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1 /***************************************************************************/ | |
2 /* */ | |
3 /* tttypes.h */ | |
4 /* */ | |
5 /* Basic SFNT/TrueType type definitions and interface (specification */ | |
6 /* only). */ | |
7 /* */ | |
8 /* Copyright 1996-2002, 2004-2008, 2012-2013 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 "../tttables.h" | |
26 #include "ftobjs.h" | |
27 | |
28 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT | |
29 #include "../ftmm.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 /*************************************************************************/ | |
315 /*************************************************************************/ | |
316 /*************************************************************************/ | |
317 /*** ***/ | |
318 /*** ***/ | |
319 /*** EMBEDDED BITMAPS SUPPORT ***/ | |
320 /*** ***/ | |
321 /*** ***/ | |
322 /*************************************************************************/ | |
323 /*************************************************************************/ | |
324 /*************************************************************************/ | |
325 | |
326 | |
327 /*************************************************************************/ | |
328 /* */ | |
329 /* <Struct> */ | |
330 /* TT_SBit_MetricsRec */ | |
331 /* */ | |
332 /* <Description> */ | |
333 /* A structure used to hold the big metrics of a given glyph bitmap */ | |
334 /* in a TrueType or OpenType font. These are usually found in the */ | |
335 /* `EBDT' (Microsoft) or `bloc' (Apple) table. */ | |
336 /* */ | |
337 /* <Fields> */ | |
338 /* height :: The glyph height in pixels. */ | |
339 /* */ | |
340 /* width :: The glyph width in pixels. */ | |
341 /* */ | |
342 /* horiBearingX :: The horizontal left bearing. */ | |
343 /* */ | |
344 /* horiBearingY :: The horizontal top bearing. */ | |
345 /* */ | |
346 /* horiAdvance :: The horizontal advance. */ | |
347 /* */ | |
348 /* vertBearingX :: The vertical left bearing. */ | |
349 /* */ | |
350 /* vertBearingY :: The vertical top bearing. */ | |
351 /* */ | |
352 /* vertAdvance :: The vertical advance. */ | |
353 /* */ | |
354 typedef struct TT_SBit_MetricsRec_ | |
355 { | |
356 FT_Byte height; | |
357 FT_Byte width; | |
358 | |
359 FT_Char horiBearingX; | |
360 FT_Char horiBearingY; | |
361 FT_Byte horiAdvance; | |
362 | |
363 FT_Char vertBearingX; | |
364 FT_Char vertBearingY; | |
365 FT_Byte vertAdvance; | |
366 | |
367 } TT_SBit_MetricsRec, *TT_SBit_Metrics; | |
368 | |
369 | |
370 /*************************************************************************/ | |
371 /* */ | |
372 /* <Struct> */ | |
373 /* TT_SBit_SmallMetricsRec */ | |
374 /* */ | |
375 /* <Description> */ | |
376 /* A structure used to hold the small metrics of a given glyph bitmap */ | |
377 /* in a TrueType or OpenType font. These are usually found in the */ | |
378 /* `EBDT' (Microsoft) or the `bdat' (Apple) table. */ | |
379 /* */ | |
380 /* <Fields> */ | |
381 /* height :: The glyph height in pixels. */ | |
382 /* */ | |
383 /* width :: The glyph width in pixels. */ | |
384 /* */ | |
385 /* bearingX :: The left-side bearing. */ | |
386 /* */ | |
387 /* bearingY :: The top-side bearing. */ | |
388 /* */ | |
389 /* advance :: The advance width or height. */ | |
390 /* */ | |
391 typedef struct TT_SBit_Small_Metrics_ | |
392 { | |
393 FT_Byte height; | |
394 FT_Byte width; | |
395 | |
396 FT_Char bearingX; | |
397 FT_Char bearingY; | |
398 FT_Byte advance; | |
399 | |
400 } TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics; | |
401 | |
402 | |
403 /*************************************************************************/ | |
404 /* */ | |
405 /* <Struct> */ | |
406 /* TT_SBit_LineMetricsRec */ | |
407 /* */ | |
408 /* <Description> */ | |
409 /* A structure used to describe the text line metrics of a given */ | |
410 /* bitmap strike, for either a horizontal or vertical layout. */ | |
411 /* */ | |
412 /* <Fields> */ | |
413 /* ascender :: The ascender in pixels. */ | |
414 /* */ | |
415 /* descender :: The descender in pixels. */ | |
416 /* */ | |
417 /* max_width :: The maximum glyph width in pixels. */ | |
418 /* */ | |
419 /* caret_slope_enumerator :: Rise of the caret slope, typically set */ | |
420 /* to 1 for non-italic fonts. */ | |
421 /* */ | |
422 /* caret_slope_denominator :: Rise of the caret slope, typically set */ | |
423 /* to 0 for non-italic fonts. */ | |
424 /* */ | |
425 /* caret_offset :: Offset in pixels to move the caret for */ | |
426 /* proper positioning. */ | |
427 /* */ | |
428 /* min_origin_SB :: Minimum of horiBearingX (resp. */ | |
429 /* vertBearingY). */ | |
430 /* min_advance_SB :: Minimum of */ | |
431 /* */ | |
432 /* horizontal advance - */ | |
433 /* ( horiBearingX + width ) */ | |
434 /* */ | |
435 /* resp. */ | |
436 /* */ | |
437 /* vertical advance - */ | |
438 /* ( vertBearingY + height ) */ | |
439 /* */ | |
440 /* max_before_BL :: Maximum of horiBearingY (resp. */ | |
441 /* vertBearingY). */ | |
442 /* */ | |
