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4ed46869 KH |
1 | /* Fontset handler. |
2 | Ver.1.0 | |
4ed46869 KH |
3 | Copyright (C) 1995 Free Software Foundation, Inc. |
4 | Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. | |
5 | ||
369314dc KH |
6 | This file is part of GNU Emacs. |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
4ed46869 | 12 | |
369314dc KH |
13 | GNU Emacs is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
4ed46869 | 17 | |
369314dc KH |
18 | You should have received a copy of the GNU General Public License |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
4ed46869 KH |
22 | |
23 | #include <config.h> | |
24 | #if HAVE_ALLOCA_H | |
25 | #include <alloca.h> | |
26 | #endif /* HAVE_ALLOCA_H */ | |
27 | #include "lisp.h" | |
28 | #include "charset.h" | |
29 | #include "ccl.h" | |
30 | #include "fontset.h" | |
31 | #include "frame.h" | |
32 | ||
33 | Lisp_Object Vglobal_fontset_alist; | |
4ed46869 | 34 | Lisp_Object Vfont_encoding_alist; |
6a7e6d80 | 35 | Lisp_Object Vuse_default_ascent; |
8c83e4f9 | 36 | Lisp_Object Valternative_fontname_alist; |
ec3bb068 KH |
37 | Lisp_Object Vhighlight_wrong_size_font; |
38 | Lisp_Object Vclip_large_size_font; | |
4ed46869 KH |
39 | |
40 | /* We had better have our own strcasecmp function because some system | |
41 | doesn't have it. */ | |
42 | static char my_strcasetbl[256]; | |
43 | ||
44 | /* Compare two strings S0 and S1 while ignoring differences in case. | |
45 | Return 1 if they differ, else return 0. */ | |
46 | static int | |
47 | my_strcasecmp (s0, s1) | |
48 | unsigned char *s0, *s1; | |
49 | { | |
50 | while (*s0) | |
51 | if (my_strcasetbl[*s0++] != my_strcasetbl[*s1++]) return 1; | |
52 | return (int) *s1; | |
53 | } | |
54 | ||
55 | /* The following six are window system dependent functions. See | |
56 | the comments in src/fontset.h for more detail. */ | |
57 | ||
58 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ | |
59 | struct font_info *(*get_font_info_func) (/* FRAME_PTR f; int font_idx */); | |
60 | ||
61 | /* Return a list of font names which matches PATTERN. See the document of | |
62 | `x-list-fonts' for more detail. */ | |
63 | Lisp_Object (*list_fonts_func) (/* Lisp_Object pattern, face, frame, width */); | |
64 | ||
65 | /* Load a font named NAME for frame F and return a pointer to the | |
66 | information of the loaded font. If loading is failed, return 0. */ | |
67 | struct font_info *(*load_font_func) (/* FRAME_PTR f; char *name */); | |
68 | ||
69 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ | |
70 | struct font_info *(*query_font_func) (/* FRAME_PTR f; char *name */); | |
71 | ||
72 | /* Additional function for setting fontset or changing fontset | |
73 | contents of frame F. */ | |
74 | void (*set_frame_fontset_func) (/* FRAME_PTR f; Lisp_Object arg, oldval */); | |
75 | ||
76 | /* Check if any window system is used now. */ | |
77 | void (*check_window_system_func) (); | |
78 | ||
79 | struct fontset_data * | |
80 | alloc_fontset_data () | |
81 | { | |
82 | struct fontset_data *fontset_data | |
83 | = (struct fontset_data *) xmalloc (sizeof (struct fontset_data)); | |
84 | ||
85 | bzero (fontset_data, sizeof (struct fontset_data)); | |
86 | ||
87 | return fontset_data; | |
88 | } | |
89 | ||
90 | void | |
91 | free_fontset_data (fontset_data) | |
92 | struct fontset_data *fontset_data; | |
93 | { | |
94 | int i; | |
95 | ||
96 | for (i = 0; i < fontset_data->n_fontsets; i++) | |
97 | { | |
98 | int j; | |
99 | ||
100 | xfree (fontset_data->fontset_table[i]->name); | |
467e7675 | 101 | for (j = 0; j <= MAX_CHARSET; j++) |
4ed46869 KH |
102 | if (fontset_data->fontset_table[i]->fontname[j]) |
103 | xfree (fontset_data->fontset_table[i]->fontname[j]); | |
104 | xfree (fontset_data->fontset_table[i]); | |
105 | } | |
106 | xfree (fontset_data->fontset_table); | |
107 | ||
108 | xfree (fontset_data); | |
109 | } | |
110 | ||
