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
|
/* cairo - a vector graphics library with display and print output
*
* Copyright © 2002 University of Southern California
* Copyright © 2005 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
* The Original Code is the cairo graphics library.
*
* The Initial Developer of the Original Code is University of Southern
* California.
*
* Contributor(s):
* Carl D. Worth <cworth@cworth.org>
*/
/*
* These definitions are solely for use by the implementation of cairo
* and constitute no kind of standard. If you need any of these
* functions, please drop me a note. Either the library needs new
* functionality, or there's a way to do what you need using the
* existing published interfaces. cworth@cworth.org
*/
#ifndef _CAIROINT_H_
#define _CAIROINT_H_
#if HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef _MSC_VER
#define cairo_public __declspec(dllexport)
#endif
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stddef.h>
#ifdef _MSC_VER
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#include <limits.h>
#include <stdio.h>
#include "cairo.h"
#include <pixman.h>
#include "cairo-compiler-private.h"
#include "cairo-error-private.h"
#if CAIRO_HAS_PDF_SURFACE || \
CAIRO_HAS_PS_SURFACE || \
CAIRO_HAS_SCRIPT_SURFACE || \
CAIRO_HAS_XML_SURFACE
#define CAIRO_HAS_DEFLATE_STREAM 1
#endif
#if CAIRO_HAS_PS_SURFACE || \
CAIRO_HAS_PDF_SURFACE || \
CAIRO_HAS_SVG_SURFACE || \
CAIRO_HAS_WIN32_SURFACE
#define CAIRO_HAS_FONT_SUBSET 1
#endif
#if CAIRO_HAS_PS_SURFACE || \
CAIRO_HAS_PDF_SURFACE || \
CAIRO_HAS_FONT_SUBSET
#define CAIRO_HAS_PDF_OPERATORS 1
#endif
CAIRO_BEGIN_DECLS
#if _WIN32 && !_WIN32_WCE /* Permissions on WinCE? No worries! */
cairo_private FILE *
_cairo_win32_tmpfile (void);
#define tmpfile() _cairo_win32_tmpfile()
#endif
#undef MIN
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#undef MAX
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#if _XOPEN_SOURCE >= 600 || defined (_ISOC99_SOURCE)
#define ISFINITE(x) isfinite (x)
#else
#define ISFINITE(x) ((x) * (x) >= 0.) /* check for NaNs */
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_SQRT2
#define M_SQRT2 1.41421356237309504880
#endif
#ifndef M_SQRT1_2
#define M_SQRT1_2 0.707106781186547524400844362104849039
#endif
#undef ARRAY_LENGTH
#define ARRAY_LENGTH(__array) ((int) (sizeof (__array) / sizeof (__array[0])))
#undef STRINGIFY
#undef STRINGIFY_ARG
#define STRINGIFY(macro_or_string) STRINGIFY_ARG (macro_or_string)
#define STRINGIFY_ARG(contents) #contents
#if defined (__GNUC__)
#define cairo_container_of(ptr, type, member) ({ \
const __typeof__ (((type *) 0)->member) *mptr__ = (ptr); \
(type *) ((char *) mptr__ - offsetof (type, member)); \
})
#else
#define cairo_container_of(ptr, type, member) \
((type *)((char *) (ptr) - (char *) &((type *)0)->member))
#endif
#define ASSERT_NOT_REACHED \
do { \
assert (!"reached"); \
} while (0)
#define COMPILE_TIME_ASSERT1(condition, line) \
typedef int compile_time_assertion_at_line_##line##_failed [(condition)?1:-1]
#define COMPILE_TIME_ASSERT0(condition, line) COMPILE_TIME_ASSERT1(condition, line)
#define COMPILE_TIME_ASSERT(condition) COMPILE_TIME_ASSERT0(condition, __LINE__)
#define CAIRO_ALPHA_IS_CLEAR(alpha) ((alpha) <= ((double)0x00ff / (double)0xffff))
#define CAIRO_ALPHA_SHORT_IS_CLEAR(alpha) ((alpha) <= 0x00ff)
#define CAIRO_ALPHA_IS_OPAQUE(alpha) ((alpha) >= ((double)0xff00 / (double)0xffff))
#define CAIRO_ALPHA_SHORT_IS_OPAQUE(alpha) ((alpha) >= 0xff00)
#define CAIRO_ALPHA_IS_ZERO(alpha) ((alpha) <= 0.0)
#define CAIRO_COLOR_IS_CLEAR(color) CAIRO_ALPHA_SHORT_IS_CLEAR ((color)->alpha_short)
#define CAIRO_COLOR_IS_OPAQUE(color) CAIRO_ALPHA_SHORT_IS_OPAQUE ((color)->alpha_short)
/* Reverse the bits in a byte with 7 operations (no 64-bit):
* Devised by Sean Anderson, July 13, 2001.
* Source: http://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits
*/
#define CAIRO_BITSWAP8(c) ((((c) * 0x0802LU & 0x22110LU) | ((c) * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16)
/* Return the number of 1 bits in mask.
*
* GCC 3.4 supports a "population count" builtin, which on many targets is
* implemented with a single instruction. There is a fallback definition
* in libgcc in case a target does not have one, which should be just as
* good as the open-coded solution below, (which is "HACKMEM 169").
*/
static inline int cairo_const
_cairo_popcount (uint32_t mask)
{
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
return __builtin_popcount (mask);
#else
#ifdef __cplusplus
int y;
#else
register int y;
#endif
y = (mask >> 1) &033333333333;
y = mask - y - ((y >>1) & 033333333333);
return (((y + (y >> 3)) & 030707070707) % 077);
#endif
}
static cairo_always_inline cairo_bool_t
_cairo_is_little_endian (void)
{
static const int i = 1;
return *((char *) &i) == 0x01;
}
#ifdef WORDS_BIGENDIAN
#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) (c)
#else
#define CAIRO_BITSWAP8_IF_LITTLE_ENDIAN(c) CAIRO_BITSWAP8(c)
#endif
#ifdef WORDS_BIGENDIAN
#define cpu_to_be16(v) (v)
#define be16_to_cpu(v) (v)
#define cpu_to_be32(v) (v)
#define be32_to_cpu(v) (v)
#else
static inline uint16_t cairo_const
cpu_to_be16(uint16_t v)
{
return (v << 8) | (v >> 8);
}
static inline uint16_t cairo_const
be16_to_cpu(uint16_t v)
{
return cpu_to_be16 (v);
}
static inline uint32_t cairo_const
cpu_to_be32(uint32_t v)
{
return (v >> 24) | ((v >> 8) & 0xff00) | ((v << 8) & 0xff0000) | (v << 24);
}
static inline uint32_t cairo_const
be32_to_cpu(uint32_t v)
{
return cpu_to_be32 (v);
}
#endif
/* Unaligned big endian access
*/
static inline uint16_t get_unaligned_be16 (const unsigned char *p)
{
return p[0] << 8 | p[1];
}
static inline uint32_t get_unaligned_be32 (const unsigned char *p)
{
return (uint32_t)p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
}
static inline void put_unaligned_be16 (uint16_t v, unsigned char *p)
{
p[0] = (v >> 8) & 0xff;
p[1] = v & 0xff;
}
static inline void put_unaligned_be32 (uint32_t v, unsigned char *p)
{
p[0] = (v >> 24) & 0xff;
p[1] = (v >> 16) & 0xff;
p[2] = (v >> 8) & 0xff;
p[3] = v & 0xff;
}
/* The glibc versions of ispace() and isdigit() are slow in UTF-8 locales.
