unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
blob 4d15cffb9f69664e534e4feae322f728bbb78833 88610 bytes (raw)
name: src/w32font.c 	 # note: path name is non-authoritative(*)

   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
 
/* Font backend for the Microsoft Windows API.
   Copyright (C) 2007-2016 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */

#include <config.h>
#include <windows.h>
#include <stdio.h>
#include <math.h>
#include <ctype.h>
#include <commdlg.h>

#include "lisp.h"
#include "w32term.h"
#include "frame.h"
#include "coding.h"	/* for ENCODE_SYSTEM, DECODE_SYSTEM */
#include "w32font.h"
#ifdef WINDOWSNT
#include "w32.h"
#endif

/* Cleartype available on Windows XP, cleartype_natural from XP SP1.
   The latter does not try to fit cleartype smoothed fonts into the
   same bounding box as the non-antialiased version of the font.
 */
#ifndef CLEARTYPE_QUALITY
#define CLEARTYPE_QUALITY 5
#endif
#ifndef CLEARTYPE_NATURAL_QUALITY
#define CLEARTYPE_NATURAL_QUALITY 6
#endif

/* VIETNAMESE_CHARSET and JOHAB_CHARSET are not defined in some versions
   of MSVC headers.  */
#ifndef VIETNAMESE_CHARSET
#define VIETNAMESE_CHARSET 163
#endif
#ifndef JOHAB_CHARSET
#define JOHAB_CHARSET 130
#endif

static void fill_in_logfont (struct frame *, LOGFONT *, Lisp_Object);

static BYTE w32_antialias_type (Lisp_Object);
static Lisp_Object lispy_antialias_type (BYTE);

static Lisp_Object font_supported_scripts (FONTSIGNATURE *);
static int w32font_full_name (LOGFONT *, Lisp_Object, int, char *, int);
static void compute_metrics (HDC, struct w32font_info *, unsigned int,
                             struct w32_metric_cache *);

static Lisp_Object w32_registry (LONG, DWORD);

/* EnumFontFamiliesEx callbacks.  */
static int CALLBACK ALIGN_STACK add_font_entity_to_list (ENUMLOGFONTEX *,
							 NEWTEXTMETRICEX *,
							 DWORD, LPARAM);
static int CALLBACK ALIGN_STACK add_one_font_entity_to_list (ENUMLOGFONTEX *,
							     NEWTEXTMETRICEX *,
							     DWORD, LPARAM);
static int CALLBACK ALIGN_STACK add_font_name_to_list (ENUMLOGFONTEX *,
						       NEWTEXTMETRICEX *,
						       DWORD, LPARAM);

/* struct passed in as LPARAM arg to EnumFontFamiliesEx, for keeping track
   of what we really want.  */
struct font_callback_data
{
  /* The logfont we are matching against. EnumFontFamiliesEx only matches
     face name and charset, so we need to manually match everything else
     in the callback function.  */
  LOGFONT pattern;
  /* The original font spec or entity.  */
  Lisp_Object orig_font_spec;
  /* The frame the font is being loaded on.  */
  Lisp_Object frame;
  /* The list to add matches to.  */
  Lisp_Object list;
  /* Whether to match only opentype fonts.  */
  bool opentype_only;
};

/* Handles the problem that EnumFontFamiliesEx will not return all
   style variations if the font name is not specified.  */
static void list_all_matching_fonts (struct font_callback_data *);

#ifdef WINDOWSNT

static BOOL g_b_init_get_outline_metrics_w;
static BOOL g_b_init_get_text_metrics_w;
static BOOL g_b_init_get_glyph_outline_w;
static BOOL g_b_init_get_char_width_32_w;

typedef UINT (WINAPI * GetOutlineTextMetricsW_Proc) (
   HDC hdc,
   UINT cbData,
   LPOUTLINETEXTMETRICW lpotmw);
typedef BOOL (WINAPI * GetTextMetricsW_Proc) (
   HDC hdc,
   LPTEXTMETRICW lptmw);
typedef DWORD (WINAPI * GetGlyphOutlineW_Proc) (
   HDC hdc,
   UINT uChar,
   UINT uFormat,
   LPGLYPHMETRICS lpgm,
   DWORD cbBuffer,
   LPVOID lpvBuffer,
   const MAT2 *lpmat2);
typedef BOOL (WINAPI * GetCharWidth32W_Proc) (
   HDC hdc,
   UINT uFirstChar,
   UINT uLastChar,
   LPINT lpBuffer);

/* Several "wide" functions we use to support the font backends are
   unavailable on Windows 9X, unless UNICOWS.DLL is installed (their
   versions in the default libraries are non-functional stubs).  On NT
   and later systems, these functions are in GDI32.DLL.  The following
   helper function attempts to load UNICOWS.DLL on Windows 9X, and
   refuses to let Emacs start up if that library is not found.  On NT
   and later versions, it simply loads GDI32.DLL, which should always
   be available.  */
static HMODULE
w32_load_unicows_or_gdi32 (void)
{
  return maybe_load_unicows_dll ();
}

/* The following 3 functions call the problematic "wide" APIs via
   function pointers, to avoid linking against the non-standard
   libunicows on W9X.  */
static UINT WINAPI
get_outline_metrics_w(HDC hdc, UINT cbData, LPOUTLINETEXTMETRICW lpotmw)
{
  static GetOutlineTextMetricsW_Proc s_pfn_Get_Outline_Text_MetricsW = NULL;
  HMODULE hm_unicows = NULL;
  if (g_b_init_get_outline_metrics_w == 0)
    {
      g_b_init_get_outline_metrics_w = 1;
      hm_unicows = w32_load_unicows_or_gdi32 ();
      if (hm_unicows)
	s_pfn_Get_Outline_Text_MetricsW = (GetOutlineTextMetricsW_Proc)
	  GetProcAddress (hm_unicows, "GetOutlineTextMetricsW");
    }
  eassert (s_pfn_Get_Outline_Text_MetricsW != NULL);
  return s_pfn_Get_Outline_Text_MetricsW (hdc, cbData, lpotmw);
}

static BOOL WINAPI
get_text_metrics_w(HDC hdc, LPTEXTMETRICW lptmw)
{
  static GetTextMetricsW_Proc s_pfn_Get_Text_MetricsW = NULL;
  HMODULE hm_unicows = NULL;
  if (g_b_init_get_text_metrics_w == 0)
    {
      g_b_init_get_text_metrics_w = 1;
      hm_unicows = w32_load_unicows_or_gdi32 ();
      if (hm_unicows)
	s_pfn_Get_Text_MetricsW = (GetTextMetricsW_Proc)
	  GetProcAddress (hm_unicows, "GetTextMetricsW");
    }
  eassert (s_pfn_Get_Text_MetricsW != NULL);
  return s_pfn_Get_Text_MetricsW (hdc, lptmw);
}

static DWORD WINAPI
get_glyph_outline_w (HDC hdc, UINT uChar, UINT uFormat, LPGLYPHMETRICS lpgm,
		     DWORD cbBuffer, LPVOID lpvBuffer, const MAT2 *lpmat2)
{
  static GetGlyphOutlineW_Proc s_pfn_Get_Glyph_OutlineW = NULL;
  HMODULE hm_unicows = NULL;
  if (g_b_init_get_glyph_outline_w == 0)
    {
      g_b_init_get_glyph_outline_w = 1;
      hm_unicows = w32_load_unicows_or_gdi32 ();
      if (hm_unicows)
	s_pfn_Get_Glyph_OutlineW = (GetGlyphOutlineW_Proc)
	  GetProcAddress (hm_unicows, "GetGlyphOutlineW");
    }
  eassert (s_pfn_Get_Glyph_OutlineW != NULL);
  return s_pfn_Get_Glyph_OutlineW (hdc, uChar, uFormat, lpgm, cbBuffer,
				   lpvBuffer, lpmat2);
}

static DWORD WINAPI
get_char_width_32_w (HDC hdc, UINT uFirstChar, UINT uLastChar, LPINT lpBuffer)
{
  static GetCharWidth32W_Proc s_pfn_Get_Char_Width_32W = NULL;
  HMODULE hm_unicows = NULL;
  if (g_b_init_get_char_width_32_w == 0)
    {
      g_b_init_get_char_width_32_w = 1;
      hm_unicows = w32_load_unicows_or_gdi32 ();
      if (hm_unicows)
	s_pfn_Get_Char_Width_32W = (GetCharWidth32W_Proc)
	  GetProcAddress (hm_unicows, "GetCharWidth32W");
    }
  eassert (s_pfn_Get_Char_Width_32W != NULL);
  return s_pfn_Get_Char_Width_32W (hdc, uFirstChar, uLastChar, lpBuffer);
}

#else  /* Cygwin */

/* Cygwin doesn't support Windows 9X, and links against GDI32.DLL, so
   it can just call these functions directly.  */
#define get_outline_metrics_w(h,d,o)   GetOutlineTextMetricsW(h,d,o)
#define get_text_metrics_w(h,t)        GetTextMetricsW(h,t)
#define get_glyph_outline_w(h,uc,f,gm,b,v,m) \
                                       GetGlyphOutlineW(h,uc,f,gm,b,v,m)
#define get_char_width_32_w(h,fc,lc,b) GetCharWidth32W(h,fc,lc,b)

#endif	/* Cygwin */

static int
memq_no_quit (Lisp_Object elt, Lisp_Object list)
{
  while (CONSP (list) && ! EQ (XCAR (list), elt))
    list = XCDR (list);
  return (CONSP (list));
}

Lisp_Object
intern_font_name (char * string)
{
  Lisp_Object str = DECODE_SYSTEM (build_string (string));
  ptrdiff_t len = SCHARS (str);
  Lisp_Object obarray = check_obarray (Vobarray);
  Lisp_Object tem = oblookup (obarray, SSDATA (str), len, len);
  /* This code is similar to intern function from lread.c.  */
  return SYMBOLP (tem) ? tem : intern_driver (str, obarray, tem);
}

/* w32 implementation of get_cache for font backend.
   Return a cache of font-entities on FRAME.  The cache must be a
   cons whose cdr part is the actual cache area.  */
Lisp_Object
w32font_get_cache (struct frame *f)
{
  struct w32_display_info *dpyinfo = FRAME_DISPLAY_INFO (f);

  return (dpyinfo->name_list_element);
}

/* w32 implementation of list for font backend.
   List fonts exactly matching with FONT_SPEC on FRAME.  The value
   is a vector of font-entities.  This is the sole API that
   allocates font-entities.  */
static Lisp_Object
w32font_list (struct frame *f, Lisp_Object font_spec)
{
  Lisp_Object fonts = w32font_list_internal (f, font_spec, 0);
  FONT_ADD_LOG ("w32font-list", font_spec, fonts);
  return fonts;
}

/* w32 implementation of match for font backend.
   Return a font entity most closely matching with FONT_SPEC on
   FRAME.  The closeness is determined by the font backend, thus
   `face-font-selection-order' is ignored here.  */
static Lisp_Object
w32font_match (struct frame *f, Lisp_Object font_spec)
{
  Lisp_Object entity = w32font_match_internal (f, font_spec, 0);
  FONT_ADD_LOG ("w32font-match", font_spec, entity);
  return entity;
}

/* w32 implementation of list_family for font backend.
   List available families.  The value is a list of family names
   (symbols).  */
static Lisp_Object
w32font_list_family (struct frame *f)
{
  Lisp_Object list = Qnil;
  LOGFONT font_match_pattern;
  HDC dc;

  memset (&font_match_pattern, 0, sizeof (font_match_pattern));
  font_match_pattern.lfCharSet = DEFAULT_CHARSET;

  dc = get_frame_dc (f);

  EnumFontFamiliesEx (dc, &font_match_pattern,
                      (FONTENUMPROC) add_font_name_to_list,
                      (LPARAM) &list, 0);
  release_frame_dc (f, dc);

  return list;
}

/* w32 implementation of open for font backend.
   Open a font specified by FONT_ENTITY on frame F.
   If the font is scalable, open it with PIXEL_SIZE.  */
static Lisp_Object
w32font_open (struct frame *f, Lisp_Object font_entity, int pixel_size)
{
  Lisp_Object font_object
    = font_make_object (VECSIZE (struct w32font_info),
                        font_entity, pixel_size);
  struct w32font_info *w32_font
    = (struct w32font_info *) XFONT_OBJECT (font_object);

  ASET (font_object, FONT_TYPE_INDEX, Qgdi);

  if (!w32font_open_internal (f, font_entity, pixel_size, font_object))
    {
      return Qnil;
    }

  /* GDI backend does not use glyph indices.  */
  w32_font->glyph_idx = 0;

  return font_object;
}

/* w32 implementation of close for font_backend.  */
void
w32font_close (struct font *font)
{
  struct w32font_info *w32_font = (struct w32font_info *) font;

  if (w32_font->hfont)
    {
      /* Delete the GDI font object.  */
      DeleteObject (w32_font->hfont);
      w32_font->hfont = NULL;

