forked from Kitware/VTK
-
Notifications
You must be signed in to change notification settings - Fork 0
/
hpdf_fontdef_tt.c
2275 lines (1736 loc) · 65.8 KB
/
hpdf_fontdef_tt.c
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
/*
* << Haru Free PDF Library >> -- hpdf_fontdef_tt.c
*
* URL: http://libharu.org
*
* Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>
* Copyright (c) 2007-2009 Antony Dovgal <tony@daylessday.org>
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
* It is provided "as is" without express or implied warranty.
*
* 2006.08.24 fixed for composite glyph description.
*/
#include "hpdf_conf.h"
#include "hpdf_utils.h"
#include "hpdf_fontdef.h"
#define HPDF_TTF_MAX_MEM_SIZ 10000
#define HPDF_REQUIRED_TAGS_COUNT 13
static const char * const REQUIRED_TAGS[HPDF_REQUIRED_TAGS_COUNT] = {
"OS/2",
"cmap",
"cvt ",
"fpgm",
"glyf",
"head",
"hhea",
"hmtx",
"loca",
"maxp",
"name",
"post",
"prep"
};
static void
FreeFunc (HPDF_FontDef fontdef);
static HPDF_STATUS
LoadFontData (HPDF_FontDef fontdef,
HPDF_Stream stream,
HPDF_BOOL embedding,
HPDF_UINT offset);
static HPDF_STATUS
LoadFontData2 (HPDF_FontDef fontdef,
HPDF_Stream stream,
HPDF_UINT index,
HPDF_BOOL embedding);
static void
InitAttr (HPDF_FontDef fontdef);
static HPDF_STATUS
GetUINT32 (HPDF_Stream stream,
HPDF_UINT32 *value);
static HPDF_STATUS
GetUINT16 (HPDF_Stream stream,
HPDF_UINT16 *value);
static HPDF_STATUS
GetINT16 (HPDF_Stream stream,
HPDF_INT16 *value);
static HPDF_STATUS
WriteUINT32 (HPDF_Stream stream,
HPDF_UINT32 value);
static HPDF_STATUS
WriteUINT16 (HPDF_Stream stream,
HPDF_UINT16 value);
static HPDF_STATUS
WriteINT16 (HPDF_Stream stream,
HPDF_INT16 value);
static void
UINT32Swap (HPDF_UINT32 *value);
static void
UINT16Swap (HPDF_UINT16 *value);
static void
INT16Swap (HPDF_INT16 *value);
static HPDF_STATUS
LoadTTFTable (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseHead (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseMaxp (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseHhea (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseCMap (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseCMAP_format0 (HPDF_FontDef fontdef,
HPDF_UINT32 offset);
static HPDF_STATUS
ParseCMAP_format4 (HPDF_FontDef fontdef,
HPDF_UINT32 offset);
static HPDF_STATUS
ParseHmtx (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseLoca (HPDF_FontDef fontdef);
static HPDF_STATUS
LoadUnicodeName (HPDF_Stream stream,
HPDF_UINT offset,
HPDF_UINT len,
char *buf);
static HPDF_STATUS
ParseName (HPDF_FontDef fontdef);
static HPDF_STATUS
ParseOS2 (HPDF_FontDef fontdef);
static HPDF_TTFTable*
FindTable (HPDF_FontDef fontdef,
const char *tag);
static void
CleanFunc (HPDF_FontDef fontdef);
static HPDF_STATUS
CheckCompositGryph (HPDF_FontDef fontdef,
HPDF_UINT16 gid);
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
static void
FreeFunc (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_PTRACE ((" HPDF_TTFontDef_FreeFunc\n"));
if (attr) {
InitAttr (fontdef);
HPDF_FreeMem (fontdef->mmgr, attr);
}
}
static void
