Commit | Line | Data |
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4ed46869 | 1 | /* Fontset handler. |
75c8c592 RS |
2 | Copyright (C) 1995, 1997 Electrotechnical Laboratory, JAPAN. |
3 | Licensed to the Free Software Foundation. | |
4ed46869 | 4 | |
369314dc KH |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
4ed46869 | 11 | |
369314dc KH |
12 | GNU Emacs is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
4ed46869 | 16 | |
369314dc KH |
17 | You should have received a copy of the GNU General Public License |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
4ed46869 KH |
21 | |
22 | #include <config.h> | |
23 | #if HAVE_ALLOCA_H | |
24 | #include <alloca.h> | |
25 | #endif /* HAVE_ALLOCA_H */ | |
26 | #include "lisp.h" | |
27 | #include "charset.h" | |
28 | #include "ccl.h" | |
29 | #include "fontset.h" | |
30 | #include "frame.h" | |
31 | ||
32 | Lisp_Object Vglobal_fontset_alist; | |
4ed46869 | 33 | Lisp_Object Vfont_encoding_alist; |
6a7e6d80 | 34 | Lisp_Object Vuse_default_ascent; |
8c83e4f9 | 35 | Lisp_Object Valternative_fontname_alist; |
1c283e35 | 36 | Lisp_Object Vfontset_alias_alist; |
ec3bb068 KH |
37 | Lisp_Object Vhighlight_wrong_size_font; |
38 | Lisp_Object Vclip_large_size_font; | |
4ed46869 | 39 | |
d5e7d534 KH |
40 | /* Used as a temporary in macro FS_LOAD_FONT. */ |
41 | int font_idx_temp; | |
42 | ||
4ed46869 KH |
43 | /* We had better have our own strcasecmp function because some system |
44 | doesn't have it. */ | |
45 | static char my_strcasetbl[256]; | |
46 | ||
47 | /* Compare two strings S0 and S1 while ignoring differences in case. | |
48 | Return 1 if they differ, else return 0. */ | |
49 | static int | |
50 | my_strcasecmp (s0, s1) | |
51 | unsigned char *s0, *s1; | |
52 | { | |
53 | while (*s0) | |
54 | if (my_strcasetbl[*s0++] != my_strcasetbl[*s1++]) return 1; | |
55 | return (int) *s1; | |
56 | } | |
57 | ||
58 | /* The following six are window system dependent functions. See | |
59 | the comments in src/fontset.h for more detail. */ | |
60 | ||
61 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ | |
62 | struct font_info *(*get_font_info_func) (/* FRAME_PTR f; int font_idx */); | |
63 | ||
64 | /* Return a list of font names which matches PATTERN. See the document of | |
65 | `x-list-fonts' for more detail. */ | |
66 | Lisp_Object (*list_fonts_func) (/* Lisp_Object pattern, face, frame, width */); | |
67 | ||
68 | /* Load a font named NAME for frame F and return a pointer to the | |
69 | information of the loaded font. If loading is failed, return 0. */ | |
70 | struct font_info *(*load_font_func) (/* FRAME_PTR f; char *name */); | |
71 | ||
72 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ | |
73 | struct font_info *(*query_font_func) (/* FRAME_PTR f; char *name */); | |
74 | ||
75 | /* Additional function for setting fontset or changing fontset | |
76 | contents of frame F. */ | |
77 | void (*set_frame_fontset_func) (/* FRAME_PTR f; Lisp_Object arg, oldval */); | |
78 | ||
79 | /* Check if any window system is used now. */ | |
80 | void (*check_window_system_func) (); | |
81 | ||
82 | struct fontset_data * | |
83 | alloc_fontset_data () | |
84 | { | |
85 | struct fontset_data *fontset_data | |
86 | = (struct fontset_data *) xmalloc (sizeof (struct fontset_data)); | |
87 | ||
88 | bzero (fontset_data, sizeof (struct fontset_data)); | |
89 | ||
90 | return fontset_data; | |
91 | } | |
92 | ||
93 | void | |
94 | free_fontset_data (fontset_data) | |
95 | struct fontset_data *fontset_data; | |
96 | { | |
97 | int i; | |
98 | ||
99 | for (i = 0; i < fontset_data->n_fontsets; i++) | |
100 | { | |
101 | int j; | |
102 | ||
103 | xfree (fontset_data->fontset_table[i]->name); | |
467e7675 | 104 | for (j = 0; j <= MAX_CHARSET; j++) |
4ed46869 KH |
105 | if (fontset_data->fontset_table[i]->fontname[j]) |
106 | xfree (fontset_data->fontset_table[i]->fontname[j]); | |
107 | xfree (fontset_data->fontset_table[i]); | |
108 | } | |
109 | xfree (fontset_data->fontset_table); | |
110 | ||
111 | xfree (fontset_data); | |
112 | } | |
113 | ||
114 | /* Load a font named FONTNAME for displaying CHARSET on frame F. | |
