, int height)
{
struct glyph_row *row = it->glyph_row;
int max_x = it->last_visible_x;
struct glyph *last;
/* Don't extend on a previously drawn tool bar items (Bug#16058). */
clear_glyph_row (row);
row->enabled_p = true;
row->y = it->current_y;
/* Note that this isn't made use of if the face hasn't a box,
so there's no need to check the face here. */
it->start_of_box_run_p = true;
while (it->current_x < max_x)
{
int x, n_glyphs_before, i, nglyphs;
struct it it_before;
/* Get the next display element. */
if (!get_next_display_element (it))
{
/* Don't count empty row if we are counting needed tool-bar lines. */
if (height < 0 && !it->hpos)
return;
break;
}
/* Produce glyphs. */
n_glyphs_before = row->used[TEXT_AREA];
it_before = *it;
PRODUCE_GLYPHS (it);
nglyphs = row->used[TEXT_AREA] - n_glyphs_before;
i = 0;
x = it_before.current_x;
while (i < nglyphs)
{
struct glyph *glyph = row->glyphs[TEXT_AREA] + n_glyphs_before + i;
if (x + glyph->pixel_width > max_x)
{
/* Glyph doesn't fit on line. Backtrack. */
row->used[TEXT_AREA] = n_glyphs_before;
*it = it_before;
/* If this is the only glyph on this line, it will never fit on the
tool-bar, so skip it. But ensure there is at least one glyph,
so we don't accidentally disable the tool-bar. */
if (n_glyphs_before == 0
&& (it->vpos > 0 || IT_STRING_CHARPOS (*it) < it->end_charpos-1))
break;
goto out;
}
++it->hpos;
x += glyph->pixel_width;
++i;
}
/* Stop at line end. */
if (ITERATOR_AT_END_OF_LINE_P (it))
break;
set_iterator_to_next (it, true);
}
out:;
row->displays_text_p = row->used[TEXT_AREA] != 0;
/* Use default face for the border below the tool bar.
FIXME: When auto-resize-tool-bars is grow-only, there is
no additional border below the possibly empty tool-bar lines.
So to make the extra empty lines look "normal", we have to
use the tool-bar face for the border too. */
if (!MATRIX_ROW_DISPLAYS_TEXT_P (row)
&& !EQ (Vauto_resize_tool_bars, Qgrow_only))
it->face_id = DEFAULT_FACE_ID;
extend_face_to_end_of_line (it);
last = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1;
last->right_box_line_p = true;
if (last == row->glyphs[TEXT_AREA])
last->left_box_line_p = true;
/* Make line the desired height and center it vertically. */
if ((height -= it->max_ascent + it->max_descent) > 0)
{
/* Don't add more than one line height. */
height %= FRAME_LINE_HEIGHT (it->f);
it->max_ascent += height / 2;
it->max_descent += (height + 1) / 2;
}
compute_line_metrics (it);
/* If line is empty, make it occupy the rest of the tool-bar. */
if (!MATRIX_ROW_DISPLAYS_TEXT_P (row))
{
row->height = row->phys_height = it->last_visible_y - row->y;
row->visible_height = row->height;
row->ascent = row->phys_ascent = 0;
row->extra_line_spacing = 0;
}
row->full_width_p = true;
row->continued_p = false;
row->truncated_on_left_p = false;
row->truncated_on_right_p = false;
it->current_x = it->hpos = 0;
it->current_y += row->height;
++it->vpos;
++it->glyph_row;
}
/* Value is the number of pixels needed to make all tool-bar items of
frame F visible. The actual number of glyph rows needed is
returned in *N_ROWS if non-NULL. */
static int
tool_bar_height (struct frame *f, int *n_rows, bool pixelwise)
{
struct window *w = XWINDOW (f->tool_bar_window);
struct it it;
/* tool_bar_height is called from redisplay_tool_bar after building
the desired matrix, so use (unused) mode-line row as temporary row to
avoid destroying the first tool-bar row. */
struct glyph_row *temp_row = MATRIX_MODE_LINE_ROW (w->desired_matrix);
/* Initialize an iterator for iteration over
F->desired_tool_bar_string in the tool-bar window of frame F. */
init_iterator (&it, w, -1, -1, temp_row, TOOL_BAR_FACE_ID);
temp_row->reversed_p = false;
it.first_visible_x = 0;
it.last_visible_x = WINDOW_PIXEL_WIDTH (w);
reseat_to_string (&it, NULL, f->desired_tool_bar_string, 0, 0, 0, -1);
it.paragraph_embedding = L2R;
while (!ITERATOR_AT_END_P (&it))
{
clear_glyph_row (temp_row);
it.glyph_row = temp_row;
display_tool_bar_line (&it, -1);
}
clear_glyph_row (temp_row);
/* f->n_tool_bar_rows == 0 means "unknown"; -1 means no tool-bar. */
if (n_rows)
*n_rows = it.vpos > 0 ? it.vpos : -1;
if (pixelwise)
return it.current_y;
else
return (it.current_y + FRAME_LINE_HEIGHT (f) - 1) / FRAME_LINE_HEIGHT (f);
}
#endif /* !USE_GTK && !HAVE_NS */
DEFUN ("tool-bar-height", Ftool_bar_height, Stool_bar_height,
0, 2, 0,
doc: /* Return the number of lines occupied by the tool bar of FRAME.
If FRAME is nil or omitted, use the selected frame. Optional argument
PIXELWISE non-nil means return the height of the tool bar in pixels. */)
(Lisp_Object frame, Lisp_Object pixelwise)
{
int height = 0;
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
struct frame *f = decode_any_frame (frame);
if (WINDOWP (f->tool_bar_window)
&& WINDOW_PIXEL_HEIGHT (XWINDOW (f->tool_bar_window)) > 0)
{
update_tool_bar (f, true);
if (f->n_tool_bar_items)
{
build_desired_tool_bar_string (f);
height = tool_bar_height (f, NULL, !NILP (pixelwise));
}
}
#endif
return make_number (height);
}
/* Display the tool-bar of frame F. Value is true if tool-bar's
height should be changed. */
static bool
redisplay_tool_bar (struct frame *f)
{
f->tool_bar_redisplayed = true;
#if defined (USE_GTK) || defined (HAVE_NS)
if (FRAME_EXTERNAL_TOOL_BAR (f))
update_frame_tool_bar (f);
return false;
#else /* !USE_GTK && !HAVE_NS */
struct window *w;
struct it it;
struct glyph_row *row;
/* If frame hasn't a tool-bar window or if it is zero-height, don't
do anything. This means you must start with tool-bar-lines
non-zero to get the auto-sizing effect. Or in other words, you
can turn off tool-bars by specifying tool-bar-lines zero. */
if (!WINDOWP (f->tool_bar_window)
|| (w = XWINDOW (f->tool_bar_window),
WINDOW_TOTAL_LINES (w) == 0))
return false;
/* Set up an iterator for the tool-bar window. */
init_iterator (&it, w, -1, -1, w->desired_matrix->rows, TOOL_BAR_FACE_ID);
it.first_visible_x = 0;
it.last_visible_x = WINDOW_PIXEL_WIDTH (w);
row = it.glyph_row;
row->reversed_p = false;
/* Build a string that represents the contents of the tool-bar. */
build_desired_tool_bar_string (f);
reseat_to_string (&it, NULL, f->desired_tool_bar_string, 0, 0, 0, -1);
/* FIXME: This should be controlled by a user option. But it
doesn't make sense to have an R2L tool bar if the menu bar cannot
be drawn also R2L, and making the menu bar R2L is tricky due
toolkit-specific code that implements it. If an R2L tool bar is
ever supported, display_tool_bar_line should also be augmented to
call unproduce_glyphs like display_line and display_string
do. */
it.paragraph_embedding = L2R;
if (f->n_tool_bar_rows == 0)
{
int new_height = tool_bar_height (f, &f->n_tool_bar_rows, true);
if (new_height != WINDOW_PIXEL_HEIGHT (w))
{
x_change_tool_bar_height (f, new_height);
frame_default_tool_bar_height = new_height;
/* Always do that now. */
clear_glyph_matrix (w->desired_matrix);
f->fonts_changed = true;
return true;
}
}
/* Display as many lines as needed to display all tool-bar items. */
if (f->n_tool_bar_rows > 0)
{
int border, rows, height, extra;
if (TYPE_RANGED_INTEGERP (int, Vtool_bar_border))
border = XINT (Vtool_bar_border);
else if (EQ (Vtool_bar_border, Qinternal_border_width))
border = FRAME_INTERNAL_BORDER_WIDTH (f);
else if (EQ (Vtool_bar_border, Qborder_width))
border = f->border_width;
else
border = 0;
if (border < 0)
border = 0;
rows = f->n_tool_bar_rows;
height = max (1, (it.last_visible_y - border) / rows);
extra = it.last_visible_y - border - height * rows;
while (it.current_y < it.last_visible_y)
{
int h = 0;
if (extra > 0 && rows-- > 0)
{
h = (extra + rows - 1) / rows;
extra -= h;
}
display_tool_bar_line (&it, height + h);
}
}
else
{
while (it.current_y < it.last_visible_y)
display_tool_bar_line (&it, 0);
}
/* It doesn't make much sense to try scrolling in the tool-bar
window, so don't do it. */
w->desired_matrix->no_scrolling_p = true;
w->must_be_updated_p = true;
if (!NILP (Vauto_resize_tool_bars))
{
bool change_height_p = true;
/* If we couldn't display everything, change the tool-bar's
height if there is room for more. */
if (IT_STRING_CHARPOS (it) < it.end_charpos)
change_height_p = true;
/* We subtract 1 because display_tool_bar_line advances the
glyph_row pointer before returning to its caller. We want to
examine the last glyph row produced by
display_tool_bar_line. */
row = it.glyph_row - 1;
/* If there are blank lines at the end, except for a partially
visible blank line at the end that is smaller than
FRAME_LINE_HEIGHT, change the tool-bar's height. */
if (!MATRIX_ROW_DISPLAYS_TEXT_P (row)
&& row->height >= FRAME_LINE_HEIGHT (f))
change_height_p = true;
/* If row displays tool-bar items, but is partially visible,
change the tool-bar's height. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (row)
&& MATRIX_ROW_BOTTOM_Y (row) > it.last_visible_y)
change_height_p = true;
/* Resize windows as needed by changing the `tool-bar-lines'
frame parameter. */
if (change_height_p)
{
int nrows;
int new_height = tool_bar_height (f, &nrows, true);
change_height_p = ((EQ (Vauto_resize_tool_bars, Qgrow_only)
&& !f->minimize_tool_bar_window_p)
? (new_height > WINDOW_PIXEL_HEIGHT (w))
: (new_height != WINDOW_PIXEL_HEIGHT (w)));
f->minimize_tool_bar_window_p = false;
if (change_height_p)
{
x_change_tool_bar_height (f, new_height);
frame_default_tool_bar_height = new_height;
clear_glyph_matrix (w->desired_matrix);
f->n_tool_bar_rows = nrows;
f->fonts_changed = true;
return true;
}
}
}
f->minimize_tool_bar_window_p = false;
return false;
#endif /* USE_GTK || HAVE_NS */
}
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
/* Get information about the tool-bar item which is displayed in GLYPH
on frame F. Return in *PROP_IDX the index where tool-bar item
properties start in F->tool_bar_items. Value is false if
GLYPH doesn't display a tool-bar item. */
static bool
tool_bar_item_info (struct frame *f, struct glyph *glyph, int *prop_idx)
{
Lisp_Object prop;
int charpos;
/* This function can be called asynchronously, which means we must
exclude any possibility that Fget_text_property signals an
error. */
charpos = min (SCHARS (f->current_tool_bar_string), glyph->charpos);
charpos = max (0, charpos);
/* Get the text property `menu-item' at pos. The value of that
property is the start index of this item's properties in
F->tool_bar_items. */
prop = Fget_text_property (make_number (charpos),
Qmenu_item, f->current_tool_bar_string);
if (! INTEGERP (prop))
return false;
*prop_idx = XINT (prop);
return true;
}
\f
/* Get information about the tool-bar item at position X/Y on frame F.
Return in *GLYPH a pointer to the glyph of the tool-bar item in
the current matrix of the tool-bar window of F, or NULL if not
on a tool-bar item. Return in *PROP_IDX the index of the tool-bar
item in F->tool_bar_items. Value is
-1 if X/Y is not on a tool-bar item
0 if X/Y is on the same item that was highlighted before.
1 otherwise. */
static int
get_tool_bar_item (struct frame *f, int x, int y, struct glyph **glyph,
int *hpos, int *vpos, int *prop_idx)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
struct window *w = XWINDOW (f->tool_bar_window);
int area;
/* Find the glyph under X/Y. */
*glyph = x_y_to_hpos_vpos (w, x, y, hpos, vpos, 0, 0, &area);
if (*glyph == NULL)
return -1;
/* Get the start of this tool-bar item's properties in
f->tool_bar_items. */
if (!tool_bar_item_info (f, *glyph, prop_idx))
return -1;
/* Is mouse on the highlighted item? */
if (EQ (f->tool_bar_window, hlinfo->mouse_face_window)
&& *vpos >= hlinfo->mouse_face_beg_row
&& *vpos <= hlinfo->mouse_face_end_row
&& (*vpos > hlinfo->mouse_face_beg_row
|| *hpos >= hlinfo->mouse_face_beg_col)
&& (*vpos < hlinfo->mouse_face_end_row
|| *hpos < hlinfo->mouse_face_end_col
|| hlinfo->mouse_face_past_end))
return 0;
return 1;
}
/* EXPORT:
Handle mouse button event on the tool-bar of frame F, at
frame-relative coordinates X/Y. DOWN_P is true for a button press,
false for button release. MODIFIERS is event modifiers for button
release. */
void
handle_tool_bar_click (struct frame *f, int x, int y, bool down_p,
int modifiers)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
struct window *w = XWINDOW (f->tool_bar_window);
int hpos, vpos, prop_idx;
struct glyph *glyph;
Lisp_Object enabled_p;
int ts;
/* If not on the highlighted tool-bar item, and mouse-highlight is
non-nil, return. This is so we generate the tool-bar button
click only when the mouse button is released on the same item as
where it was pressed. However, when mouse-highlight is disabled,
generate the click when the button is released regardless of the
highlight, since tool-bar items are not highlighted in that
case. */
frame_to_window_pixel_xy (w, &x, &y);
ts = get_tool_bar_item (f, x, y, &glyph, &hpos, &vpos, &prop_idx);
if (ts == -1
|| (ts != 0 && !NILP (Vmouse_highlight)))
return;
/* When mouse-highlight is off, generate the click for the item
where the button was pressed, disregarding where it was
released. */
if (NILP (Vmouse_highlight) && !down_p)
prop_idx = f->last_tool_bar_item;
/* If item is disabled, do nothing. */
enabled_p = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_ENABLED_P);
if (NILP (enabled_p))
return;
if (down_p)
{
/* Show item in pressed state. */
if (!NILP (Vmouse_highlight))
show_mouse_face (hlinfo, DRAW_IMAGE_SUNKEN);
f->last_tool_bar_item = prop_idx;
}
else
{
Lisp_Object key, frame;
struct input_event event;
EVENT_INIT (event);
/* Show item in released state. */
if (!NILP (Vmouse_highlight))
show_mouse_face (hlinfo, DRAW_IMAGE_RAISED);
key = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_KEY);
XSETFRAME (frame, f);
event.kind = TOOL_BAR_EVENT;
event.frame_or_window = frame;
event.arg = frame;
kbd_buffer_store_event (&event);
event.kind = TOOL_BAR_EVENT;
event.frame_or_window = frame;
event.arg = key;
event.modifiers = modifiers;
kbd_buffer_store_event (&event);
f->last_tool_bar_item = -1;
}
}
/* Possibly highlight a tool-bar item on frame F when mouse moves to
tool-bar window-relative coordinates X/Y. Called from
note_mouse_highlight. */
static void
note_tool_bar_highlight (struct frame *f, int x, int y)
{
Lisp_Object window = f->tool_bar_window;
struct window *w = XWINDOW (window);
Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f);
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
int hpos, vpos;
struct glyph *glyph;
struct glyph_row *row;
int i;
Lisp_Object enabled_p;
int prop_idx;
enum draw_glyphs_face draw = DRAW_IMAGE_RAISED;
bool mouse_down_p;
int rc;
/* Function note_mouse_highlight is called with negative X/Y
values when mouse moves outside of the frame. */
if (x <= 0 || y <= 0)
{
clear_mouse_face (hlinfo);
return;
}
rc = get_tool_bar_item (f, x, y, &glyph, &hpos, &vpos, &prop_idx);
if (rc < 0)
{
/* Not on tool-bar item. */
clear_mouse_face (hlinfo);
return;
}
else if (rc == 0)
/* On same tool-bar item as before. */
goto set_help_echo;
clear_mouse_face (hlinfo);
/* Mouse is down, but on different tool-bar item? */
mouse_down_p = (x_mouse_grabbed (dpyinfo)
&& f == dpyinfo->last_mouse_frame);
if (mouse_down_p && f->last_tool_bar_item != prop_idx)
return;
draw = mouse_down_p ? DRAW_IMAGE_SUNKEN : DRAW_IMAGE_RAISED;
/* If tool-bar item is not enabled, don't highlight it. */
enabled_p = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_ENABLED_P);
if (!NILP (enabled_p) && !NILP (Vmouse_highlight))
{
/* Compute the x-position of the glyph. In front and past the
image is a space. We include this in the highlighted area. */
row = MATRIX_ROW (w->current_matrix, vpos);
for (i = x = 0; i < hpos; ++i)
x += row->glyphs[TEXT_AREA][i].pixel_width;
/* Record this as the current active region. */
hlinfo->mouse_face_beg_col = hpos;
hlinfo->mouse_face_beg_row = vpos;
hlinfo->mouse_face_beg_x = x;
hlinfo->mouse_face_past_end = false;
hlinfo->mouse_face_end_col = hpos + 1;
hlinfo->mouse_face_end_row = vpos;
hlinfo->mouse_face_end_x = x + glyph->pixel_width;
hlinfo->mouse_face_window = window;
hlinfo->mouse_face_face_id = TOOL_BAR_FACE_ID;
/* Display it as active. */
show_mouse_face (hlinfo, draw);
}
set_help_echo:
/* Set help_echo_string to a help string to display for this tool-bar item.
XTread_socket does the rest. */
help_echo_object = help_echo_window = Qnil;
help_echo_pos = -1;
help_echo_string = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_HELP);
if (NILP (help_echo_string))
help_echo_string = AREF (f->tool_bar_items, prop_idx + TOOL_BAR_ITEM_CAPTION);
}
#endif /* !USE_GTK && !HAVE_NS */
#endif /* HAVE_WINDOW_SYSTEM */
\f
/************************************************************************
Horizontal scrolling
************************************************************************/
/* For all leaf windows in the window tree rooted at WINDOW, set their
hscroll value so that PT is (i) visible in the window, and (ii) so
that it is not within a certain margin at the window's left and
right border. Value is true if any window's hscroll has been
changed. */
static bool
hscroll_window_tree (Lisp_Object window)
{
bool hscrolled_p = false;
bool hscroll_relative_p = FLOATP (Vhscroll_step);
int hscroll_step_abs = 0;
double hscroll_step_rel = 0;
if (hscroll_relative_p)
{
hscroll_step_rel = XFLOAT_DATA (Vhscroll_step);
if (hscroll_step_rel < 0)
{
hscroll_relative_p = false;
hscroll_step_abs = 0;
}
}
else if (TYPE_RANGED_INTEGERP (int, Vhscroll_step))
{
hscroll_step_abs = XINT (Vhscroll_step);
if (hscroll_step_abs < 0)
hscroll_step_abs = 0;
}
else
hscroll_step_abs = 0;
while (WINDOWP (window))
{
struct window *w = XWINDOW (window);
if (WINDOWP (w->contents))
hscrolled_p |= hscroll_window_tree (w->contents);
else if (w->cursor.vpos >= 0)
{
int h_margin;
int text_area_width;
struct glyph_row *cursor_row;
struct glyph_row *bottom_row;
bottom_row = MATRIX_BOTTOM_TEXT_ROW (w->desired_matrix, w);
if (w->cursor.vpos < bottom_row - w->desired_matrix->rows)
cursor_row = MATRIX_ROW (w->desired_matrix, w->cursor.vpos);
else
cursor_row = bottom_row - 1;
if (!cursor_row->enabled_p)
{
bottom_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w);
if (w->cursor.vpos < bottom_row - w->current_matrix->rows)
cursor_row = MATRIX_ROW (w->current_matrix, w->cursor.vpos);
else
cursor_row = bottom_row - 1;
}
bool row_r2l_p = cursor_row->reversed_p;
text_area_width = window_box_width (w, TEXT_AREA);
/* Scroll when cursor is inside this scroll margin. */
h_margin = hscroll_margin * WINDOW_FRAME_COLUMN_WIDTH (w);
/* If the position of this window's point has explicitly
changed, no more suspend auto hscrolling. */
if (NILP (Fequal (Fwindow_point (window), Fwindow_old_point (window))))
w->suspend_auto_hscroll = false;
/* Remember window point. */
Fset_marker (w->old_pointm,
((w == XWINDOW (selected_window))
? make_number (BUF_PT (XBUFFER (w->contents)))
: Fmarker_position (w->pointm)),
w->contents);
if (!NILP (Fbuffer_local_value (Qauto_hscroll_mode, w->contents))
&& !w->suspend_auto_hscroll
/* In some pathological cases, like restoring a window
configuration into a frame that is much smaller than
the one from which the configuration was saved, we
get glyph rows whose start and end have zero buffer
positions, which we cannot handle below. Just skip
such windows. */
&& CHARPOS (cursor_row->start.pos) >= BUF_BEG (w->contents)
/* For left-to-right rows, hscroll when cursor is either
(i) inside the right hscroll margin, or (ii) if it is
inside the left margin and the window is already
hscrolled. */
&& ((!row_r2l_p
&& ((w->hscroll && w->cursor.x <= h_margin)
|| (cursor_row->enabled_p
&& cursor_row->truncated_on_right_p
&& (w->cursor.x >= text_area_width - h_margin))))
/* For right-to-left rows, the logic is similar,
except that rules for scrolling to left and right
are reversed. E.g., if cursor.x <= h_margin, we
need to hscroll "to the right" unconditionally,
and that will scroll the screen to the left so as
to reveal the next portion of the row. */
|| (row_r2l_p
&& ((cursor_row->enabled_p
/* FIXME: It is confusing to set the
truncated_on_right_p flag when R2L rows
are actually truncated on the left. */
&& cursor_row->truncated_on_right_p
&& w->cursor.x <= h_margin)
|| (w->hscroll
&& (w->cursor.x >= text_area_width - h_margin))))))
{
struct it it;
ptrdiff_t hscroll;
struct buffer *saved_current_buffer;
ptrdiff_t pt;
int wanted_x;
/* Find point in a display of infinite width. */
saved_current_buffer = current_buffer;
current_buffer = XBUFFER (w->contents);
if (w == XWINDOW (selected_window))
pt = PT;
else
pt = clip_to_bounds (BEGV, marker_position (w->pointm), ZV);
/* Move iterator to pt starting at cursor_row->start in
a line with infinite width. */
init_to_row_start (&it, w, cursor_row);
it.last_visible_x = INFINITY;
move_it_in_display_line_to (&it, pt, -1, MOVE_TO_POS);
/* If the line ends in an overlay string with a newline,
we might infloop, because displaying the window will
want to put the cursor after the overlay, i.e. at X
coordinate of zero on the next screen line. So we
use the buffer position prior to the overlay string
instead. */
if (it.method == GET_FROM_STRING && pt > 1)
{
init_to_row_start (&it, w, cursor_row);
move_it_in_display_line_to (&it, pt - 1, -1, MOVE_TO_POS);
}
current_buffer = saved_current_buffer;
/* Position cursor in window. */
if (!hscroll_relative_p && hscroll_step_abs == 0)
hscroll = max (0, (it.current_x
- (ITERATOR_AT_END_OF_LINE_P (&it)
? (text_area_width - 4 * FRAME_COLUMN_WIDTH (it.f))
: (text_area_width / 2))))
/ FRAME_COLUMN_WIDTH (it.f);
else if ((!row_r2l_p
&& w->cursor.x >= text_area_width - h_margin)
|| (row_r2l_p && w->cursor.x <= h_margin))
{
if (hscroll_relative_p)
wanted_x = text_area_width * (1 - hscroll_step_rel)
- h_margin;
else
wanted_x = text_area_width
- hscroll_step_abs * FRAME_COLUMN_WIDTH (it.f)
- h_margin;
hscroll
= max (0, it.current_x - wanted_x) / FRAME_COLUMN_WIDTH (it.f);
}
else
{
if (hscroll_relative_p)
wanted_x = text_area_width * hscroll_step_rel
+ h_margin;
else
wanted_x = hscroll_step_abs * FRAME_COLUMN_WIDTH (it.f)
+ h_margin;
hscroll
= max (0, it.current_x - wanted_x) / FRAME_COLUMN_WIDTH (it.f);
}
hscroll = max (hscroll, w->min_hscroll);
/* Don't prevent redisplay optimizations if hscroll
hasn't changed, as it will unnecessarily slow down
redisplay. */
if (w->hscroll != hscroll)
{
struct buffer *b = XBUFFER (w->contents);
b->prevent_redisplay_optimizations_p = true;
w->hscroll = hscroll;
hscrolled_p = true;
}
}
}
window = w->next;
}
/* Value is true if hscroll of any leaf window has been changed. */
return hscrolled_p;
}
/* Set hscroll so that cursor is visible and not inside horizontal
scroll margins for all windows in the tree rooted at WINDOW. See
also hscroll_window_tree above. Value is true if any window's
hscroll has been changed. If it has, desired matrices on the frame
of WINDOW are cleared. */
static bool
hscroll_windows (Lisp_Object window)
{
bool hscrolled_p = hscroll_window_tree (window);
if (hscrolled_p)
clear_desired_matrices (XFRAME (WINDOW_FRAME (XWINDOW (window))));
return hscrolled_p;
}
\f
/************************************************************************
Redisplay
************************************************************************/
/* Variables holding some state of redisplay if GLYPH_DEBUG is defined.
This is sometimes handy to have in a debugger session. */
#ifdef GLYPH_DEBUG
/* First and last unchanged row for try_window_id. */
static int debug_first_unchanged_at_end_vpos;
static int debug_last_unchanged_at_beg_vpos;
/* Delta vpos and y. */
static int debug_dvpos, debug_dy;
/* Delta in characters and bytes for try_window_id. */
static ptrdiff_t debug_delta, debug_delta_bytes;
/* Values of window_end_pos and window_end_vpos at the end of
try_window_id. */
static ptrdiff_t debug_end_vpos;
/* Append a string to W->desired_matrix->method. FMT is a printf
format string. If trace_redisplay_p is true also printf the
resulting string to stderr. */
static void debug_method_add (struct window *, char const *, ...)
ATTRIBUTE_FORMAT_PRINTF (2, 3);
static void
debug_method_add (struct window *w, char const *fmt, ...)
{
void *ptr = w;
char *method = w->desired_matrix->method;
int len = strlen (method);
int size = sizeof w->desired_matrix->method;
int remaining = size - len - 1;
va_list ap;
if (len && remaining)
{
method[len] = '|';
--remaining, ++len;
}
va_start (ap, fmt);
vsnprintf (method + len, remaining + 1, fmt, ap);
va_end (ap);
if (trace_redisplay_p)
fprintf (stderr, "%p (%s): %s\n",
ptr,
((BUFFERP (w->contents)
&& STRINGP (BVAR (XBUFFER (w->contents), name)))
? SSDATA (BVAR (XBUFFER (w->contents), name))
: "no buffer"),
method + len);
}
#endif /* GLYPH_DEBUG */
/* Value is true if all changes in window W, which displays
current_buffer, are in the text between START and END. START is a
buffer position, END is given as a distance from Z. Used in
redisplay_internal for display optimization. */
static bool
text_outside_line_unchanged_p (struct window *w,
ptrdiff_t start, ptrdiff_t end)
{
bool unchanged_p = true;
/* If text or overlays have changed, see where. */
if (window_outdated (w))
{
/* Gap in the line? */
if (GPT < start || Z - GPT < end)
unchanged_p = false;
/* Changes start in front of the line, or end after it? */
if (unchanged_p
&& (BEG_UNCHANGED < start - 1
|| END_UNCHANGED < end))
unchanged_p = false;
/* If selective display, can't optimize if changes start at the
beginning of the line. */
if (unchanged_p
&& INTEGERP (BVAR (current_buffer, selective_display))
&& XINT (BVAR (current_buffer, selective_display)) > 0
&& (BEG_UNCHANGED < start || GPT <= start))
unchanged_p = false;
/* If there are overlays at the start or end of the line, these
may have overlay strings with newlines in them. A change at
START, for instance, may actually concern the display of such
overlay strings as well, and they are displayed on different
lines. So, quickly rule out this case. (For the future, it
might be desirable to implement something more telling than
just BEG/END_UNCHANGED.) */
if (unchanged_p)
{
if (BEG + BEG_UNCHANGED == start
&& overlay_touches_p (start))
unchanged_p = false;
if (END_UNCHANGED == end
&& overlay_touches_p (Z - end))
unchanged_p = false;
}
/* Under bidi reordering, adding or deleting a character in the
beginning of a paragraph, before the first strong directional
character, can change the base direction of the paragraph (unless
the buffer specifies a fixed paragraph direction), which will
require redisplaying the whole paragraph. It might be worthwhile
to find the paragraph limits and widen the range of redisplayed
lines to that, but for now just give up this optimization. */
if (!NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering))
&& NILP (BVAR (XBUFFER (w->contents), bidi_paragraph_direction)))
unchanged_p = false;
}
return unchanged_p;
}
/* Do a frame update, taking possible shortcuts into account. This is
the main external entry point for redisplay.
If the last redisplay displayed an echo area message and that message
is no longer requested, we clear the echo area or bring back the
mini-buffer if that is in use. */
void
redisplay (void)
{
redisplay_internal ();
}
static Lisp_Object
overlay_arrow_string_or_property (Lisp_Object var)
{
Lisp_Object val;
if (val = Fget (var, Qoverlay_arrow_string), STRINGP (val))
return val;
return Voverlay_arrow_string;
}
/* Return true if there are any overlay-arrows in current_buffer. */
static bool
overlay_arrow_in_current_buffer_p (void)
{
Lisp_Object vlist;
for (vlist = Voverlay_arrow_variable_list;
CONSP (vlist);
vlist = XCDR (vlist))
{
Lisp_Object var = XCAR (vlist);
Lisp_Object val;
if (!SYMBOLP (var))
continue;
val = find_symbol_value (var);
if (MARKERP (val)
&& current_buffer == XMARKER (val)->buffer)
return true;
}
return false;
}
/* Return true if any overlay_arrows have moved or overlay-arrow-string
has changed. */
static bool
overlay_arrows_changed_p (void)
{
Lisp_Object vlist;
for (vlist = Voverlay_arrow_variable_list;
CONSP (vlist);
vlist = XCDR (vlist))
{
Lisp_Object var = XCAR (vlist);
Lisp_Object val, pstr;
if (!SYMBOLP (var))
continue;
val = find_symbol_value (var);
if (!MARKERP (val))
continue;
if (! EQ (COERCE_MARKER (val),
Fget (var, Qlast_arrow_position))
|| ! (pstr = overlay_arrow_string_or_property (var),
EQ (pstr, Fget (var, Qlast_arrow_string))))
return true;
}
return false;
}
/* Mark overlay arrows to be updated on next redisplay. */
static void
update_overlay_arrows (int up_to_date)
{
Lisp_Object vlist;
for (vlist = Voverlay_arrow_variable_list;
CONSP (vlist);
vlist = XCDR (vlist))
{
Lisp_Object var = XCAR (vlist);
if (!SYMBOLP (var))
continue;
if (up_to_date > 0)
{
Lisp_Object val = find_symbol_value (var);
Fput (var, Qlast_arrow_position,
COERCE_MARKER (val));
Fput (var, Qlast_arrow_string,
overlay_arrow_string_or_property (var));
}
else if (up_to_date < 0
|| !NILP (Fget (var, Qlast_arrow_position)))
{
Fput (var, Qlast_arrow_position, Qt);
Fput (var, Qlast_arrow_string, Qt);
}
}
}
/* Return overlay arrow string to display at row.
Return integer (bitmap number) for arrow bitmap in left fringe.
Return nil if no overlay arrow. */
static Lisp_Object
overlay_arrow_at_row (struct it *it, struct glyph_row *row)
{
Lisp_Object vlist;
for (vlist = Voverlay_arrow_variable_list;
CONSP (vlist);
vlist = XCDR (vlist))
{
Lisp_Object var = XCAR (vlist);
Lisp_Object val;
if (!SYMBOLP (var))
continue;
val = find_symbol_value (var);
if (MARKERP (val)
&& current_buffer == XMARKER (val)->buffer
&& (MATRIX_ROW_START_CHARPOS (row) == marker_position (val)))
{
if (FRAME_WINDOW_P (it->f)
/* FIXME: if ROW->reversed_p is set, this should test
the right fringe, not the left one. */
&& WINDOW_LEFT_FRINGE_WIDTH (it->w) > 0)
{
#ifdef HAVE_WINDOW_SYSTEM
if (val = Fget (var, Qoverlay_arrow_bitmap), SYMBOLP (val))
{
int fringe_bitmap = lookup_fringe_bitmap (val);
if (fringe_bitmap != 0)
return make_number (fringe_bitmap);
}
#endif
return make_number (-1); /* Use default arrow bitmap. */
}
return overlay_arrow_string_or_property (var);
}
}
return Qnil;
}
/* Return true if point moved out of or into a composition. Otherwise
return false. PREV_BUF and PREV_PT are the last point buffer and
position. BUF and PT are the current point buffer and position. */
static bool
check_point_in_composition (struct buffer *prev_buf, ptrdiff_t prev_pt,
struct buffer *buf, ptrdiff_t pt)
{
ptrdiff_t start, end;
Lisp_Object prop;
Lisp_Object buffer;
XSETBUFFER (buffer, buf);
/* Check a composition at the last point if point moved within the
same buffer. */
if (prev_buf == buf)
{
if (prev_pt == pt)
/* Point didn't move. */
return false;
if (prev_pt > BUF_BEGV (buf) && prev_pt < BUF_ZV (buf)
&& find_composition (prev_pt, -1, &start, &end, &prop, buffer)
&& composition_valid_p (start, end, prop)
&& start < prev_pt && end > prev_pt)
/* The last point was within the composition. Return true iff
point moved out of the composition. */
return (pt <= start || pt >= end);
}
/* Check a composition at the current point. */
return (pt > BUF_BEGV (buf) && pt < BUF_ZV (buf)
&& find_composition (pt, -1, &start, &end, &prop, buffer)
&& composition_valid_p (start, end, prop)
&& start < pt && end > pt);
}
/* Reconsider the clip changes of buffer which is displayed in W. */
static void
reconsider_clip_changes (struct window *w)
{
struct buffer *b = XBUFFER (w->contents);
if (b->clip_changed
&& w->window_end_valid
&& w->current_matrix->buffer == b
&& w->current_matrix->zv == BUF_ZV (b)
&& w->current_matrix->begv == BUF_BEGV (b))
b->clip_changed = false;
/* If display wasn't paused, and W is not a tool bar window, see if
point has been moved into or out of a composition. In that case,
set b->clip_changed to force updating the screen. If
b->clip_changed has already been set, skip this check. */
if (!b->clip_changed && w->window_end_valid)
{
ptrdiff_t pt = (w == XWINDOW (selected_window)
? PT : marker_position (w->pointm));
if ((w->current_matrix->buffer != b || pt != w->last_point)
&& check_point_in_composition (w->current_matrix->buffer,
w->last_point, b, pt))
b->clip_changed = true;
}
}
static void
propagate_buffer_redisplay (void)
{ /* Resetting b->text->redisplay is problematic!
We can't just reset it in the case that some window that displays
it has not been redisplayed; and such a window can stay
unredisplayed for a long time if it's currently invisible.
But we do want to reset it at the end of redisplay otherwise
its displayed windows will keep being redisplayed over and over
again.
So we copy all b->text->redisplay flags up to their windows here,
such that mark_window_display_accurate can safely reset
b->text->redisplay. */
Lisp_Object ws = window_list ();
for (; CONSP (ws); ws = XCDR (ws))
{
struct window *thisw = XWINDOW (XCAR (ws));
struct buffer *thisb = XBUFFER (thisw->contents);
if (thisb->text->redisplay)
thisw->redisplay = true;
}
}
#define STOP_POLLING \
do { if (! polling_stopped_here) stop_polling (); \
polling_stopped_here = true; } while (false)
#define RESUME_POLLING \
do { if (polling_stopped_here) start_polling (); \
polling_stopped_here = false; } while (false)
/* Perhaps in the future avoid recentering windows if it
is not necessary; currently that causes some problems. */
static void
redisplay_internal (void)
{
struct window *w = XWINDOW (selected_window);
struct window *sw;
struct frame *fr;
bool pending;
bool must_finish = false, match_p;
struct text_pos tlbufpos, tlendpos;
int number_of_visible_frames;
ptrdiff_t count;
struct frame *sf;
bool polling_stopped_here = false;
Lisp_Object tail, frame;
/* Set a limit to the number of retries we perform due to horizontal
scrolling, this avoids getting stuck in an uninterruptible
infinite loop (Bug #24633). */
enum { MAX_HSCROLL_RETRIES = 16 };
int hscroll_retries = 0;
/* True means redisplay has to consider all windows on all
frames. False, only selected_window is considered. */
bool consider_all_windows_p;
/* True means redisplay has to redisplay the miniwindow. */
bool update_miniwindow_p = false;
TRACE ((stderr, "redisplay_internal %d\n", redisplaying_p));
/* No redisplay if running in batch mode or frame is not yet fully
initialized, or redisplay is explicitly turned off by setting
Vinhibit_redisplay. */
if (FRAME_INITIAL_P (SELECTED_FRAME ())
|| !NILP (Vinhibit_redisplay))
return;
/* Don't examine these until after testing Vinhibit_redisplay.
When Emacs is shutting down, perhaps because its connection to
X has dropped, we should not look at them at all. */
fr = XFRAME (w->frame);
sf = SELECTED_FRAME ();
if (!fr->glyphs_initialized_p)
return;
#if defined (USE_X_TOOLKIT) || defined (USE_GTK) || defined (HAVE_NS)
if (popup_activated ())
return;
#endif
/* I don't think this happens but let's be paranoid. */
if (redisplaying_p)
return;
/* Record a function that clears redisplaying_p
when we leave this function. */
count = SPECPDL_INDEX ();
record_unwind_protect_void (unwind_redisplay);
redisplaying_p = true;
block_buffer_flips ();
specbind (Qinhibit_free_realized_faces, Qnil);
/* Record this function, so it appears on the profiler's backtraces. */
record_in_backtrace (Qredisplay_internal_xC_functionx, 0, 0);
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->already_hscrolled_p = false;
retry:
/* Remember the currently selected window. */
sw = w;
pending = false;
forget_escape_and_glyphless_faces ();
inhibit_free_realized_faces = false;
/* If face_change, init_iterator will free all realized faces, which
includes the faces referenced from current matrices. So, we
can't reuse current matrices in this case. */
if (face_change)
windows_or_buffers_changed = 47;
if ((FRAME_TERMCAP_P (sf) || FRAME_MSDOS_P (sf))
&& FRAME_TTY (sf)->previous_frame != sf)
{
/* Since frames on a single ASCII terminal share the same
display area, displaying a different frame means redisplay
the whole thing. */
SET_FRAME_GARBAGED (sf);
#ifndef DOS_NT
set_tty_color_mode (FRAME_TTY (sf), sf);
#endif
FRAME_TTY (sf)->previous_frame = sf;
}
/* Set the visible flags for all frames. Do this before checking for
resized or garbaged frames; they want to know if their frames are
visible. See the comment in frame.h for FRAME_SAMPLE_VISIBILITY. */
number_of_visible_frames = 0;
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (FRAME_VISIBLE_P (f))
{
++number_of_visible_frames;
/* Adjust matrices for visible frames only. */
if (f->fonts_changed)
{
adjust_frame_glyphs (f);
/* Disable all redisplay optimizations for this frame.
This is because adjust_frame_glyphs resets the
enabled_p flag for all glyph rows of all windows, so
many optimizations will fail anyway, and some might
fail to test that flag and do bogus things as
result. */
SET_FRAME_GARBAGED (f);
f->fonts_changed = false;
}
/* If cursor type has been changed on the frame
other than selected, consider all frames. */
if (f != sf && f->cursor_type_changed)
fset_redisplay (f);
}
clear_desired_matrices (f);
}
/* Notice any pending interrupt request to change frame size. */
do_pending_window_change (true);
/* do_pending_window_change could change the selected_window due to
frame resizing which makes the selected window too small. */
if (WINDOWP (selected_window) && (w = XWINDOW (selected_window)) != sw)
sw = w;
/* Clear frames marked as garbaged. */
clear_garbaged_frames ();
/* Build menubar and tool-bar items. */
if (NILP (Vmemory_full))
prepare_menu_bars ();
reconsider_clip_changes (w);
/* In most cases selected window displays current buffer. */
match_p = XBUFFER (w->contents) == current_buffer;
if (match_p)
{
/* Detect case that we need to write or remove a star in the mode line. */
if ((SAVE_MODIFF < MODIFF) != w->last_had_star)
w->update_mode_line = true;
if (mode_line_update_needed (w))
w->update_mode_line = true;
/* If reconsider_clip_changes above decided that the narrowing
in the current buffer changed, make sure all other windows
showing that buffer will be redisplayed. */
if (current_buffer->clip_changed)
bset_update_mode_line (current_buffer);
}
/* Normally the message* functions will have already displayed and
updated the echo area, but the frame may have been trashed, or
the update may have been preempted, so display the echo area
again here. Checking message_cleared_p captures the case that
the echo area should be cleared. */
if ((!NILP (echo_area_buffer[0]) && !display_last_displayed_message_p)
|| (!NILP (echo_area_buffer[1]) && display_last_displayed_message_p)
|| (message_cleared_p
&& minibuf_level == 0
/* If the mini-window is currently selected, this means the
echo-area doesn't show through. */
&& !MINI_WINDOW_P (XWINDOW (selected_window))))
{
echo_area_display (false);
/* If echo_area_display resizes the mini-window, the redisplay and
window_sizes_changed flags of the selected frame are set, but
it's too late for the hooks in window-size-change-functions,
which have been examined already in prepare_menu_bars. So in
that case we call the hooks here only for the selected frame. */
if (sf->redisplay)
{
ptrdiff_t count1 = SPECPDL_INDEX ();
record_unwind_save_match_data ();
run_window_size_change_functions (selected_frame);
unbind_to (count1, Qnil);
}
if (message_cleared_p)
update_miniwindow_p = true;
must_finish = true;
/* If we don't display the current message, don't clear the
message_cleared_p flag, because, if we did, we wouldn't clear
the echo area in the next redisplay which doesn't preserve
the echo area. */
if (!display_last_displayed_message_p)
message_cleared_p = false;
}
else if (EQ (selected_window, minibuf_window)
&& (current_buffer->clip_changed || window_outdated (w))
&& resize_mini_window (w, false))
{
if (sf->redisplay)
{
ptrdiff_t count1 = SPECPDL_INDEX ();
record_unwind_save_match_data ();
run_window_size_change_functions (selected_frame);
unbind_to (count1, Qnil);
}
/* Resized active mini-window to fit the size of what it is
showing if its contents might have changed. */
must_finish = true;
/* If window configuration was changed, frames may have been
marked garbaged. Clear them or we will experience
surprises wrt scrolling. */
clear_garbaged_frames ();
}
if (windows_or_buffers_changed && !update_mode_lines)
/* Code that sets windows_or_buffers_changed doesn't distinguish whether
only the windows's contents needs to be refreshed, or whether the
mode-lines also need a refresh. */
update_mode_lines = (windows_or_buffers_changed == REDISPLAY_SOME
? REDISPLAY_SOME : 32);
/* If specs for an arrow have changed, do thorough redisplay
to ensure we remove any arrow that should no longer exist. */
if (overlay_arrows_changed_p ())
/* Apparently, this is the only case where we update other windows,
without updating other mode-lines. */
windows_or_buffers_changed = 49;
consider_all_windows_p = (update_mode_lines
|| windows_or_buffers_changed);
#define AINC(a,i) \
{ \
Lisp_Object entry = Fgethash (make_number (i), a, make_number (0)); \
if (INTEGERP (entry)) \
Fputhash (make_number (i), make_number (1 + XINT (entry)), a); \
}
AINC (Vredisplay__all_windows_cause, windows_or_buffers_changed);
AINC (Vredisplay__mode_lines_cause, update_mode_lines);
/* Optimize the case that only the line containing the cursor in the
selected window has changed. Variables starting with this_ are
set in display_line and record information about the line
containing the cursor. */
tlbufpos = this_line_start_pos;
tlendpos = this_line_end_pos;
if (!consider_all_windows_p
&& CHARPOS (tlbufpos) > 0
&& !w->update_mode_line
&& !current_buffer->clip_changed
&& !current_buffer->prevent_redisplay_optimizations_p
&& FRAME_VISIBLE_P (XFRAME (w->frame))
&& !FRAME_OBSCURED_P (XFRAME (w->frame))
&& !XFRAME (w->frame)->cursor_type_changed
&& !XFRAME (w->frame)->face_change
/* Make sure recorded data applies to current buffer, etc. */
&& this_line_buffer == current_buffer
&& match_p
&& !w->force_start
&& !w->optional_new_start
/* Point must be on the line that we have info recorded about. */
&& PT >= CHARPOS (tlbufpos)
&& PT <= Z - CHARPOS (tlendpos)
/* All text outside that line, including its final newline,
must be unchanged. */
&& text_outside_line_unchanged_p (w, CHARPOS (tlbufpos),
CHARPOS (tlendpos)))
{
if (CHARPOS (tlbufpos) > BEGV
&& FETCH_BYTE (BYTEPOS (tlbufpos) - 1) != '\n'
&& (CHARPOS (tlbufpos) == ZV
|| FETCH_BYTE (BYTEPOS (tlbufpos)) == '\n'))
/* Former continuation line has disappeared by becoming empty. */
goto cancel;
else if (window_outdated (w) || MINI_WINDOW_P (w))
{
/* We have to handle the case of continuation around a
wide-column character (see the comment in indent.c around
line 1340).
For instance, in the following case:
-------- Insert --------
K_A_N_\\ `a' K_A_N_a\ `X_' are wide-column chars.
J_I_ ==> J_I_ `^^' are cursors.
^^ ^^
-------- --------
As we have to redraw the line above, we cannot use this
optimization. */
struct it it;
int line_height_before = this_line_pixel_height;
/* Note that start_display will handle the case that the
line starting at tlbufpos is a continuation line. */
start_display (&it, w, tlbufpos);
/* Implementation note: It this still necessary? */
if (it.current_x != this_line_start_x)
goto cancel;
TRACE ((stderr, "trying display optimization 1\n"));
w->cursor.vpos = -1;
overlay_arrow_seen = false;
it.vpos = this_line_vpos;
it.current_y = this_line_y;
it.glyph_row = MATRIX_ROW (w->desired_matrix, this_line_vpos);
display_line (&it);
/* If line contains point, is not continued,
and ends at same distance from eob as before, we win. */
if (w->cursor.vpos >= 0
/* Line is not continued, otherwise this_line_start_pos
would have been set to 0 in display_line. */
&& CHARPOS (this_line_start_pos)
/* Line ends as before. */
&& CHARPOS (this_line_end_pos) == CHARPOS (tlendpos)
/* Line has same height as before. Otherwise other lines
would have to be shifted up or down. */
&& this_line_pixel_height == line_height_before)
{
/* If this is not the window's last line, we must adjust
the charstarts of the lines below. */
if (it.current_y < it.last_visible_y)
{
struct glyph_row *row
= MATRIX_ROW (w->current_matrix, this_line_vpos + 1);
ptrdiff_t delta, delta_bytes;
/* We used to distinguish between two cases here,
conditioned by Z - CHARPOS (tlendpos) == ZV, for
when the line ends in a newline or the end of the
buffer's accessible portion. But both cases did
the same, so they were collapsed. */
delta = (Z
- CHARPOS (tlendpos)
- MATRIX_ROW_START_CHARPOS (row));
delta_bytes = (Z_BYTE
- BYTEPOS (tlendpos)
- MATRIX_ROW_START_BYTEPOS (row));
increment_matrix_positions (w->current_matrix,
this_line_vpos + 1,
w->current_matrix->nrows,
delta, delta_bytes);
}
/* If this row displays text now but previously didn't,
or vice versa, w->window_end_vpos may have to be
adjusted. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (it.glyph_row - 1))
{
if (w->window_end_vpos < this_line_vpos)
w->window_end_vpos = this_line_vpos;
}
else if (w->window_end_vpos == this_line_vpos
&& this_line_vpos > 0)
w->window_end_vpos = this_line_vpos - 1;
w->window_end_valid = false;
/* Update hint: No need to try to scroll in update_window. */
w->desired_matrix->no_scrolling_p = true;
#ifdef GLYPH_DEBUG
*w->desired_matrix->method = 0;
debug_method_add (w, "optimization 1");
#endif
#ifdef HAVE_WINDOW_SYSTEM
update_window_fringes (w, false);
#endif
goto update;
}
else
goto cancel;
}
else if (/* Cursor position hasn't changed. */
PT == w->last_point
/* Make sure the cursor was last displayed
in this window. Otherwise we have to reposition it. */
/* PXW: Must be converted to pixels, probably. */
&& 0 <= w->cursor.vpos
&& w->cursor.vpos < WINDOW_TOTAL_LINES (w))
{
if (!must_finish)
{
do_pending_window_change (true);
/* If selected_window changed, redisplay again. */
if (WINDOWP (selected_window)
&& (w = XWINDOW (selected_window)) != sw)
goto retry;
/* We used to always goto end_of_redisplay here, but this
isn't enough if we have a blinking cursor. */
if (w->cursor_off_p == w->last_cursor_off_p)
goto end_of_redisplay;
}
goto update;
}
/* If highlighting the region, or if the cursor is in the echo area,
then we can't just move the cursor. */
else if (NILP (Vshow_trailing_whitespace)
&& !cursor_in_echo_area)
{
struct it it;
struct glyph_row *row;
/* Skip from tlbufpos to PT and see where it is. Note that
PT may be in invisible text. If so, we will end at the
next visible position. */
init_iterator (&it, w, CHARPOS (tlbufpos), BYTEPOS (tlbufpos),
NULL, DEFAULT_FACE_ID);
it.current_x = this_line_start_x;
it.current_y = this_line_y;
it.vpos = this_line_vpos;
/* The call to move_it_to stops in front of PT, but
moves over before-strings. */
move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
if (it.vpos == this_line_vpos
&& (row = MATRIX_ROW (w->current_matrix, this_line_vpos),
row->enabled_p))
{
eassert (this_line_vpos == it.vpos);
eassert (this_line_y == it.current_y);
set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
if (cursor_row_fully_visible_p (w, false, true))
{
#ifdef GLYPH_DEBUG
*w->desired_matrix->method = 0;
debug_method_add (w, "optimization 3");
#endif
goto update;
}
else
goto cancel;
}
else
goto cancel;
}
cancel:
/* Text changed drastically or point moved off of line. */
SET_MATRIX_ROW_ENABLED_P (w->desired_matrix, this_line_vpos, false);
}
CHARPOS (this_line_start_pos) = 0;
++clear_face_cache_count;
#ifdef HAVE_WINDOW_SYSTEM
++clear_image_cache_count;
#endif
/* Build desired matrices, and update the display. If
consider_all_windows_p, do it for all windows on all frames that
require redisplay, as specified by their 'redisplay' flag.
Otherwise do it for selected_window, only. */
if (consider_all_windows_p)
{
FOR_EACH_FRAME (tail, frame)
XFRAME (frame)->updated_p = false;
propagate_buffer_redisplay ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
/* We don't have to do anything for unselected terminal
frames. */
if ((FRAME_TERMCAP_P (f) || FRAME_MSDOS_P (f))
&& !EQ (FRAME_TTY (f)->top_frame, frame))
continue;
retry_frame:
if (FRAME_WINDOW_P (f) || FRAME_TERMCAP_P (f) || f == sf)
{
bool gcscrollbars
/* Only GC scrollbars when we redisplay the whole frame. */
= f->redisplay || !REDISPLAY_SOME_P ();
bool f_redisplay_flag = f->redisplay;
/* Mark all the scroll bars to be removed; we'll redeem
the ones we want when we redisplay their windows. */
if (gcscrollbars && FRAME_TERMINAL (f)->condemn_scroll_bars_hook)
FRAME_TERMINAL (f)->condemn_scroll_bars_hook (f);
if (FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f))
redisplay_windows (FRAME_ROOT_WINDOW (f));
/* Remember that the invisible frames need to be redisplayed next
time they're visible. */
else if (!REDISPLAY_SOME_P ())
f->redisplay = true;
/* The X error handler may have deleted that frame. */
if (!FRAME_LIVE_P (f))
continue;
/* Any scroll bars which redisplay_windows should have
nuked should now go away. */
if (gcscrollbars && FRAME_TERMINAL (f)->judge_scroll_bars_hook)
FRAME_TERMINAL (f)->judge_scroll_bars_hook (f);
if (FRAME_VISIBLE_P (f) && !FRAME_OBSCURED_P (f))
{
/* If fonts changed on visible frame, display again. */
if (f->fonts_changed)
{
adjust_frame_glyphs (f);
/* Disable all redisplay optimizations for this
frame. For the reasons, see the comment near
the previous call to adjust_frame_glyphs above. */
SET_FRAME_GARBAGED (f);
f->fonts_changed = false;
goto retry_frame;
}
/* See if we have to hscroll. */
if (!f->already_hscrolled_p)
{
f->already_hscrolled_p = true;
if (hscroll_retries <= MAX_HSCROLL_RETRIES
&& hscroll_windows (f->root_window))
{
hscroll_retries++;
goto retry_frame;
}
}
/* If the frame's redisplay flag was not set before
we went about redisplaying its windows, but it is
set now, that means we employed some redisplay
optimizations inside redisplay_windows, and
bypassed producing some screen lines. But if
f->redisplay is now set, it might mean the old
faces are no longer valid (e.g., if redisplaying
some window called some Lisp which defined a new
face or redefined an existing face), so trying to
use them in update_frame will segfault.
Therefore, we must redisplay this frame. */
if (!f_redisplay_flag && f->redisplay)
goto retry_frame;
/* In some case (e.g., window resize), we notice
only during window updating that the window
content changed unpredictably (e.g., a GTK
scrollbar moved) and that our previous estimation
of the frame content was garbage. We have to
start over. These cases should be rare, so going
all the way back to the top of redisplay should
be good enough.
Why FRAME_WINDOW_P? See
https://lists.gnu.org/archive/html/emacs-devel/2016-10/msg00957.html
*/
if (FRAME_GARBAGED_P (f) && FRAME_WINDOW_P (f))
goto retry;
/* Prevent various kinds of signals during display
update. stdio is not robust about handling
signals, which can cause an apparent I/O error. */
if (interrupt_input)
unrequest_sigio ();
STOP_POLLING;
pending |= update_frame (f, false, false);
f->cursor_type_changed = false;
f->updated_p = true;
}
}
}
eassert (EQ (XFRAME (selected_frame)->selected_window, selected_window));
if (!pending)
{
/* Do the mark_window_display_accurate after all windows have
been redisplayed because this call resets flags in buffers
which are needed for proper redisplay. */
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (f->updated_p)
{
f->redisplay = false;
f->garbaged = false;
mark_window_display_accurate (f->root_window, true);
if (FRAME_TERMINAL (f)->frame_up_to_date_hook)
FRAME_TERMINAL (f)->frame_up_to_date_hook (f);
}
}
}
}
else if (FRAME_VISIBLE_P (sf) && !FRAME_OBSCURED_P (sf))
{
displayed_buffer = XBUFFER (XWINDOW (selected_window)->contents);
/* Use list_of_error, not Qerror, so that
we catch only errors and don't run the debugger. */
internal_condition_case_1 (redisplay_window_1, selected_window,
list_of_error,
redisplay_window_error);
if (update_miniwindow_p)
internal_condition_case_1 (redisplay_window_1,
FRAME_MINIBUF_WINDOW (sf), list_of_error,
redisplay_window_error);
/* Compare desired and current matrices, perform output. */
update:
/* If fonts changed, display again. Likewise if redisplay_window_1
above caused some change (e.g., a change in faces) that requires
considering the entire frame again. */
if (sf->fonts_changed || sf->redisplay)
{
if (sf->redisplay)
{
/* Set this to force a more thorough redisplay.
Otherwise, we might immediately loop back to the
above "else-if" clause (since all the conditions that
led here might still be true), and we will then
infloop, because the selected-frame's redisplay flag
is not (and cannot be) reset. */
windows_or_buffers_changed = 50;
}
goto retry;
}
/* Prevent freeing of realized faces, since desired matrices are
pending that reference the faces we computed and cached. */
inhibit_free_realized_faces = true;
/* Prevent various kinds of signals during display update.
stdio is not robust about handling signals,
which can cause an apparent I/O error. */
if (interrupt_input)
unrequest_sigio ();
STOP_POLLING;
if (FRAME_VISIBLE_P (sf) && !FRAME_OBSCURED_P (sf))
{
if (hscroll_retries <= MAX_HSCROLL_RETRIES
&& hscroll_windows (selected_window))
{
hscroll_retries++;
goto retry;
}
XWINDOW (selected_window)->must_be_updated_p = true;
pending = update_frame (sf, false, false);
sf->cursor_type_changed = false;
}
/* We may have called echo_area_display at the top of this
function. If the echo area is on another frame, that may
have put text on a frame other than the selected one, so the
above call to update_frame would not have caught it. Catch
it here. */
Lisp_Object mini_window = FRAME_MINIBUF_WINDOW (sf);
struct frame *mini_frame = XFRAME (WINDOW_FRAME (XWINDOW (mini_window)));
if (mini_frame != sf && FRAME_WINDOW_P (mini_frame))
{
XWINDOW (mini_window)->must_be_updated_p = true;
pending |= update_frame (mini_frame, false, false);
mini_frame->cursor_type_changed = false;
if (!pending && hscroll_retries <= MAX_HSCROLL_RETRIES
&& hscroll_windows (mini_window))
{
hscroll_retries++;
goto retry;
}
}
}
/* If display was paused because of pending input, make sure we do a
thorough update the next time. */
if (pending)
{
/* Prevent the optimization at the beginning of
redisplay_internal that tries a single-line update of the
line containing the cursor in the selected window. */
CHARPOS (this_line_start_pos) = 0;
/* Let the overlay arrow be updated the next time. */
update_overlay_arrows (0);
/* If we pause after scrolling, some rows in the current
matrices of some windows are not valid. */
if (!WINDOW_FULL_WIDTH_P (w)
&& !FRAME_WINDOW_P (XFRAME (w->frame)))
update_mode_lines = 36;
}
else
{
if (!consider_all_windows_p)
{
/* This has already been done above if
consider_all_windows_p is set. */
if (XBUFFER (w->contents)->text->redisplay
&& buffer_window_count (XBUFFER (w->contents)) > 1)
/* This can happen if b->text->redisplay was set during
jit-lock. */
propagate_buffer_redisplay ();
mark_window_display_accurate_1 (w, true);
/* Say overlay arrows are up to date. */
update_overlay_arrows (1);
if (FRAME_TERMINAL (sf)->frame_up_to_date_hook != 0)
FRAME_TERMINAL (sf)->frame_up_to_date_hook (sf);
}
update_mode_lines = 0;
windows_or_buffers_changed = 0;
}
/* Start SIGIO interrupts coming again. Having them off during the
code above makes it less likely one will discard output, but not
impossible, since there might be stuff in the system buffer here.
But it is much hairier to try to do anything about that. */
if (interrupt_input)
request_sigio ();
RESUME_POLLING;
/* If a frame has become visible which was not before, redisplay
again, so that we display it. Expose events for such a frame
(which it gets when becoming visible) don't call the parts of
redisplay constructing glyphs, so simply exposing a frame won't
display anything in this case. So, we have to display these
frames here explicitly. */
if (!pending)
{
int new_count = 0;
FOR_EACH_FRAME (tail, frame)
{
if (XFRAME (frame)->visible)
new_count++;
}
if (new_count != number_of_visible_frames)
windows_or_buffers_changed = 52;
}
/* Change frame size now if a change is pending. */
do_pending_window_change (true);
/* If we just did a pending size change, or have additional
visible frames, or selected_window changed, redisplay again. */
if ((windows_or_buffers_changed && !pending)
|| (WINDOWP (selected_window) && (w = XWINDOW (selected_window)) != sw))
goto retry;
/* Clear the face and image caches.
We used to do this only if consider_all_windows_p. But the cache
needs to be cleared if a timer creates images in the current
buffer (e.g. the test case in Bug#6230). */
if (clear_face_cache_count > CLEAR_FACE_CACHE_COUNT)
{
clear_face_cache (false);
clear_face_cache_count = 0;
}
#ifdef HAVE_WINDOW_SYSTEM
if (clear_image_cache_count > CLEAR_IMAGE_CACHE_COUNT)
{
clear_image_caches (Qnil);
clear_image_cache_count = 0;
}
#endif /* HAVE_WINDOW_SYSTEM */
end_of_redisplay:
#ifdef HAVE_NS
ns_set_doc_edited ();
#endif
if (interrupt_input && interrupts_deferred)
request_sigio ();
unbind_to (count, Qnil);
RESUME_POLLING;
}
static void
unwind_redisplay_preserve_echo_area (void)
{
unblock_buffer_flips ();
}
/* Redisplay, but leave alone any recent echo area message unless
another message has been requested in its place.
This is useful in situations where you need to redisplay but no
user action has occurred, making it inappropriate for the message
area to be cleared. See tracking_off and
wait_reading_process_output for examples of these situations.
FROM_WHERE is an integer saying from where this function was
called. This is useful for debugging. */
void
redisplay_preserve_echo_area (int from_where)
{
TRACE ((stderr, "redisplay_preserve_echo_area (%d)\n", from_where));
block_input ();
ptrdiff_t count = SPECPDL_INDEX ();
record_unwind_protect_void (unwind_redisplay_preserve_echo_area);
block_buffer_flips ();
unblock_input ();
if (!NILP (echo_area_buffer[1]))
{
/* We have a previously displayed message, but no current
message. Redisplay the previous message. */
display_last_displayed_message_p = true;
redisplay_internal ();
display_last_displayed_message_p = false;
}
else
redisplay_internal ();
flush_frame (SELECTED_FRAME ());
unbind_to (count, Qnil);
}
/* Function registered with record_unwind_protect in redisplay_internal. */
static void
unwind_redisplay (void)
{
redisplaying_p = false;
unblock_buffer_flips ();
}
/* Mark the display of leaf window W as accurate or inaccurate.
If ACCURATE_P, mark display of W as accurate.
If !ACCURATE_P, arrange for W to be redisplayed the next
time redisplay_internal is called. */
static void
mark_window_display_accurate_1 (struct window *w, bool accurate_p)
{
struct buffer *b = XBUFFER (w->contents);
w->last_modified = accurate_p ? BUF_MODIFF (b) : 0;
w->last_overlay_modified = accurate_p ? BUF_OVERLAY_MODIFF (b) : 0;
w->last_had_star = BUF_MODIFF (b) > BUF_SAVE_MODIFF (b);
if (accurate_p)
{
b->clip_changed = false;
b->prevent_redisplay_optimizations_p = false;
eassert (buffer_window_count (b) > 0);
/* Resetting b->text->redisplay is problematic!
In order to make it safer to do it here, redisplay_internal must
have copied all b->text->redisplay to their respective windows. */
b->text->redisplay = false;
BUF_UNCHANGED_MODIFIED (b) = BUF_MODIFF (b);
BUF_OVERLAY_UNCHANGED_MODIFIED (b) = BUF_OVERLAY_MODIFF (b);
BUF_BEG_UNCHANGED (b) = BUF_GPT (b) - BUF_BEG (b);
BUF_END_UNCHANGED (b) = BUF_Z (b) - BUF_GPT (b);
w->current_matrix->buffer = b;
w->current_matrix->begv = BUF_BEGV (b);
w->current_matrix->zv = BUF_ZV (b);
w->last_cursor_vpos = w->cursor.vpos;
w->last_cursor_off_p = w->cursor_off_p;
if (w == XWINDOW (selected_window))
w->last_point = BUF_PT (b);
else
w->last_point = marker_position (w->pointm);
w->window_end_valid = true;
w->update_mode_line = false;
}
w->redisplay = !accurate_p;
}
/* Mark the display of windows in the window tree rooted at WINDOW as
accurate or inaccurate. If ACCURATE_P, mark display of
windows as accurate. If !ACCURATE_P, arrange for windows to
be redisplayed the next time redisplay_internal is called. */
void
mark_window_display_accurate (Lisp_Object window, bool accurate_p)
{
struct window *w;
for (; !NILP (window); window = w->next)
{
w = XWINDOW (window);
if (WINDOWP (w->contents))
mark_window_display_accurate (w->contents, accurate_p);
else
mark_window_display_accurate_1 (w, accurate_p);
}
if (accurate_p)
update_overlay_arrows (1);
else
/* Force a thorough redisplay the next time by setting
last_arrow_position and last_arrow_string to t, which is
unequal to any useful value of Voverlay_arrow_... */
update_overlay_arrows (-1);
}
/* Return value in display table DP (Lisp_Char_Table *) for character
C. Since a display table doesn't have any parent, we don't have to
follow parent. Do not call this function directly but use the
macro DISP_CHAR_VECTOR. */
Lisp_Object
disp_char_vector (struct Lisp_Char_Table *dp, int c)
{
Lisp_Object val;
if (ASCII_CHAR_P (c))
{
val = dp->ascii;
if (SUB_CHAR_TABLE_P (val))
val = XSUB_CHAR_TABLE (val)->contents[c];
}
else
{
Lisp_Object table;
XSETCHAR_TABLE (table, dp);
val = char_table_ref (table, c);
}
if (NILP (val))
val = dp->defalt;
return val;
}
static int buffer_flip_blocked_depth;
static void
block_buffer_flips (void)
{
eassert (buffer_flip_blocked_depth >= 0);
buffer_flip_blocked_depth++;
}
static void
unblock_buffer_flips (void)
{
eassert (buffer_flip_blocked_depth > 0);
if (--buffer_flip_blocked_depth == 0)
{
Lisp_Object tail, frame;
block_input ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (FRAME_TERMINAL (f)->buffer_flipping_unblocked_hook)
(*FRAME_TERMINAL (f)->buffer_flipping_unblocked_hook) (f);
}
unblock_input ();
}
}
bool
buffer_flipping_blocked_p (void)
{
return buffer_flip_blocked_depth > 0;
}
\f
/***********************************************************************
Window Redisplay
***********************************************************************/
/* Redisplay all leaf windows in the window tree rooted at WINDOW. */
static void
redisplay_windows (Lisp_Object window)
{
while (!NILP (window))
{
struct window *w = XWINDOW (window);
if (WINDOWP (w->contents))
redisplay_windows (w->contents);
else if (BUFFERP (w->contents))
{
displayed_buffer = XBUFFER (w->contents);
/* Use list_of_error, not Qerror, so that
we catch only errors and don't run the debugger. */
internal_condition_case_1 (redisplay_window_0, window,
list_of_error,
redisplay_window_error);
}
window = w->next;
}
}
static Lisp_Object
redisplay_window_error (Lisp_Object ignore)
{
displayed_buffer->display_error_modiff = BUF_MODIFF (displayed_buffer);
return Qnil;
}
static Lisp_Object
redisplay_window_0 (Lisp_Object window)
{
if (displayed_buffer->display_error_modiff < BUF_MODIFF (displayed_buffer))
redisplay_window (window, false);
return Qnil;
}
static Lisp_Object
redisplay_window_1 (Lisp_Object window)
{
if (displayed_buffer->display_error_modiff < BUF_MODIFF (displayed_buffer))
redisplay_window (window, true);
return Qnil;
}
\f
/* Set cursor position of W. PT is assumed to be displayed in ROW.
DELTA and DELTA_BYTES are the numbers of characters and bytes by
which positions recorded in ROW differ from current buffer
positions.
Return true iff cursor is on this row. */
static bool
set_cursor_from_row (struct window *w, struct glyph_row *row,
struct glyph_matrix *matrix,
ptrdiff_t delta, ptrdiff_t delta_bytes,
int dy, int dvpos)
{
struct glyph *glyph = row->glyphs[TEXT_AREA];
struct glyph *end = glyph + row->used[TEXT_AREA];
struct glyph *cursor = NULL;
/* The last known character position in row. */
ptrdiff_t last_pos = MATRIX_ROW_START_CHARPOS (row) + delta;
int x = row->x;
ptrdiff_t pt_old = PT - delta;
ptrdiff_t pos_before = MATRIX_ROW_START_CHARPOS (row) + delta;
ptrdiff_t pos_after = MATRIX_ROW_END_CHARPOS (row) + delta;
struct glyph *glyph_before = glyph - 1, *glyph_after = end;
/* A glyph beyond the edge of TEXT_AREA which we should never
touch. */
struct glyph *glyphs_end = end;
/* True means we've found a match for cursor position, but that
glyph has the avoid_cursor_p flag set. */
bool match_with_avoid_cursor = false;
/* True means we've seen at least one glyph that came from a
display string. */
bool string_seen = false;
/* Largest and smallest buffer positions seen so far during scan of
glyph row. */
ptrdiff_t bpos_max = pos_before;
ptrdiff_t bpos_min = pos_after;
/* Last buffer position covered by an overlay string with an integer
`cursor' property. */
ptrdiff_t bpos_covered = 0;
/* True means the display string on which to display the cursor
comes from a text property, not from an overlay. */
bool string_from_text_prop = false;
/* Don't even try doing anything if called for a mode-line or
header-line row, since the rest of the code isn't prepared to
deal with such calamities. */
eassert (!row->mode_line_p);
if (row->mode_line_p)
return false;
/* Skip over glyphs not having an object at the start and the end of
the row. These are special glyphs like truncation marks on
terminal frames. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (row))
{
if (!row->reversed_p)
{
while (glyph < end
&& NILP (glyph->object)
&& glyph->charpos < 0)
{
x += glyph->pixel_width;
++glyph;
}
while (end > glyph
&& NILP ((end - 1)->object)
/* CHARPOS is zero for blanks and stretch glyphs
inserted by extend_face_to_end_of_line. */
&& (end - 1)->charpos <= 0)
--end;
glyph_before = glyph - 1;
glyph_after = end;
}
else
{
struct glyph *g;
/* If the glyph row is reversed, we need to process it from back
to front, so swap the edge pointers. */
glyphs_end = end = glyph - 1;
glyph += row->used[TEXT_AREA] - 1;
while (glyph > end + 1
&& NILP (glyph->object)
&& glyph->charpos < 0)
{
--glyph;
x -= glyph->pixel_width;
}
if (NILP (glyph->object) && glyph->charpos < 0)
--glyph;
/* By default, in reversed rows we put the cursor on the
rightmost (first in the reading order) glyph. */
for (g = end + 1; g < glyph; g++)
x += g->pixel_width;
while (end < glyph
&& NILP ((end + 1)->object)
&& (end + 1)->charpos <= 0)
++end;
glyph_before = glyph + 1;
glyph_after = end;
}
}
else if (row->reversed_p)
{
/* In R2L rows that don't display text, put the cursor on the
rightmost glyph. Case in point: an empty last line that is
part of an R2L paragraph. */
cursor = end - 1;
/* Avoid placing the cursor on the last glyph of the row, where
on terminal frames we hold the vertical border between
adjacent windows. */
if (!FRAME_WINDOW_P (WINDOW_XFRAME (w))
&& !WINDOW_RIGHTMOST_P (w)
&& cursor == row->glyphs[LAST_AREA] - 1)
cursor--;
x = -1; /* will be computed below, at label compute_x */
}
/* Step 1: Try to find the glyph whose character position
corresponds to point. If that's not possible, find 2 glyphs
whose character positions are the closest to point, one before
point, the other after it. */
if (!row->reversed_p)
while (/* not marched to end of glyph row */
glyph < end
/* glyph was not inserted by redisplay for internal purposes */
&& !NILP (glyph->object))
{
if (BUFFERP (glyph->object))
{
ptrdiff_t dpos = glyph->charpos - pt_old;
if (glyph->charpos > bpos_max)
bpos_max = glyph->charpos;
if (glyph->charpos < bpos_min)
bpos_min = glyph->charpos;
if (!glyph->avoid_cursor_p)
{
/* If we hit point, we've found the glyph on which to
display the cursor. */
if (dpos == 0)
{
match_with_avoid_cursor = false;
break;
}
/* See if we've found a better approximation to
POS_BEFORE or to POS_AFTER. */
if (0 > dpos && dpos > pos_before - pt_old)
{
pos_before = glyph->charpos;
glyph_before = glyph;
}
else if (0 < dpos && dpos < pos_after - pt_old)
{
pos_after = glyph->charpos;
glyph_after = glyph;
}
}
else if (dpos == 0)
match_with_avoid_cursor = true;
}
else if (STRINGP (glyph->object))
{
Lisp_Object chprop;
ptrdiff_t glyph_pos = glyph->charpos;
chprop = Fget_char_property (make_number (glyph_pos), Qcursor,
glyph->object);
if (!NILP (chprop))
{
/* If the string came from a `display' text property,
look up the buffer position of that property and
use that position to update bpos_max, as if we
actually saw such a position in one of the row's
glyphs. This helps with supporting integer values
of `cursor' property on the display string in
situations where most or all of the row's buffer
text is completely covered by display properties,
so that no glyph with valid buffer positions is
ever seen in the row. */
ptrdiff_t prop_pos =
string_buffer_position_lim (glyph->object, pos_before,
pos_after, false);
if (prop_pos >= pos_before)
bpos_max = prop_pos;
}
if (INTEGERP (chprop))
{
bpos_covered = bpos_max + XINT (chprop);
/* If the `cursor' property covers buffer positions up
to and including point, we should display cursor on
this glyph. Note that, if a `cursor' property on one
of the string's characters has an integer value, we
will break out of the loop below _before_ we get to
the position match above. IOW, integer values of
the `cursor' property override the "exact match for
point" strategy of positioning the cursor. */
/* Implementation note: bpos_max == pt_old when, e.g.,
we are in an empty line, where bpos_max is set to
MATRIX_ROW_START_CHARPOS, see above. */
if (bpos_max <= pt_old && bpos_covered >= pt_old)
{
cursor = glyph;
break;
}
}
string_seen = true;
}
x += glyph->pixel_width;
++glyph;
}
else if (glyph > end) /* row is reversed */
while (!NILP (glyph->object))
{
if (BUFFERP (glyph->object))
{
ptrdiff_t dpos = glyph->charpos - pt_old;
if (glyph->charpos > bpos_max)
bpos_max = glyph->charpos;
if (glyph->charpos < bpos_min)
bpos_min = glyph->charpos;
if (!glyph->avoid_cursor_p)
{
if (dpos == 0)
{
match_with_avoid_cursor = false;
break;
}
if (0 > dpos && dpos > pos_before - pt_old)
{
pos_before = glyph->charpos;
glyph_before = glyph;
}
else if (0 < dpos && dpos < pos_after - pt_old)
{
pos_after = glyph->charpos;
glyph_after = glyph;
}
}
else if (dpos == 0)
match_with_avoid_cursor = true;
}
else if (STRINGP (glyph->object))
{
Lisp_Object chprop;
ptrdiff_t glyph_pos = glyph->charpos;
chprop = Fget_char_property (make_number (glyph_pos), Qcursor,
glyph->object);
if (!NILP (chprop))
{
ptrdiff_t prop_pos =
string_buffer_position_lim (glyph->object, pos_before,
pos_after, false);
if (prop_pos >= pos_before)
bpos_max = prop_pos;
}
if (INTEGERP (chprop))
{
bpos_covered = bpos_max + XINT (chprop);
/* If the `cursor' property covers buffer positions up
to and including point, we should display cursor on
this glyph. */
if (bpos_max <= pt_old && bpos_covered >= pt_old)
{
cursor = glyph;
break;
}
}
string_seen = true;
}
--glyph;
if (glyph == glyphs_end) /* don't dereference outside TEXT_AREA */
{
x--; /* can't use any pixel_width */
break;
}
x -= glyph->pixel_width;
}
/* Step 2: If we didn't find an exact match for point, we need to
look for a proper place to put the cursor among glyphs between
GLYPH_BEFORE and GLYPH_AFTER. */
if (!((row->reversed_p ? glyph > glyphs_end : glyph < glyphs_end)
&& BUFFERP (glyph->object) && glyph->charpos == pt_old)
&& !(bpos_max <= pt_old && pt_old <= bpos_covered))
{
/* An empty line has a single glyph whose OBJECT is nil and
whose CHARPOS is the position of a newline on that line.
