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comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/harfbuzz/hb-font.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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1 /*
2 * Copyright © 2009 Red Hat, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Red Hat Author(s): Behdad Esfahbod
25 */
26
27 #ifndef HB_H_IN
28 #error "Include <hb.h> instead."
29 #endif
30
31 #ifndef HB_FONT_H
32 #define HB_FONT_H
33
34 #include "hb-common.h"
35 #include "hb-face.h"
36 #include "hb-draw.h"
37
38 HB_BEGIN_DECLS
39
40
41 typedef struct hb_font_t hb_font_t;
42
43
44 /*
45 * hb_font_funcs_t
46 */
47
48 typedef struct hb_font_funcs_t hb_font_funcs_t;
49
50 HB_EXTERN hb_font_funcs_t *
51 hb_font_funcs_create (void);
52
53 HB_EXTERN hb_font_funcs_t *
54 hb_font_funcs_get_empty (void);
55
56 HB_EXTERN hb_font_funcs_t *
57 hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
58
59 HB_EXTERN void
60 hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
61
62 HB_EXTERN hb_bool_t
63 hb_font_funcs_set_user_data (hb_font_funcs_t *ffuncs,
64 hb_user_data_key_t *key,
65 void * data,
66 hb_destroy_func_t destroy,
67 hb_bool_t replace);
68
69
70 HB_EXTERN void *
71 hb_font_funcs_get_user_data (hb_font_funcs_t *ffuncs,
72 hb_user_data_key_t *key);
73
74
75 HB_EXTERN void
76 hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
77
78 HB_EXTERN hb_bool_t
79 hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
80
81
82 /* font and glyph extents */
83
84 /* Note that typically ascender is positive and descender negative in coordinate systems that grow up. */
85 typedef struct hb_font_extents_t
86 {
87 hb_position_t ascender; /* typographic ascender. */
88 hb_position_t descender; /* typographic descender. */
89 hb_position_t line_gap; /* suggested line spacing gap. */
90 /*< private >*/
91 hb_position_t reserved9;
92 hb_position_t reserved8;
93 hb_position_t reserved7;
94 hb_position_t reserved6;
95 hb_position_t reserved5;
96 hb_position_t reserved4;
97 hb_position_t reserved3;
98 hb_position_t reserved2;
99 hb_position_t reserved1;
100 } hb_font_extents_t;
101
102 /* Note that height is negative in coordinate systems that grow up. */
103 typedef struct hb_glyph_extents_t
104 {
105 hb_position_t x_bearing; /* left side of glyph from origin. */
106 hb_position_t y_bearing; /* top side of glyph from origin. */
107 hb_position_t width; /* distance from left to right side. */
108 hb_position_t height; /* distance from top to bottom side. */
109 } hb_glyph_extents_t;
110
111 /* func types */
112
113 typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data,
114 hb_font_extents_t *extents,
115 void *user_data);
116 typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t;
117 typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t;
118
119
120 typedef hb_bool_t (*hb_font_get_nominal_glyph_func_t) (hb_font_t *font, void *font_data,
121 hb_codepoint_t unicode,
122 hb_codepoint_t *glyph,
123 void *user_data);
124 typedef hb_bool_t (*hb_font_get_variation_glyph_func_t) (hb_font_t *font, void *font_data,
125 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
126 hb_codepoint_t *glyph,
127 void *user_data);
128
129 typedef unsigned int (*hb_font_get_nominal_glyphs_func_t) (hb_font_t *font, void *font_data,
130 unsigned int count,
131 const hb_codepoint_t *first_unicode,
132 unsigned int unicode_stride,
133 hb_codepoint_t *first_glyph,
134 unsigned int glyph_stride,
135 void *user_data);
136
137
138 typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
139 hb_codepoint_t glyph,
140 void *user_data);
