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[reactos.git] / reactos / lib / 3rdparty / freetype / include / internal / tttypes.h
1 /***************************************************************************/
2 /* */
3 /* tttypes.h */
4 /* */
5 /* Basic SFNT/TrueType type definitions and interface (specification */
6 /* only). */
7 /* */
8 /* Copyright 1996-2015 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 /* WOFF_HeaderRec */
144 /* */
145 /* <Description> */
146 /* WOFF file format header. */
147 /* */
148 /* <Fields> */
149 /* See */
150 /* */
151 /* http://www.w3.org/TR/WOFF/#WOFFHeader */
152 /* */
153 typedef struct WOFF_HeaderRec_
154 {
155 FT_ULong signature;
156 FT_ULong flavor;
157 FT_ULong length;
158 FT_UShort num_tables;
159 FT_UShort reserved;
160 FT_ULong totalSfntSize;
161 FT_UShort majorVersion;
162 FT_UShort minorVersion;
163 FT_ULong metaOffset;
164 FT_ULong metaLength;
165 FT_ULong metaOrigLength;
166 FT_ULong privOffset;
167 FT_ULong privLength;
168
169 } WOFF_HeaderRec, *WOFF_Header;
170
171
172 /*************************************************************************/
173 /* */
174 /* <Struct> */
175 /* WOFF_TableRec */
176 /* */
177 /* <Description> */
178 /* This structure describes a given table of a WOFF font. */
179 /* */
180 /* <Fields> */
181 /* Tag :: A four-bytes tag describing the table. */
182 /* */
183 /* Offset :: The offset of the table from the start of the WOFF */
184 /* font in its resource. */
185 /* */
186 /* CompLength :: Compressed table length (in bytes). */
187 /* */
188 /* OrigLength :: Unompressed table length (in bytes). */
189 /* */
190 /* CheckSum :: The table checksum. This value can be ignored. */
191 /* */
192 /* OrigOffset :: The uncompressed table file offset. This value gets */
193 /* computed while constructing the (uncompressed) SFNT */
194 /* header. It is not contained in the WOFF file. */
195 /* */
196 typedef struct WOFF_TableRec_
197 {
198 FT_ULong Tag; /* table ID */
199 FT_ULong Offset; /* table file offset */
200 FT_ULong CompLength; /* compressed table length */
201 FT_ULong OrigLength; /* uncompressed table length */
202 FT_ULong CheckSum; /* uncompressed checksum */
203
204 FT_ULong OrigOffset; /* uncompressed table file offset */
205 /* (not in the WOFF file) */
206 } WOFF_TableRec, *WOFF_Table;
207
208
209 /*************************************************************************/
210 /* */
211 /* <Struct> */
212 /* TT_LongMetricsRec */
213 /* */
214 /* <Description> */
215 /* A structure modeling the long metrics of the `hmtx' and `vmtx' */
216 /* TrueType tables. The values are expressed in font units. */
217 /* */
218 /* <Fields> */
219 /* advance :: The advance width or height for the glyph. */
220 /* */
221 /* bearing :: The left-side or top-side bearing for the glyph. */
222 /* */
223 typedef struct TT_LongMetricsRec_
224 {
225 FT_UShort advance;
226 FT_Short bearing;
227
228 } TT_LongMetricsRec, *TT_LongMetrics;
229
230
231 /*************************************************************************/
232 /* */
233 /* <Type> */
234 /* TT_ShortMetrics */
235 /* */
236 /* <Description> */
237 /* A simple type to model the short metrics of the `hmtx' and `vmtx' */
238 /* tables. */
239 /* */
240 typedef FT_Short TT_ShortMetrics;
241
242
243 /*************************************************************************/
244 /* */
245 /* <Struct> */
246 /* TT_NameEntryRec */
247 /* */
248 /* <Description> */
249 /* A structure modeling TrueType name records. Name records are used */
250 /* to store important strings like family name, style name, */
251 /* copyright, etc. in _localized_ versions (i.e., language, encoding, */
252 /* etc). */
253 /* */
254 /* <Fields> */
255 /* platformID :: The ID of the name's encoding platform. */
256 /* */
257 /* encodingID :: The platform-specific ID for the name's encoding. */
258 /* */
259 /* languageID :: The platform-specific ID for the name's language. */
260 /* */
261 /* nameID :: The ID specifying what kind of name this is. */
262 /* */
263 /* stringLength :: The length of the string in bytes. */
264 /* */
265 /* stringOffset :: The offset to the string in the `name' table. */
266 /* */
267 /* string :: A pointer to the string's bytes. Note that these */
268 /* are usually UTF-16 encoded characters. */
269 /* */
270 typedef struct TT_NameEntryRec_
271 {
272 FT_UShort platformID;
273 FT_UShort encodingID;
274 FT_UShort languageID;
275 FT_UShort nameID;
276 FT_UShort stringLength;
277 FT_ULong stringOffset;
278
279 /* this last field is not defined in the spec */
280 /* but used by the FreeType engine */
281
282 FT_Byte* string;
283
284 } TT_NameEntryRec, *TT_NameEntry;
285
286
287 /*************************************************************************/
288 /* */
289 /* <Struct> */
290 /* TT_NameTableRec */
291 /* */
292 /* <Description> */
293 /* A structure modeling the TrueType name table. */
294 /* */
295 /* <Fields> */
296 /* format :: The format of the name table. */
297 /* */
298 /* numNameRecords :: The number of names in table. */
299 /* */
300 /* storageOffset :: The offset of the name table in the `name' */
301 /* TrueType table. */
302 /* */
303 /* names :: An array of name records. */
304 /* */
305 /* stream :: the file's input stream. */
306 /* */
307 typedef struct TT_NameTableRec_
308 {
309 FT_UShort format;
310 FT_UInt numNameRecords;
