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1 | /* font.c -- "Font" primitives. |
2 | Copyright (C) 2006 Free Software Foundation, Inc. | |
3 | Copyright (C) 2006 | |
4 | National Institute of Advanced Industrial Science and Technology (AIST) | |
5 | Registration Number H13PRO009 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
22 | Boston, MA 02110-1301, USA. */ | |
23 | ||
24 | #include <config.h> | |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <ctype.h> | |
28 | ||
29 | #include "lisp.h" | |
30 | #include "buffer.h" | |
31 | #include "frame.h" | |
32 | #include "dispextern.h" | |
33 | #include "charset.h" | |
34 | #include "character.h" | |
35 | #include "composite.h" | |
36 | #include "fontset.h" | |
37 | #include "font.h" | |
38 | ||
39 | #define FONT_DEBUG | |
40 | ||
41 | #ifdef FONT_DEBUG | |
42 | #undef xassert | |
43 | #define xassert(X) do {if (!(X)) abort ();} while (0) | |
44 | #else | |
45 | #define xassert(X) (void) 0 | |
46 | #endif | |
47 | ||
48 | int enable_font_backend; | |
49 | ||
50 | Lisp_Object Qfontp; | |
51 | ||
52 | /* Like CHECK_FONT_SPEC but also validate properties of the font-spec, | |
53 | and set X to the validated result. */ | |
54 | ||
55 | #define CHECK_VALIDATE_FONT_SPEC(x) \ | |
56 | do { \ | |
57 | if (! FONT_SPEC_P (x)) x = wrong_type_argument (Qfont, x); \ | |
58 | x = font_prop_validate (x); \ | |
59 | } while (0) | |
60 | ||
61 | /* Number of pt per inch (from the TeXbook). */ | |
62 | #define PT_PER_INCH 72.27 | |
63 | ||
64 | /* Return a pixel size corresponding to POINT size (1/10 pt unit) on | |
65 | resolution RESY. */ | |
66 | #define POINT_TO_PIXEL(POINT, RESY) ((POINT) * (RESY) / PT_PER_INCH / 10 + 0.5) | |
67 | ||
68 | #define PIXEL_TO_POINT(PIXEL, RESY) ((PIXEL) * PT_PER_INCH * 10 / (RESY) + 0.5) | |
69 | ||
70 | /* Special string of zero length. It is used to specify a NULL name | |
71 | in a font properties (e.g. adstyle). We don't use the symbol of | |
72 | NULL name because it's confusing (Lisp printer prints nothing for | |
73 | it). */ | |
74 | Lisp_Object null_string; | |
75 | ||
76 | /* Special vector of zero length. This is repeatedly used by (struct | |
77 | font_driver *)->list when a specified font is not found. */ | |
78 | Lisp_Object null_vector; | |
79 | ||
80 | /* Vector of 3 elements. Each element is an alist for one of font | |
81 | style properties (weight, slant, width). The alist contains a | |
82 | mapping between symbolic property values (e.g. `medium' for weight) | |
83 | and numeric property values (e.g. 100). So, it looks like this: | |
84 | [((thin . 0) ... (heavy . 210)) | |
85 | ((ro . 0) ... (ot . 210)) | |
86 | ((ultracondensed . 50) ... (wide . 200))] */ | |
87 | static Lisp_Object font_style_table; | |
88 | ||
89 | /* Alist of font family vs the corresponding aliases. | |
90 | Each element has this form: | |
91 | (FAMILY ALIAS1 ALIAS2 ...) */ | |
92 | ||
93 | static Lisp_Object font_family_alist; | |
94 | ||
95 | /* Symbols representing keys of normal font properties. */ | |
96 | extern Lisp_Object QCtype, QCfamily, QCweight, QCslant, QCwidth, QCsize, QCname; | |
97 | Lisp_Object QCfoundry, QCadstyle, QCregistry, QCextra; | |
98 | /* Symbols representing keys of font extra info. */ | |
99 | Lisp_Object QCotf, QClanguage, QCscript; | |
100 | ||
101 | /* List of all font drivers. All font-backends (XXXfont.c) call | |
102 | add_font_driver in syms_of_XXXfont to register the font-driver | |
103 | here. */ | |
104 | static struct font_driver_list *font_driver_list; | |
105 | ||
106 | static Lisp_Object prop_name_to_numeric P_ ((enum font_property_index, | |
107 | Lisp_Object)); | |
108 | static Lisp_Object prop_numeric_to_name P_ ((enum font_property_index, int)); | |
109 | static Lisp_Object font_open_entity P_ ((FRAME_PTR, Lisp_Object, int)); | |
110 | ||
111 | /* Number of registered font drivers. */ | |
112 | static int num_font_drivers; | |
113 | ||
114 | /* Return a numeric value corresponding to PROP's NAME (symbol). If | |
115 | NAME is not registered in font_style_table, return Qnil. PROP must | |
116 | be one of FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */ | |
117 | ||
118 | static Lisp_Object | |
119 | prop_name_to_numeric (prop, name) | |
120 | enum font_property_index prop; | |
121 | Lisp_Object name; | |
122 | { | |
123 | int table_index = prop - FONT_WEIGHT_INDEX; | |
124 | Lisp_Object val; | |
125 | ||
126 | val = assq_no_quit (name, AREF (font_style_table, table_index)); | |
127 | return (NILP (val) ? Qnil : XCDR (val)); | |
128 | } | |
129 | ||
130 | ||
131 | /* Return a name (symbol) corresponding to PROP's NUMERIC value. If | |
132 | no name is registered for NUMERIC in font_style_table, return a | |
133 | symbol of integer name (e.g. `123'). PROP must be one of | |
134 | FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */ | |
135 | ||
136 | static Lisp_Object | |
137 | prop_numeric_to_name (prop, numeric) | |
138 | enum font_property_index prop; | |
139 | int numeric; | |
140 | { | |
141 | int table_index = prop - FONT_WEIGHT_INDEX; | |
142 | Lisp_Object table = AREF (font_style_table, table_index); | |
143 | char buf[10]; | |
144 | ||
145 | while (! NILP (table)) | |
146 | { | |
147 | if (XINT (XCDR (XCAR (table))) >= numeric) | |
148 | { | |
149 | if (XINT (XCDR (XCAR (table))) == numeric) | |
150 | return XCAR (XCAR (table)); | |
151 | else | |
152 | break; | |
153 | } | |
154 | table = XCDR (table); | |
155 | } | |
156 | sprintf (buf, "%d", numeric); | |
157 | return intern (buf); | |
158 | } | |
159 | ||
160 | ||
161 | /* Return a symbol whose name is STR (length LEN). If STR contains | |
162 | uppercase letters, downcase them in advance. */ | |
163 | ||
164 | Lisp_Object | |
165 | intern_downcase (str, len) | |
166 | char *str; | |
167 | int len; | |
168 | { | |
169 | char *buf; | |
170 | int i; | |
171 | ||
172 | for (i = 0; i < len; i++) | |
173 | if (isupper (str[i])) | |
174 | break; | |
175 | if (i == len) | |
176 | return Fintern (make_unibyte_string (str, len), Qnil); | |
177 | buf = alloca (len); | |
178 | if (! buf) | |
179 | return Fintern (null_string, Qnil); | |
180 | bcopy (str, buf, len); | |
181 | for (; i < len; i++) | |
182 | if (isascii (buf[i])) | |
183 | buf[i] = tolower (buf[i]); | |
184 | return Fintern (make_unibyte_string (buf, len), Qnil); | |
185 | } | |
186 | ||
187 | extern Lisp_Object Vface_alternative_font_family_alist; | |
188 | ||
189 | static void | |
190 | build_font_family_alist () | |
191 | { | |
192 | Lisp_Object alist = Vface_alternative_font_family_alist; | |
193 | ||
194 | for (; CONSP (alist); alist = XCDR (alist)) | |
195 | { | |
196 | Lisp_Object tail, elt; | |
197 | ||
198 | for (tail = XCAR (alist), elt = Qnil ; CONSP (tail); tail = XCDR (tail)) | |
199 | elt = nconc2 (elt, Fcons (Fintern (XCAR (tail), Qnil), Qnil)); | |
200 | font_family_alist = Fcons (elt, font_family_alist); | |
201 | } | |
202 | } | |
203 | ||
204 | \f | |
205 | /* Font property validater. */ | |
206 | ||
207 | static Lisp_Object | |
208 | font_prop_validate_type (prop, val) | |
209 | enum font_property_index prop; | |
210 | Lisp_Object val; | |
211 | { | |
212 | return (SYMBOLP (val) ? val : Qerror); | |
213 | } | |
214 | ||
215 | static Lisp_Object | |
216 | font_prop_validate_symbol (prop, val) | |
217 | enum font_property_index prop; | |
218 | Lisp_Object val; | |
219 | { | |
220 | if (STRINGP (val)) | |
221 | val = (SCHARS (val) == 0 ? null_string | |
222 | : intern_downcase ((char *) SDATA (val), SBYTES (val))); | |
223 | else if (SYMBOLP (val)) | |
224 | { | |
225 | if (SCHARS (SYMBOL_NAME (val)) == 0) | |
226 | val = null_string; | |
227 | } | |
228 | else | |
229 | val = Qerror; | |
230 | return val; | |
231 | } | |
232 | ||
233 | static Lisp_Object | |
234 | font_prop_validate_style (prop, val) | |
235 | enum font_property_index prop; | |
236 | Lisp_Object val; | |
237 | { | |
238 | if (! INTEGERP (val)) | |
239 | { | |
240 | if (STRINGP (val)) | |
241 | val = intern_downcase ((char *) SDATA (val), SBYTES (val)); | |
242 | if (! SYMBOLP (val)) | |
243 | val = Qerror; | |
244 | else | |
245 | { | |
246 | val = prop_name_to_numeric (prop, val); | |
247 | if (NILP (val)) | |
248 | val = Qerror; | |
249 | } | |
250 | } | |
251 | return val; | |
252 | } | |
253 | ||
254 | static Lisp_Object | |
255 | font_prop_validate_size (prop, val) | |
256 | enum font_property_index prop; | |
257 | Lisp_Object val; | |
258 | { | |
259 | return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0) | |
260 | ? val : Qerror); | |
261 | } | |
262 | ||
263 | static Lisp_Object | |
264 | font_prop_validate_extra (prop, val) | |
265 | enum font_property_index prop; | |
266 | Lisp_Object val; | |
267 | { | |
268 | Lisp_Object tail; | |
269 | ||
270 | for (tail = val; CONSP (tail); tail = XCDR (tail)) | |
271 | { | |
272 | Lisp_Object key = Fcar (XCAR (tail)), this_val = Fcdr (XCAR (tail)); | |
273 | ||
274 | if (NILP (this_val)) | |
275 | return Qnil; | |
276 | if (EQ (key, QClanguage)) | |
277 | if (! SYMBOLP (this_val)) | |
278 | { | |
279 | for (; CONSP (this_val); this_val = XCDR (this_val)) | |
280 | if (! SYMBOLP (XCAR (this_val))) | |
281 | return Qerror; | |
282 | if (! NILP (this_val)) | |
283 | return Qerror; | |
284 | } | |
285 | if (EQ (key, QCotf)) | |
286 | if (! STRINGP (this_val)) | |
287 | return Qerror; | |
288 | } | |
289 | return (NILP (tail) ? val : Qerror); | |
290 | } | |
291 | ||
292 | ||
293 | struct | |
294 | { | |
295 | Lisp_Object *key; | |
296 | Lisp_Object (*validater) P_ ((enum font_property_index prop, | |
297 | Lisp_Object val)); | |
298 | } font_property_table[FONT_SPEC_MAX] = | |
299 | { { &QCtype, font_prop_validate_type }, | |
300 | { &QCfoundry, font_prop_validate_symbol }, | |
301 | { &QCfamily, font_prop_validate_symbol }, | |
302 | { &QCadstyle, font_prop_validate_symbol }, | |
303 | { &QCregistry, font_prop_validate_symbol }, | |
304 | { &QCweight, font_prop_validate_style }, | |
305 | { &QCslant, font_prop_validate_style }, | |
306 | { &QCwidth, font_prop_validate_style }, | |
307 | { &QCsize, font_prop_validate_size }, | |
308 | { &QCextra, font_prop_validate_extra } | |
309 | }; | |
310 | ||
311 | static enum font_property_index | |
312 | check_font_prop_name (key) | |
313 | Lisp_Object key; | |
314 | { | |
315 | enum font_property_index i; | |
316 | ||
317 | for (i = FONT_TYPE_INDEX; i < FONT_SPEC_MAX; i++) | |
318 | if (EQ (key, *font_property_table[i].key)) | |
319 | break; | |
320 | return i; | |
321 | } | |
322 | ||
323 | static Lisp_Object | |
324 | font_prop_validate (spec) | |
325 | Lisp_Object spec; | |
326 | { | |
327 | enum font_property_index i; | |
328 | Lisp_Object val; | |
329 | ||
330 | for (i = FONT_TYPE_INDEX; i <= FONT_EXTRA_INDEX; i++) | |
331 | { | |
332 | if (! NILP (AREF (spec, i))) | |
333 | { | |
334 | val = (font_property_table[i].validater) (i, AREF (spec, i)); | |
335 | if (EQ (val, Qerror)) | |
336 | Fsignal (Qerror, list3 (build_string ("invalid font property"), | |