443 /* min_after_BL :: Minimum of */ | |
444 /* */ | |
445 /* horiBearingY - height */ | |
446 /* */ | |
447 /* resp. */ | |
448 /* */ | |
449 /* vertBearingX - width */ | |
450 /* */ | |
451 /* pads :: Unused (to make the size of the record */ | |
452 /* a multiple of 32 bits. */ | |
453 /* */ | |
454 typedef struct TT_SBit_LineMetricsRec_ | |
455 { | |
456 FT_Char ascender; | |
457 FT_Char descender; | |
458 FT_Byte max_width; | |
459 FT_Char caret_slope_numerator; | |
460 FT_Char caret_slope_denominator; | |
461 FT_Char caret_offset; | |
462 FT_Char min_origin_SB; | |
463 FT_Char min_advance_SB; | |
464 FT_Char max_before_BL; | |
465 FT_Char min_after_BL; | |
466 FT_Char pads[2]; | |
467 | |
468 } TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics; | |
469 | |
470 | |
471 /*************************************************************************/ | |
472 /* */ | |
473 /* <Struct> */ | |
474 /* TT_SBit_RangeRec */ | |
475 /* */ | |
476 /* <Description> */ | |
477 /* A TrueType/OpenType subIndexTable as defined in the `EBLC' */ | |
478 /* (Microsoft) or `bloc' (Apple) tables. */ | |
479 /* */ | |
480 /* <Fields> */ | |
481 /* first_glyph :: The first glyph index in the range. */ | |
482 /* */ | |
483 /* last_glyph :: The last glyph index in the range. */ | |
484 /* */ | |
485 /* index_format :: The format of index table. Valid values are 1 */ | |
486 /* to 5. */ | |
487 /* */ | |
488 /* image_format :: The format of `EBDT' image data. */ | |
489 /* */ | |
490 /* image_offset :: The offset to image data in `EBDT'. */ | |
491 /* */ | |
492 /* image_size :: For index formats 2 and 5. This is the size in */ | |
493 /* bytes of each glyph bitmap. */ | |
494 /* */ | |
495 /* big_metrics :: For index formats 2 and 5. This is the big */ | |
496 /* metrics for each glyph bitmap. */ | |
497 /* */ | |
498 /* num_glyphs :: For index formats 4 and 5. This is the number of */ | |
499 /* glyphs in the code array. */ | |
500 /* */ | |
501 /* glyph_offsets :: For index formats 1 and 3. */ | |
502 /* */ | |
503 /* glyph_codes :: For index formats 4 and 5. */ | |
504 /* */ | |
505 /* table_offset :: The offset of the index table in the `EBLC' */ | |
506 /* table. Only used during strike loading. */ | |
507 /* */ | |
508 typedef struct TT_SBit_RangeRec_ | |
509 { | |
510 FT_UShort first_glyph; | |
511 FT_UShort last_glyph; | |
512 | |
513 FT_UShort index_format; | |
514 FT_UShort image_format; | |
515 FT_ULong image_offset; | |
516 | |
517 FT_ULong image_size; | |
518 TT_SBit_MetricsRec metrics; | |
519 FT_ULong num_glyphs; | |
520 | |
521 FT_ULong* glyph_offsets; | |
522 FT_UShort* glyph_codes; | |
523 | |
524 FT_ULong table_offset; | |
525 | |
526 } TT_SBit_RangeRec, *TT_SBit_Range; | |
527 | |
528 | |
529 /*************************************************************************/ | |
530 /* */ | |
531 /* <Struct> */ | |
532 /* TT_SBit_StrikeRec */ | |
533 /* */ | |
534 /* <Description> */ | |
535 /* A structure used describe a given bitmap strike in the `EBLC' */ | |
536 /* (Microsoft) or `bloc' (Apple) tables. */ | |
537 /* */ | |
538 /* <Fields> */ | |
539 /* num_index_ranges :: The number of index ranges. */ | |
540 /* */ | |
541 /* index_ranges :: An array of glyph index ranges. */ | |
542 /* */ | |
543 /* color_ref :: Unused. `color_ref' is put in for future */ | |
544 /* enhancements, but these fields are already */ | |
545 /* in use by other platforms (e.g. Newton). */ | |
546 /* For details, please see */ | |
547 /* */ | |
548 /* http://fonts.apple.com/ */ | |
549 /* TTRefMan/RM06/Chap6bloc.html */ | |
550 /* */ | |
551 /* hori :: The line metrics for horizontal layouts. */ | |
552 /* */ | |
553 /* vert :: The line metrics for vertical layouts. */ | |
554 /* */ | |
555 /* start_glyph :: The lowest glyph index for this strike. */ | |
556 /* */ | |
557 /* end_glyph :: The highest glyph index for this strike. */ | |
558 /* */ | |
559 /* x_ppem :: The number of horizontal pixels per EM. */ | |
560 /* */ | |
561 /* y_ppem :: The number of vertical pixels per EM. */ | |
562 /* */ | |
563 /* bit_depth :: The bit depth. Valid values are 1, 2, 4, */ | |
564 /* and 8. */ | |
565 /* */ | |
566 /* flags :: Is this a vertical or horizontal strike? For */ | |
567 /* details, please see */ | |
568 /* */ | |
569 /* http://fonts.apple.com/ */ | |
570 /* TTRefMan/RM06/Chap6bloc.html */ | |
571 /* */ | |
572 typedef struct TT_SBit_StrikeRec_ | |
573 { | |
574 FT_Int num_ranges; | |
575 TT_SBit_Range sbit_ranges; | |
576 FT_ULong ranges_offset; | |
577 | |
578 FT_ULong color_ref; | |
579 | |
580 TT_SBit_LineMetricsRec hori; | |
581 TT_SBit_LineMetricsRec vert; | |
582 | |
583 FT_UShort start_glyph; | |
584 FT_UShort end_glyph; | |
585 | |
586 FT_Byte x_ppem; | |
587 FT_Byte y_ppem; | |
588 | |
589 FT_Byte bit_depth; | |
590 FT_Char flags; | |
591 | |
592 } TT_SBit_StrikeRec, *TT_SBit_Strike; | |
593 | |
594 | |
595 /*************************************************************************/ | |
596 /* */ | |
597 /* <Struct> */ | |
598 /* TT_SBit_ComponentRec */ | |
599 /* */ | |
600 /* <Description> */ | |