115 | All fonts for frame F is stored in a table pointed by FONT_TABLE. | |
116 | Return a pointer to the struct font_info of the loaded font. | |
117 | If loading fails, return 0; | |
118 | If FONTNAME is NULL, the name is taken from the information of FONTSET. | |
119 | If FONTSET is given, try to load a font whose size matches that of | |
d5e7d534 KH |
120 | FONTSET, and, the font index is stored in the table for FONTSET. |
121 | ||
122 | If you give FONTSET argument, don't call this function directry, | |
123 | instead call macro FS_LOAD_FONT with the same argument. */ | |
4ed46869 KH |
124 | |
125 | struct font_info * | |
126 | fs_load_font (f, font_table, charset, fontname, fontset) | |
127 | FRAME_PTR f; | |
128 | struct font_info *font_table; | |
129 | int charset, fontset; | |
130 | char *fontname; | |
131 | { | |
132 | Lisp_Object font_list; | |
133 | Lisp_Object list, elt; | |
134 | int font_idx; | |
135 | int size = 0; | |
136 | struct fontset_info *fontsetp = 0; | |
137 | struct font_info *fontp; | |
138 | ||
139 | if (fontset >= 0 && fontset < FRAME_FONTSET_DATA (f)->n_fontsets) | |
140 | { | |
141 | fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
142 | font_idx = fontsetp->font_indexes[charset]; | |
143 | if (font_idx >= 0) | |
144 | /* We have already loaded a font. */ | |
145 | return font_table + font_idx; | |
146 | else if (font_idx == FONT_NOT_FOUND) | |
147 | /* We have already tried loading a font and failed. */ | |
148 | return 0; | |
149 | if (!fontname) | |
150 | fontname = fontsetp->fontname[charset]; | |
151 | } | |
152 | ||
153 | if (!fontname) | |
154 | /* No way to get fontname. */ | |
155 | return 0; | |
156 | ||
afbee0fa KH |
157 | /* If CHARSET is not ASCII and FONTSET is specified, we must load a |
158 | font of appropriate size to be used with other fonts in this | |
159 | fontset. */ | |
160 | if (charset != CHARSET_ASCII && fontsetp) | |
161 | { | |
162 | /* If we have not yet loaded ASCII font of FONTSET, we must load | |
163 | it now to decided the size and height of this fontset. */ | |
164 | if (fontsetp->size == 0) | |
165 | { | |
166 | fontp = fs_load_font (f, font_table, CHARSET_ASCII, 0, fontset); | |
167 | if (!fontp) | |
168 | /* Any fontset should contain avairable ASCII. */ | |
169 | return 0; | |
170 | } | |
171 | /* Now we have surely decided the size of this fontset. */ | |
172 | size = fontsetp->size * CHARSET_WIDTH (charset); | |
173 | } | |
4ed46869 KH |
174 | |
175 | fontp = (*load_font_func) (f, fontname, size); | |
176 | ||
177 | if (!fontp) | |
178 | { | |
179 | if (fontsetp) | |
180 | fontsetp->font_indexes[charset] = FONT_NOT_FOUND; | |
181 | return 0; | |
182 | } | |
183 | ||
184 | /* Fill in fields (CHARSET, ENCODING, and FONT_ENCODER) which are | |
185 | not set by (*load_font_func). */ | |
186 | fontp->charset = charset; | |
187 | ||
afbee0fa | 188 | if (fontp->encoding[1] != FONT_ENCODING_NOT_DECIDED) |
4ed46869 KH |
189 | { |
190 | /* The font itself tells which code points to be used. Use this | |
191 | encoding for all other charsets. */ | |
192 | int i; | |
193 | ||
194 | fontp->encoding[0] = fontp->encoding[1]; | |
467e7675 | 195 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
196 | fontp->encoding[i] = fontp->encoding[1]; |
197 | } | |
198 | else | |
199 | { | |
200 | /* The font itself doesn't tell which code points to be used. */ | |
201 | int i; | |
202 | ||
203 | /* At first, set 1 (means 0xA0..0xFF) as the default. */ | |
204 | fontp->encoding[0] = 1; | |
467e7675 | 205 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
206 | fontp->encoding[i] = 1; |
207 | /* Then override them by a specification in Vfont_encoding_alist. */ | |
208 | for (list = Vfont_encoding_alist; CONSP (list); list = XCONS (list)->cdr) | |
209 | { | |
210 | elt = XCONS (list)->car; | |
211 | if (CONSP (elt) | |
212 | && STRINGP (XCONS (elt)->car) && CONSP (XCONS (elt)->cdr) | |
dacc955c | 213 | && (fast_c_string_match_ignore_case (XCONS (elt)->car, fontname) |
4ed46869 KH |
214 | >= 0)) |
215 | { | |
216 | Lisp_Object tmp; | |
217 | ||
218 | for (tmp = XCONS (elt)->cdr; CONSP (tmp); tmp = XCONS (tmp)->cdr) | |
219 | if (CONSP (XCONS (tmp)->car) | |
4ed46869 KH |