337 | *font_property_table[i].key, | |
338 | AREF (spec, i))); | |
339 | ASET (spec, i, val); | |
340 | } | |
341 | } | |
342 | return spec; | |
343 | } | |
344 | ||
345 | \f | |
346 | /* Font name parser and unparser */ | |
347 | ||
348 | /* An enumerator for each field of an XLFD font name. */ | |
349 | ||
350 | enum xlfd_field_index | |
351 | { | |
352 | XLFD_FOUNDRY_INDEX, | |
353 | XLFD_FAMILY_INDEX, | |
354 | XLFD_WEIGHT_INDEX, | |
355 | XLFD_SLANT_INDEX, | |
356 | XLFD_SWIDTH_INDEX, | |
357 | XLFD_ADSTYLE_INDEX, | |
358 | XLFD_PIXEL_SIZE_INDEX, | |
359 | XLFD_POINT_SIZE_INDEX, | |
360 | XLFD_RESX_INDEX, | |
361 | XLFD_RESY_INDEX, | |
362 | XLFD_SPACING_INDEX, | |
363 | XLFD_AVGWIDTH_INDEX, | |
364 | XLFD_REGISTRY_INDEX, | |
365 | XLFD_ENCODING_INDEX, | |
366 | XLFD_LAST_INDEX | |
367 | }; | |
368 | ||
369 | /* Return a symbol interned by string at STR and bytes LEN. | |
370 | If LEN == 0, return a null string. | |
371 | If the string is "*", return Qnil. | |
372 | It is assured that LEN < 256. */ | |
373 | ||
374 | static Lisp_Object | |
375 | intern_font_field (f, xlfd) | |
376 | char *f[XLFD_LAST_INDEX + 1]; | |
377 | int xlfd; | |
378 | { | |
379 | char *str = f[xlfd] + 1; | |
380 | int len; | |
381 | ||
382 | if (xlfd != XLFD_RESY_INDEX) | |
383 | len = f[xlfd + 1] - f[xlfd] - 1; | |
384 | else | |
385 | len = f[XLFD_REGISTRY_INDEX] - f[xlfd] - 1; | |
386 | ||
387 | if (len == 0) | |
388 | return null_string; | |
389 | if (*str == '*' && len == 1) | |
390 | return Qnil; | |
391 | return intern_downcase (str, len); | |
392 | } | |
393 | ||
394 | /* Parse P pointing the pixel/point size field of the form | |
395 | `[A B C D]' which specifies a transformation matrix: | |
396 | ||
397 | A B 0 | |
398 | C D 0 | |
399 | 0 0 1 | |
400 | ||
401 | by which all glyphs of the font are transformed. The spec says | |
402 | that scalar value N for the pixel/point size is equivalent to: | |
403 | A = N * resx/resy, B = C = 0, D = N. | |
404 | ||
405 | Return the scalar value N if the form is valid. Otherwise return | |
406 | -1. */ | |
407 | ||
408 | static int | |
409 | parse_matrix (p) | |
410 | char *p; | |
411 | { | |
412 | double matrix[4]; | |
413 | char *end; | |
414 | int i; | |
415 | ||
416 | for (i = 0, p++; i < 4 && *p && *p != ']'; i++) | |
417 | { | |
418 | if (*p == '~') | |
419 | matrix[i] = - strtod (p + 1, &end); | |
420 | else | |
421 | matrix[i] = strtod (p, &end); | |
422 | p = end; | |
423 | } | |
424 | return (i == 4 ? (int) matrix[3] : -1); | |
425 | } | |
426 | ||
427 | /* Parse NAME (null terminated) as XLFD format, and store information | |
428 | in FONT (font-spec or font-entity). If NAME is successfully | |
429 | parsed, return 2 (non-scalable font), 1 (scalable vector font), or | |
430 | 0 (auto-scaled font). Otherwise return -1. | |
431 | ||
432 | If FONT is a font-entity, store RESY-SPACING-AVWIDTH information as | |
433 | a symbol in FONT_EXTRA_INDEX. | |
434 | ||
435 | If MERGE is nonzero, set a property of FONT only when it's nil. */ | |
436 | ||
437 | int | |
438 | font_parse_xlfd (name, font, merge) | |
439 | char *name; | |
440 | Lisp_Object font; | |
441 | int merge; | |
442 | { | |
443 | int len = strlen (name); | |
444 | int i, j; | |
445 | int pixel_size, resy, avwidth; | |
446 | double point_size; | |
447 | char *f[XLFD_LAST_INDEX + 1]; | |
448 | Lisp_Object val; | |
449 | int first_wildcard_field = -1, last_wildcard_field = XLFD_LAST_INDEX; | |
450 | ||
451 | if (len > 255) | |
452 | /* Maximum XLFD name length is 255. */ | |
453 | return -1; | |
454 | for (i = 0; *name; name++) | |
455 | if (*name == '-' | |
456 | && i < XLFD_LAST_INDEX) | |
457 | { | |
458 | f[i] = name; | |
459 | if (name[1] == '*' && (! name[2] || name[2] == '-')) | |
460 | { | |
461 | if (first_wildcard_field < 0) | |
462 | first_wildcard_field = i; | |
463 | last_wildcard_field = i; | |
464 | } | |
465 | i++; | |
466 | } | |
467 | ||
468 | f[XLFD_LAST_INDEX] = name; | |
469 | if (i < XLFD_LAST_INDEX) | |
470 | { | |
471 | /* Not a fully specified XLFD. */ | |
472 | if (first_wildcard_field < 0 ) | |
473 | /* No wild card. */ | |
474 | return -1; | |
475 | i--; | |
476 | if (last_wildcard_field < i) | |
477 | { | |
478 | /* Shift fields after the last wildcard field. */ | |
479 | for (j = XLFD_LAST_INDEX - 1; j > last_wildcard_field; j--, i--) | |
480 | f[j] = f[i]; | |
481 | /* Make all fields between the first and last wildcard fieled | |
482 | also wildcard fields. */ | |
483 | for (j--; j > first_wildcard_field; j--) | |
484 | f[j] = "-*"; | |
485 | } | |
486 | } | |
487 | f[XLFD_ENCODING_INDEX] = f[XLFD_LAST_INDEX]; | |
488 | ||
489 | if (! merge || NILP (AREF (font, FONT_FOUNDRY_INDEX))) | |
490 | ASET (font, FONT_FOUNDRY_INDEX, intern_font_field (f, XLFD_FOUNDRY_INDEX)); | |
491 | if (! merge || NILP (AREF (font, FONT_FAMILY_INDEX))) | |
492 | ASET (font, FONT_FAMILY_INDEX, intern_font_field (f, XLFD_FAMILY_INDEX)); | |
493 | if (! merge || NILP (AREF (font, FONT_ADSTYLE_INDEX))) | |
494 | ASET (font, FONT_ADSTYLE_INDEX, intern_font_field (f, XLFD_ADSTYLE_INDEX)); | |
495 | if (! merge || NILP (AREF (font, FONT_REGISTRY_INDEX))) | |
496 | ASET (font, FONT_REGISTRY_INDEX, intern_font_field (f, XLFD_REGISTRY_INDEX)); | |
497 | ||
498 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; | |
499 | j <= XLFD_SWIDTH_INDEX; i++, j++) | |
500 | if (! merge || NILP (AREF (font, i))) | |
501 | { | |
502 | if (isdigit(f[j][1])) | |
503 | val = make_number (atoi (f[j] + 1)); | |
504 | else | |
505 | { | |
506 | Lisp_Object sym = intern_font_field (f, j); | |
507 | ||
508 | val = prop_name_to_numeric (i, sym); | |
509 | if (NILP (val)) | |
510 | val = sym; | |
511 | } | |
512 | ASET (font, i, val); | |
513 | } | |
514 | ||
515 | if (f[XLFD_PIXEL_SIZE_INDEX][1] == '*') | |
516 | pixel_size = -1; /* indicates "unspecified" */ | |
517 | else if (f[XLFD_PIXEL_SIZE_INDEX][1] == '[') | |
518 | pixel_size = parse_matrix (f[XLFD_PIXEL_SIZE_INDEX] + 1); | |
519 | else if (isdigit (f[XLFD_PIXEL_SIZE_INDEX][1])) | |
520 | pixel_size = strtod (f[XLFD_PIXEL_SIZE_INDEX] + 1, NULL); | |
521 | else | |
522 | pixel_size = -1; | |
523 | ||
524 | if (pixel_size < 0 && FONT_ENTITY_P (font)) | |
525 | return -1; | |
526 | ||
527 | if (f[XLFD_POINT_SIZE_INDEX][1] == '*') | |
528 | point_size = -1; /* indicates "unspecified" */ | |
529 | else if (f[XLFD_POINT_SIZE_INDEX][1] == '[') | |
530 | point_size = parse_matrix (f[XLFD_POINT_SIZE_INDEX] + 1); | |
531 | else if (isdigit (f[XLFD_POINT_SIZE_INDEX][1])) | |
532 | point_size = strtod (f[XLFD_POINT_SIZE_INDEX] + 1, NULL); | |
533 | else | |
534 | point_size = -1; | |
535 | ||
536 | if (f[XLFD_RESY_INDEX][1] == '*') | |
537 | resy = -1; /* indicates "unspecified" */ | |
538 | else | |
539 | resy = strtod (f[XLFD_RESY_INDEX] + 1, NULL); | |
540 | ||
541 | if (f[XLFD_AVGWIDTH_INDEX][1] == '*') | |
542 | avwidth = -1; /* indicates "unspecified" */ | |
543 | else if (f[XLFD_AVGWIDTH_INDEX][1] == '~') | |
544 | avwidth = - strtod (f[XLFD_AVGWIDTH_INDEX] + 2, NULL); | |
545 | else | |
546 | avwidth = strtod (f[XLFD_AVGWIDTH_INDEX] + 1, NULL); | |
547 | ||
548 | if (! merge || NILP (AREF (font, FONT_SIZE_INDEX))) | |
549 | { | |
550 | if (pixel_size >= 0) | |
551 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); | |
552 | else | |
553 | { | |
554 | if (point_size >= 0) | |
555 | { | |
556 | if (resy > 0) | |
557 | { | |
558 | pixel_size = POINT_TO_PIXEL (point_size, resy); | |
559 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); | |
560 | } | |
561 | else | |
562 | { | |
563 | ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10)); | |
564 | } | |
565 | } | |
566 | else | |
567 | ASET (font, FONT_SIZE_INDEX, Qnil); | |
568 | } | |
569 | } | |
570 | ||
571 | if (FONT_ENTITY_P (font) | |
572 | && EQ (AREF (font, FONT_TYPE_INDEX), Qx)) | |
573 | ASET (font, FONT_EXTRA_INDEX, intern_font_field (f, XLFD_RESY_INDEX)); | |
574 | ||
575 | return (avwidth > 0 ? 2 : resy == 0); | |
576 | } | |
577 | ||
578 | /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES | |
579 | length), and return the name length. If FONT_SIZE_INDEX of FONT is | |
580 | 0, use PIXEL_SIZE instead. */ | |
581 | ||
582 | int | |
583 | font_unparse_xlfd (font, pixel_size, name, nbytes) | |
584 | Lisp_Object font; | |
585 | char *name; | |
586 | int nbytes; | |
587 | { | |
588 | char *f[XLFD_REGISTRY_INDEX + 1], *pixel_point; | |
589 | char work[256]; | |
590 | Lisp_Object val; | |
591 | int i, j, len = 0; | |
592 | ||
593 | xassert (FONTP (font)); | |
594 | ||
595 | for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; | |
596 | i++, j++) | |
597 | { | |
598 | if (i == FONT_ADSTYLE_INDEX) | |
599 | j = XLFD_ADSTYLE_INDEX; | |
600 | else if (i == FONT_REGISTRY_INDEX) | |
601 | j = XLFD_REGISTRY_INDEX; | |
602 | val = AREF (font, i); | |
603 | if (NILP (val)) | |
604 | f[j] = "*", len += 2; | |
605 | else | |
606 | { | |
607 | if (SYMBOLP (val)) | |
608 | val = SYMBOL_NAME (val); | |
609 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; | |
610 | } | |
611 | } | |
612 | ||
613 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; | |
614 | i++, j++) | |
615 | { | |
616 | val = AREF (font, i); | |
617 | if (NILP (val)) | |
618 | f[j] = "*", len += 2; | |
619 | else | |
620 | { | |
621 | if (INTEGERP (val)) | |
622 | val = prop_numeric_to_name (i, XINT (val)); | |
623 | if (SYMBOLP (val)) | |
624 | val = SYMBOL_NAME (val); | |
625 | xassert (STRINGP (val)); | |
626 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; | |
627 | } | |
628 | } | |
629 | ||
630 | val = AREF (font, FONT_SIZE_INDEX); | |
631 | xassert (NUMBERP (val) || NILP (val)); | |
632 | if (INTEGERP (val)) | |
633 | { | |
634 | i = XINT (val); | |
635 | if (i > 0) | |
636 | len += sprintf (work, "%d", i) + 1; | |
637 | else /* i == 0 */ | |
638 | len += sprintf (work, "%d-*", pixel_size) + 1; | |
639 | pixel_point = work; | |
640 | } | |
641 | else if (FLOATP (val)) | |
642 | { | |
643 | i = XFLOAT_DATA (val) * 10; | |
644 | len += sprintf (work, "*-%d", i) + 1; | |
645 | pixel_point = work; | |
646 | } | |
647 | else | |
648 | pixel_point = "*-*", len += 4; | |
649 | ||
650 | if (FONT_ENTITY_P (font) | |
651 | && EQ (AREF (font, FONT_TYPE_INDEX), Qx)) | |
652 | { | |
653 | /* Setup names for RESY-SPACING-AVWIDTH. */ | |
654 | val = AREF (font, FONT_EXTRA_INDEX); | |
655 | if (SYMBOLP (val) && ! NILP (val)) | |
656 | { | |
657 | val = SYMBOL_NAME (val); | |
658 | f[XLFD_RESY_INDEX] = (char *) SDATA (val), len += SBYTES (val) + 1; | |
659 | } | |
660 | else | |
661 | f[XLFD_RESY_INDEX] = "*-*-*", len += 6; | |
662 | } | |
663 | else | |
664 | f[XLFD_RESY_INDEX] = "*-*-*", len += 6; | |
665 | ||
666 | len += 3; /* for "-*" of resx, and terminating '\0'. */ | |
667 | if (len >= nbytes) | |
668 | return -1; | |
669 | return sprintf (name, "-%s-%s-%s-%s-%s-%s-%s-*-%s-%s", | |
670 | f[XLFD_FOUNDRY_INDEX], f[XLFD_FAMILY_INDEX], | |
671 | f[XLFD_WEIGHT_INDEX], f[XLFD_SLANT_INDEX], | |