601 /* A simple structure to describe a compound sbit element. */ | |
602 /* */ | |
603 /* <Fields> */ | |
604 /* glyph_code :: The element's glyph index. */ | |
605 /* */ | |
606 /* x_offset :: The element's left bearing. */ | |
607 /* */ | |
608 /* y_offset :: The element's top bearing. */ | |
609 /* */ | |
610 typedef struct TT_SBit_ComponentRec_ | |
611 { | |
612 FT_UShort glyph_code; | |
613 FT_Char x_offset; | |
614 FT_Char y_offset; | |
615 | |
616 } TT_SBit_ComponentRec, *TT_SBit_Component; | |
617 | |
618 | |
619 /*************************************************************************/ | |
620 /* */ | |
621 /* <Struct> */ | |
622 /* TT_SBit_ScaleRec */ | |
623 /* */ | |
624 /* <Description> */ | |
625 /* A structure used describe a given bitmap scaling table, as defined */ | |
626 /* in the `EBSC' table. */ | |
627 /* */ | |
628 /* <Fields> */ | |
629 /* hori :: The horizontal line metrics. */ | |
630 /* */ | |
631 /* vert :: The vertical line metrics. */ | |
632 /* */ | |
633 /* x_ppem :: The number of horizontal pixels per EM. */ | |
634 /* */ | |
635 /* y_ppem :: The number of vertical pixels per EM. */ | |
636 /* */ | |
637 /* x_ppem_substitute :: Substitution x_ppem value. */ | |
638 /* */ | |
639 /* y_ppem_substitute :: Substitution y_ppem value. */ | |
640 /* */ | |
641 typedef struct TT_SBit_ScaleRec_ | |
642 { | |
643 TT_SBit_LineMetricsRec hori; | |
644 TT_SBit_LineMetricsRec vert; | |
645 | |
646 FT_Byte x_ppem; | |
647 FT_Byte y_ppem; | |
648 | |
649 FT_Byte x_ppem_substitute; | |
650 FT_Byte y_ppem_substitute; | |
651 | |
652 } TT_SBit_ScaleRec, *TT_SBit_Scale; | |
653 | |
654 | |
655 /*************************************************************************/ | |
656 /*************************************************************************/ | |
657 /*************************************************************************/ | |
658 /*** ***/ | |
659 /*** ***/ | |
660 /*** POSTSCRIPT GLYPH NAMES SUPPORT ***/ | |
661 /*** ***/ | |
662 /*** ***/ | |
663 /*************************************************************************/ | |
664 /*************************************************************************/ | |
665 /*************************************************************************/ | |
666 | |
667 | |
668 /*************************************************************************/ | |
669 /* */ | |
670 /* <Struct> */ | |
671 /* TT_Post_20Rec */ | |
672 /* */ | |
673 /* <Description> */ | |
674 /* Postscript names sub-table, format 2.0. Stores the PS name of */ | |
675 /* each glyph in the font face. */ | |
676 /* */ | |
677 /* <Fields> */ | |
678 /* num_glyphs :: The number of named glyphs in the table. */ | |
679 /* */ | |
680 /* num_names :: The number of PS names stored in the table. */ | |
681 /* */ | |
682 /* glyph_indices :: The indices of the glyphs in the names arrays. */ | |
683 /* */ | |
684 /* glyph_names :: The PS names not in Mac Encoding. */ | |
685 /* */ | |
686 typedef struct TT_Post_20Rec_ | |
687 { | |
688 FT_UShort num_glyphs; | |
689 FT_UShort num_names; | |
690 FT_UShort* glyph_indices; | |
691 FT_Char** glyph_names; | |
692 | |
693 } TT_Post_20Rec, *TT_Post_20; | |
694 | |
695 | |
696 /*************************************************************************/ | |
697 /* */ | |
698 /* <Struct> */ | |
699 /* TT_Post_25Rec */ | |
700 /* */ | |
701 /* <Description> */ | |
702 /* Postscript names sub-table, format 2.5. Stores the PS name of */ | |
703 /* each glyph in the font face. */ | |
704 /* */ | |
705 /* <Fields> */ | |
706 /* num_glyphs :: The number of glyphs in the table. */ | |
707 /* */ | |
708 /* offsets :: An array of signed offsets in a normal Mac */ | |
709 /* Postscript name encoding. */ | |
710 /* */ | |
711 typedef struct TT_Post_25_ | |
712 { | |
713 FT_UShort num_glyphs; | |
714 FT_Char* offsets; | |
715 | |
716 } TT_Post_25Rec, *TT_Post_25; | |
717 | |
718 | |
719 /*************************************************************************/ | |
720 /* */ | |
721 /* <Struct> */ | |
722 /* TT_Post_NamesRec */ | |
723 /* */ | |
724 /* <Description> */ | |
725 /* Postscript names table, either format 2.0 or 2.5. */ | |
726 /* */ | |
727 /* <Fields> */ | |
728 /* loaded :: A flag to indicate whether the PS names are loaded. */ | |
729 /* */ | |
730 /* format_20 :: The sub-table used for format 2.0. */ | |
731 /* */ | |
732 /* format_25 :: The sub-table used for format 2.5. */ | |
733 /* */ | |
734 typedef struct TT_Post_NamesRec_ | |
735 { | |
736 FT_Bool loaded; | |
737 | |
738 union | |
739 { | |
740 TT_Post_20Rec format_20; | |
741 TT_Post_25Rec format_25; | |
742 | |
743 } names; | |
744 | |
745 } TT_Post_NamesRec, *TT_Post_Names; | |
746 | |
747 | |
748 /*************************************************************************/ | |
749 /*************************************************************************/ | |
750 /*************************************************************************/ | |
751 /*** ***/ | |
752 /*** ***/ | |
753 /*** GX VARIATION TABLE SUPPORT ***/ | |
754 /*** ***/ | |
755 /*** ***/ | |