141 typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t;
142 typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t;
143
144 typedef void (*hb_font_get_glyph_advances_func_t) (hb_font_t* font, void* font_data,
145 unsigned int count,
146 const hb_codepoint_t *first_glyph,
147 unsigned glyph_stride,
148 hb_position_t *first_advance,
149 unsigned advance_stride,
150 void *user_data);
151 typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t;
152 typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t;
153
154 typedef hb_bool_t (*hb_font_get_glyph_origin_func_t) (hb_font_t *font, void *font_data,
155 hb_codepoint_t glyph,
156 hb_position_t *x, hb_position_t *y,
157 void *user_data);
158 typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t;
159 typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t;
160
161 typedef hb_position_t (*hb_font_get_glyph_kerning_func_t) (hb_font_t *font, void *font_data,
162 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
163 void *user_data);
164 typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t;
165
166
167 typedef hb_bool_t (*hb_font_get_glyph_extents_func_t) (hb_font_t *font, void *font_data,
168 hb_codepoint_t glyph,
169 hb_glyph_extents_t *extents,
170 void *user_data);
171 typedef hb_bool_t (*hb_font_get_glyph_contour_point_func_t) (hb_font_t *font, void *font_data,
172 hb_codepoint_t glyph, unsigned int point_index,
173 hb_position_t *x, hb_position_t *y,
174 void *user_data);
175
176
177 typedef hb_bool_t (*hb_font_get_glyph_name_func_t) (hb_font_t *font, void *font_data,
178 hb_codepoint_t glyph,
179 char *name, unsigned int size,
180 void *user_data);
181 typedef hb_bool_t (*hb_font_get_glyph_from_name_func_t) (hb_font_t *font, void *font_data,
182 const char *name, int len, /* -1 means nul-terminated */
183 hb_codepoint_t *glyph,
184 void *user_data);
185
186
187 /* func setters */
188
189 /**
190 * hb_font_funcs_set_font_h_extents_func:
191 * @ffuncs: font functions.
192 * @func: (closure user_data) (destroy destroy) (scope notified):
193 * @user_data:
194 * @destroy:
195 *
196 *
197 *
198 * Since: 1.1.2
199 **/
200 HB_EXTERN void
201 hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs,
202 hb_font_get_font_h_extents_func_t func,
203 void *user_data, hb_destroy_func_t destroy);
204
205 /**
206 * hb_font_funcs_set_font_v_extents_func:
207 * @ffuncs: font functions.
208 * @func: (closure user_data) (destroy destroy) (scope notified):
209 * @user_data:
210 * @destroy:
211 *
212 *
213 *
214 * Since: 1.1.2
215 **/
216 HB_EXTERN void
217 hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs,
218 hb_font_get_font_v_extents_func_t func,
219 void *user_data, hb_destroy_func_t destroy);
220
221 /**
222 * hb_font_funcs_set_nominal_glyph_func:
223 * @ffuncs: font functions.
224 * @func: (closure user_data) (destroy destroy) (scope notified):
225 * @user_data:
226 * @destroy:
227 *
228 *
229 *
230 * Since: 1.2.3
231 **/
232 HB_EXTERN void
233 hb_font_funcs_set_nominal_glyph_func (hb_font_funcs_t *ffuncs,
234 hb_font_get_nominal_glyph_func_t func,
235 void *user_data, hb_destroy_func_t destroy);
236
237 /**
238 * hb_font_funcs_set_nominal_glyphs_func:
239 * @ffuncs: font functions.
240 * @func: (closure user_data) (destroy destroy) (scope notified):
241 * @user_data:
242 * @destroy:
243 *
244 *
245 *
246 * Since: 2.0.0
247 **/
248 HB_EXTERN void
249 hb_font_funcs_set_nominal_glyphs_func (hb_font_funcs_t *ffuncs,
250 hb_font_get_nominal_glyphs_func_t func,
251 void *user_data, hb_destroy_func_t destroy);
252
253 /**
254 * hb_font_funcs_set_variation_glyph_func:
255 * @ffuncs: font functions.
