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4ed46869 | 1 | /* Fontset handler. |
0d407d77 | 2 | Copyright (C) 1995, 1997, 2000 Electrotechnical Laboratory, JAPAN. |
75c8c592 | 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 | 21 | |
0d407d77 KH |
22 | /* #define FONTSET_DEBUG */ |
23 | ||
4ed46869 | 24 | #include <config.h> |
0d407d77 KH |
25 | |
26 | #ifdef FONTSET_DEBUG | |
27 | #include <stdio.h> | |
28 | #endif | |
29 | ||
4ed46869 KH |
30 | #include "lisp.h" |
31 | #include "charset.h" | |
32 | #include "ccl.h" | |
4ed46869 | 33 | #include "frame.h" |
0d407d77 | 34 | #include "dispextern.h" |
3541bb8f | 35 | #include "fontset.h" |
0d407d77 KH |
36 | #include "window.h" |
37 | ||
38 | #ifdef FONTSET_DEBUG | |
39 | #undef xassert | |
40 | #define xassert(X) do {if (!(X)) abort ();} while (0) | |
41 | #undef INLINE | |
42 | #define INLINE | |
43 | #endif | |
44 | ||
45 | ||
46 | /* FONTSET | |
47 | ||
48 | A fontset is a collection of font related information to give | |
49 | similar appearance (style, size, etc) of characters. There are two | |
50 | kinds of fontsets; base and realized. A base fontset is created by | |
51 | new-fontset from Emacs Lisp explicitly. A realized fontset is | |
52 | created implicitly when a face is realized for ASCII characters. A | |
53 | face is also realized for multibyte characters based on an ASCII | |
54 | face. All of the multibyte faces based on the same ASCII face | |
55 | share the same realized fontset. | |
56 | ||
57 | A fontset object is implemented by a char-table. | |
58 | ||
59 | An element of a base fontset is: | |
60 | (INDEX . FONTNAME) or | |
61 | (INDEX . (FOUNDRY . REGISTRY )) | |
62 | FONTNAME is a font name pattern for the corresponding character. | |
63 | FOUNDRY and REGISTRY are respectively foundy and regisry fields of | |
64 | a font name for the corresponding character. INDEX specifies for | |
65 | which character (or generic character) the element is defined. It | |
66 | may be different from an index to access this element. For | |
67 | instance, if a fontset defines some font for all characters of | |
68 | charset `japanese-jisx0208', INDEX is the generic character of this | |
69 | charset. REGISTRY is the | |
70 | ||
71 | An element of a realized fontset is FACE-ID which is a face to use | |
72 | for displaying the correspnding character. | |
73 | ||
74 | All single byte charaters (ASCII and 8bit-unibyte) share the same | |
75 | element in a fontset. The element is stored in `defalt' slot of | |
76 | the fontset. And this slot is never used as a default value of | |
77 | multibyte characters. That means that the first 256 elements of a | |
78 | fontset set is always nil (as this is not efficient, we may | |
79 | implement a fontset in a different way in the future). | |
80 | ||
81 | To access or set each element, use macros FONTSET_REF and | |
82 | FONTSET_SET respectively for efficiency. | |
83 | ||
84 | A fontset has 3 extra slots. | |
85 | ||
86 | The 1st slot is an ID number of the fontset. | |
87 | ||
88 | The 2nd slot is a name of the fontset. This is nil for a realized | |
89 | face. | |
90 | ||
91 | The 3rd slot is a frame that the fontset belongs to. This is nil | |
92 | for a default face. | |
93 | ||
94 | A parent of a base fontset is nil. A parent of a realized fontset | |
95 | is a base fontset. | |
96 | ||
97 | All fontsets (except for the default fontset described below) are | |
98 | recorded in Vfontset_table. | |
99 | ||
100 | ||
101 | DEFAULT FONTSET | |
102 | ||
103 | There's a special fontset named `default fontset' which defines a | |
104 | default fontname that contains only REGISTRY field for each | |
105 | character. When a base fontset doesn't specify a font for a | |
106 | specific character, the corresponding value in the default fontset | |
107 | is used. The format is the same as a base fontset. | |
108 | ||
109 | The parent of realized fontsets created for faces that have no | |
110 | fontset is the default fontset. | |
111 | ||
112 | ||
113 | These structures are hidden from the other codes than this file. | |
114 | The other codes handle fontsets only by their ID numbers. They | |
115 | usually use variable name `fontset' for IDs. But, in this file, we | |
116 | always use varialbe name `id' for IDs, and name `fontset' for the | |
117 | actual fontset objects. | |
118 | ||
119 | */ | |
120 | ||
121 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ | |
122 | ||
123 | extern Lisp_Object Qfont; | |
124 | Lisp_Object Qfontset; | |
125 | ||
126 | /* Vector containing all fontsets. */ | |
127 | static Lisp_Object Vfontset_table; | |
128 | ||
129 | /* Next possibly free fontset ID. Usually this keeps the mininum | |
130 | fontset ID not yet used. */ | |
131 | static int next_fontset_id; | |
132 | ||
133 | /* The default fontset. This gives default FAMILY and REGISTRY of | |
134 | font for each characters. */ | |
