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[reactos.git] / reactos / lib / 3rdparty / freetype / include / freetype / internal / tttypes.h
1 /***************************************************************************/
2 /* */
3 /* tttypes.h */
4 /* */
5 /* Basic SFNT/TrueType type definitions and interface (specification */
6 /* only). */
7 /* */
8 /* Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007 by */
9 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
10 /* */
11 /* This file is part of the FreeType project, and may only be used, */
12 /* modified, and distributed under the terms of the FreeType project */
13 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
14 /* this file you indicate that you have read the license and */
15 /* understand and accept it fully. */
16 /* */
17 /***************************************************************************/
18
19
20 #ifndef __TTTYPES_H__
21 #define __TTTYPES_H__
22
23
24 #include <ft2build.h>
25 #include FT_TRUETYPE_TABLES_H
26 #include FT_INTERNAL_OBJECTS_H
27
28 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
29 #include FT_MULTIPLE_MASTERS_H
30 #endif
31
32
33 FT_BEGIN_HEADER
34
35
36 /*************************************************************************/
37 /*************************************************************************/
38 /*************************************************************************/
39 /*** ***/
40 /*** ***/
41 /*** REQUIRED TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/
42 /*** ***/
43 /*** ***/
44 /*************************************************************************/
45 /*************************************************************************/
46 /*************************************************************************/
47
48
49 /*************************************************************************/
50 /* */
51 /* <Struct> */
52 /* TTC_HeaderRec */
53 /* */
54 /* <Description> */
55 /* TrueType collection header. This table contains the offsets of */
56 /* the font headers of each distinct TrueType face in the file. */
57 /* */
58 /* <Fields> */
59 /* tag :: Must be `ttc ' to indicate a TrueType collection. */
60 /* */
61 /* version :: The version number. */
62 /* */
63 /* count :: The number of faces in the collection. The */
64 /* specification says this should be an unsigned long, but */
65 /* we use a signed long since we need the value -1 for */
66 /* specific purposes. */
67 /* */
68 /* offsets :: The offsets of the font headers, one per face. */
69 /* */
70 typedef struct TTC_HeaderRec_
71 {
72 FT_ULong tag;
73 FT_Fixed version;
74 FT_Long count;
75 FT_ULong* offsets;
76
77 } TTC_HeaderRec;
78
79
80 /*************************************************************************/
81 /* */
82 /* <Struct> */
83 /* SFNT_HeaderRec */
84 /* */
85 /* <Description> */
86 /* SFNT file format header. */
87 /* */
88 /* <Fields> */
89 /* format_tag :: The font format tag. */
90 /* */
91 /* num_tables :: The number of tables in file. */
92 /* */
93 /* search_range :: Must be `16 * (max power of 2 <= num_tables)'. */
94 /* */
95 /* entry_selector :: Must be log2 of `search_range / 16'. */
96 /* */
97 /* range_shift :: Must be `num_tables * 16 - search_range'. */
98 /* */
99 typedef struct SFNT_HeaderRec_
100 {
101 FT_ULong format_tag;
102 FT_UShort num_tables;
103 FT_UShort search_range;
104 FT_UShort entry_selector;
105 FT_UShort range_shift;
106
107 FT_ULong offset; /* not in file */
108
109 } SFNT_HeaderRec, *SFNT_Header;
110
111
112 /*************************************************************************/
113 /* */
114 /* <Struct> */
115 /* TT_TableRec */
116 /* */
117 /* <Description> */
118 /* This structure describes a given table of a TrueType font. */
119 /* */
120 /* <Fields> */
121 /* Tag :: A four-bytes tag describing the table. */
122 /* */
123 /* CheckSum :: The table checksum. This value can be ignored. */
124 /* */
125 /* Offset :: The offset of the table from the start of the TrueType */
126 /* font in its resource. */
127 /* */
128 /* Length :: The table length (in bytes). */
129 /* */
130 typedef struct TT_TableRec_
131 {
132 FT_ULong Tag; /* table type */
133 FT_ULong CheckSum; /* table checksum */
134 FT_ULong Offset; /* table file offset */
135 FT_ULong Length; /* table length */
136
137 } TT_TableRec, *TT_Table;
138
139
140 /*************************************************************************/
141 /* */
142 /* <Struct> */
143 /* TT_LongMetricsRec */
144 /* */
145 /* <Description> */
146 /* A structure modeling the long metrics of the `hmtx' and `vmtx' */
147 /* TrueType tables. The values are expressed in font units. */
148 /* */
149 /* <Fields> */
150 /* advance :: The advance width or height for the glyph. */
151 /* */
152 /* bearing :: The left-side or top-side bearing for the glyph. */
153 /* */
154 typedef struct TT_LongMetricsRec_
155 {
156 FT_UShort advance;
157 FT_Short bearing;
158
159 } TT_LongMetricsRec, *TT_LongMetrics;
160
161
162 /*************************************************************************/
163 /* */
164 /* <Type> */
165 /* TT_ShortMetrics */
166 /* */
167 /* <Description> */
168 /* A simple type to model the short metrics of the `hmtx' and `vmtx' */
169 /* tables. */
170 /* */
171 typedef FT_Short TT_ShortMetrics;
172
173
174 /*************************************************************************/
175 /* */
176 /* <Struct> */
177 /* TT_NameEntryRec */
178 /* */
179 /* <Description> */
180 /* A structure modeling TrueType name records. Name records are used */
181 /* to store important strings like family name, style name, */
182 /* copyright, etc. in _localized_ versions (i.e., language, encoding, */
183 /* etc). */
184 /* */
185 /* <Fields> */
186 /* platformID :: The ID of the name's encoding platform. */
187 /* */
188 /* encodingID :: The platform-specific ID for the name's encoding. */
189 /* */
190 /* languageID :: The platform-specific ID for the name's language. */
191 /* */
192 /* nameID :: The ID specifying what kind of name this is. */
193 /* */
194 /* stringLength :: The length of the string in bytes. */
195 /* */
196 /* stringOffset :: The offset to the string in the `name' table. */
197 /* */
198 /* string :: A pointer to the string's bytes. Note that these */
199 /* are usually UTF-16 encoded characters. */
200 /* */
201 typedef struct TT_NameEntryRec_
202 {
203 FT_UShort platformID;
204 FT_UShort encodingID;
205 FT_UShort languageID;
206 FT_UShort nameID;