220 | && ((i = get_charset_id (XCONS (XCONS (tmp)->car)->car)) |
221 | >= 0) | |
222 | && INTEGERP (XCONS (XCONS (tmp)->car)->cdr) | |
223 | && XFASTINT (XCONS (XCONS (tmp)->car)->cdr) < 4) | |
224 | fontp->encoding[i] | |
225 | = XFASTINT (XCONS (XCONS (tmp)->car)->cdr); | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | fontp->font_encoder = (struct ccl_program *) 0; | |
231 | for (list = Vfont_ccl_encoder_alist; CONSP (list); list = XCONS (list)->cdr) | |
232 | { | |
233 | elt = XCONS (list)->car; | |
234 | if (CONSP (elt) | |
235 | && STRINGP (XCONS (elt)->car) && VECTORP (XCONS (elt)->cdr) | |
dacc955c | 236 | && fast_c_string_match_ignore_case (XCONS (elt)->car, fontname) >= 0) |
4ed46869 KH |
237 | { |
238 | fontp->font_encoder | |
239 | = (struct ccl_program *) xmalloc (sizeof (struct ccl_program)); | |
240 | setup_ccl_program (fontp->font_encoder, XCONS (elt)->cdr); | |
241 | break; | |
242 | } | |
243 | } | |
244 | ||
afbee0fa | 245 | /* If FONTSET is specified, setup various fields of it. */ |
4ed46869 KH |
246 | if (fontsetp) |
247 | { | |
248 | fontsetp->font_indexes[charset] = fontp->font_idx; | |
afbee0fa | 249 | if (charset == CHARSET_ASCII) |
4ed46869 | 250 | { |
afbee0fa KH |
251 | /* Decide or change the size and height of this fontset. */ |
252 | if (fontsetp->size == 0) | |
4ed46869 | 253 | { |
afbee0fa KH |
254 | fontsetp->size = fontp->size; |
255 | fontsetp->height = fontp->height; | |
256 | } | |
257 | else if (fontsetp->size != fontp->size | |
258 | || fontsetp->height != fontp->height) | |
259 | { | |
260 | /* When loading ASCII font of the different size from | |
261 | the size of FONTSET, we have to update the size of | |
262 | FONTSET. Since changing the size of FONTSET may make | |
263 | some fonts already loaded inappropriate to be used in | |
264 | FONTSET, we must delete the record of such fonts. In | |
265 | that case, we also have to calculate the height of | |
266 | FONTSET from the remaining fonts. */ | |
267 | int i; | |
268 | ||
269 | fontsetp->size = fontp->size; | |
270 | fontsetp->height = fontp->height; | |
271 | for (i = CHARSET_ASCII + 1; i <= MAX_CHARSET; i++) | |
4ed46869 | 272 | { |
afbee0fa KH |
273 | font_idx = fontsetp->font_indexes[i]; |
274 | if (font_idx >= 0) | |
275 | { | |
276 | struct font_info *fontp2 = font_table + font_idx; | |
277 | ||
278 | if (fontp2->size != fontp->size * CHARSET_WIDTH (i)) | |
279 | fontsetp->font_indexes[i] = FONT_NOT_OPENED; | |
280 | /* The following code should be disabled until | |
281 | Emacs supports variable height lines. */ | |
6a7e6d80 | 282 | #if 0 |
afbee0fa KH |
283 | else if (fontsetp->height < fontp->height) |
284 | fontsetp->height = fontp->height; | |
6a7e6d80 | 285 | #endif |
afbee0fa | 286 | } |
4ed46869 KH |
287 | } |
288 | } | |
289 | } | |
4ed46869 KH |
290 | } |
291 | ||
292 | return fontp; | |
293 | } | |
294 | ||
295 | /* Return ID of the fontset named NAME on frame F. */ | |
296 | ||
297 | int | |
298 | fs_query_fontset (f, name) | |
299 | FRAME_PTR f; | |
300 | char *name; | |
301 | { | |
302 | struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f); | |
303 | int i; | |
304 | ||
305 | for (i = 0; i < fontset_data->n_fontsets; i++) | |
306 | if (!my_strcasecmp(name, fontset_data->fontset_table[i]->name)) | |
307 | return i; | |
308 | return -1; | |
309 | } | |
310 | ||
311 | /* Register a fontset specified by FONTSET_INFO for frame FRAME. | |
312 | Return the fontset ID if successfully registered, else return -1. | |
313 | FONTSET_INFO is a cons of name of the fontset and FONTLIST, where | |
314 | FONTLIST is an alist of charsets vs fontnames. */ | |
315 | ||
316 | int | |
317 | fs_register_fontset (f, fontset_info) | |
318 | FRAME_PTR f; | |
319 | Lisp_Object fontset_info; | |
320 | { | |
321 | struct fontset_data *fontset_data = FRAME_FONTSET_DATA (f); | |
322 | Lisp_Object name, fontlist; | |
323 | int fontset; | |
324 | struct fontset_info *fontsetp; | |
325 | int i; | |
326 | ||
327 | if (!CONSP (fontset_info) | |
328 | || !STRINGP (XCONS (fontset_info)->car) | |
329 | || !CONSP (XCONS (fontset_info)->cdr)) | |
330 | /* Invalid data in FONTSET_INFO. */ | |
331 | return -1; | |
332 | ||