Note that on a TTY, there are more glyphs after that, which
were produced by extend_face_to_end_of_line, but their
CHARPOS is zero or negative. */
bool empty_line_p =
((row->reversed_p ? glyph > glyphs_end : glyph < glyphs_end)
&& NILP (glyph->object) && glyph->charpos > 0
/* On a TTY, continued and truncated rows also have a glyph at
their end whose OBJECT is nil and whose CHARPOS is
positive (the continuation and truncation glyphs), but such
rows are obviously not "empty". */
&& !(row->continued_p || row->truncated_on_right_p));
if (row->ends_in_ellipsis_p && pos_after == last_pos)
{
ptrdiff_t ellipsis_pos;
/* Scan back over the ellipsis glyphs. */
if (!row->reversed_p)
{
ellipsis_pos = (glyph - 1)->charpos;
while (glyph > row->glyphs[TEXT_AREA]
&& (glyph - 1)->charpos == ellipsis_pos)
glyph--, x -= glyph->pixel_width;
/* That loop always goes one position too far, including
the glyph before the ellipsis. So scan forward over
that one. */
x += glyph->pixel_width;
glyph++;
}
else /* row is reversed */
{
ellipsis_pos = (glyph + 1)->charpos;
while (glyph < row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1
&& (glyph + 1)->charpos == ellipsis_pos)
glyph++, x += glyph->pixel_width;
x -= glyph->pixel_width;
glyph--;
}
}
else if (match_with_avoid_cursor)
{
cursor = glyph_after;
x = -1;
}
else if (string_seen)
{
int incr = row->reversed_p ? -1 : +1;
/* Need to find the glyph that came out of a string which is
present at point. That glyph is somewhere between
GLYPH_BEFORE and GLYPH_AFTER, and it came from a string
positioned between POS_BEFORE and POS_AFTER in the
buffer. */
struct glyph *start, *stop;
ptrdiff_t pos = pos_before;
x = -1;
/* If the row ends in a newline from a display string,
reordering could have moved the glyphs belonging to the
string out of the [GLYPH_BEFORE..GLYPH_AFTER] range. So
in this case we extend the search to the last glyph in
the row that was not inserted by redisplay. */
if (row->ends_in_newline_from_string_p)
{
glyph_after = end;
pos_after = MATRIX_ROW_END_CHARPOS (row) + delta;
}
/* GLYPH_BEFORE and GLYPH_AFTER are the glyphs that
correspond to POS_BEFORE and POS_AFTER, respectively. We
need START and STOP in the order that corresponds to the
row's direction as given by its reversed_p flag. If the
directionality of characters between POS_BEFORE and
POS_AFTER is the opposite of the row's base direction,
these characters will have been reordered for display,
and we need to reverse START and STOP. */
if (!row->reversed_p)
{
start = min (glyph_before, glyph_after);
stop = max (glyph_before, glyph_after);
}
else
{
start = max (glyph_before, glyph_after);
stop = min (glyph_before, glyph_after);
}
for (glyph = start + incr;
row->reversed_p ? glyph > stop : glyph < stop; )
{
/* Any glyphs that come from the buffer are here because
of bidi reordering. Skip them, and only pay
attention to glyphs that came from some string. */
if (STRINGP (glyph->object))
{
Lisp_Object str;
ptrdiff_t tem;
/* If the display property covers the newline, we
need to search for it one position farther. */
ptrdiff_t lim = pos_after
+ (pos_after == MATRIX_ROW_END_CHARPOS (row) + delta);
string_from_text_prop = false;
str = glyph->object;
tem = string_buffer_position_lim (str, pos, lim, false);
if (tem == 0 /* from overlay */
|| pos <= tem)
{
/* If the string from which this glyph came is
found in the buffer at point, or at position
that is closer to point than pos_after, then
we've found the glyph we've been looking for.
If it comes from an overlay (tem == 0), and
it has the `cursor' property on one of its
glyphs, record that glyph as a candidate for
displaying the cursor. (As in the
unidirectional version, we will display the
cursor on the last candidate we find.) */
if (tem == 0
|| tem == pt_old
|| (tem - pt_old > 0 && tem < pos_after))
{
/* The glyphs from this string could have
been reordered. Find the one with the
smallest string position. Or there could
be a character in the string with the
`cursor' property, which means display
cursor on that character's glyph. */
ptrdiff_t strpos = glyph->charpos;
if (tem)
{
cursor = glyph;
string_from_text_prop = true;
}
for ( ;
(row->reversed_p ? glyph > stop : glyph < stop)
&& EQ (glyph->object, str);
glyph += incr)
{
Lisp_Object cprop;
ptrdiff_t gpos = glyph->charpos;
cprop = Fget_char_property (make_number (gpos),
Qcursor,
glyph->object);
if (!NILP (cprop))
{
cursor = glyph;
break;
}
if (tem && glyph->charpos < strpos)
{
strpos = glyph->charpos;
cursor = glyph;
}
}
if (tem == pt_old
|| (tem - pt_old > 0 && tem < pos_after))
goto compute_x;
}
if (tem)
pos = tem + 1; /* don't find previous instances */
}
/* This string is not what we want; skip all of the
glyphs that came from it. */
while ((row->reversed_p ? glyph > stop : glyph < stop)
&& EQ (glyph->object, str))
glyph += incr;
}
else
glyph += incr;
}
/* If we reached the end of the line, and END was from a string,
the cursor is not on this line. */
if (cursor == NULL
&& (row->reversed_p ? glyph <= end : glyph >= end)
&& (row->reversed_p ? end > glyphs_end : end < glyphs_end)
&& STRINGP (end->object)
&& row->continued_p)
return false;
}
/* A truncated row may not include PT among its character positions.
Setting the cursor inside the scroll margin will trigger
recalculation of hscroll in hscroll_window_tree. But if a
display string covers point, defer to the string-handling
code below to figure this out. */
else if (row->truncated_on_left_p && pt_old < bpos_min)
{
cursor = glyph_before;
x = -1;
}
else if ((row->truncated_on_right_p && pt_old > bpos_max)
/* Zero-width characters produce no glyphs. */
|| (!empty_line_p
&& (row->reversed_p
? glyph_after > glyphs_end
: glyph_after < glyphs_end)))
{
cursor = glyph_after;
x = -1;
}
}
compute_x:
if (cursor != NULL)
glyph = cursor;
else if (glyph == glyphs_end
&& pos_before == pos_after
&& STRINGP ((row->reversed_p
? row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1
: row->glyphs[TEXT_AREA])->object))
{
/* If all the glyphs of this row came from strings, put the
cursor on the first glyph of the row. This avoids having the
cursor outside of the text area in this very rare and hard
use case. */
glyph =
row->reversed_p
? row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1
: row->glyphs[TEXT_AREA];
}
if (x < 0)
{
struct glyph *g;
/* Need to compute x that corresponds to GLYPH. */
for (g = row->glyphs[TEXT_AREA], x = row->x; g < glyph; g++)
{
if (g >= row->glyphs[TEXT_AREA] + row->used[TEXT_AREA])
emacs_abort ();
x += g->pixel_width;
}
}
/* ROW could be part of a continued line, which, under bidi
reordering, might have other rows whose start and end charpos
occlude point. Only set w->cursor if we found a better
approximation to the cursor position than we have from previously
examined candidate rows belonging to the same continued line. */
if (/* We already have a candidate row. */
w->cursor.vpos >= 0
/* That candidate is not the row we are processing. */
&& MATRIX_ROW (matrix, w->cursor.vpos) != row
/* Make sure cursor.vpos specifies a row whose start and end
charpos occlude point, and it is valid candidate for being a
cursor-row. This is because some callers of this function
leave cursor.vpos at the row where the cursor was displayed
during the last redisplay cycle. */
&& MATRIX_ROW_START_CHARPOS (MATRIX_ROW (matrix, w->cursor.vpos)) <= pt_old
&& pt_old <= MATRIX_ROW_END_CHARPOS (MATRIX_ROW (matrix, w->cursor.vpos))
&& cursor_row_p (MATRIX_ROW (matrix, w->cursor.vpos)))
{
struct glyph *g1
= MATRIX_ROW_GLYPH_START (matrix, w->cursor.vpos) + w->cursor.hpos;
/* Don't consider glyphs that are outside TEXT_AREA. */
if (!(row->reversed_p ? glyph > glyphs_end : glyph < glyphs_end))
return false;
/* Keep the candidate whose buffer position is the closest to
point or has the `cursor' property. */
if (/* Previous candidate is a glyph in TEXT_AREA of that row. */
w->cursor.hpos >= 0
&& w->cursor.hpos < MATRIX_ROW_USED (matrix, w->cursor.vpos)
&& ((BUFFERP (g1->object)
&& (g1->charpos == pt_old /* An exact match always wins. */
|| (BUFFERP (glyph->object)
&& eabs (g1->charpos - pt_old)
< eabs (glyph->charpos - pt_old))))
/* Previous candidate is a glyph from a string that has
a non-nil `cursor' property. */
|| (STRINGP (g1->object)
&& (!NILP (Fget_char_property (make_number (g1->charpos),
Qcursor, g1->object))
/* Previous candidate is from the same display
string as this one, and the display string
came from a text property. */
|| (EQ (g1->object, glyph->object)
&& string_from_text_prop)
/* this candidate is from newline and its
position is not an exact match */
|| (NILP (glyph->object)
&& glyph->charpos != pt_old)))))
return false;
/* If this candidate gives an exact match, use that. */
if (!((BUFFERP (glyph->object) && glyph->charpos == pt_old)
/* If this candidate is a glyph created for the
terminating newline of a line, and point is on that
newline, it wins because it's an exact match. */
|| (!row->continued_p
&& NILP (glyph->object)
&& glyph->charpos == 0
&& pt_old == MATRIX_ROW_END_CHARPOS (row) - 1))
/* Otherwise, keep the candidate that comes from a row
spanning less buffer positions. This may win when one or
both candidate positions are on glyphs that came from
display strings, for which we cannot compare buffer
positions. */
&& MATRIX_ROW_END_CHARPOS (MATRIX_ROW (matrix, w->cursor.vpos))
- MATRIX_ROW_START_CHARPOS (MATRIX_ROW (matrix, w->cursor.vpos))
< MATRIX_ROW_END_CHARPOS (row) - MATRIX_ROW_START_CHARPOS (row))
return false;
}
w->cursor.hpos = glyph - row->glyphs[TEXT_AREA];
w->cursor.x = x;
w->cursor.vpos = MATRIX_ROW_VPOS (row, matrix) + dvpos;
w->cursor.y = row->y + dy;
if (w == XWINDOW (selected_window))
{
if (!row->continued_p
&& !MATRIX_ROW_CONTINUATION_LINE_P (row)
&& row->x == 0)
{
this_line_buffer = XBUFFER (w->contents);
CHARPOS (this_line_start_pos)
= MATRIX_ROW_START_CHARPOS (row) + delta;
BYTEPOS (this_line_start_pos)
= MATRIX_ROW_START_BYTEPOS (row) + delta_bytes;
CHARPOS (this_line_end_pos)
= Z - (MATRIX_ROW_END_CHARPOS (row) + delta);
BYTEPOS (this_line_end_pos)
= Z_BYTE - (MATRIX_ROW_END_BYTEPOS (row) + delta_bytes);
this_line_y = w->cursor.y;
this_line_pixel_height = row->height;
this_line_vpos = w->cursor.vpos;
this_line_start_x = row->x;
}
else
CHARPOS (this_line_start_pos) = 0;
}
return true;
}
/* Run window scroll functions, if any, for WINDOW with new window
start STARTP. Sets the window start of WINDOW to that position.
We assume that the window's buffer is really current. */
static struct text_pos
run_window_scroll_functions (Lisp_Object window, struct text_pos startp)
{
struct window *w = XWINDOW (window);
SET_MARKER_FROM_TEXT_POS (w->start, startp);
eassert (current_buffer == XBUFFER (w->contents));
if (!NILP (Vwindow_scroll_functions))
{
run_hook_with_args_2 (Qwindow_scroll_functions, window,
make_number (CHARPOS (startp)));
SET_TEXT_POS_FROM_MARKER (startp, w->start);
/* In case the hook functions switch buffers. */
set_buffer_internal (XBUFFER (w->contents));
}
return startp;
}
/* Make sure the line containing the cursor is fully visible.
A value of true means there is nothing to be done.
(Either the line is fully visible, or it cannot be made so,
or we cannot tell.)
If FORCE_P, return false even if partial visible cursor row
is higher than window.
If CURRENT_MATRIX_P, use the information from the
window's current glyph matrix; otherwise use the desired glyph
matrix.
A value of false means the caller should do scrolling
as if point had gone off the screen. */
static bool
cursor_row_fully_visible_p (struct window *w, bool force_p,
bool current_matrix_p)
{
struct glyph_matrix *matrix;
struct glyph_row *row;
int window_height;
if (!make_cursor_line_fully_visible_p)
return true;
/* It's not always possible to find the cursor, e.g, when a window
is full of overlay strings. Don't do anything in that case. */
if (w->cursor.vpos < 0)
return true;
matrix = current_matrix_p ? w->current_matrix : w->desired_matrix;
row = MATRIX_ROW (matrix, w->cursor.vpos);
/* If the cursor row is not partially visible, there's nothing to do. */
if (!MATRIX_ROW_PARTIALLY_VISIBLE_P (w, row))
return true;
/* If the row the cursor is in is taller than the window's height,
it's not clear what to do, so do nothing. */
window_height = window_box_height (w);
if (row->height >= window_height)
{
if (!force_p || MINI_WINDOW_P (w)
|| w->vscroll || w->cursor.vpos == 0)
return true;
}
return false;
}
/* Try scrolling PT into view in window WINDOW. JUST_THIS_ONE_P
means only WINDOW is redisplayed in redisplay_internal.
TEMP_SCROLL_STEP has the same meaning as emacs_scroll_step, and is used
in redisplay_window to bring a partially visible line into view in
the case that only the cursor has moved.
LAST_LINE_MISFIT should be true if we're scrolling because the
last screen line's vertical height extends past the end of the screen.
Value is
1 if scrolling succeeded
0 if scrolling didn't find point.
-1 if new fonts have been loaded so that we must interrupt
redisplay, adjust glyph matrices, and try again. */
enum
{
SCROLLING_SUCCESS,
SCROLLING_FAILED,
SCROLLING_NEED_LARGER_MATRICES
};
/* If scroll-conservatively is more than this, never recenter.
If you change this, don't forget to update the doc string of
`scroll-conservatively' and the Emacs manual. */
#define SCROLL_LIMIT 100
static int
try_scrolling (Lisp_Object window, bool just_this_one_p,
ptrdiff_t arg_scroll_conservatively, ptrdiff_t scroll_step,
bool temp_scroll_step, bool last_line_misfit)
{
struct window *w = XWINDOW (window);
struct frame *f = XFRAME (w->frame);
struct text_pos pos, startp;
struct it it;
int this_scroll_margin, scroll_max, rc, height;
int dy = 0, amount_to_scroll = 0;
bool scroll_down_p = false;
int extra_scroll_margin_lines = last_line_misfit;
Lisp_Object aggressive;
/* We will never try scrolling more than this number of lines. */
int scroll_limit = SCROLL_LIMIT;
int frame_line_height = default_line_pixel_height (w);
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
#ifdef GLYPH_DEBUG
debug_method_add (w, "try_scrolling");
#endif
SET_TEXT_POS_FROM_MARKER (startp, w->start);
/* Compute scroll margin height in pixels. We scroll when point is
within this distance from the top or bottom of the window. */
if (scroll_margin > 0)
this_scroll_margin = min (scroll_margin, window_total_lines / 4)
* frame_line_height;
else
this_scroll_margin = 0;
/* Force arg_scroll_conservatively to have a reasonable value, to
avoid scrolling too far away with slow move_it_* functions. Note
that the user can supply scroll-conservatively equal to
`most-positive-fixnum', which can be larger than INT_MAX. */
if (arg_scroll_conservatively > scroll_limit)
{
arg_scroll_conservatively = scroll_limit + 1;
scroll_max = scroll_limit * frame_line_height;
}
else if (scroll_step || arg_scroll_conservatively || temp_scroll_step)
/* Compute how much we should try to scroll maximally to bring
point into view. */
scroll_max = (max (scroll_step,
max (arg_scroll_conservatively, temp_scroll_step))
* frame_line_height);
else if (NUMBERP (BVAR (current_buffer, scroll_down_aggressively))
|| NUMBERP (BVAR (current_buffer, scroll_up_aggressively)))
/* We're trying to scroll because of aggressive scrolling but no
scroll_step is set. Choose an arbitrary one. */
scroll_max = 10 * frame_line_height;
else
scroll_max = 0;
too_near_end:
/* Decide whether to scroll down. */
if (PT > CHARPOS (startp))
{
int scroll_margin_y;
/* Compute the pixel ypos of the scroll margin, then move IT to
either that ypos or PT, whichever comes first. */
start_display (&it, w, startp);
scroll_margin_y = it.last_visible_y - this_scroll_margin
- frame_line_height * extra_scroll_margin_lines;
move_it_to (&it, PT, -1, scroll_margin_y - 1, -1,
(MOVE_TO_POS | MOVE_TO_Y));
if (PT > CHARPOS (it.current.pos))
{
int y0 = line_bottom_y (&it);
/* Compute how many pixels below window bottom to stop searching
for PT. This avoids costly search for PT that is far away if
the user limited scrolling by a small number of lines, but
always finds PT if scroll_conservatively is set to a large
number, such as most-positive-fixnum. */
int slack = max (scroll_max, 10 * frame_line_height);
int y_to_move = it.last_visible_y + slack;
/* Compute the distance from the scroll margin to PT or to
the scroll limit, whichever comes first. This should
include the height of the cursor line, to make that line
fully visible. */
move_it_to (&it, PT, -1, y_to_move,
-1, MOVE_TO_POS | MOVE_TO_Y);
dy = line_bottom_y (&it) - y0;
if (dy > scroll_max)
return SCROLLING_FAILED;
if (dy > 0)
scroll_down_p = true;
}
else if (PT == IT_CHARPOS (it)
&& IT_CHARPOS (it) < ZV
&& it.method == GET_FROM_STRING
&& arg_scroll_conservatively > scroll_limit
&& it.current_x == 0)
{
enum move_it_result skip;
int y1 = it.current_y;
int vpos;
/* A before-string that includes newlines and is displayed
on the last visible screen line could fail us under
scroll-conservatively > 100, because we will be unable to
position the cursor on that last visible line. Try to
recover by finding the first screen line that has some
glyphs coming from the buffer text. */
do {
skip = move_it_in_display_line_to (&it, ZV, -1, MOVE_TO_POS);
if (skip != MOVE_NEWLINE_OR_CR
|| IT_CHARPOS (it) != PT
|| it.method == GET_FROM_BUFFER)
break;
vpos = it.vpos;
move_it_to (&it, -1, -1, -1, vpos + 1, MOVE_TO_VPOS);
} while (it.vpos > vpos);
dy = it.current_y - y1;
if (dy > scroll_max)
return SCROLLING_FAILED;
if (dy > 0)
scroll_down_p = true;
}
}
if (scroll_down_p)
{
/* Point is in or below the bottom scroll margin, so move the
window start down. If scrolling conservatively, move it just
enough down to make point visible. If scroll_step is set,
move it down by scroll_step. */
if (arg_scroll_conservatively)
amount_to_scroll
= min (max (dy, frame_line_height),
frame_line_height * arg_scroll_conservatively);
else if (scroll_step || temp_scroll_step)
amount_to_scroll = scroll_max;
else
{
aggressive = BVAR (current_buffer, scroll_up_aggressively);
height = WINDOW_BOX_TEXT_HEIGHT (w);
if (NUMBERP (aggressive))
{
double float_amount = XFLOATINT (aggressive) * height;
int aggressive_scroll = float_amount;
if (aggressive_scroll == 0 && float_amount > 0)
aggressive_scroll = 1;
/* Don't let point enter the scroll margin near top of
the window. This could happen if the value of
scroll_up_aggressively is too large and there are
non-zero margins, because scroll_up_aggressively
means put point that fraction of window height
_from_the_bottom_margin_. */
if (aggressive_scroll + 2 * this_scroll_margin > height)
aggressive_scroll = height - 2 * this_scroll_margin;
amount_to_scroll = dy + aggressive_scroll;
}
}
if (amount_to_scroll <= 0)
return SCROLLING_FAILED;
start_display (&it, w, startp);
if (arg_scroll_conservatively <= scroll_limit)
move_it_vertically (&it, amount_to_scroll);
else
{
/* Extra precision for users who set scroll-conservatively
to a large number: make sure the amount we scroll
the window start is never less than amount_to_scroll,
which was computed as distance from window bottom to
point. This matters when lines at window top and lines
below window bottom have different height. */
struct it it1;
void *it1data = NULL;
/* We use a temporary it1 because line_bottom_y can modify
its argument, if it moves one line down; see there. */
int start_y;
SAVE_IT (it1, it, it1data);
start_y = line_bottom_y (&it1);
do {
RESTORE_IT (&it, &it, it1data);
move_it_by_lines (&it, 1);
SAVE_IT (it1, it, it1data);
} while (IT_CHARPOS (it) < ZV
&& line_bottom_y (&it1) - start_y < amount_to_scroll);
bidi_unshelve_cache (it1data, true);
}
/* If STARTP is unchanged, move it down another screen line. */
if (IT_CHARPOS (it) == CHARPOS (startp))
move_it_by_lines (&it, 1);
startp = it.current.pos;
}
else
{
struct text_pos scroll_margin_pos = startp;
int y_offset = 0;
/* See if point is inside the scroll margin at the top of the
window. */
if (this_scroll_margin)
{
int y_start;
start_display (&it, w, startp);
y_start = it.current_y;
move_it_vertically (&it, this_scroll_margin);
scroll_margin_pos = it.current.pos;
/* If we didn't move enough before hitting ZV, request
additional amount of scroll, to move point out of the
scroll margin. */
if (IT_CHARPOS (it) == ZV
&& it.current_y - y_start < this_scroll_margin)
y_offset = this_scroll_margin - (it.current_y - y_start);
}
if (PT < CHARPOS (scroll_margin_pos))
{
/* Point is in the scroll margin at the top of the window or
above what is displayed in the window. */
int y0, y_to_move;
/* Compute the vertical distance from PT to the scroll
margin position. Move as far as scroll_max allows, or
one screenful, or 10 screen lines, whichever is largest.
Give up if distance is greater than scroll_max or if we
didn't reach the scroll margin position. */
SET_TEXT_POS (pos, PT, PT_BYTE);
start_display (&it, w, pos);
y0 = it.current_y;
y_to_move = max (it.last_visible_y,
max (scroll_max, 10 * frame_line_height));
move_it_to (&it, CHARPOS (scroll_margin_pos), 0,
y_to_move, -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
dy = it.current_y - y0;
if (dy > scroll_max
|| IT_CHARPOS (it) < CHARPOS (scroll_margin_pos))
return SCROLLING_FAILED;
/* Additional scroll for when ZV was too close to point. */
dy += y_offset;
/* Compute new window start. */
start_display (&it, w, startp);
if (arg_scroll_conservatively)
amount_to_scroll = max (dy, frame_line_height
* max (scroll_step, temp_scroll_step));
else if (scroll_step || temp_scroll_step)
amount_to_scroll = scroll_max;
else
{
aggressive = BVAR (current_buffer, scroll_down_aggressively);
height = WINDOW_BOX_TEXT_HEIGHT (w);
if (NUMBERP (aggressive))
{
double float_amount = XFLOATINT (aggressive) * height;
int aggressive_scroll = float_amount;
if (aggressive_scroll == 0 && float_amount > 0)
aggressive_scroll = 1;
/* Don't let point enter the scroll margin near
bottom of the window, if the value of
scroll_down_aggressively happens to be too
large. */
if (aggressive_scroll + 2 * this_scroll_margin > height)
aggressive_scroll = height - 2 * this_scroll_margin;
amount_to_scroll = dy + aggressive_scroll;
}
}
if (amount_to_scroll <= 0)
return SCROLLING_FAILED;
move_it_vertically_backward (&it, amount_to_scroll);
startp = it.current.pos;
}
}
/* Run window scroll functions. */
startp = run_window_scroll_functions (window, startp);
/* Display the window. Give up if new fonts are loaded, or if point
doesn't appear. */
if (!try_window (window, startp, 0))
rc = SCROLLING_NEED_LARGER_MATRICES;
else if (w->cursor.vpos < 0)
{
clear_glyph_matrix (w->desired_matrix);
rc = SCROLLING_FAILED;
}
else
{
/* Maybe forget recorded base line for line number display. */
if (!just_this_one_p
|| current_buffer->clip_changed
|| BEG_UNCHANGED < CHARPOS (startp))
w->base_line_number = 0;
/* If cursor ends up on a partially visible line,
treat that as being off the bottom of the screen. */
if (! cursor_row_fully_visible_p (w, extra_scroll_margin_lines <= 1,
false)
/* It's possible that the cursor is on the first line of the
buffer, which is partially obscured due to a vscroll
(Bug#7537). In that case, avoid looping forever. */
&& extra_scroll_margin_lines < w->desired_matrix->nrows - 1)
{
clear_glyph_matrix (w->desired_matrix);
++extra_scroll_margin_lines;
goto too_near_end;
}
rc = SCROLLING_SUCCESS;
}
return rc;
}
/* Compute a suitable window start for window W if display of W starts
on a continuation line. Value is true if a new window start
was computed.
The new window start will be computed, based on W's width, starting
from the start of the continued line. It is the start of the
screen line with the minimum distance from the old start W->start,
which is still before point (otherwise point will definitely not
be visible in the window). */
static bool
compute_window_start_on_continuation_line (struct window *w)
{
struct text_pos pos, start_pos, pos_before_pt;
bool window_start_changed_p = false;
SET_TEXT_POS_FROM_MARKER (start_pos, w->start);
/* If window start is on a continuation line... Window start may be
< BEGV in case there's invisible text at the start of the
buffer (M-x rmail, for example). */
if (CHARPOS (start_pos) > BEGV
&& FETCH_BYTE (BYTEPOS (start_pos) - 1) != '\n')
{
struct it it;
struct glyph_row *row;
/* Handle the case that the window start is out of range. */
if (CHARPOS (start_pos) < BEGV)
SET_TEXT_POS (start_pos, BEGV, BEGV_BYTE);
else if (CHARPOS (start_pos) > ZV)
SET_TEXT_POS (start_pos, ZV, ZV_BYTE);
/* Find the start of the continued line. This should be fast
because find_newline is fast (newline cache). */
row = w->desired_matrix->rows + WINDOW_WANTS_HEADER_LINE_P (w);
init_iterator (&it, w, CHARPOS (start_pos), BYTEPOS (start_pos),
row, DEFAULT_FACE_ID);
reseat_at_previous_visible_line_start (&it);
/* If the line start is "too far" away from the window start,
say it takes too much time to compute a new window start.
Also, give up if the line start is after point, as in that
case point will not be visible with any window start we
compute. */
if (IT_CHARPOS (it) <= PT
|| (CHARPOS (start_pos) - IT_CHARPOS (it)
/* PXW: Do we need upper bounds here? */
< WINDOW_TOTAL_LINES (w) * WINDOW_TOTAL_COLS (w)))
{
int min_distance, distance;
/* Move forward by display lines to find the new window
start. If window width was enlarged, the new start can
be expected to be > the old start. If window width was
decreased, the new window start will be < the old start.
So, we're looking for the display line start with the
minimum distance from the old window start. */
pos_before_pt = pos = it.current.pos;
min_distance = INFINITY;
while ((distance = eabs (CHARPOS (start_pos) - IT_CHARPOS (it))),
distance < min_distance)
{
min_distance = distance;
if (CHARPOS (pos) <= PT)
pos_before_pt = pos;
pos = it.current.pos;
if (it.line_wrap == WORD_WRAP)
{
/* Under WORD_WRAP, move_it_by_lines is likely to
overshoot and stop not at the first, but the
second character from the left margin. So in
that case, we need a more tight control on the X
coordinate of the iterator than move_it_by_lines
promises in its contract. The method is to first
go to the last (rightmost) visible character of a
line, then move to the leftmost character on the
next line in a separate call. */
move_it_to (&it, ZV, it.last_visible_x, it.current_y, -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
move_it_to (&it, ZV, 0,
it.current_y + it.max_ascent + it.max_descent, -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
}
else
move_it_by_lines (&it, 1);
}
/* It makes very little sense to make the new window start
after point, as point won't be visible. If that's what
the loop above finds, fall back on the candidate before
or at point that is closest to the old window start. */
if (CHARPOS (pos) > PT)
pos = pos_before_pt;
/* Set the window start there. */
SET_MARKER_FROM_TEXT_POS (w->start, pos);
window_start_changed_p = true;
}
}
return window_start_changed_p;
}
/* Try cursor movement in case text has not changed in window WINDOW,
with window start STARTP. Value is
CURSOR_MOVEMENT_SUCCESS if successful
CURSOR_MOVEMENT_CANNOT_BE_USED if this method cannot be used
CURSOR_MOVEMENT_MUST_SCROLL if we know we have to scroll the
display. *SCROLL_STEP is set to true, under certain circumstances, if
we want to scroll as if scroll-step were set to 1. See the code.
CURSOR_MOVEMENT_NEED_LARGER_MATRICES if we need larger matrices, in
which case we have to abort this redisplay, and adjust matrices
first. */
enum
{
CURSOR_MOVEMENT_SUCCESS,
CURSOR_MOVEMENT_CANNOT_BE_USED,
CURSOR_MOVEMENT_MUST_SCROLL,
CURSOR_MOVEMENT_NEED_LARGER_MATRICES
};
static int
try_cursor_movement (Lisp_Object window, struct text_pos startp,
bool *scroll_step)
{
struct window *w = XWINDOW (window);
struct frame *f = XFRAME (w->frame);
int rc = CURSOR_MOVEMENT_CANNOT_BE_USED;
#ifdef GLYPH_DEBUG
if (inhibit_try_cursor_movement)
return rc;
#endif
/* Previously, there was a check for Lisp integer in the
if-statement below. Now, this field is converted to
ptrdiff_t, thus zero means invalid position in a buffer. */
eassert (w->last_point > 0);
/* Likewise there was a check whether window_end_vpos is nil or larger
than the window. Now window_end_vpos is int and so never nil, but
let's leave eassert to check whether it fits in the window. */
eassert (!w->window_end_valid
|| w->window_end_vpos < w->current_matrix->nrows);
/* Handle case where text has not changed, only point, and it has
not moved off the frame. */
if (/* Point may be in this window. */
PT >= CHARPOS (startp)
/* Selective display hasn't changed. */
&& !current_buffer->clip_changed
/* Function force-mode-line-update is used to force a thorough
redisplay. It sets either windows_or_buffers_changed or
update_mode_lines. So don't take a shortcut here for these
cases. */
&& !update_mode_lines
&& !windows_or_buffers_changed
&& !f->cursor_type_changed
&& NILP (Vshow_trailing_whitespace)
/* This code is not used for mini-buffer for the sake of the case
of redisplaying to replace an echo area message; since in
that case the mini-buffer contents per se are usually
unchanged. This code is of no real use in the mini-buffer
since the handling of this_line_start_pos, etc., in redisplay
handles the same cases. */
&& !EQ (window, minibuf_window)
&& (FRAME_WINDOW_P (f)
|| !overlay_arrow_in_current_buffer_p ()))
{
int this_scroll_margin, top_scroll_margin;
struct glyph_row *row = NULL;
int frame_line_height = default_line_pixel_height (w);
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
#ifdef GLYPH_DEBUG
debug_method_add (w, "cursor movement");
#endif
/* Scroll if point within this distance from the top or bottom
of the window. This is a pixel value. */
if (scroll_margin > 0)
{
this_scroll_margin = min (scroll_margin, window_total_lines / 4);
this_scroll_margin *= frame_line_height;
}
else
this_scroll_margin = 0;
top_scroll_margin = this_scroll_margin;
if (WINDOW_WANTS_HEADER_LINE_P (w))
top_scroll_margin += CURRENT_HEADER_LINE_HEIGHT (w);
/* Start with the row the cursor was displayed during the last
not paused redisplay. Give up if that row is not valid. */
if (w->last_cursor_vpos < 0
|| w->last_cursor_vpos >= w->current_matrix->nrows)
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else
{
row = MATRIX_ROW (w->current_matrix, w->last_cursor_vpos);
if (row->mode_line_p)
++row;
if (!row->enabled_p)
rc = CURSOR_MOVEMENT_MUST_SCROLL;
}
if (rc == CURSOR_MOVEMENT_CANNOT_BE_USED)
{
bool scroll_p = false, must_scroll = false;
int last_y = window_text_bottom_y (w) - this_scroll_margin;
if (PT > w->last_point)
{
/* Point has moved forward. */
while (MATRIX_ROW_END_CHARPOS (row) < PT
&& MATRIX_ROW_BOTTOM_Y (row) < last_y)
{
eassert (row->enabled_p);
++row;
}
/* If the end position of a row equals the start
position of the next row, and PT is at that position,
we would rather display cursor in the next line. */
while (MATRIX_ROW_BOTTOM_Y (row) < last_y
&& MATRIX_ROW_END_CHARPOS (row) == PT
&& row < MATRIX_MODE_LINE_ROW (w->current_matrix)
&& MATRIX_ROW_START_CHARPOS (row+1) == PT
&& !cursor_row_p (row))
++row;
/* If within the scroll margin, scroll. Note that
MATRIX_ROW_BOTTOM_Y gives the pixel position at which
the next line would be drawn, and that
this_scroll_margin can be zero. */
if (MATRIX_ROW_BOTTOM_Y (row) > last_y
|| PT > MATRIX_ROW_END_CHARPOS (row)
/* Line is completely visible last line in window
and PT is to be set in the next line. */
|| (MATRIX_ROW_BOTTOM_Y (row) == last_y
&& PT == MATRIX_ROW_END_CHARPOS (row)
&& !row->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (row)))
scroll_p = true;
}
else if (PT < w->last_point)
{
/* Cursor has to be moved backward. Note that PT >=
CHARPOS (startp) because of the outer if-statement. */
while (!row->mode_line_p
&& (MATRIX_ROW_START_CHARPOS (row) > PT
|| (MATRIX_ROW_START_CHARPOS (row) == PT
&& (MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P (row)
|| (/* STARTS_IN_MIDDLE_OF_STRING_P (row) */
row > w->current_matrix->rows
&& (row-1)->ends_in_newline_from_string_p))))
&& (row->y > top_scroll_margin
|| CHARPOS (startp) == BEGV))
{
eassert (row->enabled_p);
--row;
}
/* Consider the following case: Window starts at BEGV,
there is invisible, intangible text at BEGV, so that
display starts at some point START > BEGV. It can
happen that we are called with PT somewhere between
BEGV and START. Try to handle that case. */
if (row < w->current_matrix->rows
|| row->mode_line_p)
{
row = w->current_matrix->rows;
if (row->mode_line_p)
++row;
}
/* Due to newlines in overlay strings, we may have to
skip forward over overlay strings. */
while (MATRIX_ROW_BOTTOM_Y (row) < last_y
&& MATRIX_ROW_END_CHARPOS (row) == PT
&& !cursor_row_p (row))
++row;
/* If within the scroll margin, scroll. */
if (row->y < top_scroll_margin
&& CHARPOS (startp) != BEGV)
scroll_p = true;
}
else
{
/* Cursor did not move. So don't scroll even if cursor line
is partially visible, as it was so before. */
rc = CURSOR_MOVEMENT_SUCCESS;
}
if (PT < MATRIX_ROW_START_CHARPOS (row)
|| PT > MATRIX_ROW_END_CHARPOS (row))
{
/* if PT is not in the glyph row, give up. */
rc = CURSOR_MOVEMENT_MUST_SCROLL;
must_scroll = true;
}
else if (rc != CURSOR_MOVEMENT_SUCCESS
&& !NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering)))
{
struct glyph_row *row1;
/* If rows are bidi-reordered and point moved, back up
until we find a row that does not belong to a
continuation line. This is because we must consider
all rows of a continued line as candidates for the
new cursor positioning, since row start and end
positions change non-linearly with vertical position
in such rows. */
/* FIXME: Revisit this when glyph ``spilling'' in
continuation lines' rows is implemented for
bidi-reordered rows. */
for (row1 = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
MATRIX_ROW_CONTINUATION_LINE_P (row);
--row)
{
/* If we hit the beginning of the displayed portion
without finding the first row of a continued
line, give up. */
if (row <= row1)
{
rc = CURSOR_MOVEMENT_MUST_SCROLL;
break;
}
eassert (row->enabled_p);
}
}
if (must_scroll)
;
else if (rc != CURSOR_MOVEMENT_SUCCESS
&& MATRIX_ROW_PARTIALLY_VISIBLE_P (w, row)
/* Make sure this isn't a header line by any chance, since
then MATRIX_ROW_PARTIALLY_VISIBLE_P might yield true. */
&& !row->mode_line_p
&& make_cursor_line_fully_visible_p)
{
if (PT == MATRIX_ROW_END_CHARPOS (row)
&& !row->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (row))
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else if (row->height > window_box_height (w))
{
/* If we end up in a partially visible line, let's
make it fully visible, except when it's taller
than the window, in which case we can't do much
about it. */
*scroll_step = true;
rc = CURSOR_MOVEMENT_MUST_SCROLL;
}
else
{
set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
if (!cursor_row_fully_visible_p (w, false, true))
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else
rc = CURSOR_MOVEMENT_SUCCESS;
}
}
else if (scroll_p)
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else if (rc != CURSOR_MOVEMENT_SUCCESS
&& !NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering)))
{
/* With bidi-reordered rows, there could be more than
one candidate row whose start and end positions
occlude point. We need to let set_cursor_from_row
find the best candidate. */
/* FIXME: Revisit this when glyph ``spilling'' in
continuation lines' rows is implemented for
bidi-reordered rows. */
bool rv = false;
do
{
bool at_zv_p = false, exact_match_p = false;
if (MATRIX_ROW_START_CHARPOS (row) <= PT
&& PT <= MATRIX_ROW_END_CHARPOS (row)
&& cursor_row_p (row))
rv |= set_cursor_from_row (w, row, w->current_matrix,
0, 0, 0, 0);
/* As soon as we've found the exact match for point,
or the first suitable row whose ends_at_zv_p flag
is set, we are done. */
if (rv)
{
at_zv_p = MATRIX_ROW (w->current_matrix,
w->cursor.vpos)->ends_at_zv_p;
if (!at_zv_p
&& w->cursor.hpos >= 0
&& w->cursor.hpos < MATRIX_ROW_USED (w->current_matrix,
w->cursor.vpos))
{
struct glyph_row *candidate =
MATRIX_ROW (w->current_matrix, w->cursor.vpos);
struct glyph *g =
candidate->glyphs[TEXT_AREA] + w->cursor.hpos;
ptrdiff_t endpos = MATRIX_ROW_END_CHARPOS (candidate);
exact_match_p =
(BUFFERP (g->object) && g->charpos == PT)
|| (NILP (g->object)
&& (g->charpos == PT
|| (g->charpos == 0 && endpos - 1 == PT)));
}
if (at_zv_p || exact_match_p)
{
rc = CURSOR_MOVEMENT_SUCCESS;
break;
}
}
if (MATRIX_ROW_BOTTOM_Y (row) == last_y)
break;
++row;
}
while (((MATRIX_ROW_CONTINUATION_LINE_P (row)
|| row->continued_p)
&& MATRIX_ROW_BOTTOM_Y (row) <= last_y)
|| (MATRIX_ROW_START_CHARPOS (row) == PT
&& MATRIX_ROW_BOTTOM_Y (row) < last_y));
/* If we didn't find any candidate rows, or exited the
loop before all the candidates were examined, signal
to the caller that this method failed. */
if (rc != CURSOR_MOVEMENT_SUCCESS
&& !(rv
&& !MATRIX_ROW_CONTINUATION_LINE_P (row)
&& !row->continued_p))
rc = CURSOR_MOVEMENT_MUST_SCROLL;
else if (rv)
rc = CURSOR_MOVEMENT_SUCCESS;
}
else
{
do
{
if (set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0))
{
rc = CURSOR_MOVEMENT_SUCCESS;
break;
}
++row;
}
while (MATRIX_ROW_BOTTOM_Y (row) < last_y
&& MATRIX_ROW_START_CHARPOS (row) == PT
&& cursor_row_p (row));
}
}
}
return rc;
}
void
set_vertical_scroll_bar (struct window *w)
{
ptrdiff_t start, end, whole;
/* Calculate the start and end positions for the current window.
At some point, it would be nice to choose between scrollbars
which reflect the whole buffer size, with special markers
indicating narrowing, and scrollbars which reflect only the
visible region.
Note that mini-buffers sometimes aren't displaying any text. */
if (!MINI_WINDOW_P (w)
|| (w == XWINDOW (minibuf_window)
&& NILP (echo_area_buffer[0])))
{
struct buffer *buf = XBUFFER (w->contents);
whole = BUF_ZV (buf) - BUF_BEGV (buf);
start = marker_position (w->start) - BUF_BEGV (buf);
/* I don't think this is guaranteed to be right. For the
moment, we'll pretend it is. */
end = BUF_Z (buf) - w->window_end_pos - BUF_BEGV (buf);
if (end < start)
end = start;
if (whole < (end - start))
whole = end - start;
}
else
start = end = whole = 0;
/* Indicate what this scroll bar ought to be displaying now. */
if (FRAME_TERMINAL (XFRAME (w->frame))->set_vertical_scroll_bar_hook)
(*FRAME_TERMINAL (XFRAME (w->frame))->set_vertical_scroll_bar_hook)
(w, end - start, whole, start);
}
void
set_horizontal_scroll_bar (struct window *w)
{
int start, end, whole, portion;
if (!MINI_WINDOW_P (w)
|| (w == XWINDOW (minibuf_window)
&& NILP (echo_area_buffer[0])))
{
struct buffer *b = XBUFFER (w->contents);
struct buffer *old_buffer = NULL;
struct it it;
struct text_pos startp;
if (b != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal (b);
}
SET_TEXT_POS_FROM_MARKER (startp, w->start);
start_display (&it, w, startp);
it.last_visible_x = INT_MAX;
whole = move_it_to (&it, -1, INT_MAX, window_box_height (w), -1,
MOVE_TO_X | MOVE_TO_Y);
/* whole = move_it_to (&it, w->window_end_pos, INT_MAX,
window_box_height (w), -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y); */
start = w->hscroll * FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w));
end = start + window_box_width (w, TEXT_AREA);
portion = end - start;
/* After enlarging a horizontally scrolled window such that it
gets at least as wide as the text it contains, make sure that
the thumb doesn't fill the entire scroll bar so we can still
drag it back to see the entire text. */
whole = max (whole, end);
if (it.bidi_p)
{
Lisp_Object pdir;
pdir = Fcurrent_bidi_paragraph_direction (Qnil);
if (EQ (pdir, Qright_to_left))
{
start = whole - end;
end = start + portion;
}
}
if (old_buffer)
set_buffer_internal (old_buffer);
}
else
start = end = whole = portion = 0;
w->hscroll_whole = whole;
/* Indicate what this scroll bar ought to be displaying now. */
if (FRAME_TERMINAL (XFRAME (w->frame))->set_horizontal_scroll_bar_hook)
(*FRAME_TERMINAL (XFRAME (w->frame))->set_horizontal_scroll_bar_hook)
(w, portion, whole, start);
}
/* Redisplay leaf window WINDOW. JUST_THIS_ONE_P means only
selected_window is redisplayed.
We can return without actually redisplaying the window if fonts has been
changed on window's frame. In that case, redisplay_internal will retry.
As one of the important parts of redisplaying a window, we need to
decide whether the previous window-start position (stored in the
window's w->start marker position) is still valid, and if it isn't,
recompute it. Some details about that:
. The previous window-start could be in a continuation line, in
which case we need to recompute it when the window width
changes. See compute_window_start_on_continuation_line and its
call below.
. The text that changed since last redisplay could include the
previous window-start position. In that case, we try to salvage
what we can from the current glyph matrix by calling
try_scrolling, which see.
. Some Emacs command could force us to use a specific window-start
position by setting the window's force_start flag, or gently
propose doing that by setting the window's optional_new_start
flag. In these cases, we try using the specified start point if
that succeeds (i.e. the window desired matrix is successfully
recomputed, and point location is within the window). In case
of optional_new_start, we first check if the specified start
position is feasible, i.e. if it will allow point to be
displayed in the window. If using the specified start point
fails, e.g., if new fonts are needed to be loaded, we abort the
redisplay cycle and leave it up to the next cycle to figure out
things.
. Note that the window's force_start flag is sometimes set by
redisplay itself, when it decides that the previous window start
point is fine and should be kept. Search for "goto force_start"
below to see the details. Like the values of window-start
specified outside of redisplay, these internally-deduced values
are tested for feasibility, and ignored if found to be
unfeasible.
. Note that the function try_window, used to completely redisplay
a window, accepts the window's start point as its argument.
This is used several times in the redisplay code to control
where the window start will be, according to user options such
as scroll-conservatively, and also to ensure the screen line
showing point will be fully (as opposed to partially) visible on
display. */
static void
redisplay_window (Lisp_Object window, bool just_this_one_p)
{
struct window *w = XWINDOW (window);
struct frame *f = XFRAME (w->frame);
struct buffer *buffer = XBUFFER (w->contents);
struct buffer *old = current_buffer;
struct text_pos lpoint, opoint, startp;
bool update_mode_line;
int tem;
struct it it;
/* Record it now because it's overwritten. */
bool current_matrix_up_to_date_p = false;
bool used_current_matrix_p = false;
/* This is less strict than current_matrix_up_to_date_p.
It indicates that the buffer contents and narrowing are unchanged. */
bool buffer_unchanged_p = false;
bool temp_scroll_step = false;
ptrdiff_t count = SPECPDL_INDEX ();
int rc;
int centering_position = -1;
bool last_line_misfit = false;
ptrdiff_t beg_unchanged, end_unchanged;
int frame_line_height;
bool use_desired_matrix;
void *itdata = NULL;
SET_TEXT_POS (lpoint, PT, PT_BYTE);
opoint = lpoint;
#ifdef GLYPH_DEBUG
*w->desired_matrix->method = 0;
#endif
if (!just_this_one_p
&& REDISPLAY_SOME_P ()
&& !w->redisplay
&& !w->update_mode_line
&& !f->face_change
&& !f->redisplay
&& !buffer->text->redisplay
&& BUF_PT (buffer) == w->last_point)
return;
/* Make sure that both W's markers are valid. */
eassert (XMARKER (w->start)->buffer == buffer);
eassert (XMARKER (w->pointm)->buffer == buffer);
/* We come here again if we need to run window-text-change-functions
below. */
restart:
reconsider_clip_changes (w);
frame_line_height = default_line_pixel_height (w);
/* Has the mode line to be updated? */
update_mode_line = (w->update_mode_line
|| update_mode_lines
|| buffer->clip_changed
|| buffer->prevent_redisplay_optimizations_p);
if (!just_this_one_p)
/* If `just_this_one_p' is set, we apparently set must_be_updated_p more
cleverly elsewhere. */
w->must_be_updated_p = true;
if (MINI_WINDOW_P (w))
{
if (w == XWINDOW (echo_area_window)
&& !NILP (echo_area_buffer[0]))
{
if (update_mode_line)
/* We may have to update a tty frame's menu bar or a
tool-bar. Example `M-x C-h C-h C-g'. */
goto finish_menu_bars;
else
/* We've already displayed the echo area glyphs in this window. */
goto finish_scroll_bars;
}
else if ((w != XWINDOW (minibuf_window)
|| minibuf_level == 0)
/* When buffer is nonempty, redisplay window normally. */
&& BUF_Z (XBUFFER (w->contents)) == BUF_BEG (XBUFFER (w->contents))
/* Quail displays non-mini buffers in minibuffer window.
In that case, redisplay the window normally. */
&& !NILP (Fmemq (w->contents, Vminibuffer_list)))
{
/* W is a mini-buffer window, but it's not active, so clear
it. */
int yb = window_text_bottom_y (w);
struct glyph_row *row;
int y;
for (y = 0, row = w->desired_matrix->rows;
y < yb;
y += row->height, ++row)
blank_row (w, row, y);
goto finish_scroll_bars;
}
clear_glyph_matrix (w->desired_matrix);
}
/* Otherwise set up data on this window; select its buffer and point
value. */
/* Really select the buffer, for the sake of buffer-local
variables. */
set_buffer_internal_1 (XBUFFER (w->contents));
current_matrix_up_to_date_p
= (w->window_end_valid
&& !current_buffer->clip_changed
&& !current_buffer->prevent_redisplay_optimizations_p
&& !window_outdated (w));
/* Run the window-text-change-functions
if it is possible that the text on the screen has changed
(either due to modification of the text, or any other reason). */
if (!current_matrix_up_to_date_p
&& !NILP (Vwindow_text_change_functions))
{
safe_run_hooks (Qwindow_text_change_functions);
goto restart;
}
beg_unchanged = BEG_UNCHANGED;
end_unchanged = END_UNCHANGED;
SET_TEXT_POS (opoint, PT, PT_BYTE);
specbind (Qinhibit_point_motion_hooks, Qt);
buffer_unchanged_p
= (w->window_end_valid
&& !current_buffer->clip_changed
&& !window_outdated (w));
/* When windows_or_buffers_changed is non-zero, we can't rely
on the window end being valid, so set it to zero there. */
if (windows_or_buffers_changed)
{
/* If window starts on a continuation line, maybe adjust the
window start in case the window's width changed. */
if (XMARKER (w->start)->buffer == current_buffer)
compute_window_start_on_continuation_line (w);
w->window_end_valid = false;
/* If so, we also can't rely on current matrix
and should not fool try_cursor_movement below. */
current_matrix_up_to_date_p = false;
}
/* Some sanity checks. */
CHECK_WINDOW_END (w);
if (Z == Z_BYTE && CHARPOS (opoint) != BYTEPOS (opoint))
emacs_abort ();
if (BYTEPOS (opoint) < CHARPOS (opoint))
emacs_abort ();
if (mode_line_update_needed (w))
update_mode_line = true;
/* Point refers normally to the selected window. For any other
window, set up appropriate value. */
if (!EQ (window, selected_window))
{
ptrdiff_t new_pt = marker_position (w->pointm);
ptrdiff_t new_pt_byte = marker_byte_position (w->pointm);
if (new_pt < BEGV)
{
new_pt = BEGV;
new_pt_byte = BEGV_BYTE;
set_marker_both (w->pointm, Qnil, BEGV, BEGV_BYTE);
}
else if (new_pt > (ZV - 1))
{
new_pt = ZV;
new_pt_byte = ZV_BYTE;
set_marker_both (w->pointm, Qnil, ZV, ZV_BYTE);
}
/* We don't use SET_PT so that the point-motion hooks don't run. */
TEMP_SET_PT_BOTH (new_pt, new_pt_byte);
}
/* If any of the character widths specified in the display table
have changed, invalidate the width run cache. It's true that
this may be a bit late to catch such changes, but the rest of
redisplay goes (non-fatally) haywire when the display table is
changed, so why should we worry about doing any better? */
if (current_buffer->width_run_cache
|| (current_buffer->base_buffer
&& current_buffer->base_buffer->width_run_cache))
{
struct Lisp_Char_Table *disptab = buffer_display_table ();
if (! disptab_matches_widthtab
(disptab, XVECTOR (BVAR (current_buffer, width_table))))
{
struct buffer *buf = current_buffer;
if (buf->base_buffer)
buf = buf->base_buffer;
invalidate_region_cache (buf, buf->width_run_cache, BEG, Z);
recompute_width_table (current_buffer, disptab);
}
}
/* If window-start is screwed up, choose a new one. */
if (XMARKER (w->start)->buffer != current_buffer)
goto recenter;
SET_TEXT_POS_FROM_MARKER (startp, w->start);
/* If someone specified a new starting point but did not insist,
check whether it can be used. */
if ((w->optional_new_start || window_frozen_p (w))
&& CHARPOS (startp) >= BEGV
&& CHARPOS (startp) <= ZV)
{
ptrdiff_t it_charpos;
w->optional_new_start = false;
start_display (&it, w, startp);
move_it_to (&it, PT, 0, it.last_visible_y, -1,
MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y);
/* Record IT's position now, since line_bottom_y might change
that. */
it_charpos = IT_CHARPOS (it);
/* Make sure we set the force_start flag only if the cursor row
will be fully visible. Otherwise, the code under force_start
label below will try to move point back into view, which is
not what the code which sets optional_new_start wants. */
if ((it.current_y == 0 || line_bottom_y (&it) < it.last_visible_y)
&& !w->force_start)
{
if (it_charpos == PT)
w->force_start = true;
/* IT may overshoot PT if text at PT is invisible. */
else if (it_charpos > PT && CHARPOS (startp) <= PT)
w->force_start = true;
#ifdef GLYPH_DEBUG
if (w->force_start)
{
if (window_frozen_p (w))
debug_method_add (w, "set force_start from frozen window start");
else
debug_method_add (w, "set force_start from optional_new_start");
}
#endif
}
}
force_start:
/* Handle case where place to start displaying has been specified,
unless the specified location is outside the accessible range. */
if (w->force_start)
{
/* We set this later on if we have to adjust point. */
int new_vpos = -1;
w->force_start = false;
w->vscroll = 0;
w->window_end_valid = false;
/* Forget any recorded base line for line number display. */
if (!buffer_unchanged_p)
w->base_line_number = 0;
/* Redisplay the mode line. Select the buffer properly for that.
Also, run the hook window-scroll-functions
because we have scrolled. */
/* Note, we do this after clearing force_start because
if there's an error, it is better to forget about force_start
than to get into an infinite loop calling the hook functions
and having them get more errors. */
if (!update_mode_line
|| ! NILP (Vwindow_scroll_functions))
{
update_mode_line = true;
w->update_mode_line = true;
startp = run_window_scroll_functions (window, startp);
}
if (CHARPOS (startp) < BEGV)
SET_TEXT_POS (startp, BEGV, BEGV_BYTE);
else if (CHARPOS (startp) > ZV)
SET_TEXT_POS (startp, ZV, ZV_BYTE);
/* Redisplay, then check if cursor has been set during the
redisplay. Give up if new fonts were loaded. */
/* We used to issue a CHECK_MARGINS argument to try_window here,
but this causes scrolling to fail when point begins inside
the scroll margin (bug#148) -- cyd */
if (!try_window (window, startp, 0))
{
w->force_start = true;
clear_glyph_matrix (w->desired_matrix);
goto need_larger_matrices;
}
if (w->cursor.vpos < 0)
{
/* If point does not appear, try to move point so it does
appear. The desired matrix has been built above, so we
can use it here. First see if point is in invisible
text, and if so, move it to the first visible buffer
position past that. */
struct glyph_row *r = NULL;
Lisp_Object invprop =
get_char_property_and_overlay (make_number (PT), Qinvisible,
Qnil, NULL);
if (TEXT_PROP_MEANS_INVISIBLE (invprop) != 0)
{
ptrdiff_t alt_pt;
Lisp_Object invprop_end =
Fnext_single_char_property_change (make_number (PT), Qinvisible,
Qnil, Qnil);
if (NATNUMP (invprop_end))
alt_pt = XFASTINT (invprop_end);
else
alt_pt = ZV;
r = row_containing_pos (w, alt_pt, w->desired_matrix->rows,
NULL, 0);
}
if (r)
new_vpos = MATRIX_ROW_BOTTOM_Y (r);
else /* Give up and just move to the middle of the window. */
new_vpos = window_box_height (w) / 2;
}
if (!cursor_row_fully_visible_p (w, false, false))
{
/* Point does appear, but on a line partly visible at end of window.
Move it back to a fully-visible line. */
new_vpos = window_box_height (w);
/* But if window_box_height suggests a Y coordinate that is
not less than we already have, that line will clearly not
be fully visible, so give up and scroll the display.
This can happen when the default face uses a font whose
dimensions are different from the frame's default
font. */
if (new_vpos >= w->cursor.y)
{
w->cursor.vpos = -1;
clear_glyph_matrix (w->desired_matrix);
goto try_to_scroll;
}
}
else if (w->cursor.vpos >= 0)
{
/* Some people insist on not letting point enter the scroll
margin, even though this part handles windows that didn't
scroll at all. */
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
int margin = min (scroll_margin, window_total_lines / 4);
int pixel_margin = margin * frame_line_height;
bool header_line = WINDOW_WANTS_HEADER_LINE_P (w);
/* Note: We add an extra FRAME_LINE_HEIGHT, because the loop
below, which finds the row to move point to, advances by
the Y coordinate of the _next_ row, see the definition of
MATRIX_ROW_BOTTOM_Y. */
if (w->cursor.vpos < margin + header_line)
{
w->cursor.vpos = -1;
clear_glyph_matrix (w->desired_matrix);
goto try_to_scroll;
}
else
{
int window_height = window_box_height (w);
if (header_line)
window_height += CURRENT_HEADER_LINE_HEIGHT (w);
if (w->cursor.y >= window_height - pixel_margin)
{
w->cursor.vpos = -1;
clear_glyph_matrix (w->desired_matrix);
goto try_to_scroll;
}
}
}
/* If we need to move point for either of the above reasons,
now actually do it. */
if (new_vpos >= 0)
{
struct glyph_row *row;
row = MATRIX_FIRST_TEXT_ROW (w->desired_matrix);
while (MATRIX_ROW_BOTTOM_Y (row) < new_vpos)
++row;
TEMP_SET_PT_BOTH (MATRIX_ROW_START_CHARPOS (row),
MATRIX_ROW_START_BYTEPOS (row));
if (w != XWINDOW (selected_window))
set_marker_both (w->pointm, Qnil, PT, PT_BYTE);
else if (current_buffer == old)
SET_TEXT_POS (lpoint, PT, PT_BYTE);
set_cursor_from_row (w, row, w->desired_matrix, 0, 0, 0, 0);
/* Re-run pre-redisplay-function so it can update the region
according to the new position of point. */
/* Other than the cursor, w's redisplay is done so we can set its
redisplay to false. Also the buffer's redisplay can be set to
false, since propagate_buffer_redisplay should have already
propagated its info to `w' anyway. */
w->redisplay = false;
XBUFFER (w->contents)->text->redisplay = false;
safe__call1 (true, Vpre_redisplay_function, Fcons (window, Qnil));
if (w->redisplay || XBUFFER (w->contents)->text->redisplay)
{
/* pre-redisplay-function made changes (e.g. move the region)
that require another round of redisplay. */
clear_glyph_matrix (w->desired_matrix);
if (!try_window (window, startp, 0))
goto need_larger_matrices;
}
}
if (w->cursor.vpos < 0 || !cursor_row_fully_visible_p (w, false, false))
{
clear_glyph_matrix (w->desired_matrix);
goto try_to_scroll;
}
#ifdef GLYPH_DEBUG
debug_method_add (w, "forced window start");
#endif
goto done;
}
/* Handle case where text has not changed, only point, and it has
not moved off the frame, and we are not retrying after hscroll.
(current_matrix_up_to_date_p is true when retrying.) */
if (current_matrix_up_to_date_p
&& (rc = try_cursor_movement (window, startp, &temp_scroll_step),
rc != CURSOR_MOVEMENT_CANNOT_BE_USED))
{
switch (rc)
{
case CURSOR_MOVEMENT_SUCCESS:
used_current_matrix_p = true;
goto done;
case CURSOR_MOVEMENT_MUST_SCROLL:
goto try_to_scroll;
default:
emacs_abort ();
}
}
/* If current starting point was originally the beginning of a line
but no longer is, find a new starting point. */
else if (w->start_at_line_beg
&& !(CHARPOS (startp) <= BEGV
|| FETCH_BYTE (BYTEPOS (startp) - 1) == '\n'))
{
#ifdef GLYPH_DEBUG
debug_method_add (w, "recenter 1");
#endif
goto recenter;
}
/* Try scrolling with try_window_id. Value is > 0 if update has
been done, it is -1 if we know that the same window start will
not work. It is 0 if unsuccessful for some other reason. */
else if ((tem = try_window_id (w)) != 0)
{
#ifdef GLYPH_DEBUG
debug_method_add (w, "try_window_id %d", tem);
#endif
if (f->fonts_changed)
goto need_larger_matrices;
if (tem > 0)
goto done;
/* Otherwise try_window_id has returned -1 which means that we
don't want the alternative below this comment to execute. */
}
else if (CHARPOS (startp) >= BEGV
&& CHARPOS (startp) <= ZV
&& PT >= CHARPOS (startp)
&& (CHARPOS (startp) < ZV
/* Avoid starting at end of buffer. */
|| CHARPOS (startp) == BEGV
|| !window_outdated (w)))
{
int d1, d2, d5, d6;
int rtop, rbot;
/* If first window line is a continuation line, and window start
is inside the modified region, but the first change is before
current window start, we must select a new window start.
However, if this is the result of a down-mouse event (e.g. by
extending the mouse-drag-overlay), we don't want to select a
new window start, since that would change the position under
the mouse, resulting in an unwanted mouse-movement rather
than a simple mouse-click. */
if (!w->start_at_line_beg
&& NILP (do_mouse_tracking)
&& CHARPOS (startp) > BEGV
&& CHARPOS (startp) > BEG + beg_unchanged
&& CHARPOS (startp) <= Z - end_unchanged
/* Even if w->start_at_line_beg is nil, a new window may
start at a line_beg, since that's how set_buffer_window
sets it. So, we need to check the return value of
compute_window_start_on_continuation_line. (See also
bug#197). */
&& XMARKER (w->start)->buffer == current_buffer
&& compute_window_start_on_continuation_line (w)
/* It doesn't make sense to force the window start like we
do at label force_start if it is already known that point
will not be fully visible in the resulting window, because
doing so will move point from its correct position
instead of scrolling the window to bring point into view.
See bug#9324. */
&& pos_visible_p (w, PT, &d1, &d2, &rtop, &rbot, &d5, &d6)
/* A very tall row could need more than the window height,
in which case we accept that it is partially visible. */
&& (rtop != 0) == (rbot != 0))
{
w->force_start = true;
SET_TEXT_POS_FROM_MARKER (startp, w->start);
#ifdef GLYPH_DEBUG
debug_method_add (w, "recomputed window start in continuation line");
#endif
goto force_start;
}
#ifdef GLYPH_DEBUG
debug_method_add (w, "same window start");
#endif
/* Try to redisplay starting at same place as before.
If point has not moved off frame, accept the results. */
if (!current_matrix_up_to_date_p
/* Don't use try_window_reusing_current_matrix in this case
because a window scroll function can have changed the
buffer. */
|| !NILP (Vwindow_scroll_functions)
|| MINI_WINDOW_P (w)
|| !(used_current_matrix_p
= try_window_reusing_current_matrix (w)))
{
IF_DEBUG (debug_method_add (w, "1"));
if (try_window (window, startp, TRY_WINDOW_CHECK_MARGINS) < 0)
/* -1 means we need to scroll.
0 means we need new matrices, but fonts_changed
is set in that case, so we will detect it below. */
goto try_to_scroll;
}
if (f->fonts_changed)
goto need_larger_matrices;
if (w->cursor.vpos >= 0)
{
if (!just_this_one_p
|| current_buffer->clip_changed
|| BEG_UNCHANGED < CHARPOS (startp))
/* Forget any recorded base line for line number display. */
w->base_line_number = 0;
if (!cursor_row_fully_visible_p (w, true, false))
{
clear_glyph_matrix (w->desired_matrix);
last_line_misfit = true;
}
/* Drop through and scroll. */
else
goto done;
}
else
clear_glyph_matrix (w->desired_matrix);
}
try_to_scroll:
/* Redisplay the mode line. Select the buffer properly for that. */
if (!update_mode_line)
{
update_mode_line = true;
w->update_mode_line = true;
}
/* Try to scroll by specified few lines. */
if ((scroll_conservatively
|| emacs_scroll_step
|| temp_scroll_step
|| NUMBERP (BVAR (current_buffer, scroll_up_aggressively))
|| NUMBERP (BVAR (current_buffer, scroll_down_aggressively)))
&& CHARPOS (startp) >= BEGV
&& CHARPOS (startp) <= ZV)
{
/* The function returns -1 if new fonts were loaded, 1 if
successful, 0 if not successful. */
int ss = try_scrolling (window, just_this_one_p,
scroll_conservatively,
emacs_scroll_step,
temp_scroll_step, last_line_misfit);
switch (ss)
{
case SCROLLING_SUCCESS:
goto done;
case SCROLLING_NEED_LARGER_MATRICES:
goto need_larger_matrices;
case SCROLLING_FAILED:
break;
default:
emacs_abort ();
}
}
/* Finally, just choose a place to start which positions point
according to user preferences. */
recenter:
#ifdef GLYPH_DEBUG
debug_method_add (w, "recenter");
#endif
/* Forget any previously recorded base line for line number display. */
if (!buffer_unchanged_p)
w->base_line_number = 0;
/* Determine the window start relative to point. */
init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
it.current_y = it.last_visible_y;
if (centering_position < 0)
{
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
int margin
= scroll_margin > 0
? min (scroll_margin, window_total_lines / 4)
: 0;
ptrdiff_t margin_pos = CHARPOS (startp);
Lisp_Object aggressive;
bool scrolling_up;
/* If there is a scroll margin at the top of the window, find
its character position. */
if (margin
/* Cannot call start_display if startp is not in the
accessible region of the buffer. This can happen when we
have just switched to a different buffer and/or changed
its restriction. In that case, startp is initialized to
the character position 1 (BEGV) because we did not yet
have chance to display the buffer even once. */
&& BEGV <= CHARPOS (startp) && CHARPOS (startp) <= ZV)
{
struct it it1;
void *it1data = NULL;
SAVE_IT (it1, it, it1data);
start_display (&it1, w, startp);
move_it_vertically (&it1, margin * frame_line_height);
margin_pos = IT_CHARPOS (it1);
RESTORE_IT (&it, &it, it1data);
}
scrolling_up = PT > margin_pos;
aggressive =
scrolling_up
? BVAR (current_buffer, scroll_up_aggressively)
: BVAR (current_buffer, scroll_down_aggressively);
if (!MINI_WINDOW_P (w)
&& (scroll_conservatively > SCROLL_LIMIT || NUMBERP (aggressive)))
{
int pt_offset = 0;
/* Setting scroll-conservatively overrides
scroll-*-aggressively. */
if (!scroll_conservatively && NUMBERP (aggressive))
{
double float_amount = XFLOATINT (aggressive);
pt_offset = float_amount * WINDOW_BOX_TEXT_HEIGHT (w);
if (pt_offset == 0 && float_amount > 0)
pt_offset = 1;
if (pt_offset && margin > 0)
margin -= 1;
}
/* Compute how much to move the window start backward from
point so that point will be displayed where the user
wants it. */
if (scrolling_up)
{
centering_position = it.last_visible_y;
if (pt_offset)
centering_position -= pt_offset;
centering_position -=
(frame_line_height * (1 + margin + last_line_misfit)
+ WINDOW_HEADER_LINE_HEIGHT (w));
/* Don't let point enter the scroll margin near top of
the window. */
if (centering_position < margin * frame_line_height)
centering_position = margin * frame_line_height;
}
else
centering_position = margin * frame_line_height + pt_offset;
}
else
/* Set the window start half the height of the window backward
from point. */
centering_position = window_box_height (w) / 2;
}
move_it_vertically_backward (&it, centering_position);
eassert (IT_CHARPOS (it) >= BEGV);
/* The function move_it_vertically_backward may move over more
than the specified y-distance. If it->w is small, e.g. a
mini-buffer window, we may end up in front of the window's
display area. Start displaying at the start of the line
containing PT in this case. */
if (it.current_y <= 0)
{
init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
move_it_vertically_backward (&it, 0);
it.current_y = 0;
}
it.current_x = it.hpos = 0;
/* Set the window start position here explicitly, to avoid an
infinite loop in case the functions in window-scroll-functions
get errors. */
set_marker_both (w->start, Qnil, IT_CHARPOS (it), IT_BYTEPOS (it));
/* Run scroll hooks. */
startp = run_window_scroll_functions (window, it.current.pos);
/* We invoke try_window and try_window_reusing_current_matrix below,
and they manipulate the bidi cache. Save and restore the cache
state of our iterator, so we could continue using it after that. */
itdata = bidi_shelve_cache ();
/* Redisplay the window. */
use_desired_matrix = false;
if (!current_matrix_up_to_date_p
|| windows_or_buffers_changed
|| f->cursor_type_changed
/* Don't use try_window_reusing_current_matrix in this case
because it can have changed the buffer. */
|| !NILP (Vwindow_scroll_functions)
|| !just_this_one_p
|| MINI_WINDOW_P (w)
|| !(used_current_matrix_p
= try_window_reusing_current_matrix (w)))
use_desired_matrix = (try_window (window, startp, 0) == 1);
bidi_unshelve_cache (itdata, false);
/* If new fonts have been loaded (due to fontsets), give up. We
have to start a new redisplay since we need to re-adjust glyph
matrices. */
if (f->fonts_changed)
goto need_larger_matrices;
/* If cursor did not appear assume that the middle of the window is
in the first line of the window. Do it again with the next line.
(Imagine a window of height 100, displaying two lines of height
60. Moving back 50 from it->last_visible_y will end in the first
line.) */
if (w->cursor.vpos < 0)
{
if (w->window_end_valid && PT >= Z - w->window_end_pos)
{
clear_glyph_matrix (w->desired_matrix);
move_it_by_lines (&it, 1);
try_window (window, it.current.pos, 0);
}
else if (PT < IT_CHARPOS (it))
{
clear_glyph_matrix (w->desired_matrix);
move_it_by_lines (&it, -1);
try_window (window, it.current.pos, 0);
}
else if (scroll_conservatively > SCROLL_LIMIT
&& (it.method == GET_FROM_STRING
|| overlay_touches_p (IT_CHARPOS (it)))
&& IT_CHARPOS (it) < ZV)
{
/* If the window starts with a before-string that spans more
than one screen line, using that position to display the
window might fail to bring point into the view, because
start_display will always start by displaying the string,
whereas the code above determines where to set w->start
by the buffer position of the place where it takes screen
coordinates. Try to recover by finding the next screen
line that displays buffer text. */
ptrdiff_t pos0 = IT_CHARPOS (it);
clear_glyph_matrix (w->desired_matrix);
do {
move_it_by_lines (&it, 1);
} while (IT_CHARPOS (it) == pos0);
try_window (window, it.current.pos, 0);
}
else
{
/* Not much we can do about it. */
}
}
/* Consider the following case: Window starts at BEGV, there is
invisible, intangible text at BEGV, so that display starts at
some point START > BEGV. It can happen that we are called with
PT somewhere between BEGV and START. Try to handle that case,
and similar ones. */
if (w->cursor.vpos < 0)
{
/* Prefer the desired matrix to the current matrix, if possible,
in the fallback calculations below. This is because using
the current matrix might completely goof, e.g. if its first
row is after point. */
struct glyph_matrix *matrix =
use_desired_matrix ? w->desired_matrix : w->current_matrix;
/* First, try locating the proper glyph row for PT. */
struct glyph_row *row =
row_containing_pos (w, PT, matrix->rows, NULL, 0);
/* Sometimes point is at the beginning of invisible text that is
before the 1st character displayed in the row. In that case,
row_containing_pos fails to find the row, because no glyphs
with appropriate buffer positions are present in the row.
Therefore, we next try to find the row which shows the 1st
position after the invisible text. */
if (!row)
{
Lisp_Object val =
get_char_property_and_overlay (make_number (PT), Qinvisible,
Qnil, NULL);
if (TEXT_PROP_MEANS_INVISIBLE (val) != 0)
{
ptrdiff_t alt_pos;
Lisp_Object invis_end =
Fnext_single_char_property_change (make_number (PT), Qinvisible,
Qnil, Qnil);
if (NATNUMP (invis_end))
alt_pos = XFASTINT (invis_end);
else
alt_pos = ZV;
row = row_containing_pos (w, alt_pos, matrix->rows, NULL, 0);
}
}
/* Finally, fall back on the first row of the window after the
header line (if any). This is slightly better than not
displaying the cursor at all. */
if (!row)
{
row = matrix->rows;
if (row->mode_line_p)
++row;
}
set_cursor_from_row (w, row, matrix, 0, 0, 0, 0);
}
if (!cursor_row_fully_visible_p (w, false, false))
{
/* If vscroll is enabled, disable it and try again. */
if (w->vscroll)
{
w->vscroll = 0;
clear_glyph_matrix (w->desired_matrix);
goto recenter;
}
/* Users who set scroll-conservatively to a large number want
point just above/below the scroll margin. If we ended up
with point's row partially visible, move the window start to
make that row fully visible and out of the margin. */
if (scroll_conservatively > SCROLL_LIMIT)
{
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
int margin =
scroll_margin > 0
? min (scroll_margin, window_total_lines / 4)
: 0;
bool move_down = w->cursor.vpos >= window_total_lines / 2;
move_it_by_lines (&it, move_down ? margin + 1 : -(margin + 1));
clear_glyph_matrix (w->desired_matrix);
if (1 == try_window (window, it.current.pos,
TRY_WINDOW_CHECK_MARGINS))
goto done;
}
/* If centering point failed to make the whole line visible,
put point at the top instead. That has to make the whole line
visible, if it can be done. */
if (centering_position == 0)
goto done;
clear_glyph_matrix (w->desired_matrix);
centering_position = 0;
goto recenter;
}
done:
SET_TEXT_POS_FROM_MARKER (startp, w->start);
w->start_at_line_beg = (CHARPOS (startp) == BEGV
|| FETCH_BYTE (BYTEPOS (startp) - 1) == '\n');
/* Display the mode line, if we must. */
if ((update_mode_line
/* If window not full width, must redo its mode line
if (a) the window to its side is being redone and
(b) we do a frame-based redisplay. This is a consequence
of how inverted lines are drawn in frame-based redisplay. */
|| (!just_this_one_p
&& !FRAME_WINDOW_P (f)
&& !WINDOW_FULL_WIDTH_P (w))
/* Line number to display. */
|| w->base_line_pos > 0
/* Column number is displayed and different from the one displayed. */
|| (w->column_number_displayed != -1
&& (w->column_number_displayed != current_column ())))
/* This means that the window has a mode line. */
&& (WINDOW_WANTS_MODELINE_P (w)
|| WINDOW_WANTS_HEADER_LINE_P (w)))
{
display_mode_lines (w);
/* If mode line height has changed, arrange for a thorough
immediate redisplay using the correct mode line height. */
if (WINDOW_WANTS_MODELINE_P (w)
&& CURRENT_MODE_LINE_HEIGHT (w) != DESIRED_MODE_LINE_HEIGHT (w))
{
f->fonts_changed = true;
w->mode_line_height = -1;
MATRIX_MODE_LINE_ROW (w->current_matrix)->height
= DESIRED_MODE_LINE_HEIGHT (w);
}
/* If header line height has changed, arrange for a thorough
immediate redisplay using the correct header line height. */
if (WINDOW_WANTS_HEADER_LINE_P (w)
&& CURRENT_HEADER_LINE_HEIGHT (w) != DESIRED_HEADER_LINE_HEIGHT (w))
{
f->fonts_changed = true;
w->header_line_height = -1;
MATRIX_HEADER_LINE_ROW (w->current_matrix)->height
= DESIRED_HEADER_LINE_HEIGHT (w);
}
if (f->fonts_changed)
goto need_larger_matrices;
}
if (!line_number_displayed && w->base_line_pos != -1)
{
w->base_line_pos = 0;
w->base_line_number = 0;
}
finish_menu_bars:
/* When we reach a frame's selected window, redo the frame's menu
bar and the frame's title. */
if (update_mode_line
&& EQ (FRAME_SELECTED_WINDOW (f), window))
{
bool redisplay_menu_p;
if (FRAME_WINDOW_P (f))
{
#if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) \
|| defined (HAVE_NS) || defined (USE_GTK)
redisplay_menu_p = FRAME_EXTERNAL_MENU_BAR (f);
#else
redisplay_menu_p = FRAME_MENU_BAR_LINES (f) > 0;
#endif
}
else
redisplay_menu_p = FRAME_MENU_BAR_LINES (f) > 0;
if (redisplay_menu_p)
display_menu_bar (w);
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (f))
{
#if defined (USE_GTK) || defined (HAVE_NS)
if (FRAME_EXTERNAL_TOOL_BAR (f))
redisplay_tool_bar (f);
#else
if (WINDOWP (f->tool_bar_window)
&& (FRAME_TOOL_BAR_LINES (f) > 0
|| !NILP (Vauto_resize_tool_bars))
&& redisplay_tool_bar (f))
ignore_mouse_drag_p = true;
#endif
}
x_consider_frame_title (w->frame);
#endif
}
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (f)
&& update_window_fringes (w, (just_this_one_p
|| (!used_current_matrix_p && !overlay_arrow_seen)
|| w->pseudo_window_p)))
{
update_begin (f);
block_input ();
if (draw_window_fringes (w, true))
{
if (WINDOW_RIGHT_DIVIDER_WIDTH (w))
x_draw_right_divider (w);
else
x_draw_vertical_border (w);
}
unblock_input ();
update_end (f);
}
if (WINDOW_BOTTOM_DIVIDER_WIDTH (w))
x_draw_bottom_divider (w);
#endif /* HAVE_WINDOW_SYSTEM */
/* We go to this label, with fonts_changed set, if it is
necessary to try again using larger glyph matrices.
