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1 | /***************************************************************************/ |
2 | /* */ | |
3 | /* t1tables.h */ | |
4 | /* */ | |
5 | /* Basic Type 1/Type 2 tables definitions and interface (specification */ | |
6 | /* only). */ | |
7 | /* */ | |
8 | /* Copyright 1996-2004, 2006, 2008, 2009, 2011 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 __T1TABLES_H__ | |
21 | #define __T1TABLES_H__ | |
22 | ||
23 | ||
24 | #include <ft2build.h> | |
25 | #include FT_FREETYPE_H | |
26 | ||
27 | #ifdef FREETYPE_H | |
28 | #error "freetype.h of FreeType 1 has been loaded!" | |
29 | #error "Please fix the directory search order for header files" | |
30 | #error "so that freetype.h of FreeType 2 is found first." | |
31 | #endif | |
32 | ||
33 | ||
34 | FT_BEGIN_HEADER | |
35 | ||
36 | ||
37 | /*************************************************************************/ | |
38 | /* */ | |
39 | /* <Section> */ | |
40 | /* type1_tables */ | |
41 | /* */ | |
42 | /* <Title> */ | |
43 | /* Type 1 Tables */ | |
44 | /* */ | |
45 | /* <Abstract> */ | |
46 | /* Type~1 (PostScript) specific font tables. */ | |
47 | /* */ | |
48 | /* <Description> */ | |
49 | /* This section contains the definition of Type 1-specific tables, */ | |
50 | /* including structures related to other PostScript font formats. */ | |
51 | /* */ | |
52 | /*************************************************************************/ | |
53 | ||
54 | ||
55 | /* Note that we separate font data in PS_FontInfoRec and PS_PrivateRec */ | |
56 | /* structures in order to support Multiple Master fonts. */ | |
57 | ||
58 | ||
59 | /*************************************************************************/ | |
60 | /* */ | |
61 | /* <Struct> */ | |
62 | /* PS_FontInfoRec */ | |
63 | /* */ | |
64 | /* <Description> */ | |
65 | /* A structure used to model a Type~1 or Type~2 FontInfo dictionary. */ | |
66 | /* Note that for Multiple Master fonts, each instance has its own */ | |
67 | /* FontInfo dictionary. */ | |
68 | /* */ | |
69 | typedef struct PS_FontInfoRec_ | |
70 | { | |
71 | FT_String* version; | |
72 | FT_String* notice; | |
73 | FT_String* full_name; | |
74 | FT_String* family_name; | |
75 | FT_String* weight; | |
76 | FT_Long italic_angle; | |
77 | FT_Bool is_fixed_pitch; | |
78 | FT_Short underline_position; | |
79 | FT_UShort underline_thickness; | |
80 | ||
81 | } PS_FontInfoRec; | |
82 | ||
83 | ||
84 | /*************************************************************************/ | |
85 | /* */ | |
86 | /* <Struct> */ | |
87 | /* PS_FontInfo */ | |
88 | /* */ | |
89 | /* <Description> */ | |
90 | /* A handle to a @PS_FontInfoRec structure. */ | |
91 | /* */ | |
92 | typedef struct PS_FontInfoRec_* PS_FontInfo; | |
93 | ||
94 | ||
95 | /*************************************************************************/ | |
96 | /* */ | |
97 | /* <Struct> */ | |
98 | /* T1_FontInfo */ | |
99 | /* */ | |
100 | /* <Description> */ | |
101 | /* This type is equivalent to @PS_FontInfoRec. It is deprecated but */ | |
102 | /* kept to maintain source compatibility between various versions of */ | |
103 | /* FreeType. */ | |
104 | /* */ | |