311 FT_UInt storageOffset;
312 TT_NameEntryRec* names;
313 FT_Stream stream;
314
315 } TT_NameTableRec, *TT_NameTable;
316
317
318 /*************************************************************************/
319 /*************************************************************************/
320 /*************************************************************************/
321 /*** ***/
322 /*** ***/
323 /*** OPTIONAL TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/
324 /*** ***/
325 /*** ***/
326 /*************************************************************************/
327 /*************************************************************************/
328 /*************************************************************************/
329
330
331 /*************************************************************************/
332 /* */
333 /* <Struct> */
334 /* TT_GaspRangeRec */
335 /* */
336 /* <Description> */
337 /* A tiny structure used to model a gasp range according to the */
338 /* TrueType specification. */
339 /* */
340 /* <Fields> */
341 /* maxPPEM :: The maximum ppem value to which `gaspFlag' applies. */
342 /* */
343 /* gaspFlag :: A flag describing the grid-fitting and anti-aliasing */
344 /* modes to be used. */
345 /* */
346 typedef struct TT_GaspRangeRec_
347 {
348 FT_UShort maxPPEM;
349 FT_UShort gaspFlag;
350
351 } TT_GaspRangeRec, *TT_GaspRange;
352
353
354 #define TT_GASP_GRIDFIT 0x01
355 #define TT_GASP_DOGRAY 0x02
356
357
358 /*************************************************************************/
359 /* */
360 /* <Struct> */
361 /* TT_GaspRec */
362 /* */
363 /* <Description> */
364 /* A structure modeling the TrueType `gasp' table used to specify */
365 /* grid-fitting and anti-aliasing behaviour. */
366 /* */
367 /* <Fields> */
368 /* version :: The version number. */
369 /* */
370 /* numRanges :: The number of gasp ranges in table. */
371 /* */
372 /* gaspRanges :: An array of gasp ranges. */
373 /* */
374 typedef struct TT_Gasp_
375 {
376 FT_UShort version;
377 FT_UShort numRanges;
378 TT_GaspRange gaspRanges;
379
380 } TT_GaspRec;
381
382
383 /*************************************************************************/
384 /*************************************************************************/
385 /*************************************************************************/
386 /*** ***/
387 /*** ***/
388 /*** EMBEDDED BITMAPS SUPPORT ***/
389 /*** ***/
390 /*** ***/
391 /*************************************************************************/
392 /*************************************************************************/
393 /*************************************************************************/
394
395
396 /*************************************************************************/
397 /* */
398 /* <Struct> */
399 /* TT_SBit_MetricsRec */
400 /* */
401 /* <Description> */
402 /* A structure used to hold the big metrics of a given glyph bitmap */
403 /* in a TrueType or OpenType font. These are usually found in the */
404 /* `EBDT' (Microsoft) or `bloc' (Apple) table. */
405 /* */
406 /* <Fields> */
407 /* height :: The glyph height in pixels. */
408 /* */
409 /* width :: The glyph width in pixels. */
410 /* */
411 /* horiBearingX :: The horizontal left bearing. */
412 /* */
413 /* horiBearingY :: The horizontal top bearing. */
414 /* */
415 /* horiAdvance :: The horizontal advance. */
416 /* */
417 /* vertBearingX :: The vertical left bearing. */
418 /* */
419 /* vertBearingY :: The vertical top bearing. */
420 /* */
421 /* vertAdvance :: The vertical advance. */
422 /* */
423 typedef struct TT_SBit_MetricsRec_
424 {
425 FT_UShort height;
426 FT_UShort width;
427
428 FT_Short horiBearingX;
429 FT_Short horiBearingY;
430 FT_UShort horiAdvance;
431
432 FT_Short vertBearingX;
433 FT_Short vertBearingY;
434 FT_UShort vertAdvance;
435
436 } TT_SBit_MetricsRec, *TT_SBit_Metrics;
437
438
439 /*************************************************************************/
440 /* */
441 /* <Struct> */
442 /* TT_SBit_SmallMetricsRec */
443 /* */
444 /* <Description> */
445 /* A structure used to hold the small metrics of a given glyph bitmap */
446 /* in a TrueType or OpenType font. These are usually found in the */
447 /* `EBDT' (Microsoft) or the `bdat' (Apple) table. */
448 /* */
449 /* <Fields> */
450 /* height :: The glyph height in pixels. */
451 /* */
452 /* width :: The glyph width in pixels. */
453 /* */
454 /* bearingX :: The left-side bearing. */
455 /* */
456 /* bearingY :: The top-side bearing. */
457 /* */
458 /* advance :: The advance width or height. */
459 /* */
460 typedef struct TT_SBit_Small_Metrics_
461 {
462 FT_Byte height;
463 FT_Byte width;
464
465 FT_Char bearingX;
466 FT_Char bearingY;
467 FT_Byte advance;
468
469 } TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics;
470
471
472 /*************************************************************************/
473 /* */
474 /* <Struct> */
475 /* TT_SBit_LineMetricsRec */
476 /* */
477 /* <Description> */
478 /* A structure used to describe the text line metrics of a given */
479 /* bitmap strike, for either a horizontal or vertical layout. */
480 /* */
481 /* <Fields> */
482 /* ascender :: The ascender in pixels. */
483 /* */
484 /* descender :: The descender in pixels. */
485 /* */
486 /* max_width :: The maximum glyph width in pixels. */
487 /* */
488 /* caret_slope_enumerator :: Rise of the caret slope, typically set */