756 /*************************************************************************/ | |
757 /*************************************************************************/ | |
758 /*************************************************************************/ | |
759 | |
760 | |
761 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT | |
762 typedef struct GX_BlendRec_ *GX_Blend; | |
763 #endif | |
764 | |
765 /*************************************************************************/ | |
766 /*************************************************************************/ | |
767 /*************************************************************************/ | |
768 /*** ***/ | |
769 /*** ***/ | |
770 /*** EMBEDDED BDF PROPERTIES TABLE SUPPORT ***/ | |
771 /*** ***/ | |
772 /*** ***/ | |
773 /*************************************************************************/ | |
774 /*************************************************************************/ | |
775 /*************************************************************************/ | |
776 | |
777 /* | |
778 * These types are used to support a `BDF ' table that isn't part of the | |
779 * official TrueType specification. It is mainly used in SFNT-based | |
780 * bitmap fonts that were generated from a set of BDF fonts. | |
781 * | |
782 * The format of the table is as follows. | |
783 * | |
784 * USHORT version `BDF ' table version number, should be 0x0001. | |
785 * USHORT strikeCount Number of strikes (bitmap sizes) in this table. | |
786 * ULONG stringTable Offset (from start of BDF table) to string | |
787 * table. | |
788 * | |
789 * This is followed by an array of `strikeCount' descriptors, having the | |
790 * following format. | |
791 * | |
792 * USHORT ppem Vertical pixels per EM for this strike. | |
793 * USHORT numItems Number of items for this strike (properties and | |
794 * atoms). Maximum is 255. | |
795 * | |
796 * This array in turn is followed by `strikeCount' value sets. Each | |
797 * `value set' is an array of `numItems' items with the following format. | |
798 * | |
799 * ULONG item_name Offset in string table to item name. | |
800 * USHORT item_type The item type. Possible values are | |
801 * 0 => string (e.g., COMMENT) | |
802 * 1 => atom (e.g., FONT or even SIZE) | |
803 * 2 => int32 | |
804 * 3 => uint32 | |
805 * 0x10 => A flag to indicate a properties. This | |
806 * is ORed with the above values. | |
807 * ULONG item_value For strings => Offset into string table without | |
808 * the corresponding double quotes. | |
809 * For atoms => Offset into string table. | |
810 * For integers => Direct value. | |
811 * | |
812 * All strings in the string table consist of bytes and are | |
813 * zero-terminated. | |
814 * | |
815 */ | |
816 | |
817 #ifdef TT_CONFIG_OPTION_BDF | |
818 | |
819 typedef struct TT_BDFRec_ | |
820 { | |
821 FT_Byte* table; | |
822 FT_Byte* table_end; | |
823 FT_Byte* strings; | |
824 FT_ULong strings_size; | |
825 FT_UInt num_strikes; | |
826 FT_Bool loaded; | |
827 | |
828 } TT_BDFRec, *TT_BDF; | |
829 | |
830 #endif /* TT_CONFIG_OPTION_BDF */ | |
831 | |
832 /*************************************************************************/ | |
833 /*************************************************************************/ | |
834 /*************************************************************************/ | |
835 /*** ***/ | |
836 /*** ***/ | |
837 /*** ORIGINAL TT_FACE CLASS DEFINITION ***/ | |
838 /*** ***/ | |
839 /*** ***/ | |
840 /*************************************************************************/ | |
841 /*************************************************************************/ | |
842 /*************************************************************************/ | |
843 | |
844 | |
845 /*************************************************************************/ | |
846 /* */ | |
847 /* This structure/class is defined here because it is common to the */ | |
848 /* following formats: TTF, OpenType-TT, and OpenType-CFF. */ | |
849 /* */ | |
850 /* Note, however, that the classes TT_Size and TT_GlyphSlot are not */ | |
851 /* shared between font drivers, and are thus defined in `ttobjs.h'. */ | |
852 /* */ | |
853 /*************************************************************************/ | |
854 | |
855 | |
856 /*************************************************************************/ | |
857 /* */ | |
858 /* <Type> */ | |
859 /* TT_Face */ | |
860 /* */ | |
861 /* <Description> */ | |
862 /* A handle to a TrueType face/font object. A TT_Face encapsulates */ | |
863 /* the resolution and scaling independent parts of a TrueType font */ | |
864 /* resource. */ | |
865 /* */ | |
866 /* <Note> */ | |
867 /* The TT_Face structure is also used as a `parent class' for the */ | |
868 /* OpenType-CFF class (T2_Face). */ | |
869 /* */ | |
870 typedef struct TT_FaceRec_* TT_Face; | |
871 | |
872 | |
873 /* a function type used for the truetype bytecode interpreter hooks */ | |
874 typedef FT_Error | |
875 (*TT_Interpreter)( void* exec_context ); | |
876 | |
877 /* forward declaration */ | |
878 typedef struct TT_LoaderRec_* TT_Loader; | |
879 | |
880 | |