105 | typedef PS_FontInfoRec T1_FontInfo; | |
106 | ||
107 | ||
108 | /*************************************************************************/ | |
109 | /* */ | |
110 | /* <Struct> */ | |
111 | /* PS_PrivateRec */ | |
112 | /* */ | |
113 | /* <Description> */ | |
114 | /* A structure used to model a Type~1 or Type~2 private dictionary. */ | |
115 | /* Note that for Multiple Master fonts, each instance has its own */ | |
116 | /* Private dictionary. */ | |
117 | /* */ | |
118 | typedef struct PS_PrivateRec_ | |
119 | { | |
120 | FT_Int unique_id; | |
121 | FT_Int lenIV; | |
122 | ||
123 | FT_Byte num_blue_values; | |
124 | FT_Byte num_other_blues; | |
125 | FT_Byte num_family_blues; | |
126 | FT_Byte num_family_other_blues; | |
127 | ||
128 | FT_Short blue_values[14]; | |
129 | FT_Short other_blues[10]; | |
130 | ||
131 | FT_Short family_blues [14]; | |
132 | FT_Short family_other_blues[10]; | |
133 | ||
134 | FT_Fixed blue_scale; | |
135 | FT_Int blue_shift; | |
136 | FT_Int blue_fuzz; | |
137 | ||
138 | FT_UShort standard_width[1]; | |
139 | FT_UShort standard_height[1]; | |
140 | ||
141 | FT_Byte num_snap_widths; | |
142 | FT_Byte num_snap_heights; | |
143 | FT_Bool force_bold; | |
144 | FT_Bool round_stem_up; | |
145 | ||
146 | FT_Short snap_widths [13]; /* including std width */ | |
147 | FT_Short snap_heights[13]; /* including std height */ | |
148 | ||
149 | FT_Fixed expansion_factor; | |
150 | ||
151 | FT_Long language_group; | |
152 | FT_Long password; | |
153 | ||
154 | FT_Short min_feature[2]; | |
155 | ||
156 | } PS_PrivateRec; | |
157 | ||
158 | ||
159 | /*************************************************************************/ | |
160 | /* */ | |
161 | /* <Struct> */ | |
162 | /* PS_Private */ | |
163 | /* */ | |
164 | /* <Description> */ | |
165 | /* A handle to a @PS_PrivateRec structure. */ | |
166 | /* */ | |
167 | typedef struct PS_PrivateRec_* PS_Private; | |
168 | ||
169 | ||
170 | /*************************************************************************/ | |
171 | /* */ | |
172 | /* <Struct> */ | |
173 | /* T1_Private */ | |
174 | /* */ | |
175 | /* <Description> */ | |
176 | /* This type is equivalent to @PS_PrivateRec. It is deprecated but */ | |
177 | /* kept to maintain source compatibility between various versions of */ | |
178 | /* FreeType. */ | |
179 | /* */ | |
180 | typedef PS_PrivateRec T1_Private; | |
181 | ||
182 | ||
183 | /*************************************************************************/ | |
184 | /* */ | |
185 | /* <Enum> */ | |
186 | /* T1_Blend_Flags */ | |
187 | /* */ | |
188 | /* <Description> */ | |
189 | /* A set of flags used to indicate which fields are present in a */ | |
190 | /* given blend dictionary (font info or private). Used to support */ | |
191 | /* Multiple Masters fonts. */ | |
192 | /* */ | |
193 | typedef enum T1_Blend_Flags_ | |
194 | { | |
195 | /*# required fields in a FontInfo blend dictionary */ | |
196 | T1_BLEND_UNDERLINE_POSITION = 0, | |
197 | T1_BLEND_UNDERLINE_THICKNESS, | |
198 | T1_BLEND_ITALIC_ANGLE, | |
199 | ||
200 | /*# required fields in a Private blend dictionary */ | |
201 | T1_BLEND_BLUE_VALUES, | |
202 | T1_BLEND_OTHER_BLUES, | |
203 | T1_BLEND_STANDARD_WIDTH, | |