333 | name = XCONS (fontset_info)->car; | |
334 | if ((fontset = fs_query_fontset (f, XSTRING (name)->data)) >= 0) | |
335 | /* This fontset already exists on frame F. */ | |
336 | return fontset; | |
337 | ||
338 | fontsetp = (struct fontset_info *) xmalloc (sizeof (struct fontset_info)); | |
339 | ||
340 | fontsetp->name = (char *) xmalloc (XSTRING (name)->size + 1); | |
341 | bcopy(XSTRING (name)->data, fontsetp->name, XSTRING (name)->size + 1); | |
342 | ||
343 | fontsetp->size = fontsetp->height = 0; | |
344 | ||
467e7675 | 345 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
346 | { |
347 | fontsetp->fontname[i] = (char *) 0; | |
348 | fontsetp->font_indexes[i] = FONT_NOT_OPENED; | |
349 | } | |
350 | ||
351 | for (fontlist = XCONS (fontset_info)->cdr; CONSP (fontlist); | |
352 | fontlist = XCONS (fontlist)->cdr) | |
353 | { | |
354 | Lisp_Object tem = Fcar (fontlist); | |
355 | int charset; | |
356 | ||
357 | if (CONSP (tem) | |
358 | && (charset = get_charset_id (XCONS (tem)->car)) >= 0 | |
359 | && STRINGP (XCONS (tem)->cdr)) | |
360 | { | |
361 | fontsetp->fontname[charset] | |
362 | = (char *) xmalloc (XSTRING (XCONS (tem)->cdr)->size + 1); | |
363 | bcopy (XSTRING (XCONS (tem)->cdr)->data, | |
364 | fontsetp->fontname[charset], | |
365 | XSTRING (XCONS (tem)->cdr)->size + 1); | |
366 | } | |
367 | else | |
368 | /* Broken or invalid data structure. */ | |
369 | return -1; | |
370 | } | |
371 | ||
372 | /* Do we need to create the table? */ | |
373 | if (fontset_data->fontset_table_size == 0) | |
374 | { | |
375 | fontset_data->fontset_table_size = 8; | |
376 | fontset_data->fontset_table | |
377 | = (struct fontset_info **) xmalloc (fontset_data->fontset_table_size | |
378 | * sizeof (struct fontset_info *)); | |
379 | } | |
380 | /* Do we need to grow the table? */ | |
381 | else if (fontset_data->n_fontsets >= fontset_data->fontset_table_size) | |
382 | { | |
383 | fontset_data->fontset_table_size += 8; | |
384 | fontset_data->fontset_table | |
385 | = (struct fontset_info **) xrealloc (fontset_data->fontset_table, | |
386 | fontset_data->fontset_table_size | |
387 | * sizeof (struct fontset_info *)); | |
388 | } | |
389 | fontset = fontset_data->n_fontsets++; | |
390 | fontset_data->fontset_table[fontset] = fontsetp; | |
391 | ||
392 | return fontset; | |
393 | } | |
394 | ||
395 | /* Cache data used by fontset_pattern_regexp. The car part is a | |
396 | pattern string containing at least one wild card, the cdr part is | |
397 | the corresponding regular expression. */ | |
398 | static Lisp_Object Vcached_fontset_data; | |
399 | ||
400 | #define CACHED_FONTSET_NAME (XSTRING (XCONS (Vcached_fontset_data)->car)->data) | |
401 | #define CACHED_FONTSET_REGEX (XCONS (Vcached_fontset_data)->cdr) | |
402 | ||
403 | /* If fontset name PATTERN contains any wild card, return regular | |
404 | expression corresponding to PATTERN. */ | |
405 | ||
406 | Lisp_Object | |
407 | fontset_pattern_regexp (pattern) | |
408 | Lisp_Object pattern; | |
409 | { | |
4ed46869 KH |
410 | if (!index (XSTRING (pattern)->data, '*') |
411 | && !index (XSTRING (pattern)->data, '?')) | |
412 | /* PATTERN does not contain any wild cards. */ | |
1c283e35 | 413 | return Qnil; |
4ed46869 KH |
414 | |
415 | if (!CONSP (Vcached_fontset_data) | |
416 | || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME)) | |
417 | { | |
418 | /* We must at first update the cached data. */ | |
1c283e35 | 419 | char *regex = (char *) alloca (XSTRING (pattern)->size * 2); |
4ed46869 KH |
420 | char *p0, *p1 = regex; |
421 | ||
1c283e35 KH |
422 | /* Convert "*" to ".*", "?" to ".". */ |
423 | *p1++ = '^'; | |
ea5239ec | 424 | for (p0 = (char *) XSTRING (pattern)->data; *p0; p0++) |
4ed46869 | 425 | { |
1c283e35 | 426 | if (*p0 == '*') |
4ed46869 | 427 | { |
1c283e35 KH |
428 | *p1++ = '.'; |
429 | *p1++ = '*'; | |
4ed46869 | 430 | } |
1c283e35 KH |
431 | else if (*p0 == '?') |
432 | *p1++ == '.'; | |
433 | else | |
434 | *p1++ = *p0; | |
4ed46869 KH |
435 | } |
436 | *p1++ = '$'; | |
437 | *p1++ = 0; | |
438 | ||
439 | Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data), | |
440 | build_string (regex)); | |
441 | } | |
442 | ||
