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
| | /* Window creation, deletion and examination for GNU Emacs.
Does not include redisplay.
Copyright (C) 1985-1987, 1993-1998, 2000-2024 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 <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Work around GCC bug 102671. */
#if 10 <= __GNUC__
# pragma GCC diagnostic ignored "-Wanalyzer-null-dereference"
#endif
#include "lisp.h"
#include "buffer.h"
#include "keyboard.h"
#include "keymap.h"
#include "frame.h"
#include "window.h"
#include "commands.h"
#include "indent.h"
#include "termchar.h"
#include "disptab.h"
#include "dispextern.h"
#include "blockinput.h"
#include "termhooks.h" /* For FRAME_TERMINAL. */
#include "xwidget.h"
#ifdef HAVE_WINDOW_SYSTEM
#include TERM_HEADER
#endif /* HAVE_WINDOW_SYSTEM */
#ifdef MSDOS
#include "msdos.h"
#endif
#include "pdumper.h"
static ptrdiff_t count_windows (struct window *);
static ptrdiff_t get_leaf_windows (struct window *, struct window **,
ptrdiff_t);
static void window_scroll_pixel_based (Lisp_Object, int, bool, bool);
static void window_scroll_line_based (Lisp_Object, int, bool, bool);
static void window_scroll_for_long_lines (struct window *, int, bool);
static void foreach_window (struct frame *,
bool (* fn) (struct window *, void *),
void *);
static bool foreach_window_1 (struct window *,
bool (* fn) (struct window *, void *),
void *);
static bool window_resize_check (struct window *, bool);
static void window_resize_apply (struct window *, bool);
static void select_window_1 (Lisp_Object, bool);
static void run_window_configuration_change_hook (struct frame *);
static struct window *set_window_fringes (struct window *, Lisp_Object,
Lisp_Object, Lisp_Object,
Lisp_Object);
static struct window *set_window_margins (struct window *, Lisp_Object,
Lisp_Object);
static struct window *set_window_scroll_bars (struct window *, Lisp_Object,
Lisp_Object, Lisp_Object,
Lisp_Object, Lisp_Object);
static void apply_window_adjustment (struct window *);
/* This is the window in which the terminal's cursor should
be left when nothing is being done with it. This must
always be a leaf window, and its buffer is selected by
the top level editing loop at the end of each command.
This value is always the same as
FRAME_SELECTED_WINDOW (selected_frame). */
Lisp_Object selected_window;
/* The value of selected_window at the last time window change
functions were run. This is always the same as
FRAME_OLD_SELECTED_WINDOW (old_selected_frame). */
static Lisp_Object old_selected_window;
/* A list of all windows for use by next_window and Fwindow_list.
Functions creating or deleting windows should invalidate this cache
by setting it to nil. */
Lisp_Object Vwindow_list;
/* True mean window_change_record has to record all live frames. */
static bool window_change_record_frames;
/* The mini-buffer window of the selected frame.
Note that you cannot test for mini-bufferness of an arbitrary window
by comparing against this; but you can test for mini-bufferness of
the selected window. */
Lisp_Object minibuf_window;
/* Non-nil means it is the window whose mode line should be
shown as the selected window when the minibuffer is selected. */
Lisp_Object minibuf_selected_window;
/* Incremented for each window created. */
static EMACS_INT sequence_number;
/* Used by the function window_scroll_pixel_based. */
static int window_scroll_pixel_based_preserve_x;
static int window_scroll_pixel_based_preserve_y;
/* Same for window_scroll_line_based. */
static EMACS_INT window_scroll_preserve_hpos;
static EMACS_INT window_scroll_preserve_vpos;
\f
static void
CHECK_WINDOW_CONFIGURATION (Lisp_Object x)
{
CHECK_TYPE (WINDOW_CONFIGURATIONP (x), Qwindow_configuration_p, x);
}
/* These setters are used only in this file, so they can be private. */
static void
wset_combination_limit (struct window *w, Lisp_Object val)
{
w->combination_limit = val;
}
static void
wset_dedicated (struct window *w, Lisp_Object val)
{
w->dedicated = val;
}
static void
wset_display_table (struct window *w, Lisp_Object val)
{
w->display_table = val;
}
static void
wset_new_normal (struct window *w, Lisp_Object val)
{
w->new_normal = val;
}
static void
wset_new_total (struct window *w, Lisp_Object val)
{
w->new_total = val;
}
static void
wset_normal_cols (struct window *w, Lisp_Object val)
{
w->normal_cols = val;
}
static void
wset_normal_lines (struct window *w, Lisp_Object val)
{
w->normal_lines = val;
}
static void
wset_parent (struct window *w, Lisp_Object val)
{
w->parent = val;
}
static void
wset_pointm (struct window *w, Lisp_Object val)
{
w->pointm = val;
}
static void
wset_old_pointm (struct window *w, Lisp_Object val)
{
w->old_pointm = val;
}
static void
wset_start (struct window *w, Lisp_Object val)
{
w->start = val;
}
static void
wset_temslot (struct window *w, Lisp_Object val)
{
w->temslot = val;
}
static void
wset_vertical_scroll_bar_type (struct window *w, Lisp_Object val)
{
w->vertical_scroll_bar_type = val;
}
static void
wset_window_parameters (struct window *w, Lisp_Object val)
{
w->window_parameters = val;
}
static void
wset_combination (struct window *w, bool horflag, Lisp_Object val)
{
/* Since leaf windows never becomes non-leaf, there should
be no buffer and markers in start and pointm fields of W. */
eassert (!BUFFERP (w->contents) && NILP (w->start) && NILP (w->pointm));
w->contents = val;
/* When an internal window is deleted and VAL is nil, HORFLAG
is meaningless. */
if (!NILP (val))
w->horizontal = horflag;
}
/* True if leaf window W doesn't reflect the actual state
of displayed buffer due to its text or overlays change. */
bool
window_outdated (struct window *w)
{
struct buffer *b = XBUFFER (w->contents);
return (w->last_modified < BUF_MODIFF (b)
|| w->last_overlay_modified < BUF_OVERLAY_MODIFF (b));
}
struct window *
decode_live_window (register Lisp_Object window)
{
if (NILP (window))
return XWINDOW (selected_window);
CHECK_LIVE_WINDOW (window);
return XWINDOW (window);
}
struct window *
decode_any_window (register Lisp_Object window)
{
struct window *w;
if (NILP (window))
return XWINDOW (selected_window);
CHECK_WINDOW (window);
w = XWINDOW (window);
return w;
}
static struct window *
decode_valid_window (register Lisp_Object window)
{
struct window *w;
if (NILP (window))
return XWINDOW (selected_window);
CHECK_VALID_WINDOW (window);
w = XWINDOW (window);
return w;
}
/* Called when W's buffer slot is changed. ARG -1 means that W is about to
cease its buffer, and 1 means that W is about to set up the new one. */
static void
adjust_window_count (struct window *w, int arg)
{
eassert (eabs (arg) == 1);
if (BUFFERP (w->contents))
{
struct buffer *b = XBUFFER (w->contents);
if (b->base_buffer)
b = b->base_buffer;
b->window_count += arg;
eassert (b->window_count >= 0);
/* These should be recalculated by redisplay code. */
w->window_end_valid = false;
w->base_line_pos = 0;
}
}
/* Set W's buffer slot to VAL and recompute number
of windows showing VAL if it is a buffer. */
void
wset_buffer (struct window *w, Lisp_Object val)
{
adjust_window_count (w, -1);
if (BUFFERP (val))
/* Make sure that we do not assign the buffer
to an internal window. */
eassert (MARKERP (w->start) && MARKERP (w->pointm));
w->contents = val;
adjust_window_count (w, 1);
}
static void
wset_old_buffer (struct window *w, Lisp_Object val)
{
w->old_buffer = val;
}
DEFUN ("windowp", Fwindowp, Swindowp, 1, 1, 0,
doc: /* Return t if OBJECT is a window and nil otherwise. */)
(Lisp_Object object)
{
return WINDOWP (object) ? Qt : Qnil;
}
DEFUN ("window-valid-p", Fwindow_valid_p, Swindow_valid_p, 1, 1, 0,
doc: /* Return t if OBJECT is a valid window and nil otherwise.
A valid window is either a window that displays a buffer or an internal
window. Windows that have been deleted are not valid. */)
(Lisp_Object object)
{
return WINDOW_VALID_P (object) ? Qt : Qnil;
}
DEFUN ("window-live-p", Fwindow_live_p, Swindow_live_p, 1, 1, 0,
doc: /* Return t if OBJECT is a live window and nil otherwise.
A live window is a window that displays a buffer.
Internal windows and deleted windows are not live. */)
(Lisp_Object object)
{
return WINDOW_LIVE_P (object) ? Qt : Qnil;
}
\f
/* Frames and windows. */
DEFUN ("window-frame", Fwindow_frame, Swindow_frame, 0, 1, 0,
doc: /* Return the frame that window WINDOW is on.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return decode_valid_window (window)->frame;
}
DEFUN ("frame-root-window", Fframe_root_window, Sframe_root_window, 0, 1, 0,
doc: /* Return the root window of FRAME-OR-WINDOW.
If omitted, FRAME-OR-WINDOW defaults to the currently selected frame.
With a frame argument, return that frame's root window.
With a window argument, return the root window of that window's frame. */)
(Lisp_Object frame_or_window)
{
Lisp_Object window;
if (NILP (frame_or_window))
window = SELECTED_FRAME ()->root_window;
else if (WINDOW_VALID_P (frame_or_window))
window = XFRAME (XWINDOW (frame_or_window)->frame)->root_window;
else
{
CHECK_LIVE_FRAME (frame_or_window);
window = XFRAME (frame_or_window)->root_window;
}
return window;
}
DEFUN ("minibuffer-window", Fminibuffer_window, Sminibuffer_window, 0, 1, 0,
doc: /* Return the minibuffer window for frame FRAME.
If FRAME is omitted or nil, it defaults to the selected frame. */)
(Lisp_Object frame)
{
return FRAME_MINIBUF_WINDOW (decode_live_frame (frame));
}
DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p,
Swindow_minibuffer_p, 0, 1, 0,
doc: /* Return t if WINDOW is a minibuffer window.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return MINI_WINDOW_P (decode_valid_window (window)) ? Qt : Qnil;
}
/* Don't move this to window.el - this must be a safe routine. */
DEFUN ("frame-first-window", Fframe_first_window, Sframe_first_window, 0, 1, 0,
doc: /* Return the topmost, leftmost live window on FRAME-OR-WINDOW.
If omitted, FRAME-OR-WINDOW defaults to the currently selected frame.
Else if FRAME-OR-WINDOW denotes a valid window, return the first window
of that window's frame. If FRAME-OR-WINDOW denotes a live frame, return
the first window of that frame. */)
(Lisp_Object frame_or_window)
{
Lisp_Object window;
if (NILP (frame_or_window))
window = SELECTED_FRAME ()->root_window;
else if (WINDOW_VALID_P (frame_or_window))
window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->root_window;
else
{
CHECK_LIVE_FRAME (frame_or_window);
window = XFRAME (frame_or_window)->root_window;
}
while (WINDOWP (XWINDOW (window)->contents))
window = XWINDOW (window)->contents;
return window;
}
DEFUN ("frame-selected-window", Fframe_selected_window,
Sframe_selected_window, 0, 1, 0,
doc: /* Return the selected window of FRAME-OR-WINDOW.
If omitted, FRAME-OR-WINDOW defaults to the currently selected frame.
Else if FRAME-OR-WINDOW denotes a valid window, return the selected
window of that window's frame. If FRAME-OR-WINDOW denotes a live frame,
return the selected window of that frame. */)
(Lisp_Object frame_or_window)
{
Lisp_Object window;
if (NILP (frame_or_window))
window = SELECTED_FRAME ()->selected_window;
else if (WINDOW_VALID_P (frame_or_window))
window = XFRAME (WINDOW_FRAME (XWINDOW (frame_or_window)))->selected_window;
else
{
CHECK_LIVE_FRAME (frame_or_window);
window = XFRAME (frame_or_window)->selected_window;
}
return window;
}
DEFUN ("frame-old-selected-window", Fframe_old_selected_window,
Sframe_old_selected_window, 0, 1, 0,
doc: /* Return old selected window of FRAME.
FRAME must be a live frame and defaults to the selected one.
The return value is the window selected on FRAME the last time window
change functions were run for FRAME. */)
(Lisp_Object frame)
{
if (NILP (frame))
frame = selected_frame;
CHECK_LIVE_FRAME (frame);
return XFRAME (frame)->old_selected_window;
}
DEFUN ("set-frame-selected-window", Fset_frame_selected_window,
Sset_frame_selected_window, 2, 3, 0,
doc: /* Set selected window of FRAME to WINDOW.
FRAME must be a live frame and defaults to the selected one. If FRAME
is the selected frame, this makes WINDOW the selected window. Optional
argument NORECORD non-nil means to neither change the order of recently
selected windows nor the buffer list. WINDOW must denote a live window.
Return WINDOW. */)
(Lisp_Object frame, Lisp_Object window, Lisp_Object norecord)
{
if (NILP (frame))
frame = selected_frame;
CHECK_LIVE_FRAME (frame);
CHECK_LIVE_WINDOW (window);
if (! EQ (frame, WINDOW_FRAME (XWINDOW (window))))
error ("In `set-frame-selected-window', WINDOW is not on FRAME");
if (EQ (frame, selected_frame))
return Fselect_window (window, norecord);
else
{
fset_selected_window (XFRAME (frame), window);
/* Don't clear FRAME's select_mini_window_flag here. */
return window;
}
}
DEFUN ("selected-window", Fselected_window, Sselected_window, 0, 0, 0,
doc: /* Return the selected window.
The selected window is the window in which the standard cursor for
selected windows appears and to which many commands apply.
Also see `old-selected-window' and `minibuffer-selected-window'. */)
(void)
{
return selected_window;
}
DEFUN ("old-selected-window", Fold_selected_window,
Sold_selected_window, 0, 0, 0,
doc: /* Return the old selected window.
The return value is the window selected the last time window change
functions were run. */)
(void)
{
return old_selected_window;
}
EMACS_INT window_select_count;
/* If select_window is called with inhibit_point_swap true it will
not store point of the old selected window's buffer back into that
window's pointm slot. This is needed by Fset_window_configuration to
avoid that the display routine is called with selected_window set to
Qnil causing a subsequent crash. */
static Lisp_Object
select_window (Lisp_Object window, Lisp_Object norecord,
bool inhibit_point_swap)
{
struct window *w;
struct frame *sf;
Lisp_Object frame;
struct frame *f;
CHECK_LIVE_WINDOW (window);
w = XWINDOW (window);
frame = WINDOW_FRAME (w);
f = XFRAME (frame);
if (FRAME_TOOLTIP_P (f))
/* Do not select a tooltip window (Bug#47207). */
error ("Cannot select a tooltip window");
/* We definitely want to select WINDOW, not the mini-window. */
f->select_mini_window_flag = false;
/* Make the selected window's buffer current. */
Fset_buffer (w->contents);
if (EQ (window, selected_window) && !inhibit_point_swap)
/* `switch-to-buffer' uses (select-window (selected-window)) as a "clever"
way to call record_buffer from Elisp, so it's important that we call
record_buffer before returning here. */
goto record_and_return;
if (NILP (norecord) || EQ (norecord, Qmark_for_redisplay))
{ /* Mark the window for redisplay since the selected-window has
a different mode-line. */
wset_redisplay (XWINDOW (selected_window));
wset_redisplay (w);
}
else
redisplay_other_windows ();
sf = SELECTED_FRAME ();
if (f != sf)
{
fset_selected_window (f, window);
/* Use this rather than Fhandle_switch_frame
so that FRAME_FOCUS_FRAME is moved appropriately as we
move around in the state where a minibuffer in a separate
frame is active. */
Fselect_frame (frame, norecord);
/* Fselect_frame called us back so we've done all the work already. */
eassert (EQ (window, selected_window)
|| (EQ (window, f->minibuffer_window)
&& NILP (Fminibufferp (XWINDOW (window)->contents, Qt))));
return window;
}
else
fset_selected_window (sf, window);
select_window_1 (window, inhibit_point_swap);
bset_last_selected_window (XBUFFER (w->contents), window);
record_and_return:
/* record_buffer can call maybe_quit, so make sure it is run only
after we have re-established the invariant between
selected_window and selected_frame, otherwise the temporary
broken invariant might "escape" (Bug#14161). */
if (NILP (norecord))
{
w->use_time = ++window_select_count;
record_buffer (w->contents);
}
return window;
}
/* Select window with a minimum of fuss, i.e. don't record the change anywhere
(not even for redisplay's benefit), and assume that the window's frame is
already selected. */
static void
select_window_1 (Lisp_Object window, bool inhibit_point_swap)
{
/* Store the old selected window's buffer's point in pointm of the old
selected window. It belongs to that window, and when the window is
not selected, must be in the window. */
if (!inhibit_point_swap)
{
struct window *ow = XWINDOW (selected_window);
if (BUFFERP (ow->contents))
set_marker_both (ow->pointm, ow->contents,
BUF_PT (XBUFFER (ow->contents)),
BUF_PT_BYTE (XBUFFER (ow->contents)));
}
selected_window = window;
/* Go to the point recorded in the window.
This is important when the buffer is in more
than one window. It also matters when
redisplay_window has altered point after scrolling,
because it makes the change only in the window. */
set_point_from_marker (XWINDOW (window)->pointm);
}
DEFUN ("select-window", Fselect_window, Sselect_window, 1, 2, 0,
doc: /* Select WINDOW which must be a live window.
Also make WINDOW's frame the selected frame and WINDOW that frame's
selected window. In addition, make WINDOW's buffer current and set its
buffer's value of `point' to the value of WINDOW's `window-point'.
Return WINDOW.
Optional second arg NORECORD non-nil means do not put this buffer at the
front of the buffer list and do not make this window the most recently
selected one. Also, do not mark WINDOW for redisplay unless NORECORD
equals the special symbol `mark-for-redisplay'.
Run `buffer-list-update-hook' unless NORECORD is non-nil. Note that
applications and internal routines often select a window temporarily for
various purposes; mostly, to simplify coding. As a rule, such
selections should not be recorded and therefore will not pollute
`buffer-list-update-hook'. Selections that "really count" are those
causing a visible change in the next redisplay of WINDOW's frame and
should always be recorded. So if you think of running a function each
time a window gets selected, put it on `buffer-list-update-hook' or
`window-selection-change-functions'.
Also note that the main editor command loop sets the current buffer to
the buffer of the selected window before each command. */)
(Lisp_Object window, Lisp_Object norecord)
{
return select_window (window, norecord, false);
}
\f
DEFUN ("window-buffer", Fwindow_buffer, Swindow_buffer, 0, 1, 0,
doc: /* Return the buffer displayed in window WINDOW.
If WINDOW is omitted or nil, it defaults to the selected window.
Return nil for an internal window or a deleted window. */)
(Lisp_Object window)
{
struct window *w = decode_any_window (window);
return WINDOW_LEAF_P (w) ? w->contents : Qnil;
}
DEFUN ("window-old-buffer", Fwindow_old_buffer, Swindow_old_buffer, 0, 1, 0,
doc: /* Return the old buffer displayed by WINDOW.
WINDOW must be a live window and defaults to the selected one.
The return value is the buffer shown in WINDOW at the last time window
change functions were run. It is nil if WINDOW was created after
that. It is t if WINDOW has been restored from a window configuration
after that. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
return (NILP (w->old_buffer)
/* A new window. */
? Qnil
: (w->change_stamp != WINDOW_XFRAME (w)->change_stamp)
/* A window restored from a configuration. */
? Qt
/* A window that was live the last time seen by window
change functions. */
: w->old_buffer);
}
DEFUN ("window-parent", Fwindow_parent, Swindow_parent, 0, 1, 0,
doc: /* Return the parent window of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
Return nil for a window with no parent (e.g. a root window). */)
(Lisp_Object window)
{
return decode_valid_window (window)->parent;
}
DEFUN ("window-top-child", Fwindow_top_child, Swindow_top_child, 0, 1, 0,
doc: /* Return the topmost child window of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
Return nil if WINDOW is a live window (live windows have no children).
Return nil if WINDOW is an internal window whose children form a
horizontal combination. */)
(Lisp_Object window)
{
struct window *w = decode_valid_window (window);
return WINDOW_VERTICAL_COMBINATION_P (w) ? w->contents : Qnil;
}
DEFUN ("window-left-child", Fwindow_left_child, Swindow_left_child, 0, 1, 0,
doc: /* Return the leftmost child window of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
Return nil if WINDOW is a live window (live windows have no children).
Return nil if WINDOW is an internal window whose children form a
vertical combination. */)
(Lisp_Object window)
{
struct window *w = decode_valid_window (window);
return WINDOW_HORIZONTAL_COMBINATION_P (w) ? w->contents : Qnil;
}
DEFUN ("window-next-sibling", Fwindow_next_sibling, Swindow_next_sibling, 0, 1, 0,
doc: /* Return the next sibling window of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
Return nil if WINDOW has no next sibling. */)
(Lisp_Object window)
{
return decode_valid_window (window)->next;
}
DEFUN ("window-prev-sibling", Fwindow_prev_sibling, Swindow_prev_sibling, 0, 1, 0,
doc: /* Return the previous sibling window of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
Return nil if WINDOW has no previous sibling. */)
(Lisp_Object window)
{
return decode_valid_window (window)->prev;
}
DEFUN ("window-combination-limit", Fwindow_combination_limit, Swindow_combination_limit, 1, 1, 0,
doc: /* Return combination limit of window WINDOW.
WINDOW must be a valid window used in horizontal or vertical combination.
If the return value is nil, child windows of WINDOW can be recombined with
WINDOW's siblings. A return value of t means that child windows of
WINDOW are never (re-)combined with WINDOW's siblings. */)
(Lisp_Object window)
{
struct window *w;
CHECK_VALID_WINDOW (window);
w = XWINDOW (window);
if (WINDOW_LEAF_P (w))
error ("Combination limit is meaningful for internal windows only");
return w->combination_limit;
}
DEFUN ("set-window-combination-limit", Fset_window_combination_limit, Sset_window_combination_limit, 2, 2, 0,
doc: /* Set combination limit of window WINDOW to LIMIT; return LIMIT.
WINDOW must be a valid window used in horizontal or vertical combination.
If LIMIT is nil, child windows of WINDOW can be recombined with WINDOW's
siblings. LIMIT t means that child windows of WINDOW are never
\(re-)combined with WINDOW's siblings. Other values are reserved for
future use. */)
(Lisp_Object window, Lisp_Object limit)
{
struct window *w;
CHECK_VALID_WINDOW (window);
w = XWINDOW (window);
if (WINDOW_LEAF_P (w))
error ("Combination limit is meaningful for internal windows only");
wset_combination_limit (w, limit);
return limit;
}
DEFUN ("window-use-time", Fwindow_use_time, Swindow_use_time, 0, 1, 0,
doc: /* Return the use time of window WINDOW.
WINDOW must specify a live window and defaults to the selected one.
The window with the highest use time is usually the one most recently
selected by calling `select-window' with NORECORD nil. The window with
the lowest use time is usually the least recently selected one chosen in
such a way.
Note that the use time of a window can be also changed by calling
`window-bump-use-time' for that window. */)
(Lisp_Object window)
{
return make_fixnum (decode_live_window (window)->use_time);
}
DEFUN ("window-bump-use-time", Fwindow_bump_use_time,
Swindow_bump_use_time, 0, 1, 0,
doc: /* Mark WINDOW as second most recently used.
WINDOW must specify a live window.
If WINDOW is not selected and the selected window has the highest use
time of all windows, set the use time of WINDOW to that of the selected
window, increase the use time of the selected window by one and return
the new use time of WINDOW. Otherwise, do nothing and return nil. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
struct window *sw = XWINDOW (selected_window);
if (w != sw && sw->use_time == window_select_count)
{
w->use_time = window_select_count;
sw->use_time = ++window_select_count;
return make_fixnum (w->use_time);
}
else
return Qnil;
}
\f
DEFUN ("window-pixel-width", Fwindow_pixel_width, Swindow_pixel_width, 0, 1, 0,
doc: /* Return the width of window WINDOW in pixels.
WINDOW must be a valid window and defaults to the selected one.
The return value includes the fringes and margins of WINDOW as well as
any vertical dividers or scroll bars belonging to WINDOW. If WINDOW is
an internal window, its pixel width is the width of the screen areas
spanned by its children. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->pixel_width);
}
DEFUN ("window-pixel-height", Fwindow_pixel_height, Swindow_pixel_height, 0, 1, 0,
doc: /* Return the height of window WINDOW in pixels.
WINDOW must be a valid window and defaults to the selected one.
The return value includes the mode line and header line and the bottom
divider, if any. If WINDOW is an internal window, its pixel height is
the height of the screen areas spanned by its children. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->pixel_height);
}
DEFUN ("window-old-pixel-width", Fwindow_old_pixel_width,
Swindow_old_pixel_width, 0, 1, 0,
doc: /* Return old total pixel width of WINDOW.
WINDOW must be a valid window and defaults to the selected one.
The return value is the total pixel width of WINDOW after the last
time window change functions found WINDOW live on its frame. It is
zero if WINDOW was created after that. */)
(Lisp_Object window)
{
return (make_fixnum
(decode_valid_window (window)->old_pixel_width));
}
DEFUN ("window-old-pixel-height", Fwindow_old_pixel_height,
Swindow_old_pixel_height, 0, 1, 0,
doc: /* Return old total pixel height of WINDOW.
WINDOW must be a valid window and defaults to the selected one.
The return value is the total pixel height of WINDOW after the last
time window change functions found WINDOW live on its frame. It is
zero if WINDOW was created after that. */)
(Lisp_Object window)
{
return (make_fixnum
(decode_valid_window (window)->old_pixel_height));
}
DEFUN ("window-total-height", Fwindow_total_height, Swindow_total_height, 0, 2, 0,
doc: /* Return the height of window WINDOW in lines.
WINDOW must be a valid window and defaults to the selected one.
The return value includes the heights of WINDOW's mode and header line
and its bottom divider, if any. If WINDOW is an internal window, the
total height is the height of the screen areas spanned by its children.
If WINDOW's pixel height is not an integral multiple of its frame's
character height, the number of lines occupied by WINDOW is rounded
internally. This is done in a way such that, if WINDOW is a parent
window, the sum of the total heights of all its children internally
equals the total height of WINDOW.
If the optional argument ROUND is `ceiling', return the smallest integer
larger than WINDOW's pixel height divided by the character height of
WINDOW's frame. ROUND `floor' means to return the largest integer
smaller than WINDOW's pixel height divided by the character height of
WINDOW's frame. Any other value of ROUND means to return the internal
total height of WINDOW. */)
(Lisp_Object window, Lisp_Object round)
{
struct window *w = decode_valid_window (window);
if (! EQ (round, Qfloor) && ! EQ (round, Qceiling))
return make_fixnum (w->total_lines);
else
{
int unit = FRAME_LINE_HEIGHT (WINDOW_XFRAME (w));
return make_fixnum (EQ (round, Qceiling)
? ((w->pixel_height + unit - 1) /unit)
: (w->pixel_height / unit));
}
}
DEFUN ("window-total-width", Fwindow_total_width, Swindow_total_width, 0, 2, 0,
doc: /* Return the total width of window WINDOW in columns.
WINDOW must be a valid window and defaults to the selected one.
The return value includes the widths of WINDOW's fringes, margins,
scroll bars and its right divider, if any. If WINDOW is an internal
window, the total width is the width of the screen areas spanned by its
children.
If WINDOW's pixel width is not an integral multiple of its frame's
character width, the number of lines occupied by WINDOW is rounded
internally. This is done in a way such that, if WINDOW is a parent
window, the sum of the total widths of all its children internally
equals the total width of WINDOW.
If the optional argument ROUND is `ceiling', return the smallest integer
larger than WINDOW's pixel width divided by the character width of
WINDOW's frame. ROUND `floor' means to return the largest integer
smaller than WINDOW's pixel width divided by the character width of
WINDOW's frame. Any other value of ROUND means to return the internal
total width of WINDOW. */)
(Lisp_Object window, Lisp_Object round)
{
struct window *w = decode_valid_window (window);
if (! EQ (round, Qfloor) && ! EQ (round, Qceiling))
return make_fixnum (w->total_cols);
else
{
int unit = FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w));
return make_fixnum (EQ (round, Qceiling)
? ((w->pixel_width + unit - 1) /unit)
: (w->pixel_width / unit));
}
}
DEFUN ("window-new-total", Fwindow_new_total, Swindow_new_total, 0, 1, 0,
doc: /* Return the new total size of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
The new total size of WINDOW is the value set by the last call of
`set-window-new-total' for WINDOW. If it is valid, it will be shortly
installed as WINDOW's total height (see `window-total-height') or total
width (see `window-total-width'). */)
(Lisp_Object window)
{
return decode_valid_window (window)->new_total;
}
DEFUN ("window-normal-size", Fwindow_normal_size, Swindow_normal_size, 0, 2, 0,
doc: /* Return the normal height of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
If HORIZONTAL is non-nil, return the normal width of WINDOW.
The normal height of a frame's root window or a window that is
horizontally combined (a window that has a left or right sibling) is
1.0. The normal height of a window that is vertically combined (has a
sibling above or below) is the fraction of the window's height with
respect to its parent. The sum of the normal heights of all windows in a
vertical combination equals 1.0.
Similarly, the normal width of a frame's root window or a window that is
vertically combined equals 1.0. The normal width of a window that is
horizontally combined is the fraction of the window's width with respect
to its parent. The sum of the normal widths of all windows in a
horizontal combination equals 1.0.
The normal sizes of windows are used to restore the proportional sizes
of windows after they have been shrunk to their minimum sizes; for
example when a frame is temporarily made very small and afterwards gets
re-enlarged to its previous size. */)
(Lisp_Object window, Lisp_Object horizontal)
{
struct window *w = decode_valid_window (window);
return NILP (horizontal) ? w->normal_lines : w->normal_cols;
}
DEFUN ("window-new-normal", Fwindow_new_normal, Swindow_new_normal, 0, 1, 0,
doc: /* Return new normal size of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
The new normal size of WINDOW is the value set by the last call of
`set-window-new-normal' for WINDOW. If valid, it will be shortly
installed as WINDOW's normal size (see `window-normal-size'). */)
(Lisp_Object window)
{
return decode_valid_window (window)->new_normal;
}
DEFUN ("window-new-pixel", Fwindow_new_pixel, Swindow_new_pixel, 0, 1, 0,
doc: /* Return new pixel size of window WINDOW.
WINDOW must be a valid window and defaults to the selected one.
The new pixel size of WINDOW is the value set by the last call of
`set-window-new-pixel' for WINDOW. If it is valid, it will be shortly
installed as WINDOW's pixel height (see `window-pixel-height') or pixel
width (see `window-pixel-width'). */)
(Lisp_Object window)
{
return decode_valid_window (window)->new_pixel;
}
DEFUN ("window-pixel-left", Fwindow_pixel_left, Swindow_pixel_left, 0, 1, 0,
doc: /* Return left pixel edge of window WINDOW.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->pixel_left);
}
DEFUN ("window-pixel-top", Fwindow_pixel_top, Swindow_pixel_top, 0, 1, 0,
doc: /* Return top pixel edge of window WINDOW.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->pixel_top);
}
DEFUN ("window-left-column", Fwindow_left_column, Swindow_left_column, 0, 1, 0,
doc: /* Return left column of window WINDOW.
This is the distance, in columns, between the left edge of WINDOW and
the left edge of the frame's window area. For instance, the return
value is 0 if there is no window to the left of WINDOW.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->left_col);
}
DEFUN ("window-top-line", Fwindow_top_line, Swindow_top_line, 0, 1, 0,
doc: /* Return top line of window WINDOW.
This is the distance, in lines, between the top of WINDOW and the top
of the frame's window area. For instance, the return value is 0 if
there is no window above WINDOW.
WINDOW must be a valid window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (decode_valid_window (window)->top_line);
}
static enum window_body_unit
window_body_unit_from_symbol (Lisp_Object unit)
{
return
EQ (unit, Qremap)
? WINDOW_BODY_IN_REMAPPED_CHARS
: (NILP (unit)
? WINDOW_BODY_IN_CANONICAL_CHARS
: WINDOW_BODY_IN_PIXELS);
}
/* Return the number of lines/pixels of W's body. Don't count any mode
or header line or horizontal divider of W. Rounds down to nearest
integer when not working pixelwise. */
int
window_body_height (struct window *w, enum window_body_unit pixelwise)
{
int height = (w->pixel_height
- WINDOW_TAB_LINE_HEIGHT (w)
- WINDOW_HEADER_LINE_HEIGHT (w)
- (WINDOW_HAS_HORIZONTAL_SCROLL_BAR (w)
? WINDOW_SCROLL_BAR_AREA_HEIGHT (w)
: 0)
- WINDOW_MODE_LINE_HEIGHT (w)
- WINDOW_BOTTOM_DIVIDER_WIDTH (w));
int denom = 1;
if (pixelwise == WINDOW_BODY_IN_REMAPPED_CHARS)
{
if (!NILP (Vface_remapping_alist))
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
int face_id = lookup_named_face (NULL, f, Qdefault, true);
struct face *face = FACE_FROM_ID_OR_NULL (f, face_id);
if (face && face->font && face->font->height)
denom = face->font->height;
}
/* For performance, use canonical chars if no face remapping. */
else
pixelwise = WINDOW_BODY_IN_CANONICAL_CHARS;
}
if (pixelwise == WINDOW_BODY_IN_CANONICAL_CHARS)
denom = FRAME_LINE_HEIGHT (WINDOW_XFRAME (w));
/* Don't return a negative value. */
return max (height / denom, 0);
}
/* Return the number of columns/pixels of W's body. Don't count columns
occupied by the scroll bar or the divider/vertical bar separating W
from its right sibling or margins. On window-systems don't count
fringes either. Round down to nearest integer when not working
pixelwise. */
int
window_body_width (struct window *w, enum window_body_unit pixelwise)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
int width = (w->pixel_width
- WINDOW_RIGHT_DIVIDER_WIDTH (w)
- (WINDOW_HAS_VERTICAL_SCROLL_BAR (w)
? WINDOW_SCROLL_BAR_AREA_WIDTH (w)
: (/* A vertical bar is either 1 or 0. */
!FRAME_WINDOW_P (f)
&& !WINDOW_RIGHTMOST_P (w)
&& !WINDOW_RIGHT_DIVIDER_WIDTH (w)))
- WINDOW_MARGINS_WIDTH (w)
- (FRAME_WINDOW_P (f)
? WINDOW_FRINGES_WIDTH (w)
: 0));
int denom = 1;
if (pixelwise == WINDOW_BODY_IN_REMAPPED_CHARS)
{
if (!NILP (Vface_remapping_alist))
{
int face_id = lookup_named_face (NULL, f, Qdefault, true);
struct face *face = FACE_FROM_ID_OR_NULL (f, face_id);
if (face && face->font)
{
if (face->font->average_width)
denom = face->font->average_width;
else if (face->font->space_width)
denom = face->font->space_width;
}
}
/* For performance, use canonical chars if no face remapping. */
else
pixelwise = WINDOW_BODY_IN_CANONICAL_CHARS;
}
if (pixelwise == WINDOW_BODY_IN_CANONICAL_CHARS)
denom = FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w));
/* Don't return a negative value. */
return max (width / denom, 0);
}
DEFUN ("window-body-width", Fwindow_body_width, Swindow_body_width, 0, 2, 0,
doc: /* Return the width of WINDOW's text area.
WINDOW must be a live window and defaults to the selected one. The
return value does not include any vertical dividers, fringes or
marginal areas, or scroll bars.
The optional argument PIXELWISE defines the units to use for the
width. If nil, return the largest integer smaller than WINDOW's pixel
width in units of the character width of WINDOW's frame. If PIXELWISE
is `remap' and the default face is remapped (see
`face-remapping-alist'), use the remapped face to determine the
character width. For any other non-nil value, return the width in
pixels.
Note that the returned value includes the column reserved for the
continuation glyph.
Also see `window-max-chars-per-line'. */)
(Lisp_Object window, Lisp_Object pixelwise)
{
return (make_fixnum
(window_body_width (decode_live_window (window),
window_body_unit_from_symbol (pixelwise))));
}
DEFUN ("window-body-height", Fwindow_body_height, Swindow_body_height, 0, 2, 0,
doc: /* Return the height of WINDOW's text area.
WINDOW must be a live window and defaults to the selected one. The
return value does not include the mode line or header line or any
horizontal divider.
The optional argument PIXELWISE defines the units to use for the
height. If nil, return the largest integer smaller than WINDOW's
pixel height in units of the character height of WINDOW's frame. If
PIXELWISE is `remap' and the default face is remapped (see
`face-remapping-alist'), use the remapped face to determine the
character height. For any other non-nil value, return the height in
pixels. */)
(Lisp_Object window, Lisp_Object pixelwise)
{
return (make_fixnum
(window_body_height (decode_live_window (window),
window_body_unit_from_symbol (pixelwise))));
}
DEFUN ("window-old-body-pixel-width",
Fwindow_old_body_pixel_width,
Swindow_old_body_pixel_width, 0, 1, 0,
doc: /* Return old width of WINDOW's text area in pixels.
WINDOW must be a live window and defaults to the selected one.
The return value is the pixel width of WINDOW's text area after the
last time window change functions found WINDOW live on its frame. It
is zero if WINDOW was created after that. */)
(Lisp_Object window)
{
return (make_fixnum
(decode_live_window (window)->old_body_pixel_width));
}
DEFUN ("window-old-body-pixel-height",
Fwindow_old_body_pixel_height,
Swindow_old_body_pixel_height, 0, 1, 0,
doc: /* Return old height of WINDOW's text area in pixels.
WINDOW must be a live window and defaults to the selected one.