204 | T1_BLEND_STANDARD_HEIGHT, | |
205 | T1_BLEND_STEM_SNAP_WIDTHS, | |
206 | T1_BLEND_STEM_SNAP_HEIGHTS, | |
207 | T1_BLEND_BLUE_SCALE, | |
208 | T1_BLEND_BLUE_SHIFT, | |
209 | T1_BLEND_FAMILY_BLUES, | |
210 | T1_BLEND_FAMILY_OTHER_BLUES, | |
211 | T1_BLEND_FORCE_BOLD, | |
212 | ||
213 | /*# never remove */ | |
214 | T1_BLEND_MAX | |
215 | ||
216 | } T1_Blend_Flags; | |
217 | ||
218 | /* */ | |
219 | ||
220 | ||
221 | /*# backwards compatible definitions */ | |
222 | #define t1_blend_underline_position T1_BLEND_UNDERLINE_POSITION | |
223 | #define t1_blend_underline_thickness T1_BLEND_UNDERLINE_THICKNESS | |
224 | #define t1_blend_italic_angle T1_BLEND_ITALIC_ANGLE | |
225 | #define t1_blend_blue_values T1_BLEND_BLUE_VALUES | |
226 | #define t1_blend_other_blues T1_BLEND_OTHER_BLUES | |
227 | #define t1_blend_standard_widths T1_BLEND_STANDARD_WIDTH | |
228 | #define t1_blend_standard_height T1_BLEND_STANDARD_HEIGHT | |
229 | #define t1_blend_stem_snap_widths T1_BLEND_STEM_SNAP_WIDTHS | |
230 | #define t1_blend_stem_snap_heights T1_BLEND_STEM_SNAP_HEIGHTS | |
231 | #define t1_blend_blue_scale T1_BLEND_BLUE_SCALE | |
232 | #define t1_blend_blue_shift T1_BLEND_BLUE_SHIFT | |
233 | #define t1_blend_family_blues T1_BLEND_FAMILY_BLUES | |
234 | #define t1_blend_family_other_blues T1_BLEND_FAMILY_OTHER_BLUES | |
235 | #define t1_blend_force_bold T1_BLEND_FORCE_BOLD | |
236 | #define t1_blend_max T1_BLEND_MAX | |
237 | ||
238 | ||
239 | /* maximum number of Multiple Masters designs, as defined in the spec */ | |
240 | #define T1_MAX_MM_DESIGNS 16 | |
241 | ||
242 | /* maximum number of Multiple Masters axes, as defined in the spec */ | |
243 | #define T1_MAX_MM_AXIS 4 | |
244 | ||
245 | /* maximum number of elements in a design map */ | |
246 | #define T1_MAX_MM_MAP_POINTS 20 | |
247 | ||
248 | ||
249 | /* this structure is used to store the BlendDesignMap entry for an axis */ | |
250 | typedef struct PS_DesignMap_ | |
251 | { | |
252 | FT_Byte num_points; | |
253 | FT_Long* design_points; | |
254 | FT_Fixed* blend_points; | |
255 | ||
256 | } PS_DesignMapRec, *PS_DesignMap; | |
257 | ||
258 | /* backwards-compatible definition */ | |
259 | typedef PS_DesignMapRec T1_DesignMap; | |
260 | ||
261 | ||
262 | typedef struct PS_BlendRec_ | |
263 | { | |
264 | FT_UInt num_designs; | |
265 | FT_UInt num_axis; | |
266 | ||
267 | FT_String* axis_names[T1_MAX_MM_AXIS]; | |
268 | FT_Fixed* design_pos[T1_MAX_MM_DESIGNS]; | |
269 | PS_DesignMapRec design_map[T1_MAX_MM_AXIS]; | |
270 | ||
271 | FT_Fixed* weight_vector; | |
272 | FT_Fixed* default_weight_vector; | |
273 | ||
274 | PS_FontInfo font_infos[T1_MAX_MM_DESIGNS + 1]; | |
275 | PS_Private privates [T1_MAX_MM_DESIGNS + 1]; | |
276 | ||
277 | FT_ULong blend_bitflags; | |
278 | ||
279 | FT_BBox* bboxes [T1_MAX_MM_DESIGNS + 1]; | |
280 | ||
281 | /* since 2.3.0 */ | |
282 | ||
283 | /* undocumented, optional: the default design instance; */ | |
284 | /* corresponds to default_weight_vector -- */ | |
285 | /* num_default_design_vector == 0 means it is not present */ | |
286 | /* in the font and associated metrics files */ | |
287 | FT_UInt default_design_vector[T1_MAX_MM_DESIGNS]; | |