111 | /* Load a font named FONTNAME for displaying CHARSET on frame F. | |
112 | All fonts for frame F is stored in a table pointed by FONT_TABLE. | |
113 | Return a pointer to the struct font_info of the loaded font. | |
114 | If loading fails, return 0; | |
115 | If FONTNAME is NULL, the name is taken from the information of FONTSET. | |
116 | If FONTSET is given, try to load a font whose size matches that of | |
117 | FONTSET, and, the font index is stored in the table for FONTSET. */ | |
118 | ||
119 | struct font_info * | |
120 | fs_load_font (f, font_table, charset, fontname, fontset) | |
121 | FRAME_PTR f; | |
122 | struct font_info *font_table; | |
123 | int charset, fontset; | |
124 | char *fontname; | |
125 | { | |
126 | Lisp_Object font_list; | |
127 | Lisp_Object list, elt; | |
128 | int font_idx; | |
129 | int size = 0; | |
130 | struct fontset_info *fontsetp = 0; | |
131 | struct font_info *fontp; | |
132 | ||
133 | if (fontset >= 0 && fontset < FRAME_FONTSET_DATA (f)->n_fontsets) | |
134 | { | |
135 | fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
136 | font_idx = fontsetp->font_indexes[charset]; | |
137 | if (font_idx >= 0) | |
138 | /* We have already loaded a font. */ | |
139 | return font_table + font_idx; | |
140 | else if (font_idx == FONT_NOT_FOUND) | |
141 | /* We have already tried loading a font and failed. */ | |
142 | return 0; | |
143 | if (!fontname) | |
144 | fontname = fontsetp->fontname[charset]; | |
145 | } | |
146 | ||
147 | if (!fontname) | |
148 | /* No way to get fontname. */ | |
149 | return 0; | |
150 | ||
151 | /* If a fontset is specified and we have already loaded some fonts | |
152 | in the fontset, we need a font of appropriate size to be used | |
153 | with the fonts. */ | |
154 | if (fontsetp && fontsetp->size) | |
155 | size = fontsetp->size * CHARSET_WIDTH (charset); | |
156 | ||
157 | fontp = (*load_font_func) (f, fontname, size); | |
158 | ||
159 | if (!fontp) | |
160 | { | |
161 | if (fontsetp) | |
162 | fontsetp->font_indexes[charset] = FONT_NOT_FOUND; | |
163 | return 0; | |
164 | } | |
165 | ||
166 | /* Fill in fields (CHARSET, ENCODING, and FONT_ENCODER) which are | |
167 | not set by (*load_font_func). */ | |
168 | fontp->charset = charset; | |
169 | ||
170 | if (fontp->encoding[1] >= 0) | |
171 | { | |
172 | /* The font itself tells which code points to be used. Use this | |
173 | encoding for all other charsets. */ | |
174 | int i; | |
175 | ||
176 | fontp->encoding[0] = fontp->encoding[1]; | |
467e7675 | 177 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
178 | fontp->encoding[i] = fontp->encoding[1]; |
179 | } | |
180 | else | |
181 | { | |
182 | /* The font itself doesn't tell which code points to be used. */ | |
183 | int i; | |
184 | ||
185 | /* At first, set 1 (means 0xA0..0xFF) as the default. */ | |
186 | fontp->encoding[0] = 1; | |
467e7675 | 187 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
188 | fontp->encoding[i] = 1; |
189 | /* Then override them by a specification in Vfont_encoding_alist. */ | |
190 | for (list = Vfont_encoding_alist; CONSP (list); list = XCONS (list)->cdr) | |
191 | { | |
192 | elt = XCONS (list)->car; | |
193 | if (CONSP (elt) | |
194 | && STRINGP (XCONS (elt)->car) && CONSP (XCONS (elt)->cdr) | |
195 | && (fast_string_match_ignore_case (XCONS (elt)->car, fontname) | |
196 | >= 0)) | |
197 | { | |
198 | Lisp_Object tmp; | |
199 | ||
200 | for (tmp = XCONS (elt)->cdr; CONSP (tmp); tmp = XCONS (tmp)->cdr) | |
201 | if (CONSP (XCONS (tmp)->car) | |
4ed46869 KH |
202 | && ((i = get_charset_id (XCONS (XCONS (tmp)->car)->car)) |
203 | >= 0) | |
204 | && INTEGERP (XCONS (XCONS (tmp)->car)->cdr) | |
205 | && XFASTINT (XCONS (XCONS (tmp)->car)->cdr) < 4) | |
206 | fontp->encoding[i] | |
207 | = XFASTINT (XCONS (XCONS (tmp)->car)->cdr); | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | fontp->font_encoder = (struct ccl_program *) 0; | |
213 | for (list = Vfont_ccl_encoder_alist; CONSP (list); list = XCONS (list)->cdr) | |