207 FT_UShort stringLength;
208 FT_ULong stringOffset;
209
210 /* this last field is not defined in the spec */
211 /* but used by the FreeType engine */
212
213 FT_Byte* string;
214
215 } TT_NameEntryRec, *TT_NameEntry;
216
217
218 /*************************************************************************/
219 /* */
220 /* <Struct> */
221 /* TT_NameTableRec */
222 /* */
223 /* <Description> */
224 /* A structure modeling the TrueType name table. */
225 /* */
226 /* <Fields> */
227 /* format :: The format of the name table. */
228 /* */
229 /* numNameRecords :: The number of names in table. */
230 /* */
231 /* storageOffset :: The offset of the name table in the `name' */
232 /* TrueType table. */
233 /* */
234 /* names :: An array of name records. */
235 /* */
236 /* stream :: the file's input stream. */
237 /* */
238 typedef struct TT_NameTableRec_
239 {
240 FT_UShort format;
241 FT_UInt numNameRecords;
242 FT_UInt storageOffset;
243 TT_NameEntryRec* names;
244 FT_Stream stream;
245
246 } TT_NameTableRec, *TT_NameTable;
247
248
249 /*************************************************************************/
250 /*************************************************************************/
251 /*************************************************************************/
252 /*** ***/
253 /*** ***/
254 /*** OPTIONAL TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/
255 /*** ***/
256 /*** ***/
257 /*************************************************************************/
258 /*************************************************************************/
259 /*************************************************************************/
260
261
262 /*************************************************************************/
263 /* */
264 /* <Struct> */
265 /* TT_GaspRangeRec */
266 /* */
267 /* <Description> */
268 /* A tiny structure used to model a gasp range according to the */
269 /* TrueType specification. */
270 /* */
271 /* <Fields> */
272 /* maxPPEM :: The maximum ppem value to which `gaspFlag' applies. */
273 /* */
274 /* gaspFlag :: A flag describing the grid-fitting and anti-aliasing */
275 /* modes to be used. */
276 /* */
277 typedef struct TT_GaspRangeRec_
278 {
279 FT_UShort maxPPEM;
280 FT_UShort gaspFlag;
281
282 } TT_GaspRangeRec, *TT_GaspRange;
283
284
285 #define TT_GASP_GRIDFIT 0x01
286 #define TT_GASP_DOGRAY 0x02
287
288
289 /*************************************************************************/
290 /* */
291 /* <Struct> */
292 /* TT_GaspRec */
293 /* */
294 /* <Description> */
295 /* A structure modeling the TrueType `gasp' table used to specify */
296 /* grid-fitting and anti-aliasing behaviour. */
297 /* */
298 /* <Fields> */
299 /* version :: The version number. */
300 /* */
301 /* numRanges :: The number of gasp ranges in table. */
302 /* */
303 /* gaspRanges :: An array of gasp ranges. */
304 /* */
305 typedef struct TT_Gasp_
306 {
307 FT_UShort version;
308 FT_UShort numRanges;
309 TT_GaspRange gaspRanges;
310
311 } TT_GaspRec;
312
313
314 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
315
316 /*************************************************************************/
317 /* */
318 /* <Struct> */
319 /* TT_HdmxEntryRec */
320 /* */
321 /* <Description> */
322 /* A small structure used to model the pre-computed widths of a given */
323 /* size. They are found in the `hdmx' table. */
324 /* */
325 /* <Fields> */
326 /* ppem :: The pixels per EM value at which these metrics apply. */
327 /* */
328 /* max_width :: The maximum advance width for this metric. */
329 /* */
330 /* widths :: An array of widths. Note: These are 8-bit bytes. */
331 /* */
332 typedef struct TT_HdmxEntryRec_
333 {
334 FT_Byte ppem;
335 FT_Byte max_width;
336 FT_Byte* widths;
337
338 } TT_HdmxEntryRec, *TT_HdmxEntry;
339
340
341 /*************************************************************************/
342 /* */
343 /* <Struct> */
344 /* TT_HdmxRec */
345 /* */
346 /* <Description> */
347 /* A structure used to model the `hdmx' table, which contains */
348 /* pre-computed widths for a set of given sizes/dimensions. */
349 /* */
350 /* <Fields> */
351 /* version :: The version number. */
352 /* */
353 /* num_records :: The number of hdmx records. */
354 /* */
355 /* records :: An array of hdmx records. */
356 /* */
357 typedef struct TT_HdmxRec_
358 {
359 FT_UShort version;
360 FT_Short num_records;
361 TT_HdmxEntry records;
362
363 } TT_HdmxRec, *TT_Hdmx;
364
365
366 /*************************************************************************/
367 /* */
368 /* <Struct> */
369 /* TT_Kern0_PairRec */
370 /* */
371 /* <Description> */
372 /* A structure used to model a kerning pair for the kerning table */
373 /* format 0. The engine now loads this table if it finds one in the */
374 /* font file. */
375 /* */
376 /* <Fields> */
377 /* left :: The index of the left glyph in pair. */
378 /* */
379 /* right :: The index of the right glyph in pair. */
380 /* */
381 /* value :: The kerning distance. A positive value spaces the */
382 /* glyphs, a negative one makes them closer. */
383 /* */
384 typedef struct TT_Kern0_PairRec_
385 {
386 FT_UShort left; /* index of left glyph in pair */
387 FT_UShort right; /* index of right glyph in pair */
388 FT_FWord value; /* kerning value */
389
390 } TT_Kern0_PairRec, *TT_Kern0_Pair;
391
392 #endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
393
394
395 /*************************************************************************/
396 /*************************************************************************/
397 /*************************************************************************/
398 /*** ***/
399 /*** ***/
400 /*** EMBEDDED BITMAPS SUPPORT ***/
401 /*** ***/
402 /*** ***/
403 /*************************************************************************/
404 /*************************************************************************/
405 /*************************************************************************/
406
407
408 /*************************************************************************/
409 /* */
410 /* <Struct> */
411 /* TT_SBit_MetricsRec */
412 /* */
413 /* <Description> */
414 /* A structure used to hold the big metrics of a given glyph bitmap */
415 /* in a TrueType or OpenType font. These are usually found in the */
416 /* `EBDT' (Microsoft) or `bloc' (Apple) table. */
417 /* */
418 /* <Fields> */
419 /* height :: The glyph height in pixels. */
420 /* */
421 /* width :: The glyph width in pixels. */