443 | return CACHED_FONTSET_REGEX; | |
444 | } | |
445 | ||
446 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 1, 0, | |
447 | "Return a fontset name which matches PATTERN, nil if no matching fontset.\n\ | |
448 | PATTERN can contain `*' or `?' as a wild card\n\ | |
449 | just like X's font name matching algorithm allows.") | |
450 | (pattern) | |
451 | Lisp_Object pattern; | |
452 | { | |
453 | Lisp_Object regexp, tem; | |
454 | ||
455 | (*check_window_system_func) (); | |
456 | ||
457 | CHECK_STRING (pattern, 0); | |
458 | ||
459 | if (XSTRING (pattern)->size == 0) | |
460 | return Qnil; | |
461 | ||
1c283e35 KH |
462 | tem = Frassoc (pattern, Vfontset_alias_alist); |
463 | if (!NILP (tem)) | |
464 | return Fcar (tem); | |
465 | ||
4ed46869 KH |
466 | regexp = fontset_pattern_regexp (pattern); |
467 | ||
468 | for (tem = Vglobal_fontset_alist; CONSP (tem); tem = XCONS (tem)->cdr) | |
469 | { | |
470 | Lisp_Object fontset_name = XCONS (XCONS (tem)->car)->car; | |
471 | if (!NILP (regexp)) | |
472 | { | |
dacc955c RS |
473 | if (fast_c_string_match_ignore_case (regexp, |
474 | XSTRING (fontset_name)->data) | |
4ed46869 KH |
475 | >= 0) |
476 | return fontset_name; | |
477 | } | |
478 | else | |
479 | { | |
480 | if (!my_strcasecmp (XSTRING (pattern)->data, | |
481 | XSTRING (fontset_name)->data)) | |
482 | return fontset_name; | |
483 | } | |
484 | } | |
485 | ||
486 | return Qnil; | |
487 | } | |
488 | ||
489 | Lisp_Object Fframe_char_width (); | |
490 | ||
491 | /* Return a list of names of available fontsets matching PATTERN on | |
492 | frame F. If SIZE is not 0, it is the size (maximum bound width) of | |
493 | fontsets to be listed. */ | |
494 | ||
495 | Lisp_Object | |
496 | list_fontsets (f, pattern, size) | |
497 | FRAME_PTR f; | |
498 | Lisp_Object pattern; | |
499 | int size; | |
500 | { | |
501 | int i; | |
502 | Lisp_Object regexp, val; | |
503 | ||
504 | regexp = fontset_pattern_regexp (pattern); | |
505 | ||
506 | val = Qnil; | |
507 | for (i = 0; i < FRAME_FONTSET_DATA (f)->n_fontsets; i++) | |
508 | { | |
509 | struct fontset_info *fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[i]; | |
510 | int name_matched = 0; | |
511 | int size_matched = 0; | |
512 | ||
513 | if (!NILP (regexp)) | |
514 | { | |
dacc955c | 515 | if (fast_c_string_match_ignore_case (regexp, fontsetp->name) >= 0) |
4ed46869 KH |
516 | name_matched = 1; |
517 | } | |
518 | else | |
519 | { | |
520 | if (!my_strcasecmp (XSTRING (pattern)->data, fontsetp->name)) | |
521 | name_matched = 1; | |
522 | } | |
523 | ||
524 | if (name_matched) | |
525 | { | |
526 | if (!size || fontsetp->size == size) | |
527 | size_matched = 1; | |
528 | else if (fontsetp->size == 0) | |
529 | { | |
530 | /* No font of this fontset has loaded yet. Try loading | |
531 | one with SIZE. */ | |
532 | int j; | |
533 | ||
467e7675 | 534 | for (j = 0; j <= MAX_CHARSET; j++) |
4ed46869 KH |
535 | if (fontsetp->fontname[j]) |
536 | { | |
537 | if ((*load_font_func) (f, fontsetp->fontname[j], size)) | |
538 | size_matched = 1; | |
539 | break; | |
540 | } | |
541 | } | |
542 | ||
543 | if (size_matched) | |
544 | val = Fcons (build_string (fontsetp->name), val); | |
545 | } | |
546 | } | |
547 | ||
548 | return val; | |
549 | } | |
550 | ||
551 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, | |
552 | "Create a new fontset NAME which contains fonts in FONTLIST.\n\ | |
553 | FONTLIST is an alist of charsets vs corresponding font names.") | |
554 | (name, fontlist) | |
555 | Lisp_Object name, fontlist; | |
556 | { | |
557 | Lisp_Object fullname, fontset_info; | |
558 | Lisp_Object tail; | |
559 | ||
560 | (*check_window_system_func) (); | |
561 | ||
562 | CHECK_STRING (name, 0); | |
563 | CHECK_LIST (fontlist, 1); | |
564 | ||
565 | fullname = Fquery_fontset (name); | |
566 | if (!NILP (fullname)) | |
567 | error ("Fontset \"%s\" matches the existing fontset \"%s\"", | |
568 | XSTRING (name)->data, XSTRING (fullname)->data); | |
569 | ||
570 | /* Check the validity of FONTLIST. */ | |
571 | for (tail = fontlist; CONSP (tail); tail = XCONS (tail)->cdr) | |
572 | { | |
573 | Lisp_Object tem = XCONS (tail)->car; | |
574 | int charset; | |