256 * @func: (closure user_data) (destroy destroy) (scope notified):
257 * @user_data:
258 * @destroy:
259 *
260 *
261 *
262 * Since: 1.2.3
263 **/
264 HB_EXTERN void
265 hb_font_funcs_set_variation_glyph_func (hb_font_funcs_t *ffuncs,
266 hb_font_get_variation_glyph_func_t func,
267 void *user_data, hb_destroy_func_t destroy);
268
269 /**
270 * hb_font_funcs_set_glyph_h_advance_func:
271 * @ffuncs: font functions.
272 * @func: (closure user_data) (destroy destroy) (scope notified):
273 * @user_data:
274 * @destroy:
275 *
276 *
277 *
278 * Since: 0.9.2
279 **/
280 HB_EXTERN void
281 hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
282 hb_font_get_glyph_h_advance_func_t func,
283 void *user_data, hb_destroy_func_t destroy);
284
285 /**
286 * hb_font_funcs_set_glyph_v_advance_func:
287 * @ffuncs: font functions.
288 * @func: (closure user_data) (destroy destroy) (scope notified):
289 * @user_data:
290 * @destroy:
291 *
292 *
293 *
294 * Since: 0.9.2
295 **/
296 HB_EXTERN void
297 hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
298 hb_font_get_glyph_v_advance_func_t func,
299 void *user_data, hb_destroy_func_t destroy);
300
301 /**
302 * hb_font_funcs_set_glyph_h_advances_func:
303 * @ffuncs: font functions.
304 * @func: (closure user_data) (destroy destroy) (scope notified):
305 * @user_data:
306 * @destroy:
307 *
308 *
309 *
310 * Since: 1.8.6
311 **/
312 HB_EXTERN void
313 hb_font_funcs_set_glyph_h_advances_func (hb_font_funcs_t *ffuncs,
314 hb_font_get_glyph_h_advances_func_t func,
315 void *user_data, hb_destroy_func_t destroy);
316
317 /**
318 * hb_font_funcs_set_glyph_v_advances_func:
319 * @ffuncs: font functions.
320 * @func: (closure user_data) (destroy destroy) (scope notified):
321 * @user_data:
322 * @destroy:
323 *
324 *
325 *
326 * Since: 1.8.6
327 **/
328 HB_EXTERN void
329 hb_font_funcs_set_glyph_v_advances_func (hb_font_funcs_t *ffuncs,
330 hb_font_get_glyph_v_advances_func_t func,
331 void *user_data, hb_destroy_func_t destroy);
332
333 /**
334 * hb_font_funcs_set_glyph_h_origin_func:
335 * @ffuncs: font functions.
336 * @func: (closure user_data) (destroy destroy) (scope notified):
337 * @user_data:
338 * @destroy:
339 *
340 *
341 *
342 * Since: 0.9.2
343 **/
344 HB_EXTERN void
345 hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
346 hb_font_get_glyph_h_origin_func_t func,
347 void *user_data, hb_destroy_func_t destroy);
348
349 /**
350 * hb_font_funcs_set_glyph_v_origin_func:
351 * @ffuncs: font functions.
352 * @func: (closure user_data) (destroy destroy) (scope notified):
353 * @user_data:
354 * @destroy:
355 *
356 *
357 *
358 * Since: 0.9.2
359 **/
360 HB_EXTERN void
361 hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
362 hb_font_get_glyph_v_origin_func_t func,
363 void *user_data, hb_destroy_func_t destroy);
364
365 /**
366 * hb_font_funcs_set_glyph_h_kerning_func:
367 * @ffuncs: font functions.
368 * @func: (closure user_data) (destroy destroy) (scope notified):
369 * @user_data:
370 * @destroy:
371 *
372 *
373 *
374 * Since: 0.9.2
375 **/
376 HB_EXTERN void
377 hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
378 hb_font_get_glyph_h_kerning_func_t func,
379 void *user_data, hb_destroy_func_t destroy);
380
381 /**
382 * hb_font_funcs_set_glyph_extents_func:
383 * @ffuncs: font functions.
384 * @func: (closure user_data) (destroy destroy) (scope notified):
385 * @user_data:
386 * @destroy:
387 *
388 *
389 *
390 * Since: 0.9.2
391 **/
392 HB_EXTERN void
393 hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
394 hb_font_get_glyph_extents_func_t func,
395 void *user_data, hb_destroy_func_t destroy);
396
397 /**
398 * hb_font_funcs_set_glyph_contour_point_func:
399 * @ffuncs: font functions.