CleanFunc (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_MemSet (attr->glyph_tbl.flgs, 0,
sizeof (HPDF_BYTE) * attr->num_glyphs);
attr->glyph_tbl.flgs[0] = 1;
}
static void
InitAttr (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
if (attr) {
if (attr->char_set)
HPDF_FreeMem (fontdef->mmgr, attr->char_set);
if (attr->h_metric)
HPDF_FreeMem (fontdef->mmgr, attr->h_metric);
if (attr->name_tbl.name_records)
HPDF_FreeMem (fontdef->mmgr, attr->name_tbl.name_records);
if (attr->cmap.end_count)
HPDF_FreeMem (fontdef->mmgr, attr->cmap.end_count);
if (attr->cmap.start_count)
HPDF_FreeMem (fontdef->mmgr, attr->cmap.start_count);
if (attr->cmap.id_delta)
HPDF_FreeMem (fontdef->mmgr, attr->cmap.id_delta);
if (attr->cmap.id_range_offset)
HPDF_FreeMem (fontdef->mmgr, attr->cmap.id_range_offset);
if (attr->cmap.glyph_id_array)
HPDF_FreeMem (fontdef->mmgr, attr->cmap.glyph_id_array);
if (attr->offset_tbl.table)
HPDF_FreeMem (fontdef->mmgr, attr->offset_tbl.table);
if (attr->glyph_tbl.flgs)
HPDF_FreeMem (fontdef->mmgr, attr->glyph_tbl.flgs);
if (attr->glyph_tbl.offsets)
HPDF_FreeMem (fontdef->mmgr, attr->glyph_tbl.offsets);
if (attr->stream)
HPDF_Stream_Free (attr->stream);
}
}
HPDF_FontDef
HPDF_TTFontDef_New (HPDF_MMgr mmgr)
{
HPDF_FontDef fontdef;
HPDF_TTFontDefAttr fontdef_attr;
HPDF_PTRACE ((" HPDF_TTFontDef_New\n"));
if (!mmgr)
return NULL;
fontdef = HPDF_GetMem (mmgr, sizeof(HPDF_FontDef_Rec));
if (!fontdef)
return NULL;
HPDF_MemSet (fontdef, 0, sizeof(HPDF_FontDef_Rec));
fontdef->sig_bytes = HPDF_FONTDEF_SIG_BYTES;
fontdef->mmgr = mmgr;
fontdef->error = mmgr->error;
fontdef->type = HPDF_FONTDEF_TYPE_TRUETYPE;
fontdef->clean_fn = CleanFunc;
fontdef->free_fn = FreeFunc;
fontdef_attr = HPDF_GetMem (mmgr, sizeof(HPDF_TTFontDefAttr_Rec));
if (!fontdef_attr) {
HPDF_FreeMem (fontdef->mmgr, fontdef);
return NULL;
}
fontdef->attr = fontdef_attr;
HPDF_MemSet ((HPDF_BYTE *)fontdef_attr, 0, sizeof(HPDF_TTFontDefAttr_Rec));
fontdef->flags = HPDF_FONT_STD_CHARSET;
return fontdef;
}
HPDF_FontDef
HPDF_TTFontDef_Load (HPDF_MMgr mmgr,
HPDF_Stream stream,
HPDF_BOOL embedding)
{
HPDF_STATUS ret;
HPDF_FontDef fontdef;
HPDF_PTRACE ((" HPDF_TTFontDef_Load\n"));
fontdef = HPDF_TTFontDef_New (mmgr);
if (!fontdef) {
HPDF_Stream_Free (stream);
return NULL;
}
ret = LoadFontData (fontdef, stream, embedding, 0);
if (ret != HPDF_OK) {
HPDF_FontDef_Free (fontdef);
return NULL;
}
return fontdef;
}
HPDF_FontDef
HPDF_TTFontDef_Load2 (HPDF_MMgr mmgr,
HPDF_Stream stream,
HPDF_UINT index,
HPDF_BOOL embedding)
{
HPDF_STATUS ret;
HPDF_FontDef fontdef;
HPDF_PTRACE ((" HPDF_TTFontDef_Load\n"));
fontdef = HPDF_TTFontDef_New (mmgr);
if (!fontdef) {
HPDF_Stream_Free (stream);
return NULL;
}
ret = LoadFontData2 (fontdef, stream, index, embedding);
if (ret != HPDF_OK) {
HPDF_FontDef_Free (fontdef);
return NULL;
}
return fontdef;
}
#ifdef HPDF_TTF_DEBUG
static void
DumpTable (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_Stream stream;
HPDF_UINT i;
for (i = 0; i < HPDF_REQUIRED_TAGS_COUNT; i++) {
char fname[9];
HPDF_TTFTable *tbl = FindTable (fontdef, REQUIRED_TAGS[i]);