575 | ||
576 | if (!CONSP (tem) | |
577 | || (charset = get_charset_id (XCONS (tem)->car)) < 0 | |
578 | || !STRINGP (XCONS (tem)->cdr)) | |
579 | error ("Elements of fontlist must be a cons of charset and font name"); | |
580 | } | |
581 | ||
582 | fontset_info = Fcons (name, fontlist); | |
583 | Vglobal_fontset_alist = Fcons (fontset_info, Vglobal_fontset_alist); | |
584 | ||
585 | /* Register this fontset for all existing frames. */ | |
586 | { | |
587 | Lisp_Object framelist, frame; | |
588 | ||
589 | FOR_EACH_FRAME (framelist, frame) | |
590 | if (!FRAME_TERMCAP_P (XFRAME (frame))) | |
591 | fs_register_fontset (XFRAME (frame), fontset_info); | |
592 | } | |
593 | ||
594 | return Qnil; | |
595 | } | |
596 | ||
597 | extern Lisp_Object Fframe_parameters (); | |
598 | extern Lisp_Object Qfont; | |
599 | Lisp_Object Qfontset; | |
600 | ||
601 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0, | |
602 | "Set FONTNAME for a font of CHARSET in fontset NAME on frame FRAME.\n\ | |
603 | If FRAME is omitted or nil, all frames are affected.") | |
604 | (name, charset_symbol, fontname, frame) | |
605 | Lisp_Object name, charset_symbol, fontname, frame; | |
606 | { | |
607 | int charset; | |
608 | Lisp_Object fullname, fontlist; | |
609 | ||
610 | (*check_window_system_func) (); | |
611 | ||
612 | CHECK_STRING (name, 0); | |
613 | CHECK_SYMBOL (charset_symbol, 1); | |
614 | CHECK_STRING (fontname, 2); | |
615 | if (!NILP (frame)) | |
616 | CHECK_LIVE_FRAME (frame, 3); | |
617 | ||
618 | if ((charset = get_charset_id (charset_symbol)) < 0) | |
619 | error ("Invalid charset: %s", XSYMBOL (charset_symbol)->name->data); | |
620 | ||
621 | fullname = Fquery_fontset (name); | |
622 | if (NILP (fullname)) | |
623 | error ("Fontset \"%s\" does not exist", XSTRING (name)->data); | |
624 | ||
625 | /* If FRAME is not specified, we must, at first, update contents of | |
626 | `global-fontset-alist' for a frame created in the future. */ | |
627 | if (NILP (frame)) | |
628 | { | |
629 | Lisp_Object fontset_info = Fassoc (fullname, Vglobal_fontset_alist); | |
6a7e6d80 | 630 | Lisp_Object tem = Fassq (charset_symbol, XCONS (fontset_info)->cdr); |
4ed46869 KH |
631 | |
632 | if (NILP (tem)) | |
633 | XCONS (fontset_info)->cdr | |
6a7e6d80 KH |
634 | = Fcons (Fcons (charset_symbol, fontname), |
635 | XCONS (fontset_info)->cdr); | |
4ed46869 KH |
636 | else |
637 | XCONS (tem)->cdr = fontname; | |
638 | } | |
639 | ||
640 | /* Then, update information in the specified frame or all existing | |
641 | frames. */ | |
642 | { | |
643 | Lisp_Object framelist, tem; | |
644 | ||
645 | FOR_EACH_FRAME (framelist, tem) | |
646 | if (!FRAME_TERMCAP_P (XFRAME (tem)) | |
647 | && (NILP (frame) || EQ (frame, tem))) | |
648 | { | |
649 | FRAME_PTR f = XFRAME (tem); | |
650 | int fontset = fs_query_fontset (f, XSTRING (fullname)->data); | |
651 | struct fontset_info *fontsetp | |
652 | = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
653 | ||
6a7e6d80 KH |
654 | if (fontsetp->fontname[charset]) |
655 | xfree (fontsetp->fontname[charset]); | |
656 | fontsetp->fontname[charset] | |
4ed46869 | 657 | = (char *) xmalloc (XSTRING (fontname)->size + 1); |
6a7e6d80 | 658 | bcopy (XSTRING (fontname)->data, fontsetp->fontname[charset], |
4ed46869 | 659 | XSTRING (fontname)->size + 1); |
6a7e6d80 | 660 | fontsetp->font_indexes[charset] = FONT_NOT_OPENED; |
4ed46869 KH |
661 | |
662 | if (charset == CHARSET_ASCII) | |
663 | { | |
664 | Lisp_Object font_param = Fassq (Qfont, Fframe_parameters (tem)); | |
665 | ||
666 | if (set_frame_fontset_func | |
667 | && !NILP (font_param) | |
668 | && !strcmp (XSTRING (fullname)->data, | |
669 | XSTRING (XCONS (font_param)->cdr)->data)) | |
670 | /* This fontset is the default fontset on frame TEM. | |
671 | We may have to resize this frame because of new | |
672 | ASCII font. */ | |
673 | (*set_frame_fontset_func) (f, fullname, Qnil); | |
674 | } | |
675 | } | |
676 | } | |
677 | ||
678 | return Qnil; | |
679 | } | |
680 | ||
681 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, | |
682 | "Return information about a font named NAME on frame FRAME.\n\ | |
683 | If FRAME is omitted or nil, use the selected frame.\n\ | |