489 /* to 1 for non-italic fonts. */
490 /* */
491 /* caret_slope_denominator :: Rise of the caret slope, typically set */
492 /* to 0 for non-italic fonts. */
493 /* */
494 /* caret_offset :: Offset in pixels to move the caret for */
495 /* proper positioning. */
496 /* */
497 /* min_origin_SB :: Minimum of horiBearingX (resp. */
498 /* vertBearingY). */
499 /* min_advance_SB :: Minimum of */
500 /* */
501 /* horizontal advance - */
502 /* ( horiBearingX + width ) */
503 /* */
504 /* resp. */
505 /* */
506 /* vertical advance - */
507 /* ( vertBearingY + height ) */
508 /* */
509 /* max_before_BL :: Maximum of horiBearingY (resp. */
510 /* vertBearingY). */
511 /* */
512 /* min_after_BL :: Minimum of */
513 /* */
514 /* horiBearingY - height */
515 /* */
516 /* resp. */
517 /* */
518 /* vertBearingX - width */
519 /* */
520 /* pads :: Unused (to make the size of the record */
521 /* a multiple of 32 bits. */
522 /* */
523 typedef struct TT_SBit_LineMetricsRec_
524 {
525 FT_Char ascender;
526 FT_Char descender;
527 FT_Byte max_width;
528 FT_Char caret_slope_numerator;
529 FT_Char caret_slope_denominator;
530 FT_Char caret_offset;
531 FT_Char min_origin_SB;
532 FT_Char min_advance_SB;
533 FT_Char max_before_BL;
534 FT_Char min_after_BL;
535 FT_Char pads[2];
536
537 } TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics;
538
539
540 /*************************************************************************/
541 /* */
542 /* <Struct> */
543 /* TT_SBit_RangeRec */
544 /* */
545 /* <Description> */
546 /* A TrueType/OpenType subIndexTable as defined in the `EBLC' */
547 /* (Microsoft) or `bloc' (Apple) tables. */
548 /* */
549 /* <Fields> */
550 /* first_glyph :: The first glyph index in the range. */
551 /* */
552 /* last_glyph :: The last glyph index in the range. */
553 /* */
554 /* index_format :: The format of index table. Valid values are 1 */
555 /* to 5. */
556 /* */
557 /* image_format :: The format of `EBDT' image data. */
558 /* */
559 /* image_offset :: The offset to image data in `EBDT'. */
560 /* */
561 /* image_size :: For index formats 2 and 5. This is the size in */
562 /* bytes of each glyph bitmap. */
563 /* */
564 /* big_metrics :: For index formats 2 and 5. This is the big */
565 /* metrics for each glyph bitmap. */
566 /* */
567 /* num_glyphs :: For index formats 4 and 5. This is the number of */
568 /* glyphs in the code array. */
569 /* */
570 /* glyph_offsets :: For index formats 1 and 3. */
571 /* */
572 /* glyph_codes :: For index formats 4 and 5. */
573 /* */
574 /* table_offset :: The offset of the index table in the `EBLC' */
575 /* table. Only used during strike loading. */
576 /* */
577 typedef struct TT_SBit_RangeRec_
578 {
579 FT_UShort first_glyph;
580 FT_UShort last_glyph;
581
582 FT_UShort index_format;
583 FT_UShort image_format;
584 FT_ULong image_offset;
585
586 FT_ULong image_size;
587 TT_SBit_MetricsRec metrics;
588 FT_ULong num_glyphs;
589
590 FT_ULong* glyph_offsets;
591 FT_UShort* glyph_codes;
592
593 FT_ULong table_offset;
594
595 } TT_SBit_RangeRec, *TT_SBit_Range;
596
597
598 /*************************************************************************/
599 /* */
600 /* <Struct> */
601 /* TT_SBit_StrikeRec */
602 /* */
603 /* <Description> */
604 /* A structure used describe a given bitmap strike in the `EBLC' */
605 /* (Microsoft) or `bloc' (Apple) tables. */
606 /* */
607 /* <Fields> */
608 /* num_index_ranges :: The number of index ranges. */
609 /* */
610 /* index_ranges :: An array of glyph index ranges. */
611 /* */
612 /* color_ref :: Unused. `color_ref' is put in for future */
613 /* enhancements, but these fields are already */
614 /* in use by other platforms (e.g. Newton). */
615 /* For details, please see */
616 /* */
617 /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html */
618 /* */
619 /* hori :: The line metrics for horizontal layouts. */
620 /* */
621 /* vert :: The line metrics for vertical layouts. */
622 /* */
623 /* start_glyph :: The lowest glyph index for this strike. */
624 /* */
625 /* end_glyph :: The highest glyph index for this strike. */
626 /* */
627 /* x_ppem :: The number of horizontal pixels per EM. */
628 /* */
629 /* y_ppem :: The number of vertical pixels per EM. */
630 /* */
631 /* bit_depth :: The bit depth. Valid values are 1, 2, 4, */
632 /* and 8. */
633 /* */
634 /* flags :: Is this a vertical or horizontal strike? For */
635 /* details, please see */
636 /* */
637 /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6bloc.html */
638 /* */
639 typedef struct TT_SBit_StrikeRec_
640 {
641 FT_Int num_ranges;
642 TT_SBit_Range sbit_ranges;
643 FT_ULong ranges_offset;
644
645 FT_ULong color_ref;
646
647 TT_SBit_LineMetricsRec hori;
648 TT_SBit_LineMetricsRec vert;
649
650 FT_UShort start_glyph;
651 FT_UShort end_glyph;
652
653 FT_Byte x_ppem;
654 FT_Byte y_ppem;
655
656 FT_Byte bit_depth;
657 FT_Char flags;
658
659 } TT_SBit_StrikeRec, *TT_SBit_Strike;
660
661
662 /*************************************************************************/
663 /* */
664 /* <Struct> */
665 /* TT_SBit_ComponentRec */
666 /* */
667 /* <Description> */
668 /* A simple structure to describe a compound sbit element. */
669 /* */
670 /* <Fields> */
671 /* glyph_code :: The element's glyph index. */
672 /* */
673 /* x_offset :: The element's left bearing. */
674 /* */
675 /* y_offset :: The element's top bearing. */