if (!tbl) {
HPDF_PTRACE ((" ERR: cannot seek %s\n", fname));
return;
}
HPDF_MemSet (fname, 0, 9);
HPDF_MemCpy (fname, REQUIRED_TAGS[i], 4);
HPDF_MemCpy (fname + 4, ".dat", 4);
HPDF_PTRACE ((" %s open\n", fname));
if (HPDF_MemCmp(fname, "OS/2", 4) == 0)
fname[2] = '_';
stream = HPDF_FileWriter_New (fontdef->mmgr, fname);
if (!stream) {
HPDF_PTRACE ((" ERR: cannot open %s\n", fname));
} else {
HPDF_STATUS ret;
HPDF_UINT tbl_len = tbl->length;
ret = HPDF_Stream_Seek (attr->stream, tbl->offset, HPDF_SEEK_SET);
if (ret != HPDF_OK) {
HPDF_PTRACE ((" ERR: cannot seek \n"));
HPDF_Stream_Free (stream);
return;
}
for (;;) {
HPDF_BYTE buf[HPDF_STREAM_BUF_SIZ];
HPDF_UINT len = HPDF_STREAM_BUF_SIZ;
if (len > tbl_len)
len = tbl_len;
HPDF_Stream_Read (attr->stream, buf, &len);
if (len <= 0)
break;
ret = HPDF_Stream_Write (stream, buf, len);
if (ret != HPDF_OK) {
HPDF_PTRACE ((" ERR: cannot write\n"));
break;
}
tbl_len -= len;
if (tbl_len == 0)
break;
}
HPDF_Stream_Free (stream);
}
}
}
#endif
static HPDF_STATUS
LoadFontData (HPDF_FontDef fontdef,
HPDF_Stream stream,
HPDF_BOOL embedding,
HPDF_UINT offset)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_STATUS ret;
HPDF_TTFTable *tbl;
HPDF_PTRACE ((" HPDF_TTFontDef_LoadFontData\n"));
attr->stream = stream;
attr->embedding = embedding;
if ((ret = HPDF_Stream_Seek (stream, offset, HPDF_SEEK_SET)) != HPDF_OK)
return ret;
if ((ret = LoadTTFTable (fontdef)) != HPDF_OK)
return ret;
#ifdef HPDF_DUMP_FONTDATA
DumpTable (fontdef);
#endif /* HPDF_DUMP_FONTDATA */
if ((ret = ParseHead (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseMaxp (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseHhea (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseCMap (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseHmtx (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseLoca (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseName (fontdef)) != HPDF_OK)
return ret;
if ((ret = ParseOS2 (fontdef)) != HPDF_OK)
return ret;
tbl = FindTable (fontdef, "glyf");
if (!tbl)
return HPDF_SetError (fontdef->error, HPDF_TTF_MISSING_TABLE, 4);
attr->glyph_tbl.base_offset = tbl->offset;
fontdef->cap_height =
(HPDF_UINT16)HPDF_TTFontDef_GetCharBBox (fontdef, (HPDF_UINT16)'H').top;
fontdef->x_height =
(HPDF_UINT16)HPDF_TTFontDef_GetCharBBox (fontdef, (HPDF_UINT16)'x').top;
fontdef->missing_width = (HPDF_INT16)((HPDF_UINT32)attr->h_metric[0].advance_width * 1000 /
attr->header.units_per_em);
HPDF_PTRACE ((" fontdef->cap_height=%d\n", fontdef->cap_height));
HPDF_PTRACE ((" fontdef->x_height=%d\n", fontdef->x_height));
HPDF_PTRACE ((" fontdef->missing_width=%d\n", fontdef->missing_width));
if (!embedding) {
HPDF_Stream_Free (attr->stream);
attr->stream = NULL;
}
return HPDF_OK;
}
static HPDF_STATUS
LoadFontData2 (HPDF_FontDef fontdef,
HPDF_Stream stream,
HPDF_UINT index,
HPDF_BOOL embedding)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_STATUS ret;
HPDF_BYTE tag[4];
HPDF_UINT32 num_fonts;
HPDF_UINT32 offset;
HPDF_UINT size;
HPDF_PTRACE ((" HPDF_TTFontDef_LoadFontData2\n"));