      /* Free all the cached metrics.  */
      if (w32_font->cached_metrics)
	{
	  int i;

	  for (i = 0; i < w32_font->n_cache_blocks; i++)
	      xfree (w32_font->cached_metrics[i]);
	  xfree (w32_font->cached_metrics);
	  w32_font->cached_metrics = NULL;
	}
    }
}

/* w32 implementation of has_char for font backend.
   Optional.
   If FONT_ENTITY has a glyph for character C (Unicode code point),
   return 1.  If not, return 0.  If a font must be opened to check
   it, return -1.  */
int
w32font_has_char (Lisp_Object entity, int c)
{
  /* We can't be certain about which characters a font will support until
     we open it.  Checking the scripts that the font supports turns out
     to not be reliable.  */
  return -1;

#if 0
  Lisp_Object supported_scripts, extra, script;
  DWORD mask;

  extra = AREF (entity, FONT_EXTRA_INDEX);
  if (!CONSP (extra))
    return -1;

  supported_scripts = assq_no_quit (QCscript, extra);
  /* If font doesn't claim to support any scripts, then we can't be certain
     until we open it.  */
  if (!CONSP (supported_scripts))
    return -1;

  supported_scripts = XCDR (supported_scripts);

  script = CHAR_TABLE_REF (Vchar_script_table, c);

  /* If we don't know what script the character is from, then we can't be
     certain until we open it.  Also if the font claims support for the script
     the character is from, it may only have partial coverage, so we still
     can't be certain until we open the font.  */
  if (NILP (script) || memq_no_quit (script, supported_scripts))
    return -1;

  /* Font reports what scripts it supports, and none of them are the script
     the character is from. But we still can't be certain, as some fonts
     will contain some/most/all of the characters in that script without
     claiming support for it.  */
  return -1;
#endif
}

/* w32 implementation of encode_char for font backend.
   Return a glyph code of FONT for character C (Unicode code point).
   If FONT doesn't have such a glyph, return FONT_INVALID_CODE.

   For speed, the gdi backend uses Unicode (Emacs calls encode_char
   far too often for it to be efficient). But we still need to detect
   which characters are not supported by the font.
  */
static unsigned
w32font_encode_char (struct font *font, int c)
{
  struct w32font_info * w32_font = (struct w32font_info *)font;

  if (c < w32_font->metrics.tmFirstChar
      || c > w32_font->metrics.tmLastChar)
    return FONT_INVALID_CODE;
  else
    return c;
}

/* w32 implementation of text_extents for font backend.
   Perform the size computation of glyphs of FONT and fillin members
   of METRICS.  The glyphs are specified by their glyph codes in
   CODE (length NGLYPHS).  Apparently metrics can be NULL, in this
   case just return the overall width.  */
void
w32font_text_extents (struct font *font, unsigned *code,
		      int nglyphs, struct font_metrics *metrics)
{
  int i;
  HFONT old_font = NULL;
  HDC dc = NULL;
  struct frame * f;
  int total_width = 0;
  WORD *wcode;
  SIZE size;
  bool first;

  struct w32font_info *w32_font = (struct w32font_info *) font;

  memset (metrics, 0, sizeof (struct font_metrics));

  for (i = 0, first = true; i < nglyphs; i++)
    {
      struct w32_metric_cache *char_metric;
      int block = *(code + i) / CACHE_BLOCKSIZE;
      int pos_in_block = *(code + i) % CACHE_BLOCKSIZE;

      if (block >= w32_font->n_cache_blocks)
	{
	  if (!w32_font->cached_metrics)
	    w32_font->cached_metrics
	      = xmalloc ((block + 1)
			 * sizeof (struct w32_metric_cache *));
	  else
	    w32_font->cached_metrics
	      = xrealloc (w32_font->cached_metrics,
			  (block + 1)
			  * sizeof (struct w32_metric_cache *));
	  memset (w32_font->cached_metrics + w32_font->n_cache_blocks, 0,
		  ((block + 1 - w32_font->n_cache_blocks)
		   * sizeof (struct w32_metric_cache *)));
	  w32_font->n_cache_blocks = block + 1;
	}

      if (!w32_font->cached_metrics[block])
	{
	  w32_font->cached_metrics[block]
	    = xzalloc (CACHE_BLOCKSIZE * sizeof (struct w32_metric_cache));
	}

      char_metric = w32_font->cached_metrics[block] + pos_in_block;

      if (char_metric->status == W32METRIC_NO_ATTEMPT)
	{
	  if (dc == NULL)
	    {
	      /* TODO: Frames can come and go, and their fonts
		 outlive them. So we can't cache the frame in the
		 font structure.  Use selected_frame until the API
		 is updated to pass in a frame.  */
	      f = XFRAME (selected_frame);

	      dc = get_frame_dc (f);
	      old_font = SelectObject (dc, w32_font->hfont);
	    }
	  compute_metrics (dc, w32_font, *(code + i), char_metric);
	}

      if (char_metric->status == W32METRIC_SUCCESS)
	{
	  if (first)
	    {
	      metrics->lbearing = char_metric->lbearing;
	      metrics->rbearing = char_metric->rbearing;
	      metrics->width    = 0;
	      metrics->ascent   = char_metric->ascent;
	      metrics->descent  = char_metric->descent;
	      first = false;
	    }
	  if (metrics->lbearing > char_metric->lbearing)
	    metrics->lbearing = char_metric->lbearing;
	  if (metrics->rbearing < char_metric->rbearing)
	    metrics->rbearing = char_metric->rbearing;
	  metrics->width += char_metric->width;
	  if (metrics->ascent < char_metric->ascent)
	    metrics->ascent = char_metric->ascent;
	  if (metrics->descent < char_metric->descent)
	    metrics->descent = char_metric->descent;
	}
      else
	/* If we couldn't get metrics for a char,
	   use alternative method.  */
	break;
    }
  /* If we got through everything, return.  */
  if (i == nglyphs)
    {
      if (dc != NULL)
	{
	  /* Restore state and release DC.  */
	  SelectObject (dc, old_font);
	  release_frame_dc (f, dc);
	}
      return;
    }

  /* For non-truetype fonts, GetGlyphOutlineW is not supported, so
     fallback on other methods that will at least give some of the metric
     information.  */

  /* Make array big enough to hold surrogates.  */
  wcode = alloca (nglyphs * sizeof (WORD) * 2);
  for (i = 0; i < nglyphs; i++)
    {
      if (code[i] < 0x10000)
        wcode[i] = code[i];
      else
        {
          DWORD surrogate = code[i] - 0x10000;

          /* High surrogate: U+D800 - U+DBFF.  */
          wcode[i++] = 0xD800 + ((surrogate >> 10) & 0x03FF);
          /* Low surrogate: U+DC00 - U+DFFF.  */
          wcode[i] = 0xDC00 + (surrogate & 0x03FF);
          /* An extra glyph. wcode is already double the size of code to
             cope with this.  */
          nglyphs++;
        }
    }

  if (dc == NULL)
    {
      /* TODO: Frames can come and go, and their fonts outlive
	 them. So we can't cache the frame in the font structure.  Use
	 selected_frame until the API is updated to pass in a
	 frame.  */
      f = XFRAME (selected_frame);

      dc = get_frame_dc (f);
      old_font = SelectObject (dc, w32_font->hfont);
    }

  if (GetTextExtentPoint32W (dc, wcode, nglyphs, &size))
    {
      total_width = size.cx;
    }

  /* On 95/98/ME, only some Unicode functions are available, so fallback
     on doing a dummy draw to find the total width.  */
  if (!total_width)
    {
      RECT rect;
      rect.top = 0; rect.bottom = font->height; rect.left = 0; rect.right = 1;
      DrawTextW (dc, wcode, nglyphs, &rect,
                 DT_CALCRECT | DT_NOPREFIX | DT_SINGLELINE);
      total_width = rect.right;
    }

  /* Give our best estimate of the metrics, based on what we know.  */
  metrics->width = total_width - w32_font->metrics.tmOverhang;
  metrics->lbearing = 0;
  metrics->rbearing = total_width;
  metrics->ascent = font->ascent;
  metrics->descent = font->descent;

  /* Restore state and release DC.  */
  SelectObject (dc, old_font);
  release_frame_dc (f, dc);
}

/* w32 implementation of draw for font backend.
   Optional.
   Draw glyphs between FROM and TO of S->char2b at (X Y) pixel
   position of frame F with S->FACE and S->GC.  If WITH_BACKGROUND,
   fill the background in advance.  It is assured that WITH_BACKGROUND
   is false when (FROM > 0 || TO < S->nchars).

   TODO: Currently this assumes that the colors and fonts are already
   set in the DC. This seems to be true now, but maybe only due to
   the old font code setting it up. It may be safer to resolve faces
   and fonts in here and set them explicitly
*/

int
w32font_draw (struct glyph_string *s, int from, int to,
	      int x, int y, bool with_background)
{
  UINT options;
  HRGN orig_clip = NULL;
  int len = to - from;
  struct w32font_info *w32font = (struct w32font_info *) s->font;

  options = w32font->glyph_idx;

  if (s->num_clips > 0)
    {
      HRGN new_clip = CreateRectRgnIndirect (s->clip);

      /* Save clip region for later restoration.  */
      orig_clip = CreateRectRgn (0, 0, 0, 0);
      if (!GetClipRgn (s->hdc, orig_clip))
	{
	  DeleteObject (orig_clip);
	  orig_clip = NULL;
	}

      if (s->num_clips > 1)
        {
          HRGN clip2 = CreateRectRgnIndirect (s->clip + 1);

          CombineRgn (new_clip, new_clip, clip2, RGN_OR);
          DeleteObject (clip2);
        }

      SelectClipRgn (s->hdc, new_clip);
      DeleteObject (new_clip);
    }

  /* Using OPAQUE background mode can clear more background than expected
     when Cleartype is used.  Draw the background manually to avoid this.  */
  SetBkMode (s->hdc, TRANSPARENT);
  if (with_background)
    {
      HBRUSH brush;
      RECT rect;
      struct font *font = s->font;
      int ascent = font->ascent, descent = font->descent;

      /* Font's global ascent and descent values might be
	 preposterously large for some fonts.  We fix here the case
	 when those fonts are used for display of glyphless
	 characters, because drawing background with font dimensions
	 in those cases makes the display illegible.  There's only one
	 more call to the draw method with with_background set to
	 true, and that's in x_draw_glyph_string_foreground, when
	 drawing the cursor, where we have no such heuristics
	 available.  FIXME.  */
      if (s->first_glyph->type == GLYPHLESS_GLYPH
	  && (s->first_glyph->u.glyphless.method == GLYPHLESS_DISPLAY_HEX_CODE
	      || s->first_glyph->u.glyphless.method == GLYPHLESS_DISPLAY_ACRONYM))
	{
	  ascent =
	    s->first_glyph->slice.glyphless.lower_yoff
	    - s->first_glyph->slice.glyphless.upper_yoff;
	  descent = 0;
	}
      brush = CreateSolidBrush (s->gc->background);
      rect.left = x;
      rect.top = y - ascent;
      rect.right = x + s->width;
      rect.bottom = y + descent;
      FillRect (s->hdc, &rect, brush);
      DeleteObject (brush);
    }

  if (s->padding_p)
    {
      int i;

      for (i = 0; i < len; i++)
	ExtTextOutW (s->hdc, x + i, y, options, NULL,
		     s->char2b + from + i, 1, NULL);
    }
  else
    ExtTextOutW (s->hdc, x, y, options, NULL, s->char2b + from, len, NULL);

  /* Restore clip region.  */
  if (s->num_clips > 0)
    SelectClipRgn (s->hdc, orig_clip);

  if (orig_clip)
    DeleteObject (orig_clip);

  return len;
}

/* w32 implementation of free_entity for font backend.
   Optional (if FONT_EXTRA_INDEX is not Lisp_Save_Value).
   Free FONT_EXTRA_INDEX field of FONT_ENTITY.
static void
w32font_free_entity (Lisp_Object entity);
  */

/* w32 implementation of prepare_face for font backend.
   Optional (if FACE->extra is not used).
   Prepare FACE for displaying characters by FONT on frame F by
   storing some data in FACE->extra.  If successful, return 0.
   Otherwise, return -1.
static int
w32font_prepare_face (struct frame *f, struct face *face);
  */
/* w32 implementation of done_face for font backend.
   Optional.
   Done FACE for displaying characters by FACE->font on frame F.
static void
w32font_done_face (struct frame *f, struct face *face);  */

/* w32 implementation of get_bitmap for font backend.
   Optional.
   Store bitmap data for glyph-code CODE of FONT in BITMAP.  It is
   intended that this method is called from the other font-driver
   for actual drawing.
static int
w32font_get_bitmap (struct font *font, unsigned code,
                    struct font_bitmap *bitmap, int bits_per_pixel);
  */
/* w32 implementation of free_bitmap for font backend.
   Optional.
   Free bitmap data in BITMAP.
static void
w32font_free_bitmap (struct font *font, struct font_bitmap *bitmap);
  */
/* w32 implementation of anchor_point for font backend.
   Optional.
   Get coordinates of the INDEXth anchor point of the glyph whose
   code is CODE.  Store the coordinates in *X and *Y.  Return 0 if
   the operations was successful.  Otherwise return -1.
static int
w32font_anchor_point (struct font *font, unsigned code,
                                 int index, int *x, int *y);
  */
/* w32 implementation of otf_capability for font backend.
   Optional.
   Return a list describing which scripts/languages FONT
   supports by which GSUB/GPOS features of OpenType tables.
static Lisp_Object
w32font_otf_capability (struct font *font);
  */
/* w32 implementation of otf_drive for font backend.
   Optional.
   Apply FONT's OTF-FEATURES to the glyph string.