672 | f[XLFD_SWIDTH_INDEX], | |
673 | f[XLFD_ADSTYLE_INDEX], pixel_point, | |
674 | f[XLFD_RESY_INDEX], f[XLFD_REGISTRY_INDEX]); | |
675 | } | |
676 | ||
677 | void | |
678 | font_merge_old_spec (name, family, registry, spec) | |
679 | Lisp_Object name, family, registry, spec; | |
680 | { | |
681 | if (STRINGP (name)) | |
682 | { | |
683 | if (font_parse_xlfd ((char *) SDATA (name), spec, 1) < 0) | |
684 | { | |
685 | Lisp_Object extra = Fcons (Fcons (QCname, name), Qnil); | |
686 | ||
687 | ASET (spec, FONT_EXTRA_INDEX, extra); | |
688 | } | |
689 | } | |
690 | else | |
691 | { | |
692 | if (! NILP (family)) | |
693 | { | |
694 | int len; | |
695 | char *p0, *p1; | |
696 | ||
697 | xassert (STRINGP (family)); | |
698 | len = SBYTES (family); | |
699 | p0 = (char *) SDATA (family); | |
700 | p1 = index (p0, '-'); | |
701 | if (p1) | |
702 | { | |
703 | if (NILP (AREF (spec, FONT_FOUNDRY_INDEX))) | |
704 | ASET (spec, FONT_FOUNDRY_INDEX, | |
705 | intern_downcase (p0, p1 - p0)); | |
706 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) | |
707 | ASET (spec, FONT_FAMILY_INDEX, | |
708 | intern_downcase (p1 + 1, len - (p1 + 1 - p0))); | |
709 | } | |
710 | else if (NILP (AREF (spec, FONT_FAMILY_INDEX))) | |
711 | ASET (spec, FONT_FAMILY_INDEX, intern_downcase (p0, len)); | |
712 | } | |
713 | if (! NILP (registry) | |
714 | && NILP (AREF (spec, FONT_REGISTRY_INDEX))) | |
715 | ASET (spec, FONT_REGISTRY_INDEX, | |
716 | intern_downcase ((char *) SDATA (registry), SBYTES (registry))); | |
717 | } | |
718 | } | |
719 | ||
720 | \f | |
721 | /* OTF handler */ | |
722 | ||
723 | #ifdef HAVE_LIBOTF | |
724 | #include <otf.h> | |
725 | ||
726 | struct otf_list | |
727 | { | |
728 | Lisp_Object entity; | |
729 | OTF *otf; | |
730 | struct otf_list *next; | |
731 | }; | |
732 | ||
733 | static struct otf_list *otf_list; | |
734 | ||
735 | static Lisp_Object | |
736 | otf_tag_symbol (tag) | |
737 | OTF_Tag tag; | |
738 | { | |
739 | char name[5]; | |
740 | ||
741 | OTF_tag_name (tag, name); | |
742 | return Fintern (make_unibyte_string (name, 4), Qnil); | |
743 | } | |
744 | ||
745 | static OTF * | |
746 | otf_open (entity, file) | |
747 | Lisp_Object entity; | |
748 | char *file; | |
749 | { | |
750 | struct otf_list *list = otf_list; | |
751 | ||
752 | while (list && ! EQ (list->entity, entity)) | |
753 | list = list->next; | |
754 | if (! list) | |
755 | { | |
756 | list = malloc (sizeof (struct otf_list)); | |
757 | list->entity = entity; | |
758 | list->otf = file ? OTF_open (file) : NULL; | |
759 | list->next = otf_list; | |
760 | otf_list = list; | |
761 | } | |
762 | return list->otf; | |
763 | } | |
764 | ||
765 | ||
766 | /* Return a list describing which scripts/languages FONT supports by | |
767 | which GSUB/GPOS features of OpenType tables. See the comment of | |
768 | (sturct font_driver).otf_capability. */ | |
769 | ||
770 | Lisp_Object | |
771 | font_otf_capability (font) | |
772 | struct font *font; | |
773 | { | |
774 | OTF *otf; | |
775 | Lisp_Object capability = Fcons (Qnil, Qnil); | |
776 | int i; | |
777 | ||
778 | otf = otf_open (font->entity, font->file_name); | |
779 | if (! otf) | |
780 | return Qnil; | |
781 | for (i = 0; i < 2; i++) | |
782 | { | |
783 | OTF_GSUB_GPOS *gsub_gpos; | |
784 | Lisp_Object script_list = Qnil; | |
785 | int j; | |
786 | ||
787 | if (OTF_get_features (otf, i == 0) < 0) | |
788 | continue; | |
789 | gsub_gpos = i == 0 ? otf->gsub : otf->gpos; | |
790 | for (j = gsub_gpos->ScriptList.ScriptCount - 1; j >= 0; j--) | |
791 | { | |
792 | OTF_Script *script = gsub_gpos->ScriptList.Script + j; | |
793 | Lisp_Object langsys_list = Qnil; | |
794 | Lisp_Object script_tag = otf_tag_symbol (script->ScriptTag); | |
795 | int k; | |
796 | ||
797 | for (k = script->LangSysCount; k >= 0; k--) | |
798 | { | |
799 | OTF_LangSys *langsys; | |
800 | Lisp_Object feature_list = Qnil; | |
801 | Lisp_Object langsys_tag; | |
802 | int l; | |
803 | ||
804 | if (j == script->LangSysCount) | |
805 | { | |
806 | langsys = &script->DefaultLangSys; | |
807 | langsys_tag = Qnil; | |
808 | } | |
809 | else | |
810 | { | |
811 | langsys = script->LangSys + k; | |
812 | langsys_tag | |
813 | = otf_tag_symbol (script->LangSysRecord[k].LangSysTag); | |
814 | } | |
815 | for (l = langsys->FeatureCount -1; l >= 0; l--) | |
816 | { | |
817 | OTF_Feature *feature | |
818 | = gsub_gpos->FeatureList.Feature + langsys->FeatureIndex[l]; | |
819 | Lisp_Object feature_tag | |
820 | = otf_tag_symbol (feature->FeatureTag); | |
821 | ||
822 | feature_list = Fcons (feature_tag, feature_list); | |
823 | } | |
824 | langsys_list = Fcons (Fcons (langsys_tag, feature_list), | |
825 | langsys_list); | |
826 | } | |
827 | script_list = Fcons (Fcons (script_tag, langsys_list), | |
828 | script_list); | |
829 | } | |
830 | ||
831 | if (i == 0) | |
832 | XSETCAR (capability, script_list); | |
833 | else | |
834 | XSETCDR (capability, script_list); | |
835 | } | |
836 | ||
837 | return capability; | |
838 | } | |
839 | ||
840 | static int | |
841 | parse_gsub_gpos_spec (spec, script, langsys, features) | |
842 | Lisp_Object spec; | |
843 | char **script, **langsys, **features; | |
844 | { | |
845 | Lisp_Object val; | |
846 | int len; | |
847 | char *p; | |
848 | int asterisk; | |
849 | ||
850 | val = XCAR (spec); | |
851 | *script = (char *) SDATA (SYMBOL_NAME (val)); | |
852 | spec = XCDR (spec); | |
853 | val = XCAR (spec); | |
854 | *langsys = NILP (val) ? NULL : (char *) SDATA (SYMBOL_NAME (val)); | |
855 | spec = XCDR (spec); | |
856 | len = XINT (Flength (spec)); | |
857 | *features = p = malloc (6 * len); | |
858 | if (! p) | |
859 | return -1; | |
860 | ||
861 | for (asterisk = 0; CONSP (spec); spec = XCDR (spec)) | |
862 | { | |
863 | val = XCAR (spec); | |
864 | if (SREF (SYMBOL_NAME (val), 0) == '*') | |
865 | { | |
866 | asterisk = 1; | |
867 | p += sprintf (p, ",*"); | |
868 | } | |
869 | else if (! asterisk) | |
870 | p += sprintf (p, ",%s", SDATA (SYMBOL_NAME (val))); | |
871 | else | |
872 | p += sprintf (p, ",~%s", SDATA (SYMBOL_NAME (val))); | |
873 | } | |
874 | return 0; | |
875 | } | |
876 | ||
877 | #define DEVICE_DELTA(table, size) \ | |
878 | (((size) >= (table).StartSize && (size) <= (table).EndSize) \ | |
879 | ? (table).DeltaValue[(size) >= (table).StartSize] \ | |
880 | : 0) | |
881 | ||
882 | void | |
883 | adjust_anchor (struct font *font, OTF_Anchor *anchor, | |
884 | unsigned code, int size, int *x, int *y) | |
885 | { | |
886 | if (anchor->AnchorFormat == 2) | |
887 | { | |
888 | int x0, y0; | |
889 | ||
890 | if (font->driver->anchor_point (font, code, anchor->f.f1.AnchorPoint, | |
891 | &x0, &y0) >= 0) | |
892 | *x = x0, *y = y0; | |
893 | } | |
894 | else if (anchor->AnchorFormat == 3) | |
895 | { | |
896 | if (anchor->f.f2.XDeviceTable.offset) | |
897 | *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, size); | |
898 | if (anchor->f.f2.YDeviceTable.offset) | |
899 | *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, size); | |
900 | } | |
901 | } | |
902 | ||
903 | ||
904 | /* Drive FONT's OTF GSUB features according to GSUB_SPEC. See the | |
905 | comment of (sturct font_driver).otf_gsub. */ | |
906 | ||
907 | int | |
908 | font_otf_gsub (font, gsub_spec, gstring_in, from, to, gstring_out, idx) | |
909 | struct font *font; | |
910 | Lisp_Object gsub_spec; | |
911 | Lisp_Object gstring_in; | |
912 | int from, to; | |
913 | Lisp_Object gstring_out; | |
914 | int idx; | |
915 | { | |
916 | int len; | |
917 | int i; | |
918 | OTF *otf; | |
919 | OTF_GlyphString otf_gstring; | |
920 | OTF_Glyph *g; | |
921 | char *script, *langsys, *features; | |
922 | ||
923 | otf = otf_open (font->entity, font->file_name); | |
924 | if (! otf) | |
925 | return 0; | |
926 | if (OTF_get_table (otf, "head") < 0) | |
927 | return 0; | |
928 | if (OTF_check_table (otf, "GSUB") < 0) | |
929 | return 0; | |
930 | if (parse_gsub_gpos_spec (gsub_spec, &script, &langsys, &features) < 0) | |
931 | return 0; | |
932 | len = to - from; | |
933 | otf_gstring.size = otf_gstring.used = len; | |
934 | otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len); | |
935 | memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len); | |
936 | for (i = 0; i < len; i++) | |
937 | { | |
938 | Lisp_Object g = LGSTRING_GLYPH (gstring_in, from + i); | |
939 | ||
940 | otf_gstring.glyphs[i].c = XINT (LGLYPH_CHAR (g)); | |
941 | otf_gstring.glyphs[i].glyph_id = XINT (LGLYPH_CODE (g)); | |
942 | } | |
943 | ||
944 | OTF_drive_gdef (otf, &otf_gstring); | |
945 | if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, features) < 0) | |
946 | { | |
947 | free (otf_gstring.glyphs); | |
948 | return 0; | |
949 | } | |
950 | if (ASIZE (gstring_out) < idx + otf_gstring.used) | |
951 | { | |
952 | free (otf_gstring.glyphs); | |
953 | return -1; | |
954 | } | |
955 | ||
956 | for (i = 0, g = otf_gstring.glyphs; i < otf_gstring.used;) | |
957 | { | |
958 | int i0 = g->f.index.from, i1 = g->f.index.to; | |
959 | Lisp_Object glyph = LGSTRING_GLYPH (gstring_in, from + i0); | |
960 | Lisp_Object min_idx = AREF (glyph, 0); | |
961 | Lisp_Object max_idx = AREF (glyph, 1); | |
962 | ||
963 | if (i0 < i1) | |
964 | { | |
965 | int min_idx_i = XINT (min_idx), max_idx_i = XINT (max_idx); | |
966 | ||
967 | for (i0++; i0 <= i1; i0++) | |
968 | { | |
969 | glyph = LGSTRING_GLYPH (gstring_in, from + i0); | |
970 | if (min_idx_i > XINT (AREF (glyph, 0))) | |
971 | min_idx_i = XINT (AREF (glyph, 0)); | |
972 | if (max_idx_i < XINT (AREF (glyph, 1))) | |
973 | max_idx_i = XINT (AREF (glyph, 1)); | |
974 | } | |
975 | min_idx = make_number (min_idx_i); | |
976 | max_idx = make_number (max_idx_i); | |
977 | i0 = g->f.index.from; | |
978 | } | |
979 | for (; i < otf_gstring.used && g->f.index.from == i0; i++, g++) | |
980 | { | |
981 | glyph = LGSTRING_GLYPH (gstring_out, idx + i); | |
982 | ASET (glyph, 0, min_idx); | |
983 | ASET (glyph, 1, max_idx); | |
984 | LGLYPH_SET_CHAR (glyph, make_number (g->c)); | |
985 | LGLYPH_SET_CODE (glyph, make_number (g->glyph_id)); | |
986 | } | |
987 | } | |
988 | ||
989 | free (otf_gstring.glyphs); | |
990 | return i; | |
991 | } | |
992 | ||
993 | /* Drive FONT's OTF GPOS features according to GPOS_SPEC. See the | |
994 | comment of (sturct font_driver).otf_gpos. */ | |
995 | ||
996 | int | |
997 | font_otf_gpos (font, gpos_spec, gstring, from, to) | |
998 | struct font *font; | |
999 | Lisp_Object gpos_spec; | |
1000 | Lisp_Object gstring; | |
1001 | int from, to; | |
1002 | { | |
1003 | int len; | |
1004 | int i; | |
1005 | OTF *otf; | |
1006 | OTF_GlyphString otf_gstring; | |
1007 | OTF_Glyph *g; | |
1008 | char *script, *langsys, *features; | |
1009 | Lisp_Object glyph; | |
1010 | int u, size; | |
1011 | Lisp_Object base, mark; | |
1012 | ||
1013 | otf = otf_open (font->entity, font->file_name); | |
1014 | if (! otf) | |
1015 | return 0; | |
1016 | if (OTF_get_table (otf, "head") < 0) | |
1017 | return 0; | |
1018 | if (OTF_check_table (otf, "GPOS") < 0) | |