288 | FT_UInt num_default_design_vector; | |
289 | ||
290 | } PS_BlendRec, *PS_Blend; | |
291 | ||
292 | ||
293 | /* backwards-compatible definition */ | |
294 | typedef PS_BlendRec T1_Blend; | |
295 | ||
296 | ||
297 | /*************************************************************************/ | |
298 | /* */ | |
299 | /* <Struct> */ | |
300 | /* CID_FaceDictRec */ | |
301 | /* */ | |
302 | /* <Description> */ | |
303 | /* A structure used to represent data in a CID top-level dictionary. */ | |
304 | /* */ | |
305 | typedef struct CID_FaceDictRec_ | |
306 | { | |
307 | PS_PrivateRec private_dict; | |
308 | ||
309 | FT_UInt len_buildchar; | |
310 | FT_Fixed forcebold_threshold; | |
311 | FT_Pos stroke_width; | |
312 | FT_Fixed expansion_factor; | |
313 | ||
314 | FT_Byte paint_type; | |
315 | FT_Byte font_type; | |
316 | FT_Matrix font_matrix; | |
317 | FT_Vector font_offset; | |
318 | ||
319 | FT_UInt num_subrs; | |
320 | FT_ULong subrmap_offset; | |
321 | FT_Int sd_bytes; | |
322 | ||
323 | } CID_FaceDictRec; | |
324 | ||
325 | ||
326 | /*************************************************************************/ | |
327 | /* */ | |
328 | /* <Struct> */ | |
329 | /* CID_FaceDict */ | |
330 | /* */ | |
331 | /* <Description> */ | |
332 | /* A handle to a @CID_FaceDictRec structure. */ | |
333 | /* */ | |
334 | typedef struct CID_FaceDictRec_* CID_FaceDict; | |
335 | ||
336 | /* */ | |
337 | ||
338 | ||
339 | /* backwards-compatible definition */ | |
340 | typedef CID_FaceDictRec CID_FontDict; | |
341 | ||
342 | ||
343 | /*************************************************************************/ | |
344 | /* */ | |
345 | /* <Struct> */ | |
346 | /* CID_FaceInfoRec */ | |
347 | /* */ | |
348 | /* <Description> */ | |
349 | /* A structure used to represent CID Face information. */ | |
350 | /* */ | |
351 | typedef struct CID_FaceInfoRec_ | |
352 | { | |
353 | FT_String* cid_font_name; | |
354 | FT_Fixed cid_version; | |
355 | FT_Int cid_font_type; | |
356 | ||
357 | FT_String* registry; | |
358 | FT_String* ordering; | |
359 | FT_Int supplement; | |
360 | ||
361 | PS_FontInfoRec font_info; | |
362 | FT_BBox font_bbox; | |
363 | FT_ULong uid_base; | |
364 | ||
365 | FT_Int num_xuid; | |
366 | FT_ULong xuid[16]; | |
367 | ||
368 | FT_ULong cidmap_offset; | |
369 | FT_Int fd_bytes; | |
370 | FT_Int gd_bytes; | |
371 | FT_ULong cid_count; | |
372 | ||
373 | FT_Int num_dicts; | |
374 | CID_FaceDict font_dicts; | |
375 | ||
376 | FT_ULong data_offset; | |
377 | ||
378 | } CID_FaceInfoRec; | |
379 | ||
380 | ||
381 | /*************************************************************************/ | |
382 | /* */ | |
383 | /* <Struct> */ | |
384 | /* CID_FaceInfo */ | |
385 | /* */ | |
386 | /* <Description> */ | |
387 | /* A handle to a @CID_FaceInfoRec structure. */ | |
388 | /* */ | |
389 | typedef struct CID_FaceInfoRec_* CID_FaceInfo; | |
390 | ||
391 | ||
392 | /*************************************************************************/ | |
393 | /* */ | |
394 | /* <Struct> */ | |
395 | /* CID_Info */ | |
396 | /* */ | |
397 | /* <Description> */ | |
398 | /* This type is equivalent to @CID_FaceInfoRec. It is deprecated but */ | |