The return value is the pixel height of WINDOW's text area after the
last time window change functions found WINDOW live on its frame. It
is zero if WINDOW was created after that. */)
(Lisp_Object window)
{
return (make_fixnum
(decode_live_window (window)->old_body_pixel_height));
}
DEFUN ("window-mode-line-height", Fwindow_mode_line_height,
Swindow_mode_line_height, 0, 1, 0,
doc: /* Return the height in pixels of WINDOW's mode-line.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_MODE_LINE_HEIGHT (decode_live_window (window)));
}
DEFUN ("window-header-line-height", Fwindow_header_line_height,
Swindow_header_line_height, 0, 1, 0,
doc: /* Return the height in pixels of WINDOW's header-line.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_HEADER_LINE_HEIGHT (decode_live_window (window)));
}
DEFUN ("window-tab-line-height", Fwindow_tab_line_height,
Swindow_tab_line_height, 0, 1, 0,
doc: /* Return the height in pixels of WINDOW's tab-line.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_TAB_LINE_HEIGHT (decode_live_window (window)));
}
DEFUN ("window-right-divider-width", Fwindow_right_divider_width,
Swindow_right_divider_width, 0, 1, 0,
doc: /* Return the width in pixels of WINDOW's right divider.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_RIGHT_DIVIDER_WIDTH (decode_live_window (window)));
}
DEFUN ("window-bottom-divider-width", Fwindow_bottom_divider_width,
Swindow_bottom_divider_width, 0, 1, 0,
doc: /* Return the width in pixels of WINDOW's bottom divider.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_BOTTOM_DIVIDER_WIDTH (decode_live_window (window)));
}
DEFUN ("window-scroll-bar-width", Fwindow_scroll_bar_width,
Swindow_scroll_bar_width, 0, 1, 0,
doc: /* Return the width in pixels of WINDOW's vertical scrollbar.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_SCROLL_BAR_AREA_WIDTH (decode_live_window (window)));
}
DEFUN ("window-scroll-bar-height", Fwindow_scroll_bar_height,
Swindow_scroll_bar_height, 0, 1, 0,
doc: /* Return the height in pixels of WINDOW's horizontal scrollbar.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (WINDOW_SCROLL_BAR_AREA_HEIGHT (decode_live_window (window)));
}
DEFUN ("window-hscroll", Fwindow_hscroll, Swindow_hscroll, 0, 1, 0,
doc: /* Return the number of columns by which WINDOW is scrolled from left margin.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return make_fixnum (decode_live_window (window)->hscroll);
}
/* Set W's horizontal scroll amount to HSCROLL clipped to a reasonable
range, returning the new amount as a fixnum. */
static Lisp_Object
set_window_hscroll (struct window *w, EMACS_INT hscroll)
{
/* Horizontal scrolling has problems with large scroll amounts.
It's too slow with long lines, and even with small lines the
display can be messed up. For now, though, impose only the limits
required by the internal representation: horizontal scrolling must
fit in fixnum (since it's visible to Elisp) and into ptrdiff_t
(since it's stored in a ptrdiff_t). */
ptrdiff_t hscroll_max = min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX);
ptrdiff_t new_hscroll = clip_to_bounds (0, hscroll, hscroll_max);
/* Prevent redisplay shortcuts when changing the hscroll. */
if (w->hscroll != new_hscroll)
{
XBUFFER (w->contents)->prevent_redisplay_optimizations_p = true;
wset_redisplay (w);
}
w->hscroll = new_hscroll;
w->suspend_auto_hscroll = true;
return make_fixnum (new_hscroll);
}
DEFUN ("set-window-hscroll", Fset_window_hscroll, Sset_window_hscroll, 2, 2, 0,
doc: /* Set number of columns WINDOW is scrolled from left margin to NCOL.
WINDOW must be a live window and defaults to the selected one.
Clip the number to a reasonable value if out of range.
Return the new number. NCOL should be zero or positive.
Note that if `auto-hscroll-mode' is non-nil, you cannot scroll the
window so that the location of point moves off-window. */)
(Lisp_Object window, Lisp_Object ncol)
{
CHECK_FIXNUM (ncol);
return set_window_hscroll (decode_live_window (window), XFIXNUM (ncol));
}
/* Test if the character at column X, row Y is within window W.
If it is not, return ON_NOTHING;
if it is on the window's vertical divider, return
ON_RIGHT_DIVIDER;
if it is on the window's horizontal divider, return
ON_BOTTOM_DIVIDER;
if it is in the window's text area, return ON_TEXT;
if it is on the window's modeline, return ON_MODE_LINE;
if it is on the border between the window and its right sibling,
return ON_VERTICAL_BORDER;
if it is on a scroll bar, return ON_SCROLL_BAR;
if it is on the window's top line, return ON_TAB_LINE;
if it is on the window's header line, return ON_HEADER_LINE;
if it is in left or right fringe of the window,
return ON_LEFT_FRINGE or ON_RIGHT_FRINGE;
if it is in the marginal area to the left/right of the window,
return ON_LEFT_MARGIN or ON_RIGHT_MARGIN.
X and Y are frame relative pixel coordinates. */
static enum window_part
coordinates_in_window (register struct window *w, int x, int y)
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
enum window_part part;
int ux = FRAME_COLUMN_WIDTH (f);
int left_x = WINDOW_LEFT_EDGE_X (w);
int right_x = WINDOW_RIGHT_EDGE_X (w);
int top_y = WINDOW_TOP_EDGE_Y (w);
int bottom_y = WINDOW_BOTTOM_EDGE_Y (w);
/* The width of the area where the vertical line can be dragged.
(Between mode lines for instance. */
int grabbable_width = ux;
int lmargin_width, rmargin_width, text_left, text_right;
/* Outside any interesting row or column? */
if (y < top_y || y >= bottom_y || x < left_x || x >= right_x)
return ON_NOTHING;
/* On the horizontal window divider (which prevails the vertical
divider)? */
if (WINDOW_BOTTOM_DIVIDER_WIDTH (w) > 0
&& y >= (bottom_y - WINDOW_BOTTOM_DIVIDER_WIDTH (w))
&& y <= bottom_y)
return ON_BOTTOM_DIVIDER;
/* On vertical window divider? */
else if (!WINDOW_RIGHTMOST_P (w)
&& WINDOW_RIGHT_DIVIDER_WIDTH (w) > 0
&& x >= right_x - WINDOW_RIGHT_DIVIDER_WIDTH (w)
&& x <= right_x)
return ON_RIGHT_DIVIDER;
/* On the horizontal scroll bar? (Including the empty space at its
right!) */
else if ((WINDOW_HAS_HORIZONTAL_SCROLL_BAR (w)
&& y >= (bottom_y
- WINDOW_SCROLL_BAR_AREA_HEIGHT (w)
- CURRENT_MODE_LINE_HEIGHT (w)
- WINDOW_BOTTOM_DIVIDER_WIDTH (w))
&& y <= (bottom_y
- CURRENT_MODE_LINE_HEIGHT (w)
- WINDOW_BOTTOM_DIVIDER_WIDTH (w))))
return ON_HORIZONTAL_SCROLL_BAR;
/* On the mode or header/tab line? */
else if ((window_wants_mode_line (w)
&& y >= (bottom_y
- CURRENT_MODE_LINE_HEIGHT (w)
- WINDOW_BOTTOM_DIVIDER_WIDTH (w))
&& y <= bottom_y - WINDOW_BOTTOM_DIVIDER_WIDTH (w)
&& (part = ON_MODE_LINE))
|| (window_wants_tab_line (w)
&& y < top_y + CURRENT_TAB_LINE_HEIGHT (w)
&& (part = ON_TAB_LINE))
|| (window_wants_header_line (w)
&& y < top_y + CURRENT_HEADER_LINE_HEIGHT (w)
+ (window_wants_tab_line (w)
? CURRENT_TAB_LINE_HEIGHT (w)
: 0)
&& (part = ON_HEADER_LINE)))
{
/* If it's under/over the scroll bar portion of the mode/header
line, say it's on the vertical line. That's to be able to
resize windows horizontally in case we're using toolkit scroll
bars. Note: If scrollbars are on the left, the window that
must be eventually resized is that on the left of WINDOW. */
if ((WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0)
&& ((WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w)
&& !WINDOW_LEFTMOST_P (w)
&& eabs (x - left_x) < grabbable_width)
|| (!WINDOW_HAS_VERTICAL_SCROLL_BAR_ON_LEFT (w)
&& !WINDOW_RIGHTMOST_P (w)
&& eabs (x - right_x) < grabbable_width)))
return ON_VERTICAL_BORDER;
else
return part;
}
/* In what's below, we subtract 1 when computing right_x because we
want the rightmost pixel, which is given by left_pixel+width-1. */
if (w->pseudo_window_p)
{
left_x = 0;
right_x = WINDOW_PIXEL_WIDTH (w) - 1;
}
else
{
left_x = WINDOW_BOX_LEFT_EDGE_X (w);
right_x = WINDOW_BOX_RIGHT_EDGE_X (w) - 1;
}
/* Outside any interesting column? */
if (x < left_x || x > right_x)
return ON_VERTICAL_SCROLL_BAR;
lmargin_width = window_box_width (w, LEFT_MARGIN_AREA);
rmargin_width = window_box_width (w, RIGHT_MARGIN_AREA);
text_left = window_box_left (w, TEXT_AREA);
text_right = text_left + window_box_width (w, TEXT_AREA);
if (FRAME_WINDOW_P (f))
{
if (!w->pseudo_window_p
&& WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0
&& !WINDOW_HAS_VERTICAL_SCROLL_BAR (w)
&& !WINDOW_RIGHTMOST_P (w)
&& (eabs (x - right_x) < grabbable_width))
return ON_VERTICAL_BORDER;
}
/* Need to say "x > right_x" rather than >=, since on character
terminals, the vertical line's x coordinate is right_x. */
else if (!w->pseudo_window_p
&& WINDOW_RIGHT_DIVIDER_WIDTH (w) == 0
&& !WINDOW_RIGHTMOST_P (w)
/* Why check ux if we are not the rightmost window? Also
shouldn't a pseudo window always be rightmost? */
&& x > right_x - ux)
return ON_VERTICAL_BORDER;
if (x < text_left)
{
if (lmargin_width > 0
&& (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? (x >= left_x + WINDOW_LEFT_FRINGE_WIDTH (w))
: (x < left_x + lmargin_width)))
return ON_LEFT_MARGIN;
else
return ON_LEFT_FRINGE;
}
if (x >= text_right)
{
if (rmargin_width > 0
&& (WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w)
? (x < right_x - WINDOW_RIGHT_FRINGE_WIDTH (w))
: (x >= right_x - rmargin_width)))
return ON_RIGHT_MARGIN;
else
return ON_RIGHT_FRINGE;
}
/* Everything special ruled out - must be on text area */
return ON_TEXT;
}
/* Take X is the frame-relative pixel x-coordinate, and return the
x-coordinate relative to part PART of window W. */
int
window_relative_x_coord (struct window *w, enum window_part part, int x)
{
int left_x = (w->pseudo_window_p) ? 0 : WINDOW_BOX_LEFT_EDGE_X (w);
switch (part)
{
case ON_TEXT:
return x - window_box_left (w, TEXT_AREA);
case ON_TAB_LINE:
case ON_HEADER_LINE:
case ON_MODE_LINE:
case ON_LEFT_FRINGE:
return x - left_x;
case ON_RIGHT_FRINGE:
return x - left_x - WINDOW_LEFT_FRINGE_WIDTH (w);
case ON_LEFT_MARGIN:
return (x - left_x
- ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w))
? WINDOW_LEFT_FRINGE_WIDTH (w) : 0));
case ON_RIGHT_MARGIN:
return (x + 1
- ((w->pseudo_window_p)
? WINDOW_PIXEL_WIDTH (w)
: WINDOW_BOX_RIGHT_EDGE_X (w))
+ window_box_width (w, RIGHT_MARGIN_AREA)
+ ((WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w))
? WINDOW_RIGHT_FRINGE_WIDTH (w) : 0));
case ON_NOTHING:
case ON_VERTICAL_BORDER:
case ON_VERTICAL_SCROLL_BAR:
case ON_HORIZONTAL_SCROLL_BAR:
case ON_RIGHT_DIVIDER:
case ON_BOTTOM_DIVIDER:
return 0;
default:
emacs_abort ();
}
}
DEFUN ("coordinates-in-window-p", Fcoordinates_in_window_p,
Scoordinates_in_window_p, 2, 2, 0,
doc: /* Return non-nil if COORDINATES are in WINDOW.
WINDOW must be a live window and defaults to the selected one.
COORDINATES is a cons of the form (X . Y), X and Y being distances
measured in characters from the upper-left corner of the frame.
\(0 . 0) denotes the character in the upper left corner of the
frame.
If COORDINATES are in the text portion of WINDOW,
the coordinates relative to the window are returned.
If they are in the bottom divider of WINDOW, `bottom-divider' is returned.
If they are in the right divider of WINDOW, `right-divider' is returned.
If they are in the mode line of WINDOW, `mode-line' is returned.
If they are in the header line of WINDOW, `header-line' is returned.
If they are in the tab line of WINDOW, `tab-line' is returned.
If they are in the left fringe of WINDOW, `left-fringe' is returned.
If they are in the right fringe of WINDOW, `right-fringe' is returned.
If they are on the border between WINDOW and its right sibling,
`vertical-line' is returned.
If they are in the windows's left or right marginal areas, `left-margin'\n\
or `right-margin' is returned. */)
(register Lisp_Object coordinates, Lisp_Object window)
{
struct window *w;
struct frame *f;
int x, y;
Lisp_Object lx, ly;
w = decode_live_window (window);
f = XFRAME (w->frame);
CHECK_CONS (coordinates);
lx = Fcar (coordinates);
ly = Fcdr (coordinates);
CHECK_NUMBER (lx);
CHECK_NUMBER (ly);
x = FRAME_PIXEL_X_FROM_CANON_X (f, lx) + FRAME_INTERNAL_BORDER_WIDTH (f);
y = FRAME_PIXEL_Y_FROM_CANON_Y (f, ly) + FRAME_INTERNAL_BORDER_WIDTH (f);
switch (coordinates_in_window (w, x, y))
{
case ON_NOTHING:
return Qnil;
case ON_TEXT:
/* Convert X and Y to window relative pixel coordinates, and
return the canonical char units. */
x -= window_box_left (w, TEXT_AREA);
y -= WINDOW_TOP_EDGE_Y (w);
return Fcons (FRAME_CANON_X_FROM_PIXEL_X (f, x),
FRAME_CANON_Y_FROM_PIXEL_Y (f, y));
case ON_MODE_LINE:
return Qmode_line;
case ON_VERTICAL_BORDER:
return Qvertical_line;
case ON_HEADER_LINE:
return Qheader_line;
case ON_TAB_LINE:
return Qtab_line;
case ON_LEFT_FRINGE:
return Qleft_fringe;
case ON_RIGHT_FRINGE:
return Qright_fringe;
case ON_LEFT_MARGIN:
return Qleft_margin;
case ON_RIGHT_MARGIN:
return Qright_margin;
case ON_VERTICAL_SCROLL_BAR:
/* Historically we are supposed to return nil in this case. */
return Qnil;
case ON_HORIZONTAL_SCROLL_BAR:
return Qnil;
case ON_RIGHT_DIVIDER:
return Qright_divider;
case ON_BOTTOM_DIVIDER:
return Qbottom_divider;
default:
emacs_abort ();
}
}
/* Callback for foreach_window, used in window_from_coordinates.
Check if window W contains coordinates specified by USER_DATA which
is actually a pointer to a struct check_window_data CW.
Check if window W contains coordinates *CW->x and *CW->y. If it
does, return W in *CW->window, as Lisp_Object, and return in
*CW->part the part of the window under coordinates *X,*Y. Return
false from this function to stop iterating over windows. */
struct check_window_data
{
Lisp_Object *window;
int x, y;
enum window_part *part;
};
static bool
check_window_containing (struct window *w, void *user_data)
{
struct check_window_data *cw = user_data;
enum window_part found = coordinates_in_window (w, cw->x, cw->y);
if (found == ON_NOTHING)
return true;
else
{
*cw->part = found;
XSETWINDOW (*cw->window, w);
return false;
}
}
/* Find the window containing frame-relative pixel position X/Y and
return it as a Lisp_Object.
If X, Y is on one of the window's special `window_part' elements,
set *PART to the id of that element.
If there is no window under X, Y return nil and leave *PART
unmodified. TOOL_BAR_P means detect tool-bar windows, and
TAB_BAR_P means detect tab-bar windows.
This function was previously implemented with a loop cycling over
windows with Fnext_window, and starting with the frame's selected
window. It turned out that this doesn't work with an
implementation of next_window using Vwindow_list, because
FRAME_SELECTED_WINDOW (F) is not always contained in the window
tree of F when this function is called asynchronously from
note_mouse_highlight. The original loop didn't terminate in this
case. */
Lisp_Object
window_from_coordinates (struct frame *f, int x, int y,
enum window_part *part, bool menu_bar_p,
bool tab_bar_p, bool tool_bar_p)
{
Lisp_Object window;
struct check_window_data cw;
enum window_part dummy;
if (part == 0)
part = &dummy;
window = Qnil;
cw.window = &window, cw.x = x, cw.y = y; cw.part = part;
foreach_window (f, check_window_containing, &cw);
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (HAVE_EXT_MENU_BAR)
/* If not found above, see if it's in the menu bar window, if a menu
bar exists. */
if (NILP (window)
&& menu_bar_p
&& WINDOWP (f->menu_bar_window)
&& WINDOW_TOTAL_LINES (XWINDOW (f->menu_bar_window)) > 0
&& (coordinates_in_window (XWINDOW (f->menu_bar_window), x, y)
!= ON_NOTHING))
{
*part = ON_TEXT;
window = f->menu_bar_window;
}
#endif
#if defined (HAVE_WINDOW_SYSTEM)
/* If not found above, see if it's in the tab bar window, if a tab
bar exists. */
if (NILP (window)
&& tab_bar_p
&& WINDOWP (f->tab_bar_window)
&& WINDOW_TOTAL_LINES (XWINDOW (f->tab_bar_window)) > 0
&& (coordinates_in_window (XWINDOW (f->tab_bar_window), x, y)
!= ON_NOTHING))
{
*part = ON_TEXT;
window = f->tab_bar_window;
}
#endif
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (HAVE_EXT_TOOL_BAR)
/* If not found above, see if it's in the tool bar window, if a tool
bar exists. */
if (NILP (window)
&& tool_bar_p
&& WINDOWP (f->tool_bar_window)
&& WINDOW_TOTAL_LINES (XWINDOW (f->tool_bar_window)) > 0
&& (coordinates_in_window (XWINDOW (f->tool_bar_window), x, y)
!= ON_NOTHING))
{
*part = ON_TEXT;
window = f->tool_bar_window;
}
#endif
return window;
}
DEFUN ("window-at", Fwindow_at, Swindow_at, 2, 3, 0,
doc: /* Return window containing coordinates X and Y on FRAME.
FRAME must be a live frame and defaults to the selected one.
X and Y are measured in units of canonical columns and rows.
The top left corner of the frame is considered to be column 0, row 0.
Tool-bar and tab-bar pseudo-windows are ignored by this function: if
the specified coordinates are in any of these two windows, this
function returns nil. */)
(Lisp_Object x, Lisp_Object y, Lisp_Object frame)
{
struct frame *f = decode_live_frame (frame);
CHECK_NUMBER (x);
CHECK_NUMBER (y);
return window_from_coordinates (f,
(FRAME_PIXEL_X_FROM_CANON_X (f, x)
+ FRAME_INTERNAL_BORDER_WIDTH (f)),
(FRAME_PIXEL_Y_FROM_CANON_Y (f, y)
+ FRAME_INTERNAL_BORDER_WIDTH (f)),
0, false, false, false);
}
ptrdiff_t
window_point (struct window *w)
{
return (w == XWINDOW (selected_window)
? BUF_PT (XBUFFER (w->contents))
: XMARKER (w->pointm)->charpos);
}
DEFUN ("window-point", Fwindow_point, Swindow_point, 0, 1, 0,
doc: /* Return current value of point in WINDOW.
WINDOW must be a live window and defaults to the selected one.
For a nonselected window, this is the value point would have if that
window were selected.
Note that, when WINDOW is selected, the value returned is the same as
that returned by `point' for WINDOW's buffer. It would be more strictly
correct to return the top-level value of `point', outside of any
`save-excursion' forms. But that is hard to define. */)
(Lisp_Object window)
{
return make_fixnum (window_point (decode_live_window (window)));
}
DEFUN ("window-old-point", Fwindow_old_point, Swindow_old_point, 0, 1, 0,
doc: /* Return old value of point in WINDOW.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return Fmarker_position (decode_live_window (window)->old_pointm);
}
DEFUN ("window-start", Fwindow_start, Swindow_start, 0, 1, 0,
doc: /* Return position at which display currently starts in WINDOW.
WINDOW must be a live window and defaults to the selected one.
This is updated by redisplay or by calling `set-window-start'. */)
(Lisp_Object window)
{
return Fmarker_position (decode_live_window (window)->start);
}
/* This is text temporarily removed from the doc string below.
This function returns nil if the position is not currently known.
That happens when redisplay is preempted and doesn't finish.
If in that case you want to compute where the end of the window would
have been if redisplay had finished, do this:
(save-excursion
(goto-char (window-start window))
(vertical-motion (1- (window-height window)) window)
(point))") */
DEFUN ("window-end", Fwindow_end, Swindow_end, 0, 2, 0,
doc: /* Return position at which display currently ends in WINDOW.
This is the position after the final character in WINDOW.
WINDOW must be a live window and defaults to the selected one. This
is updated by redisplay, when it runs to completion. Simply changing
the buffer text or setting `window-start' does not update this value.
Return nil if there is no recorded value. (This can happen if the
last redisplay of WINDOW was preempted, and did not finish.) If
UPDATE is non-nil, compute the up-to-date position if it isn't already
recorded. */)
(Lisp_Object window, Lisp_Object update)
{
Lisp_Object value;
struct window *w = decode_live_window (window);
Lisp_Object buf;
struct buffer *b;
buf = w->contents;
CHECK_BUFFER (buf);
b = XBUFFER (buf);
if (! NILP (update)
&& (windows_or_buffers_changed
|| !w->window_end_valid
|| b->clip_changed
|| b->prevent_redisplay_optimizations_p
|| window_outdated (w))
/* Don't call display routines if we didn't yet create any real
frames, because the glyph matrices are not yet allocated in
that case. This could happen in some code that runs in the
daemon during initialization (e.g., see bug#20565). */
&& !(noninteractive || FRAME_INITIAL_P (WINDOW_XFRAME (w))))
{
struct text_pos startp;
struct it it;
struct buffer *old_buffer = NULL;
void *itdata = NULL;
/* Cannot use Fvertical_motion because that function doesn't
cope with variable-height lines. */
if (b != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal (b);
}
/* In case W->start is out of the range, use something
reasonable. This situation occurred when loading a file with
`-l' containing a call to `rmail' with subsequent other
commands. At the end, W->start happened to be BEG, while
rmail had already narrowed the buffer. */
CLIP_TEXT_POS_FROM_MARKER (startp, w->start);
itdata = bidi_shelve_cache ();
start_display (&it, w, startp);
move_it_vertically (&it, window_box_height (w));
if (it.current_y < it.last_visible_y)
move_it_past_eol (&it);
value = make_fixnum (IT_CHARPOS (it));
bidi_unshelve_cache (itdata, false);
if (old_buffer)
set_buffer_internal (old_buffer);
}
else
XSETINT (value, BUF_Z (b) - w->window_end_pos);
return value;
}
DEFUN ("set-window-point", Fset_window_point, Sset_window_point, 2, 2, 0,
doc: /* Make point value in WINDOW be at position POS in WINDOW's buffer.
WINDOW must be a live window and defaults to the selected one.
Return POS. */)
(Lisp_Object window, Lisp_Object pos)
{
register struct window *w = decode_live_window (window);
/* Type of POS is checked by Fgoto_char or set_marker_restricted ... */
if (w == XWINDOW (selected_window))
{
if (XBUFFER (w->contents) == current_buffer)
Fgoto_char (pos);
else
{
struct buffer *old_buffer = current_buffer;
/* ... but here we want to catch type error before buffer change. */
CHECK_FIXNUM_COERCE_MARKER (pos);
set_buffer_internal (XBUFFER (w->contents));
Fgoto_char (pos);
set_buffer_internal (old_buffer);
}
}
else
{
set_marker_restricted (w->pointm, pos, w->contents);
/* We have to make sure that redisplay updates the window to show
the new value of point. */
wset_redisplay (w);
}
return pos;
}
DEFUN ("set-window-start", Fset_window_start, Sset_window_start, 2, 3, 0,
doc: /* Make display in WINDOW start at position POS in WINDOW's buffer.
WINDOW must be a live window and defaults to the selected one. Return
POS.
Optional third arg NOFORCE non-nil prevents next redisplay from
moving point if displaying the window at POS makes point invisible;
redisplay will then choose the WINDOW's start position by itself in
that case, i.e. it will disregard POS if adhering to it will make
point not visible in the window.
For reliable setting of WINDOW start position, make sure point is
at a position that will be visible when that start is in effect,
otherwise there's a chance POS will be disregarded, e.g., if point
winds up in a partially-visible line.
The setting of the WINDOW's start position takes effect during the
next redisplay cycle, not immediately. If NOFORCE is nil or
omitted, forcing the display of WINDOW to start at POS cancels
any setting of WINDOW's vertical scroll (\"vscroll\") amount
set by `set-window-vscroll' and by scrolling functions. */)
(Lisp_Object window, Lisp_Object pos, Lisp_Object noforce)
{
register struct window *w = decode_live_window (window);
set_marker_restricted (w->start, pos, w->contents);
/* This is not right, but much easier than doing what is right. */
w->start_at_line_beg = false;
if (NILP (noforce))
w->force_start = true;
wset_update_mode_line (w);
/* Bug#15957. */
w->window_end_valid = false;
wset_redisplay (w);
return pos;
}
DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p,
Spos_visible_in_window_p, 0, 3, 0,
doc: /* Return non-nil if position POS is currently on the frame in WINDOW.
WINDOW must be a live window and defaults to the selected one.
Return nil if that position is scrolled vertically out of view. If a
character is only partially visible, nil is returned, unless the
optional argument PARTIALLY is non-nil. If POS is only out of view
because of horizontal scrolling, return non-nil. If POS is t, it
specifies either the first position displayed on the last visible
screen line in WINDOW, or the end-of-buffer position, whichever comes
first. POS defaults to point in WINDOW; WINDOW defaults to the
selected window.
If POS is visible, return t if PARTIALLY is nil; if PARTIALLY is non-nil,
the return value is a list of 2 or 6 elements (X Y [RTOP RBOT ROWH VPOS]),
where X and Y are the pixel coordinates relative to the top left corner
of the window. The remaining elements are omitted if the character after
POS is fully visible; otherwise, RTOP and RBOT are the number of pixels
off-window at the top and bottom of the screen line ("row") containing
POS, ROWH is the visible height of that row, and VPOS is the row number
\(zero-based). */)
(Lisp_Object pos, Lisp_Object window, Lisp_Object partially)
{
struct window *w;
EMACS_INT posint;
struct buffer *buf;
struct text_pos top;
Lisp_Object in_window = Qnil;
int rtop, rbot, rowh, vpos;
bool fully_p = true;
int x, y;
w = decode_live_window (window);
buf = XBUFFER (w->contents);
SET_TEXT_POS_FROM_MARKER (top, w->start);
if (EQ (pos, Qt))
posint = -1;
else if (!NILP (pos))
posint = fix_position (pos);
else if (w == XWINDOW (selected_window))
posint = PT;
else
posint = marker_position (w->pointm);
/* If position is above window start or outside buffer boundaries,
or if window start is out of range, position is not visible. */
if ((EQ (pos, Qt)
|| (posint >= CHARPOS (top) && posint <= BUF_ZV (buf)))
&& CHARPOS (top) >= BUF_BEGV (buf)
&& CHARPOS (top) <= BUF_ZV (buf)
&& pos_visible_p (w, posint, &x, &y, &rtop, &rbot, &rowh, &vpos))
{
fully_p = !rtop && !rbot;
if (!NILP (partially) || fully_p)
in_window = Qt;
}
if (!NILP (in_window) && !NILP (partially))
{
Lisp_Object part = Qnil;
if (!fully_p)
part = list4i (rtop, rbot, rowh, vpos);
in_window = Fcons (make_fixnum (x),
Fcons (make_fixnum (y), part));
}
return in_window;
}
DEFUN ("window-line-height", Fwindow_line_height,
Swindow_line_height, 0, 2, 0,
doc: /* Return height in pixels of text line LINE in window WINDOW.
WINDOW must be a live window and defaults to the selected one.
Return height of current line if LINE is omitted or nil. Return height of
header or mode line if LINE is `header-line' or `mode-line'.
Otherwise, LINE is a text line number starting from 0. A negative number
counts from the end of the window.
Value is a list (HEIGHT VPOS YPOS OFFBOT), where HEIGHT is the height
in pixels of the visible part of the line, VPOS and YPOS are the
vertical position in lines and pixels of the line, relative to the top
of the first text line, and OFFBOT is the number of off-window pixels at
the bottom of the text line. If there are off-window pixels at the top
of the (first) text line, YPOS is negative.
Return nil if window display is not up-to-date. In that case, use
`pos-visible-in-window-p' to obtain the information. */)
(Lisp_Object line, Lisp_Object window)
{
register struct window *w;
register struct buffer *b;
struct glyph_row *row, *end_row;
int max_y, crop, i;
EMACS_INT n;
w = decode_live_window (window);
if (noninteractive || w->pseudo_window_p)
return Qnil;
CHECK_BUFFER (w->contents);
b = XBUFFER (w->contents);
/* Fail if current matrix is not up-to-date. */
if (!w->window_end_valid
|| windows_or_buffers_changed
|| b->clip_changed
|| b->prevent_redisplay_optimizations_p
|| window_outdated (w))
return Qnil;
if (NILP (line))
{
i = w->cursor.vpos;
if (i < 0 || i >= w->current_matrix->nrows
|| (row = MATRIX_ROW (w->current_matrix, i), !row->enabled_p))
return Qnil;
max_y = window_text_bottom_y (w);
goto found_row;
}
if (EQ (line, Qtab_line))
{
if (!window_wants_tab_line (w))
return Qnil;
row = MATRIX_TAB_LINE_ROW (w->current_matrix);
return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil;
}
if (EQ (line, Qheader_line))
{
if (!window_wants_header_line (w))
return Qnil;
row = MATRIX_HEADER_LINE_ROW (w->current_matrix);
return row->enabled_p ? list4i (row->height, 0, 0, 0) : Qnil;
}
if (EQ (line, Qmode_line))
{
row = MATRIX_MODE_LINE_ROW (w->current_matrix);
return (row->enabled_p ?
list4i (row->height,
0, /* not accurate */
(WINDOW_TAB_LINE_HEIGHT (w)
+ WINDOW_HEADER_LINE_HEIGHT (w)
+ window_text_bottom_y (w)),
0)
: Qnil);
}
CHECK_FIXNUM (line);
n = XFIXNUM (line);
row = MATRIX_FIRST_TEXT_ROW (w->current_matrix);
end_row = MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w);
max_y = window_text_bottom_y (w);
i = 0;
while ((n < 0 || i < n)
&& row <= end_row && row->enabled_p
&& row->y + row->height < max_y)
row++, i++;
if (row > end_row || !row->enabled_p)
return Qnil;
if (++n < 0)
{
if (-n > i)
return Qnil;
row += n;
i += n;
}
found_row:
crop = max (0, (row->y + row->height) - max_y);
return list4i (row->height + min (0, row->y) - crop, i, row->y, crop);
}
DEFUN ("window-lines-pixel-dimensions", Fwindow_lines_pixel_dimensions, Swindow_lines_pixel_dimensions, 0, 6, 0,
doc: /* Return pixel dimensions of WINDOW's lines.
The return value is a list of the x- and y-coordinates of the lower
right corner of the last character of each line. Return nil if the
current glyph matrix of WINDOW is not up-to-date.
Optional argument WINDOW specifies the window whose lines' dimensions
shall be returned. Nil or omitted means to return the dimensions for
the selected window.
FIRST, if non-nil, specifies the index of the first line whose
dimensions shall be returned. If FIRST is nil and BODY is non-nil,
start with the first text line of WINDOW. Otherwise, start with the
first line of WINDOW.
LAST, if non-nil, specifies the last line whose dimensions shall be
returned. If LAST is nil and BODY is non-nil, the last line is the last
line of the body (text area) of WINDOW. Otherwise, last is the last
line of WINDOW.
INVERSE, if nil, means that the y-pixel value returned for a specific
line specifies the distance in pixels from the left edge (body edge if
BODY is non-nil) of WINDOW to the right edge of the last glyph of that
line. INVERSE non-nil means that the y-pixel value returned for a
specific line specifies the distance in pixels from the right edge of
the last glyph of that line to the right edge (body edge if BODY is
non-nil) of WINDOW.
LEFT non-nil means to return the x- and y-coordinates of the lower left
corner of the leftmost character on each line. This is the value that
should be used for buffers that mostly display text from right to left.
If LEFT is non-nil and INVERSE is nil, this means that the y-pixel value
returned for a specific line specifies the distance in pixels from the
left edge of the last (leftmost) glyph of that line to the right edge
(body edge if BODY is non-nil) of WINDOW. If LEFT and INVERSE are both
non-nil, the y-pixel value returned for a specific line specifies the
distance in pixels from the left edge (body edge if BODY is non-nil) of
WINDOW to the left edge of the last (leftmost) glyph of that line.
Normally, the value of this function is not available while Emacs is
busy, for example, when processing a command. It should be retrievable
though when run from an idle timer with a delay of zero seconds. */)
(Lisp_Object window, Lisp_Object first, Lisp_Object last, Lisp_Object body, Lisp_Object inverse, Lisp_Object left)
{
struct window *w = decode_live_window (window);
struct buffer *b;
struct glyph_row *row, *end_row;
int max_y = NILP (body) ? WINDOW_PIXEL_HEIGHT (w) : window_text_bottom_y (w);
Lisp_Object rows = Qnil;
int window_width = NILP (body)
? w->pixel_width : window_body_width (w, WINDOW_BODY_IN_PIXELS);
int tab_line_height = WINDOW_TAB_LINE_HEIGHT (w);
int header_line_height = WINDOW_HEADER_LINE_HEIGHT (w);
int subtract = NILP (body) ? 0 : (tab_line_height + header_line_height);
bool invert = !NILP (inverse);
bool left_flag = !NILP (left);
if (noninteractive || w->pseudo_window_p)
return Qnil;
CHECK_BUFFER (w->contents);
b = XBUFFER (w->contents);
/* Fail if current matrix is not up-to-date. */
if (!w->window_end_valid
|| windows_or_buffers_changed
|| b->clip_changed
|| b->prevent_redisplay_optimizations_p
|| window_outdated (w))
return Qnil;
row = (!NILP (first)
? MATRIX_ROW (w->current_matrix,
check_integer_range (first, 0,
w->current_matrix->nrows))
: NILP (body)
? MATRIX_ROW (w->current_matrix, 0)
: MATRIX_FIRST_TEXT_ROW (w->current_matrix));
end_row = (!NILP (last)
? MATRIX_ROW (w->current_matrix,
check_integer_range (last, 0,
w->current_matrix->nrows))
: NILP (body)
? MATRIX_ROW (w->current_matrix, w->current_matrix->nrows)
: MATRIX_BOTTOM_TEXT_ROW (w->current_matrix, w));
while (row <= end_row && row->enabled_p
&& row->y + row->height < max_y)
{
if (left_flag)
{
struct glyph *glyph = row->glyphs[TEXT_AREA];
rows = Fcons (Fcons (make_fixnum
(invert
? glyph->pixel_width
: window_width - glyph->pixel_width),
make_fixnum (row->y + row->height - subtract)),
rows);
}
else
rows = Fcons (Fcons (make_fixnum
(invert
? window_width - row->pixel_width
: row->pixel_width),
make_fixnum (row->y + row->height - subtract)),
rows);
row++;
}
return Fnreverse (rows);
}
DEFUN ("window-dedicated-p", Fwindow_dedicated_p, Swindow_dedicated_p,
0, 1, 0,
doc: /* Return non-nil when WINDOW is dedicated to its buffer.
More precisely, return the value assigned by the last call of
`set-window-dedicated-p' for WINDOW. Return nil if that function was
never called with WINDOW as its argument, or the value set by that
function was internally reset since its last call. WINDOW must be a
live window and defaults to the selected one.
When a window is dedicated to its buffer, `display-buffer' will refrain
from displaying another buffer in it. `get-lru-window' and
`get-largest-window' treat dedicated windows specially.
`delete-windows-on', `replace-buffer-in-windows', `quit-window' and
`kill-buffer' can delete a dedicated window and the containing frame.
Functions like `set-window-buffer' may change the buffer displayed by a
window, unless that window is "strongly" dedicated to its buffer, that
is the value returned by `window-dedicated-p' is t. */)
(Lisp_Object window)
{
return decode_live_window (window)->dedicated;
}
DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p,
Sset_window_dedicated_p, 2, 2, 0,
doc: /* Mark WINDOW as dedicated according to FLAG.
WINDOW must be a live window and defaults to the selected one. FLAG
non-nil means mark WINDOW as dedicated to its buffer. FLAG nil means
mark WINDOW as non-dedicated. Return FLAG.
When a window is dedicated to its buffer, `display-buffer' will refrain
from displaying another buffer in it. `get-lru-window' and
`get-largest-window' treat dedicated windows specially.
`delete-windows-on', `replace-buffer-in-windows', `quit-window',
`quit-restore-window' and `kill-buffer' can delete a dedicated window
and the containing frame.
As a special case, if FLAG is t, mark WINDOW as "strongly" dedicated to
its buffer. Functions like `set-window-buffer' may change the buffer
displayed by a window, unless that window is strongly dedicated to its
buffer. If and when `set-window-buffer' displays another buffer in a
window, it also makes sure that the window is no more dedicated. */)
(Lisp_Object window, Lisp_Object flag)
{
wset_dedicated (decode_live_window (window), flag);
return flag;
}
DEFUN ("window-prev-buffers", Fwindow_prev_buffers, Swindow_prev_buffers,
0, 1, 0,
doc: /* Return buffers previously shown in WINDOW.
WINDOW must be a live window and defaults to the selected one.