attr->stream = stream;
attr->embedding = embedding;
ret = HPDF_Stream_Seek (stream, 0, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
size = 4;
if ((ret = HPDF_Stream_Read (stream, tag, &size)) != HPDF_OK)
return ret;
if (HPDF_MemCmp (tag, (HPDF_BYTE *)"ttcf", 4) != 0)
return HPDF_SetError (fontdef->error, HPDF_INVALID_TTC_FILE, 0);
if ((ret = HPDF_Stream_Seek (stream, 8, HPDF_SEEK_SET)) != HPDF_OK)
return ret;
if ((ret = GetUINT32 (stream, &num_fonts)) != HPDF_OK)
return ret;
HPDF_PTRACE((" HPDF_TTFontDef_LoadFontData2 num_fonts=%u\n",
(HPDF_UINT)num_fonts));
if (index >= num_fonts)
return HPDF_SetError (fontdef->error, HPDF_INVALID_TTC_INDEX, 0);
/* read offset table for target font and set stream positioning to offset
* value.
*/
if ((ret = HPDF_Stream_Seek (stream, 12 + index * 4, HPDF_SEEK_SET)) !=
HPDF_OK)
return ret;
if ((ret = GetUINT32 (stream, &offset)) != HPDF_OK)
return ret;
return LoadFontData (fontdef, stream, embedding, offset);
}
HPDF_Box
HPDF_TTFontDef_GetCharBBox (HPDF_FontDef fontdef,
HPDF_UINT16 unicode)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_UINT16 gid = HPDF_TTFontDef_GetGlyphid(fontdef, unicode);
HPDF_STATUS ret;
HPDF_Box bbox = HPDF_ToBox(0, 0, 0, 0);
HPDF_INT16 i;
HPDF_INT m;
if (gid == 0) {
HPDF_PTRACE ((" GetCharHeight cannot get gid char=0x%04x\n", unicode));
return bbox;
}
if (attr->header.index_to_loc_format == 0)
m = 2;
else
m = 1;
ret = HPDF_Stream_Seek (attr->stream, attr->glyph_tbl.base_offset +
attr->glyph_tbl.offsets[gid] * m + 2, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return bbox;
ret += GetINT16 (attr->stream, &i);
bbox.left = (HPDF_REAL)((HPDF_INT32)i * 1000 / attr->header.units_per_em);
ret += GetINT16 (attr->stream, &i);
bbox.bottom = (HPDF_REAL)((HPDF_INT32)i * 1000 / attr->header.units_per_em);
ret += GetINT16 (attr->stream, &i);
bbox.right = (HPDF_REAL)((HPDF_INT32)i * 1000 / attr->header.units_per_em);
ret += GetINT16 (attr->stream, &i);
bbox.top = (HPDF_REAL)((HPDF_INT32)i * 1000 / attr->header.units_per_em);
if (ret != HPDF_OK)
return HPDF_ToBox(0, 0, 0, 0);
HPDF_PTRACE((" PdfTTFontDef_GetCharBBox char=0x%04X, "
"box=[%f,%f,%f,%f]\n", unicode, bbox.left, bbox.bottom, bbox.right,
bbox.top));
return bbox;
}
static HPDF_STATUS
GetUINT32 (HPDF_Stream stream,
HPDF_UINT32 *value)
{
HPDF_STATUS ret;
HPDF_UINT size = sizeof (HPDF_UINT32);
ret = HPDF_Stream_Read (stream, (HPDF_BYTE *)value, &size);
if (ret != HPDF_OK) {
*value = 0;
return ret;
}
UINT32Swap (value);
return HPDF_OK;
}
static HPDF_STATUS
GetUINT16 (HPDF_Stream stream,
HPDF_UINT16 *value)
{
HPDF_STATUS ret;
HPDF_UINT size = sizeof (HPDF_UINT16);
ret = HPDF_Stream_Read (stream, (HPDF_BYTE *)value, &size);
if (ret != HPDF_OK) {
*value = 0;
return ret;
}
UINT16Swap (value);
return HPDF_OK;
}
static HPDF_STATUS
GetINT16 (HPDF_Stream stream,
HPDF_INT16 *value)
{
HPDF_STATUS ret;
HPDF_UINT size = sizeof (HPDF_INT16);
ret = HPDF_Stream_Read (stream, (HPDF_BYTE *)value, &size);
if (ret != HPDF_OK) {
*value = 0;
return ret;
}
INT16Swap (value);
return HPDF_OK;
}
