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[FREETYPE] Update to v2.5.5. CORE-8888
[reactos.git] / reactos / lib / 3rdparty / freetype / include / t1tables.h
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, 2014 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 /* <Order> */
53 /* PS_FontInfoRec */
54 /* PS_FontInfo */
55 /* PS_PrivateRec */
56 /* PS_Private */
57 /* */
58 /* CID_FaceDictRec */
59 /* CID_FaceDict */
60 /* CID_FaceInfoRec */
61 /* CID_FaceInfo */
62 /* */
63 /* FT_Has_PS_Glyph_Names */
64 /* FT_Get_PS_Font_Info */
65 /* FT_Get_PS_Font_Private */
66 /* FT_Get_PS_Font_Value */
67 /* */
68 /* T1_Blend_Flags */
69 /* T1_EncodingType */
70 /* PS_Dict_Keys */
71 /* */
72 /*************************************************************************/
73
74
75 /* Note that we separate font data in PS_FontInfoRec and PS_PrivateRec */
76 /* structures in order to support Multiple Master fonts. */
77
78
79 /*************************************************************************/
80 /* */
81 /* <Struct> */
82 /* PS_FontInfoRec */
83 /* */
84 /* <Description> */
85 /* A structure used to model a Type~1 or Type~2 FontInfo dictionary. */
86 /* Note that for Multiple Master fonts, each instance has its own */
87 /* FontInfo dictionary. */
88 /* */
89 typedef struct PS_FontInfoRec_
90 {
91 FT_String* version;
92 FT_String* notice;
93 FT_String* full_name;
94 FT_String* family_name;
95 FT_String* weight;
96 FT_Long italic_angle;
97 FT_Bool is_fixed_pitch;
98 FT_Short underline_position;
99 FT_UShort underline_thickness;
100
101 } PS_FontInfoRec;
102
103
104 /*************************************************************************/
105 /* */
106 /* <Struct> */
107 /* PS_FontInfo */
108 /* */
109 /* <Description> */
110 /* A handle to a @PS_FontInfoRec structure. */
111 /* */
112 typedef struct PS_FontInfoRec_* PS_FontInfo;
113
114
115 /*************************************************************************/
116 /* */
117 /* <Struct> */
118 /* T1_FontInfo */
119 /* */
120 /* <Description> */
121 /* This type is equivalent to @PS_FontInfoRec. It is deprecated but */
122 /* kept to maintain source compatibility between various versions of */
123 /* FreeType. */
124 /* */
125 typedef PS_FontInfoRec T1_FontInfo;
126
127
128 /*************************************************************************/
129 /* */
130 /* <Struct> */
131 /* PS_PrivateRec */
132 /* */
133 /* <Description> */
134 /* A structure used to model a Type~1 or Type~2 private dictionary. */
135 /* Note that for Multiple Master fonts, each instance has its own */
136 /* Private dictionary. */
137 /* */
138 typedef struct PS_PrivateRec_
139 {
140 FT_Int unique_id;
141 FT_Int lenIV;
142
143 FT_Byte num_blue_values;
144 FT_Byte num_other_blues;
145 FT_Byte num_family_blues;
146 FT_Byte num_family_other_blues;
147
148 FT_Short blue_values[14];
149 FT_Short other_blues[10];
150
151 FT_Short family_blues [14];
152 FT_Short family_other_blues[10];
153
154 FT_Fixed blue_scale;
155 FT_Int blue_shift;
156 FT_Int blue_fuzz;
157
158 FT_UShort standard_width[1];
159 FT_UShort standard_height[1];
160
161 FT_Byte num_snap_widths;