*/
static inline int cairo_const
_cairo_isspace (int c)
{
return (c == 0x20 || (c >= 0x09 && c <= 0x0d));
}
static inline int cairo_const
_cairo_isdigit (int c)
{
return (c >= '0' && c <= '9');
}
static inline int cairo_const
_cairo_isxdigit (int c)
{
return ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'));
}
static inline int cairo_const
_cairo_isalpha (int c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
#include "cairo-types-private.h"
#include "cairo-cache-private.h"
#include "cairo-reference-count-private.h"
#include "cairo-spans-private.h"
#include "cairo-surface-private.h"
cairo_private void
_cairo_box_from_doubles (cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2);
cairo_private void
_cairo_box_to_doubles (const cairo_box_t *box,
double *x1, double *y1,
double *x2, double *y2);
cairo_private void
_cairo_box_from_rectangle (cairo_box_t *box,
const cairo_rectangle_int_t *rectangle);
cairo_private void
_cairo_box_round_to_rectangle (const cairo_box_t *box,
cairo_rectangle_int_t *rectangle);
cairo_private void
_cairo_box_add_curve_to (cairo_box_t *extents,
const cairo_point_t *a,
const cairo_point_t *b,
const cairo_point_t *c,
const cairo_point_t *d);
cairo_private void
_cairo_boxes_get_extents (const cairo_box_t *boxes,
int num_boxes,
cairo_box_t *extents);
cairo_private extern const cairo_rectangle_int_t _cairo_empty_rectangle;
cairo_private extern const cairo_rectangle_int_t _cairo_unbounded_rectangle;
static inline void
_cairo_unbounded_rectangle_init (cairo_rectangle_int_t *rect)
{
*rect = _cairo_unbounded_rectangle;
}
cairo_private_no_warn cairo_bool_t
_cairo_rectangle_intersect (cairo_rectangle_int_t *dst,
const cairo_rectangle_int_t *src);
static inline cairo_bool_t
_cairo_rectangle_intersects (const cairo_rectangle_int_t *dst,
const cairo_rectangle_int_t *src)
{
return !(src->x >= dst->x + (int) dst->width ||
src->x + (int) src->width <= dst->x ||
src->y >= dst->y + (int) dst->height ||
src->y + (int) src->height <= dst->y);
}
static inline cairo_bool_t
_cairo_rectangle_contains_rectangle (const cairo_rectangle_int_t *a,
const cairo_rectangle_int_t *b)
{
return (a->x <= b->x &&
a->x + (int) a->width >= b->x + (int) b->width &&
a->y <= b->y &&
a->y + (int) a->height >= b->y + (int) b->height);
}
cairo_private void
_cairo_rectangle_int_from_double (cairo_rectangle_int_t *recti,
const cairo_rectangle_t *rectf);
/* Extends the dst rectangle to also contain src.
* If one of the rectangles is empty, the result is undefined
*/
cairo_private void
_cairo_rectangle_union (cairo_rectangle_int_t *dst,
const cairo_rectangle_int_t *src);
cairo_private cairo_bool_t
_cairo_box_intersects_line_segment (const cairo_box_t *box,
cairo_line_t *line) cairo_pure;
cairo_private cairo_bool_t
_cairo_spline_intersects (const cairo_point_t *a,
const cairo_point_t *b,
const cairo_point_t *c,
const cairo_point_t *d,
const cairo_box_t *box) cairo_pure;
typedef struct {
const cairo_user_data_key_t *key;
void *user_data;
cairo_destroy_func_t destroy;
} cairo_user_data_slot_t;
cairo_private void
_cairo_user_data_array_init (cairo_user_data_array_t *array);
cairo_private void
_cairo_user_data_array_fini (cairo_user_data_array_t *array);
cairo_private void *
_cairo_user_data_array_get_data (cairo_user_data_array_t *array,
const cairo_user_data_key_t *key);
cairo_private cairo_status_t
_cairo_user_data_array_set_data (cairo_user_data_array_t *array,
const cairo_user_data_key_t *key,
void *user_data,
cairo_destroy_func_t destroy);
cairo_private cairo_status_t
_cairo_user_data_array_copy (cairo_user_data_array_t *dst,
const cairo_user_data_array_t *src);
cairo_private void
_cairo_user_data_array_foreach (cairo_user_data_array_t *array,
void (*func) (const void *key,
void *elt,
void *closure),
void *closure);
#define _CAIRO_HASH_INIT_VALUE 5381
cairo_private unsigned long
_cairo_hash_string (const char *c);
cairo_private unsigned long
_cairo_hash_bytes (unsigned long hash,
const void *bytes,
unsigned int length);
/* We use bits 24-27 to store phases for subpixel positions */
#define _cairo_scaled_glyph_index(g) ((g)->hash_entry.hash & 0xffffff)
#define _cairo_scaled_glyph_xphase(g) (int)(((g)->hash_entry.hash >> 24) & 3)
#define _cairo_scaled_glyph_yphase(g) (int)(((g)->hash_entry.hash >> 26) & 3)
#define _cairo_scaled_glyph_set_index(g, i) ((g)->hash_entry.hash = (i))
#include "cairo-scaled-font-private.h"
struct _cairo_font_face {
/* hash_entry must be first */
cairo_hash_entry_t hash_entry;
cairo_status_t status;
cairo_reference_count_t ref_count;
cairo_user_data_array_t user_data;
const cairo_font_face_backend_t *backend;
};
cairo_private void
_cairo_default_context_reset_static_data (void);
cairo_private void
_cairo_toy_font_face_reset_static_data (void);
cairo_private void
_cairo_ft_font_reset_static_data (void);
cairo_private void
_cairo_win32_font_reset_static_data (void);
#if CAIRO_HAS_COGL_SURFACE
void
_cairo_cogl_context_reset_static_data (void);
#endif
/* the font backend interface */
struct _cairo_unscaled_font_backend {
cairo_bool_t (*destroy) (void *unscaled_font);
};
/* #cairo_toy_font_face_t - simple family/slant/weight font faces used for
* the built-in font API
*/
typedef struct _cairo_toy_font_face {
cairo_font_face_t base;
const char *family;
cairo_bool_t owns_family;
cairo_font_slant_t slant;
cairo_font_weight_t weight;
cairo_font_face_t *impl_face; /* The non-toy font face this actually uses */
} cairo_toy_font_face_t;
typedef enum _cairo_scaled_glyph_info {
CAIRO_SCALED_GLYPH_INFO_METRICS = (1 << 0),
CAIRO_SCALED_GLYPH_INFO_SURFACE = (1 << 1),
CAIRO_SCALED_GLYPH_INFO_PATH = (1 << 2),
CAIRO_SCALED_GLYPH_INFO_RECORDING_SURFACE = (1 << 3),
CAIRO_SCALED_GLYPH_INFO_COLOR_SURFACE = (1 << 4)
} cairo_scaled_glyph_info_t;
typedef struct _cairo_scaled_font_subset {
cairo_scaled_font_t *scaled_font;
unsigned int font_id;
unsigned int subset_id;
/* Index of glyphs array is subset_glyph_index.
* Value of glyphs array is scaled_font_glyph_index.
*/
unsigned long *glyphs;
char **utf8;
char **glyph_names;
int *to_latin_char;
unsigned long *latin_to_subset_glyph_index;
unsigned int num_glyphs;
cairo_bool_t is_composite;
cairo_bool_t is_scaled;
cairo_bool_t is_latin;
} cairo_scaled_font_subset_t;
struct _cairo_scaled_font_backend {
cairo_font_type_t type;
void
(*fini) (void *scaled_font);
cairo_warn cairo_int_status_t
(*scaled_glyph_init) (void *scaled_font,
cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_glyph_info_t info);
/* A backend only needs to implement this or ucs4_to_index(), not
* both. This allows the backend to do something more sophisticated
* then just converting characters one by one.
*/
cairo_warn cairo_int_status_t
(*text_to_glyphs) (void *scaled_font,
double x,
double y,
const char *utf8,
int utf8_len,
cairo_glyph_t **glyphs,
int *num_glyphs,
cairo_text_cluster_t **clusters,
int *num_clusters,
cairo_text_cluster_flags_t *cluster_flags);
unsigned long
(*ucs4_to_index) (void *scaled_font,
uint32_t ucs4);
/* Read data from a sfnt font table.
* @scaled_font: font
* @tag: 4 byte table name specifying the table to read.
* @offset: offset into the table
* @buffer: buffer to write data into. Caller must ensure there is sufficient space.
* If NULL, return the size of the table in @length.
* @length: If @buffer is NULL, the size of the table will be returned in @length.
* If @buffer is not null, @length specifies the number of bytes to read.
*
* If less than @length bytes are available to read this function
* returns CAIRO_INT_STATUS_UNSUPPORTED. Note that requesting more
* bytes than are available in the table may continue reading data
* from the following table and return success. If this is
* undesirable the caller should first query the table size. If an
* error occurs the output value of @length is undefined.
*
* Returns CAIRO_INT_STATUS_UNSUPPORTED if not a sfnt style font or table not found.
*/
cairo_warn cairo_int_status_t
(*load_truetype_table)(void *scaled_font,
unsigned long tag,
long offset,
unsigned char *buffer,
unsigned long *length);
/* ucs4 is set to -1 if the unicode character could not be found
* for the glyph */
cairo_warn cairo_int_status_t
(*index_to_ucs4)(void *scaled_font,
unsigned long index,
uint32_t *ucs4);
/* Determine if this scaled font differs from the outlines in the font tables.
* eg synthesized bold/italic or a non default variant of a variable font.
*/
cairo_warn cairo_int_status_t
(*is_synthetic)(void *scaled_font,
cairo_bool_t *is_synthetic);
/* For type 1 fonts, return the glyph name for a given glyph index.
* A glyph index and list of glyph names in the Type 1 fonts is provided.
* The function returns the index of the glyph in the list of glyph names.