399 | /* kept to maintain source compatibility between various versions of */ | |
400 | /* FreeType. */ | |
401 | /* */ | |
402 | typedef CID_FaceInfoRec CID_Info; | |
403 | ||
404 | ||
405 | /************************************************************************ | |
406 | * | |
407 | * @function: | |
408 | * FT_Has_PS_Glyph_Names | |
409 | * | |
410 | * @description: | |
411 | * Return true if a given face provides reliable PostScript glyph | |
412 | * names. This is similar to using the @FT_HAS_GLYPH_NAMES macro, | |
413 | * except that certain fonts (mostly TrueType) contain incorrect | |
414 | * glyph name tables. | |
415 | * | |
416 | * When this function returns true, the caller is sure that the glyph | |
417 | * names returned by @FT_Get_Glyph_Name are reliable. | |
418 | * | |
419 | * @input: | |
420 | * face :: | |
421 | * face handle | |
422 | * | |
423 | * @return: | |
424 | * Boolean. True if glyph names are reliable. | |
425 | * | |
426 | */ | |
427 | FT_EXPORT( FT_Int ) | |
428 | FT_Has_PS_Glyph_Names( FT_Face face ); | |
429 | ||
430 | ||
431 | /************************************************************************ | |
432 | * | |
433 | * @function: | |
434 | * FT_Get_PS_Font_Info | |
435 | * | |
436 | * @description: | |
437 | * Retrieve the @PS_FontInfoRec structure corresponding to a given | |
438 | * PostScript font. | |
439 | * | |
440 | * @input: | |
441 | * face :: | |
442 | * PostScript face handle. | |
443 | * | |
444 | * @output: | |
445 | * afont_info :: | |
446 | * Output font info structure pointer. | |
447 | * | |
448 | * @return: | |
449 | * FreeType error code. 0~means success. | |
450 | * | |
451 | * @note: | |
452 | * The string pointers within the font info structure are owned by | |
453 | * the face and don't need to be freed by the caller. | |
454 | * | |
455 | * If the font's format is not PostScript-based, this function will | |
456 | * return the `FT_Err_Invalid_Argument' error code. | |
457 | * | |
458 | */ | |
459 | FT_EXPORT( FT_Error ) | |
460 | FT_Get_PS_Font_Info( FT_Face face, | |
461 | PS_FontInfo afont_info ); | |
462 | ||
463 | ||
464 | /************************************************************************ | |
465 | * | |
466 | * @function: | |
467 | * FT_Get_PS_Font_Private | |
468 | * | |
469 | * @description: | |
470 | * Retrieve the @PS_PrivateRec structure corresponding to a given | |
471 | * PostScript font. | |
472 | * | |
473 | * @input: | |
474 | * face :: | |
475 | * PostScript face handle. | |
476 | * | |
477 | * @output: | |
478 | * afont_private :: | |
479 | * Output private dictionary structure pointer. | |
480 | * | |
481 | * @return: | |
482 | * FreeType error code. 0~means success. | |
483 | * | |
484 | * @note: | |
485 | * The string pointers within the @PS_PrivateRec structure are owned by | |
486 | * the face and don't need to be freed by the caller. | |
487 | * | |
488 | * If the font's format is not PostScript-based, this function returns | |
489 | * the `FT_Err_Invalid_Argument' error code. | |
490 | * | |
491 | */ | |
492 | FT_EXPORT( FT_Error ) | |
493 | FT_Get_PS_Font_Private( FT_Face face, | |
494 | PS_Private afont_private ); | |
495 | ||
496 | ||
497 | /*************************************************************************/ | |