676 /* */
677 typedef struct TT_SBit_ComponentRec_
678 {
679 FT_UShort glyph_code;
680 FT_Char x_offset;
681 FT_Char y_offset;
682
683 } TT_SBit_ComponentRec, *TT_SBit_Component;
684
685
686 /*************************************************************************/
687 /* */
688 /* <Struct> */
689 /* TT_SBit_ScaleRec */
690 /* */
691 /* <Description> */
692 /* A structure used describe a given bitmap scaling table, as defined */
693 /* in the `EBSC' table. */
694 /* */
695 /* <Fields> */
696 /* hori :: The horizontal line metrics. */
697 /* */
698 /* vert :: The vertical line metrics. */
699 /* */
700 /* x_ppem :: The number of horizontal pixels per EM. */
701 /* */
702 /* y_ppem :: The number of vertical pixels per EM. */
703 /* */
704 /* x_ppem_substitute :: Substitution x_ppem value. */
705 /* */
706 /* y_ppem_substitute :: Substitution y_ppem value. */
707 /* */
708 typedef struct TT_SBit_ScaleRec_
709 {
710 TT_SBit_LineMetricsRec hori;
711 TT_SBit_LineMetricsRec vert;
712
713 FT_Byte x_ppem;
714 FT_Byte y_ppem;
715
716 FT_Byte x_ppem_substitute;
717 FT_Byte y_ppem_substitute;
718
719 } TT_SBit_ScaleRec, *TT_SBit_Scale;
720
721
722 /*************************************************************************/
723 /*************************************************************************/
724 /*************************************************************************/
725 /*** ***/
726 /*** ***/
727 /*** POSTSCRIPT GLYPH NAMES SUPPORT ***/
728 /*** ***/
729 /*** ***/
730 /*************************************************************************/
731 /*************************************************************************/
732 /*************************************************************************/
733
734
735 /*************************************************************************/
736 /* */
737 /* <Struct> */
738 /* TT_Post_20Rec */
739 /* */
740 /* <Description> */
741 /* Postscript names sub-table, format 2.0. Stores the PS name of */
742 /* each glyph in the font face. */
743 /* */
744 /* <Fields> */
745 /* num_glyphs :: The number of named glyphs in the table. */
746 /* */
747 /* num_names :: The number of PS names stored in the table. */
748 /* */
749 /* glyph_indices :: The indices of the glyphs in the names arrays. */
750 /* */
751 /* glyph_names :: The PS names not in Mac Encoding. */
752 /* */
753 typedef struct TT_Post_20Rec_
754 {
755 FT_UShort num_glyphs;
756 FT_UShort num_names;
757 FT_UShort* glyph_indices;
758 FT_Char** glyph_names;
759
760 } TT_Post_20Rec, *TT_Post_20;
761
762
763 /*************************************************************************/
764 /* */
765 /* <Struct> */
766 /* TT_Post_25Rec */
767 /* */
768 /* <Description> */
769 /* Postscript names sub-table, format 2.5. Stores the PS name of */
770 /* each glyph in the font face. */
771 /* */
772 /* <Fields> */
773 /* num_glyphs :: The number of glyphs in the table. */
774 /* */
775 /* offsets :: An array of signed offsets in a normal Mac */
776 /* Postscript name encoding. */
777 /* */
778 typedef struct TT_Post_25_
779 {
780 FT_UShort num_glyphs;
781 FT_Char* offsets;
782
783 } TT_Post_25Rec, *TT_Post_25;
784
785
786 /*************************************************************************/
787 /* */
788 /* <Struct> */
789 /* TT_Post_NamesRec */
790 /* */
791 /* <Description> */
792 /* Postscript names table, either format 2.0 or 2.5. */
793 /* */
794 /* <Fields> */
795 /* loaded :: A flag to indicate whether the PS names are loaded. */
796 /* */
797 /* format_20 :: The sub-table used for format 2.0. */
798 /* */
799 /* format_25 :: The sub-table used for format 2.5. */
800 /* */
801 typedef struct TT_Post_NamesRec_
802 {
803 FT_Bool loaded;
804
805 union
806 {
807 TT_Post_20Rec format_20;
808 TT_Post_25Rec format_25;
809
810 } names;
811
812 } TT_Post_NamesRec, *TT_Post_Names;
813
814
815 /*************************************************************************/
816 /*************************************************************************/
817 /*************************************************************************/
818 /*** ***/
819 /*** ***/
820 /*** GX VARIATION TABLE SUPPORT ***/
821 /*** ***/
822 /*** ***/
823 /*************************************************************************/
824 /*************************************************************************/
825 /*************************************************************************/
826
827
828 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
829 typedef struct GX_BlendRec_ *GX_Blend;
830 #endif
831
832 /*************************************************************************/
833 /*************************************************************************/
834 /*************************************************************************/
835 /*** ***/
836 /*** ***/
837 /*** EMBEDDED BDF PROPERTIES TABLE SUPPORT ***/
838 /*** ***/
839 /*** ***/
840 /*************************************************************************/
841 /*************************************************************************/
842 /*************************************************************************/
843
844 /*
845 * These types are used to support a `BDF ' table that isn't part of the
846 * official TrueType specification. It is mainly used in SFNT-based
847 * bitmap fonts that were generated from a set of BDF fonts.