1019 | return 0; | |
1020 | if (parse_gsub_gpos_spec (gpos_spec, &script, &langsys, &features) < 0) | |
1021 | return 0; | |
1022 | len = to - from; | |
1023 | otf_gstring.size = otf_gstring.used = len; | |
1024 | otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len); | |
1025 | memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len); | |
1026 | for (i = 0; i < len; i++) | |
1027 | { | |
1028 | glyph = LGSTRING_GLYPH (gstring, from + i); | |
1029 | otf_gstring.glyphs[i].glyph_id = XINT (LGLYPH_CODE (glyph)); | |
1030 | } | |
1031 | ||
1032 | OTF_drive_gdef (otf, &otf_gstring); | |
1033 | ||
1034 | if (OTF_drive_gpos (otf, &otf_gstring, script, langsys, features) < 0) | |
1035 | { | |
1036 | free (otf_gstring.glyphs); | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | u = otf->head->unitsPerEm; | |
1041 | size = font->pixel_size; | |
1042 | base = mark = Qnil; | |
1043 | for (i = 0, g = otf_gstring.glyphs; i < otf_gstring.used; i++, g++) | |
1044 | { | |
1045 | Lisp_Object prev; | |
1046 | int xoff = 0, yoff = 0, width_adjust = 0; | |
1047 | ||
1048 | if (! g->glyph_id) | |
1049 | continue; | |
1050 | ||
1051 | glyph = LGSTRING_GLYPH (gstring, from + i); | |
1052 | switch (g->positioning_type) | |
1053 | { | |
1054 | case 0: | |
1055 | break; | |
1056 | case 1: case 2: | |
1057 | { | |
1058 | int format = g->f.f1.format; | |
1059 | ||
1060 | if (format & OTF_XPlacement) | |
1061 | xoff = g->f.f1.value->XPlacement * size / u; | |
1062 | if (format & OTF_XPlaDevice) | |
1063 | xoff += DEVICE_DELTA (g->f.f1.value->XPlaDevice, size); | |
1064 | if (format & OTF_YPlacement) | |
1065 | yoff = - (g->f.f1.value->YPlacement * size / u); | |
1066 | if (format & OTF_YPlaDevice) | |
1067 | yoff -= DEVICE_DELTA (g->f.f1.value->YPlaDevice, size); | |
1068 | if (format & OTF_XAdvance) | |
1069 | width_adjust += g->f.f1.value->XAdvance * size / u; | |
1070 | if (format & OTF_XAdvDevice) | |
1071 | width_adjust += DEVICE_DELTA (g->f.f1.value->XAdvDevice, size); | |
1072 | } | |
1073 | break; | |
1074 | case 3: | |
1075 | /* Not yet supported. */ | |
1076 | break; | |
1077 | case 4: case 5: | |
1078 | if (NILP (base)) | |
1079 | break; | |
1080 | prev = base; | |
1081 | goto label_adjust_anchor; | |
1082 | default: /* i.e. case 6 */ | |
1083 | if (NILP (mark)) | |
1084 | break; | |
1085 | prev = mark; | |
1086 | ||
1087 | label_adjust_anchor: | |
1088 | { | |
1089 | int base_x, base_y, mark_x, mark_y, width; | |
1090 | unsigned code; | |
1091 | ||
1092 | base_x = g->f.f4.base_anchor->XCoordinate * size / u; | |
1093 | base_y = g->f.f4.base_anchor->YCoordinate * size / u; | |
1094 | mark_x = g->f.f4.mark_anchor->XCoordinate * size / u; | |
1095 | mark_y = g->f.f4.mark_anchor->YCoordinate * size / u; | |
1096 | ||
1097 | code = XINT (LGLYPH_CODE (prev)); | |
1098 | if (g->f.f4.base_anchor->AnchorFormat != 1) | |
1099 | adjust_anchor (font, g->f.f4.base_anchor, | |
1100 | code, size, &base_x, &base_y); | |
1101 | if (g->f.f4.mark_anchor->AnchorFormat != 1) | |
1102 | adjust_anchor (font, g->f.f4.mark_anchor, | |
1103 | code, size, &mark_x, &mark_y); | |
1104 | ||
1105 | if (NILP (LGLYPH_WIDTH (prev))) | |
1106 | { | |
1107 | width = font->driver->text_extents (font, &code, 1, NULL); | |
1108 | LGLYPH_SET_WIDTH (prev, make_number (width)); | |
1109 | } | |
1110 | xoff = XINT (LGLYPH_XOFF (prev)) + (base_x - width) - mark_x; | |
1111 | yoff = XINT (LGLYPH_YOFF (prev)) + mark_y - base_y; | |
1112 | } | |
1113 | } | |
1114 | if (g->GlyphClass == OTF_GlyphClass0) | |
1115 | base = mark = glyph; | |
1116 | else if (g->GlyphClass == OTF_GlyphClassMark) | |
1117 | mark = glyph; | |
1118 | else | |
1119 | base = glyph; | |
1120 | ||
1121 | LGLYPH_SET_XOFF (glyph, make_number (xoff)); | |
1122 | LGLYPH_SET_YOFF (glyph, make_number (yoff)); | |
1123 | LGLYPH_SET_WADJUST (glyph, make_number (width_adjust)); | |
1124 | } | |
1125 | ||
1126 | free (otf_gstring.glyphs); | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | #endif /* HAVE_LIBOTF */ | |
1131 | ||
1132 | \f | |
1133 | /* glyph-string handler */ | |
1134 | ||
1135 | /* GSTRING is a vector of this form: | |
1136 | [ [FONT-OBJECT LBEARING RBEARING WITH ASCENT DESCENT] GLYPH ... ] | |
1137 | and GLYPH is a vector of this form: | |
1138 | [ FROM-IDX TO-IDX C CODE X-OFF Y-OFF WIDTH WADJUST ] | |
1139 | where | |
1140 | FROM-IDX and TO-IDX are used internally and should not be touched. | |
1141 | C is a character of the glyph. | |
1142 | CODE is a glyph-code of C in FONT-OBJECT. | |
1143 | X-OFF and Y-OFF are offests to the base position for the glyph. | |
1144 | WIDTH is a normal width of the glyph. | |
1145 | WADJUST is an adjustment to the normal width of the glyph. */ | |
1146 | ||
1147 | struct font * | |
1148 | font_prepare_composition (cmp) | |
1149 | struct composition *cmp; | |
1150 | { | |
1151 | Lisp_Object gstring | |
1152 | = AREF (XHASH_TABLE (composition_hash_table)->key_and_value, | |
1153 | cmp->hash_index * 2); | |
1154 | struct font *font = XSAVE_VALUE (LGSTRING_FONT (gstring))->pointer; | |
1155 | int len = LGSTRING_LENGTH (gstring); | |
1156 | int i; | |
1157 | ||
1158 | cmp->font = font; | |
1159 | cmp->lbearing = cmp->rbearing = cmp->pixel_width = 0; | |
1160 | cmp->ascent = font->ascent; | |
1161 | cmp->descent = font->descent; | |
1162 | ||
1163 | for (i = 0; i < len; i++) | |
1164 | { | |
1165 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
1166 | unsigned code = XINT (LGLYPH_CODE (g)); | |
1167 | struct font_metrics metrics; | |
1168 | ||
1169 | font->driver->text_extents (font, &code, 1, &metrics); | |
1170 | LGLYPH_SET_WIDTH (g, make_number (metrics.width)); | |
1171 | metrics.lbearing += XINT (LGLYPH_XOFF (g)); | |
1172 | metrics.rbearing += XINT (LGLYPH_XOFF (g)); | |
1173 | metrics.ascent += XINT (LGLYPH_YOFF (g)); | |
1174 | metrics.descent += XINT (LGLYPH_YOFF (g)); | |
1175 | ||
1176 | if (cmp->lbearing > cmp->pixel_width + metrics.lbearing) | |
1177 | cmp->lbearing = cmp->pixel_width + metrics.lbearing; | |
1178 | if (cmp->rbearing < cmp->pixel_width + metrics.rbearing) | |
1179 | cmp->rbearing = cmp->pixel_width + metrics.rbearing; | |
1180 | if (cmp->ascent < metrics.ascent) | |
1181 | cmp->ascent = metrics.ascent; | |
1182 | if (cmp->descent < metrics.descent) | |
1183 | cmp->descent = metrics.descent; | |
1184 | cmp->pixel_width += metrics.width + XINT (LGLYPH_WADJUST (g)); | |
1185 | } | |
1186 | LGSTRING_SET_LBEARING (gstring, make_number (cmp->lbearing)); | |
1187 | LGSTRING_SET_RBEARING (gstring, make_number (cmp->rbearing)); | |
1188 | LGSTRING_SET_WIDTH (gstring, make_number (cmp->pixel_width)); | |
1189 | LGSTRING_SET_ASCENT (gstring, make_number (cmp->ascent)); | |
1190 | LGSTRING_SET_DESCENT (gstring, make_number (cmp->descent)); | |
1191 | ||
1192 | return font; | |
1193 | } | |
1194 | ||
1195 | int | |
1196 | font_gstring_produce (old, from, to, new, idx, code, n) | |
1197 | Lisp_Object old; | |
1198 | int from, to; | |
1199 | Lisp_Object new; | |
1200 | int idx; | |
1201 | unsigned *code; | |
1202 | int n; | |
1203 | { | |
1204 | Lisp_Object min_idx, max_idx; | |
1205 | int i; | |
1206 | ||
1207 | if (idx + n > ASIZE (new)) | |
1208 | return -1; | |
1209 | if (from == to) | |
1210 | { | |
1211 | if (from == 0) | |
1212 | { | |
1213 | min_idx = make_number (0); | |
1214 | max_idx = make_number (1); | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | min_idx = AREF (AREF (old, from - 1), 0); | |
1219 | max_idx = AREF (AREF (old, from - 1), 1); | |
1220 | } | |
1221 | } | |
1222 | else if (from + 1 == to) | |
1223 | { | |
1224 | min_idx = AREF (AREF (old, from), 0); | |
1225 | max_idx = AREF (AREF (old, from), 1); | |
1226 | } | |
1227 | else | |
1228 | { | |
1229 | int min_idx_i = XINT (AREF (AREF (old, from), 0)); | |
1230 | int max_idx_i = XINT (AREF (AREF (old, from), 1)); | |
1231 | ||
1232 | for (i = from + 1; i < to; i++) | |
1233 | { | |
1234 | if (min_idx_i > XINT (AREF (AREF (old, i), 0))) | |
1235 | min_idx_i = XINT (AREF (AREF (old, i), 0)); | |
1236 | if (max_idx_i < XINT (AREF (AREF (old, i), 1))) | |
1237 | max_idx_i = XINT (AREF (AREF (old, i), 1)); | |
1238 | } | |
1239 | min_idx = make_number (min_idx_i); | |
1240 | max_idx = make_number (max_idx_i); | |
1241 | } | |
1242 | ||
1243 | for (i = 0; i < n; i++) | |
1244 | { | |
1245 | ASET (AREF (new, idx + i), 0, min_idx); | |
1246 | ASET (AREF (new, idx + i), 1, max_idx); | |
1247 | ASET (AREF (new, idx + i), 2, make_number (code[i])); | |
1248 | } | |
1249 | ||
1250 | return 0; | |
1251 | } | |
1252 | \f | |
1253 | /* Font sorting */ | |
1254 | ||
1255 | static unsigned font_score P_ ((Lisp_Object, Lisp_Object)); | |
1256 | static int font_compare P_ ((const void *, const void *)); | |
1257 | static Lisp_Object font_sort_entites P_ ((Lisp_Object, Lisp_Object, | |
1258 | Lisp_Object, Lisp_Object)); | |
1259 | ||
1260 | /* We sort fonts by scoring each of them against a specified | |
1261 | font-spec. The score value is 32 bit (`unsigned'), and the smaller | |
1262 | the value is, the closer the font is to the font-spec. | |
1263 | ||
1264 | Each 1-bit in the highest 4 bits of the score is used for atomic | |
1265 | properties FOUNDRY, FAMILY, ADSTYLE, and REGISTRY. | |
1266 | ||
1267 | Each 7-bit in the lowest 28 bits are used for numeric properties | |
1268 | WEIGHT, SLANT, WIDTH, and SIZE. */ | |
1269 | ||
1270 | /* How many bits to shift to store the difference value of each font | |
1271 | property in a score. */ | |
1272 | static int sort_shift_bits[FONT_SIZE_INDEX + 1]; | |
1273 | ||
1274 | /* Score font-entity ENTITY against font-spec SPEC. The return value | |
1275 | indicates how different ENTITY is compared with SPEC. */ | |
1276 | ||
1277 | static unsigned | |
1278 | font_score (entity, spec) | |
1279 | Lisp_Object entity, spec; | |
1280 | { | |
1281 | unsigned score = 0; | |
1282 | int i; | |
1283 | /* Score atomic fields. Maximum difference is 1. */ | |
1284 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) | |
1285 | { | |
1286 | Lisp_Object val = AREF (spec, i); | |
1287 | ||
1288 | if (! NILP (val) | |
1289 | && ! EQ (val, AREF (entity, i))) | |
1290 | score |= 1 << sort_shift_bits[i]; | |
1291 | } | |
1292 | ||
1293 | /* Score numeric fields. Maximum difference is 127. */ | |
1294 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) | |
1295 | { | |
1296 | Lisp_Object spec_val = AREF (spec, i); | |
1297 | Lisp_Object entity_val = AREF (entity, i); | |
1298 | ||
1299 | if (! NILP (spec_val) && ! EQ (spec_val, entity_val)) | |
1300 | { | |
1301 | if (! INTEGERP (entity_val)) | |
1302 | score |= 127 << sort_shift_bits[i]; | |
1303 | else if (i < FONT_SIZE_INDEX | |
1304 | || XINT (entity_val) != 0) | |
1305 | { | |
1306 | int diff = XINT (entity_val) - XINT (spec_val); | |
1307 | ||
1308 | if (diff < 0) | |
1309 | diff = - diff; | |
1310 | score |= min (diff, 127) << sort_shift_bits[i]; | |
1311 | } | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | return score; | |