498 | /* */ | |
499 | /* <Enum> */ | |
500 | /* T1_EncodingType */ | |
501 | /* */ | |
502 | /* <Description> */ | |
503 | /* An enumeration describing the `Encoding' entry in a Type 1 */ | |
504 | /* dictionary. */ | |
505 | /* */ | |
506 | typedef enum T1_EncodingType_ | |
507 | { | |
508 | T1_ENCODING_TYPE_NONE = 0, | |
509 | T1_ENCODING_TYPE_ARRAY, | |
510 | T1_ENCODING_TYPE_STANDARD, | |
511 | T1_ENCODING_TYPE_ISOLATIN1, | |
512 | T1_ENCODING_TYPE_EXPERT | |
513 | ||
514 | } T1_EncodingType; | |
515 | ||
516 | ||
517 | /*************************************************************************/ | |
518 | /* */ | |
519 | /* <Enum> */ | |
520 | /* PS_Dict_Keys */ | |
521 | /* */ | |
522 | /* <Description> */ | |
523 | /* An enumeration used in calls to @FT_Get_PS_Font_Value to identify */ | |
524 | /* the Type~1 dictionary entry to retrieve. */ | |
525 | /* */ | |
526 | typedef enum PS_Dict_Keys_ | |
527 | { | |
528 | /* conventionally in the font dictionary */ | |
529 | PS_DICT_FONT_TYPE, /* FT_Byte */ | |
530 | PS_DICT_FONT_MATRIX, /* FT_Fixed */ | |
531 | PS_DICT_FONT_BBOX, /* FT_Fixed */ | |
532 | PS_DICT_PAINT_TYPE, /* FT_Byte */ | |
533 | PS_DICT_FONT_NAME, /* FT_String* */ | |
534 | PS_DICT_UNIQUE_ID, /* FT_Int */ | |
535 | PS_DICT_NUM_CHAR_STRINGS, /* FT_Int */ | |
536 | PS_DICT_CHAR_STRING_KEY, /* FT_String* */ | |
537 | PS_DICT_CHAR_STRING, /* FT_String* */ | |
538 | PS_DICT_ENCODING_TYPE, /* T1_EncodingType */ | |
539 | PS_DICT_ENCODING_ENTRY, /* FT_String* */ | |
540 | ||
541 | /* conventionally in the font Private dictionary */ | |
542 | PS_DICT_NUM_SUBRS, /* FT_Int */ | |
543 | PS_DICT_SUBR, /* FT_String* */ | |
544 | PS_DICT_STD_HW, /* FT_UShort */ | |
545 | PS_DICT_STD_VW, /* FT_UShort */ | |
546 | PS_DICT_NUM_BLUE_VALUES, /* FT_Byte */ | |
547 | PS_DICT_BLUE_VALUE, /* FT_Short */ | |
548 | PS_DICT_BLUE_FUZZ, /* FT_Int */ | |
549 | PS_DICT_NUM_OTHER_BLUES, /* FT_Byte */ | |
550 | PS_DICT_OTHER_BLUE, /* FT_Short */ | |
551 | PS_DICT_NUM_FAMILY_BLUES, /* FT_Byte */ | |
552 | PS_DICT_FAMILY_BLUE, /* FT_Short */ | |
553 | PS_DICT_NUM_FAMILY_OTHER_BLUES, /* FT_Byte */ | |
554 | PS_DICT_FAMILY_OTHER_BLUE, /* FT_Short */ | |
555 | PS_DICT_BLUE_SCALE, /* FT_Fixed */ | |
556 | PS_DICT_BLUE_SHIFT, /* FT_Int */ | |
557 | PS_DICT_NUM_STEM_SNAP_H, /* FT_Byte */ | |
558 | PS_DICT_STEM_SNAP_H, /* FT_Short */ | |
559 | PS_DICT_NUM_STEM_SNAP_V, /* FT_Byte */ | |
560 | PS_DICT_STEM_SNAP_V, /* FT_Short */ | |
561 | PS_DICT_FORCE_BOLD, /* FT_Bool */ | |
562 | PS_DICT_RND_STEM_UP, /* FT_Bool */ | |
563 | PS_DICT_MIN_FEATURE, /* FT_Short */ | |
564 | PS_DICT_LEN_IV, /* FT_Int */ | |
565 | PS_DICT_PASSWORD, /* FT_Long */ | |
566 | PS_DICT_LANGUAGE_GROUP, /* FT_Long */ | |
567 | ||
568 | /* conventionally in the font FontInfo dictionary */ | |
569 | PS_DICT_VERSION, /* FT_String* */ | |
570 | PS_DICT_NOTICE, /* FT_String* */ | |
571 | PS_DICT_FULL_NAME, /* FT_String* */ | |
572 | PS_DICT_FAMILY_NAME, /* FT_String* */ | |
573 | PS_DICT_WEIGHT, /* FT_String* */ | |
574 | PS_DICT_IS_FIXED_PITCH, /* FT_Bool */ | |
575 | PS_DICT_UNDERLINE_POSITION, /* FT_Short */ | |
576 | PS_DICT_UNDERLINE_THICKNESS, /* FT_UShort */ | |