   FEATURES specifies which OTF features to apply in this format:
      (SCRIPT LANGSYS GSUB-FEATURE GPOS-FEATURE)
   See the documentation of `font-drive-otf' for the detail.

   This method applies the specified features to the codes in the
   elements of GSTRING-IN (between FROMth and TOth).  The output
   codes are stored in GSTRING-OUT at the IDXth element and the
   following elements.

   Return the number of output codes.  If none of the features are
   applicable to the input data, return 0.  If GSTRING-OUT is too
   short, return -1.
static int
w32font_otf_drive (struct font *font, Lisp_Object features,
                   Lisp_Object gstring_in, int from, int to,
                   Lisp_Object gstring_out, int idx,
                   bool alternate_subst);
  */

/* Internal implementation of w32font_list.
   Additional parameter opentype_only restricts the returned fonts to
   opentype fonts, which can be used with the Uniscribe backend.  */
Lisp_Object
w32font_list_internal (struct frame *f, Lisp_Object font_spec,
		       bool opentype_only)
{
  struct font_callback_data match_data;
  HDC dc;

  match_data.orig_font_spec = font_spec;
  match_data.list = Qnil;
  XSETFRAME (match_data.frame, f);

  memset (&match_data.pattern, 0, sizeof (LOGFONT));
  fill_in_logfont (f, &match_data.pattern, font_spec);

  /* If the charset is unrecognized, then we won't find a font, so don't
     waste time looking for one.  */
  if (match_data.pattern.lfCharSet == DEFAULT_CHARSET)
    {
      Lisp_Object spec_charset = AREF (font_spec, FONT_REGISTRY_INDEX);
      if (!NILP (spec_charset)
	  && !EQ (spec_charset, Qiso10646_1)
	  && !EQ (spec_charset, Qunicode_bmp)
	  && !EQ (spec_charset, Qunicode_sip)
	  && !EQ (spec_charset, Qunknown)
	  && !EQ (spec_charset, Qascii_0))
	return Qnil;
    }

  match_data.opentype_only = opentype_only;
  if (opentype_only)
    match_data.pattern.lfOutPrecision = OUT_OUTLINE_PRECIS;

  if (match_data.pattern.lfFaceName[0] == '\0')
    {
      /* EnumFontFamiliesEx does not take other fields into account if
         font name is blank, so need to use two passes.  */
      list_all_matching_fonts (&match_data);
    }
  else
    {
      dc = get_frame_dc (f);

      EnumFontFamiliesEx (dc, &match_data.pattern,
                          (FONTENUMPROC) add_font_entity_to_list,
                          (LPARAM) &match_data, 0);
      release_frame_dc (f, dc);
    }

  return match_data.list;
}

/* Internal implementation of w32font_match.
   Additional parameter opentype_only restricts the returned fonts to
   opentype fonts, which can be used with the Uniscribe backend.  */
Lisp_Object
w32font_match_internal (struct frame *f, Lisp_Object font_spec,
			bool opentype_only)
{
  struct font_callback_data match_data;
  HDC dc;

  match_data.orig_font_spec = font_spec;
  XSETFRAME (match_data.frame, f);
  match_data.list = Qnil;

  memset (&match_data.pattern, 0, sizeof (LOGFONT));
  fill_in_logfont (f, &match_data.pattern, font_spec);

  match_data.opentype_only = opentype_only;
  if (opentype_only)
    match_data.pattern.lfOutPrecision = OUT_OUTLINE_PRECIS;

  dc = get_frame_dc (f);

  EnumFontFamiliesEx (dc, &match_data.pattern,
                      (FONTENUMPROC) add_one_font_entity_to_list,
                      (LPARAM) &match_data, 0);
  release_frame_dc (f, dc);

  return NILP (match_data.list) ? Qnil : XCAR (match_data.list);
}

int
w32font_open_internal (struct frame *f, Lisp_Object font_entity,
		       int pixel_size, Lisp_Object font_object)
{
  int len, size;
  LOGFONT logfont;
  HDC dc;
  HFONT hfont, old_font;
  Lisp_Object val;
  struct w32font_info *w32_font;
  struct font * font;
  OUTLINETEXTMETRICW* metrics = NULL;

  w32_font = (struct w32font_info *) XFONT_OBJECT (font_object);
  font = (struct font *) w32_font;

  if (!font)
    return 0;

  memset (&logfont, 0, sizeof (logfont));
  fill_in_logfont (f, &logfont, font_entity);

  /* Prefer truetype fonts, to avoid known problems with type1 fonts, and
     limitations in bitmap fonts.  */
  val = AREF (font_entity, FONT_FOUNDRY_INDEX);
  if (!EQ (val, Qraster))
    logfont.lfOutPrecision = OUT_TT_PRECIS;

  size = XINT (AREF (font_entity, FONT_SIZE_INDEX));
  if (!size)
    size = pixel_size;

  logfont.lfHeight = -size;
  hfont = CreateFontIndirect (&logfont);

  if (hfont == NULL)
    return 0;

  /* Get the metrics for this font.  */
  dc = get_frame_dc (f);
  old_font = SelectObject (dc, hfont);

  /* Try getting the outline metrics (only works for truetype fonts).  */
  len = get_outline_metrics_w (dc, 0, NULL);
  if (len)
    {
      metrics = (OUTLINETEXTMETRICW *) alloca (len);
      if (get_outline_metrics_w (dc, len, metrics))
        memcpy (&w32_font->metrics, &metrics->otmTextMetrics,
		sizeof (TEXTMETRICW));
      else
        metrics = NULL;
    }

  if (!metrics)
    get_text_metrics_w (dc, &w32_font->metrics);

  w32_font->cached_metrics = NULL;
  w32_font->n_cache_blocks = 0;

  SelectObject (dc, old_font);
  release_frame_dc (f, dc);

  w32_font->hfont = hfont;

  {
    char *name;

    /* We don't know how much space we need for the full name, so start with
       96 bytes and go up in steps of 32.  */
    len = 96;
    name = alloca (len);
    while (name && w32font_full_name (&logfont, font_entity, pixel_size,
                                      name, len) < 0)
      {
        len += 32;
        name = alloca (len);
      }
    if (name)
      font->props[FONT_FULLNAME_INDEX]
        = DECODE_SYSTEM (build_string (name));
    else
      font->props[FONT_FULLNAME_INDEX]
	= DECODE_SYSTEM (build_string (logfont.lfFaceName));
  }

  font->max_width = w32_font->metrics.tmMaxCharWidth;
  /* Parts of Emacs display assume that height = ascent + descent...
     so height is defined later, after ascent and descent.
  font->height = w32_font->metrics.tmHeight
    + w32_font->metrics.tmExternalLeading;
  */

  font->space_width = font->average_width = w32_font->metrics.tmAveCharWidth;

  font->vertical_centering = 0;
  font->baseline_offset = 0;
  font->relative_compose = 0;
  font->default_ascent = w32_font->metrics.tmAscent;
  font->pixel_size = size;
  font->driver = &w32font_driver;
  font->encoding_charset = -1;
  font->repertory_charset = -1;
  /* TODO: do we really want the minimum width here, which could be negative? */
  font->min_width = font->space_width;
  font->ascent = w32_font->metrics.tmAscent;
  font->descent = w32_font->metrics.tmDescent;
  font->height = font->ascent + font->descent;

  if (metrics)
    {
      font->underline_thickness = metrics->otmsUnderscoreSize;
      font->underline_position = -metrics->otmsUnderscorePosition;
    }
  else
    {
      font->underline_thickness = 0;
      font->underline_position = -1;
    }

  /* For temporary compatibility with legacy code that expects the
     name to be usable in x-list-fonts. Eventually we expect to change
     x-list-fonts and other places that use fonts so that this can be
     an fcname or similar.  */
  font->props[FONT_NAME_INDEX] = Ffont_xlfd_name (font_object, Qnil);

  return 1;
}

/* Callback function for EnumFontFamiliesEx.
 * Adds the name of a font to a Lisp list (passed in as the lParam arg).  */
static int CALLBACK ALIGN_STACK
add_font_name_to_list (ENUMLOGFONTEX *logical_font,
		       NEWTEXTMETRICEX *physical_font,
		       DWORD font_type, LPARAM list_object)
{
  Lisp_Object* list = (Lisp_Object *) list_object;
  Lisp_Object family;

  /* Skip vertical fonts (intended only for printing)  */
  if (logical_font->elfLogFont.lfFaceName[0] == '@')
    return 1;

  family = intern_font_name (logical_font->elfLogFont.lfFaceName);
  if (! memq_no_quit (family, *list))
    *list = Fcons (family, *list);

  return 1;
}

static int w32_decode_weight (int);
static int w32_encode_weight (int);

/* Convert an enumerated Windows font to an Emacs font entity.  */
static Lisp_Object
w32_enumfont_pattern_entity (Lisp_Object frame,
			     ENUMLOGFONTEX *logical_font,
			     NEWTEXTMETRICEX *physical_font,
			     DWORD font_type,
			     LOGFONT *requested_font,
			     Lisp_Object backend)
{
  Lisp_Object entity, tem;
  LOGFONT *lf = (LOGFONT*) logical_font;
  BYTE generic_type;
  DWORD full_type = physical_font->ntmTm.ntmFlags;

  entity = font_make_entity ();

  ASET (entity, FONT_TYPE_INDEX, backend);
  ASET (entity, FONT_REGISTRY_INDEX, w32_registry (lf->lfCharSet, font_type));
  ASET (entity, FONT_OBJLIST_INDEX, Qnil);

  /* Foundry is difficult to get in readable form on Windows.
     But Emacs crashes if it is not set, so set it to something more
     generic.  These values make xlfds compatible with Emacs 22. */
  if (lf->lfOutPrecision == OUT_STRING_PRECIS)
    tem = Qraster;
  else if (lf->lfOutPrecision == OUT_STROKE_PRECIS)
    tem = Qoutline;
  else
    tem = Qunknown;

  ASET (entity, FONT_FOUNDRY_INDEX, tem);

  /* Save the generic family in the extra info, as it is likely to be
     useful to users looking for a close match.  */
  generic_type = physical_font->ntmTm.tmPitchAndFamily & 0xF0;
  if (generic_type == FF_DECORATIVE)
    tem = Qdecorative;
  else if (generic_type == FF_MODERN)
    tem = Qmono;
  else if (generic_type == FF_ROMAN)
    tem = Qserif;
  else if (generic_type == FF_SCRIPT)
    tem = Qscript;
  else if (generic_type == FF_SWISS)
    tem = Qsans;
  else
    tem = Qnil;

  ASET (entity, FONT_ADSTYLE_INDEX, tem);

  if (physical_font->ntmTm.tmPitchAndFamily & 0x01)
    ASET (entity, FONT_SPACING_INDEX, make_number (FONT_SPACING_PROPORTIONAL));
  else
    ASET (entity, FONT_SPACING_INDEX, make_number (FONT_SPACING_CHARCELL));

  if (requested_font->lfQuality != DEFAULT_QUALITY)
    {
      font_put_extra (entity, QCantialias,
                      lispy_antialias_type (requested_font->lfQuality));
    }
  ASET (entity, FONT_FAMILY_INDEX,
	intern_font_name (lf->lfFaceName));

  FONT_SET_STYLE (entity, FONT_WEIGHT_INDEX,
		  make_number (w32_decode_weight (lf->lfWeight)));
  FONT_SET_STYLE (entity, FONT_SLANT_INDEX,
		  make_number (lf->lfItalic ? 200 : 100));
  /* TODO: PANOSE struct has this info, but need to call GetOutlineTextMetrics
     to get it.  */
  FONT_SET_STYLE (entity, FONT_WIDTH_INDEX, make_number (100));

  if (font_type & RASTER_FONTTYPE)
    ASET (entity, FONT_SIZE_INDEX,
          make_number (physical_font->ntmTm.tmHeight
                       + physical_font->ntmTm.tmExternalLeading));
  else
    ASET (entity, FONT_SIZE_INDEX, make_number (0));