1316 | } | |
1317 | ||
1318 | ||
1319 | /* The comparison function for qsort. */ | |
1320 | ||
1321 | static int | |
1322 | font_compare (d1, d2) | |
1323 | const void *d1, *d2; | |
1324 | { | |
1325 | return (*(unsigned *) d1 < *(unsigned *) d2 | |
1326 | ? -1 : *(unsigned *) d1 > *(unsigned *) d2); | |
1327 | } | |
1328 | ||
1329 | ||
1330 | /* The structure for elements being sorted by qsort. */ | |
1331 | struct font_sort_data | |
1332 | { | |
1333 | unsigned score; | |
1334 | Lisp_Object entity; | |
1335 | }; | |
1336 | ||
1337 | ||
1338 | /* Sort font-entities in vector VEC by closeness to font-spec PREFER. | |
1339 | If PREFER specifies a point-size, calculate the corresponding | |
1340 | pixel-size from the Y-resolution of FRAME before sorting. If SPEC | |
1341 | is not nil, it is a font-spec to get the font-entities in VEC. */ | |
1342 | ||
1343 | static Lisp_Object | |
1344 | font_sort_entites (vec, prefer, frame, spec) | |
1345 | Lisp_Object vec, prefer, frame, spec; | |
1346 | { | |
1347 | Lisp_Object size; | |
1348 | int len, i; | |
1349 | struct font_sort_data *data; | |
1350 | int prefer_is_copy = 0; | |
1351 | USE_SAFE_ALLOCA; | |
1352 | ||
1353 | len = ASIZE (vec); | |
1354 | if (len <= 1) | |
1355 | return vec; | |
1356 | ||
1357 | size = AREF (spec, FONT_SIZE_INDEX); | |
1358 | if (FLOATP (size)) | |
1359 | { | |
1360 | double point_size = XFLOAT_DATA (size) * 10; | |
1361 | int pixel_size = POINT_TO_PIXEL (point_size, XFRAME (frame)->resy); | |
1362 | ||
1363 | prefer = Fcopy_sequence (prefer); | |
1364 | ASET (prefer, FONT_SIZE_INDEX, make_number (pixel_size)); | |
1365 | prefer_is_copy = 1; | |
1366 | } | |
1367 | ||
1368 | if (! NILP (spec)) | |
1369 | { | |
1370 | /* As it is assured that all fonts in VEC match with SPEC, we | |
1371 | should ignore properties specified in SPEC. So, set the | |
1372 | corresponding properties in PREFER nil. */ | |
1373 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) | |
1374 | if (! NILP (AREF (spec, i)) && ! NILP (AREF (prefer, i))) | |
1375 | break; | |
1376 | if (i <= FONT_SIZE_INDEX) | |
1377 | { | |
1378 | if (! prefer_is_copy) | |
1379 | prefer = Fcopy_sequence (prefer); | |
1380 | for (; i <= FONT_SIZE_INDEX; i++) | |
1381 | if (! NILP (AREF (spec, i)) && ! NILP (AREF (prefer, i))) | |
1382 | ASET (prefer, i, Qnil); | |
1383 | } | |
1384 | } | |
1385 | ||
1386 | /* Scoring and sorting. */ | |
1387 | SAFE_ALLOCA (data, struct font_sort_data *, (sizeof *data) * len); | |
1388 | for (i = 0; i < len; i++) | |
1389 | { | |
1390 | data[i].entity = AREF (vec, i); | |
1391 | data[i].score = font_score (data[i].entity, prefer); | |
1392 | } | |
1393 | qsort (data, len, sizeof *data, font_compare); | |
1394 | for (i = 0; i < len; i++) | |
1395 | ASET (vec, i, data[i].entity); | |
1396 | SAFE_FREE (); | |
1397 | ||
1398 | return vec; | |
1399 | } | |
1400 | ||
1401 | \f | |
1402 | /* API of Font Service Layer. */ | |
1403 | ||
1404 | void | |
1405 | font_update_sort_order (order) | |
1406 | int *order; | |
1407 | { | |
1408 | int i, shift_bits = 21; | |
1409 | ||
1410 | for (i = 0; i < 4; i++, shift_bits -= 7) | |
1411 | { | |
1412 | int xlfd_idx = order[i]; | |
1413 | ||
1414 | if (xlfd_idx == XLFD_WEIGHT_INDEX) | |
1415 | sort_shift_bits[FONT_WEIGHT_INDEX] = shift_bits; | |
1416 | else if (xlfd_idx == XLFD_SLANT_INDEX) | |
1417 | sort_shift_bits[FONT_SLANT_INDEX] = shift_bits; | |
1418 | else if (xlfd_idx == XLFD_SWIDTH_INDEX) | |
1419 | sort_shift_bits[FONT_WIDTH_INDEX] = shift_bits; | |
1420 | else | |
1421 | sort_shift_bits[FONT_SIZE_INDEX] = shift_bits; | |
1422 | } | |
1423 | } | |
1424 | ||
1425 | Lisp_Object | |
1426 | font_symbolic_weight (font) | |
1427 | Lisp_Object font; | |
1428 | { | |
1429 | Lisp_Object weight = AREF (font, FONT_WEIGHT_INDEX); | |
1430 | ||
1431 | if (INTEGERP (weight)) | |
1432 | weight = prop_numeric_to_name (FONT_WEIGHT_INDEX, XINT (weight)); | |
1433 | return weight; | |
1434 | } | |
1435 | ||
1436 | Lisp_Object | |
1437 | font_symbolic_slant (font) | |
1438 | Lisp_Object font; | |
1439 | { | |
1440 | Lisp_Object slant = AREF (font, FONT_SLANT_INDEX); | |
1441 | ||
1442 | if (INTEGERP (slant)) | |
1443 | slant = prop_numeric_to_name (FONT_SLANT_INDEX, XINT (slant)); | |
1444 | return slant; | |
1445 | } | |
1446 | ||
1447 | Lisp_Object | |
1448 | font_symbolic_width (font) | |
1449 | Lisp_Object font; | |
1450 | { | |
1451 | Lisp_Object width = AREF (font, FONT_WIDTH_INDEX); | |
1452 | ||
1453 | if (INTEGERP (width)) | |
1454 | width = prop_numeric_to_name (FONT_WIDTH_INDEX, XINT (width)); | |
1455 | return width; | |
1456 | } | |
1457 | ||
1458 | Lisp_Object | |
1459 | font_find_object (font) | |
1460 | struct font *font; | |
1461 | { | |
1462 | Lisp_Object tail, elt; | |
1463 | ||
1464 | for (tail = AREF (font->entity, FONT_OBJLIST_INDEX); CONSP (tail); | |
1465 | tail = XCDR (tail)) | |
1466 | { | |
1467 | elt = XCAR (tail); | |
1468 | if (font == XSAVE_VALUE (elt)->pointer | |
1469 | && XSAVE_VALUE (elt)->integer > 0) | |
1470 | return elt; | |
1471 | } | |
1472 | abort (); | |
1473 | return Qnil; | |
1474 | } | |
1475 | ||
1476 | static Lisp_Object scratch_font_spec, scratch_font_prefer; | |
1477 | ||
1478 | /* Return a vector of font-entities matching with SPEC on frame F. */ | |
1479 | ||
1480 | static Lisp_Object | |
1481 | font_list_entities (frame, spec) | |
1482 | Lisp_Object frame, spec; | |
1483 | { | |
1484 | FRAME_PTR f = XFRAME (frame); | |
1485 | struct font_driver_list *driver_list = f->font_driver_list; | |
1486 | Lisp_Object ftype, family, alternate_familes; | |
1487 | Lisp_Object *vec = alloca (sizeof (Lisp_Object) * num_font_drivers); | |
1488 | int i; | |
1489 | ||
1490 | if (! vec) | |
1491 | return null_vector; | |
1492 | ||
1493 | family = AREF (spec, FONT_FAMILY_INDEX); | |
1494 | if (NILP (family)) | |
1495 | alternate_familes = Qnil; | |
1496 | else | |
1497 | { | |
1498 | if (NILP (font_family_alist) | |
1499 | && !NILP (Vface_alternative_font_family_alist)) | |
1500 | build_font_family_alist (); | |
1501 | alternate_familes = assq_no_quit (family, font_family_alist); | |
1502 | if (! NILP (alternate_familes)) | |
1503 | alternate_familes = XCDR (alternate_familes); | |
1504 | } | |
1505 | xassert (ASIZE (spec) == FONT_SPEC_MAX); | |
1506 | ftype = AREF (spec, FONT_TYPE_INDEX); | |
1507 | ||
1508 | for (i = 0; driver_list; driver_list = driver_list->next) | |
1509 | if (NILP (ftype) || EQ (driver_list->driver->type, ftype)) | |
1510 | { | |
1511 | Lisp_Object cache = driver_list->driver->get_cache (frame); | |
1512 | Lisp_Object tail = alternate_familes; | |
1513 | Lisp_Object val; | |
1514 | ||
1515 | xassert (CONSP (cache)); | |
1516 | ASET (spec, FONT_TYPE_INDEX, driver_list->driver->type); | |
1517 | ASET (spec, FONT_FAMILY_INDEX, family); | |
1518 | ||
1519 | while (1) | |
1520 | { | |
1521 | val = assoc_no_quit (spec, XCDR (cache)); | |
1522 | if (CONSP (val)) | |
1523 | val = XCDR (val); | |
1524 | else | |
1525 | { | |
1526 | val = driver_list->driver->list (frame, spec); | |
1527 | if (VECTORP (val)) | |
1528 | XSETCDR (cache, Fcons (Fcons (Fcopy_sequence (spec), val), | |
1529 | XCDR (cache))); | |
1530 | } | |
1531 | if (VECTORP (val) && ASIZE (val) > 0) | |
1532 | { | |
1533 | vec[i++] = val; | |
1534 | break; | |
1535 | } | |
1536 | if (NILP (tail)) | |
1537 | break; | |
1538 | ASET (spec, FONT_FAMILY_INDEX, XCAR (tail)); | |
1539 | tail = XCDR (tail); | |
1540 | } | |
1541 | } | |
1542 | ASET (spec, FONT_TYPE_INDEX, ftype); | |
1543 | ASET (spec, FONT_FAMILY_INDEX, family); | |
1544 | return (i > 0 ? Fvconcat (i, vec) : null_vector); | |
1545 | } | |
1546 | ||
1547 | static int num_fonts; | |
1548 | ||
1549 | static Lisp_Object | |
1550 | font_open_entity (f, entity, pixel_size) | |
1551 | FRAME_PTR f; | |
1552 | Lisp_Object entity; | |
1553 | int pixel_size; | |
1554 | { | |
1555 | struct font_driver_list *driver_list; | |
1556 | Lisp_Object objlist, size, val; | |
1557 | struct font *font; | |
1558 | ||
1559 | size = AREF (entity, FONT_SIZE_INDEX); | |
1560 | xassert (NATNUMP (size)); | |
1561 | if (XINT (size) != 0) | |
1562 | pixel_size = XINT (size); | |
1563 | ||
1564 | for (objlist = AREF (entity, FONT_OBJLIST_INDEX); CONSP (objlist); | |
1565 | objlist = XCDR (objlist)) | |
1566 | { | |
1567 | font = XSAVE_VALUE (XCAR (objlist))->pointer; | |
1568 | if (font->pixel_size == pixel_size) | |
1569 | { | |
1570 | XSAVE_VALUE (XCAR (objlist))->integer++; | |
1571 | return XCAR (objlist); | |
1572 | } | |
1573 | } | |
1574 | ||
1575 | xassert (FONT_ENTITY_P (entity)); | |
1576 | val = AREF (entity, FONT_TYPE_INDEX); | |
1577 | for (driver_list = f->font_driver_list; | |
1578 | driver_list && ! EQ (driver_list->driver->type, val); | |
1579 | driver_list = driver_list->next); | |
1580 | if (! driver_list) | |
1581 | return Qnil; | |
1582 | ||
1583 | font = driver_list->driver->open (f, entity, pixel_size); | |
1584 | if (! font) | |
1585 | return Qnil; | |
1586 | val = make_save_value (font, 1); | |
1587 | ASET (entity, FONT_OBJLIST_INDEX, | |
1588 | Fcons (val, AREF (entity, FONT_OBJLIST_INDEX))); | |
1589 | num_fonts++; | |
1590 | return val; | |
1591 | } | |
1592 | ||
1593 | void | |
1594 | font_close_object (f, font_object) | |
1595 | FRAME_PTR f; | |
1596 | Lisp_Object font_object; | |
1597 | { | |
1598 | struct font *font; | |
1599 | Lisp_Object objlist = AREF (font->entity, FONT_OBJLIST_INDEX); | |
1600 | Lisp_Object tail, prev = Qnil; | |
1601 | ||
1602 | for (prev = Qnil, tail = objlist; CONSP (tail); | |
1603 | prev = tail, tail = XCDR (tail)) | |
1604 | if (EQ (font_object, XCAR (tail))) | |
1605 | { | |
1606 | struct Lisp_Save_Value *p = XSAVE_VALUE (font_object); | |
1607 | ||
1608 | xassert (p->integer > 0); | |
1609 | p->integer--; | |
1610 | if (p->integer == 0) | |
1611 | { | |
1612 | if (font->driver->close) | |
1613 | font->driver->close (f, p->pointer); | |
1614 | p->pointer = NULL; | |
1615 | if (NILP (prev)) | |
1616 | ASET (font->entity, FONT_OBJLIST_INDEX, XCDR (objlist)); | |
1617 | else | |
1618 | XSETCDR (prev, XCDR (objlist)); | |
1619 | } | |
1620 | break; | |
1621 | } | |
1622 | } | |
1623 | ||
1624 | int | |
1625 | font_has_char (f, font_entity, c) | |
1626 | FRAME_PTR f; | |
1627 | Lisp_Object font_entity; | |
1628 | int c; | |
1629 | { | |
1630 | Lisp_Object type = AREF (font_entity, FONT_TYPE_INDEX); | |
1631 | struct font_driver_list *driver_list; | |
1632 | ||
1633 | for (driver_list = f->font_driver_list; | |
1634 | driver_list && ! EQ (driver_list->driver->type, type); | |
1635 | driver_list = driver_list->next); | |
1636 | if (! driver_list) | |
1637 | return -1; | |
1638 | return driver_list->driver->has_char (font_entity, c); | |
1639 | } | |
1640 | ||
1641 | unsigned | |
1642 | font_encode_char (font_object, c) | |
1643 | Lisp_Object font_object; | |
1644 | int c; | |
1645 | { | |
1646 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
1647 | ||