422 /* */
423 /* horiBearingX :: The horizontal left bearing. */
424 /* */
425 /* horiBearingY :: The horizontal top bearing. */
426 /* */
427 /* horiAdvance :: The horizontal advance. */
428 /* */
429 /* vertBearingX :: The vertical left bearing. */
430 /* */
431 /* vertBearingY :: The vertical top bearing. */
432 /* */
433 /* vertAdvance :: The vertical advance. */
434 /* */
435 typedef struct TT_SBit_MetricsRec_
436 {
437 FT_Byte height;
438 FT_Byte width;
439
440 FT_Char horiBearingX;
441 FT_Char horiBearingY;
442 FT_Byte horiAdvance;
443
444 FT_Char vertBearingX;
445 FT_Char vertBearingY;
446 FT_Byte vertAdvance;
447
448 } TT_SBit_MetricsRec, *TT_SBit_Metrics;
449
450
451 /*************************************************************************/
452 /* */
453 /* <Struct> */
454 /* TT_SBit_SmallMetricsRec */
455 /* */
456 /* <Description> */
457 /* A structure used to hold the small metrics of a given glyph bitmap */
458 /* in a TrueType or OpenType font. These are usually found in the */
459 /* `EBDT' (Microsoft) or the `bdat' (Apple) table. */
460 /* */
461 /* <Fields> */
462 /* height :: The glyph height in pixels. */
463 /* */
464 /* width :: The glyph width in pixels. */
465 /* */
466 /* bearingX :: The left-side bearing. */
467 /* */
468 /* bearingY :: The top-side bearing. */
469 /* */
470 /* advance :: The advance width or height. */
471 /* */
472 typedef struct TT_SBit_Small_Metrics_
473 {
474 FT_Byte height;
475 FT_Byte width;
476
477 FT_Char bearingX;
478 FT_Char bearingY;
479 FT_Byte advance;
480
481 } TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics;
482
483
484 /*************************************************************************/
485 /* */
486 /* <Struct> */
487 /* TT_SBit_LineMetricsRec */
488 /* */
489 /* <Description> */
490 /* A structure used to describe the text line metrics of a given */
491 /* bitmap strike, for either a horizontal or vertical layout. */
492 /* */
493 /* <Fields> */
494 /* ascender :: The ascender in pixels. */
495 /* */
496 /* descender :: The descender in pixels. */
497 /* */
498 /* max_width :: The maximum glyph width in pixels. */
499 /* */
500 /* caret_slope_enumerator :: Rise of the caret slope, typically set */
501 /* to 1 for non-italic fonts. */
502 /* */
503 /* caret_slope_denominator :: Rise of the caret slope, typically set */
504 /* to 0 for non-italic fonts. */
505 /* */
506 /* caret_offset :: Offset in pixels to move the caret for */
507 /* proper positioning. */
508 /* */
509 /* min_origin_SB :: Minimum of horiBearingX (resp. */
510 /* vertBearingY). */
511 /* min_advance_SB :: Minimum of */
512 /* */
513 /* horizontal advance - */
514 /* ( horiBearingX + width ) */
515 /* */
516 /* resp. */
517 /* */
518 /* vertical advance - */
519 /* ( vertBearingY + height ) */
520 /* */
521 /* max_before_BL :: Maximum of horiBearingY (resp. */
522 /* vertBearingY). */
523 /* */
524 /* min_after_BL :: Minimum of */
525 /* */
526 /* horiBearingY - height */
527 /* */
528 /* resp. */
529 /* */
530 /* vertBearingX - width */
531 /* */
532 /* pads :: Unused (to make the size of the record */
533 /* a multiple of 32 bits. */
534 /* */
535 typedef struct TT_SBit_LineMetricsRec_
536 {
537 FT_Char ascender;
538 FT_Char descender;
539 FT_Byte max_width;
540 FT_Char caret_slope_numerator;
541 FT_Char caret_slope_denominator;
542 FT_Char caret_offset;
543 FT_Char min_origin_SB;
544 FT_Char min_advance_SB;
545 FT_Char max_before_BL;
546 FT_Char min_after_BL;
547 FT_Char pads[2];
548
549 } TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics;
550
551
552 /*************************************************************************/
553 /* */
554 /* <Struct> */
555 /* TT_SBit_RangeRec */
556 /* */
557 /* <Description> */
558 /* A TrueType/OpenType subIndexTable as defined in the `EBLC' */
559 /* (Microsoft) or `bloc' (Apple) tables. */
560 /* */
561 /* <Fields> */
562 /* first_glyph :: The first glyph index in the range. */
563 /* */
564 /* last_glyph :: The last glyph index in the range. */
565 /* */
566 /* index_format :: The format of index table. Valid values are 1 */
567 /* to 5. */
568 /* */
569 /* image_format :: The format of `EBDT' image data. */
570 /* */
571 /* image_offset :: The offset to image data in `EBDT'. */
572 /* */
573 /* image_size :: For index formats 2 and 5. This is the size in */
574 /* bytes of each glyph bitmap. */
575 /* */
576 /* big_metrics :: For index formats 2 and 5. This is the big */
577 /* metrics for each glyph bitmap. */
578 /* */
579 /* num_glyphs :: For index formats 4 and 5. This is the number of */
580 /* glyphs in the code array. */
581 /* */
582 /* glyph_offsets :: For index formats 1 and 3. */
583 /* */
584 /* glyph_codes :: For index formats 4 and 5. */
585 /* */
586 /* table_offset :: The offset of the index table in the `EBLC' */
587 /* table. Only used during strike loading. */
588 /* */
589 typedef struct TT_SBit_RangeRec
590 {
591 FT_UShort first_glyph;
592 FT_UShort last_glyph;
593
594 FT_UShort index_format;
595 FT_UShort image_format;
596 FT_ULong image_offset;
597
598 FT_ULong image_size;
599 TT_SBit_MetricsRec metrics;
600 FT_ULong num_glyphs;
601
602 FT_ULong* glyph_offsets;
603 FT_UShort* glyph_codes;
604
605 FT_ULong table_offset;
606
607 } TT_SBit_RangeRec, *TT_SBit_Range;
608
609
610 /*************************************************************************/
611 /* */
612 /* <Struct> */
613 /* TT_SBit_StrikeRec */
614 /* */
615 /* <Description> */
616 /* A structure used describe a given bitmap strike in the `EBLC' */
617 /* (Microsoft) or `bloc' (Apple) tables. */
618 /* */
619 /* <Fields> */
620 /* num_index_ranges :: The number of index ranges. */
621 /* */
622 /* index_ranges :: An array of glyph index ranges. */
623 /* */
624 /* color_ref :: Unused. `color_ref' is put in for future */
625 /* enhancements, but these fields are already */
626 /* in use by other platforms (e.g. Newton). */
627 /* For details, please see */
628 /* */
629 /* http://fonts.apple.com/ */
630 /* TTRefMan/RM06/Chap6bloc.html */
631 /* */
632 /* hori :: The line metrics for horizontal layouts. */
633 /* */
634 /* vert :: The line metrics for vertical layouts. */
635 /* */
636 /* start_glyph :: The lowest glyph index for this strike. */
637 /* */
638 /* end_glyph :: The highest glyph index for this strike. */
639 /* */
640 /* x_ppem :: The number of horizontal pixels per EM. */
641 /* */
642 /* y_ppem :: The number of vertical pixels per EM. */
643 /* */