* @scaled_font: font
* @glyph_names: the names of each glyph in the Type 1 font in the
* order they appear in the CharStrings array
* @num_glyph_names: the number of names in the glyph_names array
* @glyph_index: the given glyph index
* @glyph_array_index: (index into glyph_names) the glyph name corresponding
* to the glyph_index
*/
cairo_warn cairo_int_status_t
(*index_to_glyph_name)(void *scaled_font,
char **glyph_names,
int num_glyph_names,
unsigned long glyph_index,
unsigned long *glyph_array_index);
/* Read data from a PostScript font.
* @scaled_font: font
* @offset: offset into the table
* @buffer: buffer to write data into. Caller must ensure there is sufficient space.
* If NULL, return the size of the table in @length.
* @length: If @buffer is NULL, the size of the table will be returned in @length.
* If @buffer is not null, @length specifies the number of bytes to read.
*
* If less than @length bytes are available to read this function
* returns CAIRO_INT_STATUS_UNSUPPORTED. If an error occurs the
* output value of @length is undefined.
*
* Returns CAIRO_INT_STATUS_UNSUPPORTED if not a Type 1 font.
*/
cairo_warn cairo_int_status_t
(*load_type1_data) (void *scaled_font,
long offset,
unsigned char *buffer,
unsigned long *length);
cairo_bool_t
(*has_color_glyphs) (void *scaled_font);
};
struct _cairo_font_face_backend {
cairo_font_type_t type;
cairo_warn cairo_status_t
(*create_for_toy) (cairo_toy_font_face_t *toy_face,
cairo_font_face_t **font_face);
/* The destroy() function is allowed to resurrect the font face
* by re-referencing. This is needed for the FreeType backend.
*/
cairo_bool_t
(*destroy) (void *font_face);
cairo_warn cairo_status_t
(*scaled_font_create) (void *font_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options,
cairo_scaled_font_t **scaled_font);
cairo_font_face_t *
(*get_implementation) (void *font_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options);
};
extern const cairo_private struct _cairo_font_face_backend _cairo_user_font_face_backend;
/* concrete font backends */
#if CAIRO_HAS_FT_FONT
extern const cairo_private struct _cairo_font_face_backend _cairo_ft_font_face_backend;
#endif
#if CAIRO_HAS_WIN32_FONT
extern const cairo_private struct _cairo_font_face_backend _cairo_win32_font_face_backend;
#endif
#if CAIRO_HAS_QUARTZ_FONT
extern const cairo_private struct _cairo_font_face_backend _cairo_quartz_font_face_backend;
#endif
#define CAIRO_EXTEND_SURFACE_DEFAULT CAIRO_EXTEND_NONE
#define CAIRO_EXTEND_GRADIENT_DEFAULT CAIRO_EXTEND_PAD
#define CAIRO_FILTER_DEFAULT CAIRO_FILTER_GOOD
extern const cairo_private cairo_solid_pattern_t _cairo_pattern_clear;
extern const cairo_private cairo_solid_pattern_t _cairo_pattern_black;
extern const cairo_private cairo_solid_pattern_t _cairo_pattern_white;
struct _cairo_surface_attributes {
cairo_matrix_t matrix;
cairo_extend_t extend;
cairo_filter_t filter;
cairo_bool_t has_component_alpha;
int x_offset;
int y_offset;
void *extra;
};
#define CAIRO_FONT_SLANT_DEFAULT CAIRO_FONT_SLANT_NORMAL
#define CAIRO_FONT_WEIGHT_DEFAULT CAIRO_FONT_WEIGHT_NORMAL
#define CAIRO_WIN32_FONT_FAMILY_DEFAULT "Arial"
#define CAIRO_QUARTZ_FONT_FAMILY_DEFAULT "Helvetica"
#define CAIRO_FT_FONT_FAMILY_DEFAULT ""
#define CAIRO_USER_FONT_FAMILY_DEFAULT "@cairo:"
#if CAIRO_HAS_WIN32_FONT
#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_WIN32_FONT_FAMILY_DEFAULT
#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_win32_font_face_backend
#elif CAIRO_HAS_QUARTZ_FONT
#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_QUARTZ_FONT_FAMILY_DEFAULT
#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_quartz_font_face_backend
#elif CAIRO_HAS_FT_FONT
#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT
#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_ft_font_face_backend
#else
#define CAIRO_FONT_FAMILY_DEFAULT CAIRO_FT_FONT_FAMILY_DEFAULT
#define CAIRO_FONT_FACE_BACKEND_DEFAULT &_cairo_user_font_face_backend
#endif
#define CAIRO_GSTATE_OPERATOR_DEFAULT CAIRO_OPERATOR_OVER
#define CAIRO_GSTATE_TOLERANCE_DEFAULT 0.1
#define CAIRO_GSTATE_FILL_RULE_DEFAULT CAIRO_FILL_RULE_WINDING
#define CAIRO_GSTATE_LINE_WIDTH_DEFAULT 2.0
#define CAIRO_GSTATE_LINE_CAP_DEFAULT CAIRO_LINE_CAP_BUTT
#define CAIRO_GSTATE_LINE_JOIN_DEFAULT CAIRO_LINE_JOIN_MITER
#define CAIRO_GSTATE_MITER_LIMIT_DEFAULT 10.0
#define CAIRO_GSTATE_DEFAULT_FONT_SIZE 10.0
#define CAIRO_SURFACE_RESOLUTION_DEFAULT 72.0
#define CAIRO_SURFACE_FALLBACK_RESOLUTION_DEFAULT 300.0
typedef struct _cairo_stroke_face {
cairo_point_t ccw;
cairo_point_t point;
cairo_point_t cw;
cairo_slope_t dev_vector;
cairo_point_double_t dev_slope;
cairo_point_double_t usr_vector;
double length;
} cairo_stroke_face_t;
/* cairo.c */
static inline double cairo_const
_cairo_restrict_value (double value, double min, double max)
{
if (value < min)
return min;
else if (value > max)
return max;
else
return value;
}
/* C99 round() rounds to the nearest integral value with halfway cases rounded
* away from 0. _cairo_round rounds halfway cases toward positive infinity.
* This matches the rounding behaviour of _cairo_lround. */
static inline double cairo_const
_cairo_round (double r)
{
return floor (r + .5);
}
#if DISABLE_SOME_FLOATING_POINT
cairo_private int
_cairo_lround (double d) cairo_const;
#else
static inline int cairo_const
_cairo_lround (double r)
{
return _cairo_round (r);
}
#endif
cairo_private uint16_t
_cairo_half_from_float (float f) cairo_const;
cairo_private cairo_bool_t
_cairo_operator_bounded_by_mask (cairo_operator_t op) cairo_const;
cairo_private cairo_bool_t
_cairo_operator_bounded_by_source (cairo_operator_t op) cairo_const;
enum {
CAIRO_OPERATOR_BOUND_BY_MASK = 1 << 1,
CAIRO_OPERATOR_BOUND_BY_SOURCE = 1 << 2,
};
cairo_private uint32_t
_cairo_operator_bounded_by_either (cairo_operator_t op) cairo_const;
/* cairo-color.c */
cairo_private const cairo_color_t *
_cairo_stock_color (cairo_stock_t stock) cairo_pure;
#define CAIRO_COLOR_WHITE _cairo_stock_color (CAIRO_STOCK_WHITE)
#define CAIRO_COLOR_BLACK _cairo_stock_color (CAIRO_STOCK_BLACK)
#define CAIRO_COLOR_TRANSPARENT _cairo_stock_color (CAIRO_STOCK_TRANSPARENT)
cairo_private uint16_t
_cairo_color_double_to_short (double d) cairo_const;
cairo_private void
_cairo_color_init_rgba (cairo_color_t *color,
double red, double green, double blue,
double alpha);
cairo_private void
_cairo_color_multiply_alpha (cairo_color_t *color,
double alpha);
cairo_private void
_cairo_color_get_rgba (cairo_color_t *color,
double *red,
double *green,
double *blue,
double *alpha);
cairo_private void
_cairo_color_get_rgba_premultiplied (cairo_color_t *color,
double *red,
double *green,
double *blue,
double *alpha);
cairo_private cairo_bool_t
_cairo_color_equal (const cairo_color_t *color_a,
const cairo_color_t *color_b) cairo_pure;
cairo_private cairo_bool_t
_cairo_color_stop_equal (const cairo_color_stop_t *color_a,
const cairo_color_stop_t *color_b) cairo_pure;
cairo_private cairo_content_t
_cairo_color_get_content (const cairo_color_t *color) cairo_pure;
/* cairo-font-face.c */
extern const cairo_private cairo_font_face_t _cairo_font_face_nil;
extern const cairo_private cairo_font_face_t _cairo_font_face_nil_file_not_found;
cairo_private void
_cairo_font_face_init (cairo_font_face_t *font_face,
const cairo_font_face_backend_t *backend);
cairo_private cairo_bool_t
_cairo_font_face_destroy (void *abstract_face);
cairo_private cairo_status_t
_cairo_font_face_set_error (cairo_font_face_t *font_face,
cairo_status_t status);
cairo_private void
_cairo_unscaled_font_init (cairo_unscaled_font_t *font,
const cairo_unscaled_font_backend_t *backend);
cairo_private_no_warn cairo_unscaled_font_t *
_cairo_unscaled_font_reference (cairo_unscaled_font_t *font);
cairo_private void
_cairo_unscaled_font_destroy (cairo_unscaled_font_t *font);
/* cairo-font-face-twin.c */
cairo_private cairo_font_face_t *
_cairo_font_face_twin_create_fallback (void);
cairo_private cairo_status_t
_cairo_font_face_twin_create_for_toy (cairo_toy_font_face_t *toy_face,
cairo_font_face_t **font_face);
/* cairo-font-face-twin-data.c */
extern const cairo_private int8_t _cairo_twin_outlines[];
extern const cairo_private uint16_t _cairo_twin_charmap[128];
/* cairo-font-options.c */
cairo_private void
_cairo_font_options_init_default (cairo_font_options_t *options);