214 | { | |
215 | elt = XCONS (list)->car; | |
216 | if (CONSP (elt) | |
217 | && STRINGP (XCONS (elt)->car) && VECTORP (XCONS (elt)->cdr) | |
218 | && fast_string_match_ignore_case (XCONS (elt)->car, fontname) >= 0) | |
219 | { | |
220 | fontp->font_encoder | |
221 | = (struct ccl_program *) xmalloc (sizeof (struct ccl_program)); | |
222 | setup_ccl_program (fontp->font_encoder, XCONS (elt)->cdr); | |
223 | break; | |
224 | } | |
225 | } | |
226 | ||
227 | if (fontsetp) | |
228 | { | |
229 | fontsetp->font_indexes[charset] = fontp->font_idx; | |
230 | if (fontsetp->size == 0) | |
231 | fontsetp->size = fontp->size / CHARSET_WIDTH (charset); | |
232 | ||
233 | if (charset == CHARSET_ASCII | |
234 | && fontsetp->size != fontp->size) | |
235 | { | |
236 | /* When loading ASCII font of the different size from the | |
237 | size of FONTSET, we have to update the size of FONTSET. | |
238 | Since changing the size of FONTSET may make some fonts | |
239 | already loaded inappropriate to be used in FONTSET, we | |
240 | must delete the record of such fonts. In that case, we | |
241 | also have to calculate the height of FONTSET from the | |
242 | remaining fonts. */ | |
243 | int i; | |
244 | ||
245 | fontsetp->size = fontp->size; | |
246 | fontsetp->height = fontp->height; | |
467e7675 | 247 | for (i = CHARSET_ASCII + 1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
248 | { |
249 | font_idx = fontsetp->font_indexes[i]; | |
250 | if (font_idx >= 0) | |
251 | { | |
252 | struct font_info *fontp2 = font_table + font_idx; | |
253 | ||
254 | if (fontp2->size != fontp->size * CHARSET_WIDTH (i)) | |
255 | fontsetp->font_indexes[i] = FONT_NOT_OPENED; | |
6a7e6d80 KH |
256 | /* The following code should be disabled until Emacs |
257 | supports variable height lines. */ | |
258 | #if 0 | |
4ed46869 KH |
259 | else if (fontsetp->height < fontp->height) |
260 | fontsetp->height = fontp->height; | |
6a7e6d80 | 261 | #endif |
4ed46869 KH |
262 | } |
263 | } | |
264 | } | |
265 | else if (fontsetp->height < fontp->height) | |
266 | fontsetp->height = fontp->height; | |
267 | } | |
268 | ||
269 | return fontp; | |
270 | } | |
271 | ||
272 | /* Return ID of the fontset named NAME on frame F. */ | |
273 | ||
274 | int | |
275 | fs_query_fontset (f, name) | |
276 | FRAME_PTR f; | |
277 | char *name; | |
278 | { | |
279 | struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f); | |
280 | int i; | |
281 | ||
282 | for (i = 0; i < fontset_data->n_fontsets; i++) | |
283 | if (!my_strcasecmp(name, fontset_data->fontset_table[i]->name)) | |
284 | return i; | |
285 | return -1; | |
286 | } | |
287 | ||
288 | /* Register a fontset specified by FONTSET_INFO for frame FRAME. | |
289 | Return the fontset ID if successfully registered, else return -1. | |
290 | FONTSET_INFO is a cons of name of the fontset and FONTLIST, where | |
291 | FONTLIST is an alist of charsets vs fontnames. */ | |
292 | ||
293 | int | |
294 | fs_register_fontset (f, fontset_info) | |
295 | FRAME_PTR f; | |
296 | Lisp_Object fontset_info; | |
297 | { | |
298 | struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f); | |
299 | Lisp_Object name, fontlist; | |
300 | int fontset; | |
301 | struct fontset_info *fontsetp; | |
302 | int i; | |
303 | ||
304 | if (!CONSP (fontset_info) | |
305 | || !STRINGP (XCONS (fontset_info)->car) | |
306 | || !CONSP (XCONS (fontset_info)->cdr)) | |
307 | /* Invalid data in FONTSET_INFO. */ | |
308 | return -1; | |
309 | ||
310 | name = XCONS (fontset_info)->car; | |
311 | if ((fontset = fs_query_fontset (f, XSTRING (name)->data)) >= 0) | |
312 | /* This fontset already exists on frame F. */ | |
313 | return fontset; | |
314 | ||
315 | fontsetp = (struct fontset_info *) xmalloc (sizeof (struct fontset_info)); | |
316 | ||
317 | fontsetp->name = (char *) xmalloc (XSTRING (name)->size + 1); | |
318 | bcopy(XSTRING (name)->data, fontsetp->name, XSTRING (name)->size + 1); | |
319 | ||