400 * @func: (closure user_data) (destroy destroy) (scope notified):
401 * @user_data:
402 * @destroy:
403 *
404 *
405 *
406 * Since: 0.9.2
407 **/
408 HB_EXTERN void
409 hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
410 hb_font_get_glyph_contour_point_func_t func,
411 void *user_data, hb_destroy_func_t destroy);
412
413 /**
414 * hb_font_funcs_set_glyph_name_func:
415 * @ffuncs: font functions.
416 * @func: (closure user_data) (destroy destroy) (scope notified):
417 * @user_data:
418 * @destroy:
419 *
420 *
421 *
422 * Since: 0.9.2
423 **/
424 HB_EXTERN void
425 hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs,
426 hb_font_get_glyph_name_func_t func,
427 void *user_data, hb_destroy_func_t destroy);
428
429 /**
430 * hb_font_funcs_set_glyph_from_name_func:
431 * @ffuncs: font functions.
432 * @func: (closure user_data) (destroy destroy) (scope notified):
433 * @user_data:
434 * @destroy:
435 *
436 *
437 *
438 * Since: 0.9.2
439 **/
440 HB_EXTERN void
441 hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs,
442 hb_font_get_glyph_from_name_func_t func,
443 void *user_data, hb_destroy_func_t destroy);
444
445 /* func dispatch */
446
447 HB_EXTERN hb_bool_t
448 hb_font_get_h_extents (hb_font_t *font,
449 hb_font_extents_t *extents);
450 HB_EXTERN hb_bool_t
451 hb_font_get_v_extents (hb_font_t *font,
452 hb_font_extents_t *extents);
453
454 HB_EXTERN hb_bool_t
455 hb_font_get_nominal_glyph (hb_font_t *font,
456 hb_codepoint_t unicode,
457 hb_codepoint_t *glyph);
458 HB_EXTERN hb_bool_t
459 hb_font_get_variation_glyph (hb_font_t *font,
460 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
461 hb_codepoint_t *glyph);
462
463 HB_EXTERN unsigned int
464 hb_font_get_nominal_glyphs (hb_font_t *font,
465 unsigned int count,
466 const hb_codepoint_t *first_unicode,
467 unsigned int unicode_stride,
468 hb_codepoint_t *first_glyph,
469 unsigned int glyph_stride);
470
471 HB_EXTERN hb_position_t
472 hb_font_get_glyph_h_advance (hb_font_t *font,
473 hb_codepoint_t glyph);
474 HB_EXTERN hb_position_t
475 hb_font_get_glyph_v_advance (hb_font_t *font,
476 hb_codepoint_t glyph);
477
478 HB_EXTERN void
479 hb_font_get_glyph_h_advances (hb_font_t* font,
480 unsigned int count,
481 const hb_codepoint_t *first_glyph,
482 unsigned glyph_stride,
483 hb_position_t *first_advance,
484 unsigned advance_stride);
485 HB_EXTERN void
486 hb_font_get_glyph_v_advances (hb_font_t* font,
487 unsigned int count,
488 const hb_codepoint_t *first_glyph,
489 unsigned glyph_stride,
490 hb_position_t *first_advance,
491 unsigned advance_stride);
492
493 HB_EXTERN hb_bool_t
494 hb_font_get_glyph_h_origin (hb_font_t *font,
495 hb_codepoint_t glyph,
496 hb_position_t *x, hb_position_t *y);
497 HB_EXTERN hb_bool_t
498 hb_font_get_glyph_v_origin (hb_font_t *font,
499 hb_codepoint_t glyph,
500 hb_position_t *x, hb_position_t *y);
501
502 HB_EXTERN hb_position_t
503 hb_font_get_glyph_h_kerning (hb_font_t *font,
504 hb_codepoint_t left_glyph, hb_codepoint_t right_glyph);
505
506 HB_EXTERN hb_bool_t
507 hb_font_get_glyph_extents (hb_font_t *font,
508 hb_codepoint_t glyph,