The return value is a list of elements (BUFFER WINDOW-START POS),
where BUFFER is a buffer, WINDOW-START is the start position of the
window for that buffer, and POS is a window-specific point value. */)
(Lisp_Object window)
{
return decode_live_window (window)->prev_buffers;
}
DEFUN ("set-window-prev-buffers", Fset_window_prev_buffers,
Sset_window_prev_buffers, 2, 2, 0,
doc: /* Set WINDOW's previous buffers to PREV-BUFFERS.
WINDOW must be a live window and defaults to the selected one.
PREV-BUFFERS should be a list of elements (BUFFER WINDOW-START POS),
where BUFFER is a buffer, WINDOW-START is the start position of the
window for that buffer, and POS is a window-specific point value. */)
(Lisp_Object window, Lisp_Object prev_buffers)
{
wset_prev_buffers (decode_live_window (window), prev_buffers);
return prev_buffers;
}
DEFUN ("window-next-buffers", Fwindow_next_buffers, Swindow_next_buffers,
0, 1, 0,
doc: /* Return list of buffers recently re-shown in WINDOW.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return decode_live_window (window)->next_buffers;
}
DEFUN ("set-window-next-buffers", Fset_window_next_buffers,
Sset_window_next_buffers, 2, 2, 0,
doc: /* Set WINDOW's next buffers to NEXT-BUFFERS.
WINDOW must be a live window and defaults to the selected one.
NEXT-BUFFERS should be a list of buffers. */)
(Lisp_Object window, Lisp_Object next_buffers)
{
wset_next_buffers (decode_live_window (window), next_buffers);
return next_buffers;
}
DEFUN ("window-parameters", Fwindow_parameters, Swindow_parameters,
0, 1, 0,
doc: /* Return the parameters of WINDOW and their values.
WINDOW must be a valid window and defaults to the selected one. The
return value is a list of elements of the form (PARAMETER . VALUE). */)
(Lisp_Object window)
{
return Fcopy_alist (decode_valid_window (window)->window_parameters);
}
Lisp_Object
window_parameter (struct window *w, Lisp_Object parameter)
{
Lisp_Object result = assq_no_quit (parameter, w->window_parameters);
return CDR_SAFE (result);
}
DEFUN ("window-parameter", Fwindow_parameter, Swindow_parameter,
2, 2, 0,
doc: /* Return WINDOW's value for PARAMETER.
WINDOW can be any window and defaults to the selected one. */)
(Lisp_Object window, Lisp_Object parameter)
{
struct window *w = decode_any_window (window);
return window_parameter (w, parameter);
}
DEFUN ("set-window-parameter", Fset_window_parameter,
Sset_window_parameter, 3, 3, 0,
doc: /* Set WINDOW's value of PARAMETER to VALUE.
WINDOW can be any window and defaults to the selected one.
Return VALUE. */)
(Lisp_Object window, Lisp_Object parameter, Lisp_Object value)
{
register struct window *w = decode_any_window (window);
Lisp_Object old_alist_elt;
old_alist_elt = Fassq (parameter, w->window_parameters);
if (NILP (old_alist_elt))
wset_window_parameters
(w, Fcons (Fcons (parameter, value), w->window_parameters));
else
Fsetcdr (old_alist_elt, value);
return value;
}
DEFUN ("window-display-table", Fwindow_display_table, Swindow_display_table,
0, 1, 0,
doc: /* Return the display-table that WINDOW is using.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return decode_live_window (window)->display_table;
}
/* Get the display table for use on window W. This is either W's
display table or W's buffer's display table. Ignore the specified
tables if they are not valid; if no valid table is specified,
return 0. */
struct Lisp_Char_Table *
window_display_table (struct window *w)
{
struct Lisp_Char_Table *dp = NULL;
if (DISP_TABLE_P (w->display_table))
dp = XCHAR_TABLE (w->display_table);
else if (BUFFERP (w->contents))
{
struct buffer *b = XBUFFER (w->contents);
if (DISP_TABLE_P (BVAR (b, display_table)))
dp = XCHAR_TABLE (BVAR (b, display_table));
else if (DISP_TABLE_P (Vstandard_display_table))
dp = XCHAR_TABLE (Vstandard_display_table);
}
return dp;
}
DEFUN ("set-window-display-table", Fset_window_display_table, Sset_window_display_table, 2, 2, 0,
doc: /* Set WINDOW's display-table to TABLE.
WINDOW must be a live window and defaults to the selected one. */)
(register Lisp_Object window, Lisp_Object table)
{
wset_display_table (decode_live_window (window), table);
return table;
}
\f
/* Record info on buffer window W is displaying
when it is about to cease to display that buffer. */
static void
unshow_buffer (register struct window *w)
{
Lisp_Object buf = w->contents;
struct buffer *b = XBUFFER (buf);
eassert (b == XMARKER (w->pointm)->buffer);
#if false
if (w == XWINDOW (selected_window)
|| ! EQ (buf, XWINDOW (selected_window)->contents))
/* Do this except when the selected window's buffer
is being removed from some other window. */
#endif
/* last_window_start records the start position that this buffer
had in the last window to be disconnected from it.
Now that this statement is unconditional,
it is possible for the buffer to be displayed in the
selected window, while last_window_start reflects another
window which was recently showing the same buffer.
Some people might say that might be a good thing. Let's see. */
b->last_window_start = marker_position (w->start);
/* Point in the selected window's buffer
is actually stored in that buffer, and the window's pointm isn't used.
So don't clobber point in that buffer. */
if (! EQ (buf, XWINDOW (selected_window)->contents)
/* Don't clobber point in current buffer either (this could be
useful in connection with bug#12208).
&& XBUFFER (buf) != current_buffer */
/* This line helps to fix Horsley's testbug.el bug. */
&& !(WINDOWP (BVAR (b, last_selected_window))
&& w != XWINDOW (BVAR (b, last_selected_window))
&& EQ (buf, XWINDOW (BVAR (b, last_selected_window))->contents)))
temp_set_point_both (b,
clip_to_bounds (BUF_BEGV (b),
marker_position (w->pointm),
BUF_ZV (b)),
clip_to_bounds (BUF_BEGV_BYTE (b),
marker_byte_position (w->pointm),
BUF_ZV_BYTE (b)));
if (WINDOWP (BVAR (b, last_selected_window))
&& w == XWINDOW (BVAR (b, last_selected_window)))
bset_last_selected_window (b, Qnil);
}
/* Put NEW into the window structure in place of OLD. SETFLAG false
means change window structure only. Otherwise store geometry and
other settings as well. */
static void
replace_window (Lisp_Object old, Lisp_Object new, bool setflag)
{
Lisp_Object tem;
struct window *o = XWINDOW (old), *n = XWINDOW (new);
/* If OLD is its frame's root window, then NEW is the new
root window for that frame. */
if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame))))
fset_root_window (XFRAME (o->frame), new);
if (setflag)
{
n->pixel_left = o->pixel_left;
n->pixel_top = o->pixel_top;
n->pixel_width = o->pixel_width;
n->pixel_height = o->pixel_height;
n->left_col = o->left_col;
n->top_line = o->top_line;
n->total_cols = o->total_cols;
n->total_lines = o->total_lines;
wset_normal_cols (n, o->normal_cols);
wset_normal_cols (o, make_float (1.0));
wset_normal_lines (n, o->normal_lines);
wset_normal_lines (o, make_float (1.0));
n->desired_matrix = n->current_matrix = 0;
n->vscroll = 0;
memset (&n->cursor, 0, sizeof (n->cursor));
memset (&n->phys_cursor, 0, sizeof (n->phys_cursor));
n->last_cursor_vpos = 0;
#ifdef HAVE_WINDOW_SYSTEM
n->phys_cursor_type = NO_CURSOR;
n->phys_cursor_width = -1;
#endif
n->must_be_updated_p = false;
n->pseudo_window_p = false;
n->window_end_vpos = 0;
n->window_end_pos = 0;
n->window_end_valid = false;
}
tem = o->next;
wset_next (n, tem);
if (!NILP (tem))
wset_prev (XWINDOW (tem), new);
tem = o->prev;
wset_prev (n, tem);
if (!NILP (tem))
wset_next (XWINDOW (tem), new);
tem = o->parent;
wset_parent (n, tem);
if (!NILP (tem) && EQ (XWINDOW (tem)->contents, old))
wset_combination (XWINDOW (tem), XWINDOW (tem)->horizontal, new);
}
/* If window WINDOW and its parent window are iso-combined, merge
WINDOW's children into those of its parent window and mark WINDOW as
deleted. */
static void
recombine_windows (Lisp_Object window)
{
struct window *w, *p, *c;
Lisp_Object parent, child;
bool horflag;
w = XWINDOW (window);
parent = w->parent;
if (!NILP (parent) && NILP (w->combination_limit))
{
p = XWINDOW (parent);
if (WINDOWP (p->contents) && WINDOWP (w->contents)
&& p->horizontal == w->horizontal)
/* WINDOW and PARENT are both either a vertical or a horizontal
combination. */
{
horflag = WINDOW_HORIZONTAL_COMBINATION_P (w);
child = w->contents;
c = XWINDOW (child);
/* Splice WINDOW's children into its parent's children and
assign new normal sizes. */
if (NILP (w->prev))
wset_combination (p, horflag, child);
else
{
wset_prev (c, w->prev);
wset_next (XWINDOW (w->prev), child);
}
while (c)
{
wset_parent (c, parent);
if (horflag)
wset_normal_cols
(c, make_float ((double) c->pixel_width
/ (double) p->pixel_width));
else
wset_normal_lines
(c, make_float ((double) c->pixel_height
/ (double) p->pixel_height));
if (NILP (c->next))
{
if (!NILP (w->next))
{
wset_next (c, w->next);
wset_prev (XWINDOW (c->next), child);
}
c = 0;
}
else
{
child = c->next;
c = XWINDOW (child);
}
}
/* WINDOW can be deleted now. */
wset_combination (w, false, Qnil);
}
}
}
/* If WINDOW can be deleted, delete it. */
static void
delete_deletable_window (Lisp_Object window)
{
if (!NILP (call1 (Qwindow_deletable_p, window)))
call1 (Qdelete_window, window);
}
\f
/***********************************************************************
Window List
***********************************************************************/
/* Add window W to *USER_DATA. USER_DATA is actually a Lisp_Object
pointer. This is a callback function for foreach_window, used in
the window_list function. */
static bool
add_window_to_list (struct window *w, void *user_data)
{
Lisp_Object *list = user_data;
Lisp_Object window;
XSETWINDOW (window, w);
*list = Fcons (window, *list);
return true;
}
/* Return a list of all windows, for use by next_window. If
Vwindow_list is a list, return that list. Otherwise, build a new
list, cache it in Vwindow_list, and return that. */
Lisp_Object
window_list (void)
{
if (!CONSP (Vwindow_list))
{
Lisp_Object tail, frame;
specpdl_ref count = SPECPDL_INDEX ();
Vwindow_list = Qnil;
/* Don't allow quitting in Fnconc. Otherwise we might end up
with a too short Vwindow_list and Fkill_buffer not being able
to replace a buffer in all windows showing it (Bug#47244). */
specbind (Qinhibit_quit, Qt);
FOR_EACH_FRAME (tail, frame)
{
Lisp_Object arglist = Qnil;
/* We are visiting windows in canonical order, and add
new windows at the front of arglist, which means we
have to reverse this list at the end. */
foreach_window (XFRAME (frame), add_window_to_list, &arglist);
arglist = Fnreverse (arglist);
Vwindow_list = nconc2 (Vwindow_list, arglist);
}
unbind_to (count, Qnil);
}
return Vwindow_list;
}
/* Value is true if WINDOW satisfies the constraints given by
OWINDOW, MINIBUF and ALL_FRAMES.
MINIBUF t means WINDOW may be minibuffer windows.
`lambda' means WINDOW may not be a minibuffer window.
a window means a specific minibuffer window
ALL_FRAMES t means search all frames,
nil means search just current frame,
`visible' means search just visible frames on the
current terminal,
0 means search visible and iconified frames on the
current terminal,
a window means search the frame that window belongs to,
a frame means consider windows on that frame, only. */
static bool
candidate_window_p (Lisp_Object window, Lisp_Object owindow,
Lisp_Object minibuf, Lisp_Object all_frames)
{
struct window *w = XWINDOW (window);
struct frame *f = XFRAME (w->frame);
bool candidate_p = true;
if (!BUFFERP (w->contents))
candidate_p = false;
else if (MINI_WINDOW_P (w)
&& (EQ (minibuf, Qlambda)
|| (WINDOW_LIVE_P (minibuf) && !EQ (minibuf, window))))
{
/* If MINIBUF is `lambda' don't consider any mini-windows.
If it is a window, consider only that one. */
candidate_p = false;
}
else if (EQ (all_frames, Qt))
candidate_p = true;
else if (NILP (all_frames))
{
eassert (WINDOWP (owindow));
candidate_p = EQ (w->frame, XWINDOW (owindow)->frame);
}
else if (EQ (all_frames, Qvisible))
{
candidate_p = FRAME_VISIBLE_P (f)
&& (FRAME_TERMINAL (XFRAME (w->frame))
== FRAME_TERMINAL (XFRAME (selected_frame)));
}
else if (FIXNUMP (all_frames) && XFIXNUM (all_frames) == 0)
{
candidate_p = (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f)
#ifdef HAVE_X_WINDOWS
/* Yuck!! If we've just created the frame and the
window-manager requested the user to place it
manually, the window may still not be considered
`visible'. I'd argue it should be at least
something like `iconified', but don't know how to do
that yet. --Stef */
|| (FRAME_X_P (f) && f->output_data.x->asked_for_visible
&& !f->output_data.x->has_been_visible)
#endif
)
&& (FRAME_TERMINAL (XFRAME (w->frame))
== FRAME_TERMINAL (XFRAME (selected_frame)));
}
else if (WINDOWP (all_frames))
/* To qualify as candidate, it's not sufficient for WINDOW's frame
to just share the minibuffer window - it must be active as well
(see Bug#24500). */
candidate_p = ((EQ (XWINDOW (all_frames)->frame, w->frame)
|| (EQ (f->minibuffer_window, all_frames)
&& EQ (XWINDOW (all_frames)->frame, FRAME_FOCUS_FRAME (f))))
&& (EQ (minibuf, Qt)
|| !is_minibuffer (0, XWINDOW (all_frames)->contents)));
else if (FRAMEP (all_frames))
candidate_p = EQ (all_frames, w->frame);
return candidate_p;
}
/* Decode arguments as allowed by Fnext_window, Fprevious_window, and
Fwindow_list. See candidate_window_p for the meaning of WINDOW,
MINIBUF, and ALL_FRAMES. */
static void
decode_next_window_args (Lisp_Object *window, Lisp_Object *minibuf, Lisp_Object *all_frames)
{
struct window *w = decode_live_window (*window);
Lisp_Object miniwin = XFRAME (w->frame)->minibuffer_window;
XSETWINDOW (*window, w);
/* MINIBUF nil may or may not include minibuffer windows. Decide if
it does. But first make sure that this frame's minibuffer window
is live (Bug#47207). */
if (WINDOW_LIVE_P (miniwin) && NILP (*minibuf))
*minibuf = (this_minibuffer_depth (XWINDOW (miniwin)->contents)
? miniwin : Qlambda);
else if (!EQ (*minibuf, Qt))
*minibuf = Qlambda;
/* Now *MINIBUF can be t => count all minibuffer windows, `lambda'
=> count none of them, or a specific minibuffer window (the
active one) to count. */
/* ALL_FRAMES nil doesn't specify which frames to include. */
if (NILP (*all_frames))
*all_frames
/* Once more make sure that this frame's minibuffer window is live
before including it (Bug#47207). */
= ((WINDOW_LIVE_P (miniwin) && !EQ (*minibuf, Qlambda))
? miniwin : Qnil);
else if (EQ (*all_frames, Qvisible))
;
else if (BASE_EQ (*all_frames, make_fixnum (0)))
;
else if (FRAMEP (*all_frames))
;
else if (!EQ (*all_frames, Qt))
*all_frames = Qnil;
}
/* Return the next or previous window of WINDOW in cyclic ordering
of windows. NEXT_P means return the next window. See the
documentation string of next-window for the meaning of MINIBUF and
ALL_FRAMES. */
static Lisp_Object
next_window (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames,
bool next_p)
{
specpdl_ref count = SPECPDL_INDEX ();
decode_next_window_args (&window, &minibuf, &all_frames);
/* If ALL_FRAMES is a frame, and WINDOW isn't on that frame, just
return the first window on the frame. */
if (FRAMEP (all_frames)
&& !EQ (all_frames, XWINDOW (window)->frame))
return Fframe_first_window (all_frames);
/* Don't allow quitting in Fmemq. */
specbind (Qinhibit_quit, Qt);
if (next_p)
{
Lisp_Object list;
/* Find WINDOW in the list of all windows. */
list = Fmemq (window, window_list ());
/* Scan forward from WINDOW to the end of the window list. */
if (CONSP (list))
for (list = XCDR (list); CONSP (list); list = XCDR (list))
if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
break;
/* Scan from the start of the window list up to WINDOW. */
if (!CONSP (list))
for (list = Vwindow_list;
CONSP (list) && !EQ (XCAR (list), window);
list = XCDR (list))
if (candidate_window_p (XCAR (list), window, minibuf, all_frames))
break;
if (CONSP (list))
window = XCAR (list);
}
else
{
Lisp_Object candidate, list;
/* Scan through the list of windows for candidates. If there are
candidate windows in front of WINDOW, the last one of these
is the one we want. If there are candidates following WINDOW
in the list, again the last one of these is the one we want. */
candidate = Qnil;
for (list = window_list (); CONSP (list); list = XCDR (list))
{
if (EQ (XCAR (list), window))
{
if (WINDOWP (candidate))
break;
}
else if (candidate_window_p (XCAR (list), window, minibuf,
all_frames))
candidate = XCAR (list);
}
if (WINDOWP (candidate))
window = candidate;
}
unbind_to (count, Qnil);
return window;
}
DEFUN ("next-window", Fnext_window, Snext_window, 0, 3, 0,
doc: /* Return live window after WINDOW in the cyclic ordering of windows.
WINDOW must be a live window and defaults to the selected one. The
optional arguments MINIBUF and ALL-FRAMES specify the set of windows to
consider.
MINIBUF nil or omitted means consider the minibuffer window only if the
minibuffer is active. MINIBUF t means consider the minibuffer window
even if the minibuffer is not active. Any other value means do not
consider the minibuffer window even if the minibuffer is active.
ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame,
plus the minibuffer window if specified by the MINIBUF argument. If the
minibuffer counts, consider all windows on all frames that share that
minibuffer too. The following non-nil values of ALL-FRAMES have special
meanings:
- t means consider all windows on all existing frames.
- `visible' means consider all windows on all visible frames.
- 0 (the number zero) means consider all windows on all visible and
iconified frames.
- A frame means consider all windows on that frame only.
Anything else means consider all windows on WINDOW's frame and no
others.
If you use consistent values for MINIBUF and ALL-FRAMES, you can use
`next-window' to iterate through the entire cycle of acceptable
windows, eventually ending up back at the window you started with.
`previous-window' traverses the same cycle, in the reverse order. */)
(Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
{
return next_window (window, minibuf, all_frames, true);
}
DEFUN ("previous-window", Fprevious_window, Sprevious_window, 0, 3, 0,
doc: /* Return live window before WINDOW in the cyclic ordering of windows.
WINDOW must be a live window and defaults to the selected one. The
optional arguments MINIBUF and ALL-FRAMES specify the set of windows to
consider.
MINIBUF nil or omitted means consider the minibuffer window only if the
minibuffer is active. MINIBUF t means consider the minibuffer window
even if the minibuffer is not active. Any other value means do not
consider the minibuffer window even if the minibuffer is active.
ALL-FRAMES nil or omitted means consider all windows on WINDOW's frame,
plus the minibuffer window if specified by the MINIBUF argument. If the
minibuffer counts, consider all windows on all frames that share that
minibuffer too. The following non-nil values of ALL-FRAMES have special
meanings:
- t means consider all windows on all existing frames.
- `visible' means consider all windows on all visible frames.
- 0 (the number zero) means consider all windows on all visible and
iconified frames.
- A frame means consider all windows on that frame only.
Anything else means consider all windows on WINDOW's frame and no
others.
If you use consistent values for MINIBUF and ALL-FRAMES, you can
use `previous-window' to iterate through the entire cycle of
acceptable windows, eventually ending up back at the window you
started with. `next-window' traverses the same cycle, in the
reverse order. */)
(Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
{
return next_window (window, minibuf, all_frames, false);
}
/* Return a list of windows in cyclic ordering. Arguments are like
for `next-window'. */
static Lisp_Object
window_list_1 (Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
{
Lisp_Object tail, list, rest;
specpdl_ref count = SPECPDL_INDEX ();
decode_next_window_args (&window, &minibuf, &all_frames);
list = Qnil;
/* Don't allow quitting in Fmemq and Fnconc. */
specbind (Qinhibit_quit, Qt);
for (tail = window_list (); CONSP (tail); tail = XCDR (tail))
if (candidate_window_p (XCAR (tail), window, minibuf, all_frames))
list = Fcons (XCAR (tail), list);
/* Rotate the list to start with WINDOW. */
list = Fnreverse (list);
rest = Fmemq (window, list);
if (!NILP (rest) && !EQ (rest, list))
{
for (tail = list; !EQ (XCDR (tail), rest); tail = XCDR (tail))
;
XSETCDR (tail, Qnil);
list = nconc2 (rest, list);
}
unbind_to (count, Qnil);
return list;
}
DEFUN ("window-list", Fwindow_list, Swindow_list, 0, 3, 0,
doc: /* Return a list of windows on FRAME, starting with WINDOW.
FRAME nil or omitted means use the selected frame.
WINDOW nil or omitted means use the window selected within FRAME.
MINIBUF t means include the minibuffer window, even if it isn't active.
MINIBUF nil or omitted means include the minibuffer window only
if it's active.
MINIBUF neither nil nor t means never include the minibuffer window. */)
(Lisp_Object frame, Lisp_Object minibuf, Lisp_Object window)
{
if (NILP (window))
window = FRAMEP (frame) ? XFRAME (frame)->selected_window : selected_window;
CHECK_WINDOW (window);
if (NILP (frame))
frame = selected_frame;
if (!EQ (frame, XWINDOW (window)->frame))
error ("Window is on a different frame");
return window_list_1 (window, minibuf, frame);
}
DEFUN ("window-list-1", Fwindow_list_1, Swindow_list_1, 0, 3, 0,
doc: /* Return a list of all live windows.
WINDOW specifies the first window to list and defaults to the selected
window.
Optional argument MINIBUF nil or omitted means consider the minibuffer
window only if the minibuffer is active. MINIBUF t means consider the
minibuffer window even if the minibuffer is not active. Any other value
means do not consider the minibuffer window even if the minibuffer is
active.
Optional argument ALL-FRAMES nil or omitted means consider all windows
on WINDOW's frame, plus the minibuffer window if specified by the
MINIBUF argument. If the minibuffer counts, consider all windows on all
frames that share that minibuffer too. The following non-nil values of
ALL-FRAMES have special meanings:
- t means consider all windows on all existing frames.
- `visible' means consider all windows on all visible frames.
- 0 (the number zero) means consider all windows on all visible and
iconified frames.
- A frame means consider all windows on that frame only.
Anything else means consider all windows on WINDOW's frame and no
others.
If WINDOW is not on the list of windows returned, some other window will
be listed first but no error is signaled. */)
(Lisp_Object window, Lisp_Object minibuf, Lisp_Object all_frames)
{
return window_list_1 (window, minibuf, all_frames);
}
\f
/* Look at all windows, performing an operation specified by TYPE
with argument OBJ.
If FRAMES is Qt, look at all frames;
Qnil, look at just the selected frame;
Qvisible, look at visible frames;
a frame, just look at windows on that frame.
If MINI, perform the operation on minibuffer windows too. */
enum window_loop
{
WINDOW_LOOP_UNUSED,
GET_BUFFER_WINDOW, /* Arg is buffer */
REPLACE_BUFFER_IN_WINDOWS_SAFELY, /* Arg is buffer */
REDISPLAY_BUFFER_WINDOWS, /* Arg is buffer */
CHECK_ALL_WINDOWS /* Arg is ignored */
};
static Lisp_Object
window_loop (enum window_loop type, Lisp_Object obj, bool mini,
Lisp_Object frames)
{
Lisp_Object window, windows, best_window, frame_arg;
bool frame_best_window_flag = false;
struct frame *f;
/* If we're only looping through windows on a particular frame,
frame points to that frame. If we're looping through windows
on all frames, frame is 0. */
if (FRAMEP (frames))
f = XFRAME (frames);
else if (NILP (frames))
f = SELECTED_FRAME ();
else
f = NULL;
if (f)
frame_arg = Qlambda;
else if (BASE_EQ (frames, make_fixnum (0)))
frame_arg = frames;
else if (EQ (frames, Qvisible))
frame_arg = frames;
else
frame_arg = Qt;
/* frame_arg is Qlambda to stick to one frame,
Qvisible to consider all visible frames,
or Qt otherwise. */
/* Pick a window to start with. */
if (WINDOWP (obj))
window = obj;
else if (f)
window = FRAME_SELECTED_WINDOW (f);
else
window = FRAME_SELECTED_WINDOW (SELECTED_FRAME ());
windows = window_list_1 (window, mini ? Qt : Qnil, frame_arg);
best_window = Qnil;
for (; CONSP (windows); windows = XCDR (windows))
{
struct window *w;
window = XCAR (windows);
w = XWINDOW (window);
/* Note that we do not pay attention here to whether the frame
is visible, since Fwindow_list skips non-visible frames if
that is desired, under the control of frame_arg. */
if (!MINI_WINDOW_P (w)
/* For REPLACE_BUFFER_IN_WINDOWS_SAFELY, we must always
consider all windows. */
|| type == REPLACE_BUFFER_IN_WINDOWS_SAFELY
|| (mini && minibuf_level > 0))
switch (type)
{
case GET_BUFFER_WINDOW:
if (EQ (w->contents, obj)
/* Don't find any minibuffer window except the one that
is currently in use. */
&& (!MINI_WINDOW_P (w) || EQ (window, minibuf_window)))
{
if (EQ (window, selected_window))
/* Preferably return the selected window. */
return window;
else if (EQ (XWINDOW (window)->frame, selected_frame)
&& !frame_best_window_flag)
/* Prefer windows on the current frame (but don't
choose another one if we have one already). */
{
best_window = window;
frame_best_window_flag = true;
}
else if (NILP (best_window))
best_window = window;
}
break;
case REPLACE_BUFFER_IN_WINDOWS_SAFELY:
/* We could simply check whether the buffer shown by window
is live, and show another buffer in case it isn't. */
if (EQ (w->contents, obj))
{
/* Undedicate WINDOW. */
wset_dedicated (w, Qnil);
/* Make WINDOW show the buffer returned by
other_buffer_safely, don't run any hooks. */
set_window_buffer
(window, other_buffer_safely (w->contents), false, false);
/* If WINDOW is the selected window, make its buffer
current. But do so only if the window shows the
current buffer (Bug#6454). */
if (EQ (window, selected_window)
&& XBUFFER (w->contents) == current_buffer)
Fset_buffer (w->contents);
}
break;
case REDISPLAY_BUFFER_WINDOWS:
if (EQ (w->contents, obj))
{
mark_window_display_accurate (window, false);
w->update_mode_line = true;
XBUFFER (obj)->prevent_redisplay_optimizations_p = true;
update_mode_lines = 27;
best_window = window;
}
break;
/* Check for a leaf window that has a killed buffer
or broken markers. */
case CHECK_ALL_WINDOWS:
if (BUFFERP (w->contents))
{
struct buffer *b = XBUFFER (w->contents);
if (!BUFFER_LIVE_P (b))
emacs_abort ();
if (!MARKERP (w->start) || XMARKER (w->start)->buffer != b)
emacs_abort ();
if (!MARKERP (w->pointm) || XMARKER (w->pointm)->buffer != b)
emacs_abort ();
}
break;
case WINDOW_LOOP_UNUSED:
break;
}
}
return best_window;
}
/* Used for debugging. Abort if any window has a dead buffer. */
extern void check_all_windows (void) EXTERNALLY_VISIBLE;
void
check_all_windows (void)
{
window_loop (CHECK_ALL_WINDOWS, Qnil, true, Qt);
}
DEFUN ("get-buffer-window", Fget_buffer_window, Sget_buffer_window, 0, 2, 0,
doc: /* Return a window currently displaying BUFFER-OR-NAME, or nil if none.
BUFFER-OR-NAME may be a buffer or a buffer name and defaults to
the current buffer.
The optional argument ALL-FRAMES specifies the frames to consider:
- t means consider all windows on all existing frames.
- `visible' means consider all windows on all visible frames.
- 0 (the number zero) means consider all windows on all visible
and iconified frames.
- A frame means consider all windows on that frame only.
Any other value of ALL-FRAMES means consider all windows on the
selected frame and no others. */)
(Lisp_Object buffer_or_name, Lisp_Object all_frames)
{
Lisp_Object buffer;
if (NILP (buffer_or_name))
buffer = Fcurrent_buffer ();
else
buffer = Fget_buffer (buffer_or_name);
if (BUFFERP (buffer))
return window_loop (GET_BUFFER_WINDOW, buffer, true, all_frames);
else
return Qnil;
}
static Lisp_Object
resize_root_window (Lisp_Object window, Lisp_Object delta,
Lisp_Object horizontal, Lisp_Object ignore,
Lisp_Object pixelwise)
{
return call5 (Qwindow__resize_root_window, window, delta,
horizontal, ignore, pixelwise);
}
static Lisp_Object
window_pixel_to_total (Lisp_Object frame, Lisp_Object horizontal)
{
return call2 (Qwindow__pixel_to_total, frame, horizontal);
}
/** Remove all occurrences of element whose car is BUFFER from ALIST.
Return changed ALIST. */
static Lisp_Object
window_discard_buffer_from_alist (Lisp_Object buffer, Lisp_Object alist)
{
Lisp_Object tail, *prev = &alist;
for (tail = alist; CONSP (tail); tail = XCDR (tail))
{
Lisp_Object tem = XCAR (tail);
tem = XCAR (tem);
if (EQ (tem, buffer))
*prev = XCDR (tail);
else
prev = xcdr_addr (tail);
}
return alist;
}
/** Remove all occurrences of BUFFER from LIST. Return changed
LIST. */
static Lisp_Object
window_discard_buffer_from_list (Lisp_Object buffer, Lisp_Object list)
{
Lisp_Object tail, *prev = &list;
for (tail = list; CONSP (tail); tail = XCDR (tail))
if (EQ (XCAR (tail), buffer))
*prev = XCDR (tail);
else
prev = xcdr_addr (tail);
return list;
}
/** Remove BUFFER from the lists of previous and next buffers of object
WINDOW. ALL true means remove any `quit-restore' and
`quit-restore-prev' parameter of WINDOW referencing BUFFER too. */
static void
window_discard_buffer_from_window (Lisp_Object buffer, Lisp_Object window, bool all)
{
struct window *w = XWINDOW (window);
wset_prev_buffers
(w, window_discard_buffer_from_alist (buffer, w->prev_buffers));
wset_next_buffers
(w, window_discard_buffer_from_list (buffer, w->next_buffers));
if (all)
{
Lisp_Object quit_restore = window_parameter (w, Qquit_restore);
Lisp_Object quit_restore_prev = window_parameter (w, Qquit_restore_prev);
Lisp_Object quad;
if (EQ (buffer, Fnth (make_fixnum (3), quit_restore_prev))
|| (CONSP (quad = Fcar (Fcdr (quit_restore_prev)))
&& EQ (Fcar (quad), buffer)))
Fset_window_parameter (window, Qquit_restore_prev, Qnil);
if (EQ (buffer, Fnth (make_fixnum (3), quit_restore))
|| (CONSP (quad = Fcar (Fcdr (quit_restore)))
&& EQ (Fcar (quad), buffer)))
{
Fset_window_parameter (window, Qquit_restore,
window_parameter (w, Qquit_restore_prev));
Fset_window_parameter (window, Qquit_restore_prev, Qnil);
}
}
}
/** Remove BUFFER from the lists of previous and next buffers and the
`quit-restore' and `quit-restore-prev' parameters of any dead
WINDOW. */
void
window_discard_buffer_from_dead_windows (Lisp_Object buffer)
{
struct Lisp_Hash_Table *h = XHASH_TABLE (window_dead_windows_table);
DOHASH (h, k, v)
window_discard_buffer_from_window (buffer, v, true);
}
DEFUN ("window-discard-buffer-from-window", Fwindow_discard_buffer,
Swindow_discard_buffer, 2, 3, 0,
doc: /* Discard BUFFER from WINDOW.
Discard specified live BUFFER from the lists of previous and next
buffers of specified live WINDOW.
Optional argument ALL non-nil means discard any `quit-restore' and
`quit-restore-prev' parameters of WINDOW referencing BUFFER too. */)
(Lisp_Object buffer, Lisp_Object window, Lisp_Object all)
{
if (!BUFFER_LIVE_P (XBUFFER (buffer)))
error ("Not a live buffer");
if (!WINDOW_LIVE_P (window))
error ("Not a live window");
window_discard_buffer_from_window (buffer, window, !NILP (all));
return Qnil;
}
DEFUN ("delete-other-windows-internal", Fdelete_other_windows_internal,
Sdelete_other_windows_internal, 0, 2, "",
doc: /* Make WINDOW fill its frame.
Only the frame WINDOW is on is affected. WINDOW must be a valid window
and defaults to the selected one.
Optional argument ROOT, if non-nil, must specify an internal window such
that WINDOW is in its window subtree. If this is the case, replace ROOT
by WINDOW and leave alone any windows not part of ROOT's subtree.
When WINDOW is live try to reduce display jumps by keeping the text
previously visible in WINDOW in the same place on the frame. Doing this
depends on the value of (window-start WINDOW), so if calling this
function in a program gives strange scrolling, make sure the
window-start value is reasonable when this function is called. */)
(Lisp_Object window, Lisp_Object root)
{
struct window *w = decode_valid_window (window);
struct window *r, *s;
Lisp_Object frame = w->frame;
struct frame *f = XFRAME (frame);
Lisp_Object sibling, pwindow, delta;
Lisp_Object swindow UNINIT;
ptrdiff_t startpos UNINIT, startbyte UNINIT;
int top UNINIT;
int new_top;
bool resize_failed = false;
XSETWINDOW (window, w);
if (NILP (root))
/* ROOT is the frame's root window. */
{
root = FRAME_ROOT_WINDOW (f);
r = XWINDOW (root);
}
else
/* ROOT must be an ancestor of WINDOW. */
{
r = decode_valid_window (root);
pwindow = XWINDOW (window)->parent;
while (!NILP (pwindow))
if (EQ (pwindow, root))
break;
else
pwindow = XWINDOW (pwindow)->parent;
if (!EQ (pwindow, root))
error ("Specified root is not an ancestor of specified window");
}
if (EQ (window, root))
/* A noop. */
return Qnil;
/* I don't understand the "top > 0" part below. If we deal with a
standalone minibuffer it would have been caught by the preceding
test. */
else if (MINI_WINDOW_P (w)) /* && top > 0) */
error ("Can't expand minibuffer to full frame");
if (BUFFERP (w->contents))
{
startpos = marker_position (w->start);
startbyte = marker_byte_position (w->start);
top = (WINDOW_TOP_EDGE_LINE (w)
- FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w))));
/* Make sure WINDOW is the frame's selected window. */
if (!EQ (window, FRAME_SELECTED_WINDOW (f)))
{
if (EQ (selected_frame, frame))
Fselect_window (window, Qnil);
else
/* Do not clear f->select_mini_window_flag here. If the
last selected window on F was an active minibuffer, we
want to return to it on a later Fselect_frame. */
fset_selected_window (f, window);
}
}
else
{
/* See if the frame's selected window is a part of the window
subtree rooted at WINDOW, by finding all the selected window's
parents and comparing each one with WINDOW. If it isn't we
need a new selected window for this frame. */
swindow = FRAME_SELECTED_WINDOW (f);
while (true)
{
pwindow = swindow;
while (!NILP (pwindow) && !EQ (window, pwindow))
pwindow = XWINDOW (pwindow)->parent;
if (EQ (window, pwindow))
/* If WINDOW is an ancestor of SWINDOW, then SWINDOW is ok
as the new selected window. */
break;
else
/* Else try the previous window of SWINDOW. */
swindow = Fprevious_window (swindow, Qlambda, Qnil);
}
if (!EQ (swindow, FRAME_SELECTED_WINDOW (f)))
{
if (EQ (selected_frame, frame))
Fselect_window (swindow, Qnil);
else
fset_selected_window (f, swindow);
}
}
block_input ();
if (!FRAME_INITIAL_P (f))
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
/* We are going to free the glyph matrices of WINDOW, and with
that we might lose any information about glyph rows that have
some of their glyphs highlighted in mouse face. (These rows
are marked with a mouse_face_p flag.) If WINDOW
indeed has some glyphs highlighted in mouse face, signal to
frame's up-to-date hook that mouse highlight was overwritten,
so that it will arrange for redisplaying the highlight. */
if (EQ (hlinfo->mouse_face_window, window))
reset_mouse_highlight (hlinfo);
}
free_window_matrices (r);
fset_redisplay (f);
Vwindow_list = Qnil;
if (!WINDOW_LEAF_P (w))
{
/* Resize child windows vertically. */
XSETINT (delta, r->pixel_height - w->pixel_height);
w->pixel_top = r->pixel_top;
w->top_line = r->top_line;
resize_root_window (window, delta, Qnil, Qnil, Qt);
if (window_resize_check (w, false))
window_resize_apply (w, false);
else
{
resize_root_window (window, delta, Qnil, Qt, Qt);
if (window_resize_check (w, false))
window_resize_apply (w, false);
else
resize_failed = true;
}
/* Resize child windows horizontally. */
if (!resize_failed)
{
w->left_col = r->left_col;
w->pixel_left = r->pixel_left;
XSETINT (delta, r->pixel_width - w->pixel_width);
resize_root_window (window, delta, Qt, Qnil, Qt);
if (window_resize_check (w, true))
window_resize_apply (w, true);
else
{
resize_root_window (window, delta, Qt, Qt, Qt);
if (window_resize_check (w, true))
window_resize_apply (w, true);
else
resize_failed = true;
}
}
if (resize_failed)
/* Play safe, if we still can ... */
{
window = swindow;
w = XWINDOW (window);
}
}
/* Cleanly unlink WINDOW from window-tree. */
if (!NILP (w->prev))
/* Get SIBLING above (on the left of) WINDOW. */
{
sibling = w->prev;
s = XWINDOW (sibling);
wset_next (s, w->next);
if (!NILP (s->next))
wset_prev (XWINDOW (s->next), sibling);
}
else
/* Get SIBLING below (on the right of) WINDOW. */
{
sibling = w->next;
s = XWINDOW (sibling);
wset_prev (s, Qnil);
wset_combination (XWINDOW (w->parent),
XWINDOW (w->parent)->horizontal, sibling);
}
/* Delete ROOT and all child windows of ROOT. */
if (WINDOWP (r->contents))
{
delete_all_child_windows (r->contents);
wset_combination (r, false, Qnil);
}
replace_window (root, window, true);
/* Assign new total sizes to all windows on FRAME. We can't do that
_before_ WINDOW replaces ROOT since 'window--pixel-to-total' works
on the whole frame and thus would work on the frame's old window
configuration (Bug#51007). */
window_pixel_to_total (frame, Qnil);
window_pixel_to_total (frame, Qt);
/* This must become SWINDOW anyway ....... */
if (BUFFERP (w->contents) && !resize_failed)
{
/* Try to minimize scrolling, by setting the window start to the
point will cause the text at the old window start to be at the
same place on the frame. But don't try to do this if the
window start is outside the visible portion (as might happen
when the display is not current, due to typeahead). */
new_top = WINDOW_TOP_EDGE_LINE (w) - FRAME_TOP_MARGIN (XFRAME (WINDOW_FRAME (w)));
if (new_top != top
&& startpos >= BUF_BEGV (XBUFFER (w->contents))
&& startpos <= BUF_ZV (XBUFFER (w->contents)))
{
struct position pos;
struct buffer *obuf = current_buffer;
Fset_buffer (w->contents);
/* This computation used to temporarily move point, but that
can have unwanted side effects due to text properties. */
pos = *vmotion (startpos, startbyte, -top, w);
set_marker_both (w->start, w->contents, pos.bufpos, pos.bytepos);
w->window_end_valid = false;
w->start_at_line_beg = (pos.bytepos == BEGV_BYTE
|| FETCH_BYTE (pos.bytepos - 1) == '\n');
/* We need to do this, so that the window-scroll-functions
get called. */
w->optional_new_start = true;
/* Reset the vscroll, as redisplay will not. */
w->vscroll = 0;
w->preserve_vscroll_p = false;
set_buffer_internal (obuf);
}
}
adjust_frame_glyphs (f);
unblock_input ();
FRAME_WINDOW_CHANGE (f) = true;
return Qnil;
}
void
replace_buffer_in_windows (Lisp_Object buffer)
{
/* When kill-buffer is called early during loadup, this function is
undefined. */
if (!NILP (Ffboundp (Qreplace_buffer_in_windows)))
call1 (Qreplace_buffer_in_windows, buffer);
}
/** If BUFFER is shown in any window, safely replace it with some other
buffer in all windows of all frames, even those on other keyboards.