162 FT_Byte num_snap_heights;
163 FT_Bool force_bold;
164 FT_Bool round_stem_up;
165
166 FT_Short snap_widths [13]; /* including std width */
167 FT_Short snap_heights[13]; /* including std height */
168
169 FT_Fixed expansion_factor;
170
171 FT_Long language_group;
172 FT_Long password;
173
174 FT_Short min_feature[2];
175
176 } PS_PrivateRec;
177
178
179 /*************************************************************************/
180 /* */
181 /* <Struct> */
182 /* PS_Private */
183 /* */
184 /* <Description> */
185 /* A handle to a @PS_PrivateRec structure. */
186 /* */
187 typedef struct PS_PrivateRec_* PS_Private;
188
189
190 /*************************************************************************/
191 /* */
192 /* <Struct> */
193 /* T1_Private */
194 /* */
195 /* <Description> */
196 /* This type is equivalent to @PS_PrivateRec. It is deprecated but */
197 /* kept to maintain source compatibility between various versions of */
198 /* FreeType. */
199 /* */
200 typedef PS_PrivateRec T1_Private;
201
202
203 /*************************************************************************/
204 /* */
205 /* <Enum> */
206 /* T1_Blend_Flags */
207 /* */
208 /* <Description> */
209 /* A set of flags used to indicate which fields are present in a */
210 /* given blend dictionary (font info or private). Used to support */
211 /* Multiple Masters fonts. */
212 /* */
213 /* <Values> */
214 /* T1_BLEND_UNDERLINE_POSITION :: */
215 /* T1_BLEND_UNDERLINE_THICKNESS :: */
216 /* T1_BLEND_ITALIC_ANGLE :: */
217 /* T1_BLEND_BLUE_VALUES :: */
218 /* T1_BLEND_OTHER_BLUES :: */
219 /* T1_BLEND_STANDARD_WIDTH :: */
220 /* T1_BLEND_STANDARD_HEIGHT :: */
221 /* T1_BLEND_STEM_SNAP_WIDTHS :: */
222 /* T1_BLEND_STEM_SNAP_HEIGHTS :: */
223 /* T1_BLEND_BLUE_SCALE :: */
224 /* T1_BLEND_BLUE_SHIFT :: */
225 /* T1_BLEND_FAMILY_BLUES :: */
226 /* T1_BLEND_FAMILY_OTHER_BLUES :: */
227 /* T1_BLEND_FORCE_BOLD :: */
228 /* */
229 typedef enum T1_Blend_Flags_
230 {
231 /* required fields in a FontInfo blend dictionary */
232 T1_BLEND_UNDERLINE_POSITION = 0,
233 T1_BLEND_UNDERLINE_THICKNESS,
234 T1_BLEND_ITALIC_ANGLE,
235
236 /* required fields in a Private blend dictionary */
237 T1_BLEND_BLUE_VALUES,
238 T1_BLEND_OTHER_BLUES,
239 T1_BLEND_STANDARD_WIDTH,
240 T1_BLEND_STANDARD_HEIGHT,
241 T1_BLEND_STEM_SNAP_WIDTHS,
242 T1_BLEND_STEM_SNAP_HEIGHTS,
243 T1_BLEND_BLUE_SCALE,
244 T1_BLEND_BLUE_SHIFT,
245 T1_BLEND_FAMILY_BLUES,
246 T1_BLEND_FAMILY_OTHER_BLUES,
247 T1_BLEND_FORCE_BOLD,
248
249 T1_BLEND_MAX /* do not remove */
250
251 } T1_Blend_Flags;
252
253
254 /* these constants are deprecated; use the corresponding */
255 /* `T1_Blend_Flags' values instead */
256 #define t1_blend_underline_position T1_BLEND_UNDERLINE_POSITION
257 #define t1_blend_underline_thickness T1_BLEND_UNDERLINE_THICKNESS
258 #define t1_blend_italic_angle T1_BLEND_ITALIC_ANGLE
259 #define t1_blend_blue_values T1_BLEND_BLUE_VALUES
260 #define t1_blend_other_blues T1_BLEND_OTHER_BLUES
261 #define t1_blend_standard_widths T1_BLEND_STANDARD_WIDTH
262 #define t1_blend_standard_height T1_BLEND_STANDARD_HEIGHT
263 #define t1_blend_stem_snap_widths T1_BLEND_STEM_SNAP_WIDTHS