cairo_private void
_cairo_font_options_init_copy (cairo_font_options_t *options,
const cairo_font_options_t *other);
cairo_private void
_cairo_font_options_fini (cairo_font_options_t *options);
cairo_private void
_cairo_font_options_set_round_glyph_positions (cairo_font_options_t *options,
cairo_round_glyph_positions_t round);
cairo_private cairo_round_glyph_positions_t
_cairo_font_options_get_round_glyph_positions (const cairo_font_options_t *options);
/* cairo-hull.c */
cairo_private cairo_status_t
_cairo_hull_compute (cairo_pen_vertex_t *vertices, int *num_vertices);
/* cairo-lzw.c */
cairo_private unsigned char *
_cairo_lzw_compress (unsigned char *data, unsigned long *size_in_out);
/* cairo-misc.c */
cairo_private cairo_status_t
_cairo_validate_text_clusters (const char *utf8,
int utf8_len,
const cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags);
cairo_private unsigned long
_cairo_string_hash (const char *str, int len);
cairo_private cairo_status_t
_cairo_intern_string (const char **str_inout, int len);
cairo_private void
_cairo_intern_string_reset_static_data (void);
cairo_private const char *
_cairo_get_locale_decimal_point (void);
cairo_private double
_cairo_strtod (const char *nptr, char **endptr);
/* cairo-path-fixed.c */
cairo_private cairo_path_fixed_t *
_cairo_path_fixed_create (void);
cairo_private void
_cairo_path_fixed_init (cairo_path_fixed_t *path);
cairo_private cairo_status_t
_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
const cairo_path_fixed_t *other);
cairo_private void
_cairo_path_fixed_fini (cairo_path_fixed_t *path);
cairo_private void
_cairo_path_fixed_destroy (cairo_path_fixed_t *path);
cairo_private cairo_status_t
_cairo_path_fixed_move_to (cairo_path_fixed_t *path,
cairo_fixed_t x,
cairo_fixed_t y);
cairo_private void
_cairo_path_fixed_new_sub_path (cairo_path_fixed_t *path);
cairo_private cairo_status_t
_cairo_path_fixed_rel_move_to (cairo_path_fixed_t *path,
cairo_fixed_t dx,
cairo_fixed_t dy);
cairo_private cairo_status_t
_cairo_path_fixed_line_to (cairo_path_fixed_t *path,
cairo_fixed_t x,
cairo_fixed_t y);
cairo_private cairo_status_t
_cairo_path_fixed_rel_line_to (cairo_path_fixed_t *path,
cairo_fixed_t dx,
cairo_fixed_t dy);
cairo_private cairo_status_t
_cairo_path_fixed_curve_to (cairo_path_fixed_t *path,
cairo_fixed_t x0, cairo_fixed_t y0,
cairo_fixed_t x1, cairo_fixed_t y1,
cairo_fixed_t x2, cairo_fixed_t y2);
cairo_private cairo_status_t
_cairo_path_fixed_rel_curve_to (cairo_path_fixed_t *path,
cairo_fixed_t dx0, cairo_fixed_t dy0,
cairo_fixed_t dx1, cairo_fixed_t dy1,
cairo_fixed_t dx2, cairo_fixed_t dy2);
cairo_private cairo_status_t
_cairo_path_fixed_close_path (cairo_path_fixed_t *path);
cairo_private cairo_bool_t
_cairo_path_fixed_get_current_point (cairo_path_fixed_t *path,
cairo_fixed_t *x,
cairo_fixed_t *y);
typedef cairo_status_t
(cairo_path_fixed_move_to_func_t) (void *closure,
const cairo_point_t *point);
typedef cairo_status_t
(cairo_path_fixed_line_to_func_t) (void *closure,
const cairo_point_t *point);
typedef cairo_status_t
(cairo_path_fixed_curve_to_func_t) (void *closure,
const cairo_point_t *p0,
const cairo_point_t *p1,
const cairo_point_t *p2);
typedef cairo_status_t
(cairo_path_fixed_close_path_func_t) (void *closure);
cairo_private cairo_status_t
_cairo_path_fixed_interpret (const cairo_path_fixed_t *path,
cairo_path_fixed_move_to_func_t *move_to,
cairo_path_fixed_line_to_func_t *line_to,
cairo_path_fixed_curve_to_func_t *curve_to,
cairo_path_fixed_close_path_func_t *close_path,
void *closure);
cairo_private cairo_status_t
_cairo_path_fixed_interpret_flat (const cairo_path_fixed_t *path,
cairo_path_fixed_move_to_func_t *move_to,
cairo_path_fixed_line_to_func_t *line_to,
cairo_path_fixed_close_path_func_t *close_path,
void *closure,
double tolerance);
cairo_private cairo_bool_t
_cairo_path_bounder_extents (const cairo_path_fixed_t *path,
cairo_box_t *box);
cairo_private cairo_bool_t
_cairo_path_fixed_extents (const cairo_path_fixed_t *path,
cairo_box_t *box);
cairo_private void
_cairo_path_fixed_approximate_clip_extents (const cairo_path_fixed_t *path,
cairo_rectangle_int_t *extents);
cairo_private void
_cairo_path_fixed_approximate_fill_extents (const cairo_path_fixed_t *path,
cairo_rectangle_int_t *extents);
cairo_private void
_cairo_path_fixed_fill_extents (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_rectangle_int_t *extents);
cairo_private void
_cairo_path_fixed_approximate_stroke_extents (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
cairo_bool_t vector,
cairo_rectangle_int_t *extents);
cairo_private cairo_status_t
_cairo_path_fixed_stroke_extents (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_rectangle_int_t *extents);
cairo_private void
_cairo_path_fixed_transform (cairo_path_fixed_t *path,
const cairo_matrix_t *matrix);
cairo_private cairo_bool_t
_cairo_path_fixed_is_box (const cairo_path_fixed_t *path,
cairo_box_t *box);
cairo_private cairo_bool_t
_cairo_path_fixed_is_rectangle (const cairo_path_fixed_t *path,
cairo_box_t *box);
/* cairo-path-in-fill.c */
cairo_private cairo_bool_t
_cairo_path_fixed_in_fill (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
double x,
double y);
/* cairo-path-fill.c */
cairo_private cairo_status_t
_cairo_path_fixed_fill_to_polygon (const cairo_path_fixed_t *path,
double tolerance,
cairo_polygon_t *polygon);
cairo_private cairo_status_t
_cairo_path_fixed_fill_rectilinear_to_polygon (const cairo_path_fixed_t *path,
cairo_antialias_t antialias,
cairo_polygon_t *polygon);
cairo_private cairo_status_t
_cairo_path_fixed_fill_rectilinear_to_boxes (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
cairo_antialias_t antialias,
cairo_boxes_t *boxes);
cairo_private cairo_region_t *
_cairo_path_fixed_fill_rectilinear_to_region (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
const cairo_rectangle_int_t *extents);
cairo_private cairo_status_t
_cairo_path_fixed_fill_to_traps (const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_traps_t *traps);
/* cairo-path-stroke.c */
cairo_private cairo_status_t
_cairo_path_fixed_stroke_to_polygon (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_polygon_t *polygon);
cairo_private cairo_int_status_t
_cairo_path_fixed_stroke_to_tristrip (const cairo_path_fixed_t *path,
const cairo_stroke_style_t*style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_tristrip_t *strip);
cairo_private cairo_status_t
_cairo_path_fixed_stroke_dashed_to_polygon (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_polygon_t *polygon);
cairo_private cairo_int_status_t
_cairo_path_fixed_stroke_rectilinear_to_boxes (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
cairo_antialias_t antialias,
cairo_boxes_t *boxes);
cairo_private cairo_int_status_t
_cairo_path_fixed_stroke_to_traps (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_traps_t *traps);
cairo_private cairo_int_status_t
_cairo_path_fixed_stroke_polygon_to_traps (const cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_traps_t *traps);
cairo_private cairo_status_t
_cairo_path_fixed_stroke_to_shaper (cairo_path_fixed_t *path,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_status_t (*add_triangle) (void *closure,
const cairo_point_t triangle[3]),
cairo_status_t (*add_triangle_fan) (void *closure,
const cairo_point_t *midpt,
const cairo_point_t *points,
int npoints),
cairo_status_t (*add_quad) (void *closure,
const cairo_point_t quad[4]),
void *closure);
/* cairo-scaled-font.c */
cairo_private void
_cairo_scaled_font_freeze_cache (cairo_scaled_font_t *scaled_font);
cairo_private void
_cairo_scaled_font_thaw_cache (cairo_scaled_font_t *scaled_font);
cairo_private void
_cairo_scaled_font_reset_cache (cairo_scaled_font_t *scaled_font);
cairo_private cairo_status_t
_cairo_scaled_font_set_error (cairo_scaled_font_t *scaled_font,
cairo_status_t status);
cairo_private cairo_scaled_font_t *
_cairo_scaled_font_create_in_error (cairo_status_t status);
cairo_private void
_cairo_scaled_font_reset_static_data (void);
cairo_private cairo_status_t
_cairo_scaled_font_register_placeholder_and_unlock_font_map (cairo_scaled_font_t *scaled_font);
cairo_private void
_cairo_scaled_font_unregister_placeholder_and_lock_font_map (cairo_scaled_font_t *scaled_font);
cairo_private cairo_status_t