881 /*************************************************************************/ | |
882 /* */ | |
883 /* <FuncType> */ | |
884 /* TT_Loader_GotoTableFunc */ | |
885 /* */ | |
886 /* <Description> */ | |
887 /* Seeks a stream to the start of a given TrueType table. */ | |
888 /* */ | |
889 /* <Input> */ | |
890 /* face :: A handle to the target face object. */ | |
891 /* */ | |
892 /* tag :: A 4-byte tag used to name the table. */ | |
893 /* */ | |
894 /* stream :: The input stream. */ | |
895 /* */ | |
896 /* <Output> */ | |
897 /* length :: The length of the table in bytes. Set to 0 if not */ | |
898 /* needed. */ | |
899 /* */ | |
900 /* <Return> */ | |
901 /* FreeType error code. 0 means success. */ | |
902 /* */ | |
903 /* <Note> */ | |
904 /* The stream cursor must be at the font file's origin. */ | |
905 /* */ | |
906 typedef FT_Error | |
907 (*TT_Loader_GotoTableFunc)( TT_Face face, | |
908 FT_ULong tag, | |
909 FT_Stream stream, | |
910 FT_ULong* length ); | |
911 | |
912 | |
913 /*************************************************************************/ | |
914 /* */ | |
915 /* <FuncType> */ | |
916 /* TT_Loader_StartGlyphFunc */ | |
917 /* */ | |
918 /* <Description> */ | |
919 /* Seeks a stream to the start of a given glyph element, and opens a */ | |
920 /* frame for it. */ | |
921 /* */ | |
922 /* <Input> */ | |
923 /* loader :: The current TrueType glyph loader object. */ | |
924 /* */ | |
925 /* glyph index :: The index of the glyph to access. */ | |
926 /* */ | |
927 /* offset :: The offset of the glyph according to the */ | |
928 /* `locations' table. */ | |
929 /* */ | |
930 /* byte_count :: The size of the frame in bytes. */ | |
931 /* */ | |
932 /* <Return> */ | |
933 /* FreeType error code. 0 means success. */ | |
934 /* */ | |
935 /* <Note> */ | |
936 /* This function is normally equivalent to FT_STREAM_SEEK(offset) */ | |
937 /* followed by FT_FRAME_ENTER(byte_count) with the loader's stream, */ | |
938 /* but alternative formats (e.g. compressed ones) might use something */ | |
939 /* different. */ | |
940 /* */ | |
941 typedef FT_Error | |
942 (*TT_Loader_StartGlyphFunc)( TT_Loader loader, | |
943 FT_UInt glyph_index, | |
944 FT_ULong offset, | |
945 FT_UInt byte_count ); | |
946 | |
947 | |
948 /*************************************************************************/ | |
949 /* */ | |
950 /* <FuncType> */ | |
951 /* TT_Loader_ReadGlyphFunc */ | |
952 /* */ | |
953 /* <Description> */ | |
954 /* Reads one glyph element (its header, a simple glyph, or a */ | |
955 /* composite) from the loader's current stream frame. */ | |
956 /* */ | |
957 /* <Input> */ | |
958 /* loader :: The current TrueType glyph loader object. */ | |
959 /* */ | |
960 /* <Return> */ | |
961 /* FreeType error code. 0 means success. */ | |
962 /* */ | |
963 typedef FT_Error | |
964 (*TT_Loader_ReadGlyphFunc)( TT_Loader loader ); | |
965 | |
966 | |
967 /*************************************************************************/ | |
968 /* */ | |
969 /* <FuncType> */ | |
970 /* TT_Loader_EndGlyphFunc */ | |
971 /* */ | |
972 /* <Description> */ | |
973 /* Closes the current loader stream frame for the glyph. */ | |
974 /* */ | |
975 /* <Input> */ | |
976 /* loader :: The current TrueType glyph loader object. */ | |
977 /* */ | |
978 typedef void | |
979 (*TT_Loader_EndGlyphFunc)( TT_Loader loader ); | |
980 | |
981 | |
982 /*************************************************************************/ | |
983 /* */ | |
984 /* TrueType Face Type */ | |
985 /* */ | |
986 /* <Struct> */ | |
987 /* TT_Face */ | |
988 /* */ | |
989 /* <Description> */ | |
990 /* The TrueType face class. These objects model the resolution and */ | |
991 /* point-size independent data found in a TrueType font file. */ | |
992 /* */ | |
993 /* <Fields> */ | |
994 /* root :: The base FT_Face structure, managed by the */ | |
995 /* base layer. */ | |
996 /* */ | |
997 /* ttc_header :: The TrueType collection header, used when */ | |
998 /* the file is a `ttc' rather than a `ttf'. */ | |
999 /* For ordinary font files, the field */ | |
1000 /* `ttc_header.count' is set to 0. */ | |
1001 /* */ | |
1002 /* format_tag :: The font format tag. */ | |
1003 /* */ | |
1004 /* num_tables :: The number of TrueType tables in this font */ | |
1005 /* file. */ | |
1006 /* */ | |
1007 /* dir_tables :: The directory of TrueType tables for this */ | |
1008 /* font file. */ | |
1009 /* */ | |
1010 /* header :: The font's font header (`head' table). */ | |
1011 /* Read on font opening. */ | |
1012 /* */ | |
1013 /* horizontal :: The font's horizontal header (`hhea' */ | |
1014 /* table). This field also contains the */ | |
1015 /* associated horizontal metrics table */ | |
1016 /* (`hmtx'). */ | |
1017 /* */ | |
1018 /* max_profile :: The font's maximum profile table. Read on */ | |
1019 /* font opening. Note that some maximum */ | |
1020 /* values cannot be taken directly from this */ | |
1021 /* table. We thus define additional fields */ | |
1022 /* below to hold the computed maxima. */ | |
1023 /* */ | |
1024 /* vertical_info :: A boolean which is set when the font file */ | |