320 | fontsetp->size = fontsetp->height = 0; | |
321 | ||
467e7675 | 322 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
323 | { |
324 | fontsetp->fontname[i] = (char *) 0; | |
325 | fontsetp->font_indexes[i] = FONT_NOT_OPENED; | |
326 | } | |
327 | ||
328 | for (fontlist = XCONS (fontset_info)->cdr; CONSP (fontlist); | |
329 | fontlist = XCONS (fontlist)->cdr) | |
330 | { | |
331 | Lisp_Object tem = Fcar (fontlist); | |
332 | int charset; | |
333 | ||
334 | if (CONSP (tem) | |
335 | && (charset = get_charset_id (XCONS (tem)->car)) >= 0 | |
336 | && STRINGP (XCONS (tem)->cdr)) | |
337 | { | |
338 | fontsetp->fontname[charset] | |
339 | = (char *) xmalloc (XSTRING (XCONS (tem)->cdr)->size + 1); | |
340 | bcopy (XSTRING (XCONS (tem)->cdr)->data, | |
341 | fontsetp->fontname[charset], | |
342 | XSTRING (XCONS (tem)->cdr)->size + 1); | |
343 | } | |
344 | else | |
345 | /* Broken or invalid data structure. */ | |
346 | return -1; | |
347 | } | |
348 | ||
349 | /* Do we need to create the table? */ | |
350 | if (fontset_data->fontset_table_size == 0) | |
351 | { | |
352 | fontset_data->fontset_table_size = 8; | |
353 | fontset_data->fontset_table | |
354 | = (struct fontset_info **) xmalloc (fontset_data->fontset_table_size | |
355 | * sizeof (struct fontset_info *)); | |
356 | } | |
357 | /* Do we need to grow the table? */ | |
358 | else if (fontset_data->n_fontsets >= fontset_data->fontset_table_size) | |
359 | { | |
360 | fontset_data->fontset_table_size += 8; | |
361 | fontset_data->fontset_table | |
362 | = (struct fontset_info **) xrealloc (fontset_data->fontset_table, | |
363 | fontset_data->fontset_table_size | |
364 | * sizeof (struct fontset_info *)); | |
365 | } | |
366 | fontset = fontset_data->n_fontsets++; | |
367 | fontset_data->fontset_table[fontset] = fontsetp; | |
368 | ||
369 | return fontset; | |
370 | } | |
371 | ||
372 | /* Cache data used by fontset_pattern_regexp. The car part is a | |
373 | pattern string containing at least one wild card, the cdr part is | |
374 | the corresponding regular expression. */ | |
375 | static Lisp_Object Vcached_fontset_data; | |
376 | ||
377 | #define CACHED_FONTSET_NAME (XSTRING (XCONS (Vcached_fontset_data)->car)->data) | |
378 | #define CACHED_FONTSET_REGEX (XCONS (Vcached_fontset_data)->cdr) | |
379 | ||
380 | /* If fontset name PATTERN contains any wild card, return regular | |
381 | expression corresponding to PATTERN. */ | |
382 | ||
383 | Lisp_Object | |
384 | fontset_pattern_regexp (pattern) | |
385 | Lisp_Object pattern; | |
386 | { | |
387 | int nickname = 0; | |
388 | ||
389 | if (!index (XSTRING (pattern)->data, '*') | |
390 | && !index (XSTRING (pattern)->data, '?')) | |
391 | /* PATTERN does not contain any wild cards. */ | |
392 | { | |
393 | if (XSTRING (pattern)->size > 8 | |
394 | && ! bcmp (XSTRING (pattern)->data, "fontset-", 8)) | |
395 | /* Just a nickname of a fontset is specified. */ | |
396 | nickname = 1; | |
397 | else | |
398 | return Qnil; | |
399 | } | |
400 | ||
401 | if (!CONSP (Vcached_fontset_data) | |
402 | || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME)) | |
403 | { | |
404 | /* We must at first update the cached data. */ | |
405 | char *regex = (char *) alloca (XSTRING (pattern)->size * 2 + 3); | |
406 | char *p0, *p1 = regex; | |
407 | ||
408 | if (nickname) | |
409 | { | |
410 | /* Just prepend ".*-" to PATTERN. */ | |
411 | *p1++= '.'; *p1++= '*', *p1++= '-'; | |
412 | bcopy (XSTRING (pattern)->data, p1, XSTRING (pattern)->size); | |
413 | p1 += XSTRING (pattern)->size; | |
414 | } | |
415 | else | |
416 | { | |
417 | /* Convert "*" to ".*", "?" to ".". */ | |
418 | *p1++ = '^'; | |
419 | for (p0 = XSTRING (pattern)->data; *p0; p0++) | |
420 | { | |
421 | if (*p0 == '*') | |
422 | { | |
423 | *p1++ = '.'; | |
424 | *p1++ = '*'; | |
425 | } | |
426 | else if (*p0 == '?') | |
427 | *p1++ == '.'; | |
428 | else | |
429 | *p1++ = *p0; | |
430 | } | |
431 | } | |
432 | *p1++ = '$'; | |