We have to redeem the scroll bar even in this case,
because the loop in redisplay_internal expects that. */
need_larger_matrices:
;
finish_scroll_bars:
if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w) || WINDOW_HAS_HORIZONTAL_SCROLL_BAR (w))
{
if (WINDOW_HAS_VERTICAL_SCROLL_BAR (w))
/* Set the thumb's position and size. */
set_vertical_scroll_bar (w);
if (WINDOW_HAS_HORIZONTAL_SCROLL_BAR (w))
/* Set the thumb's position and size. */
set_horizontal_scroll_bar (w);
/* Note that we actually used the scroll bar attached to this
window, so it shouldn't be deleted at the end of redisplay. */
if (FRAME_TERMINAL (f)->redeem_scroll_bar_hook)
(*FRAME_TERMINAL (f)->redeem_scroll_bar_hook) (w);
}
/* Restore current_buffer and value of point in it. The window
update may have changed the buffer, so first make sure `opoint'
is still valid (Bug#6177). */
if (CHARPOS (opoint) < BEGV)
TEMP_SET_PT_BOTH (BEGV, BEGV_BYTE);
else if (CHARPOS (opoint) > ZV)
TEMP_SET_PT_BOTH (Z, Z_BYTE);
else
TEMP_SET_PT_BOTH (CHARPOS (opoint), BYTEPOS (opoint));
set_buffer_internal_1 (old);
/* Avoid an abort in TEMP_SET_PT_BOTH if the buffer has become
shorter. This can be caused by log truncation in *Messages*. */
if (CHARPOS (lpoint) <= ZV)
TEMP_SET_PT_BOTH (CHARPOS (lpoint), BYTEPOS (lpoint));
unbind_to (count, Qnil);
}
/* Build the complete desired matrix of WINDOW with a window start
buffer position POS.
Value is 1 if successful. It is zero if fonts were loaded during
redisplay which makes re-adjusting glyph matrices necessary, and -1
if point would appear in the scroll margins.
(We check the former only if TRY_WINDOW_IGNORE_FONTS_CHANGE is
unset in FLAGS, and the latter only if TRY_WINDOW_CHECK_MARGINS is
set in FLAGS.) */
int
try_window (Lisp_Object window, struct text_pos pos, int flags)
{
struct window *w = XWINDOW (window);
struct it it;
struct glyph_row *last_text_row = NULL;
struct frame *f = XFRAME (w->frame);
int frame_line_height = default_line_pixel_height (w);
/* Make POS the new window start. */
set_marker_both (w->start, Qnil, CHARPOS (pos), BYTEPOS (pos));
/* Mark cursor position as unknown. No overlay arrow seen. */
w->cursor.vpos = -1;
overlay_arrow_seen = false;
/* Initialize iterator and info to start at POS. */
start_display (&it, w, pos);
it.glyph_row->reversed_p = false;
/* Display all lines of W. */
while (it.current_y < it.last_visible_y)
{
if (display_line (&it))
last_text_row = it.glyph_row - 1;
if (f->fonts_changed && !(flags & TRY_WINDOW_IGNORE_FONTS_CHANGE))
return 0;
}
/* Don't let the cursor end in the scroll margins. */
if ((flags & TRY_WINDOW_CHECK_MARGINS)
&& !MINI_WINDOW_P (w))
{
int this_scroll_margin;
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (f) / frame_line_height;
if (scroll_margin > 0)
{
this_scroll_margin = min (scroll_margin, window_total_lines / 4);
this_scroll_margin *= frame_line_height;
}
else
this_scroll_margin = 0;
if ((w->cursor.y >= 0 /* not vscrolled */
&& w->cursor.y < this_scroll_margin
&& CHARPOS (pos) > BEGV
&& IT_CHARPOS (it) < ZV)
/* rms: considering make_cursor_line_fully_visible_p here
seems to give wrong results. We don't want to recenter
when the last line is partly visible, we want to allow
that case to be handled in the usual way. */
|| w->cursor.y > it.last_visible_y - this_scroll_margin - 1)
{
w->cursor.vpos = -1;
clear_glyph_matrix (w->desired_matrix);
return -1;
}
}
/* If bottom moved off end of frame, change mode line percentage. */
if (w->window_end_pos <= 0 && Z != IT_CHARPOS (it))
w->update_mode_line = true;
/* Set window_end_pos to the offset of the last character displayed
on the window from the end of current_buffer. Set
window_end_vpos to its row number. */
if (last_text_row)
{
eassert (MATRIX_ROW_DISPLAYS_TEXT_P (last_text_row));
adjust_window_ends (w, last_text_row, false);
eassert
(MATRIX_ROW_DISPLAYS_TEXT_P (MATRIX_ROW (w->desired_matrix,
w->window_end_vpos)));
}
else
{
w->window_end_bytepos = Z_BYTE - ZV_BYTE;
w->window_end_pos = Z - ZV;
w->window_end_vpos = 0;
}
/* But that is not valid info until redisplay finishes. */
w->window_end_valid = false;
return 1;
}
\f
/************************************************************************
Window redisplay reusing current matrix when buffer has not changed
************************************************************************/
/* Try redisplay of window W showing an unchanged buffer with a
different window start than the last time it was displayed by
reusing its current matrix. Value is true if successful.
W->start is the new window start. */
static bool
try_window_reusing_current_matrix (struct window *w)
{
struct frame *f = XFRAME (w->frame);
struct glyph_row *bottom_row;
struct it it;
struct run run;
struct text_pos start, new_start;
int nrows_scrolled, i;
struct glyph_row *last_text_row;
struct glyph_row *last_reused_text_row;
struct glyph_row *start_row;
int start_vpos, min_y, max_y;
#ifdef GLYPH_DEBUG
if (inhibit_try_window_reusing)
return false;
#endif
if (/* This function doesn't handle terminal frames. */
!FRAME_WINDOW_P (f)
/* Don't try to reuse the display if windows have been split
or such. */
|| windows_or_buffers_changed
|| f->cursor_type_changed)
return false;
/* Can't do this if showing trailing whitespace. */
if (!NILP (Vshow_trailing_whitespace))
return false;
/* If top-line visibility has changed, give up. */
if (WINDOW_WANTS_HEADER_LINE_P (w)
!= MATRIX_HEADER_LINE_ROW (w->current_matrix)->mode_line_p)
return false;
/* Give up if old or new display is scrolled vertically. We could
make this function handle this, but right now it doesn't. */
start_row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
if (w->vscroll || MATRIX_ROW_PARTIALLY_VISIBLE_P (w, start_row))
return false;
/* The variable new_start now holds the new window start. The old
start `start' can be determined from the current matrix. */
SET_TEXT_POS_FROM_MARKER (new_start, w->start);
start = start_row->minpos;
start_vpos = MATRIX_ROW_VPOS (start_row, w->current_matrix);
/* Clear the desired matrix for the display below. */
clear_glyph_matrix (w->desired_matrix);
if (CHARPOS (new_start) <= CHARPOS (start))
{
/* Don't use this method if the display starts with an ellipsis
displayed for invisible text. It's not easy to handle that case
below, and it's certainly not worth the effort since this is
not a frequent case. */
if (in_ellipses_for_invisible_text_p (&start_row->start, w))
return false;
IF_DEBUG (debug_method_add (w, "twu1"));
/* Display up to a row that can be reused. The variable
last_text_row is set to the last row displayed that displays
text. Note that it.vpos == 0 if or if not there is a
header-line; it's not the same as the MATRIX_ROW_VPOS! */
start_display (&it, w, new_start);
w->cursor.vpos = -1;
last_text_row = last_reused_text_row = NULL;
while (it.current_y < it.last_visible_y && !f->fonts_changed)
{
/* If we have reached into the characters in the START row,
that means the line boundaries have changed. So we
can't start copying with the row START. Maybe it will
work to start copying with the following row. */
while (IT_CHARPOS (it) > CHARPOS (start))
{
/* Advance to the next row as the "start". */
start_row++;
start = start_row->minpos;
/* If there are no more rows to try, or just one, give up. */
if (start_row == MATRIX_MODE_LINE_ROW (w->current_matrix) - 1
|| w->vscroll || MATRIX_ROW_PARTIALLY_VISIBLE_P (w, start_row)
|| CHARPOS (start) == ZV)
{
clear_glyph_matrix (w->desired_matrix);
return false;
}
start_vpos = MATRIX_ROW_VPOS (start_row, w->current_matrix);
}
/* If we have reached alignment, we can copy the rest of the
rows. */
if (IT_CHARPOS (it) == CHARPOS (start)
/* Don't accept "alignment" inside a display vector,
since start_row could have started in the middle of
that same display vector (thus their character
positions match), and we have no way of telling if
that is the case. */
&& it.current.dpvec_index < 0)
break;
it.glyph_row->reversed_p = false;
if (display_line (&it))
last_text_row = it.glyph_row - 1;
}
/* A value of current_y < last_visible_y means that we stopped
at the previous window start, which in turn means that we
have at least one reusable row. */
if (it.current_y < it.last_visible_y)
{
struct glyph_row *row;
/* IT.vpos always starts from 0; it counts text lines. */
nrows_scrolled = it.vpos - (start_row - MATRIX_FIRST_TEXT_ROW (w->current_matrix));
/* Find PT if not already found in the lines displayed. */
if (w->cursor.vpos < 0)
{
int dy = it.current_y - start_row->y;
row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
row = row_containing_pos (w, PT, row, NULL, dy);
if (row)
set_cursor_from_row (w, row, w->current_matrix, 0, 0,
dy, nrows_scrolled);
else
{
clear_glyph_matrix (w->desired_matrix);
return false;
}
}
/* Scroll the display. Do it before the current matrix is
changed. The problem here is that update has not yet
run, i.e. part of the current matrix is not up to date.
scroll_run_hook will clear the cursor, and use the
current matrix to get the height of the row the cursor is
in. */
run.current_y = start_row->y;
run.desired_y = it.current_y;
run.height = it.last_visible_y - it.current_y;
if (run.height > 0 && run.current_y != run.desired_y)
{
update_begin (f);
FRAME_RIF (f)->update_window_begin_hook (w);
FRAME_RIF (f)->clear_window_mouse_face (w);
FRAME_RIF (f)->scroll_run_hook (w, &run);
FRAME_RIF (f)->update_window_end_hook (w, false, false);
update_end (f);
}
/* Shift current matrix down by nrows_scrolled lines. */
bottom_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w);
rotate_matrix (w->current_matrix,
start_vpos,
MATRIX_ROW_VPOS (bottom_row, w->current_matrix),
nrows_scrolled);
/* Disable lines that must be updated. */
for (i = 0; i < nrows_scrolled; ++i)
(start_row + i)->enabled_p = false;
/* Re-compute Y positions. */
min_y = WINDOW_HEADER_LINE_HEIGHT (w);
max_y = it.last_visible_y;
for (row = start_row + nrows_scrolled;
row < bottom_row;
++row)
{
row->y = it.current_y;
row->visible_height = row->height;
if (row->y < min_y)
row->visible_height -= min_y - row->y;
if (row->y + row->height > max_y)
row->visible_height -= row->y + row->height - max_y;
if (row->fringe_bitmap_periodic_p)
row->redraw_fringe_bitmaps_p = true;
it.current_y += row->height;
if (MATRIX_ROW_DISPLAYS_TEXT_P (row))
last_reused_text_row = row;
if (MATRIX_ROW_BOTTOM_Y (row) >= it.last_visible_y)
break;
}
/* Disable lines in the current matrix which are now
below the window. */
for (++row; row < bottom_row; ++row)
row->enabled_p = row->mode_line_p = false;
}
/* Update window_end_pos etc.; last_reused_text_row is the last
reused row from the current matrix containing text, if any.
The value of last_text_row is the last displayed line
containing text. */
if (last_reused_text_row)
adjust_window_ends (w, last_reused_text_row, true);
else if (last_text_row)
adjust_window_ends (w, last_text_row, false);
else
{
/* This window must be completely empty. */
w->window_end_bytepos = Z_BYTE - ZV_BYTE;
w->window_end_pos = Z - ZV;
w->window_end_vpos = 0;
}
w->window_end_valid = false;
/* Update hint: don't try scrolling again in update_window. */
w->desired_matrix->no_scrolling_p = true;
#ifdef GLYPH_DEBUG
debug_method_add (w, "try_window_reusing_current_matrix 1");
#endif
return true;
}
else if (CHARPOS (new_start) > CHARPOS (start))
{
struct glyph_row *pt_row, *row;
struct glyph_row *first_reusable_row;
struct glyph_row *first_row_to_display;
int dy;
int yb = window_text_bottom_y (w);
/* Find the row starting at new_start, if there is one. Don't
reuse a partially visible line at the end. */
first_reusable_row = start_row;
while (first_reusable_row->enabled_p
&& MATRIX_ROW_BOTTOM_Y (first_reusable_row) < yb
&& (MATRIX_ROW_START_CHARPOS (first_reusable_row)
< CHARPOS (new_start)))
++first_reusable_row;
/* Give up if there is no row to reuse. */
if (MATRIX_ROW_BOTTOM_Y (first_reusable_row) >= yb
|| !first_reusable_row->enabled_p
|| (MATRIX_ROW_START_CHARPOS (first_reusable_row)
!= CHARPOS (new_start)))
return false;
/* We can reuse fully visible rows beginning with
first_reusable_row to the end of the window. Set
first_row_to_display to the first row that cannot be reused.
Set pt_row to the row containing point, if there is any. */
pt_row = NULL;
for (first_row_to_display = first_reusable_row;
MATRIX_ROW_BOTTOM_Y (first_row_to_display) < yb;
++first_row_to_display)
{
if (PT >= MATRIX_ROW_START_CHARPOS (first_row_to_display)
&& (PT < MATRIX_ROW_END_CHARPOS (first_row_to_display)
|| (PT == MATRIX_ROW_END_CHARPOS (first_row_to_display)
&& first_row_to_display->ends_at_zv_p
&& pt_row == NULL)))
pt_row = first_row_to_display;
}
/* Start displaying at the start of first_row_to_display. */
eassert (first_row_to_display->y < yb);
init_to_row_start (&it, w, first_row_to_display);
nrows_scrolled = (MATRIX_ROW_VPOS (first_reusable_row, w->current_matrix)
- start_vpos);
it.vpos = (MATRIX_ROW_VPOS (first_row_to_display, w->current_matrix)
- nrows_scrolled);
it.current_y = (first_row_to_display->y - first_reusable_row->y
+ WINDOW_HEADER_LINE_HEIGHT (w));
/* Display lines beginning with first_row_to_display in the
desired matrix. Set last_text_row to the last row displayed
that displays text. */
it.glyph_row = MATRIX_ROW (w->desired_matrix, it.vpos);
if (pt_row == NULL)
w->cursor.vpos = -1;
last_text_row = NULL;
while (it.current_y < it.last_visible_y && !f->fonts_changed)
if (display_line (&it))
last_text_row = it.glyph_row - 1;
/* If point is in a reused row, adjust y and vpos of the cursor
position. */
if (pt_row)
{
w->cursor.vpos -= nrows_scrolled;
w->cursor.y -= first_reusable_row->y - start_row->y;
}
/* Give up if point isn't in a row displayed or reused. (This
also handles the case where w->cursor.vpos < nrows_scrolled
after the calls to display_line, which can happen with scroll
margins. See bug#1295.) */
if (w->cursor.vpos < 0)
{
clear_glyph_matrix (w->desired_matrix);
return false;
}
/* Scroll the display. */
run.current_y = first_reusable_row->y;
run.desired_y = WINDOW_HEADER_LINE_HEIGHT (w);
run.height = it.last_visible_y - run.current_y;
dy = run.current_y - run.desired_y;
if (run.height)
{
update_begin (f);
FRAME_RIF (f)->update_window_begin_hook (w);
FRAME_RIF (f)->clear_window_mouse_face (w);
FRAME_RIF (f)->scroll_run_hook (w, &run);
FRAME_RIF (f)->update_window_end_hook (w, false, false);
update_end (f);
}
/* Adjust Y positions of reused rows. */
bottom_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w);
min_y = WINDOW_HEADER_LINE_HEIGHT (w);
max_y = it.last_visible_y;
for (row = first_reusable_row; row < first_row_to_display; ++row)
{
row->y -= dy;
row->visible_height = row->height;
if (row->y < min_y)
row->visible_height -= min_y - row->y;
if (row->y + row->height > max_y)
row->visible_height -= row->y + row->height - max_y;
if (row->fringe_bitmap_periodic_p)
row->redraw_fringe_bitmaps_p = true;
}
/* Scroll the current matrix. */
eassert (nrows_scrolled > 0);
rotate_matrix (w->current_matrix,
start_vpos,
MATRIX_ROW_VPOS (bottom_row, w->current_matrix),
-nrows_scrolled);
/* Disable rows not reused. */
for (row -= nrows_scrolled; row < bottom_row; ++row)
row->enabled_p = false;
/* Point may have moved to a different line, so we cannot assume that
the previous cursor position is valid; locate the correct row. */
if (pt_row)
{
for (row = MATRIX_ROW (w->current_matrix, w->cursor.vpos);
row < bottom_row
&& PT >= MATRIX_ROW_END_CHARPOS (row)
&& !row->ends_at_zv_p;
row++)
{
w->cursor.vpos++;
w->cursor.y = row->y;
}
if (row < bottom_row)
{
/* Can't simply scan the row for point with
bidi-reordered glyph rows. Let set_cursor_from_row
figure out where to put the cursor, and if it fails,
give up. */
if (!NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering)))
{
if (!set_cursor_from_row (w, row, w->current_matrix,
0, 0, 0, 0))
{
clear_glyph_matrix (w->desired_matrix);
return false;
}
}
else
{
struct glyph *glyph = row->glyphs[TEXT_AREA] + w->cursor.hpos;
struct glyph *end = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA];
for (; glyph < end
&& (!BUFFERP (glyph->object)
|| glyph->charpos < PT);
glyph++)
{
w->cursor.hpos++;
w->cursor.x += glyph->pixel_width;
}
}
}
}
/* Adjust window end. A null value of last_text_row means that
the window end is in reused rows which in turn means that
only its vpos can have changed. */
if (last_text_row)
adjust_window_ends (w, last_text_row, false);
else
w->window_end_vpos -= nrows_scrolled;
w->window_end_valid = false;
w->desired_matrix->no_scrolling_p = true;
#ifdef GLYPH_DEBUG
debug_method_add (w, "try_window_reusing_current_matrix 2");
#endif
return true;
}
return false;
}
\f
/************************************************************************
Window redisplay reusing current matrix when buffer has changed
************************************************************************/
static struct glyph_row *find_last_unchanged_at_beg_row (struct window *);
static struct glyph_row *find_first_unchanged_at_end_row (struct window *,
ptrdiff_t *, ptrdiff_t *);
static struct glyph_row *
find_last_row_displaying_text (struct glyph_matrix *, struct it *,
struct glyph_row *);
/* Return the last row in MATRIX displaying text. If row START is
non-null, start searching with that row. IT gives the dimensions
of the display. Value is null if matrix is empty; otherwise it is
a pointer to the row found. */
static struct glyph_row *
find_last_row_displaying_text (struct glyph_matrix *matrix, struct it *it,
struct glyph_row *start)
{
struct glyph_row *row, *row_found;
/* Set row_found to the last row in IT->w's current matrix
displaying text. The loop looks funny but think of partially
visible lines. */
row_found = NULL;
row = start ? start : MATRIX_FIRST_TEXT_ROW (matrix);
while (MATRIX_ROW_DISPLAYS_TEXT_P (row))
{
eassert (row->enabled_p);
row_found = row;
if (MATRIX_ROW_BOTTOM_Y (row) >= it->last_visible_y)
break;
++row;
}
return row_found;
}
/* Return the last row in the current matrix of W that is not affected
by changes at the start of current_buffer that occurred since W's
current matrix was built. Value is null if no such row exists.
BEG_UNCHANGED us the number of characters unchanged at the start of
current_buffer. BEG + BEG_UNCHANGED is the buffer position of the
first changed character in current_buffer. Characters at positions <
BEG + BEG_UNCHANGED are at the same buffer positions as they were
when the current matrix was built. */
static struct glyph_row *
find_last_unchanged_at_beg_row (struct window *w)
{
ptrdiff_t first_changed_pos = BEG + BEG_UNCHANGED;
struct glyph_row *row;
struct glyph_row *row_found = NULL;
int yb = window_text_bottom_y (w);
/* Find the last row displaying unchanged text. */
for (row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
MATRIX_ROW_DISPLAYS_TEXT_P (row)
&& MATRIX_ROW_START_CHARPOS (row) < first_changed_pos;
++row)
{
if (/* If row ends before first_changed_pos, it is unchanged,
except in some case. */
MATRIX_ROW_END_CHARPOS (row) <= first_changed_pos
/* When row ends in ZV and we write at ZV it is not
unchanged. */
&& !row->ends_at_zv_p
/* When first_changed_pos is the end of a continued line,
row is not unchanged because it may be no longer
continued. */
&& !(MATRIX_ROW_END_CHARPOS (row) == first_changed_pos
&& (row->continued_p
|| row->exact_window_width_line_p))
/* If ROW->end is beyond ZV, then ROW->end is outdated and
needs to be recomputed, so don't consider this row as
unchanged. This happens when the last line was
bidi-reordered and was killed immediately before this
redisplay cycle. In that case, ROW->end stores the
buffer position of the first visual-order character of
the killed text, which is now beyond ZV. */
&& CHARPOS (row->end.pos) <= ZV)
row_found = row;
/* Stop if last visible row. */
if (MATRIX_ROW_BOTTOM_Y (row) >= yb)
break;
}
return row_found;
}
/* Find the first glyph row in the current matrix of W that is not
affected by changes at the end of current_buffer since the
time W's current matrix was built.
Return in *DELTA the number of chars by which buffer positions in
unchanged text at the end of current_buffer must be adjusted.
Return in *DELTA_BYTES the corresponding number of bytes.
Value is null if no such row exists, i.e. all rows are affected by
changes. */
static struct glyph_row *
find_first_unchanged_at_end_row (struct window *w,
ptrdiff_t *delta, ptrdiff_t *delta_bytes)
{
struct glyph_row *row;
struct glyph_row *row_found = NULL;
*delta = *delta_bytes = 0;
/* Display must not have been paused, otherwise the current matrix
is not up to date. */
eassert (w->window_end_valid);
/* A value of window_end_pos >= END_UNCHANGED means that the window
end is in the range of changed text. If so, there is no
unchanged row at the end of W's current matrix. */
if (w->window_end_pos >= END_UNCHANGED)
return NULL;
/* Set row to the last row in W's current matrix displaying text. */
row = MATRIX_ROW (w->current_matrix, w->window_end_vpos);
/* If matrix is entirely empty, no unchanged row exists. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (row))
{
/* The value of row is the last glyph row in the matrix having a
meaningful buffer position in it. The end position of row
corresponds to window_end_pos. This allows us to translate
buffer positions in the current matrix to current buffer
positions for characters not in changed text. */
ptrdiff_t Z_old =
MATRIX_ROW_END_CHARPOS (row) + w->window_end_pos;
ptrdiff_t Z_BYTE_old =
MATRIX_ROW_END_BYTEPOS (row) + w->window_end_bytepos;
ptrdiff_t last_unchanged_pos, last_unchanged_pos_old;
struct glyph_row *first_text_row
= MATRIX_FIRST_TEXT_ROW (w->current_matrix);
*delta = Z - Z_old;
*delta_bytes = Z_BYTE - Z_BYTE_old;
/* Set last_unchanged_pos to the buffer position of the last
character in the buffer that has not been changed. Z is the
index + 1 of the last character in current_buffer, i.e. by
subtracting END_UNCHANGED we get the index of the last
unchanged character, and we have to add BEG to get its buffer
position. */
last_unchanged_pos = Z - END_UNCHANGED + BEG;
last_unchanged_pos_old = last_unchanged_pos - *delta;
/* Search backward from ROW for a row displaying a line that
starts at a minimum position >= last_unchanged_pos_old. */
for (; row > first_text_row; --row)
{
/* This used to abort, but it can happen.
It is ok to just stop the search instead here. KFS. */
if (!row->enabled_p || !MATRIX_ROW_DISPLAYS_TEXT_P (row))
break;
if (MATRIX_ROW_START_CHARPOS (row) >= last_unchanged_pos_old)
row_found = row;
}
}
eassert (!row_found || MATRIX_ROW_DISPLAYS_TEXT_P (row_found));
return row_found;
}
/* Make sure that glyph rows in the current matrix of window W
reference the same glyph memory as corresponding rows in the
frame's frame matrix. This function is called after scrolling W's
current matrix on a terminal frame in try_window_id and
try_window_reusing_current_matrix. */
static void
sync_frame_with_window_matrix_rows (struct window *w)
{
struct frame *f = XFRAME (w->frame);
struct glyph_row *window_row, *window_row_end, *frame_row;
/* Preconditions: W must be a leaf window and full-width. Its frame
must have a frame matrix. */
eassert (BUFFERP (w->contents));
eassert (WINDOW_FULL_WIDTH_P (w));
eassert (!FRAME_WINDOW_P (f));
/* If W is a full-width window, glyph pointers in W's current matrix
have, by definition, to be the same as glyph pointers in the
corresponding frame matrix. Note that frame matrices have no
marginal areas (see build_frame_matrix). */
window_row = w->current_matrix->rows;
window_row_end = window_row + w->current_matrix->nrows;
frame_row = f->current_matrix->rows + WINDOW_TOP_EDGE_LINE (w);
while (window_row < window_row_end)
{
struct glyph *start = window_row->glyphs[LEFT_MARGIN_AREA];
struct glyph *end = window_row->glyphs[LAST_AREA];
frame_row->glyphs[LEFT_MARGIN_AREA] = start;
frame_row->glyphs[TEXT_AREA] = start;
frame_row->glyphs[RIGHT_MARGIN_AREA] = end;
frame_row->glyphs[LAST_AREA] = end;
/* Disable frame rows whose corresponding window rows have
been disabled in try_window_id. */
if (!window_row->enabled_p)
frame_row->enabled_p = false;
++window_row, ++frame_row;
}
}
/* Find the glyph row in window W containing CHARPOS. Consider all
rows between START and END (not inclusive). END null means search
all rows to the end of the display area of W. Value is the row
containing CHARPOS or null. */
struct glyph_row *
row_containing_pos (struct window *w, ptrdiff_t charpos,
struct glyph_row *start, struct glyph_row *end, int dy)
{
struct glyph_row *row = start;
struct glyph_row *best_row = NULL;
ptrdiff_t mindif = BUF_ZV (XBUFFER (w->contents)) + 1;
int last_y;
/* If we happen to start on a header-line, skip that. */
if (row->mode_line_p)
++row;
if ((end && row >= end) || !row->enabled_p)
return NULL;
last_y = window_text_bottom_y (w) - dy;
while (true)
{
/* Give up if we have gone too far. */
if ((end && row >= end) || !row->enabled_p)
return NULL;
/* This formerly returned if they were equal.
I think that both quantities are of a "last plus one" type;
if so, when they are equal, the row is within the screen. -- rms. */
if (MATRIX_ROW_BOTTOM_Y (row) > last_y)
return NULL;
/* If it is in this row, return this row. */
if (! (MATRIX_ROW_END_CHARPOS (row) < charpos
|| (MATRIX_ROW_END_CHARPOS (row) == charpos
/* The end position of a row equals the start
position of the next row. If CHARPOS is there, we
would rather consider it displayed in the next
line, except when this line ends in ZV. */
&& !row_for_charpos_p (row, charpos)))
&& charpos >= MATRIX_ROW_START_CHARPOS (row))
{
struct glyph *g;
if (NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering))
|| (!best_row && !row->continued_p))
return row;
/* In bidi-reordered rows, there could be several rows whose
edges surround CHARPOS, all of these rows belonging to
the same continued line. We need to find the row which
fits CHARPOS the best. */
for (g = row->glyphs[TEXT_AREA];
g < row->glyphs[TEXT_AREA] + row->used[TEXT_AREA];
g++)
{
if (!STRINGP (g->object))
{
if (g->charpos > 0 && eabs (g->charpos - charpos) < mindif)
{
mindif = eabs (g->charpos - charpos);
best_row = row;
/* Exact match always wins. */
if (mindif == 0)
return best_row;
}
}
}
}
else if (best_row && !row->continued_p)
return best_row;
++row;
}
}
/* Try to redisplay window W by reusing its existing display. W's
current matrix must be up to date when this function is called,
i.e., window_end_valid must be true.
Value is
>= 1 if successful, i.e. display has been updated
specifically:
1 means the changes were in front of a newline that precedes
the window start, and the whole current matrix was reused
2 means the changes were after the last position displayed
in the window, and the whole current matrix was reused
3 means portions of the current matrix were reused, while
some of the screen lines were redrawn
-1 if redisplay with same window start is known not to succeed
0 if otherwise unsuccessful
The following steps are performed:
1. Find the last row in the current matrix of W that is not
affected by changes at the start of current_buffer. If no such row
is found, give up.
2. Find the first row in W's current matrix that is not affected by
changes at the end of current_buffer. Maybe there is no such row.
3. Display lines beginning with the row + 1 found in step 1 to the
row found in step 2 or, if step 2 didn't find a row, to the end of
the window.
4. If cursor is not known to appear on the window, give up.
5. If display stopped at the row found in step 2, scroll the
display and current matrix as needed.
6. Maybe display some lines at the end of W, if we must. This can
happen under various circumstances, like a partially visible line
becoming fully visible, or because newly displayed lines are displayed
in smaller font sizes.
7. Update W's window end information. */
static int
try_window_id (struct window *w)
{
struct frame *f = XFRAME (w->frame);
struct glyph_matrix *current_matrix = w->current_matrix;
struct glyph_matrix *desired_matrix = w->desired_matrix;
struct glyph_row *last_unchanged_at_beg_row;
struct glyph_row *first_unchanged_at_end_row;
struct glyph_row *row;
struct glyph_row *bottom_row;
int bottom_vpos;
struct it it;
ptrdiff_t delta = 0, delta_bytes = 0, stop_pos;
int dvpos, dy;
struct text_pos start_pos;
struct run run;
int first_unchanged_at_end_vpos = 0;
struct glyph_row *last_text_row, *last_text_row_at_end;
struct text_pos start;
ptrdiff_t first_changed_charpos, last_changed_charpos;
#ifdef GLYPH_DEBUG
if (inhibit_try_window_id)
return 0;
#endif
/* This is handy for debugging. */
#if false
#define GIVE_UP(X) \
do { \
TRACE ((stderr, "try_window_id give up %d\n", (X))); \
return 0; \
} while (false)
#else
#define GIVE_UP(X) return 0
#endif
SET_TEXT_POS_FROM_MARKER (start, w->start);
/* Don't use this for mini-windows because these can show
messages and mini-buffers, and we don't handle that here. */
if (MINI_WINDOW_P (w))
GIVE_UP (1);
/* This flag is used to prevent redisplay optimizations. */
if (windows_or_buffers_changed || f->cursor_type_changed)
GIVE_UP (2);
/* This function's optimizations cannot be used if overlays have
changed in the buffer displayed by the window, so give up if they
have. */
if (w->last_overlay_modified != OVERLAY_MODIFF)
GIVE_UP (200);
/* Verify that narrowing has not changed.
Also verify that we were not told to prevent redisplay optimizations.
It would be nice to further
reduce the number of cases where this prevents try_window_id. */
if (current_buffer->clip_changed
|| current_buffer->prevent_redisplay_optimizations_p)
GIVE_UP (3);
/* Window must either use window-based redisplay or be full width. */
if (!FRAME_WINDOW_P (f)
&& (!FRAME_LINE_INS_DEL_OK (f)
|| !WINDOW_FULL_WIDTH_P (w)))
GIVE_UP (4);
/* Give up if point is known NOT to appear in W. */
if (PT < CHARPOS (start))
GIVE_UP (5);
/* Another way to prevent redisplay optimizations. */
if (w->last_modified == 0)
GIVE_UP (6);
/* Verify that window is not hscrolled. */
if (w->hscroll != 0)
GIVE_UP (7);
/* Verify that display wasn't paused. */
if (!w->window_end_valid)
GIVE_UP (8);
/* Likewise if highlighting trailing whitespace. */
if (!NILP (Vshow_trailing_whitespace))
GIVE_UP (11);
/* Can't use this if overlay arrow position and/or string have
changed. */
if (overlay_arrows_changed_p ())
GIVE_UP (12);
/* When word-wrap is on, adding a space to the first word of a
wrapped line can change the wrap position, altering the line
above it. It might be worthwhile to handle this more
intelligently, but for now just redisplay from scratch. */
if (!NILP (BVAR (XBUFFER (w->contents), word_wrap)))
GIVE_UP (21);
/* Under bidi reordering, adding or deleting a character in the
beginning of a paragraph, before the first strong directional
character, can change the base direction of the paragraph (unless
the buffer specifies a fixed paragraph direction), which will
require redisplaying the whole paragraph. It might be worthwhile
to find the paragraph limits and widen the range of redisplayed
lines to that, but for now just give up this optimization and
redisplay from scratch. */
if (!NILP (BVAR (XBUFFER (w->contents), bidi_display_reordering))
&& NILP (BVAR (XBUFFER (w->contents), bidi_paragraph_direction)))
GIVE_UP (22);
/* Give up if the buffer has line-spacing set, as Lisp-level changes
to that variable require thorough redisplay. */
if (!NILP (BVAR (XBUFFER (w->contents), extra_line_spacing)))
GIVE_UP (23);
/* Make sure beg_unchanged and end_unchanged are up to date. Do it
only if buffer has really changed. The reason is that the gap is
initially at Z for freshly visited files. The code below would
set end_unchanged to 0 in that case. */
if (MODIFF > SAVE_MODIFF
/* This seems to happen sometimes after saving a buffer. */
|| BEG_UNCHANGED + END_UNCHANGED > Z_BYTE)
{
if (GPT - BEG < BEG_UNCHANGED)
BEG_UNCHANGED = GPT - BEG;
if (Z - GPT < END_UNCHANGED)
END_UNCHANGED = Z - GPT;
}
/* The position of the first and last character that has been changed. */
first_changed_charpos = BEG + BEG_UNCHANGED;
last_changed_charpos = Z - END_UNCHANGED;
/* If window starts after a line end, and the last change is in
front of that newline, then changes don't affect the display.
This case happens with stealth-fontification. Note that although
the display is unchanged, glyph positions in the matrix have to
be adjusted, of course. */
row = MATRIX_ROW (w->current_matrix, w->window_end_vpos);
if (MATRIX_ROW_DISPLAYS_TEXT_P (row)
&& ((last_changed_charpos < CHARPOS (start)
&& CHARPOS (start) == BEGV)
|| (last_changed_charpos < CHARPOS (start) - 1
&& FETCH_BYTE (BYTEPOS (start) - 1) == '\n')))
{
ptrdiff_t Z_old, Z_delta, Z_BYTE_old, Z_delta_bytes;
struct glyph_row *r0;
/* Compute how many chars/bytes have been added to or removed
from the buffer. */
Z_old = MATRIX_ROW_END_CHARPOS (row) + w->window_end_pos;
Z_BYTE_old = MATRIX_ROW_END_BYTEPOS (row) + w->window_end_bytepos;
Z_delta = Z - Z_old;
Z_delta_bytes = Z_BYTE - Z_BYTE_old;
/* Give up if PT is not in the window. Note that it already has
been checked at the start of try_window_id that PT is not in
front of the window start. */
if (PT >= MATRIX_ROW_END_CHARPOS (row) + Z_delta)
GIVE_UP (13);
/* If window start is unchanged, we can reuse the whole matrix
as is, after adjusting glyph positions. No need to compute
the window end again, since its offset from Z hasn't changed. */
r0 = MATRIX_FIRST_TEXT_ROW (current_matrix);
if (CHARPOS (start) == MATRIX_ROW_START_CHARPOS (r0) + Z_delta
&& BYTEPOS (start) == MATRIX_ROW_START_BYTEPOS (r0) + Z_delta_bytes
/* PT must not be in a partially visible line. */
&& !(PT >= MATRIX_ROW_START_CHARPOS (row) + Z_delta
&& MATRIX_ROW_BOTTOM_Y (row) > window_text_bottom_y (w)))
{
/* Adjust positions in the glyph matrix. */
if (Z_delta || Z_delta_bytes)
{
struct glyph_row *r1
= MATRIX_BOTTOM_TEXT_ROW (current_matrix, w);
increment_matrix_positions (w->current_matrix,
MATRIX_ROW_VPOS (r0, current_matrix),
MATRIX_ROW_VPOS (r1, current_matrix),
Z_delta, Z_delta_bytes);
}
/* Set the cursor. */
row = row_containing_pos (w, PT, r0, NULL, 0);
if (row)
set_cursor_from_row (w, row, current_matrix, 0, 0, 0, 0);
return 1;
}
}
/* Handle the case that changes are all below what is displayed in
the window, and that PT is in the window. This shortcut cannot
be taken if ZV is visible in the window, and text has been added
there that is visible in the window. */
if (first_changed_charpos >= MATRIX_ROW_END_CHARPOS (row)
/* ZV is not visible in the window, or there are no
changes at ZV, actually. */
&& (current_matrix->zv > MATRIX_ROW_END_CHARPOS (row)
|| first_changed_charpos == last_changed_charpos))
{
struct glyph_row *r0;
/* Give up if PT is not in the window. Note that it already has
been checked at the start of try_window_id that PT is not in
front of the window start. */
if (PT >= MATRIX_ROW_END_CHARPOS (row))
GIVE_UP (14);
/* If window start is unchanged, we can reuse the whole matrix
as is, without changing glyph positions since no text has
been added/removed in front of the window end. */
r0 = MATRIX_FIRST_TEXT_ROW (current_matrix);
if (TEXT_POS_EQUAL_P (start, r0->minpos)
/* PT must not be in a partially visible line. */
&& !(PT >= MATRIX_ROW_START_CHARPOS (row)
&& MATRIX_ROW_BOTTOM_Y (row) > window_text_bottom_y (w)))
{
/* We have to compute the window end anew since text
could have been added/removed after it. */
w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (row);
w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
/* Set the cursor. */
row = row_containing_pos (w, PT, r0, NULL, 0);
if (row)
set_cursor_from_row (w, row, current_matrix, 0, 0, 0, 0);
return 2;
}
}
/* Give up if window start is in the changed area.
The condition used to read
(BEG_UNCHANGED + END_UNCHANGED != Z - BEG && ...)
but why that was tested escapes me at the moment. */
if (CHARPOS (start) >= first_changed_charpos
&& CHARPOS (start) <= last_changed_charpos)
GIVE_UP (15);
/* Check that window start agrees with the start of the first glyph
row in its current matrix. Check this after we know the window
start is not in changed text, otherwise positions would not be
comparable. */
row = MATRIX_FIRST_TEXT_ROW (current_matrix);
if (!TEXT_POS_EQUAL_P (start, row->minpos))
GIVE_UP (16);
/* Give up if the window ends in strings. Overlay strings
at the end are difficult to handle, so don't try. */
row = MATRIX_ROW (current_matrix, w->window_end_vpos);
if (MATRIX_ROW_START_CHARPOS (row) == MATRIX_ROW_END_CHARPOS (row))
GIVE_UP (20);
/* Compute the position at which we have to start displaying new
lines. Some of the lines at the top of the window might be
reusable because they are not displaying changed text. Find the
last row in W's current matrix not affected by changes at the
start of current_buffer. Value is null if changes start in the
first line of window. */
last_unchanged_at_beg_row = find_last_unchanged_at_beg_row (w);
if (last_unchanged_at_beg_row)
{
/* Avoid starting to display in the middle of a character, a TAB
for instance. This is easier than to set up the iterator
exactly, and it's not a frequent case, so the additional
effort wouldn't really pay off. */
while ((MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (last_unchanged_at_beg_row)
|| last_unchanged_at_beg_row->ends_in_newline_from_string_p)
&& last_unchanged_at_beg_row > w->current_matrix->rows)
--last_unchanged_at_beg_row;
if (MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (last_unchanged_at_beg_row))
GIVE_UP (17);
if (! init_to_row_end (&it, w, last_unchanged_at_beg_row))
GIVE_UP (18);
start_pos = it.current.pos;
/* Start displaying new lines in the desired matrix at the same
vpos we would use in the current matrix, i.e. below
last_unchanged_at_beg_row. */
it.vpos = 1 + MATRIX_ROW_VPOS (last_unchanged_at_beg_row,
current_matrix);
it.glyph_row = MATRIX_ROW (desired_matrix, it.vpos);
it.current_y = MATRIX_ROW_BOTTOM_Y (last_unchanged_at_beg_row);
eassert (it.hpos == 0 && it.current_x == 0);
}
else
{
/* There are no reusable lines at the start of the window.
Start displaying in the first text line. */
start_display (&it, w, start);
it.vpos = it.first_vpos;
start_pos = it.current.pos;
}
/* Find the first row that is not affected by changes at the end of
the buffer. Value will be null if there is no unchanged row, in
which case we must redisplay to the end of the window. delta
will be set to the value by which buffer positions beginning with
first_unchanged_at_end_row have to be adjusted due to text
changes. */
first_unchanged_at_end_row
= find_first_unchanged_at_end_row (w, &delta, &delta_bytes);
IF_DEBUG (debug_delta = delta);
IF_DEBUG (debug_delta_bytes = delta_bytes);
/* Set stop_pos to the buffer position up to which we will have to
display new lines. If first_unchanged_at_end_row != NULL, this
is the buffer position of the start of the line displayed in that
row. For first_unchanged_at_end_row == NULL, use 0 to indicate
that we don't stop at a buffer position. */
stop_pos = 0;
if (first_unchanged_at_end_row)
{
eassert (last_unchanged_at_beg_row == NULL
|| first_unchanged_at_end_row >= last_unchanged_at_beg_row);
/* If this is a continuation line, move forward to the next one
that isn't. Changes in lines above affect this line.
Caution: this may move first_unchanged_at_end_row to a row
not displaying text. */
while (MATRIX_ROW_CONTINUATION_LINE_P (first_unchanged_at_end_row)
&& MATRIX_ROW_DISPLAYS_TEXT_P (first_unchanged_at_end_row)
&& (MATRIX_ROW_BOTTOM_Y (first_unchanged_at_end_row)
< it.last_visible_y))
++first_unchanged_at_end_row;
if (!MATRIX_ROW_DISPLAYS_TEXT_P (first_unchanged_at_end_row)
|| (MATRIX_ROW_BOTTOM_Y (first_unchanged_at_end_row)
>= it.last_visible_y))
first_unchanged_at_end_row = NULL;
else
{
stop_pos = (MATRIX_ROW_START_CHARPOS (first_unchanged_at_end_row)
+ delta);
first_unchanged_at_end_vpos
= MATRIX_ROW_VPOS (first_unchanged_at_end_row, current_matrix);
eassert (stop_pos >= Z - END_UNCHANGED);
}
}
else if (last_unchanged_at_beg_row == NULL)
GIVE_UP (19);
#ifdef GLYPH_DEBUG
/* Either there is no unchanged row at the end, or the one we have
now displays text. This is a necessary condition for the window
end pos calculation at the end of this function. */
eassert (first_unchanged_at_end_row == NULL
|| MATRIX_ROW_DISPLAYS_TEXT_P (first_unchanged_at_end_row));
debug_last_unchanged_at_beg_vpos
= (last_unchanged_at_beg_row
? MATRIX_ROW_VPOS (last_unchanged_at_beg_row, current_matrix)
: -1);
debug_first_unchanged_at_end_vpos = first_unchanged_at_end_vpos;
#endif /* GLYPH_DEBUG */
/* Display new lines. Set last_text_row to the last new line
displayed which has text on it, i.e. might end up as being the
line where the window_end_vpos is. */
w->cursor.vpos = -1;
last_text_row = NULL;
overlay_arrow_seen = false;
if (it.current_y < it.last_visible_y
&& !f->fonts_changed
&& (first_unchanged_at_end_row == NULL
|| IT_CHARPOS (it) < stop_pos))
it.glyph_row->reversed_p = false;
while (it.current_y < it.last_visible_y
&& !f->fonts_changed
&& (first_unchanged_at_end_row == NULL
|| IT_CHARPOS (it) < stop_pos))
{
if (display_line (&it))
last_text_row = it.glyph_row - 1;
}
if (f->fonts_changed)
return -1;
/* The redisplay iterations in display_line above could have
triggered font-lock, which could have done something that
invalidates IT->w window's end-point information, on which we
rely below. E.g., one package, which will remain unnamed, used
to install a font-lock-fontify-region-function that called
bury-buffer, whose side effect is to switch the buffer displayed
by IT->w, and that predictably resets IT->w's window_end_valid
flag, which we already tested at the entry to this function.
Amply punish such packages/modes by giving up on this
optimization in those cases. */
if (!w->window_end_valid)
{
clear_glyph_matrix (w->desired_matrix);
return -1;
}
/* Compute differences in buffer positions, y-positions etc. for
lines reused at the bottom of the window. Compute what we can
scroll. */
if (first_unchanged_at_end_row
/* No lines reused because we displayed everything up to the
bottom of the window. */
&& it.current_y < it.last_visible_y)
{
dvpos = (it.vpos
- MATRIX_ROW_VPOS (first_unchanged_at_end_row,
current_matrix));
dy = it.current_y - first_unchanged_at_end_row->y;
run.current_y = first_unchanged_at_end_row->y;
run.desired_y = run.current_y + dy;
run.height = it.last_visible_y - max (run.current_y, run.desired_y);
}
else
{
delta = delta_bytes = dvpos = dy
= run.current_y = run.desired_y = run.height = 0;
first_unchanged_at_end_row = NULL;
}
IF_DEBUG ((debug_dvpos = dvpos, debug_dy = dy));
/* Find the cursor if not already found. We have to decide whether
PT will appear on this window (it sometimes doesn't, but this is
not a very frequent case.) This decision has to be made before
the current matrix is altered. A value of cursor.vpos < 0 means
that PT is either in one of the lines beginning at
first_unchanged_at_end_row or below the window. Don't care for
lines that might be displayed later at the window end; as
mentioned, this is not a frequent case. */
if (w->cursor.vpos < 0)
{
/* Cursor in unchanged rows at the top? */
if (PT < CHARPOS (start_pos)
&& last_unchanged_at_beg_row)
{
row = row_containing_pos (w, PT,
MATRIX_FIRST_TEXT_ROW (w->current_matrix),
last_unchanged_at_beg_row + 1, 0);
if (row)
set_cursor_from_row (w, row, w->current_matrix, 0, 0, 0, 0);
}
/* Start from first_unchanged_at_end_row looking for PT. */
else if (first_unchanged_at_end_row)
{
row = row_containing_pos (w, PT - delta,
first_unchanged_at_end_row, NULL, 0);
if (row)
set_cursor_from_row (w, row, w->current_matrix, delta,
delta_bytes, dy, dvpos);
}
/* Give up if cursor was not found. */
if (w->cursor.vpos < 0)
{
clear_glyph_matrix (w->desired_matrix);
return -1;
}
}
/* Don't let the cursor end in the scroll margins. */
{
int this_scroll_margin, cursor_height;
int frame_line_height = default_line_pixel_height (w);
int window_total_lines
= WINDOW_TOTAL_LINES (w) * FRAME_LINE_HEIGHT (it.f) / frame_line_height;
this_scroll_margin =
max (0, min (scroll_margin, window_total_lines / 4));
this_scroll_margin *= frame_line_height;
cursor_height = MATRIX_ROW (w->desired_matrix, w->cursor.vpos)->height;
if ((w->cursor.y < this_scroll_margin
&& CHARPOS (start) > BEGV)
/* Old redisplay didn't take scroll margin into account at the bottom,
but then global-hl-line-mode doesn't scroll. KFS 2004-06-14 */
|| (w->cursor.y + (make_cursor_line_fully_visible_p
? cursor_height + this_scroll_margin
: 1)) > it.last_visible_y)
{
w->cursor.vpos = -1;
clear_glyph_matrix (w->desired_matrix);
return -1;
}
}
/* Scroll the display. Do it before changing the current matrix so
that xterm.c doesn't get confused about where the cursor glyph is
found. */
if (dy && run.height)
{
update_begin (f);
if (FRAME_WINDOW_P (f))
{
FRAME_RIF (f)->update_window_begin_hook (w);
FRAME_RIF (f)->clear_window_mouse_face (w);
FRAME_RIF (f)->scroll_run_hook (w, &run);
FRAME_RIF (f)->update_window_end_hook (w, false, false);
}
else
{
/* Terminal frame. In this case, dvpos gives the number of
lines to scroll by; dvpos < 0 means scroll up. */
int from_vpos
= MATRIX_ROW_VPOS (first_unchanged_at_end_row, w->current_matrix);
int from = WINDOW_TOP_EDGE_LINE (w) + from_vpos;
int end = (WINDOW_TOP_EDGE_LINE (w)
+ WINDOW_WANTS_HEADER_LINE_P (w)
+ window_internal_height (w));
#if defined (HAVE_GPM) || defined (MSDOS)
x_clear_window_mouse_face (w);
#endif
/* Perform the operation on the screen. */
if (dvpos > 0)
{
/* Scroll last_unchanged_at_beg_row to the end of the
window down dvpos lines. */
set_terminal_window (f, end);
/* On dumb terminals delete dvpos lines at the end
before inserting dvpos empty lines. */
if (!FRAME_SCROLL_REGION_OK (f))
ins_del_lines (f, end - dvpos, -dvpos);
/* Insert dvpos empty lines in front of
last_unchanged_at_beg_row. */
ins_del_lines (f, from, dvpos);
}
else if (dvpos < 0)
{
/* Scroll up last_unchanged_at_beg_vpos to the end of
the window to last_unchanged_at_beg_vpos - |dvpos|. */
set_terminal_window (f, end);
/* Delete dvpos lines in front of
last_unchanged_at_beg_vpos. ins_del_lines will set
the cursor to the given vpos and emit |dvpos| delete
line sequences. */
ins_del_lines (f, from + dvpos, dvpos);
/* On a dumb terminal insert dvpos empty lines at the
end. */
if (!FRAME_SCROLL_REGION_OK (f))
ins_del_lines (f, end + dvpos, -dvpos);
}
set_terminal_window (f, 0);
}
update_end (f);
}
/* Shift reused rows of the current matrix to the right position.
BOTTOM_ROW is the last + 1 row in the current matrix reserved for
text. */
bottom_row = MATRIX_BOTTOM_TEXT_ROW (current_matrix, w);
bottom_vpos = MATRIX_ROW_VPOS (bottom_row, current_matrix);
if (dvpos < 0)
{
rotate_matrix (current_matrix, first_unchanged_at_end_vpos + dvpos,
bottom_vpos, dvpos);
clear_glyph_matrix_rows (current_matrix, bottom_vpos + dvpos,
bottom_vpos);
}
else if (dvpos > 0)
{
rotate_matrix (current_matrix, first_unchanged_at_end_vpos,
bottom_vpos, dvpos);
clear_glyph_matrix_rows (current_matrix, first_unchanged_at_end_vpos,
first_unchanged_at_end_vpos + dvpos);
}
/* For frame-based redisplay, make sure that current frame and window
matrix are in sync with respect to glyph memory. */
if (!FRAME_WINDOW_P (f))
sync_frame_with_window_matrix_rows (w);
/* Adjust buffer positions in reused rows. */
if (delta || delta_bytes)
increment_matrix_positions (current_matrix,
first_unchanged_at_end_vpos + dvpos,
bottom_vpos, delta, delta_bytes);
/* Adjust Y positions. */
if (dy)
shift_glyph_matrix (w, current_matrix,
first_unchanged_at_end_vpos + dvpos,
bottom_vpos, dy);
if (first_unchanged_at_end_row)
{
first_unchanged_at_end_row += dvpos;
if (first_unchanged_at_end_row->y >= it.last_visible_y
|| !MATRIX_ROW_DISPLAYS_TEXT_P (first_unchanged_at_end_row))
first_unchanged_at_end_row = NULL;
}
/* If scrolling up, there may be some lines to display at the end of
the window. */
last_text_row_at_end = NULL;
if (dy < 0)
{
/* Scrolling up can leave for example a partially visible line
at the end of the window to be redisplayed. */
/* Set last_row to the glyph row in the current matrix where the
window end line is found. It has been moved up or down in
the matrix by dvpos. */
int last_vpos = w->window_end_vpos + dvpos;
struct glyph_row *last_row = MATRIX_ROW (current_matrix, last_vpos);
/* If last_row is the window end line, it should display text. */
eassert (MATRIX_ROW_DISPLAYS_TEXT_P (last_row));
/* If window end line was partially visible before, begin
displaying at that line. Otherwise begin displaying with the
line following it. */
if (MATRIX_ROW_BOTTOM_Y (last_row) - dy >= it.last_visible_y)
{
init_to_row_start (&it, w, last_row);
it.vpos = last_vpos;
it.current_y = last_row->y;
}
else
{
init_to_row_end (&it, w, last_row);
it.vpos = 1 + last_vpos;
it.current_y = MATRIX_ROW_BOTTOM_Y (last_row);
++last_row;
}
/* We may start in a continuation line. If so, we have to
get the right continuation_lines_width and current_x. */
it.continuation_lines_width = last_row->continuation_lines_width;
it.hpos = it.current_x = 0;
/* Display the rest of the lines at the window end. */
it.glyph_row = MATRIX_ROW (desired_matrix, it.vpos);
while (it.current_y < it.last_visible_y && !f->fonts_changed)
{
/* Is it always sure that the display agrees with lines in
the current matrix? I don't think so, so we mark rows
displayed invalid in the current matrix by setting their
enabled_p flag to false. */
SET_MATRIX_ROW_ENABLED_P (w->current_matrix, it.vpos, false);
if (display_line (&it))
last_text_row_at_end = it.glyph_row - 1;
}
}
/* Update window_end_pos and window_end_vpos. */
if (first_unchanged_at_end_row && !last_text_row_at_end)
{
/* Window end line if one of the preserved rows from the current
matrix. Set row to the last row displaying text in current
matrix starting at first_unchanged_at_end_row, after
scrolling. */
eassert (MATRIX_ROW_DISPLAYS_TEXT_P (first_unchanged_at_end_row));
row = find_last_row_displaying_text (w->current_matrix, &it,
first_unchanged_at_end_row);
eassume (row && MATRIX_ROW_DISPLAYS_TEXT_P (row));
adjust_window_ends (w, row, true);
eassert (w->window_end_bytepos >= 0);
IF_DEBUG (debug_method_add (w, "A"));
}
else if (last_text_row_at_end)
{
adjust_window_ends (w, last_text_row_at_end, false);
eassert (w->window_end_bytepos >= 0);
IF_DEBUG (debug_method_add (w, "B"));
}
else if (last_text_row)
{
/* We have displayed either to the end of the window or at the
end of the window, i.e. the last row with text is to be found
in the desired matrix. */
adjust_window_ends (w, last_text_row, false);
eassert (w->window_end_bytepos >= 0);
}
else if (first_unchanged_at_end_row == NULL
&& last_text_row == NULL
&& last_text_row_at_end == NULL)
{
/* Displayed to end of window, but no line containing text was
displayed. Lines were deleted at the end of the window. */
bool first_vpos = WINDOW_WANTS_HEADER_LINE_P (w);
int vpos = w->window_end_vpos;
struct glyph_row *current_row = current_matrix->rows + vpos;
struct glyph_row *desired_row = desired_matrix->rows + vpos;
for (row = NULL; !row; --vpos, --current_row, --desired_row)
{
eassert (first_vpos <= vpos);
if (desired_row->enabled_p)
{
if (MATRIX_ROW_DISPLAYS_TEXT_P (desired_row))
row = desired_row;
}
else if (MATRIX_ROW_DISPLAYS_TEXT_P (current_row))
row = current_row;
}
w->window_end_vpos = vpos + 1;
w->window_end_pos = Z - MATRIX_ROW_END_CHARPOS (row);
w->window_end_bytepos = Z_BYTE - MATRIX_ROW_END_BYTEPOS (row);
eassert (w->window_end_bytepos >= 0);
IF_DEBUG (debug_method_add (w, "C"));
}
else
emacs_abort ();
IF_DEBUG ((debug_end_pos = w->window_end_pos,
debug_end_vpos = w->window_end_vpos));
/* Record that display has not been completed. */
w->window_end_valid = false;
w->desired_matrix->no_scrolling_p = true;
return 3;
#undef GIVE_UP
}
\f
/***********************************************************************
More debugging support
***********************************************************************/
#ifdef GLYPH_DEBUG
void dump_glyph_row (struct glyph_row *, int, int) EXTERNALLY_VISIBLE;
void dump_glyph_matrix (struct glyph_matrix *, int) EXTERNALLY_VISIBLE;
void dump_glyph (struct glyph_row *, struct glyph *, int) EXTERNALLY_VISIBLE;
/* Dump the contents of glyph matrix MATRIX on stderr.
GLYPHS 0 means don't show glyph contents.
GLYPHS 1 means show glyphs in short form
GLYPHS > 1 means show glyphs in long form. */
void
dump_glyph_matrix (struct glyph_matrix *matrix, int glyphs)
{
int i;
for (i = 0; i < matrix->nrows; ++i)
dump_glyph_row (MATRIX_ROW (matrix, i), i, glyphs);
}
/* Dump contents of glyph GLYPH to stderr. ROW and AREA are
the glyph row and area where the glyph comes from. */
void
dump_glyph (struct glyph_row *row, struct glyph *glyph, int area)
{
if (glyph->type == CHAR_GLYPH
|| glyph->type == GLYPHLESS_GLYPH)
{
fprintf (stderr,
" %5"pD"d %c %9"pI"d %c %3d 0x%06x %c %4d %1.1d%1.1d\n",
glyph - row->glyphs[TEXT_AREA],
(glyph->type == CHAR_GLYPH
? 'C'
: 'G'),
glyph->charpos,
(BUFFERP (glyph->object)
? 'B'
: (STRINGP (glyph->object)
? 'S'
: (NILP (glyph->object)
? '0'
: '-'))),
glyph->pixel_width,
glyph->u.ch,
(glyph->u.ch < 0x80 && glyph->u.ch >= ' '
? glyph->u.ch
: '.'),
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
}
else if (glyph->type == STRETCH_GLYPH)
{
fprintf (stderr,
" %5"pD"d %c %9"pI"d %c %3d 0x%06x %c %4d %1.1d%1.1d\n",
glyph - row->glyphs[TEXT_AREA],
'S',
glyph->charpos,
(BUFFERP (glyph->object)
? 'B'
: (STRINGP (glyph->object)
? 'S'
: (NILP (glyph->object)
? '0'
: '-'))),
glyph->pixel_width,
0,
' ',
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
}
else if (glyph->type == IMAGE_GLYPH)
{
fprintf (stderr,
" %5"pD"d %c %9"pI"d %c %3d 0x%06x %c %4d %1.1d%1.1d\n",
glyph - row->glyphs[TEXT_AREA],
'I',
glyph->charpos,
(BUFFERP (glyph->object)
? 'B'
: (STRINGP (glyph->object)
? 'S'
: (NILP (glyph->object)
? '0'
: '-'))),
glyph->pixel_width,
glyph->u.img_id,
'.',
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
}
else if (glyph->type == COMPOSITE_GLYPH)
{
fprintf (stderr,
" %5"pD"d %c %9"pI"d %c %3d 0x%06x",
glyph - row->glyphs[TEXT_AREA],
'+',
glyph->charpos,
(BUFFERP (glyph->object)
? 'B'
: (STRINGP (glyph->object)
? 'S'
: (NILP (glyph->object)
? '0'
: '-'))),
glyph->pixel_width,
glyph->u.cmp.id);
if (glyph->u.cmp.automatic)
fprintf (stderr,
"[%d-%d]",
glyph->slice.cmp.from, glyph->slice.cmp.to);
fprintf (stderr, " . %4d %1.1d%1.1d\n",
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
}
else if (glyph->type == XWIDGET_GLYPH)
{
#ifndef HAVE_XWIDGETS
eassume (false);
#else
fprintf (stderr,
" %5d %4c %6d %c %3d 0x%05x %c %4d %1.1d%1.1d\n",
glyph - row->glyphs[TEXT_AREA],
'X',
glyph->charpos,
(BUFFERP (glyph->object)
? 'B'
: (STRINGP (glyph->object)
? 'S'
: '-')),
glyph->pixel_width,
glyph->u.xwidget,
'.',
glyph->face_id,
glyph->left_box_line_p,
glyph->right_box_line_p);
#endif
}
}
/* Dump the contents of glyph row at VPOS in MATRIX to stderr.
GLYPHS 0 means don't show glyph contents.
GLYPHS 1 means show glyphs in short form
GLYPHS > 1 means show glyphs in long form. */
void
dump_glyph_row (struct glyph_row *row, int vpos, int glyphs)
{
if (glyphs != 1)
{
fprintf (stderr, "Row Start End Used oE><\\CTZFesm X Y W H V A P\n");
fprintf (stderr, "==============================================================================\n");
fprintf (stderr, "%3d %9"pI"d %9"pI"d %4d %1.1d%1.1d%1.1d%1.1d\
%1.1d%1.1d%1.1d%1.1d%1.1d%1.1d%1.1d%1.1d %4d %4d %4d %4d %4d %4d %4d\n",
vpos,
MATRIX_ROW_START_CHARPOS (row),
MATRIX_ROW_END_CHARPOS (row),
row->used[TEXT_AREA],
row->contains_overlapping_glyphs_p,
row->enabled_p,
row->truncated_on_left_p,
row->truncated_on_right_p,
row->continued_p,
MATRIX_ROW_CONTINUATION_LINE_P (row),
MATRIX_ROW_DISPLAYS_TEXT_P (row),
row->ends_at_zv_p,
row->fill_line_p,
row->ends_in_middle_of_char_p,
row->starts_in_middle_of_char_p,
row->mouse_face_p,
row->x,
row->y,
row->pixel_width,
row->height,
row->visible_height,
row->ascent,
row->phys_ascent);
/* The next 3 lines should align to "Start" in the header. */
fprintf (stderr, " %9"pD"d %9"pD"d\t%5d\n", row->start.overlay_string_index,
row->end.overlay_string_index,
row->continuation_lines_width);
fprintf (stderr, " %9"pI"d %9"pI"d\n",
CHARPOS (row->start.string_pos),
CHARPOS (row->end.string_pos));
fprintf (stderr, " %9d %9d\n", row->start.dpvec_index,
row->end.dpvec_index);
}
if (glyphs > 1)
{
int area;
for (area = LEFT_MARGIN_AREA; area < LAST_AREA; ++area)
{
struct glyph *glyph = row->glyphs[area];
struct glyph *glyph_end = glyph + row->used[area];
/* Glyph for a line end in text. */
if (area == TEXT_AREA && glyph == glyph_end && glyph->charpos > 0)
++glyph_end;
if (glyph < glyph_end)
fprintf (stderr, " Glyph# Type Pos O W Code C Face LR\n");
for (; glyph < glyph_end; ++glyph)
dump_glyph (row, glyph, area);
}
}
else if (glyphs == 1)
{
int area;
char s[SHRT_MAX + 4];
for (area = LEFT_MARGIN_AREA; area < LAST_AREA; ++area)
{
int i;
for (i = 0; i < row->used[area]; ++i)
{
struct glyph *glyph = row->glyphs[area] + i;
if (i == row->used[area] - 1
&& area == TEXT_AREA
&& NILP (glyph->object)
&& glyph->type == CHAR_GLYPH
&& glyph->u.ch == ' ')
{
strcpy (&s[i], "[\\n]");
i += 4;
}
else if (glyph->type == CHAR_GLYPH
&& glyph->u.ch < 0x80
&& glyph->u.ch >= ' ')
s[i] = glyph->u.ch;
else
s[i] = '.';
}
s[i] = '\0';
fprintf (stderr, "%3d: (%d) '%s'\n", vpos, row->enabled_p, s);
}
}
}
DEFUN ("dump-glyph-matrix", Fdump_glyph_matrix,
Sdump_glyph_matrix, 0, 1, "p",
doc: /* Dump the current matrix of the selected window to stderr.
Shows contents of glyph row structures. With non-nil
parameter GLYPHS, dump glyphs as well. If GLYPHS is 1 show
glyphs in short form, otherwise show glyphs in long form.
Interactively, no argument means show glyphs in short form;
with numeric argument, its value is passed as the GLYPHS flag. */)
(Lisp_Object glyphs)
{
struct window *w = XWINDOW (selected_window);
struct buffer *buffer = XBUFFER (w->contents);
fprintf (stderr, "PT = %"pI"d, BEGV = %"pI"d. ZV = %"pI"d\n",
BUF_PT (buffer), BUF_BEGV (buffer), BUF_ZV (buffer));
fprintf (stderr, "Cursor x = %d, y = %d, hpos = %d, vpos = %d\n",
w->cursor.x, w->cursor.y, w->cursor.hpos, w->cursor.vpos);
fprintf (stderr, "=============================================\n");
dump_glyph_matrix (w->current_matrix,
TYPE_RANGED_INTEGERP (int, glyphs) ? XINT (glyphs) : 0);
return Qnil;
}
DEFUN ("dump-frame-glyph-matrix", Fdump_frame_glyph_matrix,
Sdump_frame_glyph_matrix, 0, 0, "", doc: /* Dump the current glyph matrix of the selected frame to stderr.
Only text-mode frames have frame glyph matrices. */)
(void)
{
struct frame *f = XFRAME (selected_frame);
if (f->current_matrix)
dump_glyph_matrix (f->current_matrix, 1);
else
fprintf (stderr, "*** This frame doesn't have a frame glyph matrix ***\n");
return Qnil;
}
DEFUN ("dump-glyph-row", Fdump_glyph_row, Sdump_glyph_row, 1, 2, "",
doc: /* Dump glyph row ROW to stderr.
GLYPH 0 means don't dump glyphs.
GLYPH 1 means dump glyphs in short form.
GLYPH > 1 or omitted means dump glyphs in long form. */)
(Lisp_Object row, Lisp_Object glyphs)
{
struct glyph_matrix *matrix;
EMACS_INT vpos;
CHECK_NUMBER (row);
matrix = XWINDOW (selected_window)->current_matrix;
vpos = XINT (row);
if (vpos >= 0 && vpos < matrix->nrows)
dump_glyph_row (MATRIX_ROW (matrix, vpos),
vpos,
TYPE_RANGED_INTEGERP (int, glyphs) ? XINT (glyphs) : 2);
return Qnil;
}
DEFUN ("dump-tool-bar-row", Fdump_tool_bar_row, Sdump_tool_bar_row, 1, 2, "",
doc: /* Dump glyph row ROW of the tool-bar of the current frame to stderr.
GLYPH 0 means don't dump glyphs.
GLYPH 1 means dump glyphs in short form.
GLYPH > 1 or omitted means dump glyphs in long form.
If there's no tool-bar, or if the tool-bar is not drawn by Emacs,
do nothing. */)
(Lisp_Object row, Lisp_Object glyphs)
{
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS)
struct frame *sf = SELECTED_FRAME ();
struct glyph_matrix *m = XWINDOW (sf->tool_bar_window)->current_matrix;
EMACS_INT vpos;
CHECK_NUMBER (row);
vpos = XINT (row);
if (vpos >= 0 && vpos < m->nrows)
dump_glyph_row (MATRIX_ROW (m, vpos), vpos,
TYPE_RANGED_INTEGERP (int, glyphs) ? XINT (glyphs) : 2);
#endif
return Qnil;
}
DEFUN ("trace-redisplay", Ftrace_redisplay, Strace_redisplay, 0, 1, "P",
doc: /* Toggle tracing of redisplay.
With ARG, turn tracing on if and only if ARG is positive. */)
(Lisp_Object arg)
{
if (NILP (arg))
trace_redisplay_p = !trace_redisplay_p;
else
{
arg = Fprefix_numeric_value (arg);
trace_redisplay_p = XINT (arg) > 0;
}
return Qnil;
}
DEFUN ("trace-to-stderr", Ftrace_to_stderr, Strace_to_stderr, 1, MANY, "",
doc: /* Like `format', but print result to stderr.
usage: (trace-to-stderr STRING &rest OBJECTS) */)
(ptrdiff_t nargs, Lisp_Object *args)
{
Lisp_Object s = Fformat (nargs, args);
fwrite (SDATA (s), 1, SBYTES (s), stderr);
return Qnil;
}
#endif /* GLYPH_DEBUG */
\f
/***********************************************************************
Building Desired Matrix Rows
***********************************************************************/
/* Return a temporary glyph row holding the glyphs of an overlay arrow.
Used for non-window-redisplay windows, and for windows w/o left fringe. */
static struct glyph_row *
get_overlay_arrow_glyph_row (struct window *w, Lisp_Object overlay_arrow_string)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
struct buffer *buffer = XBUFFER (w->contents);
struct buffer *old = current_buffer;
const unsigned char *arrow_string = SDATA (overlay_arrow_string);
ptrdiff_t arrow_len = SCHARS (overlay_arrow_string);
const unsigned char *arrow_end = arrow_string + arrow_len;
const unsigned char *p;
struct it it;
bool multibyte_p;
int n_glyphs_before;
set_buffer_temp (buffer);
init_iterator (&it, w, -1, -1, &scratch_glyph_row, DEFAULT_FACE_ID);
scratch_glyph_row.reversed_p = false;
it.glyph_row->used[TEXT_AREA] = 0;
SET_TEXT_POS (it.position, 0, 0);
multibyte_p = !NILP (BVAR (buffer, enable_multibyte_characters));
p = arrow_string;
while (p < arrow_end)
{
Lisp_Object face, ilisp;
/* Get the next character. */
if (multibyte_p)
it.c = it.char_to_display = string_char_and_length (p, &it.len);
else
{
it.c = it.char_to_display = *p, it.len = 1;
if (! ASCII_CHAR_P (it.c))
it.char_to_display = BYTE8_TO_CHAR (it.c);
}
p += it.len;
/* Get its face. */
ilisp = make_number (p - arrow_string);
face = Fget_text_property (ilisp, Qface, overlay_arrow_string);
it.face_id = compute_char_face (f, it.char_to_display, face);
/* Compute its width, get its glyphs. */
n_glyphs_before = it.glyph_row->used[TEXT_AREA];
SET_TEXT_POS (it.position, -1, -1);
PRODUCE_GLYPHS (&it);
/* If this character doesn't fit any more in the line, we have
to remove some glyphs. */
if (it.current_x > it.last_visible_x)
{
it.glyph_row->used[TEXT_AREA] = n_glyphs_before;
break;
}
}
set_buffer_temp (old);
return it.glyph_row;
}
/* Insert truncation glyphs at the start of IT->glyph_row. Which
glyphs to insert is determined by produce_special_glyphs. */
static void
insert_left_trunc_glyphs (struct it *it)
{
struct it truncate_it;
struct glyph *from, *end, *to, *toend;
eassert (!FRAME_WINDOW_P (it->f)
|| (!it->glyph_row->reversed_p
&& WINDOW_LEFT_FRINGE_WIDTH (it->w) == 0)
|| (it->glyph_row->reversed_p
&& WINDOW_RIGHT_FRINGE_WIDTH (it->w) == 0));
/* Get the truncation glyphs. */
truncate_it = *it;
truncate_it.current_x = 0;
truncate_it.face_id = DEFAULT_FACE_ID;
truncate_it.glyph_row = &scratch_glyph_row;
truncate_it.area = TEXT_AREA;
truncate_it.glyph_row->used[TEXT_AREA] = 0;
CHARPOS (truncate_it.position) = BYTEPOS (truncate_it.position) = -1;
truncate_it.object = Qnil;
produce_special_glyphs (&truncate_it, IT_TRUNCATION);
/* Overwrite glyphs from IT with truncation glyphs. */
if (!it->glyph_row->reversed_p)
{
short tused = truncate_it.glyph_row->used[TEXT_AREA];
from = truncate_it.glyph_row->glyphs[TEXT_AREA];
end = from + tused;
to = it->glyph_row->glyphs[TEXT_AREA];
toend = to + it->glyph_row->used[TEXT_AREA];
if (FRAME_WINDOW_P (it->f))
{
/* On GUI frames, when variable-size fonts are displayed,
the truncation glyphs may need more pixels than the row's
glyphs they overwrite. We overwrite more glyphs to free
enough screen real estate, and enlarge the stretch glyph
on the right (see display_line), if there is one, to
preserve the screen position of the truncation glyphs on
the right. */
int w = 0;
struct glyph *g = to;
short used;
/* The first glyph could be partially visible, in which case
it->glyph_row->x will be negative. But we want the left
truncation glyphs to be aligned at the left margin of the
window, so we override the x coordinate at which the row
will begin. */
it->glyph_row->x = 0;
while (g < toend && w < it->truncation_pixel_width)
{
w += g->pixel_width;
++g;
}
if (g - to - tused > 0)
{
memmove (to + tused, g, (toend - g) * sizeof(*g));
it->glyph_row->used[TEXT_AREA] -= g - to - tused;
}
used = it->glyph_row->used[TEXT_AREA];
if (it->glyph_row->truncated_on_right_p
&& WINDOW_RIGHT_FRINGE_WIDTH (it->w) == 0
&& it->glyph_row->glyphs[TEXT_AREA][used - 2].type
== STRETCH_GLYPH)
{
int extra = w - it->truncation_pixel_width;
it->glyph_row->glyphs[TEXT_AREA][used - 2].pixel_width += extra;
}
}
while (from < end)
*to++ = *from++;
/* There may be padding glyphs left over. Overwrite them too. */
if (!FRAME_WINDOW_P (it->f))
{
while (to < toend && CHAR_GLYPH_PADDING_P (*to))
{
from = truncate_it.glyph_row->glyphs[TEXT_AREA];
while (from < end)
*to++ = *from++;
}
}
if (to > toend)
it->glyph_row->used[TEXT_AREA] = to - it->glyph_row->glyphs[TEXT_AREA];
}
else
{
short tused = truncate_it.glyph_row->used[TEXT_AREA];
/* In R2L rows, overwrite the last (rightmost) glyphs, and do
that back to front. */
end = truncate_it.glyph_row->glyphs[TEXT_AREA];
from = end + truncate_it.glyph_row->used[TEXT_AREA] - 1;
toend = it->glyph_row->glyphs[TEXT_AREA];
to = toend + it->glyph_row->used[TEXT_AREA] - 1;
if (FRAME_WINDOW_P (it->f))
{
int w = 0;
struct glyph *g = to;
while (g >= toend && w < it->truncation_pixel_width)
{
w += g->pixel_width;
--g;
}
if (to - g - tused > 0)
to = g + tused;
if (it->glyph_row->truncated_on_right_p
&& WINDOW_LEFT_FRINGE_WIDTH (it->w) == 0
&& it->glyph_row->glyphs[TEXT_AREA][1].type == STRETCH_GLYPH)
{
int extra = w - it->truncation_pixel_width;
it->glyph_row->glyphs[TEXT_AREA][1].pixel_width += extra;
}
}
while (from >= end && to >= toend)
*to-- = *from--;
if (!FRAME_WINDOW_P (it->f))
{
while (to >= toend && CHAR_GLYPH_PADDING_P (*to))
{
from =
truncate_it.glyph_row->glyphs[TEXT_AREA]
+ truncate_it.glyph_row->used[TEXT_AREA] - 1;
while (from >= end && to >= toend)
*to-- = *from--;
}
}
if (from >= end)
{
/* Need to free some room before prepending additional
glyphs. */
int move_by = from - end + 1;
struct glyph *g0 = it->glyph_row->glyphs[TEXT_AREA];
struct glyph *g = g0 + it->glyph_row->used[TEXT_AREA] - 1;
for ( ; g >= g0; g--)
g[move_by] = *g;
while (from >= end)
*to-- = *from--;
it->glyph_row->used[TEXT_AREA] += move_by;
}
}
}
/* Compute the hash code for ROW. */
unsigned
row_hash (struct glyph_row *row)
{
int area, k;
unsigned hashval = 0;
for (area = LEFT_MARGIN_AREA; area < LAST_AREA; ++area)
for (k = 0; k < row->used[area]; ++k)
hashval = ((((hashval << 4) + (hashval >> 24)) & 0x0fffffff)
+ row->glyphs[area][k].u.val
+ row->glyphs[area][k].face_id
+ row->glyphs[area][k].padding_p
+ (row->glyphs[area][k].type << 2));
return hashval;
}
/* Compute the pixel height and width of IT->glyph_row.
Most of the time, ascent and height of a display line will be equal
to the max_ascent and max_height values of the display iterator
structure. This is not the case if
1. We hit ZV without displaying anything. In this case, max_ascent
and max_height will be zero.
2. We have some glyphs that don't contribute to the line height.
(The glyph row flag contributes_to_line_height_p is for future
pixmap extensions).