1648 | return font->driver->encode_char (font, c); | |
1649 | } | |
1650 | ||
1651 | char * | |
1652 | font_get_name (font_object) | |
1653 | Lisp_Object font_object; | |
1654 | { | |
1655 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
1656 | ||
1657 | return (font->font.full_name ? font->font.full_name | |
1658 | : font->file_name ? font->file_name | |
1659 | : ""); | |
1660 | } | |
1661 | ||
1662 | Lisp_Object | |
1663 | font_get_frame (font) | |
1664 | Lisp_Object font; | |
1665 | { | |
1666 | if (FONT_OBJECT_P (font)) | |
1667 | font = ((struct font *) XSAVE_VALUE (font)->pointer)->entity; | |
1668 | xassert (FONT_ENTITY_P (font)); | |
1669 | return AREF (font, FONT_FRAME_INDEX); | |
1670 | } | |
1671 | ||
1672 | extern Lisp_Object Qunspecified, Qignore_defface; | |
1673 | ||
1674 | Lisp_Object | |
1675 | font_find_for_lface (f, lface, spec) | |
1676 | FRAME_PTR f; | |
1677 | Lisp_Object *lface; | |
1678 | Lisp_Object spec; | |
1679 | { | |
1680 | Lisp_Object attrs[LFACE_SLANT_INDEX + 1]; | |
1681 | Lisp_Object frame, val, entities; | |
1682 | int i; | |
1683 | unsigned char try_unspecified[FONT_SPEC_MAX]; | |
1684 | ||
1685 | for (i = 0; i <= LFACE_SLANT_INDEX; i++) | |
1686 | { | |
1687 | val = lface[i]; | |
1688 | if (EQ (val, Qunspecified) || EQ (val, Qignore_defface)) | |
1689 | val = Qnil; | |
1690 | attrs[i] = val; | |
1691 | } | |
1692 | if (NILP (spec)) | |
1693 | for (i = 0; i < FONT_SPEC_MAX; i++) | |
1694 | ASET (scratch_font_spec, i, Qnil); | |
1695 | else | |
1696 | for (i = 0; i < FONT_SPEC_MAX; i++) | |
1697 | ASET (scratch_font_spec, i, AREF (spec, i)); | |
1698 | ||
1699 | /* If SPEC doesn't specify a specific property, it can be tried with | |
1700 | nil even if FACE specifies it. */ | |
1701 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_SIZE_INDEX; i++) | |
1702 | try_unspecified[i] = NILP (AREF (scratch_font_spec, i)); | |
1703 | ||
1704 | if (STRINGP (attrs[LFACE_FONT_INDEX])) | |
1705 | font_merge_old_spec (attrs[LFACE_FONT_INDEX], Qnil, Qnil, | |
1706 | scratch_font_spec); | |
1707 | if (NILP (AREF (scratch_font_spec, FONT_FAMILY_INDEX)) | |
1708 | && ! NILP (attrs[LFACE_FAMILY_INDEX])) | |
1709 | font_merge_old_spec (Qnil, attrs[LFACE_FAMILY_INDEX], Qnil, | |
1710 | scratch_font_spec); | |
1711 | if (NILP (AREF (scratch_font_spec, FONT_REGISTRY_INDEX))) | |
1712 | { | |
1713 | ASET (scratch_font_spec, FONT_REGISTRY_INDEX, intern ("iso8859-1")); | |
1714 | try_unspecified[FONT_REGISTRY_INDEX] = 0; | |
1715 | } | |
1716 | ||
1717 | for (i = FONT_FAMILY_INDEX; i <= FONT_SIZE_INDEX; i++) | |
1718 | if (try_unspecified[i] | |
1719 | && NILP (AREF (scratch_font_spec, i))) | |
1720 | try_unspecified[i] = 0; | |
1721 | ||
1722 | XSETFRAME (frame, f); | |
1723 | entities = font_list_entities (frame, scratch_font_spec); | |
1724 | while (ASIZE (entities) == 0) | |
1725 | { | |
1726 | if (try_unspecified[FONT_WEIGHT_INDEX] | |
1727 | || try_unspecified[FONT_SLANT_INDEX] | |
1728 | || try_unspecified[FONT_WIDTH_INDEX] | |
1729 | || try_unspecified[FONT_SIZE_INDEX]) | |
1730 | { | |
1731 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) | |
1732 | { | |
1733 | try_unspecified[i] = 0; | |
1734 | ASET (scratch_font_spec, i, Qnil); | |
1735 | } | |
1736 | entities = font_list_entities (frame, scratch_font_spec); | |
1737 | } | |
1738 | else if (try_unspecified[FONT_FOUNDRY_INDEX]) | |
1739 | { | |
1740 | try_unspecified[FONT_FOUNDRY_INDEX] = 0; | |
1741 | ASET (scratch_font_spec, FONT_FOUNDRY_INDEX, Qnil); | |
1742 | entities = font_list_entities (frame, scratch_font_spec); | |
1743 | } | |
1744 | else if (try_unspecified[FONT_FAMILY_INDEX]) | |
1745 | { | |
1746 | try_unspecified[FONT_FAMILY_INDEX] = 0; | |
1747 | ASET (scratch_font_spec, FONT_FAMILY_INDEX, Qnil); | |
1748 | entities = font_list_entities (frame, scratch_font_spec); | |
1749 | } | |
1750 | else | |
1751 | return Qnil; | |
1752 | } | |
1753 | ||
1754 | if (ASIZE (entities) > 1) | |
1755 | { | |
1756 | Lisp_Object prefer = scratch_font_prefer; | |
1757 | ||
1758 | for (i = 0; i < FONT_WEIGHT_INDEX; i++) | |
1759 | ASET (prefer, i, Qnil); | |
1760 | if (! NILP (attrs[LFACE_WEIGHT_INDEX])) | |
1761 | ASET (prefer, FONT_WEIGHT_INDEX, | |
1762 | font_prop_validate_style (FONT_WEIGHT_INDEX, | |
1763 | attrs[LFACE_WEIGHT_INDEX])); | |
1764 | if (! NILP (attrs[LFACE_SLANT_INDEX])) | |
1765 | ASET (prefer, FONT_SLANT_INDEX, | |
1766 | font_prop_validate_style (FONT_SLANT_INDEX, | |
1767 | attrs[LFACE_SLANT_INDEX])); | |
1768 | if (! NILP (attrs[LFACE_SWIDTH_INDEX])) | |
1769 | ASET (prefer, FONT_WIDTH_INDEX, | |
1770 | font_prop_validate_style (FONT_WIDTH_INDEX, | |
1771 | attrs[LFACE_SWIDTH_INDEX])); | |
1772 | if (! NILP (attrs[LFACE_HEIGHT_INDEX])) | |
1773 | { | |
1774 | int size; | |
1775 | ||
1776 | val = attrs[LFACE_HEIGHT_INDEX]; | |
1777 | size = POINT_TO_PIXEL (XINT (val), f->resy); | |
1778 | ASET (prefer, FONT_SIZE_INDEX, make_number (size)); | |
1779 | } | |
1780 | font_sort_entites (entities, prefer, frame, spec); | |
1781 | } | |
1782 | ||
1783 | return AREF (entities, 0); | |
1784 | } | |
1785 | ||
1786 | Lisp_Object | |
1787 | font_open_for_lface (f, lface, entity) | |
1788 | FRAME_PTR f; | |
1789 | Lisp_Object *lface; | |
1790 | Lisp_Object entity; | |
1791 | { | |
1792 | int pt = XINT (lface[LFACE_HEIGHT_INDEX]); | |
1793 | int size = POINT_TO_PIXEL (pt, f->resy); | |
1794 | ||
1795 | return font_open_entity (f, entity, size); | |
1796 | } | |
1797 | ||
1798 | void | |
1799 | font_load_for_face (f, face) | |
1800 | FRAME_PTR f; | |
1801 | struct face *face; | |
1802 | { | |
1803 | Lisp_Object entity; | |
1804 | ||
1805 | face->font_info_id = -1; | |
1806 | face->font_info = NULL; | |
1807 | face->font = NULL; | |
1808 | face->font_name = NULL; | |
1809 | ||
1810 | entity = font_find_for_lface (f, face->lface, Qnil); | |
1811 | if (! NILP (entity)) | |
1812 | { | |
1813 | Lisp_Object font_object = font_open_for_lface (f, face->lface, entity); | |
1814 | ||
1815 | if (! NILP (font_object)) | |
1816 | { | |
1817 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
1818 | ||
1819 | face->font = font->font.font; | |
1820 | face->font_info = (struct font_info *) font; | |
1821 | face->font_info_id = 0; | |
1822 | face->font_name = font->font.full_name; | |
1823 | } | |
1824 | } | |
1825 | if (! face->font) | |
1826 | add_to_log ("Unable to load font for a face%s", null_string, Qnil); | |
1827 | } | |
1828 | ||
1829 | void | |
1830 | font_prepare_for_face (f, face) | |
1831 | FRAME_PTR f; | |
1832 | struct face *face; | |
1833 | { | |
1834 | struct font *font = (struct font *) face->font_info; | |
1835 | ||
1836 | if (font->driver->prepare_face) | |
1837 | font->driver->prepare_face (f, face); | |
1838 | } | |
1839 | ||
1840 | void | |
1841 | font_done_for_face (f, face) | |
1842 | FRAME_PTR f; | |
1843 | struct face *face; | |
1844 | { | |
1845 | struct font *font = (struct font *) face->font_info; | |
1846 | ||
1847 | if (font->driver->done_face) | |
1848 | font->driver->done_face (f, face); | |
1849 | face->extra = NULL; | |
1850 | } | |
1851 | ||
1852 | Lisp_Object | |
1853 | font_open_by_name (f, name) | |
1854 | FRAME_PTR f; | |
1855 | char *name; | |
1856 | { | |
1857 | Lisp_Object spec = Ffont_spec (0, NULL); | |
1858 | Lisp_Object entities = Qnil; | |
1859 | Lisp_Object frame; | |
1860 | int pixel_size; | |
1861 | ||
1862 | XSETFRAME (frame, f); | |
1863 | ||
1864 | ASET (spec, FONT_EXTRA_INDEX, | |
1865 | Fcons (Fcons (QCname, make_unibyte_string (name, strlen (name))), | |
1866 | Qnil)); | |
1867 | entities = font_list_entities (frame, spec); | |
1868 | if (ASIZE (entities) == 0) | |
1869 | return Qnil; | |
1870 | pixel_size = XINT (AREF (AREF (entities, 0), FONT_SIZE_INDEX)); | |
1871 | if (pixel_size == 0) | |
1872 | pixel_size = 12; | |
1873 | return font_open_entity (f, AREF (entities, 0), pixel_size); | |
1874 | } | |
1875 | ||
1876 | ||
1877 | /* Register font-driver DRIVER. This function is used in two ways. | |
1878 | ||
1879 | The first is with frame F non-NULL. In this case, DRIVER is | |
1880 | registered to be used for drawing characters on F. All frame | |
1881 | creaters (e.g. Fx_create_frame) must call this function at least | |
1882 | once with an available font-driver. | |
1883 | ||
1884 | The second is with frame F NULL. In this case, DRIVER is globally | |
1885 | registered in the variable `font_driver_list'. All font-driver | |
1886 | implementations must call this function in its syms_of_XXXX | |
1887 | (e.g. syms_of_xfont). */ | |
1888 | ||
1889 | void | |
1890 | register_font_driver (driver, f) | |
1891 | struct font_driver *driver; | |
1892 | FRAME_PTR f; | |
1893 | { | |
1894 | struct font_driver_list *root = f ? f->font_driver_list : font_driver_list; | |
1895 | struct font_driver_list *prev, *list; | |
1896 | ||
1897 | if (f && ! driver->draw) | |
1898 | error ("Unsable font driver for a frame: %s", | |
1899 | SDATA (SYMBOL_NAME (driver->type))); | |
1900 | ||
1901 | for (prev = NULL, list = root; list; prev = list, list = list->next) | |
1902 | if (list->driver->type == driver->type) | |
1903 | error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver->type))); | |
1904 | ||
1905 | list = malloc (sizeof (struct font_driver_list)); | |
1906 | list->driver = driver; | |
1907 | list->next = NULL; | |
1908 | if (prev) | |
1909 | prev->next = list; | |
1910 | else if (f) | |
1911 | f->font_driver_list = list; | |
1912 | else | |
1913 | font_driver_list = list; | |
1914 | num_font_drivers++; | |
1915 | } | |
1916 | ||
1917 | /* Free font-driver list on frame F. It doesn't free font-drivers | |
1918 | themselves. */ | |
1919 | ||
1920 | void | |
1921 | free_font_driver_list (f) | |
1922 | FRAME_PTR f; | |
1923 | { | |
1924 | while (f->font_driver_list) | |
1925 | { | |
1926 | struct font_driver_list *next = f->font_driver_list->next; | |
1927 | ||
1928 | free (f->font_driver_list); | |
1929 | f->font_driver_list = next; | |
1930 | } | |
1931 | } | |
1932 | ||
1933 | \f | |
1934 | /* Lisp API */ | |
1935 | ||
1936 | DEFUN ("fontp", Ffontp, Sfontp, 1, 1, 0, | |
1937 | doc: /* Return t if object is a font-spec or font-entity. */) | |
1938 | (object) | |
1939 | Lisp_Object object; | |
1940 | { | |
1941 | return (FONTP (object) ? Qt : Qnil); | |
1942 | } | |
1943 | ||
1944 | DEFUN ("font-spec", Ffont_spec, Sfont_spec, 0, MANY, 0, | |
1945 | doc: /* Return a newly created font-spec with specified arguments as properties. | |
1946 | usage: (font-spec &rest properties) */) | |
1947 | (nargs, args) | |
1948 | int nargs; | |
1949 | Lisp_Object *args; | |
1950 | { | |
1951 | Lisp_Object spec = Fmake_vector (make_number (FONT_SPEC_MAX), Qnil); | |
1952 | Lisp_Object extra = Qnil; | |
1953 | int i; | |
1954 | ||
1955 | for (i = 0; i < nargs; i += 2) | |
1956 | { | |
1957 | enum font_property_index prop; | |
1958 | Lisp_Object key = args[i], val = args[i + 1]; | |
1959 | ||
1960 | prop = check_font_prop_name (key); | |
1961 | if (prop < FONT_EXTRA_INDEX) | |