Do not delete any window.
This function is called by Fkill_buffer when it detects that
replacing BUFFER in some window showing BUFFER has failed. It
assumes that ‘replace-buffer-in-windows’ has removed any entry
referencing BUFFER from any window's lists of previous and next
buffers and that window's ‘quit-restore’ and 'quit-restore-prev'
parameters.
*/
void
replace_buffer_in_windows_safely (Lisp_Object buffer)
{
if (buffer_window_count (XBUFFER (buffer)))
{
Lisp_Object tail, frame;
/* A single call to window_loop won't do the job because it only
considers frames on the current keyboard. So loop manually over
frames, and handle each one. */
FOR_EACH_FRAME (tail, frame)
window_loop (REPLACE_BUFFER_IN_WINDOWS_SAFELY, buffer, true, frame);
}
}
\f
/* The following three routines are needed for running a window's
configuration change hook. */
static void
run_funs (Lisp_Object funs)
{
for (; CONSP (funs); funs = XCDR (funs))
if (!EQ (XCAR (funs), Qt))
call0 (XCAR (funs));
}
static void
select_window_norecord (Lisp_Object window)
{
if (WINDOW_LIVE_P (window))
Fselect_window (window, Qt);
}
static void
select_frame_norecord (Lisp_Object frame)
{
if (FRAME_LIVE_P (XFRAME (frame)))
Fselect_frame (frame, Qt);
}
/**
* run_window_configuration_change_hook:
*
* Run any functions on 'window-configuration-change-hook' for the
* frame specified by F. The buffer-local values are run with the
* window showing the buffer selected. The default value is run with
* the frame specified by F selected. All functions are called with
* the selected window's buffer current.
*/
static void
run_window_configuration_change_hook (struct frame *f)
{
specpdl_ref count = SPECPDL_INDEX ();
Lisp_Object frame, global_wcch
= Fdefault_value (Qwindow_configuration_change_hook);
XSETFRAME (frame, f);
if (NILP (Vrun_hooks)
|| !f->can_set_window_size
|| !f->after_make_frame)
return;
/* Use the right buffer. Matters when running the local hooks. */
if (current_buffer != XBUFFER (Fwindow_buffer (Qnil)))
{
record_unwind_current_buffer ();
Fset_buffer (Fwindow_buffer (Qnil));
}
if (SELECTED_FRAME () != f)
{
record_unwind_protect (select_frame_norecord, selected_frame);
select_frame_norecord (frame);
}
/* Look for buffer-local values. */
{
Lisp_Object windows = Fwindow_list (frame, Qlambda, Qnil);
for (; CONSP (windows); windows = XCDR (windows))
{
Lisp_Object window = XCAR (windows);
Lisp_Object buffer = Fwindow_buffer (window);
if (!NILP (Flocal_variable_p (Qwindow_configuration_change_hook,
buffer)))
{
specpdl_ref inner_count = SPECPDL_INDEX ();
record_unwind_protect (select_window_norecord, selected_window);
select_window_norecord (window);
run_funs (Fbuffer_local_value (Qwindow_configuration_change_hook,
buffer));
unbind_to (inner_count, Qnil);
}
}
}
run_funs (global_wcch);
unbind_to (count, Qnil);
}
DEFUN ("run-window-configuration-change-hook", Frun_window_configuration_change_hook,
Srun_window_configuration_change_hook, 0, 1, 0,
doc: /* Run `window-configuration-change-hook' for FRAME.
If FRAME is omitted or nil, it defaults to the selected frame.
This function should not be needed any more and will be therefore
considered obsolete. */)
(Lisp_Object frame)
{
run_window_configuration_change_hook (decode_live_frame (frame));
return Qnil;
}
DEFUN ("run-window-scroll-functions", Frun_window_scroll_functions,
Srun_window_scroll_functions, 0, 1, 0,
doc: /* Run `window-scroll-functions' for WINDOW.
If WINDOW is omitted or nil, it defaults to the selected window.
This function is called by `split-window' for the new window, after it
has established the size of the new window. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
specpdl_ref count = SPECPDL_INDEX ();
record_unwind_current_buffer ();
Fset_buffer (w->contents);
if (!NILP (Vwindow_scroll_functions))
run_hook_with_args_2 (Qwindow_scroll_functions, window,
Fmarker_position (w->start));
unbind_to (count, Qnil);
return Qnil;
}
/**
* window_sub_list:
*
* Return list of live windows constructed by traversing any window
* sub-tree rooted at WINDOW in preorder followed by right siblings of
* WINDOW. Called from outside with second argument WINDOWS nil. The
* returned list is in reverse order.
*/
static Lisp_Object
window_sub_list (Lisp_Object window, Lisp_Object windows)
{
struct window *w = XWINDOW (window);
while (w)
{
if (WINDOW_INTERNAL_P (w))
windows = window_sub_list (w->contents, windows);
else
windows = Fcons (window, windows);
window = w->next;
w = NILP (window) ? 0 : XWINDOW (window);
}
return windows;
}
/**
* window_change_record_windows:
*
* Record changes for all live windows found by traversing any window
* sub-tree rooted at WINDOW in preorder followed by any right
* siblings of WINDOW. This sets the old buffer, old pixel and old
* body pixel sizes of each live window found to the respective
* current values. It also sets the change stamp of each window found
* to STAMP. Return the number of live windows found.
*
* When not called by itself recursively, WINDOW is its frame's root
* window, STAMP is the current change stamp of WINDOW's frame and
* NUMBER is 0.
*/
static ptrdiff_t
window_change_record_windows (Lisp_Object window, int stamp, ptrdiff_t number)
{
struct window *w = XWINDOW (window);
while (w)
{
if (WINDOW_INTERNAL_P (w))
number = window_change_record_windows (w->contents, stamp, number);
else
{
number += 1;
w->change_stamp = stamp;
wset_old_buffer (w, w->contents);
w->old_pixel_width = w->pixel_width;
w->old_pixel_height = w->pixel_height;
w->old_body_pixel_width
= window_body_width (w, WINDOW_BODY_IN_PIXELS);
w->old_body_pixel_height
= window_body_height (w, WINDOW_BODY_IN_PIXELS);
}
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
return number;
}
/**
* window_change_record:
*
* For each frame that has recorded changes, record its selected
* window, update Fchange stamp, record the states of all its live
* windows via window_change_record_windows and reset its
* window_change and window_state_change flags.
*
* Record selected window in old_selected_window and selected frame in
* old_selected_frame.
*/
static void
window_change_record (void)
{
if (window_change_record_frames)
{
Lisp_Object tail, frame;
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
/* Record FRAME's selected window. */
fset_old_selected_window (f, FRAME_SELECTED_WINDOW (f));
/* Bump up FRAME's change stamp. If this wraps, make it 1 to avoid
that a new window (whose change stamp is always set to 0) gets
reported as "existing before". */
f->change_stamp += 1;
if (f->change_stamp == 0)
f->change_stamp = 1;
/* Bump up the change stamps of all live windows on this frame so
the next call of this function can tell whether any of them
"existed before" and record state for each of these windows. */
f->number_of_windows
= window_change_record_windows (f->root_window, f->change_stamp, 0);
/* Reset our flags. */
FRAME_WINDOW_CHANGE (f) = false;
FRAME_WINDOW_STATE_CHANGE (f) = false;
}
}
/* Strictly spoken we don't need old_selected_window at all - its
value is the old selected window of old_selected_frame. */
old_selected_window = selected_window;
old_selected_frame = selected_frame;
}
/**
* run_window_change_functions_1:
*
* Run window change functions specified by SYMBOL with argument
* WINDOW_OR_FRAME. If BUFFER is nil, WINDOW_OR_FRAME specifies a
* frame. In this case, run the default value of SYMBOL. Otherwise,
* WINDOW_OR_FRAME denotes a window showing BUFFER. In this case, run
* the buffer local value of SYMBOL in BUFFER, if any.
*/
static void
run_window_change_functions_1 (Lisp_Object symbol, Lisp_Object buffer,
Lisp_Object window_or_frame)
{
Lisp_Object funs = Qnil;
if (NILP (buffer))
funs = Fdefault_value (symbol);
else if (!NILP (Fassoc (symbol, BVAR (XBUFFER (buffer), local_var_alist),
Qnil)))
/* Don't run global value buffer-locally. */
funs = buffer_local_value (symbol, buffer);
while (CONSP (funs))
{
if (!EQ (XCAR (funs), Qt)
&& (NILP (buffer)
? FRAME_LIVE_P (XFRAME (window_or_frame))
: WINDOW_LIVE_P (window_or_frame)))
{
/* Any function called here may change the state of any
frame. Make sure to record changes for each live frame
in window_change_record later. */
window_change_record_frames = true;
safe_calln (XCAR (funs), window_or_frame);
}
funs = XCDR (funs);
}
}
/**
* run_window_change_functions:
*
* Run window change functions for each live frame. This function
* must be called from a "safe" position in redisplay_internal.
*
* Do not run any functions for a frame whose window_change flag is
* nil, where no window selection happened and whose window state
* change flag was not set since the last time this function was
* called. Never run any functions for tooltip frames.
*
* The change functions run are, in this order:
*
* 'window-buffer-change-functions' which are run for a window that
* changed its buffer or that was not shown the last time window
* change functions were run. The default value is also run when a
* window was deleted since the last time window change functions were
* run.
*
* `window-size-change-functions' run for a window that changed its
* body or total size, a window that changed its buffer or a window
* that was not shown the last time window change functions were run.
*
* `window-selected-change-functions' run for a window that was
* (de-)selected since the last time window change functions were run.
*
* `window-state-change-functions' run for a window for which any of
* the above three changes occurred.
*
* A buffer-local value of these functions is run if and only if the
* window for which the functions are run currently shows the buffer.
* Each call gets one argument - the window showing the buffer. This
* means that the buffer-local value of these functions may be called
* as many times as the buffer is shown on the frame.
*
* The default values of these functions are called only after all
* buffer-local values for all of these functions have been run. Each
* such call receives one argument - the frame for which a change
* occurred. Functions on `window-state-change-functions' are run
* also if the corresponding frame's window state change flag has been
* set.
*
* After the four change functions cited above have been run in the
* indicated way, functions on 'window-configuration-change-hook' are
* run. A buffer-local value is run if a window shows that buffer and
* has either changed its buffer or its body or total size or did not
* appear on this frame since the last time window change functions
* were run. The functions are called without argument and with the
* buffer's window selected. The default value is run without
* argument and with the frame for which the function is run selected.
*
* In a final step, functions on `window-state-change-hook' are run
* provided a window state change has occurred or the window state
* change flag has been set on at least one frame. Each of these
* functions is called without argument.
*
* This function does not save and restore match data. Any functions
* it calls are responsible for doing that themselves.
*
* Additionally, report changes to each frame's selected window to the
* input method in textconv.c.
*/
void
run_window_change_functions (void)
{
Lisp_Object tail, frame;
bool selected_frame_change = !EQ (selected_frame, old_selected_frame);
bool run_window_state_change_hook = false;
specpdl_ref count = SPECPDL_INDEX ();
window_change_record_frames = false;
record_unwind_protect_void (window_change_record);
specbind (Qinhibit_redisplay, Qt);
FOR_EACH_FRAME (tail, frame)
{
struct frame *f = XFRAME (frame);
Lisp_Object root = FRAME_ROOT_WINDOW (f);
bool frame_window_change = FRAME_WINDOW_CHANGE (f);
bool window_buffer_change, window_size_change;
bool frame_buffer_change = false, frame_size_change = false;
bool frame_selected_change
= (selected_frame_change
&& (EQ (frame, old_selected_frame)
|| EQ (frame, selected_frame)));
bool frame_selected_window_change
= !EQ (FRAME_OLD_SELECTED_WINDOW (f), FRAME_SELECTED_WINDOW (f));
bool frame_window_state_change = FRAME_WINDOW_STATE_CHANGE (f);
bool window_deleted = false;
Lisp_Object windows;
ptrdiff_t number_of_windows;
if (!FRAME_LIVE_P (f)
|| !f->can_set_window_size
|| !f->after_make_frame
|| FRAME_TOOLTIP_P (f)
|| !(frame_window_change
|| frame_selected_change
|| frame_selected_window_change
|| frame_window_state_change))
/* Either we are not allowed to run hooks for this frame or no
window change has been reported for it since the last time
we ran window change functions on it. */
continue;
/* Analyze windows and run buffer locals hooks in pre-order. */
windows = Fnreverse (window_sub_list (root, Qnil));
number_of_windows = 0;
/* The following loop collects all data needed to tell whether
the default value of a hook shall be run and runs any buffer
local hooks right away. */
for (; CONSP (windows); windows = XCDR (windows))
{
Lisp_Object window = XCAR (windows);
struct window *w = XWINDOW (window);
Lisp_Object buffer = WINDOW_BUFFER (w);
/* Count this window even if it has been deleted while
running a hook. */
number_of_windows += 1;
if (!WINDOW_LIVE_P (window))
continue;
/* A "buffer change" means either the window's buffer
changed or the window was not part of this frame the last
time window change functions were run for it. */
window_buffer_change =
(frame_window_change
&& (!EQ (buffer, w->old_buffer)
|| w->change_stamp != f->change_stamp));
/* A "size change" means either a buffer change or that the
total or body size of the window has changed.
Note: A buffer change implies a size change because either
this window didn't show the buffer before or this window
didn't show the buffer the last time the window change
functions were run. In either case, an application
tracing size changes in a buffer-locally fashion might
want to be informed about that change. */
window_size_change =
(frame_window_change
&& (window_buffer_change
|| w->pixel_width != w->old_pixel_width
|| w->pixel_height != w->old_pixel_height
|| (window_body_width (w, WINDOW_BODY_IN_PIXELS)
!= w->old_body_pixel_width)
|| (window_body_height (w, WINDOW_BODY_IN_PIXELS)
!= w->old_body_pixel_height)));
/* The following two are needed when running the default
values for this frame below. */
frame_buffer_change = frame_buffer_change || window_buffer_change;
frame_size_change = frame_size_change || window_size_change;
if (window_buffer_change)
run_window_change_functions_1
(Qwindow_buffer_change_functions, buffer, window);
if (window_size_change && WINDOW_LIVE_P (window))
run_window_change_functions_1
(Qwindow_size_change_functions, buffer, window);
/* This window's selection has changed when it was
(de-)selected as its frame's or the globally selected
window. */
if (((frame_selected_change
&& (EQ (window, old_selected_window)
|| EQ (window, selected_window)))
|| (frame_selected_window_change
&& (EQ (window, FRAME_OLD_SELECTED_WINDOW (f))
|| EQ (window, FRAME_SELECTED_WINDOW (f)))))
&& WINDOW_LIVE_P (window))
run_window_change_functions_1
(Qwindow_selection_change_functions, buffer, window);
/* This window's state has changed when its buffer or size
changed or it was (de-)selected as its frame's or the
globally selected window. */
if ((window_buffer_change
|| window_size_change
|| ((frame_selected_change
&& (EQ (window, old_selected_window)
|| EQ (window, selected_window)))
|| (frame_selected_window_change
&& (EQ (window, FRAME_OLD_SELECTED_WINDOW (f))
|| EQ (window, FRAME_SELECTED_WINDOW (f))))))
&& WINDOW_LIVE_P (window))
run_window_change_functions_1
(Qwindow_state_change_functions, buffer, window);
}
/* When the number of windows on a frame has decreased, at least
one window of that frame was deleted. In that case, we want
to run the default buffer and configuration change hooks. The
default size change hook is not necessarily run in that case,
but usually will be unless the deletion was "compensated" by
a reduction of the frame size or an increase of a minibuffer
window size. */
window_deleted = number_of_windows < f->number_of_windows;
/* A frame changed buffers when one of its windows has changed
its buffer or at least one window was deleted. */
if ((frame_buffer_change || window_deleted) && FRAME_LIVE_P (f))
run_window_change_functions_1
(Qwindow_buffer_change_functions, Qnil, frame);
/* A size change occurred when at least one of the frame's
windows has changed size. */
if (frame_size_change && FRAME_LIVE_P (f))
run_window_change_functions_1
(Qwindow_size_change_functions, Qnil, frame);
/* A frame has changed its window selection when its selected
window has changed or when it was (de-)selected. */
if ((frame_selected_change || frame_selected_window_change)
&& FRAME_LIVE_P (f))
run_window_change_functions_1
(Qwindow_selection_change_functions, Qnil, frame);
#if defined HAVE_TEXT_CONVERSION
/* If the buffer or selected window has changed, also reset the
input method composition state. */
if ((frame_selected_window_change || frame_buffer_change)
&& FRAME_LIVE_P (f)
&& FRAME_WINDOW_P (f))
report_selected_window_change (f);
#endif
/* A frame has changed state when a size or buffer change
occurred, its selected window has changed, when it was
(de-)selected or its window state change flag was set. */
if ((frame_selected_change || frame_selected_window_change
|| frame_buffer_change || window_deleted
|| frame_size_change || frame_window_state_change)
&& FRAME_LIVE_P (f))
{
run_window_change_functions_1
(Qwindow_state_change_functions, Qnil, frame);
/* Make sure to run 'window-state-change-hook' later. */
run_window_state_change_hook = true;
/* Make sure to record changes for each live frame in
window_change_record later. */
window_change_record_frames = true;
}
/* A frame's configuration changed when one of its windows has
changed buffer or size or at least one window was deleted. */
if ((frame_size_change || window_deleted) && FRAME_LIVE_P (f))
/* This will run any buffer local window configuration change
hook as well. */
run_window_configuration_change_hook (f);
}
/* Run 'window-state-change-hook' if at least one frame has changed
state. */
if (run_window_state_change_hook && !NILP (Vwindow_state_change_hook))
safe_run_hooks (Qwindow_state_change_hook);
/* Record changes for all frames (if asked for), selected window and
frame. */
unbind_to (count, Qnil);
}
/* Make WINDOW display BUFFER. RUN_HOOKS_P means it's allowed
to run hooks. See make_frame for a case where it's not allowed.
KEEP_MARGINS_P means that the current margins, fringes, and
scroll bar settings of the window are not reset from the buffer's
local settings. */
void
set_window_buffer (Lisp_Object window, Lisp_Object buffer,
bool run_hooks_p, bool keep_margins_p)
{
struct window *w = XWINDOW (window);
struct buffer *b = XBUFFER (buffer);
specpdl_ref count = SPECPDL_INDEX ();
bool samebuf = EQ (buffer, w->contents);
/* It's never OK to assign WINDOW a dead buffer. */
eassert (BUFFER_LIVE_P (b));
wset_buffer (w, buffer);
if (EQ (window, selected_window))
bset_last_selected_window (b, window);
/* Let redisplay errors through. */
b->display_error_modiff = 0;
/* Update time stamps of buffer display. */
if (INTEGERP (BVAR (b, display_count)))
bset_display_count (b, Fadd1 (BVAR (b, display_count)));
bset_display_time (b, Fcurrent_time ());
w->window_end_pos = 0;
w->window_end_vpos = 0;
w->last_cursor_vpos = 0;
/* Discard BUFFER from WINDOW's previous and next buffers. */
window_discard_buffer_from_window (buffer, window, false);
if (!(keep_margins_p && samebuf))
{ /* If we're not actually changing the buffer, don't reset hscroll
and vscroll. Resetting hscroll and vscroll here is problematic
for things like image-mode and doc-view-mode since it resets
the image's position whenever we resize the frame. */
w->hscroll = w->min_hscroll = w->hscroll_whole = 0;
w->suspend_auto_hscroll = false;
w->vscroll = 0;
set_marker_both (w->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b));
set_marker_both (w->old_pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b));
set_marker_restricted (w->start,
make_fixnum (b->last_window_start),
buffer);
w->start_at_line_beg = false;
w->force_start = false;
/* Flush the base_line cache since it applied to another buffer. */
w->base_line_number = 0;
}
wset_redisplay (w);
wset_update_mode_line (w);
/* We must select BUFFER to run the window-scroll-functions and to look up
the buffer-local value of Vwindow_point_insertion_type. */
record_unwind_current_buffer ();
Fset_buffer (buffer);
XMARKER (w->pointm)->insertion_type = !NILP (Vwindow_point_insertion_type);
XMARKER (w->old_pointm)->insertion_type = !NILP (Vwindow_point_insertion_type);
if (!keep_margins_p)
{
/* Set fringes and scroll bars from buffer unless they have been
declared as persistent. */
if (!w->fringes_persistent)
set_window_fringes (w, BVAR (b, left_fringe_width),
BVAR (b, right_fringe_width),
BVAR (b, fringes_outside_margins), Qnil);
if (!w->scroll_bars_persistent)
set_window_scroll_bars (w, BVAR (b, scroll_bar_width),
BVAR (b, vertical_scroll_bar_type),
BVAR (b, scroll_bar_height),
BVAR (b, horizontal_scroll_bar_type), Qnil);
/* Set left and right marginal area width from buffer. */
set_window_margins (w, BVAR (b, left_margin_cols),
BVAR (b, right_margin_cols));
apply_window_adjustment (w);
}
if (run_hooks_p && !NILP (Vwindow_scroll_functions))
run_hook_with_args_2 (Qwindow_scroll_functions, window,
Fmarker_position (w->start));
/* Ensure that window change functions are run later if the buffer
differs and the window is neither a mini nor a pseudo window.
Note: Running window change functions for the minibuffer is noisy
and was generally suppressed in the past. Is there any reason we
should run them? */
if (!samebuf && !MINI_WINDOW_P (w) && !WINDOW_PSEUDO_P (w))
FRAME_WINDOW_CHANGE (XFRAME (w->frame)) = true;
unbind_to (count, Qnil);
}
DEFUN ("set-window-buffer", Fset_window_buffer, Sset_window_buffer, 2, 3, 0,
doc: /* Make WINDOW display BUFFER-OR-NAME.
WINDOW must be a live window and defaults to the selected one.
BUFFER-OR-NAME must be a buffer or the name of an existing buffer.
Optional third argument KEEP-MARGINS non-nil means that WINDOW's current
display margins, fringe widths, and scroll bar settings are preserved;
the default is to reset these from the local settings for BUFFER-OR-NAME
or the frame defaults. Return nil.
This function throws an error when WINDOW is strongly dedicated to its
buffer (that is `window-dedicated-p' returns t for WINDOW) and does not
already display BUFFER-OR-NAME.
This function runs `window-scroll-functions' before running
`window-configuration-change-hook'. */)
(register Lisp_Object window, Lisp_Object buffer_or_name, Lisp_Object keep_margins)
{
register Lisp_Object tem, buffer;
register struct window *w = decode_live_window (window);
XSETWINDOW (window, w);
buffer = Fget_buffer (buffer_or_name);
CHECK_BUFFER (buffer);
if (!BUFFER_LIVE_P (XBUFFER (buffer)))
error ("Attempt to display deleted buffer");
tem = w->contents;
if (NILP (tem))
error ("Window is deleted");
else
{
if (!EQ (tem, buffer))
{
if (EQ (w->dedicated, Qt))
/* WINDOW is strongly dedicated to its buffer, signal an
error. */
error ("Window is dedicated to `%s'", SDATA (BVAR (XBUFFER (tem), name)));
else
/* WINDOW is weakly dedicated to its buffer, reset
dedication. */
wset_dedicated (w, Qnil);
call1 (Qrecord_window_buffer, window);
}
unshow_buffer (w);
}
set_window_buffer (window, buffer, true, !NILP (keep_margins));
return Qnil;
}
\f
static Lisp_Object
display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, Lisp_Object override_frame)
{
return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame);
}
DEFUN ("force-window-update", Fforce_window_update, Sforce_window_update,
0, 1, 0,
doc: /* Force all windows to be updated on next redisplay.
If optional arg OBJECT is a window, force redisplay of that window only.
If OBJECT is a buffer or buffer name, force redisplay of all windows
displaying that buffer. */)
(Lisp_Object object)
{
if (NILP (object))
{
windows_or_buffers_changed = 29;
update_mode_lines = 28;
return Qt;
}
if (WINDOW_LIVE_P (object))
{
struct window *w = XWINDOW (object);
mark_window_display_accurate (object, false);
w->update_mode_line = true;
if (BUFFERP (w->contents))
XBUFFER (w->contents)->prevent_redisplay_optimizations_p = true;
update_mode_lines = 29;
return Qt;
}
if (STRINGP (object))
object = Fget_buffer (object);
if (BUFFERP (object) && BUFFER_LIVE_P (XBUFFER (object))
&& buffer_window_count (XBUFFER (object)))
{
/* If buffer is live and shown in at least one window, find
all windows showing this buffer and force update of them. */
object = window_loop (REDISPLAY_BUFFER_WINDOWS, object, false, Qvisible);
return NILP (object) ? Qnil : Qt;
}
/* If nothing suitable was found, just return.
We could signal an error, but this feature will typically be used
asynchronously in timers or process sentinels, so we don't. */
return Qnil;
}
/* Obsolete since 24.3. */
void
temp_output_buffer_show (register Lisp_Object buf)
{
register struct buffer *old = current_buffer;
register Lisp_Object window;
register struct window *w;
bset_directory (XBUFFER (buf), BVAR (current_buffer, directory));
Fset_buffer (buf);
BUF_SAVE_MODIFF (XBUFFER (buf)) = MODIFF;
BEGV = BEG;
ZV = Z;
SET_PT (BEG);
set_buffer_internal (old);
if (!NILP (Vtemp_buffer_show_function))
call1 (Vtemp_buffer_show_function, buf);
else if (WINDOW_LIVE_P (window = display_buffer (buf, Qnil, Qnil)))
{
if (!EQ (XWINDOW (window)->frame, selected_frame))
Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window)));
Vminibuf_scroll_window = window;
w = XWINDOW (window);
w->hscroll = w->min_hscroll = w->hscroll_whole = 0;
w->suspend_auto_hscroll = false;
set_marker_restricted_both (w->start, buf, BEG, BEG);
set_marker_restricted_both (w->pointm, buf, BEG, BEG);
set_marker_restricted_both (w->old_pointm, buf, BEG, BEG);
/* Run temp-buffer-show-hook, with the chosen window selected
and its buffer current. */
{
specpdl_ref count = SPECPDL_INDEX ();
Lisp_Object prev_window, prev_buffer;
prev_window = selected_window;
XSETBUFFER (prev_buffer, old);
/* Select the window that was chosen, for running the hook.
Note: Both Fselect_window and select_window_norecord may
set-buffer to the buffer displayed in the window,
so we need to save the current buffer. --stef */
record_unwind_protect (restore_buffer, prev_buffer);
record_unwind_protect (select_window_norecord, prev_window);
Fselect_window (window, Qt);
Fset_buffer (w->contents);
run_hook (Qtemp_buffer_show_hook);
unbind_to (count, Qnil);
}
}
}
/* Allocate basically initialized window. */
static struct window *
allocate_window (void)
{
return ALLOCATE_ZEROED_PSEUDOVECTOR (struct window, mode_line_help_echo,
PVEC_WINDOW);
}
/* Make new window, have it replace WINDOW in window-tree, and make
WINDOW its only vertical child (HORFLAG means make WINDOW its only
horizontal child). */
static void
make_parent_window (Lisp_Object window, bool horflag)
{
Lisp_Object parent;
register struct window *o, *p;
o = XWINDOW (window);
p = allocate_window ();
memcpy ((char *) p + sizeof (union vectorlike_header),
(char *) o + sizeof (union vectorlike_header),
word_size * VECSIZE (struct window));
/* P's buffer slot may change from nil to a buffer... */
adjust_window_count (p, 1);
XSETWINDOW (parent, p);
p->sequence_number = ++sequence_number;
replace_window (window, parent, true);
wset_next (o, Qnil);
wset_prev (o, Qnil);
wset_parent (o, parent);
/* ...but now P becomes an internal window. */
wset_start (p, Qnil);
wset_pointm (p, Qnil);
wset_old_pointm (p, Qnil);
wset_buffer (p, Qnil);
wset_combination (p, horflag, window);
wset_combination_limit (p, Qnil);
/* Reset any previous and next buffers of p which have been installed
by the memcpy above. */
wset_prev_buffers (p, Qnil);
wset_next_buffers (p, Qnil);
wset_window_parameters (p, Qnil);
}
/* Make new window from scratch. */
Lisp_Object
make_window (void)
{
Lisp_Object window;
register struct window *w;
w = allocate_window ();
/* Initialize Lisp data. Note that allocate_window initializes all
Lisp data to nil, so do it only for slots which should not be nil. */
wset_normal_lines (w, make_float (1.0));
wset_normal_cols (w, make_float (1.0));
wset_new_total (w, make_fixnum (0));
wset_new_normal (w, make_fixnum (0));
wset_new_pixel (w, make_fixnum (0));
wset_start (w, Fmake_marker ());
wset_pointm (w, Fmake_marker ());
wset_old_pointm (w, Fmake_marker ());
wset_vertical_scroll_bar_type (w, Qt);
wset_horizontal_scroll_bar_type (w, Qt);
wset_cursor_type (w, Qt);
/* Initialize non-Lisp data. Note that allocate_window zeroes out all
non-Lisp data, so do it only for slots which should not be zero. */
w->nrows_scale_factor = w->ncols_scale_factor = 1;
w->left_fringe_width = w->right_fringe_width = -1;
w->mode_line_height = w->tab_line_height = w->header_line_height = -1;
#ifdef HAVE_WINDOW_SYSTEM
w->phys_cursor_type = NO_CURSOR;
w->phys_cursor_width = -1;
#endif
w->sequence_number = ++sequence_number;
w->scroll_bar_width = -1;
w->scroll_bar_height = -1;
w->column_number_displayed = -1;
/* Reset window_list. */
Vwindow_list = Qnil;
/* Return window. */
XSETWINDOW (window, w);
return window;
}
\f
DEFUN ("set-window-new-pixel", Fset_window_new_pixel, Sset_window_new_pixel, 2, 3, 0,
doc: /* Set new pixel size of WINDOW to SIZE.
WINDOW must be a valid window and defaults to the selected one.
Return SIZE.
Optional argument ADD non-nil means add SIZE to the new pixel size of
WINDOW and return the sum.
The new pixel size of WINDOW, if valid, will be shortly installed as
WINDOW's pixel height (see `window-pixel-height') or pixel width (see
`window-pixel-width').
Note: This function does not operate on any child windows of WINDOW. */)
(Lisp_Object window, Lisp_Object size, Lisp_Object add)
{
struct window *w = decode_valid_window (window);
EMACS_INT size_min = NILP (add) ? 0 : - XFIXNUM (w->new_pixel);
EMACS_INT size_max = size_min + min (INT_MAX, MOST_POSITIVE_FIXNUM);
int checked_size = check_integer_range (size, size_min, size_max);
if (NILP (add))
wset_new_pixel (w, size);
else
wset_new_pixel (w, make_fixnum (XFIXNUM (w->new_pixel) + checked_size));
return w->new_pixel;
}
DEFUN ("set-window-new-total", Fset_window_new_total, Sset_window_new_total, 2, 3, 0,
doc: /* Set new total size of WINDOW to SIZE.
WINDOW must be a valid window and defaults to the selected one.
Return SIZE.
Optional argument ADD non-nil means add SIZE to the new total size of
WINDOW and return the sum.
The new total size of WINDOW, if valid, will be shortly installed as
WINDOW's total height (see `window-total-height') or total width (see
`window-total-width').
Note: This function does not operate on any child windows of WINDOW. */)
(Lisp_Object window, Lisp_Object size, Lisp_Object add)
{
struct window *w = decode_valid_window (window);
CHECK_FIXNUM (size);
if (NILP (add))
wset_new_total (w, size);
else
wset_new_total (w, make_fixnum (XFIXNUM (w->new_total) + XFIXNUM (size)));
return w->new_total;
}
DEFUN ("set-window-new-normal", Fset_window_new_normal, Sset_window_new_normal, 1, 2, 0,
doc: /* Set new normal size of WINDOW to SIZE.
WINDOW must be a valid window and defaults to the selected one.
Return SIZE.
The new normal size of WINDOW, if valid, will be shortly installed as
WINDOW's normal size (see `window-normal-size').
Note: This function does not operate on any child windows of WINDOW. */)
(Lisp_Object window, Lisp_Object size)
{
wset_new_normal (decode_valid_window (window), size);
return size;
}
/* Return true if setting w->pixel_height (w->pixel_width if HORFLAG)
to w->new_pixel would result in correct heights (widths)
for window W and recursively all child windows of W.
Note: This function does not check any of `window-fixed-size-p',
`window-min-height' or `window-min-width'. It does check that window
sizes do not drop below one line (two columns). */
static bool
window_resize_check (struct window *w, bool horflag)
{
struct frame *f = XFRAME (w->frame);
struct window *c;
if (WINDOW_VERTICAL_COMBINATION_P (w))
/* W is a vertical combination. */
{
c = XWINDOW (w->contents);
if (horflag)
/* All child windows of W must have the same width as W. */
{
while (c)
{
if (XFIXNUM (c->new_pixel) != XFIXNUM (w->new_pixel)
|| !window_resize_check (c, horflag))
return false;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
return true;
}
else
/* The sum of the heights of the child windows of W must equal
W's height. */
{
int remaining_pixels = XFIXNUM (w->new_pixel);
while (c)
{
if (!window_resize_check (c, horflag))
return false;
remaining_pixels -= XFIXNUM (c->new_pixel);
if (remaining_pixels < 0)
return false;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
return remaining_pixels == 0;
}
}
else if (WINDOW_HORIZONTAL_COMBINATION_P (w))
/* W is a horizontal combination. */
{
c = XWINDOW (w->contents);
if (horflag)
/* The sum of the widths of the child windows of W must equal W's
width. */
{
int remaining_pixels = XFIXNUM (w->new_pixel);
while (c)
{
if (!window_resize_check (c, horflag))
return false;
remaining_pixels -= XFIXNUM (c->new_pixel);
if (remaining_pixels < 0)
return false;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
return remaining_pixels == 0;
}
else
/* All child windows of W must have the same height as W. */
{
while (c)
{
if (XFIXNUM (c->new_pixel) != XFIXNUM (w->new_pixel)
|| !window_resize_check (c, horflag))
return false;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
return true;
}
}
else
/* A leaf window. Make sure it's not too small. The following
hardcodes the values of `window-safe-min-width' (2) and
`window-safe-min-height' (1) which are defined in window.el. */
return (XFIXNUM (w->new_pixel) >= (horflag
? 2 * FRAME_COLUMN_WIDTH (f)
: FRAME_LINE_HEIGHT (f)));
}
/* Set w->pixel_height (w->pixel_width if HORFLAG) to
w->new_pixel for window W and recursively all child windows of W.
Also calculate and assign the new vertical (horizontal) pixel start
positions of each of these windows.