The first case is easily covered by using default values because in
these cases, the line height does not really matter, except that it
must not be zero. */
static void
compute_line_metrics (struct it *it)
{
struct glyph_row *row = it->glyph_row;
if (FRAME_WINDOW_P (it->f))
{
int i, min_y, max_y;
/* The line may consist of one space only, that was added to
place the cursor on it. If so, the row's height hasn't been
computed yet. */
if (row->height == 0)
{
if (it->max_ascent + it->max_descent == 0)
it->max_descent = it->max_phys_descent = FRAME_LINE_HEIGHT (it->f);
row->ascent = it->max_ascent;
row->height = it->max_ascent + it->max_descent;
row->phys_ascent = it->max_phys_ascent;
row->phys_height = it->max_phys_ascent + it->max_phys_descent;
row->extra_line_spacing = it->max_extra_line_spacing;
}
/* Compute the width of this line. */
row->pixel_width = row->x;
for (i = 0; i < row->used[TEXT_AREA]; ++i)
row->pixel_width += row->glyphs[TEXT_AREA][i].pixel_width;
eassert (row->pixel_width >= 0);
eassert (row->ascent >= 0 && row->height > 0);
row->overlapping_p = (MATRIX_ROW_OVERLAPS_SUCC_P (row)
|| MATRIX_ROW_OVERLAPS_PRED_P (row));
/* If first line's physical ascent is larger than its logical
ascent, use the physical ascent, and make the row taller.
This makes accented characters fully visible. */
if (row == MATRIX_FIRST_TEXT_ROW (it->w->desired_matrix)
&& row->phys_ascent > row->ascent)
{
row->height += row->phys_ascent - row->ascent;
row->ascent = row->phys_ascent;
}
/* Compute how much of the line is visible. */
row->visible_height = row->height;
min_y = WINDOW_HEADER_LINE_HEIGHT (it->w);
max_y = WINDOW_BOX_HEIGHT_NO_MODE_LINE (it->w);
if (row->y < min_y)
row->visible_height -= min_y - row->y;
if (row->y + row->height > max_y)
row->visible_height -= row->y + row->height - max_y;
}
else
{
row->pixel_width = row->used[TEXT_AREA];
if (row->continued_p)
row->pixel_width -= it->continuation_pixel_width;
else if (row->truncated_on_right_p)
row->pixel_width -= it->truncation_pixel_width;
row->ascent = row->phys_ascent = 0;
row->height = row->phys_height = row->visible_height = 1;
row->extra_line_spacing = 0;
}
/* Compute a hash code for this row. */
row->hash = row_hash (row);
it->max_ascent = it->max_descent = 0;
it->max_phys_ascent = it->max_phys_descent = 0;
}
/* Append one space to the glyph row of iterator IT if doing a
window-based redisplay. The space has the same face as
IT->face_id. Value is true if a space was added.
This function is called to make sure that there is always one glyph
at the end of a glyph row that the cursor can be set on under
window-systems. (If there weren't such a glyph we would not know
how wide and tall a box cursor should be displayed).
At the same time this space let's a nicely handle clearing to the
end of the line if the row ends in italic text. */
static bool
append_space_for_newline (struct it *it, bool default_face_p)
{
if (FRAME_WINDOW_P (it->f))
{
int n = it->glyph_row->used[TEXT_AREA];
if (it->glyph_row->glyphs[TEXT_AREA] + n
< it->glyph_row->glyphs[1 + TEXT_AREA])
{
/* Save some values that must not be changed.
Must save IT->c and IT->len because otherwise
ITERATOR_AT_END_P wouldn't work anymore after
append_space_for_newline has been called. */
enum display_element_type saved_what = it->what;
int saved_c = it->c, saved_len = it->len;
int saved_char_to_display = it->char_to_display;
int saved_x = it->current_x;
int saved_face_id = it->face_id;
bool saved_box_end = it->end_of_box_run_p;
struct text_pos saved_pos;
Lisp_Object saved_object;
struct face *face;
saved_object = it->object;
saved_pos = it->position;
it->what = IT_CHARACTER;
memset (&it->position, 0, sizeof it->position);
it->object = Qnil;
it->c = it->char_to_display = ' ';
it->len = 1;
/* If the default face was remapped, be sure to use the
remapped face for the appended newline. */
if (default_face_p)
it->face_id = lookup_basic_face (it->f, DEFAULT_FACE_ID);
else if (it->face_before_selective_p)
it->face_id = it->saved_face_id;
face = FACE_FROM_ID (it->f, it->face_id);
it->face_id = FACE_FOR_CHAR (it->f, face, 0, -1, Qnil);
/* In R2L rows, we will prepend a stretch glyph that will
have the end_of_box_run_p flag set for it, so there's no
need for the appended newline glyph to have that flag
set. */
if (it->glyph_row->reversed_p
/* But if the appended newline glyph goes all the way to
the end of the row, there will be no stretch glyph,
so leave the box flag set. */
&& saved_x + FRAME_COLUMN_WIDTH (it->f) < it->last_visible_x)
it->end_of_box_run_p = false;
PRODUCE_GLYPHS (it);
#ifdef HAVE_WINDOW_SYSTEM
/* Make sure this space glyph has the right ascent and
descent values, or else cursor at end of line will look
funny, and height of empty lines will be incorrect. */
struct glyph *g = it->glyph_row->glyphs[TEXT_AREA] + n;
struct font *font = face->font ? face->font : FRAME_FONT (it->f);
if (n == 0)
{
Lisp_Object height, total_height;
int extra_line_spacing = it->extra_line_spacing;
int boff = font->baseline_offset;
if (font->vertical_centering)
boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
it->object = saved_object; /* get_it_property needs this */
normal_char_ascent_descent (font, -1, &it->ascent, &it->descent);
/* Must do a subset of line height processing from
x_produce_glyph for newline characters. */
height = get_it_property (it, Qline_height);
if (CONSP (height)
&& CONSP (XCDR (height))
&& NILP (XCDR (XCDR (height))))
{
total_height = XCAR (XCDR (height));
height = XCAR (height);
}
else
total_height = Qnil;
height = calc_line_height_property (it, height, font, boff, true);
if (it->override_ascent >= 0)
{
it->ascent = it->override_ascent;
it->descent = it->override_descent;
boff = it->override_boff;
}
if (EQ (height, Qt))
extra_line_spacing = 0;
else
{
Lisp_Object spacing;
it->phys_ascent = it->ascent;
it->phys_descent = it->descent;
if (!NILP (height)
&& XINT (height) > it->ascent + it->descent)
it->ascent = XINT (height) - it->descent;
if (!NILP (total_height))
spacing = calc_line_height_property (it, total_height, font,
boff, false);
else
{
spacing = get_it_property (it, Qline_spacing);
spacing = calc_line_height_property (it, spacing, font,
boff, false);
}
if (INTEGERP (spacing))
{
extra_line_spacing = XINT (spacing);
if (!NILP (total_height))
extra_line_spacing -= (it->phys_ascent + it->phys_descent);
}
}
if (extra_line_spacing > 0)
{
it->descent += extra_line_spacing;
if (extra_line_spacing > it->max_extra_line_spacing)
it->max_extra_line_spacing = extra_line_spacing;
}
it->max_ascent = it->ascent;
it->max_descent = it->descent;
/* Make sure compute_line_metrics recomputes the row height. */
it->glyph_row->height = 0;
}
g->ascent = it->max_ascent;
g->descent = it->max_descent;
#endif
it->override_ascent = -1;
it->constrain_row_ascent_descent_p = false;
it->current_x = saved_x;
it->object = saved_object;
it->position = saved_pos;
it->what = saved_what;
it->face_id = saved_face_id;
it->len = saved_len;
it->c = saved_c;
it->char_to_display = saved_char_to_display;
it->end_of_box_run_p = saved_box_end;
return true;
}
}
return false;
}
/* Extend the face of the last glyph in the text area of IT->glyph_row
to the end of the display line. Called from display_line. If the
glyph row is empty, add a space glyph to it so that we know the
face to draw. Set the glyph row flag fill_line_p. If the glyph
row is R2L, prepend a stretch glyph to cover the empty space to the
left of the leftmost glyph. */
static void
extend_face_to_end_of_line (struct it *it)
{
struct face *face, *default_face;
struct frame *f = it->f;
/* If line is already filled, do nothing. Non window-system frames
get a grace of one more ``pixel'' because their characters are
1-``pixel'' wide, so they hit the equality too early. This grace
is needed only for R2L rows that are not continued, to produce
one extra blank where we could display the cursor. */
if ((it->current_x >= it->last_visible_x
+ (!FRAME_WINDOW_P (f)
&& it->glyph_row->reversed_p
&& !it->glyph_row->continued_p))
/* If the window has display margins, we will need to extend
their face even if the text area is filled. */
&& !(WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
|| WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0))
return;
/* The default face, possibly remapped. */
default_face = FACE_FROM_ID_OR_NULL (f,
lookup_basic_face (f, DEFAULT_FACE_ID));
/* Face extension extends the background and box of IT->face_id
to the end of the line. If the background equals the background
of the frame, we don't have to do anything. */
face = FACE_FROM_ID (f, (it->face_before_selective_p
? it->saved_face_id
: it->face_id));
if (FRAME_WINDOW_P (f)
&& MATRIX_ROW_DISPLAYS_TEXT_P (it->glyph_row)
&& face->box == FACE_NO_BOX
&& face->background == FRAME_BACKGROUND_PIXEL (f)
#ifdef HAVE_WINDOW_SYSTEM
&& !face->stipple
#endif
&& !it->glyph_row->reversed_p)
return;
/* Set the glyph row flag indicating that the face of the last glyph
in the text area has to be drawn to the end of the text area. */
it->glyph_row->fill_line_p = true;
/* If current character of IT is not ASCII, make sure we have the
ASCII face. This will be automatically undone the next time
get_next_display_element returns a multibyte character. Note
that the character will always be single byte in unibyte
text. */
if (!ASCII_CHAR_P (it->c))
{
it->face_id = FACE_FOR_CHAR (f, face, 0, -1, Qnil);
}
if (FRAME_WINDOW_P (f))
{
/* If the row is empty, add a space with the current face of IT,
so that we know which face to draw. */
if (it->glyph_row->used[TEXT_AREA] == 0)
{
it->glyph_row->glyphs[TEXT_AREA][0] = space_glyph;
it->glyph_row->glyphs[TEXT_AREA][0].face_id = face->id;
it->glyph_row->used[TEXT_AREA] = 1;
}
/* Mode line and the header line don't have margins, and
likewise the frame's tool-bar window, if there is any. */
if (!(it->glyph_row->mode_line_p
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS)
|| (WINDOWP (f->tool_bar_window)
&& it->w == XWINDOW (f->tool_bar_window))
#endif
))
{
if (WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
&& it->glyph_row->used[LEFT_MARGIN_AREA] == 0)
{
it->glyph_row->glyphs[LEFT_MARGIN_AREA][0] = space_glyph;
it->glyph_row->glyphs[LEFT_MARGIN_AREA][0].face_id =
default_face->id;
it->glyph_row->used[LEFT_MARGIN_AREA] = 1;
}
if (WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0
&& it->glyph_row->used[RIGHT_MARGIN_AREA] == 0)
{
it->glyph_row->glyphs[RIGHT_MARGIN_AREA][0] = space_glyph;
it->glyph_row->glyphs[RIGHT_MARGIN_AREA][0].face_id =
default_face->id;
it->glyph_row->used[RIGHT_MARGIN_AREA] = 1;
}
}
#ifdef HAVE_WINDOW_SYSTEM
if (it->glyph_row->reversed_p)
{
/* Prepend a stretch glyph to the row, such that the
rightmost glyph will be drawn flushed all the way to the
right margin of the window. The stretch glyph that will
occupy the empty space, if any, to the left of the
glyphs. */
struct font *font = face->font ? face->font : FRAME_FONT (f);
struct glyph *row_start = it->glyph_row->glyphs[TEXT_AREA];
struct glyph *row_end = row_start + it->glyph_row->used[TEXT_AREA];
struct glyph *g;
int row_width, stretch_ascent, stretch_width;
struct text_pos saved_pos;
int saved_face_id;
bool saved_avoid_cursor, saved_box_start;
for (row_width = 0, g = row_start; g < row_end; g++)
row_width += g->pixel_width;
/* FIXME: There are various minor display glitches in R2L
rows when only one of the fringes is missing. The
strange condition below produces the least bad effect. */
if ((WINDOW_LEFT_FRINGE_WIDTH (it->w) == 0)
== (WINDOW_RIGHT_FRINGE_WIDTH (it->w) == 0)
|| WINDOW_RIGHT_FRINGE_WIDTH (it->w) != 0)
stretch_width = window_box_width (it->w, TEXT_AREA);
else
stretch_width = it->last_visible_x - it->first_visible_x;
stretch_width -= row_width;
if (stretch_width > 0)
{
stretch_ascent =
(((it->ascent + it->descent)
* FONT_BASE (font)) / FONT_HEIGHT (font));
saved_pos = it->position;
memset (&it->position, 0, sizeof it->position);
saved_avoid_cursor = it->avoid_cursor_p;
it->avoid_cursor_p = true;
saved_face_id = it->face_id;
saved_box_start = it->start_of_box_run_p;
/* The last row's stretch glyph should get the default
face, to avoid painting the rest of the window with
the region face, if the region ends at ZV. */
if (it->glyph_row->ends_at_zv_p)
it->face_id = default_face->id;
else
it->face_id = face->id;
it->start_of_box_run_p = false;
append_stretch_glyph (it, Qnil, stretch_width,
it->ascent + it->descent, stretch_ascent);
it->position = saved_pos;
it->avoid_cursor_p = saved_avoid_cursor;
it->face_id = saved_face_id;
it->start_of_box_run_p = saved_box_start;
}
/* If stretch_width comes out negative, it means that the
last glyph is only partially visible. In R2L rows, we
want the leftmost glyph to be partially visible, so we
need to give the row the corresponding left offset. */
if (stretch_width < 0)
it->glyph_row->x = stretch_width;
}
#endif /* HAVE_WINDOW_SYSTEM */
}
else
{
/* Save some values that must not be changed. */
int saved_x = it->current_x;
struct text_pos saved_pos;
Lisp_Object saved_object;
enum display_element_type saved_what = it->what;
int saved_face_id = it->face_id;
saved_object = it->object;
saved_pos = it->position;
it->what = IT_CHARACTER;
memset (&it->position, 0, sizeof it->position);
it->object = Qnil;
it->c = it->char_to_display = ' ';
it->len = 1;
if (WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
&& (it->glyph_row->used[LEFT_MARGIN_AREA]
< WINDOW_LEFT_MARGIN_WIDTH (it->w))
&& !it->glyph_row->mode_line_p
&& default_face->background != FRAME_BACKGROUND_PIXEL (f))
{
struct glyph *g = it->glyph_row->glyphs[LEFT_MARGIN_AREA];
struct glyph *e = g + it->glyph_row->used[LEFT_MARGIN_AREA];
for (it->current_x = 0; g < e; g++)
it->current_x += g->pixel_width;
it->area = LEFT_MARGIN_AREA;
it->face_id = default_face->id;
while (it->glyph_row->used[LEFT_MARGIN_AREA]
< WINDOW_LEFT_MARGIN_WIDTH (it->w))
{
PRODUCE_GLYPHS (it);
/* term.c:produce_glyphs advances it->current_x only for
TEXT_AREA. */
it->current_x += it->pixel_width;
}
it->current_x = saved_x;
it->area = TEXT_AREA;
}
/* The last row's blank glyphs should get the default face, to
avoid painting the rest of the window with the region face,
if the region ends at ZV. */
if (it->glyph_row->ends_at_zv_p)
it->face_id = default_face->id;
else
it->face_id = face->id;
PRODUCE_GLYPHS (it);
while (it->current_x <= it->last_visible_x)
PRODUCE_GLYPHS (it);
if (WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0
&& (it->glyph_row->used[RIGHT_MARGIN_AREA]
< WINDOW_RIGHT_MARGIN_WIDTH (it->w))
&& !it->glyph_row->mode_line_p
&& default_face->background != FRAME_BACKGROUND_PIXEL (f))
{
struct glyph *g = it->glyph_row->glyphs[RIGHT_MARGIN_AREA];
struct glyph *e = g + it->glyph_row->used[RIGHT_MARGIN_AREA];
for ( ; g < e; g++)
it->current_x += g->pixel_width;
it->area = RIGHT_MARGIN_AREA;
it->face_id = default_face->id;
while (it->glyph_row->used[RIGHT_MARGIN_AREA]
< WINDOW_RIGHT_MARGIN_WIDTH (it->w))
{
PRODUCE_GLYPHS (it);
it->current_x += it->pixel_width;
}
it->area = TEXT_AREA;
}
/* Don't count these blanks really. It would let us insert a left
truncation glyph below and make us set the cursor on them, maybe. */
it->current_x = saved_x;
it->object = saved_object;
it->position = saved_pos;
it->what = saved_what;
it->face_id = saved_face_id;
}
}
/* Value is true if text starting at CHARPOS in current_buffer is
trailing whitespace. */
static bool
trailing_whitespace_p (ptrdiff_t charpos)
{
ptrdiff_t bytepos = CHAR_TO_BYTE (charpos);
int c = 0;
while (bytepos < ZV_BYTE
&& (c = FETCH_CHAR (bytepos),
c == ' ' || c == '\t'))
++bytepos;
if (bytepos >= ZV_BYTE || c == '\n' || c == '\r')
{
if (bytepos != PT_BYTE)
return true;
}
return false;
}
/* Highlight trailing whitespace, if any, in ROW. */
static void
highlight_trailing_whitespace (struct frame *f, struct glyph_row *row)
{
int used = row->used[TEXT_AREA];
if (used)
{
struct glyph *start = row->glyphs[TEXT_AREA];
struct glyph *glyph = start + used - 1;
if (row->reversed_p)
{
/* Right-to-left rows need to be processed in the opposite
direction, so swap the edge pointers. */
glyph = start;
start = row->glyphs[TEXT_AREA] + used - 1;
}
/* Skip over glyphs inserted to display the cursor at the
end of a line, for extending the face of the last glyph
to the end of the line on terminals, and for truncation
and continuation glyphs. */
if (!row->reversed_p)
{
while (glyph >= start
&& glyph->type == CHAR_GLYPH
&& NILP (glyph->object))
--glyph;
}
else
{
while (glyph <= start
&& glyph->type == CHAR_GLYPH
&& NILP (glyph->object))
++glyph;
}
/* If last glyph is a space or stretch, and it's trailing
whitespace, set the face of all trailing whitespace glyphs in
IT->glyph_row to `trailing-whitespace'. */
if ((row->reversed_p ? glyph <= start : glyph >= start)
&& BUFFERP (glyph->object)
&& (glyph->type == STRETCH_GLYPH
|| (glyph->type == CHAR_GLYPH
&& glyph->u.ch == ' '))
&& trailing_whitespace_p (glyph->charpos))
{
int face_id = lookup_named_face (f, Qtrailing_whitespace, false);
if (face_id < 0)
return;
if (!row->reversed_p)
{
while (glyph >= start
&& BUFFERP (glyph->object)
&& (glyph->type == STRETCH_GLYPH
|| (glyph->type == CHAR_GLYPH
&& glyph->u.ch == ' ')))
(glyph--)->face_id = face_id;
}
else
{
while (glyph <= start
&& BUFFERP (glyph->object)
&& (glyph->type == STRETCH_GLYPH
|| (glyph->type == CHAR_GLYPH
&& glyph->u.ch == ' ')))
(glyph++)->face_id = face_id;
}
}
}
}
/* Value is true if glyph row ROW should be
considered to hold the buffer position CHARPOS. */
static bool
row_for_charpos_p (struct glyph_row *row, ptrdiff_t charpos)
{
bool result = true;
if (charpos == CHARPOS (row->end.pos)
|| charpos == MATRIX_ROW_END_CHARPOS (row))
{
/* Suppose the row ends on a string.
Unless the row is continued, that means it ends on a newline
in the string. If it's anything other than a display string
(e.g., a before-string from an overlay), we don't want the
cursor there. (This heuristic seems to give the optimal
behavior for the various types of multi-line strings.)
One exception: if the string has `cursor' property on one of
its characters, we _do_ want the cursor there. */
if (CHARPOS (row->end.string_pos) >= 0)
{
if (row->continued_p)
result = true;
else
{
/* Check for `display' property. */
struct glyph *beg = row->glyphs[TEXT_AREA];
struct glyph *end = beg + row->used[TEXT_AREA] - 1;
struct glyph *glyph;
result = false;
for (glyph = end; glyph >= beg; --glyph)
if (STRINGP (glyph->object))
{
Lisp_Object prop
= Fget_char_property (make_number (charpos),
Qdisplay, Qnil);
result =
(!NILP (prop)
&& display_prop_string_p (prop, glyph->object));
/* If there's a `cursor' property on one of the
string's characters, this row is a cursor row,
even though this is not a display string. */
if (!result)
{
Lisp_Object s = glyph->object;
for ( ; glyph >= beg && EQ (glyph->object, s); --glyph)
{
ptrdiff_t gpos = glyph->charpos;
if (!NILP (Fget_char_property (make_number (gpos),
Qcursor, s)))
{
result = true;
break;
}
}
}
break;
}
}
}
else if (MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (row))
{
/* If the row ends in middle of a real character,
and the line is continued, we want the cursor here.
That's because CHARPOS (ROW->end.pos) would equal
PT if PT is before the character. */
if (!row->ends_in_ellipsis_p)
result = row->continued_p;
else
/* If the row ends in an ellipsis, then
CHARPOS (ROW->end.pos) will equal point after the
invisible text. We want that position to be displayed
after the ellipsis. */
result = false;
}
/* If the row ends at ZV, display the cursor at the end of that
row instead of at the start of the row below. */
else
result = row->ends_at_zv_p;
}
return result;
}
/* Value is true if glyph row ROW should be
used to hold the cursor. */
static bool
cursor_row_p (struct glyph_row *row)
{
return row_for_charpos_p (row, PT);
}
\f
/* Push the property PROP so that it will be rendered at the current
position in IT. Return true if PROP was successfully pushed, false
otherwise. Called from handle_line_prefix to handle the
`line-prefix' and `wrap-prefix' properties. */
static bool
push_prefix_prop (struct it *it, Lisp_Object prop)
{
struct text_pos pos =
STRINGP (it->string) ? it->current.string_pos : it->current.pos;
eassert (it->method == GET_FROM_BUFFER
|| it->method == GET_FROM_DISPLAY_VECTOR
|| it->method == GET_FROM_STRING
|| it->method == GET_FROM_IMAGE);
/* We need to save the current buffer/string position, so it will be
restored by pop_it, because iterate_out_of_display_property
depends on that being set correctly, but some situations leave
it->position not yet set when this function is called. */
push_it (it, &pos);
if (STRINGP (prop))
{
if (SCHARS (prop) == 0)
{
pop_it (it);
return false;
}
it->string = prop;
it->string_from_prefix_prop_p = true;
it->multibyte_p = STRING_MULTIBYTE (it->string);
it->current.overlay_string_index = -1;
IT_STRING_CHARPOS (*it) = IT_STRING_BYTEPOS (*it) = 0;
it->end_charpos = it->string_nchars = SCHARS (it->string);
it->method = GET_FROM_STRING;
it->stop_charpos = 0;
it->prev_stop = 0;
it->base_level_stop = 0;
/* Force paragraph direction to be that of the parent
buffer/string. */
if (it->bidi_p && it->bidi_it.paragraph_dir == R2L)
it->paragraph_embedding = it->bidi_it.paragraph_dir;
else
it->paragraph_embedding = L2R;
/* Set up the bidi iterator for this display string. */
if (it->bidi_p)
{
it->bidi_it.string.lstring = it->string;
it->bidi_it.string.s = NULL;
it->bidi_it.string.schars = it->end_charpos;
it->bidi_it.string.bufpos = IT_CHARPOS (*it);
it->bidi_it.string.from_disp_str = it->string_from_display_prop_p;
it->bidi_it.string.unibyte = !it->multibyte_p;
it->bidi_it.w = it->w;
bidi_init_it (0, 0, FRAME_WINDOW_P (it->f), &it->bidi_it);
}
}
else if (CONSP (prop) && EQ (XCAR (prop), Qspace))
{
it->method = GET_FROM_STRETCH;
it->object = prop;
}
#ifdef HAVE_WINDOW_SYSTEM
else if (IMAGEP (prop))
{
it->what = IT_IMAGE;
it->image_id = lookup_image (it->f, prop);
it->method = GET_FROM_IMAGE;
}
#endif /* HAVE_WINDOW_SYSTEM */
else
{
pop_it (it); /* bogus display property, give up */
return false;
}
return true;
}
/* Return the character-property PROP at the current position in IT. */
static Lisp_Object
get_it_property (struct it *it, Lisp_Object prop)
{
Lisp_Object position, object = it->object;
if (STRINGP (object))
position = make_number (IT_STRING_CHARPOS (*it));
else if (BUFFERP (object))
{
position = make_number (IT_CHARPOS (*it));
object = it->window;
}
else
return Qnil;
return Fget_char_property (position, prop, object);
}
/* See if there's a line- or wrap-prefix, and if so, push it on IT. */
static void
handle_line_prefix (struct it *it)
{
Lisp_Object prefix;
if (it->continuation_lines_width > 0)
{
prefix = get_it_property (it, Qwrap_prefix);
if (NILP (prefix))
prefix = Vwrap_prefix;
}
else
{
prefix = get_it_property (it, Qline_prefix);
if (NILP (prefix))
prefix = Vline_prefix;
}
if (! NILP (prefix) && push_prefix_prop (it, prefix))
{
/* If the prefix is wider than the window, and we try to wrap
it, it would acquire its own wrap prefix, and so on till the
iterator stack overflows. So, don't wrap the prefix. */
it->line_wrap = TRUNCATE;
it->avoid_cursor_p = true;
}
}
\f
/* Remove N glyphs at the start of a reversed IT->glyph_row. Called
only for R2L lines from display_line and display_string, when they
decide that too many glyphs were produced by PRODUCE_GLYPHS, and
the line/string needs to be continued on the next glyph row. */
static void
unproduce_glyphs (struct it *it, int n)
{
struct glyph *glyph, *end;
eassert (it->glyph_row);
eassert (it->glyph_row->reversed_p);
eassert (it->area == TEXT_AREA);
eassert (n <= it->glyph_row->used[TEXT_AREA]);
if (n > it->glyph_row->used[TEXT_AREA])
n = it->glyph_row->used[TEXT_AREA];
glyph = it->glyph_row->glyphs[TEXT_AREA] + n;
end = it->glyph_row->glyphs[TEXT_AREA] + it->glyph_row->used[TEXT_AREA];
for ( ; glyph < end; glyph++)
glyph[-n] = *glyph;
}
/* Find the positions in a bidi-reordered ROW to serve as ROW->minpos
and ROW->maxpos. */
static void
find_row_edges (struct it *it, struct glyph_row *row,
ptrdiff_t min_pos, ptrdiff_t min_bpos,
ptrdiff_t max_pos, ptrdiff_t max_bpos)
{
/* FIXME: Revisit this when glyph ``spilling'' in continuation
lines' rows is implemented for bidi-reordered rows. */
/* ROW->minpos is the value of min_pos, the minimal buffer position
we have in ROW, or ROW->start.pos if that is smaller. */
if (min_pos <= ZV && min_pos < row->start.pos.charpos)
SET_TEXT_POS (row->minpos, min_pos, min_bpos);
else
/* We didn't find buffer positions smaller than ROW->start, or
didn't find _any_ valid buffer positions in any of the glyphs,
so we must trust the iterator's computed positions. */
row->minpos = row->start.pos;
if (max_pos <= 0)
{
max_pos = CHARPOS (it->current.pos);
max_bpos = BYTEPOS (it->current.pos);
}
/* Here are the various use-cases for ending the row, and the
corresponding values for ROW->maxpos:
Line ends in a newline from buffer eol_pos + 1
Line is continued from buffer max_pos + 1
Line is truncated on right it->current.pos
Line ends in a newline from string max_pos + 1(*)
(*) + 1 only when line ends in a forward scan
Line is continued from string max_pos
Line is continued from display vector max_pos
Line is entirely from a string min_pos == max_pos
Line is entirely from a display vector min_pos == max_pos
Line that ends at ZV ZV
If you discover other use-cases, please add them here as
appropriate. */
if (row->ends_at_zv_p)
row->maxpos = it->current.pos;
else if (row->used[TEXT_AREA])
{
bool seen_this_string = false;
struct glyph_row *r1 = row - 1;
/* Did we see the same display string on the previous row? */
if (STRINGP (it->object)
/* this is not the first row */
&& row > it->w->desired_matrix->rows
/* previous row is not the header line */
&& !r1->mode_line_p
/* previous row also ends in a newline from a string */
&& r1->ends_in_newline_from_string_p)
{
struct glyph *start, *end;
/* Search for the last glyph of the previous row that came
from buffer or string. Depending on whether the row is
L2R or R2L, we need to process it front to back or the
other way round. */
if (!r1->reversed_p)
{
start = r1->glyphs[TEXT_AREA];
end = start + r1->used[TEXT_AREA];
/* Glyphs inserted by redisplay have nil as their object. */
while (end > start
&& NILP ((end - 1)->object)
&& (end - 1)->charpos <= 0)
--end;
if (end > start)
{
if (EQ ((end - 1)->object, it->object))
seen_this_string = true;
}
else
/* If all the glyphs of the previous row were inserted
by redisplay, it means the previous row was
produced from a single newline, which is only
possible if that newline came from the same string
as the one which produced this ROW. */
seen_this_string = true;
}
else
{
end = r1->glyphs[TEXT_AREA] - 1;
start = end + r1->used[TEXT_AREA];
while (end < start
&& NILP ((end + 1)->object)
&& (end + 1)->charpos <= 0)
++end;
if (end < start)
{
if (EQ ((end + 1)->object, it->object))
seen_this_string = true;
}
else
seen_this_string = true;
}
}
/* Take note of each display string that covers a newline only
once, the first time we see it. This is for when a display
string includes more than one newline in it. */
if (row->ends_in_newline_from_string_p && !seen_this_string)
{
/* If we were scanning the buffer forward when we displayed
the string, we want to account for at least one buffer
position that belongs to this row (position covered by
the display string), so that cursor positioning will
consider this row as a candidate when point is at the end
of the visual line represented by this row. This is not
required when scanning back, because max_pos will already
have a much larger value. */
if (CHARPOS (row->end.pos) > max_pos)
INC_BOTH (max_pos, max_bpos);
SET_TEXT_POS (row->maxpos, max_pos, max_bpos);
}
else if (CHARPOS (it->eol_pos) > 0)
SET_TEXT_POS (row->maxpos,
CHARPOS (it->eol_pos) + 1, BYTEPOS (it->eol_pos) + 1);
else if (row->continued_p)
{
/* If max_pos is different from IT's current position, it
means IT->method does not belong to the display element
at max_pos. However, it also means that the display
element at max_pos was displayed in its entirety on this
line, which is equivalent to saying that the next line
starts at the next buffer position. */
if (IT_CHARPOS (*it) == max_pos && it->method != GET_FROM_BUFFER)
SET_TEXT_POS (row->maxpos, max_pos, max_bpos);
else
{
INC_BOTH (max_pos, max_bpos);
SET_TEXT_POS (row->maxpos, max_pos, max_bpos);
}
}
else if (row->truncated_on_right_p)
/* display_line already called reseat_at_next_visible_line_start,
which puts the iterator at the beginning of the next line, in
the logical order. */
row->maxpos = it->current.pos;
else if (max_pos == min_pos && it->method != GET_FROM_BUFFER)
/* A line that is entirely from a string/image/stretch... */
row->maxpos = row->minpos;
else
emacs_abort ();
}
else
row->maxpos = it->current.pos;
}
/* Construct the glyph row IT->glyph_row in the desired matrix of
IT->w from text at the current position of IT. See dispextern.h
for an overview of struct it. Value is true if
IT->glyph_row displays text, as opposed to a line displaying ZV
only. */
static bool
display_line (struct it *it)
{
struct glyph_row *row = it->glyph_row;
Lisp_Object overlay_arrow_string;
struct it wrap_it;
void *wrap_data = NULL;
bool may_wrap = false;
int wrap_x UNINIT;
int wrap_row_used = -1;
int wrap_row_ascent UNINIT, wrap_row_height UNINIT;
int wrap_row_phys_ascent UNINIT, wrap_row_phys_height UNINIT;
int wrap_row_extra_line_spacing UNINIT;
ptrdiff_t wrap_row_min_pos UNINIT, wrap_row_min_bpos UNINIT;
ptrdiff_t wrap_row_max_pos UNINIT, wrap_row_max_bpos UNINIT;
int cvpos;
ptrdiff_t min_pos = ZV + 1, max_pos = 0;
ptrdiff_t min_bpos UNINIT, max_bpos UNINIT;
bool pending_handle_line_prefix = false;
/* We always start displaying at hpos zero even if hscrolled. */
eassert (it->hpos == 0 && it->current_x == 0);
if (MATRIX_ROW_VPOS (row, it->w->desired_matrix)
>= it->w->desired_matrix->nrows)
{
it->w->nrows_scale_factor++;
it->f->fonts_changed = true;
return false;
}
/* Clear the result glyph row and enable it. */
prepare_desired_row (it->w, row, false);
row->y = it->current_y;
row->start = it->start;
row->continuation_lines_width = it->continuation_lines_width;
row->displays_text_p = true;
row->starts_in_middle_of_char_p = it->starts_in_middle_of_char_p;
it->starts_in_middle_of_char_p = false;
/* Arrange the overlays nicely for our purposes. Usually, we call
display_line on only one line at a time, in which case this
can't really hurt too much, or we call it on lines which appear
one after another in the buffer, in which case all calls to
recenter_overlay_lists but the first will be pretty cheap. */
recenter_overlay_lists (current_buffer, IT_CHARPOS (*it));
/* Move over display elements that are not visible because we are
hscrolled. This may stop at an x-position < IT->first_visible_x
if the first glyph is partially visible or if we hit a line end. */
if (it->current_x < it->first_visible_x)
{
enum move_it_result move_result;
this_line_min_pos = row->start.pos;
move_result = move_it_in_display_line_to (it, ZV, it->first_visible_x,
MOVE_TO_POS | MOVE_TO_X);
/* If we are under a large hscroll, move_it_in_display_line_to
could hit the end of the line without reaching
it->first_visible_x. Pretend that we did reach it. This is
especially important on a TTY, where we will call
extend_face_to_end_of_line, which needs to know how many
blank glyphs to produce. */
if (it->current_x < it->first_visible_x
&& (move_result == MOVE_NEWLINE_OR_CR
|| move_result == MOVE_POS_MATCH_OR_ZV))
it->current_x = it->first_visible_x;
/* Record the smallest positions seen while we moved over
display elements that are not visible. This is needed by
redisplay_internal for optimizing the case where the cursor
stays inside the same line. The rest of this function only
considers positions that are actually displayed, so
RECORD_MAX_MIN_POS will not otherwise record positions that
are hscrolled to the left of the left edge of the window. */
min_pos = CHARPOS (this_line_min_pos);
min_bpos = BYTEPOS (this_line_min_pos);
}
else if (it->area == TEXT_AREA)
{
/* We only do this when not calling move_it_in_display_line_to
above, because that function calls itself handle_line_prefix. */
handle_line_prefix (it);
}
else
{
/* Line-prefix and wrap-prefix are always displayed in the text
area. But if this is the first call to display_line after
init_iterator, the iterator might have been set up to write
into a marginal area, e.g. if the line begins with some
display property that writes to the margins. So we need to
wait with the call to handle_line_prefix until whatever
writes to the margin has done its job. */
pending_handle_line_prefix = true;
}
/* Get the initial row height. This is either the height of the
text hscrolled, if there is any, or zero. */
row->ascent = it->max_ascent;
row->height = it->max_ascent + it->max_descent;
row->phys_ascent = it->max_phys_ascent;
row->phys_height = it->max_phys_ascent + it->max_phys_descent;
row->extra_line_spacing = it->max_extra_line_spacing;
/* Utility macro to record max and min buffer positions seen until now. */
#define RECORD_MAX_MIN_POS(IT) \
do \
{ \
bool composition_p \
= !STRINGP ((IT)->string) && ((IT)->what == IT_COMPOSITION); \
ptrdiff_t current_pos = \
composition_p ? (IT)->cmp_it.charpos \
: IT_CHARPOS (*(IT)); \
ptrdiff_t current_bpos = \
composition_p ? CHAR_TO_BYTE (current_pos) \
: IT_BYTEPOS (*(IT)); \
if (current_pos < min_pos) \
{ \
min_pos = current_pos; \
min_bpos = current_bpos; \
} \
if (IT_CHARPOS (*it) > max_pos) \
{ \
max_pos = IT_CHARPOS (*it); \
max_bpos = IT_BYTEPOS (*it); \
} \
} \
while (false)
/* Loop generating characters. The loop is left with IT on the next
character to display. */
while (true)
{
int n_glyphs_before, hpos_before, x_before;
int x, nglyphs;
int ascent = 0, descent = 0, phys_ascent = 0, phys_descent = 0;
/* Retrieve the next thing to display. Value is false if end of
buffer reached. */
if (!get_next_display_element (it))
{
/* Maybe add a space at the end of this line that is used to
display the cursor there under X. Set the charpos of the
first glyph of blank lines not corresponding to any text
to -1. */
if (IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
row->exact_window_width_line_p = true;
else if ((append_space_for_newline (it, true)
&& row->used[TEXT_AREA] == 1)
|| row->used[TEXT_AREA] == 0)
{
row->glyphs[TEXT_AREA]->charpos = -1;
row->displays_text_p = false;
if (!NILP (BVAR (XBUFFER (it->w->contents), indicate_empty_lines))
&& (!MINI_WINDOW_P (it->w)
|| (minibuf_level && EQ (it->window, minibuf_window))))
row->indicate_empty_line_p = true;
}
it->continuation_lines_width = 0;
row->ends_at_zv_p = true;
/* A row that displays right-to-left text must always have
its last face extended all the way to the end of line,
even if this row ends in ZV, because we still write to
the screen left to right. We also need to extend the
last face if the default face is remapped to some
different face, otherwise the functions that clear
portions of the screen will clear with the default face's
background color. */
if (row->reversed_p
|| lookup_basic_face (it->f, DEFAULT_FACE_ID) != DEFAULT_FACE_ID)
extend_face_to_end_of_line (it);
break;
}
/* Now, get the metrics of what we want to display. This also
generates glyphs in `row' (which is IT->glyph_row). */
n_glyphs_before = row->used[TEXT_AREA];
x = it->current_x;
/* Remember the line height so far in case the next element doesn't
fit on the line. */
if (it->line_wrap != TRUNCATE)
{
ascent = it->max_ascent;
descent = it->max_descent;
phys_ascent = it->max_phys_ascent;
phys_descent = it->max_phys_descent;
if (it->line_wrap == WORD_WRAP && it->area == TEXT_AREA)
{
if (IT_DISPLAYING_WHITESPACE (it))
may_wrap = true;
else if (may_wrap)
{
SAVE_IT (wrap_it, *it, wrap_data);
wrap_x = x;
wrap_row_used = row->used[TEXT_AREA];
wrap_row_ascent = row->ascent;
wrap_row_height = row->height;
wrap_row_phys_ascent = row->phys_ascent;
wrap_row_phys_height = row->phys_height;
wrap_row_extra_line_spacing = row->extra_line_spacing;
wrap_row_min_pos = min_pos;
wrap_row_min_bpos = min_bpos;
wrap_row_max_pos = max_pos;
wrap_row_max_bpos = max_bpos;
may_wrap = false;
}
}
}
PRODUCE_GLYPHS (it);
/* If this display element was in marginal areas, continue with
the next one. */
if (it->area != TEXT_AREA)
{
row->ascent = max (row->ascent, it->max_ascent);
row->height = max (row->height, it->max_ascent + it->max_descent);
row->phys_ascent = max (row->phys_ascent, it->max_phys_ascent);
row->phys_height = max (row->phys_height,
it->max_phys_ascent + it->max_phys_descent);
row->extra_line_spacing = max (row->extra_line_spacing,
it->max_extra_line_spacing);
set_iterator_to_next (it, true);
/* If we didn't handle the line/wrap prefix above, and the
call to set_iterator_to_next just switched to TEXT_AREA,
process the prefix now. */
if (it->area == TEXT_AREA && pending_handle_line_prefix)
{
pending_handle_line_prefix = false;
handle_line_prefix (it);
}
continue;
}
/* Does the display element fit on the line? If we truncate
lines, we should draw past the right edge of the window. If
we don't truncate, we want to stop so that we can display the
continuation glyph before the right margin. If lines are
continued, there are two possible strategies for characters
resulting in more than 1 glyph (e.g. tabs): Display as many
glyphs as possible in this line and leave the rest for the
continuation line, or display the whole element in the next
line. Original redisplay did the former, so we do it also. */
nglyphs = row->used[TEXT_AREA] - n_glyphs_before;
hpos_before = it->hpos;
x_before = x;
if (/* Not a newline. */
nglyphs > 0
/* Glyphs produced fit entirely in the line. */
&& it->current_x < it->last_visible_x)
{
it->hpos += nglyphs;
row->ascent = max (row->ascent, it->max_ascent);
row->height = max (row->height, it->max_ascent + it->max_descent);
row->phys_ascent = max (row->phys_ascent, it->max_phys_ascent);
row->phys_height = max (row->phys_height,
it->max_phys_ascent + it->max_phys_descent);
row->extra_line_spacing = max (row->extra_line_spacing,
it->max_extra_line_spacing);
if (it->current_x - it->pixel_width < it->first_visible_x
/* In R2L rows, we arrange in extend_face_to_end_of_line
to add a right offset to the line, by a suitable
change to the stretch glyph that is the leftmost
glyph of the line. */
&& !row->reversed_p)
row->x = x - it->first_visible_x;
/* Record the maximum and minimum buffer positions seen so
far in glyphs that will be displayed by this row. */
if (it->bidi_p)
RECORD_MAX_MIN_POS (it);
}
else
{
int i, new_x;
struct glyph *glyph;
for (i = 0; i < nglyphs; ++i, x = new_x)
{
/* Identify the glyphs added by the last call to
PRODUCE_GLYPHS. In R2L rows, they are prepended to
the previous glyphs. */
if (!row->reversed_p)
glyph = row->glyphs[TEXT_AREA] + n_glyphs_before + i;
else
glyph = row->glyphs[TEXT_AREA] + nglyphs - 1 - i;
new_x = x + glyph->pixel_width;
if (/* Lines are continued. */
it->line_wrap != TRUNCATE
&& (/* Glyph doesn't fit on the line. */
new_x > it->last_visible_x
/* Or it fits exactly on a window system frame. */
|| (new_x == it->last_visible_x
&& FRAME_WINDOW_P (it->f)
&& (row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)))))
{
/* End of a continued line. */
if (it->hpos == 0
|| (new_x == it->last_visible_x
&& FRAME_WINDOW_P (it->f)
&& (row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w))))
{
/* Current glyph is the only one on the line or
fits exactly on the line. We must continue
the line because we can't draw the cursor
after the glyph. */
row->continued_p = true;
it->current_x = new_x;
it->continuation_lines_width += new_x;
++it->hpos;
if (i == nglyphs - 1)
{
/* If line-wrap is on, check if a previous
wrap point was found. */
if (!IT_OVERFLOW_NEWLINE_INTO_FRINGE (it)
&& wrap_row_used > 0
/* Even if there is a previous wrap
point, continue the line here as
usual, if (i) the previous character
was a space or tab AND (ii) the
current character is not. */
&& (!may_wrap
|| IT_DISPLAYING_WHITESPACE (it)))
goto back_to_wrap;
/* Record the maximum and minimum buffer
positions seen so far in glyphs that will be
displayed by this row. */
if (it->bidi_p)
RECORD_MAX_MIN_POS (it);
set_iterator_to_next (it, true);
if (IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
{
if (!get_next_display_element (it))
{
row->exact_window_width_line_p = true;
it->continuation_lines_width = 0;
row->continued_p = false;
row->ends_at_zv_p = true;
}
else if (ITERATOR_AT_END_OF_LINE_P (it))
{
row->continued_p = false;
row->exact_window_width_line_p = true;
}
/* If line-wrap is on, check if a
previous wrap point was found. */
else if (wrap_row_used > 0
/* Even if there is a previous wrap
point, continue the line here as
usual, if (i) the previous character
was a space or tab AND (ii) the
current character is not. */
&& (!may_wrap
|| IT_DISPLAYING_WHITESPACE (it)))
goto back_to_wrap;
}
}
else if (it->bidi_p)
RECORD_MAX_MIN_POS (it);
if (WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
|| WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0)
extend_face_to_end_of_line (it);
}
else if (CHAR_GLYPH_PADDING_P (*glyph)
&& !FRAME_WINDOW_P (it->f))
{
/* A padding glyph that doesn't fit on this line.
This means the whole character doesn't fit
on the line. */
if (row->reversed_p)
unproduce_glyphs (it, row->used[TEXT_AREA]
- n_glyphs_before);
row->used[TEXT_AREA] = n_glyphs_before;
/* Fill the rest of the row with continuation
glyphs like in 20.x. */
while (row->glyphs[TEXT_AREA] + row->used[TEXT_AREA]
< row->glyphs[1 + TEXT_AREA])
produce_special_glyphs (it, IT_CONTINUATION);
row->continued_p = true;
it->current_x = x_before;
it->continuation_lines_width += x_before;
/* Restore the height to what it was before the
element not fitting on the line. */
it->max_ascent = ascent;
it->max_descent = descent;
it->max_phys_ascent = phys_ascent;
it->max_phys_descent = phys_descent;
if (WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
|| WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0)
extend_face_to_end_of_line (it);
}
else if (wrap_row_used > 0)
{
back_to_wrap:
if (row->reversed_p)
unproduce_glyphs (it,
row->used[TEXT_AREA] - wrap_row_used);
RESTORE_IT (it, &wrap_it, wrap_data);
it->continuation_lines_width += wrap_x;
row->used[TEXT_AREA] = wrap_row_used;
row->ascent = wrap_row_ascent;
row->height = wrap_row_height;
row->phys_ascent = wrap_row_phys_ascent;
row->phys_height = wrap_row_phys_height;
row->extra_line_spacing = wrap_row_extra_line_spacing;
min_pos = wrap_row_min_pos;
min_bpos = wrap_row_min_bpos;
max_pos = wrap_row_max_pos;
max_bpos = wrap_row_max_bpos;
row->continued_p = true;
row->ends_at_zv_p = false;
row->exact_window_width_line_p = false;
it->continuation_lines_width += x;
/* Make sure that a non-default face is extended
up to the right margin of the window. */
extend_face_to_end_of_line (it);
}
else if (it->c == '\t' && FRAME_WINDOW_P (it->f))
{
/* A TAB that extends past the right edge of the
window. This produces a single glyph on
window system frames. We leave the glyph in
this row and let it fill the row, but don't
consume the TAB. */
if ((row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)) == 0)
produce_special_glyphs (it, IT_CONTINUATION);
it->continuation_lines_width += it->last_visible_x;
row->ends_in_middle_of_char_p = true;
row->continued_p = true;
glyph->pixel_width = it->last_visible_x - x;
it->starts_in_middle_of_char_p = true;
if (WINDOW_LEFT_MARGIN_WIDTH (it->w) > 0
|| WINDOW_RIGHT_MARGIN_WIDTH (it->w) > 0)
extend_face_to_end_of_line (it);
}
else
{
/* Something other than a TAB that draws past
the right edge of the window. Restore
positions to values before the element. */
if (row->reversed_p)
unproduce_glyphs (it, row->used[TEXT_AREA]
- (n_glyphs_before + i));
row->used[TEXT_AREA] = n_glyphs_before + i;
/* Display continuation glyphs. */
it->current_x = x_before;
it->continuation_lines_width += x;
if (!FRAME_WINDOW_P (it->f)
|| (row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)) == 0)
produce_special_glyphs (it, IT_CONTINUATION);
row->continued_p = true;
extend_face_to_end_of_line (it);
if (nglyphs > 1 && i > 0)
{
row->ends_in_middle_of_char_p = true;
it->starts_in_middle_of_char_p = true;
}
/* Restore the height to what it was before the
element not fitting on the line. */
it->max_ascent = ascent;
it->max_descent = descent;
it->max_phys_ascent = phys_ascent;
it->max_phys_descent = phys_descent;
}
break;
}
else if (new_x > it->first_visible_x)
{
/* Increment number of glyphs actually displayed. */
++it->hpos;
/* Record the maximum and minimum buffer positions
seen so far in glyphs that will be displayed by
this row. */
if (it->bidi_p)
RECORD_MAX_MIN_POS (it);
if (x < it->first_visible_x && !row->reversed_p)
/* Glyph is partially visible, i.e. row starts at
negative X position. Don't do that in R2L
rows, where we arrange to add a right offset to
the line in extend_face_to_end_of_line, by a
suitable change to the stretch glyph that is
the leftmost glyph of the line. */
row->x = x - it->first_visible_x;
/* When the last glyph of an R2L row only fits
partially on the line, we need to set row->x to a
negative offset, so that the leftmost glyph is
the one that is partially visible. But if we are
going to produce the truncation glyph, this will
be taken care of in produce_special_glyphs. */
if (row->reversed_p
&& new_x > it->last_visible_x
&& !(it->line_wrap == TRUNCATE
&& WINDOW_LEFT_FRINGE_WIDTH (it->w) == 0))
{
eassert (FRAME_WINDOW_P (it->f));
row->x = it->last_visible_x - new_x;
}
}
else
{
/* Glyph is completely off the left margin of the
window. This should not happen because of the
move_it_in_display_line at the start of this
function, unless the text display area of the
window is empty. */
eassert (it->first_visible_x <= it->last_visible_x);
}
}
/* Even if this display element produced no glyphs at all,
we want to record its position. */
if (it->bidi_p && nglyphs == 0)
RECORD_MAX_MIN_POS (it);
row->ascent = max (row->ascent, it->max_ascent);
row->height = max (row->height, it->max_ascent + it->max_descent);
row->phys_ascent = max (row->phys_ascent, it->max_phys_ascent);
row->phys_height = max (row->phys_height,
it->max_phys_ascent + it->max_phys_descent);
row->extra_line_spacing = max (row->extra_line_spacing,
it->max_extra_line_spacing);
/* End of this display line if row is continued. */
if (row->continued_p || row->ends_at_zv_p)
break;
}
at_end_of_line:
/* Is this a line end? If yes, we're also done, after making
sure that a non-default face is extended up to the right
margin of the window. */
if (ITERATOR_AT_END_OF_LINE_P (it))
{
int used_before = row->used[TEXT_AREA];
row->ends_in_newline_from_string_p = STRINGP (it->object);
/* Add a space at the end of the line that is used to
display the cursor there. */
if (!IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
append_space_for_newline (it, false);
/* Extend the face to the end of the line. */
extend_face_to_end_of_line (it);
/* Make sure we have the position. */
if (used_before == 0)
row->glyphs[TEXT_AREA]->charpos = CHARPOS (it->position);
/* Record the position of the newline, for use in
find_row_edges. */
it->eol_pos = it->current.pos;
/* Consume the line end. This skips over invisible lines. */
set_iterator_to_next (it, true);
it->continuation_lines_width = 0;
break;
}
/* Proceed with next display element. Note that this skips
over lines invisible because of selective display. */
set_iterator_to_next (it, true);
/* If we truncate lines, we are done when the last displayed
glyphs reach past the right margin of the window. */
if (it->line_wrap == TRUNCATE
&& ((FRAME_WINDOW_P (it->f)
/* Images are preprocessed in produce_image_glyph such
that they are cropped at the right edge of the
window, so an image glyph will always end exactly at
last_visible_x, even if there's no right fringe. */
&& ((row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w))
|| it->what == IT_IMAGE))
? (it->current_x >= it->last_visible_x)
: (it->current_x > it->last_visible_x)))
{
/* Maybe add truncation glyphs. */
if (!FRAME_WINDOW_P (it->f)
|| (row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (it->w)
: WINDOW_RIGHT_FRINGE_WIDTH (it->w)) == 0)
{
int i, n;
if (!row->reversed_p)
{
for (i = row->used[TEXT_AREA] - 1; i > 0; --i)
if (!CHAR_GLYPH_PADDING_P (row->glyphs[TEXT_AREA][i]))
break;
}
else
{
for (i = 0; i < row->used[TEXT_AREA]; i++)
if (!CHAR_GLYPH_PADDING_P (row->glyphs[TEXT_AREA][i]))
break;
/* Remove any padding glyphs at the front of ROW, to
make room for the truncation glyphs we will be
adding below. The loop below always inserts at
least one truncation glyph, so also remove the
last glyph added to ROW. */
unproduce_glyphs (it, i + 1);
/* Adjust i for the loop below. */
i = row->used[TEXT_AREA] - (i + 1);
}
/* produce_special_glyphs overwrites the last glyph, so
we don't want that if we want to keep that last
glyph, which means it's an image. */
if (it->current_x > it->last_visible_x)
{
it->current_x = x_before;
if (!FRAME_WINDOW_P (it->f))
{
for (n = row->used[TEXT_AREA]; i < n; ++i)
{
row->used[TEXT_AREA] = i;
produce_special_glyphs (it, IT_TRUNCATION);
}
}
else
{
row->used[TEXT_AREA] = i;
produce_special_glyphs (it, IT_TRUNCATION);
}
it->hpos = hpos_before;
}
}
else if (IT_OVERFLOW_NEWLINE_INTO_FRINGE (it))
{
/* Don't truncate if we can overflow newline into fringe. */
if (!get_next_display_element (it))
{
it->continuation_lines_width = 0;
row->ends_at_zv_p = true;
row->exact_window_width_line_p = true;
break;
}
if (ITERATOR_AT_END_OF_LINE_P (it))
{
row->exact_window_width_line_p = true;
goto at_end_of_line;
}
it->current_x = x_before;
it->hpos = hpos_before;
}
row->truncated_on_right_p = true;
it->continuation_lines_width = 0;
reseat_at_next_visible_line_start (it, false);
/* We insist below that IT's position be at ZV because in
bidi-reordered lines the character at visible line start
might not be the character that follows the newline in
the logical order. */
if (IT_BYTEPOS (*it) > BEG_BYTE)
row->ends_at_zv_p =
IT_BYTEPOS (*it) >= ZV_BYTE && FETCH_BYTE (ZV_BYTE - 1) != '\n';
else
row->ends_at_zv_p = false;
break;
}
}
if (wrap_data)
bidi_unshelve_cache (wrap_data, true);
/* If line is not empty and hscrolled, maybe insert truncation glyphs
at the left window margin. */
if (it->first_visible_x
&& IT_CHARPOS (*it) != CHARPOS (row->start.pos))
{
if (!FRAME_WINDOW_P (it->f)
|| (((row->reversed_p
? WINDOW_RIGHT_FRINGE_WIDTH (it->w)
: WINDOW_LEFT_FRINGE_WIDTH (it->w)) == 0)
/* Don't let insert_left_trunc_glyphs overwrite the
first glyph of the row if it is an image. */
&& row->glyphs[TEXT_AREA]->type != IMAGE_GLYPH))
insert_left_trunc_glyphs (it);
row->truncated_on_left_p = true;
}
/* Remember the position at which this line ends.
BIDI Note: any code that needs MATRIX_ROW_START/END_CHARPOS
cannot be before the call to find_row_edges below, since that is
where these positions are determined. */
row->end = it->current;
if (!it->bidi_p)
{
row->minpos = row->start.pos;
row->maxpos = row->end.pos;
}
else
{
/* ROW->minpos and ROW->maxpos must be the smallest and
`1 + the largest' buffer positions in ROW. But if ROW was
bidi-reordered, these two positions can be anywhere in the
row, so we must determine them now. */
find_row_edges (it, row, min_pos, min_bpos, max_pos, max_bpos);
}
/* If the start of this line is the overlay arrow-position, then
mark this glyph row as the one containing the overlay arrow.
This is clearly a mess with variable size fonts. It would be
better to let it be displayed like cursors under X. */
if ((MATRIX_ROW_DISPLAYS_TEXT_P (row) || !overlay_arrow_seen)
&& (overlay_arrow_string = overlay_arrow_at_row (it, row),
!NILP (overlay_arrow_string)))
{
/* Overlay arrow in window redisplay is a fringe bitmap. */
if (STRINGP (overlay_arrow_string))
{
struct glyph_row *arrow_row
= get_overlay_arrow_glyph_row (it->w, overlay_arrow_string);
struct glyph *glyph = arrow_row->glyphs[TEXT_AREA];
struct glyph *arrow_end = glyph + arrow_row->used[TEXT_AREA];
struct glyph *p = row->glyphs[TEXT_AREA];
struct glyph *p2, *end;
/* Copy the arrow glyphs. */
while (glyph < arrow_end)
*p++ = *glyph++;
/* Throw away padding glyphs. */
p2 = p;
end = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA];
while (p2 < end && CHAR_GLYPH_PADDING_P (*p2))
++p2;
if (p2 > p)
{
while (p2 < end)
*p++ = *p2++;
row->used[TEXT_AREA] = p2 - row->glyphs[TEXT_AREA];
}
}
else
{
eassert (INTEGERP (overlay_arrow_string));
row->overlay_arrow_bitmap = XINT (overlay_arrow_string);
}
overlay_arrow_seen = true;
}
/* Highlight trailing whitespace. */
if (!NILP (Vshow_trailing_whitespace))
highlight_trailing_whitespace (it->f, it->glyph_row);
/* Compute pixel dimensions of this line. */
compute_line_metrics (it);
/* Implementation note: No changes in the glyphs of ROW or in their
faces can be done past this point, because compute_line_metrics
computes ROW's hash value and stores it within the glyph_row
structure. */
/* Record whether this row ends inside an ellipsis. */
row->ends_in_ellipsis_p
= (it->method == GET_FROM_DISPLAY_VECTOR
&& it->ellipsis_p);
/* Save fringe bitmaps in this row. */
row->left_user_fringe_bitmap = it->left_user_fringe_bitmap;
row->left_user_fringe_face_id = it->left_user_fringe_face_id;
row->right_user_fringe_bitmap = it->right_user_fringe_bitmap;
row->right_user_fringe_face_id = it->right_user_fringe_face_id;
it->left_user_fringe_bitmap = 0;
it->left_user_fringe_face_id = 0;
it->right_user_fringe_bitmap = 0;
it->right_user_fringe_face_id = 0;
/* Maybe set the cursor. */
cvpos = it->w->cursor.vpos;
if ((cvpos < 0
/* In bidi-reordered rows, keep checking for proper cursor
position even if one has been found already, because buffer
positions in such rows change non-linearly with ROW->VPOS,
when a line is continued. One exception: when we are at ZV,
display cursor on the first suitable glyph row, since all
the empty rows after that also have their position set to ZV. */
/* FIXME: Revisit this when glyph ``spilling'' in continuation
lines' rows is implemented for bidi-reordered rows. */
|| (it->bidi_p
&& !MATRIX_ROW (it->w->desired_matrix, cvpos)->ends_at_zv_p))
&& PT >= MATRIX_ROW_START_CHARPOS (row)
&& PT <= MATRIX_ROW_END_CHARPOS (row)
&& cursor_row_p (row))
set_cursor_from_row (it->w, row, it->w->desired_matrix, 0, 0, 0, 0);
/* Prepare for the next line. This line starts horizontally at (X
HPOS) = (0 0). Vertical positions are incremented. As a
convenience for the caller, IT->glyph_row is set to the next
row to be used. */
it->current_x = it->hpos = 0;
it->current_y += row->height;
SET_TEXT_POS (it->eol_pos, 0, 0);
++it->vpos;
++it->glyph_row;
/* The next row should by default use the same value of the
reversed_p flag as this one. set_iterator_to_next decides when
it's a new paragraph, and PRODUCE_GLYPHS recomputes the value of
the flag accordingly. */
if (it->glyph_row < MATRIX_BOTTOM_TEXT_ROW (it->w->desired_matrix, it->w))
it->glyph_row->reversed_p = row->reversed_p;
it->start = row->end;
return MATRIX_ROW_DISPLAYS_TEXT_P (row);
#undef RECORD_MAX_MIN_POS
}
DEFUN ("current-bidi-paragraph-direction", Fcurrent_bidi_paragraph_direction,
Scurrent_bidi_paragraph_direction, 0, 1, 0,
doc: /* Return paragraph direction at point in BUFFER.
Value is either `left-to-right' or `right-to-left'.
If BUFFER is omitted or nil, it defaults to the current buffer.
Paragraph direction determines how the text in the paragraph is displayed.
In left-to-right paragraphs, text begins at the left margin of the window
and the reading direction is generally left to right. In right-to-left
paragraphs, text begins at the right margin and is read from right to left.
See also `bidi-paragraph-direction'. */)
(Lisp_Object buffer)
{
struct buffer *buf = current_buffer;
struct buffer *old = buf;
if (! NILP (buffer))
{
CHECK_BUFFER (buffer);
buf = XBUFFER (buffer);
}
if (NILP (BVAR (buf, bidi_display_reordering))
|| NILP (BVAR (buf, enable_multibyte_characters))
/* When we are loading loadup.el, the character property tables
needed for bidi iteration are not yet available. */
|| redisplay__inhibit_bidi)
return Qleft_to_right;
else if (!NILP (BVAR (buf, bidi_paragraph_direction)))
return BVAR (buf, bidi_paragraph_direction);
else
{
/* Determine the direction from buffer text. We could try to
use current_matrix if it is up to date, but this seems fast
enough as it is. */
struct bidi_it itb;
ptrdiff_t pos = BUF_PT (buf);
ptrdiff_t bytepos = BUF_PT_BYTE (buf);
int c;
void *itb_data = bidi_shelve_cache ();
set_buffer_temp (buf);
/* bidi_paragraph_init finds the base direction of the paragraph
by searching forward from paragraph start. We need the base
direction of the current or _previous_ paragraph, so we need
to make sure we are within that paragraph. To that end, find
the previous non-empty line. */
if (pos >= ZV && pos > BEGV)
DEC_BOTH (pos, bytepos);
AUTO_STRING (trailing_white_space, "[\f\t ]*\n");
if (fast_looking_at (trailing_white_space,
pos, bytepos, ZV, ZV_BYTE, Qnil) > 0)
{
while ((c = FETCH_BYTE (bytepos)) == '\n'
|| c == ' ' || c == '\t' || c == '\f')
{
if (bytepos <= BEGV_BYTE)
break;
bytepos--;
pos--;
}
while (!CHAR_HEAD_P (FETCH_BYTE (bytepos)))
bytepos--;
}
bidi_init_it (pos, bytepos, FRAME_WINDOW_P (SELECTED_FRAME ()), &itb);
itb.paragraph_dir = NEUTRAL_DIR;
itb.string.s = NULL;
itb.string.lstring = Qnil;
itb.string.bufpos = 0;
itb.string.from_disp_str = false;
itb.string.unibyte = false;
/* We have no window to use here for ignoring window-specific
overlays. Using NULL for window pointer will cause
compute_display_string_pos to use the current buffer. */
itb.w = NULL;
bidi_paragraph_init (NEUTRAL_DIR, &itb, true);
bidi_unshelve_cache (itb_data, false);
set_buffer_temp (old);
switch (itb.paragraph_dir)
{
case L2R:
return Qleft_to_right;
break;
case R2L:
return Qright_to_left;
break;
default:
emacs_abort ();
}
}
}
DEFUN ("bidi-find-overridden-directionality",
Fbidi_find_overridden_directionality,
Sbidi_find_overridden_directionality, 2, 3, 0,
doc: /* Return position between FROM and TO where directionality was overridden.
This function returns the first character position in the specified
region of OBJECT where there is a character whose `bidi-class' property
is `L', but which was forced to display as `R' by a directional
override, and likewise with characters whose `bidi-class' is `R'
or `AL' that were forced to display as `L'.
If no such character is found, the function returns nil.
OBJECT is a Lisp string or buffer to search for overridden
directionality, and defaults to the current buffer if nil or omitted.
OBJECT can also be a window, in which case the function will search
the buffer displayed in that window. Passing the window instead of
a buffer is preferable when the buffer is displayed in some window,
because this function will then be able to correctly account for
window-specific overlays, which can affect the results.
Strong directional characters `L', `R', and `AL' can have their
intrinsic directionality overridden by directional override
control characters RLO (u+202e) and LRO (u+202d). See the
function `get-char-code-property' for a way to inquire about
the `bidi-class' property of a character. */)
(Lisp_Object from, Lisp_Object to, Lisp_Object object)
{
struct buffer *buf = current_buffer;
struct buffer *old = buf;
struct window *w = NULL;
bool frame_window_p = FRAME_WINDOW_P (SELECTED_FRAME ());
struct bidi_it itb;
ptrdiff_t from_pos, to_pos, from_bpos;
void *itb_data;
if (!NILP (object))
{
if (BUFFERP (object))
buf = XBUFFER (object);
else if (WINDOWP (object))
{
w = decode_live_window (object);
buf = XBUFFER (w->contents);
frame_window_p = FRAME_WINDOW_P (XFRAME (w->frame));
}
else
CHECK_STRING (object);
}
if (STRINGP (object))
{
/* Characters in unibyte strings are always treated by bidi.c as
strong LTR. */
if (!STRING_MULTIBYTE (object)
/* When we are loading loadup.el, the character property
tables needed for bidi iteration are not yet
available. */
|| redisplay__inhibit_bidi)
return Qnil;
validate_subarray (object, from, to, SCHARS (object), &from_pos, &to_pos);
if (from_pos >= SCHARS (object))
return Qnil;
/* Set up the bidi iterator. */
itb_data = bidi_shelve_cache ();
itb.paragraph_dir = NEUTRAL_DIR;
itb.string.lstring = object;
itb.string.s = NULL;
itb.string.schars = SCHARS (object);
itb.string.bufpos = 0;
itb.string.from_disp_str = false;
itb.string.unibyte = false;
itb.w = w;
bidi_init_it (0, 0, frame_window_p, &itb);
}
else
{
/* Nothing this fancy can happen in unibyte buffers, or in a
buffer that disabled reordering, or if FROM is at EOB. */
if (NILP (BVAR (buf, bidi_display_reordering))
|| NILP (BVAR (buf, enable_multibyte_characters))
/* When we are loading loadup.el, the character property
tables needed for bidi iteration are not yet
available. */
|| redisplay__inhibit_bidi)
return Qnil;
set_buffer_temp (buf);
validate_region (&from, &to);
from_pos = XINT (from);
to_pos = XINT (to);
if (from_pos >= ZV)
return Qnil;
/* Set up the bidi iterator. */
itb_data = bidi_shelve_cache ();
from_bpos = CHAR_TO_BYTE (from_pos);
if (from_pos == BEGV)
{
itb.charpos = BEGV;
itb.bytepos = BEGV_BYTE;
}
else if (FETCH_CHAR (from_bpos - 1) == '\n')
{
itb.charpos = from_pos;
itb.bytepos = from_bpos;
}
else
itb.charpos = find_newline_no_quit (from_pos, CHAR_TO_BYTE (from_pos),
-1, &itb.bytepos);
itb.paragraph_dir = NEUTRAL_DIR;
itb.string.s = NULL;
itb.string.lstring = Qnil;
itb.string.bufpos = 0;
itb.string.from_disp_str = false;
itb.string.unibyte = false;
itb.w = w;
bidi_init_it (itb.charpos, itb.bytepos, frame_window_p, &itb);
}
ptrdiff_t found;
do {
/* For the purposes of this function, the actual base direction of
the paragraph doesn't matter, so just set it to L2R. */
bidi_paragraph_init (L2R, &itb, false);
while ((found = bidi_find_first_overridden (&itb)) < from_pos)
;
} while (found == ZV && itb.ch == '\n' && itb.charpos < to_pos);
bidi_unshelve_cache (itb_data, false);
set_buffer_temp (old);
return (from_pos <= found && found < to_pos) ? make_number (found) : Qnil;
}
DEFUN ("move-point-visually", Fmove_point_visually,
Smove_point_visually, 1, 1, 0,
doc: /* Move point in the visual order in the specified DIRECTION.
DIRECTION can be 1, meaning move to the right, or -1, which moves to the
left.
Value is the new character position of point. */)
(Lisp_Object direction)
{
struct window *w = XWINDOW (selected_window);
struct buffer *b = XBUFFER (w->contents);
struct glyph_row *row;
int dir;
Lisp_Object paragraph_dir;
#define ROW_GLYPH_NEWLINE_P(ROW,GLYPH) \
(!(ROW)->continued_p \
&& NILP ((GLYPH)->object) \
&& (GLYPH)->type == CHAR_GLYPH \
&& (GLYPH)->u.ch == ' ' \
&& (GLYPH)->charpos >= 0 \
&& !(GLYPH)->avoid_cursor_p)
CHECK_NUMBER (direction);
dir = XINT (direction);
if (dir > 0)
dir = 1;
else
dir = -1;
/* If current matrix is up-to-date, we can use the information
recorded in the glyphs, at least as long as the goal is on the
screen. */
if (w->window_end_valid
&& !windows_or_buffers_changed
&& b
&& !b->clip_changed
&& !b->prevent_redisplay_optimizations_p
&& !window_outdated (w)
/* We rely below on the cursor coordinates to be up to date, but
we cannot trust them if some command moved point since the
last complete redisplay. */
&& w->last_point == BUF_PT (b)
&& w->cursor.vpos >= 0
&& w->cursor.vpos < w->current_matrix->nrows
&& (row = MATRIX_ROW (w->current_matrix, w->cursor.vpos))->enabled_p)
{
struct glyph *g = row->glyphs[TEXT_AREA];
struct glyph *e = dir > 0 ? g + row->used[TEXT_AREA] : g - 1;
struct glyph *gpt = g + w->cursor.hpos;
for (g = gpt + dir; (dir > 0 ? g < e : g > e); g += dir)
{
if (BUFFERP (g->object) && g->charpos != PT)
{
SET_PT (g->charpos);
w->cursor.vpos = -1;
return make_number (PT);
}
else if (!NILP (g->object) && !EQ (g->object, gpt->object))
{
ptrdiff_t new_pos;
if (BUFFERP (gpt->object))
{
new_pos = PT;
if ((gpt->resolved_level - row->reversed_p) % 2 == 0)
new_pos += (row->reversed_p ? -dir : dir);
else
new_pos -= (row->reversed_p ? -dir : dir);
}
else if (BUFFERP (g->object))
new_pos = g->charpos;
else
break;
SET_PT (new_pos);
w->cursor.vpos = -1;
return make_number (PT);
}
else if (ROW_GLYPH_NEWLINE_P (row, g))
{
/* Glyphs inserted at the end of a non-empty line for
positioning the cursor have zero charpos, so we must
deduce the value of point by other means. */
if (g->charpos > 0)
SET_PT (g->charpos);
else if (row->ends_at_zv_p && PT != ZV)
SET_PT (ZV);
else if (PT != MATRIX_ROW_END_CHARPOS (row) - 1)
SET_PT (MATRIX_ROW_END_CHARPOS (row) - 1);
else
break;
w->cursor.vpos = -1;
return make_number (PT);
}
}
if (g == e || NILP (g->object))
{
if (row->truncated_on_left_p || row->truncated_on_right_p)
goto simulate_display;
if (!row->reversed_p)
row += dir;
else
row -= dir;
if (row < MATRIX_FIRST_TEXT_ROW (w->current_matrix)
|| row > MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w))
goto simulate_display;
if (dir > 0)
{
if (row->reversed_p && !row->continued_p)
{
SET_PT (MATRIX_ROW_END_CHARPOS (row) - 1);
w->cursor.vpos = -1;
return make_number (PT);
}
g = row->glyphs[TEXT_AREA];
e = g + row->used[TEXT_AREA];
for ( ; g < e; g++)
{
if (BUFFERP (g->object)
/* Empty lines have only one glyph, which stands
for the newline, and whose charpos is the
buffer position of the newline. */
|| ROW_GLYPH_NEWLINE_P (row, g)
/* When the buffer ends in a newline, the line at
EOB also has one glyph, but its charpos is -1. */
|| (row->ends_at_zv_p
&& !row->reversed_p
&& NILP (g->object)
&& g->type == CHAR_GLYPH
&& g->u.ch == ' '))
{
if (g->charpos > 0)
SET_PT (g->charpos);
else if (!row->reversed_p
&& row->ends_at_zv_p
&& PT != ZV)
SET_PT (ZV);
else
continue;
w->cursor.vpos = -1;
return make_number (PT);
}
}
}
else
{
if (!row->reversed_p && !row->continued_p)
{
SET_PT (MATRIX_ROW_END_CHARPOS (row) - 1);
w->cursor.vpos = -1;
return make_number (PT);
}
e = row->glyphs[TEXT_AREA];
g = e + row->used[TEXT_AREA] - 1;
for ( ; g >= e; g--)
{
if (BUFFERP (g->object)
|| (ROW_GLYPH_NEWLINE_P (row, g)
&& g->charpos > 0)
/* Empty R2L lines on GUI frames have the buffer
position of the newline stored in the stretch
glyph. */
|| g->type == STRETCH_GLYPH
|| (row->ends_at_zv_p
&& row->reversed_p
&& NILP (g->object)
&& g->type == CHAR_GLYPH
&& g->u.ch == ' '))
{
if (g->charpos > 0)
SET_PT (g->charpos);
else if (row->reversed_p
&& row->ends_at_zv_p
&& PT != ZV)
SET_PT (ZV);
else
continue;
w->cursor.vpos = -1;
return make_number (PT);
}
}
}
}
}
simulate_display:
/* If we wind up here, we failed to move by using the glyphs, so we
need to simulate display instead. */
if (b)
paragraph_dir = Fcurrent_bidi_paragraph_direction (w->contents);
else
paragraph_dir = Qleft_to_right;
if (EQ (paragraph_dir, Qright_to_left))
dir = -dir;
if (PT <= BEGV && dir < 0)
xsignal0 (Qbeginning_of_buffer);
else if (PT >= ZV && dir > 0)
xsignal0 (Qend_of_buffer);
else
{
struct text_pos pt;
struct it it;
int pt_x, target_x, pixel_width, pt_vpos;
bool at_eol_p;
bool overshoot_expected = false;
bool target_is_eol_p = false;
/* Setup the arena. */
SET_TEXT_POS (pt, PT, PT_BYTE);
start_display (&it, w, pt);
/* When lines are truncated, we could be called with point
outside of the windows edges, in which case move_it_*
functions either prematurely stop at window's edge or jump to
the next screen line, whereas we rely below on our ability to
reach point, in order to start from its X coordinate. So we
need to disregard the window's horizontal extent in that case. */
if (it.line_wrap == TRUNCATE)
it.last_visible_x = INFINITY;
if (it.cmp_it.id < 0
&& it.method == GET_FROM_STRING
&& it.area == TEXT_AREA
&& it.string_from_display_prop_p
&& (it.sp > 0 && it.stack[it.sp - 1].method == GET_FROM_BUFFER))
overshoot_expected = true;
/* Find the X coordinate of point. We start from the beginning
of this or previous line to make sure we are before point in
the logical order (since the move_it_* functions can only
move forward). */
reseat:
reseat_at_previous_visible_line_start (&it);
it.current_x = it.hpos = it.current_y = it.vpos = 0;
if (IT_CHARPOS (it) != PT)
{
move_it_to (&it, overshoot_expected ? PT - 1 : PT,
-1, -1, -1, MOVE_TO_POS);
/* If we missed point because the character there is
displayed out of a display vector that has more than one
glyph, retry expecting overshoot. */
if (it.method == GET_FROM_DISPLAY_VECTOR
&& it.current.dpvec_index > 0
&& !overshoot_expected)
{
overshoot_expected = true;
goto reseat;
}
else if (IT_CHARPOS (it) != PT && !overshoot_expected)
move_it_in_display_line (&it, PT, -1, MOVE_TO_POS);
}
pt_x = it.current_x;
pt_vpos = it.vpos;
if (dir > 0 || overshoot_expected)
{
struct glyph_row *row = it.glyph_row;
/* When point is at beginning of line, we don't have
information about the glyph there loaded into struct
it. Calling get_next_display_element fixes that. */
if (pt_x == 0)
get_next_display_element (&it);
at_eol_p = ITERATOR_AT_END_OF_LINE_P (&it);
it.glyph_row = NULL;
PRODUCE_GLYPHS (&it); /* compute it.pixel_width */
it.glyph_row = row;
/* PRODUCE_GLYPHS advances it.current_x, so we must restore
it, lest it will become out of sync with it's buffer
position. */
it.current_x = pt_x;
}
else
at_eol_p = ITERATOR_AT_END_OF_LINE_P (&it);
pixel_width = it.pixel_width;
if (overshoot_expected && at_eol_p)
pixel_width = 0;
else if (pixel_width <= 0)
pixel_width = 1;
/* If there's a display string (or something similar) at point,
we are actually at the glyph to the left of point, so we need
to correct the X coordinate. */
if (overshoot_expected)
{
if (it.bidi_p)
pt_x += pixel_width * it.bidi_it.scan_dir;
else
pt_x += pixel_width;
}
/* Compute target X coordinate, either to the left or to the
right of point. On TTY frames, all characters have the same
pixel width of 1, so we can use that. On GUI frames we don't
have an easy way of getting at the pixel width of the
character to the left of point, so we use a different method
of getting to that place. */
if (dir > 0)
target_x = pt_x + pixel_width;
else
target_x = pt_x - (!FRAME_WINDOW_P (it.f)) * pixel_width;
/* Target X coordinate could be one line above or below the line
of point, in which case we need to adjust the target X
coordinate. Also, if moving to the left, we need to begin at
the left edge of the point's screen line. */
if (dir < 0)
{
if (pt_x > 0)
{
start_display (&it, w, pt);
if (it.line_wrap == TRUNCATE)
it.last_visible_x = INFINITY;
reseat_at_previous_visible_line_start (&it);
it.current_x = it.current_y = it.hpos = 0;
if (pt_vpos != 0)
move_it_by_lines (&it, pt_vpos);
}
else
{
move_it_by_lines (&it, -1);
target_x = it.last_visible_x - !FRAME_WINDOW_P (it.f);
target_is_eol_p = true;
/* Under word-wrap, we don't know the x coordinate of
the last character displayed on the previous line,
which immediately precedes the wrap point. To find
out its x coordinate, we try moving to the right
margin of the window, which will stop at the wrap
point, and then reset target_x to point at the
character that precedes the wrap point. This is not
needed on GUI frames, because (see below) there we
move from the left margin one grapheme cluster at a
time, and stop when we hit the wrap point. */
if (!FRAME_WINDOW_P (it.f) && it.line_wrap == WORD_WRAP)
{
void *it_data = NULL;
struct it it2;
SAVE_IT (it2, it, it_data);
move_it_in_display_line_to (&it, ZV, target_x,
MOVE_TO_POS | MOVE_TO_X);
/* If we arrived at target_x, that _is_ the last
character on the previous line. */
if (it.current_x != target_x)
target_x = it.current_x - 1;
RESTORE_IT (&it, &it2, it_data);
}
}
}
else
{
if (at_eol_p
|| (target_x >= it.last_visible_x
&& it.line_wrap != TRUNCATE))
{
if (pt_x > 0)
move_it_by_lines (&it, 0);
move_it_by_lines (&it, 1);
target_x = 0;
}
}
/* Move to the target X coordinate. */
/* On GUI frames, as we don't know the X coordinate of the
character to the left of point, moving point to the left
requires walking, one grapheme cluster at a time, until we
find ourself at a place immediately to the left of the
character at point. */
if (FRAME_WINDOW_P (it.f) && dir < 0)
{
struct text_pos new_pos;
enum move_it_result rc = MOVE_X_REACHED;
if (it.current_x == 0)
get_next_display_element (&it);
if (it.what == IT_COMPOSITION)
{
new_pos.charpos = it.cmp_it.charpos;
new_pos.bytepos = -1;
}
else
new_pos = it.current.pos;
while (it.current_x + it.pixel_width <= target_x
&& (rc == MOVE_X_REACHED
/* Under word-wrap, move_it_in_display_line_to
stops at correct coordinates, but sometimes
returns MOVE_POS_MATCH_OR_ZV. */
|| (it.line_wrap == WORD_WRAP
&& rc == MOVE_POS_MATCH_OR_ZV)))
{
int new_x = it.current_x + it.pixel_width;
/* For composed characters, we want the position of the
first character in the grapheme cluster (usually, the
composition's base character), whereas it.current
might give us the position of the _last_ one, e.g. if
the composition is rendered in reverse due to bidi
reordering. */
if (it.what == IT_COMPOSITION)
{
new_pos.charpos = it.cmp_it.charpos;
new_pos.bytepos = -1;
}
else
new_pos = it.current.pos;
if (new_x == it.current_x)
new_x++;
rc = move_it_in_display_line_to (&it, ZV, new_x,
MOVE_TO_POS | MOVE_TO_X);
if (ITERATOR_AT_END_OF_LINE_P (&it) && !target_is_eol_p)
break;
}
/* The previous position we saw in the loop is the one we
want. */
if (new_pos.bytepos == -1)
new_pos.bytepos = CHAR_TO_BYTE (new_pos.charpos);
it.current.pos = new_pos;
}
else if (it.current_x != target_x)
move_it_in_display_line_to (&it, ZV, target_x, MOVE_TO_POS | MOVE_TO_X);
/* If we ended up in a display string that covers point, move to
buffer position to the right in the visual order. */
if (dir > 0)
{
while (IT_CHARPOS (it) == PT)
{
set_iterator_to_next (&it, false);
if (!get_next_display_element (&it))
break;
}
}
/* Move point to that position. */
SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
}
return make_number (PT);
#undef ROW_GLYPH_NEWLINE_P
}
DEFUN ("bidi-resolved-levels", Fbidi_resolved_levels,
Sbidi_resolved_levels, 0, 1, 0,
doc: /* Return the resolved bidirectional levels of characters at VPOS.