1962 | ASET (spec, prop, (font_property_table[prop].validater) (prop, val)); | |
1963 | else | |
1964 | extra = Fcons (Fcons (key, val), extra); | |
1965 | } | |
1966 | ASET (spec, FONT_EXTRA_INDEX, extra); | |
1967 | return spec; | |
1968 | } | |
1969 | ||
1970 | ||
1971 | DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0, | |
1972 | doc: /* Return the value of FONT's PROP property. | |
1973 | FONT may be a font-spec or font-entity. | |
1974 | If FONT is font-entity and PROP is :extra, always nil is returned. */) | |
1975 | (font, prop) | |
1976 | Lisp_Object font, prop; | |
1977 | { | |
1978 | enum font_property_index idx; | |
1979 | ||
1980 | CHECK_FONT (font); | |
1981 | idx = check_font_prop_name (prop); | |
1982 | if (idx < FONT_EXTRA_INDEX) | |
1983 | return AREF (font, idx); | |
1984 | if (FONT_ENTITY_P (font)) | |
1985 | return Qnil; | |
1986 | return Fcdr (Fassoc (AREF (font, FONT_EXTRA_INDEX), prop)); | |
1987 | } | |
1988 | ||
1989 | ||
1990 | DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0, | |
1991 | doc: /* Set one property of FONT-SPEC: give property PROP value VALUE. */) | |
1992 | (font_spec, prop, val) | |
1993 | Lisp_Object font_spec, prop, val; | |
1994 | { | |
1995 | enum font_property_index idx; | |
1996 | Lisp_Object extra, slot; | |
1997 | ||
1998 | CHECK_FONT_SPEC (font_spec); | |
1999 | idx = check_font_prop_name (prop); | |
2000 | if (idx < FONT_EXTRA_INDEX) | |
2001 | return ASET (font_spec, idx, val); | |
2002 | extra = AREF (font_spec, FONT_EXTRA_INDEX); | |
2003 | slot = Fassoc (extra, prop); | |
2004 | if (NILP (slot)) | |
2005 | extra = Fcons (Fcons (prop, val), extra); | |
2006 | else | |
2007 | Fsetcdr (slot, val); | |
2008 | return val; | |
2009 | } | |
2010 | ||
2011 | DEFUN ("list-fonts", Flist_fonts, Slist_fonts, 1, 4, 0, | |
2012 | doc: /* List available fonts matching FONT-SPEC on the current frame. | |
2013 | Optional 2nd argument FRAME specifies the target frame. | |
2014 | Optional 3rd argument NUM, if non-nil, limits the number of returned fonts. | |
2015 | Optional 4th argument PREFER, if non-nil, is a font-spec to sort fonts | |
2016 | by closeness to PREFER. */) | |
2017 | (font_spec, frame, num, prefer) | |
2018 | Lisp_Object font_spec, frame, num, prefer; | |
2019 | { | |
2020 | Lisp_Object vec, list, tail; | |
2021 | int n = 0, i, len; | |
2022 | ||
2023 | if (NILP (frame)) | |
2024 | frame = selected_frame; | |
2025 | CHECK_LIVE_FRAME (frame); | |
2026 | CHECK_VALIDATE_FONT_SPEC (font_spec); | |
2027 | if (! NILP (num)) | |
2028 | { | |
2029 | CHECK_NUMBER (num); | |
2030 | n = XINT (num); | |
2031 | if (n <= 0) | |
2032 | return Qnil; | |
2033 | } | |
2034 | if (! NILP (prefer)) | |
2035 | CHECK_FONT (prefer); | |
2036 | ||
2037 | vec = font_list_entities (frame, font_spec); | |
2038 | len = ASIZE (vec); | |
2039 | if (len == 0) | |
2040 | return Qnil; | |
2041 | if (len == 1) | |
2042 | return Fcons (AREF (vec, 0), Qnil); | |
2043 | ||
2044 | if (! NILP (prefer)) | |
2045 | vec = font_sort_entites (vec, prefer, frame, font_spec); | |
2046 | ||
2047 | list = tail = Fcons (AREF (vec, 0), Qnil); | |
2048 | if (n == 0 || n > len) | |
2049 | n = len; | |
2050 | for (i = 1; i < n; i++) | |
2051 | { | |
2052 | Lisp_Object val = Fcons (AREF (vec, i), Qnil); | |
2053 | ||
2054 | XSETCDR (tail, val); | |
2055 | tail = val; | |
2056 | } | |
2057 | return list; | |
2058 | } | |
2059 | ||
2060 | DEFUN ("list-families", Flist_families, Slist_families, 0, 1, 0, | |
2061 | doc: /* List available font families on the current frame. | |
2062 | Optional 2nd argument FRAME specifies the target frame. */) | |
2063 | (frame) | |
2064 | Lisp_Object frame; | |
2065 | { | |
2066 | FRAME_PTR f; | |
2067 | struct font_driver_list *driver_list; | |
2068 | Lisp_Object list; | |
2069 | ||
2070 | if (NILP (frame)) | |
2071 | frame = selected_frame; | |
2072 | CHECK_LIVE_FRAME (frame); | |
2073 | f = XFRAME (frame); | |
2074 | list = Qnil; | |
2075 | for (driver_list = f->font_driver_list; driver_list; | |
2076 | driver_list = driver_list->next) | |
2077 | if (driver_list->driver->list_family) | |
2078 | { | |
2079 | Lisp_Object val = driver_list->driver->list_family (frame); | |
2080 | ||
2081 | if (NILP (list)) | |
2082 | list = val; | |
2083 | else | |
2084 | { | |
2085 | Lisp_Object tail = list; | |
2086 | ||
2087 | for (; CONSP (val); val = XCDR (val)) | |
2088 | if (NILP (Fmemq (XCAR (val), tail))) | |
2089 | list = Fcons (XCAR (val), list); | |
2090 | } | |
2091 | } | |
2092 | return list; | |
2093 | } | |
2094 | ||
2095 | DEFUN ("find-font", Ffind_font, Sfind_font, 1, 2, 0, | |
2096 | doc: /* Return a font-entity matching with FONT-SPEC on the current frame. | |
2097 | Optional 2nd argument FRAME, if non-nil, specifies the target frame. */) | |
2098 | (font_spec, frame) | |
2099 | Lisp_Object font_spec, frame; | |
2100 | { | |
2101 | Lisp_Object val = Flist_fonts (font_spec, frame, make_number (1), Qnil); | |
2102 | ||
2103 | if (CONSP (val)) | |
2104 | val = XCAR (val); | |
2105 | return val; | |
2106 | } | |
2107 | ||
2108 | DEFUN ("font-xlfd-name", Ffont_xlfd_name, Sfont_xlfd_name, 1, 1, 0, | |
2109 | doc: /* Return XLFD name of FONT. | |
2110 | FONT is a font-spec, font-entity, or font-object. | |
2111 | If the name is too long for XLFD (maximum 255 chars), return nil. */) | |
2112 | (font) | |
2113 | Lisp_Object font; | |
2114 | { | |
2115 | char name[256]; | |
2116 | int pixel_size = 0; | |
2117 | ||
2118 | if (FONT_SPEC_P (font)) | |
2119 | CHECK_VALIDATE_FONT_SPEC (font); | |
2120 | else if (FONT_ENTITY_P (font)) | |
2121 | CHECK_FONT (font); | |
2122 | else | |
2123 | { | |
2124 | struct font *fontp; | |
2125 | ||
2126 | CHECK_FONT_GET_OBJECT (font, fontp); | |
2127 | font = fontp->entity; | |
2128 | pixel_size = fontp->pixel_size; | |
2129 | } | |
2130 | ||
2131 | if (font_unparse_xlfd (font, pixel_size, name, 256) < 0) | |
2132 | return Qnil; | |
2133 | return build_string (name); | |
2134 | } | |
2135 | ||
2136 | DEFUN ("clear-font-cache", Fclear_font_cache, Sclear_font_cache, 0, 0, 0, | |
2137 | doc: /* Clear font cache. */) | |
2138 | () | |
2139 | { | |
2140 | Lisp_Object list, frame; | |
2141 | ||
2142 | FOR_EACH_FRAME (list, frame) | |
2143 | { | |
2144 | FRAME_PTR f = XFRAME (frame); | |
2145 | struct font_driver_list *driver_list = f->font_driver_list; | |
2146 | ||
2147 | for (; driver_list; driver_list = driver_list->next) | |
2148 | { | |
2149 | Lisp_Object cache = driver_list->driver->get_cache (frame); | |
2150 | Lisp_Object tail, elt; | |
2151 | ||
2152 | for (tail = XCDR (cache); CONSP (tail); tail = XCDR (tail)) | |
2153 | { | |
2154 | elt = XCAR (tail); | |
2155 | if (CONSP (elt) && FONT_SPEC_P (XCAR (elt))) | |
2156 | { | |
2157 | Lisp_Object vec = XCDR (elt); | |
2158 | int i; | |
2159 | ||
2160 | for (i = 0; i < ASIZE (vec); i++) | |
2161 | { | |
2162 | Lisp_Object entity = AREF (vec, i); | |
2163 | Lisp_Object objlist = AREF (entity, FONT_OBJLIST_INDEX); | |
2164 | ||
2165 | for (; CONSP (objlist); objlist = XCDR (objlist)) | |
2166 | { | |
2167 | Lisp_Object val = XCAR (objlist); | |
2168 | struct Lisp_Save_Value *p = XSAVE_VALUE (val); | |
2169 | struct font *font = p->pointer; | |
2170 | ||
2171 | xassert (font | |
2172 | && driver_list->driver == font->driver); | |
2173 | driver_list->driver->close (f, font); | |
2174 | p->pointer = NULL; | |
2175 | p->integer = 0; | |
2176 | } | |
2177 | if (driver_list->driver->free_entity) | |
2178 | driver_list->driver->free_entity (entity); | |
2179 | } | |
2180 | } | |
2181 | } | |
2182 | XSETCDR (cache, Qnil); | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | return Qnil; | |
2187 | } | |
2188 | ||
2189 | DEFUN ("internal-set-font-style-table", Finternal_set_font_style_table, | |
2190 | Sinternal_set_font_style_table, 2, 2, 0, | |
2191 | doc: /* Set font style table for PROP to TABLE. | |
2192 | PROP must be `:weight', `:slant', or `:width'. | |
2193 | TABLE must be an alist of symbols vs the corresponding numeric values | |
2194 | sorted by numeric values. */) | |
2195 | (prop, table) | |
2196 | Lisp_Object prop, table; | |
2197 | { | |
2198 | int table_index; | |
2199 | int numeric; | |
2200 | Lisp_Object tail, val; | |
2201 | ||
2202 | CHECK_SYMBOL (prop); | |
2203 | table_index = (EQ (prop, QCweight) ? 0 | |
2204 | : EQ (prop, QCslant) ? 1 | |
2205 | : EQ (prop, QCwidth) ? 2 | |
2206 | : 3); | |
2207 | if (table_index >= ASIZE (font_style_table)) | |
2208 | error ("Invalid font style property: %s", SDATA (SYMBOL_NAME (prop))); | |
2209 | table = Fcopy_sequence (table); | |
2210 | numeric = -1; | |
2211 | for (tail = table; ! NILP (tail); tail = Fcdr (tail)) | |
2212 | { | |
2213 | prop = Fcar (Fcar (tail)); | |
2214 | val = Fcdr (Fcar (tail)); | |
2215 | CHECK_SYMBOL (prop); | |
2216 | CHECK_NATNUM (val); | |
2217 | if (numeric > XINT (val)) | |
2218 | error ("Numeric values not sorted for %s", SDATA (SYMBOL_NAME (prop))); | |
2219 | numeric = XINT (val); | |
2220 | XSETCAR (tail, Fcons (prop, val)); | |
2221 | } | |
2222 | ASET (font_style_table, table_index, table); | |
2223 | return Qnil; | |
2224 | } | |
2225 | ||
2226 | DEFUN ("font-make-gstring", Ffont_make_gstring, Sfont_make_gstring, 2, 2, 0, | |
2227 | doc: /* Return a newly created glyph-string for FONT-OBJECT with NUM glyphs. | |
2228 | FONT-OBJECT may be nil if it is not yet known. */) | |
2229 | (font_object, num) | |
2230 | Lisp_Object font_object, num; | |
2231 | { | |
2232 | Lisp_Object gstring, g; | |
2233 | int len; | |
2234 | int i; | |
2235 | ||
2236 | if (! NILP (font_object)) | |
2237 | CHECK_FONT_OBJECT (font_object); | |
2238 | CHECK_NATNUM (num); | |
2239 | ||
2240 | len = XINT (num) + 1; | |
2241 | gstring = Fmake_vector (make_number (len), Qnil); | |
2242 | g = Fmake_vector (make_number (6), Qnil); | |
2243 | ASET (g, 0, font_object); | |
2244 | ASET (gstring, 0, g); | |
2245 | for (i = 1; i < len; i++) | |
2246 | ASET (gstring, i, Fmake_vector (make_number (8), make_number (0))); | |
2247 | return gstring; | |
2248 | } | |
2249 | ||
2250 | DEFUN ("font-fill-gstring", Ffont_fill_gstring, Sfont_fill_gstring, 4, 5, 0, | |
2251 | doc: /* Fillin glyph-string GSTRING by characters for FONT-OBJECT. | |
2252 | START and END specifies the region to extract characters. | |
2253 | If optional 3rd argument OBJECT is non-nil, it is a buffer or a string from | |
2254 | where to extract characters. | |
2255 | FONT-OBJECT may be nil if GSTRING already already contains one. */) | |
2256 | (gstring, font_object, start, end, object) | |
2257 | Lisp_Object gstring, font_object, start, end, object; | |
2258 | { | |
2259 | int len, i, c; | |
2260 | unsigned code; | |
2261 | struct font *font; | |
2262 | ||
2263 | CHECK_VECTOR (gstring); | |
2264 | if (NILP (font_object)) | |
2265 | font_object = Faref (Faref (gstring, make_number (0)), make_number (0)); | |
2266 | CHECK_FONT_GET_OBJECT (font_object, font); | |
2267 | ||
2268 | if (STRINGP (object)) | |
2269 | { | |