This function does not perform any error checks. Make sure you have
run window_resize_check on W before applying this function. */
static void
window_resize_apply (struct window *w, bool horflag)
{
struct window *c;
int edge;
int unit = (horflag
? FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w))
: FRAME_LINE_HEIGHT (WINDOW_XFRAME (w)));
/* Note: Assigning new_normal requires that the new total size of the
parent window has been set *before*. */
if (horflag)
{
w->pixel_width = XFIXNAT (w->new_pixel);
w->total_cols = w->pixel_width / unit;
if (NUMBERP (w->new_normal))
wset_normal_cols (w, w->new_normal);
edge = w->pixel_left;
}
else
{
w->pixel_height = XFIXNAT (w->new_pixel);
w->total_lines = w->pixel_height / unit;
if (NUMBERP (w->new_normal))
wset_normal_lines (w, w->new_normal);
edge = w->pixel_top;
}
if (WINDOW_VERTICAL_COMBINATION_P (w))
/* W is a vertical combination. */
{
c = XWINDOW (w->contents);
while (c)
{
if (horflag)
{
c->pixel_left = edge;
c->left_col = edge / unit;
}
else
{
c->pixel_top = edge;
c->top_line = edge / unit;
}
window_resize_apply (c, horflag);
if (!horflag)
edge = edge + c->pixel_height;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
}
else if (WINDOW_HORIZONTAL_COMBINATION_P (w))
/* W is a horizontal combination. */
{
c = XWINDOW (w->contents);
while (c)
{
if (horflag)
{
c->pixel_left = edge;
c->left_col = edge / unit;
}
else
{
c->pixel_top = edge;
c->top_line = edge / unit;
}
window_resize_apply (c, horflag);
if (horflag)
edge = edge + c->pixel_width;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
}
else
/* Bug#15957. */
w->window_end_valid = false;
if (!WINDOW_PSEUDO_P (w))
FRAME_WINDOW_CHANGE (WINDOW_XFRAME (w)) = true;
}
/* Set w->total_lines (w->total_cols if HORFLAG) to
w->new_total for window W and recursively all child windows of W.
Also calculate and assign the new vertical (horizontal) start
positions of each of these windows. */
static void
window_resize_apply_total (struct window *w, bool horflag)
{
struct window *c;
int edge;
/* Note: Assigning new_normal requires that the new total size of the
parent window has been set *before*. */
if (horflag)
{
w->total_cols = XFIXNAT (w->new_total);
edge = w->left_col;
}
else
{
w->total_lines = XFIXNAT (w->new_total);
edge = w->top_line;
}
if (WINDOW_VERTICAL_COMBINATION_P (w))
/* W is a vertical combination. */
{
c = XWINDOW (w->contents);
while (c)
{
if (horflag)
c->left_col = edge;
else
c->top_line = edge;
window_resize_apply_total (c, horflag);
if (!horflag)
edge = edge + c->total_lines;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
}
else if (WINDOW_HORIZONTAL_COMBINATION_P (w))
/* W is a horizontal combination. */
{
c = XWINDOW (w->contents);
while (c)
{
if (horflag)
c->left_col = edge;
else
c->top_line = edge;
window_resize_apply_total (c, horflag);
if (horflag)
edge = edge + c->total_cols;
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
}
}
DEFUN ("window-resize-apply", Fwindow_resize_apply, Swindow_resize_apply, 0, 2, 0,
doc: /* Apply requested size values for window-tree of FRAME.
If FRAME is omitted or nil, it defaults to the selected frame.
Optional argument HORIZONTAL omitted or nil means apply requested
height values. HORIZONTAL non-nil means apply requested width values.
The requested size values are those set by `set-window-new-pixel' and
`set-window-new-normal'. This function checks whether the requested
values sum up to a valid window layout, recursively assigns the new
sizes of all child windows and calculates and assigns the new start
positions of these windows.
Return t if the requested values have been applied correctly, nil
otherwise.
Note: This function does not check any of `window-fixed-size-p',
`window-min-height' or `window-min-width'. All these checks have to
be applied on the Elisp level. */)
(Lisp_Object frame, Lisp_Object horizontal)
{
struct frame *f = decode_live_frame (frame);
struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f));
bool horflag = !NILP (horizontal);
if (!window_resize_check (r, horflag)
|| (XFIXNUM (r->new_pixel)
!= (horflag ? r->pixel_width : r->pixel_height)))
return Qnil;
block_input ();
window_resize_apply (r, horflag);
fset_redisplay (f);
adjust_frame_glyphs (f);
unblock_input ();
return Qt;
}
DEFUN ("window-resize-apply-total", Fwindow_resize_apply_total, Swindow_resize_apply_total, 0, 2, 0,
doc: /* Apply requested total size values for window-tree of FRAME.
If FRAME is omitted or nil, it defaults to the selected frame.
This function does not assign pixel or normal size values. You should
have run `window-resize-apply' before running this.
Optional argument HORIZONTAL omitted or nil means apply requested
height values. HORIZONTAL non-nil means apply requested width
values. */)
(Lisp_Object frame, Lisp_Object horizontal)
{
struct frame *f = decode_live_frame (frame);
struct window *r = XWINDOW (FRAME_ROOT_WINDOW (f));
block_input ();
/* Necessary when deleting the top-/or leftmost window. */
r->left_col = 0;
r->top_line = FRAME_TOP_MARGIN (f);
window_resize_apply_total (r, !NILP (horizontal));
/* Handle the mini window. */
if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f))
{
struct window *m = XWINDOW (f->minibuffer_window);
if (NILP (horizontal))
{
m->top_line = r->top_line + r->total_lines;
m->total_lines = XFIXNAT (m->new_total);
}
else
m->total_cols = XFIXNAT (m->new_total);
}
unblock_input ();
return Qt;
}
/* Resize frame F's windows when F's inner height (inner width if
HORFLAG is true) has been set to SIZE pixels. */
void
resize_frame_windows (struct frame *f, int size, bool horflag)
{
Lisp_Object root = f->root_window;
struct window *r = XWINDOW (root);
int old_pixel_size = horflag ? r->pixel_width : r->pixel_height;
int new_size, new_pixel_size;
int unit = horflag ? FRAME_COLUMN_WIDTH (f) : FRAME_LINE_HEIGHT (f);
Lisp_Object mini = f->minibuffer_window;
struct window *m = WINDOWP (mini) ? XWINDOW (mini) : NULL;
int mini_height = ((FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f))
? (unit + m->pixel_height
- window_body_height (m, WINDOW_BODY_IN_PIXELS))
: 0);
new_pixel_size = max (horflag ? size : size - mini_height, unit);
new_size = new_pixel_size / unit;
if (new_pixel_size == old_pixel_size
&& (horflag || r->pixel_top == FRAME_TOP_MARGIN_HEIGHT (f)))
;
else if (WINDOW_LEAF_P (r))
{
/* For a leaf root window just set the size. */
if (horflag)
{
r->total_cols = new_size;
r->pixel_width = new_pixel_size;
}
else
{
r->top_line = FRAME_TOP_MARGIN (f);
r->pixel_top = FRAME_TOP_MARGIN_HEIGHT (f);
r->total_lines = new_size;
r->pixel_height = new_pixel_size;
}
FRAME_WINDOW_CHANGE (f)
= !WINDOW_PSEUDO_P (r) && new_pixel_size != old_pixel_size;
}
else
{
Lisp_Object delta;
if (!horflag)
{
r->top_line = FRAME_TOP_MARGIN (f);
r->pixel_top = FRAME_TOP_MARGIN_HEIGHT (f);
}
XSETINT (delta, new_pixel_size - old_pixel_size);
/* Try a "normal" resize first. */
resize_root_window (root, delta, horflag ? Qt : Qnil, Qnil, Qt);
if (window_resize_check (r, horflag)
&& new_pixel_size == XFIXNUM (r->new_pixel))
{
window_resize_apply (r, horflag);
window_pixel_to_total (r->frame, horflag ? Qt : Qnil);
}
else
{
/* Try with "reasonable" minimum sizes next. */
resize_root_window (root, delta, horflag ? Qt : Qnil, Qt, Qt);
if (window_resize_check (r, horflag)
&& new_pixel_size == XFIXNUM (r->new_pixel))
{
window_resize_apply (r, horflag);
window_pixel_to_total (r->frame, horflag ? Qt : Qnil);
}
}
}
if (FRAME_HAS_MINIBUF_P (f) && !FRAME_MINIBUF_ONLY_P (f))
{
m = XWINDOW (mini);
if (horflag)
{
m->total_cols = new_size;
m->pixel_width = new_pixel_size;
}
else
{
m->total_lines = mini_height / unit;
m->pixel_height = mini_height;
m->top_line = r->top_line + r->total_lines;
m->pixel_top = r->pixel_top + r->pixel_height;
}
}
fset_redisplay (f);
}
DEFUN ("split-window-internal", Fsplit_window_internal, Ssplit_window_internal, 4, 5, 0,
doc: /* Split window OLD.
Second argument PIXEL-SIZE specifies the number of pixels of the
new window. It must be a positive integer.
Third argument SIDE nil (or `below') specifies that the new window shall
be located below WINDOW. SIDE `above' means the new window shall be
located above WINDOW. In both cases PIXEL-SIZE specifies the pixel
height of the new window including space reserved for the mode and/or
header/tab line.
SIDE t (or `right') specifies that the new window shall be located on
the right side of WINDOW. SIDE `left' means the new window shall be
located on the left of WINDOW. In both cases PIXEL-SIZE specifies the
width of the new window including space reserved for fringes and the
scroll bar or a divider column.
Fourth argument NORMAL-SIZE specifies the normal size of the new window
according to the SIDE argument. Optional fifth argument REFER is as for
'split-window'.
The new pixel and normal sizes of all involved windows must have been
set correctly. See the code of `split-window' for how this is done. */)
(Lisp_Object old, Lisp_Object pixel_size, Lisp_Object side, Lisp_Object normal_size,
Lisp_Object refer)
{
/* OLD (*o) is the window we have to split. (*p) is either OLD's
parent window or an internal window we have to install as OLD's new
parent. NEW (*n) is the new window created or adopted with
properties from REFER (*r), if specified. */
struct window *o = decode_valid_window (old);
Lisp_Object frame = WINDOW_FRAME (o);
struct frame *f = XFRAME (frame);
struct window *p, *n, *r, *c;
bool horflag
/* HORFLAG is true when we split side-by-side, false otherwise. */
= EQ (side, Qt) || EQ (side, Qleft) || EQ (side, Qright);
Lisp_Object new;
bool dead = false;
CHECK_FIXNUM (pixel_size);
EMACS_INT total_size
= XFIXNUM (pixel_size) / (horflag
? FRAME_COLUMN_WIDTH (f)
: FRAME_LINE_HEIGHT (f));
/* Set combination_limit if we have to make a new parent window.
We do that if either `window-combination-limit' is t, or OLD has no
parent, or OLD is ortho-combined. */
bool combination_limit
= (EQ (Vwindow_combination_limit, Qt)
|| NILP (o->parent)
|| (horflag
? WINDOW_VERTICAL_COMBINATION_P (XWINDOW (o->parent))
: WINDOW_HORIZONTAL_COMBINATION_P (XWINDOW (o->parent))));
/* Set up reference window. */
if (NILP (refer))
{
if (WINDOW_LIVE_P (old))
/* OLD is live, use it as reference window. */
refer = old;
else
/* Use the frame's selected window as reference window. */
refer = FRAME_SELECTED_WINDOW (f);
r = XWINDOW (refer);
}
else
{
r = decode_any_window (refer);
if (NILP (r->contents))
/* Presumably a dead, former live window. Check whether its
content can be used. */
{
if (!BUFFERP (r->old_buffer))
error ("Dead reference window was not a live window");
else if (!BUFFER_LIVE_P (XBUFFER (r->old_buffer)))
error ("Dead reference window's old buffer is dead");
else if (!EQ (r->frame, frame))
error ("Dead referenec window was on other frame");
dead = true;
}
else if (!WINDOW_LIVE_P (refer))
error ("Reference window must not be internal");
}
/* The following bugs are caught by `split-window'. */
if (MINI_WINDOW_P (o))
error ("Attempt to split minibuffer window");
else if (total_size < (horflag ? 2 : 1))
error ("Size of new window too small (after split)");
else if (!combination_limit && !NILP (Vwindow_combination_resize))
/* `window-combination-resize' non-nil means try to resize OLD's siblings
proportionally. */
{
p = XWINDOW (o->parent);
/* Temporarily pretend we split the parent window. */
wset_new_pixel
(p, make_fixnum ((horflag ? p->pixel_width : p->pixel_height)
- XFIXNUM (pixel_size)));
if (!window_resize_check (p, horflag))
error ("Window sizes don't fit");
else
/* Undo the temporary pretension. */
wset_new_pixel (p, make_fixnum (horflag ? p->pixel_width : p->pixel_height));
}
else
{
if (!window_resize_check (o, horflag))
error ("Resizing old window failed");
else if (XFIXNUM (pixel_size) + XFIXNUM (o->new_pixel)
!= (horflag ? o->pixel_width : o->pixel_height))
error ("Sum of sizes of old and new window don't fit");
}
/* This is our point of no return. */
if (combination_limit)
{
/* Save the old value of o->normal_cols/lines. It gets corrupted
by make_parent_window and we need it below for assigning it to
p->new_normal. */
Lisp_Object new_normal
= horflag ? o->normal_cols : o->normal_lines;
make_parent_window (old, horflag);
p = XWINDOW (o->parent);
if (EQ (Vwindow_combination_limit, Qt))
/* Store t in the new parent's combination_limit slot to avoid
that its children get merged into another window. */
wset_combination_limit (p, Qt);
/* These get applied below. */
wset_new_pixel
(p, make_fixnum (horflag ? o->pixel_width : o->pixel_height));
wset_new_total
(p, make_fixnum (horflag ? o->total_cols : o->total_lines));
wset_new_normal (p, new_normal);
}
else
p = XWINDOW (o->parent);
fset_redisplay (f);
if (dead)
new = refer;
else
new = make_window ();
n = XWINDOW (new);
wset_frame (n, frame);
wset_parent (n, o->parent);
if (EQ (side, Qabove) || EQ (side, Qleft))
{
wset_prev (n, o->prev);
if (NILP (n->prev))
wset_combination (p, horflag, new);
else
wset_next (XWINDOW (n->prev), new);
wset_next (n, old);
wset_prev (o, new);
}
else
{
wset_next (n, o->next);
if (!NILP (n->next))
wset_prev (XWINDOW (n->next), new);
wset_prev (n, old);
wset_next (o, new);
}
if (!dead)
{
n->window_end_valid = false;
n->last_cursor_vpos = 0;
/* Get special geometry settings from reference window. */
n->left_margin_cols = r->left_margin_cols;
n->right_margin_cols = r->right_margin_cols;
n->left_fringe_width = r->left_fringe_width;
n->right_fringe_width = r->right_fringe_width;
n->fringes_outside_margins = r->fringes_outside_margins;
n->scroll_bar_width = r->scroll_bar_width;
n->scroll_bar_height = r->scroll_bar_height;
wset_vertical_scroll_bar_type (n, r->vertical_scroll_bar_type);
wset_horizontal_scroll_bar_type (n, r->horizontal_scroll_bar_type);
}
/* Directly assign orthogonal coordinates and sizes. */
if (horflag)
{
n->pixel_top = o->pixel_top;
n->top_line = o->top_line;
n->pixel_height = o->pixel_height;
n->total_lines = o->total_lines;
}
else
{
n->pixel_left = o->pixel_left;
n->left_col = o->left_col;
n->pixel_width = o->pixel_width;
n->total_cols = o->total_cols;
}
/* Iso-coordinates and sizes are assigned by window_resize_apply,
get them ready here. */
wset_new_pixel (n, pixel_size);
EMACS_INT sum = 0;
c = XWINDOW (p->contents);
while (c)
{
if (c != n)
sum = sum + XFIXNUM (c->new_total);
c = NILP (c->next) ? 0 : XWINDOW (c->next);
}
wset_new_total (n, make_fixnum ((horflag
? p->total_cols
: p->total_lines)
- sum));
wset_new_normal (n, normal_size);
block_input ();
if (dead)
{
/* Get dead window back its old buffer and markers. */
wset_buffer (n, n->old_buffer);
Fset_marker (n->start, make_fixnum (n->del_start), n->contents);
Fset_marker (n->pointm, make_fixnum (n->del_pointm), n->contents);
Vwindow_list = Qnil;
}
else
{
/* Note: n->contents is Qnil throughout this call, so n will be
neither considered a leaf nor an internal window. */
Lisp_Object buffer = r->contents;
struct buffer *b = XBUFFER (buffer);
/* Provisorially set new's buffer to that of the reference window,
resize the parent, reset new's buffer to nil and do the real
set_window_buffer. */
wset_buffer (n, buffer);
set_marker_both (n->pointm, buffer, BUF_PT (b), BUF_PT_BYTE (b));
set_marker_restricted
(n->start, make_fixnum (b->last_window_start), buffer);
}
window_resize_apply (p, horflag);
if (!dead)
{
/* Set buffer of NEW to buffer of reference window. We have to do it
here so the sizes of NEW are in place. But be sure to do it before
adjusting the frame glyphs - otherwise Emacs may inexplicably loop
forever. */
wset_buffer (n, Qnil);
set_window_buffer (new, r->contents, true, true);
}
adjust_frame_glyphs (f);
FRAME_WINDOW_CHANGE (f) = true;
unblock_input ();
return new;
}
DEFUN ("delete-window-internal", Fdelete_window_internal, Sdelete_window_internal, 1, 1, 0,
doc: /* Remove WINDOW from its frame.
WINDOW defaults to the selected window. Return nil.
Signal an error when WINDOW is the only window on its frame. */)
(Lisp_Object window)
{
Lisp_Object parent, sibling, frame, root;
struct window *w, *p, *s, *r;
struct frame *f;
bool horflag, before_sibling = false;
w = decode_any_window (window);
XSETWINDOW (window, w);
if (NILP (w->contents))
/* It's a no-op to delete an already deleted window. */
return Qnil;
parent = w->parent;
if (NILP (parent))
/* Never delete a minibuffer or frame root window. */
error ("Attempt to delete minibuffer or sole ordinary window");
else if (NILP (w->prev) && NILP (w->next))
/* Rather bow out here, this case should be handled on the Elisp
level. */
error ("Attempt to delete sole window of parent");
p = XWINDOW (parent);
horflag = WINDOW_HORIZONTAL_COMBINATION_P (p);
frame = WINDOW_FRAME (w);
f = XFRAME (frame);
root = FRAME_ROOT_WINDOW (f);
r = XWINDOW (root);
/* Unlink WINDOW from window tree. */
if (NILP (w->prev))
/* Get SIBLING below (on the right of) WINDOW. */
{
/* before_sibling means WINDOW is the first child of its
parent and thus before the sibling. */
before_sibling = true;
sibling = w->next;
s = XWINDOW (sibling);
wset_prev (s, Qnil);
wset_combination (p, horflag, sibling);
}
else
/* Get SIBLING above (on the left of) WINDOW. */
{
sibling = w->prev;
s = XWINDOW (sibling);
wset_next (s, w->next);
if (!NILP (s->next))
wset_prev (XWINDOW (s->next), sibling);
}
if (window_resize_check (r, horflag)
&& (XFIXNUM (r->new_pixel)
== (horflag ? r->pixel_width : r->pixel_height)))
/* We can delete WINDOW now. */
{
/* Block input. */
block_input ();
xwidget_view_delete_all_in_window (w);
window_resize_apply (p, horflag);
/* If this window is referred to by the dpyinfo's mouse
highlight, invalidate that slot to be safe (Bug#9904). */
if (!FRAME_INITIAL_P (f))
{
Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
if (EQ (hlinfo->mouse_face_window, window))
hlinfo->mouse_face_window = Qnil;
}
fset_redisplay (f);
Vwindow_list = Qnil;
wset_next (w, Qnil); /* Don't delete w->next too. */
free_window_matrices (w);
if (WINDOWP (w->contents))
{
delete_all_child_windows (w->contents);
wset_combination (w, false, Qnil);
}
else
{
if (MARKERP (w->pointm))
w->del_pointm = marker_position (w->pointm);
if (MARKERP (w->start))
w->del_start = marker_position (w->start);
unshow_buffer (w);
unchain_marker (XMARKER (w->pointm));
unchain_marker (XMARKER (w->old_pointm));
unchain_marker (XMARKER (w->start));
wset_old_buffer (w, w->contents);
wset_buffer (w, Qnil);
/* Add WINDOW to table of dead windows so when killing a buffer
WINDOW mentions, all references to that buffer can be removed
and the buffer be collected. */
Fputhash (make_fixnum (w->sequence_number),
window, window_dead_windows_table);
}
if (NILP (s->prev) && NILP (s->next))
/* A matrjoshka where SIBLING has become the only child of
PARENT. */
{
/* Put SIBLING into PARENT's place. */
replace_window (parent, sibling, false);
/* Have SIBLING inherit the following three slot values from
PARENT (the combination_limit slot is not inherited). */
wset_normal_cols (s, p->normal_cols);
wset_normal_lines (s, p->normal_lines);
/* Mark PARENT as deleted. */
wset_combination (p, false, Qnil);
/* Try to merge SIBLING into its new parent. */
recombine_windows (sibling);
}
adjust_frame_glyphs (f);
if (!WINDOW_LIVE_P (FRAME_SELECTED_WINDOW (f)))
/* We apparently deleted the frame's selected window; use the
frame's first window as substitute but don't record it yet.
`delete-window' may have something better up its sleeves. */
{
/* Use the frame's first window as fallback ... */
Lisp_Object new_selected_window = Fframe_first_window (frame);
if (EQ (FRAME_SELECTED_WINDOW (f), selected_window))
Fselect_window (new_selected_window, Qt);
else
/* Do not clear f->select_mini_window_flag here. If the
last selected window on F was an active minibuffer, we
want to return to it on a later Fselect_frame. */
fset_selected_window (f, new_selected_window);
}
unblock_input ();
FRAME_WINDOW_CHANGE (f) = true;
}
else
/* We failed: Relink WINDOW into window tree. */
{
if (before_sibling)
{
wset_prev (s, window);
wset_combination (p, horflag, window);
}
else
{
wset_next (s, window);
if (!NILP (w->next))
wset_prev (XWINDOW (w->next), window);
}
error ("Deletion failed");
}
return Qnil;
}
\f
/***********************************************************************
Resizing Mini-Windows
***********************************************************************/
/**
* resize_mini_window_apply:
*
* Assign new window sizes after resizing a mini window W by DELTA
* pixels. No error checking performed.
*/
static void
resize_mini_window_apply (struct window *w, int delta)
{
struct frame *f = XFRAME (w->frame);
Lisp_Object root = FRAME_ROOT_WINDOW (f);
struct window *r = XWINDOW (root);
block_input ();
w->pixel_height = w->pixel_height + delta;
w->total_lines = w->pixel_height / FRAME_LINE_HEIGHT (f);
window_resize_apply (r, false);
w->pixel_top = r->pixel_top + r->pixel_height;
w->top_line = r->top_line + r->total_lines;
/* Enforce full redisplay of the frame. If f->redisplay is already
set, which it generally is in the wake of a ConfigureNotify
(frame resize) event, merely setting f->redisplay is insufficient
for redisplay_internal to continue redisplaying the frame, as
redisplay_internal cannot distinguish between f->redisplay set
before it calls redisplay_window and that after, so garbage the
frame as well. */
if (f->redisplay)
SET_FRAME_GARBAGED (f);
/* FIXME: Shouldn't some of the caller do it? */
fset_redisplay (f);
adjust_frame_glyphs (f);
unblock_input ();
}
/**
* grow_mini_window:
*
* Grow mini-window W by DELTA pixels. If DELTA is negative, this may
* shrink the minibuffer window to the minimum height to display one
* line of text.
*/
void
grow_mini_window (struct window *w, int delta)
{
struct frame *f = XFRAME (w->frame);
int old_height = window_body_height (w, WINDOW_BODY_IN_PIXELS);
int min_height = FRAME_LINE_HEIGHT (f);
eassert (MINI_WINDOW_P (w));
/* Never shrink mini-window to less than its minimum height. */
if (old_height + delta < min_height)
delta = old_height > min_height ? min_height - old_height : 0;
if (delta != 0)
{
Lisp_Object root = FRAME_ROOT_WINDOW (f);
struct window *r = XWINDOW (root);
Lisp_Object grow;
grow = call3 (Qwindow__resize_root_window_vertically,
root, make_fixnum (- delta), Qt);
if (FIXNUMP (grow)
/* It might be impossible to resize the window, in which case
calling resize_mini_window_apply will set off an infinite
loop where the redisplay cycle so forced returns to
resize_mini_window, making endless attempts to expand the
minibuffer window to this impossible size. (bug#69140) */
&& XFIXNUM (grow) != 0
&& window_resize_check (r, false))
resize_mini_window_apply (w, -XFIXNUM (grow));
}
FRAME_WINDOWS_FROZEN (f)
= window_body_height (w, WINDOW_BODY_IN_PIXELS) > FRAME_LINE_HEIGHT (f);
}
/**
* shrink_mini_window:
*
* Shrink mini-window W to the minimum height needed to display one
* line of text.
*/
void
shrink_mini_window (struct window *w)
{
struct frame *f = XFRAME (w->frame);
int delta = (window_body_height (w, WINDOW_BODY_IN_PIXELS)
- FRAME_LINE_HEIGHT (f));
eassert (MINI_WINDOW_P (w));
if (delta > 0)
{
Lisp_Object root = FRAME_ROOT_WINDOW (f);
struct window *r = XWINDOW (root);
Lisp_Object grow;
grow = call3 (Qwindow__resize_root_window_vertically,
root, make_fixnum (delta), Qt);
if (FIXNUMP (grow) && window_resize_check (r, false))
resize_mini_window_apply (w, -XFIXNUM (grow));
}
else if (delta < 0)
/* delta can be less than zero after adding horizontal scroll
bar. */
grow_mini_window (w, -delta);
FRAME_WINDOWS_FROZEN (f)
= window_body_height (w, WINDOW_BODY_IN_PIXELS) > FRAME_LINE_HEIGHT (f);
}
DEFUN ("resize-mini-window-internal", Fresize_mini_window_internal,
Sresize_mini_window_internal, 1, 1, 0,
doc: /* Resize mini window WINDOW. */)
(Lisp_Object window)
{
struct window *w = XWINDOW (window);
struct window *r;
struct frame *f;
int old_height, delta;
CHECK_LIVE_WINDOW (window);
f = XFRAME (w->frame);
if (!EQ (FRAME_MINIBUF_WINDOW (XFRAME (w->frame)), window))
error ("Not a valid minibuffer window");
else if (FRAME_MINIBUF_ONLY_P (f))
error ("Cannot resize a minibuffer-only frame");
r = XWINDOW (FRAME_ROOT_WINDOW (f));
old_height = r->pixel_height + w->pixel_height;
delta = XFIXNUM (w->new_pixel) - w->pixel_height;
if (window_resize_check (r, false)
&& XFIXNUM (w->new_pixel) > 0
&& old_height == XFIXNUM (r->new_pixel) + XFIXNUM (w->new_pixel))
{
resize_mini_window_apply (w, delta);
return Qt;
}
else
error ("Cannot resize mini window");
}
\f
/* Mark window cursors off for all windows in the window tree rooted
at W by setting their phys_cursor_on_p flag to zero. Called from
xterm.c, e.g. when a frame is cleared and thereby all cursors on
the frame are cleared. */
void
mark_window_cursors_off (struct window *w)
{
while (w)
{
if (WINDOWP (w->contents))
mark_window_cursors_off (XWINDOW (w->contents));
else
w->phys_cursor_on_p = false;
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
}
/**
* window_wants_mode_line:
*
* Return 1 if window W wants a mode line and is high enough to
* accommodate it, 0 otherwise.
*
* W wants a mode line if it's a leaf window and neither a minibuffer
* nor a pseudo window. Moreover, its 'window-mode-line-format'
* parameter must not be 'none' and either that parameter or W's
* buffer's 'mode-line-format' value must be non-nil. Finally, W must
* be higher than its frame's canonical character height.
*/
bool
window_wants_mode_line (struct window *w)
{
Lisp_Object window_mode_line_format =
window_parameter (w, Qmode_line_format);
return (WINDOW_LEAF_P (w)
&& !MINI_WINDOW_P (w)
&& !WINDOW_PSEUDO_P (w)
&& !EQ (window_mode_line_format, Qnone)
&& (!NILP (window_mode_line_format)
|| !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), mode_line_format)))
&& WINDOW_PIXEL_HEIGHT (w) > WINDOW_FRAME_LINE_HEIGHT (w));
}
/**
* window_wants_header_line:
*
* Return 1 if window W wants a header line and is high enough to
* accommodate it, 0 otherwise.
*
* W wants a header line if it's a leaf window and neither a
* minibuffer nor a pseudo window. Moreover, its
* 'window-header-line-format' parameter must not be 'none' and either
* that parameter or W's buffer's 'header-line-format' value must be
* non-nil. Finally, W must be higher than its frame's canonical
* character height and be able to accommodate a mode line too if
* necessary (the mode line prevails).
*/
bool
window_wants_header_line (struct window *w)
{
Lisp_Object window_header_line_format =
window_parameter (w, Qheader_line_format);
return (WINDOW_LEAF_P (w)
&& !MINI_WINDOW_P (w)
&& !WINDOW_PSEUDO_P (w)
&& !EQ (window_header_line_format, Qnone)
&& (!NILP (window_header_line_format)
|| !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), header_line_format)))
&& (WINDOW_PIXEL_HEIGHT (w)
> (window_wants_mode_line (w)
? 2 * WINDOW_FRAME_LINE_HEIGHT (w)
: WINDOW_FRAME_LINE_HEIGHT (w))));
}
/**
* window_wants_tab_line:
*
* Return 1 if window W wants a tab line and is high enough to
* accommodate it, 0 otherwise.
*
* W wants a tab line if it's a leaf window and neither a minibuffer
* nor a pseudo window. Moreover, its 'window-tab-line-format'
* parameter must not be 'none' and either that parameter or W's
* buffer's 'tab-line-format' value must be non-nil. Finally, W must
* be higher than its frame's canonical character height and be able
* to accommodate a mode line and a header line too if necessary (the
* mode line and a header line prevail).
*/
bool
window_wants_tab_line (struct window *w)
{
Lisp_Object window_tab_line_format =
window_parameter (w, Qtab_line_format);
return (WINDOW_LEAF_P (w)
&& !MINI_WINDOW_P (w)
&& !WINDOW_PSEUDO_P (w)
&& !EQ (window_tab_line_format, Qnone)
&& (!NILP (window_tab_line_format)
|| !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), tab_line_format)))
&& (WINDOW_PIXEL_HEIGHT (w)
> (((window_wants_mode_line (w) ? 1 : 0)
+ (window_wants_header_line (w) ? 1 : 0)
+ 1) * WINDOW_FRAME_LINE_HEIGHT (w))));
}
/* Return number of lines of text in window W, not counting the mode
line and header line, if any. Do NOT use this for windows on GUI
frames; use window_body_height instead. This function is only for
windows on TTY frames, where it is much more efficient. */
int
window_internal_height (struct window *w)
{
int ht = w->total_lines;
if (window_wants_mode_line (w))
--ht;
if (window_wants_header_line (w))
--ht;
if (window_wants_tab_line (w))
--ht;
return ht;
}
\f
/************************************************************************
Window Scrolling
***********************************************************************/
/* Scroll contents of window WINDOW up. If WHOLE, scroll
N screen-fulls, which is defined as the height of the window minus
next_screen_context_lines. If WHOLE is zero, scroll up N lines
instead. Negative values of N mean scroll down. NOERROR
means don't signal an error if we try to move over BEGV or ZV,
respectively. */
static void
window_scroll (Lisp_Object window, EMACS_INT n, bool whole, bool noerror)
{
struct window *w = XWINDOW (window);
struct buffer *b = XBUFFER (w->contents);
bool long_lines_truncated =
b->long_line_optimizations_p && !NILP (BVAR (b, truncate_lines));
specpdl_ref count = SPECPDL_INDEX ();
n = clip_to_bounds (INT_MIN, n, INT_MAX);
wset_redisplay (w);
/* Does this window's buffer have very long and truncated lines? */
if (b->long_line_optimizations_p
&& !long_lines_truncated
&& !NILP (Vtruncate_partial_width_windows)
&& w->total_cols < FRAME_COLS (XFRAME (WINDOW_FRAME (w))))
{
if (FIXNUMP (Vtruncate_partial_width_windows))
long_lines_truncated =
w->total_cols < XFIXNAT (Vtruncate_partial_width_windows);
else
long_lines_truncated = true;
}
if (whole && (fast_but_imprecise_scrolling || long_lines_truncated))
specbind (Qfontification_functions, Qnil);
if (whole && long_lines_truncated)
window_scroll_for_long_lines (w, n, noerror);
else if (FRAME_WINDOW_P (XFRAME (XWINDOW (window)->frame)))
{
/* On GUI frames, use the pixel-based version which is much
slower than the line-based one, but can handle varying
line heights. */
record_unwind_protect_void (unwind_display_working_on_window);
display_working_on_window_p = true;
window_scroll_pixel_based (window, n, whole, noerror);
}
else
window_scroll_line_based (window, n, whole, noerror);
unbind_to (count, Qnil);
/* Bug#15957. */
XWINDOW (window)->window_end_valid = false;
}
/* Compute scroll margin for WINDOW.
We scroll when point is within this distance from the top or bottom
of the window. The result is measured in lines or in pixels
depending on the second parameter. */
int
window_scroll_margin (struct window *window, enum margin_unit unit)
{
if (scroll_margin > 0)
{
int frame_line_height = default_line_pixel_height (window);
int window_lines = window_box_height (window) / frame_line_height;
double ratio = 0.25;
if (FLOATP (Vmaximum_scroll_margin))
{
ratio = XFLOAT_DATA (Vmaximum_scroll_margin);
ratio = max (0.0, ratio);
ratio = min (ratio, 0.5);
}
int max_margin = min ((window_lines - 1)/2,
(int) (window_lines * ratio));
int margin = clip_to_bounds (0, scroll_margin, max_margin);
return (unit == MARGIN_IN_PIXELS)
? margin * frame_line_height
: margin;
}
else
return 0;
}
static int
sanitize_next_screen_context_lines (void)
{
return clip_to_bounds (0, next_screen_context_lines, 1000000);
}
/* Implementation of window_scroll for very long and truncated lines.