509 hb_glyph_extents_t *extents);
510
511 HB_EXTERN hb_bool_t
512 hb_font_get_glyph_contour_point (hb_font_t *font,
513 hb_codepoint_t glyph, unsigned int point_index,
514 hb_position_t *x, hb_position_t *y);
515
516 HB_EXTERN hb_bool_t
517 hb_font_get_glyph_name (hb_font_t *font,
518 hb_codepoint_t glyph,
519 char *name, unsigned int size);
520 HB_EXTERN hb_bool_t
521 hb_font_get_glyph_from_name (hb_font_t *font,
522 const char *name, int len, /* -1 means nul-terminated */
523 hb_codepoint_t *glyph);
524
525
526 /* high-level funcs, with fallback */
527
528 /* Calls either hb_font_get_nominal_glyph() if variation_selector is 0,
529 * otherwise calls hb_font_get_variation_glyph(). */
530 HB_EXTERN hb_bool_t
531 hb_font_get_glyph (hb_font_t *font,
532 hb_codepoint_t unicode, hb_codepoint_t variation_selector,
533 hb_codepoint_t *glyph);
534
535 HB_EXTERN void
536 hb_font_get_extents_for_direction (hb_font_t *font,
537 hb_direction_t direction,
538 hb_font_extents_t *extents);
539 HB_EXTERN void
540 hb_font_get_glyph_advance_for_direction (hb_font_t *font,
541 hb_codepoint_t glyph,
542 hb_direction_t direction,
543 hb_position_t *x, hb_position_t *y);
544 HB_EXTERN void
545 hb_font_get_glyph_advances_for_direction (hb_font_t* font,
546 hb_direction_t direction,
547 unsigned int count,
548 const hb_codepoint_t *first_glyph,
549 unsigned glyph_stride,
550 hb_position_t *first_advance,
551 unsigned advance_stride);
552 HB_EXTERN void
553 hb_font_get_glyph_origin_for_direction (hb_font_t *font,
554 hb_codepoint_t glyph,
555 hb_direction_t direction,
556 hb_position_t *x, hb_position_t *y);
557 HB_EXTERN void
558 hb_font_add_glyph_origin_for_direction (hb_font_t *font,
559 hb_codepoint_t glyph,
560 hb_direction_t direction,
561 hb_position_t *x, hb_position_t *y);
562 HB_EXTERN void
563 hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
564 hb_codepoint_t glyph,
565 hb_direction_t direction,
566 hb_position_t *x, hb_position_t *y);
567
568 HB_EXTERN void
569 hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
570 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
571 hb_direction_t direction,
572 hb_position_t *x, hb_position_t *y);
573
574 HB_EXTERN hb_bool_t
575 hb_font_get_glyph_extents_for_origin (hb_font_t *font,
576 hb_codepoint_t glyph,
577 hb_direction_t direction,
578 hb_glyph_extents_t *extents);
579
580 HB_EXTERN hb_bool_t
581 hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
582 hb_codepoint_t glyph, unsigned int point_index,
583 hb_direction_t direction,
584 hb_position_t *x, hb_position_t *y);
585
586 /* Generates gidDDD if glyph has no name. */
587 HB_EXTERN void
588 hb_font_glyph_to_string (hb_font_t *font,
589 hb_codepoint_t glyph,
590 char *s, unsigned int size);
591 /* Parses gidDDD and uniUUUU strings automatically. */
592 HB_EXTERN hb_bool_t
593 hb_font_glyph_from_string (hb_font_t *font,
594 const char *s, int len, /* -1 means nul-terminated */
595 hb_codepoint_t *glyph);
596
597
598 /*
599 * hb_font_t
600 */
601
602 /* Fonts are very light-weight objects */
603
604 HB_EXTERN hb_font_t *
605 hb_font_create (hb_face_t *face);
606