848 *
849 * The format of the table is as follows.
850 *
851 * USHORT version `BDF ' table version number, should be 0x0001.
852 * USHORT strikeCount Number of strikes (bitmap sizes) in this table.
853 * ULONG stringTable Offset (from start of BDF table) to string
854 * table.
855 *
856 * This is followed by an array of `strikeCount' descriptors, having the
857 * following format.
858 *
859 * USHORT ppem Vertical pixels per EM for this strike.
860 * USHORT numItems Number of items for this strike (properties and
861 * atoms). Maximum is 255.
862 *
863 * This array in turn is followed by `strikeCount' value sets. Each
864 * `value set' is an array of `numItems' items with the following format.
865 *
866 * ULONG item_name Offset in string table to item name.
867 * USHORT item_type The item type. Possible values are
868 * 0 => string (e.g., COMMENT)
869 * 1 => atom (e.g., FONT or even SIZE)
870 * 2 => int32
871 * 3 => uint32
872 * 0x10 => A flag to indicate a properties. This
873 * is ORed with the above values.
874 * ULONG item_value For strings => Offset into string table without
875 * the corresponding double quotes.
876 * For atoms => Offset into string table.
877 * For integers => Direct value.
878 *
879 * All strings in the string table consist of bytes and are
880 * zero-terminated.
881 *
882 */
883
884 #ifdef TT_CONFIG_OPTION_BDF
885
886 typedef struct TT_BDFRec_
887 {
888 FT_Byte* table;
889 FT_Byte* table_end;
890 FT_Byte* strings;
891 FT_ULong strings_size;
892 FT_UInt num_strikes;
893 FT_Bool loaded;
894
895 } TT_BDFRec, *TT_BDF;
896
897 #endif /* TT_CONFIG_OPTION_BDF */
898
899 /*************************************************************************/
900 /*************************************************************************/
901 /*************************************************************************/
902 /*** ***/
903 /*** ***/
904 /*** ORIGINAL TT_FACE CLASS DEFINITION ***/
905 /*** ***/
906 /*** ***/
907 /*************************************************************************/
908 /*************************************************************************/
909 /*************************************************************************/
910
911
912 /*************************************************************************/
913 /* */
914 /* This structure/class is defined here because it is common to the */
915 /* following formats: TTF, OpenType-TT, and OpenType-CFF. */
916 /* */
917 /* Note, however, that the classes TT_Size and TT_GlyphSlot are not */
918 /* shared between font drivers, and are thus defined in `ttobjs.h'. */
919 /* */
920 /*************************************************************************/
921
922
923 /*************************************************************************/
924 /* */
925 /* <Type> */
926 /* TT_Face */
927 /* */
928 /* <Description> */
929 /* A handle to a TrueType face/font object. A TT_Face encapsulates */
930 /* the resolution and scaling independent parts of a TrueType font */
931 /* resource. */
932 /* */
933 /* <Note> */
934 /* The TT_Face structure is also used as a `parent class' for the */
935 /* OpenType-CFF class (T2_Face). */
936 /* */
937 typedef struct TT_FaceRec_* TT_Face;
938
939
940 /* a function type used for the truetype bytecode interpreter hooks */
941 typedef FT_Error
942 (*TT_Interpreter)( void* exec_context );
943
944 /* forward declaration */
945 typedef struct TT_LoaderRec_* TT_Loader;
946
947
948 /*************************************************************************/
949 /* */
950 /* <FuncType> */
951 /* TT_Loader_GotoTableFunc */
952 /* */
953 /* <Description> */
954 /* Seeks a stream to the start of a given TrueType table. */
955 /* */
956 /* <Input> */
957 /* face :: A handle to the target face object. */
958 /* */
959 /* tag :: A 4-byte tag used to name the table. */
960 /* */
961 /* stream :: The input stream. */
962 /* */
963 /* <Output> */
964 /* length :: The length of the table in bytes. Set to 0 if not */
965 /* needed. */
966 /* */
967 /* <Return> */
968 /* FreeType error code. 0 means success. */
969 /* */
970 /* <Note> */
971 /* The stream cursor must be at the font file's origin. */
972 /* */
973 typedef FT_Error
974 (*TT_Loader_GotoTableFunc)( TT_Face face,
975 FT_ULong tag,
976 FT_Stream stream,
977 FT_ULong* length );
978
979
980 /*************************************************************************/