This is a simplified version, it only handles WHOLE window scrolls,
and doesn't honor scroll-preserve-screen-position nor scroll-margin. */
static void
window_scroll_for_long_lines (struct window *w, int n, bool noerror)
{
ptrdiff_t startpos = marker_position (w->start);
ptrdiff_t startbyte = marker_byte_position (w->start);
int nscls = sanitize_next_screen_context_lines ();
register int ht = window_internal_height (w);
n *= max (1, ht - nscls);
/* If point is not visible in window, bring it inside window. */
struct position pos;
int rtop, rbot, dummy_rowh, dummy_vpos, dummy_x, dummy_y;
if (!(PT >= startpos
&& PT <= ZV
&& startpos <= ZV
&& pos_visible_p (w, PT, &dummy_x, &dummy_y, &rtop, &rbot, &dummy_rowh,
&dummy_vpos)
&& !rtop && !rbot))
{
pos = *vmotion (PT, PT_BYTE, - (ht / 2), w);
startpos = pos.bufpos;
startbyte = pos.bytepos;
}
SET_PT_BOTH (startpos, startbyte);
bool lose = n < 0 && PT == BEGV;
pos = *vmotion (PT, PT_BYTE, n, w);
if (lose)
{
if (noerror)
return;
else
xsignal0 (Qbeginning_of_buffer);
}
bool bolp = pos.bufpos == BEGV || FETCH_BYTE (pos.bytepos - 1) == '\n';
if (pos.bufpos < ZV)
{
set_marker_restricted_both (w->start, w->contents,
pos.bufpos, pos.bytepos);
w->start_at_line_beg = bolp;
wset_update_mode_line (w);
/* Set force_start so that redisplay_window will run
the window-scroll-functions. */
w->force_start = true;
SET_PT_BOTH (pos.bufpos, pos.bytepos);
if (n > 0)
pos = *vmotion (PT, PT_BYTE, ht / 2, w);
else if (n < 0)
pos = *vmotion (PT, PT_BYTE, - (ht / 2), w);
SET_PT_BOTH (pos.bufpos, pos.bytepos);
/* Since `vmotion' computes coordinates after vscroll is applied,
it is taken into account in POS, and vscroll must be reset by
`force_start' in `redisplay_internal'. */
w->preserve_vscroll_p = false;
}
else
{
if (noerror)
return;
else
xsignal0 (Qend_of_buffer);
}
}
/* Implementation of window_scroll that works based on pixel line
heights. See the comment of window_scroll for parameter
descriptions. */
static void
window_scroll_pixel_based (Lisp_Object window, int n, bool whole, bool noerror)
{
struct it it;
struct window *w = XWINDOW (window);
struct text_pos start;
int this_scroll_margin;
/* True if we fiddled the window vscroll field without really scrolling. */
bool vscrolled = false;
int x, y, rtop, rbot, rowh, vpos;
void *itdata = NULL;
int frame_line_height = default_line_pixel_height (w);
bool adjust_old_pointm = !NILP (Fequal (Fwindow_point (window),
Fwindow_old_point (window)));
SET_TEXT_POS_FROM_MARKER (start, 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 (start) > ZV || CHARPOS (start) < BEGV)
SET_TEXT_POS (start, BEGV, BEGV_BYTE);
/* If PT is not visible in WINDOW, move back one half of
the screen. Allow PT to be partially visible, otherwise
something like (scroll-down 1) with PT in the line before
the partially visible one would recenter. */
if (!pos_visible_p (w, PT, &x, &y, &rtop, &rbot, &rowh, &vpos))
{
itdata = bidi_shelve_cache ();
/* Move backward half the height of the window. Performance note:
vmotion used here is about 10% faster, but would give wrong
results for variable height lines. */
init_iterator (&it, w, PT, PT_BYTE, NULL, DEFAULT_FACE_ID);
it.current_y = it.last_visible_y;
move_it_vertically_backward (&it, window_box_height (w) / 2);
/* The function move_iterator_vertically 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;
}
start = it.current.pos;
bidi_unshelve_cache (itdata, false);
}
else if (auto_window_vscroll_p)
{
if (rtop || rbot) /* Partially visible. */
{
int px;
int dy = frame_line_height;
/* In the below we divide the window box height by the
frame's line height to make the result predictable when
the window box is not an integral multiple of the line
height. This is important to ensure we get back to the
same position when scrolling up, then down. */
if (whole)
{
int ht = window_box_height (w);
int nscls = sanitize_next_screen_context_lines ();
dy = max (dy, (ht / dy - nscls) * dy);
}
dy *= n;
if (n < 0)
{
/* Only vscroll backwards if already vscrolled forwards. */
if (w->vscroll < 0 && rtop > 0)
{
px = max (0, -w->vscroll - min (rtop, -dy));
Fset_window_vscroll (window, make_fixnum (px), Qt,
Qnil);
return;
}
}
if (n > 0)
{
/* Do vscroll if already vscrolled or only display line. */
if (rbot > 0 && (w->vscroll < 0 || vpos == 0))
{
px = max (0, -w->vscroll + min (rbot, dy));
Fset_window_vscroll (window, make_fixnum (px), Qt,
Qnil);
return;
}
/* Maybe modify window start instead of scrolling. */
if (rbot > 0 || w->vscroll < 0)
{
ptrdiff_t spos;
Fset_window_vscroll (window, make_fixnum (0), Qt,
Qnil);
/* If there are other text lines above the current row,
move window start to current row. Else to next row. */
if (rbot > 0)
spos = XFIXNUM (Fline_beginning_position (Qnil));
else
spos = min (XFIXNUM (Fline_end_position (Qnil)) + 1, ZV);
set_marker_restricted (w->start, make_fixnum (spos),
w->contents);
w->start_at_line_beg = true;
wset_update_mode_line (w);
/* Set force_start so that redisplay_window will run the
window-scroll-functions. */
w->force_start = true;
return;
}
}
}
/* Cancel previous vscroll. */
Fset_window_vscroll (window, make_fixnum (0), Qt, Qnil);
}
itdata = bidi_shelve_cache ();
/* If scroll_preserve_screen_position is non-nil, we try to set
point in the same window line as it is now, so get that line. */
if (!NILP (Vscroll_preserve_screen_position))
{
/* We preserve the goal pixel coordinate across consecutive
calls to scroll-up, scroll-down and other commands that
have the `scroll-command' property. This avoids the
possibility of point becoming "stuck" on a tall line when
scrolling by one line. */
if (window_scroll_pixel_based_preserve_y < 0
|| !SYMBOLP (KVAR (current_kboard, Vlast_command))
|| NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command)))
{
start_display (&it, w, start);
move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
window_scroll_pixel_based_preserve_y = it.current_y;
window_scroll_pixel_based_preserve_x = it.current_x;
}
}
else
window_scroll_pixel_based_preserve_y
= window_scroll_pixel_based_preserve_x = -1;
/* Move iterator it from start the specified distance forward or
backward. The result is the new window start. */
start_display (&it, w, start);
if (whole)
{
ptrdiff_t start_pos = IT_CHARPOS (it);
int flh = frame_line_height;
int ht = window_box_height (w);
int nscls = sanitize_next_screen_context_lines ();
/* In the below we divide the window box height by the frame's
line height to make the result predictable when the window
box is not an integral multiple of the line height. This is
important to ensure we get back to the same position when
scrolling up, then down. */
int dy = n * max (flh, (ht / flh - nscls) * flh);
int goal_y;
void *it_data;
/* Note that move_it_vertically always moves the iterator to the
start of a line. So, if the last line doesn't have a newline,
we would end up at the start of the line ending at ZV. */
if (dy <= 0)
{
goal_y = it.current_y + dy;
move_it_vertically_backward (&it, -dy);
/* move_it_vertically_backward above always overshoots if DY
cannot be reached exactly, i.e. if it falls in the middle
of a screen line. But if that screen line is large
(e.g., a tall image), it might make more sense to
undershoot instead. */
if (goal_y - it.current_y > 0.5 * flh)
{
it_data = bidi_shelve_cache ();
struct it it1 = it;
if (line_bottom_y (&it1) - goal_y < goal_y - it.current_y)
move_it_by_lines (&it, 1);
bidi_unshelve_cache (it_data, true);
}
/* Ensure we actually do move, e.g. in case we are currently
looking at an image that is taller that the window height. */
while (start_pos == IT_CHARPOS (it)
&& start_pos > BEGV)
move_it_by_lines (&it, -1);
}
else if (dy > 0)
{
goal_y = it.current_y + dy;
move_it_to (&it, ZV, -1, goal_y, -1, MOVE_TO_POS | MOVE_TO_Y);
/* Extra precision for people who want us to preserve the
screen position of the cursor: effectively round DY to the
nearest screen line, instead of rounding to zero; the latter
causes point to move by one line after C-v followed by M-v,
if the buffer has lines of different height. */
if (!NILP (Vscroll_preserve_screen_position)
&& goal_y - it.current_y > 0.5 * flh)
{
it_data = bidi_shelve_cache ();
struct it it2 = it;
move_it_by_lines (&it, 1);
if (it.current_y > goal_y + 0.5 * flh)
{
it = it2;
bidi_unshelve_cache (it_data, false);
}
else
bidi_unshelve_cache (it_data, true);
}
/* Ensure we actually do move, e.g. in case we are currently
looking at an image that is taller that the window height. */
while (start_pos == IT_CHARPOS (it)
&& start_pos < ZV)
move_it_by_lines (&it, 1);
}
}
else
move_it_by_lines (&it, n);
/* We failed if we find ZV is already on the screen (scrolling up,
means there's nothing past the end), or if we can't start any
earlier (scrolling down, means there's nothing past the top). */
if ((n > 0 && IT_CHARPOS (it) == ZV)
|| (n < 0 && IT_CHARPOS (it) == CHARPOS (start)))
{
if (IT_CHARPOS (it) == ZV)
{
if (it.current_y < it.last_visible_y
&& (it.current_y + it.max_ascent + it.max_descent
> it.last_visible_y))
{
/* The last line was only partially visible, make it fully
visible. */
w->vscroll = (it.last_visible_y
- it.current_y + it.max_ascent + it.max_descent);
adjust_frame_glyphs (it.f);
}
else
{
bidi_unshelve_cache (itdata, false);
if (noerror)
return;
else if (n < 0) /* could happen with empty buffers */
xsignal0 (Qbeginning_of_buffer);
else
xsignal0 (Qend_of_buffer);
}
}
else
{
if (w->vscroll != 0)
/* The first line was only partially visible, make it fully
visible. */
w->vscroll = 0;
else
{
bidi_unshelve_cache (itdata, false);
if (noerror)
return;
else
xsignal0 (Qbeginning_of_buffer);
}
}
/* If control gets here, then we vscrolled. */
XBUFFER (w->contents)->prevent_redisplay_optimizations_p = true;
/* Don't try to change the window start below. */
vscrolled = true;
}
if (! vscrolled)
{
ptrdiff_t pos = IT_CHARPOS (it);
ptrdiff_t bytepos;
/* If in the middle of a multi-glyph character move forward to
the next character. */
if (in_display_vector_p (&it))
{
++pos;
move_it_to (&it, pos, -1, -1, -1, MOVE_TO_POS);
}
/* Set the window start, and set up the window for redisplay. */
set_marker_restricted_both (w->start, w->contents, IT_CHARPOS (it),
IT_BYTEPOS (it));
bytepos = marker_byte_position (w->start);
w->start_at_line_beg = (pos == BEGV || FETCH_BYTE (bytepos - 1) == '\n');
wset_update_mode_line (w);
/* Set force_start so that redisplay_window will run the
window-scroll-functions. */
w->force_start = true;
}
/* The rest of this function uses current_y in a nonstandard way,
not including the height of the header line if any. */
it.current_y = it.vpos = 0;
/* Move PT out of scroll margins.
This code wants current_y to be zero at the window start position
even if there is a header line. */
this_scroll_margin = window_scroll_margin (w, MARGIN_IN_PIXELS);
if (n > 0)
{
int last_y = it.last_visible_y - this_scroll_margin - 1;
/* We moved the window start towards ZV, so PT may be now
in the scroll margin at the top. */
if (IT_CHARPOS (it) < PT)
move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
if (IT_CHARPOS (it) == PT
&& it.current_y >= this_scroll_margin
&& it.current_y <= last_y - WINDOW_TAB_LINE_HEIGHT (w)
- WINDOW_HEADER_LINE_HEIGHT (w)
&& (NILP (Vscroll_preserve_screen_position)
|| EQ (Vscroll_preserve_screen_position, Qt)))
/* We found PT at a legitimate height. Leave it alone. */
;
else
{
if (window_scroll_pixel_based_preserve_y >= 0)
{
/* Don't enter the scroll margin at the end of the window. */
int goal_y = min (last_y, window_scroll_pixel_based_preserve_y);
/* If we have a header line, take account of it. This
is necessary because we set it.current_y to 0, above. */
move_it_to (&it, -1,
window_scroll_pixel_based_preserve_x,
goal_y - WINDOW_TAB_LINE_HEIGHT (w)
- WINDOW_HEADER_LINE_HEIGHT (w),
-1, MOVE_TO_Y | MOVE_TO_X);
}
/* Get out of the scroll margin at the top of the window. */
while (it.current_y < this_scroll_margin)
{
int prev = it.current_y;
move_it_by_lines (&it, 1);
if (prev == it.current_y)
break;
}
SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
/* Fix up the Y position to preserve, if it is inside the
scroll margin at the window top. */
if (window_scroll_pixel_based_preserve_y >= 0
&& window_scroll_pixel_based_preserve_y < this_scroll_margin)
window_scroll_pixel_based_preserve_y = this_scroll_margin;
}
}
else if (n < 0)
{
ptrdiff_t charpos, bytepos;
bool partial_p;
/* Save our position, for the
window_scroll_pixel_based_preserve_y case. */
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
/* We moved the window start towards BEGV, so PT may be now
in the scroll margin at the bottom. */
move_it_to (&it, PT, -1,
/* We subtract WINDOW_HEADER_LINE_HEIGHT because
it.y is relative to the bottom of the header
line, see above. */
(it.last_visible_y - WINDOW_TAB_LINE_HEIGHT (w)
- WINDOW_HEADER_LINE_HEIGHT (w)
- partial_line_height (&it) - this_scroll_margin - 1),
-1,
MOVE_TO_POS | MOVE_TO_Y);
/* Save our position, in case it's correct. */
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
/* If PT is in the screen line at the last fully visible line,
move_it_to will stop at X = 0 in that line, because the
required Y coordinate is reached there. See if we can get to
PT without descending lower in Y, and if we can, it means we
reached PT before the scroll margin. */
if (charpos != PT)
{
struct it it2;
void *it_data;
it2 = it;
it_data = bidi_shelve_cache ();
move_it_to (&it, PT, -1, -1, -1, MOVE_TO_POS);
if (IT_CHARPOS (it) == PT && it.current_y == it2.current_y)
{
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
bidi_unshelve_cache (it_data, true);
}
else
{
it = it2;
bidi_unshelve_cache (it_data, false);
}
}
/* See if point is on a partially visible line at the end. */
if (it.what == IT_EOB)
partial_p =
it.current_y + it.ascent + it.descent
> it.last_visible_y - this_scroll_margin
- WINDOW_TAB_LINE_HEIGHT (w) - WINDOW_HEADER_LINE_HEIGHT (w);
else
{
move_it_by_lines (&it, 1);
partial_p =
it.current_y
> it.last_visible_y - this_scroll_margin
- WINDOW_TAB_LINE_HEIGHT (w) - WINDOW_HEADER_LINE_HEIGHT (w);
}
if (charpos == PT && !partial_p
&& (NILP (Vscroll_preserve_screen_position)
|| EQ (Vscroll_preserve_screen_position, Qt)))
/* We found PT before we found the display margin, so PT is ok. */
;
else if (window_scroll_pixel_based_preserve_y >= 0)
{
int goal_y = min (it.last_visible_y - this_scroll_margin - 1,
window_scroll_pixel_based_preserve_y);
/* Don't let the preserved screen Y coordinate put us inside
any of the two margins. */
if (goal_y < this_scroll_margin)
goal_y = this_scroll_margin;
SET_TEXT_POS_FROM_MARKER (start, w->start);
start_display (&it, w, start);
/* It would be wrong to subtract WINDOW_HEADER_LINE_HEIGHT
here because we called start_display again and did not
alter it.current_y this time. */
move_it_to (&it, -1, window_scroll_pixel_based_preserve_x,
goal_y, -1, MOVE_TO_Y | MOVE_TO_X);
SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
}
else
{
if (partial_p)
/* The last line was only partially visible, so back up two
lines to make sure we're on a fully visible line. */
{
move_it_by_lines (&it, -2);
SET_PT_BOTH (IT_CHARPOS (it), IT_BYTEPOS (it));
}
else
/* No, the position we saved is OK, so use it. */
SET_PT_BOTH (charpos, bytepos);
}
}
bidi_unshelve_cache (itdata, false);
if (adjust_old_pointm)
Fset_marker (w->old_pointm,
((w == XWINDOW (selected_window))
? make_fixnum (BUF_PT (XBUFFER (w->contents)))
: Fmarker_position (w->pointm)),
w->contents);
}
/* Implementation of window_scroll that works based on screen lines.
See the comment of window_scroll for parameter descriptions. */
static void
window_scroll_line_based (Lisp_Object window, int n, bool whole, bool noerror)
{
struct window *w = XWINDOW (window);
/* Fvertical_motion enters redisplay, which can trigger
fontification, which in turn can modify buffer text (e.g., if the
fontification functions replace escape sequences with faces, as
in `grep-mode-font-lock-keywords'). So we use a marker to record
the old point position, to prevent crashes in SET_PT_BOTH. */
Lisp_Object opoint_marker = Fpoint_marker ();
register ptrdiff_t pos, pos_byte;
register int ht = window_internal_height (w);
register Lisp_Object tem;
bool lose;
Lisp_Object bolp;
ptrdiff_t startpos = marker_position (w->start);
ptrdiff_t startbyte = marker_byte_position (w->start);
Lisp_Object original_pos = Qnil;
bool adjust_old_pointm = !NILP (Fequal (Fwindow_point (window),
Fwindow_old_point (window)));
/* If scrolling screen-fulls, compute the number of lines to
scroll from the window's height. */
if (whole)
{
int nscls = sanitize_next_screen_context_lines ();
n *= max (1, ht - nscls);
}
if (!NILP (Vscroll_preserve_screen_position))
{
if (window_scroll_preserve_vpos <= 0
|| !SYMBOLP (KVAR (current_kboard, Vlast_command))
|| NILP (Fget (KVAR (current_kboard, Vlast_command), Qscroll_command)))
{
struct position posit
= *compute_motion (startpos, startbyte, 0, 0, false,
PT, ht, 0, -1, w->hscroll, 0, w);
window_scroll_preserve_vpos = posit.vpos;
window_scroll_preserve_hpos = posit.hpos + w->hscroll;
}
original_pos = Fcons (make_fixnum (window_scroll_preserve_hpos),
make_fixnum (window_scroll_preserve_vpos));
}
XSETFASTINT (tem, PT);
tem = Fpos_visible_in_window_p (tem, window, Qnil);
if (NILP (tem))
{
Fvertical_motion (make_fixnum (- (ht / 2)), window, Qnil);
startpos = PT;
startbyte = PT_BYTE;
}
SET_PT_BOTH (startpos, startbyte);
lose = n < 0 && PT == BEGV;
Fvertical_motion (make_fixnum (n), window, Qnil);
pos = PT;
pos_byte = PT_BYTE;
bolp = Fbolp ();
SET_PT_BOTH (marker_position (opoint_marker),
marker_byte_position (opoint_marker));
if (lose)
{
if (noerror)
return;
else
xsignal0 (Qbeginning_of_buffer);
}
if (pos < ZV)
{
int this_scroll_margin = window_scroll_margin (w, MARGIN_IN_LINES);
set_marker_restricted_both (w->start, w->contents, pos, pos_byte);
w->start_at_line_beg = !NILP (bolp);
wset_update_mode_line (w);
/* Set force_start so that redisplay_window will run
the window-scroll-functions. */
w->force_start = true;
if (!NILP (Vscroll_preserve_screen_position)
&& this_scroll_margin == 0
&& (whole || !EQ (Vscroll_preserve_screen_position, Qt)))
{
SET_PT_BOTH (pos, pos_byte);
Fvertical_motion (original_pos, window, Qnil);
}
/* If we scrolled forward, put point enough lines down
that it is outside the scroll margin. */
else if (n > 0)
{
int top_margin;
if (this_scroll_margin > 0)
{
SET_PT_BOTH (pos, pos_byte);
Fvertical_motion (make_fixnum (this_scroll_margin), window, Qnil);
top_margin = PT;
}
else
top_margin = pos;
if (top_margin <= marker_position (opoint_marker))
SET_PT_BOTH (marker_position (opoint_marker),
marker_byte_position (opoint_marker));
else if (!NILP (Vscroll_preserve_screen_position))
{
int nlines = window_scroll_preserve_vpos;
SET_PT_BOTH (pos, pos_byte);
if (window_scroll_preserve_vpos < this_scroll_margin)
nlines = this_scroll_margin;
else if (window_scroll_preserve_vpos
>= w->total_lines - this_scroll_margin)
nlines = w->total_lines - this_scroll_margin - 1;
Fvertical_motion (Fcons (make_fixnum (window_scroll_preserve_hpos),
make_fixnum (nlines)), window, Qnil);
}
else
SET_PT (top_margin);
}
else if (n < 0)
{
int bottom_margin;
/* If we scrolled backward, put point near the end of the window
but not within the scroll margin. */
SET_PT_BOTH (pos, pos_byte);
tem = Fvertical_motion (make_fixnum (ht - this_scroll_margin), window,
Qnil);
if (XFIXNAT (tem) == ht - this_scroll_margin)
bottom_margin = PT;
else
bottom_margin = PT + 1;
if (bottom_margin > marker_position (opoint_marker))
SET_PT_BOTH (marker_position (opoint_marker),
marker_byte_position (opoint_marker));
else
{
if (!NILP (Vscroll_preserve_screen_position))
{
int nlines = window_scroll_preserve_vpos;
SET_PT_BOTH (pos, pos_byte);
if (window_scroll_preserve_vpos < this_scroll_margin)
nlines = this_scroll_margin;
else if (window_scroll_preserve_vpos
>= ht - this_scroll_margin)
nlines = ht - this_scroll_margin - 1;
Fvertical_motion (Fcons (make_fixnum (window_scroll_preserve_hpos),
make_fixnum (nlines)), window, Qnil);
}
else
Fvertical_motion (make_fixnum (-1), window, Qnil);
}
}
}
else
{
if (noerror)
return;
else
xsignal0 (Qend_of_buffer);
}
if (adjust_old_pointm)
Fset_marker (w->old_pointm,
((w == XWINDOW (selected_window))
? make_fixnum (BUF_PT (XBUFFER (w->contents)))
: Fmarker_position (w->pointm)),
w->contents);
}
/* Scroll WINDOW up or down. If N is nil, scroll upward by a
screen-full which is defined as the height of the window minus
next_screen_context_lines. If N is the symbol `-', scroll downward
by a screen-full. DIRECTION may be 1 meaning to scroll down, or -1
meaning to scroll up. */
static void
scroll_command (Lisp_Object window, Lisp_Object n, int direction)
{
struct window *w;
bool other_window;
specpdl_ref count = SPECPDL_INDEX ();
eassert (eabs (direction) == 1);
w = XWINDOW (window);
other_window = ! EQ (window, selected_window);
/* If given window's buffer isn't current, make it current for the
moment. If the window's buffer is the same, but it is not the
selected window, we need to save-excursion to avoid affecting
point in the selected window (which would cause the selected
window to scroll). Don't screw up if window_scroll gets an
error. */
if (other_window || XBUFFER (w->contents) != current_buffer)
{
record_unwind_protect_excursion ();
if (XBUFFER (w->contents) != current_buffer)
Fset_buffer (w->contents);
}
if (other_window)
{
SET_PT_BOTH (marker_position (w->pointm),
marker_byte_position (w->pointm));
SET_PT_BOTH (marker_position (w->old_pointm),
marker_byte_position (w->old_pointm));
}
if (NILP (n))
window_scroll (window, direction, true, false);
else if (EQ (n, Qminus))
window_scroll (window, -direction, true, false);
else
{
n = Fprefix_numeric_value (n);
window_scroll (window, XFIXNUM (n) * direction, false, false);
}
if (other_window)
{
set_marker_both (w->pointm, Qnil, PT, PT_BYTE);
set_marker_both (w->old_pointm, Qnil, PT, PT_BYTE);
}
unbind_to (count, Qnil);
}
DEFUN ("scroll-up", Fscroll_up, Sscroll_up, 0, 1, "^P",
doc: /* Scroll text of selected window upward ARG lines.
If ARG is omitted or nil, scroll upward by a near full screen.
A near full screen is `next-screen-context-lines' less than a full screen.
Negative ARG means scroll downward.
If ARG is the atom `-', scroll downward by nearly full screen.
When calling from a program, supply as argument a number, nil, or `-'. */)
(Lisp_Object arg)
{
scroll_command (selected_window, arg, 1);
return Qnil;
}
DEFUN ("scroll-down", Fscroll_down, Sscroll_down, 0, 1, "^P",
doc: /* Scroll text of selected window down ARG lines.
If ARG is omitted or nil, scroll down by a near full screen.
A near full screen is `next-screen-context-lines' less than a full screen.
Negative ARG means scroll upward.
If ARG is the atom `-', scroll upward by nearly full screen.
When calling from a program, supply as argument a number, nil, or `-'. */)
(Lisp_Object arg)
{
scroll_command (selected_window, arg, -1);
return Qnil;
}
\f
DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, Sother_window_for_scrolling, 0, 0, 0,
doc: /* Return \"the other\" window for \"other window scroll\" commands.
If in the minibuffer, and `minibuffer-scroll-window' is non-nil,
it specifies the window to use.
Otherwise, if `other-window-scroll-buffer' is a buffer, a window
showing that buffer is the window to use, popping it up if necessary.
Otherwise, if `other-window-scroll-default' is a function, call it,
and the window it returns is the window to use.
Finally, the function looks for a neighboring window on the selected
frame, followed by windows on all the visible frames on the current
terminal. */)
(void)
{
Lisp_Object window;
if (MINI_WINDOW_P (XWINDOW (selected_window))
&& !NILP (Vminibuf_scroll_window))
window = Vminibuf_scroll_window;
/* If buffer is specified and live, scroll that buffer. */
else if (BUFFERP (Vother_window_scroll_buffer)
&& BUFFER_LIVE_P (XBUFFER (Vother_window_scroll_buffer)))
{
window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil);
if (NILP (window))
window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil);
}
else if (FUNCTIONP (Vother_window_scroll_default))
/* Nothing specified; try to get a window from the function. */
window = call0 (Vother_window_scroll_default);
else
{
/* Otherwise, look for a neighboring window on the same frame. */
window = Fnext_window (selected_window, Qlambda, Qnil);
if (EQ (window, selected_window))
/* That didn't get us anywhere; look for a window on another
visible frame on the current terminal. */
window = Fnext_window (window, Qlambda, Qvisible);
}
CHECK_LIVE_WINDOW (window);
if (EQ (window, selected_window))
error ("There is no other window");
return window;
}
\f
DEFUN ("scroll-left", Fscroll_left, Sscroll_left, 0, 2, "^P\np",
doc: /* Scroll selected window display ARG columns left.
Default for ARG is window width minus 2.
Value is the total amount of leftward horizontal scrolling in
effect after the change.
If SET-MINIMUM is non-nil, the new scroll amount becomes the
lower bound for automatic scrolling, i.e. automatic scrolling
will not scroll a window to a column less than the value returned
by this function. This happens in an interactive call. */)
(register Lisp_Object arg, Lisp_Object set_minimum)
{
struct window *w = XWINDOW (selected_window);
EMACS_INT requested_arg =
(NILP (arg)
? window_body_width (w, WINDOW_BODY_IN_CANONICAL_CHARS) - 2
: XFIXNUM (Fprefix_numeric_value (arg)));
Lisp_Object result = set_window_hscroll (w, w->hscroll + requested_arg);
if (!NILP (set_minimum))
w->min_hscroll = w->hscroll;
w->suspend_auto_hscroll = true;
return result;
}
DEFUN ("scroll-right", Fscroll_right, Sscroll_right, 0, 2, "^P\np",
doc: /* Scroll selected window display ARG columns right.
Default for ARG is window width minus 2.
Value is the total amount of leftward horizontal scrolling in
effect after the change.
If SET-MINIMUM is non-nil, the new scroll amount becomes the
lower bound for automatic scrolling, i.e. automatic scrolling
will not scroll a window to a column less than the value returned
by this function. This happens in an interactive call. */)
(register Lisp_Object arg, Lisp_Object set_minimum)
{
struct window *w = XWINDOW (selected_window);
EMACS_INT requested_arg =
(NILP (arg)
? window_body_width (w, WINDOW_BODY_IN_CANONICAL_CHARS) - 2
: XFIXNUM (Fprefix_numeric_value (arg)));
Lisp_Object result = set_window_hscroll (w, w->hscroll - requested_arg);
if (!NILP (set_minimum))
w->min_hscroll = w->hscroll;
w->suspend_auto_hscroll = true;
return result;
}
DEFUN ("minibuffer-selected-window", Fminibuffer_selected_window, Sminibuffer_selected_window, 0, 0, 0,
doc: /* Return window selected just before minibuffer window was selected.
Return nil if the selected window is not a minibuffer window. */)
(void)
{
if (minibuf_level > 0
&& MINI_WINDOW_P (XWINDOW (selected_window))
&& WINDOW_LIVE_P (minibuf_selected_window))
return minibuf_selected_window;
return Qnil;
}
/* Value is the number of lines actually displayed in window W,
as opposed to its height. */
static int
displayed_window_lines (struct window *w)
{
struct it it;
struct text_pos start;
int height = window_box_height (w);
struct buffer *old_buffer;
int bottom_y;
void *itdata = NULL;
if (XBUFFER (w->contents) != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal (XBUFFER (w->contents));
}
else
old_buffer = NULL;
/* In case W->start is out of the accessible range, do something
reasonable. This happens in Info mode when Info-scroll-down
calls (recenter -1) while W->start is 1. */
CLIP_TEXT_POS_FROM_MARKER (start, w->start);
itdata = bidi_shelve_cache ();
specpdl_ref count = SPECPDL_INDEX ();
record_unwind_protect_void (unwind_display_working_on_window);
display_working_on_window_p = true;
start_display (&it, w, start);
move_it_vertically (&it, height);
bottom_y = line_bottom_y (&it);
unbind_to (count, Qnil);
bidi_unshelve_cache (itdata, false);
/* Add in empty lines at the bottom of the window. */
if (bottom_y < height)
{
int uy = FRAME_LINE_HEIGHT (it.f);
it.vpos += (height - bottom_y + uy - 1) / uy;
}
else if (bottom_y == height)
it.vpos++;
if (old_buffer)
set_buffer_internal (old_buffer);
return it.vpos;
}
DEFUN ("recenter", Frecenter, Srecenter, 0, 2, "P\np",
doc: /* Center point in selected window and maybe redisplay frame.
With a numeric prefix argument ARG, recenter putting point on screen line ARG
relative to the selected window. If ARG is negative, it counts up from the
bottom of the window. (ARG should be less than the height of the window.)
If ARG is omitted or nil, then recenter with point on the middle line
of the selected window; if REDISPLAY & `recenter-redisplay' are
non-nil, also erase the entire frame and redraw it (when
`auto-resize-tool-bars' is set to `grow-only', this resets the
tool-bar's height to the minimum height needed); if
`recenter-redisplay' has the special value `tty', then only tty frames
are redrawn. Interactively, REDISPLAY is always non-nil.
Just C-u as prefix means put point in the center of the window
and redisplay normally--don't erase and redraw the frame. */)
(Lisp_Object arg, Lisp_Object redisplay)
{
struct window *w = XWINDOW (selected_window);
struct buffer *buf = XBUFFER (w->contents);
bool center_p = false;
ptrdiff_t charpos, bytepos;
EMACS_INT iarg UNINIT;
int this_scroll_margin;
/* For reasons why we signal an error here, see
https://lists.gnu.org/r/emacs-devel/2014-06/msg00053.html,
https://lists.gnu.org/r/emacs-devel/2014-06/msg00094.html. */
if (buf != current_buffer)
error ("`recenter'ing a window that does not display current-buffer");
/* If redisplay is suppressed due to an error, try again. */
buf->display_error_modiff = 0;
if (NILP (arg))
{
if (!NILP (redisplay)
&& !NILP (Vrecenter_redisplay)
&& (!EQ (Vrecenter_redisplay, Qtty)
|| !NILP (Ftty_type (selected_frame))))
{
ptrdiff_t i;
/* Invalidate pixel data calculated for all compositions. */
for (i = 0; i < n_compositions; i++)
composition_table[i]->font = NULL;
#if defined (HAVE_WINDOW_SYSTEM)
WINDOW_XFRAME (w)->minimize_tab_bar_window_p = 1;
#endif
#if defined (HAVE_WINDOW_SYSTEM) && ! defined (HAVE_EXT_TOOL_BAR)
WINDOW_XFRAME (w)->minimize_tool_bar_window_p = 1;
#endif
Fredraw_frame (WINDOW_FRAME (w));
SET_FRAME_GARBAGED (WINDOW_XFRAME (w));
}
center_p = true;
}
else if (CONSP (arg)) /* Just C-u. */
center_p = true;
else
{
arg = Fprefix_numeric_value (arg);
CHECK_FIXNUM (arg);
iarg = XFIXNUM (arg);
}
/* Do this after making BUF current
in case scroll_margin is buffer-local. */
this_scroll_margin = window_scroll_margin (w, MARGIN_IN_LINES);
/* Don't use the display code for initial frames, as the necessary
data structures might not be set up yet then. Also don't use it
for buffers with very long lines, as it tremdously slows down
redisplay, especially when lines are truncated. */
if (!FRAME_INITIAL_P (XFRAME (w->frame))
&& !current_buffer->long_line_optimizations_p)
{
specpdl_ref count = SPECPDL_INDEX ();
record_unwind_protect_void (unwind_display_working_on_window);
display_working_on_window_p = true;
if (center_p)
{
struct it it;
struct text_pos pt;
void *itdata = bidi_shelve_cache ();
SET_TEXT_POS (pt, PT, PT_BYTE);
start_display (&it, w, pt);
move_it_vertically_backward (&it, window_box_height (w) / 2);
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
bidi_unshelve_cache (itdata, false);
}
else if (iarg < 0)
{
struct it it;
struct text_pos pt;
ptrdiff_t nlines = min (PTRDIFF_MAX, -iarg);
int extra_line_spacing;
int h = window_box_height (w);
int ht = window_internal_height (w);
void *itdata = bidi_shelve_cache ();
nlines = clip_to_bounds (this_scroll_margin + 1, nlines,
ht - this_scroll_margin);
SET_TEXT_POS (pt, PT, PT_BYTE);
start_display (&it, w, pt);
/* Be sure we have the exact height of the full line containing PT. */
move_it_by_lines (&it, 0);
/* The amount of pixels we have to move back is the window
height minus what's displayed in the line containing PT,
and the lines below. */
it.current_y = 0;
it.vpos = 0;
move_it_by_lines (&it, nlines);
if (it.vpos == nlines)
h -= it.current_y;
else
{
/* Last line has no newline. */
h -= line_bottom_y (&it);
it.vpos++;
}
/* Don't reserve space for extra line spacing of last line. */
extra_line_spacing = it.max_extra_line_spacing;
/* If we can't move down NLINES lines because we hit
the end of the buffer, count in some empty lines. */
if (it.vpos < nlines)
{
nlines -= it.vpos;
extra_line_spacing = it.extra_line_spacing;
h -= nlines * (FRAME_LINE_HEIGHT (it.f) + extra_line_spacing);
}
if (h <= 0)
{
bidi_unshelve_cache (itdata, false);
unbind_to (count, Qnil);
return Qnil;
}
/* Now find the new top line (starting position) of the window. */
start_display (&it, w, pt);
it.current_y = 0;
move_it_vertically_backward (&it, h);
/* If extra line spacing is present, we may move too far
back. This causes the last line to be only partially
visible (which triggers redisplay to recenter that line
in the middle), so move forward.
But ignore extra line spacing on last line, as it is not
considered to be part of the visible height of the line.
*/
h += extra_line_spacing;
while (-it.current_y > h && it.what != IT_EOB)
move_it_by_lines (&it, 1);
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
bidi_unshelve_cache (itdata, false);
}
else
{
struct it it;
struct text_pos pt;
ptrdiff_t nlines = min (PTRDIFF_MAX, iarg);
int ht = window_internal_height (w);
void *itdata = bidi_shelve_cache ();
nlines = clip_to_bounds (this_scroll_margin, nlines,
ht - this_scroll_margin - 1);
SET_TEXT_POS (pt, PT, PT_BYTE);
start_display (&it, w, pt);
/* Move to the beginning of screen line containing PT. */
move_it_by_lines (&it, 0);
/* Move back to find the point which is ARG screen lines above PT. */
if (nlines > 0)
{
it.current_y = 0;
it.vpos = 0;
move_it_by_lines (&it, -nlines);
}
charpos = IT_CHARPOS (it);
bytepos = IT_BYTEPOS (it);
bidi_unshelve_cache (itdata, false);
}
unbind_to (count, Qnil);
}
else
{
struct position pos;
int ht = window_internal_height (w);
if (center_p)
iarg = ht / 2;
else if (iarg < 0)
iarg += ht;
/* Don't let it get into the margin at either top or bottom. */
iarg = clip_to_bounds (this_scroll_margin, iarg,
ht - this_scroll_margin - 1);
pos = *vmotion (PT, PT_BYTE, - iarg, w);
charpos = pos.bufpos;
bytepos = pos.bytepos;
}
/* Set the new window start. */
set_marker_both (w->start, w->contents, charpos, bytepos);
/* The window start was calculated with an iterator already adjusted
by the existing vscroll, so w->start must not be combined with
retaining the existing vscroll, which redisplay will not reset if
w->preserve_vscroll_p is enabled. (bug#70386) */
w->vscroll = 0;
w->preserve_vscroll_p = false;
w->window_end_valid = false;
w->optional_new_start = true;
w->start_at_line_beg = (bytepos == BEGV_BYTE
|| FETCH_BYTE (bytepos - 1) == '\n');
wset_redisplay (w);
return Qnil;
}
DEFUN ("window-text-width", Fwindow_text_width, Swindow_text_width,
0, 2, 0,
doc: /* Return the width in columns of the text display area of WINDOW.
WINDOW must be a live window and defaults to the selected one.
The returned width does not include dividers, scrollbars, margins,
fringes, nor any partial-width columns at the right of the text
area.
Optional argument PIXELWISE non-nil, means to return the width in
pixels. */)
(Lisp_Object window, Lisp_Object pixelwise)
{
struct window *w = decode_live_window (window);
if (NILP (pixelwise))
return make_fixnum (window_box_width (w, TEXT_AREA)
/ FRAME_COLUMN_WIDTH (WINDOW_XFRAME (w)));
else
return make_fixnum (window_box_width (w, TEXT_AREA));
}
DEFUN ("window-text-height", Fwindow_text_height, Swindow_text_height,
0, 2, 0,
doc: /* Return the height in lines of the text display area of WINDOW.
WINDOW must be a live window and defaults to the selected one.
The returned height does not include dividers, the mode line, any header
line, nor any partial-height lines at the bottom of the text area.
Optional argument PIXELWISE non-nil, means to return the height in
pixels. */)
(Lisp_Object window, Lisp_Object pixelwise)
{
struct window *w = decode_live_window (window);
if (NILP (pixelwise))
return make_fixnum (window_box_height (w)
/ FRAME_LINE_HEIGHT (WINDOW_XFRAME (w)));
else
return make_fixnum (window_box_height (w));
}
\f
DEFUN ("move-to-window-line", Fmove_to_window_line, Smove_to_window_line,
1, 1, "P",
doc: /* Position point relative to window.
ARG nil means position point at center of window.
Else, ARG specifies vertical position within the window;
zero means top of window, negative means relative to bottom
of window, -1 meaning the last fully visible display line
of the window.
Value is the screen line of the window point moved to, counting
from the top of the window. */)
(Lisp_Object arg)
{
struct window *w = XWINDOW (selected_window);
int lines, start;
Lisp_Object window;
#if false
int this_scroll_margin;
#endif
if (!(BUFFERP (w->contents) && XBUFFER (w->contents) == current_buffer))
/* This test is needed to make sure PT/PT_BYTE make sense in w->contents
when passed below to set_marker_both. */
error ("move-to-window-line called from unrelated buffer");
window = selected_window;
start = marker_position (w->start);
if (start < BEGV || start > ZV)
{
int height = window_internal_height (w);
Fvertical_motion (make_fixnum (- (height / 2)), window, Qnil);
set_marker_both (w->start, w->contents, PT, PT_BYTE);
w->start_at_line_beg = !NILP (Fbolp ());
w->force_start = true;
/* Since `Fvertical_motion' computes coordinates after vscroll is
applied, it is taken into account in POS, and vscroll must be
reset by `force_start' in `redisplay_internal'. */
w->preserve_vscroll_p = false;
}
else
Fgoto_char (w->start);
lines = displayed_window_lines (w);
if (NILP (arg))
XSETFASTINT (arg, lines / 2);
else
{
EMACS_INT iarg = XFIXNUM (Fprefix_numeric_value (arg));
if (iarg < 0)
iarg = iarg + lines;
#if false /* This code would prevent move-to-window-line from moving point
to a place inside the scroll margins (which would cause the
next redisplay to scroll). I wrote this code, but then concluded
it is probably better not to install it. However, it is here
inside #if false so as not to lose it. -- rms. */
this_scroll_margin = window_scroll_margin (w, MARGIN_IN_LINES);
/* Don't let it get into the margin at either top or bottom. */
iarg = max (iarg, this_scroll_margin);
iarg = min (iarg, lines - this_scroll_margin - 1);
#endif
arg = make_fixnum (iarg);
}
/* Skip past a partially visible first line. */
if (w->vscroll)
XSETINT (arg, XFIXNUM (arg) + 1);
return Fvertical_motion (arg, window, Qnil);
}
\f
/***********************************************************************
Window Configuration
***********************************************************************/
struct save_window_data
{
union vectorlike_header header;
Lisp_Object selected_frame;
Lisp_Object current_window;
Lisp_Object f_current_buffer;
Lisp_Object minibuf_scroll_window;
Lisp_Object minibuf_selected_window;
Lisp_Object root_window;
Lisp_Object focus_frame;
/* A vector, each of whose elements is a struct saved_window
for one window. */
Lisp_Object saved_windows;
/* All fields above are traced by the GC.