684 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE,\n\ | |
6a7e6d80 | 685 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT,\n\ |
4ed46869 KH |
686 | where\n\ |
687 | OPENED-NAME is the name used for opening the font,\n\ | |
688 | FULL-NAME is the full name of the font,\n\ | |
689 | CHARSET is the charset displayed by the font,\n\ | |
690 | SIZE is the minimum bound width of the font,\n\ | |
691 | HEIGHT is the height of the font,\n\ | |
692 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline,\n\ | |
6a7e6d80 KH |
693 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling\n\ |
694 | how to compose characters.\n\ | |
4ed46869 KH |
695 | If the named font is not yet loaded, return nil.") |
696 | (name, frame) | |
697 | Lisp_Object name, frame; | |
698 | { | |
699 | FRAME_PTR f; | |
700 | struct font_info *fontp; | |
701 | Lisp_Object info; | |
702 | ||
703 | (*check_window_system_func) (); | |
704 | ||
705 | CHECK_STRING (name, 0); | |
706 | if (NILP (frame)) | |
707 | f = selected_frame; | |
708 | else | |
709 | { | |
710 | CHECK_LIVE_FRAME (frame, 1); | |
711 | f = XFRAME (frame); | |
712 | } | |
713 | ||
714 | if (!query_font_func) | |
715 | error ("Font query function is not supported"); | |
716 | ||
717 | fontp = (*query_font_func) (f, XSTRING (name)->data); | |
718 | if (!fontp) | |
719 | return Qnil; | |
720 | ||
e397ee41 | 721 | info = Fmake_vector (make_number (8), Qnil); |
4ed46869 KH |
722 | |
723 | XVECTOR (info)->contents[0] = build_string (fontp->name); | |
724 | XVECTOR (info)->contents[1] = build_string (fontp->full_name); | |
725 | XVECTOR (info)->contents[2] = CHARSET_SYMBOL (fontp->charset); | |
726 | XVECTOR (info)->contents[3] = make_number (fontp->size); | |
727 | XVECTOR (info)->contents[4] = make_number (fontp->height); | |
728 | XVECTOR (info)->contents[5] = make_number (fontp->baseline_offset); | |
729 | XVECTOR (info)->contents[6] = make_number (fontp->relative_compose); | |
6a7e6d80 | 730 | XVECTOR (info)->contents[7] = make_number (fontp->default_ascent); |
4ed46869 KH |
731 | |
732 | return info; | |
733 | } | |
734 | ||
735 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, | |
736 | "Return information about a fontset named NAME on frame FRAME.\n\ | |
737 | If FRAME is omitted or nil, use the selected frame.\n\ | |
738 | The returned value is a vector of SIZE, HEIGHT, and FONT-LIST,\n\ | |
739 | where\n\ | |
740 | SIZE is the minimum bound width of ASCII font of the fontset,\n\ | |
741 | HEIGHT is the height of the tallest font in the fontset, and\n\ | |
742 | FONT-LIST is an alist of the format:\n\ | |
743 | (CHARSET REQUESTED-FONT-NAME LOADED-FONT-NAME).\n\ | |
744 | LOADED-FONT-NAME t means the font is not yet loaded, nil means the\n\ | |
745 | loading failed.") | |
746 | (name, frame) | |
747 | Lisp_Object name, frame; | |
748 | { | |
749 | FRAME_PTR f; | |
750 | int fontset; | |
751 | struct fontset_info *fontsetp; | |
752 | Lisp_Object info, val; | |
753 | int i; | |
754 | ||
755 | (*check_window_system_func) (); | |
756 | ||
757 | CHECK_STRING(name, 0); | |
758 | if (NILP (frame)) | |
759 | f = selected_frame; | |
760 | else | |
761 | { | |
762 | CHECK_LIVE_FRAME (frame, 1); | |
763 | f = XFRAME (frame); | |
764 | } | |
765 | ||
766 | fontset = fs_query_fontset (f, XSTRING (name)->data); | |
767 | if (fontset < 0) | |
768 | error ("Fontset \"%s\" does not exist", XSTRING (name)->data); | |
769 | ||
770 | info = Fmake_vector (make_number (3), Qnil); | |
771 | ||
772 | fontsetp = FRAME_FONTSET_DATA (f)->fontset_table[fontset]; | |
773 | ||
774 | XVECTOR (info)->contents[0] = make_number (fontsetp->size); | |
775 | XVECTOR (info)->contents[1] = make_number (fontsetp->height); | |
776 | val = Qnil; | |
467e7675 | 777 | for (i = 0; i <= MAX_CHARSET; i++) |
4ed46869 KH |
778 | if (fontsetp->fontname[i]) |
779 | { | |
780 | int font_idx = fontsetp->font_indexes[i]; | |
781 | Lisp_Object loaded; | |
782 | ||
783 | if (font_idx == FONT_NOT_OPENED) | |
784 | loaded = Qt; | |
785 | else if (font_idx == FONT_NOT_FOUND) | |
786 | loaded = Qnil; | |
787 | else | |
788 | loaded | |
789 | = build_string ((*get_font_info_func) (f, font_idx)->full_name); | |