644 /* bit_depth :: The bit depth. Valid values are 1, 2, 4, */
645 /* and 8. */
646 /* */
647 /* flags :: Is this a vertical or horizontal strike? For */
648 /* details, please see */
649 /* */
650 /* http://fonts.apple.com/ */
651 /* TTRefMan/RM06/Chap6bloc.html */
652 /* */
653 typedef struct TT_SBit_StrikeRec_
654 {
655 FT_Int num_ranges;
656 TT_SBit_Range sbit_ranges;
657 FT_ULong ranges_offset;
658
659 FT_ULong color_ref;
660
661 TT_SBit_LineMetricsRec hori;
662 TT_SBit_LineMetricsRec vert;
663
664 FT_UShort start_glyph;
665 FT_UShort end_glyph;
666
667 FT_Byte x_ppem;
668 FT_Byte y_ppem;
669
670 FT_Byte bit_depth;
671 FT_Char flags;
672
673 } TT_SBit_StrikeRec, *TT_SBit_Strike;
674
675
676 /*************************************************************************/
677 /* */
678 /* <Struct> */
679 /* TT_SBit_ComponentRec */
680 /* */
681 /* <Description> */
682 /* A simple structure to describe a compound sbit element. */
683 /* */
684 /* <Fields> */
685 /* glyph_code :: The element's glyph index. */
686 /* */
687 /* x_offset :: The element's left bearing. */
688 /* */
689 /* y_offset :: The element's top bearing. */
690 /* */
691 typedef struct TT_SBit_ComponentRec_
692 {
693 FT_UShort glyph_code;
694 FT_Char x_offset;
695 FT_Char y_offset;
696
697 } TT_SBit_ComponentRec, *TT_SBit_Component;
698
699
700 /*************************************************************************/
701 /* */
702 /* <Struct> */
703 /* TT_SBit_ScaleRec */
704 /* */
705 /* <Description> */
706 /* A structure used describe a given bitmap scaling table, as defined */
707 /* in the `EBSC' table. */
708 /* */
709 /* <Fields> */
710 /* hori :: The horizontal line metrics. */
711 /* */
712 /* vert :: The vertical line metrics. */
713 /* */
714 /* x_ppem :: The number of horizontal pixels per EM. */
715 /* */
716 /* y_ppem :: The number of vertical pixels per EM. */
717 /* */
718 /* x_ppem_substitute :: Substitution x_ppem value. */
719 /* */
720 /* y_ppem_substitute :: Substitution y_ppem value. */
721 /* */
722 typedef struct TT_SBit_ScaleRec_
723 {
724 TT_SBit_LineMetricsRec hori;
725 TT_SBit_LineMetricsRec vert;
726
727 FT_Byte x_ppem;
728 FT_Byte y_ppem;
729
730 FT_Byte x_ppem_substitute;
731 FT_Byte y_ppem_substitute;
732
733 } TT_SBit_ScaleRec, *TT_SBit_Scale;
734
735
736 /*************************************************************************/
737 /*************************************************************************/
738 /*************************************************************************/
739 /*** ***/
740 /*** ***/
741 /*** POSTSCRIPT GLYPH NAMES SUPPORT ***/
742 /*** ***/
743 /*** ***/
744 /*************************************************************************/
745 /*************************************************************************/
746 /*************************************************************************/
747
748
749 /*************************************************************************/
750 /* */
751 /* <Struct> */
752 /* TT_Post_20Rec */
753 /* */
754 /* <Description> */
755 /* Postscript names sub-table, format 2.0. Stores the PS name of */
756 /* each glyph in the font face. */
757 /* */
758 /* <Fields> */
759 /* num_glyphs :: The number of named glyphs in the table. */
760 /* */
761 /* num_names :: The number of PS names stored in the table. */
762 /* */
763 /* glyph_indices :: The indices of the glyphs in the names arrays. */
764 /* */
765 /* glyph_names :: The PS names not in Mac Encoding. */
766 /* */
767 typedef struct TT_Post_20Rec_
768 {
769 FT_UShort num_glyphs;
770 FT_UShort num_names;
771 FT_UShort* glyph_indices;
772 FT_Char** glyph_names;
773
774 } TT_Post_20Rec, *TT_Post_20;
775
776
777 /*************************************************************************/
778 /* */
779 /* <Struct> */
780 /* TT_Post_25Rec */
781 /* */
782 /* <Description> */
783 /* Postscript names sub-table, format 2.5. Stores the PS name of */
784 /* each glyph in the font face. */
785 /* */
786 /* <Fields> */
787 /* num_glyphs :: The number of glyphs in the table. */
788 /* */
789 /* offsets :: An array of signed offsets in a normal Mac */
790 /* Postscript name encoding. */
791 /* */
792 typedef struct TT_Post_25_
793 {
794 FT_UShort num_glyphs;
795 FT_Char* offsets;
796
797 } TT_Post_25Rec, *TT_Post_25;
798
799
800 /*************************************************************************/
801 /* */
802 /* <Struct> */
803 /* TT_Post_NamesRec */
804 /* */
805 /* <Description> */
806 /* Postscript names table, either format 2.0 or 2.5. */
807 /* */
808 /* <Fields> */
809 /* loaded :: A flag to indicate whether the PS names are loaded. */
810 /* */
811 /* format_20 :: The sub-table used for format 2.0. */
812 /* */
813 /* format_25 :: The sub-table used for format 2.5. */
814 /* */
815 typedef struct TT_Post_NamesRec_
816 {
817 FT_Bool loaded;
818
819 union
820 {
821 TT_Post_20Rec format_20;
822 TT_Post_25Rec format_25;
823
824 } names;
825
826 } TT_Post_NamesRec, *TT_Post_Names;
827
828
829 /*************************************************************************/
830 /*************************************************************************/
831 /*************************************************************************/
832 /*** ***/
833 /*** ***/
834 /*** GX VARIATION TABLE SUPPORT ***/
835 /*** ***/
836 /*** ***/
837 /*************************************************************************/
838 /*************************************************************************/
839 /*************************************************************************/
840
841
842 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
843 typedef struct GX_BlendRec_ *GX_Blend;
844 #endif
845
846 /*************************************************************************/
847 /*************************************************************************/
848 /*************************************************************************/
849 /*** ***/
850 /*** ***/
851 /*** EMBEDDED BDF PROPERTIES TABLE SUPPORT ***/
852 /*** ***/
853 /*** ***/
854 /*************************************************************************/
855 /*************************************************************************/
856 /*************************************************************************/
857
858 /*
859 * These types are used to support a `BDF ' table that isn't part of the
860 * official TrueType specification. It is mainly used in SFNT-based
861 * bitmap fonts that were generated from a set of BDF fonts.