  /* Cache Unicode codepoints covered by this font, as there is no other way
     of getting this information easily.  */
  if (font_type & TRUETYPE_FONTTYPE)
    {
      tem = font_supported_scripts (&physical_font->ntmFontSig);
      if (!NILP (tem))
        font_put_extra (entity, QCscript, tem);
    }

  /* This information is not fully available when opening fonts, so
     save it here.  Only Windows 2000 and later return information
     about opentype and type1 fonts, so need a fallback for detecting
     truetype so that this information is not any worse than we could
     have obtained later.  */
  if (EQ (backend, Quniscribe) && (full_type & NTMFLAGS_OPENTYPE))
    tem = Qopentype;
  else if (font_type & TRUETYPE_FONTTYPE)
    tem = intern ("truetype");
  else if (full_type & NTM_PS_OPENTYPE)
    tem = Qpostscript;
  else if (full_type & NTM_TYPE1)
    tem = intern ("type1");
  else if (font_type & RASTER_FONTTYPE)
    tem = intern ("w32bitmap");
  else
    tem = intern ("w32vector");

  font_put_extra (entity, QCformat, tem);

  return entity;
}


/* Convert generic families to the family portion of lfPitchAndFamily.  */
static BYTE
w32_generic_family (Lisp_Object name)
{
  /* Generic families.  */
  if (EQ (name, Qmonospace) || EQ (name, Qmono))
    return FF_MODERN;
  else if (EQ (name, Qsans) || EQ (name, Qsans_serif) || EQ (name, Qsansserif))
    return FF_SWISS;
  else if (EQ (name, Qserif))
    return FF_ROMAN;
  else if (EQ (name, Qdecorative))
    return FF_DECORATIVE;
  else if (EQ (name, Qscript))
    return FF_SCRIPT;
  else
    return FF_DONTCARE;
}

static int
logfonts_match (LOGFONT *font, LOGFONT *pattern)
{
  /* Only check height for raster fonts.  */
  if (pattern->lfHeight && font->lfOutPrecision == OUT_STRING_PRECIS
      && font->lfHeight != pattern->lfHeight)
    return 0;

  /* Have some flexibility with weights.  */
  if (pattern->lfWeight
      && ((font->lfWeight < (pattern->lfWeight - 150))
          || font->lfWeight > (pattern->lfWeight + 150)))
      return 0;

  /* Charset and face should be OK.  Italic has to be checked
     against the original spec, in case we don't have any preference.  */
  return 1;
}

/* Codepage Bitfields in FONTSIGNATURE struct.  */
#define CSB_JAPANESE (1 << 17)
#define CSB_KOREAN ((1 << 19) | (1 << 21))
#define CSB_CHINESE ((1 << 18) | (1 << 20))

static int
font_matches_spec (DWORD type, NEWTEXTMETRICEX *font,
		   Lisp_Object spec, Lisp_Object backend,
		   LOGFONT *logfont)
{
  Lisp_Object extra, val;

  /* Check italic. Can't check logfonts, since it is a boolean field,
     so there is no difference between "non-italic" and "don't care".  */
  {
    int slant = FONT_SLANT_NUMERIC (spec);

    if (slant >= 0
	&& ((slant > 150 && !font->ntmTm.tmItalic)
	    || (slant <= 150 && font->ntmTm.tmItalic)))
	  return 0;
  }

  /* Check adstyle against generic family.  */
  val = AREF (spec, FONT_ADSTYLE_INDEX);
  if (!NILP (val))
    {
      BYTE family = w32_generic_family (val);
      if (family != FF_DONTCARE
          && family != (font->ntmTm.tmPitchAndFamily & 0xF0))
        return 0;
    }

  /* Check spacing */
  val = AREF (spec, FONT_SPACING_INDEX);
  if (INTEGERP (val))
    {
      int spacing = XINT (val);
      int proportional = (spacing < FONT_SPACING_MONO);

      if ((proportional && !(font->ntmTm.tmPitchAndFamily & 0x01))
	  || (!proportional && (font->ntmTm.tmPitchAndFamily & 0x01)))
	return 0;
    }

  /* Check extra parameters.  */
  for (extra = AREF (spec, FONT_EXTRA_INDEX);
       CONSP (extra); extra = XCDR (extra))
    {
      Lisp_Object extra_entry;
      extra_entry = XCAR (extra);
      if (CONSP (extra_entry))
        {
          Lisp_Object key = XCAR (extra_entry);

          val = XCDR (extra_entry);
          if (EQ (key, QCscript) && SYMBOLP (val))
            {
              /* Only truetype fonts will have information about what
                 scripts they support.  This probably means the user
                 will have to force Emacs to use raster, PostScript
                 or ATM fonts for non-ASCII text.  */
              if (type & TRUETYPE_FONTTYPE)
                {
                  Lisp_Object support
                    = font_supported_scripts (&font->ntmFontSig);
                  if (! memq_no_quit (val, support))
                    return 0;

		  /* Avoid using non-Japanese fonts for Japanese, even
		     if they claim they are capable, due to known
		     breakage in Vista and Windows 7 fonts
		     (bug#6029).  */
		  if (EQ (val, Qkana)
		      && (font->ntmTm.tmCharSet != SHIFTJIS_CHARSET
			  || !(font->ntmFontSig.fsCsb[0] & CSB_JAPANESE)))
		    return 0;
                }
              else
                {
                  /* Return specific matches, but play it safe. Fonts
                     that cover more than their charset would suggest
                     are likely to be truetype or opentype fonts,
                     covered above.  */
                  if (EQ (val, Qlatin))
                    {
                      /* Although every charset but symbol, thai and
                         arabic contains the basic ASCII set of latin
                         characters, Emacs expects much more.  */
                      if (font->ntmTm.tmCharSet != ANSI_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qsymbol))
                    {
                      if (font->ntmTm.tmCharSet != SYMBOL_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qcyrillic))
                    {
                      if (font->ntmTm.tmCharSet != RUSSIAN_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qgreek))
                    {
                      if (font->ntmTm.tmCharSet != GREEK_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qarabic))
                    {
                      if (font->ntmTm.tmCharSet != ARABIC_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qhebrew))
                    {
                      if (font->ntmTm.tmCharSet != HEBREW_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qthai))
                    {
                      if (font->ntmTm.tmCharSet != THAI_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qkana))
                    {
                      if (font->ntmTm.tmCharSet != SHIFTJIS_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qbopomofo))
                    {
                      if (font->ntmTm.tmCharSet != CHINESEBIG5_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qhangul))
                    {
                      if (font->ntmTm.tmCharSet != HANGUL_CHARSET
                          && font->ntmTm.tmCharSet != JOHAB_CHARSET)
                        return 0;
                    }
                  else if (EQ (val, Qhan))
                    {
                      if (font->ntmTm.tmCharSet != CHINESEBIG5_CHARSET
                          && font->ntmTm.tmCharSet != GB2312_CHARSET
                          && font->ntmTm.tmCharSet != HANGUL_CHARSET
                          && font->ntmTm.tmCharSet != JOHAB_CHARSET
                          && font->ntmTm.tmCharSet != SHIFTJIS_CHARSET)
                        return 0;
                    }
                  else
                    /* Other scripts unlikely to be handled by non-truetype
		       fonts.  */
                    return 0;
                }
            }
	  else if (EQ (key, QClang) && SYMBOLP (val))
	    {
	      /* Just handle the CJK languages here, as the lang
		 parameter is used to select a font with appropriate
		 glyphs in the cjk unified ideographs block. Other fonts
	         support for a language can be solely determined by
	         its character coverage.  */
	      if (EQ (val, Qja))
		{
		  if (!(font->ntmFontSig.fsCsb[0] & CSB_JAPANESE))
		    return 0;
		}
	      else if (EQ (val, Qko))
		{
		  if (!(font->ntmFontSig.fsCsb[0] & CSB_KOREAN))
		    return 0;
		}
	      else if (EQ (val, Qzh))
		{
		  if (!(font->ntmFontSig.fsCsb[0] & CSB_CHINESE))
                    return 0;
		}
	      else
		/* Any other language, we don't recognize it. Only the above
                   currently appear in fontset.el, so it isn't worth
                   creating a mapping table of codepages/scripts to languages
                   or opening the font to see if there are any language tags
                   in it that the Windows API does not expose. Fontset
		   spec should have a fallback, as some backends do
		   not recognize language at all.  */
		return 0;
	    }
          else if (EQ (key, QCotf) && CONSP (val))
	    {
	      /* OTF features only supported by the uniscribe backend.  */
	      if (EQ (backend, Quniscribe))
		{
		  if (!uniscribe_check_otf (logfont, val))
		    return 0;
		}
	      else
		return 0;
	    }
        }
    }
  return 1;
}

static int
w32font_coverage_ok (FONTSIGNATURE * coverage, BYTE charset)
{
  DWORD subrange1 = coverage->fsUsb[1];

#define SUBRANGE1_HAN_MASK 0x08000000
#define SUBRANGE1_HANGEUL_MASK 0x01000000
#define SUBRANGE1_JAPANESE_MASK (0x00060000 | SUBRANGE1_HAN_MASK)

  if (charset == GB2312_CHARSET || charset == CHINESEBIG5_CHARSET)
    {
      return (subrange1 & SUBRANGE1_HAN_MASK) == SUBRANGE1_HAN_MASK;
    }
  else if (charset == SHIFTJIS_CHARSET)
    {
      return (subrange1 & SUBRANGE1_JAPANESE_MASK) == SUBRANGE1_JAPANESE_MASK;
    }
  else if (charset == HANGEUL_CHARSET)
    {
      return (subrange1 & SUBRANGE1_HANGEUL_MASK) == SUBRANGE1_HANGEUL_MASK;
    }

  return 1;
}

#ifndef WINDOWSNT
#define _strlwr strlwr
#endif /* !WINDOWSNT */

static int
check_face_name (LOGFONT *font, char *full_name)
{
  char full_iname[LF_FULLFACESIZE+1];

  /* Just check for names known to cause problems, since the full name
     can contain expanded abbreviations, prefixed foundry, postfixed
     style, the latter of which sometimes differs from the style indicated
     in the shorter name (eg Lt becomes Light or even Extra Light)  */

  /* Helvetica is mapped to Arial in Windows, but if a Type-1 Helvetica is
     installed, we run into problems with the Uniscribe backend which tries
     to avoid non-truetype fonts, and ends up mixing the Type-1 Helvetica
     with Arial's characteristics, since that attempt to use TrueType works
     some places, but not others.  */
  if (!xstrcasecmp (font->lfFaceName, "helvetica"))
    {
      strncpy (full_iname, full_name, LF_FULLFACESIZE);
      full_iname[LF_FULLFACESIZE] = 0;
      _strlwr (full_iname);
      return strstr ("helvetica", full_iname) != NULL;
    }
  /* Same for Helv.  */
  if (!xstrcasecmp (font->lfFaceName, "helv"))
    {
      strncpy (full_iname, full_name, LF_FULLFACESIZE);
      full_iname[LF_FULLFACESIZE] = 0;
      _strlwr (full_iname);
      return strstr ("helv", full_iname) != NULL;
    }

  /* Since Times is mapped to Times New Roman, a substring
     match is not sufficient to filter out the bogus match.  */
  else if (!xstrcasecmp (font->lfFaceName, "times"))
    return xstrcasecmp (full_name, "times") == 0;

  return 1;
}


/* Callback function for EnumFontFamiliesEx.
 * Checks if a font matches everything we are trying to check against,
 * and if so, adds it to a list. Both the data we are checking against
 * and the list to which the fonts are added are passed in via the
 * lparam argument, in the form of a font_callback_data struct. */
static int CALLBACK ALIGN_STACK
add_font_entity_to_list (ENUMLOGFONTEX *logical_font,
			 NEWTEXTMETRICEX *physical_font,
			 DWORD font_type, LPARAM lParam)
{
  struct font_callback_data *match_data
    = (struct font_callback_data *) lParam;
  Lisp_Object backend = match_data->opentype_only ? Quniscribe : Qgdi;
  Lisp_Object entity;

  int is_unicode = physical_font->ntmFontSig.fsUsb[3]
    || physical_font->ntmFontSig.fsUsb[2]
    || physical_font->ntmFontSig.fsUsb[1]
    || physical_font->ntmFontSig.fsUsb[0] & 0x3fffffff;

  /* Skip non matching fonts.  */

  /* For uniscribe backend, consider only truetype or opentype fonts
     that have some Unicode coverage.  */
  if (match_data->opentype_only
      && ((!(physical_font->ntmTm.ntmFlags & NTMFLAGS_OPENTYPE)
	   && !(font_type & TRUETYPE_FONTTYPE))
	  || !is_unicode))
    return 1;

  /* Ensure a match.  */
  if (!logfonts_match (&logical_font->elfLogFont, &match_data->pattern)
      || !font_matches_spec (font_type, physical_font,
			     match_data->orig_font_spec, backend,
			     &logical_font->elfLogFont)
      || !w32font_coverage_ok (&physical_font->ntmFontSig,
			       match_data->pattern.lfCharSet))
    return 1;