264 #define t1_blend_stem_snap_heights T1_BLEND_STEM_SNAP_HEIGHTS
265 #define t1_blend_blue_scale T1_BLEND_BLUE_SCALE
266 #define t1_blend_blue_shift T1_BLEND_BLUE_SHIFT
267 #define t1_blend_family_blues T1_BLEND_FAMILY_BLUES
268 #define t1_blend_family_other_blues T1_BLEND_FAMILY_OTHER_BLUES
269 #define t1_blend_force_bold T1_BLEND_FORCE_BOLD
270 #define t1_blend_max T1_BLEND_MAX
271
272 /* */
273
274
275 /* maximum number of Multiple Masters designs, as defined in the spec */
276 #define T1_MAX_MM_DESIGNS 16
277
278 /* maximum number of Multiple Masters axes, as defined in the spec */
279 #define T1_MAX_MM_AXIS 4
280
281 /* maximum number of elements in a design map */
282 #define T1_MAX_MM_MAP_POINTS 20
283
284
285 /* this structure is used to store the BlendDesignMap entry for an axis */
286 typedef struct PS_DesignMap_
287 {
288 FT_Byte num_points;
289 FT_Long* design_points;
290 FT_Fixed* blend_points;
291
292 } PS_DesignMapRec, *PS_DesignMap;
293
294 /* backwards-compatible definition */
295 typedef PS_DesignMapRec T1_DesignMap;
296
297
298 typedef struct PS_BlendRec_
299 {
300 FT_UInt num_designs;
301 FT_UInt num_axis;
302
303 FT_String* axis_names[T1_MAX_MM_AXIS];
304 FT_Fixed* design_pos[T1_MAX_MM_DESIGNS];
305 PS_DesignMapRec design_map[T1_MAX_MM_AXIS];
306
307 FT_Fixed* weight_vector;
308 FT_Fixed* default_weight_vector;
309
310 PS_FontInfo font_infos[T1_MAX_MM_DESIGNS + 1];
311 PS_Private privates [T1_MAX_MM_DESIGNS + 1];
312
313 FT_ULong blend_bitflags;
314
315 FT_BBox* bboxes [T1_MAX_MM_DESIGNS + 1];
316
317 /* since 2.3.0 */
318
319 /* undocumented, optional: the default design instance; */
320 /* corresponds to default_weight_vector -- */
321 /* num_default_design_vector == 0 means it is not present */
322 /* in the font and associated metrics files */
323 FT_UInt default_design_vector[T1_MAX_MM_DESIGNS];
324 FT_UInt num_default_design_vector;
325
326 } PS_BlendRec, *PS_Blend;
327
328
329 /* backwards-compatible definition */
330 typedef PS_BlendRec T1_Blend;
331
332
333 /*************************************************************************/
334 /* */
335 /* <Struct> */
336 /* CID_FaceDictRec */
337 /* */
338 /* <Description> */
339 /* A structure used to represent data in a CID top-level dictionary. */
340 /* */
341 typedef struct CID_FaceDictRec_
342 {
343 PS_PrivateRec private_dict;
344
345 FT_UInt len_buildchar;
346 FT_Fixed forcebold_threshold;
347 FT_Pos stroke_width;
348 FT_Fixed expansion_factor;
349
350 FT_Byte paint_type;
351 FT_Byte font_type;
352 FT_Matrix font_matrix;
353 FT_Vector font_offset;
354
355 FT_UInt num_subrs;
356 FT_ULong subrmap_offset;
357 FT_Int sd_bytes;
358
359 } CID_FaceDictRec;
360
361
362 /*************************************************************************/
363 /* */
364 /* <Struct> */
365 /* CID_FaceDict */
366 /* */
367 /* <Description> */
368 /* A handle to a @CID_FaceDictRec structure. */
369 /* */
370 typedef struct CID_FaceDictRec_* CID_FaceDict;
371
372
373 /*************************************************************************/
374 /* */
375 /* <Struct> */
376 /* CID_FontDict */
377 /* */
378 /* <Description> */