862 *
863 * The format of the table is as follows.
864 *
865 * USHORT version `BDF ' table version number, should be 0x0001.
866 * USHORT strikeCount Number of strikes (bitmap sizes) in this table.
867 * ULONG stringTable Offset (from start of BDF table) to string
868 * table.
869 *
870 * This is followed by an array of `strikeCount' descriptors, having the
871 * following format.
872 *
873 * USHORT ppem Vertical pixels per EM for this strike.
874 * USHORT numItems Number of items for this strike (properties and
875 * atoms). Maximum is 255.
876 *
877 * This array in turn is followed by `strikeCount' value sets. Each
878 * `value set' is an array of `numItems' items with the following format.
879 *
880 * ULONG item_name Offset in string table to item name.
881 * USHORT item_type The item type. Possible values are
882 * 0 => string (e.g., COMMENT)
883 * 1 => atom (e.g., FONT or even SIZE)
884 * 2 => int32
885 * 3 => uint32
886 * 0x10 => A flag to indicate a properties. This
887 * is ORed with the above values.
888 * ULONG item_value For strings => Offset into string table without
889 * the corresponding double quotes.
890 * For atoms => Offset into string table.
891 * For integers => Direct value.
892 *
893 * All strings in the string table consist of bytes and are
894 * zero-terminated.
895 *
896 */
897
898 #ifdef TT_CONFIG_OPTION_BDF
899
900 typedef struct TT_BDFRec_
901 {
902 FT_Byte* table;
903 FT_Byte* table_end;
904 FT_Byte* strings;
905 FT_UInt32 strings_size;
906 FT_UInt num_strikes;
907 FT_Bool loaded;
908
909 } TT_BDFRec, *TT_BDF;
910
911 #endif /* TT_CONFIG_OPTION_BDF */
912
913 /*************************************************************************/
914 /*************************************************************************/
915 /*************************************************************************/
916 /*** ***/
917 /*** ***/
918 /*** ORIGINAL TT_FACE CLASS DEFINITION ***/
919 /*** ***/
920 /*** ***/
921 /*************************************************************************/
922 /*************************************************************************/
923 /*************************************************************************/
924
925
926 /*************************************************************************/
927 /* */
928 /* This structure/class is defined here because it is common to the */
929 /* following formats: TTF, OpenType-TT, and OpenType-CFF. */
930 /* */
931 /* Note, however, that the classes TT_Size and TT_GlyphSlot are not */
932 /* shared between font drivers, and are thus defined in `ttobjs.h'. */
933 /* */
934 /*************************************************************************/
935
936
937 /*************************************************************************/
938 /* */
939 /* <Type> */
940 /* TT_Face */
941 /* */
942 /* <Description> */
943 /* A handle to a TrueType face/font object. A TT_Face encapsulates */
944 /* the resolution and scaling independent parts of a TrueType font */
945 /* resource. */
946 /* */
947 /* <Note> */
948 /* The TT_Face structure is also used as a `parent class' for the */
949 /* OpenType-CFF class (T2_Face). */
950 /* */
951 typedef struct TT_FaceRec_* TT_Face;
952
953
954 /* a function type used for the truetype bytecode interpreter hooks */
955 typedef FT_Error
956 (*TT_Interpreter)( void* exec_context );
957
958 /* forward declaration */
959 typedef struct TT_LoaderRec_* TT_Loader;
960
961
962 /*************************************************************************/
963 /* */
964 /* <FuncType> */
965 /* TT_Loader_GotoTableFunc */
966 /* */
967 /* <Description> */
968 /* Seeks a stream to the start of a given TrueType table. */
969 /* */
970 /* <Input> */
971 /* face :: A handle to the target face object. */
972 /* */
973 /* tag :: A 4-byte tag used to name the table. */
974 /* */
975 /* stream :: The input stream. */
976 /* */
977 /* <Output> */
978 /* length :: The length of the table in bytes. Set to 0 if not */
979 /* needed. */
980 /* */
981 /* <Return> */
982 /* FreeType error code. 0 means success. */
983 /* */
984 /* <Note> */
985 /* The stream cursor must be at the font file's origin. */
986 /* */
987 typedef FT_Error
988 (*TT_Loader_GotoTableFunc)( TT_Face face,
989 FT_ULong tag,
990 FT_Stream stream,
991 FT_ULong* length );
992
993
994 /*************************************************************************/
995 /* */
996 /* <FuncType> */
997 /* TT_Loader_StartGlyphFunc */
998 /* */
999 /* <Description> */
1000 /* Seeks a stream to the start of a given glyph element, and opens a */
1001 /* frame for it. */
1002 /* */
1003 /* <Input> */
1004 /* loader :: The current TrueType glyph loader object. */
1005 /* */
1006 /* glyph index :: The index of the glyph to access. */
1007 /* */
1008 /* offset :: The offset of the glyph according to the */
1009 /* `locations' table. */
1010 /* */
1011 /* byte_count :: The size of the frame in bytes. */
1012 /* */
1013 /* <Return> */
1014 /* FreeType error code. 0 means success. */
1015 /* */
1016 /* <Note> */
1017 /* This function is normally equivalent to FT_STREAM_SEEK(offset) */
1018 /* followed by FT_FRAME_ENTER(byte_count) with the loader's stream, */
1019 /* but alternative formats (e.g. compressed ones) might use something */
1020 /* different. */
1021 /* */
1022 typedef FT_Error
1023 (*TT_Loader_StartGlyphFunc)( TT_Loader loader,
1024 FT_UInt glyph_index,
1025 FT_ULong offset,
1026 FT_UInt byte_count );
1027
1028
1029 /*************************************************************************/
1030 /* */
1031 /* <FuncType> */