static HPDF_STATUS
WriteUINT32 (HPDF_Stream stream,
HPDF_UINT32 value)
{
HPDF_STATUS ret;
HPDF_UINT32 tmp = value;
UINT32Swap (&tmp);
ret = HPDF_Stream_Write (stream, (HPDF_BYTE *)&tmp, sizeof(tmp));
if (ret != HPDF_OK)
return ret;
return HPDF_OK;
}
static HPDF_STATUS
WriteUINT16 (HPDF_Stream stream,
HPDF_UINT16 value)
{
HPDF_STATUS ret;
HPDF_UINT16 tmp = value;
UINT16Swap (&tmp);
ret = HPDF_Stream_Write (stream, (HPDF_BYTE *)&tmp, sizeof(tmp));
if (ret != HPDF_OK)
return ret;
return HPDF_OK;
}
static HPDF_STATUS
WriteINT16 (HPDF_Stream stream,
HPDF_INT16 value)
{
HPDF_STATUS ret;
HPDF_INT16 tmp = value;
INT16Swap (&tmp);
ret = HPDF_Stream_Write (stream, (HPDF_BYTE *)&tmp, sizeof(tmp));
if (ret != HPDF_OK)
return ret;
return HPDF_OK;
}
HPDF_STATUS
LoadTTFTable (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_STATUS ret = HPDF_OK;
HPDF_INT i;
HPDF_TTFTable *tbl;
HPDF_PTRACE ((" HPDF_TTFontDef_LoadTTFTable\n"));
ret += GetUINT32 (attr->stream, &attr->offset_tbl.sfnt_version);
ret += GetUINT16 (attr->stream, &attr->offset_tbl.num_tables);
ret += GetUINT16 (attr->stream, &attr->offset_tbl.search_range);
ret += GetUINT16 (attr->stream, &attr->offset_tbl.entry_selector);
ret += GetUINT16 (attr->stream, &attr->offset_tbl.range_shift);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
if (attr->offset_tbl.num_tables * sizeof(HPDF_TTFTable) >
HPDF_TTF_MAX_MEM_SIZ)
return HPDF_SetError (fontdef->error, HPDF_TTF_INVALID_FOMAT, 0);
attr->offset_tbl.table = HPDF_GetMem (fontdef->mmgr,
sizeof(HPDF_TTFTable) * attr->offset_tbl.num_tables);
if (!attr->offset_tbl.table)
return HPDF_Error_GetCode (fontdef->error);
tbl = attr->offset_tbl.table;
for (i = 0; i < attr->offset_tbl.num_tables; i++) {
HPDF_UINT siz = 4;
ret += HPDF_Stream_Read (attr->stream, (HPDF_BYTE *)tbl->tag, &siz);
ret += GetUINT32 (attr->stream, &tbl->check_sum);
ret += GetUINT32 (attr->stream, &tbl->offset);
ret += GetUINT32 (attr->stream, &tbl->length);
HPDF_PTRACE((" [%d] tag=[%c%c%c%c] check_sum=%u offset=%u length=%u\n",
i, tbl->tag[0], tbl->tag[1], tbl->tag[2], tbl->tag[3],
(HPDF_UINT)tbl->check_sum, (HPDF_UINT)tbl->offset,
(HPDF_UINT)tbl->length));
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);;
tbl++;
}
return HPDF_OK;
}
static HPDF_STATUS
ParseHead (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_TTFTable *tbl = FindTable (fontdef, "head");
HPDF_STATUS ret;
HPDF_UINT siz;
HPDF_PTRACE ((" HPDF_TTFontDef_ParseHead\n"));
if (!tbl)
return HPDF_SetError (fontdef->error, HPDF_TTF_MISSING_TABLE, 5);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
siz = 4;
ret += HPDF_Stream_Read (attr->stream,
(HPDF_BYTE *)&attr->header.version_number, &siz);
ret += GetUINT32 (attr->stream, &attr->header.font_revision);
ret += GetUINT32 (attr->stream, &attr->header.check_sum_adjustment);
ret += GetUINT32 (attr->stream, &attr->header.magic_number);
ret += GetUINT16 (attr->stream, &attr->header.flags);
ret += GetUINT16 (attr->stream, &attr->header.units_per_em);
siz = 8;
ret += HPDF_Stream_Read (attr->stream, attr->header.created, &siz);
siz = 8;