981 /* */
982 /* <FuncType> */
983 /* TT_Loader_StartGlyphFunc */
984 /* */
985 /* <Description> */
986 /* Seeks a stream to the start of a given glyph element, and opens a */
987 /* frame for it. */
988 /* */
989 /* <Input> */
990 /* loader :: The current TrueType glyph loader object. */
991 /* */
992 /* glyph index :: The index of the glyph to access. */
993 /* */
994 /* offset :: The offset of the glyph according to the */
995 /* `locations' table. */
996 /* */
997 /* byte_count :: The size of the frame in bytes. */
998 /* */
999 /* <Return> */
1000 /* FreeType error code. 0 means success. */
1001 /* */
1002 /* <Note> */
1003 /* This function is normally equivalent to FT_STREAM_SEEK(offset) */
1004 /* followed by FT_FRAME_ENTER(byte_count) with the loader's stream, */
1005 /* but alternative formats (e.g. compressed ones) might use something */
1006 /* different. */
1007 /* */
1008 typedef FT_Error
1009 (*TT_Loader_StartGlyphFunc)( TT_Loader loader,
1010 FT_UInt glyph_index,
1011 FT_ULong offset,
1012 FT_UInt byte_count );
1013
1014
1015 /*************************************************************************/
1016 /* */
1017 /* <FuncType> */
1018 /* TT_Loader_ReadGlyphFunc */
1019 /* */
1020 /* <Description> */
1021 /* Reads one glyph element (its header, a simple glyph, or a */
1022 /* composite) from the loader's current stream frame. */
1023 /* */
1024 /* <Input> */
1025 /* loader :: The current TrueType glyph loader object. */
1026 /* */
1027 /* <Return> */
1028 /* FreeType error code. 0 means success. */
1029 /* */
1030 typedef FT_Error
1031 (*TT_Loader_ReadGlyphFunc)( TT_Loader loader );
1032
1033
1034 /*************************************************************************/
1035 /* */
1036 /* <FuncType> */
1037 /* TT_Loader_EndGlyphFunc */
1038 /* */
1039 /* <Description> */
1040 /* Closes the current loader stream frame for the glyph. */
1041 /* */
1042 /* <Input> */
1043 /* loader :: The current TrueType glyph loader object. */
1044 /* */
1045 typedef void
1046 (*TT_Loader_EndGlyphFunc)( TT_Loader loader );
1047
1048
1049 typedef enum TT_SbitTableType_
1050 {
1051 TT_SBIT_TABLE_TYPE_NONE = 0,
1052 TT_SBIT_TABLE_TYPE_EBLC, /* `EBLC' (Microsoft), */
1053 /* `bloc' (Apple) */
1054 TT_SBIT_TABLE_TYPE_CBLC, /* `CBLC' (Google) */
1055 TT_SBIT_TABLE_TYPE_SBIX, /* `sbix' (Apple) */
1056
1057 /* do not remove */
1058 TT_SBIT_TABLE_TYPE_MAX
1059
1060 } TT_SbitTableType;
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 `vertical_info' 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_scales :: The number of sbit scales for this font. */
1175 /* */
1176 /* sbit_scales :: Array of sbit scales embedded in this */
1177 /* font. This table is optional in a */
1178 /* TrueType/OpenType font. */
1179 /* */
1180 /* postscript_names :: A table used to store the Postscript names */
1181 /* of the glyphs for this font. See the */
1182 /* file `ttconfig.h' for comments on the */
1183 /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES option. */
1184 /* */
1185 /* num_locations :: The number of glyph locations in this */
1186 /* TrueType file. This should be */
1187 /* identical to the number of glyphs. */
1188 /* Ignored for Type 2 fonts. */
1189 /* */
1190 /* glyph_locations :: An array of longs. These are offsets to */
1191 /* glyph data within the `glyf' table. */
1192 /* Ignored for Type 2 font faces. */
1193 /* */
1194 /* glyf_len :: The length of the `glyf' table. Needed */
1195 /* for malformed `loca' tables. */
1196 /* */
1197 /* font_program_size :: Size in bytecodes of the face's font */
1198 /* program. 0 if none defined. Ignored for */
1199 /* Type 2 fonts. */
1200 /* */
1201 /* font_program :: The face's font program (bytecode stream) */
1202 /* executed at load time, also used during */
1203 /* glyph rendering. Comes from the `fpgm' */
1204 /* table. Ignored for Type 2 font fonts. */
1205 /* */
1206 /* cvt_program_size :: The size in bytecodes of the face's cvt */
1207 /* program. Ignored for Type 2 fonts. */
1208 /* */
1209 /* cvt_program :: The face's cvt program (bytecode stream) */
1210 /* executed each time an instance/size is */
1211 /* changed/reset. Comes from the `prep' */
1212 /* table. Ignored for Type 2 fonts. */
1213 /* */
1214 /* cvt_size :: Size of the control value table (in */
1215 /* entries). Ignored for Type 2 fonts. */