1032 /* TT_Loader_ReadGlyphFunc */
1033 /* */
1034 /* <Description> */
1035 /* Reads one glyph element (its header, a simple glyph, or a */
1036 /* composite) from the loader's current stream frame. */
1037 /* */
1038 /* <Input> */
1039 /* loader :: The current TrueType glyph loader object. */
1040 /* */
1041 /* <Return> */
1042 /* FreeType error code. 0 means success. */
1043 /* */
1044 typedef FT_Error
1045 (*TT_Loader_ReadGlyphFunc)( TT_Loader loader );
1046
1047
1048 /*************************************************************************/
1049 /* */
1050 /* <FuncType> */
1051 /* TT_Loader_EndGlyphFunc */
1052 /* */
1053 /* <Description> */
1054 /* Closes the current loader stream frame for the glyph. */
1055 /* */
1056 /* <Input> */
1057 /* loader :: The current TrueType glyph loader object. */
1058 /* */
1059 typedef void
1060 (*TT_Loader_EndGlyphFunc)( TT_Loader loader );
1061
1062
1063 /*************************************************************************/
1064 /* */
1065 /* TrueType Face Type */
1066 /* */
1067 /* <Struct> */
1068 /* TT_Face */
1069 /* */
1070 /* <Description> */
1071 /* The TrueType face class. These objects model the resolution and */
1072 /* point-size independent data found in a TrueType font file. */
1073 /* */
1074 /* <Fields> */
1075 /* root :: The base FT_Face structure, managed by the */
1076 /* base layer. */
1077 /* */
1078 /* ttc_header :: The TrueType collection header, used when */
1079 /* the file is a `ttc' rather than a `ttf'. */
1080 /* For ordinary font files, the field */
1081 /* `ttc_header.count' is set to 0. */
1082 /* */
1083 /* format_tag :: The font format tag. */
1084 /* */
1085 /* num_tables :: The number of TrueType tables in this font */
1086 /* file. */
1087 /* */
1088 /* dir_tables :: The directory of TrueType tables for this */
1089 /* font file. */
1090 /* */
1091 /* header :: The font's font header (`head' table). */
1092 /* Read on font opening. */
1093 /* */
1094 /* horizontal :: The font's horizontal header (`hhea' */
1095 /* table). This field also contains the */
1096 /* associated horizontal metrics table */
1097 /* (`hmtx'). */
1098 /* */
1099 /* max_profile :: The font's maximum profile table. Read on */
1100 /* font opening. Note that some maximum */
1101 /* values cannot be taken directly from this */
1102 /* table. We thus define additional fields */
1103 /* below to hold the computed maxima. */
1104 /* */
1105 /* vertical_info :: A boolean which is set when the font file */
1106 /* contains vertical metrics. If not, the */
1107 /* value of the `vertical' field is */
1108 /* undefined. */
1109 /* */
1110 /* vertical :: The font's vertical header (`vhea' table). */
1111 /* This field also contains the associated */
1112 /* vertical metrics table (`vmtx'), if found. */
1113 /* IMPORTANT: The contents of this field is */
1114 /* undefined if the `verticalInfo' field is */
1115 /* unset. */
1116 /* */
1117 /* num_names :: The number of name records within this */
1118 /* TrueType font. */
1119 /* */
1120 /* name_table :: The table of name records (`name'). */
1121 /* */
1122 /* os2 :: The font's OS/2 table (`OS/2'). */
1123 /* */
1124 /* postscript :: The font's PostScript table (`post' */
1125 /* table). The PostScript glyph names are */
1126 /* not loaded by the driver on face opening. */
1127 /* See the `ttpost' module for more details. */
1128 /* */
1129 /* cmap_table :: Address of the face's `cmap' SFNT table */
1130 /* in memory (it's an extracted frame). */
1131 /* */
1132 /* cmap_size :: The size in bytes of the `cmap_table' */
1133 /* described above. */
1134 /* */
1135 /* goto_table :: A function called by each TrueType table */
1136 /* loader to position a stream's cursor to */
1137 /* the start of a given table according to */
1138 /* its tag. It defaults to TT_Goto_Face but */
1139 /* can be different for strange formats (e.g. */
1140 /* Type 42). */
1141 /* */
1142 /* access_glyph_frame :: A function used to access the frame of a */
1143 /* given glyph within the face's font file. */
1144 /* */
1145 /* forget_glyph_frame :: A function used to forget the frame of a */
1146 /* given glyph when all data has been loaded. */
1147 /* */
1148 /* read_glyph_header :: A function used to read a glyph header. */
1149 /* It must be called between an `access' and */
1150 /* `forget'. */
1151 /* */
1152 /* read_simple_glyph :: A function used to read a simple glyph. */
1153 /* It must be called after the header was */
1154 /* read, and before the `forget'. */
1155 /* */
1156 /* read_composite_glyph :: A function used to read a composite glyph. */
1157 /* It must be called after the header was */
1158 /* read, and before the `forget'. */
1159 /* */
1160 /* sfnt :: A pointer to the SFNT service. */
1161 /* */
1162 /* psnames :: A pointer to the PostScript names service. */
1163 /* */
1164 /* hdmx :: The face's horizontal device metrics */
1165 /* (`hdmx' table). This table is optional in */
1166 /* TrueType/OpenType fonts. */
1167 /* */
1168 /* gasp :: The grid-fitting and scaling properties */
1169 /* table (`gasp'). This table is optional in */
1170 /* TrueType/OpenType fonts. */
1171 /* */
1172 /* pclt :: The `pclt' SFNT table. */
1173 /* */
1174 /* num_sbit_strikes :: The number of sbit strikes, i.e., bitmap */
1175 /* sizes, embedded in this font. */
1176 /* */
1177 /* sbit_strikes :: An array of sbit strikes embedded in this */
1178 /* font. This table is optional in a */
1179 /* TrueType/OpenType font. */
1180 /* */
1181 /* num_sbit_scales :: The number of sbit scales for this font. */