1025 /* contains vertical metrics. If not, the */ | |
1026 /* value of the `vertical' field is */ | |
1027 /* undefined. */ | |
1028 /* */ | |
1029 /* vertical :: The font's vertical header (`vhea' table). */ | |
1030 /* This field also contains the associated */ | |
1031 /* vertical metrics table (`vmtx'), if found. */ | |
1032 /* IMPORTANT: The contents of this field is */ | |
1033 /* undefined if the `verticalInfo' field is */ | |
1034 /* unset. */ | |
1035 /* */ | |
1036 /* num_names :: The number of name records within this */ | |
1037 /* TrueType font. */ | |
1038 /* */ | |
1039 /* name_table :: The table of name records (`name'). */ | |
1040 /* */ | |
1041 /* os2 :: The font's OS/2 table (`OS/2'). */ | |
1042 /* */ | |
1043 /* postscript :: The font's PostScript table (`post' */ | |
1044 /* table). The PostScript glyph names are */ | |
1045 /* not loaded by the driver on face opening. */ | |
1046 /* See the `ttpost' module for more details. */ | |
1047 /* */ | |
1048 /* cmap_table :: Address of the face's `cmap' SFNT table */ | |
1049 /* in memory (it's an extracted frame). */ | |
1050 /* */ | |
1051 /* cmap_size :: The size in bytes of the `cmap_table' */ | |
1052 /* described above. */ | |
1053 /* */ | |
1054 /* goto_table :: A function called by each TrueType table */ | |
1055 /* loader to position a stream's cursor to */ | |
1056 /* the start of a given table according to */ | |
1057 /* its tag. It defaults to TT_Goto_Face but */ | |
1058 /* can be different for strange formats (e.g. */ | |
1059 /* Type 42). */ | |
1060 /* */ | |
1061 /* access_glyph_frame :: A function used to access the frame of a */ | |
1062 /* given glyph within the face's font file. */ | |
1063 /* */ | |
1064 /* forget_glyph_frame :: A function used to forget the frame of a */ | |
1065 /* given glyph when all data has been loaded. */ | |
1066 /* */ | |
1067 /* read_glyph_header :: A function used to read a glyph header. */ | |
1068 /* It must be called between an `access' and */ | |
1069 /* `forget'. */ | |
1070 /* */ | |
1071 /* read_simple_glyph :: A function used to read a simple glyph. */ | |
1072 /* It must be called after the header was */ | |
1073 /* read, and before the `forget'. */ | |
1074 /* */ | |
1075 /* read_composite_glyph :: A function used to read a composite glyph. */ | |
1076 /* It must be called after the header was */ | |
1077 /* read, and before the `forget'. */ | |
1078 /* */ | |
1079 /* sfnt :: A pointer to the SFNT service. */ | |
1080 /* */ | |
1081 /* psnames :: A pointer to the PostScript names service. */ | |
1082 /* */ | |
1083 /* hdmx :: The face's horizontal device metrics */ | |
1084 /* (`hdmx' table). This table is optional in */ | |
1085 /* TrueType/OpenType fonts. */ | |
1086 /* */ | |
1087 /* gasp :: The grid-fitting and scaling properties */ | |
1088 /* table (`gasp'). This table is optional in */ | |
1089 /* TrueType/OpenType fonts. */ | |
1090 /* */ | |
1091 /* pclt :: The `pclt' SFNT table. */ | |
1092 /* */ | |
1093 /* num_sbit_strikes :: The number of sbit strikes, i.e., bitmap */ | |
1094 /* sizes, embedded in this font. */ | |
1095 /* */ | |
1096 /* sbit_strikes :: An array of sbit strikes embedded in this */ | |
1097 /* font. This table is optional in a */ | |
1098 /* TrueType/OpenType font. */ | |
1099 /* */ | |
1100 /* num_sbit_scales :: The number of sbit scales for this font. */ | |
1101 /* */ | |
1102 /* sbit_scales :: Array of sbit scales embedded in this */ | |
1103 /* font. This table is optional in a */ | |
1104 /* TrueType/OpenType font. */ | |
1105 /* */ | |
1106 /* postscript_names :: A table used to store the Postscript names */ | |
1107 /* of the glyphs for this font. See the */ | |
1108 /* file `ttconfig.h' for comments on the */ | |
1109 /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES option. */ | |
1110 /* */ | |
1111 /* num_locations :: The number of glyph locations in this */ | |
1112 /* TrueType file. This should be */ | |
1113 /* identical to the number of glyphs. */ | |
1114 /* Ignored for Type 2 fonts. */ | |
1115 /* */ | |
1116 /* glyph_locations :: An array of longs. These are offsets to */ | |
1117 /* glyph data within the `glyf' table. */ | |
1118 /* Ignored for Type 2 font faces. */ | |
1119 /* */ | |
1120 /* glyf_len :: The length of the `glyf' table. Needed */ | |
1121 /* for malformed `loca' tables. */ | |
1122 /* */ | |
1123 /* font_program_size :: Size in bytecodes of the face's font */ | |
1124 /* program. 0 if none defined. Ignored for */ | |
1125 /* Type 2 fonts. */ | |
1126 /* */ | |
1127 /* font_program :: The face's font program (bytecode stream) */ | |
1128 /* executed at load time, also used during */ | |
1129 /* glyph rendering. Comes from the `fpgm' */ | |
1130 /* table. Ignored for Type 2 font fonts. */ | |
1131 /* */ | |
1132 /* cvt_program_size :: The size in bytecodes of the face's cvt */ | |
1133 /* program. Ignored for Type 2 fonts. */ | |
1134 /* */ | |
1135 /* cvt_program :: The face's cvt program (bytecode stream) */ | |
1136 /* executed each time an instance/size is */ | |