577 | PS_DICT_FS_TYPE, /* FT_UShort */ | |
578 | PS_DICT_ITALIC_ANGLE, /* FT_Long */ | |
579 | ||
580 | PS_DICT_MAX = PS_DICT_ITALIC_ANGLE | |
581 | ||
582 | } PS_Dict_Keys; | |
583 | ||
584 | ||
585 | /************************************************************************ | |
586 | * | |
587 | * @function: | |
588 | * FT_Get_PS_Font_Value | |
589 | * | |
590 | * @description: | |
591 | * Retrieve the value for the supplied key from a PostScript font. | |
592 | * | |
593 | * @input: | |
594 | * face :: | |
595 | * PostScript face handle. | |
596 | * | |
597 | * key :: | |
598 | * An enumeration value representing the dictionary key to retrieve. | |
599 | * | |
600 | * idx :: | |
601 | * For array values, this specifies the index to be returned. | |
602 | * | |
603 | * value :: | |
604 | * A pointer to memory into which to write the value. | |
605 | * | |
606 | * valen_len :: | |
607 | * The size, in bytes, of the memory supplied for the value. | |
608 | * | |
609 | * @output: | |
610 | * value :: | |
611 | * The value matching the above key, if it exists. | |
612 | * | |
613 | * @return: | |
614 | * The amount of memory (in bytes) required to hold the requested | |
615 | * value (if it exists, -1 otherwise). | |
616 | * | |
617 | * @note: | |
618 | * The values returned are not pointers into the internal structures of | |
619 | * the face, but are `fresh' copies, so that the memory containing them | |
620 | * belongs to the calling application. This also enforces the | |
621 | * `read-only' nature of these values, i.e., this function cannot be | |
622 | * used to manipulate the face. | |
623 | * | |
624 | * `value' is a void pointer because the values returned can be of | |
625 | * various types. | |
626 | * | |
627 | * If either `value' is NULL or `value_len' is too small, just the | |
628 | * required memory size for the requested entry is returned. | |
629 | * | |
630 | * The `idx' parameter is used, not only to retrieve elements of, for | |
631 | * example, the FontMatrix or FontBBox, but also to retrieve name keys | |
632 | * from the CharStrings dictionary, and the charstrings themselves. It | |
633 | * is ignored for atomic values. | |
634 | * | |
635 | * PS_DICT_BLUE_SCALE returns a value that is scaled up by 1000. To | |
636 | * get the value as in the font stream, you need to divide by | |
637 | * 65536000.0 (to remove the FT_Fixed scale, and the x1000 scale). | |
638 | * | |
639 | * IMPORTANT: Only key/value pairs read by the FreeType interpreter can | |
640 | * be retrieved. So, for example, PostScript procedures such as NP, | |
641 | * ND, and RD are not available. Arbitrary keys are, obviously, not be | |
642 | * available either. | |
643 | * | |
644 | * If the font's format is not PostScript-based, this function returns | |
645 | * the `FT_Err_Invalid_Argument' error code. | |
646 | * | |
647 | */ | |
648 | FT_EXPORT( FT_Long ) | |
649 | FT_Get_PS_Font_Value( FT_Face face, | |
650 | PS_Dict_Keys key, | |
651 | FT_UInt idx, | |
652 | void *value, | |
653 | FT_Long value_len ); | |
654 | ||
655 | /* */ | |
656 | ||
657 | FT_END_HEADER | |
658 | ||
659 | #endif /* __T1TABLES_H__ */ | |
660 | ||
661 | ||
662 | /* END */ |