After saved_windows, the fields are ignored by the GC. */
/* We should be able to do without the following two. */
int frame_cols, frame_lines;
/* These three should get eventually replaced by their pixel
counterparts. */
int frame_menu_bar_lines, frame_tab_bar_lines, frame_tool_bar_lines;
int frame_text_width, frame_text_height;
/* These are currently unused. We need them as soon as we convert
to pixels. */
int frame_menu_bar_height, frame_tab_bar_height, frame_tool_bar_height;
} GCALIGNED_STRUCT;
/* This is saved as a Lisp_Vector. */
struct saved_window
{
union vectorlike_header header;
Lisp_Object window, buffer, start, pointm, old_pointm;
Lisp_Object pixel_left, pixel_top, pixel_height, pixel_width;
Lisp_Object left_col, top_line, total_cols, total_lines;
Lisp_Object normal_cols, normal_lines;
Lisp_Object hscroll, min_hscroll, hscroll_whole, suspend_auto_hscroll;
Lisp_Object vscroll;
Lisp_Object parent, prev;
Lisp_Object start_at_line_beg;
Lisp_Object display_table;
Lisp_Object left_margin_cols, right_margin_cols;
Lisp_Object left_fringe_width, right_fringe_width;
Lisp_Object fringes_outside_margins, fringes_persistent;
Lisp_Object scroll_bar_width, vertical_scroll_bar_type;
Lisp_Object scroll_bar_height, horizontal_scroll_bar_type;
Lisp_Object scroll_bars_persistent, dedicated;
Lisp_Object combination_limit, window_parameters;
};
#define SAVED_WINDOW_N(swv,n) \
((struct saved_window *) (XVECTOR ((swv)->contents[(n)])))
DEFUN ("window-configuration-p", Fwindow_configuration_p, Swindow_configuration_p, 1, 1, 0,
doc: /* Return t if OBJECT is a window-configuration object. */)
(Lisp_Object object)
{
return WINDOW_CONFIGURATIONP (object) ? Qt : Qnil;
}
DEFUN ("window-configuration-frame", Fwindow_configuration_frame, Swindow_configuration_frame, 1, 1, 0,
doc: /* Return the frame that CONFIG, a window-configuration object, is about. */)
(Lisp_Object config)
{
register struct save_window_data *data;
struct Lisp_Vector *saved_windows;
CHECK_WINDOW_CONFIGURATION (config);
data = (struct save_window_data *) XVECTOR (config);
saved_windows = XVECTOR (data->saved_windows);
return XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame;
}
DEFUN ("set-window-configuration", Fset_window_configuration,
Sset_window_configuration, 1, 3, 0,
doc: /* Set the configuration of windows and buffers as specified by CONFIGURATION.
CONFIGURATION must be a value previously returned
by `current-window-configuration' (which see).
Normally, this function selects the frame of the CONFIGURATION, but if
DONT-SET-FRAME is non-nil, it leaves selected the frame which was
current at the start of the function. If DONT-SET-MINIWINDOW is non-nil,
the mini-window of the frame doesn't get set to the corresponding element
of CONFIGURATION.
This function consults the variable `window-restore-killed-buffer-windows'
when restoring a window whose buffer was killed after CONFIGURATION was
recorded.
If CONFIGURATION was made from a frame that is now deleted,
only frame-independent values can be restored. In this case,
the return value is nil. Otherwise the value is t. */)
(Lisp_Object configuration, Lisp_Object dont_set_frame,
Lisp_Object dont_set_miniwindow)
{
register struct save_window_data *data;
struct Lisp_Vector *saved_windows;
Lisp_Object new_current_buffer;
Lisp_Object frame;
Lisp_Object kept_windows = Qnil;
Lisp_Object old_frame = selected_frame;
struct frame *f;
ptrdiff_t old_point = -1;
USE_SAFE_ALLOCA;
CHECK_WINDOW_CONFIGURATION (configuration);
data = (struct save_window_data *) XVECTOR (configuration);
saved_windows = XVECTOR (data->saved_windows);
new_current_buffer = data->f_current_buffer;
if (!BUFFER_LIVE_P (XBUFFER (new_current_buffer)))
new_current_buffer = Qnil;
else
{
if (XBUFFER (new_current_buffer) == current_buffer)
/* The code further down "preserves point" by saving here PT in
old_point and then setting it later back into PT. When the
current-selected-window and the final-selected-window both show
the current buffer, this suffers from the problem that the
current PT is the window-point of the current-selected-window,
while the final PT is the point of the final-selected-window, so
this copy from one PT to the other would end up moving the
window-point of the final-selected-window to the window-point of
the current-selected-window. So we have to be careful which
point of the current-buffer we copy into old_point. */
if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)
&& WINDOWP (selected_window)
&& EQ (XWINDOW (selected_window)->contents, new_current_buffer)
&& !EQ (selected_window, data->current_window))
old_point = marker_position (XWINDOW (data->current_window)->pointm);
else
old_point = PT;
else
/* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
point in new_current_buffer as of the last time this buffer was
used. This can be non-deterministic since it can be changed by
things like jit-lock by mere temporary selection of some random
window that happens to show this buffer.
So if possible we want this arbitrary choice of "which point" to
be the one from the to-be-selected-window so as to prevent this
window's cursor from being copied from another window. */
if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer)
/* If current_window = selected_window, its point is in BUF_PT. */
&& !EQ (selected_window, data->current_window))
old_point = marker_position (XWINDOW (data->current_window)->pointm);
else
old_point = BUF_PT (XBUFFER (new_current_buffer));
}
frame = XWINDOW (SAVED_WINDOW_N (saved_windows, 0)->window)->frame;
f = XFRAME (frame);
/* If f is a dead frame, don't bother rebuilding its window tree.
However, there is other stuff we should still try to do below. */
if (FRAME_LIVE_P (f))
{
Lisp_Object window;
Lisp_Object dead_windows = Qnil;
Lisp_Object tem, par, pers;
struct window *w;
struct saved_window *p;
struct window *root_window;
struct window **leaf_windows;
ptrdiff_t i, k, n_leaf_windows;
/* Don't do this within the main loop below: This may call Lisp
code and is thus potentially unsafe while input is blocked. */
for (k = 0; k < saved_windows->header.size; k++)
{
p = SAVED_WINDOW_N (saved_windows, k);
window = p->window;
w = XWINDOW (window);
if (BUFFERP (w->contents)
&& !EQ (w->contents, p->buffer)
&& BUFFER_LIVE_P (XBUFFER (p->buffer))
&& (NILP (Fminibufferp (p->buffer, Qnil))))
/* If a window we restore gets another buffer, record the
window's old buffer. */
call1 (Qrecord_window_buffer, window);
}
/* Disallow set_window_size_hook, temporarily. */
f->can_set_window_size = false;
/* The mouse highlighting code could get screwed up
if it runs during this. */
block_input ();
/* "Swap out" point from the selected window's buffer
into the window itself. (Normally the pointm of the selected
window holds garbage.) We do this now, before
restoring the window contents, and prevent it from
being done later on when we select a new window. */
if (! NILP (XWINDOW (selected_window)->contents))
{
w = XWINDOW (selected_window);
set_marker_both (w->pointm,
w->contents,
BUF_PT (XBUFFER (w->contents)),
BUF_PT_BYTE (XBUFFER (w->contents)));
}
fset_redisplay (f);
/* Problem: Freeing all matrices and later allocating them again
is a serious redisplay flickering problem. What we would
really like to do is to free only those matrices not reused
below. */
root_window = XWINDOW (FRAME_ROOT_WINDOW (f));
ptrdiff_t nwindows = count_windows (root_window);
SAFE_NALLOCA (leaf_windows, 1, nwindows);
n_leaf_windows = get_leaf_windows (root_window, leaf_windows, 0);
/* Kludge Alert!
Mark all windows now on frame as "deleted".
Restoring the new configuration "undeletes" any that are in it.
Save their current buffers in their height fields, since we may
need it later, if a buffer saved in the configuration is now
dead. */
delete_all_child_windows (FRAME_ROOT_WINDOW (f));
for (k = 0; k < saved_windows->header.size; k++)
{
p = SAVED_WINDOW_N (saved_windows, k);
window = p->window;
w = XWINDOW (window);
wset_next (w, Qnil);
if (!NILP (p->parent))
wset_parent
(w, SAVED_WINDOW_N (saved_windows, XFIXNAT (p->parent))->window);
else
wset_parent (w, Qnil);
if (!NILP (p->prev))
{
wset_prev
(w, SAVED_WINDOW_N (saved_windows, XFIXNAT (p->prev))->window);
wset_next (XWINDOW (w->prev), p->window);
}
else
{
wset_prev (w, Qnil);
if (!NILP (w->parent))
wset_combination (XWINDOW (w->parent),
(XFIXNUM (p->total_cols)
!= XWINDOW (w->parent)->total_cols),
p->window);
}
/* If we squirreled away the buffer, restore it now. */
if (BUFFERP (w->combination_limit))
wset_buffer (w, w->combination_limit);
w->pixel_left = XFIXNAT (p->pixel_left);
w->pixel_top = XFIXNAT (p->pixel_top);
w->pixel_width = XFIXNAT (p->pixel_width);
w->pixel_height = XFIXNAT (p->pixel_height);
w->left_col = XFIXNAT (p->left_col);
w->top_line = XFIXNAT (p->top_line);
w->total_cols = XFIXNAT (p->total_cols);
w->total_lines = XFIXNAT (p->total_lines);
wset_normal_cols (w, p->normal_cols);
wset_normal_lines (w, p->normal_lines);
w->hscroll = XFIXNAT (p->hscroll);
w->suspend_auto_hscroll = !NILP (p->suspend_auto_hscroll);
w->min_hscroll = XFIXNAT (p->min_hscroll);
w->hscroll_whole = XFIXNAT (p->hscroll_whole);
w->vscroll = -XFIXNAT (p->vscroll);
wset_display_table (w, p->display_table);
w->left_margin_cols = XFIXNUM (p->left_margin_cols);
w->right_margin_cols = XFIXNUM (p->right_margin_cols);
w->left_fringe_width = XFIXNUM (p->left_fringe_width);
w->right_fringe_width = XFIXNUM (p->right_fringe_width);
w->fringes_outside_margins = !NILP (p->fringes_outside_margins);
w->fringes_persistent = !NILP (p->fringes_persistent);
w->scroll_bar_width = XFIXNUM (p->scroll_bar_width);
w->scroll_bar_height = XFIXNUM (p->scroll_bar_height);
w->scroll_bars_persistent = !NILP (p->scroll_bars_persistent);
wset_vertical_scroll_bar_type (w, p->vertical_scroll_bar_type);
wset_horizontal_scroll_bar_type (w, p->horizontal_scroll_bar_type);
wset_dedicated (w, p->dedicated);
wset_combination_limit (w, p->combination_limit);
/* Restore any window parameters that have been saved.
Parameters that have not been saved are left alone. */
for (tem = p->window_parameters; CONSP (tem); tem = XCDR (tem))
{
pers = XCAR (tem);
if (CONSP (pers))
{
if (NILP (XCDR (pers)))
{
par = Fassq (XCAR (pers), w->window_parameters);
if (CONSP (par) && !NILP (XCDR (par)))
/* Reset a parameter to nil if and only if it
has a non-nil association. Don't make new
associations. */
Fsetcdr (par, Qnil);
}
else
/* Always restore a non-nil value. */
Fset_window_parameter (window, XCAR (pers), XCDR (pers));
}
}
/* Remove window from the table of dead windows. */
Fremhash (make_fixnum (w->sequence_number),
window_dead_windows_table);
if ((NILP (dont_set_miniwindow) || !MINI_WINDOW_P (w))
&& BUFFERP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer)))
/* If saved buffer is alive, install it, unless it's a
minibuffer we explicitly prohibit. */
{
if (!EQ (w->contents, p->buffer))
{
wset_buffer (w, p->buffer);
window_discard_buffer_from_window (w->contents, window, false);
}
w->start_at_line_beg = !NILP (p->start_at_line_beg);
set_marker_restricted (w->start, p->start, w->contents);
set_marker_restricted (w->pointm, p->pointm, w->contents);
set_marker_restricted (w->old_pointm, p->old_pointm, w->contents);
/* As documented in Fcurrent_window_configuration, don't
restore the location of point in the buffer which was
current when the window configuration was recorded. */
if (!EQ (p->buffer, new_current_buffer)
&& XBUFFER (p->buffer) == current_buffer)
Fgoto_char (w->pointm);
}
else if (BUFFERP (w->contents) && BUFFER_LIVE_P (XBUFFER (w->contents)))
/* Keep window's old buffer; make sure the markers are real. */
{
/* Set window markers at start of visible range. */
if (XMARKER (w->start)->buffer == 0)
set_marker_restricted_both (w->start, w->contents, 0, 0);
if (XMARKER (w->pointm)->buffer == 0)
set_marker_restricted_both
(w->pointm, w->contents,
BUF_PT (XBUFFER (w->contents)),
BUF_PT_BYTE (XBUFFER (w->contents)));
if (XMARKER (w->old_pointm)->buffer == 0)
set_marker_restricted_both
(w->old_pointm, w->contents,
BUF_PT (XBUFFER (w->contents)),
BUF_PT_BYTE (XBUFFER (w->contents)));
w->start_at_line_beg = true;
if (FUNCTIONP (window_restore_killed_buffer_windows)
&& !MINI_WINDOW_P (w))
kept_windows = Fcons (listn (6, window, p->buffer,
Fmarker_last_position (p->start),
Fmarker_last_position (p->pointm),
p->dedicated, Qt),
kept_windows);
}
else if (!NILP (w->start))
/* Leaf window has no live buffer, get one. */
{
/* Get the buffer via other_buffer_safely in order to
avoid showing an unimportant buffer and, if necessary, to
recreate *scratch* in the course (part of Juanma's bs-show
scenario from March 2011). */
wset_buffer (w, other_buffer_safely (Fcurrent_buffer ()));
window_discard_buffer_from_window (w->contents, window, false);
/* This will set the markers to beginning of visible
range. */
set_marker_restricted_both (w->start, w->contents, 0, 0);
set_marker_restricted_both (w->pointm, w->contents, 0, 0);
set_marker_restricted_both (w->old_pointm, w->contents, 0, 0);
w->start_at_line_beg = true;
if (!MINI_WINDOW_P (w))
{
if (FUNCTIONP (window_restore_killed_buffer_windows))
kept_windows
= Fcons (listn (6, window, p->buffer,
Fmarker_last_position (p->start),
Fmarker_last_position (p->pointm),
p->dedicated, Qnil),
kept_windows);
else if (EQ (window_restore_killed_buffer_windows, Qdelete)
|| (!NILP (p->dedicated)
&& (NILP (window_restore_killed_buffer_windows)
|| EQ (window_restore_killed_buffer_windows,
Qdedicated))))
/* Try to delete this window later. */
dead_windows = Fcons (window, dead_windows);
/* Make sure window is no more dedicated. */
wset_dedicated (w, Qnil);
}
}
}
fset_root_window (f, data->root_window);
/* Arrange *not* to restore point in the buffer that was
current when the window configuration was saved. */
if (EQ (XWINDOW (data->current_window)->contents, new_current_buffer))
set_marker_restricted (XWINDOW (data->current_window)->pointm,
make_fixnum (old_point),
XWINDOW (data->current_window)->contents);
/* In the following call to select_window, prevent "swapping out
point" in the old selected window using the buffer that has
been restored into it. We already swapped out that point
from that window's old buffer.
Do not record the buffer here. We do that in a separate call
to select_window below. See also Bug#16207. */
select_window (data->current_window, Qt, true);
BVAR (XBUFFER (XWINDOW (selected_window)->contents),
last_selected_window)
= selected_window;
/* We may have deleted windows above. Then again, maybe we
haven't: the functions we call to maybe delete windows can
decide a window cannot be deleted. Force recalculation of
Vwindow_list next time it is needed, to make sure stale
windows with no buffers don't escape into the wild, which
will cause crashes elsewhere. */
Vwindow_list = Qnil;
if (NILP (data->focus_frame)
|| (FRAMEP (data->focus_frame)
&& FRAME_LIVE_P (XFRAME (data->focus_frame))))
Fredirect_frame_focus (frame, data->focus_frame);
/* Now, free glyph matrices in windows that were not reused. */
for (i = 0; i < n_leaf_windows; i++)
if (NILP (leaf_windows[i]->contents))
free_window_matrices (leaf_windows[i]);
/* Allow set_window_size_hook again and resize frame's windows
if necessary. But change frame size only to preserve window
minimum sizes. */
f->can_set_window_size = true;
adjust_frame_size (f, -1, -1, 4, false, Qset_window_configuration);
adjust_frame_glyphs (f);
unblock_input ();
/* Scan dead buffer windows. */
for (; CONSP (dead_windows); dead_windows = XCDR (dead_windows))
{
window = XCAR (dead_windows);
if (WINDOW_LIVE_P (window) && !EQ (window, FRAME_ROOT_WINDOW (f)))
delete_deletable_window (window);
}
/* Record the selected window's buffer here. The window should
already be the selected one from the call above. */
if (WINDOW_LIVE_P (data->current_window))
select_window (data->current_window, Qnil, false);
/* select_window will have made f the selected frame, so we
reselect the proper frame here. do_switch_frame will change
the selected window too, but that doesn't make the call to
select_window above totally superfluous; it still sets f's
selected window. */
if (FRAME_LIVE_P (XFRAME (data->selected_frame)))
do_switch_frame (NILP (dont_set_frame)
? data->selected_frame
: old_frame
, 0, 0, Qnil);
}
FRAME_WINDOW_CHANGE (f) = true;
if (!NILP (new_current_buffer))
{
Fset_buffer (new_current_buffer);
/* If the new current buffer doesn't appear in the selected
window, go to its old point (Bug#12208).
The original fix used data->current_window below which caused
false positives (compare Bug#31695) when data->current_window
is not on data->selected_frame. This happens, for example,
when read_minibuf restores the configuration of a stand-alone
minibuffer frame: After switching to the previously selected
"normal" frame, point of that frame's selected window jumped
unexpectedly because new_current_buffer is usually *not*
shown in data->current_window - the minibuffer frame's
selected window. Using selected_window instead fixes this
because do_switch_frame has set up selected_window already to
the "normal" frame's selected window and that window *does*
show new_current_buffer. */
if (!EQ (XWINDOW (selected_window)->contents, new_current_buffer))
Fgoto_char (make_fixnum (old_point));
}
Vminibuf_scroll_window = data->minibuf_scroll_window;
minibuf_selected_window = data->minibuf_selected_window;
SAFE_FREE ();
if (!NILP (Vrun_hooks) && FUNCTIONP (window_restore_killed_buffer_windows))
safe_calln (window_restore_killed_buffer_windows,
frame, kept_windows, Qconfiguration);
return FRAME_LIVE_P (f) ? Qt : Qnil;
}
void
restore_window_configuration (Lisp_Object configuration)
{
if (CONSP (configuration))
Fset_window_configuration (XCAR (configuration),
Fcar_safe (XCDR (configuration)),
Fcar_safe (Fcdr_safe (XCDR (configuration))));
else
Fset_window_configuration (configuration, Qnil, Qnil);
}
/* If WINDOW is an internal window, recursively delete all child windows
reachable via the next and contents slots of WINDOW. Otherwise setup
WINDOW to not show any buffer. */
void
delete_all_child_windows (Lisp_Object window)
{
register struct window *w;
w = XWINDOW (window);
if (!NILP (w->next))
/* Delete WINDOW's siblings (we traverse postorderly). */
delete_all_child_windows (w->next);
if (WINDOWP (w->contents))
{
delete_all_child_windows (w->contents);
wset_combination (w, false, Qnil);
}
else if (BUFFERP (w->contents))
{
if (MARKERP (w->pointm))
w->del_pointm = marker_position (w->pointm);
if (MARKERP (w->start))
w->del_start = marker_position (w->start);
unshow_buffer (w);
unchain_marker (XMARKER (w->pointm));
unchain_marker (XMARKER (w->old_pointm));
unchain_marker (XMARKER (w->start));
/* Since combination limit makes sense for an internal windows
only, we use this slot to save the buffer for the sake of
possible resurrection in Fset_window_configuration. */
wset_combination_limit (w, w->contents);
wset_old_buffer (w, w->contents);
wset_buffer (w, Qnil);
/* Add WINDOW to table of dead windows so when killing a buffer
WINDOW mentions, all references to that buffer can be removed
and the buffer be collected. */
Fputhash (make_fixnum (w->sequence_number),
window, window_dead_windows_table);
}
Vwindow_list = Qnil;
}
\f
static ptrdiff_t
count_windows (struct window *window)
{
ptrdiff_t count = 1;
if (!NILP (window->next))
count += count_windows (XWINDOW (window->next));
if (WINDOWP (window->contents))
count += count_windows (XWINDOW (window->contents));
return count;
}
/* Fill vector FLAT with leaf windows under W, starting at index I.
Value is last index + 1. */
static ptrdiff_t
get_leaf_windows (struct window *w, struct window **flat, ptrdiff_t i)
{
while (w)
{
if (WINDOWP (w->contents))
i = get_leaf_windows (XWINDOW (w->contents), flat, i);
else
flat[i++] = w;
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
return i;
}
/* Return a pointer to the glyph W's physical cursor is on. Value is
null if W's current matrix is invalid, so that no meaningful glyph
can be returned. */
struct glyph *
get_phys_cursor_glyph (struct window *w)
{
struct glyph_row *row;
struct glyph *glyph;
int hpos = w->phys_cursor.hpos;
if (!(w->phys_cursor.vpos >= 0
&& w->phys_cursor.vpos < w->current_matrix->nrows))
return NULL;
row = MATRIX_ROW (w->current_matrix, w->phys_cursor.vpos);
if (!row->enabled_p)
return NULL;
if (w->hscroll)
{
/* 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;
}
if (0 <= hpos && hpos < row->used[TEXT_AREA])
glyph = row->glyphs[TEXT_AREA] + hpos;
else
glyph = NULL;
return glyph;
}
static ptrdiff_t
save_window_save (Lisp_Object window, struct Lisp_Vector *vector, ptrdiff_t i)
{
struct saved_window *p;
struct window *w;
Lisp_Object tem, pers, par;
for (; !NILP (window); window = w->next)
{
p = SAVED_WINDOW_N (vector, i);
w = XWINDOW (window);
wset_temslot (w, make_fixnum (i)); i++;
p->window = window;
p->buffer = (WINDOW_LEAF_P (w) ? w->contents : Qnil);
p->pixel_left = make_fixnum (w->pixel_left);
p->pixel_top = make_fixnum (w->pixel_top);
p->pixel_width = make_fixnum (w->pixel_width);
p->pixel_height = make_fixnum (w->pixel_height);
p->left_col = make_fixnum (w->left_col);
p->top_line = make_fixnum (w->top_line);
p->total_cols = make_fixnum (w->total_cols);
p->total_lines = make_fixnum (w->total_lines);
p->normal_cols = w->normal_cols;
p->normal_lines = w->normal_lines;
XSETFASTINT (p->hscroll, w->hscroll);
p->suspend_auto_hscroll = w->suspend_auto_hscroll ? Qt : Qnil;
XSETFASTINT (p->min_hscroll, w->min_hscroll);
XSETFASTINT (p->hscroll_whole, w->hscroll_whole);
XSETFASTINT (p->vscroll, -w->vscroll);
p->display_table = w->display_table;
p->left_margin_cols = make_fixnum (w->left_margin_cols);
p->right_margin_cols = make_fixnum (w->right_margin_cols);
p->left_fringe_width = make_fixnum (w->left_fringe_width);
p->right_fringe_width = make_fixnum (w->right_fringe_width);
p->fringes_outside_margins = w->fringes_outside_margins ? Qt : Qnil;
p->fringes_persistent = w->fringes_persistent ? Qt : Qnil;
p->scroll_bar_width = make_fixnum (w->scroll_bar_width);
p->scroll_bar_height = make_fixnum (w->scroll_bar_height);
p->scroll_bars_persistent = w->scroll_bars_persistent ? Qt : Qnil;
p->vertical_scroll_bar_type = w->vertical_scroll_bar_type;
p->horizontal_scroll_bar_type = w->horizontal_scroll_bar_type;
p->dedicated = w->dedicated;
p->combination_limit = w->combination_limit;
p->window_parameters = Qnil;
if (!NILP (Vwindow_persistent_parameters))
{
/* Run cycle detection on Vwindow_persistent_parameters. */
Lisp_Object tortoise, hare;
hare = tortoise = Vwindow_persistent_parameters;
while (CONSP (hare))
{
hare = XCDR (hare);
if (!CONSP (hare))
break;
hare = XCDR (hare);
tortoise = XCDR (tortoise);
if (BASE_EQ (hare, tortoise))
/* Reset Vwindow_persistent_parameters to Qnil. */
{
Vwindow_persistent_parameters = Qnil;
break;
}
}
for (tem = Vwindow_persistent_parameters; CONSP (tem);
tem = XCDR (tem))
{
pers = XCAR (tem);
/* Save values for persistent window parameters. */
if (CONSP (pers) && !NILP (XCDR (pers)))
{
par = Fassq (XCAR (pers), w->window_parameters);
if (NILP (par))
/* If the window has no value for the parameter,
make one. */
p->window_parameters = Fcons (Fcons (XCAR (pers), Qnil),
p->window_parameters);
else
/* If the window has a value for the parameter,
save it. */
p->window_parameters = Fcons (Fcons (XCAR (par),
XCDR (par)),
p->window_parameters);
}
}
}
if (BUFFERP (w->contents))
{
bool window_point_insertion_type
= !NILP (buffer_local_value
(Qwindow_point_insertion_type, w->contents));
/* Save w's value of point in the window configuration. If w
is the selected window, then get the value of point from
the buffer; pointm is garbage in the selected window. */
if (EQ (window, selected_window))
p->pointm = build_marker (XBUFFER (w->contents),
BUF_PT (XBUFFER (w->contents)),
BUF_PT_BYTE (XBUFFER (w->contents)));
else
p->pointm = Fcopy_marker (w->pointm, Qnil);
p->old_pointm = Fcopy_marker (w->old_pointm, Qnil);
XMARKER (p->pointm)->insertion_type = window_point_insertion_type;
XMARKER (p->old_pointm)->insertion_type = window_point_insertion_type;
p->start = Fcopy_marker (w->start, Qnil);
p->start_at_line_beg = w->start_at_line_beg ? Qt : Qnil;
}
else
{
p->pointm = Qnil;
p->old_pointm = Qnil;
p->start = Qnil;
p->start_at_line_beg = Qnil;
}
p->parent = NILP (w->parent) ? Qnil : XWINDOW (w->parent)->temslot;
p->prev = NILP (w->prev) ? Qnil : XWINDOW (w->prev)->temslot;
if (WINDOWP (w->contents))
i = save_window_save (w->contents, vector, i);
}
return i;
}
DEFUN ("current-window-configuration", Fcurrent_window_configuration,
Scurrent_window_configuration, 0, 1, 0,
doc: /* Return an object representing the current window configuration of FRAME.
If FRAME is nil or omitted, use the selected frame.
This describes the number of windows, their sizes and current buffers,
and for each displayed buffer, where display starts, and the position of
point. An exception is made for point in the current buffer:
its value is -not- saved.
This also records the currently selected frame, and FRAME's focus
redirection (see `redirect-frame-focus'). The variable
`window-persistent-parameters' specifies which window parameters are
saved by this function. */)
(Lisp_Object frame)
{
struct frame *f = decode_live_frame (frame);
ptrdiff_t n_windows = count_windows (XWINDOW (FRAME_ROOT_WINDOW (f)));
struct save_window_data *data
= ALLOCATE_PSEUDOVECTOR (struct save_window_data, saved_windows,
PVEC_WINDOW_CONFIGURATION);
data->frame_cols = FRAME_COLS (f);
data->frame_lines = FRAME_LINES (f);
data->frame_menu_bar_lines = FRAME_MENU_BAR_LINES (f);
data->frame_tab_bar_lines = FRAME_TAB_BAR_LINES (f);
data->frame_tool_bar_lines = FRAME_TOOL_BAR_LINES (f);
data->frame_text_width = FRAME_TEXT_WIDTH (f);
data->frame_text_height = FRAME_TEXT_HEIGHT (f);
data->frame_menu_bar_height = FRAME_MENU_BAR_HEIGHT (f);
data->frame_tab_bar_height = FRAME_TAB_BAR_HEIGHT (f);
data->frame_tool_bar_height = FRAME_TOOL_BAR_HEIGHT (f);
data->selected_frame = selected_frame;
data->current_window = FRAME_SELECTED_WINDOW (f);
XSETBUFFER (data->f_current_buffer, current_buffer);
data->minibuf_scroll_window = minibuf_level > 0 ? Vminibuf_scroll_window : Qnil;
data->minibuf_selected_window = minibuf_level > 0 ? minibuf_selected_window : Qnil;
data->root_window = FRAME_ROOT_WINDOW (f);
data->focus_frame = FRAME_FOCUS_FRAME (f);
Lisp_Object tem = make_nil_vector (n_windows);
data->saved_windows = tem;
for (ptrdiff_t i = 0; i < n_windows; i++)
ASET (tem, i, make_nil_vector (VECSIZE (struct saved_window)));
save_window_save (FRAME_ROOT_WINDOW (f), XVECTOR (tem), 0);
XSETWINDOW_CONFIGURATION (tem, data);
return tem;
}
/* Called after W's margins, fringes or scroll bars was adjusted. */
static void
apply_window_adjustment (struct window *w)
{
eassert (w);
clear_glyph_matrix (w->current_matrix);
w->window_end_valid = false;
wset_redisplay (w);
adjust_frame_glyphs (XFRAME (WINDOW_FRAME (w)));
}
\f
/***********************************************************************
Marginal Areas
***********************************************************************/
static int
extract_dimension (Lisp_Object dimension)
{
if (NILP (dimension))
return -1;
return check_integer_range (dimension, 0, INT_MAX);
}
static struct window *
set_window_margins (struct window *w, Lisp_Object left_width,
Lisp_Object right_width)
{
int unit = WINDOW_FRAME_COLUMN_WIDTH (w);
int left = NILP (left_width) ? 0 : extract_dimension (left_width);
int right = NILP (right_width) ? 0 : extract_dimension (right_width);
if (w->left_margin_cols != left || w->right_margin_cols != right)
{
/* Don't change anything if new margins won't fit. */
if ((WINDOW_PIXEL_WIDTH (w)
- WINDOW_FRINGES_WIDTH (w)
- WINDOW_SCROLL_BAR_AREA_WIDTH (w)
- (left + right) * unit)
>= MIN_SAFE_WINDOW_PIXEL_WIDTH (w))
{
w->left_margin_cols = left;
w->right_margin_cols = right;
return w;
}
else
return NULL;
}
else
return NULL;
}
DEFUN ("set-window-margins", Fset_window_margins, Sset_window_margins,
2, 3, 0,
doc: /* Set width of marginal areas of window WINDOW.
WINDOW must be a live window and defaults to the selected one.
Second arg LEFT-WIDTH specifies the number of character cells to
reserve for the left marginal area. Optional third arg RIGHT-WIDTH
does the same for the right marginal area. A nil width parameter
means no margin.
Leave margins unchanged if WINDOW is not large enough to accommodate
margins of the desired width. Return t if any margin was actually
changed and nil otherwise.
The margins specified by calling this function may be later overridden
by invoking `set-window-buffer' for the same WINDOW, with its
KEEP-MARGINS argument nil or omitted. */)
(Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width)
{
struct window *w = set_window_margins (decode_live_window (window),
left_width, right_width);
return w ? (apply_window_adjustment (w), Qt) : Qnil;
}
DEFUN ("window-margins", Fwindow_margins, Swindow_margins,
0, 1, 0,
doc: /* Get width of marginal areas of window WINDOW.
WINDOW must be a live window and defaults to the selected one.
Value is a cons of the form (LEFT-WIDTH . RIGHT-WIDTH).
If a marginal area does not exist, its width will be returned
as nil. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
return Fcons (w->left_margin_cols
? make_fixnum (w->left_margin_cols) : Qnil,
w->right_margin_cols
? make_fixnum (w->right_margin_cols) : Qnil);
}
\f
/***********************************************************************
Fringes
***********************************************************************/
static struct window *
set_window_fringes (struct window *w,
Lisp_Object left_width, Lisp_Object right_width,
Lisp_Object outside_margins, Lisp_Object persistent)
{
/* Do nothing on a tty. */
if (!FRAME_WINDOW_P (WINDOW_XFRAME (w)))
return NULL;
else
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
int old_left = WINDOW_LEFT_FRINGE_WIDTH (w);
int old_right = WINDOW_RIGHT_FRINGE_WIDTH (w);
int new_left = extract_dimension (left_width);
int new_right = extract_dimension (right_width);
bool outside = !NILP (outside_margins);
bool changed = false;
bool failed = false;
/* Check dimensions of new fringes. Make changes only if they
fit the window's dimensions. */
if ((WINDOW_PIXEL_WIDTH (w)
- WINDOW_MARGINS_WIDTH (w)
- WINDOW_SCROLL_BAR_AREA_WIDTH (w)
- WINDOW_RIGHT_DIVIDER_WIDTH (w)
- (new_left == -1 ? FRAME_LEFT_FRINGE_WIDTH (f) : new_left)
- (new_right == -1 ? FRAME_RIGHT_FRINGE_WIDTH (f) : new_right))
>= MIN_SAFE_WINDOW_PIXEL_WIDTH (w))
{
w->left_fringe_width = new_left;
w->right_fringe_width = new_right;
changed = new_left != old_left || new_right != old_right;
}
else
failed = true;
/* Placing fringes outside margins. */
if (outside != w->fringes_outside_margins)
{
w->fringes_outside_margins = outside;
changed = true;
}
/* Make settings persistent unless we failed to apply some
changes. */
if (!failed)
w->fringes_persistent = !NILP (persistent);
/* This is needed to trigger immediate redisplay of the window
when its fringes are changed, because fringes are redrawn
only if update_window is called, so we must trigger that even
if the window's glyph matrices did not change at all. */
if (changed)
{
windows_or_buffers_changed = 35;
return w;
}
else
return NULL;
}
}
DEFUN ("set-window-fringes", Fset_window_fringes, Sset_window_fringes,
2, 5, 0,
doc: /* Set fringes of specified WINDOW.
WINDOW must specify a live window and defaults to the selected one.
Second arg LEFT-WIDTH specifies the number of pixels to reserve for
the left fringe. Optional third arg RIGHT-WIDTH specifies the right
fringe width. If a fringe width arg is nil, that means to use the
frame's default fringe width. Default fringe widths can be set with
the command `set-fringe-style'.
If optional fourth arg OUTSIDE-MARGINS is non-nil, draw the fringes
outside of the display margins. By default, fringes are drawn between
display marginal areas and the text area.
Optional fifth argument PERSISTENT non-nil means that fringe settings
for WINDOW are persistent, i.e., remain unchanged when another buffer
is shown in WINDOW. PERSISTENT nil means that fringes are reset from
buffer local values when `set-window-buffer' is called on WINDOW with
the argument KEEP-MARGINS nil.
Leave fringes unchanged if WINDOW is not large enough to accommodate
fringes of the desired width. Return t if any fringe was actually
changed and nil otherwise. */)
(Lisp_Object window, Lisp_Object left_width, Lisp_Object right_width,
Lisp_Object outside_margins, Lisp_Object persistent)
{
struct window *w
= set_window_fringes (decode_live_window (window), left_width,
right_width, outside_margins, persistent);
return w ? (apply_window_adjustment (w), Qt) : Qnil;
}
DEFUN ("window-fringes", Fwindow_fringes, Swindow_fringes,
0, 1, 0,
doc: /* Return fringe settings for specified WINDOW.
WINDOW must be a live window and defaults to the selected one.
Value is a list of the form (LEFT-WIDTH RIGHT-WIDTH OUTSIDE-MARGINS
PERSISTENT), see `set-window-fringes'. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
return list4 (make_fixnum (WINDOW_LEFT_FRINGE_WIDTH (w)),
make_fixnum (WINDOW_RIGHT_FRINGE_WIDTH (w)),
WINDOW_HAS_FRINGES_OUTSIDE_MARGINS (w) ? Qt : Qnil,
w->fringes_persistent ? Qt : Qnil);
}
DEFUN ("set-window-cursor-type", Fset_window_cursor_type,
Sset_window_cursor_type, 2, 2, 0,
doc: /* Set the `cursor-type' of WINDOW to TYPE.
This setting takes precedence over the variable `cursor-type', and TYPE
has the same format as the value of that variable. The initial value
for new windows is t, which says to respect the buffer-local value of
`cursor-type'.
WINDOW nil means use the selected window. This setting persists across
buffers shown in WINDOW, so `set-window-buffer' does not reset it. */)
(Lisp_Object window, Lisp_Object type)
{
struct window *w = decode_live_window (window);
if (!(NILP (type)
|| EQ (type, Qt)
|| EQ (type, Qbox)
|| EQ (type, Qhollow)
|| EQ (type, Qbar)
|| EQ (type, Qhbar)
|| (CONSP (type)
&& (EQ (XCAR (type), Qbox)
|| EQ (XCAR (type), Qbar)
|| EQ (XCAR (type), Qhbar))
&& INTEGERP (XCDR (type)))))
error ("Invalid cursor type");
wset_cursor_type (w, type);
/* Redisplay with updated cursor type. */
wset_redisplay (w);
return type;
}
/* FIXME: Add a way to get the _effective_ cursor type, possibly by
extending this function with an additional optional argument. */
DEFUN ("window-cursor-type", Fwindow_cursor_type, Swindow_cursor_type,
0, 1, 0,
doc: /* Return the `cursor-type' of WINDOW.