  /* Avoid substitutions involving raster fonts (eg Helv -> MS Sans Serif)
     We limit this to raster fonts, because the test can catch some
     genuine fonts (eg the full name of DejaVu Sans Mono Light is actually
     DejaVu Sans Mono ExtraLight). Helvetica -> Arial substitution will
     therefore get through this test.  Since full names can be prefixed
     by a foundry, we accept raster fonts if the font name is found
     anywhere within the full name.  */
  if ((logical_font->elfLogFont.lfOutPrecision == OUT_STRING_PRECIS
       && !strstr ((char *)logical_font->elfFullName,
		   logical_font->elfLogFont.lfFaceName))
      /* Check for well known substitutions that mess things up in the
	 presence of Type-1 fonts of the same name.  */
      || (!check_face_name (&logical_font->elfLogFont,
			    (char *)logical_font->elfFullName)))
    return 1;

  /* Make a font entity for the font.  */
  entity = w32_enumfont_pattern_entity (match_data->frame, logical_font,
					physical_font, font_type,
					&match_data->pattern,
					backend);

  if (!NILP (entity))
    {
      Lisp_Object spec_charset = AREF (match_data->orig_font_spec,
				       FONT_REGISTRY_INDEX);

      /* iso10646-1 fonts must contain Unicode mapping tables.  */
      if (EQ (spec_charset, Qiso10646_1))
	{
	  if (!is_unicode)
	    return 1;
	}
      /* unicode-bmp fonts must contain characters from the BMP.  */
      else if (EQ (spec_charset, Qunicode_bmp))
	{
	  if (!physical_font->ntmFontSig.fsUsb[3]
	      && !(physical_font->ntmFontSig.fsUsb[2] & 0xFFFFFF9E)
	      && !(physical_font->ntmFontSig.fsUsb[1] & 0xE81FFFFF)
	      && !(physical_font->ntmFontSig.fsUsb[0] & 0x007F001F))
	    return 1;
	}
      /* unicode-sip fonts must contain characters in Unicode plane 2.
	 so look for bit 57 (surrogates) in the Unicode subranges, plus
	 the bits for CJK ranges that include those characters.  */
      else if (EQ (spec_charset, Qunicode_sip))
	{
	  if (!(physical_font->ntmFontSig.fsUsb[1] & 0x02000000)
	      || !(physical_font->ntmFontSig.fsUsb[1] & 0x28000000))
	    return 1;
	}

      /* This font matches.  */

      /* If registry was specified, ensure it is reported as the same.  */
      if (!NILP (spec_charset))
	{
	  /* Avoid using non-Japanese fonts for Japanese, even if they
	     claim they are capable, due to known breakage in Vista
	     and Windows 7 fonts (bug#6029).  */
	  if (logical_font->elfLogFont.lfCharSet == SHIFTJIS_CHARSET
	      && !(physical_font->ntmFontSig.fsCsb[0] & CSB_JAPANESE))
	    return 1;
	  else
	    ASET (entity, FONT_REGISTRY_INDEX, spec_charset);
	}
      /* Otherwise if using the uniscribe backend, report ANSI and DEFAULT
	 fonts as Unicode and skip other charsets.  */
      else if (match_data->opentype_only)
	{
	  if (logical_font->elfLogFont.lfCharSet == ANSI_CHARSET
	      || logical_font->elfLogFont.lfCharSet == DEFAULT_CHARSET)
	    ASET (entity, FONT_REGISTRY_INDEX, Qiso10646_1);
	  else
	    return 1;
	}

      /* Add this font to the list.  */
      match_data->list = Fcons (entity, match_data->list);
    }
  return 1;
}

/* Callback function for EnumFontFamiliesEx.
 * Terminates the search once we have a match. */
static int CALLBACK ALIGN_STACK
add_one_font_entity_to_list (ENUMLOGFONTEX *logical_font,
			     NEWTEXTMETRICEX *physical_font,
			     DWORD font_type, LPARAM lParam)
{
  struct font_callback_data *match_data
    = (struct font_callback_data *) lParam;
  add_font_entity_to_list (logical_font, physical_font, font_type, lParam);

  /* If we have a font in the list, terminate the search.  */
  return NILP (match_data->list);
}

/* Old function to convert from x to w32 charset, from w32fns.c.  */
static LONG
x_to_w32_charset (char * lpcs)
{
  Lisp_Object this_entry, w32_charset;
  char *charset;
  int len = strlen (lpcs);

  /* Support "*-#nnn" format for unknown charsets.  */
  if (strncmp (lpcs, "*-#", 3) == 0)
    return atoi (lpcs + 3);

  /* All Windows fonts qualify as Unicode.  */
  if (!strncmp (lpcs, "iso10646", 8))
    return DEFAULT_CHARSET;

  /* Handle wildcards by ignoring them; eg. treat "big5*-*" as "big5".  */
  charset = alloca (len + 1);
  strcpy (charset, lpcs);
  lpcs = strchr (charset, '*');
  if (lpcs)
    *lpcs = '\0';

  /* Look through w32-charset-info-alist for the character set.
     Format of each entry is
       (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE)).
  */
  this_entry = Fassoc (build_string (charset), Vw32_charset_info_alist);

  if (NILP (this_entry))
    {
      /* At startup, we want iso8859-1 fonts to come up properly. */
      if (xstrcasecmp (charset, "iso8859-1") == 0)
        return ANSI_CHARSET;
      else
        return DEFAULT_CHARSET;
    }

  w32_charset = Fcar (Fcdr (this_entry));

  /* Translate Lisp symbol to number.  */
  if (EQ (w32_charset, Qw32_charset_ansi))
    return ANSI_CHARSET;
  if (EQ (w32_charset, Qw32_charset_symbol))
    return SYMBOL_CHARSET;
  if (EQ (w32_charset, Qw32_charset_shiftjis))
    return SHIFTJIS_CHARSET;
  if (EQ (w32_charset, Qw32_charset_hangeul))
    return HANGEUL_CHARSET;
  if (EQ (w32_charset, Qw32_charset_chinesebig5))
    return CHINESEBIG5_CHARSET;
  if (EQ (w32_charset, Qw32_charset_gb2312))
    return GB2312_CHARSET;
  if (EQ (w32_charset, Qw32_charset_oem))
    return OEM_CHARSET;
  if (EQ (w32_charset, Qw32_charset_johab))
    return JOHAB_CHARSET;
  if (EQ (w32_charset, Qw32_charset_easteurope))
    return EASTEUROPE_CHARSET;
  if (EQ (w32_charset, Qw32_charset_turkish))
    return TURKISH_CHARSET;
  if (EQ (w32_charset, Qw32_charset_baltic))
    return BALTIC_CHARSET;
  if (EQ (w32_charset, Qw32_charset_russian))
    return RUSSIAN_CHARSET;
  if (EQ (w32_charset, Qw32_charset_arabic))
    return ARABIC_CHARSET;
  if (EQ (w32_charset, Qw32_charset_greek))
    return GREEK_CHARSET;
  if (EQ (w32_charset, Qw32_charset_hebrew))
    return HEBREW_CHARSET;
  if (EQ (w32_charset, Qw32_charset_vietnamese))
    return VIETNAMESE_CHARSET;
  if (EQ (w32_charset, Qw32_charset_thai))
    return THAI_CHARSET;
  if (EQ (w32_charset, Qw32_charset_mac))
    return MAC_CHARSET;

  return DEFAULT_CHARSET;
}


/* Convert a Lisp font registry (symbol) to a windows charset.  */
static LONG
registry_to_w32_charset (Lisp_Object charset)
{
  if (EQ (charset, Qiso10646_1) || EQ (charset, Qunicode_bmp)
      || EQ (charset, Qunicode_sip))
    return DEFAULT_CHARSET; /* UNICODE_CHARSET not defined in MingW32 */
  else if (EQ (charset, Qiso8859_1))
    return ANSI_CHARSET;
  else if (SYMBOLP (charset))
    return x_to_w32_charset (SSDATA (SYMBOL_NAME (charset)));
  else
    return DEFAULT_CHARSET;
}

/* Old function to convert from w32 to x charset, from w32fns.c.  */
static char *
w32_to_x_charset (int fncharset, char *matching)
{
  static char buf[32];
  Lisp_Object charset_type;
  int match_len = 0;

  if (matching)
    {
      /* If fully specified, accept it as it is.  Otherwise use a
	 substring match. */
      char *wildcard = strchr (matching, '*');
      if (wildcard)
	*wildcard = '\0';
      else if (strchr (matching, '-'))
	return matching;

      match_len = strlen (matching);
    }

  switch (fncharset)
    {
    case ANSI_CHARSET:
      /* Handle startup case of w32-charset-info-alist not
         being set up yet. */
      if (NILP (Vw32_charset_info_alist))
        return (char *)"iso8859-1";
      charset_type = Qw32_charset_ansi;
      break;
    case DEFAULT_CHARSET:
      charset_type = Qw32_charset_default;
      break;
    case SYMBOL_CHARSET:
      charset_type = Qw32_charset_symbol;
      break;
    case SHIFTJIS_CHARSET:
      charset_type = Qw32_charset_shiftjis;
      break;
    case HANGEUL_CHARSET:
      charset_type = Qw32_charset_hangeul;
      break;
    case GB2312_CHARSET:
      charset_type = Qw32_charset_gb2312;
      break;
    case CHINESEBIG5_CHARSET:
      charset_type = Qw32_charset_chinesebig5;
      break;
    case OEM_CHARSET:
      charset_type = Qw32_charset_oem;
      break;
    case EASTEUROPE_CHARSET:
      charset_type = Qw32_charset_easteurope;
      break;
    case TURKISH_CHARSET:
      charset_type = Qw32_charset_turkish;
      break;
    case BALTIC_CHARSET:
      charset_type = Qw32_charset_baltic;
      break;
    case RUSSIAN_CHARSET:
      charset_type = Qw32_charset_russian;
      break;
    case ARABIC_CHARSET:
      charset_type = Qw32_charset_arabic;
      break;
    case GREEK_CHARSET:
      charset_type = Qw32_charset_greek;
      break;
    case HEBREW_CHARSET:
      charset_type = Qw32_charset_hebrew;
      break;
    case VIETNAMESE_CHARSET:
      charset_type = Qw32_charset_vietnamese;
      break;
    case THAI_CHARSET:
      charset_type = Qw32_charset_thai;
      break;
    case MAC_CHARSET:
      charset_type = Qw32_charset_mac;
      break;
    case JOHAB_CHARSET:
      charset_type = Qw32_charset_johab;
      break;

    default:
      /* Encode numerical value of unknown charset.  */
      sprintf (buf, "*-#%d", fncharset);
      return buf;
    }

  {
    Lisp_Object rest;
    char * best_match = NULL;
    int matching_found = 0;

    /* Look through w32-charset-info-alist for the character set.
       Prefer ISO codepages, and prefer lower numbers in the ISO
       range. Only return charsets for codepages which are installed.