ret += HPDF_Stream_Read (attr->stream, attr->header.modified, &siz);
ret += GetINT16 (attr->stream, &attr->header.x_min);
ret += GetINT16 (attr->stream, &attr->header.y_min);
ret += GetINT16 (attr->stream, &attr->header.x_max);
ret += GetINT16 (attr->stream, &attr->header.y_max);
ret += GetUINT16 (attr->stream, &attr->header.mac_style);
ret += GetUINT16 (attr->stream, &attr->header.lowest_rec_ppem);
ret += GetINT16 (attr->stream, &attr->header.font_direction_hint);
ret += GetINT16 (attr->stream, &attr->header.index_to_loc_format);
ret += GetINT16 (attr->stream, &attr->header.glyph_data_format);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
fontdef->font_bbox. left = (HPDF_REAL)((HPDF_INT32)attr->header.x_min * 1000 /
attr->header.units_per_em);
fontdef->font_bbox. bottom = (HPDF_REAL)((HPDF_INT32)attr->header.y_min * 1000 /
attr->header.units_per_em);
fontdef->font_bbox. right = (HPDF_REAL)((HPDF_INT32)attr->header.x_max * 1000 /
attr->header.units_per_em);
fontdef->font_bbox. top = (HPDF_REAL)((HPDF_INT32)attr->header.y_max * 1000 /
attr->header.units_per_em);
return HPDF_OK;
}
static HPDF_STATUS
ParseMaxp (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_TTFTable *tbl = FindTable (fontdef, "maxp");
HPDF_STATUS ret;
HPDF_PTRACE ((" HPDF_TTFontDef_ParseMaxp\n"));
if (!tbl)
return HPDF_SetError (fontdef->error, HPDF_TTF_MISSING_TABLE, 9);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset + 4, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret = GetUINT16 (attr->stream, &attr->num_glyphs);
HPDF_PTRACE((" HPDF_TTFontDef_ParseMaxp num_glyphs=%u\n",
attr->num_glyphs));
return ret;
}
static HPDF_STATUS
ParseHhea (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_TTFTable *tbl = FindTable (fontdef, "hhea");
HPDF_STATUS ret;
HPDF_PTRACE ((" HPDF_TTFontDef_ParseHhea\n"));
if (!tbl)
return HPDF_SetError (fontdef->error, HPDF_TTF_MISSING_TABLE, 6);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset + 4, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret += GetINT16 (attr->stream, &fontdef->ascent);
fontdef->ascent = (HPDF_INT16)((HPDF_INT32)fontdef->ascent * 1000 /
attr->header.units_per_em);
ret += GetINT16 (attr->stream, &fontdef->descent);
fontdef->descent = (HPDF_INT16)((HPDF_INT32)fontdef->descent * 1000 /
attr->header.units_per_em);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset + 34, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret = GetUINT16 (attr->stream, &attr->num_h_metric);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
HPDF_PTRACE((" HPDF_TTFontDef_ParseHhea num_h_metric=%u\n",
attr->num_h_metric));
return ret;
}
static HPDF_STATUS
ParseCMap (HPDF_FontDef fontdef)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_TTFTable *tbl = FindTable (fontdef, "cmap");
HPDF_STATUS ret;
HPDF_UINT16 version;
HPDF_UINT16 num_cmap;
HPDF_UINT i;
HPDF_UINT32 ms_unicode_encoding_offset = 0;
HPDF_UINT32 byte_encoding_offset = 0;
HPDF_PTRACE ((" HPDF_TTFontDef_ParseCMap\n"));
if (!tbl)