_cairo_scaled_font_init (cairo_scaled_font_t *scaled_font,
cairo_font_face_t *font_face,
const cairo_matrix_t *font_matrix,
const cairo_matrix_t *ctm,
const cairo_font_options_t *options,
const cairo_scaled_font_backend_t *backend);
cairo_private cairo_status_t
_cairo_scaled_font_set_metrics (cairo_scaled_font_t *scaled_font,
cairo_font_extents_t *fs_metrics);
/* This should only be called on an error path by a scaled_font constructor */
cairo_private void
_cairo_scaled_font_fini (cairo_scaled_font_t *scaled_font);
cairo_private cairo_status_t
_cairo_scaled_font_font_extents (cairo_scaled_font_t *scaled_font,
cairo_font_extents_t *extents);
cairo_private cairo_status_t
_cairo_scaled_font_glyph_device_extents (cairo_scaled_font_t *scaled_font,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_rectangle_int_t *extents,
cairo_bool_t *overlap);
cairo_private cairo_bool_t
_cairo_scaled_font_glyph_approximate_extents (cairo_scaled_font_t *scaled_font,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_rectangle_int_t *extents);
cairo_private cairo_status_t
_cairo_scaled_font_show_glyphs (cairo_scaled_font_t *scaled_font,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_surface_t *surface,
int source_x,
int source_y,
int dest_x,
int dest_y,
unsigned int width,
unsigned int height,
cairo_glyph_t *glyphs,
int num_glyphs,
cairo_region_t *clip_region);
cairo_private cairo_status_t
_cairo_scaled_font_glyph_path (cairo_scaled_font_t *scaled_font,
const cairo_glyph_t *glyphs,
int num_glyphs,
cairo_path_fixed_t *path);
cairo_private void
_cairo_scaled_glyph_set_metrics (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font,
cairo_text_extents_t *fs_metrics);
cairo_private void
_cairo_scaled_glyph_set_surface (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font,
cairo_image_surface_t *surface);
cairo_private void
_cairo_scaled_glyph_set_path (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font,
cairo_path_fixed_t *path);
cairo_private void
_cairo_scaled_glyph_set_recording_surface (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font,
cairo_surface_t *recording_surface);
cairo_private void
_cairo_scaled_glyph_set_color_surface (cairo_scaled_glyph_t *scaled_glyph,
cairo_scaled_font_t *scaled_font,
cairo_image_surface_t *surface);
cairo_private cairo_int_status_t
_cairo_scaled_glyph_lookup (cairo_scaled_font_t *scaled_font,
unsigned long index,
cairo_scaled_glyph_info_t info,
cairo_scaled_glyph_t **scaled_glyph_ret);
cairo_private double
_cairo_scaled_font_get_max_scale (cairo_scaled_font_t *scaled_font);
cairo_private void
_cairo_scaled_font_map_destroy (void);
/* cairo-stroke-style.c */
cairo_private void
_cairo_stroke_style_init (cairo_stroke_style_t *style);
cairo_private cairo_status_t
_cairo_stroke_style_init_copy (cairo_stroke_style_t *style,
const cairo_stroke_style_t *other);
cairo_private void
_cairo_stroke_style_fini (cairo_stroke_style_t *style);
cairo_private void
_cairo_stroke_style_max_distance_from_path (const cairo_stroke_style_t *style,
const cairo_path_fixed_t *path,
const cairo_matrix_t *ctm,
double *dx, double *dy);
cairo_private void
_cairo_stroke_style_max_line_distance_from_path (const cairo_stroke_style_t *style,
const cairo_path_fixed_t *path,
const cairo_matrix_t *ctm,
double *dx, double *dy);
cairo_private void
_cairo_stroke_style_max_join_distance_from_path (const cairo_stroke_style_t *style,
const cairo_path_fixed_t *path,
const cairo_matrix_t *ctm,
double *dx, double *dy);
cairo_private double
_cairo_stroke_style_dash_period (const cairo_stroke_style_t *style);
cairo_private double
_cairo_stroke_style_dash_stroked (const cairo_stroke_style_t *style);
cairo_private cairo_bool_t
_cairo_stroke_style_dash_can_approximate (const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
double tolerance);
cairo_private void
_cairo_stroke_style_dash_approximate (const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
double tolerance,
double *dash_offset,
double *dashes,
unsigned int *num_dashes);
/* cairo-surface.c */
cairo_private cairo_bool_t
_cairo_surface_has_mime_image (cairo_surface_t *surface);
cairo_private cairo_status_t
_cairo_surface_copy_mime_data (cairo_surface_t *dst,
cairo_surface_t *src);
cairo_private_no_warn cairo_int_status_t
_cairo_surface_set_error (cairo_surface_t *surface,
cairo_int_status_t status);
cairo_private void
_cairo_surface_set_resolution (cairo_surface_t *surface,
double x_res,
double y_res);
cairo_private cairo_surface_t *
_cairo_surface_create_for_rectangle_int (cairo_surface_t *target,
const cairo_rectangle_int_t *extents);
cairo_private cairo_surface_t *
_cairo_surface_create_scratch (cairo_surface_t *other,
cairo_content_t content,
int width,
int height,
const cairo_color_t *color);
cairo_private void
_cairo_surface_init (cairo_surface_t *surface,
const cairo_surface_backend_t *backend,
cairo_device_t *device,
cairo_content_t content,
cairo_bool_t is_vector);
cairo_private void
_cairo_surface_set_font_options (cairo_surface_t *surface,
cairo_font_options_t *options);
cairo_private cairo_status_t
_cairo_surface_paint (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_clip_t *clip);
cairo_private cairo_image_surface_t *
_cairo_surface_map_to_image (cairo_surface_t *surface,
const cairo_rectangle_int_t *extents);
cairo_private_no_warn cairo_int_status_t
_cairo_surface_unmap_image (cairo_surface_t *surface,
cairo_image_surface_t *image);
cairo_private cairo_status_t
_cairo_surface_mask (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_surface_fill_stroke (cairo_surface_t *surface,
cairo_operator_t fill_op,
const cairo_pattern_t *fill_source,
cairo_fill_rule_t fill_rule,
double fill_tolerance,
cairo_antialias_t fill_antialias,
cairo_path_fixed_t *path,
cairo_operator_t stroke_op,
const cairo_pattern_t *stroke_source,
const cairo_stroke_style_t *stroke_style,
const cairo_matrix_t *stroke_ctm,
const cairo_matrix_t *stroke_ctm_inverse,
double stroke_tolerance,
cairo_antialias_t stroke_antialias,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_surface_stroke (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
const cairo_stroke_style_t *style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_surface_fill (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_surface_show_text_glyphs (cairo_surface_t *surface,
cairo_operator_t op,
const cairo_pattern_t *source,
const char *utf8,
int utf8_len,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_text_cluster_t *clusters,
int num_clusters,
cairo_text_cluster_flags_t cluster_flags,
cairo_scaled_font_t *scaled_font,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_surface_tag (cairo_surface_t *surface,
cairo_bool_t begin,
const char *tag_name,
const char *attributes);
cairo_private cairo_status_t
_cairo_surface_acquire_source_image (cairo_surface_t *surface,
cairo_image_surface_t **image_out,
void **image_extra);
cairo_private void
_cairo_surface_release_source_image (cairo_surface_t *surface,
cairo_image_surface_t *image,
void *image_extra);
cairo_private cairo_surface_t *
_cairo_surface_snapshot (cairo_surface_t *surface);
cairo_private void
_cairo_surface_attach_snapshot (cairo_surface_t *surface,
cairo_surface_t *snapshot,
cairo_surface_func_t detach_func);
cairo_private cairo_surface_t *
_cairo_surface_has_snapshot (cairo_surface_t *surface,
const cairo_surface_backend_t *backend);
cairo_private void
_cairo_surface_detach_snapshot (cairo_surface_t *snapshot);
cairo_private cairo_status_t
_cairo_surface_begin_modification (cairo_surface_t *surface);
cairo_private_no_warn cairo_bool_t
_cairo_surface_get_extents (cairo_surface_t *surface,
cairo_rectangle_int_t *extents);
cairo_private cairo_bool_t
_cairo_surface_has_device_transform (cairo_surface_t *surface) cairo_pure;
cairo_private void
_cairo_surface_release_device_reference (cairo_surface_t *surface);
/* cairo-image-surface.c */
/* XXX: In cairo 1.2.0 we added a new %CAIRO_FORMAT_RGB16_565 but
* neglected to adjust this macro. The net effect is that it's
* impossible to externally create an image surface with this
* format. This is perhaps a good thing since we also neglected to fix
* up things like cairo_surface_write_to_png() for the new format
* (-Wswitch-enum will tell you where). Is it obvious that format was
* added in haste?