WINDOW must be a live window and defaults to the selected one. */)
(Lisp_Object window)
{
return decode_live_window (window)->cursor_type;
}
\f
/***********************************************************************
Scroll bars
***********************************************************************/
static struct window *
set_window_scroll_bars (struct window *w, Lisp_Object width,
Lisp_Object vertical_type, Lisp_Object height,
Lisp_Object horizontal_type, Lisp_Object persistent)
{
/* Do nothing on a tty. */
if (!FRAME_WINDOW_P (WINDOW_XFRAME (w)))
return NULL;
else
{
struct frame *f = XFRAME (WINDOW_FRAME (w));
int new_width = extract_dimension (width);
bool changed = false;
bool failed = false;
if (new_width == 0)
vertical_type = Qnil;
else if (!(NILP (vertical_type)
|| EQ (vertical_type, Qleft)
|| EQ (vertical_type, Qright)
|| EQ (vertical_type, Qt)))
error ("Invalid type of vertical scroll bar");
/* Check dimension of new scroll bar. Make changes only if it
fit the window's dimensions. */
if ((WINDOW_PIXEL_WIDTH (w)
- WINDOW_MARGINS_WIDTH (w)
- WINDOW_FRINGES_WIDTH (w)
- WINDOW_RIGHT_DIVIDER_WIDTH (w)
- (new_width == -1 ? FRAME_SCROLL_BAR_AREA_WIDTH (f) : new_width))
>= MIN_SAFE_WINDOW_PIXEL_WIDTH (w))
{
changed = (!EQ (vertical_type, w->vertical_scroll_bar_type)
|| new_width != WINDOW_SCROLL_BAR_AREA_WIDTH (w));
wset_vertical_scroll_bar_type (w, vertical_type);
w->scroll_bar_width = new_width;
}
else
failed = true;
#if USE_HORIZONTAL_SCROLL_BARS
int new_height = extract_dimension (height);
if ((MINI_WINDOW_P (w) && !EQ (horizontal_type, Qbottom))
|| new_height == 0)
horizontal_type = Qnil;
if (!(NILP (horizontal_type)
|| EQ (horizontal_type, Qbottom)
|| EQ (horizontal_type, Qt)))
error ("Invalid type of horizontal scroll bar");
/* Don't change anything if new scroll bar won't fit. */
if ((WINDOW_PIXEL_HEIGHT (w)
- WINDOW_TAB_LINE_HEIGHT (w)
- WINDOW_HEADER_LINE_HEIGHT (w)
- WINDOW_MODE_LINE_HEIGHT (w)
- (new_height == -1 ? FRAME_SCROLL_BAR_AREA_HEIGHT (f) : new_height))
>= MIN_SAFE_WINDOW_PIXEL_HEIGHT (w))
{
changed = (changed
|| !EQ (horizontal_type, w->horizontal_scroll_bar_type)
|| new_height != WINDOW_SCROLL_BAR_AREA_HEIGHT (w));
wset_horizontal_scroll_bar_type (w, horizontal_type);
w->scroll_bar_height = new_height;
}
else
failed = true;
#else
wset_horizontal_scroll_bar_type (w, Qnil);
#endif
/* Make settings persistent unless we failed to apply some
changes. */
if (!failed)
w->scroll_bars_persistent = !NILP (persistent);
/* This is needed to trigger immediate redisplay of the window when
scroll bars are changed, because scroll bars are redisplayed only
if more than a single window needs to be considered, see
redisplay_internal. */
if (changed)
wset_redisplay (w);
return changed ? w : NULL;
}
}
DEFUN ("set-window-scroll-bars", Fset_window_scroll_bars,
Sset_window_scroll_bars, 1, 6, 0,
doc: /* Set width and type of scroll bars of specified WINDOW.
WINDOW must specify a live window and defaults to the selected one.
Second argument WIDTH specifies the pixel width for the vertical scroll
bar. If WIDTH is nil, use the scroll bar width of WINDOW's frame.
Third argument VERTICAL-TYPE specifies the type of the vertical scroll
bar: left, right, nil or t where nil means to not display a vertical
scroll bar on WINDOW and t means to use WINDOW frame's vertical scroll
bar type.
Fourth argument HEIGHT specifies the pixel height for the horizontal
scroll bar. If HEIGHT is nil, use the scroll bar height of WINDOW's
frame. Fifth argument HORIZONTAL-TYPE specifies the type of the
horizontal scroll bar: bottom, nil, or t where nil means to not
display a horizontal scroll bar on WINDOW and t means to use WINDOW
frame's horizontal scroll bar type. If WINDOW is a mini window, t
effectively behaves like nil. HORIZONTAL-TYPE must equal bottom in
order to show a scroll bar for mini windows.
Optional sixth argument PERSISTENT non-nil means that scroll bar
settings for WINDOW are persistent, i.e., remain unchanged when
another buffer is shown in WINDOW. PERSISTENT nil means that scroll
bars are reset from buffer local values when `set-window-buffer' is
called on WINDOW with the argument KEEP-MARGINS nil.
If WINDOW is not large enough to accommodate a scroll bar of the
desired dimension, leave the corresponding scroll bar unchanged.
Return t if scroll bars were actually changed and nil otherwise. */)
(Lisp_Object window, Lisp_Object width, Lisp_Object vertical_type,
Lisp_Object height, Lisp_Object horizontal_type, Lisp_Object persistent)
{
struct window *w
= set_window_scroll_bars (decode_live_window (window),
width, vertical_type, height,
horizontal_type, persistent);
return w ? (apply_window_adjustment (w), Qt) : Qnil;
}
DEFUN ("window-scroll-bars", Fwindow_scroll_bars, Swindow_scroll_bars,
0, 1, 0,
doc: /* Get width and type of scroll bars of window WINDOW.
WINDOW must be a live window and defaults to the selected one.
Value is a list of the form (WIDTH COLUMNS VERTICAL-TYPE HEIGHT LINES
HORIZONTAL-TYPE PERSISTENT). WIDTH reports the pixel width of the
vertical scroll bar; COLUMNS is the equivalent number of columns.
Similarly, HEIGHT and LINES are the height of the horizontal scroll
bar in pixels and the equivalent number of lines. VERTICAL-TYPE
reports the type of the vertical scroll bar, either left, right, nil,
or t. HORIZONTAL-TYPE reports the type of the horizontal scroll bar,
either bottom, nil or t. PERSISTENT reports the value specified by
the last successful call to `set-window-scroll-bars', or nil if there
was none.
If WIDTH or HEIGHT is nil or VERTICAL-TYPE or HORIZONTAL-TYPE is t,
WINDOW is using the corresponding value specified for the frame. */)
(Lisp_Object window)
{
struct window *w = decode_live_window (window);
return Fcons (((w->scroll_bar_width >= 0)
? make_fixnum (w->scroll_bar_width)
: Qnil),
Fcons (make_fixnum (WINDOW_SCROLL_BAR_COLS (w)),
list5 (w->vertical_scroll_bar_type,
((w->scroll_bar_height >= 0)
? make_fixnum (w->scroll_bar_height)
: Qnil),
make_fixnum (WINDOW_SCROLL_BAR_LINES (w)),
w->horizontal_scroll_bar_type,
w->scroll_bars_persistent ? Qt : Qnil)));
}
\f
/***********************************************************************
Smooth scrolling
***********************************************************************/
DEFUN ("window-vscroll", Fwindow_vscroll, Swindow_vscroll, 0, 2, 0,
doc: /* Return the amount by which WINDOW is scrolled vertically.
This takes effect when displaying tall lines or images.
If WINDOW is omitted or nil, it defaults to the selected window.
Normally, value is a multiple of the canonical character height of WINDOW;
optional second arg PIXELS-P means value is measured in pixels. */)
(Lisp_Object window, Lisp_Object pixels_p)
{
Lisp_Object result;
struct window *w = decode_live_window (window);
struct frame *f = XFRAME (w->frame);
if (FRAME_WINDOW_P (f))
result = (NILP (pixels_p)
? FRAME_CANON_Y_FROM_PIXEL_Y (f, -w->vscroll)
: make_fixnum (-w->vscroll));
else
result = make_fixnum (0);
return result;
}
DEFUN ("set-window-vscroll", Fset_window_vscroll, Sset_window_vscroll,
2, 4, 0,
doc: /* Set amount by which WINDOW should be scrolled vertically to VSCROLL.
This takes effect when displaying tall lines or images.
WINDOW nil means use the selected window. Normally, VSCROLL is a
non-negative multiple of the canonical character height of WINDOW;
optional third arg PIXELS-P non-nil means that VSCROLL is in pixels.
If PIXELS-P is nil, VSCROLL may have to be rounded so that it
corresponds to an integral number of pixels. The return value is the
result of this rounding.
If PIXELS-P is non-nil, the return value is VSCROLL.
PRESERVE-VSCROLL-P makes setting the start of WINDOW preserve the
vscroll if its start is "frozen" due to a resized mini-window. */)
(Lisp_Object window, Lisp_Object vscroll, Lisp_Object pixels_p,
Lisp_Object preserve_vscroll_p)
{
struct window *w = decode_live_window (window);
struct frame *f = XFRAME (w->frame);
CHECK_NUMBER (vscroll);
if (FRAME_WINDOW_P (f))
{
int old_dy = w->vscroll;
w->vscroll = - (NILP (pixels_p)
? FRAME_LINE_HEIGHT (f) * XFLOATINT (vscroll)
: XFLOATINT (vscroll));
w->vscroll = min (w->vscroll, 0);
if (w->vscroll != old_dy)
{
/* Adjust glyph matrix of the frame if the virtual display
area becomes larger than before. */
if (w->vscroll < 0 && w->vscroll < old_dy)
adjust_frame_glyphs (f);
/* Prevent redisplay shortcuts. */
XBUFFER (w->contents)->prevent_redisplay_optimizations_p = true;
/* Mark W for redisplay. (bug#55299) */
wset_redisplay (w);
}
w->preserve_vscroll_p = !NILP (preserve_vscroll_p);
}
return Fwindow_vscroll (window, pixels_p);
}
\f
/* Call FN for all leaf windows on frame F. FN is called with the
first argument being a pointer to the leaf window, and with
additional argument USER_DATA. Stops when FN returns 0. */
static void
foreach_window (struct frame *f, bool (*fn) (struct window *, void *),
void *user_data)
{
/* delete_frame may set FRAME_ROOT_WINDOW (f) to Qnil. */
if (WINDOWP (FRAME_ROOT_WINDOW (f)))
foreach_window_1 (XWINDOW (FRAME_ROOT_WINDOW (f)), fn, user_data);
}
/* Helper function for foreach_window. Call FN for all leaf windows
reachable from W. FN is called with the first argument being a
pointer to the leaf window, and with additional argument USER_DATA.
Stop when FN returns false. Value is false if stopped by FN. */
static bool
foreach_window_1 (struct window *w, bool (*fn) (struct window *, void *),
void *user_data)
{
bool cont;
for (cont = true; w && cont;)
{
if (WINDOWP (w->contents))
cont = foreach_window_1 (XWINDOW (w->contents), fn, user_data);
else
cont = fn (w, user_data);
w = NILP (w->next) ? 0 : XWINDOW (w->next);
}
return cont;
}
/***********************************************************************
Initialization
***********************************************************************/
/* Return true if window configurations CONFIGURATION1 and CONFIGURATION2
describe the same state of affairs. This is used by Fequal.
Ignore non-matching scroll positions and the like.
This ignores a couple of things like the dedication status of
window, combination_limit and the like. This might have to be
fixed. */
static bool
compare_window_configurations (Lisp_Object configuration1,
Lisp_Object configuration2)
{
struct save_window_data *d1, *d2;
struct Lisp_Vector *sws1, *sws2;
ptrdiff_t i;
CHECK_WINDOW_CONFIGURATION (configuration1);
CHECK_WINDOW_CONFIGURATION (configuration2);
d1 = (struct save_window_data *) XVECTOR (configuration1);
d2 = (struct save_window_data *) XVECTOR (configuration2);
sws1 = XVECTOR (d1->saved_windows);
sws2 = XVECTOR (d2->saved_windows);
/* Frame settings must match. */
if (d1->frame_cols != d2->frame_cols
|| d1->frame_lines != d2->frame_lines
|| d1->frame_menu_bar_lines != d2->frame_menu_bar_lines
|| !EQ (d1->selected_frame, d2->selected_frame)
|| !EQ (d1->f_current_buffer, d2->f_current_buffer)
|| !EQ (d1->focus_frame, d2->focus_frame)
/* Verify that the two configurations have the same number of windows. */
|| sws1->header.size != sws2->header.size)
return false;
for (i = 0; i < sws1->header.size; i++)
{
struct saved_window *sw1, *sw2;
sw1 = SAVED_WINDOW_N (sws1, i);
sw2 = SAVED_WINDOW_N (sws2, i);
if (
/* The "current" windows in the two configurations must
correspond to each other. */
EQ (d1->current_window, sw1->window)
!= EQ (d2->current_window, sw2->window)
/* Windows' buffers must match. */
|| !EQ (sw1->buffer, sw2->buffer)
|| !EQ (sw1->pixel_left, sw2->pixel_left)
|| !EQ (sw1->pixel_top, sw2->pixel_top)
|| !EQ (sw1->pixel_height, sw2->pixel_height)
|| !EQ (sw1->pixel_width, sw2->pixel_width)
|| !EQ (sw1->left_col, sw2->left_col)
|| !EQ (sw1->top_line, sw2->top_line)
|| !EQ (sw1->total_cols, sw2->total_cols)
|| !EQ (sw1->total_lines, sw2->total_lines)
|| !EQ (sw1->display_table, sw2->display_table)
/* The next two disjuncts check the window structure for
equality. */
|| !EQ (sw1->parent, sw2->parent)
|| !EQ (sw1->prev, sw2->prev)
|| !EQ (sw1->left_margin_cols, sw2->left_margin_cols)
|| !EQ (sw1->right_margin_cols, sw2->right_margin_cols)
|| !EQ (sw1->left_fringe_width, sw2->left_fringe_width)
|| !EQ (sw1->right_fringe_width, sw2->right_fringe_width)
|| !EQ (sw1->fringes_outside_margins, sw2->fringes_outside_margins)
|| !EQ (sw1->fringes_persistent, sw2->fringes_persistent)
|| !EQ (sw1->scroll_bar_width, sw2->scroll_bar_width)
|| !EQ (sw1->scroll_bar_height, sw2->scroll_bar_height)
|| !EQ (sw1->vertical_scroll_bar_type, sw2->vertical_scroll_bar_type)
|| !EQ (sw1->horizontal_scroll_bar_type, sw2->horizontal_scroll_bar_type)
|| !EQ (sw1->scroll_bars_persistent, sw2->scroll_bars_persistent))
return false;
}
return true;
}
DEFUN ("window-configuration-equal-p", Fwindow_configuration_equal_p,
Swindow_configuration_equal_p, 2, 2, 0,
doc: /* Say whether two window configurations have the same window layout.
This function ignores details such as the values of point and
scrolling positions. */)
(Lisp_Object x, Lisp_Object y)
{
if (compare_window_configurations (x, y))
return Qt;
return Qnil;
}
\f
static void init_window_once_for_pdumper (void);
void
init_window_once (void)
{
minibuf_window = Qnil;
staticpro (&minibuf_window);
selected_window = Qnil;
staticpro (&selected_window);
Vwindow_list = Qnil;
staticpro (&Vwindow_list);
minibuf_selected_window = Qnil;
staticpro (&minibuf_selected_window);
old_selected_window = Qnil;
staticpro (&old_selected_window);
pdumper_do_now_and_after_late_load (init_window_once_for_pdumper);
}
static void init_window_once_for_pdumper (void)
{
window_scroll_pixel_based_preserve_x = -1;
window_scroll_pixel_based_preserve_y = -1;
window_scroll_preserve_hpos = -1;
window_scroll_preserve_vpos = -1;
PDUMPER_IGNORE (sequence_number);
PDUMPER_RESET_LV (minibuf_window, Qnil);
PDUMPER_RESET_LV (selected_window, Qnil);
PDUMPER_RESET_LV (Vwindow_list, Qnil);
PDUMPER_RESET_LV (minibuf_selected_window, Qnil);
/* Hack: if mode_line_in_non_selected_windows is true (which it may
be, if we're restoring from a dump) the guts of
make_initial_frame will try to access selected_window, which is
invalid at this point, and lose. For the purposes of creating
the initial frame and window, this variable must be false. */
bool old_mode_line_in_non_selected_windows;
/* Snapshot dumped_with_pdumper to suppress compiler warning. */
bool saved_dumped_with_pdumper = dumped_with_pdumper_p ();
if (saved_dumped_with_pdumper)
{
old_mode_line_in_non_selected_windows
= mode_line_in_non_selected_windows;
mode_line_in_non_selected_windows = false;
}
struct frame *f = make_initial_frame ();
if (saved_dumped_with_pdumper)
mode_line_in_non_selected_windows =
old_mode_line_in_non_selected_windows;
XSETFRAME (selected_frame, f);
old_selected_frame = Vterminal_frame = selected_frame;
minibuf_window = f->minibuffer_window;
old_selected_window = selected_window = f->selected_window;
}
void
init_window (void)
{
Vwindow_list = Qnil;
}
void
syms_of_window (void)
{
DEFSYM (Qscroll_up, "scroll-up");
DEFSYM (Qscroll_down, "scroll-down");
DEFSYM (Qscroll_command, "scroll-command");
Fput (Qscroll_up, Qscroll_command, Qt);
Fput (Qscroll_down, Qscroll_command, Qt);
DEFSYM (Qwindow_configuration_change_hook, "window-configuration-change-hook");
DEFSYM (Qwindow_state_change_hook, "window-state-change-hook");
DEFSYM (Qwindow_state_change_functions, "window-state-change-functions");
DEFSYM (Qwindow_size_change_functions, "window-size-change-functions");
DEFSYM (Qwindow_buffer_change_functions, "window-buffer-change-functions");
DEFSYM (Qwindow_selection_change_functions, "window-selection-change-functions");
DEFSYM (Qwindowp, "windowp");
DEFSYM (Qwindow_configuration_p, "window-configuration-p");
DEFSYM (Qwindow_live_p, "window-live-p");
DEFSYM (Qwindow_valid_p, "window-valid-p");
DEFSYM (Qwindow_deletable_p, "window-deletable-p");
DEFSYM (Qdelete_window, "delete-window");
DEFSYM (Qwindow__resize_root_window, "window--resize-root-window");
DEFSYM (Qwindow__resize_root_window_vertically,
"window--resize-root-window-vertically");
DEFSYM (Qwindow__resize_mini_frame, "window--resize-mini-frame");
DEFSYM (Qwindow__pixel_to_total, "window--pixel-to-total");
DEFSYM (Qsafe, "safe");
DEFSYM (Qdisplay_buffer, "display-buffer");
DEFSYM (Qreplace_buffer_in_windows, "replace-buffer-in-windows");
DEFSYM (Qrecord_window_buffer, "record-window-buffer");
DEFSYM (Qget_mru_window, "get-mru-window");
DEFSYM (Qwindow_size, "window-size");
DEFSYM (Qtemp_buffer_show_hook, "temp-buffer-show-hook");
DEFSYM (Qabove, "above");
DEFSYM (Qclone_of, "clone-of");
DEFSYM (Qfloor, "floor");
DEFSYM (Qceiling, "ceiling");
DEFSYM (Qmark_for_redisplay, "mark-for-redisplay");
DEFSYM (Qmode_line_format, "mode-line-format");
DEFSYM (Qheader_line_format, "header-line-format");
DEFSYM (Qtab_line_format, "tab-line-format");
DEFSYM (Qno_other_window, "no-other-window");
DEFSYM (Qconfiguration, "configuration");
DEFSYM (Qdelete, "delete");
DEFSYM (Qdedicated, "dedicated");
DEFSYM (Qquit_restore, "quit-restore");
DEFSYM (Qquit_restore_prev, "quit-restore-prev");
DEFVAR_LISP ("temp-buffer-show-function", Vtemp_buffer_show_function,
doc: /* Non-nil means call as function to display a help buffer.
The function is called with one argument, the buffer to be displayed.
Used by `with-output-to-temp-buffer'.
If this function is used, then it must do the entire job of showing
the buffer; `temp-buffer-show-hook' is not run unless this function runs it. */);
Vtemp_buffer_show_function = Qnil;
DEFVAR_LISP ("minibuffer-scroll-window", Vminibuf_scroll_window,
doc: /* Non-nil means it is the window that C-M-v in minibuffer should scroll. */);
Vminibuf_scroll_window = Qnil;
DEFVAR_BOOL ("mode-line-in-non-selected-windows", mode_line_in_non_selected_windows,
doc: /* Non-nil means to use `mode-line-inactive' face in non-selected windows.
If the minibuffer is active, the `minibuffer-scroll-window' mode line
is displayed in the `mode-line' face. */);
mode_line_in_non_selected_windows = true;
DEFVAR_LISP ("other-window-scroll-buffer", Vother_window_scroll_buffer,
doc: /* If this is a live buffer, \\[scroll-other-window] should scroll its window. */);
Vother_window_scroll_buffer = Qnil;
DEFVAR_LISP ("other-window-scroll-default", Vother_window_scroll_default,
doc: /* Function that provides the window to scroll by \\[scroll-other-window].
The function `other-window-for-scrolling' first tries to use
`minibuffer-scroll-window' and `other-window-scroll-buffer'.
But when both are nil, then by default it uses a neighboring window.
This variable is intended to get another default instead of `next-window'. */);
Vother_window_scroll_default = Qnil;
DEFVAR_BOOL ("auto-window-vscroll", auto_window_vscroll_p,
doc: /* Non-nil means to automatically adjust `window-vscroll' to view tall lines. */);
auto_window_vscroll_p = true;
DEFVAR_INT ("next-screen-context-lines", next_screen_context_lines,
doc: /* Number of lines of continuity when scrolling by screenfuls. */);
next_screen_context_lines = 2;
DEFVAR_LISP ("scroll-preserve-screen-position",
Vscroll_preserve_screen_position,
doc: /* Controls if scroll commands move point to keep its screen position unchanged.
A value of nil means point does not keep its screen position except
at the scroll margin or window boundary respectively.
A value of t means point keeps its screen position if the scroll
command moved it vertically out of the window, e.g. when scrolling
by full screens. If point is within `next-screen-context-lines' lines
from the edges of the window, point will typically not keep its screen
position when doing commands like `scroll-up-command'/`scroll-down-command'
and the like.
Any other value means point always keeps its screen position.
Scroll commands should have the `scroll-command' property
on their symbols to be controlled by this variable. */);
Vscroll_preserve_screen_position = Qnil;
DEFVAR_LISP ("window-point-insertion-type", Vwindow_point_insertion_type,
doc: /* Insertion type of marker to use for `window-point'.
See `marker-insertion-type' for the meaning of the possible values. */);
Vwindow_point_insertion_type = Qnil;
DEFSYM (Qwindow_point_insertion_type, "window-point-insertion-type");
DEFVAR_LISP ("window-buffer-change-functions", Vwindow_buffer_change_functions,
doc: /* Functions called during redisplay when window buffers have changed.
The value should be a list of functions that take one argument.
Functions specified buffer-locally are called for each window showing
the corresponding buffer if and only if that window has been added or
changed its buffer since the last redisplay. In this case the window
is passed as argument.
Functions specified by the default value are called for each frame if
at least one window on that frame has been added, deleted or changed
its buffer since the last redisplay. In this case the frame is passed
as argument. */);
Vwindow_buffer_change_functions = Qnil;
DEFVAR_LISP ("window-size-change-functions", Vwindow_size_change_functions,
doc: /* Functions called during redisplay when window sizes have changed.
The value should be a list of functions that take one argument.
Functions specified buffer-locally are called for each window showing
the corresponding buffer if and only if that window has been added or
changed its buffer or its total or body size since the last redisplay.
In this case the window is passed as argument.
Functions specified by the default value are called for each frame if
at least one window on that frame has been added or changed its buffer
or its total or body size since the last redisplay. In this case the
frame is passed as argument.
For instance, to hide the title bar when the frame is maximized, you
can add `frame-hide-title-bar-when-maximized' to this variable. */);
Vwindow_size_change_functions = Qnil;
DEFVAR_LISP ("window-selection-change-functions", Vwindow_selection_change_functions,
doc: /* Functions called during redisplay when the selected window has changed.
The value should be a list of functions that take one argument.
Functions specified buffer-locally are called for each window showing
the corresponding buffer if and only if that window has been selected
or deselected since the last redisplay. In this case the window is
passed as argument.
Functions specified by the default value are called for each frame if
the frame's selected window has changed since the last redisplay. In
this case the frame is passed as argument. */);
Vwindow_selection_change_functions = Qnil;
DEFVAR_LISP ("window-state-change-functions", Vwindow_state_change_functions,
doc: /* Functions called during redisplay when the window state changed.
The value should be a list of functions that take one argument.
Functions specified buffer-locally are called for each window showing
the corresponding buffer if and only if that window has been added,
resized, changed its buffer or has been (de-)selected since the last
redisplay. In this case the window is passed as argument.
Functions specified by the default value are called for each frame if
at least one window on that frame has been added, deleted, changed its
buffer or its total or body size or the frame has been (de-)selected,
its selected window has changed or the window state change flag has
been set for this frame since the last redisplay. In this case the
frame is passed as argument. */);
Vwindow_state_change_functions = Qnil;
DEFVAR_LISP ("window-state-change-hook", Vwindow_state_change_hook,
doc: /* Functions called during redisplay when the window state changed.
The value should be a list of functions that take no argument.
This hook is called during redisplay when at least one window has been
added, deleted, (de-)selected, changed its buffer or its total or body
size or the window state change flag has been set for at least one
frame. This hook is called after all other window change functions
have been run and should be used only if a function should react to
changes that happened on at least two frames since last redisplay or
the function intends to change the window configuration. */);
Vwindow_state_change_hook = Qnil;
DEFVAR_LISP ("window-configuration-change-hook", Vwindow_configuration_change_hook,
doc: /* Functions called during redisplay when window configuration has changed.
The value should be a list of functions that take no argument.
Functions specified buffer-locally are called for each window showing
the corresponding buffer if at least one window on that frame has been
added, deleted or changed its buffer or its total or body size since
the last redisplay. Each call is performed with the window showing
the buffer temporarily selected.
Functions specified by the default value are called for each frame if
at least one window on that frame has been added, deleted or changed
its buffer or its total or body size since the last redisplay. Each
call is performed with the frame temporarily selected. */);
Vwindow_configuration_change_hook = Qnil;
DEFVAR_LISP ("window-restore-killed-buffer-windows",
window_restore_killed_buffer_windows,
doc: /* Control restoring windows whose buffer was killed.
This variable specifies how the functions `set-window-configuration' and
`window-state-put' shall handle a window whose buffer has been killed
since the corresponding configuration or state was recorded. Any such
window may be live -- in which case it shows some other buffer -- or
dead at the time one of these functions is called.
By default, `set-window-configuration' leaves the window alone if it is
live, while `window-state-put' deletes it. The following values can be
used to override the default behavior for dead windows in the case of
`set-window-configuration' and for dead and live windows in the case of
`window-state-put'.
- t means to restore the window and show some other buffer in it.
- `delete' means to try to delete the window.
- `dedicated' means to try to delete the window if and only if it is
dedicated to its buffer.
- nil, the default, which means that `set-window-configuration' will
try to delete the window if and only if it is dedicated to its
buffer while `window-state-put' will unconditionally try to delete
it.
- a function means to restore the window and show some other buffer in
it, like if the value were t, but also to add an entry for that
window to a list that will be later passed as argument to that
function.
If a window cannot be deleted (typically, because it is the last window
on its frame), show another buffer in it.
If the value is a function, it should take three arguments. The first
argument specifies the frame whose windows have been restored. The
third argument is the symbol `configuration' if the windows are
restored by `set-window-configuration' and the symbol `state' if the
windows are restored by `window-state-put'.
The second argument specifies a list of entries for all windows whose
previous buffers have been found dead at the time
`set-window-configuration' or `window-state-put' tried to restore them
(minibuffer windows are excluded). This means that the function
specified by this variable may also delete windows which were found to
be alive by `set-window-configuration'.
Each entry is a list of six values: the window whose buffer was found
dead, the dead buffer or its name, the positions of window-start and
window-point of the buffer in that window, the dedicated state of the
window as reported by `window-dedicated-p', and a boolean -- t if the
window was live when `set-window-configuration' tried to restore it,
and nil otherwise. */);
window_restore_killed_buffer_windows = Qnil;
DEFVAR_LISP ("recenter-redisplay", Vrecenter_redisplay,
doc: /* Non-nil means `recenter' redraws entire frame.
If this option is non-nil, then the `recenter' command with a nil
argument will redraw the entire frame; the special value `tty' causes
the frame to be redrawn only if it is a tty frame. */);
Vrecenter_redisplay = Qtty;
DEFVAR_LISP ("window-combination-resize", Vwindow_combination_resize,
doc: /* If t, resize window combinations proportionally.
If this variable is nil, splitting a window gets the entire screen space
for displaying the new window from the window to split. Deleting and
resizing a window preferably resizes one adjacent window only.
If this variable is t, splitting a window tries to get the space
proportionally from all windows in the same combination. This also
allows splitting a window that is otherwise too small or of fixed size.
Resizing and deleting a window proportionally resize all windows in the
same combination.
Other values are reserved for future use.
A specific split operation may ignore the value of this variable if it
is affected by a non-nil value of `window-combination-limit'. */);
Vwindow_combination_resize = Qnil;
DEFVAR_LISP ("window-combination-limit", Vwindow_combination_limit,
doc: /* If non-nil, splitting a window makes a new parent window.
The following values are recognized:
nil means splitting a window will create a new parent window only if the
window has no parent window or the window shall become part of a
combination orthogonal to the one it is part of.
`window-size' means that splitting a window for displaying a buffer
makes a new parent window provided `display-buffer' is supposed to
explicitly set the window's size due to the presence of a
`window-height' or `window-width' entry in the alist used by
`display-buffer'. Otherwise, this value is handled like nil.
`temp-buffer-resize' means that splitting a window for displaying a
temporary buffer via `with-temp-buffer-window' makes a new parent
window only if `temp-buffer-resize-mode' is enabled. Otherwise,
this value is handled like nil.
`temp-buffer' means that splitting a window for displaying a temporary
buffer via `with-temp-buffer-window' always makes a new parent
window. Otherwise, this value is handled like nil.
`display-buffer' means that splitting a window for displaying a buffer
always makes a new parent window. Since temporary buffers are
displayed by the function `display-buffer', this value is stronger
than `temp-buffer'. Splitting a window for other purpose makes a
new parent window only if needed.
t means that splitting a window always creates a new parent window. If
all splits behave this way, each frame's window tree is a binary
tree and every window but the frame's root window has exactly one
sibling.
The default value is `window-size'. Other values are reserved for
future use. */);
Vwindow_combination_limit = Qwindow_size;
DEFVAR_LISP ("window-persistent-parameters", Vwindow_persistent_parameters,
doc: /* Alist of persistent window parameters.
This alist specifies which window parameters shall get saved by
`current-window-configuration' and `window-state-get' and subsequently
restored to their previous values by `set-window-configuration' and
`window-state-put'.
The car of each entry of this alist is the symbol specifying the
parameter. The cdr is one of the following:
nil means the parameter is neither saved by `window-state-get' nor by
`current-window-configuration'.
t means the parameter is saved by `current-window-configuration' and,
provided its WRITABLE argument is nil, by `window-state-get'.
The symbol `writable' means the parameter is saved unconditionally by
both `current-window-configuration' and `window-state-get'. Do not use
this value for parameters without read syntax (like windows or frames).
Parameters not saved by `current-window-configuration' or
`window-state-get' are left alone by `set-window-configuration'
respectively are not installed by `window-state-put'. */);
Vwindow_persistent_parameters = list1 (Fcons (Qclone_of, Qt));
DEFVAR_BOOL ("window-resize-pixelwise", window_resize_pixelwise,
doc: /* Non-nil means resize windows pixelwise.
This currently affects the functions: `split-window', `maximize-window',
`minimize-window', `fit-window-to-buffer' and `fit-frame-to-buffer', and
all functions that symmetrically resize a parent window.
Note that when a frame's pixel size is not a multiple of the
frame's character size, at least one window may get resized
pixelwise even if this option is nil. */);
window_resize_pixelwise = false;
DEFVAR_BOOL ("fast-but-imprecise-scrolling",
fast_but_imprecise_scrolling,
doc: /* When non-nil, accelerate scrolling operations.
This comes into play when scrolling rapidly over previously
unfontified buffer regions. Only those portions of the buffer which
are actually going to be displayed get fontified.
Note that this optimization can cause the portion of the buffer
displayed after a scrolling operation to be somewhat inaccurate. */);
fast_but_imprecise_scrolling = false;
DEFVAR_LISP ("window-dead-windows-table", window_dead_windows_table,
doc: /* Hash table of dead windows.
Each entry in this table maps a window number to a window object.
Entries are added by `delete-window-internal' and are removed by the
garbage collector.
This table is maintained by code in window.c and is made visible in
Elisp for testing purposes only. */);
window_dead_windows_table
= CALLN (Fmake_hash_table, QCweakness, Qt);
defsubr (&Sselected_window);
defsubr (&Sold_selected_window);
defsubr (&Sminibuffer_window);
defsubr (&Swindow_minibuffer_p);
defsubr (&Swindowp);
defsubr (&Swindow_valid_p);
defsubr (&Swindow_live_p);
defsubr (&Swindow_frame);
defsubr (&Sframe_root_window);
defsubr (&Sframe_first_window);
defsubr (&Sframe_selected_window);
defsubr (&Sframe_old_selected_window);
defsubr (&Sset_frame_selected_window);
defsubr (&Spos_visible_in_window_p);
defsubr (&Swindow_line_height);
defsubr (&Swindow_buffer);
defsubr (&Swindow_old_buffer);
defsubr (&Swindow_parent);
defsubr (&Swindow_top_child);
defsubr (&Swindow_left_child);
defsubr (&Swindow_next_sibling);
defsubr (&Swindow_prev_sibling);
defsubr (&Swindow_combination_limit);
defsubr (&Sset_window_combination_limit);
defsubr (&Swindow_use_time);
defsubr (&Swindow_pixel_width);
defsubr (&Swindow_pixel_height);
defsubr (&Swindow_old_pixel_width);
defsubr (&Swindow_old_pixel_height);
defsubr (&Swindow_old_body_pixel_width);
defsubr (&Swindow_old_body_pixel_height);
defsubr (&Swindow_total_width);
defsubr (&Swindow_total_height);
defsubr (&Swindow_normal_size);
defsubr (&Swindow_new_pixel);
defsubr (&Swindow_new_total);
defsubr (&Swindow_new_normal);
defsubr (&Swindow_pixel_left);
defsubr (&Swindow_pixel_top);
defsubr (&Swindow_left_column);
defsubr (&Swindow_top_line);
defsubr (&Sset_window_new_pixel);
defsubr (&Sset_window_new_total);
defsubr (&Sset_window_new_normal);
defsubr (&Swindow_resize_apply);
defsubr (&Swindow_resize_apply_total);
defsubr (&Swindow_body_height);
defsubr (&Swindow_body_width);
defsubr (&Swindow_hscroll);
defsubr (&Sset_window_hscroll);
defsubr (&Swindow_mode_line_height);
defsubr (&Swindow_header_line_height);
defsubr (&Swindow_tab_line_height);
defsubr (&Swindow_right_divider_width);
defsubr (&Swindow_bottom_divider_width);
defsubr (&Swindow_scroll_bar_width);
defsubr (&Swindow_scroll_bar_height);
defsubr (&Scoordinates_in_window_p);
defsubr (&Swindow_at);
defsubr (&Swindow_point);
defsubr (&Swindow_old_point);
defsubr (&Swindow_start);
defsubr (&Swindow_end);
defsubr (&Sset_window_point);
defsubr (&Sset_window_start);
defsubr (&Swindow_dedicated_p);
defsubr (&Swindow_lines_pixel_dimensions);
defsubr (&Sset_window_dedicated_p);
defsubr (&Swindow_display_table);
defsubr (&Sset_window_display_table);
defsubr (&Snext_window);
defsubr (&Sprevious_window);
defsubr (&Sget_buffer_window);
defsubr (&Sdelete_other_windows_internal);
defsubr (&Sdelete_window_internal);
defsubr (&Sresize_mini_window_internal);
defsubr (&Sset_window_buffer);
defsubr (&Srun_window_configuration_change_hook);
defsubr (&Srun_window_scroll_functions);
defsubr (&Sselect_window);
defsubr (&Sforce_window_update);
defsubr (&Ssplit_window_internal);
defsubr (&Sscroll_up);
defsubr (&Sscroll_down);
defsubr (&Sscroll_left);
defsubr (&Sscroll_right);
defsubr (&Sother_window_for_scrolling);
defsubr (&Sminibuffer_selected_window);
defsubr (&Srecenter);
defsubr (&Swindow_text_width);
defsubr (&Swindow_text_height);
defsubr (&Smove_to_window_line);
defsubr (&Swindow_configuration_p);
defsubr (&Swindow_configuration_frame);
defsubr (&Sset_window_configuration);
defsubr (&Scurrent_window_configuration);
defsubr (&Sset_window_margins);
defsubr (&Swindow_margins);
defsubr (&Sset_window_fringes);
defsubr (&Swindow_fringes);
defsubr (&Sset_window_scroll_bars);
defsubr (&Swindow_scroll_bars);
defsubr (&Swindow_vscroll);
defsubr (&Sset_window_vscroll);
defsubr (&Swindow_configuration_equal_p);
defsubr (&Swindow_bump_use_time);
defsubr (&Swindow_list);
defsubr (&Swindow_list_1);
defsubr (&Swindow_prev_buffers);
defsubr (&Sset_window_prev_buffers);
defsubr (&Swindow_next_buffers);
defsubr (&Sset_window_next_buffers);
defsubr (&Swindow_parameters);
defsubr (&Swindow_parameter);
defsubr (&Sset_window_parameter);
defsubr (&Swindow_discard_buffer);
defsubr (&Swindow_cursor_type);
defsubr (&Sset_window_cursor_type);
}
|