       Format of each entry is
         (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE)).
    */
    for (rest = Vw32_charset_info_alist; CONSP (rest); rest = XCDR (rest))
      {
        char * x_charset;
        Lisp_Object w32_charset;
        Lisp_Object codepage;

        Lisp_Object this_entry = XCAR (rest);

        /* Skip invalid entries in alist. */
        if (!CONSP (this_entry) || !STRINGP (XCAR (this_entry))
            || !CONSP (XCDR (this_entry))
            || !SYMBOLP (XCAR (XCDR (this_entry))))
          continue;

        x_charset = SSDATA (XCAR (this_entry));
        w32_charset = XCAR (XCDR (this_entry));
        codepage = XCDR (XCDR (this_entry));

        /* Look for Same charset and a valid codepage (or non-int
           which means ignore).  */
        if (EQ (w32_charset, charset_type)
            && (!INTEGERP (codepage) || XINT (codepage) == CP_DEFAULT
                || IsValidCodePage (XINT (codepage))))
          {
            /* If we don't have a match already, then this is the
               best.  */
            if (!best_match)
	      {
		best_match = x_charset;
		if (matching && !strnicmp (x_charset, matching, match_len))
		  matching_found = 1;
	      }
	    /* If we already found a match for MATCHING, then
	       only consider other matches.  */
	    else if (matching_found
		     && strnicmp (x_charset, matching, match_len))
	      continue;
	    /* If this matches what we want, and the best so far doesn't,
	       then this is better.  */
	    else if (!matching_found && matching
		     && !strnicmp (x_charset, matching, match_len))
	      {
		best_match = x_charset;
		matching_found = 1;
	      }
	    /* If this is fully specified, and the best so far isn't,
	       then this is better.  */
	    else if ((!strchr (best_match, '-') && strchr (x_charset, '-'))
	    /* If this is an ISO codepage, and the best so far isn't,
	       then this is better, but only if it fully specifies the
	       encoding.  */
		|| (strnicmp (best_match, "iso", 3) != 0
		    && strnicmp (x_charset, "iso", 3) == 0
		    && strchr (x_charset, '-')))
		best_match = x_charset;
            /* If both are ISO8859 codepages, choose the one with the
               lowest number in the encoding field.  */
            else if (strnicmp (best_match, "iso8859-", 8) == 0
                     && strnicmp (x_charset, "iso8859-", 8) == 0)
              {
                int best_enc = atoi (best_match + 8);
                int this_enc = atoi (x_charset + 8);
                if (this_enc > 0 && this_enc < best_enc)
                  best_match = x_charset;
              }
          }
      }

    /* If no match, encode the numeric value. */
    if (!best_match)
      {
        sprintf (buf, "*-#%d", fncharset);
        return buf;
      }

    strncpy (buf, best_match, 31);
    /* If the charset is not fully specified, put -0 on the end.  */
    if (!strchr (best_match, '-'))
      {
	int pos = strlen (best_match);
	/* Charset specifiers shouldn't be very long.  If it is a made
	   up one, truncating it should not do any harm since it isn't
	   recognized anyway.  */
	if (pos > 29)
	  pos = 29;
	strcpy (buf + pos, "-0");
      }
    buf[31] = '\0';
    return buf;
  }
}

static Lisp_Object
w32_registry (LONG w32_charset, DWORD font_type)
{
  char *charset;

  /* If charset is defaulted, charset is Unicode or unknown, depending on
     font type.  */
  if (w32_charset == DEFAULT_CHARSET)
    return font_type == TRUETYPE_FONTTYPE ? Qiso10646_1 : Qunknown;

  charset = w32_to_x_charset (w32_charset, NULL);
  return font_intern_prop (charset, strlen (charset), 1);
}

static int
w32_decode_weight (int fnweight)
{
  if (fnweight >= FW_HEAVY)      return 210;
  if (fnweight >= FW_EXTRABOLD)  return 205;
  if (fnweight >= FW_BOLD)       return 200;
  if (fnweight >= FW_SEMIBOLD)   return 180;
  if (fnweight >= FW_NORMAL)     return 100;
  if (fnweight >= FW_LIGHT)      return 50;
  if (fnweight >= FW_EXTRALIGHT) return 40;
  if (fnweight >  FW_THIN)       return 20;
  return 0;
}

static int
w32_encode_weight (int n)
{
  if (n >= 210) return FW_HEAVY;
  if (n >= 205) return FW_EXTRABOLD;
  if (n >= 200) return FW_BOLD;
  if (n >= 180) return FW_SEMIBOLD;
  if (n >= 100) return FW_NORMAL;
  if (n >= 50)  return FW_LIGHT;
  if (n >= 40)  return FW_EXTRALIGHT;
  if (n >= 20)  return FW_THIN;
  return 0;
}

/* Convert a Windows font weight into one of the weights supported
   by fontconfig (see font.c:font_parse_fcname).  */
static Lisp_Object
w32_to_fc_weight (int n)
{
  if (n >= FW_EXTRABOLD) return intern ("black");
  if (n >= FW_BOLD)      return Qbold;
  if (n >= FW_SEMIBOLD)  return intern ("demibold");
  if (n >= FW_NORMAL)    return intern ("medium");
  return Qlight;
}

/* Fill in all the available details of LOGFONT from FONT_SPEC.  */
static void
fill_in_logfont (struct frame *f, LOGFONT *logfont, Lisp_Object font_spec)
{
  Lisp_Object tmp, extra;
  int dpi = FRAME_RES_Y (f);

  tmp = AREF (font_spec, FONT_DPI_INDEX);
  if (INTEGERP (tmp))
    {
      dpi = XINT (tmp);
    }
  else if (FLOATP (tmp))
    {
      dpi = (int) (XFLOAT_DATA (tmp) + 0.5);
    }

  /* Height  */
  tmp = AREF (font_spec, FONT_SIZE_INDEX);
  if (INTEGERP (tmp))
    logfont->lfHeight = -1 * XINT (tmp);
  else if (FLOATP (tmp))
    logfont->lfHeight = (int) (-1.0 *  dpi * XFLOAT_DATA (tmp) / 72.27 + 0.5);

  /* Escapement  */

  /* Orientation  */

  /* Weight  */
  tmp = AREF (font_spec, FONT_WEIGHT_INDEX);
  if (INTEGERP (tmp))
    logfont->lfWeight = w32_encode_weight (FONT_WEIGHT_NUMERIC (font_spec));

  /* Italic  */
  tmp = AREF (font_spec, FONT_SLANT_INDEX);
  if (INTEGERP (tmp))
    {
      int slant = FONT_SLANT_NUMERIC (font_spec);
      logfont->lfItalic = slant > 150 ? 1 : 0;
    }

  /* Underline  */

  /* Strikeout  */

  /* Charset  */
  tmp = AREF (font_spec, FONT_REGISTRY_INDEX);
  if (! NILP (tmp))
    logfont->lfCharSet = registry_to_w32_charset (tmp);
  else
    logfont->lfCharSet = DEFAULT_CHARSET;

  /* Out Precision  */

  /* Clip Precision  */

  /* Quality */
  logfont->lfQuality = DEFAULT_QUALITY;

  /* Generic Family and Face Name  */
  logfont->lfPitchAndFamily = FF_DONTCARE | DEFAULT_PITCH;

  tmp = AREF (font_spec, FONT_FAMILY_INDEX);
  if (! NILP (tmp))
    {
      logfont->lfPitchAndFamily = w32_generic_family (tmp) | DEFAULT_PITCH;
      if ((logfont->lfPitchAndFamily & 0xF0) != FF_DONTCARE)
        ; /* Font name was generic, don't fill in font name.  */
        /* Font families are interned, but allow for strings also in case of
           user input.  */
      else if (SYMBOLP (tmp))
	{
	  strncpy (logfont->lfFaceName,
		   SSDATA (ENCODE_SYSTEM (SYMBOL_NAME (tmp))), LF_FACESIZE);
	  logfont->lfFaceName[LF_FACESIZE-1] = '\0';
	}
    }

  tmp = AREF (font_spec, FONT_ADSTYLE_INDEX);
  if (!NILP (tmp))
    {
      /* Override generic family.  */
      BYTE family = w32_generic_family (tmp);
      if (family != FF_DONTCARE)
        logfont->lfPitchAndFamily = family | DEFAULT_PITCH;
    }

  /* Set pitch based on the spacing property.  */
  tmp = AREF (font_spec, FONT_SPACING_INDEX);
  if (INTEGERP (tmp))
    {
      int spacing = XINT (tmp);
      if (spacing < FONT_SPACING_MONO)
	logfont->lfPitchAndFamily
	  = (logfont->lfPitchAndFamily & 0xF0) | VARIABLE_PITCH;
      else
	logfont->lfPitchAndFamily
	  = (logfont->lfPitchAndFamily & 0xF0) | FIXED_PITCH;
    }

  /* Process EXTRA info.  */
  for (extra = AREF (font_spec, FONT_EXTRA_INDEX);
       CONSP (extra); extra = XCDR (extra))
    {
      tmp = XCAR (extra);
      if (CONSP (tmp))
        {
          Lisp_Object key, val;
          key = XCAR (tmp), val = XCDR (tmp);
          /* Only use QCscript if charset is not provided, or is Unicode
             and a single script is specified.  This is rather crude,
             and is only used to narrow down the fonts returned where
             there is a definite match.  Some scripts, such as latin, han,
             cjk-misc match multiple lfCharSet values, so we can't pre-filter
             them.  */
	  if (EQ (key, QCscript)
                   && logfont->lfCharSet == DEFAULT_CHARSET
                   && SYMBOLP (val))
            {
              if (EQ (val, Qgreek))
                logfont->lfCharSet = GREEK_CHARSET;
              else if (EQ (val, Qhangul))
                logfont->lfCharSet = HANGUL_CHARSET;
              else if (EQ (val, Qkana) || EQ (val, Qkanbun))
                logfont->lfCharSet = SHIFTJIS_CHARSET;
              else if (EQ (val, Qbopomofo))
                logfont->lfCharSet = CHINESEBIG5_CHARSET;
              /* GB 18030 supports tibetan, yi, mongolian,
                 fonts that support it should show up if we ask for
                 GB2312 fonts. */
              else if (EQ (val, Qtibetan) || EQ (val, Qyi)
                       || EQ (val, Qmongolian))
                logfont->lfCharSet = GB2312_CHARSET;
              else if (EQ (val, Qhebrew))
                logfont->lfCharSet = HEBREW_CHARSET;
              else if (EQ (val, Qarabic))
                logfont->lfCharSet = ARABIC_CHARSET;
              else if (EQ (val, Qthai))
                logfont->lfCharSet = THAI_CHARSET;
            }
          else if (EQ (key, QCantialias) && SYMBOLP (val))
            {
              logfont->lfQuality = w32_antialias_type (val);
            }
        }
    }
}

static void
list_all_matching_fonts (struct font_callback_data *match_data)
{
  HDC dc;
  Lisp_Object families = w32font_list_family (XFRAME (match_data->frame));
  struct frame *f = XFRAME (match_data->frame);

  dc = get_frame_dc (f);

  while (!NILP (families))
    {
      /* Only fonts from the current locale are given localized names
	 on Windows, so we can keep backwards compatibility with
	 Windows 9x/ME by using non-Unicode font enumeration without
	 sacrificing internationalization here.  */
      char *name;
      Lisp_Object family = CAR (families);
      families = CDR (families);
      if (NILP (family))
        continue;
      else if (SYMBOLP (family))
        name = SSDATA (ENCODE_SYSTEM (SYMBOL_NAME (family)));
      else
	continue;

      strncpy (match_data->pattern.lfFaceName, name, LF_FACESIZE);
      match_data->pattern.lfFaceName[LF_FACESIZE - 1] = '\0';

      EnumFontFamiliesEx (dc, &match_data->pattern,
                          (FONTENUMPROC) add_font_entity_to_list,
                          (LPARAM) match_data, 0);
    }

  release_frame_dc (f, dc);
}

static Lisp_Object
lispy_antialias_type (BYTE type)
{
  Lisp_Object lispy;

  switch (type)
    {
    case NONANTIALIASED_QUALITY:
      lispy = Qnone;
      break;
    case ANTIALIASED_QUALITY:
      lispy = Qstandard;
      break;
    case CLEARTYPE_QUALITY:
      lispy = Qsubpixel;
      break;
    case CLEARTYPE_NATURAL_QUALITY:
      lispy = Qnatural;
      break;
    default:
      lispy = Qnil;
      break;
    }
  return lispy;
}

/* Convert antialiasing symbols to lfQuality  */
static BYTE
w32_antialias_type (Lisp_Object type)
{
  if (EQ (type, Qnone))
    return NONANTIALIASED_QUALITY;
  else if (EQ (type, Qstandard))
    return ANTIALIASED_QUALITY;
  else if (EQ (type, Qsubpixel))
    return CLEARTYPE_QUALITY;
  else if (EQ (type, Qnatural))
    return CLEARTYPE_NATURAL_QUALITY;
  else
    return DEFAULT_QUALITY;
}

/* Return a list of all the scripts that the font supports.  */
static Lisp_Object
font_supported_scripts (FONTSIGNATURE * sig)
{
  DWORD * subranges = sig->fsUsb;
  Lisp_Object supported = Qnil;

  /* Match a single subrange. SYM is set if bit N is set in subranges.  */
#define SUBRANGE(n,sym) \
  if (subranges[(n) / 32] & (1 << ((n) % 32))) \
    supported = Fcons ((sym), supported)

  /* Match multiple subranges. SYM is set if any MASK bit is set in
     subranges[0 - 3].  */
#define MASK_ANY(mask0,mask1,mask2,mask3,sym)      \
  if ((subranges[0] & (mask0)) || (subranges[1] & (mask1))     \
      || (subranges[2] & (mask2)) || (subranges[3] & (mask3))) \
    supported = Fcons ((sym), supported)