*
* The reason for the new format was to allow the xlib backend to be
* used on X servers with a 565 visual. So the new format did its job
* for that, even without being considered "valid" for the sake of
* things like cairo_image_surface_create().
*
* Since 1.2.0 we ran into the same situation with X servers with BGR
* visuals. This time we invented #cairo_internal_format_t instead,
* (see it for more discussion).
*
* The punchline is that %CAIRO_FORMAT_VALID must not consider any
* internal format to be valid. Also we need to decide if the
* RGB16_565 should be moved to instead be an internal format. If so,
* this macro need not change for it. (We probably will need to leave
* an RGB16_565 value in the header files for the sake of code that
* might have that value in it.)
*
* If we do decide to start fully supporting RGB16_565 as an external
* format, then %CAIRO_FORMAT_VALID needs to be adjusted to include
* it. But that should not happen before all necessary code is fixed
* to support it (at least cairo_surface_write_to_png() and a few spots
* in cairo-xlib-surface.c--again see -Wswitch-enum).
*/
#define CAIRO_FORMAT_VALID(format) ((format) >= CAIRO_FORMAT_ARGB32 && \
(format) <= CAIRO_FORMAT_RGBA128F)
/* pixman-required stride alignment in bytes. */
#define CAIRO_STRIDE_ALIGNMENT (sizeof (uint32_t))
#define CAIRO_STRIDE_FOR_WIDTH_BPP(w,bpp) \
((((bpp)*(w)+7)/8 + CAIRO_STRIDE_ALIGNMENT-1) & -CAIRO_STRIDE_ALIGNMENT)
#define CAIRO_CONTENT_VALID(content) ((content) && \
(((content) & ~(CAIRO_CONTENT_COLOR | \
CAIRO_CONTENT_ALPHA | \
CAIRO_CONTENT_COLOR_ALPHA))\
== 0))
cairo_private int
_cairo_format_bits_per_pixel (cairo_format_t format) cairo_const;
cairo_private cairo_format_t
_cairo_format_from_content (cairo_content_t content) cairo_const;
cairo_private cairo_format_t
_cairo_format_from_pixman_format (pixman_format_code_t pixman_format);
cairo_private cairo_content_t
_cairo_content_from_format (cairo_format_t format) cairo_const;
cairo_private cairo_content_t
_cairo_content_from_pixman_format (pixman_format_code_t pixman_format);
cairo_private cairo_surface_t *
_cairo_image_surface_create_for_pixman_image (pixman_image_t *pixman_image,
pixman_format_code_t pixman_format);
cairo_private pixman_format_code_t
_cairo_format_to_pixman_format_code (cairo_format_t format);
cairo_private cairo_bool_t
_pixman_format_from_masks (cairo_format_masks_t *masks,
pixman_format_code_t *format_ret);
cairo_private cairo_bool_t
_pixman_format_to_masks (pixman_format_code_t pixman_format,
cairo_format_masks_t *masks);
cairo_private void
_cairo_image_scaled_glyph_fini (cairo_scaled_font_t *scaled_font,
cairo_scaled_glyph_t *scaled_glyph);
cairo_private void
_cairo_image_reset_static_data (void);
cairo_private void
_cairo_image_compositor_reset_static_data (void);
cairo_private cairo_surface_t *
_cairo_image_surface_create_with_pixman_format (unsigned char *data,
pixman_format_code_t pixman_format,
int width,
int height,
int stride);
cairo_private cairo_surface_t *
_cairo_image_surface_create_with_content (cairo_content_t content,
int width,
int height);
cairo_private void
_cairo_image_surface_assume_ownership_of_data (cairo_image_surface_t *surface);
cairo_private cairo_image_surface_t *
_cairo_image_surface_coerce (cairo_image_surface_t *surface);
cairo_private cairo_image_surface_t *
_cairo_image_surface_coerce_to_format (cairo_image_surface_t *surface,
cairo_format_t format);
cairo_private cairo_image_transparency_t
_cairo_image_analyze_transparency (cairo_image_surface_t *image);
cairo_private cairo_image_color_t
_cairo_image_analyze_color (cairo_image_surface_t *image);
/* cairo-pen.c */
cairo_private int
_cairo_pen_vertices_needed (double tolerance,
double radius,
const cairo_matrix_t *matrix);
cairo_private cairo_status_t
_cairo_pen_init (cairo_pen_t *pen,
double radius,
double tolerance,
const cairo_matrix_t *ctm);
cairo_private void
_cairo_pen_init_empty (cairo_pen_t *pen);
cairo_private cairo_status_t
_cairo_pen_init_copy (cairo_pen_t *pen, const cairo_pen_t *other);
cairo_private void
_cairo_pen_fini (cairo_pen_t *pen);
cairo_private cairo_status_t
_cairo_pen_add_points (cairo_pen_t *pen, cairo_point_t *point, int num_points);
cairo_private int
_cairo_pen_find_active_cw_vertex_index (const cairo_pen_t *pen,
const cairo_slope_t *slope);
cairo_private int
_cairo_pen_find_active_ccw_vertex_index (const cairo_pen_t *pen,
const cairo_slope_t *slope);
cairo_private void
_cairo_pen_find_active_cw_vertices (const cairo_pen_t *pen,
const cairo_slope_t *in,
const cairo_slope_t *out,
int *start, int *stop);
cairo_private void
_cairo_pen_find_active_ccw_vertices (const cairo_pen_t *pen,
const cairo_slope_t *in,
const cairo_slope_t *out,
int *start, int *stop);
/* cairo-polygon.c */
cairo_private void
_cairo_polygon_init (cairo_polygon_t *polygon,
const cairo_box_t *boxes,
int num_boxes);
cairo_private void
_cairo_polygon_init_with_clip (cairo_polygon_t *polygon,
const cairo_clip_t *clip);
cairo_private cairo_status_t
_cairo_polygon_init_boxes (cairo_polygon_t *polygon,
const cairo_boxes_t *boxes);
cairo_private cairo_status_t
_cairo_polygon_init_box_array (cairo_polygon_t *polygon,
cairo_box_t *boxes,
int num_boxes);
cairo_private void
_cairo_polygon_limit (cairo_polygon_t *polygon,
const cairo_box_t *limits,
int num_limits);
cairo_private void
_cairo_polygon_limit_to_clip (cairo_polygon_t *polygon,
const cairo_clip_t *clip);
cairo_private void
_cairo_polygon_fini (cairo_polygon_t *polygon);
cairo_private_no_warn cairo_status_t
_cairo_polygon_add_line (cairo_polygon_t *polygon,
const cairo_line_t *line,
int top, int bottom,
int dir);
cairo_private_no_warn cairo_status_t
_cairo_polygon_add_external_edge (void *polygon,
const cairo_point_t *p1,
const cairo_point_t *p2);
cairo_private_no_warn cairo_status_t
_cairo_polygon_add_contour (cairo_polygon_t *polygon,
const cairo_contour_t *contour);
cairo_private void
_cairo_polygon_translate (cairo_polygon_t *polygon, int dx, int dy);
cairo_private cairo_status_t
_cairo_polygon_reduce (cairo_polygon_t *polygon,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_polygon_intersect (cairo_polygon_t *a, int winding_a,
cairo_polygon_t *b, int winding_b);
cairo_private cairo_status_t
_cairo_polygon_intersect_with_boxes (cairo_polygon_t *polygon,
cairo_fill_rule_t *winding,
cairo_box_t *boxes,
int num_boxes);
static inline cairo_bool_t
_cairo_polygon_is_empty (const cairo_polygon_t *polygon)
{
return
polygon->num_edges == 0 ||
polygon->extents.p2.x <= polygon->extents.p1.x;
}
#define _cairo_polygon_status(P) ((cairo_polygon_t *) (P))->status
/* cairo-spline.c */
cairo_private cairo_bool_t
_cairo_spline_init (cairo_spline_t *spline,
cairo_spline_add_point_func_t add_point_func,
void *closure,
const cairo_point_t *a, const cairo_point_t *b,