1137 /* changed/reset. Comes from the `prep' */ | |
1138 /* table. Ignored for Type 2 fonts. */ | |
1139 /* */ | |
1140 /* cvt_size :: Size of the control value table (in */ | |
1141 /* entries). Ignored for Type 2 fonts. */ | |
1142 /* */ | |
1143 /* cvt :: The face's original control value table. */ | |
1144 /* Coordinates are expressed in unscaled font */ | |
1145 /* units. Comes from the `cvt ' table. */ | |
1146 /* Ignored for Type 2 fonts. */ | |
1147 /* */ | |
1148 /* num_kern_pairs :: The number of kerning pairs present in the */ | |
1149 /* font file. The engine only loads the */ | |
1150 /* first horizontal format 0 kern table it */ | |
1151 /* finds in the font file. Ignored for */ | |
1152 /* Type 2 fonts. */ | |
1153 /* */ | |
1154 /* kern_table_index :: The index of the kerning table in the font */ | |
1155 /* kerning directory. Ignored for Type 2 */ | |
1156 /* fonts. */ | |
1157 /* */ | |
1158 /* interpreter :: A pointer to the TrueType bytecode */ | |
1159 /* interpreters field is also used to hook */ | |
1160 /* the debugger in `ttdebug'. */ | |
1161 /* */ | |
1162 /* unpatented_hinting :: If true, use only unpatented methods in */ | |
1163 /* the bytecode interpreter. */ | |
1164 /* */ | |
1165 /* doblend :: A boolean which is set if the font should */ | |
1166 /* be blended (this is for GX var). */ | |
1167 /* */ | |
1168 /* blend :: Contains the data needed to control GX */ | |
1169 /* variation tables (rather like Multiple */ | |
1170 /* Master data). */ | |
1171 /* */ | |
1172 /* extra :: Reserved for third-party font drivers. */ | |
1173 /* */ | |
1174 /* postscript_name :: The PS name of the font. Used by the */ | |
1175 /* postscript name service. */ | |
1176 /* */ | |
1177 typedef struct TT_FaceRec_ | |
1178 { | |
1179 FT_FaceRec root; | |
1180 | |
1181 TTC_HeaderRec ttc_header; | |
1182 | |
1183 FT_ULong format_tag; | |
1184 FT_UShort num_tables; | |
1185 TT_Table dir_tables; | |
1186 | |
1187 TT_Header header; /* TrueType header table */ | |
1188 TT_HoriHeader horizontal; /* TrueType horizontal header */ | |
1189 | |
1190 TT_MaxProfile max_profile; | |
1191 | |
1192 FT_Bool vertical_info; | |
1193 TT_VertHeader vertical; /* TT Vertical header, if present */ | |
1194 | |
1195 FT_UShort num_names; /* number of name records */ | |
1196 TT_NameTableRec name_table; /* name table */ | |
1197 | |
1198 TT_OS2 os2; /* TrueType OS/2 table */ | |
1199 TT_Postscript postscript; /* TrueType Postscript table */ | |
1200 | |
1201 FT_Byte* cmap_table; /* extracted `cmap' table */ | |
1202 FT_ULong cmap_size; | |
1203 | |
1204 TT_Loader_GotoTableFunc goto_table; | |
1205 | |
1206 TT_Loader_StartGlyphFunc access_glyph_frame; | |
1207 TT_Loader_EndGlyphFunc forget_glyph_frame; | |
1208 TT_Loader_ReadGlyphFunc read_glyph_header; | |
1209 TT_Loader_ReadGlyphFunc read_simple_glyph; | |
1210 TT_Loader_ReadGlyphFunc read_composite_glyph; | |
1211 | |
1212 /* a typeless pointer to the SFNT_Interface table used to load */ | |
1213 /* the basic TrueType tables in the face object */ | |
1214 void* sfnt; | |
1215 | |
1216 /* a typeless pointer to the FT_Service_PsCMapsRec table used to */ | |
1217 /* handle glyph names <-> unicode & Mac values */ | |
1218 void* psnames; | |
1219 | |
1220 | |
1221 /***********************************************************************/ | |
1222 /* */ | |
1223 /* Optional TrueType/OpenType tables */ | |
1224 /* */ | |
1225 /***********************************************************************/ | |
1226 | |
1227 /* grid-fitting and scaling table */ | |
1228 TT_GaspRec gasp; /* the `gasp' table */ | |
1229 | |
1230 /* PCL 5 table */ | |
1231 TT_PCLT pclt; | |
1232 | |
1233 /* embedded bitmaps support */ | |
1234 FT_ULong num_sbit_scales; | |
1235 TT_SBit_Scale sbit_scales; | |
1236 | |
1237 /* postscript names table */ | |
1238 TT_Post_NamesRec postscript_names; | |
1239 | |
1240 | |
1241 /***********************************************************************/ | |
1242 /* */ | |
1243 /* TrueType-specific fields (ignored by the OTF-Type2 driver) */ | |
1244 /* */ | |
1245 /***********************************************************************/ | |
1246 | |
1247 /* the font program, if any */ | |
1248 FT_ULong font_program_size; | |
1249 FT_Byte* font_program; | |
1250 | |
1251 /* the cvt program, if any */ | |
1252 FT_ULong cvt_program_size; | |
1253 FT_Byte* cvt_program; | |
1254 | |
1255 /* the original, unscaled, control value table */ | |
1256 FT_ULong cvt_size; | |
1257 FT_Short* cvt; | |
1258 | |
1259 /* A pointer to the bytecode interpreter to use. This is also */ | |
1260 /* used to hook the debugger for the `ttdebug' utility. */ | |
1261 TT_Interpreter interpreter; | |
1262 | |
1263 #ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING | |
1264 /* Use unpatented hinting only. */ | |
1265 FT_Bool unpatented_hinting; | |
1266 #endif | |
1267 | |
1268 /***********************************************************************/ | |
1269 /* */ | |
1270 /* Other tables or fields. This is used by derivative formats like */ | |
1271 /* OpenType. */ | |
