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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 "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 */ | |
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