1216 /* */
1217 /* cvt :: The face's original control value table. */
1218 /* Coordinates are expressed in unscaled font */
1219 /* units. Comes from the `cvt ' table. */
1220 /* Ignored for Type 2 fonts. */
1221 /* */
1222 /* num_kern_pairs :: The number of kerning pairs present in the */
1223 /* font file. The engine only loads the */
1224 /* first horizontal format 0 kern table it */
1225 /* finds in the font file. Ignored for */
1226 /* Type 2 fonts. */
1227 /* */
1228 /* kern_table_index :: The index of the kerning table in the font */
1229 /* kerning directory. Ignored for Type 2 */
1230 /* fonts. */
1231 /* */
1232 /* interpreter :: A pointer to the TrueType bytecode */
1233 /* interpreters field is also used to hook */
1234 /* the debugger in `ttdebug'. */
1235 /* */
1236 /* unpatented_hinting :: If true, use only unpatented methods in */
1237 /* the bytecode interpreter. */
1238 /* */
1239 /* doblend :: A boolean which is set if the font should */
1240 /* be blended (this is for GX var). */
1241 /* */
1242 /* blend :: Contains the data needed to control GX */
1243 /* variation tables (rather like Multiple */
1244 /* Master data). */
1245 /* */
1246 /* extra :: Reserved for third-party font drivers. */
1247 /* */
1248 /* postscript_name :: The PS name of the font. Used by the */
1249 /* postscript name service. */
1250 /* */
1251 typedef struct TT_FaceRec_
1252 {
1253 FT_FaceRec root;
1254
1255 TTC_HeaderRec ttc_header;
1256
1257 FT_ULong format_tag;
1258 FT_UShort num_tables;
1259 TT_Table dir_tables;
1260
1261 TT_Header header; /* TrueType header table */
1262 TT_HoriHeader horizontal; /* TrueType horizontal header */
1263
1264 TT_MaxProfile max_profile;
1265
1266 FT_Bool vertical_info;
1267 TT_VertHeader vertical; /* TT Vertical header, if present */
1268
1269 FT_UShort num_names; /* number of name records */
1270 TT_NameTableRec name_table; /* name table */
1271
1272 TT_OS2 os2; /* TrueType OS/2 table */
1273 TT_Postscript postscript; /* TrueType Postscript table */
1274
1275 FT_Byte* cmap_table; /* extracted `cmap' table */
1276 FT_ULong cmap_size;
1277
1278 TT_Loader_GotoTableFunc goto_table;
1279
1280 TT_Loader_StartGlyphFunc access_glyph_frame;
1281 TT_Loader_EndGlyphFunc forget_glyph_frame;
1282 TT_Loader_ReadGlyphFunc read_glyph_header;
1283 TT_Loader_ReadGlyphFunc read_simple_glyph;
1284 TT_Loader_ReadGlyphFunc read_composite_glyph;
1285
1286 /* a typeless pointer to the SFNT_Interface table used to load */
1287 /* the basic TrueType tables in the face object */
1288 void* sfnt;
1289
1290 /* a typeless pointer to the FT_Service_PsCMapsRec table used to */
1291 /* handle glyph names <-> unicode & Mac values */
1292 void* psnames;
1293
1294
1295 /***********************************************************************/
1296 /* */
1297 /* Optional TrueType/OpenType tables */
1298 /* */
1299 /***********************************************************************/
1300
1301 /* grid-fitting and scaling table */
1302 TT_GaspRec gasp; /* the `gasp' table */
1303
1304 /* PCL 5 table */
1305 TT_PCLT pclt;
1306
1307 /* embedded bitmaps support */
1308 FT_ULong num_sbit_scales;
1309 TT_SBit_Scale sbit_scales;
1310
1311 /* postscript names table */
1312 TT_Post_NamesRec postscript_names;
1313
1314
1315 /***********************************************************************/
1316 /* */
1317 /* TrueType-specific fields (ignored by the OTF-Type2 driver) */
1318 /* */
1319 /***********************************************************************/
1320
1321 /* the font program, if any */
1322 FT_ULong font_program_size;
1323 FT_Byte* font_program;
1324
1325 /* the cvt program, if any */
1326 FT_ULong cvt_program_size;
1327 FT_Byte* cvt_program;
1328
1329 /* the original, unscaled, control value table */
1330 FT_ULong cvt_size;
1331 FT_Short* cvt;
1332
1333 /* A pointer to the bytecode interpreter to use. This is also */
1334 /* used to hook the debugger for the `ttdebug' utility. */
1335 TT_Interpreter interpreter;
1336
1337 #ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
1338 /* Use unpatented hinting only. */
1339 FT_Bool unpatented_hinting;
1340 #endif
1341
1342 /***********************************************************************/
1343 /* */
1344 /* Other tables or fields. This is used by derivative formats like */
1345 /* OpenType. */
1346 /* */