  SUBRANGE (0, Qlatin);
  /* 1: Latin-1 supplement, 2: Latin Extended A, 3: Latin Extended B.  */
  /* Most fonts that support Latin will have good coverage of the
     Extended blocks, so in practice marking them below is not really
     needed, or useful: if a font claims support for, say, Latin
     Extended-B, but does not contain glyphs for some of the
     characters in the range, the user will have to augment her
     fontset to display those few characters.  But we mark these
     subranges here anyway, for the marginal use cases where they
     might make a difference.  */
  SUBRANGE (1, Qlatin);
  SUBRANGE (2, Qlatin);
  SUBRANGE (3, Qlatin);
  SUBRANGE (4, Qphonetic);
  /* 5: Spacing and tone modifiers, 6: Combining Diacritical Marks.  */
  SUBRANGE (7, Qgreek);
  SUBRANGE (8, Qcoptic);
  SUBRANGE (9, Qcyrillic);
  SUBRANGE (10, Qarmenian);
  SUBRANGE (11, Qhebrew);
  /* Bit 12 is rather useless if the user has Hebrew fonts installed,
     because apparently at some point in the past bit 12 was "Hebrew
     Extended", and many Hebrew fonts still have this bit set.  The
     only workaround is to customize fontsets to use fonts like Ebrima
     or Quivira.  */
  SUBRANGE (12, Qvai);
  SUBRANGE (13, Qarabic);
  SUBRANGE (14, Qnko);
  SUBRANGE (15, Qdevanagari);
  SUBRANGE (16, Qbengali);
  SUBRANGE (17, Qgurmukhi);
  SUBRANGE (18, Qgujarati);
  SUBRANGE (19, Qoriya);
  SUBRANGE (20, Qtamil);
  SUBRANGE (21, Qtelugu);
  SUBRANGE (22, Qkannada);
  SUBRANGE (23, Qmalayalam);
  SUBRANGE (24, Qthai);
  SUBRANGE (25, Qlao);
  SUBRANGE (26, Qgeorgian);
  SUBRANGE (27, Qbalinese);
  /* 28: Hangul Jamo -- covered by the default fontset.  */
  /* 29: Latin Extended, 30: Greek Extended -- covered above.  */
  /* 31: Supplemental Punctuation -- most probably be masked by
     Courier New, so fontset customization is needed.  */
  SUBRANGE (31, Qsymbol);
  /* 32-47: Symbols (defined below).  */
  SUBRANGE (48, Qcjk_misc);
  /* Match either 49: katakana or 50: hiragana for kana.  */
  MASK_ANY (0, 0x00060000, 0, 0, Qkana);
  SUBRANGE (51, Qbopomofo);
  /* 52: Compatibility Jamo */
  SUBRANGE (53, Qphags_pa);
  /* 54: Enclosed CJK letters and months, 55: CJK Compatibility.  */
  SUBRANGE (56, Qhangul);
  /* 57: Surrogates.  */
  SUBRANGE (58, Qphoenician);
  SUBRANGE (59, Qhan); /* There are others, but this is the main one.  */
  SUBRANGE (59, Qideographic_description); /* Windows lumps this in.  */
  SUBRANGE (59, Qkanbun); /* And this.  */
  /* These are covered well either by the default Courier New or by
     CJK fonts that are set up specially in the default fontset.  So
     marking them here wouldn't be useful.  */
  /* 60: Private use, 61: CJK strokes and compatibility.  */
  /* 62: Alphabetic Presentation, 63: Arabic Presentation A.  */
  /* 64: Combining half marks, 65: Vertical and CJK compatibility.  */
  /* 66: Small forms, 67: Arabic Presentation B, 68: Half and Full width.  */
  /* 69: Specials.  */
  SUBRANGE (70, Qtibetan);
  SUBRANGE (71, Qsyriac);
  SUBRANGE (72, Qthaana);
  SUBRANGE (73, Qsinhala);
  SUBRANGE (74, Qmyanmar);
  SUBRANGE (75, Qethiopic);
  SUBRANGE (76, Qcherokee);
  SUBRANGE (77, Qcanadian_aboriginal);
  SUBRANGE (78, Qogham);
  SUBRANGE (79, Qrunic);
  SUBRANGE (80, Qkhmer);
  SUBRANGE (81, Qmongolian);
  SUBRANGE (82, Qbraille);
  SUBRANGE (83, Qyi);
  SUBRANGE (84, Qbuhid);
  SUBRANGE (84, Qhanunoo);
  SUBRANGE (84, Qtagalog);
  SUBRANGE (84, Qtagbanwa);
  SUBRANGE (85, Qold_italic);
  SUBRANGE (86, Qgothic);
  SUBRANGE (87, Qdeseret);
  SUBRANGE (88, Qbyzantine_musical_symbol);
  SUBRANGE (88, Qmusical_symbol); /* Windows doesn't distinguish these.  */
  SUBRANGE (89, Qmathematical_bold); /* See fontset.el:setup-default-fontset.  */
  SUBRANGE (89, Qmathematical_italic);
  SUBRANGE (89, Qmathematical_bold_italic);
  SUBRANGE (89, Qmathematical_script);
  SUBRANGE (89, Qmathematical_bold_script);
  SUBRANGE (89, Qmathematical_fraktur);
  SUBRANGE (89, Qmathematical_double_struck);
  SUBRANGE (89, Qmathematical_bold_fraktur);
  SUBRANGE (89, Qmathematical_sans_serif);
  SUBRANGE (89, Qmathematical_sans_serif_bold);
  SUBRANGE (89, Qmathematical_sans_serif_italic);
  SUBRANGE (89, Qmathematical_sans_serif_bold_italic);
  SUBRANGE (89, Qmathematical_monospace);
  /* 90: Private use, 91: Variation selectors, 92: Tags.  */
  SUBRANGE (93, Qlimbu);
  SUBRANGE (94, Qtai_le);
  SUBRANGE (95, Qtai_le);
  SUBRANGE (96, Qbuginese);
  SUBRANGE (97, Qglagolitic);
  SUBRANGE (98, Qtifinagh);
  /* 99: Yijing Hexagrams.  */
  SUBRANGE (99, Qhan);
  SUBRANGE (100, Qsyloti_nagri);
  SUBRANGE (101, Qlinear_b);
  SUBRANGE (102, Qancient_greek_number);
  SUBRANGE (103, Qugaritic);
  SUBRANGE (104, Qold_persian);
  SUBRANGE (105, Qshavian);
  SUBRANGE (106, Qosmanya);
  SUBRANGE (107, Qcypriot);
  SUBRANGE (108, Qkharoshthi);
  SUBRANGE (109, Qtai_xuan_jing_symbol);
  SUBRANGE (110, Qcuneiform);
  SUBRANGE (111, Qcounting_rod_numeral);
  SUBRANGE (112, Qsundanese);
  SUBRANGE (113, Qlepcha);
  SUBRANGE (114, Qol_chiki);
  SUBRANGE (115, Qsaurashtra);
  SUBRANGE (116, Qkayah_li);
  SUBRANGE (117, Qrejang);
  SUBRANGE (118, Qcham);
  SUBRANGE (119, Qancient_symbol);
  SUBRANGE (120, Qphaistos_disc);
  SUBRANGE (121, Qlycian);
  SUBRANGE (121, Qcarian);
  SUBRANGE (121, Qlydian);
  SUBRANGE (122, Qdomino_tile);
  SUBRANGE (122, Qmahjong_tile);
  /* 123-127: Reserved.  */

  /* There isn't really a main symbol range, so include symbol if any
     relevant range is set.  */
  MASK_ANY (0x8000000, 0x0000FFFF, 0, 0, Qsymbol);

  /* Missing: Tai Viet (U+AA80-U+AADF).  */
#undef SUBRANGE
#undef MASK_ANY

  return supported;
}

/* Generate a full name for a Windows font.
   The full name is in fcname format, with weight, slant and antialiasing
   specified if they are not "normal".  */
static int
w32font_full_name (LOGFONT * font, Lisp_Object font_obj,
		   int pixel_size, char *name, int nbytes)
{
  int len, height, outline;
  char *p;
  Lisp_Object antialiasing, weight = Qnil;

  len = strlen (font->lfFaceName);

  outline = EQ (AREF (font_obj, FONT_FOUNDRY_INDEX), Qoutline);

  /* Represent size of scalable fonts by point size. But use pixelsize for
     raster fonts to indicate that they are exactly that size.  */
  if (outline)
    len += 11; /* -SIZE */
  else
    len += 21;

  if (font->lfItalic)
    len += 7; /* :italic */

  if (font->lfWeight && font->lfWeight != FW_NORMAL)
    {
      weight = w32_to_fc_weight (font->lfWeight);
      len += 1 + SBYTES (SYMBOL_NAME (weight)); /* :WEIGHT */
    }

  antialiasing = lispy_antialias_type (font->lfQuality);
  if (! NILP (antialiasing))
    len += 11 + SBYTES (SYMBOL_NAME (antialiasing)); /* :antialias=NAME */

  /* Check that the buffer is big enough  */
  if (len > nbytes)
    return -1;

  p = name;
  p += sprintf (p, "%s", font->lfFaceName);

  height = font->lfHeight ? eabs (font->lfHeight) : pixel_size;

  if (height > 0)
    {
      if (outline)
        {
          double pointsize = height * 72.0 / one_w32_display_info.resy;
          /* Round to nearest half point.  floor is used, since round is not
	     supported in MS library.  */
          pointsize = floor (pointsize * 2 + 0.5) / 2;
          p += sprintf (p, "-%1.1f", pointsize);
        }
      else
        p += sprintf (p, ":pixelsize=%d", height);
    }

  if (SYMBOLP (weight) && ! NILP (weight))
    p += sprintf (p, ":%s", SDATA (SYMBOL_NAME (weight)));

  if (font->lfItalic)
    p += sprintf (p, ":italic");

  if (SYMBOLP (antialiasing) && ! NILP (antialiasing))
    p += sprintf (p, ":antialias=%s", SDATA (SYMBOL_NAME (antialiasing)));

  return (p - name);
}

/* Convert a logfont and point size into a fontconfig style font name.
   POINTSIZE is in tenths of points.
   If SIZE indicates the size of buffer FCNAME, into which the font name
   is written.  If the buffer is not large enough to contain the name,
   the function returns -1, otherwise it returns the number of bytes
   written to FCNAME.  */
static int
logfont_to_fcname (LOGFONT* font, int pointsize, char *fcname, int size)
{
  int len, height;
  char *p = fcname;
  Lisp_Object weight = Qnil;

  len = strlen (font->lfFaceName) + 2;
  height = pointsize / 10;
  while (height /= 10)
    len++;

  if (pointsize % 10)
    len += 2;

  if (font->lfItalic)
    len += 7; /* :italic */
  if (font->lfWeight && font->lfWeight != FW_NORMAL)
    {
      weight = w32_to_fc_weight (font->lfWeight);
      len += SBYTES (SYMBOL_NAME (weight)) + 1;
    }

  if (len > size)
    return -1;

  p += sprintf (p, "%s-%d", font->lfFaceName, pointsize / 10);
  if (pointsize % 10)
    p += sprintf (p, ".%d", pointsize % 10);

  if (SYMBOLP (weight) && !NILP (weight))
    p += sprintf (p, ":%s", SDATA (SYMBOL_NAME (weight)));

  if (font->lfItalic)
    p += sprintf (p, ":italic");

  return (p - fcname);
}

static void
compute_metrics (HDC dc, struct w32font_info *w32_font, unsigned int code,
		 struct w32_metric_cache *metrics)
{
  GLYPHMETRICS gm;
  MAT2 transform;
  unsigned int options = GGO_METRICS;
  INT width;

  if (w32_font->glyph_idx)
    options |= GGO_GLYPH_INDEX;

  memset (&transform, 0, sizeof (transform));
  transform.eM11.value = 1;
  transform.eM22.value = 1;

  if (get_glyph_outline_w (dc, code, options, &gm, 0, NULL, &transform)
      != GDI_ERROR)
    {
      metrics->lbearing = gm.gmptGlyphOrigin.x;
      metrics->rbearing = gm.gmptGlyphOrigin.x + gm.gmBlackBoxX;
      metrics->width = gm.gmCellIncX;
      metrics->ascent = gm.gmptGlyphOrigin.y;
      metrics->descent = gm.gmBlackBoxY - gm.gmptGlyphOrigin.y;
      metrics->status = W32METRIC_SUCCESS;
    }
  else if (get_char_width_32_w (dc, code, code, &width) != 0)
    {
      metrics->lbearing = 0;
      metrics->rbearing = width;
      metrics->width = width;
      metrics->ascent = w32_font->font.ascent;
      metrics->descent = w32_font->font.descent;
      metrics->status = W32METRIC_SUCCESS;
    }
  else
    metrics->status = W32METRIC_FAIL;
}

DEFUN ("x-select-font", Fx_select_font, Sx_select_font, 0, 2, 0,
       doc: /* Read a font name using a W32 font selection dialog.
Return fontconfig style font string corresponding to the selection.