790 | val = Fcons (Fcons (CHARSET_SYMBOL (i), | |
791 | Fcons (build_string (fontsetp->fontname[i]), | |
792 | Fcons (loaded, Qnil))), | |
793 | val); | |
794 | } | |
795 | XVECTOR (info)->contents[2] = val; | |
796 | return info; | |
797 | } | |
798 | ||
799 | syms_of_fontset () | |
800 | { | |
801 | int i; | |
802 | ||
803 | for (i = 0; i < 256; i++) | |
804 | my_strcasetbl[i] = (i >= 'A' && i <= 'Z') ? i + 'a' - 'A' : i; | |
805 | ||
806 | if (!load_font_func) | |
807 | /* Window system initializer should have set proper functions. */ | |
808 | abort (); | |
809 | ||
6a7e6d80 | 810 | Qfontset = intern ("fontset"); |
4ed46869 KH |
811 | staticpro (&Qfontset); |
812 | ||
813 | Vcached_fontset_data = Qnil; | |
814 | staticpro (&Vcached_fontset_data); | |
815 | ||
816 | DEFVAR_LISP ("global-fontset-alist", &Vglobal_fontset_alist, | |
817 | "Internal data for fontset. Not for external use.\n\ | |
818 | This is an alist associating fontset names with the lists of fonts\n\ | |
819 | contained in them.\n\ | |
820 | Newly created frames make their own fontset database from here."); | |
821 | Vglobal_fontset_alist = Qnil; | |
822 | ||
823 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, | |
824 | "Alist of fontname patterns vs corresponding encoding info.\n\ | |
825 | Each element looks like (REGEXP . ENCODING-INFO),\n\ | |
826 | where ENCODING-INFO is an alist of CHARSET vs ENCODING.\n\ | |
827 | ENCODING is one of the following integer values:\n\ | |
828 | 0: code points 0x20..0x7F or 0x2020..0x7F7F are used,\n\ | |
829 | 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used,\n\ | |
830 | 2: code points 0x20A0..0x7FFF are used,\n\ | |
831 | 3: code points 0xA020..0xFF7F are used."); | |
832 | Vfont_encoding_alist = Qnil; | |
833 | ||
6a7e6d80 KH |
834 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
835 | "Char table of characters of which ascent values should be ignored.\n\ | |
836 | If an entry for a character is non-nil, the ascent value of the glyph\n\ | |
837 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font."); | |
838 | Vuse_default_ascent = Qnil; | |
839 | ||
8c83e4f9 | 840 | DEFVAR_LISP ("alternative-fontname-alist", &Valternative_fontname_alist, |
1c283e35 KH |
841 | "Alist of fontname vs list of the alternative fontnames.\n\ |
842 | When no font can be opened by a fontname, the corresponding\n\ | |
8c83e4f9 KH |
843 | alternative fontnames are tried."); |
844 | Valternative_fontname_alist = Qnil; | |
845 | ||
1c283e35 KH |
846 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
847 | "Alist of fontset names vs the aliases."); | |
848 | Vfontset_alias_alist = Qnil; | |
849 | ||
ec3bb068 KH |
850 | DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font, |
851 | "*Non-nil means highlight characters shown in wrong size fonts somehow.\n\ | |
852 | The way to highlight them depends on window system on which Emacs runs.\n\ | |
1c283e35 | 853 | On X window, a rectangle is shown around each such character."); |
e3ee2a8a | 854 | Vhighlight_wrong_size_font = Qnil; |
ec3bb068 KH |
855 | |
856 | DEFVAR_LISP ("clip-large-size-font", &Vclip_large_size_font, | |
1c283e35 KH |
857 | "*Non-nil means characters shown in large size fonts are clipped.\n\ |
858 | The height of clipping area is the same as that of an ASCII character.\n\ | |
859 | The width of the area is the same as that of an ASCII character or\n\ | |
860 | twice wider than that of an ASCII character depending on\n\ | |
861 | the width (i.e. column numbers occupied on screen) of the character set\n\ | |
862 | of the character.\n\ | |
863 | \n\ | |
864 | In the case that you only have too large size font for a specific\n\ | |
865 | charscter set, and clipping characters of the character set makes them\n\ | |
866 | almost unreadable, you can set this variable to t to see the\n\ | |
867 | characters in exchage for garbage dots left on your screen."); | |
ec3bb068 KH |
868 | Vclip_large_size_font = Qt; |
869 | ||
4ed46869 KH |
870 | defsubr (&Squery_fontset); |
871 | defsubr (&Snew_fontset); | |
872 | defsubr (&Sset_fontset_font); | |
873 | defsubr (&Sfont_info); | |
874 | defsubr (&Sfontset_info); | |
875 | } |