1272 /* */ | |
1273 /***********************************************************************/ | |
1274 | |
1275 FT_Generic extra; | |
1276 | |
1277 const char* postscript_name; | |
1278 | |
1279 FT_ULong glyf_len; | |
1280 | |
1281 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT | |
1282 FT_Bool doblend; | |
1283 GX_Blend blend; | |
1284 #endif | |
1285 | |
1286 /* since version 2.2 */ | |
1287 | |
1288 FT_Byte* horz_metrics; | |
1289 FT_ULong horz_metrics_size; | |
1290 | |
1291 FT_Byte* vert_metrics; | |
1292 FT_ULong vert_metrics_size; | |
1293 | |
1294 FT_ULong num_locations; /* in broken TTF, gid > 0xFFFF */ | |
1295 FT_Byte* glyph_locations; | |
1296 | |
1297 FT_Byte* hdmx_table; | |
1298 FT_ULong hdmx_table_size; | |
1299 FT_UInt hdmx_record_count; | |
1300 FT_ULong hdmx_record_size; | |
1301 FT_Byte* hdmx_record_sizes; | |
1302 | |
1303 FT_Byte* sbit_table; | |
1304 FT_ULong sbit_table_size; | |
1305 FT_UInt sbit_num_strikes; | |
1306 | |
1307 FT_Byte* kern_table; | |
1308 FT_ULong kern_table_size; | |
1309 FT_UInt num_kern_tables; | |
1310 FT_UInt32 kern_avail_bits; | |
1311 FT_UInt32 kern_order_bits; | |
1312 | |
1313 #ifdef TT_CONFIG_OPTION_BDF | |
1314 TT_BDFRec bdf; | |
1315 #endif /* TT_CONFIG_OPTION_BDF */ | |
1316 | |
1317 /* since 2.3.0 */ | |
1318 FT_ULong horz_metrics_offset; | |
1319 FT_ULong vert_metrics_offset; | |
1320 | |
1321 #ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING | |
1322 /* since 2.4.12 */ | |
1323 FT_ULong sph_found_func_flags; /* special functions found */ | |
1324 /* for this face */ | |
1325 FT_Bool sph_compatibility_mode; | |
1326 #endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */ | |
1327 | |
1328 } TT_FaceRec; | |
1329 | |
1330 | |
1331 /*************************************************************************/ | |
1332 /* */ | |
1333 /* <Struct> */ | |
1334 /* TT_GlyphZoneRec */ | |
1335 /* */ | |
1336 /* <Description> */ | |
1337 /* A glyph zone is used to load, scale and hint glyph outline */ | |
1338 /* coordinates. */ | |
1339 /* */ | |
1340 /* <Fields> */ | |
1341 /* memory :: A handle to the memory manager. */ | |
1342 /* */ | |
1343 /* max_points :: The maximum size in points of the zone. */ | |
1344 /* */ | |
1345 /* max_contours :: Max size in links contours of the zone. */ | |
1346 /* */ | |
1347 /* n_points :: The current number of points in the zone. */ | |
1348 /* */ | |
1349 /* n_contours :: The current number of contours in the zone. */ | |
1350 /* */ | |
1351 /* org :: The original glyph coordinates (font */ | |
1352 /* units/scaled). */ | |
1353 /* */ | |
1354 /* cur :: The current glyph coordinates (scaled/hinted). */ | |
1355 /* */ | |
1356 /* tags :: The point control tags. */ | |
1357 /* */ | |
1358 /* contours :: The contours end points. */ | |
1359 /* */ | |
1360 /* first_point :: Offset of the current subglyph's first point. */ | |
1361 /* */ | |
1362 typedef struct TT_GlyphZoneRec_ | |
1363 { | |
1364 FT_Memory memory; | |
1365 FT_UShort max_points; | |
1366 FT_UShort max_contours; | |
1367 FT_UShort n_points; /* number of points in zone */ | |
1368 FT_Short n_contours; /* number of contours */ | |
1369 | |
1370 FT_Vector* org; /* original point coordinates */ | |
1371 FT_Vector* cur; /* current point coordinates */ | |
1372 FT_Vector* orus; /* original (unscaled) point coordinates */ | |
1373 | |
1374 FT_Byte* tags; /* current touch flags */ | |
1375 FT_UShort* contours; /* contour end points */ | |
1376 | |
1377 FT_UShort first_point; /* offset of first (#0) point */ | |
1378 | |
1379 } TT_GlyphZoneRec, *TT_GlyphZone; | |
1380 | |
1381 | |
1382 /* handle to execution context */ | |
1383 typedef struct TT_ExecContextRec_* TT_ExecContext; | |
1384 | |
1385 /* glyph loader structure */ | |
1386 typedef struct TT_LoaderRec_ | |
1387 { | |
1388 FT_Face face; | |
1389 FT_Size size; | |
1390 FT_GlyphSlot glyph; | |
1391 FT_GlyphLoader gloader; | |
1392 | |
1393 FT_ULong load_flags; | |
1394 FT_UInt glyph_index; | |
1395 | |
1396 FT_Stream stream; | |
1397 FT_Int byte_len; | |
1398 | |
1399 FT_Short n_contours; | |
1400 FT_BBox bbox; | |
1401 FT_Int left_bearing; | |
1402 FT_Int advance; | |
1403 FT_Int linear; | |
1404 FT_Bool linear_def; | |
1405 FT_Bool preserve_pps; | |
1406 FT_Vector pp1; | |
1407 FT_Vector pp2; | |
1408 | |
1409 FT_ULong glyf_offset; | |
1410 | |
1411 /* the zone where we load our glyphs */ | |
1412 TT_GlyphZoneRec base; | |
1413 TT_GlyphZoneRec zone; | |
1414 | |
1415 TT_ExecContext exec; | |
1416 FT_Byte* instructions; | |
1417 FT_ULong ins_pos; | |
1418 | |
1419 /* for possible extensibility in other formats */ | |
1420 void* other; | |
1421 | |
1422 /* since version 2.1.8 */ | |
1423 FT_Int top_bearing; | |
1424 FT_Int vadvance; | |
1425 FT_Vector pp3; | |
1426 FT_Vector pp4; | |
1427 | |
1428 /* since version 2.2.1 */ | |
1429 FT_Byte* cursor; | |
1430 FT_Byte* limit; | |
1431 | |
1432 } TT_LoaderRec; | |
1433 | |
1434 | |
1435 FT_END_HEADER | |
1436 | |
1437 #endif /* __TTTYPES_H__ */ | |
1438 | |
1439 | |
1440 /* END */ | |
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