379 /* This type is equivalent to @CID_FaceDictRec. It is deprecated but */
380 /* kept to maintain source compatibility between various versions of */
381 /* FreeType. */
382 /* */
383 typedef CID_FaceDictRec CID_FontDict;
384
385
386 /*************************************************************************/
387 /* */
388 /* <Struct> */
389 /* CID_FaceInfoRec */
390 /* */
391 /* <Description> */
392 /* A structure used to represent CID Face information. */
393 /* */
394 typedef struct CID_FaceInfoRec_
395 {
396 FT_String* cid_font_name;
397 FT_Fixed cid_version;
398 FT_Int cid_font_type;
399
400 FT_String* registry;
401 FT_String* ordering;
402 FT_Int supplement;
403
404 PS_FontInfoRec font_info;
405 FT_BBox font_bbox;
406 FT_ULong uid_base;
407
408 FT_Int num_xuid;
409 FT_ULong xuid[16];
410
411 FT_ULong cidmap_offset;
412 FT_Int fd_bytes;
413 FT_Int gd_bytes;
414 FT_ULong cid_count;
415
416 FT_Int num_dicts;
417 CID_FaceDict font_dicts;
418
419 FT_ULong data_offset;
420
421 } CID_FaceInfoRec;
422
423
424 /*************************************************************************/
425 /* */
426 /* <Struct> */
427 /* CID_FaceInfo */
428 /* */
429 /* <Description> */
430 /* A handle to a @CID_FaceInfoRec structure. */
431 /* */
432 typedef struct CID_FaceInfoRec_* CID_FaceInfo;
433
434
435 /*************************************************************************/
436 /* */
437 /* <Struct> */
438 /* CID_Info */
439 /* */
440 /* <Description> */
441 /* This type is equivalent to @CID_FaceInfoRec. It is deprecated but */
442 /* kept to maintain source compatibility between various versions of */
443 /* FreeType. */
444 /* */
445 typedef CID_FaceInfoRec CID_Info;
446
447
448 /************************************************************************
449 *
450 * @function:
451 * FT_Has_PS_Glyph_Names
452 *
453 * @description:
454 * Return true if a given face provides reliable PostScript glyph
455 * names. This is similar to using the @FT_HAS_GLYPH_NAMES macro,
456 * except that certain fonts (mostly TrueType) contain incorrect
457 * glyph name tables.
458 *
459 * When this function returns true, the caller is sure that the glyph
460 * names returned by @FT_Get_Glyph_Name are reliable.
461 *
462 * @input:
463 * face ::
464 * face handle
465 *
466 * @return:
467 * Boolean. True if glyph names are reliable.
468 *
469 */
470 FT_EXPORT( FT_Int )
471 FT_Has_PS_Glyph_Names( FT_Face face );
472
473
474 /************************************************************************
475 *
476 * @function:
477 * FT_Get_PS_Font_Info
478 *
479 * @description:
480 * Retrieve the @PS_FontInfoRec structure corresponding to a given
481 * PostScript font.
482 *
483 * @input:
484 * face ::
485 * PostScript face handle.
486 *
487 * @output:
488 * afont_info ::
489 * Output font info structure pointer.
490 *
491 * @return:
492 * FreeType error code. 0~means success.
493 *
494 * @note:
495 * The string pointers within the font info structure are owned by
496 * the face and don't need to be freed by the caller.
497 *
498 * If the font's format is not PostScript-based, this function will
499 * return the `FT_Err_Invalid_Argument' error code.