const cairo_point_t *c, const cairo_point_t *d);
cairo_private cairo_status_t
_cairo_spline_decompose (cairo_spline_t *spline, double tolerance);
cairo_private cairo_status_t
_cairo_spline_bound (cairo_spline_add_point_func_t add_point_func,
void *closure,
const cairo_point_t *p0, const cairo_point_t *p1,
const cairo_point_t *p2, const cairo_point_t *p3);
/* cairo-matrix.c */
cairo_private void
_cairo_matrix_get_affine (const cairo_matrix_t *matrix,
double *xx, double *yx,
double *xy, double *yy,
double *x0, double *y0);
cairo_private void
_cairo_matrix_transform_bounding_box (const cairo_matrix_t *matrix,
double *x1, double *y1,
double *x2, double *y2,
cairo_bool_t *is_tight);
cairo_private void
_cairo_matrix_transform_bounding_box_fixed (const cairo_matrix_t *matrix,
cairo_box_t *bbox,
cairo_bool_t *is_tight);
cairo_private cairo_bool_t
_cairo_matrix_is_invertible (const cairo_matrix_t *matrix) cairo_pure;
cairo_private cairo_bool_t
_cairo_matrix_is_scale_0 (const cairo_matrix_t *matrix) cairo_pure;
cairo_private double
_cairo_matrix_compute_determinant (const cairo_matrix_t *matrix) cairo_pure;
cairo_private cairo_status_t
_cairo_matrix_compute_basis_scale_factors (const cairo_matrix_t *matrix,
double *sx, double *sy, int x_major);
static inline cairo_bool_t
_cairo_matrix_is_identity (const cairo_matrix_t *matrix)
{
return (matrix->xx == 1.0 && matrix->yx == 0.0 &&
matrix->xy == 0.0 && matrix->yy == 1.0 &&
matrix->x0 == 0.0 && matrix->y0 == 0.0);
}
static inline cairo_bool_t
_cairo_matrix_is_translation (const cairo_matrix_t *matrix)
{
return (matrix->xx == 1.0 && matrix->yx == 0.0 &&
matrix->xy == 0.0 && matrix->yy == 1.0);
}
static inline cairo_bool_t
_cairo_matrix_is_scale (const cairo_matrix_t *matrix)
{
return matrix->yx == 0.0 && matrix->xy == 0.0;
}
cairo_private cairo_bool_t
_cairo_matrix_is_integer_translation(const cairo_matrix_t *matrix,
int *itx, int *ity);
cairo_private cairo_bool_t
_cairo_matrix_has_unity_scale (const cairo_matrix_t *matrix);
cairo_private cairo_bool_t
_cairo_matrix_is_pixel_exact (const cairo_matrix_t *matrix) cairo_pure;
cairo_private double
_cairo_matrix_transformed_circle_major_axis (const cairo_matrix_t *matrix,
double radius) cairo_pure;
cairo_private cairo_bool_t
_cairo_matrix_is_pixman_translation (const cairo_matrix_t *matrix,
cairo_filter_t filter,
int *out_x_offset,
int *out_y_offset);
cairo_private cairo_status_t
_cairo_matrix_to_pixman_matrix_offset (const cairo_matrix_t *matrix,
cairo_filter_t filter,
double xc,
double yc,
pixman_transform_t *out_transform,
int *out_x_offset,
int *out_y_offset);
cairo_private void
_cairo_debug_print_matrix (FILE *file, const cairo_matrix_t *matrix);
cairo_private void
_cairo_debug_print_rect (FILE *file, const cairo_rectangle_int_t *rect);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_rectilinear_polygon (cairo_traps_t *traps,
const cairo_polygon_t *polygon,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_polygon (cairo_traps_t *traps,
const cairo_polygon_t *polygon,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_traps (cairo_traps_t *traps,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_rectangular_traps (cairo_traps_t *traps,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_boxes (const cairo_boxes_t *in,
cairo_fill_rule_t fill_rule,
cairo_boxes_t *out);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_rectilinear_traps (cairo_traps_t *traps,
cairo_fill_rule_t fill_rule);
cairo_private cairo_status_t
_cairo_bentley_ottmann_tessellate_rectilinear_polygon_to_boxes (const cairo_polygon_t *polygon,
cairo_fill_rule_t fill_rule,
cairo_boxes_t *boxes);
cairo_private void
_cairo_trapezoid_array_translate_and_scale (cairo_trapezoid_t *offset_traps,
cairo_trapezoid_t *src_traps,
int num_traps,
double tx, double ty,
double sx, double sy);
#if CAIRO_HAS_DRM_SURFACE
cairo_private void
_cairo_drm_device_reset_static_data (void);
#endif
cairo_private void
_cairo_clip_reset_static_data (void);
cairo_private void
_cairo_pattern_reset_static_data (void);
/* cairo-unicode.c */
cairo_private int
_cairo_utf8_get_char_validated (const char *p,
uint32_t *unicode);
cairo_private cairo_status_t
_cairo_utf8_to_ucs4 (const char *str,
int len,
uint32_t **result,
int *items_written);
cairo_private int
_cairo_ucs4_to_utf8 (uint32_t unicode,
char *utf8);
cairo_private int
_cairo_ucs4_to_utf16 (uint32_t unicode,
uint16_t *utf16);
#if CAIRO_HAS_WIN32_FONT || CAIRO_HAS_QUARTZ_FONT || CAIRO_HAS_PDF_OPERATORS
# define CAIRO_HAS_UTF8_TO_UTF16 1
#endif
#if CAIRO_HAS_UTF8_TO_UTF16
cairo_private cairo_status_t
_cairo_utf8_to_utf16 (const char *str,
int len,
uint16_t **result,
int *items_written);
#endif
cairo_private void
_cairo_matrix_multiply (cairo_matrix_t *r,
const cairo_matrix_t *a,
const cairo_matrix_t *b);
/* cairo-observer.c */
cairo_private void
_cairo_observers_notify (cairo_list_t *observers, void *arg);
/* Open a file with a UTF-8 filename */
cairo_private cairo_status_t
_cairo_fopen (const char *filename, const char *mode, FILE **file_out);
/* Avoid unnecessary PLT entries. */
slim_hidden_proto (cairo_clip_preserve);
slim_hidden_proto (cairo_close_path);
slim_hidden_proto (cairo_create);
slim_hidden_proto (cairo_curve_to);
slim_hidden_proto (cairo_destroy);
slim_hidden_proto (cairo_fill_preserve);
slim_hidden_proto (cairo_font_face_destroy);
slim_hidden_proto (cairo_font_face_get_user_data);
slim_hidden_proto_no_warn (cairo_font_face_reference);
slim_hidden_proto (cairo_font_face_set_user_data);
slim_hidden_proto (cairo_font_options_equal);
slim_hidden_proto (cairo_font_options_hash);
slim_hidden_proto (cairo_font_options_merge);
slim_hidden_proto (cairo_font_options_set_antialias);
slim_hidden_proto (cairo_font_options_set_hint_metrics);
slim_hidden_proto (cairo_font_options_set_hint_style);
slim_hidden_proto (cairo_font_options_set_subpixel_order);
slim_hidden_proto (cairo_font_options_status);
slim_hidden_proto (cairo_format_stride_for_width);
slim_hidden_proto (cairo_get_current_point);
slim_hidden_proto (cairo_get_line_width);
slim_hidden_proto (cairo_get_matrix);
slim_hidden_proto (cairo_get_scaled_font);
slim_hidden_proto (cairo_get_target);
slim_hidden_proto (cairo_get_tolerance);
slim_hidden_proto (cairo_glyph_allocate);
slim_hidden_proto (cairo_glyph_free);
slim_hidden_proto (cairo_image_surface_create);
slim_hidden_proto (cairo_image_surface_create_for_data);
slim_hidden_proto (cairo_image_surface_get_data);
slim_hidden_proto (cairo_image_surface_get_format);
slim_hidden_proto (cairo_image_surface_get_height);
slim_hidden_proto (cairo_image_surface_get_stride);
slim_hidden_proto (cairo_image_surface_get_width);
slim_hidden_proto (cairo_line_to);
slim_hidden_proto (cairo_mask);
slim_hidden_proto (cairo_matrix_init);