433 | *p1++ = 0; | |
434 | ||
435 | Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data), | |
436 | build_string (regex)); | |
437 | } | |
438 | ||
439 | return CACHED_FONTSET_REGEX; | |
440 | } | |
441 | ||
442 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 1, 0, | |
443 | "Return a fontset name which matches PATTERN, nil if no matching fontset.\n\ | |
444 | PATTERN can contain `*' or `?' as a wild card\n\ | |
445 | just like X's font name matching algorithm allows.") | |
446 | (pattern) | |
447 | Lisp_Object pattern; | |
448 | { | |
449 | Lisp_Object regexp, tem; | |
450 | ||
451 | (*check_window_system_func) (); | |
452 | ||
453 | CHECK_STRING (pattern, 0); | |
454 | ||
455 | if (XSTRING (pattern)->size == 0) | |
456 | return Qnil; | |
457 | ||
458 | regexp = fontset_pattern_regexp (pattern); | |
459 | ||
460 | for (tem = Vglobal_fontset_alist; CONSP (tem); tem = XCONS (tem)->cdr) | |
461 | { | |
462 | Lisp_Object fontset_name = XCONS (XCONS (tem)->car)->car; | |
463 | if (!NILP (regexp)) | |
464 | { | |
465 | if (fast_string_match_ignore_case (regexp, | |
466 | XSTRING (fontset_name)->data) | |
467 | >= 0) | |
468 | return fontset_name; | |
469 | } | |
470 | else | |
471 | { | |
472 | if (!my_strcasecmp (XSTRING (pattern)->data, | |
473 | XSTRING (fontset_name)->data)) | |
474 | return fontset_name; | |
475 | } | |
476 | } | |
477 | ||
478 | return Qnil; | |
479 | } | |
480 | ||
481 | Lisp_Object Fframe_char_width (); | |
482 | ||
483 | /* Return a list of names of available fontsets matching PATTERN on | |
484 | frame F. If SIZE is not 0, it is the size (maximum bound width) of | |
485 | fontsets to be listed. */ | |
486 | ||
487 | Lisp_Object | |
488 | list_fontsets (f, pattern, size) | |
489 | FRAME_PTR f; | |
490 | Lisp_Object pattern; | |
491 | int size; | |
492 | { | |
493 | int i; | |
494 | Lisp_Object regexp, val; | |
495 | ||
496 | regexp = fontset_pattern_regexp (pattern); | |
497 | ||
498 | val = Qnil; | |
499 | for (i = 0; i < FRAME_FONTSET_DATA (f)->n_fontsets; i++) | |
500 | { | |
501 | struct fontset_info *fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[i]; | |
502 | int name_matched = 0; | |
503 | int size_matched = 0; | |
504 | ||
505 | if (!NILP (regexp)) | |
506 | { | |
507 | if (fast_string_match_ignore_case (regexp, fontsetp->name) >= 0) | |
508 | name_matched = 1; | |
509 | } | |
510 | else | |
511 | { | |
512 | if (!my_strcasecmp (XSTRING (pattern)->data, fontsetp->name)) | |
513 | name_matched = 1; | |
514 | } | |
515 | ||
516 | if (name_matched) | |
517 | { | |
518 | if (!size || fontsetp->size == size) | |
519 | size_matched = 1; | |
520 | else if (fontsetp->size == 0) | |
521 | { | |
522 | /* No font of this fontset has loaded yet. Try loading | |
523 | one with SIZE. */ | |
524 | int j; | |
525 | ||
467e7675 | 526 | for (j = 0; j <= MAX_CHARSET; j++) |
4ed46869 KH |
527 | if (fontsetp->fontname[j]) |
528 | { | |
529 | if ((*load_font_func) (f, fontsetp->fontname[j], size)) | |
530 | size_matched = 1; | |
531 | break; | |
532 | } | |
533 | } | |
534 | ||
535 | if (size_matched) | |
536 | val = Fcons (build_string (fontsetp->name), val); | |
537 | } | |
538 | } | |
539 | ||
540 | return val; | |
541 | } | |
542 | ||
543 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, | |
544 | "Create a new fontset NAME which contains fonts in FONTLIST.\n\ | |
545 | FONTLIST is an alist of charsets vs corresponding font names.") | |
546 | (name, fontlist) | |
547 | Lisp_Object name, fontlist; | |
548 | { | |
549 | Lisp_Object fullname, fontset_info; | |
550 | Lisp_Object tail; | |
551 | ||
552 | (*check_window_system_func) (); | |
553 | ||
554 | CHECK_STRING (name, 0); | |
555 | CHECK_LIST (fontlist, 1); | |
556 | ||
557 | fullname = Fquery_fontset (name); | |
558 | if (!NILP (fullname)) | |
559 | error ("Fontset \"%s\" matches the existing fontset \"%s\"", | |
560 | XSTRING (name)->data, XSTRING (fullname)->data); | |
561 | ||