500 *
501 */
502 FT_EXPORT( FT_Error )
503 FT_Get_PS_Font_Info( FT_Face face,
504 PS_FontInfo afont_info );
505
506
507 /************************************************************************
508 *
509 * @function:
510 * FT_Get_PS_Font_Private
511 *
512 * @description:
513 * Retrieve the @PS_PrivateRec structure corresponding to a given
514 * PostScript font.
515 *
516 * @input:
517 * face ::
518 * PostScript face handle.
519 *
520 * @output:
521 * afont_private ::
522 * Output private dictionary structure pointer.
523 *
524 * @return:
525 * FreeType error code. 0~means success.
526 *
527 * @note:
528 * The string pointers within the @PS_PrivateRec structure are owned by
529 * the face and don't need to be freed by the caller.
530 *
531 * If the font's format is not PostScript-based, this function returns
532 * the `FT_Err_Invalid_Argument' error code.
533 *
534 */
535 FT_EXPORT( FT_Error )
536 FT_Get_PS_Font_Private( FT_Face face,
537 PS_Private afont_private );
538
539
540 /*************************************************************************/
541 /* */
542 /* <Enum> */
543 /* T1_EncodingType */
544 /* */
545 /* <Description> */
546 /* An enumeration describing the `Encoding' entry in a Type 1 */
547 /* dictionary. */
548 /* */
549 /* <Values> */
550 /* T1_ENCODING_TYPE_NONE :: */
551 /* T1_ENCODING_TYPE_ARRAY :: */
552 /* T1_ENCODING_TYPE_STANDARD :: */
553 /* T1_ENCODING_TYPE_ISOLATIN1 :: */
554 /* T1_ENCODING_TYPE_EXPERT :: */
555 /* */
556 typedef enum T1_EncodingType_
557 {
558 T1_ENCODING_TYPE_NONE = 0,
559 T1_ENCODING_TYPE_ARRAY,
560 T1_ENCODING_TYPE_STANDARD,
561 T1_ENCODING_TYPE_ISOLATIN1,
562 T1_ENCODING_TYPE_EXPERT
563
564 } T1_EncodingType;
565
566
567 /*************************************************************************/
568 /* */
569 /* <Enum> */
570 /* PS_Dict_Keys */
571 /* */
572 /* <Description> */
573 /* An enumeration used in calls to @FT_Get_PS_Font_Value to identify */
574 /* the Type~1 dictionary entry to retrieve. */
575 /* */
576 /* <Values> */
577 /* PS_DICT_FONT_TYPE :: */
578 /* PS_DICT_FONT_MATRIX :: */
579 /* PS_DICT_FONT_BBOX :: */
580 /* PS_DICT_PAINT_TYPE :: */
581 /* PS_DICT_FONT_NAME :: */
582 /* PS_DICT_UNIQUE_ID :: */
583 /* PS_DICT_NUM_CHAR_STRINGS :: */
584 /* PS_DICT_CHAR_STRING_KEY :: */
585 /* PS_DICT_CHAR_STRING :: */
586 /* PS_DICT_ENCODING_TYPE :: */
587 /* PS_DICT_ENCODING_ENTRY :: */
588 /* PS_DICT_NUM_SUBRS :: */
589 /* PS_DICT_SUBR :: */
590 /* PS_DICT_STD_HW :: */
591 /* PS_DICT_STD_VW :: */
592 /* PS_DICT_NUM_BLUE_VALUES :: */
593 /* PS_DICT_BLUE_VALUE :: */
594 /* PS_DICT_BLUE_FUZZ :: */
595 /* PS_DICT_NUM_OTHER_BLUES :: */
596 /* PS_DICT_OTHER_BLUE :: */
597 /* PS_DICT_NUM_FAMILY_BLUES :: */
598 /* PS_DICT_FAMILY_BLUE :: */
599 /* PS_DICT_NUM_FAMILY_OTHER_BLUES :: */