The resolved levels are produced by the Emacs bidi reordering engine
that implements the UBA, the Unicode Bidirectional Algorithm. Please
read the Unicode Standard Annex 9 (UAX#9) for background information
about these levels.
VPOS is the zero-based number of the current window's screen line
for which to produce the resolved levels. If VPOS is nil or omitted,
it defaults to the screen line of point. If the window displays a
header line, VPOS of zero will report on the header line, and first
line of text in the window will have VPOS of 1.
Value is an array of resolved levels, indexed by glyph number.
Glyphs are numbered from zero starting from the beginning of the
screen line, i.e. the left edge of the window for left-to-right lines
and from the right edge for right-to-left lines. The resolved levels
are produced only for the window's text area; text in display margins
is not included.
If the selected window's display is not up-to-date, or if the specified
screen line does not display text, this function returns nil. It is
highly recommended to bind this function to some simple key, like F8,
in order to avoid these problems.
This function exists mainly for testing the correctness of the
Emacs UBA implementation, in particular with the test suite. */)
(Lisp_Object vpos)
{
struct window *w = XWINDOW (selected_window);
struct buffer *b = XBUFFER (w->contents);
int nrow;
struct glyph_row *row;
if (NILP (vpos))
{
int d1, d2, d3, d4, d5;
pos_visible_p (w, PT, &d1, &d2, &d3, &d4, &d5, &nrow);
}
else
{
CHECK_NUMBER_COERCE_MARKER (vpos);
nrow = XINT (vpos);
}
/* We require up-to-date glyph matrix for this window. */
if (w->window_end_valid
&& !windows_or_buffers_changed
&& b
&& !b->clip_changed
&& !b->prevent_redisplay_optimizations_p
&& !window_outdated (w)
&& nrow >= 0
&& nrow < w->current_matrix->nrows
&& (row = MATRIX_ROW (w->current_matrix, nrow))->enabled_p
&& MATRIX_ROW_DISPLAYS_TEXT_P (row))
{
struct glyph *g, *e, *g1;
int nglyphs, i;
Lisp_Object levels;
if (!row->reversed_p) /* Left-to-right glyph row. */
{
g = g1 = row->glyphs[TEXT_AREA];
e = g + row->used[TEXT_AREA];
/* Skip over glyphs at the start of the row that was
generated by redisplay for its own needs. */
while (g < e
&& NILP (g->object)
&& g->charpos < 0)
g++;
g1 = g;
/* Count the "interesting" glyphs in this row. */
for (nglyphs = 0; g < e && !NILP (g->object); g++)
nglyphs++;
/* Create and fill the array. */
levels = make_uninit_vector (nglyphs);
for (i = 0; g1 < g; i++, g1++)
ASET (levels, i, make_number (g1->resolved_level));
}
else /* Right-to-left glyph row. */
{
g = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1;
e = row->glyphs[TEXT_AREA] - 1;
while (g > e
&& NILP (g->object)
&& g->charpos < 0)
g--;
g1 = g;
for (nglyphs = 0; g > e && !NILP (g->object); g--)
nglyphs++;
levels = make_uninit_vector (nglyphs);
for (i = 0; g1 > g; i++, g1--)
ASET (levels, i, make_number (g1->resolved_level));
}
return levels;
}
else
return Qnil;
}
\f
/***********************************************************************
Menu Bar
***********************************************************************/
/* Redisplay the menu bar in the frame for window W.
The menu bar of X frames that don't have X toolkit support is
displayed in a special window W->frame->menu_bar_window.
The menu bar of terminal frames is treated specially as far as
glyph matrices are concerned. Menu bar lines are not part of
windows, so the update is done directly on the frame matrix rows
for the menu bar. */
static void
display_menu_bar (struct window *w)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
struct it it;
Lisp_Object items;
int i;
/* Don't do all this for graphical frames. */
#ifdef HAVE_NTGUI
if (FRAME_W32_P (f))
return;
#endif
#if defined (USE_X_TOOLKIT) || defined (USE_GTK)
if (FRAME_X_P (f))
return;
#endif
#ifdef HAVE_NS
if (FRAME_NS_P (f))
return;
#endif /* HAVE_NS */
#if defined (USE_X_TOOLKIT) || defined (USE_GTK)
eassert (!FRAME_WINDOW_P (f));
init_iterator (&it, w, -1, -1, f->desired_matrix->rows, MENU_FACE_ID);
it.first_visible_x = 0;
it.last_visible_x = FRAME_PIXEL_WIDTH (f);
#elif defined (HAVE_X_WINDOWS) /* X without toolkit. */
if (FRAME_WINDOW_P (f))
{
/* Menu bar lines are displayed in the desired matrix of the
dummy window menu_bar_window. */
struct window *menu_w;
menu_w = XWINDOW (f->menu_bar_window);
init_iterator (&it, menu_w, -1, -1, menu_w->desired_matrix->rows,
MENU_FACE_ID);
it.first_visible_x = 0;
it.last_visible_x = FRAME_PIXEL_WIDTH (f);
}
else
#endif /* not USE_X_TOOLKIT and not USE_GTK */
{
/* This is a TTY frame, i.e. character hpos/vpos are used as
pixel x/y. */
init_iterator (&it, w, -1, -1, f->desired_matrix->rows,
MENU_FACE_ID);
it.first_visible_x = 0;
it.last_visible_x = FRAME_COLS (f);
}
/* FIXME: This should be controlled by a user option. See the
comments in redisplay_tool_bar and display_mode_line about
this. */
it.paragraph_embedding = L2R;
/* Clear all rows of the menu bar. */
for (i = 0; i < FRAME_MENU_BAR_LINES (f); ++i)
{
struct glyph_row *row = it.glyph_row + i;
clear_glyph_row (row);
row->enabled_p = true;
row->full_width_p = true;
row->reversed_p = false;
}
/* Display all items of the menu bar. */
items = FRAME_MENU_BAR_ITEMS (it.f);
for (i = 0; i < ASIZE (items); i += 4)
{
Lisp_Object string;
/* Stop at nil string. */
string = AREF (items, i + 1);
if (NILP (string))
break;
/* Remember where item was displayed. */
ASET (items, i + 3, make_number (it.hpos));
/* Display the item, pad with one space. */
if (it.current_x < it.last_visible_x)
display_string (NULL, string, Qnil, 0, 0, &it,
SCHARS (string) + 1, 0, 0, -1);
}
/* Fill out the line with spaces. */
if (it.current_x < it.last_visible_x)
display_string ("", Qnil, Qnil, 0, 0, &it, -1, 0, 0, -1);
/* Compute the total height of the lines. */
compute_line_metrics (&it);
}
/* Deep copy of a glyph row, including the glyphs. */
static void
deep_copy_glyph_row (struct glyph_row *to, struct glyph_row *from)
{
struct glyph *pointers[1 + LAST_AREA];
int to_used = to->used[TEXT_AREA];
/* Save glyph pointers of TO. */
memcpy (pointers, to->glyphs, sizeof to->glyphs);
/* Do a structure assignment. */
*to = *from;
/* Restore original glyph pointers of TO. */
memcpy (to->glyphs, pointers, sizeof to->glyphs);
/* Copy the glyphs. */
memcpy (to->glyphs[TEXT_AREA], from->glyphs[TEXT_AREA],
min (from->used[TEXT_AREA], to_used) * sizeof (struct glyph));
/* If we filled only part of the TO row, fill the rest with
space_glyph (which will display as empty space). */
if (to_used > from->used[TEXT_AREA])
fill_up_frame_row_with_spaces (to, to_used);
}
/* Display one menu item on a TTY, by overwriting the glyphs in the
frame F's desired glyph matrix with glyphs produced from the menu
item text. Called from term.c to display TTY drop-down menus one
item at a time.
ITEM_TEXT is the menu item text as a C string.
FACE_ID is the face ID to be used for this menu item. FACE_ID
could specify one of 3 faces: a face for an enabled item, a face
for a disabled item, or a face for a selected item.
X and Y are coordinates of the first glyph in the frame's desired
matrix to be overwritten by the menu item. Since this is a TTY, Y
is the zero-based number of the glyph row and X is the zero-based
glyph number in the row, starting from left, where to start
displaying the item.
SUBMENU means this menu item drops down a submenu, which
should be indicated by displaying a proper visual cue after the
item text. */
void
display_tty_menu_item (const char *item_text, int width, int face_id,
int x, int y, bool submenu)
{
struct it it;
struct frame *f = SELECTED_FRAME ();
struct window *w = XWINDOW (f->selected_window);
struct glyph_row *row;
size_t item_len = strlen (item_text);
eassert (FRAME_TERMCAP_P (f));
/* Don't write beyond the matrix's last row. This can happen for
TTY screens that are not high enough to show the entire menu.
(This is actually a bit of defensive programming, as
tty_menu_display already limits the number of menu items to one
less than the number of screen lines.) */
if (y >= f->desired_matrix->nrows)
return;
init_iterator (&it, w, -1, -1, f->desired_matrix->rows + y, MENU_FACE_ID);
it.first_visible_x = 0;
it.last_visible_x = FRAME_COLS (f) - 1;
row = it.glyph_row;
/* Start with the row contents from the current matrix. */
deep_copy_glyph_row (row, f->current_matrix->rows + y);
bool saved_width = row->full_width_p;
row->full_width_p = true;
bool saved_reversed = row->reversed_p;
row->reversed_p = false;
row->enabled_p = true;
/* Arrange for the menu item glyphs to start at (X,Y) and have the
desired face. */
eassert (x < f->desired_matrix->matrix_w);
it.current_x = it.hpos = x;
it.current_y = it.vpos = y;
int saved_used = row->used[TEXT_AREA];
bool saved_truncated = row->truncated_on_right_p;
row->used[TEXT_AREA] = x;
it.face_id = face_id;
it.line_wrap = TRUNCATE;
/* FIXME: This should be controlled by a user option. See the
comments in redisplay_tool_bar and display_mode_line about this.
Also, if paragraph_embedding could ever be R2L, changes will be
needed to avoid shifting to the right the row characters in
term.c:append_glyph. */
it.paragraph_embedding = L2R;
/* Pad with a space on the left. */
display_string (" ", Qnil, Qnil, 0, 0, &it, 1, 0, FRAME_COLS (f) - 1, -1);
width--;
/* Display the menu item, pad with spaces to WIDTH. */
if (submenu)
{
display_string (item_text, Qnil, Qnil, 0, 0, &it,
item_len, 0, FRAME_COLS (f) - 1, -1);
width -= item_len;
/* Indicate with " >" that there's a submenu. */
display_string (" >", Qnil, Qnil, 0, 0, &it, width, 0,
FRAME_COLS (f) - 1, -1);
}
else
display_string (item_text, Qnil, Qnil, 0, 0, &it,
width, 0, FRAME_COLS (f) - 1, -1);
row->used[TEXT_AREA] = max (saved_used, row->used[TEXT_AREA]);
row->truncated_on_right_p = saved_truncated;
row->hash = row_hash (row);
row->full_width_p = saved_width;
row->reversed_p = saved_reversed;
}
\f
/***********************************************************************
Mode Line
***********************************************************************/
/* Redisplay mode lines in the window tree whose root is WINDOW.
If FORCE, redisplay mode lines unconditionally.
Otherwise, redisplay only mode lines that are garbaged. Value is
the number of windows whose mode lines were redisplayed. */
static int
redisplay_mode_lines (Lisp_Object window, bool force)
{
int nwindows = 0;
while (!NILP (window))
{
struct window *w = XWINDOW (window);
if (WINDOWP (w->contents))
nwindows += redisplay_mode_lines (w->contents, force);
else if (force
|| FRAME_GARBAGED_P (XFRAME (w->frame))
|| !MATRIX_MODE_LINE_ROW (w->current_matrix)->enabled_p)
{
struct text_pos lpoint;
struct buffer *old = current_buffer;
/* Set the window's buffer for the mode line display. */
SET_TEXT_POS (lpoint, PT, PT_BYTE);
set_buffer_internal_1 (XBUFFER (w->contents));
/* Point refers normally to the selected window. For any
other window, set up appropriate value. */
if (!EQ (window, selected_window))
{
struct text_pos pt;
CLIP_TEXT_POS_FROM_MARKER (pt, w->pointm);
TEMP_SET_PT_BOTH (CHARPOS (pt), BYTEPOS (pt));
}
/* Display mode lines. */
clear_glyph_matrix (w->desired_matrix);
if (display_mode_lines (w))
++nwindows;
/* Restore old settings. */
set_buffer_internal_1 (old);
TEMP_SET_PT_BOTH (CHARPOS (lpoint), BYTEPOS (lpoint));
}
window = w->next;
}
return nwindows;
}
/* Display the mode and/or header line of window W. Value is the
sum number of mode lines and header lines displayed. */
static int
display_mode_lines (struct window *w)
{
Lisp_Object old_selected_window = selected_window;
Lisp_Object old_selected_frame = selected_frame;
Lisp_Object new_frame = w->frame;
Lisp_Object old_frame_selected_window = XFRAME (new_frame)->selected_window;
int n = 0;
selected_frame = new_frame;
/* FIXME: If we were to allow the mode-line's computation changing the buffer
or window's point, then we'd need select_window_1 here as well. */
XSETWINDOW (selected_window, w);
XFRAME (new_frame)->selected_window = selected_window;
/* These will be set while the mode line specs are processed. */
line_number_displayed = false;
w->column_number_displayed = -1;
if (WINDOW_WANTS_MODELINE_P (w))
{
struct window *sel_w = XWINDOW (old_selected_window);
/* Select mode line face based on the real selected window. */
display_mode_line (w, CURRENT_MODE_LINE_FACE_ID_3 (sel_w, sel_w, w),
BVAR (current_buffer, mode_line_format));
++n;
}
if (WINDOW_WANTS_HEADER_LINE_P (w))
{
display_mode_line (w, HEADER_LINE_FACE_ID,
BVAR (current_buffer, header_line_format));
++n;
}
XFRAME (new_frame)->selected_window = old_frame_selected_window;
selected_frame = old_selected_frame;
selected_window = old_selected_window;
if (n > 0)
w->must_be_updated_p = true;
return n;
}
/* Display mode or header line of window W. FACE_ID specifies which
line to display; it is either MODE_LINE_FACE_ID or
HEADER_LINE_FACE_ID. FORMAT is the mode/header line format to
display. Value is the pixel height of the mode/header line
displayed. */
static int
display_mode_line (struct window *w, enum face_id face_id, Lisp_Object format)
{
struct it it;
struct face *face;
ptrdiff_t count = SPECPDL_INDEX ();
init_iterator (&it, w, -1, -1, NULL, face_id);
/* Don't extend on a previously drawn mode-line.
This may happen if called from pos_visible_p. */
it.glyph_row->enabled_p = false;
prepare_desired_row (w, it.glyph_row, true);
it.glyph_row->mode_line_p = true;
/* FIXME: This should be controlled by a user option. But
supporting such an option is not trivial, since the mode line is
made up of many separate strings. */
it.paragraph_embedding = L2R;
record_unwind_protect (unwind_format_mode_line,
format_mode_line_unwind_data (NULL, NULL,
Qnil, false));
mode_line_target = MODE_LINE_DISPLAY;
/* Temporarily make frame's keyboard the current kboard so that
kboard-local variables in the mode_line_format will get the right
values. */
push_kboard (FRAME_KBOARD (it.f));
record_unwind_save_match_data ();
display_mode_element (&it, 0, 0, 0, format, Qnil, false);
pop_kboard ();
unbind_to (count, Qnil);
/* Fill up with spaces. */
display_string (" ", Qnil, Qnil, 0, 0, &it, 10000, -1, -1, 0);
compute_line_metrics (&it);
it.glyph_row->full_width_p = true;
it.glyph_row->continued_p = false;
it.glyph_row->truncated_on_left_p = false;
it.glyph_row->truncated_on_right_p = false;
/* Make a 3D mode-line have a shadow at its right end. */
face = FACE_FROM_ID (it.f, face_id);
extend_face_to_end_of_line (&it);
if (face->box != FACE_NO_BOX)
{
struct glyph *last = (it.glyph_row->glyphs[TEXT_AREA]
+ it.glyph_row->used[TEXT_AREA] - 1);
last->right_box_line_p = true;
}
return it.glyph_row->height;
}
/* Move element ELT in LIST to the front of LIST.
Return the updated list. */
static Lisp_Object
move_elt_to_front (Lisp_Object elt, Lisp_Object list)
{
register Lisp_Object tail, prev;
register Lisp_Object tem;
tail = list;
prev = Qnil;
while (CONSP (tail))
{
tem = XCAR (tail);
if (EQ (elt, tem))
{
/* Splice out the link TAIL. */
if (NILP (prev))
list = XCDR (tail);
else
Fsetcdr (prev, XCDR (tail));
/* Now make it the first. */
Fsetcdr (tail, list);
return tail;
}
else
prev = tail;
tail = XCDR (tail);
QUIT;
}
/* Not found--return unchanged LIST. */
return list;
}
/* Contribute ELT to the mode line for window IT->w. How it
translates into text depends on its data type.
IT describes the display environment in which we display, as usual.
DEPTH is the depth in recursion. It is used to prevent
infinite recursion here.
FIELD_WIDTH is the number of characters the display of ELT should
occupy in the mode line, and PRECISION is the maximum number of
characters to display from ELT's representation. See
display_string for details.
Returns the hpos of the end of the text generated by ELT.
PROPS is a property list to add to any string we encounter.
If RISKY, remove (disregard) any properties in any string
we encounter, and ignore :eval and :propertize.
The global variable `mode_line_target' determines whether the
output is passed to `store_mode_line_noprop',
`store_mode_line_string', or `display_string'. */
static int
display_mode_element (struct it *it, int depth, int field_width, int precision,
Lisp_Object elt, Lisp_Object props, bool risky)
{
int n = 0, field, prec;
bool literal = false;
tail_recurse:
if (depth > 100)
elt = build_string ("*too-deep*");
depth++;
switch (XTYPE (elt))
{
case Lisp_String:
{
/* A string: output it and check for %-constructs within it. */
unsigned char c;
ptrdiff_t offset = 0;
if (SCHARS (elt) > 0
&& (!NILP (props) || risky))
{
Lisp_Object oprops, aelt;
oprops = Ftext_properties_at (make_number (0), elt);
/* If the starting string's properties are not what
we want, translate the string. Also, if the string
is risky, do that anyway. */
if (NILP (Fequal (props, oprops)) || risky)
{
/* If the starting string has properties,
merge the specified ones onto the existing ones. */
if (! NILP (oprops) && !risky)
{
Lisp_Object tem;
oprops = Fcopy_sequence (oprops);
tem = props;
while (CONSP (tem))
{
oprops = Fplist_put (oprops, XCAR (tem),
XCAR (XCDR (tem)));
tem = XCDR (XCDR (tem));
}
props = oprops;
}
aelt = Fassoc (elt, mode_line_proptrans_alist);
if (! NILP (aelt) && !NILP (Fequal (props, XCDR (aelt))))
{
/* AELT is what we want. Move it to the front
without consing. */
elt = XCAR (aelt);
mode_line_proptrans_alist
= move_elt_to_front (aelt, mode_line_proptrans_alist);
}
else
{
Lisp_Object tem;
/* If AELT has the wrong props, it is useless.
so get rid of it. */
if (! NILP (aelt))
mode_line_proptrans_alist
= Fdelq (aelt, mode_line_proptrans_alist);
elt = Fcopy_sequence (elt);
Fset_text_properties (make_number (0), Flength (elt),
props, elt);
/* Add this item to mode_line_proptrans_alist. */
mode_line_proptrans_alist
= Fcons (Fcons (elt, props),
mode_line_proptrans_alist);
/* Truncate mode_line_proptrans_alist
to at most 50 elements. */
tem = Fnthcdr (make_number (50),
mode_line_proptrans_alist);
if (! NILP (tem))
XSETCDR (tem, Qnil);
}
}
}
offset = 0;
if (literal)
{
prec = precision - n;
switch (mode_line_target)
{
case MODE_LINE_NOPROP:
case MODE_LINE_TITLE:
n += store_mode_line_noprop (SSDATA (elt), -1, prec);
break;
case MODE_LINE_STRING:
n += store_mode_line_string (NULL, elt, true, 0, prec, Qnil);
break;
case MODE_LINE_DISPLAY:
n += display_string (NULL, elt, Qnil, 0, 0, it,
0, prec, 0, STRING_MULTIBYTE (elt));
break;
}
break;
}
/* Handle the non-literal case. */
while ((precision <= 0 || n < precision)
&& SREF (elt, offset) != 0
&& (mode_line_target != MODE_LINE_DISPLAY
|| it->current_x < it->last_visible_x))
{
ptrdiff_t last_offset = offset;
/* Advance to end of string or next format specifier. */
while ((c = SREF (elt, offset++)) != '\0' && c != '%')
;
if (offset - 1 != last_offset)
{
ptrdiff_t nchars, nbytes;
/* Output to end of string or up to '%'. Field width
is length of string. Don't output more than
PRECISION allows us. */
offset--;
prec = c_string_width (SDATA (elt) + last_offset,
offset - last_offset, precision - n,
&nchars, &nbytes);
switch (mode_line_target)
{
case MODE_LINE_NOPROP:
case MODE_LINE_TITLE:
n += store_mode_line_noprop (SSDATA (elt) + last_offset, 0, prec);
break;
case MODE_LINE_STRING:
{
ptrdiff_t bytepos = last_offset;
ptrdiff_t charpos = string_byte_to_char (elt, bytepos);
ptrdiff_t endpos = (precision <= 0
? string_byte_to_char (elt, offset)
: charpos + nchars);
Lisp_Object mode_string
= Fsubstring (elt, make_number (charpos),
make_number (endpos));
n += store_mode_line_string (NULL, mode_string, false,
0, 0, Qnil);
}
break;
case MODE_LINE_DISPLAY:
{
ptrdiff_t bytepos = last_offset;
ptrdiff_t charpos = string_byte_to_char (elt, bytepos);
if (precision <= 0)
nchars = string_byte_to_char (elt, offset) - charpos;
n += display_string (NULL, elt, Qnil, 0, charpos,
it, 0, nchars, 0,
STRING_MULTIBYTE (elt));
}
break;
}
}
else /* c == '%' */
{
ptrdiff_t percent_position = offset;
/* Get the specified minimum width. Zero means
don't pad. */
field = 0;
while ((c = SREF (elt, offset++)) >= '0' && c <= '9')
field = field * 10 + c - '0';
/* Don't pad beyond the total padding allowed. */
if (field_width - n > 0 && field > field_width - n)
field = field_width - n;
/* Note that either PRECISION <= 0 or N < PRECISION. */
prec = precision - n;
if (c == 'M')
n += display_mode_element (it, depth, field, prec,
Vglobal_mode_string, props,
risky);
else if (c != 0)
{
bool multibyte;
ptrdiff_t bytepos, charpos;
const char *spec;
Lisp_Object string;
bytepos = percent_position;
charpos = (STRING_MULTIBYTE (elt)
? string_byte_to_char (elt, bytepos)
: bytepos);
spec = decode_mode_spec (it->w, c, field, &string);
multibyte = STRINGP (string) && STRING_MULTIBYTE (string);
switch (mode_line_target)
{
case MODE_LINE_NOPROP:
case MODE_LINE_TITLE:
n += store_mode_line_noprop (spec, field, prec);
break;
case MODE_LINE_STRING:
{
Lisp_Object tem = build_string (spec);
props = Ftext_properties_at (make_number (charpos), elt);
/* Should only keep face property in props */
n += store_mode_line_string (NULL, tem, false,
field, prec, props);
}
break;
case MODE_LINE_DISPLAY:
{
int nglyphs_before, nwritten;
nglyphs_before = it->glyph_row->used[TEXT_AREA];
nwritten = display_string (spec, string, elt,
charpos, 0, it,
field, prec, 0,
multibyte);
/* Assign to the glyphs written above the
string where the `%x' came from, position
of the `%'. */
if (nwritten > 0)
{
struct glyph *glyph
= (it->glyph_row->glyphs[TEXT_AREA]
+ nglyphs_before);
int i;
for (i = 0; i < nwritten; ++i)
{
glyph[i].object = elt;
glyph[i].charpos = charpos;
}
n += nwritten;
}
}
break;
}
}
else /* c == 0 */
break;
}
}
}
break;
case Lisp_Symbol:
/* A symbol: process the value of the symbol recursively
as if it appeared here directly. Avoid error if symbol void.
Special case: if value of symbol is a string, output the string
literally. */
{
register Lisp_Object tem;
/* If the variable is not marked as risky to set
then its contents are risky to use. */
if (NILP (Fget (elt, Qrisky_local_variable)))
risky = true;
tem = Fboundp (elt);
if (!NILP (tem))
{
tem = Fsymbol_value (elt);
/* If value is a string, output that string literally:
don't check for % within it. */
if (STRINGP (tem))
literal = true;
if (!EQ (tem, elt))
{
/* Give up right away for nil or t. */
elt = tem;
goto tail_recurse;
}
}
}
break;
case Lisp_Cons:
{
register Lisp_Object car, tem;
/* A cons cell: five distinct cases.
If first element is :eval or :propertize, do something special.
If first element is a string or a cons, process all the elements
and effectively concatenate them.
If first element is a negative number, truncate displaying cdr to
at most that many characters. If positive, pad (with spaces)
to at least that many characters.
If first element is a symbol, process the cadr or caddr recursively
according to whether the symbol's value is non-nil or nil. */
car = XCAR (elt);
if (EQ (car, QCeval))
{
/* An element of the form (:eval FORM) means evaluate FORM
and use the result as mode line elements. */
if (risky)
break;
if (CONSP (XCDR (elt)))
{
Lisp_Object spec;
spec = safe__eval (true, XCAR (XCDR (elt)));
n += display_mode_element (it, depth, field_width - n,
precision - n, spec, props,
risky);
}
}
else if (EQ (car, QCpropertize))
{
/* An element of the form (:propertize ELT PROPS...)
means display ELT but applying properties PROPS. */
if (risky)
break;
if (CONSP (XCDR (elt)))
n += display_mode_element (it, depth, field_width - n,
precision - n, XCAR (XCDR (elt)),
XCDR (XCDR (elt)), risky);
}
else if (SYMBOLP (car))
{
tem = Fboundp (car);
elt = XCDR (elt);
if (!CONSP (elt))
goto invalid;
/* elt is now the cdr, and we know it is a cons cell.
Use its car if CAR has a non-nil value. */
if (!NILP (tem))
{
tem = Fsymbol_value (car);
if (!NILP (tem))
{
elt = XCAR (elt);
goto tail_recurse;
}
}
/* Symbol's value is nil (or symbol is unbound)
Get the cddr of the original list
and if possible find the caddr and use that. */
elt = XCDR (elt);
if (NILP (elt))
break;
else if (!CONSP (elt))
goto invalid;
elt = XCAR (elt);
goto tail_recurse;
}
else if (INTEGERP (car))
{
register int lim = XINT (car);
elt = XCDR (elt);
if (lim < 0)
{
/* Negative int means reduce maximum width. */
if (precision <= 0)
precision = -lim;
else
precision = min (precision, -lim);
}
else if (lim > 0)
{
/* Padding specified. Don't let it be more than
current maximum. */
if (precision > 0)
lim = min (precision, lim);
/* If that's more padding than already wanted, queue it.
But don't reduce padding already specified even if
that is beyond the current truncation point. */
field_width = max (lim, field_width);
}
goto tail_recurse;
}
else if (STRINGP (car) || CONSP (car))
{
Lisp_Object halftail = elt;
int len = 0;
while (CONSP (elt)
&& (precision <= 0 || n < precision))
{
n += display_mode_element (it, depth,
/* Do padding only after the last
element in the list. */
(! CONSP (XCDR (elt))
? field_width - n
: 0),
precision - n, XCAR (elt),
props, risky);
elt = XCDR (elt);
len++;
if ((len & 1) == 0)
halftail = XCDR (halftail);
/* Check for cycle. */
if (EQ (halftail, elt))
break;
}
}
}
break;
default:
invalid:
elt = build_string ("*invalid*");
goto tail_recurse;
}
/* Pad to FIELD_WIDTH. */
if (field_width > 0 && n < field_width)
{
switch (mode_line_target)
{
case MODE_LINE_NOPROP:
case MODE_LINE_TITLE:
n += store_mode_line_noprop ("", field_width - n, 0);
break;
case MODE_LINE_STRING:
n += store_mode_line_string ("", Qnil, false, field_width - n, 0,
Qnil);
break;
case MODE_LINE_DISPLAY:
n += display_string ("", Qnil, Qnil, 0, 0, it, field_width - n,
0, 0, 0);
break;
}
}
return n;
}
/* Store a mode-line string element in mode_line_string_list.
If STRING is non-null, display that C string. Otherwise, the Lisp
string LISP_STRING is displayed.
FIELD_WIDTH is the minimum number of output glyphs to produce.
If STRING has fewer characters than FIELD_WIDTH, pad to the right
with spaces. FIELD_WIDTH <= 0 means don't pad.
PRECISION is the maximum number of characters to output from
STRING. PRECISION <= 0 means don't truncate the string.
If COPY_STRING, make a copy of LISP_STRING before adding
properties to the string.
PROPS are the properties to add to the string.
The mode_line_string_face face property is always added to the string.
*/
static int
store_mode_line_string (const char *string, Lisp_Object lisp_string,
bool copy_string,
int field_width, int precision, Lisp_Object props)
{
ptrdiff_t len;
int n = 0;
if (string != NULL)
{
len = strlen (string);
if (precision > 0 && len > precision)
len = precision;
lisp_string = make_string (string, len);
if (NILP (props))
props = mode_line_string_face_prop;
else if (!NILP (mode_line_string_face))
{
Lisp_Object face = Fplist_get (props, Qface);
props = Fcopy_sequence (props);
if (NILP (face))
face = mode_line_string_face;
else
face = list2 (face, mode_line_string_face);
props = Fplist_put (props, Qface, face);
}
Fadd_text_properties (make_number (0), make_number (len),
props, lisp_string);
}
else
{
len = XFASTINT (Flength (lisp_string));
if (precision > 0 && len > precision)
{
len = precision;
lisp_string = Fsubstring (lisp_string, make_number (0), make_number (len));
precision = -1;
}
if (!NILP (mode_line_string_face))
{
Lisp_Object face;
if (NILP (props))
props = Ftext_properties_at (make_number (0), lisp_string);
face = Fplist_get (props, Qface);
if (NILP (face))
face = mode_line_string_face;
else
face = list2 (face, mode_line_string_face);
props = list2 (Qface, face);
if (copy_string)
lisp_string = Fcopy_sequence (lisp_string);
}
if (!NILP (props))
Fadd_text_properties (make_number (0), make_number (len),
props, lisp_string);
}
if (len > 0)
{
mode_line_string_list = Fcons (lisp_string, mode_line_string_list);
n += len;
}
if (field_width > len)
{
field_width -= len;
lisp_string = Fmake_string (make_number (field_width), make_number (' '));
if (!NILP (props))
Fadd_text_properties (make_number (0), make_number (field_width),
props, lisp_string);
mode_line_string_list = Fcons (lisp_string, mode_line_string_list);
n += field_width;
}
return n;
}
DEFUN ("format-mode-line", Fformat_mode_line, Sformat_mode_line,
1, 4, 0,
doc: /* Format a string out of a mode line format specification.
First arg FORMAT specifies the mode line format (see `mode-line-format'
for details) to use.
By default, the format is evaluated for the currently selected window.
Optional second arg FACE specifies the face property to put on all
characters for which no face is specified. The value nil means the
default face. The value t means whatever face the window's mode line
currently uses (either `mode-line' or `mode-line-inactive',
depending on whether the window is the selected window or not).
An integer value means the value string has no text
properties.
Optional third and fourth args WINDOW and BUFFER specify the window
and buffer to use as the context for the formatting (defaults
are the selected window and the WINDOW's buffer). */)
(Lisp_Object format, Lisp_Object face,
Lisp_Object window, Lisp_Object buffer)
{
struct it it;
int len;
struct window *w;
struct buffer *old_buffer = NULL;
int face_id;
bool no_props = INTEGERP (face);
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object str;
int string_start = 0;
w = decode_any_window (window);
XSETWINDOW (window, w);
if (NILP (buffer))
buffer = w->contents;
CHECK_BUFFER (buffer);
/* Make formatting the modeline a non-op when noninteractive, otherwise
there will be problems later caused by a partially initialized frame. */
if (NILP (format) || noninteractive)
return empty_unibyte_string;
if (no_props)
face = Qnil;
face_id = (NILP (face) || EQ (face, Qdefault)) ? DEFAULT_FACE_ID
: EQ (face, Qt) ? (EQ (window, selected_window)
? MODE_LINE_FACE_ID : MODE_LINE_INACTIVE_FACE_ID)
: EQ (face, Qmode_line) ? MODE_LINE_FACE_ID
: EQ (face, Qmode_line_inactive) ? MODE_LINE_INACTIVE_FACE_ID
: EQ (face, Qheader_line) ? HEADER_LINE_FACE_ID
: EQ (face, Qtool_bar) ? TOOL_BAR_FACE_ID
: DEFAULT_FACE_ID;
old_buffer = current_buffer;
/* Save things including mode_line_proptrans_alist,
and set that to nil so that we don't alter the outer value. */
record_unwind_protect (unwind_format_mode_line,
format_mode_line_unwind_data
(XFRAME (WINDOW_FRAME (w)),
old_buffer, selected_window, true));
mode_line_proptrans_alist = Qnil;
Fselect_window (window, Qt);
set_buffer_internal_1 (XBUFFER (buffer));
init_iterator (&it, w, -1, -1, NULL, face_id);
if (no_props)
{
mode_line_target = MODE_LINE_NOPROP;
mode_line_string_face_prop = Qnil;
mode_line_string_list = Qnil;
string_start = MODE_LINE_NOPROP_LEN (0);
}
else
{
mode_line_target = MODE_LINE_STRING;
mode_line_string_list = Qnil;
mode_line_string_face = face;
mode_line_string_face_prop
= NILP (face) ? Qnil : list2 (Qface, face);
}
push_kboard (FRAME_KBOARD (it.f));
display_mode_element (&it, 0, 0, 0, format, Qnil, false);
pop_kboard ();
if (no_props)
{
len = MODE_LINE_NOPROP_LEN (string_start);
str = make_string (mode_line_noprop_buf + string_start, len);
}
else
{
mode_line_string_list = Fnreverse (mode_line_string_list);
str = Fmapconcat (Qidentity, mode_line_string_list,
empty_unibyte_string);
}
unbind_to (count, Qnil);
return str;
}
/* Write a null-terminated, right justified decimal representation of
the positive integer D to BUF using a minimal field width WIDTH. */
static void
pint2str (register char *buf, register int width, register ptrdiff_t d)
{
register char *p = buf;
if (d <= 0)
*p++ = '0';
else
{
while (d > 0)
{
*p++ = d % 10 + '0';
d /= 10;
}
}
for (width -= (int) (p - buf); width > 0; --width)
*p++ = ' ';
*p-- = '\0';
while (p > buf)
{
d = *buf;
*buf++ = *p;
*p-- = d;
}
}
/* Write a null-terminated, right justified decimal and "human
readable" representation of the nonnegative integer D to BUF using
a minimal field width WIDTH. D should be smaller than 999.5e24. */
static const char power_letter[] =
{
0, /* no letter */
'k', /* kilo */
'M', /* mega */
'G', /* giga */
'T', /* tera */
'P', /* peta */
'E', /* exa */
'Z', /* zetta */
'Y' /* yotta */
};
static void
pint2hrstr (char *buf, int width, ptrdiff_t d)
{
/* We aim to represent the nonnegative integer D as
QUOTIENT.TENTHS * 10 ^ (3 * EXPONENT). */
ptrdiff_t quotient = d;
int remainder = 0;
/* -1 means: do not use TENTHS. */
int tenths = -1;
int exponent = 0;
/* Length of QUOTIENT.TENTHS as a string. */
int length;
char * psuffix;
char * p;
if (quotient >= 1000)
{
/* Scale to the appropriate EXPONENT. */
do
{
remainder = quotient % 1000;
quotient /= 1000;
exponent++;
}
while (quotient >= 1000);
/* Round to nearest and decide whether to use TENTHS or not. */
if (quotient <= 9)
{
tenths = remainder / 100;
if (remainder % 100 >= 50)
{
if (tenths < 9)
tenths++;
else
{
quotient++;
if (quotient == 10)
tenths = -1;
else
tenths = 0;
}
}
}
else
if (remainder >= 500)
{
if (quotient < 999)
quotient++;
else
{
quotient = 1;
exponent++;
tenths = 0;
}
}
}
/* Calculate the LENGTH of QUOTIENT.TENTHS as a string. */
if (tenths == -1 && quotient <= 99)
if (quotient <= 9)
length = 1;
else
length = 2;
else
length = 3;
p = psuffix = buf + max (width, length);
/* Print EXPONENT. */
*psuffix++ = power_letter[exponent];
*psuffix = '\0';
/* Print TENTHS. */
if (tenths >= 0)
{
*--p = '0' + tenths;
*--p = '.';
}
/* Print QUOTIENT. */
do
{
int digit = quotient % 10;
*--p = '0' + digit;
}
while ((quotient /= 10) != 0);
/* Print leading spaces. */
while (buf < p)
*--p = ' ';
}
/* Set a mnemonic character for coding_system (Lisp symbol) in BUF.
If EOL_FLAG, set also a mnemonic character for end-of-line
type of CODING_SYSTEM. Return updated pointer into BUF. */
static unsigned char invalid_eol_type[] = "(*invalid*)";
static char *
decode_mode_spec_coding (Lisp_Object coding_system, char *buf, bool eol_flag)
{
Lisp_Object val;
bool multibyte = !NILP (BVAR (current_buffer, enable_multibyte_characters));
const unsigned char *eol_str;
int eol_str_len;
/* The EOL conversion we are using. */
Lisp_Object eoltype;
val = CODING_SYSTEM_SPEC (coding_system);
eoltype = Qnil;
if (!VECTORP (val)) /* Not yet decided. */
{
*buf++ = multibyte ? '-' : ' ';
if (eol_flag)
eoltype = eol_mnemonic_undecided;
/* Don't mention EOL conversion if it isn't decided. */
}
else
{
Lisp_Object attrs;
Lisp_Object eolvalue;
attrs = AREF (val, 0);
eolvalue = AREF (val, 2);
*buf++ = multibyte
? XFASTINT (CODING_ATTR_MNEMONIC (attrs))
: ' ';
if (eol_flag)
{
/* The EOL conversion that is normal on this system. */
if (NILP (eolvalue)) /* Not yet decided. */
eoltype = eol_mnemonic_undecided;
else if (VECTORP (eolvalue)) /* Not yet decided. */
eoltype = eol_mnemonic_undecided;
else /* eolvalue is Qunix, Qdos, or Qmac. */
eoltype = (EQ (eolvalue, Qunix)
? eol_mnemonic_unix
: EQ (eolvalue, Qdos)
? eol_mnemonic_dos : eol_mnemonic_mac);
}
}
if (eol_flag)
{
/* Mention the EOL conversion if it is not the usual one. */
if (STRINGP (eoltype))
{
eol_str = SDATA (eoltype);
eol_str_len = SBYTES (eoltype);
}
else if (CHARACTERP (eoltype))
{
int c = XFASTINT (eoltype);
return buf + CHAR_STRING (c, (unsigned char *) buf);
}
else
{
eol_str = invalid_eol_type;
eol_str_len = sizeof (invalid_eol_type) - 1;
}
memcpy (buf, eol_str, eol_str_len);
buf += eol_str_len;
}
return buf;
}
/* Return the approximate percentage N is of D (rounding upward), or 99,
whichever is less. Assume 0 < D and 0 <= N <= D * INT_MAX / 100. */
static int
percent99 (ptrdiff_t n, ptrdiff_t d)
{
int percent = (d - 1 + 100.0 * n) / d;
return min (percent, 99);
}
/* Return a string for the output of a mode line %-spec for window W,
generated by character C. FIELD_WIDTH > 0 means pad the string
returned with spaces to that value. Return a Lisp string in
*STRING if the resulting string is taken from that Lisp string.
Note we operate on the current buffer for most purposes. */
static char lots_of_dashes[] = "--------------------------------------------------------------------------------------------------------------------------------------------";
static const char *
decode_mode_spec (struct window *w, register int c, int field_width,
Lisp_Object *string)
{
Lisp_Object obj;
struct frame *f = XFRAME (WINDOW_FRAME (w));
char *decode_mode_spec_buf = f->decode_mode_spec_buffer;
/* We are going to use f->decode_mode_spec_buffer as the buffer to
produce strings from numerical values, so limit preposterously
large values of FIELD_WIDTH to avoid overrunning the buffer's
end. The size of the buffer is enough for FRAME_MESSAGE_BUF_SIZE
bytes plus the terminating null. */
int width = min (field_width, FRAME_MESSAGE_BUF_SIZE (f));
struct buffer *b = current_buffer;
obj = Qnil;
*string = Qnil;
switch (c)
{
case '*':
if (!NILP (BVAR (b, read_only)))
return "%";
if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
return "*";
return "-";
case '+':
/* This differs from %* only for a modified read-only buffer. */
if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
return "*";
if (!NILP (BVAR (b, read_only)))
return "%";
return "-";
case '&':
/* This differs from %* in ignoring read-only-ness. */
if (BUF_MODIFF (b) > BUF_SAVE_MODIFF (b))
return "*";
return "-";
case '%':
return "%";
case '[':
{
int i;
char *p;
if (command_loop_level > 5)
return "[[[... ";
p = decode_mode_spec_buf;
for (i = 0; i < command_loop_level; i++)
*p++ = '[';
*p = 0;
return decode_mode_spec_buf;
}
case ']':
{
int i;
char *p;
if (command_loop_level > 5)
return " ...]]]";
p = decode_mode_spec_buf;
for (i = 0; i < command_loop_level; i++)
*p++ = ']';
*p = 0;
return decode_mode_spec_buf;
}
case '-':
{
register int i;
/* Let lots_of_dashes be a string of infinite length. */
if (mode_line_target == MODE_LINE_NOPROP
|| mode_line_target == MODE_LINE_STRING)
return "--";
if (field_width <= 0
|| field_width > sizeof (lots_of_dashes))
{
for (i = 0; i < FRAME_MESSAGE_BUF_SIZE (f) - 1; ++i)
decode_mode_spec_buf[i] = '-';
decode_mode_spec_buf[i] = '\0';
return decode_mode_spec_buf;
}
else
return lots_of_dashes;
}
case 'b':
obj = BVAR (b, name);
break;
case 'c':
/* %c and %l are ignored in `frame-title-format'.
(In redisplay_internal, the frame title is drawn _before_ the
windows are updated, so the stuff which depends on actual
window contents (such as %l) may fail to render properly, or
even crash emacs.) */
if (mode_line_target == MODE_LINE_TITLE)
return "";
else
{
ptrdiff_t col = current_column ();
w->column_number_displayed = col;
pint2str (decode_mode_spec_buf, width, col);
return decode_mode_spec_buf;
}
case 'e':
#if !defined SYSTEM_MALLOC && !defined HYBRID_MALLOC
{
if (NILP (Vmemory_full))
return "";
else
return "!MEM FULL! ";
}
#else
return "";
#endif
case 'F':
/* %F displays the frame name. */
if (!NILP (f->title))
return SSDATA (f->title);
if (f->explicit_name || ! FRAME_WINDOW_P (f))
return SSDATA (f->name);
return "Emacs";
case 'f':
obj = BVAR (b, filename);
break;
case 'i':
{
ptrdiff_t size = ZV - BEGV;
pint2str (decode_mode_spec_buf, width, size);
return decode_mode_spec_buf;
}
case 'I':
{
ptrdiff_t size = ZV - BEGV;
pint2hrstr (decode_mode_spec_buf, width, size);
return decode_mode_spec_buf;
}
case 'l':
{
ptrdiff_t startpos, startpos_byte, line, linepos, linepos_byte;
ptrdiff_t topline, nlines, height;
ptrdiff_t junk;
/* %c and %l are ignored in `frame-title-format'. */
if (mode_line_target == MODE_LINE_TITLE)
return "";
startpos = marker_position (w->start);
startpos_byte = marker_byte_position (w->start);
height = WINDOW_TOTAL_LINES (w);
/* If we decided that this buffer isn't suitable for line numbers,
don't forget that too fast. */
if (w->base_line_pos == -1)
goto no_value;
/* If the buffer is very big, don't waste time. */
if (INTEGERP (Vline_number_display_limit)
&& BUF_ZV (b) - BUF_BEGV (b) > XINT (Vline_number_display_limit))
{
w->base_line_pos = 0;
w->base_line_number = 0;
goto no_value;
}
if (w->base_line_number > 0
&& w->base_line_pos > 0
&& w->base_line_pos <= startpos)
{
line = w->base_line_number;
linepos = w->base_line_pos;
linepos_byte = buf_charpos_to_bytepos (b, linepos);
}
else
{
line = 1;
linepos = BUF_BEGV (b);
linepos_byte = BUF_BEGV_BYTE (b);
}
/* Count lines from base line to window start position. */
nlines = display_count_lines (linepos_byte,
startpos_byte,
startpos, &junk);
topline = nlines + line;
/* Determine a new base line, if the old one is too close
or too far away, or if we did not have one.
"Too close" means it's plausible a scroll-down would
go back past it. */
if (startpos == BUF_BEGV (b))
{
w->base_line_number = topline;
w->base_line_pos = BUF_BEGV (b);
}
else if (nlines < height + 25 || nlines > height * 3 + 50
|| linepos == BUF_BEGV (b))
{
ptrdiff_t limit = BUF_BEGV (b);
ptrdiff_t limit_byte = BUF_BEGV_BYTE (b);
ptrdiff_t position;
ptrdiff_t distance =
(height * 2 + 30) * line_number_display_limit_width;
if (startpos - distance > limit)
{
limit = startpos - distance;
limit_byte = CHAR_TO_BYTE (limit);
}
nlines = display_count_lines (startpos_byte,
limit_byte,
- (height * 2 + 30),
&position);
/* If we couldn't find the lines we wanted within
line_number_display_limit_width chars per line,
give up on line numbers for this window. */
if (position == limit_byte && limit == startpos - distance)
{
w->base_line_pos = -1;
w->base_line_number = 0;
goto no_value;
}
w->base_line_number = topline - nlines;
w->base_line_pos = BYTE_TO_CHAR (position);
}
/* Now count lines from the start pos to point. */
nlines = display_count_lines (startpos_byte,
PT_BYTE, PT, &junk);
/* Record that we did display the line number. */
line_number_displayed = true;
/* Make the string to show. */
pint2str (decode_mode_spec_buf, width, topline + nlines);
return decode_mode_spec_buf;
no_value:
{
char *p = decode_mode_spec_buf;
int pad = width - 2;
while (pad-- > 0)
*p++ = ' ';
*p++ = '?';
*p++ = '?';
*p = '\0';
return decode_mode_spec_buf;
}
}
break;
case 'm':
obj = BVAR (b, mode_name);
break;
case 'n':
if (BUF_BEGV (b) > BUF_BEG (b) || BUF_ZV (b) < BUF_Z (b))
return " Narrow";
break;
case 'p':
{
ptrdiff_t pos = marker_position (w->start);
ptrdiff_t begv = BUF_BEGV (b);
ptrdiff_t zv = BUF_ZV (b);
if (w->window_end_pos <= BUF_Z (b) - zv)
return pos <= begv ? "All" : "Bottom";
else if (pos <= begv)
return "Top";
else
{
sprintf (decode_mode_spec_buf, "%2d%%",
percent99 (pos - begv, zv - begv));
return decode_mode_spec_buf;
}
}
/* Display percentage of size above the bottom of the screen. */
case 'P':
{
ptrdiff_t toppos = marker_position (w->start);
ptrdiff_t botpos = BUF_Z (b) - w->window_end_pos;
ptrdiff_t begv = BUF_BEGV (b);
ptrdiff_t zv = BUF_ZV (b);
if (zv <= botpos)
return toppos <= begv ? "All" : "Bottom";
else
{
sprintf (decode_mode_spec_buf,
&"Top%2d%%"[begv < toppos ? sizeof "Top" - 1 : 0],
percent99 (botpos - begv, zv - begv));
return decode_mode_spec_buf;
}
}
case 's':
/* status of process */
obj = Fget_buffer_process (Fcurrent_buffer ());
if (NILP (obj))
return "no process";
#ifndef MSDOS
obj = Fsymbol_name (Fprocess_status (obj));
#endif
break;
case '@':
{
ptrdiff_t count = inhibit_garbage_collection ();
Lisp_Object curdir = BVAR (current_buffer, directory);
Lisp_Object val = Qnil;
if (STRINGP (curdir))
val = call1 (intern ("file-remote-p"), curdir);
unbind_to (count, Qnil);
if (NILP (val))
return "-";
else
return "@";
}
case 'z':
/* coding-system (not including end-of-line format) */
case 'Z':
/* coding-system (including end-of-line type) */
{
bool eol_flag = (c == 'Z');
char *p = decode_mode_spec_buf;
if (! FRAME_WINDOW_P (f))
{
/* No need to mention EOL here--the terminal never needs
to do EOL conversion. */
p = decode_mode_spec_coding (CODING_ID_NAME
(FRAME_KEYBOARD_CODING (f)->id),
p, false);
p = decode_mode_spec_coding (CODING_ID_NAME
(FRAME_TERMINAL_CODING (f)->id),
p, false);
}
p = decode_mode_spec_coding (BVAR (b, buffer_file_coding_system),
p, eol_flag);
#if false /* This proves to be annoying; I think we can do without. -- rms. */
#ifdef subprocesses
obj = Fget_buffer_process (Fcurrent_buffer ());
if (PROCESSP (obj))
{
p = decode_mode_spec_coding
(XPROCESS (obj)->decode_coding_system, p, eol_flag);
p = decode_mode_spec_coding
(XPROCESS (obj)->encode_coding_system, p, eol_flag);
}
#endif /* subprocesses */
#endif /* false */
*p = 0;
return decode_mode_spec_buf;
}
}
if (STRINGP (obj))
{
*string = obj;
return SSDATA (obj);
}
else
return "";
}
/* Count up to COUNT lines starting from START_BYTE. COUNT negative
means count lines back from START_BYTE. But don't go beyond
LIMIT_BYTE. Return the number of lines thus found (always
nonnegative).
Set *BYTE_POS_PTR to the byte position where we stopped. This is
either the position COUNT lines after/before START_BYTE, if we
found COUNT lines, or LIMIT_BYTE if we hit the limit before finding
COUNT lines. */
static ptrdiff_t
display_count_lines (ptrdiff_t start_byte,
ptrdiff_t limit_byte, ptrdiff_t count,
ptrdiff_t *byte_pos_ptr)
{
register unsigned char *cursor;
unsigned char *base;
register ptrdiff_t ceiling;
register unsigned char *ceiling_addr;
ptrdiff_t orig_count = count;
/* If we are not in selective display mode,
check only for newlines. */
bool selective_display
= (!NILP (BVAR (current_buffer, selective_display))
&& !INTEGERP (BVAR (current_buffer, selective_display)));
if (count > 0)
{
while (start_byte < limit_byte)
{
ceiling = BUFFER_CEILING_OF (start_byte);
ceiling = min (limit_byte - 1, ceiling);
ceiling_addr = BYTE_POS_ADDR (ceiling) + 1;
base = (cursor = BYTE_POS_ADDR (start_byte));
do
{
if (selective_display)
{
while (*cursor != '\n' && *cursor != 015
&& ++cursor != ceiling_addr)
continue;
if (cursor == ceiling_addr)
break;
}
else
{
cursor = memchr (cursor, '\n', ceiling_addr - cursor);
if (! cursor)
break;
}
cursor++;
if (--count == 0)
{
start_byte += cursor - base;
*byte_pos_ptr = start_byte;
return orig_count;
}
}
while (cursor < ceiling_addr);
start_byte += ceiling_addr - base;
}
}
else
{
while (start_byte > limit_byte)
{
ceiling = BUFFER_FLOOR_OF (start_byte - 1);
ceiling = max (limit_byte, ceiling);
ceiling_addr = BYTE_POS_ADDR (ceiling);
base = (cursor = BYTE_POS_ADDR (start_byte - 1) + 1);
while (true)
{
if (selective_display)
{
while (--cursor >= ceiling_addr
&& *cursor != '\n' && *cursor != 015)
continue;
if (cursor < ceiling_addr)
break;
}
else
{
cursor = memrchr (ceiling_addr, '\n', cursor - ceiling_addr);
if (! cursor)
break;
}
if (++count == 0)
{
start_byte += cursor - base + 1;
*byte_pos_ptr = start_byte;
/* When scanning backwards, we should
not count the newline posterior to which we stop. */
return - orig_count - 1;
}
}
start_byte += ceiling_addr - base;
}
}
*byte_pos_ptr = limit_byte;
if (count < 0)
return - orig_count + count;
return orig_count - count;
}
\f
/***********************************************************************
Displaying strings
***********************************************************************/
/* Display a NUL-terminated string, starting with index START.
If STRING is non-null, display that C string. Otherwise, the Lisp
string LISP_STRING is displayed. There's a case that STRING is
non-null and LISP_STRING is not nil. It means STRING is a string
data of LISP_STRING. In that case, we display LISP_STRING while
ignoring its text properties.
If FACE_STRING is not nil, FACE_STRING_POS is a position in
FACE_STRING. Display STRING or LISP_STRING with the face at
FACE_STRING_POS in FACE_STRING:
Display the string in the environment given by IT, but use the
standard display table, temporarily.
FIELD_WIDTH is the minimum number of output glyphs to produce.
If STRING has fewer characters than FIELD_WIDTH, pad to the right
with spaces. If STRING has more characters, more than FIELD_WIDTH
glyphs will be produced. FIELD_WIDTH <= 0 means don't pad.
PRECISION is the maximum number of characters to output from
STRING. PRECISION < 0 means don't truncate the string.
This is roughly equivalent to printf format specifiers:
FIELD_WIDTH PRECISION PRINTF
----------------------------------------
-1 -1 %s
-1 10 %.10s
10 -1 %10s
20 10 %20.10s
MULTIBYTE zero means do not display multibyte chars, > 0 means do
display them, and < 0 means obey the current buffer's value of
enable_multibyte_characters.
Value is the number of columns displayed. */
static int
display_string (const char *string, Lisp_Object lisp_string, Lisp_Object face_string,
ptrdiff_t face_string_pos, ptrdiff_t start, struct it *it,
int field_width, int precision, int max_x, int multibyte)
{
int hpos_at_start = it->hpos;
int saved_face_id = it->face_id;
struct glyph_row *row = it->glyph_row;
ptrdiff_t it_charpos;
/* Initialize the iterator IT for iteration over STRING beginning
with index START. */
reseat_to_string (it, NILP (lisp_string) ? string : NULL, lisp_string, start,
precision, field_width, multibyte);
if (string && STRINGP (lisp_string))
/* LISP_STRING is the one returned by decode_mode_spec. We should
ignore its text properties. */
it->stop_charpos = it->end_charpos;
/* If displaying STRING, set up the face of the iterator from
FACE_STRING, if that's given. */
if (STRINGP (face_string))
{
ptrdiff_t endptr;
struct face *face;
it->face_id
= face_at_string_position (it->w, face_string, face_string_pos,
0, &endptr, it->base_face_id, false);
face = FACE_FROM_ID (it->f, it->face_id);
it->face_box_p = face->box != FACE_NO_BOX;
}
/* Set max_x to the maximum allowed X position. Don't let it go
beyond the right edge of the window. */
if (max_x <= 0)
max_x = it->last_visible_x;
else
max_x = min (max_x, it->last_visible_x);
/* Skip over display elements that are not visible. because IT->w is
hscrolled. */
if (it->current_x < it->first_visible_x)
move_it_in_display_line_to (it, 100000, it->first_visible_x,
MOVE_TO_POS | MOVE_TO_X);
row->ascent = it->max_ascent;
row->height = it->max_ascent + it->max_descent;
row->phys_ascent = it->max_phys_ascent;
row->phys_height = it->max_phys_ascent + it->max_phys_descent;
row->extra_line_spacing = it->max_extra_line_spacing;
if (STRINGP (it->string))
it_charpos = IT_STRING_CHARPOS (*it);
else
it_charpos = IT_CHARPOS (*it);
/* This condition is for the case that we are called with current_x
past last_visible_x. */
while (it->current_x < max_x)
{
int x_before, x, n_glyphs_before, i, nglyphs;
/* Get the next display element. */
if (!get_next_display_element (it))
break;
/* Produce glyphs. */
x_before = it->current_x;
n_glyphs_before = row->used[TEXT_AREA];
PRODUCE_GLYPHS (it);
nglyphs = row->used[TEXT_AREA] - n_glyphs_before;
i = 0;
x = x_before;
while (i < nglyphs)
{
struct glyph *glyph = row->glyphs[TEXT_AREA] + n_glyphs_before + i;
if (it->line_wrap != TRUNCATE
&& x + glyph->pixel_width > max_x)
{
/* End of continued line or max_x reached. */
if (CHAR_GLYPH_PADDING_P (*glyph))
{
/* A wide character is unbreakable. */
if (row->reversed_p)
unproduce_glyphs (it, row->used[TEXT_AREA]
- n_glyphs_before);
row->used[TEXT_AREA] = n_glyphs_before;
it->current_x = x_before;
}
else
{
if (row->reversed_p)
unproduce_glyphs (it, row->used[TEXT_AREA]
- (n_glyphs_before + i));
row->used[TEXT_AREA] = n_glyphs_before + i;
it->current_x = x;
}
break;
}
else if (x + glyph->pixel_width >= it->first_visible_x)
{
/* Glyph is at least partially visible. */
++it->hpos;
if (x < it->first_visible_x)
row->x = x - it->first_visible_x;
}
else
{
/* Glyph is off the left margin of the display area.
Should not happen. */
emacs_abort ();
}
row->ascent = max (row->ascent, it->max_ascent);
row->height = max (row->height, it->max_ascent + it->max_descent);
row->phys_ascent = max (row->phys_ascent, it->max_phys_ascent);
row->phys_height = max (row->phys_height,
it->max_phys_ascent + it->max_phys_descent);
row->extra_line_spacing = max (row->extra_line_spacing,
it->max_extra_line_spacing);
x += glyph->pixel_width;
++i;
}
/* Stop if max_x reached. */
if (i < nglyphs)
break;
/* Stop at line ends. */
if (ITERATOR_AT_END_OF_LINE_P (it))
{
it->continuation_lines_width = 0;
break;
}
set_iterator_to_next (it, true);
if (STRINGP (it->string))
it_charpos = IT_STRING_CHARPOS (*it);
else
it_charpos = IT_CHARPOS (*it);
/* Stop if truncating at the right edge. */
if (it->line_wrap == TRUNCATE
&& it->current_x >= it->last_visible_x)
{
/* Add truncation mark, but don't do it if the line is
truncated at a padding space. */
if (it_charpos < it->string_nchars)
{
if (!FRAME_WINDOW_P (it->f))
{
int ii, n;
if (it->current_x > it->last_visible_x)
{
if (!row->reversed_p)
{
for (ii = row->used[TEXT_AREA] - 1; ii > 0; --ii)
if (!CHAR_GLYPH_PADDING_P (row->glyphs[TEXT_AREA][ii]))
break;
}
else
{
for (ii = 0; ii < row->used[TEXT_AREA]; ii++)
if (!CHAR_GLYPH_PADDING_P (row->glyphs[TEXT_AREA][ii]))
break;
unproduce_glyphs (it, ii + 1);
ii = row->used[TEXT_AREA] - (ii + 1);
}
for (n = row->used[TEXT_AREA]; ii < n; ++ii)
{
row->used[TEXT_AREA] = ii;
produce_special_glyphs (it, IT_TRUNCATION);
}
}
produce_special_glyphs (it, IT_TRUNCATION);
}
row->truncated_on_right_p = true;
}
break;
}
}
/* Maybe insert a truncation at the left. */
if (it->first_visible_x
&& it_charpos > 0)
{
if (!FRAME_WINDOW_P (it->f)
|| (row->reversed_p
? WINDOW_RIGHT_FRINGE_WIDTH (it->w)
: WINDOW_LEFT_FRINGE_WIDTH (it->w)) == 0)
insert_left_trunc_glyphs (it);
row->truncated_on_left_p = true;
}
it->face_id = saved_face_id;
/* Value is number of columns displayed. */
return it->hpos - hpos_at_start;
}
\f
/* This is like a combination of memq and assq. Return 1/2 if PROPVAL
appears as an element of LIST or as the car of an element of LIST.
If PROPVAL is a list, compare each element against LIST in that
way, and return 1/2 if any element of PROPVAL is found in LIST.
Otherwise return 0. This function cannot quit.
The return value is 2 if the text is invisible but with an ellipsis
and 1 if it's invisible and without an ellipsis. */
int
invisible_prop (Lisp_Object propval, Lisp_Object list)
{
Lisp_Object tail, proptail;
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (EQ (propval, tem))
return 1;
if (CONSP (tem) && EQ (propval, XCAR (tem)))
return NILP (XCDR (tem)) ? 1 : 2;
}
if (CONSP (propval))
{
for (proptail = propval; CONSP (proptail); proptail = XCDR (proptail))
{
Lisp_Object propelt;
propelt = XCAR (proptail);
for (tail = list; CONSP (tail); tail = XCDR (tail))
{
register Lisp_Object tem;
tem = XCAR (tail);
if (EQ (propelt, tem))
return 1;
if (CONSP (tem) && EQ (propelt, XCAR (tem)))
return NILP (XCDR (tem)) ? 1 : 2;
}
}
}
return 0;
}
DEFUN ("invisible-p", Finvisible_p, Sinvisible_p, 1, 1, 0,
doc: /* Non-nil if the property makes the text invisible.
POS-OR-PROP can be a marker or number, in which case it is taken to be
a position in the current buffer and the value of the `invisible' property
is checked; or it can be some other value, which is then presumed to be the
value of the `invisible' property of the text of interest.
The non-nil value returned can be t for truly invisible text or something
else if the text is replaced by an ellipsis. */)
(Lisp_Object pos_or_prop)
{
Lisp_Object prop
= (NATNUMP (pos_or_prop) || MARKERP (pos_or_prop)
? Fget_char_property (pos_or_prop, Qinvisible, Qnil)
: pos_or_prop);
int invis = TEXT_PROP_MEANS_INVISIBLE (prop);
return (invis == 0 ? Qnil
: invis == 1 ? Qt
: make_number (invis));
}
/* Calculate a width or height in pixels from a specification using
the following elements:
SPEC ::=
NUM - a (fractional) multiple of the default font width/height
(NUM) - specifies exactly NUM pixels
UNIT - a fixed number of pixels, see below.
ELEMENT - size of a display element in pixels, see below.
(NUM . SPEC) - equals NUM * SPEC
(+ SPEC SPEC ...) - add pixel values
(- SPEC SPEC ...) - subtract pixel values
(- SPEC) - negate pixel value
NUM ::=
INT or FLOAT - a number constant
SYMBOL - use symbol's (buffer local) variable binding.
UNIT ::=
in - pixels per inch *)
mm - pixels per 1/1000 meter *)
cm - pixels per 1/100 meter *)
width - width of current font in pixels.
height - height of current font in pixels.
*) using the ratio(s) defined in display-pixels-per-inch.
ELEMENT ::=
left-fringe - left fringe width in pixels
right-fringe - right fringe width in pixels
left-margin - left margin width in pixels
right-margin - right margin width in pixels
scroll-bar - scroll-bar area width in pixels
Examples:
Pixels corresponding to 5 inches:
(5 . in)
Total width of non-text areas on left side of window (if scroll-bar is on left):
'(space :width (+ left-fringe left-margin scroll-bar))
Align to first text column (in header line):
'(space :align-to 0)
Align to middle of text area minus half the width of variable `my-image'
containing a loaded image:
'(space :align-to (0.5 . (- text my-image)))
Width of left margin minus width of 1 character in the default font:
'(space :width (- left-margin 1))
Width of left margin minus width of 2 characters in the current font:
'(space :width (- left-margin (2 . width)))
Center 1 character over left-margin (in header line):
'(space :align-to (+ left-margin (0.5 . left-margin) -0.5))
Different ways to express width of left fringe plus left margin minus one pixel:
'(space :width (- (+ left-fringe left-margin) (1)))
'(space :width (+ left-fringe left-margin (- (1))))
'(space :width (+ left-fringe left-margin (-1)))
*/
static bool
calc_pixel_width_or_height (double *res, struct it *it, Lisp_Object prop,
struct font *font, bool width_p, int *align_to)
{
double pixels;
# define OK_PIXELS(val) (*res = (val), true)
# define OK_ALIGN_TO(val) (*align_to = (val), true)
if (NILP (prop))
return OK_PIXELS (0);
eassert (FRAME_LIVE_P (it->f));
if (SYMBOLP (prop))
{
if (SCHARS (SYMBOL_NAME (prop)) == 2)
{
char *unit = SSDATA (SYMBOL_NAME (prop));
if (unit[0] == 'i' && unit[1] == 'n')
pixels = 1.0;
else if (unit[0] == 'm' && unit[1] == 'm')
pixels = 25.4;
else if (unit[0] == 'c' && unit[1] == 'm')
pixels = 2.54;
else
pixels = 0;
if (pixels > 0)
{
double ppi = (width_p ? FRAME_RES_X (it->f)
: FRAME_RES_Y (it->f));
if (ppi > 0)
return OK_PIXELS (ppi / pixels);
return false;
}
}
#ifdef HAVE_WINDOW_SYSTEM
if (EQ (prop, Qheight))
return OK_PIXELS (font
? normal_char_height (font, -1)
: FRAME_LINE_HEIGHT (it->f));
if (EQ (prop, Qwidth))
return OK_PIXELS (font
? FONT_WIDTH (font)
: FRAME_COLUMN_WIDTH (it->f));
#else
if (EQ (prop, Qheight) || EQ (prop, Qwidth))
return OK_PIXELS (1);
#endif
if (EQ (prop, Qtext))
return OK_PIXELS (width_p
? window_box_width (it->w, TEXT_AREA)
: WINDOW_BOX_HEIGHT_NO_MODE_LINE (it->w));
if (align_to && *align_to < 0)
{
*res = 0;
if (EQ (prop, Qleft))
return OK_ALIGN_TO (window_box_left_offset (it->w, TEXT_AREA));
if (EQ (prop, Qright))
return OK_ALIGN_TO (window_box_right_offset (it->w, TEXT_AREA));
if (EQ (prop, Qcenter))
return OK_ALIGN_TO (window_box_left_offset (it->w, TEXT_AREA)
+ window_box_width (it->w, TEXT_AREA) / 2);
if (EQ (prop, Qleft_fringe))
return OK_ALIGN_TO (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (it->w)
? WINDOW_LEFT_SCROLL_BAR_AREA_WIDTH (it->w)
: window_box_right_offset (it->w, LEFT_MARGIN_AREA));
if (EQ (prop, Qright_fringe))
return OK_ALIGN_TO (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (it->w)
? window_box_right_offset (it->w, RIGHT_MARGIN_AREA)
: window_box_right_offset (it->w, TEXT_AREA));
if (EQ (prop, Qleft_margin))
return OK_ALIGN_TO (window_box_left_offset (it->w, LEFT_MARGIN_AREA));
if (EQ (prop, Qright_margin))
return OK_ALIGN_TO (window_box_left_offset (it->w, RIGHT_MARGIN_AREA));
if (EQ (prop, Qscroll_bar))
return OK_ALIGN_TO (WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (it->w)
? 0
: (window_box_right_offset (it->w, RIGHT_MARGIN_AREA)
+ (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (it->w)
? WINDOW_RIGHT_FRINGE_WIDTH (it->w)
: 0)));
}
else
{
if (EQ (prop, Qleft_fringe))
return OK_PIXELS (WINDOW_LEFT_FRINGE_WIDTH (it->w));
if (EQ (prop, Qright_fringe))
return OK_PIXELS (WINDOW_RIGHT_FRINGE_WIDTH (it->w));
if (EQ (prop, Qleft_margin))
return OK_PIXELS (WINDOW_LEFT_MARGIN_WIDTH (it->w));
if (EQ (prop, Qright_margin))
return OK_PIXELS (WINDOW_RIGHT_MARGIN_WIDTH (it->w));
if (EQ (prop, Qscroll_bar))
return OK_PIXELS (WINDOW_SCROLL_BAR_AREA_WIDTH (it->w));
}
prop = buffer_local_value (prop, it->w->contents);
if (EQ (prop, Qunbound))
prop = Qnil;
}
if (NUMBERP (prop))
{
int base_unit = (width_p
? FRAME_COLUMN_WIDTH (it->f)
: FRAME_LINE_HEIGHT (it->f));
return OK_PIXELS (XFLOATINT (prop) * base_unit);
}
if (CONSP (prop))
{
Lisp_Object car = XCAR (prop);
Lisp_Object cdr = XCDR (prop);
if (SYMBOLP (car))
{
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (it->f)
&& valid_image_p (prop))
{
ptrdiff_t id = lookup_image (it->f, prop);
struct image *img = IMAGE_FROM_ID (it->f, id);
return OK_PIXELS (width_p ? img->width : img->height);
}
if (FRAME_WINDOW_P (it->f) && valid_xwidget_spec_p (prop))
{
/* TODO: Don't return dummy size. */
return OK_PIXELS (100);
}
#endif
if (EQ (car, Qplus) || EQ (car, Qminus))
{
bool first = true;
double px;
pixels = 0;
while (CONSP (cdr))
{
if (!calc_pixel_width_or_height (&px, it, XCAR (cdr),
font, width_p, align_to))
return false;
if (first)
pixels = (EQ (car, Qplus) ? px : -px), first = false;
else
pixels += px;
cdr = XCDR (cdr);
}
if (EQ (car, Qminus))
pixels = -pixels;
return OK_PIXELS (pixels);
}
car = buffer_local_value (car, it->w->contents);
if (EQ (car, Qunbound))
car = Qnil;
}
if (NUMBERP (car))
{
double fact;
pixels = XFLOATINT (car);
if (NILP (cdr))
return OK_PIXELS (pixels);
if (calc_pixel_width_or_height (&fact, it, cdr,
font, width_p, align_to))
return OK_PIXELS (pixels * fact);
return false;
}
return false;
}
return false;
}
void
get_font_ascent_descent (struct font *font, int *ascent, int *descent)
{
#ifdef HAVE_WINDOW_SYSTEM
normal_char_ascent_descent (font, -1, ascent, descent);
#else
*ascent = 1;
*descent = 0;
#endif
}
\f
/***********************************************************************
Glyph Display
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
#ifdef GLYPH_DEBUG
void
dump_glyph_string (struct glyph_string *s)
{
fprintf (stderr, "glyph string\n");
fprintf (stderr, " x, y, w, h = %d, %d, %d, %d\n",
s->x, s->y, s->width, s->height);
fprintf (stderr, " ybase = %d\n", s->ybase);
fprintf (stderr, " hl = %d\n", s->hl);
fprintf (stderr, " left overhang = %d, right = %d\n",
s->left_overhang, s->right_overhang);
fprintf (stderr, " nchars = %d\n", s->nchars);
fprintf (stderr, " extends to end of line = %d\n",
s->extends_to_end_of_line_p);
fprintf (stderr, " font height = %d\n", FONT_HEIGHT (s->font));
fprintf (stderr, " bg width = %d\n", s->background_width);
}
#endif /* GLYPH_DEBUG */
/* Initialize glyph string S. CHAR2B is a suitably allocated vector
of XChar2b structures for S; it can't be allocated in
init_glyph_string because it must be allocated via `alloca'. W
is the window on which S is drawn. ROW and AREA are the glyph row
and area within the row from which S is constructed. START is the
index of the first glyph structure covered by S. HL is a
face-override for drawing S. */
#ifdef HAVE_NTGUI
#define OPTIONAL_HDC(hdc) HDC hdc,
#define DECLARE_HDC(hdc) HDC hdc;
#define ALLOCATE_HDC(hdc, f) hdc = get_frame_dc ((f))
#define RELEASE_HDC(hdc, f) release_frame_dc ((f), (hdc))
#endif
#ifndef OPTIONAL_HDC
#define OPTIONAL_HDC(hdc)
#define DECLARE_HDC(hdc)
#define ALLOCATE_HDC(hdc, f)
#define RELEASE_HDC(hdc, f)
#endif
static void
init_glyph_string (struct glyph_string *s,
OPTIONAL_HDC (hdc)
XChar2b *char2b, struct window *w, struct glyph_row *row,
enum glyph_row_area area, int start, enum draw_glyphs_face hl)
{
memset (s, 0, sizeof *s);
s->w = w;
s->f = XFRAME (w->frame);
#ifdef HAVE_NTGUI
s->hdc = hdc;
#endif
s->display = FRAME_X_DISPLAY (s->f);
s->char2b = char2b;
s->hl = hl;
s->row = row;
s->area = area;
s->first_glyph = row->glyphs[area] + start;
s->height = row->height;
s->y = WINDOW_TO_FRAME_PIXEL_Y (w, row->y);
s->ybase = s->y + row->ascent;
}
/* Append the list of glyph strings with head H and tail T to the list
with head *HEAD and tail *TAIL. Set *HEAD and *TAIL to the result. */
static void
append_glyph_string_lists (struct glyph_string **head, struct glyph_string **tail,
struct glyph_string *h, struct glyph_string *t)
{
if (h)
{
if (*head)
(*tail)->next = h;
else
*head = h;
h->prev = *tail;
*tail = t;
}
}
/* Prepend the list of glyph strings with head H and tail T to the
list with head *HEAD and tail *TAIL. Set *HEAD and *TAIL to the
result. */
static void
prepend_glyph_string_lists (struct glyph_string **head, struct glyph_string **tail,
struct glyph_string *h, struct glyph_string *t)
{
if (h)
{
if (*head)
(*head)->prev = t;
else
*tail = t;
t->next = *head;
*head = h;
}
}
/* Append glyph string S to the list with head *HEAD and tail *TAIL.