607 HB_EXTERN hb_font_t *
608 hb_font_create_sub_font (hb_font_t *parent);
609
610 HB_EXTERN hb_font_t *
611 hb_font_get_empty (void);
612
613 HB_EXTERN hb_font_t *
614 hb_font_reference (hb_font_t *font);
615
616 HB_EXTERN void
617 hb_font_destroy (hb_font_t *font);
618
619 HB_EXTERN hb_bool_t
620 hb_font_set_user_data (hb_font_t *font,
621 hb_user_data_key_t *key,
622 void * data,
623 hb_destroy_func_t destroy,
624 hb_bool_t replace);
625
626
627 HB_EXTERN void *
628 hb_font_get_user_data (hb_font_t *font,
629 hb_user_data_key_t *key);
630
631 HB_EXTERN void
632 hb_font_make_immutable (hb_font_t *font);
633
634 HB_EXTERN hb_bool_t
635 hb_font_is_immutable (hb_font_t *font);
636
637 HB_EXTERN void
638 hb_font_set_parent (hb_font_t *font,
639 hb_font_t *parent);
640
641 HB_EXTERN hb_font_t *
642 hb_font_get_parent (hb_font_t *font);
643
644 HB_EXTERN void
645 hb_font_set_face (hb_font_t *font,
646 hb_face_t *face);
647
648 HB_EXTERN hb_face_t *
649 hb_font_get_face (hb_font_t *font);
650
651
652 HB_EXTERN void
653 hb_font_set_funcs (hb_font_t *font,
654 hb_font_funcs_t *klass,
655 void *font_data,
656 hb_destroy_func_t destroy);
657
658 /* Be *very* careful with this function! */
659 HB_EXTERN void
660 hb_font_set_funcs_data (hb_font_t *font,
661 void *font_data,
662 hb_destroy_func_t destroy);
663
664
665 HB_EXTERN void
666 hb_font_set_scale (hb_font_t *font,
667 int x_scale,
668 int y_scale);
669
670 HB_EXTERN void
671 hb_font_get_scale (hb_font_t *font,
672 int *x_scale,
673 int *y_scale);
674
675 /*
676 * A zero value means "no hinting in that direction"
677 */
678 HB_EXTERN void
679 hb_font_set_ppem (hb_font_t *font,
680 unsigned int x_ppem,
681 unsigned int y_ppem);
682
683 HB_EXTERN void
684 hb_font_get_ppem (hb_font_t *font,
685 unsigned int *x_ppem,
686 unsigned int *y_ppem);
687
688 /*
689 * Point size per EM. Used for optical-sizing in CoreText.
690 * A value of zero means "not set".
691 */
692 HB_EXTERN void
693 hb_font_set_ptem (hb_font_t *font, float ptem);
694
695 HB_EXTERN float
696 hb_font_get_ptem (hb_font_t *font);
697
698 HB_EXTERN void
699 hb_font_set_variations (hb_font_t *font,
700 const hb_variation_t *variations,
701 unsigned int variations_length);
702
703 HB_EXTERN void
704 hb_font_set_var_coords_design (hb_font_t *font,
705 const float *coords,
706 unsigned int coords_length);
707
708 #ifdef HB_EXPERIMENTAL_API
709 HB_EXTERN const float *
710 hb_font_get_var_coords_design (hb_font_t *font,
711 unsigned int *length);
712 #endif
713
714 HB_EXTERN void
715 hb_font_set_var_coords_normalized (hb_font_t *font,
716 const int *coords, /* 2.14 normalized */
717 unsigned int coords_length);
718
719 HB_EXTERN const int *
720 hb_font_get_var_coords_normalized (hb_font_t *font,
721 unsigned int *length);
722
723 HB_EXTERN void
724 hb_font_set_var_named_instance (hb_font_t *font,
725 unsigned instance_index);
726
727 #ifdef HB_EXPERIMENTAL_API
728 HB_EXTERN hb_bool_t
729 hb_font_draw_glyph (hb_font_t *font, hb_codepoint_t glyph,
730 const hb_draw_funcs_t *funcs, void *user_data);
731 #endif
732
733 HB_END_DECLS
734
735 #endif /* HB_FONT_H */