600 /* PS_DICT_FAMILY_OTHER_BLUE :: */
601 /* PS_DICT_BLUE_SCALE :: */
602 /* PS_DICT_BLUE_SHIFT :: */
603 /* PS_DICT_NUM_STEM_SNAP_H :: */
604 /* PS_DICT_STEM_SNAP_H :: */
605 /* PS_DICT_NUM_STEM_SNAP_V :: */
606 /* PS_DICT_STEM_SNAP_V :: */
607 /* PS_DICT_FORCE_BOLD :: */
608 /* PS_DICT_RND_STEM_UP :: */
609 /* PS_DICT_MIN_FEATURE :: */
610 /* PS_DICT_LEN_IV :: */
611 /* PS_DICT_PASSWORD :: */
612 /* PS_DICT_LANGUAGE_GROUP :: */
613 /* PS_DICT_VERSION :: */
614 /* PS_DICT_NOTICE :: */
615 /* PS_DICT_FULL_NAME :: */
616 /* PS_DICT_FAMILY_NAME :: */
617 /* PS_DICT_WEIGHT :: */
618 /* PS_DICT_IS_FIXED_PITCH :: */
619 /* PS_DICT_UNDERLINE_POSITION :: */
620 /* PS_DICT_UNDERLINE_THICKNESS :: */
621 /* PS_DICT_FS_TYPE :: */
622 /* PS_DICT_ITALIC_ANGLE :: */
623 /* */
624 typedef enum PS_Dict_Keys_
625 {
626 /* conventionally in the font dictionary */
627 PS_DICT_FONT_TYPE, /* FT_Byte */
628 PS_DICT_FONT_MATRIX, /* FT_Fixed */
629 PS_DICT_FONT_BBOX, /* FT_Fixed */
630 PS_DICT_PAINT_TYPE, /* FT_Byte */
631 PS_DICT_FONT_NAME, /* FT_String* */
632 PS_DICT_UNIQUE_ID, /* FT_Int */
633 PS_DICT_NUM_CHAR_STRINGS, /* FT_Int */
634 PS_DICT_CHAR_STRING_KEY, /* FT_String* */
635 PS_DICT_CHAR_STRING, /* FT_String* */
636 PS_DICT_ENCODING_TYPE, /* T1_EncodingType */
637 PS_DICT_ENCODING_ENTRY, /* FT_String* */
638
639 /* conventionally in the font Private dictionary */
640 PS_DICT_NUM_SUBRS, /* FT_Int */
641 PS_DICT_SUBR, /* FT_String* */
642 PS_DICT_STD_HW, /* FT_UShort */
643 PS_DICT_STD_VW, /* FT_UShort */
644 PS_DICT_NUM_BLUE_VALUES, /* FT_Byte */
645 PS_DICT_BLUE_VALUE, /* FT_Short */
646 PS_DICT_BLUE_FUZZ, /* FT_Int */
647 PS_DICT_NUM_OTHER_BLUES, /* FT_Byte */
648 PS_DICT_OTHER_BLUE, /* FT_Short */
649 PS_DICT_NUM_FAMILY_BLUES, /* FT_Byte */
650 PS_DICT_FAMILY_BLUE, /* FT_Short */
651 PS_DICT_NUM_FAMILY_OTHER_BLUES, /* FT_Byte */
652 PS_DICT_FAMILY_OTHER_BLUE, /* FT_Short */
653 PS_DICT_BLUE_SCALE, /* FT_Fixed */
654 PS_DICT_BLUE_SHIFT, /* FT_Int */
655 PS_DICT_NUM_STEM_SNAP_H, /* FT_Byte */
656 PS_DICT_STEM_SNAP_H, /* FT_Short */
657 PS_DICT_NUM_STEM_SNAP_V, /* FT_Byte */
658 PS_DICT_STEM_SNAP_V, /* FT_Short */
659 PS_DICT_FORCE_BOLD, /* FT_Bool */
660 PS_DICT_RND_STEM_UP, /* FT_Bool */
661 PS_DICT_MIN_FEATURE, /* FT_Short */
662 PS_DICT_LEN_IV, /* FT_Int */
663 PS_DICT_PASSWORD, /* FT_Long */
664 PS_DICT_LANGUAGE_GROUP, /* FT_Long */
665
666 /* conventionally in the font FontInfo dictionary */
667 PS_DICT_VERSION, /* FT_String* */
668 PS_DICT_NOTICE, /* FT_String* */
669 PS_DICT_FULL_NAME, /* FT_String* */
670 PS_DICT_FAMILY_NAME, /* FT_String* */
671 PS_DICT_WEIGHT, /* FT_String* */
672 PS_DICT_IS_FIXED_PITCH, /* FT_Bool */
673 PS_DICT_UNDERLINE_POSITION, /* FT_Short */
674 PS_DICT_UNDERLINE_THICKNESS, /* FT_UShort */