562 | /* Check the validity of FONTLIST. */ | |
563 | for (tail = fontlist; CONSP (tail); tail = XCONS (tail)->cdr) | |
564 | { | |
565 | Lisp_Object tem = XCONS (tail)->car; | |
566 | int charset; | |
567 | ||
568 | if (!CONSP (tem) | |
569 | || (charset = get_charset_id (XCONS (tem)->car)) < 0 | |
570 | || !STRINGP (XCONS (tem)->cdr)) | |
571 | error ("Elements of fontlist must be a cons of charset and font name"); | |
572 | } | |
573 | ||
574 | fontset_info = Fcons (name, fontlist); | |
575 | Vglobal_fontset_alist = Fcons (fontset_info, Vglobal_fontset_alist); | |
576 | ||
577 | /* Register this fontset for all existing frames. */ | |
578 | { | |
579 | Lisp_Object framelist, frame; | |
580 | ||
581 | FOR_EACH_FRAME (framelist, frame) | |
582 | if (!FRAME_TERMCAP_P (XFRAME (frame))) | |
583 | fs_register_fontset (XFRAME (frame), fontset_info); | |
584 | } | |
585 | ||
586 | return Qnil; | |
587 | } | |
588 | ||
589 | extern Lisp_Object Fframe_parameters (); | |
590 | extern Lisp_Object Qfont; | |
591 | Lisp_Object Qfontset; | |
592 | ||
593 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0, | |
594 | "Set FONTNAME for a font of CHARSET in fontset NAME on frame FRAME.\n\ | |
595 | If FRAME is omitted or nil, all frames are affected.") | |
596 | (name, charset_symbol, fontname, frame) | |
597 | Lisp_Object name, charset_symbol, fontname, frame; | |
598 | { | |
599 | int charset; | |
600 | Lisp_Object fullname, fontlist; | |
601 | ||
602 | (*check_window_system_func) (); | |
603 | ||
604 | CHECK_STRING (name, 0); | |
605 | CHECK_SYMBOL (charset_symbol, 1); | |
606 | CHECK_STRING (fontname, 2); | |
607 | if (!NILP (frame)) | |
608 | CHECK_LIVE_FRAME (frame, 3); | |
609 | ||
610 | if ((charset = get_charset_id (charset_symbol)) < 0) | |
611 | error ("Invalid charset: %s", XSYMBOL (charset_symbol)->name->data); | |
612 | ||
613 | fullname = Fquery_fontset (name); | |
614 | if (NILP (fullname)) | |
615 | error ("Fontset \"%s\" does not exist", XSTRING (name)->data); | |
616 | ||
617 | /* If FRAME is not specified, we must, at first, update contents of | |
618 | `global-fontset-alist' for a frame created in the future. */ | |
619 | if (NILP (frame)) | |
620 | { | |
621 | Lisp_Object fontset_info = Fassoc (fullname, Vglobal_fontset_alist); | |
6a7e6d80 | 622 | Lisp_Object tem = Fassq (charset_symbol, XCONS (fontset_info)->cdr); |
4ed46869 KH |
623 | |
624 | if (NILP (tem)) | |
625 | XCONS (fontset_info)->cdr | |
6a7e6d80 KH |
626 | = Fcons (Fcons (charset_symbol, fontname), |
627 | XCONS (fontset_info)->cdr); | |
4ed46869 KH |
628 | else |
629 | XCONS (tem)->cdr = fontname; | |
630 | } | |
631 | ||
632 | /* Then, update information in the specified frame or all existing | |
633 | frames. */ | |
634 | { | |
635 | Lisp_Object framelist, tem; | |
636 | ||
637 | FOR_EACH_FRAME (framelist, tem) | |
638 | if (!FRAME_TERMCAP_P (XFRAME (tem)) | |
639 | && (NILP (frame) || EQ (frame, tem))) | |
640 | { | |
641 | FRAME_PTR f = XFRAME (tem); | |
642 | int fontset = fs_query_fontset (f, XSTRING (fullname)->data); | |
643 | struct fontset_info *fontsetp | |
644 | = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
645 | ||
6a7e6d80 KH |
646 | if (fontsetp->fontname[charset]) |
647 | xfree (fontsetp->fontname[charset]); | |
648 | fontsetp->fontname[charset] | |
4ed46869 | 649 | = (char *) xmalloc (XSTRING (fontname)->size + 1); |
6a7e6d80 | 650 | bcopy (XSTRING (fontname)->data, fontsetp->fontname[charset], |
4ed46869 | 651 | XSTRING (fontname)->size + 1); |
6a7e6d80 | 652 | fontsetp->font_indexes[charset] = FONT_NOT_OPENED; |
4ed46869 KH |
653 | |
654 | if (charset == CHARSET_ASCII) | |
655 | { | |
656 | Lisp_Object font_param = Fassq (Qfont, Fframe_parameters (tem)); | |
657 | ||
658 | if (set_frame_fontset_func | |
659 | && !NILP (font_param) | |
660 | && !strcmp (XSTRING (fullname)->data, | |
661 | XSTRING (XCONS (font_param)->cdr)->data)) | |
662 | /* This fontset is the default fontset on frame TEM. | |