slim_hidden_proto (cairo_matrix_init_identity);
slim_hidden_proto (cairo_matrix_init_rotate);
slim_hidden_proto (cairo_matrix_init_scale);
slim_hidden_proto (cairo_matrix_init_translate);
slim_hidden_proto (cairo_matrix_invert);
slim_hidden_proto (cairo_matrix_multiply);
slim_hidden_proto (cairo_matrix_scale);
slim_hidden_proto (cairo_matrix_transform_distance);
slim_hidden_proto (cairo_matrix_transform_point);
slim_hidden_proto (cairo_matrix_translate);
slim_hidden_proto (cairo_move_to);
slim_hidden_proto (cairo_new_path);
slim_hidden_proto (cairo_paint);
slim_hidden_proto (cairo_pattern_add_color_stop_rgba);
slim_hidden_proto (cairo_pattern_create_for_surface);
slim_hidden_proto (cairo_pattern_create_rgb);
slim_hidden_proto (cairo_pattern_create_rgba);
slim_hidden_proto (cairo_pattern_destroy);
slim_hidden_proto (cairo_pattern_get_extend);
slim_hidden_proto (cairo_mesh_pattern_curve_to);
slim_hidden_proto (cairo_mesh_pattern_get_control_point);
slim_hidden_proto (cairo_mesh_pattern_get_corner_color_rgba);
slim_hidden_proto (cairo_mesh_pattern_get_patch_count);
slim_hidden_proto (cairo_mesh_pattern_get_path);
slim_hidden_proto (cairo_mesh_pattern_line_to);
slim_hidden_proto (cairo_mesh_pattern_move_to);
slim_hidden_proto (cairo_mesh_pattern_set_corner_color_rgba);
slim_hidden_proto_no_warn (cairo_pattern_reference);
slim_hidden_proto (cairo_pattern_set_matrix);
slim_hidden_proto (cairo_pop_group);
slim_hidden_proto (cairo_push_group_with_content);
slim_hidden_proto_no_warn (cairo_path_destroy);
slim_hidden_proto (cairo_recording_surface_create);
slim_hidden_proto (cairo_rel_line_to);
slim_hidden_proto (cairo_restore);
slim_hidden_proto (cairo_save);
slim_hidden_proto (cairo_scale);
slim_hidden_proto (cairo_scaled_font_create);
slim_hidden_proto (cairo_scaled_font_destroy);
slim_hidden_proto (cairo_scaled_font_extents);
slim_hidden_proto (cairo_scaled_font_get_ctm);
slim_hidden_proto (cairo_scaled_font_get_font_face);
slim_hidden_proto (cairo_scaled_font_get_font_matrix);
slim_hidden_proto (cairo_scaled_font_get_font_options);
slim_hidden_proto (cairo_scaled_font_glyph_extents);
slim_hidden_proto_no_warn (cairo_scaled_font_reference);
slim_hidden_proto (cairo_scaled_font_status);
slim_hidden_proto (cairo_scaled_font_get_user_data);
slim_hidden_proto (cairo_scaled_font_set_user_data);
slim_hidden_proto (cairo_scaled_font_text_to_glyphs);
slim_hidden_proto (cairo_set_font_matrix);
slim_hidden_proto (cairo_set_font_options);
slim_hidden_proto (cairo_set_font_size);
slim_hidden_proto (cairo_set_line_cap);
slim_hidden_proto (cairo_set_line_join);
slim_hidden_proto (cairo_set_line_width);
slim_hidden_proto (cairo_set_matrix);
slim_hidden_proto (cairo_set_operator);
slim_hidden_proto (cairo_set_source);
slim_hidden_proto (cairo_set_source_rgb);
slim_hidden_proto (cairo_set_source_surface);
slim_hidden_proto (cairo_set_tolerance);
slim_hidden_proto (cairo_status);
slim_hidden_proto (cairo_stroke);
slim_hidden_proto (cairo_stroke_preserve);
slim_hidden_proto (cairo_surface_copy_page);
slim_hidden_proto (cairo_surface_create_similar_image);
slim_hidden_proto (cairo_surface_destroy);
slim_hidden_proto (cairo_surface_finish);
slim_hidden_proto (cairo_surface_flush);
slim_hidden_proto (cairo_surface_get_device_offset);
slim_hidden_proto (cairo_surface_get_device_scale);
slim_hidden_proto (cairo_surface_get_font_options);
slim_hidden_proto (cairo_surface_get_mime_data);
slim_hidden_proto (cairo_surface_has_show_text_glyphs);
slim_hidden_proto (cairo_surface_mark_dirty);
slim_hidden_proto (cairo_surface_mark_dirty_rectangle);
slim_hidden_proto_no_warn (cairo_surface_reference);
slim_hidden_proto (cairo_surface_set_device_offset);
slim_hidden_proto (cairo_surface_set_device_scale);
slim_hidden_proto (cairo_surface_set_fallback_resolution);
slim_hidden_proto (cairo_surface_set_mime_data);
slim_hidden_proto (cairo_surface_show_page);
slim_hidden_proto (cairo_surface_status);
slim_hidden_proto (cairo_surface_supports_mime_type);
slim_hidden_proto (cairo_text_cluster_allocate);
slim_hidden_proto (cairo_text_cluster_free);
slim_hidden_proto (cairo_toy_font_face_create);
slim_hidden_proto (cairo_toy_font_face_get_slant);
slim_hidden_proto (cairo_toy_font_face_get_weight);
slim_hidden_proto (cairo_translate);
slim_hidden_proto (cairo_transform);
slim_hidden_proto (cairo_user_font_face_create);
slim_hidden_proto (cairo_user_font_face_set_init_func);
slim_hidden_proto (cairo_user_font_face_set_render_glyph_func);
slim_hidden_proto (cairo_user_font_face_set_unicode_to_glyph_func);
slim_hidden_proto (cairo_device_to_user);
slim_hidden_proto (cairo_user_to_device);
slim_hidden_proto (cairo_user_to_device_distance);
slim_hidden_proto (cairo_version_string);
slim_hidden_proto (cairo_region_create);
slim_hidden_proto (cairo_region_create_rectangle);
slim_hidden_proto (cairo_region_create_rectangles);
slim_hidden_proto (cairo_region_copy);
slim_hidden_proto (cairo_region_reference);
slim_hidden_proto (cairo_region_destroy);
slim_hidden_proto (cairo_region_equal);
slim_hidden_proto (cairo_region_status);
slim_hidden_proto (cairo_region_get_extents);
slim_hidden_proto (cairo_region_num_rectangles);
slim_hidden_proto (cairo_region_get_rectangle);
slim_hidden_proto (cairo_region_is_empty);
slim_hidden_proto (cairo_region_contains_rectangle);
slim_hidden_proto (cairo_region_contains_point);
slim_hidden_proto (cairo_region_translate);
slim_hidden_proto (cairo_region_subtract);
slim_hidden_proto (cairo_region_subtract_rectangle);
slim_hidden_proto (cairo_region_intersect);
slim_hidden_proto (cairo_region_intersect_rectangle);
slim_hidden_proto (cairo_region_union);
slim_hidden_proto (cairo_region_union_rectangle);
slim_hidden_proto (cairo_region_xor);
slim_hidden_proto (cairo_region_xor_rectangle);
#if CAIRO_HAS_PNG_FUNCTIONS
slim_hidden_proto (cairo_surface_write_to_png_stream);
#endif
CAIRO_END_DECLS
#include "cairo-mutex-private.h"
#include "cairo-fixed-private.h"
#include "cairo-wideint-private.h"
#include "cairo-malloc-private.h"
#include "cairo-hash-private.h"
#if HAVE_VALGRIND
#include <memcheck.h>
#define VG(x) x
cairo_private void
_cairo_debug_check_image_surface_is_defined (const cairo_surface_t *surface);
#else
#define VG(x)
#define _cairo_debug_check_image_surface_is_defined(X)
#endif
cairo_private void
_cairo_debug_print_path (FILE *stream, const cairo_path_fixed_t *path);
cairo_private void
_cairo_debug_print_polygon (FILE *stream, cairo_polygon_t *polygon);
cairo_private void
_cairo_debug_print_traps (FILE *file, const cairo_traps_t *traps);
cairo_private void
_cairo_debug_print_clip (FILE *stream, const cairo_clip_t *clip);
#if 0
#define TRACE(x) fprintf (stderr, "%s: ", __FILE__), fprintf x
#define TRACE_(x) x
#else
#define TRACE(x)
#define TRACE_(x)
#endif
#endif
|