675 PS_DICT_FS_TYPE, /* FT_UShort */
676 PS_DICT_ITALIC_ANGLE, /* FT_Long */
677
678 PS_DICT_MAX = PS_DICT_ITALIC_ANGLE
679
680 } PS_Dict_Keys;
681
682
683 /************************************************************************
684 *
685 * @function:
686 * FT_Get_PS_Font_Value
687 *
688 * @description:
689 * Retrieve the value for the supplied key from a PostScript font.
690 *
691 * @input:
692 * face ::
693 * PostScript face handle.
694 *
695 * key ::
696 * An enumeration value representing the dictionary key to retrieve.
697 *
698 * idx ::
699 * For array values, this specifies the index to be returned.
700 *
701 * value ::
702 * A pointer to memory into which to write the value.
703 *
704 * valen_len ::
705 * The size, in bytes, of the memory supplied for the value.
706 *
707 * @output:
708 * value ::
709 * The value matching the above key, if it exists.
710 *
711 * @return:
712 * The amount of memory (in bytes) required to hold the requested
713 * value (if it exists, -1 otherwise).
714 *
715 * @note:
716 * The values returned are not pointers into the internal structures of
717 * the face, but are `fresh' copies, so that the memory containing them
718 * belongs to the calling application. This also enforces the
719 * `read-only' nature of these values, i.e., this function cannot be
720 * used to manipulate the face.
721 *
722 * `value' is a void pointer because the values returned can be of
723 * various types.
724 *
725 * If either `value' is NULL or `value_len' is too small, just the
726 * required memory size for the requested entry is returned.
727 *
728 * The `idx' parameter is used, not only to retrieve elements of, for
729 * example, the FontMatrix or FontBBox, but also to retrieve name keys
730 * from the CharStrings dictionary, and the charstrings themselves. It
731 * is ignored for atomic values.
732 *
733 * PS_DICT_BLUE_SCALE returns a value that is scaled up by 1000. To
734 * get the value as in the font stream, you need to divide by
735 * 65536000.0 (to remove the FT_Fixed scale, and the x1000 scale).
736 *
737 * IMPORTANT: Only key/value pairs read by the FreeType interpreter can
738 * be retrieved. So, for example, PostScript procedures such as NP,
739 * ND, and RD are not available. Arbitrary keys are, obviously, not be
740 * available either.
741 *
742 * If the font's format is not PostScript-based, this function returns
743 * the `FT_Err_Invalid_Argument' error code.
744 *
745 */
746 FT_EXPORT( FT_Long )
747 FT_Get_PS_Font_Value( FT_Face face,
748 PS_Dict_Keys key,
749 FT_UInt idx,
750 void *value,
751 FT_Long value_len );
752
753 /* */
754
755 FT_END_HEADER
756
757 #endif /* __T1TABLES_H__ */
758
759
760 /* END */
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