Set *HEAD and *TAIL to the resulting list. */
static void
append_glyph_string (struct glyph_string **head, struct glyph_string **tail,
struct glyph_string *s)
{
s->next = s->prev = NULL;
append_glyph_string_lists (head, tail, s, s);
}
/* Get face and two-byte form of character C in face FACE_ID on frame F.
The encoding of C is returned in *CHAR2B. DISPLAY_P means
make sure that X resources for the face returned are allocated.
Value is a pointer to a realized face that is ready for display if
DISPLAY_P. */
static struct face *
get_char_face_and_encoding (struct frame *f, int c, int face_id,
XChar2b *char2b, bool display_p)
{
struct face *face = FACE_FROM_ID (f, face_id);
unsigned code = 0;
if (face->font)
{
code = face->font->driver->encode_char (face->font, c);
if (code == FONT_INVALID_CODE)
code = 0;
}
STORE_XCHAR2B (char2b, (code >> 8), (code & 0xFF));
/* Make sure X resources of the face are allocated. */
#ifdef HAVE_X_WINDOWS
if (display_p)
#endif
{
eassert (face != NULL);
prepare_face_for_display (f, face);
}
return face;
}
/* Get face and two-byte form of character glyph GLYPH on frame F.
The encoding of GLYPH->u.ch is returned in *CHAR2B. Value is
a pointer to a realized face that is ready for display. */
static struct face *
get_glyph_face_and_encoding (struct frame *f, struct glyph *glyph,
XChar2b *char2b)
{
struct face *face;
unsigned code = 0;
eassert (glyph->type == CHAR_GLYPH);
face = FACE_FROM_ID (f, glyph->face_id);
/* Make sure X resources of the face are allocated. */
prepare_face_for_display (f, face);
if (face->font)
{
if (CHAR_BYTE8_P (glyph->u.ch))
code = CHAR_TO_BYTE8 (glyph->u.ch);
else
code = face->font->driver->encode_char (face->font, glyph->u.ch);
if (code == FONT_INVALID_CODE)
code = 0;
}
STORE_XCHAR2B (char2b, (code >> 8), (code & 0xFF));
return face;
}
/* Get glyph code of character C in FONT in the two-byte form CHAR2B.
Return true iff FONT has a glyph for C. */
static bool
get_char_glyph_code (int c, struct font *font, XChar2b *char2b)
{
unsigned code;
if (CHAR_BYTE8_P (c))
code = CHAR_TO_BYTE8 (c);
else
code = font->driver->encode_char (font, c);
if (code == FONT_INVALID_CODE)
return false;
STORE_XCHAR2B (char2b, (code >> 8), (code & 0xFF));
return true;
}
/* Fill glyph string S with composition components specified by S->cmp.
BASE_FACE is the base face of the composition.
S->cmp_from is the index of the first component for S.
OVERLAPS non-zero means S should draw the foreground only, and use
its physical height for clipping. See also draw_glyphs.
Value is the index of a component not in S. */
static int
fill_composite_glyph_string (struct glyph_string *s, struct face *base_face,
int overlaps)
{
int i;
/* For all glyphs of this composition, starting at the offset
S->cmp_from, until we reach the end of the definition or encounter a
glyph that requires the different face, add it to S. */
struct face *face;
eassert (s);
s->for_overlaps = overlaps;
s->face = NULL;
s->font = NULL;
for (i = s->cmp_from; i < s->cmp->glyph_len; i++)
{
int c = COMPOSITION_GLYPH (s->cmp, i);
/* TAB in a composition means display glyphs with padding space
on the left or right. */
if (c != '\t')
{
int face_id = FACE_FOR_CHAR (s->f, base_face->ascii_face, c,
-1, Qnil);
face = get_char_face_and_encoding (s->f, c, face_id,
s->char2b + i, true);
if (face)
{
if (! s->face)
{
s->face = face;
s->font = s->face->font;
}
else if (s->face != face)
break;
}
}
++s->nchars;
}
s->cmp_to = i;
if (s->face == NULL)
{
s->face = base_face->ascii_face;
s->font = s->face->font;
}
/* All glyph strings for the same composition has the same width,
i.e. the width set for the first component of the composition. */
s->width = s->first_glyph->pixel_width;
/* If the specified font could not be loaded, use the frame's
default font, but record the fact that we couldn't load it in
the glyph string so that we can draw rectangles for the
characters of the glyph string. */
if (s->font == NULL)
{
s->font_not_found_p = true;
s->font = FRAME_FONT (s->f);
}
/* Adjust base line for subscript/superscript text. */
s->ybase += s->first_glyph->voffset;
return s->cmp_to;
}
static int
fill_gstring_glyph_string (struct glyph_string *s, int face_id,
int start, int end, int overlaps)
{
struct glyph *glyph, *last;
Lisp_Object lgstring;
int i;
s->for_overlaps = overlaps;
glyph = s->row->glyphs[s->area] + start;
last = s->row->glyphs[s->area] + end;
s->cmp_id = glyph->u.cmp.id;
s->cmp_from = glyph->slice.cmp.from;
s->cmp_to = glyph->slice.cmp.to + 1;
s->face = FACE_FROM_ID (s->f, face_id);
lgstring = composition_gstring_from_id (s->cmp_id);
s->font = XFONT_OBJECT (LGSTRING_FONT (lgstring));
glyph++;
while (glyph < last
&& glyph->u.cmp.automatic
&& glyph->u.cmp.id == s->cmp_id
&& s->cmp_to == glyph->slice.cmp.from)
s->cmp_to = (glyph++)->slice.cmp.to + 1;
for (i = s->cmp_from; i < s->cmp_to; i++)
{
Lisp_Object lglyph = LGSTRING_GLYPH (lgstring, i);
unsigned code = LGLYPH_CODE (lglyph);
STORE_XCHAR2B ((s->char2b + i), code >> 8, code & 0xFF);
}
s->width = composition_gstring_width (lgstring, s->cmp_from, s->cmp_to, NULL);
return glyph - s->row->glyphs[s->area];
}
/* Fill glyph string S from a sequence glyphs for glyphless characters.
See the comment of fill_glyph_string for arguments.
Value is the index of the first glyph not in S. */
static int
fill_glyphless_glyph_string (struct glyph_string *s, int face_id,
int start, int end, int overlaps)
{
struct glyph *glyph, *last;
int voffset;
eassert (s->first_glyph->type == GLYPHLESS_GLYPH);
s->for_overlaps = overlaps;
glyph = s->row->glyphs[s->area] + start;
last = s->row->glyphs[s->area] + end;
voffset = glyph->voffset;
s->face = FACE_FROM_ID (s->f, face_id);
s->font = s->face->font ? s->face->font : FRAME_FONT (s->f);
s->nchars = 1;
s->width = glyph->pixel_width;
glyph++;
while (glyph < last
&& glyph->type == GLYPHLESS_GLYPH
&& glyph->voffset == voffset
&& glyph->face_id == face_id)
{
s->nchars++;
s->width += glyph->pixel_width;
glyph++;
}
s->ybase += voffset;
return glyph - s->row->glyphs[s->area];
}
/* Fill glyph string S from a sequence of character glyphs.
FACE_ID is the face id of the string. START is the index of the
first glyph to consider, END is the index of the last + 1.
OVERLAPS non-zero means S should draw the foreground only, and use
its physical height for clipping. See also draw_glyphs.
Value is the index of the first glyph not in S. */
static int
fill_glyph_string (struct glyph_string *s, int face_id,
int start, int end, int overlaps)
{
struct glyph *glyph, *last;
int voffset;
bool glyph_not_available_p;
eassert (s->f == XFRAME (s->w->frame));
eassert (s->nchars == 0);
eassert (start >= 0 && end > start);
s->for_overlaps = overlaps;
glyph = s->row->glyphs[s->area] + start;
last = s->row->glyphs[s->area] + end;
voffset = glyph->voffset;
s->padding_p = glyph->padding_p;
glyph_not_available_p = glyph->glyph_not_available_p;
while (glyph < last
&& glyph->type == CHAR_GLYPH
&& glyph->voffset == voffset
/* Same face id implies same font, nowadays. */
&& glyph->face_id == face_id
&& glyph->glyph_not_available_p == glyph_not_available_p)
{
s->face = get_glyph_face_and_encoding (s->f, glyph,
s->char2b + s->nchars);
++s->nchars;
eassert (s->nchars <= end - start);
s->width += glyph->pixel_width;
if (glyph++->padding_p != s->padding_p)
break;
}
s->font = s->face->font;
/* If the specified font could not be loaded, use the frame's font,
but record the fact that we couldn't load it in
S->font_not_found_p so that we can draw rectangles for the
characters of the glyph string. */
if (s->font == NULL || glyph_not_available_p)
{
s->font_not_found_p = true;
s->font = FRAME_FONT (s->f);
}
/* Adjust base line for subscript/superscript text. */
s->ybase += voffset;
eassert (s->face && s->face->gc);
return glyph - s->row->glyphs[s->area];
}
/* Fill glyph string S from image glyph S->first_glyph. */
static void
fill_image_glyph_string (struct glyph_string *s)
{
eassert (s->first_glyph->type == IMAGE_GLYPH);
s->img = IMAGE_FROM_ID (s->f, s->first_glyph->u.img_id);
eassert (s->img);
s->slice = s->first_glyph->slice.img;
s->face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
s->font = s->face->font;
s->width = s->first_glyph->pixel_width;
/* Adjust base line for subscript/superscript text. */
s->ybase += s->first_glyph->voffset;
}
#ifdef HAVE_XWIDGETS
static void
fill_xwidget_glyph_string (struct glyph_string *s)
{
eassert (s->first_glyph->type == XWIDGET_GLYPH);
s->face = FACE_FROM_ID (s->f, s->first_glyph->face_id);
s->font = s->face->font;
s->width = s->first_glyph->pixel_width;
s->ybase += s->first_glyph->voffset;
s->xwidget = s->first_glyph->u.xwidget;
}
#endif
/* Fill glyph string S from a sequence of stretch glyphs.
START is the index of the first glyph to consider,
END is the index of the last + 1.
Value is the index of the first glyph not in S. */
static int
fill_stretch_glyph_string (struct glyph_string *s, int start, int end)
{
struct glyph *glyph, *last;
int voffset, face_id;
eassert (s->first_glyph->type == STRETCH_GLYPH);
glyph = s->row->glyphs[s->area] + start;
last = s->row->glyphs[s->area] + end;
face_id = glyph->face_id;
s->face = FACE_FROM_ID (s->f, face_id);
s->font = s->face->font;
s->width = glyph->pixel_width;
s->nchars = 1;
voffset = glyph->voffset;
for (++glyph;
(glyph < last
&& glyph->type == STRETCH_GLYPH
&& glyph->voffset == voffset
&& glyph->face_id == face_id);
++glyph)
s->width += glyph->pixel_width;
/* Adjust base line for subscript/superscript text. */
s->ybase += voffset;
/* The case that face->gc == 0 is handled when drawing the glyph
string by calling prepare_face_for_display. */
eassert (s->face);
return glyph - s->row->glyphs[s->area];
}
static struct font_metrics *
get_per_char_metric (struct font *font, XChar2b *char2b)
{
static struct font_metrics metrics;
unsigned code;
if (! font)
return NULL;
code = (XCHAR2B_BYTE1 (char2b) << 8) | XCHAR2B_BYTE2 (char2b);
if (code == FONT_INVALID_CODE)
return NULL;
font->driver->text_extents (font, &code, 1, &metrics);
return &metrics;
}
/* A subroutine that computes "normal" values of ASCENT and DESCENT
for FONT. Values are taken from font-global ones, except for fonts
that claim preposterously large values, but whose glyphs actually
have reasonable dimensions. C is the character to use for metrics
if the font-global values are too large; if C is negative, the
function selects a default character. */
static void
normal_char_ascent_descent (struct font *font, int c, int *ascent, int *descent)
{
*ascent = FONT_BASE (font);
*descent = FONT_DESCENT (font);
if (FONT_TOO_HIGH (font))
{
XChar2b char2b;
/* Get metrics of C, defaulting to a reasonably sized ASCII
character. */
if (get_char_glyph_code (c >= 0 ? c : '{', font, &char2b))
{
struct font_metrics *pcm = get_per_char_metric (font, &char2b);
if (!(pcm->width == 0 && pcm->rbearing == 0 && pcm->lbearing == 0))
{
/* We add 1 pixel to character dimensions as heuristics
that produces nicer display, e.g. when the face has
the box attribute. */
*ascent = pcm->ascent + 1;
*descent = pcm->descent + 1;
}
}
}
}
/* A subroutine that computes a reasonable "normal character height"
for fonts that claim preposterously large vertical dimensions, but
whose glyphs are actually reasonably sized. C is the character
whose metrics to use for those fonts, or -1 for default
character. */
static int
normal_char_height (struct font *font, int c)
{
int ascent, descent;
normal_char_ascent_descent (font, c, &ascent, &descent);
return ascent + descent;
}
/* EXPORT for RIF:
Set *LEFT and *RIGHT to the left and right overhang of GLYPH on
frame F. Overhangs of glyphs other than type CHAR_GLYPH are
assumed to be zero. */
void
x_get_glyph_overhangs (struct glyph *glyph, struct frame *f, int *left, int *right)
{
*left = *right = 0;
if (glyph->type == CHAR_GLYPH)
{
XChar2b char2b;
struct face *face = get_glyph_face_and_encoding (f, glyph, &char2b);
if (face->font)
{
struct font_metrics *pcm = get_per_char_metric (face->font, &char2b);
if (pcm)
{
if (pcm->rbearing > pcm->width)
*right = pcm->rbearing - pcm->width;
if (pcm->lbearing < 0)
*left = -pcm->lbearing;
}
}
}
else if (glyph->type == COMPOSITE_GLYPH)
{
if (! glyph->u.cmp.automatic)
{
struct composition *cmp = composition_table[glyph->u.cmp.id];
if (cmp->rbearing > cmp->pixel_width)
*right = cmp->rbearing - cmp->pixel_width;
if (cmp->lbearing < 0)
*left = - cmp->lbearing;
}
else
{
Lisp_Object gstring = composition_gstring_from_id (glyph->u.cmp.id);
struct font_metrics metrics;
composition_gstring_width (gstring, glyph->slice.cmp.from,
glyph->slice.cmp.to + 1, &metrics);
if (metrics.rbearing > metrics.width)
*right = metrics.rbearing - metrics.width;
if (metrics.lbearing < 0)
*left = - metrics.lbearing;
}
}
}
/* Return the index of the first glyph preceding glyph string S that
is overwritten by S because of S's left overhang. Value is -1
if no glyphs are overwritten. */
static int
left_overwritten (struct glyph_string *s)
{
int k;
if (s->left_overhang)
{
int x = 0, i;
struct glyph *glyphs = s->row->glyphs[s->area];
int first = s->first_glyph - glyphs;
for (i = first - 1; i >= 0 && x > -s->left_overhang; --i)
x -= glyphs[i].pixel_width;
k = i + 1;
}
else
k = -1;
return k;
}
/* Return the index of the first glyph preceding glyph string S that
is overwriting S because of its right overhang. Value is -1 if no
glyph in front of S overwrites S. */
static int
left_overwriting (struct glyph_string *s)
{
int i, k, x;
struct glyph *glyphs = s->row->glyphs[s->area];
int first = s->first_glyph - glyphs;
k = -1;
x = 0;
for (i = first - 1; i >= 0; --i)
{
int left, right;
x_get_glyph_overhangs (glyphs + i, s->f, &left, &right);
if (x + right > 0)
k = i;
x -= glyphs[i].pixel_width;
}
return k;
}
/* Return the index of the last glyph following glyph string S that is
overwritten by S because of S's right overhang. Value is -1 if
no such glyph is found. */
static int
right_overwritten (struct glyph_string *s)
{
int k = -1;
if (s->right_overhang)
{
int x = 0, i;
struct glyph *glyphs = s->row->glyphs[s->area];
int first = (s->first_glyph - glyphs
+ (s->first_glyph->type == COMPOSITE_GLYPH ? 1 : s->nchars));
int end = s->row->used[s->area];
for (i = first; i < end && s->right_overhang > x; ++i)
x += glyphs[i].pixel_width;
k = i;
}
return k;
}
/* Return the index of the last glyph following glyph string S that
overwrites S because of its left overhang. Value is negative
if no such glyph is found. */
static int
right_overwriting (struct glyph_string *s)
{
int i, k, x;
int end = s->row->used[s->area];
struct glyph *glyphs = s->row->glyphs[s->area];
int first = (s->first_glyph - glyphs
+ (s->first_glyph->type == COMPOSITE_GLYPH ? 1 : s->nchars));
k = -1;
x = 0;
for (i = first; i < end; ++i)
{
int left, right;
x_get_glyph_overhangs (glyphs + i, s->f, &left, &right);
if (x - left < 0)
k = i;
x += glyphs[i].pixel_width;
}
return k;
}
/* Set background width of glyph string S. START is the index of the
first glyph following S. LAST_X is the right-most x-position + 1
in the drawing area. */
static void
set_glyph_string_background_width (struct glyph_string *s, int start, int last_x)
{
/* If the face of this glyph string has to be drawn to the end of
the drawing area, set S->extends_to_end_of_line_p. */
if (start == s->row->used[s->area]
&& ((s->row->fill_line_p
&& (s->hl == DRAW_NORMAL_TEXT
|| s->hl == DRAW_IMAGE_RAISED
|| s->hl == DRAW_IMAGE_SUNKEN))
|| s->hl == DRAW_MOUSE_FACE))
s->extends_to_end_of_line_p = true;
/* If S extends its face to the end of the line, set its
background_width to the distance to the right edge of the drawing
area. */
if (s->extends_to_end_of_line_p)
s->background_width = last_x - s->x + 1;
else
s->background_width = s->width;
}
/* Compute overhangs and x-positions for glyph string S and its
predecessors, or successors. X is the starting x-position for S.
BACKWARD_P means process predecessors. */
static void
compute_overhangs_and_x (struct glyph_string *s, int x, bool backward_p)
{
if (backward_p)
{
while (s)
{
if (FRAME_RIF (s->f)->compute_glyph_string_overhangs)
FRAME_RIF (s->f)->compute_glyph_string_overhangs (s);
x -= s->width;
s->x = x;
s = s->prev;
}
}
else
{
while (s)
{
if (FRAME_RIF (s->f)->compute_glyph_string_overhangs)
FRAME_RIF (s->f)->compute_glyph_string_overhangs (s);
s->x = x;
x += s->width;
s = s->next;
}
}
}
/* The following macros are only called from draw_glyphs below.
They reference the following parameters of that function directly:
`w', `row', `area', and `overlap_p'
as well as the following local variables:
`s', `f', and `hdc' (in W32) */
#ifdef HAVE_NTGUI
/* On W32, silently add local `hdc' variable to argument list of
init_glyph_string. */
#define INIT_GLYPH_STRING(s, char2b, w, row, area, start, hl) \
init_glyph_string (s, hdc, char2b, w, row, area, start, hl)
#else
#define INIT_GLYPH_STRING(s, char2b, w, row, area, start, hl) \
init_glyph_string (s, char2b, w, row, area, start, hl)
#endif
/* Add a glyph string for a stretch glyph to the list of strings
between HEAD and TAIL. START is the index of the stretch glyph in
row area AREA of glyph row ROW. END is the index of the last glyph
in that glyph row area. X is the current output position assigned
to the new glyph string constructed. HL overrides that face of the
glyph; e.g. it is DRAW_CURSOR if a cursor has to be drawn. LAST_X
is the right-most x-position of the drawing area. */
/* SunOS 4 bundled cc, barfed on continuations in the arg lists here
and below -- keep them on one line. */
#define BUILD_STRETCH_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
s = alloca (sizeof *s); \
INIT_GLYPH_STRING (s, NULL, w, row, area, START, HL); \
START = fill_stretch_glyph_string (s, START, END); \
append_glyph_string (&HEAD, &TAIL, s); \
s->x = (X); \
} \
while (false)
/* Add a glyph string for an image glyph to the list of strings
between HEAD and TAIL. START is the index of the image glyph in
row area AREA of glyph row ROW. END is the index of the last glyph
in that glyph row area. X is the current output position assigned
to the new glyph string constructed. HL overrides that face of the
glyph; e.g. it is DRAW_CURSOR if a cursor has to be drawn. LAST_X
is the right-most x-position of the drawing area. */
#define BUILD_IMAGE_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
s = alloca (sizeof *s); \
INIT_GLYPH_STRING (s, NULL, w, row, area, START, HL); \
fill_image_glyph_string (s); \
append_glyph_string (&HEAD, &TAIL, s); \
++START; \
s->x = (X); \
} \
while (false)
#ifndef HAVE_XWIDGETS
# define BUILD_XWIDGET_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
eassume (false)
#else
# define BUILD_XWIDGET_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
s = alloca (sizeof *s); \
INIT_GLYPH_STRING (s, NULL, w, row, area, START, HL); \
fill_xwidget_glyph_string (s); \
append_glyph_string (&(HEAD), &(TAIL), s); \
++(START); \
s->x = (X); \
} \
while (false)
#endif
/* Add a glyph string for a sequence of character glyphs to the list
of strings between HEAD and TAIL. START is the index of the first
glyph in row area AREA of glyph row ROW that is part of the new
glyph string. END is the index of the last glyph in that glyph row
area. X is the current output position assigned to the new glyph
string constructed. HL overrides that face of the glyph; e.g. it
is DRAW_CURSOR if a cursor has to be drawn. LAST_X is the
right-most x-position of the drawing area. */
#define BUILD_CHAR_GLYPH_STRINGS(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
int face_id; \
XChar2b *char2b; \
\
face_id = (row)->glyphs[area][START].face_id; \
\
s = alloca (sizeof *s); \
SAFE_NALLOCA (char2b, 1, (END) - (START)); \
INIT_GLYPH_STRING (s, char2b, w, row, area, START, HL); \
append_glyph_string (&HEAD, &TAIL, s); \
s->x = (X); \
START = fill_glyph_string (s, face_id, START, END, overlaps); \
} \
while (false)
/* Add a glyph string for a composite sequence to the list of strings
between HEAD and TAIL. START is the index of the first glyph in
row area AREA of glyph row ROW that is part of the new glyph
string. END is the index of the last glyph in that glyph row area.
X is the current output position assigned to the new glyph string
constructed. HL overrides that face of the glyph; e.g. it is
DRAW_CURSOR if a cursor has to be drawn. LAST_X is the right-most
x-position of the drawing area. */
#define BUILD_COMPOSITE_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do { \
int face_id = (row)->glyphs[area][START].face_id; \
struct face *base_face = FACE_FROM_ID (f, face_id); \
ptrdiff_t cmp_id = (row)->glyphs[area][START].u.cmp.id; \
struct composition *cmp = composition_table[cmp_id]; \
XChar2b *char2b; \
struct glyph_string *first_s = NULL; \
int n; \
\
SAFE_NALLOCA (char2b, 1, cmp->glyph_len); \
\
/* Make glyph_strings for each glyph sequence that is drawable by \
the same face, and append them to HEAD/TAIL. */ \
for (n = 0; n < cmp->glyph_len;) \
{ \
s = alloca (sizeof *s); \
INIT_GLYPH_STRING (s, char2b, w, row, area, START, HL); \
append_glyph_string (&(HEAD), &(TAIL), s); \
s->cmp = cmp; \
s->cmp_from = n; \
s->x = (X); \
if (n == 0) \
first_s = s; \
n = fill_composite_glyph_string (s, base_face, overlaps); \
} \
\
++START; \
s = first_s; \
} while (false)
/* Add a glyph string for a glyph-string sequence to the list of strings
between HEAD and TAIL. */
#define BUILD_GSTRING_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do { \
int face_id; \
XChar2b *char2b; \
Lisp_Object gstring; \
\
face_id = (row)->glyphs[area][START].face_id; \
gstring = (composition_gstring_from_id \
((row)->glyphs[area][START].u.cmp.id)); \
s = alloca (sizeof *s); \
SAFE_NALLOCA (char2b, 1, LGSTRING_GLYPH_LEN (gstring)); \
INIT_GLYPH_STRING (s, char2b, w, row, area, START, HL); \
append_glyph_string (&(HEAD), &(TAIL), s); \
s->x = (X); \
START = fill_gstring_glyph_string (s, face_id, START, END, overlaps); \
} while (false)
/* Add a glyph string for a sequence of glyphless character's glyphs
to the list of strings between HEAD and TAIL. The meanings of
arguments are the same as those of BUILD_CHAR_GLYPH_STRINGS. */
#define BUILD_GLYPHLESS_GLYPH_STRING(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
int face_id; \
\
face_id = (row)->glyphs[area][START].face_id; \
\
s = alloca (sizeof *s); \
INIT_GLYPH_STRING (s, NULL, w, row, area, START, HL); \
append_glyph_string (&HEAD, &TAIL, s); \
s->x = (X); \
START = fill_glyphless_glyph_string (s, face_id, START, END, \
overlaps); \
} \
while (false)
/* Build a list of glyph strings between HEAD and TAIL for the glyphs
of AREA of glyph row ROW on window W between indices START and END.
HL overrides the face for drawing glyph strings, e.g. it is
DRAW_CURSOR to draw a cursor. X and LAST_X are start and end
x-positions of the drawing area.
This is an ugly monster macro construct because we must use alloca
to allocate glyph strings (because draw_glyphs can be called
asynchronously). */
#define BUILD_GLYPH_STRINGS_1(START, END, HEAD, TAIL, HL, X, LAST_X) \
do \
{ \
HEAD = TAIL = NULL; \
while (START < END) \
{ \
struct glyph *first_glyph = (row)->glyphs[area] + START; \
switch (first_glyph->type) \
{ \
case CHAR_GLYPH: \
BUILD_CHAR_GLYPH_STRINGS (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break; \
\
case COMPOSITE_GLYPH: \
if (first_glyph->u.cmp.automatic) \
BUILD_GSTRING_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
else \
BUILD_COMPOSITE_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break; \
\
case STRETCH_GLYPH: \
BUILD_STRETCH_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break; \
\
case IMAGE_GLYPH: \
BUILD_IMAGE_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break;
#define BUILD_GLYPH_STRINGS_XW(START, END, HEAD, TAIL, HL, X, LAST_X) \
case XWIDGET_GLYPH: \
BUILD_XWIDGET_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break;
#define BUILD_GLYPH_STRINGS_2(START, END, HEAD, TAIL, HL, X, LAST_X) \
case GLYPHLESS_GLYPH: \
BUILD_GLYPHLESS_GLYPH_STRING (START, END, HEAD, TAIL, \
HL, X, LAST_X); \
break; \
\
default: \
emacs_abort (); \
} \
\
if (s) \
{ \
set_glyph_string_background_width (s, START, LAST_X); \
(X) += s->width; \
} \
} \
} while (false)
#define BUILD_GLYPH_STRINGS(START, END, HEAD, TAIL, HL, X, LAST_X) \
BUILD_GLYPH_STRINGS_1(START, END, HEAD, TAIL, HL, X, LAST_X) \
BUILD_GLYPH_STRINGS_XW(START, END, HEAD, TAIL, HL, X, LAST_X) \
BUILD_GLYPH_STRINGS_2(START, END, HEAD, TAIL, HL, X, LAST_X)
/* Draw glyphs between START and END in AREA of ROW on window W,
starting at x-position X. X is relative to AREA in W. HL is a
face-override with the following meaning:
DRAW_NORMAL_TEXT draw normally
DRAW_CURSOR draw in cursor face
DRAW_MOUSE_FACE draw in mouse face.
DRAW_INVERSE_VIDEO draw in mode line face
DRAW_IMAGE_SUNKEN draw an image with a sunken relief around it
DRAW_IMAGE_RAISED draw an image with a raised relief around it
If OVERLAPS is non-zero, draw only the foreground of characters and
clip to the physical height of ROW. Non-zero value also defines
the overlapping part to be drawn:
OVERLAPS_PRED overlap with preceding rows
OVERLAPS_SUCC overlap with succeeding rows
OVERLAPS_BOTH overlap with both preceding/succeeding rows
OVERLAPS_ERASED_CURSOR overlap with erased cursor area
Value is the x-position reached, relative to AREA of W. */
static int
draw_glyphs (struct window *w, int x, struct glyph_row *row,
enum glyph_row_area area, ptrdiff_t start, ptrdiff_t end,
enum draw_glyphs_face hl, int overlaps)
{
struct glyph_string *head, *tail;
struct glyph_string *s;
struct glyph_string *clip_head = NULL, *clip_tail = NULL;
int i, j, x_reached, last_x, area_left = 0;
struct frame *f = XFRAME (WINDOW_FRAME (w));
DECLARE_HDC (hdc);
ALLOCATE_HDC (hdc, f);
/* Let's rather be paranoid than getting a SEGV. */
end = min (end, row->used[area]);
start = clip_to_bounds (0, start, end);
/* Translate X to frame coordinates. Set last_x to the right
end of the drawing area. */
if (row->full_width_p)
{
/* X is relative to the left edge of W, without scroll bars
or fringes. */
area_left = WINDOW_LEFT_EDGE_X (w);
last_x = (WINDOW_LEFT_EDGE_X (w) + WINDOW_PIXEL_WIDTH (w)
- (row->mode_line_p ? WINDOW_RIGHT_DIVIDER_WIDTH (w) : 0));
}
else
{
area_left = window_box_left (w, area);
last_x = area_left + window_box_width (w, area);
}
x += area_left;
/* Build a doubly-linked list of glyph_string structures between
head and tail from what we have to draw. Note that the macro
BUILD_GLYPH_STRINGS will modify its start parameter. That's
the reason we use a separate variable `i'. */
i = start;
USE_SAFE_ALLOCA;
BUILD_GLYPH_STRINGS (i, end, head, tail, hl, x, last_x);
if (tail)
x_reached = tail->x + tail->background_width;
else
x_reached = x;
/* If there are any glyphs with lbearing < 0 or rbearing > width in
the row, redraw some glyphs in front or following the glyph
strings built above. */
if (head && !overlaps && row->contains_overlapping_glyphs_p)
{
struct glyph_string *h, *t;
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
int mouse_beg_col UNINIT, mouse_end_col UNINIT;
bool check_mouse_face = false;
int dummy_x = 0;
/* If mouse highlighting is on, we may need to draw adjacent
glyphs using mouse-face highlighting. */
if (area == TEXT_AREA && row->mouse_face_p
&& hlinfo->mouse_face_beg_row >= 0
&& hlinfo->mouse_face_end_row >= 0)
{
ptrdiff_t row_vpos = MATRIX_ROW_VPOS (row, w->current_matrix);
if (row_vpos >= hlinfo->mouse_face_beg_row
&& row_vpos <= hlinfo->mouse_face_end_row)
{
check_mouse_face = true;
mouse_beg_col = (row_vpos == hlinfo->mouse_face_beg_row)
? hlinfo->mouse_face_beg_col : 0;
mouse_end_col = (row_vpos == hlinfo->mouse_face_end_row)
? hlinfo->mouse_face_end_col
: row->used[TEXT_AREA];
}
}
/* Compute overhangs for all glyph strings. */
if (FRAME_RIF (f)->compute_glyph_string_overhangs)
for (s = head; s; s = s->next)
FRAME_RIF (f)->compute_glyph_string_overhangs (s);
/* Prepend glyph strings for glyphs in front of the first glyph
string that are overwritten because of the first glyph
string's left overhang. The background of all strings
prepended must be drawn because the first glyph string
draws over it. */
i = left_overwritten (head);
if (i >= 0)
{
enum draw_glyphs_face overlap_hl;
/* If this row contains mouse highlighting, attempt to draw
the overlapped glyphs with the correct highlight. This
code fails if the overlap encompasses more than one glyph
and mouse-highlight spans only some of these glyphs.
However, making it work perfectly involves a lot more
code, and I don't know if the pathological case occurs in
practice, so we'll stick to this for now. --- cyd */
if (check_mouse_face
&& mouse_beg_col < start && mouse_end_col > i)
overlap_hl = DRAW_MOUSE_FACE;
else
overlap_hl = DRAW_NORMAL_TEXT;
if (hl != overlap_hl)
clip_head = head;
j = i;
BUILD_GLYPH_STRINGS (j, start, h, t,
overlap_hl, dummy_x, last_x);
start = i;
compute_overhangs_and_x (t, head->x, true);
prepend_glyph_string_lists (&head, &tail, h, t);
if (clip_head == NULL)
clip_head = head;
}
/* Prepend glyph strings for glyphs in front of the first glyph
string that overwrite that glyph string because of their
right overhang. For these strings, only the foreground must
be drawn, because it draws over the glyph string at `head'.
The background must not be drawn because this would overwrite
right overhangs of preceding glyphs for which no glyph
strings exist. */
i = left_overwriting (head);
if (i >= 0)
{
enum draw_glyphs_face overlap_hl;
if (check_mouse_face
&& mouse_beg_col < start && mouse_end_col > i)
overlap_hl = DRAW_MOUSE_FACE;
else
overlap_hl = DRAW_NORMAL_TEXT;
if (hl == overlap_hl || clip_head == NULL)
clip_head = head;
BUILD_GLYPH_STRINGS (i, start, h, t,
overlap_hl, dummy_x, last_x);
for (s = h; s; s = s->next)
s->background_filled_p = true;
compute_overhangs_and_x (t, head->x, true);
prepend_glyph_string_lists (&head, &tail, h, t);
}
/* Append glyphs strings for glyphs following the last glyph
string tail that are overwritten by tail. The background of
these strings has to be drawn because tail's foreground draws
over it. */
i = right_overwritten (tail);
if (i >= 0)
{
enum draw_glyphs_face overlap_hl;
if (check_mouse_face
&& mouse_beg_col < i && mouse_end_col > end)
overlap_hl = DRAW_MOUSE_FACE;
else
overlap_hl = DRAW_NORMAL_TEXT;
if (hl != overlap_hl)
clip_tail = tail;
BUILD_GLYPH_STRINGS (end, i, h, t,
overlap_hl, x, last_x);
/* Because BUILD_GLYPH_STRINGS updates the first argument,
we don't have `end = i;' here. */
compute_overhangs_and_x (h, tail->x + tail->width, false);
append_glyph_string_lists (&head, &tail, h, t);
if (clip_tail == NULL)
clip_tail = tail;
}
/* Append glyph strings for glyphs following the last glyph
string tail that overwrite tail. The foreground of such
glyphs has to be drawn because it writes into the background
of tail. The background must not be drawn because it could
paint over the foreground of following glyphs. */
i = right_overwriting (tail);
if (i >= 0)
{
enum draw_glyphs_face overlap_hl;
if (check_mouse_face
&& mouse_beg_col < i && mouse_end_col > end)
overlap_hl = DRAW_MOUSE_FACE;
else
overlap_hl = DRAW_NORMAL_TEXT;
if (hl == overlap_hl || clip_tail == NULL)
clip_tail = tail;
i++; /* We must include the Ith glyph. */
BUILD_GLYPH_STRINGS (end, i, h, t,
overlap_hl, x, last_x);
for (s = h; s; s = s->next)
s->background_filled_p = true;
compute_overhangs_and_x (h, tail->x + tail->width, false);
append_glyph_string_lists (&head, &tail, h, t);
}
if (clip_head || clip_tail)
for (s = head; s; s = s->next)
{
s->clip_head = clip_head;
s->clip_tail = clip_tail;
}
}
/* Draw all strings. */
for (s = head; s; s = s->next)
FRAME_RIF (f)->draw_glyph_string (s);
#ifndef HAVE_NS
/* When focus a sole frame and move horizontally, this clears on_p
causing a failure to erase prev cursor position. */
if (area == TEXT_AREA
&& !row->full_width_p
/* When drawing overlapping rows, only the glyph strings'
foreground is drawn, which doesn't erase a cursor
completely. */
&& !overlaps)
{
int x0 = clip_head ? clip_head->x : (head ? head->x : x);
int x1 = (clip_tail ? clip_tail->x + clip_tail->background_width
: (tail ? tail->x + tail->background_width : x));
x0 -= area_left;
x1 -= area_left;
notice_overwritten_cursor (w, TEXT_AREA, x0, x1,
row->y, MATRIX_ROW_BOTTOM_Y (row));
}
#endif
/* Value is the x-position up to which drawn, relative to AREA of W.
This doesn't include parts drawn because of overhangs. */
if (row->full_width_p)
x_reached = FRAME_TO_WINDOW_PIXEL_X (w, x_reached);
else
x_reached -= area_left;
RELEASE_HDC (hdc, f);
SAFE_FREE ();
return x_reached;
}
/* Expand row matrix if too narrow. Don't expand if area
is not present. */
#define IT_EXPAND_MATRIX_WIDTH(it, area) \
{ \
if (!it->f->fonts_changed \
&& (it->glyph_row->glyphs[area] \
< it->glyph_row->glyphs[area + 1])) \
{ \
it->w->ncols_scale_factor++; \
it->f->fonts_changed = true; \
} \
}
/* Store one glyph for IT->char_to_display in IT->glyph_row.
Called from x_produce_glyphs when IT->glyph_row is non-null. */
static void
append_glyph (struct it *it)
{
struct glyph *glyph;
enum glyph_row_area area = it->area;
eassert (it->glyph_row);
eassert (it->char_to_display != '\n' && it->char_to_display != '\t');
glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (glyph < it->glyph_row->glyphs[area + 1])
{
/* If the glyph row is reversed, we need to prepend the glyph
rather than append it. */
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
struct glyph *g;
/* Make room for the additional glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[area];
}
glyph->charpos = CHARPOS (it->position);
glyph->object = it->object;
if (it->pixel_width > 0)
{
eassert (it->pixel_width <= SHRT_MAX);
glyph->pixel_width = it->pixel_width;
glyph->padding_p = false;
}
else
{
/* Assure at least 1-pixel width. Otherwise, cursor can't
be displayed correctly. */
glyph->pixel_width = 1;
glyph->padding_p = true;
}
glyph->ascent = it->ascent;
glyph->descent = it->descent;
glyph->voffset = it->voffset;
glyph->type = CHAR_GLYPH;
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = (it->phys_ascent > it->ascent
|| it->phys_descent > it->descent);
glyph->glyph_not_available_p = it->glyph_not_available_p;
glyph->face_id = it->face_id;
glyph->u.ch = it->char_to_display;
glyph->slice.img = null_glyph_slice;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
else
{
glyph->resolved_level = 0;
glyph->bidi_type = UNKNOWN_BT;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
/* Store one glyph for the composition IT->cmp_it.id in
IT->glyph_row. Called from x_produce_glyphs when IT->glyph_row is
non-null. */
static void
append_composite_glyph (struct it *it)
{
struct glyph *glyph;
enum glyph_row_area area = it->area;
eassert (it->glyph_row);
glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (glyph < it->glyph_row->glyphs[area + 1])
{
/* If the glyph row is reversed, we need to prepend the glyph
rather than append it. */
if (it->glyph_row->reversed_p && it->area == TEXT_AREA)
{
struct glyph *g;
/* Make room for the new glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[it->area];
}
glyph->charpos = it->cmp_it.charpos;
glyph->object = it->object;
eassert (it->pixel_width <= SHRT_MAX);
glyph->pixel_width = it->pixel_width;
glyph->ascent = it->ascent;
glyph->descent = it->descent;
glyph->voffset = it->voffset;
glyph->type = COMPOSITE_GLYPH;
if (it->cmp_it.ch < 0)
{
glyph->u.cmp.automatic = false;
glyph->u.cmp.id = it->cmp_it.id;
glyph->slice.cmp.from = glyph->slice.cmp.to = 0;
}
else
{
glyph->u.cmp.automatic = true;
glyph->u.cmp.id = it->cmp_it.id;
glyph->slice.cmp.from = it->cmp_it.from;
glyph->slice.cmp.to = it->cmp_it.to - 1;
}
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = (it->phys_ascent > it->ascent
|| it->phys_descent > it->descent);
glyph->padding_p = false;
glyph->glyph_not_available_p = false;
glyph->face_id = it->face_id;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
/* Change IT->ascent and IT->height according to the setting of
IT->voffset. */
static void
take_vertical_position_into_account (struct it *it)
{
if (it->voffset)
{
if (it->voffset < 0)
/* Increase the ascent so that we can display the text higher
in the line. */
it->ascent -= it->voffset;
else
/* Increase the descent so that we can display the text lower
in the line. */
it->descent += it->voffset;
}
}
/* Produce glyphs/get display metrics for the image IT is loaded with.
See the description of struct display_iterator in dispextern.h for
an overview of struct display_iterator. */
static void
produce_image_glyph (struct it *it)
{
struct image *img;
struct face *face;
int glyph_ascent, crop;
struct glyph_slice slice;
eassert (it->what == IT_IMAGE);
face = FACE_FROM_ID (it->f, it->face_id);
/* Make sure X resources of the face is loaded. */
prepare_face_for_display (it->f, face);
if (it->image_id < 0)
{
/* Fringe bitmap. */
it->ascent = it->phys_ascent = 0;
it->descent = it->phys_descent = 0;
it->pixel_width = 0;
it->nglyphs = 0;
return;
}
img = IMAGE_FROM_ID (it->f, it->image_id);
/* Make sure X resources of the image is loaded. */
prepare_image_for_display (it->f, img);
slice.x = slice.y = 0;
slice.width = img->width;
slice.height = img->height;
if (INTEGERP (it->slice.x))
slice.x = XINT (it->slice.x);
else if (FLOATP (it->slice.x))
slice.x = XFLOAT_DATA (it->slice.x) * img->width;
if (INTEGERP (it->slice.y))
slice.y = XINT (it->slice.y);
else if (FLOATP (it->slice.y))
slice.y = XFLOAT_DATA (it->slice.y) * img->height;
if (INTEGERP (it->slice.width))
slice.width = XINT (it->slice.width);
else if (FLOATP (it->slice.width))
slice.width = XFLOAT_DATA (it->slice.width) * img->width;
if (INTEGERP (it->slice.height))
slice.height = XINT (it->slice.height);
else if (FLOATP (it->slice.height))
slice.height = XFLOAT_DATA (it->slice.height) * img->height;
if (slice.x >= img->width)
slice.x = img->width;
if (slice.y >= img->height)
slice.y = img->height;
if (slice.x + slice.width >= img->width)
slice.width = img->width - slice.x;
if (slice.y + slice.height > img->height)
slice.height = img->height - slice.y;
if (slice.width == 0 || slice.height == 0)
return;
it->ascent = it->phys_ascent = glyph_ascent = image_ascent (img, face, &slice);
it->descent = slice.height - glyph_ascent;
if (slice.y == 0)
it->descent += img->vmargin;
if (slice.y + slice.height == img->height)
it->descent += img->vmargin;
it->phys_descent = it->descent;
it->pixel_width = slice.width;
if (slice.x == 0)
it->pixel_width += img->hmargin;
if (slice.x + slice.width == img->width)
it->pixel_width += img->hmargin;
/* It's quite possible for images to have an ascent greater than
their height, so don't get confused in that case. */
if (it->descent < 0)
it->descent = 0;
it->nglyphs = 1;
if (face->box != FACE_NO_BOX)
{
if (face->box_line_width > 0)
{
if (slice.y == 0)
it->ascent += face->box_line_width;
if (slice.y + slice.height == img->height)
it->descent += face->box_line_width;
}
if (it->start_of_box_run_p && slice.x == 0)
it->pixel_width += eabs (face->box_line_width);
if (it->end_of_box_run_p && slice.x + slice.width == img->width)
it->pixel_width += eabs (face->box_line_width);
}
take_vertical_position_into_account (it);
/* Automatically crop wide image glyphs at right edge so we can
draw the cursor on same display row. */
if ((crop = it->pixel_width - (it->last_visible_x - it->current_x), crop > 0)
&& (it->hpos == 0 || it->pixel_width > it->last_visible_x / 4))
{
it->pixel_width -= crop;
slice.width -= crop;
}
if (it->glyph_row)
{
struct glyph *glyph;
enum glyph_row_area area = it->area;
glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (it->glyph_row->reversed_p)
{
struct glyph *g;
/* Make room for the new glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[it->area];
}
if (glyph < it->glyph_row->glyphs[area + 1])
{
glyph->charpos = CHARPOS (it->position);
glyph->object = it->object;
glyph->pixel_width = clip_to_bounds (-1, it->pixel_width, SHRT_MAX);
glyph->ascent = glyph_ascent;
glyph->descent = it->descent;
glyph->voffset = it->voffset;
glyph->type = IMAGE_GLYPH;
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = false;
glyph->padding_p = false;
glyph->glyph_not_available_p = false;
glyph->face_id = it->face_id;
glyph->u.img_id = img->id;
glyph->slice.img = slice;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
}
static void
produce_xwidget_glyph (struct it *it)
{
#ifdef HAVE_XWIDGETS
struct xwidget *xw;
int glyph_ascent, crop;
eassert (it->what == IT_XWIDGET);
struct face *face = FACE_FROM_ID (it->f, it->face_id);
/* Make sure X resources of the face is loaded. */
prepare_face_for_display (it->f, face);
xw = it->xwidget;
it->ascent = it->phys_ascent = glyph_ascent = xw->height/2;
it->descent = xw->height/2;
it->phys_descent = it->descent;
it->pixel_width = xw->width;
/* It's quite possible for images to have an ascent greater than
their height, so don't get confused in that case. */
if (it->descent < 0)
it->descent = 0;
it->nglyphs = 1;
if (face->box != FACE_NO_BOX)
{
if (face->box_line_width > 0)
{
it->ascent += face->box_line_width;
it->descent += face->box_line_width;
}
if (it->start_of_box_run_p)
it->pixel_width += eabs (face->box_line_width);
it->pixel_width += eabs (face->box_line_width);
}
take_vertical_position_into_account (it);
/* Automatically crop wide image glyphs at right edge so we can
draw the cursor on same display row. */
crop = it->pixel_width - (it->last_visible_x - it->current_x);
if (crop > 0 && (it->hpos == 0 || it->pixel_width > it->last_visible_x / 4))
it->pixel_width -= crop;
if (it->glyph_row)
{
enum glyph_row_area area = it->area;
struct glyph *glyph
= it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (it->glyph_row->reversed_p)
{
struct glyph *g;
/* Make room for the new glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[it->area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[it->area];
}
if (glyph < it->glyph_row->glyphs[area + 1])
{
glyph->charpos = CHARPOS (it->position);
glyph->object = it->object;
glyph->pixel_width = clip_to_bounds (-1, it->pixel_width, SHRT_MAX);
glyph->ascent = glyph_ascent;
glyph->descent = it->descent;
glyph->voffset = it->voffset;
glyph->type = XWIDGET_GLYPH;
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = 0;
glyph->padding_p = 0;
glyph->glyph_not_available_p = 0;
glyph->face_id = it->face_id;
glyph->u.xwidget = it->xwidget;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
#endif
}
/* Append a stretch glyph to IT->glyph_row. OBJECT is the source
of the glyph, WIDTH and HEIGHT are the width and height of the
stretch. ASCENT is the ascent of the glyph (0 <= ASCENT <= HEIGHT). */
static void
append_stretch_glyph (struct it *it, Lisp_Object object,
int width, int height, int ascent)
{
struct glyph *glyph;
enum glyph_row_area area = it->area;
eassert (ascent >= 0 && ascent <= height);
glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (glyph < it->glyph_row->glyphs[area + 1])
{
/* If the glyph row is reversed, we need to prepend the glyph
rather than append it. */
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
struct glyph *g;
/* Make room for the additional glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[area];
/* Decrease the width of the first glyph of the row that
begins before first_visible_x (e.g., due to hscroll).
This is so the overall width of the row becomes smaller
by the scroll amount, and the stretch glyph appended by
extend_face_to_end_of_line will be wider, to shift the
row glyphs to the right. (In L2R rows, the corresponding
left-shift effect is accomplished by setting row->x to a
negative value, which won't work with R2L rows.)
This must leave us with a positive value of WIDTH, since
otherwise the call to move_it_in_display_line_to at the
beginning of display_line would have got past the entire
first glyph, and then it->current_x would have been
greater or equal to it->first_visible_x. */
if (it->current_x < it->first_visible_x)
width -= it->first_visible_x - it->current_x;
eassert (width > 0);
}
glyph->charpos = CHARPOS (it->position);
glyph->object = object;
/* FIXME: It would be better to use TYPE_MAX here, but
__typeof__ is not portable enough... */
glyph->pixel_width = clip_to_bounds (-1, width, SHRT_MAX);
glyph->ascent = ascent;
glyph->descent = height - ascent;
glyph->voffset = it->voffset;
glyph->type = STRETCH_GLYPH;
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = false;
glyph->padding_p = false;
glyph->glyph_not_available_p = false;
glyph->face_id = it->face_id;
glyph->u.stretch.ascent = ascent;
glyph->u.stretch.height = height;
glyph->slice.img = null_glyph_slice;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
else
{
glyph->resolved_level = 0;
glyph->bidi_type = UNKNOWN_BT;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
#endif /* HAVE_WINDOW_SYSTEM */
/* Produce a stretch glyph for iterator IT. IT->object is the value
of the glyph property displayed. The value must be a list
`(space KEYWORD VALUE ...)' with the following KEYWORD/VALUE pairs
being recognized:
1. `:width WIDTH' specifies that the space should be WIDTH *
canonical char width wide. WIDTH may be an integer or floating
point number.
2. `:relative-width FACTOR' specifies that the width of the stretch
should be computed from the width of the first character having the
`glyph' property, and should be FACTOR times that width.
3. `:align-to HPOS' specifies that the space should be wide enough
to reach HPOS, a value in canonical character units.
Exactly one of the above pairs must be present.
4. `:height HEIGHT' specifies that the height of the stretch produced
should be HEIGHT, measured in canonical character units.
5. `:relative-height FACTOR' specifies that the height of the
stretch should be FACTOR times the height of the characters having
the glyph property.
Either none or exactly one of 4 or 5 must be present.
6. `:ascent ASCENT' specifies that ASCENT percent of the height
of the stretch should be used for the ascent of the stretch.
ASCENT must be in the range 0 <= ASCENT <= 100. */
void
produce_stretch_glyph (struct it *it)
{
/* (space :width WIDTH :height HEIGHT ...) */
Lisp_Object prop, plist;
int width = 0, height = 0, align_to = -1;
bool zero_width_ok_p = false;
double tem;
struct font *font = NULL;
#ifdef HAVE_WINDOW_SYSTEM
int ascent = 0;
bool zero_height_ok_p = false;
if (FRAME_WINDOW_P (it->f))
{
struct face *face = FACE_FROM_ID (it->f, it->face_id);
font = face->font ? face->font : FRAME_FONT (it->f);
prepare_face_for_display (it->f, face);
}
#endif
/* List should start with `space'. */
eassert (CONSP (it->object) && EQ (XCAR (it->object), Qspace));
plist = XCDR (it->object);
/* Compute the width of the stretch. */
if ((prop = Fplist_get (plist, QCwidth), !NILP (prop))
&& calc_pixel_width_or_height (&tem, it, prop, font, true, 0))
{
/* Absolute width `:width WIDTH' specified and valid. */
zero_width_ok_p = true;
width = (int)tem;
}
else if (prop = Fplist_get (plist, QCrelative_width), NUMVAL (prop) > 0)
{
/* Relative width `:relative-width FACTOR' specified and valid.
Compute the width of the characters having the `glyph'
property. */
struct it it2;
unsigned char *p = BYTE_POS_ADDR (IT_BYTEPOS (*it));
it2 = *it;
if (it->multibyte_p)
it2.c = it2.char_to_display = STRING_CHAR_AND_LENGTH (p, it2.len);
else
{
it2.c = it2.char_to_display = *p, it2.len = 1;
if (! ASCII_CHAR_P (it2.c))
it2.char_to_display = BYTE8_TO_CHAR (it2.c);
}
it2.glyph_row = NULL;
it2.what = IT_CHARACTER;
PRODUCE_GLYPHS (&it2);
width = NUMVAL (prop) * it2.pixel_width;
}
else if ((prop = Fplist_get (plist, QCalign_to), !NILP (prop))
&& calc_pixel_width_or_height (&tem, it, prop, font, true,
&align_to))
{
if (it->glyph_row == NULL || !it->glyph_row->mode_line_p)
align_to = (align_to < 0
? 0
: align_to - window_box_left_offset (it->w, TEXT_AREA));
else if (align_to < 0)
align_to = window_box_left_offset (it->w, TEXT_AREA);
width = max (0, (int)tem + align_to - it->current_x);
zero_width_ok_p = true;
}
else
/* Nothing specified -> width defaults to canonical char width. */
width = FRAME_COLUMN_WIDTH (it->f);
if (width <= 0 && (width < 0 || !zero_width_ok_p))
width = 1;
#ifdef HAVE_WINDOW_SYSTEM
/* Compute height. */
if (FRAME_WINDOW_P (it->f))
{
int default_height = normal_char_height (font, ' ');
if ((prop = Fplist_get (plist, QCheight), !NILP (prop))
&& calc_pixel_width_or_height (&tem, it, prop, font, false, 0))
{
height = (int)tem;
zero_height_ok_p = true;
}
else if (prop = Fplist_get (plist, QCrelative_height),
NUMVAL (prop) > 0)
height = default_height * NUMVAL (prop);
else
height = default_height;
if (height <= 0 && (height < 0 || !zero_height_ok_p))
height = 1;
/* Compute percentage of height used for ascent. If
`:ascent ASCENT' is present and valid, use that. Otherwise,
derive the ascent from the font in use. */
if (prop = Fplist_get (plist, QCascent),
NUMVAL (prop) > 0 && NUMVAL (prop) <= 100)
ascent = height * NUMVAL (prop) / 100.0;
else if (!NILP (prop)
&& calc_pixel_width_or_height (&tem, it, prop, font, false, 0))
ascent = min (max (0, (int)tem), height);
else
ascent = (height * FONT_BASE (font)) / FONT_HEIGHT (font);
}
else
#endif /* HAVE_WINDOW_SYSTEM */
height = 1;
if (width > 0 && it->line_wrap != TRUNCATE
&& it->current_x + width > it->last_visible_x)
{
width = it->last_visible_x - it->current_x;
#ifdef HAVE_WINDOW_SYSTEM
/* Subtract one more pixel from the stretch width, but only on
GUI frames, since on a TTY each glyph is one "pixel" wide. */
width -= FRAME_WINDOW_P (it->f);
#endif
}
if (width > 0 && height > 0 && it->glyph_row)
{
Lisp_Object o_object = it->object;
Lisp_Object object = it->stack[it->sp - 1].string;
int n = width;
if (!STRINGP (object))
object = it->w->contents;
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (it->f))
append_stretch_glyph (it, object, width, height, ascent);
else
#endif
{
it->object = object;
it->char_to_display = ' ';
it->pixel_width = it->len = 1;
while (n--)
tty_append_glyph (it);
it->object = o_object;
}
}
it->pixel_width = width;
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (it->f))
{
it->ascent = it->phys_ascent = ascent;
it->descent = it->phys_descent = height - it->ascent;
it->nglyphs = width > 0 && height > 0;
take_vertical_position_into_account (it);
}
else
#endif
it->nglyphs = width;
}
/* Get information about special display element WHAT in an
environment described by IT. WHAT is one of IT_TRUNCATION or
IT_CONTINUATION. Maybe produce glyphs for WHAT if IT has a
non-null glyph_row member. This function ensures that fields like
face_id, c, len of IT are left untouched. */
static void
produce_special_glyphs (struct it *it, enum display_element_type what)
{
struct it temp_it;
Lisp_Object gc;
GLYPH glyph;
temp_it = *it;
temp_it.object = Qnil;
memset (&temp_it.current, 0, sizeof temp_it.current);
if (what == IT_CONTINUATION)
{
/* Continuation glyph. For R2L lines, we mirror it by hand. */
if (it->bidi_it.paragraph_dir == R2L)
SET_GLYPH_FROM_CHAR (glyph, '/');
else
SET_GLYPH_FROM_CHAR (glyph, '\\');
if (it->dp
&& (gc = DISP_CONTINUE_GLYPH (it->dp), GLYPH_CODE_P (gc)))
{
/* FIXME: Should we mirror GC for R2L lines? */
SET_GLYPH_FROM_GLYPH_CODE (glyph, gc);
spec_glyph_lookup_face (XWINDOW (it->window), &glyph);
}
}
else if (what == IT_TRUNCATION)
{
/* Truncation glyph. */
SET_GLYPH_FROM_CHAR (glyph, '$');
if (it->dp
&& (gc = DISP_TRUNC_GLYPH (it->dp), GLYPH_CODE_P (gc)))
{
/* FIXME: Should we mirror GC for R2L lines? */
SET_GLYPH_FROM_GLYPH_CODE (glyph, gc);
spec_glyph_lookup_face (XWINDOW (it->window), &glyph);
}
}
else
emacs_abort ();
#ifdef HAVE_WINDOW_SYSTEM
/* On a GUI frame, when the right fringe (left fringe for R2L rows)
is turned off, we precede the truncation/continuation glyphs by a
stretch glyph whose width is computed such that these special
glyphs are aligned at the window margin, even when very different
fonts are used in different glyph rows. */
if (FRAME_WINDOW_P (temp_it.f)
/* init_iterator calls this with it->glyph_row == NULL, and it
wants only the pixel width of the truncation/continuation
glyphs. */
&& temp_it.glyph_row
/* insert_left_trunc_glyphs calls us at the beginning of the
row, and it has its own calculation of the stretch glyph
width. */
&& temp_it.glyph_row->used[TEXT_AREA] > 0
&& (temp_it.glyph_row->reversed_p
? WINDOW_LEFT_FRINGE_WIDTH (temp_it.w)
: WINDOW_RIGHT_FRINGE_WIDTH (temp_it.w)) == 0)
{
int stretch_width = temp_it.last_visible_x - temp_it.current_x;
if (stretch_width > 0)
{
struct face *face = FACE_FROM_ID (temp_it.f, temp_it.face_id);
struct font *font =
face->font ? face->font : FRAME_FONT (temp_it.f);
int stretch_ascent =
(((temp_it.ascent + temp_it.descent)
* FONT_BASE (font)) / FONT_HEIGHT (font));
append_stretch_glyph (&temp_it, Qnil, stretch_width,
temp_it.ascent + temp_it.descent,
stretch_ascent);
}
}
#endif
temp_it.dp = NULL;
temp_it.what = IT_CHARACTER;
temp_it.c = temp_it.char_to_display = GLYPH_CHAR (glyph);
temp_it.face_id = GLYPH_FACE (glyph);
temp_it.len = CHAR_BYTES (temp_it.c);
PRODUCE_GLYPHS (&temp_it);
it->pixel_width = temp_it.pixel_width;
it->nglyphs = temp_it.nglyphs;
}
#ifdef HAVE_WINDOW_SYSTEM
/* Calculate line-height and line-spacing properties.
An integer value specifies explicit pixel value.
A float value specifies relative value to current face height.
A cons (float . face-name) specifies relative value to
height of specified face font.
Returns height in pixels, or nil. */
static Lisp_Object
calc_line_height_property (struct it *it, Lisp_Object val, struct font *font,
int boff, bool override)
{
Lisp_Object face_name = Qnil;
int ascent, descent, height;
if (NILP (val) || INTEGERP (val) || (override && EQ (val, Qt)))
return val;
if (CONSP (val))
{
face_name = XCAR (val);
val = XCDR (val);
if (!NUMBERP (val))
val = make_number (1);
if (NILP (face_name))
{
height = it->ascent + it->descent;
goto scale;
}
}
if (NILP (face_name))
{
font = FRAME_FONT (it->f);
boff = FRAME_BASELINE_OFFSET (it->f);
}
else if (EQ (face_name, Qt))
{
override = false;
}
else
{
int face_id;
struct face *face;
face_id = lookup_named_face (it->f, face_name, false);
face = FACE_FROM_ID_OR_NULL (it->f, face_id);
if (face == NULL || ((font = face->font) == NULL))
return make_number (-1);
boff = font->baseline_offset;
if (font->vertical_centering)
boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
}
normal_char_ascent_descent (font, -1, &ascent, &descent);
if (override)
{
it->override_ascent = ascent;
it->override_descent = descent;
it->override_boff = boff;
}
height = ascent + descent;
scale:
if (FLOATP (val))
height = (int)(XFLOAT_DATA (val) * height);
else if (INTEGERP (val))
height *= XINT (val);
return make_number (height);
}
/* Append a glyph for a glyphless character to IT->glyph_row. FACE_ID
is a face ID to be used for the glyph. FOR_NO_FONT is true if
and only if this is for a character for which no font was found.
If the display method (it->glyphless_method) is
GLYPHLESS_DISPLAY_ACRONYM or GLYPHLESS_DISPLAY_HEX_CODE, LEN is a
length of the acronym or the hexadecimal string, UPPER_XOFF and
UPPER_YOFF are pixel offsets for the upper part of the string,
LOWER_XOFF and LOWER_YOFF are for the lower part.
For the other display methods, LEN through LOWER_YOFF are zero. */
static void
append_glyphless_glyph (struct it *it, int face_id, bool for_no_font, int len,
short upper_xoff, short upper_yoff,
short lower_xoff, short lower_yoff)
{
struct glyph *glyph;
enum glyph_row_area area = it->area;
glyph = it->glyph_row->glyphs[area] + it->glyph_row->used[area];
if (glyph < it->glyph_row->glyphs[area + 1])
{
/* If the glyph row is reversed, we need to prepend the glyph
rather than append it. */
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
struct glyph *g;
/* Make room for the additional glyph. */
for (g = glyph - 1; g >= it->glyph_row->glyphs[area]; g--)
g[1] = *g;
glyph = it->glyph_row->glyphs[area];
}
glyph->charpos = CHARPOS (it->position);
glyph->object = it->object;
eassert (it->pixel_width <= SHRT_MAX);
glyph->pixel_width = it->pixel_width;
glyph->ascent = it->ascent;
glyph->descent = it->descent;
glyph->voffset = it->voffset;
glyph->type = GLYPHLESS_GLYPH;
glyph->u.glyphless.method = it->glyphless_method;
glyph->u.glyphless.for_no_font = for_no_font;
glyph->u.glyphless.len = len;
glyph->u.glyphless.ch = it->c;
glyph->slice.glyphless.upper_xoff = upper_xoff;
glyph->slice.glyphless.upper_yoff = upper_yoff;
glyph->slice.glyphless.lower_xoff = lower_xoff;
glyph->slice.glyphless.lower_yoff = lower_yoff;
glyph->avoid_cursor_p = it->avoid_cursor_p;
glyph->multibyte_p = it->multibyte_p;
if (it->glyph_row->reversed_p && area == TEXT_AREA)
{
/* In R2L rows, the left and the right box edges need to be
drawn in reverse direction. */
glyph->right_box_line_p = it->start_of_box_run_p;
glyph->left_box_line_p = it->end_of_box_run_p;
}
else
{
glyph->left_box_line_p = it->start_of_box_run_p;
glyph->right_box_line_p = it->end_of_box_run_p;
}
glyph->overlaps_vertically_p = (it->phys_ascent > it->ascent
|| it->phys_descent > it->descent);
glyph->padding_p = false;
glyph->glyph_not_available_p = false;
glyph->face_id = face_id;
glyph->font_type = FONT_TYPE_UNKNOWN;
if (it->bidi_p)
{
glyph->resolved_level = it->bidi_it.resolved_level;
eassert ((it->bidi_it.type & 7) == it->bidi_it.type);
glyph->bidi_type = it->bidi_it.type;
}
++it->glyph_row->used[area];
}
else
IT_EXPAND_MATRIX_WIDTH (it, area);
}
/* Produce a glyph for a glyphless character for iterator IT.
IT->glyphless_method specifies which method to use for displaying
the character. See the description of enum
glyphless_display_method in dispextern.h for the detail.
FOR_NO_FONT is true if and only if this is for a character for
which no font was found. ACRONYM, if non-nil, is an acronym string
for the character. */
static void
produce_glyphless_glyph (struct it *it, bool for_no_font, Lisp_Object acronym)
{
int face_id;
struct face *face;
struct font *font;
int base_width, base_height, width, height;
short upper_xoff, upper_yoff, lower_xoff, lower_yoff;
int len;
/* Get the metrics of the base font. We always refer to the current
ASCII face. */
face = FACE_FROM_ID (it->f, it->face_id)->ascii_face;
font = face->font ? face->font : FRAME_FONT (it->f);
normal_char_ascent_descent (font, -1, &it->ascent, &it->descent);
it->ascent += font->baseline_offset;
it->descent -= font->baseline_offset;
base_height = it->ascent + it->descent;
base_width = font->average_width;
face_id = merge_glyphless_glyph_face (it);
if (it->glyphless_method == GLYPHLESS_DISPLAY_THIN_SPACE)
{
it->pixel_width = THIN_SPACE_WIDTH;
len = 0;
upper_xoff = upper_yoff = lower_xoff = lower_yoff = 0;
}
else if (it->glyphless_method == GLYPHLESS_DISPLAY_EMPTY_BOX)
{
width = CHARACTER_WIDTH (it->c);
if (width == 0)
width = 1;
else if (width > 4)
width = 4;
it->pixel_width = base_width * width;
len = 0;
upper_xoff = upper_yoff = lower_xoff = lower_yoff = 0;
}
else
{
char buf[7];
const char *str;
unsigned int code[6];
int upper_len;
int ascent, descent;
struct font_metrics metrics_upper, metrics_lower;
face = FACE_FROM_ID (it->f, face_id);
font = face->font ? face->font : FRAME_FONT (it->f);
prepare_face_for_display (it->f, face);
if (it->glyphless_method == GLYPHLESS_DISPLAY_ACRONYM)
{
if (! STRINGP (acronym) && CHAR_TABLE_P (Vglyphless_char_display))
acronym = CHAR_TABLE_REF (Vglyphless_char_display, it->c);
if (CONSP (acronym))
acronym = XCAR (acronym);
str = STRINGP (acronym) ? SSDATA (acronym) : "";
}
else
{
eassert (it->glyphless_method == GLYPHLESS_DISPLAY_HEX_CODE);
sprintf (buf, "%0*X", it->c < 0x10000 ? 4 : 6, it->c + 0u);
str = buf;
}
for (len = 0; str[len] && ASCII_CHAR_P (str[len]) && len < 6; len++)
code[len] = font->driver->encode_char (font, str[len]);
upper_len = (len + 1) / 2;
font->driver->text_extents (font, code, upper_len,
&metrics_upper);
font->driver->text_extents (font, code + upper_len, len - upper_len,
&metrics_lower);
/* +4 is for vertical bars of a box plus 1-pixel spaces at both side. */
width = max (metrics_upper.width, metrics_lower.width) + 4;
upper_xoff = upper_yoff = 2; /* the typical case */
if (base_width >= width)
{
/* Align the upper to the left, the lower to the right. */
it->pixel_width = base_width;
lower_xoff = base_width - 2 - metrics_lower.width;
}
else
{
/* Center the shorter one. */
it->pixel_width = width;
if (metrics_upper.width >= metrics_lower.width)
lower_xoff = (width - metrics_lower.width) / 2;
else
{
/* FIXME: This code doesn't look right. It formerly was
missing the "lower_xoff = 0;", which couldn't have
been right since it left lower_xoff uninitialized. */
lower_xoff = 0;
upper_xoff = (width - metrics_upper.width) / 2;
}
}
/* +5 is for horizontal bars of a box plus 1-pixel spaces at
top, bottom, and between upper and lower strings. */
height = (metrics_upper.ascent + metrics_upper.descent
+ metrics_lower.ascent + metrics_lower.descent) + 5;
/* Center vertically.
H:base_height, D:base_descent
h:height, ld:lower_descent, la:lower_ascent, ud:upper_descent
ascent = - (D - H/2 - h/2 + 1); "+ 1" for rounding up
descent = D - H/2 + h/2;
lower_yoff = descent - 2 - ld;
upper_yoff = lower_yoff - la - 1 - ud; */
ascent = - (it->descent - (base_height + height + 1) / 2);
descent = it->descent - (base_height - height) / 2;
lower_yoff = descent - 2 - metrics_lower.descent;
upper_yoff = (lower_yoff - metrics_lower.ascent - 1
- metrics_upper.descent);
/* Don't make the height shorter than the base height. */
if (height > base_height)
{
it->ascent = ascent;
it->descent = descent;
}
}
it->phys_ascent = it->ascent;
it->phys_descent = it->descent;
if (it->glyph_row)
append_glyphless_glyph (it, face_id, for_no_font, len,
upper_xoff, upper_yoff,
lower_xoff, lower_yoff);
it->nglyphs = 1;
take_vertical_position_into_account (it);
}
/* RIF:
Produce glyphs/get display metrics for the display element IT is
loaded with. See the description of struct it in dispextern.h
for an overview of struct it. */
void
x_produce_glyphs (struct it *it)
{
int extra_line_spacing = it->extra_line_spacing;
it->glyph_not_available_p = false;
if (it->what == IT_CHARACTER)
{
XChar2b char2b;
struct face *face = FACE_FROM_ID (it->f, it->face_id);
struct font *font = face->font;
struct font_metrics *pcm = NULL;
int boff; /* Baseline offset. */
if (font == NULL)
{
/* When no suitable font is found, display this character by
the method specified in the first extra slot of
Vglyphless_char_display. */
Lisp_Object acronym = lookup_glyphless_char_display (-1, it);
eassert (it->what == IT_GLYPHLESS);
produce_glyphless_glyph (it, true,
STRINGP (acronym) ? acronym : Qnil);
goto done;
}
boff = font->baseline_offset;
if (font->vertical_centering)
boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
if (it->char_to_display != '\n' && it->char_to_display != '\t')
{
it->nglyphs = 1;
if (it->override_ascent >= 0)
{
it->ascent = it->override_ascent;
it->descent = it->override_descent;
boff = it->override_boff;
}
else
{
it->ascent = FONT_BASE (font) + boff;
it->descent = FONT_DESCENT (font) - boff;
}
if (get_char_glyph_code (it->char_to_display, font, &char2b))
{
pcm = get_per_char_metric (font, &char2b);
if (pcm->width == 0
&& pcm->rbearing == 0 && pcm->lbearing == 0)
pcm = NULL;
}
if (pcm)
{
it->phys_ascent = pcm->ascent + boff;
it->phys_descent = pcm->descent - boff;
it->pixel_width = pcm->width;
/* Don't use font-global values for ascent and descent
if they result in an exceedingly large line height. */
if (it->override_ascent < 0)
{
if (FONT_TOO_HIGH (font))
{
it->ascent = it->phys_ascent;
it->descent = it->phys_descent;
/* These limitations are enforced by an
assertion near the end of this function. */
if (it->ascent < 0)
it->ascent = 0;
if (it->descent < 0)
it->descent = 0;
}
}
}
else
{
it->glyph_not_available_p = true;
it->phys_ascent = it->ascent;
it->phys_descent = it->descent;
it->pixel_width = font->space_width;
}
if (it->constrain_row_ascent_descent_p)
{
if (it->descent > it->max_descent)
{
it->ascent += it->descent - it->max_descent;
it->descent = it->max_descent;
}
if (it->ascent > it->max_ascent)
{
it->descent = min (it->max_descent, it->descent + it->ascent - it->max_ascent);
it->ascent = it->max_ascent;
}
it->phys_ascent = min (it->phys_ascent, it->ascent);
it->phys_descent = min (it->phys_descent, it->descent);
extra_line_spacing = 0;
}
/* If this is a space inside a region of text with
`space-width' property, change its width. */
bool stretched_p
= it->char_to_display == ' ' && !NILP (it->space_width);
if (stretched_p)
it->pixel_width *= XFLOATINT (it->space_width);
/* If face has a box, add the box thickness to the character
height. If character has a box line to the left and/or
right, add the box line width to the character's width. */
if (face->box != FACE_NO_BOX)
{
int thick = face->box_line_width;
if (thick > 0)
{
it->ascent += thick;
it->descent += thick;
}
else
thick = -thick;
if (it->start_of_box_run_p)
it->pixel_width += thick;
if (it->end_of_box_run_p)
it->pixel_width += thick;
}
/* If face has an overline, add the height of the overline
(1 pixel) and a 1 pixel margin to the character height. */
if (face->overline_p)
it->ascent += overline_margin;
if (it->constrain_row_ascent_descent_p)
{
if (it->ascent > it->max_ascent)
it->ascent = it->max_ascent;
if (it->descent > it->max_descent)
it->descent = it->max_descent;
}
take_vertical_position_into_account (it);
/* If we have to actually produce glyphs, do it. */
if (it->glyph_row)
{
if (stretched_p)
{
/* Translate a space with a `space-width' property
into a stretch glyph. */
int ascent = (((it->ascent + it->descent) * FONT_BASE (font))
/ FONT_HEIGHT (font));
append_stretch_glyph (it, it->object, it->pixel_width,
it->ascent + it->descent, ascent);
}
else
append_glyph (it);
/* If characters with lbearing or rbearing are displayed
in this line, record that fact in a flag of the
glyph row. This is used to optimize X output code. */
if (pcm && (pcm->lbearing < 0 || pcm->rbearing > pcm->width))
it->glyph_row->contains_overlapping_glyphs_p = true;
}
if (! stretched_p && it->pixel_width == 0)
/* We assure that all visible glyphs have at least 1-pixel
width. */
it->pixel_width = 1;
}
else if (it->char_to_display == '\n')
{
/* A newline has no width, but we need the height of the
line. But if previous part of the line sets a height,
don't increase that height. */
Lisp_Object height;
Lisp_Object total_height = Qnil;
it->override_ascent = -1;
it->pixel_width = 0;
it->nglyphs = 0;
height = get_it_property (it, Qline_height);
/* Split (line-height total-height) list. */
if (CONSP (height)
&& CONSP (XCDR (height))
&& NILP (XCDR (XCDR (height))))
{
total_height = XCAR (XCDR (height));
height = XCAR (height);
}
height = calc_line_height_property (it, height, font, boff, true);
if (it->override_ascent >= 0)
{
it->ascent = it->override_ascent;
it->descent = it->override_descent;
boff = it->override_boff;
}
else
{
if (FONT_TOO_HIGH (font))
{
it->ascent = font->pixel_size + boff - 1;
it->descent = -boff + 1;
if (it->descent < 0)
it->descent = 0;
}
else
{
it->ascent = FONT_BASE (font) + boff;
it->descent = FONT_DESCENT (font) - boff;
}
}
if (EQ (height, Qt))
{
if (it->descent > it->max_descent)
{
it->ascent += it->descent - it->max_descent;
it->descent = it->max_descent;
}
if (it->ascent > it->max_ascent)
{
it->descent = min (it->max_descent, it->descent + it->ascent - it->max_ascent);
it->ascent = it->max_ascent;
}
it->phys_ascent = min (it->phys_ascent, it->ascent);
it->phys_descent = min (it->phys_descent, it->descent);
it->constrain_row_ascent_descent_p = true;
extra_line_spacing = 0;
}
else
{
Lisp_Object spacing;
it->phys_ascent = it->ascent;
it->phys_descent = it->descent;
if ((it->max_ascent > 0 || it->max_descent > 0)
&& face->box != FACE_NO_BOX
&& face->box_line_width > 0)
{
it->ascent += face->box_line_width;
it->descent += face->box_line_width;
}
if (!NILP (height)
&& XINT (height) > it->ascent + it->descent)
it->ascent = XINT (height) - it->descent;
if (!NILP (total_height))
spacing = calc_line_height_property (it, total_height, font,
boff, false);
else
{
spacing = get_it_property (it, Qline_spacing);
spacing = calc_line_height_property (it, spacing, font,
boff, false);
}
if (INTEGERP (spacing))
{
extra_line_spacing = XINT (spacing);
if (!NILP (total_height))
extra_line_spacing -= (it->phys_ascent + it->phys_descent);
}
}
}
else /* i.e. (it->char_to_display == '\t') */
{
if (font->space_width > 0)
{
int tab_width = it->tab_width * font->space_width;
int x = it->current_x + it->continuation_lines_width;
int next_tab_x = ((1 + x + tab_width - 1) / tab_width) * tab_width;
/* If the distance from the current position to the next tab
stop is less than a space character width, use the
tab stop after that. */
if (next_tab_x - x < font->space_width)
next_tab_x += tab_width;
it->pixel_width = next_tab_x - x;
it->nglyphs = 1;
if (FONT_TOO_HIGH (font))
{
if (get_char_glyph_code (' ', font, &char2b))
{
pcm = get_per_char_metric (font, &char2b);
if (pcm->width == 0
&& pcm->rbearing == 0 && pcm->lbearing == 0)
pcm = NULL;
}
if (pcm)
{
it->ascent = pcm->ascent + boff;
it->descent = pcm->descent - boff;
}
else
{
it->ascent = font->pixel_size + boff - 1;
it->descent = -boff + 1;
}
if (it->ascent < 0)
it->ascent = 0;
if (it->descent < 0)
it->descent = 0;
}
else
{
it->ascent = FONT_BASE (font) + boff;
it->descent = FONT_DESCENT (font) - boff;
}
it->phys_ascent = it->ascent;
it->phys_descent = it->descent;
if (it->glyph_row)
{
append_stretch_glyph (it, it->object, it->pixel_width,
it->ascent + it->descent, it->ascent);
}
}
else
{
it->pixel_width = 0;
it->nglyphs = 1;
}
}
if (FONT_TOO_HIGH (font))
{
int font_ascent, font_descent;
/* For very large fonts, where we ignore the declared font
dimensions, and go by per-character metrics instead,
don't let the row ascent and descent values (and the row
height computed from them) be smaller than the "normal"
character metrics. This avoids unpleasant effects
whereby lines on display would change their height
depending on which characters are shown. */
normal_char_ascent_descent (font, -1, &font_ascent, &font_descent);
it->max_ascent = max (it->max_ascent, font_ascent);
it->max_descent = max (it->max_descent, font_descent);
}
}
else if (it->what == IT_COMPOSITION && it->cmp_it.ch < 0)
{
/* A static composition.