663 | We may have to resize this frame because of new | |
664 | ASCII font. */ | |
665 | (*set_frame_fontset_func) (f, fullname, Qnil); | |
666 | } | |
667 | } | |
668 | } | |
669 | ||
670 | return Qnil; | |
671 | } | |
672 | ||
673 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, | |
674 | "Return information about a font named NAME on frame FRAME.\n\ | |
675 | If FRAME is omitted or nil, use the selected frame.\n\ | |
676 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE,\n\ | |
6a7e6d80 | 677 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT,\n\ |
4ed46869 KH |
678 | where\n\ |
679 | OPENED-NAME is the name used for opening the font,\n\ | |
680 | FULL-NAME is the full name of the font,\n\ | |
681 | CHARSET is the charset displayed by the font,\n\ | |
682 | SIZE is the minimum bound width of the font,\n\ | |
683 | HEIGHT is the height of the font,\n\ | |
684 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline,\n\ | |
6a7e6d80 KH |
685 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling\n\ |
686 | how to compose characters.\n\ | |
4ed46869 KH |
687 | If the named font is not yet loaded, return nil.") |
688 | (name, frame) | |
689 | Lisp_Object name, frame; | |
690 | { | |
691 | FRAME_PTR f; | |
692 | struct font_info *fontp; | |
693 | Lisp_Object info; | |
694 | ||
695 | (*check_window_system_func) (); | |
696 | ||
697 | CHECK_STRING (name, 0); | |
698 | if (NILP (frame)) | |
699 | f = selected_frame; | |
700 | else | |
701 | { | |
702 | CHECK_LIVE_FRAME (frame, 1); | |
703 | f = XFRAME (frame); | |
704 | } | |
705 | ||
706 | if (!query_font_func) | |
707 | error ("Font query function is not supported"); | |
708 | ||
709 | fontp = (*query_font_func) (f, XSTRING (name)->data); | |
710 | if (!fontp) | |
711 | return Qnil; | |
712 | ||
6a7e6d80 | 713 | info = Fmake_vector (make_number (7), Qnil); |
4ed46869 KH |
714 | |
715 | XVECTOR (info)->contents[0] = build_string (fontp->name); | |
716 | XVECTOR (info)->contents[1] = build_string (fontp->full_name); | |
717 | XVECTOR (info)->contents[2] = CHARSET_SYMBOL (fontp->charset); | |
718 | XVECTOR (info)->contents[3] = make_number (fontp->size); | |
719 | XVECTOR (info)->contents[4] = make_number (fontp->height); | |
720 | XVECTOR (info)->contents[5] = make_number (fontp->baseline_offset); | |
721 | XVECTOR (info)->contents[6] = make_number (fontp->relative_compose); | |
6a7e6d80 | 722 | XVECTOR (info)->contents[7] = make_number (fontp->default_ascent); |
4ed46869 KH |
723 | |
724 | return info; | |
725 | } | |
726 | ||
727 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, | |
728 | "Return information about a fontset named NAME on frame FRAME.\n\ | |
729 | If FRAME is omitted or nil, use the selected frame.\n\ | |
730 | The returned value is a vector of SIZE, HEIGHT, and FONT-LIST,\n\ | |
731 | where\n\ | |
732 | SIZE is the minimum bound width of ASCII font of the fontset,\n\ | |
733 | HEIGHT is the height of the tallest font in the fontset, and\n\ | |
734 | FONT-LIST is an alist of the format:\n\ | |
735 | (CHARSET REQUESTED-FONT-NAME LOADED-FONT-NAME).\n\ | |
736 | LOADED-FONT-NAME t means the font is not yet loaded, nil means the\n\ | |
737 | loading failed.") | |
738 | (name, frame) | |
739 | Lisp_Object name, frame; | |
740 | { | |
741 | FRAME_PTR f; | |
742 | int fontset; | |
743 | struct fontset_info *fontsetp; | |
744 | Lisp_Object info, val; | |
745 | int i; | |
746 | ||
747 | (*check_window_system_func) (); | |
748 | ||
749 | CHECK_STRING(name, 0); | |
750 | if (NILP (frame)) | |
751 | f = selected_frame; | |
752 | else | |
753 | { | |
754 | CHECK_LIVE_FRAME (frame, 1); | |
755 | f = XFRAME (frame); | |
756 | } | |
757 | ||
758 | fontset = fs_query_fontset (f, XSTRING (name)->data); | |
759 | if (fontset < 0) | |
760 | error ("Fontset \"%s\" does not exist", XSTRING (name)->data); | |
761 | ||
762 | info = Fmake_vector (make_number (3), Qnil); | |
763 | ||
764 | fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