1182 /* */
1183 /* sbit_scales :: Array of sbit scales embedded in this */
1184 /* font. This table is optional in a */
1185 /* TrueType/OpenType font. */
1186 /* */
1187 /* postscript_names :: A table used to store the Postscript names */
1188 /* of the glyphs for this font. See the */
1189 /* file `ttconfig.h' for comments on the */
1190 /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES option. */
1191 /* */
1192 /* num_locations :: The number of glyph locations in this */
1193 /* TrueType file. This should be */
1194 /* identical to the number of glyphs. */
1195 /* Ignored for Type 2 fonts. */
1196 /* */
1197 /* glyph_locations :: An array of longs. These are offsets to */
1198 /* glyph data within the `glyf' table. */
1199 /* Ignored for Type 2 font faces. */
1200 /* */
1201 /* glyf_len :: The length of the `glyf' table. Needed */
1202 /* for malformed `loca' tables. */
1203 /* */
1204 /* font_program_size :: Size in bytecodes of the face's font */
1205 /* program. 0 if none defined. Ignored for */
1206 /* Type 2 fonts. */
1207 /* */
1208 /* font_program :: The face's font program (bytecode stream) */
1209 /* executed at load time, also used during */
1210 /* glyph rendering. Comes from the `fpgm' */
1211 /* table. Ignored for Type 2 font fonts. */
1212 /* */
1213 /* cvt_program_size :: The size in bytecodes of the face's cvt */
1214 /* program. Ignored for Type 2 fonts. */
1215 /* */
1216 /* cvt_program :: The face's cvt program (bytecode stream) */
1217 /* executed each time an instance/size is */
1218 /* changed/reset. Comes from the `prep' */
1219 /* table. Ignored for Type 2 fonts. */
1220 /* */
1221 /* cvt_size :: Size of the control value table (in */
1222 /* entries). Ignored for Type 2 fonts. */
1223 /* */
1224 /* cvt :: The face's original control value table. */
1225 /* Coordinates are expressed in unscaled font */
1226 /* units. Comes from the `cvt ' table. */
1227 /* Ignored for Type 2 fonts. */
1228 /* */
1229 /* num_kern_pairs :: The number of kerning pairs present in the */
1230 /* font file. The engine only loads the */
1231 /* first horizontal format 0 kern table it */
1232 /* finds in the font file. Ignored for */
1233 /* Type 2 fonts. */
1234 /* */
1235 /* kern_table_index :: The index of the kerning table in the font */
1236 /* kerning directory. Ignored for Type 2 */
1237 /* fonts. */
1238 /* */
1239 /* interpreter :: A pointer to the TrueType bytecode */
1240 /* interpreters field is also used to hook */
1241 /* the debugger in `ttdebug'. */
1242 /* */
1243 /* unpatented_hinting :: If true, use only unpatented methods in */
1244 /* the bytecode interpreter. */
1245 /* */
1246 /* doblend :: A boolean which is set if the font should */
1247 /* be blended (this is for GX var). */
1248 /* */
1249 /* blend :: Contains the data needed to control GX */
1250 /* variation tables (rather like Multiple */
1251 /* Master data). */
1252 /* */
1253 /* extra :: Reserved for third-party font drivers. */
1254 /* */
1255 /* postscript_name :: The PS name of the font. Used by the */
1256 /* postscript name service. */
1257 /* */
1258 typedef struct TT_FaceRec_
1259 {
1260 FT_FaceRec root;
1261
1262 TTC_HeaderRec ttc_header;
1263
1264 FT_ULong format_tag;
1265 FT_UShort num_tables;
1266 TT_Table dir_tables;
1267
1268 TT_Header header; /* TrueType header table */
1269 TT_HoriHeader horizontal; /* TrueType horizontal header */
1270
1271 TT_MaxProfile max_profile;
1272 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
1273 FT_ULong max_components; /* stubbed to 0 */
1274 #endif
1275
1276 FT_Bool vertical_info;
1277 TT_VertHeader vertical; /* TT Vertical header, if present */
1278
1279 FT_UShort num_names; /* number of name records */
1280 TT_NameTableRec name_table; /* name table */
1281
1282 TT_OS2 os2; /* TrueType OS/2 table */
1283 TT_Postscript postscript; /* TrueType Postscript table */
1284
1285 FT_Byte* cmap_table; /* extracted `cmap' table */
1286 FT_ULong cmap_size;
1287
1288 TT_Loader_GotoTableFunc goto_table;
1289
1290 TT_Loader_StartGlyphFunc access_glyph_frame;
1291 TT_Loader_EndGlyphFunc forget_glyph_frame;
1292 TT_Loader_ReadGlyphFunc read_glyph_header;
1293 TT_Loader_ReadGlyphFunc read_simple_glyph;
1294 TT_Loader_ReadGlyphFunc read_composite_glyph;
1295
1296 /* a typeless pointer to the SFNT_Interface table used to load */
1297 /* the basic TrueType tables in the face object */
1298 void* sfnt;
1299
1300 /* a typeless pointer to the FT_Service_PsCMapsRec table used to */
1301 /* handle glyph names <-> unicode & Mac values */
1302 void* psnames;
1303
1304
1305 /***********************************************************************/
1306 /* */
1307 /* Optional TrueType/OpenType tables */
1308 /* */
1309 /***********************************************************************/
1310
1311 /* horizontal device metrics */
1312 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
1313 TT_HdmxRec hdmx;
1314 #endif
1315
1316 /* grid-fitting and scaling table */
1317 TT_GaspRec gasp; /* the `gasp' table */
1318
1319 /* PCL 5 table */
1320 TT_PCLT pclt;
1321
1322 /* embedded bitmaps support */
1323 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
1324 FT_ULong num_sbit_strikes;
1325 TT_SBit_Strike sbit_strikes;
1326 #endif
1327
1328 FT_ULong num_sbit_scales;
1329 TT_SBit_Scale sbit_scales;
1330
1331 /* postscript names table */
1332 TT_Post_NamesRec postscript_names;
1333
1334
1335 /***********************************************************************/
1336 /* */
1337 /* TrueType-specific fields (ignored by the OTF-Type2 driver) */