Note: A composition is represented as one glyph in the
glyph matrix. There are no padding glyphs.
Important note: pixel_width, ascent, and descent are the
values of what is drawn by draw_glyphs (i.e. the values of
the overall glyphs composed). */
struct face *face = FACE_FROM_ID (it->f, it->face_id);
int boff; /* baseline offset */
struct composition *cmp = composition_table[it->cmp_it.id];
int glyph_len = cmp->glyph_len;
struct font *font = face->font;
it->nglyphs = 1;
/* If we have not yet calculated pixel size data of glyphs of
the composition for the current face font, calculate them
now. Theoretically, we have to check all fonts for the
glyphs, but that requires much time and memory space. So,
here we check only the font of the first glyph. This may
lead to incorrect display, but it's very rare, and C-l
(recenter-top-bottom) can correct the display anyway. */
if (! cmp->font || cmp->font != font)
{
/* Ascent and descent of the font of the first character
of this composition (adjusted by baseline offset).
Ascent and descent of overall glyphs should not be less
than these, respectively. */
int font_ascent, font_descent, font_height;
/* Bounding box of the overall glyphs. */
int leftmost, rightmost, lowest, highest;
int lbearing, rbearing;
int i, width, ascent, descent;
int c;
XChar2b char2b;
struct font_metrics *pcm;
ptrdiff_t pos;
eassume (0 < glyph_len); /* See Bug#8512. */
do
c = COMPOSITION_GLYPH (cmp, glyph_len - 1);
while (c == '\t' && 0 < --glyph_len);
bool right_padded = glyph_len < cmp->glyph_len;
for (i = 0; i < glyph_len; i++)
{
c = COMPOSITION_GLYPH (cmp, i);
if (c != '\t')
break;
cmp->offsets[i * 2] = cmp->offsets[i * 2 + 1] = 0;
}
bool left_padded = i > 0;
pos = (STRINGP (it->string) ? IT_STRING_CHARPOS (*it)
: IT_CHARPOS (*it));
/* If no suitable font is found, use the default font. */
bool font_not_found_p = font == NULL;
if (font_not_found_p)
{
face = face->ascii_face;
font = face->font;
}
boff = font->baseline_offset;
if (font->vertical_centering)
boff = VCENTER_BASELINE_OFFSET (font, it->f) - boff;
normal_char_ascent_descent (font, -1, &font_ascent, &font_descent);
font_ascent += boff;
font_descent -= boff;
font_height = font_ascent + font_descent;
cmp->font = font;
pcm = NULL;
if (! font_not_found_p)
{
get_char_face_and_encoding (it->f, c, it->face_id,
&char2b, false);
pcm = get_per_char_metric (font, &char2b);
}
/* Initialize the bounding box. */
if (pcm)
{
width = cmp->glyph_len > 0 ? pcm->width : 0;
ascent = pcm->ascent;
descent = pcm->descent;
lbearing = pcm->lbearing;
rbearing = pcm->rbearing;
}
else
{
width = cmp->glyph_len > 0 ? font->space_width : 0;
ascent = FONT_BASE (font);
descent = FONT_DESCENT (font);
lbearing = 0;
rbearing = width;
}
rightmost = width;
leftmost = 0;
lowest = - descent + boff;
highest = ascent + boff;
if (! font_not_found_p
&& font->default_ascent
&& CHAR_TABLE_P (Vuse_default_ascent)
&& !NILP (Faref (Vuse_default_ascent,
make_number (it->char_to_display))))
highest = font->default_ascent + boff;
/* Draw the first glyph at the normal position. It may be
shifted to right later if some other glyphs are drawn
at the left. */
cmp->offsets[i * 2] = 0;
cmp->offsets[i * 2 + 1] = boff;
cmp->lbearing = lbearing;
cmp->rbearing = rbearing;
/* Set cmp->offsets for the remaining glyphs. */
for (i++; i < glyph_len; i++)
{
int left, right, btm, top;
int ch = COMPOSITION_GLYPH (cmp, i);
int face_id;
struct face *this_face;
if (ch == '\t')
ch = ' ';
face_id = FACE_FOR_CHAR (it->f, face, ch, pos, it->string);
this_face = FACE_FROM_ID (it->f, face_id);
font = this_face->font;
if (font == NULL)
pcm = NULL;
else
{
get_char_face_and_encoding (it->f, ch, face_id,
&char2b, false);
pcm = get_per_char_metric (font, &char2b);
}
if (! pcm)
cmp->offsets[i * 2] = cmp->offsets[i * 2 + 1] = 0;
else
{
width = pcm->width;
ascent = pcm->ascent;
descent = pcm->descent;
lbearing = pcm->lbearing;
rbearing = pcm->rbearing;
if (cmp->method != COMPOSITION_WITH_RULE_ALTCHARS)
{
/* Relative composition with or without
alternate chars. */
left = (leftmost + rightmost - width) / 2;
btm = - descent + boff;
if (font->relative_compose
&& (! CHAR_TABLE_P (Vignore_relative_composition)
|| NILP (Faref (Vignore_relative_composition,
make_number (ch)))))
{
if (- descent >= font->relative_compose)
/* One extra pixel between two glyphs. */
btm = highest + 1;
else if (ascent <= 0)
/* One extra pixel between two glyphs. */
btm = lowest - 1 - ascent - descent;
}
}
else
{
/* A composition rule is specified by an integer
value that encodes global and new reference
points (GREF and NREF). GREF and NREF are
specified by numbers as below:
0---1---2 -- ascent
| |
| |
| |
9--10--11 -- center
| |
---3---4---5--- baseline
| |
6---7---8 -- descent
*/
int rule = COMPOSITION_RULE (cmp, i);
int gref, nref, grefx, grefy, nrefx, nrefy, xoff, yoff;
COMPOSITION_DECODE_RULE (rule, gref, nref, xoff, yoff);
grefx = gref % 3, nrefx = nref % 3;
grefy = gref / 3, nrefy = nref / 3;
if (xoff)
xoff = font_height * (xoff - 128) / 256;
if (yoff)
yoff = font_height * (yoff - 128) / 256;
left = (leftmost
+ grefx * (rightmost - leftmost) / 2
- nrefx * width / 2
+ xoff);
btm = ((grefy == 0 ? highest
: grefy == 1 ? 0
: grefy == 2 ? lowest
: (highest + lowest) / 2)
- (nrefy == 0 ? ascent + descent
: nrefy == 1 ? descent - boff
: nrefy == 2 ? 0
: (ascent + descent) / 2)
+ yoff);
}
cmp->offsets[i * 2] = left;
cmp->offsets[i * 2 + 1] = btm + descent;
/* Update the bounding box of the overall glyphs. */
if (width > 0)
{
right = left + width;
if (left < leftmost)
leftmost = left;
if (right > rightmost)
rightmost = right;
}
top = btm + descent + ascent;
if (top > highest)
highest = top;
if (btm < lowest)
lowest = btm;
if (cmp->lbearing > left + lbearing)
cmp->lbearing = left + lbearing;
if (cmp->rbearing < left + rbearing)
cmp->rbearing = left + rbearing;
}
}
/* If there are glyphs whose x-offsets are negative,
shift all glyphs to the right and make all x-offsets
non-negative. */
if (leftmost < 0)
{
for (i = 0; i < cmp->glyph_len; i++)
cmp->offsets[i * 2] -= leftmost;
rightmost -= leftmost;
cmp->lbearing -= leftmost;
cmp->rbearing -= leftmost;
}
if (left_padded && cmp->lbearing < 0)
{
for (i = 0; i < cmp->glyph_len; i++)
cmp->offsets[i * 2] -= cmp->lbearing;
rightmost -= cmp->lbearing;
cmp->rbearing -= cmp->lbearing;
cmp->lbearing = 0;
}
if (right_padded && rightmost < cmp->rbearing)
{
rightmost = cmp->rbearing;
}
cmp->pixel_width = rightmost;
cmp->ascent = highest;
cmp->descent = - lowest;
if (cmp->ascent < font_ascent)
cmp->ascent = font_ascent;
if (cmp->descent < font_descent)
cmp->descent = font_descent;
}
if (it->glyph_row
&& (cmp->lbearing < 0
|| cmp->rbearing > cmp->pixel_width))
it->glyph_row->contains_overlapping_glyphs_p = true;
it->pixel_width = cmp->pixel_width;
it->ascent = it->phys_ascent = cmp->ascent;
it->descent = it->phys_descent = cmp->descent;
if (face->box != FACE_NO_BOX)
{
int thick = face->box_line_width;
if (thick > 0)
{
it->ascent += thick;
it->descent += thick;
}
else
thick = - thick;
if (it->start_of_box_run_p)
it->pixel_width += thick;
if (it->end_of_box_run_p)
it->pixel_width += thick;
}
/* If face has an overline, add the height of the overline
(1 pixel) and a 1 pixel margin to the character height. */
if (face->overline_p)
it->ascent += overline_margin;
take_vertical_position_into_account (it);
if (it->ascent < 0)
it->ascent = 0;
if (it->descent < 0)
it->descent = 0;
if (it->glyph_row && cmp->glyph_len > 0)
append_composite_glyph (it);
}
else if (it->what == IT_COMPOSITION)
{
/* A dynamic (automatic) composition. */
struct face *face = FACE_FROM_ID (it->f, it->face_id);
Lisp_Object gstring;
struct font_metrics metrics;
it->nglyphs = 1;
gstring = composition_gstring_from_id (it->cmp_it.id);
it->pixel_width
= composition_gstring_width (gstring, it->cmp_it.from, it->cmp_it.to,
&metrics);
if (it->glyph_row
&& (metrics.lbearing < 0 || metrics.rbearing > metrics.width))
it->glyph_row->contains_overlapping_glyphs_p = true;
it->ascent = it->phys_ascent = metrics.ascent;
it->descent = it->phys_descent = metrics.descent;
if (face->box != FACE_NO_BOX)
{
int thick = face->box_line_width;
if (thick > 0)
{
it->ascent += thick;
it->descent += thick;
}
else
thick = - thick;
if (it->start_of_box_run_p)
it->pixel_width += thick;
if (it->end_of_box_run_p)
it->pixel_width += thick;
}
/* If face has an overline, add the height of the overline
(1 pixel) and a 1 pixel margin to the character height. */
if (face->overline_p)
it->ascent += overline_margin;
take_vertical_position_into_account (it);
if (it->ascent < 0)
it->ascent = 0;
if (it->descent < 0)
it->descent = 0;
if (it->glyph_row)
append_composite_glyph (it);
}
else if (it->what == IT_GLYPHLESS)
produce_glyphless_glyph (it, false, Qnil);
else if (it->what == IT_IMAGE)
produce_image_glyph (it);
else if (it->what == IT_STRETCH)
produce_stretch_glyph (it);
else if (it->what == IT_XWIDGET)
produce_xwidget_glyph (it);
done:
/* Accumulate dimensions. Note: can't assume that it->descent > 0
because this isn't true for images with `:ascent 100'. */
eassert (it->ascent >= 0 && it->descent >= 0);
if (it->area == TEXT_AREA)
it->current_x += it->pixel_width;
if (extra_line_spacing > 0)
{
it->descent += extra_line_spacing;
if (extra_line_spacing > it->max_extra_line_spacing)
it->max_extra_line_spacing = extra_line_spacing;
}
it->max_ascent = max (it->max_ascent, it->ascent);
it->max_descent = max (it->max_descent, it->descent);
it->max_phys_ascent = max (it->max_phys_ascent, it->phys_ascent);
it->max_phys_descent = max (it->max_phys_descent, it->phys_descent);
}
/* EXPORT for RIF:
Output LEN glyphs starting at START at the nominal cursor position.
Advance the nominal cursor over the text. UPDATED_ROW is the glyph row
being updated, and UPDATED_AREA is the area of that row being updated. */
void
x_write_glyphs (struct window *w, struct glyph_row *updated_row,
struct glyph *start, enum glyph_row_area updated_area, int len)
{
int x, hpos, chpos = w->phys_cursor.hpos;
eassert (updated_row);
/* When the window is hscrolled, cursor hpos can legitimately be out
of bounds, but we draw the cursor at the corresponding window
margin in that case. */
if (!updated_row->reversed_p && chpos < 0)
chpos = 0;
if (updated_row->reversed_p && chpos >= updated_row->used[TEXT_AREA])
chpos = updated_row->used[TEXT_AREA] - 1;
block_input ();
/* Write glyphs. */
hpos = start - updated_row->glyphs[updated_area];
x = draw_glyphs (w, w->output_cursor.x,
updated_row, updated_area,
hpos, hpos + len,
DRAW_NORMAL_TEXT, 0);
/* Invalidate old phys cursor if the glyph at its hpos is redrawn. */
if (updated_area == TEXT_AREA
&& w->phys_cursor_on_p
&& w->phys_cursor.vpos == w->output_cursor.vpos
&& chpos >= hpos
&& chpos < hpos + len)
w->phys_cursor_on_p = false;
unblock_input ();
/* Advance the output cursor. */
w->output_cursor.hpos += len;
w->output_cursor.x = x;
}
/* EXPORT for RIF:
Insert LEN glyphs from START at the nominal cursor position. */
void
x_insert_glyphs (struct window *w, struct glyph_row *updated_row,
struct glyph *start, enum glyph_row_area updated_area, int len)
{
struct frame *f;
int line_height, shift_by_width, shifted_region_width;
struct glyph_row *row;
struct glyph *glyph;
int frame_x, frame_y;
ptrdiff_t hpos;
eassert (updated_row);
block_input ();
f = XFRAME (WINDOW_FRAME (w));
/* Get the height of the line we are in. */
row = updated_row;
line_height = row->height;
/* Get the width of the glyphs to insert. */
shift_by_width = 0;
for (glyph = start; glyph < start + len; ++glyph)
shift_by_width += glyph->pixel_width;
/* Get the width of the region to shift right. */
shifted_region_width = (window_box_width (w, updated_area)
- w->output_cursor.x
- shift_by_width);
/* Shift right. */
frame_x = window_box_left (w, updated_area) + w->output_cursor.x;
frame_y = WINDOW_TO_FRAME_PIXEL_Y (w, w->output_cursor.y);
FRAME_RIF (f)->shift_glyphs_for_insert (f, frame_x, frame_y, shifted_region_width,
line_height, shift_by_width);
/* Write the glyphs. */
hpos = start - row->glyphs[updated_area];
draw_glyphs (w, w->output_cursor.x, row, updated_area,
hpos, hpos + len,
DRAW_NORMAL_TEXT, 0);
/* Advance the output cursor. */
w->output_cursor.hpos += len;
w->output_cursor.x += shift_by_width;
unblock_input ();
}
/* EXPORT for RIF:
Erase the current text line from the nominal cursor position
(inclusive) to pixel column TO_X (exclusive). The idea is that
everything from TO_X onward is already erased.
TO_X is a pixel position relative to UPDATED_AREA of currently
updated window W. TO_X == -1 means clear to the end of this area. */
void
x_clear_end_of_line (struct window *w, struct glyph_row *updated_row,
enum glyph_row_area updated_area, int to_x)
{
struct frame *f;
int max_x, min_y, max_y;
int from_x, from_y, to_y;
eassert (updated_row);
f = XFRAME (w->frame);
if (updated_row->full_width_p)
max_x = (WINDOW_PIXEL_WIDTH (w)
- (updated_row->mode_line_p ? WINDOW_RIGHT_DIVIDER_WIDTH (w) : 0));
else
max_x = window_box_width (w, updated_area);
max_y = window_text_bottom_y (w);
/* TO_X == 0 means don't do anything. TO_X < 0 means clear to end
of window. For TO_X > 0, truncate to end of drawing area. */
if (to_x == 0)
return;
else if (to_x < 0)
to_x = max_x;
else
to_x = min (to_x, max_x);
to_y = min (max_y, w->output_cursor.y + updated_row->height);
/* Notice if the cursor will be cleared by this operation. */
if (!updated_row->full_width_p)
notice_overwritten_cursor (w, updated_area,
w->output_cursor.x, -1,
updated_row->y,
MATRIX_ROW_BOTTOM_Y (updated_row));
from_x = w->output_cursor.x;
/* Translate to frame coordinates. */
if (updated_row->full_width_p)
{
from_x = WINDOW_TO_FRAME_PIXEL_X (w, from_x);
to_x = WINDOW_TO_FRAME_PIXEL_X (w, to_x);
}
else
{
int area_left = window_box_left (w, updated_area);
from_x += area_left;
to_x += area_left;
}
min_y = WINDOW_HEADER_LINE_HEIGHT (w);
from_y = WINDOW_TO_FRAME_PIXEL_Y (w, max (min_y, w->output_cursor.y));
to_y = WINDOW_TO_FRAME_PIXEL_Y (w, to_y);
/* Prevent inadvertently clearing to end of the X window. */
if (to_x > from_x && to_y > from_y)
{
block_input ();
FRAME_RIF (f)->clear_frame_area (f, from_x, from_y,
to_x - from_x, to_y - from_y);
unblock_input ();
}
}
#endif /* HAVE_WINDOW_SYSTEM */
\f
/***********************************************************************
Cursor types
***********************************************************************/
/* Value is the internal representation of the specified cursor type
ARG. If type is BAR_CURSOR, return in *WIDTH the specified width
of the bar cursor. */
static enum text_cursor_kinds
get_specified_cursor_type (Lisp_Object arg, int *width)
{
enum text_cursor_kinds type;
if (NILP (arg))
return NO_CURSOR;
if (EQ (arg, Qbox))
return FILLED_BOX_CURSOR;
if (EQ (arg, Qhollow))
return HOLLOW_BOX_CURSOR;
if (EQ (arg, Qbar))
{
*width = 2;
return BAR_CURSOR;
}
if (CONSP (arg)
&& EQ (XCAR (arg), Qbar)
&& RANGED_INTEGERP (0, XCDR (arg), INT_MAX))
{
*width = XINT (XCDR (arg));
return BAR_CURSOR;
}
if (EQ (arg, Qhbar))
{
*width = 2;
return HBAR_CURSOR;
}
if (CONSP (arg)
&& EQ (XCAR (arg), Qhbar)
&& RANGED_INTEGERP (0, XCDR (arg), INT_MAX))
{
*width = XINT (XCDR (arg));
return HBAR_CURSOR;
}
/* Treat anything unknown as "hollow box cursor".
It was bad to signal an error; people have trouble fixing
.Xdefaults with Emacs, when it has something bad in it. */
type = HOLLOW_BOX_CURSOR;
return type;
}
/* Set the default cursor types for specified frame. */
void
set_frame_cursor_types (struct frame *f, Lisp_Object arg)
{
int width = 1;
Lisp_Object tem;
FRAME_DESIRED_CURSOR (f) = get_specified_cursor_type (arg, &width);
FRAME_CURSOR_WIDTH (f) = width;
/* By default, set up the blink-off state depending on the on-state. */
tem = Fassoc (arg, Vblink_cursor_alist);
if (!NILP (tem))
{
FRAME_BLINK_OFF_CURSOR (f)
= get_specified_cursor_type (XCDR (tem), &width);
FRAME_BLINK_OFF_CURSOR_WIDTH (f) = width;
}
else
FRAME_BLINK_OFF_CURSOR (f) = DEFAULT_CURSOR;
/* Make sure the cursor gets redrawn. */
f->cursor_type_changed = true;
}
#ifdef HAVE_WINDOW_SYSTEM
/* Return the cursor we want to be displayed in window W. Return
width of bar/hbar cursor through WIDTH arg. Return with
ACTIVE_CURSOR arg set to true if cursor in window W is `active'
(i.e. if the `system caret' should track this cursor).
In a mini-buffer window, we want the cursor only to appear if we
are reading input from this window. For the selected window, we
want the cursor type given by the frame parameter or buffer local
setting of cursor-type. If explicitly marked off, draw no cursor.
In all other cases, we want a hollow box cursor. */
static enum text_cursor_kinds
get_window_cursor_type (struct window *w, struct glyph *glyph, int *width,
bool *active_cursor)
{
struct frame *f = XFRAME (w->frame);
struct buffer *b = XBUFFER (w->contents);
int cursor_type = DEFAULT_CURSOR;
Lisp_Object alt_cursor;
bool non_selected = false;
*active_cursor = true;
/* Echo area */
if (cursor_in_echo_area
&& FRAME_HAS_MINIBUF_P (f)
&& EQ (FRAME_MINIBUF_WINDOW (f), echo_area_window))
{
if (w == XWINDOW (echo_area_window))
{
if (EQ (BVAR (b, cursor_type), Qt) || NILP (BVAR (b, cursor_type)))
{
*width = FRAME_CURSOR_WIDTH (f);
return FRAME_DESIRED_CURSOR (f);
}
else
return get_specified_cursor_type (BVAR (b, cursor_type), width);
}
*active_cursor = false;
non_selected = true;
}
/* Detect a nonselected window or nonselected frame. */
else if (w != XWINDOW (f->selected_window)
|| f != FRAME_DISPLAY_INFO (f)->x_highlight_frame)
{
*active_cursor = false;
if (MINI_WINDOW_P (w) && minibuf_level == 0)
return NO_CURSOR;
non_selected = true;
}
/* Never display a cursor in a window in which cursor-type is nil. */
if (NILP (BVAR (b, cursor_type)))
return NO_CURSOR;
/* Get the normal cursor type for this window. */
if (EQ (BVAR (b, cursor_type), Qt))
{
cursor_type = FRAME_DESIRED_CURSOR (f);
*width = FRAME_CURSOR_WIDTH (f);
}
else
cursor_type = get_specified_cursor_type (BVAR (b, cursor_type), width);
/* Use cursor-in-non-selected-windows instead
for non-selected window or frame. */
if (non_selected)
{
alt_cursor = BVAR (b, cursor_in_non_selected_windows);
if (!EQ (Qt, alt_cursor))
return get_specified_cursor_type (alt_cursor, width);
/* t means modify the normal cursor type. */
if (cursor_type == FILLED_BOX_CURSOR)
cursor_type = HOLLOW_BOX_CURSOR;
else if (cursor_type == BAR_CURSOR && *width > 1)
--*width;
return cursor_type;
}
/* Use normal cursor if not blinked off. */
if (!w->cursor_off_p)
{
if (glyph != NULL && glyph->type == XWIDGET_GLYPH)
return NO_CURSOR;
if (glyph != NULL && glyph->type == IMAGE_GLYPH)
{
if (cursor_type == FILLED_BOX_CURSOR)
{
/* Using a block cursor on large images can be very annoying.
So use a hollow cursor for "large" images.
If image is not transparent (no mask), also use hollow cursor. */
struct image *img = IMAGE_OPT_FROM_ID (f, glyph->u.img_id);
if (img != NULL && IMAGEP (img->spec))
{
/* Arbitrarily, interpret "Large" as >32x32 and >NxN
where N = size of default frame font size.
This should cover most of the "tiny" icons people may use. */
if (!img->mask
|| img->width > max (32, WINDOW_FRAME_COLUMN_WIDTH (w))
|| img->height > max (32, WINDOW_FRAME_LINE_HEIGHT (w)))
cursor_type = HOLLOW_BOX_CURSOR;
}
}
else if (cursor_type != NO_CURSOR)
{
/* Display current only supports BOX and HOLLOW cursors for images.
So for now, unconditionally use a HOLLOW cursor when cursor is
not a solid box cursor. */
cursor_type = HOLLOW_BOX_CURSOR;
}
}
return cursor_type;
}
/* Cursor is blinked off, so determine how to "toggle" it. */
/* First look for an entry matching the buffer's cursor-type in blink-cursor-alist. */
if ((alt_cursor = Fassoc (BVAR (b, cursor_type), Vblink_cursor_alist), !NILP (alt_cursor)))
return get_specified_cursor_type (XCDR (alt_cursor), width);
/* Then see if frame has specified a specific blink off cursor type. */
if (FRAME_BLINK_OFF_CURSOR (f) != DEFAULT_CURSOR)
{
*width = FRAME_BLINK_OFF_CURSOR_WIDTH (f);
return FRAME_BLINK_OFF_CURSOR (f);
}
#if false
/* Some people liked having a permanently visible blinking cursor,
while others had very strong opinions against it. So it was
decided to remove it. KFS 2003-09-03 */
/* Finally perform built-in cursor blinking:
filled box <-> hollow box
wide [h]bar <-> narrow [h]bar
narrow [h]bar <-> no cursor
other type <-> no cursor */
if (cursor_type == FILLED_BOX_CURSOR)
return HOLLOW_BOX_CURSOR;
if ((cursor_type == BAR_CURSOR || cursor_type == HBAR_CURSOR) && *width > 1)
{
*width = 1;
return cursor_type;
}
#endif
return NO_CURSOR;
}
/* Notice when the text cursor of window W has been completely
overwritten by a drawing operation that outputs glyphs in AREA
starting at X0 and ending at X1 in the line starting at Y0 and
ending at Y1. X coordinates are area-relative. X1 < 0 means all
the rest of the line after X0 has been written. Y coordinates
are window-relative. */
static void
notice_overwritten_cursor (struct window *w, enum glyph_row_area area,
int x0, int x1, int y0, int y1)
{
int cx0, cx1, cy0, cy1;
struct glyph_row *row;
if (!w->phys_cursor_on_p)
return;
if (area != TEXT_AREA)
return;
if (w->phys_cursor.vpos < 0
|| w->phys_cursor.vpos >= w->current_matrix->nrows
|| (row = w->current_matrix->rows + w->phys_cursor.vpos,
!(row->enabled_p && MATRIX_ROW_DISPLAYS_TEXT_P (row))))
return;
if (row->cursor_in_fringe_p)
{
row->cursor_in_fringe_p = false;
draw_fringe_bitmap (w, row, row->reversed_p);
w->phys_cursor_on_p = false;
return;
}
cx0 = w->phys_cursor.x;
cx1 = cx0 + w->phys_cursor_width;
if (x0 > cx0 || (x1 >= 0 && x1 < cx1))
return;
/* The cursor image will be completely removed from the
screen if the output area intersects the cursor area in
y-direction. When we draw in [y0 y1[, and some part of
the cursor is at y < y0, that part must have been drawn
before. When scrolling, the cursor is erased before
actually scrolling, so we don't come here. When not
scrolling, the rows above the old cursor row must have
changed, and in this case these rows must have written
over the cursor image.
Likewise if part of the cursor is below y1, with the
exception of the cursor being in the first blank row at
the buffer and window end because update_text_area
doesn't draw that row. (Except when it does, but
that's handled in update_text_area.) */
cy0 = w->phys_cursor.y;
cy1 = cy0 + w->phys_cursor_height;
if ((y0 < cy0 || y0 >= cy1) && (y1 <= cy0 || y1 >= cy1))
return;
w->phys_cursor_on_p = false;
}
#endif /* HAVE_WINDOW_SYSTEM */
\f
/************************************************************************
Mouse Face
************************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
/* EXPORT for RIF:
Fix the display of area AREA of overlapping row ROW in window W
with respect to the overlapping part OVERLAPS. */
void
x_fix_overlapping_area (struct window *w, struct glyph_row *row,
enum glyph_row_area area, int overlaps)
{
int i, x;
block_input ();
x = 0;
for (i = 0; i < row->used[area];)
{
if (row->glyphs[area][i].overlaps_vertically_p)
{
int start = i, start_x = x;
do
{
x += row->glyphs[area][i].pixel_width;
++i;
}
while (i < row->used[area]
&& row->glyphs[area][i].overlaps_vertically_p);
draw_glyphs (w, start_x, row, area,
start, i,
DRAW_NORMAL_TEXT, overlaps);
}
else
{
x += row->glyphs[area][i].pixel_width;
++i;
}
}
unblock_input ();
}
/* EXPORT:
Draw the cursor glyph of window W in glyph row ROW. See the
comment of draw_glyphs for the meaning of HL. */
void
draw_phys_cursor_glyph (struct window *w, struct glyph_row *row,
enum draw_glyphs_face hl)
{
/* If cursor hpos is out of bounds, don't draw garbage. This can
happen in mini-buffer windows when switching between echo area
glyphs and mini-buffer. */
if ((row->reversed_p
? (w->phys_cursor.hpos >= 0)
: (w->phys_cursor.hpos < row->used[TEXT_AREA])))
{
bool on_p = w->phys_cursor_on_p;
int x1;
int hpos = w->phys_cursor.hpos;
/* When the window is hscrolled, cursor hpos can legitimately be
out of bounds, but we draw the cursor at the corresponding
window margin in that case. */
if (!row->reversed_p && hpos < 0)
hpos = 0;
if (row->reversed_p && hpos >= row->used[TEXT_AREA])
hpos = row->used[TEXT_AREA] - 1;
x1 = draw_glyphs (w, w->phys_cursor.x, row, TEXT_AREA, hpos, hpos + 1,
hl, 0);
w->phys_cursor_on_p = on_p;
if (hl == DRAW_CURSOR)
w->phys_cursor_width = x1 - w->phys_cursor.x;
/* When we erase the cursor, and ROW is overlapped by other
rows, make sure that these overlapping parts of other rows
are redrawn. */
else if (hl == DRAW_NORMAL_TEXT && row->overlapped_p)
{
w->phys_cursor_width = x1 - w->phys_cursor.x;
if (row > w->current_matrix->rows
&& MATRIX_ROW_OVERLAPS_SUCC_P (row - 1))
x_fix_overlapping_area (w, row - 1, TEXT_AREA,
OVERLAPS_ERASED_CURSOR);
if (MATRIX_ROW_BOTTOM_Y (row) < window_text_bottom_y (w)
&& MATRIX_ROW_OVERLAPS_PRED_P (row + 1))
x_fix_overlapping_area (w, row + 1, TEXT_AREA,
OVERLAPS_ERASED_CURSOR);
}
}
}
/* Erase the image of a cursor of window W from the screen. */
void
erase_phys_cursor (struct window *w)
{
struct frame *f = XFRAME (w->frame);
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
int hpos = w->phys_cursor.hpos;
int vpos = w->phys_cursor.vpos;
bool mouse_face_here_p = false;
struct glyph_matrix *active_glyphs = w->current_matrix;
struct glyph_row *cursor_row;
struct glyph *cursor_glyph;
enum draw_glyphs_face hl;
/* No cursor displayed or row invalidated => nothing to do on the
screen. */
if (w->phys_cursor_type == NO_CURSOR)
goto mark_cursor_off;
/* VPOS >= active_glyphs->nrows means that window has been resized.
Don't bother to erase the cursor. */
if (vpos >= active_glyphs->nrows)
goto mark_cursor_off;
/* If row containing cursor is marked invalid, there is nothing we
can do. */
cursor_row = MATRIX_ROW (active_glyphs, vpos);
if (!cursor_row->enabled_p)
goto mark_cursor_off;
/* If line spacing is > 0, old cursor may only be partially visible in
window after split-window. So adjust visible height. */
cursor_row->visible_height = min (cursor_row->visible_height,
window_text_bottom_y (w) - cursor_row->y);
/* If row is completely invisible, don't attempt to delete a cursor which
isn't there. This can happen if cursor is at top of a window, and
we switch to a buffer with a header line in that window. */
if (cursor_row->visible_height <= 0)
goto mark_cursor_off;
/* If cursor is in the fringe, erase by drawing actual bitmap there. */
if (cursor_row->cursor_in_fringe_p)
{
cursor_row->cursor_in_fringe_p = false;
draw_fringe_bitmap (w, cursor_row, cursor_row->reversed_p);
goto mark_cursor_off;
}
/* This can happen when the new row is shorter than the old one.
In this case, either draw_glyphs or clear_end_of_line
should have cleared the cursor. Note that we wouldn't be
able to erase the cursor in this case because we don't have a
cursor glyph at hand. */
if ((cursor_row->reversed_p
? (w->phys_cursor.hpos < 0)
: (w->phys_cursor.hpos >= cursor_row->used[TEXT_AREA])))
goto mark_cursor_off;
/* When the window is hscrolled, cursor hpos can legitimately be out
of bounds, but we draw the cursor at the corresponding window
margin in that case. */
if (!cursor_row->reversed_p && hpos < 0)
hpos = 0;
if (cursor_row->reversed_p && hpos >= cursor_row->used[TEXT_AREA])
hpos = cursor_row->used[TEXT_AREA] - 1;
/* If the cursor is in the mouse face area, redisplay that when
we clear the cursor. */
if (! NILP (hlinfo->mouse_face_window)
&& coords_in_mouse_face_p (w, hpos, vpos)
/* Don't redraw the cursor's spot in mouse face if it is at the
end of a line (on a newline). The cursor appears there, but
mouse highlighting does not. */
&& cursor_row->used[TEXT_AREA] > hpos && hpos >= 0)
mouse_face_here_p = true;
/* Maybe clear the display under the cursor. */
if (w->phys_cursor_type == HOLLOW_BOX_CURSOR)
{
int x, y;
int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w);
int width;
cursor_glyph = get_phys_cursor_glyph (w);
if (cursor_glyph == NULL)
goto mark_cursor_off;
width = cursor_glyph->pixel_width;
x = w->phys_cursor.x;
if (x < 0)
{
width += x;
x = 0;
}
width = min (width, window_box_width (w, TEXT_AREA) - x);
y = WINDOW_TO_FRAME_PIXEL_Y (w, max (header_line_height, cursor_row->y));
x = WINDOW_TEXT_TO_FRAME_PIXEL_X (w, x);
if (width > 0)
FRAME_RIF (f)->clear_frame_area (f, x, y, width, cursor_row->visible_height);
}
/* Erase the cursor by redrawing the character underneath it. */
if (mouse_face_here_p)
hl = DRAW_MOUSE_FACE;
else
hl = DRAW_NORMAL_TEXT;
draw_phys_cursor_glyph (w, cursor_row, hl);
mark_cursor_off:
w->phys_cursor_on_p = false;
w->phys_cursor_type = NO_CURSOR;
}
/* Display or clear cursor of window W. If !ON, clear the cursor.
If ON, display the cursor; where to put the cursor is specified by
HPOS, VPOS, X and Y. */
void
display_and_set_cursor (struct window *w, bool on,
int hpos, int vpos, int x, int y)
{
struct frame *f = XFRAME (w->frame);
int new_cursor_type;
int new_cursor_width;
bool active_cursor;
struct glyph_row *glyph_row;
struct glyph *glyph;
/* This is pointless on invisible frames, and dangerous on garbaged
windows and frames; in the latter case, the frame or window may
be in the midst of changing its size, and x and y may be off the
window. */
if (! FRAME_VISIBLE_P (f)
|| FRAME_GARBAGED_P (f)
|| vpos >= w->current_matrix->nrows
|| hpos >= w->current_matrix->matrix_w)
return;
/* If cursor is off and we want it off, return quickly. */
if (!on && !w->phys_cursor_on_p)
return;
glyph_row = MATRIX_ROW (w->current_matrix, vpos);
/* If cursor row is not enabled, we don't really know where to
display the cursor. */
if (!glyph_row->enabled_p)
{
w->phys_cursor_on_p = false;
return;
}
glyph = NULL;
if (0 <= hpos && hpos < glyph_row->used[TEXT_AREA])
glyph = glyph_row->glyphs[TEXT_AREA] + hpos;
eassert (input_blocked_p ());
/* Set new_cursor_type to the cursor we want to be displayed. */
new_cursor_type = get_window_cursor_type (w, glyph,
&new_cursor_width, &active_cursor);
/* If cursor is currently being shown and we don't want it to be or
it is in the wrong place, or the cursor type is not what we want,
erase it. */
if (w->phys_cursor_on_p
&& (!on
|| w->phys_cursor.x != x
|| w->phys_cursor.y != y
/* HPOS can be negative in R2L rows whose
exact_window_width_line_p flag is set (i.e. their newline
would "overflow into the fringe"). */
|| hpos < 0
|| new_cursor_type != w->phys_cursor_type
|| ((new_cursor_type == BAR_CURSOR || new_cursor_type == HBAR_CURSOR)
&& new_cursor_width != w->phys_cursor_width)))
erase_phys_cursor (w);
/* Don't check phys_cursor_on_p here because that flag is only set
to false in some cases where we know that the cursor has been
completely erased, to avoid the extra work of erasing the cursor
twice. In other words, phys_cursor_on_p can be true and the cursor
still not be visible, or it has only been partly erased. */
if (on)
{
w->phys_cursor_ascent = glyph_row->ascent;
w->phys_cursor_height = glyph_row->height;
/* Set phys_cursor_.* before x_draw_.* is called because some
of them may need the information. */
w->phys_cursor.x = x;
w->phys_cursor.y = glyph_row->y;
w->phys_cursor.hpos = hpos;
w->phys_cursor.vpos = vpos;
}
FRAME_RIF (f)->draw_window_cursor (w, glyph_row, x, y,
new_cursor_type, new_cursor_width,
on, active_cursor);
}
/* Switch the display of W's cursor on or off, according to the value
of ON. */
static void
update_window_cursor (struct window *w, bool on)
{
/* Don't update cursor in windows whose frame is in the process
of being deleted. */
if (w->current_matrix)
{
int hpos = w->phys_cursor.hpos;
int vpos = w->phys_cursor.vpos;
struct glyph_row *row;
if (vpos >= w->current_matrix->nrows
|| hpos >= w->current_matrix->matrix_w)
return;
row = MATRIX_ROW (w->current_matrix, vpos);
/* When the window is hscrolled, cursor hpos can legitimately be
out of bounds, but we draw the cursor at the corresponding
window margin in that case. */
if (!row->reversed_p && hpos < 0)
hpos = 0;
if (row->reversed_p && hpos >= row->used[TEXT_AREA])
hpos = row->used[TEXT_AREA] - 1;
block_input ();
display_and_set_cursor (w, on, hpos, vpos,
w->phys_cursor.x, w->phys_cursor.y);
unblock_input ();
}
}
/* Call update_window_cursor with parameter ON_P on all leaf windows
in the window tree rooted at W. */
static void
update_cursor_in_window_tree (struct window *w, bool on_p)
{
while (w)
{
if (WINDOWP (w->contents))
update_cursor_in_window_tree (XWINDOW (w->contents), on_p);
else
update_window_cursor (w, on_p);
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
}
/* EXPORT:
Display the cursor on window W, or clear it, according to ON_P.
Don't change the cursor's position. */
void
x_update_cursor (struct frame *f, bool on_p)
{
update_cursor_in_window_tree (XWINDOW (f->root_window), on_p);
}
/* EXPORT:
Clear the cursor of window W to background color, and mark the
cursor as not shown. This is used when the text where the cursor
is about to be rewritten. */
void
x_clear_cursor (struct window *w)
{
if (FRAME_VISIBLE_P (XFRAME (w->frame)) && w->phys_cursor_on_p)
update_window_cursor (w, false);
}
#endif /* HAVE_WINDOW_SYSTEM */
/* Implementation of draw_row_with_mouse_face for GUI sessions, GPM,
and MSDOS. */
static void
draw_row_with_mouse_face (struct window *w, int start_x, struct glyph_row *row,
int start_hpos, int end_hpos,
enum draw_glyphs_face draw)
{
#ifdef HAVE_WINDOW_SYSTEM
if (FRAME_WINDOW_P (XFRAME (w->frame)))
{
draw_glyphs (w, start_x, row, TEXT_AREA, start_hpos, end_hpos, draw, 0);
return;
}
#endif
#if defined (HAVE_GPM) || defined (MSDOS) || defined (WINDOWSNT)
tty_draw_row_with_mouse_face (w, row, start_hpos, end_hpos, draw);
#endif
}
/* Display the active region described by mouse_face_* according to DRAW. */
static void
show_mouse_face (Mouse_HLInfo *hlinfo, enum draw_glyphs_face draw)
{
struct window *w = XWINDOW (hlinfo->mouse_face_window);
struct frame *f = XFRAME (WINDOW_FRAME (w));
if (/* If window is in the process of being destroyed, don't bother
to do anything. */
w->current_matrix != NULL
/* Don't update mouse highlight if hidden. */
&& (draw != DRAW_MOUSE_FACE || !hlinfo->mouse_face_hidden)
/* Recognize when we are called to operate on rows that don't exist
anymore. This can happen when a window is split. */
&& hlinfo->mouse_face_end_row < w->current_matrix->nrows)
{
bool phys_cursor_on_p = w->phys_cursor_on_p;
struct glyph_row *row, *first, *last;
first = MATRIX_ROW (w->current_matrix, hlinfo->mouse_face_beg_row);
last = MATRIX_ROW (w->current_matrix, hlinfo->mouse_face_end_row);
for (row = first; row <= last && row->enabled_p; ++row)
{
int start_hpos, end_hpos, start_x;
/* For all but the first row, the highlight starts at column 0. */
if (row == first)
{
/* R2L rows have BEG and END in reversed order, but the
screen drawing geometry is always left to right. So
we need to mirror the beginning and end of the
highlighted area in R2L rows. */
if (!row->reversed_p)
{
start_hpos = hlinfo->mouse_face_beg_col;
start_x = hlinfo->mouse_face_beg_x;
}
else if (row == last)
{
start_hpos = hlinfo->mouse_face_end_col;
start_x = hlinfo->mouse_face_end_x;
}
else
{
start_hpos = 0;
start_x = 0;
}
}
else if (row->reversed_p && row == last)
{
start_hpos = hlinfo->mouse_face_end_col;
start_x = hlinfo->mouse_face_end_x;
}
else
{
start_hpos = 0;
start_x = 0;
}
if (row == last)
{
if (!row->reversed_p)
end_hpos = hlinfo->mouse_face_end_col;
else if (row == first)
end_hpos = hlinfo->mouse_face_beg_col;
else
{
end_hpos = row->used[TEXT_AREA];
if (draw == DRAW_NORMAL_TEXT)
row->fill_line_p = true; /* Clear to end of line. */
}
}
else if (row->reversed_p && row == first)
end_hpos = hlinfo->mouse_face_beg_col;
else
{
end_hpos = row->used[TEXT_AREA];
if (draw == DRAW_NORMAL_TEXT)
row->fill_line_p = true; /* Clear to end of line. */
}
if (end_hpos > start_hpos)
{
draw_row_with_mouse_face (w, start_x, row,
start_hpos, end_hpos, draw);
row->mouse_face_p
= draw == DRAW_MOUSE_FACE || draw == DRAW_IMAGE_RAISED;
}
}
/* When we've written over the cursor, arrange for it to
be displayed again. */
if (FRAME_WINDOW_P (f)
&& phys_cursor_on_p && !w->phys_cursor_on_p)
{
#ifdef HAVE_WINDOW_SYSTEM
int hpos = w->phys_cursor.hpos;
/* When the window is hscrolled, cursor hpos can legitimately be
out of bounds, but we draw the cursor at the corresponding
window margin in that case. */
if (!row->reversed_p && hpos < 0)
hpos = 0;
if (row->reversed_p && hpos >= row->used[TEXT_AREA])
hpos = row->used[TEXT_AREA] - 1;
block_input ();
display_and_set_cursor (w, true, hpos, w->phys_cursor.vpos,
w->phys_cursor.x, w->phys_cursor.y);
unblock_input ();
#endif /* HAVE_WINDOW_SYSTEM */
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* Change the mouse cursor. */
if (FRAME_WINDOW_P (f) && NILP (do_mouse_tracking))
{
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
if (draw == DRAW_NORMAL_TEXT
&& !EQ (hlinfo->mouse_face_window, f->tool_bar_window))
FRAME_RIF (f)->define_frame_cursor (f, FRAME_X_OUTPUT (f)->text_cursor);
else
#endif
if (draw == DRAW_MOUSE_FACE)
FRAME_RIF (f)->define_frame_cursor (f, FRAME_X_OUTPUT (f)->hand_cursor);
else
FRAME_RIF (f)->define_frame_cursor (f, FRAME_X_OUTPUT (f)->nontext_cursor);
}
#endif /* HAVE_WINDOW_SYSTEM */
}
/* EXPORT:
Clear out the mouse-highlighted active region.
Redraw it un-highlighted first. Value is true if mouse
face was actually drawn unhighlighted. */
bool
clear_mouse_face (Mouse_HLInfo *hlinfo)
{
bool cleared
= !hlinfo->mouse_face_hidden && !NILP (hlinfo->mouse_face_window);
if (cleared)
show_mouse_face (hlinfo, DRAW_NORMAL_TEXT);
hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1;
hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1;
hlinfo->mouse_face_window = Qnil;
hlinfo->mouse_face_overlay = Qnil;
return cleared;
}
/* Return true if the coordinates HPOS and VPOS on windows W are
within the mouse face on that window. */
static bool
coords_in_mouse_face_p (struct window *w, int hpos, int vpos)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (XFRAME (w->frame));
/* Quickly resolve the easy cases. */
if (!(WINDOWP (hlinfo->mouse_face_window)
&& XWINDOW (hlinfo->mouse_face_window) == w))
return false;
if (vpos < hlinfo->mouse_face_beg_row
|| vpos > hlinfo->mouse_face_end_row)
return false;
if (vpos > hlinfo->mouse_face_beg_row
&& vpos < hlinfo->mouse_face_end_row)
return true;
if (!MATRIX_ROW (w->current_matrix, vpos)->reversed_p)
{
if (hlinfo->mouse_face_beg_row == hlinfo->mouse_face_end_row)
{
if (hlinfo->mouse_face_beg_col <= hpos && hpos < hlinfo->mouse_face_end_col)
return true;
}
else if ((vpos == hlinfo->mouse_face_beg_row
&& hpos >= hlinfo->mouse_face_beg_col)
|| (vpos == hlinfo->mouse_face_end_row
&& hpos < hlinfo->mouse_face_end_col))
return true;
}
else
{
if (hlinfo->mouse_face_beg_row == hlinfo->mouse_face_end_row)
{
if (hlinfo->mouse_face_end_col < hpos && hpos <= hlinfo->mouse_face_beg_col)
return true;
}
else if ((vpos == hlinfo->mouse_face_beg_row
&& hpos <= hlinfo->mouse_face_beg_col)
|| (vpos == hlinfo->mouse_face_end_row
&& hpos > hlinfo->mouse_face_end_col))
return true;
}
return false;
}
/* EXPORT:
True if physical cursor of window W is within mouse face. */
bool
cursor_in_mouse_face_p (struct window *w)
{
int hpos = w->phys_cursor.hpos;
int vpos = w->phys_cursor.vpos;
struct glyph_row *row = MATRIX_ROW (w->current_matrix, vpos);
/* When the window is hscrolled, cursor hpos can legitimately be out
of bounds, but we draw the cursor at the corresponding window
margin in that case. */
if (!row->reversed_p && hpos < 0)
hpos = 0;
if (row->reversed_p && hpos >= row->used[TEXT_AREA])
hpos = row->used[TEXT_AREA] - 1;
return coords_in_mouse_face_p (w, hpos, vpos);
}
\f
/* Find the glyph rows START_ROW and END_ROW of window W that display
characters between buffer positions START_CHARPOS and END_CHARPOS
(excluding END_CHARPOS). DISP_STRING is a display string that
covers these buffer positions. This is similar to
row_containing_pos, but is more accurate when bidi reordering makes
buffer positions change non-linearly with glyph rows. */
static void
rows_from_pos_range (struct window *w,
ptrdiff_t start_charpos, ptrdiff_t end_charpos,
Lisp_Object disp_string,
struct glyph_row **start, struct glyph_row **end)
{
struct glyph_row *first = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
int last_y = window_text_bottom_y (w);
struct glyph_row *row;
*start = NULL;
*end = NULL;
while (!first->enabled_p
&& first < MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w))
first++;
/* Find the START row. */
for (row = first;
row->enabled_p && MATRIX_ROW_BOTTOM_Y (row) <= last_y;
row++)
{
/* A row can potentially be the START row if the range of the
characters it displays intersects the range
[START_CHARPOS..END_CHARPOS). */
if (! ((start_charpos < MATRIX_ROW_START_CHARPOS (row)
&& end_charpos < MATRIX_ROW_START_CHARPOS (row))
/* See the commentary in row_containing_pos, for the
explanation of the complicated way to check whether
some position is beyond the end of the characters
displayed by a row. */
|| ((start_charpos > MATRIX_ROW_END_CHARPOS (row)
|| (start_charpos == MATRIX_ROW_END_CHARPOS (row)
&& !row->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (row)))
&& (end_charpos > MATRIX_ROW_END_CHARPOS (row)
|| (end_charpos == MATRIX_ROW_END_CHARPOS (row)
&& !row->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (row))))))
{
/* Found a candidate row. Now make sure at least one of the
glyphs it displays has a charpos from the range
[START_CHARPOS..END_CHARPOS).
This is not obvious because bidi reordering could make
buffer positions of a row be 1,2,3,102,101,100, and if we
want to highlight characters in [50..60), we don't want
this row, even though [50..60) does intersect [1..103),
the range of character positions given by the row's start
and end positions. */
struct glyph *g = row->glyphs[TEXT_AREA];
struct glyph *e = g + row->used[TEXT_AREA];
while (g < e)
{
if (((BUFFERP (g->object) || NILP (g->object))
&& start_charpos <= g->charpos && g->charpos < end_charpos)
/* A glyph that comes from DISP_STRING is by
definition to be highlighted. */
|| EQ (g->object, disp_string))
*start = row;
g++;
}
if (*start)
break;
}
}
/* Find the END row. */
if (!*start
/* If the last row is partially visible, start looking for END
from that row, instead of starting from FIRST. */
&& !(row->enabled_p
&& row->y < last_y && MATRIX_ROW_BOTTOM_Y (row) > last_y))
row = first;
for ( ; row->enabled_p && MATRIX_ROW_BOTTOM_Y (row) <= last_y; row++)
{
struct glyph_row *next = row + 1;
ptrdiff_t next_start = MATRIX_ROW_START_CHARPOS (next);
if (!next->enabled_p
|| next >= MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w)
/* The first row >= START whose range of displayed characters
does NOT intersect the range [START_CHARPOS..END_CHARPOS]
is the row END + 1. */
|| (start_charpos < next_start
&& end_charpos < next_start)
|| ((start_charpos > MATRIX_ROW_END_CHARPOS (next)
|| (start_charpos == MATRIX_ROW_END_CHARPOS (next)
&& !next->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (next)))
&& (end_charpos > MATRIX_ROW_END_CHARPOS (next)
|| (end_charpos == MATRIX_ROW_END_CHARPOS (next)
&& !next->ends_at_zv_p
&& !MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P (next)))))
{
*end = row;
break;
}
else
{
/* If the next row's edges intersect [START_CHARPOS..END_CHARPOS],
but none of the characters it displays are in the range, it is
also END + 1. */
struct glyph *g = next->glyphs[TEXT_AREA];
struct glyph *s = g;
struct glyph *e = g + next->used[TEXT_AREA];
while (g < e)
{
if (((BUFFERP (g->object) || NILP (g->object))
&& ((start_charpos <= g->charpos && g->charpos < end_charpos)
/* If the buffer position of the first glyph in
the row is equal to END_CHARPOS, it means
the last character to be highlighted is the
newline of ROW, and we must consider NEXT as
END, not END+1. */
|| (((!next->reversed_p && g == s)
|| (next->reversed_p && g == e - 1))
&& (g->charpos == end_charpos
/* Special case for when NEXT is an
empty line at ZV. */
|| (g->charpos == -1
&& !row->ends_at_zv_p
&& next_start == end_charpos)))))
/* A glyph that comes from DISP_STRING is by
definition to be highlighted. */
|| EQ (g->object, disp_string))
break;
g++;
}
if (g == e)
{
*end = row;
break;
}
/* The first row that ends at ZV must be the last to be
highlighted. */
else if (next->ends_at_zv_p)
{
*end = next;
break;
}
}
}
}
/* This function sets the mouse_face_* elements of HLINFO, assuming
the mouse cursor is on a glyph with buffer charpos MOUSE_CHARPOS in
window WINDOW. START_CHARPOS and END_CHARPOS are buffer positions
for the overlay or run of text properties specifying the mouse
face. BEFORE_STRING and AFTER_STRING, if non-nil, are a
before-string and after-string that must also be highlighted.
DISP_STRING, if non-nil, is a display string that may cover some
or all of the highlighted text. */
static void
mouse_face_from_buffer_pos (Lisp_Object window,
Mouse_HLInfo *hlinfo,
ptrdiff_t mouse_charpos,
ptrdiff_t start_charpos,
ptrdiff_t end_charpos,
Lisp_Object before_string,
Lisp_Object after_string,
Lisp_Object disp_string)
{
struct window *w = XWINDOW (window);
struct glyph_row *first = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
struct glyph_row *r1, *r2;
struct glyph *glyph, *end;
ptrdiff_t ignore, pos;
int x;
eassert (NILP (disp_string) || STRINGP (disp_string));
eassert (NILP (before_string) || STRINGP (before_string));
eassert (NILP (after_string) || STRINGP (after_string));
/* Find the rows corresponding to START_CHARPOS and END_CHARPOS. */
rows_from_pos_range (w, start_charpos, end_charpos, disp_string, &r1, &r2);
if (r1 == NULL)
r1 = MATRIX_ROW (w->current_matrix, w->window_end_vpos);
/* If the before-string or display-string contains newlines,
rows_from_pos_range skips to its last row. Move back. */
if (!NILP (before_string) || !NILP (disp_string))
{
struct glyph_row *prev;
while ((prev = r1 - 1, prev >= first)
&& MATRIX_ROW_END_CHARPOS (prev) == start_charpos
&& prev->used[TEXT_AREA] > 0)
{
struct glyph *beg = prev->glyphs[TEXT_AREA];
glyph = beg + prev->used[TEXT_AREA];
while (--glyph >= beg && NILP (glyph->object));
if (glyph < beg
|| !(EQ (glyph->object, before_string)
|| EQ (glyph->object, disp_string)))
break;
r1 = prev;
}
}
if (r2 == NULL)
{
r2 = MATRIX_ROW (w->current_matrix, w->window_end_vpos);
hlinfo->mouse_face_past_end = true;
}
else if (!NILP (after_string))
{
/* If the after-string has newlines, advance to its last row. */
struct glyph_row *next;
struct glyph_row *last
= MATRIX_ROW (w->current_matrix, w->window_end_vpos);
for (next = r2 + 1;
next <= last
&& next->used[TEXT_AREA] > 0
&& EQ (next->glyphs[TEXT_AREA]->object, after_string);
++next)
r2 = next;
}
/* The rest of the display engine assumes that mouse_face_beg_row is
either above mouse_face_end_row or identical to it. But with
bidi-reordered continued lines, the row for START_CHARPOS could
be below the row for END_CHARPOS. If so, swap the rows and store
them in correct order. */
if (r1->y > r2->y)
{
struct glyph_row *tem = r2;
r2 = r1;
r1 = tem;
}
hlinfo->mouse_face_beg_row = MATRIX_ROW_VPOS (r1, w->current_matrix);
hlinfo->mouse_face_end_row = MATRIX_ROW_VPOS (r2, w->current_matrix);
/* For a bidi-reordered row, the positions of BEFORE_STRING,
AFTER_STRING, DISP_STRING, START_CHARPOS, and END_CHARPOS
could be anywhere in the row and in any order. The strategy
below is to find the leftmost and the rightmost glyph that
belongs to either of these 3 strings, or whose position is
between START_CHARPOS and END_CHARPOS, and highlight all the
glyphs between those two. This may cover more than just the text
between START_CHARPOS and END_CHARPOS if the range of characters
strides the bidi level boundary, e.g. if the beginning is in R2L
text while the end is in L2R text or vice versa. */
if (!r1->reversed_p)
{
/* This row is in a left to right paragraph. Scan it left to
right. */
glyph = r1->glyphs[TEXT_AREA];
end = glyph + r1->used[TEXT_AREA];
x = r1->x;
/* Skip truncation glyphs at the start of the glyph row. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (r1))
for (; glyph < end
&& NILP (glyph->object)
&& glyph->charpos < 0;
++glyph)
x += glyph->pixel_width;
/* Scan the glyph row, looking for BEFORE_STRING, AFTER_STRING,
or DISP_STRING, and the first glyph from buffer whose
position is between START_CHARPOS and END_CHARPOS. */
for (; glyph < end
&& !NILP (glyph->object)
&& !EQ (glyph->object, disp_string)
&& !(BUFFERP (glyph->object)
&& (glyph->charpos >= start_charpos
&& glyph->charpos < end_charpos));
++glyph)
{
/* BEFORE_STRING or AFTER_STRING are only relevant if they
are present at buffer positions between START_CHARPOS and
END_CHARPOS, or if they come from an overlay. */
if (EQ (glyph->object, before_string))
{
pos = string_buffer_position (before_string,
start_charpos);
/* If pos == 0, it means before_string came from an
overlay, not from a buffer position. */
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
else if (EQ (glyph->object, after_string))
{
pos = string_buffer_position (after_string, end_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
x += glyph->pixel_width;
}
hlinfo->mouse_face_beg_x = x;
hlinfo->mouse_face_beg_col = glyph - r1->glyphs[TEXT_AREA];
}
else
{
/* This row is in a right to left paragraph. Scan it right to
left. */
struct glyph *g;
end = r1->glyphs[TEXT_AREA] - 1;
glyph = end + r1->used[TEXT_AREA];
/* Skip truncation glyphs at the start of the glyph row. */
if (MATRIX_ROW_DISPLAYS_TEXT_P (r1))
for (; glyph > end
&& NILP (glyph->object)
&& glyph->charpos < 0;
--glyph)
;
/* Scan the glyph row, looking for BEFORE_STRING, AFTER_STRING,
or DISP_STRING, and the first glyph from buffer whose
position is between START_CHARPOS and END_CHARPOS. */
for (; glyph > end
&& !NILP (glyph->object)
&& !EQ (glyph->object, disp_string)
&& !(BUFFERP (glyph->object)
&& (glyph->charpos >= start_charpos
&& glyph->charpos < end_charpos));
--glyph)
{
/* BEFORE_STRING or AFTER_STRING are only relevant if they
are present at buffer positions between START_CHARPOS and
END_CHARPOS, or if they come from an overlay. */
if (EQ (glyph->object, before_string))
{
pos = string_buffer_position (before_string, start_charpos);
/* If pos == 0, it means before_string came from an
overlay, not from a buffer position. */
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
else if (EQ (glyph->object, after_string))
{
pos = string_buffer_position (after_string, end_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
}
glyph++; /* first glyph to the right of the highlighted area */
for (g = r1->glyphs[TEXT_AREA], x = r1->x; g < glyph; g++)
x += g->pixel_width;
hlinfo->mouse_face_beg_x = x;
hlinfo->mouse_face_beg_col = glyph - r1->glyphs[TEXT_AREA];
}
/* If the highlight ends in a different row, compute GLYPH and END
for the end row. Otherwise, reuse the values computed above for
the row where the highlight begins. */
if (r2 != r1)
{
if (!r2->reversed_p)
{
glyph = r2->glyphs[TEXT_AREA];
end = glyph + r2->used[TEXT_AREA];
x = r2->x;
}
else
{
end = r2->glyphs[TEXT_AREA] - 1;
glyph = end + r2->used[TEXT_AREA];
}
}
if (!r2->reversed_p)
{
/* Skip truncation and continuation glyphs near the end of the
row, and also blanks and stretch glyphs inserted by
extend_face_to_end_of_line. */
while (end > glyph
&& NILP ((end - 1)->object))
--end;
/* Scan the rest of the glyph row from the end, looking for the
first glyph that comes from BEFORE_STRING, AFTER_STRING, or
DISP_STRING, or whose position is between START_CHARPOS
and END_CHARPOS */
for (--end;
end > glyph
&& !NILP (end->object)
&& !EQ (end->object, disp_string)
&& !(BUFFERP (end->object)
&& (end->charpos >= start_charpos
&& end->charpos < end_charpos));
--end)
{
/* BEFORE_STRING or AFTER_STRING are only relevant if they
are present at buffer positions between START_CHARPOS and
END_CHARPOS, or if they come from an overlay. */
if (EQ (end->object, before_string))
{
pos = string_buffer_position (before_string, start_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
else if (EQ (end->object, after_string))
{
pos = string_buffer_position (after_string, end_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
}
/* Find the X coordinate of the last glyph to be highlighted. */
for (; glyph <= end; ++glyph)
x += glyph->pixel_width;
hlinfo->mouse_face_end_x = x;
hlinfo->mouse_face_end_col = glyph - r2->glyphs[TEXT_AREA];
}
else
{
/* Skip truncation and continuation glyphs near the end of the
row, and also blanks and stretch glyphs inserted by
extend_face_to_end_of_line. */
x = r2->x;
end++;
while (end < glyph
&& NILP (end->object))
{
x += end->pixel_width;
++end;
}
/* Scan the rest of the glyph row from the end, looking for the
first glyph that comes from BEFORE_STRING, AFTER_STRING, or
DISP_STRING, or whose position is between START_CHARPOS
and END_CHARPOS */
for ( ;
end < glyph
&& !NILP (end->object)
&& !EQ (end->object, disp_string)
&& !(BUFFERP (end->object)
&& (end->charpos >= start_charpos
&& end->charpos < end_charpos));
++end)
{
/* BEFORE_STRING or AFTER_STRING are only relevant if they
are present at buffer positions between START_CHARPOS and
END_CHARPOS, or if they come from an overlay. */
if (EQ (end->object, before_string))
{
pos = string_buffer_position (before_string, start_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
else if (EQ (end->object, after_string))
{
pos = string_buffer_position (after_string, end_charpos);
if (!pos || (pos >= start_charpos && pos < end_charpos))
break;
}
x += end->pixel_width;
}
/* If we exited the above loop because we arrived at the last
glyph of the row, and its buffer position is still not in
range, it means the last character in range is the preceding
newline. Bump the end column and x values to get past the
last glyph. */
if (end == glyph
&& BUFFERP (end->object)
&& (end->charpos < start_charpos
|| end->charpos >= end_charpos))
{
x += end->pixel_width;
++end;
}
hlinfo->mouse_face_end_x = x;
hlinfo->mouse_face_end_col = end - r2->glyphs[TEXT_AREA];
}
hlinfo->mouse_face_window = window;
hlinfo->mouse_face_face_id
= face_at_buffer_position (w, mouse_charpos, &ignore,
mouse_charpos + 1,
!hlinfo->mouse_face_hidden, -1);
show_mouse_face (hlinfo, DRAW_MOUSE_FACE);
}
/* The following function is not used anymore (replaced with
mouse_face_from_string_pos), but I leave it here for the time
being, in case someone would. */
#if false /* not used */
/* Find the position of the glyph for position POS in OBJECT in
window W's current matrix, and return in *X, *Y the pixel
coordinates, and return in *HPOS, *VPOS the column/row of the glyph.
RIGHT_P means return the position of the right edge of the glyph.
!RIGHT_P means return the left edge position.
If no glyph for POS exists in the matrix, return the position of
the glyph with the next smaller position that is in the matrix, if
RIGHT_P is false. If RIGHT_P, and no glyph for POS
exists in the matrix, return the position of the glyph with the
next larger position in OBJECT.
Value is true if a glyph was found. */
static bool
fast_find_string_pos (struct window *w, ptrdiff_t pos, Lisp_Object object,
int *hpos, int *vpos, int *x, int *y, bool right_p)
{
int yb = window_text_bottom_y (w);
struct glyph_row *r;
struct glyph *best_glyph = NULL;
struct glyph_row *best_row = NULL;
int best_x = 0;
for (r = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
r->enabled_p && r->y < yb;
++r)
{
struct glyph *g = r->glyphs[TEXT_AREA];
struct glyph *e = g + r->used[TEXT_AREA];
int gx;
for (gx = r->x; g < e; gx += g->pixel_width, ++g)
if (EQ (g->object, object))
{
if (g->charpos == pos)
{
best_glyph = g;
best_x = gx;
best_row = r;
goto found;
}
else if (best_glyph == NULL
|| ((eabs (g->charpos - pos)
< eabs (best_glyph->charpos - pos))
&& (right_p
? g->charpos < pos
: g->charpos > pos)))
{
best_glyph = g;
best_x = gx;
best_row = r;
}
}
}
found:
if (best_glyph)
{
*x = best_x;
*hpos = best_glyph - best_row->glyphs[TEXT_AREA];
if (right_p)
{
*x += best_glyph->pixel_width;
++*hpos;
}
*y = best_row->y;
*vpos = MATRIX_ROW_VPOS (best_row, w->current_matrix);
}
return best_glyph != NULL;
}
#endif /* not used */
/* Find the positions of the first and the last glyphs in window W's
current matrix that occlude positions [STARTPOS..ENDPOS) in OBJECT
(assumed to be a string), and return in HLINFO's mouse_face_*
members the pixel and column/row coordinates of those glyphs. */
static void
mouse_face_from_string_pos (struct window *w, Mouse_HLInfo *hlinfo,
Lisp_Object object,
ptrdiff_t startpos, ptrdiff_t endpos)
{
int yb = window_text_bottom_y (w);
struct glyph_row *r;
struct glyph *g, *e;
int gx;
bool found = false;
/* Find the glyph row with at least one position in the range
[STARTPOS..ENDPOS), and the first glyph in that row whose
position belongs to that range. */
for (r = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
r->enabled_p && r->y < yb;
++r)
{
if (!r->reversed_p)
{
g = r->glyphs[TEXT_AREA];
e = g + r->used[TEXT_AREA];
for (gx = r->x; g < e; gx += g->pixel_width, ++g)
if (EQ (g->object, object)
&& startpos <= g->charpos && g->charpos < endpos)
{
hlinfo->mouse_face_beg_row
= MATRIX_ROW_VPOS (r, w->current_matrix);
hlinfo->mouse_face_beg_col = g - r->glyphs[TEXT_AREA];
hlinfo->mouse_face_beg_x = gx;
found = true;
break;
}
}
else
{
struct glyph *g1;
e = r->glyphs[TEXT_AREA];
g = e + r->used[TEXT_AREA];
for ( ; g > e; --g)
if (EQ ((g-1)->object, object)
&& startpos <= (g-1)->charpos && (g-1)->charpos < endpos)
{
hlinfo->mouse_face_beg_row
= MATRIX_ROW_VPOS (r, w->current_matrix);
hlinfo->mouse_face_beg_col = g - r->glyphs[TEXT_AREA];
for (gx = r->x, g1 = r->glyphs[TEXT_AREA]; g1 < g; ++g1)
gx += g1->pixel_width;
hlinfo->mouse_face_beg_x = gx;
found = true;
break;
}
}
if (found)
break;
}
if (!found)
return;
/* Starting with the next row, look for the first row which does NOT
include any glyphs whose positions are in the range. */
for (++r; r->enabled_p && r->y < yb; ++r)
{
g = r->glyphs[TEXT_AREA];
e = g + r->used[TEXT_AREA];
found = false;
for ( ; g < e; ++g)
if (EQ (g->object, object)
&& startpos <= g->charpos && g->charpos < endpos)
{
found = true;
break;
}
if (!found)
break;
}
/* The highlighted region ends on the previous row. */
r--;
/* Set the end row. */
hlinfo->mouse_face_end_row = MATRIX_ROW_VPOS (r, w->current_matrix);
/* Compute and set the end column and the end column's horizontal
pixel coordinate. */
if (!r->reversed_p)
{
g = r->glyphs[TEXT_AREA];
e = g + r->used[TEXT_AREA];
for ( ; e > g; --e)
if (EQ ((e-1)->object, object)
&& startpos <= (e-1)->charpos && (e-1)->charpos < endpos)
break;
hlinfo->mouse_face_end_col = e - g;
for (gx = r->x; g < e; ++g)
gx += g->pixel_width;
hlinfo->mouse_face_end_x = gx;
}
else
{
e = r->glyphs[TEXT_AREA];
g = e + r->used[TEXT_AREA];
for (gx = r->x ; e < g; ++e)
{
if (EQ (e->object, object)
&& startpos <= e->charpos && e->charpos < endpos)
break;
gx += e->pixel_width;
}
hlinfo->mouse_face_end_col = e - r->glyphs[TEXT_AREA];
hlinfo->mouse_face_end_x = gx;
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* See if position X, Y is within a hot-spot of an image. */
static bool
on_hot_spot_p (Lisp_Object hot_spot, int x, int y)
{
if (!CONSP (hot_spot))
return false;
if (EQ (XCAR (hot_spot), Qrect))
{
/* CDR is (Top-Left . Bottom-Right) = ((x0 . y0) . (x1 . y1)) */
Lisp_Object rect = XCDR (hot_spot);
Lisp_Object tem;
if (!CONSP (rect))
return false;
if (!CONSP (XCAR (rect)))
return false;
if (!CONSP (XCDR (rect)))
return false;
if (!(tem = XCAR (XCAR (rect)), INTEGERP (tem) && x >= XINT (tem)))
return false;
if (!(tem = XCDR (XCAR (rect)), INTEGERP (tem) && y >= XINT (tem)))
return false;
if (!(tem = XCAR (XCDR (rect)), INTEGERP (tem) && x <= XINT (tem)))
return false;
if (!(tem = XCDR (XCDR (rect)), INTEGERP (tem) && y <= XINT (tem)))
return false;
return true;
}
else if (EQ (XCAR (hot_spot), Qcircle))
{
/* CDR is (Center . Radius) = ((x0 . y0) . r) */
Lisp_Object circ = XCDR (hot_spot);
Lisp_Object lr, lx0, ly0;
if (CONSP (circ)
&& CONSP (XCAR (circ))
&& (lr = XCDR (circ), NUMBERP (lr))
&& (lx0 = XCAR (XCAR (circ)), INTEGERP (lx0))
&& (ly0 = XCDR (XCAR (circ)), INTEGERP (ly0)))
{
double r = XFLOATINT (lr);
double dx = XINT (lx0) - x;
double dy = XINT (ly0) - y;
return (dx * dx + dy * dy <= r * r);
}
}
else if (EQ (XCAR (hot_spot), Qpoly))
{
/* CDR is [x0 y0 x1 y1 x2 y2 ...x(n-1) y(n-1)] */
if (VECTORP (XCDR (hot_spot)))
{
struct Lisp_Vector *v = XVECTOR (XCDR (hot_spot));
Lisp_Object *poly = v->contents;
ptrdiff_t n = v->header.size;
ptrdiff_t i;
bool inside = false;
Lisp_Object lx, ly;
int x0, y0;
/* Need an even number of coordinates, and at least 3 edges. */
if (n < 6 || n & 1)
return false;
/* Count edge segments intersecting line from (X,Y) to (X,infinity).
If count is odd, we are inside polygon. Pixels on edges
may or may not be included depending on actual geometry of the
polygon. */
if ((lx = poly[n-2], !INTEGERP (lx))
|| (ly = poly[n-1], !INTEGERP (lx)))
return false;
x0 = XINT (lx), y0 = XINT (ly);
for (i = 0; i < n; i += 2)
{
int x1 = x0, y1 = y0;
if ((lx = poly[i], !INTEGERP (lx))
|| (ly = poly[i+1], !INTEGERP (ly)))
return false;
x0 = XINT (lx), y0 = XINT (ly);
/* Does this segment cross the X line? */
if (x0 >= x)
{
if (x1 >= x)
continue;
}
else if (x1 < x)
continue;
if (y > y0 && y > y1)
continue;
if (y < y0 + ((y1 - y0) * (x - x0)) / (x1 - x0))
inside = !inside;
}
return inside;
}
}
return false;
}
Lisp_Object
find_hot_spot (Lisp_Object map, int x, int y)
{
while (CONSP (map))
{
if (CONSP (XCAR (map))
&& on_hot_spot_p (XCAR (XCAR (map)), x, y))
return XCAR (map);
map = XCDR (map);
}
return Qnil;
}
DEFUN ("lookup-image-map", Flookup_image_map, Slookup_image_map,
3, 3, 0,
doc: /* Lookup in image map MAP coordinates X and Y.
An image map is an alist where each element has the format (AREA ID PLIST).
An AREA is specified as either a rectangle, a circle, or a polygon:
A rectangle is a cons (rect . ((x0 . y0) . (x1 . y1))) specifying the
pixel coordinates of the upper left and bottom right corners.
A circle is a cons (circle . ((x0 . y0) . r)) specifying the center
and the radius of the circle; r may be a float or integer.
A polygon is a cons (poly . [x0 y0 x1 y1 ...]) where each pair in the
vector describes one corner in the polygon.
Returns the alist element for the first matching AREA in MAP. */)
(Lisp_Object map, Lisp_Object x, Lisp_Object y)
{
if (NILP (map))
return Qnil;
CHECK_NUMBER (x);
CHECK_NUMBER (y);
return find_hot_spot (map,
clip_to_bounds (INT_MIN, XINT (x), INT_MAX),
clip_to_bounds (INT_MIN, XINT (y), INT_MAX));
}
#endif /* HAVE_WINDOW_SYSTEM */
/* Display frame CURSOR, optionally using shape defined by POINTER. */
static void
define_frame_cursor1 (struct frame *f, Cursor cursor, Lisp_Object pointer)
{
#ifdef HAVE_WINDOW_SYSTEM
if (!FRAME_WINDOW_P (f))
return;
/* Do not change cursor shape while dragging mouse. */
if (EQ (do_mouse_tracking, Qdragging))
return;
if (!NILP (pointer))
{
if (EQ (pointer, Qarrow))
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
else if (EQ (pointer, Qhand))
cursor = FRAME_X_OUTPUT (f)->hand_cursor;
else if (EQ (pointer, Qtext))
cursor = FRAME_X_OUTPUT (f)->text_cursor;
else if (EQ (pointer, intern ("hdrag")))
cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
else if (EQ (pointer, intern ("nhdrag")))
cursor = FRAME_X_OUTPUT (f)->vertical_drag_cursor;
# ifdef HAVE_X_WINDOWS
else if (EQ (pointer, intern ("vdrag")))
cursor = FRAME_DISPLAY_INFO (f)->vertical_scroll_bar_cursor;
# endif
else if (EQ (pointer, intern ("hourglass")))
cursor = FRAME_X_OUTPUT (f)->hourglass_cursor;
else if (EQ (pointer, Qmodeline))
cursor = FRAME_X_OUTPUT (f)->modeline_cursor;
else
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
}
if (cursor != No_Cursor)
FRAME_RIF (f)->define_frame_cursor (f, cursor);
#endif
}
/* Take proper action when mouse has moved to the mode or header line
or marginal area AREA of window W, x-position X and y-position Y.
X is relative to the start of the text display area of W, so the
width of bitmap areas and scroll bars must be subtracted to get a
position relative to the start of the mode line. */
static void
note_mode_line_or_margin_highlight (Lisp_Object window, int x, int y,
enum window_part area)
{
struct window *w = XWINDOW (window);
struct frame *f = XFRAME (w->frame);
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
#ifdef HAVE_WINDOW_SYSTEM
Display_Info *dpyinfo;
#endif
Cursor cursor = No_Cursor;
Lisp_Object pointer = Qnil;
int dx, dy, width, height;
ptrdiff_t charpos;
Lisp_Object string, object = Qnil;
Lisp_Object pos UNINIT;
Lisp_Object mouse_face;
int original_x_pixel = x;
struct glyph * glyph = NULL, * row_start_glyph = NULL;
struct glyph_row *row UNINIT;
if (area == ON_MODE_LINE || area == ON_HEADER_LINE)
{
int x0;
struct glyph *end;
/* Kludge alert: mode_line_string takes X/Y in pixels, but
returns them in row/column units! */
string = mode_line_string (w, area, &x, &y, &charpos,
&object, &dx, &dy, &width, &height);
row = (area == ON_MODE_LINE
? MATRIX_MODE_LINE_ROW (w->current_matrix)
: MATRIX_HEADER_LINE_ROW (w->current_matrix));
/* Find the glyph under the mouse pointer. */
if (row->mode_line_p && row->enabled_p)
{
glyph = row_start_glyph = row->glyphs[TEXT_AREA];
end = glyph + row->used[TEXT_AREA];
for (x0 = original_x_pixel;
glyph < end && x0 >= glyph->pixel_width;
++glyph)
x0 -= glyph->pixel_width;
if (glyph >= end)
glyph = NULL;
}
}
else
{
x -= WINDOW_LEFT_SCROLL_BAR_AREA_WIDTH (w);
/* Kludge alert: marginal_area_string takes X/Y in pixels, but
returns them in row/column units! */
string = marginal_area_string (w, area, &x, &y, &charpos,
&object, &dx, &dy, &width, &height);
}
Lisp_Object help = Qnil;
#ifdef HAVE_WINDOW_SYSTEM
if (IMAGEP (object))
{
Lisp_Object image_map, hotspot;
if ((image_map = Fplist_get (XCDR (object), QCmap),
!NILP (image_map))
&& (hotspot = find_hot_spot (image_map, dx, dy),
CONSP (hotspot))
&& (hotspot = XCDR (hotspot), CONSP (hotspot)))
{
Lisp_Object plist;
/* Could check XCAR (hotspot) to see if we enter/leave this hot-spot.