765 | ||
766 | XVECTOR (info)->contents[0] = make_number (fontsetp->size); | |
767 | XVECTOR (info)->contents[1] = make_number (fontsetp->height); | |
768 | val = Qnil; | |
467e7675 | 769 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
770 | if (fontsetp->fontname[i]) |
771 | { | |
772 | int font_idx = fontsetp->font_indexes[i]; | |
773 | Lisp_Object loaded; | |
774 | ||
775 | if (font_idx == FONT_NOT_OPENED) | |
776 | loaded = Qt; | |
777 | else if (font_idx == FONT_NOT_FOUND) | |
778 | loaded = Qnil; | |
779 | else | |
780 | loaded | |
781 | = build_string ((*get_font_info_func) (f, font_idx)->full_name); | |
782 | val = Fcons (Fcons (CHARSET_SYMBOL (i), | |
783 | Fcons (build_string (fontsetp->fontname[i]), | |
784 | Fcons (loaded, Qnil))), | |
785 | val); | |
786 | } | |
787 | XVECTOR (info)->contents[2] = val; | |
788 | return info; | |
789 | } | |
790 | ||
791 | syms_of_fontset () | |
792 | { | |
793 | int i; | |
794 | ||
795 | for (i = 0; i < 256; i++) | |
796 | my_strcasetbl[i] = (i >= 'A' && i <= 'Z') ? i + 'a' - 'A' : i; | |
797 | ||
798 | if (!load_font_func) | |
799 | /* Window system initializer should have set proper functions. */ | |
800 | abort (); | |
801 | ||
6a7e6d80 | 802 | Qfontset = intern ("fontset"); |
4ed46869 KH |
803 | staticpro (&Qfontset); |
804 | ||
805 | Vcached_fontset_data = Qnil; | |
806 | staticpro (&Vcached_fontset_data); | |
807 | ||
808 | DEFVAR_LISP ("global-fontset-alist", &Vglobal_fontset_alist, | |
809 | "Internal data for fontset. Not for external use.\n\ | |
810 | This is an alist associating fontset names with the lists of fonts\n\ | |
811 | contained in them.\n\ | |
812 | Newly created frames make their own fontset database from here."); | |
813 | Vglobal_fontset_alist = Qnil; | |
814 | ||
815 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, | |
816 | "Alist of fontname patterns vs corresponding encoding info.\n\ | |
817 | Each element looks like (REGEXP . ENCODING-INFO),\n\ | |
818 | where ENCODING-INFO is an alist of CHARSET vs ENCODING.\n\ | |
819 | ENCODING is one of the following integer values:\n\ | |
820 | 0: code points 0x20..0x7F or 0x2020..0x7F7F are used,\n\ | |
821 | 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used,\n\ | |
822 | 2: code points 0x20A0..0x7FFF are used,\n\ | |
823 | 3: code points 0xA020..0xFF7F are used."); | |
824 | Vfont_encoding_alist = Qnil; | |
825 | ||
6a7e6d80 KH |
826 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
827 | "Char table of characters of which ascent values should be ignored.\n\ | |
828 | If an entry for a character is non-nil, the ascent value of the glyph\n\ | |
829 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font."); | |
830 | Vuse_default_ascent = Qnil; | |
831 | ||
8c83e4f9 KH |
832 | DEFVAR_LISP ("alternative-fontname-alist", &Valternative_fontname_alist, |
833 | "Alist of fontname vs list of the alternative fontnames. | |
834 | When no font can be opened by a fontname, the corresponding | |
835 | alternative fontnames are tried."); | |
836 | Valternative_fontname_alist = Qnil; | |
837 | ||
ec3bb068 KH |
838 | DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font, |
839 | "*Non-nil means highlight characters shown in wrong size fonts somehow.\n\ | |
840 | The way to highlight them depends on window system on which Emacs runs.\n\ | |
841 | On X window, rectangle is shown around each such characters."); | |
842 | Vhighlight_wrong_size_font = Qt; | |
843 | ||
844 | DEFVAR_LISP ("clip-large-size-font", &Vclip_large_size_font, | |
845 | "*Non-nil means clip glyphs shown in large size fonts.\n\ | |
846 | The hight of clipping area is the same as the hight of ASCII characters."); | |
847 | Vclip_large_size_font = Qt; | |
848 | ||
4ed46869 KH |
849 | defsubr (&Squery_fontset); |
850 | defsubr (&Snew_fontset); | |
851 | defsubr (&Sset_fontset_font); | |
852 | defsubr (&Sfont_info); | |
853 | defsubr (&Sfontset_info); | |
854 | } |