1338 /* */
1339 /***********************************************************************/
1340
1341 /* the glyph locations */
1342 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
1343 FT_UShort num_locations_stub;
1344 FT_Long* glyph_locations_stub;
1345 #endif
1346
1347 /* the font program, if any */
1348 FT_ULong font_program_size;
1349 FT_Byte* font_program;
1350
1351 /* the cvt program, if any */
1352 FT_ULong cvt_program_size;
1353 FT_Byte* cvt_program;
1354
1355 /* the original, unscaled, control value table */
1356 FT_ULong cvt_size;
1357 FT_Short* cvt;
1358
1359 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
1360 /* the format 0 kerning table, if any */
1361 FT_Int num_kern_pairs;
1362 FT_Int kern_table_index;
1363 TT_Kern0_Pair kern_pairs;
1364 #endif
1365
1366 /* A pointer to the bytecode interpreter to use. This is also */
1367 /* used to hook the debugger for the `ttdebug' utility. */
1368 TT_Interpreter interpreter;
1369
1370 #ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
1371 /* Use unpatented hinting only. */
1372 FT_Bool unpatented_hinting;
1373 #endif
1374
1375 /***********************************************************************/
1376 /* */
1377 /* Other tables or fields. This is used by derivative formats like */
1378 /* OpenType. */
1379 /* */
1380 /***********************************************************************/
1381
1382 FT_Generic extra;
1383
1384 const char* postscript_name;
1385
1386 /* since version 2.1.8, but was originally placed after */
1387 /* `glyph_locations_stub' */
1388 FT_ULong glyf_len;
1389
1390 /* since version 2.1.8, but was originally placed before `extra' */
1391 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
1392 FT_Bool doblend;
1393 GX_Blend blend;
1394 #endif
1395
1396 /* since version 2.2 */
1397
1398 FT_Byte* horz_metrics;
1399 FT_ULong horz_metrics_size;
1400
1401 FT_Byte* vert_metrics;
1402 FT_ULong vert_metrics_size;
1403
1404 FT_UInt num_locations;
1405 FT_Byte* glyph_locations;
1406
1407 FT_Byte* hdmx_table;
1408 FT_ULong hdmx_table_size;
1409 FT_UInt hdmx_record_count;
1410 FT_ULong hdmx_record_size;
1411 FT_Byte* hdmx_record_sizes;
1412
1413 FT_Byte* sbit_table;
1414 FT_ULong sbit_table_size;
1415 FT_UInt sbit_num_strikes;
1416
1417 FT_Byte* kern_table;
1418 FT_ULong kern_table_size;
1419 FT_UInt num_kern_tables;
1420 FT_UInt32 kern_avail_bits;
1421 FT_UInt32 kern_order_bits;
1422
1423 #ifdef TT_CONFIG_OPTION_BDF
1424 TT_BDFRec bdf;
1425 #endif /* TT_CONFIG_OPTION_BDF */
1426
1427 /* since 2.3.0 */
1428 FT_ULong horz_metrics_offset;
1429 FT_ULong vert_metrics_offset;
1430
1431 } TT_FaceRec;
1432
1433
1434 /*************************************************************************/
1435 /* */
1436 /* <Struct> */
1437 /* TT_GlyphZoneRec */
1438 /* */
1439 /* <Description> */
1440 /* A glyph zone is used to load, scale and hint glyph outline */
1441 /* coordinates. */
1442 /* */
1443 /* <Fields> */
1444 /* memory :: A handle to the memory manager. */
1445 /* */
1446 /* max_points :: The maximal size in points of the zone. */
1447 /* */
1448 /* max_contours :: Max size in links contours of the zone. */
1449 /* */
1450 /* n_points :: The current number of points in the zone. */
1451 /* */
1452 /* n_contours :: The current number of contours in the zone. */
1453 /* */
1454 /* org :: The original glyph coordinates (font */
1455 /* units/scaled). */
1456 /* */
1457 /* cur :: The current glyph coordinates (scaled/hinted). */
1458 /* */
1459 /* tags :: The point control tags. */
1460 /* */
1461 /* contours :: The contours end points. */
1462 /* */
1463 /* first_point :: Offset of the current subglyph's first point. */
1464 /* */
1465 typedef struct TT_GlyphZoneRec_
1466 {
1467 FT_Memory memory;
1468 FT_UShort max_points;
1469 FT_UShort max_contours;
1470 FT_UShort n_points; /* number of points in zone */
1471 FT_Short n_contours; /* number of contours */
1472
1473 FT_Vector* org; /* original point coordinates */
1474 FT_Vector* cur; /* current point coordinates */
1475 FT_Vector* orus; /* original (unscaled) point coordinates */
1476
1477 FT_Byte* tags; /* current touch flags */
1478 FT_UShort* contours; /* contour end points */
1479
1480 FT_UShort first_point; /* offset of first (#0) point */
1481
1482 } TT_GlyphZoneRec, *TT_GlyphZone;
1483
1484
1485 /* handle to execution context */
1486 typedef struct TT_ExecContextRec_* TT_ExecContext;
1487
1488 /* glyph loader structure */
1489 typedef struct TT_LoaderRec_
1490 {
1491 FT_Face face;
1492 FT_Size size;
1493 FT_GlyphSlot glyph;
1494 FT_GlyphLoader gloader;
1495
1496 FT_ULong load_flags;
1497 FT_UInt glyph_index;
1498
1499 FT_Stream stream;
1500 FT_Int byte_len;
1501
1502 FT_Short n_contours;
1503 FT_BBox bbox;
1504 FT_Int left_bearing;
1505 FT_Int advance;
1506 FT_Int linear;
1507 FT_Bool linear_def;
1508 FT_Bool preserve_pps;
1509 FT_Vector pp1;
1510 FT_Vector pp2;
1511
1512 FT_ULong glyf_offset;
1513
1514 /* the zone where we load our glyphs */
1515 TT_GlyphZoneRec base;
1516 TT_GlyphZoneRec zone;
1517
1518 TT_ExecContext exec;
1519 FT_Byte* instructions;
1520 FT_ULong ins_pos;
1521
1522 /* for possible extensibility in other formats */
1523 void* other;
1524
1525 /* since version 2.1.8 */
1526 FT_Int top_bearing;
1527 FT_Int vadvance;
1528 FT_Vector pp3;
1529 FT_Vector pp4;
1530
1531 /* since version 2.2.1 */
1532 FT_Byte* cursor;
1533 FT_Byte* limit;
1534
1535 } TT_LoaderRec;
1536
1537
1538 FT_END_HEADER
1539
1540 #endif /* __TTTYPES_H__ */
1541
1542
1543 /* END */
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