return HPDF_SetError (fontdef->error, HPDF_TTF_MISSING_TABLE, 1);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret += GetUINT16 (attr->stream, &version);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
if (version != 0)
return HPDF_SetError (fontdef->error, HPDF_TTF_INVALID_FOMAT, 0);
ret += GetUINT16 (attr->stream, &num_cmap);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
for (i = 0; i < num_cmap; i++) {
HPDF_UINT16 platformID;
HPDF_UINT16 encodingID;
HPDF_UINT16 format;
HPDF_UINT32 offset;
HPDF_INT32 save_offset;
ret += GetUINT16 (attr->stream, &platformID);
ret += GetUINT16 (attr->stream, &encodingID);
ret += GetUINT32 (attr->stream, &offset);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
save_offset = HPDF_Stream_Tell (attr->stream);
if (save_offset < 0)
return HPDF_Error_GetCode (fontdef->error);
ret = HPDF_Stream_Seek (attr->stream, tbl->offset + offset,
HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret = GetUINT16 (attr->stream, &format);
if (ret != HPDF_OK)
return ret;
HPDF_PTRACE((" HPDF_TTFontDef_ParseCMap tables[%d] platformID=%u "
"encodingID=%u format=%u offset=%u\n", i, platformID,
encodingID, format, (HPDF_UINT)offset));
/* MS-Unicode-CMAP is used for priority */
if (platformID == 3 && encodingID == 1 && format == 4) {
ms_unicode_encoding_offset = offset;
break;
}
/* Byte-Encoding-CMAP will be used if MS-Unicode-CMAP is not found */
if (platformID == 1 && encodingID ==0 && format == 1)
byte_encoding_offset = offset;
ret = HPDF_Stream_Seek (attr->stream, save_offset, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
}
if (ms_unicode_encoding_offset != 0) {
HPDF_PTRACE((" found microsoft unicode cmap.\n"));
ret = ParseCMAP_format4(fontdef, ms_unicode_encoding_offset +
tbl->offset);
} else if (byte_encoding_offset != 0) {
HPDF_PTRACE((" found byte encoding cmap.\n"));
ret = ParseCMAP_format0(fontdef, byte_encoding_offset + tbl->offset);
} else {
HPDF_PTRACE((" cannot found target cmap.\n"));
return HPDF_SetError (fontdef->error, HPDF_TTF_INVALID_FOMAT, 0);
}
return ret;
}
static HPDF_STATUS
ParseCMAP_format0 (HPDF_FontDef fontdef,
HPDF_UINT32 offset)
{
HPDF_TTFontDefAttr attr = (HPDF_TTFontDefAttr)fontdef->attr;
HPDF_STATUS ret;
HPDF_BYTE array[256];
HPDF_UINT size;
HPDF_UINT16 *parray;
HPDF_UINT i;
HPDF_PTRACE((" ParseCMAP_format0\n"));
ret = HPDF_Stream_Seek (attr->stream, offset, HPDF_SEEK_SET);
if (ret != HPDF_OK)
return ret;
ret += GetUINT16 (attr->stream, &attr->cmap.format);
ret += GetUINT16 (attr->stream, &attr->cmap.length);
ret += GetUINT16 (attr->stream, &attr->cmap.language);
if (ret != HPDF_OK)
return HPDF_Error_GetCode (fontdef->error);
if (attr->cmap.format != 0)
return HPDF_SetError (fontdef->error, HPDF_TTF_INVALID_FOMAT, 0);
size = 256;
ret = HPDF_Stream_Read (attr->stream, array, &size);
if (ret != HPDF_OK)
return ret;
attr->cmap.glyph_id_array_count = 256;
attr->cmap.glyph_id_array = HPDF_GetMem (fontdef->mmgr,
sizeof (HPDF_UINT16) * 256);
if (!attr->cmap.glyph_id_array)
return HPDF_Error_GetCode (fontdef->error);
parray = attr->cmap.glyph_id_array;
for (i = 0; i < 256; i++) {
*parray = attr->cmap.glyph_id_array[i];