If FRAME is omitted or nil, it defaults to the selected frame.
If EXCLUDE-PROPORTIONAL is non-nil, exclude proportional fonts
in the font selection dialog. */)
  (Lisp_Object frame, Lisp_Object exclude_proportional)
{
  struct frame *f = decode_window_system_frame (frame);
  CHOOSEFONT cf;
  LOGFONT lf;
  TEXTMETRIC tm;
  HDC hdc;
  HANDLE oldobj;
  char buf[100];

  memset (&cf, 0, sizeof (cf));
  memset (&lf, 0, sizeof (lf));

  cf.lStructSize = sizeof (cf);
  cf.hwndOwner = FRAME_W32_WINDOW (f);
  cf.Flags = CF_FORCEFONTEXIST | CF_SCREENFONTS | CF_NOVERTFONTS;

  /* If exclude_proportional is non-nil, limit the selection to
     monospaced fonts.  */
  if (!NILP (exclude_proportional))
    cf.Flags |= CF_FIXEDPITCHONLY;

  cf.lpLogFont = &lf;

  /* Initialize as much of the font details as we can from the current
     default font.  */
  hdc = GetDC (FRAME_W32_WINDOW (f));
  oldobj = SelectObject (hdc, FONT_HANDLE (FRAME_FONT (f)));
  GetTextFace (hdc, LF_FACESIZE, lf.lfFaceName);
  if (GetTextMetrics (hdc, &tm))
    {
      lf.lfHeight = tm.tmInternalLeading - tm.tmHeight;
      lf.lfWeight = tm.tmWeight;
      lf.lfItalic = tm.tmItalic;
      lf.lfUnderline = tm.tmUnderlined;
      lf.lfStrikeOut = tm.tmStruckOut;
      lf.lfCharSet = tm.tmCharSet;
      cf.Flags |= CF_INITTOLOGFONTSTRUCT;
    }
  SelectObject (hdc, oldobj);
  ReleaseDC (FRAME_W32_WINDOW (f), hdc);

  if (!ChooseFont (&cf)
      || logfont_to_fcname (&lf, cf.iPointSize, buf, 100) < 0)
    return Qnil;

  return DECODE_SYSTEM (build_string (buf));
}

static const char *const w32font_booleans [] = {
  NULL,
};

static const char *const w32font_non_booleans [] = {
  ":script",
  ":antialias",
  ":style",
  NULL,
};

static void
w32font_filter_properties (Lisp_Object font, Lisp_Object alist)
{
  font_filter_properties (font, alist, w32font_booleans, w32font_non_booleans);
}

struct font_driver w32font_driver =
  {
    LISP_INITIALLY_ZERO, /* Qgdi */
    false, /* case insensitive */
    w32font_get_cache,
    w32font_list,
    w32font_match,
    w32font_list_family,
    NULL, /* free_entity */
    w32font_open,
    w32font_close,
    NULL, /* prepare_face */
    NULL, /* done_face */
    w32font_has_char,
    w32font_encode_char,
    w32font_text_extents,
    w32font_draw,
    NULL, /* get_bitmap */
    NULL, /* free_bitmap */
    NULL, /* anchor_point */
    NULL, /* otf_capability */
    NULL, /* otf_drive */
    NULL, /* start_for_frame */
    NULL, /* end_for_frame */
    NULL, /* shape */
    NULL, /* check */
    NULL, /* get_variation_glyphs */
    w32font_filter_properties,
    NULL, /* cached_font_ok */
  };


/* Initialize state that does not change between invocations. This is only
   called when Emacs is dumped.  */
void
syms_of_w32font (void)
{
  DEFSYM (Qgdi, "gdi");
  DEFSYM (Quniscribe, "uniscribe");
  DEFSYM (QCformat, ":format");

  /* Generic font families.  */
  DEFSYM (Qmonospace, "monospace");
  DEFSYM (Qserif, "serif");
  DEFSYM (Qsansserif, "sansserif");
  DEFSYM (Qscript, "script");
  DEFSYM (Qdecorative, "decorative");
  /* Aliases.  */
  DEFSYM (Qsans_serif, "sans_serif");
  DEFSYM (Qsans, "sans");
  DEFSYM (Qmono, "mono");

  /* Fake foundries.  */
  DEFSYM (Qraster, "raster");
  DEFSYM (Qoutline, "outline");
  DEFSYM (Qunknown, "unknown");

  /* Antialiasing.  */
  DEFSYM (Qstandard, "standard");
  DEFSYM (Qsubpixel, "subpixel");
  DEFSYM (Qnatural, "natural");

  /* Languages  */
  DEFSYM (Qzh, "zh");

  /* Scripts  */
  DEFSYM (Qlatin, "latin");
  DEFSYM (Qgreek, "greek");
  DEFSYM (Qcoptic, "coptic");
  DEFSYM (Qcyrillic, "cyrillic");
  DEFSYM (Qarmenian, "armenian");
  DEFSYM (Qhebrew, "hebrew");
  DEFSYM (Qvai, "vai");
  DEFSYM (Qarabic, "arabic");
  DEFSYM (Qsyriac, "syriac");
  DEFSYM (Qnko, "nko");
  DEFSYM (Qthaana, "thaana");
  DEFSYM (Qdevanagari, "devanagari");
  DEFSYM (Qbengali, "bengali");
  DEFSYM (Qgurmukhi, "gurmukhi");
  DEFSYM (Qgujarati, "gujarati");
  DEFSYM (Qoriya, "oriya");
  DEFSYM (Qtamil, "tamil");
  DEFSYM (Qtelugu, "telugu");
  DEFSYM (Qkannada, "kannada");
  DEFSYM (Qmalayalam, "malayalam");
  DEFSYM (Qsinhala, "sinhala");
  DEFSYM (Qthai, "thai");
  DEFSYM (Qlao, "lao");
  DEFSYM (Qtibetan, "tibetan");
  DEFSYM (Qmyanmar, "myanmar");
  DEFSYM (Qgeorgian, "georgian");
  DEFSYM (Qhangul, "hangul");
  DEFSYM (Qethiopic, "ethiopic");
  DEFSYM (Qcherokee, "cherokee");
  DEFSYM (Qcanadian_aboriginal, "canadian-aboriginal");
  DEFSYM (Qogham, "ogham");
  DEFSYM (Qrunic, "runic");
  DEFSYM (Qkhmer, "khmer");
  DEFSYM (Qmongolian, "mongolian");
  DEFSYM (Qbraille, "braille");
  DEFSYM (Qhan, "han");
  DEFSYM (Qideographic_description, "ideographic-description");
  DEFSYM (Qcjk_misc, "cjk-misc");
  DEFSYM (Qkana, "kana");
  DEFSYM (Qbopomofo, "bopomofo");
  DEFSYM (Qkanbun, "kanbun");
  DEFSYM (Qyi, "yi");
  DEFSYM (Qbyzantine_musical_symbol, "byzantine-musical-symbol");
  DEFSYM (Qmusical_symbol, "musical-symbol");
  DEFSYM (Qmathematical_bold, "mathematical-bold");
  DEFSYM (Qmathematical_italic, "mathematical-italic");
  DEFSYM (Qmathematical_bold_italic, "mathematical-bold-italic");
  DEFSYM (Qmathematical_script, "mathematical-script");
  DEFSYM (Qmathematical_bold_script, "mathematical-bold-script");
  DEFSYM (Qmathematical_fraktur, "mathematical-fraktur");
  DEFSYM (Qmathematical_double_struck, "mathematical-double-struck");
  DEFSYM (Qmathematical_bold_fraktur, "mathematical-bold-fraktur");
  DEFSYM (Qmathematical_sans_serif, "mathematical-sans-serif");
  DEFSYM (Qmathematical_sans_serif_bold, "mathematical-sans-serif-bold");
  DEFSYM (Qmathematical_sans_serif_italic, "mathematical-sans-serif-italic");
  DEFSYM (Qmathematical_sans_serif_bold_italic, "mathematical-sans-serif-bold-italic");
  DEFSYM (Qmathematical_monospace, "mathematical-monospace");
  DEFSYM (Qcham, "cham");
  DEFSYM (Qphonetic, "phonetic");
  DEFSYM (Qbalinese, "balinese");
  DEFSYM (Qbuginese, "buginese");
  DEFSYM (Qbuhid, "buhid");
  DEFSYM (Qcuneiform, "cuneiform");
  DEFSYM (Qcypriot, "cypriot");
  DEFSYM (Qdeseret, "deseret");
  DEFSYM (Qglagolitic, "glagolitic");
  DEFSYM (Qgothic, "gothic");
  DEFSYM (Qhanunoo, "hanunoo");
  DEFSYM (Qkharoshthi, "kharoshthi");
  DEFSYM (Qlimbu, "limbu");
  DEFSYM (Qlinear_b, "linear_b");
  DEFSYM (Qold_italic, "old_italic");
  DEFSYM (Qold_persian, "old_persian");
  DEFSYM (Qosmanya, "osmanya");
  DEFSYM (Qphags_pa, "phags-pa");
  DEFSYM (Qphoenician, "phoenician");
  DEFSYM (Qshavian, "shavian");
  DEFSYM (Qsyloti_nagri, "syloti_nagri");
  DEFSYM (Qtagalog, "tagalog");
  DEFSYM (Qtagbanwa, "tagbanwa");
  DEFSYM (Qtai_le, "tai_le");
  DEFSYM (Qtifinagh, "tifinagh");
  DEFSYM (Qugaritic, "ugaritic");
  DEFSYM (Qlycian, "lycian");
  DEFSYM (Qcarian, "carian");
  DEFSYM (Qlydian, "lydian");
  DEFSYM (Qdomino_tile, "domino-tile");
  DEFSYM (Qmahjong_tile, "mahjong-tile");
  DEFSYM (Qtai_xuan_jing_symbol, "tai-xuan-jing-symbol");
  DEFSYM (Qcounting_rod_numeral, "counting-rod-numeral");
  DEFSYM (Qancient_symbol, "ancient-symbol");
  DEFSYM (Qphaistos_disc, "phaistos-disc");
  DEFSYM (Qancient_greek_number, "ancient-greek-number");
  DEFSYM (Qsundanese, "sundanese");
  DEFSYM (Qlepcha, "lepcha");
  DEFSYM (Qol_chiki, "ol-chiki");
  DEFSYM (Qsaurashtra, "saurashtra");
  DEFSYM (Qkayah_li, "kayah-li");
  DEFSYM (Qrejang, "rejang");

  /* W32 font encodings.  */
  DEFVAR_LISP ("w32-charset-info-alist",
               Vw32_charset_info_alist,
               doc: /* Alist linking Emacs character sets to Windows fonts and codepages.
Each entry should be of the form:

   (CHARSET_NAME . (WINDOWS_CHARSET . CODEPAGE))

where CHARSET_NAME is a string used in font names to identify the charset,
WINDOWS_CHARSET is a symbol that can be one of:

  w32-charset-ansi, w32-charset-default, w32-charset-symbol,
  w32-charset-shiftjis, w32-charset-hangeul, w32-charset-gb2312,
  w32-charset-chinesebig5, w32-charset-johab, w32-charset-hebrew,
  w32-charset-arabic, w32-charset-greek, w32-charset-turkish,
  w32-charset-vietnamese, w32-charset-thai, w32-charset-easteurope,
  w32-charset-russian, w32-charset-mac, w32-charset-baltic,
  or w32-charset-oem.

CODEPAGE should be an integer specifying the codepage that should be used
to display the character set, t to do no translation and output as Unicode,
or nil to do no translation and output as 8 bit (or multibyte on far-east
versions of Windows) characters.  */);
  Vw32_charset_info_alist = Qnil;

  DEFSYM (Qw32_charset_ansi, "w32-charset-ansi");
  DEFSYM (Qw32_charset_symbol, "w32-charset-symbol");
  DEFSYM (Qw32_charset_default, "w32-charset-default");
  DEFSYM (Qw32_charset_shiftjis, "w32-charset-shiftjis");
  DEFSYM (Qw32_charset_hangeul, "w32-charset-hangeul");
  DEFSYM (Qw32_charset_chinesebig5, "w32-charset-chinesebig5");
  DEFSYM (Qw32_charset_gb2312, "w32-charset-gb2312");
  DEFSYM (Qw32_charset_oem, "w32-charset-oem");
  DEFSYM (Qw32_charset_johab, "w32-charset-johab");
  DEFSYM (Qw32_charset_easteurope, "w32-charset-easteurope");
  DEFSYM (Qw32_charset_turkish, "w32-charset-turkish");
  DEFSYM (Qw32_charset_baltic, "w32-charset-baltic");
  DEFSYM (Qw32_charset_russian, "w32-charset-russian");
  DEFSYM (Qw32_charset_arabic, "w32-charset-arabic");
  DEFSYM (Qw32_charset_greek, "w32-charset-greek");
  DEFSYM (Qw32_charset_hebrew, "w32-charset-hebrew");
  DEFSYM (Qw32_charset_vietnamese, "w32-charset-vietnamese");
  DEFSYM (Qw32_charset_thai, "w32-charset-thai");
  DEFSYM (Qw32_charset_mac, "w32-charset-mac");

  defsubr (&Sx_select_font);

  w32font_driver.type = Qgdi;
  register_font_driver (&w32font_driver, NULL);
}

void
globals_of_w32font (void)
{
#ifdef WINDOWSNT
  g_b_init_get_outline_metrics_w = 0;
  g_b_init_get_text_metrics_w = 0;
  g_b_init_get_glyph_outline_w = 0;
  g_b_init_get_char_width_32_w = 0;
#endif
}

debug log:

solving 4d15cff ...
found 4d15cff in https://git.savannah.gnu.org/cgit/emacs.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).