1347 /***********************************************************************/
1348
1349 FT_Generic extra;
1350
1351 const char* postscript_name;
1352
1353 FT_ULong glyf_len;
1354
1355 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
1356 FT_Bool doblend;
1357 GX_Blend blend;
1358 #endif
1359
1360 /* since version 2.2 */
1361
1362 FT_Byte* horz_metrics;
1363 FT_ULong horz_metrics_size;
1364
1365 FT_Byte* vert_metrics;
1366 FT_ULong vert_metrics_size;
1367
1368 FT_ULong num_locations; /* in broken TTF, gid > 0xFFFF */
1369 FT_Byte* glyph_locations;
1370
1371 FT_Byte* hdmx_table;
1372 FT_ULong hdmx_table_size;
1373 FT_UInt hdmx_record_count;
1374 FT_ULong hdmx_record_size;
1375 FT_Byte* hdmx_record_sizes;
1376
1377 FT_Byte* sbit_table;
1378 FT_ULong sbit_table_size;
1379 TT_SbitTableType sbit_table_type;
1380 FT_UInt sbit_num_strikes;
1381
1382 FT_Byte* kern_table;
1383 FT_ULong kern_table_size;
1384 FT_UInt num_kern_tables;
1385 FT_UInt32 kern_avail_bits;
1386 FT_UInt32 kern_order_bits;
1387
1388 #ifdef TT_CONFIG_OPTION_BDF
1389 TT_BDFRec bdf;
1390 #endif /* TT_CONFIG_OPTION_BDF */
1391
1392 /* since 2.3.0 */
1393 FT_ULong horz_metrics_offset;
1394 FT_ULong vert_metrics_offset;
1395
1396 #ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
1397 /* since 2.4.12 */
1398 FT_ULong sph_found_func_flags; /* special functions found */
1399 /* for this face */
1400 FT_Bool sph_compatibility_mode;
1401 #endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
1402
1403 } TT_FaceRec;
1404
1405
1406 /*************************************************************************/
1407 /* */
1408 /* <Struct> */
1409 /* TT_GlyphZoneRec */
1410 /* */
1411 /* <Description> */
1412 /* A glyph zone is used to load, scale and hint glyph outline */
1413 /* coordinates. */
1414 /* */
1415 /* <Fields> */
1416 /* memory :: A handle to the memory manager. */
1417 /* */
1418 /* max_points :: The maximum size in points of the zone. */
1419 /* */
1420 /* max_contours :: Max size in links contours of the zone. */
1421 /* */
1422 /* n_points :: The current number of points in the zone. */
1423 /* */
1424 /* n_contours :: The current number of contours in the zone. */
1425 /* */
1426 /* org :: The original glyph coordinates (font */
1427 /* units/scaled). */
1428 /* */
1429 /* cur :: The current glyph coordinates (scaled/hinted). */
1430 /* */
1431 /* tags :: The point control tags. */
1432 /* */
1433 /* contours :: The contours end points. */
1434 /* */
1435 /* first_point :: Offset of the current subglyph's first point. */
1436 /* */
1437 typedef struct TT_GlyphZoneRec_
1438 {
1439 FT_Memory memory;
1440 FT_UShort max_points;
1441 FT_Short max_contours;
1442 FT_UShort n_points; /* number of points in zone */
1443 FT_Short n_contours; /* number of contours */
1444
1445 FT_Vector* org; /* original point coordinates */
1446 FT_Vector* cur; /* current point coordinates */
1447 FT_Vector* orus; /* original (unscaled) point coordinates */
1448
1449 FT_Byte* tags; /* current touch flags */
1450 FT_UShort* contours; /* contour end points */
1451
1452 FT_UShort first_point; /* offset of first (#0) point */
1453
1454 } TT_GlyphZoneRec, *TT_GlyphZone;
1455
1456
1457 /* handle to execution context */
1458 typedef struct TT_ExecContextRec_* TT_ExecContext;
1459
1460 /* glyph loader structure */
1461 typedef struct TT_LoaderRec_
1462 {
1463 FT_Face face;
1464 FT_Size size;
1465 FT_GlyphSlot glyph;
1466 FT_GlyphLoader gloader;
1467
1468 FT_ULong load_flags;
1469 FT_UInt glyph_index;
1470
1471 FT_Stream stream;
1472 FT_Int byte_len;
1473
1474 FT_Short n_contours;
1475 FT_BBox bbox;
1476 FT_Int left_bearing;
1477 FT_Int advance;
1478 FT_Int linear;
1479 FT_Bool linear_def;
1480 FT_Vector pp1;
1481 FT_Vector pp2;
1482
1483 FT_ULong glyf_offset;
1484
1485 /* the zone where we load our glyphs */
1486 TT_GlyphZoneRec base;
1487 TT_GlyphZoneRec zone;
1488
1489 TT_ExecContext exec;
1490 FT_Byte* instructions;
1491 FT_ULong ins_pos;
1492
1493 /* for possible extensibility in other formats */
1494 void* other;
1495
1496 /* since version 2.1.8 */
1497 FT_Int top_bearing;
1498 FT_Int vadvance;
1499 FT_Vector pp3;
1500 FT_Vector pp4;
1501
1502 /* since version 2.2.1 */
1503 FT_Byte* cursor;
1504 FT_Byte* limit;
1505
1506 } TT_LoaderRec;
1507
1508
1509 FT_END_HEADER
1510
1511 #endif /* __TTTYPES_H__ */
1512
1513
1514 /* END */
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