If so, we could look for mouse-enter, mouse-leave
properties in PLIST (and do something...). */
hotspot = XCDR (hotspot);
if (CONSP (hotspot)
&& (plist = XCAR (hotspot), CONSP (plist)))
{
pointer = Fplist_get (plist, Qpointer);
if (NILP (pointer))
pointer = Qhand;
help = Fplist_get (plist, Qhelp_echo);
if (!NILP (help))
{
help_echo_string = help;
XSETWINDOW (help_echo_window, w);
help_echo_object = w->contents;
help_echo_pos = charpos;
}
}
}
if (NILP (pointer))
pointer = Fplist_get (XCDR (object), QCpointer);
}
#endif /* HAVE_WINDOW_SYSTEM */
if (STRINGP (string))
pos = make_number (charpos);
/* Set the help text and mouse pointer. If the mouse is on a part
of the mode line without any text (e.g. past the right edge of
the mode line text), use the default help text and pointer. */
if (STRINGP (string) || area == ON_MODE_LINE)
{
/* Arrange to display the help by setting the global variables
help_echo_string, help_echo_object, and help_echo_pos. */
if (NILP (help))
{
if (STRINGP (string))
help = Fget_text_property (pos, Qhelp_echo, string);
if (!NILP (help))
{
help_echo_string = help;
XSETWINDOW (help_echo_window, w);
help_echo_object = string;
help_echo_pos = charpos;
}
else if (area == ON_MODE_LINE)
{
Lisp_Object default_help
= buffer_local_value (Qmode_line_default_help_echo,
w->contents);
if (STRINGP (default_help))
{
help_echo_string = default_help;
XSETWINDOW (help_echo_window, w);
help_echo_object = Qnil;
help_echo_pos = -1;
}
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* Change the mouse pointer according to what is under it. */
if (FRAME_WINDOW_P (f))
{
bool draggable = (! WINDOW_BOTTOMMOST_P (w)
|| minibuf_level
|| NILP (Vresize_mini_windows));
dpyinfo = FRAME_DISPLAY_INFO (f);
if (STRINGP (string))
{
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
if (NILP (pointer))
pointer = Fget_text_property (pos, Qpointer, string);
/* Change the mouse pointer according to what is under X/Y. */
if (NILP (pointer)
&& ((area == ON_MODE_LINE) || (area == ON_HEADER_LINE)))
{
Lisp_Object map;
map = Fget_text_property (pos, Qlocal_map, string);
if (!KEYMAPP (map))
map = Fget_text_property (pos, Qkeymap, string);
if (!KEYMAPP (map) && draggable)
cursor = dpyinfo->vertical_scroll_bar_cursor;
}
}
else if (draggable)
/* Default mode-line pointer. */
cursor = FRAME_DISPLAY_INFO (f)->vertical_scroll_bar_cursor;
}
#endif
}
/* Change the mouse face according to what is under X/Y. */
bool mouse_face_shown = false;
if (STRINGP (string))
{
mouse_face = Fget_text_property (pos, Qmouse_face, string);
if (!NILP (Vmouse_highlight) && !NILP (mouse_face)
&& ((area == ON_MODE_LINE) || (area == ON_HEADER_LINE))
&& glyph)
{
Lisp_Object b, e;
struct glyph * tmp_glyph;
int gpos;
int gseq_length;
int total_pixel_width;
ptrdiff_t begpos, endpos, ignore;
int vpos, hpos;
b = Fprevious_single_property_change (make_number (charpos + 1),
Qmouse_face, string, Qnil);
if (NILP (b))
begpos = 0;
else
begpos = XINT (b);
e = Fnext_single_property_change (pos, Qmouse_face, string, Qnil);
if (NILP (e))
endpos = SCHARS (string);
else
endpos = XINT (e);
/* Calculate the glyph position GPOS of GLYPH in the
displayed string, relative to the beginning of the
highlighted part of the string.
Note: GPOS is different from CHARPOS. CHARPOS is the
position of GLYPH in the internal string object. A mode
line string format has structures which are converted to
a flattened string by the Emacs Lisp interpreter. The
internal string is an element of those structures. The
displayed string is the flattened string. */
tmp_glyph = row_start_glyph;
while (tmp_glyph < glyph
&& (!(EQ (tmp_glyph->object, glyph->object)
&& begpos <= tmp_glyph->charpos
&& tmp_glyph->charpos < endpos)))
tmp_glyph++;
gpos = glyph - tmp_glyph;
/* Calculate the length GSEQ_LENGTH of the glyph sequence of
the highlighted part of the displayed string to which
GLYPH belongs. Note: GSEQ_LENGTH is different from
SCHARS (STRING), because the latter returns the length of
the internal string. */
for (tmp_glyph = row->glyphs[TEXT_AREA] + row->used[TEXT_AREA] - 1;
tmp_glyph > glyph
&& (!(EQ (tmp_glyph->object, glyph->object)
&& begpos <= tmp_glyph->charpos
&& tmp_glyph->charpos < endpos));
tmp_glyph--)
;
gseq_length = gpos + (tmp_glyph - glyph) + 1;
/* Calculate the total pixel width of all the glyphs between
the beginning of the highlighted area and GLYPH. */
total_pixel_width = 0;
for (tmp_glyph = glyph - gpos; tmp_glyph != glyph; tmp_glyph++)
total_pixel_width += tmp_glyph->pixel_width;
/* Pre calculation of re-rendering position. Note: X is in
column units here, after the call to mode_line_string or
marginal_area_string. */
hpos = x - gpos;
vpos = (area == ON_MODE_LINE
? (w->current_matrix)->nrows - 1
: 0);
/* If GLYPH's position is included in the region that is
already drawn in mouse face, we have nothing to do. */
if ( EQ (window, hlinfo->mouse_face_window)
&& (!row->reversed_p
? (hlinfo->mouse_face_beg_col <= hpos
&& hpos < hlinfo->mouse_face_end_col)
/* In R2L rows we swap BEG and END, see below. */
: (hlinfo->mouse_face_end_col <= hpos
&& hpos < hlinfo->mouse_face_beg_col))
&& hlinfo->mouse_face_beg_row == vpos )
return;
if (clear_mouse_face (hlinfo))
cursor = No_Cursor;
if (!row->reversed_p)
{
hlinfo->mouse_face_beg_col = hpos;
hlinfo->mouse_face_beg_x = original_x_pixel
- (total_pixel_width + dx);
hlinfo->mouse_face_end_col = hpos + gseq_length;
hlinfo->mouse_face_end_x = 0;
}
else
{
/* In R2L rows, show_mouse_face expects BEG and END
coordinates to be swapped. */
hlinfo->mouse_face_end_col = hpos;
hlinfo->mouse_face_end_x = original_x_pixel
- (total_pixel_width + dx);
hlinfo->mouse_face_beg_col = hpos + gseq_length;
hlinfo->mouse_face_beg_x = 0;
}
hlinfo->mouse_face_beg_row = vpos;
hlinfo->mouse_face_end_row = hlinfo->mouse_face_beg_row;
hlinfo->mouse_face_past_end = false;
hlinfo->mouse_face_window = window;
hlinfo->mouse_face_face_id = face_at_string_position (w, string,
charpos,
0, &ignore,
glyph->face_id,
true);
show_mouse_face (hlinfo, DRAW_MOUSE_FACE);
mouse_face_shown = true;
if (NILP (pointer))
pointer = Qhand;
}
}
/* If mouse-face doesn't need to be shown, clear any existing
mouse-face. */
if ((area == ON_MODE_LINE || area == ON_HEADER_LINE) && !mouse_face_shown)
clear_mouse_face (hlinfo);
define_frame_cursor1 (f, cursor, pointer);
}
/* EXPORT:
Take proper action when the mouse has moved to position X, Y on
frame F with regards to highlighting portions of display that have
mouse-face properties. Also de-highlight portions of display where
the mouse was before, set the mouse pointer shape as appropriate
for the mouse coordinates, and activate help echo (tooltips).
X and Y can be negative or out of range. */
void
note_mouse_highlight (struct frame *f, int x, int y)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
enum window_part part = ON_NOTHING;
Lisp_Object window;
struct window *w;
Cursor cursor = No_Cursor;
Lisp_Object pointer = Qnil; /* Takes precedence over cursor! */
struct buffer *b;
/* When a menu is active, don't highlight because this looks odd. */
#if defined (USE_X_TOOLKIT) || defined (USE_GTK) || defined (HAVE_NS) || defined (MSDOS)
if (popup_activated ())
return;
#endif
if (!f->glyphs_initialized_p
|| f->pointer_invisible)
return;
hlinfo->mouse_face_mouse_x = x;
hlinfo->mouse_face_mouse_y = y;
hlinfo->mouse_face_mouse_frame = f;
if (hlinfo->mouse_face_defer)
return;
/* Which window is that in? */
window = window_from_coordinates (f, x, y, &part, true);
/* If displaying active text in another window, clear that. */
if (! EQ (window, hlinfo->mouse_face_window)
/* Also clear if we move out of text area in same window. */
|| (!NILP (hlinfo->mouse_face_window)
&& !NILP (window)
&& part != ON_TEXT
&& part != ON_MODE_LINE
&& part != ON_HEADER_LINE))
clear_mouse_face (hlinfo);
/* Not on a window -> return. */
if (!WINDOWP (window))
return;
/* Reset help_echo_string. It will get recomputed below. */
help_echo_string = Qnil;
/* Convert to window-relative pixel coordinates. */
w = XWINDOW (window);
frame_to_window_pixel_xy (w, &x, &y);
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (USE_GTK) && ! defined (HAVE_NS)
/* Handle tool-bar window differently since it doesn't display a
buffer. */
if (EQ (window, f->tool_bar_window))
{
note_tool_bar_highlight (f, x, y);
return;
}
#endif
/* Mouse is on the mode, header line or margin? */
if (part == ON_MODE_LINE || part == ON_HEADER_LINE
|| part == ON_LEFT_MARGIN || part == ON_RIGHT_MARGIN)
{
note_mode_line_or_margin_highlight (window, x, y, part);
#ifdef HAVE_WINDOW_SYSTEM
if (part == ON_LEFT_MARGIN || part == ON_RIGHT_MARGIN)
{
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
/* Show non-text cursor (Bug#16647). */
goto set_cursor;
}
else
#endif
return;
}
#ifdef HAVE_WINDOW_SYSTEM
if (part == ON_VERTICAL_BORDER)
{
cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
help_echo_string = build_string ("drag-mouse-1: resize");
}
else if (part == ON_RIGHT_DIVIDER)
{
cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
help_echo_string = build_string ("drag-mouse-1: resize");
}
else if (part == ON_BOTTOM_DIVIDER)
if (! WINDOW_BOTTOMMOST_P (w)
|| minibuf_level
|| NILP (Vresize_mini_windows))
{
cursor = FRAME_X_OUTPUT (f)->vertical_drag_cursor;
help_echo_string = build_string ("drag-mouse-1: resize");
}
else
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
else if (part == ON_LEFT_FRINGE || part == ON_RIGHT_FRINGE
|| part == ON_VERTICAL_SCROLL_BAR
|| part == ON_HORIZONTAL_SCROLL_BAR)
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
else
cursor = FRAME_X_OUTPUT (f)->text_cursor;
#endif
/* Are we in a window whose display is up to date?
And verify the buffer's text has not changed. */
b = XBUFFER (w->contents);
if (part == ON_TEXT && w->window_end_valid && !window_outdated (w))
{
int hpos, vpos, dx, dy, area = LAST_AREA;
ptrdiff_t pos;
struct glyph *glyph;
Lisp_Object object;
Lisp_Object mouse_face = Qnil, position;
Lisp_Object *overlay_vec = NULL;
ptrdiff_t i, noverlays;
struct buffer *obuf;
ptrdiff_t obegv, ozv;
bool same_region;
/* Find the glyph under X/Y. */
glyph = x_y_to_hpos_vpos (w, x, y, &hpos, &vpos, &dx, &dy, &area);
#ifdef HAVE_WINDOW_SYSTEM
/* Look for :pointer property on image. */
if (glyph != NULL && glyph->type == IMAGE_GLYPH)
{
struct image *img = IMAGE_OPT_FROM_ID (f, glyph->u.img_id);
if (img != NULL && IMAGEP (img->spec))
{
Lisp_Object image_map, hotspot;
if ((image_map = Fplist_get (XCDR (img->spec), QCmap),
!NILP (image_map))
&& (hotspot = find_hot_spot (image_map,
glyph->slice.img.x + dx,
glyph->slice.img.y + dy),
CONSP (hotspot))
&& (hotspot = XCDR (hotspot), CONSP (hotspot)))
{
Lisp_Object plist;
/* Could check XCAR (hotspot) to see if we enter/leave
this hot-spot.
If so, we could look for mouse-enter, mouse-leave
properties in PLIST (and do something...). */
hotspot = XCDR (hotspot);
if (CONSP (hotspot)
&& (plist = XCAR (hotspot), CONSP (plist)))
{
pointer = Fplist_get (plist, Qpointer);
if (NILP (pointer))
pointer = Qhand;
help_echo_string = Fplist_get (plist, Qhelp_echo);
if (!NILP (help_echo_string))
{
help_echo_window = window;
help_echo_object = glyph->object;
help_echo_pos = glyph->charpos;
}
}
}
if (NILP (pointer))
pointer = Fplist_get (XCDR (img->spec), QCpointer);
}
}
#endif /* HAVE_WINDOW_SYSTEM */
/* Clear mouse face if X/Y not over text. */
if (glyph == NULL
|| area != TEXT_AREA
|| !MATRIX_ROW_DISPLAYS_TEXT_P (MATRIX_ROW (w->current_matrix, vpos))
/* Glyph's OBJECT is nil for glyphs inserted by the
display engine for its internal purposes, like truncation
and continuation glyphs and blanks beyond the end of
line's text on text terminals. If we are over such a
glyph, we are not over any text. */
|| NILP (glyph->object)
/* R2L rows have a stretch glyph at their front, which
stands for no text, whereas L2R rows have no glyphs at
all beyond the end of text. Treat such stretch glyphs
like we do with NULL glyphs in L2R rows. */
|| (MATRIX_ROW (w->current_matrix, vpos)->reversed_p
&& glyph == MATRIX_ROW_GLYPH_START (w->current_matrix, vpos)
&& glyph->type == STRETCH_GLYPH
&& glyph->avoid_cursor_p))
{
if (clear_mouse_face (hlinfo))
cursor = No_Cursor;
if (FRAME_WINDOW_P (f) && NILP (pointer))
{
#ifdef HAVE_WINDOW_SYSTEM
if (area != TEXT_AREA)
cursor = FRAME_X_OUTPUT (f)->nontext_cursor;
else
pointer = Vvoid_text_area_pointer;
#endif
}
goto set_cursor;
}
pos = glyph->charpos;
object = glyph->object;
if (!STRINGP (object) && !BUFFERP (object))
goto set_cursor;
/* If we get an out-of-range value, return now; avoid an error. */
if (BUFFERP (object) && pos > BUF_Z (b))
goto set_cursor;
/* Make the window's buffer temporarily current for
overlays_at and compute_char_face. */
obuf = current_buffer;
current_buffer = b;
obegv = BEGV;
ozv = ZV;
BEGV = BEG;
ZV = Z;
/* Is this char mouse-active or does it have help-echo? */
position = make_number (pos);
USE_SAFE_ALLOCA;
if (BUFFERP (object))
{
/* Put all the overlays we want in a vector in overlay_vec. */
GET_OVERLAYS_AT (pos, overlay_vec, noverlays, NULL, false);
/* Sort overlays into increasing priority order. */
noverlays = sort_overlays (overlay_vec, noverlays, w);
}
else
noverlays = 0;
if (NILP (Vmouse_highlight))
{
clear_mouse_face (hlinfo);
goto check_help_echo;
}
same_region = coords_in_mouse_face_p (w, hpos, vpos);
if (same_region)
cursor = No_Cursor;
/* Check mouse-face highlighting. */
if (! same_region
/* If there exists an overlay with mouse-face overlapping
the one we are currently highlighting, we have to
check if we enter the overlapping overlay, and then
highlight only that. */
|| (OVERLAYP (hlinfo->mouse_face_overlay)
&& mouse_face_overlay_overlaps (hlinfo->mouse_face_overlay)))
{
/* Find the highest priority overlay with a mouse-face. */
Lisp_Object overlay = Qnil;
for (i = noverlays - 1; i >= 0 && NILP (overlay); --i)
{
mouse_face = Foverlay_get (overlay_vec[i], Qmouse_face);
if (!NILP (mouse_face))
overlay = overlay_vec[i];
}
/* If we're highlighting the same overlay as before, there's
no need to do that again. */
if (!NILP (overlay) && EQ (overlay, hlinfo->mouse_face_overlay))
goto check_help_echo;
hlinfo->mouse_face_overlay = overlay;
/* Clear the display of the old active region, if any. */
if (clear_mouse_face (hlinfo))
cursor = No_Cursor;
/* If no overlay applies, get a text property. */
if (NILP (overlay))
mouse_face = Fget_text_property (position, Qmouse_face, object);
/* Next, compute the bounds of the mouse highlighting and
display it. */
if (!NILP (mouse_face) && STRINGP (object))
{
/* The mouse-highlighting comes from a display string
with a mouse-face. */
Lisp_Object s, e;
ptrdiff_t ignore;
s = Fprevious_single_property_change
(make_number (pos + 1), Qmouse_face, object, Qnil);
e = Fnext_single_property_change
(position, Qmouse_face, object, Qnil);
if (NILP (s))
s = make_number (0);
if (NILP (e))
e = make_number (SCHARS (object));
mouse_face_from_string_pos (w, hlinfo, object,
XINT (s), XINT (e));
hlinfo->mouse_face_past_end = false;
hlinfo->mouse_face_window = window;
hlinfo->mouse_face_face_id
= face_at_string_position (w, object, pos, 0, &ignore,
glyph->face_id, true);
show_mouse_face (hlinfo, DRAW_MOUSE_FACE);
cursor = No_Cursor;
}
else
{
/* The mouse-highlighting, if any, comes from an overlay
or text property in the buffer. */
Lisp_Object buffer UNINIT;
Lisp_Object disp_string UNINIT;
if (STRINGP (object))
{
/* If we are on a display string with no mouse-face,
check if the text under it has one. */
struct glyph_row *r = MATRIX_ROW (w->current_matrix, vpos);
ptrdiff_t start = MATRIX_ROW_START_CHARPOS (r);
pos = string_buffer_position (object, start);
if (pos > 0)
{
mouse_face = get_char_property_and_overlay
(make_number (pos), Qmouse_face, w->contents, &overlay);
buffer = w->contents;
disp_string = object;
}
}
else
{
buffer = object;
disp_string = Qnil;
}
if (!NILP (mouse_face))
{
Lisp_Object before, after;
Lisp_Object before_string, after_string;
/* To correctly find the limits of mouse highlight
in a bidi-reordered buffer, we must not use the
optimization of limiting the search in
previous-single-property-change and
next-single-property-change, because
rows_from_pos_range needs the real start and end
positions to DTRT in this case. That's because
the first row visible in a window does not
necessarily display the character whose position
is the smallest. */
Lisp_Object lim1
= NILP (BVAR (XBUFFER (buffer), bidi_display_reordering))
? Fmarker_position (w->start)
: Qnil;
Lisp_Object lim2
= NILP (BVAR (XBUFFER (buffer), bidi_display_reordering))
? make_number (BUF_Z (XBUFFER (buffer))
- w->window_end_pos)
: Qnil;
if (NILP (overlay))
{
/* Handle the text property case. */
before = Fprevious_single_property_change
(make_number (pos + 1), Qmouse_face, buffer, lim1);
after = Fnext_single_property_change
(make_number (pos), Qmouse_face, buffer, lim2);
before_string = after_string = Qnil;
}
else
{
/* Handle the overlay case. */
before = Foverlay_start (overlay);
after = Foverlay_end (overlay);
before_string = Foverlay_get (overlay, Qbefore_string);
after_string = Foverlay_get (overlay, Qafter_string);
if (!STRINGP (before_string)) before_string = Qnil;
if (!STRINGP (after_string)) after_string = Qnil;
}
mouse_face_from_buffer_pos (window, hlinfo, pos,
NILP (before)
? 1
: XFASTINT (before),
NILP (after)
? BUF_Z (XBUFFER (buffer))
: XFASTINT (after),
before_string, after_string,
disp_string);
cursor = No_Cursor;
}
}
}
check_help_echo:
/* Look for a `help-echo' property. */
if (NILP (help_echo_string)) {
Lisp_Object help, overlay;
/* Check overlays first. */
help = overlay = Qnil;
for (i = noverlays - 1; i >= 0 && NILP (help); --i)
{
overlay = overlay_vec[i];
help = Foverlay_get (overlay, Qhelp_echo);
}
if (!NILP (help))
{
help_echo_string = help;
help_echo_window = window;
help_echo_object = overlay;
help_echo_pos = pos;
}
else
{
Lisp_Object obj = glyph->object;
ptrdiff_t charpos = glyph->charpos;
/* Try text properties. */
if (STRINGP (obj)
&& charpos >= 0
&& charpos < SCHARS (obj))
{
help = Fget_text_property (make_number (charpos),
Qhelp_echo, obj);
if (NILP (help))
{
/* If the string itself doesn't specify a help-echo,
see if the buffer text ``under'' it does. */
struct glyph_row *r
= MATRIX_ROW (w->current_matrix, vpos);
ptrdiff_t start = MATRIX_ROW_START_CHARPOS (r);
ptrdiff_t p = string_buffer_position (obj, start);
if (p > 0)
{
help = Fget_char_property (make_number (p),
Qhelp_echo, w->contents);
if (!NILP (help))
{
charpos = p;
obj = w->contents;
}
}
}
}
else if (BUFFERP (obj)
&& charpos >= BEGV
&& charpos < ZV)
help = Fget_text_property (make_number (charpos), Qhelp_echo,
obj);
if (!NILP (help))
{
help_echo_string = help;
help_echo_window = window;
help_echo_object = obj;
help_echo_pos = charpos;
}
}
}
#ifdef HAVE_WINDOW_SYSTEM
/* Look for a `pointer' property. */
if (FRAME_WINDOW_P (f) && NILP (pointer))
{
/* Check overlays first. */
for (i = noverlays - 1; i >= 0 && NILP (pointer); --i)
pointer = Foverlay_get (overlay_vec[i], Qpointer);
if (NILP (pointer))
{
Lisp_Object obj = glyph->object;
ptrdiff_t charpos = glyph->charpos;
/* Try text properties. */
if (STRINGP (obj)
&& charpos >= 0
&& charpos < SCHARS (obj))
{
pointer = Fget_text_property (make_number (charpos),
Qpointer, obj);
if (NILP (pointer))
{
/* If the string itself doesn't specify a pointer,
see if the buffer text ``under'' it does. */
struct glyph_row *r
= MATRIX_ROW (w->current_matrix, vpos);
ptrdiff_t start = MATRIX_ROW_START_CHARPOS (r);
ptrdiff_t p = string_buffer_position (obj, start);
if (p > 0)
pointer = Fget_char_property (make_number (p),
Qpointer, w->contents);
}
}
else if (BUFFERP (obj)
&& charpos >= BEGV
&& charpos < ZV)
pointer = Fget_text_property (make_number (charpos),
Qpointer, obj);
}
}
#endif /* HAVE_WINDOW_SYSTEM */
BEGV = obegv;
ZV = ozv;
current_buffer = obuf;
SAFE_FREE ();
}
set_cursor:
define_frame_cursor1 (f, cursor, pointer);
}
/* EXPORT for RIF:
Clear any mouse-face on window W. This function is part of the
redisplay interface, and is called from try_window_id and similar
functions to ensure the mouse-highlight is off. */
void
x_clear_window_mouse_face (struct window *w)
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (XFRAME (w->frame));
Lisp_Object window;
block_input ();
XSETWINDOW (window, w);
if (EQ (window, hlinfo->mouse_face_window))
clear_mouse_face (hlinfo);
unblock_input ();
}
/* EXPORT:
Just discard the mouse face information for frame F, if any.
This is used when the size of F is changed. */
void
cancel_mouse_face (struct frame *f)
{
Lisp_Object window;
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
window = hlinfo->mouse_face_window;
if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f)
reset_mouse_highlight (hlinfo);
}
\f
/***********************************************************************
Exposure Events
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
/* Redraw the part of glyph row area AREA of glyph row ROW on window W
which intersects rectangle R. R is in window-relative coordinates. */
static void
expose_area (struct window *w, struct glyph_row *row, XRectangle *r,
enum glyph_row_area area)
{
struct glyph *first = row->glyphs[area];
struct glyph *end = row->glyphs[area] + row->used[area];
struct glyph *last;
int first_x, start_x, x;
if (area == TEXT_AREA && row->fill_line_p)
/* If row extends face to end of line write the whole line. */
draw_glyphs (w, 0, row, area,
0, row->used[area],
DRAW_NORMAL_TEXT, 0);
else
{
/* Set START_X to the window-relative start position for drawing glyphs of
AREA. The first glyph of the text area can be partially visible.
The first glyphs of other areas cannot. */
start_x = window_box_left_offset (w, area);
x = start_x;
if (area == TEXT_AREA)
x += row->x;
/* Find the first glyph that must be redrawn. */
while (first < end
&& x + first->pixel_width < r->x)
{
x += first->pixel_width;
++first;
}
/* Find the last one. */
last = first;
first_x = x;
/* Use a signed int intermediate value to avoid catastrophic
failures due to comparison between signed and unsigned, when
x is negative (can happen for wide images that are hscrolled). */
int r_end = r->x + r->width;
while (last < end && x < r_end)
{
x += last->pixel_width;
++last;
}
/* Repaint. */
if (last > first)
draw_glyphs (w, first_x - start_x, row, area,
first - row->glyphs[area], last - row->glyphs[area],
DRAW_NORMAL_TEXT, 0);
}
}
/* Redraw the parts of the glyph row ROW on window W intersecting
rectangle R. R is in window-relative coordinates. Value is
true if mouse-face was overwritten. */
static bool
expose_line (struct window *w, struct glyph_row *row, XRectangle *r)
{
eassert (row->enabled_p);
if (row->mode_line_p || w->pseudo_window_p)
draw_glyphs (w, 0, row, TEXT_AREA,
0, row->used[TEXT_AREA],
DRAW_NORMAL_TEXT, 0);
else
{
if (row->used[LEFT_MARGIN_AREA])
expose_area (w, row, r, LEFT_MARGIN_AREA);
if (row->used[TEXT_AREA])
expose_area (w, row, r, TEXT_AREA);
if (row->used[RIGHT_MARGIN_AREA])
expose_area (w, row, r, RIGHT_MARGIN_AREA);
draw_row_fringe_bitmaps (w, row);
}
return row->mouse_face_p;
}
/* Redraw those parts of glyphs rows during expose event handling that
overlap other rows. Redrawing of an exposed line writes over parts
of lines overlapping that exposed line; this function fixes that.
W is the window being exposed. FIRST_OVERLAPPING_ROW is the first
row in W's current matrix that is exposed and overlaps other rows.
LAST_OVERLAPPING_ROW is the last such row. */
static void
expose_overlaps (struct window *w,
struct glyph_row *first_overlapping_row,
struct glyph_row *last_overlapping_row,
XRectangle *r)
{
struct glyph_row *row;
for (row = first_overlapping_row; row <= last_overlapping_row; ++row)
if (row->overlapping_p)
{
eassert (row->enabled_p && !row->mode_line_p);
row->clip = r;
if (row->used[LEFT_MARGIN_AREA])
x_fix_overlapping_area (w, row, LEFT_MARGIN_AREA, OVERLAPS_BOTH);
if (row->used[TEXT_AREA])
x_fix_overlapping_area (w, row, TEXT_AREA, OVERLAPS_BOTH);
if (row->used[RIGHT_MARGIN_AREA])
x_fix_overlapping_area (w, row, RIGHT_MARGIN_AREA, OVERLAPS_BOTH);
row->clip = NULL;
}
}
/* Return true if W's cursor intersects rectangle R. */
static bool
phys_cursor_in_rect_p (struct window *w, XRectangle *r)
{
XRectangle cr, result;
struct glyph *cursor_glyph;
struct glyph_row *row;
if (w->phys_cursor.vpos >= 0
&& w->phys_cursor.vpos < w->current_matrix->nrows
&& (row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos),
row->enabled_p)
&& row->cursor_in_fringe_p)
{
/* Cursor is in the fringe. */
cr.x = window_box_right_offset (w,
(WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? RIGHT_MARGIN_AREA
: TEXT_AREA));
cr.y = row->y;
cr.width = WINDOW_RIGHT_FRINGE_WIDTH (w);
cr.height = row->height;
return x_intersect_rectangles (&cr, r, &result);
}
cursor_glyph = get_phys_cursor_glyph (w);
if (cursor_glyph)
{
/* r is relative to W's box, but w->phys_cursor.x is relative
to left edge of W's TEXT area. Adjust it. */
cr.x = window_box_left_offset (w, TEXT_AREA) + w->phys_cursor.x;
cr.y = w->phys_cursor.y;
cr.width = cursor_glyph->pixel_width;
cr.height = w->phys_cursor_height;
/* ++KFS: W32 version used W32-specific IntersectRect here, but
I assume the effect is the same -- and this is portable. */
return x_intersect_rectangles (&cr, r, &result);
}
/* If we don't understand the format, pretend we're not in the hot-spot. */
return false;
}
/* EXPORT:
Draw a vertical window border to the right of window W if W doesn't
have vertical scroll bars. */
void
x_draw_vertical_border (struct window *w)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
/* We could do better, if we knew what type of scroll-bar the adjacent
windows (on either side) have... But we don't :-(
However, I think this works ok. ++KFS 2003-04-25 */
/* Redraw borders between horizontally adjacent windows. Don't
do it for frames with vertical scroll bars because either the
right scroll bar of a window, or the left scroll bar of its
neighbor will suffice as a border. */
if (FRAME_HAS_VERTICAL_SCROLL_BARS (f) || FRAME_RIGHT_DIVIDER_WIDTH (f))
return;
/* Note: It is necessary to redraw both the left and the right
borders, for when only this single window W is being
redisplayed. */
if (!WINDOW_RIGHTMOST_P (w)
&& !WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_RIGHT (w))
{
int x0, x1, y0, y1;
window_box_edges (w, &x0, &y0, &x1, &y1);
y1 -= 1;
if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0)
x1 -= 1;
FRAME_RIF (f)->draw_vertical_window_border (w, x1, y0, y1);
}
if (!WINDOW_LEFTMOST_P (w)
&& !WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w))
{
int x0, x1, y0, y1;
window_box_edges (w, &x0, &y0, &x1, &y1);
y1 -= 1;
if (WINDOW_LEFT_FRINGE_WIDTH (w) == 0)
x0 -= 1;
FRAME_RIF (f)->draw_vertical_window_border (w, x0, y0, y1);
}
}
/* Draw window dividers for window W. */
void
x_draw_right_divider (struct window *w)
{
struct frame *f = WINDOW_XFRAME (w);
if (w->mini || w->pseudo_window_p)
return;
else if (WINDOW_RIGHT_DIVIDER_WIDTH (w))
{
int x0 = WINDOW_RIGHT_EDGE_X (w) - WINDOW_RIGHT_DIVIDER_WIDTH (w);
int x1 = WINDOW_RIGHT_EDGE_X (w);
int y0 = WINDOW_TOP_EDGE_Y (w);
/* The bottom divider prevails. */
int y1 = WINDOW_BOTTOM_EDGE_Y (w) - WINDOW_BOTTOM_DIVIDER_WIDTH (w);
FRAME_RIF (f)->draw_window_divider (w, x0, x1, y0, y1);
}
}
static void
x_draw_bottom_divider (struct window *w)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
if (w->mini || w->pseudo_window_p)
return;
else if (WINDOW_BOTTOM_DIVIDER_WIDTH (w))
{
int x0 = WINDOW_LEFT_EDGE_X (w);
int x1 = WINDOW_RIGHT_EDGE_X (w);
int y0 = WINDOW_BOTTOM_EDGE_Y (w) - WINDOW_BOTTOM_DIVIDER_WIDTH (w);
int y1 = WINDOW_BOTTOM_EDGE_Y (w);
FRAME_RIF (f)->draw_window_divider (w, x0, x1, y0, y1);
}
}
/* Redraw the part of window W intersection rectangle FR. Pixel
coordinates in FR are frame-relative. Call this function with
input blocked. Value is true if the exposure overwrites
mouse-face. */
static bool
expose_window (struct window *w, XRectangle *fr)
{
struct frame *f = XFRAME (w->frame);
XRectangle wr, r;
bool mouse_face_overwritten_p = false;
/* If window is not yet fully initialized, do nothing. This can
happen when toolkit scroll bars are used and a window is split.
Reconfiguring the scroll bar will generate an expose for a newly
created window. */
if (w->current_matrix == NULL)
return false;
/* When we're currently updating the window, display and current
matrix usually don't agree. Arrange for a thorough display
later. */
if (w->must_be_updated_p)
{
SET_FRAME_GARBAGED (f);
return false;
}
/* Frame-relative pixel rectangle of W. */
wr.x = WINDOW_LEFT_EDGE_X (w);
wr.y = WINDOW_TOP_EDGE_Y (w);
wr.width = WINDOW_PIXEL_WIDTH (w);
wr.height = WINDOW_PIXEL_HEIGHT (w);
if (x_intersect_rectangles (fr, &wr, &r))
{
int yb = window_text_bottom_y (w);
struct glyph_row *row;
struct glyph_row *first_overlapping_row, *last_overlapping_row;
TRACE ((stderr, "expose_window (%d, %d, %d, %d)\n",
r.x, r.y, r.width, r.height));
/* Convert to window coordinates. */
r.x -= WINDOW_LEFT_EDGE_X (w);
r.y -= WINDOW_TOP_EDGE_Y (w);
/* Turn off the cursor. */
bool cursor_cleared_p = (!w->pseudo_window_p
&& phys_cursor_in_rect_p (w, &r));
if (cursor_cleared_p)
x_clear_cursor (w);
/* If the row containing the cursor extends face to end of line,
then expose_area might overwrite the cursor outside the
rectangle and thus notice_overwritten_cursor might clear
w->phys_cursor_on_p. We remember the original value and
check later if it is changed. */
bool phys_cursor_on_p = w->phys_cursor_on_p;
/* Use a signed int intermediate value to avoid catastrophic
failures due to comparison between signed and unsigned, when
y0 or y1 is negative (can happen for tall images). */
int r_bottom = r.y + r.height;
/* Update lines intersecting rectangle R. */
first_overlapping_row = last_overlapping_row = NULL;
for (row = w->current_matrix->rows;
row->enabled_p;
++row)
{
int y0 = row->y;
int y1 = MATRIX_ROW_BOTTOM_Y (row);
if ((y0 >= r.y && y0 < r_bottom)
|| (y1 > r.y && y1 < r_bottom)
|| (r.y >= y0 && r.y < y1)
|| (r_bottom > y0 && r_bottom < y1))
{
/* A header line may be overlapping, but there is no need
to fix overlapping areas for them. KFS 2005-02-12 */
if (row->overlapping_p && !row->mode_line_p)
{
if (first_overlapping_row == NULL)
first_overlapping_row = row;
last_overlapping_row = row;
}
row->clip = fr;
if (expose_line (w, row, &r))
mouse_face_overwritten_p = true;
row->clip = NULL;
}
else if (row->overlapping_p)
{
/* We must redraw a row overlapping the exposed area. */
if (y0 < r.y
? y0 + row->phys_height > r.y
: y0 + row->ascent - row->phys_ascent < r.y +r.height)
{
if (first_overlapping_row == NULL)
first_overlapping_row = row;
last_overlapping_row = row;
}
}
if (y1 >= yb)
break;
}
/* Display the mode line if there is one. */
if (WINDOW_WANTS_MODELINE_P (w)
&& (row = MATRIX_MODE_LINE_ROW (w->current_matrix),
row->enabled_p)
&& row->y < r_bottom)
{
if (expose_line (w, row, &r))
mouse_face_overwritten_p = true;
}
if (!w->pseudo_window_p)
{
/* Fix the display of overlapping rows. */
if (first_overlapping_row)
expose_overlaps (w, first_overlapping_row, last_overlapping_row,
fr);
/* Draw border between windows. */
if (WINDOW_RIGHT_DIVIDER_WIDTH (w))
x_draw_right_divider (w);
else
x_draw_vertical_border (w);
if (WINDOW_BOTTOM_DIVIDER_WIDTH (w))
x_draw_bottom_divider (w);
/* Turn the cursor on again. */
if (cursor_cleared_p
|| (phys_cursor_on_p && !w->phys_cursor_on_p))
update_window_cursor (w, true);
}
}
return mouse_face_overwritten_p;
}
/* Redraw (parts) of all windows in the window tree rooted at W that
intersect R. R contains frame pixel coordinates. Value is
true if the exposure overwrites mouse-face. */
static bool
expose_window_tree (struct window *w, XRectangle *r)
{
struct frame *f = XFRAME (w->frame);
bool mouse_face_overwritten_p = false;
while (w && !FRAME_GARBAGED_P (f))
{
mouse_face_overwritten_p
|= (WINDOWP (w->contents)
? expose_window_tree (XWINDOW (w->contents), r)
: expose_window (w, r));
w = NILP (w->next) ? NULL : XWINDOW (w->next);
}
return mouse_face_overwritten_p;
}
/* EXPORT:
Redisplay an exposed area of frame F. X and Y are the upper-left
corner of the exposed rectangle. W and H are width and height of
the exposed area. All are pixel values. W or H zero means redraw
the entire frame. */
void
expose_frame (struct frame *f, int x, int y, int w, int h)
{
XRectangle r;
bool mouse_face_overwritten_p = false;
TRACE ((stderr, "expose_frame "));
/* No need to redraw if frame will be redrawn soon. */
if (FRAME_GARBAGED_P (f))
{
TRACE ((stderr, " garbaged\n"));
return;
}
/* If basic faces haven't been realized yet, there is no point in
trying to redraw anything. This can happen when we get an expose
event while Emacs is starting, e.g. by moving another window. */
if (FRAME_FACE_CACHE (f) == NULL
|| FRAME_FACE_CACHE (f)->used < BASIC_FACE_ID_SENTINEL)
{
TRACE ((stderr, " no faces\n"));
return;
}
if (w == 0 || h == 0)
{
r.x = r.y = 0;
r.width = FRAME_TEXT_WIDTH (f);
r.height = FRAME_TEXT_HEIGHT (f);
}
else
{
r.x = x;
r.y = y;
r.width = w;
r.height = h;
}
TRACE ((stderr, "(%d, %d, %d, %d)\n", r.x, r.y, r.width, r.height));
mouse_face_overwritten_p = expose_window_tree (XWINDOW (f->root_window), &r);
#if ! defined (USE_GTK) && ! defined (HAVE_NS)
if (WINDOWP (f->tool_bar_window))
mouse_face_overwritten_p
|= expose_window (XWINDOW (f->tool_bar_window), &r);
#endif
#ifdef HAVE_X_WINDOWS
#ifndef MSDOS
#if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
if (WINDOWP (f->menu_bar_window))
mouse_face_overwritten_p
|= expose_window (XWINDOW (f->menu_bar_window), &r);
#endif /* not USE_X_TOOLKIT and not USE_GTK */
#endif
#endif
/* Some window managers support a focus-follows-mouse style with
delayed raising of frames. Imagine a partially obscured frame,
and moving the mouse into partially obscured mouse-face on that
frame. The visible part of the mouse-face will be highlighted,
then the WM raises the obscured frame. With at least one WM, KDE
2.1, Emacs is not getting any event for the raising of the frame
(even tried with SubstructureRedirectMask), only Expose events.
These expose events will draw text normally, i.e. not
highlighted. Which means we must redo the highlight here.
Subsume it under ``we love X''. --gerd 2001-08-15 */
/* Included in Windows version because Windows most likely does not
do the right thing if any third party tool offers
focus-follows-mouse with delayed raise. --jason 2001-10-12 */
if (mouse_face_overwritten_p && !FRAME_GARBAGED_P (f))
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
if (f == hlinfo->mouse_face_mouse_frame)
{
int mouse_x = hlinfo->mouse_face_mouse_x;
int mouse_y = hlinfo->mouse_face_mouse_y;
clear_mouse_face (hlinfo);
note_mouse_highlight (f, mouse_x, mouse_y);
}
}
}
/* EXPORT:
Determine the intersection of two rectangles R1 and R2. Return
the intersection in *RESULT. Value is true if RESULT is not
empty. */
bool
x_intersect_rectangles (XRectangle *r1, XRectangle *r2, XRectangle *result)
{
XRectangle *left, *right;
XRectangle *upper, *lower;
bool intersection_p = false;
/* Rearrange so that R1 is the left-most rectangle. */
if (r1->x < r2->x)
left = r1, right = r2;
else
left = r2, right = r1;
/* X0 of the intersection is right.x0, if this is inside R1,
otherwise there is no intersection. */
if (right->x <= left->x + left->width)
{
result->x = right->x;
/* The right end of the intersection is the minimum of
the right ends of left and right. */
result->width = (min (left->x + left->width, right->x + right->width)
- result->x);
/* Same game for Y. */
if (r1->y < r2->y)
upper = r1, lower = r2;
else
upper = r2, lower = r1;
/* The upper end of the intersection is lower.y0, if this is inside
of upper. Otherwise, there is no intersection. */
if (lower->y <= upper->y + upper->height)
{
result->y = lower->y;
/* The lower end of the intersection is the minimum of the lower
ends of upper and lower. */
result->height = (min (lower->y + lower->height,
upper->y + upper->height)
- result->y);
intersection_p = true;
}
}
return intersection_p;
}
#endif /* HAVE_WINDOW_SYSTEM */
\f
/***********************************************************************
Initialization
***********************************************************************/
void
syms_of_xdisp (void)
{
Vwith_echo_area_save_vector = Qnil;
staticpro (&Vwith_echo_area_save_vector);
Vmessage_stack = Qnil;
staticpro (&Vmessage_stack);
/* Non-nil means don't actually do any redisplay. */
DEFSYM (Qinhibit_redisplay, "inhibit-redisplay");
DEFSYM (Qredisplay_internal_xC_functionx, "redisplay_internal (C function)");
DEFVAR_BOOL("inhibit-message", inhibit_message,
doc: /* Non-nil means calls to `message' are not displayed.
They are still logged to the *Messages* buffer. */);
inhibit_message = 0;
message_dolog_marker1 = Fmake_marker ();
staticpro (&message_dolog_marker1);
message_dolog_marker2 = Fmake_marker ();
staticpro (&message_dolog_marker2);
message_dolog_marker3 = Fmake_marker ();
staticpro (&message_dolog_marker3);
defsubr (&Sset_buffer_redisplay);
#ifdef GLYPH_DEBUG
defsubr (&Sdump_frame_glyph_matrix);
defsubr (&Sdump_glyph_matrix);
defsubr (&Sdump_glyph_row);
defsubr (&Sdump_tool_bar_row);
defsubr (&Strace_redisplay);
defsubr (&Strace_to_stderr);
#endif
#ifdef HAVE_WINDOW_SYSTEM
defsubr (&Stool_bar_height);
defsubr (&Slookup_image_map);
#endif
defsubr (&Sline_pixel_height);
defsubr (&Sformat_mode_line);
defsubr (&Sinvisible_p);
defsubr (&Scurrent_bidi_paragraph_direction);
defsubr (&Swindow_text_pixel_size);
defsubr (&Smove_point_visually);
defsubr (&Sbidi_find_overridden_directionality);
DEFSYM (Qmenu_bar_update_hook, "menu-bar-update-hook");
DEFSYM (Qoverriding_terminal_local_map, "overriding-terminal-local-map");
DEFSYM (Qoverriding_local_map, "overriding-local-map");
DEFSYM (Qwindow_scroll_functions, "window-scroll-functions");
DEFSYM (Qwindow_text_change_functions, "window-text-change-functions");
DEFSYM (Qredisplay_end_trigger_functions, "redisplay-end-trigger-functions");
DEFSYM (Qinhibit_point_motion_hooks, "inhibit-point-motion-hooks");
DEFSYM (Qeval, "eval");
DEFSYM (QCdata, ":data");
/* Names of text properties relevant for redisplay. */
DEFSYM (Qdisplay, "display");
DEFSYM (Qspace_width, "space-width");
DEFSYM (Qraise, "raise");
DEFSYM (Qslice, "slice");
DEFSYM (Qspace, "space");
DEFSYM (Qmargin, "margin");
DEFSYM (Qpointer, "pointer");
DEFSYM (Qleft_margin, "left-margin");
DEFSYM (Qright_margin, "right-margin");
DEFSYM (Qcenter, "center");
DEFSYM (Qline_height, "line-height");
DEFSYM (QCalign_to, ":align-to");
DEFSYM (QCrelative_width, ":relative-width");
DEFSYM (QCrelative_height, ":relative-height");
DEFSYM (QCeval, ":eval");
DEFSYM (QCpropertize, ":propertize");
DEFSYM (QCfile, ":file");
DEFSYM (Qfontified, "fontified");
DEFSYM (Qfontification_functions, "fontification-functions");
/* Name of the face used to highlight trailing whitespace. */
DEFSYM (Qtrailing_whitespace, "trailing-whitespace");
/* Name and number of the face used to highlight escape glyphs. */
DEFSYM (Qescape_glyph, "escape-glyph");
/* Name and number of the face used to highlight non-breaking
spaces/hyphens. */
DEFSYM (Qnobreak_space, "nobreak-space");
DEFSYM (Qnobreak_hyphen, "nobreak-hyphen");
/* The symbol 'image' which is the car of the lists used to represent
images in Lisp. Also a tool bar style. */
DEFSYM (Qimage, "image");
/* Tool bar styles. */
DEFSYM (Qtext, "text");
DEFSYM (Qboth, "both");
DEFSYM (Qboth_horiz, "both-horiz");
DEFSYM (Qtext_image_horiz, "text-image-horiz");
/* The image map types. */
DEFSYM (QCmap, ":map");
DEFSYM (QCpointer, ":pointer");
DEFSYM (Qrect, "rect");
DEFSYM (Qcircle, "circle");
DEFSYM (Qpoly, "poly");
DEFSYM (Qinhibit_menubar_update, "inhibit-menubar-update");
DEFSYM (Qgrow_only, "grow-only");
DEFSYM (Qinhibit_eval_during_redisplay, "inhibit-eval-during-redisplay");
DEFSYM (Qposition, "position");
DEFSYM (Qbuffer_position, "buffer-position");
DEFSYM (Qobject, "object");
/* Cursor shapes. */
DEFSYM (Qbar, "bar");
DEFSYM (Qhbar, "hbar");
DEFSYM (Qbox, "box");
DEFSYM (Qhollow, "hollow");
/* Pointer shapes. */
DEFSYM (Qhand, "hand");
DEFSYM (Qarrow, "arrow");
/* also Qtext */
DEFSYM (Qdragging, "dragging");
DEFSYM (Qinhibit_free_realized_faces, "inhibit-free-realized-faces");
list_of_error = list1 (list2 (Qerror, Qvoid_variable));
staticpro (&list_of_error);
/* Values of those variables at last redisplay are stored as
properties on 'overlay-arrow-position' symbol. However, if
Voverlay_arrow_position is a marker, last-arrow-position is its
numerical position. */
DEFSYM (Qlast_arrow_position, "last-arrow-position");
DEFSYM (Qlast_arrow_string, "last-arrow-string");
/* Alternative overlay-arrow-string and overlay-arrow-bitmap
properties on a symbol in overlay-arrow-variable-list. */
DEFSYM (Qoverlay_arrow_string, "overlay-arrow-string");
DEFSYM (Qoverlay_arrow_bitmap, "overlay-arrow-bitmap");
echo_buffer[0] = echo_buffer[1] = Qnil;
staticpro (&echo_buffer[0]);
staticpro (&echo_buffer[1]);
echo_area_buffer[0] = echo_area_buffer[1] = Qnil;
staticpro (&echo_area_buffer[0]);
staticpro (&echo_area_buffer[1]);
Vmessages_buffer_name = build_pure_c_string ("*Messages*");
staticpro (&Vmessages_buffer_name);
mode_line_proptrans_alist = Qnil;
staticpro (&mode_line_proptrans_alist);
mode_line_string_list = Qnil;
staticpro (&mode_line_string_list);
mode_line_string_face = Qnil;
staticpro (&mode_line_string_face);
mode_line_string_face_prop = Qnil;
staticpro (&mode_line_string_face_prop);
Vmode_line_unwind_vector = Qnil;
staticpro (&Vmode_line_unwind_vector);
DEFSYM (Qmode_line_default_help_echo, "mode-line-default-help-echo");
help_echo_string = Qnil;
staticpro (&help_echo_string);
help_echo_object = Qnil;
staticpro (&help_echo_object);
help_echo_window = Qnil;
staticpro (&help_echo_window);
previous_help_echo_string = Qnil;
staticpro (&previous_help_echo_string);
help_echo_pos = -1;
DEFSYM (Qright_to_left, "right-to-left");
DEFSYM (Qleft_to_right, "left-to-right");
defsubr (&Sbidi_resolved_levels);
#ifdef HAVE_WINDOW_SYSTEM
DEFVAR_BOOL ("x-stretch-cursor", x_stretch_cursor_p,
doc: /* Non-nil means draw block cursor as wide as the glyph under it.
For example, if a block cursor is over a tab, it will be drawn as
wide as that tab on the display. */);
x_stretch_cursor_p = 0;
#endif
DEFVAR_LISP ("show-trailing-whitespace", Vshow_trailing_whitespace,
doc: /* Non-nil means highlight trailing whitespace.
The face used for trailing whitespace is `trailing-whitespace'. */);
Vshow_trailing_whitespace = Qnil;
DEFVAR_LISP ("nobreak-char-display", Vnobreak_char_display,
doc: /* Control highlighting of non-ASCII space and hyphen chars.
If the value is t, Emacs highlights non-ASCII chars which have the
same appearance as an ASCII space or hyphen, using the `nobreak-space'
or `nobreak-hyphen' face respectively.
U+00A0 (no-break space), U+00AD (soft hyphen), U+2010 (hyphen), and
U+2011 (non-breaking hyphen) are affected.
Any other non-nil value means to display these characters as a escape
glyph followed by an ordinary space or hyphen.
A value of nil means no special handling of these characters. */);
Vnobreak_char_display = Qt;
DEFVAR_LISP ("void-text-area-pointer", Vvoid_text_area_pointer,
doc: /* The pointer shape to show in void text areas.
A value of nil means to show the text pointer. Other options are
`arrow', `text', `hand', `vdrag', `hdrag', `nhdrag', `modeline', and
`hourglass'. */);
Vvoid_text_area_pointer = Qarrow;
DEFVAR_LISP ("inhibit-redisplay", Vinhibit_redisplay,
doc: /* Non-nil means don't actually do any redisplay.
This is used for internal purposes. */);
Vinhibit_redisplay = Qnil;
DEFVAR_LISP ("global-mode-string", Vglobal_mode_string,
doc: /* String (or mode line construct) included (normally) in `mode-line-format'. */);
Vglobal_mode_string = Qnil;
DEFVAR_LISP ("overlay-arrow-position", Voverlay_arrow_position,
doc: /* Marker for where to display an arrow on top of the buffer text.
This must be the beginning of a line in order to work.
See also `overlay-arrow-string'. */);
Voverlay_arrow_position = Qnil;
DEFVAR_LISP ("overlay-arrow-string", Voverlay_arrow_string,
doc: /* String to display as an arrow in non-window frames.
See also `overlay-arrow-position'. */);
Voverlay_arrow_string = build_pure_c_string ("=>");
DEFVAR_LISP ("overlay-arrow-variable-list", Voverlay_arrow_variable_list,
doc: /* List of variables (symbols) which hold markers for overlay arrows.
The symbols on this list are examined during redisplay to determine
where to display overlay arrows. */);
Voverlay_arrow_variable_list
= list1 (intern_c_string ("overlay-arrow-position"));
DEFVAR_INT ("scroll-step", emacs_scroll_step,
doc: /* The number of lines to try scrolling a window by when point moves out.
If that fails to bring point back on frame, point is centered instead.
If this is zero, point is always centered after it moves off frame.
If you want scrolling to always be a line at a time, you should set
`scroll-conservatively' to a large value rather than set this to 1. */);
DEFVAR_INT ("scroll-conservatively", scroll_conservatively,
doc: /* Scroll up to this many lines, to bring point back on screen.
If point moves off-screen, redisplay will scroll by up to
`scroll-conservatively' lines in order to bring point just barely
onto the screen again. If that cannot be done, then redisplay
recenters point as usual.
If the value is greater than 100, redisplay will never recenter point,
but will always scroll just enough text to bring point into view, even
if you move far away.
A value of zero means always recenter point if it moves off screen. */);
scroll_conservatively = 0;
DEFVAR_INT ("scroll-margin", scroll_margin,
doc: /* Number of lines of margin at the top and bottom of a window.
Recenter the window whenever point gets within this many lines
of the top or bottom of the window. */);
scroll_margin = 0;
DEFVAR_LISP ("display-pixels-per-inch", Vdisplay_pixels_per_inch,
doc: /* Pixels per inch value for non-window system displays.
Value is a number or a cons (WIDTH-DPI . HEIGHT-DPI). */);
Vdisplay_pixels_per_inch = make_float (72.0);
#ifdef GLYPH_DEBUG
DEFVAR_INT ("debug-end-pos", debug_end_pos, doc: /* Don't ask. */);
#endif
DEFVAR_LISP ("truncate-partial-width-windows",
Vtruncate_partial_width_windows,
doc: /* Non-nil means truncate lines in windows narrower than the frame.
For an integer value, truncate lines in each window narrower than the
full frame width, provided the total window width in column units is less
than that integer; otherwise, respect the value of `truncate-lines'.
The total width of the window is as returned by `window-total-width', it
includes the fringes, the continuation and truncation glyphs, the
display margins (if any), and the scroll bar
For any other non-nil value, truncate lines in all windows that do
not span the full frame width.
A value of nil means to respect the value of `truncate-lines'.
If `word-wrap' is enabled, you might want to reduce this. */);
Vtruncate_partial_width_windows = make_number (50);
DEFVAR_LISP ("line-number-display-limit", Vline_number_display_limit,
doc: /* Maximum buffer size for which line number should be displayed.
If the buffer is bigger than this, the line number does not appear
in the mode line. A value of nil means no limit. */);
Vline_number_display_limit = Qnil;
DEFVAR_INT ("line-number-display-limit-width",
line_number_display_limit_width,
doc: /* Maximum line width (in characters) for line number display.
If the average length of the lines near point is bigger than this, then the
line number may be omitted from the mode line. */);
line_number_display_limit_width = 200;
DEFVAR_BOOL ("highlight-nonselected-windows", highlight_nonselected_windows,
doc: /* Non-nil means highlight region even in nonselected windows. */);
highlight_nonselected_windows = false;
DEFVAR_BOOL ("multiple-frames", multiple_frames,
doc: /* Non-nil if more than one frame is visible on this display.
Minibuffer-only frames don't count, but iconified frames do.
This variable is not guaranteed to be accurate except while processing
`frame-title-format' and `icon-title-format'. */);
DEFVAR_LISP ("frame-title-format", Vframe_title_format,
doc: /* Template for displaying the title bar of visible frames.
\(Assuming the window manager supports this feature.)
This variable has the same structure as `mode-line-format', except that
the %c and %l constructs are ignored. It is used only on frames for
which no explicit name has been set (see `modify-frame-parameters'). */);
DEFVAR_LISP ("icon-title-format", Vicon_title_format,
doc: /* Template for displaying the title bar of an iconified frame.
\(Assuming the window manager supports this feature.)
This variable has the same structure as `mode-line-format' (which see),
and is used only on frames for which no explicit name has been set
\(see `modify-frame-parameters'). */);
Vicon_title_format
= Vframe_title_format
= listn (CONSTYPE_PURE, 3,
intern_c_string ("multiple-frames"),
build_pure_c_string ("%b"),
listn (CONSTYPE_PURE, 4,
empty_unibyte_string,
intern_c_string ("invocation-name"),
build_pure_c_string ("@"),
intern_c_string ("system-name")));
DEFVAR_LISP ("message-log-max", Vmessage_log_max,
doc: /* Maximum number of lines to keep in the message log buffer.
If nil, disable message logging. If t, log messages but don't truncate
the buffer when it becomes large. */);
Vmessage_log_max = make_number (1000);
DEFVAR_LISP ("window-scroll-functions", Vwindow_scroll_functions,
doc: /* List of functions to call before redisplaying a window with scrolling.
Each function is called with two arguments, the window and its new
display-start position.
These functions are called whenever the `window-start' marker is modified,
either to point into another buffer (e.g. via `set-window-buffer') or another
place in the same buffer.
Note that the value of `window-end' is not valid when these functions are
called.
Warning: Do not use this feature to alter the way the window
is scrolled. It is not designed for that, and such use probably won't
work. */);
Vwindow_scroll_functions = Qnil;
DEFVAR_LISP ("window-text-change-functions",
Vwindow_text_change_functions,
doc: /* Functions to call in redisplay when text in the window might change. */);
Vwindow_text_change_functions = Qnil;
DEFVAR_LISP ("redisplay-end-trigger-functions", Vredisplay_end_trigger_functions,
doc: /* Functions called when redisplay of a window reaches the end trigger.
Each function is called with two arguments, the window and the end trigger value.
See `set-window-redisplay-end-trigger'. */);
Vredisplay_end_trigger_functions = Qnil;
DEFVAR_LISP ("mouse-autoselect-window", Vmouse_autoselect_window,
doc: /* Non-nil means autoselect window with mouse pointer.
If nil, do not autoselect windows.
A positive number means delay autoselection by that many seconds: a
window is autoselected only after the mouse has remained in that
window for the duration of the delay.
A negative number has a similar effect, but causes windows to be
autoselected only after the mouse has stopped moving. (Because of
the way Emacs compares mouse events, you will occasionally wait twice
that time before the window gets selected.)
Any other value means to autoselect window instantaneously when the
mouse pointer enters it.
Autoselection selects the minibuffer only if it is active, and never
unselects the minibuffer if it is active.
When customizing this variable make sure that the actual value of
`focus-follows-mouse' matches the behavior of your window manager. */);
Vmouse_autoselect_window = Qnil;
DEFVAR_LISP ("auto-resize-tool-bars", Vauto_resize_tool_bars,
doc: /* Non-nil means automatically resize tool-bars.
This dynamically changes the tool-bar's height to the minimum height
that is needed to make all tool-bar items visible.
If value is `grow-only', the tool-bar's height is only increased
automatically; to decrease the tool-bar height, use \\[recenter]. */);
Vauto_resize_tool_bars = Qt;
DEFVAR_BOOL ("auto-raise-tool-bar-buttons", auto_raise_tool_bar_buttons_p,
doc: /* Non-nil means raise tool-bar buttons when the mouse moves over them. */);
auto_raise_tool_bar_buttons_p = true;
DEFVAR_BOOL ("make-cursor-line-fully-visible", make_cursor_line_fully_visible_p,
doc: /* Non-nil means to scroll (recenter) cursor line if it is not fully visible. */);
make_cursor_line_fully_visible_p = true;
DEFVAR_LISP ("tool-bar-border", Vtool_bar_border,
doc: /* Border below tool-bar in pixels.
If an integer, use it as the height of the border.
If it is one of `internal-border-width' or `border-width', use the
value of the corresponding frame parameter.
Otherwise, no border is added below the tool-bar. */);
Vtool_bar_border = Qinternal_border_width;
DEFVAR_LISP ("tool-bar-button-margin", Vtool_bar_button_margin,
doc: /* Margin around tool-bar buttons in pixels.
If an integer, use that for both horizontal and vertical margins.
Otherwise, value should be a pair of integers `(HORZ . VERT)' with
HORZ specifying the horizontal margin, and VERT specifying the
vertical margin. */);
Vtool_bar_button_margin = make_number (DEFAULT_TOOL_BAR_BUTTON_MARGIN);
DEFVAR_INT ("tool-bar-button-relief", tool_bar_button_relief,
doc: /* Relief thickness of tool-bar buttons. */);
tool_bar_button_relief = DEFAULT_TOOL_BAR_BUTTON_RELIEF;
DEFVAR_LISP ("tool-bar-style", Vtool_bar_style,
doc: /* Tool bar style to use.
It can be one of
image - show images only
text - show text only
both - show both, text below image
both-horiz - show text to the right of the image
text-image-horiz - show text to the left of the image
any other - use system default or image if no system default.
This variable only affects the GTK+ toolkit version of Emacs. */);
Vtool_bar_style = Qnil;
DEFVAR_INT ("tool-bar-max-label-size", tool_bar_max_label_size,
doc: /* Maximum number of characters a label can have to be shown.
The tool bar style must also show labels for this to have any effect, see
`tool-bar-style'. */);
tool_bar_max_label_size = DEFAULT_TOOL_BAR_LABEL_SIZE;
DEFVAR_LISP ("fontification-functions", Vfontification_functions,
doc: /* List of functions to call to fontify regions of text.
Each function is called with one argument POS. Functions must
fontify a region starting at POS in the current buffer, and give
fontified regions the property `fontified'. */);
Vfontification_functions = Qnil;
Fmake_variable_buffer_local (Qfontification_functions);
DEFVAR_BOOL ("unibyte-display-via-language-environment",
unibyte_display_via_language_environment,
doc: /* Non-nil means display unibyte text according to language environment.
Specifically, this means that raw bytes in the range 160-255 decimal
are displayed by converting them to the equivalent multibyte characters
according to the current language environment. As a result, they are
displayed according to the current fontset.
Note that this variable affects only how these bytes are displayed,
but does not change the fact they are interpreted as raw bytes. */);
unibyte_display_via_language_environment = false;
DEFVAR_LISP ("max-mini-window-height", Vmax_mini_window_height,
doc: /* Maximum height for resizing mini-windows (the minibuffer and the echo area).
If a float, it specifies a fraction of the mini-window frame's height.
If an integer, it specifies a number of lines. */);
Vmax_mini_window_height = make_float (0.25);
DEFVAR_LISP ("resize-mini-windows", Vresize_mini_windows,
doc: /* How to resize mini-windows (the minibuffer and the echo area).
A value of nil means don't automatically resize mini-windows.
A value of t means resize them to fit the text displayed in them.
A value of `grow-only', the default, means let mini-windows grow only;
they return to their normal size when the minibuffer is closed, or the
echo area becomes empty. */);
/* Contrary to the doc string, we initialize this to nil, so that
loading loadup.el won't try to resize windows before loading
window.el, where some functions we need to call for this live.
We assign the 'grow-only' value right after loading window.el
during loadup. */
Vresize_mini_windows = Qnil;
DEFVAR_LISP ("blink-cursor-alist", Vblink_cursor_alist,
doc: /* Alist specifying how to blink the cursor off.
Each element has the form (ON-STATE . OFF-STATE). Whenever the
`cursor-type' frame-parameter or variable equals ON-STATE,
comparing using `equal', Emacs uses OFF-STATE to specify
how to blink it off. ON-STATE and OFF-STATE are values for
the `cursor-type' frame parameter.
If a frame's ON-STATE has no entry in this list,
the frame's other specifications determine how to blink the cursor off. */);
Vblink_cursor_alist = Qnil;
DEFVAR_BOOL ("auto-hscroll-mode", automatic_hscrolling_p,
doc: /* Allow or disallow automatic horizontal scrolling of windows.
If non-nil, windows are automatically scrolled horizontally to make
point visible. */);
automatic_hscrolling_p = true;
DEFSYM (Qauto_hscroll_mode, "auto-hscroll-mode");
DEFVAR_INT ("hscroll-margin", hscroll_margin,
doc: /* How many columns away from the window edge point is allowed to get
before automatic hscrolling will horizontally scroll the window. */);
hscroll_margin = 5;
DEFVAR_LISP ("hscroll-step", Vhscroll_step,
doc: /* How many columns to scroll the window when point gets too close to the edge.
When point is less than `hscroll-margin' columns from the window
edge, automatic hscrolling will scroll the window by the amount of columns
determined by this variable. If its value is a positive integer, scroll that
many columns. If it's a positive floating-point number, it specifies the
fraction of the window's width to scroll. If it's nil or zero, point will be
centered horizontally after the scroll. Any other value, including negative
numbers, are treated as if the value were zero.
Automatic hscrolling always moves point outside the scroll margin, so if
point was more than scroll step columns inside the margin, the window will
scroll more than the value given by the scroll step.
Note that the lower bound for automatic hscrolling specified by `scroll-left'
and `scroll-right' overrides this variable's effect. */);
Vhscroll_step = make_number (0);
DEFVAR_BOOL ("message-truncate-lines", message_truncate_lines,
doc: /* If non-nil, messages are truncated instead of resizing the echo area.
Bind this around calls to `message' to let it take effect. */);
message_truncate_lines = false;
DEFVAR_LISP ("menu-bar-update-hook", Vmenu_bar_update_hook,
doc: /* Normal hook run to update the menu bar definitions.
Redisplay runs this hook before it redisplays the menu bar.
This is used to update menus such as Buffers, whose contents depend on
various data. */);
Vmenu_bar_update_hook = Qnil;
DEFVAR_LISP ("menu-updating-frame", Vmenu_updating_frame,
doc: /* Frame for which we are updating a menu.
The enable predicate for a menu binding should check this variable. */);
Vmenu_updating_frame = Qnil;
DEFVAR_BOOL ("inhibit-menubar-update", inhibit_menubar_update,
doc: /* Non-nil means don't update menu bars. Internal use only. */);
inhibit_menubar_update = false;
DEFVAR_LISP ("wrap-prefix", Vwrap_prefix,
doc: /* Prefix prepended to all continuation lines at display time.
The value may be a string, an image, or a stretch-glyph; it is
interpreted in the same way as the value of a `display' text property.
This variable is overridden by any `wrap-prefix' text or overlay
property.
To add a prefix to non-continuation lines, use `line-prefix'. */);
Vwrap_prefix = Qnil;
DEFSYM (Qwrap_prefix, "wrap-prefix");
Fmake_variable_buffer_local (Qwrap_prefix);
DEFVAR_LISP ("line-prefix", Vline_prefix,
doc: /* Prefix prepended to all non-continuation lines at display time.
The value may be a string, an image, or a stretch-glyph; it is
interpreted in the same way as the value of a `display' text property.
This variable is overridden by any `line-prefix' text or overlay
property.
To add a prefix to continuation lines, use `wrap-prefix'. */);
Vline_prefix = Qnil;
DEFSYM (Qline_prefix, "line-prefix");
Fmake_variable_buffer_local (Qline_prefix);
DEFVAR_BOOL ("inhibit-eval-during-redisplay", inhibit_eval_during_redisplay,
doc: /* Non-nil means don't eval Lisp during redisplay. */);
inhibit_eval_during_redisplay = false;
DEFVAR_BOOL ("inhibit-free-realized-faces", inhibit_free_realized_faces,
doc: /* Non-nil means don't free realized faces. Internal use only. */);
inhibit_free_realized_faces = false;
DEFVAR_BOOL ("inhibit-bidi-mirroring", inhibit_bidi_mirroring,
doc: /* Non-nil means don't mirror characters even when bidi context requires that.
Intended for use during debugging and for testing bidi display;
see biditest.el in the test suite. */);
inhibit_bidi_mirroring = false;
#ifdef GLYPH_DEBUG
DEFVAR_BOOL ("inhibit-try-window-id", inhibit_try_window_id,
doc: /* Inhibit try_window_id display optimization. */);
inhibit_try_window_id = false;
DEFVAR_BOOL ("inhibit-try-window-reusing", inhibit_try_window_reusing,
doc: /* Inhibit try_window_reusing display optimization. */);
inhibit_try_window_reusing = false;
DEFVAR_BOOL ("inhibit-try-cursor-movement", inhibit_try_cursor_movement,
doc: /* Inhibit try_cursor_movement display optimization. */);
inhibit_try_cursor_movement = false;
#endif /* GLYPH_DEBUG */
DEFVAR_INT ("overline-margin", overline_margin,
doc: /* Space between overline and text, in pixels.
The default value is 2: the height of the overline (1 pixel) plus 1 pixel
margin to the character height. */);
overline_margin = 2;
DEFVAR_INT ("underline-minimum-offset",
underline_minimum_offset,
doc: /* Minimum distance between baseline and underline.
This can improve legibility of underlined text at small font sizes,
particularly when using variable `x-use-underline-position-properties'
with fonts that specify an UNDERLINE_POSITION relatively close to the
baseline. The default value is 1. */);
underline_minimum_offset = 1;
DEFVAR_BOOL ("display-hourglass", display_hourglass_p,
doc: /* Non-nil means show an hourglass pointer, when Emacs is busy.
This feature only works when on a window system that can change
cursor shapes. */);
display_hourglass_p = true;
DEFVAR_LISP ("hourglass-delay", Vhourglass_delay,
doc: /* Seconds to wait before displaying an hourglass pointer when Emacs is busy. */);
Vhourglass_delay = make_number (DEFAULT_HOURGLASS_DELAY);
#ifdef HAVE_WINDOW_SYSTEM
hourglass_atimer = NULL;
hourglass_shown_p = false;
#endif /* HAVE_WINDOW_SYSTEM */
/* Name of the face used to display glyphless characters. */
DEFSYM (Qglyphless_char, "glyphless-char");
/* Method symbols for Vglyphless_char_display. */
DEFSYM (Qhex_code, "hex-code");
DEFSYM (Qempty_box, "empty-box");
DEFSYM (Qthin_space, "thin-space");
DEFSYM (Qzero_width, "zero-width");
DEFVAR_LISP ("pre-redisplay-function", Vpre_redisplay_function,
doc: /* Function run just before redisplay.
It is called with one argument, which is the set of windows that are to
be redisplayed. This set can be nil (meaning, only the selected window),
or t (meaning all windows). */);
Vpre_redisplay_function = intern ("ignore");
/* Symbol for the purpose of Vglyphless_char_display. */
DEFSYM (Qglyphless_char_display, "glyphless-char-display");
Fput (Qglyphless_char_display, Qchar_table_extra_slots, make_number (1));
DEFVAR_LISP ("glyphless-char-display", Vglyphless_char_display,
doc: /* Char-table defining glyphless characters.
Each element, if non-nil, should be one of the following:
an ASCII acronym string: display this string in a box
`hex-code': display the hexadecimal code of a character in a box
`empty-box': display as an empty box
`thin-space': display as 1-pixel width space
`zero-width': don't display
An element may also be a cons cell (GRAPHICAL . TEXT), which specifies the
display method for graphical terminals and text terminals respectively.
GRAPHICAL and TEXT should each have one of the values listed above.
The char-table has one extra slot to control the display of a character for
which no font is found. This slot only takes effect on graphical terminals.
Its value should be an ASCII acronym string, `hex-code', `empty-box', or
`thin-space'. The default is `empty-box'.
If a character has a non-nil entry in an active display table, the
display table takes effect; in this case, Emacs does not consult
`glyphless-char-display' at all. */);
Vglyphless_char_display = Fmake_char_table (Qglyphless_char_display, Qnil);
Fset_char_table_extra_slot (Vglyphless_char_display, make_number (0),
Qempty_box);
DEFVAR_LISP ("debug-on-message", Vdebug_on_message,
doc: /* If non-nil, debug if a message matching this regexp is displayed. */);
Vdebug_on_message = Qnil;
DEFVAR_LISP ("redisplay--all-windows-cause", Vredisplay__all_windows_cause,
doc: /* */);
Vredisplay__all_windows_cause = Fmake_hash_table (0, NULL);
DEFVAR_LISP ("redisplay--mode-lines-cause", Vredisplay__mode_lines_cause,
doc: /* */);
Vredisplay__mode_lines_cause = Fmake_hash_table (0, NULL);
DEFVAR_BOOL ("redisplay--inhibit-bidi", redisplay__inhibit_bidi,
doc: /* Non-nil means it is not safe to attempt bidi reordering for display. */);
/* Initialize to t, since we need to disable reordering until
loadup.el successfully loads charprop.el. */
redisplay__inhibit_bidi = true;
}
/* Initialize this module when Emacs starts. */
void
init_xdisp (void)
{
CHARPOS (this_line_start_pos) = 0;
if (!noninteractive)
{
struct window *m = XWINDOW (minibuf_window);
Lisp_Object frame = m->frame;
struct frame *f = XFRAME (frame);
Lisp_Object root = FRAME_ROOT_WINDOW (f);
struct window *r = XWINDOW (root);
int i;
echo_area_window = minibuf_window;
r->top_line = FRAME_TOP_MARGIN (f);
r->pixel_top = r->top_line * FRAME_LINE_HEIGHT (f);
r->total_cols = FRAME_COLS (f);
r->pixel_width = r->total_cols * FRAME_COLUMN_WIDTH (f);
r->total_lines = FRAME_TOTAL_LINES (f) - 1 - FRAME_TOP_MARGIN (f);
r->pixel_height = r->total_lines * FRAME_LINE_HEIGHT (f);
m->top_line = FRAME_TOTAL_LINES (f) - 1;
m->pixel_top = m->top_line * FRAME_LINE_HEIGHT (f);
m->total_cols = FRAME_COLS (f);
m->pixel_width = m->total_cols * FRAME_COLUMN_WIDTH (f);
m->total_lines = 1;
m->pixel_height = m->total_lines * FRAME_LINE_HEIGHT (f);
scratch_glyph_row.glyphs[TEXT_AREA] = scratch_glyphs;
scratch_glyph_row.glyphs[TEXT_AREA + 1]
= scratch_glyphs + MAX_SCRATCH_GLYPHS;
/* The default ellipsis glyphs `...'. */
for (i = 0; i < 3; ++i)
default_invis_vector[i] = make_number ('.');
}
{
/* Allocate the buffer for frame titles.
Also used for `format-mode-line'. */
int size = 100;
mode_line_noprop_buf = xmalloc (size);
mode_line_noprop_buf_end = mode_line_noprop_buf + size;
mode_line_noprop_ptr = mode_line_noprop_buf;
mode_line_target = MODE_LINE_DISPLAY;
}
help_echo_showing_p = false;
}
#ifdef HAVE_WINDOW_SYSTEM
/* Platform-independent portion of hourglass implementation. */
/* Timer function of hourglass_atimer. */
static void
show_hourglass (struct atimer *timer)
{
/* The timer implementation will cancel this timer automatically
after this function has run. Set hourglass_atimer to null
so that we know the timer doesn't have to be canceled. */
hourglass_atimer = NULL;
if (!hourglass_shown_p)
{
Lisp_Object tail, frame;
block_input ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (FRAME_LIVE_P (f) && FRAME_WINDOW_P (f)
&& FRAME_RIF (f)->show_hourglass)
FRAME_RIF (f)->show_hourglass (f);
}
hourglass_shown_p = true;
unblock_input ();
}
}
/* Cancel a currently active hourglass timer, and start a new one. */
void
start_hourglass (void)
{
struct timespec delay;
cancel_hourglass ();
if (INTEGERP (Vhourglass_delay)
&& XINT (Vhourglass_delay) > 0)
delay = make_timespec (min (XINT (Vhourglass_delay),
TYPE_MAXIMUM (time_t)),
0);
else if (FLOATP (Vhourglass_delay)
&& XFLOAT_DATA (Vhourglass_delay) > 0)
delay = dtotimespec (XFLOAT_DATA (Vhourglass_delay));
else
delay = make_timespec (DEFAULT_HOURGLASS_DELAY, 0);
hourglass_atimer = start_atimer (ATIMER_RELATIVE, delay,
show_hourglass, NULL);
}
/* Cancel the hourglass cursor timer if active, hide a busy cursor if
shown. */
void
cancel_hourglass (void)
{
if (hourglass_atimer)
{
cancel_atimer (hourglass_atimer);
hourglass_atimer = NULL;
}
if (hourglass_shown_p)
{
Lisp_Object tail, frame;
block_input ();
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
if (FRAME_LIVE_P (f) && FRAME_WINDOW_P (f)
&& FRAME_RIF (f)->hide_hourglass)
FRAME_RIF (f)->hide_hourglass (f);
#ifdef HAVE_NTGUI
/* No cursors on non GUI frames - restore to stock arrow cursor. */
else if (!FRAME_W32_P (f))
w32_arrow_cursor ();
#endif
}
hourglass_shown_p = false;
unblock_input ();
}
}
#endif /* HAVE_WINDOW_SYSTEM */
|