2270 | const unsigned char *p; | |
2271 | ||
2272 | CHECK_NATNUM (start); | |
2273 | CHECK_NATNUM (end); | |
2274 | if (XINT (start) > XINT (end) | |
2275 | || XINT (end) > ASIZE (object) | |
2276 | || XINT (end) - XINT (start) >= XINT (Flength (gstring))) | |
2277 | args_out_of_range (start, end); | |
2278 | ||
2279 | len = XINT (end) - XINT (start); | |
2280 | p = SDATA (object) + string_char_to_byte (object, XINT (start)); | |
2281 | for (i = 0; i < len; i++) | |
2282 | { | |
2283 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
2284 | ||
2285 | c = STRING_CHAR_ADVANCE (p); | |
2286 | code = font->driver->encode_char (font, c); | |
2287 | if (code > MOST_POSITIVE_FIXNUM) | |
2288 | error ("Glyph code 0x%X is too large", code); | |
2289 | ASET (g, 0, make_number (i)); | |
2290 | ASET (g, 1, make_number (i + 1)); | |
2291 | LGLYPH_SET_CHAR (g, make_number (c)); | |
2292 | LGLYPH_SET_CODE (g, make_number (code)); | |
2293 | } | |
2294 | } | |
2295 | else | |
2296 | { | |
2297 | int pos, pos_byte; | |
2298 | ||
2299 | if (! NILP (object)) | |
2300 | Fset_buffer (object); | |
2301 | validate_region (&start, &end); | |
2302 | if (XINT (end) - XINT (start) > len) | |
2303 | args_out_of_range (start, end); | |
2304 | len = XINT (end) - XINT (start); | |
2305 | pos = XINT (start); | |
2306 | pos_byte = CHAR_TO_BYTE (pos); | |
2307 | for (i = 0; i < len; i++) | |
2308 | { | |
2309 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
2310 | ||
2311 | FETCH_CHAR_ADVANCE (c, pos, pos_byte); | |
2312 | code = font->driver->encode_char (font, c); | |
2313 | if (code > MOST_POSITIVE_FIXNUM) | |
2314 | error ("Glyph code 0x%X is too large", code); | |
2315 | ASET (g, 0, make_number (i)); | |
2316 | ASET (g, 1, make_number (i + 1)); | |
2317 | LGLYPH_SET_CHAR (g, make_number (c)); | |
2318 | LGLYPH_SET_CODE (g, make_number (code)); | |
2319 | } | |
2320 | } | |
2321 | return Qnil; | |
2322 | } | |
2323 | ||
2324 | ||
2325 | #ifdef FONT_DEBUG | |
2326 | ||
2327 | DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0, | |
2328 | doc: /* Open FONT-ENTITY. */) | |
2329 | (font_entity, size, frame) | |
2330 | Lisp_Object font_entity; | |
2331 | Lisp_Object size; | |
2332 | Lisp_Object frame; | |
2333 | { | |
2334 | int isize; | |
2335 | ||
2336 | CHECK_FONT_ENTITY (font_entity); | |
2337 | if (NILP (size)) | |
2338 | size = AREF (font_entity, FONT_SIZE_INDEX); | |
2339 | CHECK_NUMBER (size); | |
2340 | if (NILP (frame)) | |
2341 | frame = selected_frame; | |
2342 | CHECK_LIVE_FRAME (frame); | |
2343 | ||
2344 | isize = XINT (size); | |
2345 | if (isize < 0) | |
2346 | isize = POINT_TO_PIXEL (- isize, XFRAME (frame)->resy); | |
2347 | ||
2348 | return font_open_entity (XFRAME (frame), font_entity, isize); | |
2349 | } | |
2350 | ||
2351 | DEFUN ("close-font", Fclose_font, Sclose_font, 1, 2, 0, | |
2352 | doc: /* Close FONT-OBJECT. */) | |
2353 | (font_object, frame) | |
2354 | Lisp_Object font_object, frame; | |
2355 | { | |
2356 | CHECK_FONT_OBJECT (font_object); | |
2357 | if (NILP (frame)) | |
2358 | frame = selected_frame; | |
2359 | CHECK_LIVE_FRAME (frame); | |
2360 | font_close_object (XFRAME (frame), font_object); | |
2361 | return Qnil; | |
2362 | } | |
2363 | ||
2364 | DEFUN ("query-font", Fquery_font, Squery_font, 1, 1, 0, | |
2365 | doc: /* Return information about FONT-OBJECT. */) | |
2366 | (font_object) | |
2367 | Lisp_Object font_object; | |
2368 | { | |
2369 | struct font *font; | |
2370 | Lisp_Object val; | |
2371 | ||
2372 | CHECK_FONT_GET_OBJECT (font_object, font); | |
2373 | ||
2374 | val = Fmake_vector (make_number (9), Qnil); | |
2375 | ASET (val, 0, Ffont_xlfd_name (font_object)); | |
2376 | if (font->file_name) | |
2377 | ASET (val, 1, make_unibyte_string (font->file_name, | |
2378 | strlen (font->file_name))); | |
2379 | ASET (val, 2, make_number (font->pixel_size)); | |
2380 | ASET (val, 3, make_number (font->font.size)); | |
2381 | ASET (val, 4, make_number (font->ascent)); | |
2382 | ASET (val, 5, make_number (font->descent)); | |
2383 | ASET (val, 6, make_number (font->font.space_width)); | |
2384 | ASET (val, 7, make_number (font->font.average_width)); | |
2385 | if (font->driver->otf_capability) | |
2386 | ASET (val, 8, font->driver->otf_capability (font)); | |
2387 | return val; | |
2388 | } | |
2389 | ||
2390 | DEFUN ("get-font-glyphs", Fget_font_glyphs, Sget_font_glyphs, 2, 2, 0, | |
2391 | doc: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING. | |
2392 | Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */) | |
2393 | (font_object, string) | |
2394 | Lisp_Object font_object, string; | |
2395 | { | |
2396 | struct font *font; | |
2397 | int i, len; | |
2398 | Lisp_Object vec; | |
2399 | ||
2400 | CHECK_FONT_GET_OBJECT (font_object, font); | |
2401 | CHECK_STRING (string); | |
2402 | len = SCHARS (string); | |
2403 | vec = Fmake_vector (make_number (len), Qnil); | |
2404 | for (i = 0; i < len; i++) | |
2405 | { | |
2406 | Lisp_Object ch = Faref (string, make_number (i)); | |
2407 | Lisp_Object val; | |
2408 | int c = XINT (ch); | |
2409 | unsigned code; | |
2410 | struct font_metrics metrics; | |
2411 | ||
2412 | code = font->driver->encode_char (font, c); | |
2413 | if (code == FONT_INVALID_CODE) | |
2414 | continue; | |
2415 | val = Fmake_vector (make_number (6), Qnil); | |
2416 | if (code <= MOST_POSITIVE_FIXNUM) | |
2417 | ASET (val, 0, make_number (code)); | |
2418 | else | |
2419 | ASET (val, 0, Fcons (make_number (code >> 16), | |
2420 | make_number (code & 0xFFFF))); | |
2421 | font->driver->text_extents (font, &code, 1, &metrics); | |
2422 | ASET (val, 1, make_number (metrics.lbearing)); | |
2423 | ASET (val, 2, make_number (metrics.rbearing)); | |
2424 | ASET (val, 3, make_number (metrics.width)); | |
2425 | ASET (val, 4, make_number (metrics.ascent)); | |
2426 | ASET (val, 5, make_number (metrics.descent)); | |
2427 | ASET (vec, i, val); | |
2428 | } | |
2429 | return vec; | |
2430 | } | |
2431 | ||
2432 | #if 0 | |
2433 | DEFUN ("draw-string", Fdraw_string, Sdraw_string, 2, 2, 0, | |
2434 | doc: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame. | |
2435 | The value is a number of glyphs drawn. | |
2436 | Type C-l to recover what previously shown. */) | |
2437 | (font_object, string) | |
2438 | Lisp_Object font_object, string; | |
2439 | { | |
2440 | Lisp_Object frame = selected_frame; | |
2441 | FRAME_PTR f = XFRAME (frame); | |
2442 | struct font *font; | |
2443 | struct face *face; | |
2444 | int i, len, width; | |
2445 | unsigned *code; | |
2446 | ||
2447 | CHECK_FONT_GET_OBJECT (font_object, font); | |
2448 | CHECK_STRING (string); | |
2449 | len = SCHARS (string); | |
2450 | code = alloca (sizeof (unsigned) * len); | |
2451 | for (i = 0; i < len; i++) | |
2452 | { | |
2453 | Lisp_Object ch = Faref (string, make_number (i)); | |
2454 | Lisp_Object val; | |
2455 | int c = XINT (ch); | |
2456 | ||
2457 | code[i] = font->driver->encode_char (font, c); | |
2458 | if (code[i] == FONT_INVALID_CODE) | |
2459 | break; | |
2460 | } | |
2461 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
2462 | face->fontp = font; | |
2463 | if (font->driver->prepare_face) | |
2464 | font->driver->prepare_face (f, face); | |
2465 | width = font->driver->text_extents (font, code, i, NULL); | |
2466 | len = font->driver->draw_text (f, face, 0, font->ascent, code, i, width); | |
2467 | if (font->driver->done_face) | |
2468 | font->driver->done_face (f, face); | |
2469 | face->fontp = NULL; | |
2470 | return make_number (len); | |
2471 | } | |
2472 | #endif | |
2473 | ||
2474 | #endif /* FONT_DEBUG */ | |
2475 | ||
2476 | \f | |
2477 | extern void syms_of_ftfont P_ (()); | |
2478 | extern void syms_of_xfont P_ (()); | |
2479 | extern void syms_of_xftfont P_ (()); | |
2480 | extern void syms_of_ftxfont P_ (()); | |
2481 | extern void syms_of_bdffont P_ (()); | |
2482 | extern void syms_of_w32font P_ (()); | |
2483 | extern void syms_of_atmfont P_ (()); | |
2484 | ||
2485 | void | |
2486 | syms_of_font () | |
2487 | { | |
2488 | sort_shift_bits[FONT_SLANT_INDEX] = 0; | |
2489 | sort_shift_bits[FONT_WEIGHT_INDEX] = 7; | |
2490 | sort_shift_bits[FONT_SIZE_INDEX] = 14; | |
2491 | sort_shift_bits[FONT_WIDTH_INDEX] = 21; | |
2492 | sort_shift_bits[FONT_ADSTYLE_INDEX] = 28; | |
2493 | sort_shift_bits[FONT_FOUNDRY_INDEX] = 29; | |
2494 | sort_shift_bits[FONT_FAMILY_INDEX] = 30; | |
2495 | sort_shift_bits[FONT_REGISTRY_INDEX] = 31; | |
2496 | /* Note that sort_shift_bits[FONT_SLANT_TYPE] is never used. */ | |
2497 | ||
2498 | staticpro (&font_style_table); | |
2499 | font_style_table = Fmake_vector (make_number (3), Qnil); | |
2500 | ||
2501 | staticpro (&font_family_alist); | |
2502 | font_family_alist = Qnil; | |
2503 | ||
2504 | DEFSYM (Qfontp, "fontp"); | |
2505 | ||
2506 | DEFSYM (QCotf, ":otf"); | |
2507 | DEFSYM (QClanguage, ":language"); | |
2508 | DEFSYM (QCscript, ":script"); | |
2509 | ||
2510 | DEFSYM (QCfoundry, ":foundry"); | |
2511 | DEFSYM (QCadstyle, ":adstyle"); | |
2512 | DEFSYM (QCregistry, ":registry"); | |
2513 | DEFSYM (QCextra, ":extra"); | |
2514 | ||
2515 | staticpro (&null_string); | |
2516 | null_string = build_string (""); | |
2517 | staticpro (&null_vector); | |
2518 | null_vector = Fmake_vector (make_number (0), Qnil); | |
2519 | ||
2520 | staticpro (&scratch_font_spec); | |
2521 | scratch_font_spec = Ffont_spec (0, NULL); | |
2522 | staticpro (&scratch_font_prefer); | |
2523 | scratch_font_prefer = Ffont_spec (0, NULL); | |
2524 | ||
2525 | defsubr (&Sfontp); | |
2526 | defsubr (&Sfont_spec); | |
2527 | defsubr (&Sfont_get); | |
2528 | defsubr (&Sfont_put); | |
2529 | defsubr (&Slist_fonts); | |
2530 | defsubr (&Slist_families); | |
2531 | defsubr (&Sfind_font); | |
2532 | defsubr (&Sfont_xlfd_name); | |
2533 | defsubr (&Sclear_font_cache); | |
2534 | defsubr (&Sinternal_set_font_style_table); | |
2535 | defsubr (&Sfont_make_gstring); | |
2536 | defsubr (&Sfont_fill_gstring); | |
2537 | ||
2538 | #ifdef FONT_DEBUG | |
2539 | defsubr (&Sopen_font); | |
2540 | defsubr (&Sclose_font); | |
2541 | defsubr (&Squery_font); | |
2542 | defsubr (&Sget_font_glyphs); | |
2543 | #if 0 | |
2544 | defsubr (&Sdraw_string); | |
2545 | #endif | |
2546 | #endif /* FONT_DEBUG */ | |
2547 | ||
2548 | #ifdef HAVE_FREETYPE | |
2549 | syms_of_ftfont (); | |
2550 | #ifdef HAVE_X_WINDOWS | |
2551 | syms_of_xfont (); | |
2552 | syms_of_ftxfont (); | |
2553 | #ifdef HAVE_XFT | |
2554 | syms_of_xftfont (); | |
2555 | #endif /* HAVE_XFT */ | |
2556 | #endif /* HAVE_X_WINDOWS */ | |
2557 | #else /* not HAVE_FREETYPE */ | |
2558 | #ifdef HAVE_X_WINDOWS | |
2559 | syms_of_xfont (); | |
2560 | #endif /* HAVE_X_WINDOWS */ | |
2561 | #endif /* not HAVE_FREETYPE */ | |
2562 | #ifdef HAVE_BDFFONT | |
2563 | syms_of_bdffont (); | |
2564 | #endif /* HAVE_BDFFONT */ | |
2565 | #ifdef WINDOWSNT | |
2566 | syms_of_w32font (); | |
2567 | #endif /* WINDOWSNT */ | |
2568 | #ifdef MAC_OS | |
2569 | syms_of_atmfont (); | |
2570 | #endif /* MAC_OS */ | |
2571 | } |