135 | static Lisp_Object Vdefault_fontset; | |
4ed46869 | 136 | |
4ed46869 | 137 | Lisp_Object Vfont_encoding_alist; |
6a7e6d80 | 138 | Lisp_Object Vuse_default_ascent; |
2aeafb78 | 139 | Lisp_Object Vignore_relative_composition; |
01d4b817 | 140 | Lisp_Object Valternate_fontname_alist; |
1c283e35 | 141 | Lisp_Object Vfontset_alias_alist; |
ec3bb068 KH |
142 | Lisp_Object Vhighlight_wrong_size_font; |
143 | Lisp_Object Vclip_large_size_font; | |
810abb87 | 144 | Lisp_Object Vvertical_centering_font_regexp; |
4ed46869 | 145 | |
0d407d77 KH |
146 | /* The following six are declarations of callback functions depending |
147 | on window system. See the comments in src/fontset.h for more | |
148 | detail. */ | |
4ed46869 KH |
149 | |
150 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ | |
5771dcf4 | 151 | struct font_info *(*get_font_info_func) P_ ((FRAME_PTR f, int font_idx)); |
4ed46869 KH |
152 | |
153 | /* Return a list of font names which matches PATTERN. See the document of | |
154 | `x-list-fonts' for more detail. */ | |
3541bb8f KH |
155 | Lisp_Object (*list_fonts_func) P_ ((struct frame *f, |
156 | Lisp_Object pattern, | |
157 | int size, | |
158 | int maxnames)); | |
4ed46869 KH |
159 | |
160 | /* Load a font named NAME for frame F and return a pointer to the | |
161 | information of the loaded font. If loading is failed, return 0. */ | |
5771dcf4 | 162 | struct font_info *(*load_font_func) P_ ((FRAME_PTR f, char *name, int)); |
4ed46869 KH |
163 | |
164 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ | |
5771dcf4 | 165 | struct font_info *(*query_font_func) P_ ((FRAME_PTR f, char *name)); |
4ed46869 KH |
166 | |
167 | /* Additional function for setting fontset or changing fontset | |
168 | contents of frame F. */ | |
5771dcf4 AS |
169 | void (*set_frame_fontset_func) P_ ((FRAME_PTR f, Lisp_Object arg, |
170 | Lisp_Object oldval)); | |
4ed46869 | 171 | |
727fb790 KH |
172 | /* To find a CCL program, fs_load_font calls this function. |
173 | The argument is a pointer to the struct font_info. | |
174 | This function set the memer `encoder' of the structure. */ | |
175 | void (*find_ccl_program_func) P_ ((struct font_info *)); | |
176 | ||
4ed46869 | 177 | /* Check if any window system is used now. */ |
5771dcf4 | 178 | void (*check_window_system_func) P_ ((void)); |
4ed46869 | 179 | |
0d407d77 KH |
180 | |
181 | /* Prototype declarations for static functions. */ | |
182 | static Lisp_Object fontset_ref P_ ((Lisp_Object, int)); | |
183 | static void fontset_set P_ ((Lisp_Object, int, Lisp_Object)); | |
184 | static Lisp_Object make_fontset P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); | |
185 | static int fontset_id_valid_p P_ ((int)); | |
186 | static Lisp_Object fontset_pattern_regexp P_ ((Lisp_Object)); | |
187 | static Lisp_Object font_family_registry P_ ((Lisp_Object)); | |
188 | ||
189 | \f | |
190 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ | |
191 | ||
192 | /* Macros for Lisp vector. */ | |
193 | #define AREF(V, IDX) XVECTOR (V)->contents[IDX] | |
194 | #define ASIZE(V) XVECTOR (V)->size | |
195 | ||
196 | /* Return the fontset with ID. No check of ID's validness. */ | |
197 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) | |
198 | ||
199 | /* Macros to access extra, default, and parent slots, of fontset. */ | |
200 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] | |
201 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] | |
202 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[2] | |
203 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->defalt | |
204 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->parent | |
205 | ||
206 | #define BASE_FONTSET_P(fontset) NILP (FONTSET_BASE(fontset)) | |
207 | ||
208 | ||
209 | /* Return the element of FONTSET (char-table) at index C (character). */ | |
210 | ||
211 | #define FONTSET_REF(fontset, c) fontset_ref (fontset, c) | |
212 | ||
213 | static INLINE Lisp_Object | |
214 | fontset_ref (fontset, c) | |
215 | Lisp_Object fontset; | |
216 | int c; | |
217 | { | |
218 | int charset, c1, c2; | |
219 | Lisp_Object elt, defalt; | |
220 | int i; | |
221 | ||
222 | if (SINGLE_BYTE_CHAR_P (c)) | |
223 | return FONTSET_ASCII (fontset); | |
224 | ||
225 | SPLIT_NON_ASCII_CHAR (c, charset, c1, c2); | |
226 | elt = XCHAR_TABLE (fontset)->contents[charset + 128]; | |
227 | if (!SUB_CHAR_TABLE_P (elt)) | |
228 | return elt; | |
229 | defalt = XCHAR_TABLE (elt)->defalt; | |
230 | if (c1 < 32 | |
231 | || (elt = XCHAR_TABLE (elt)->contents[c1], | |
232 | NILP (elt))) | |
233 | return defalt; | |
234 | if (!SUB_CHAR_TABLE_P (elt)) | |
235 | return elt; | |
236 | defalt = XCHAR_TABLE (elt)->defalt; | |
237 | if (c2 < 32 | |
238 | || (elt = XCHAR_TABLE (elt)->contents[c2], | |
239 | NILP (elt))) | |
240 | return defalt; | |
241 | return elt; | |
242 | } | |
243 | ||
244 | ||
245 | #define FONTSET_REF_VIA_BASE(fontset, c) fontset_ref_via_base (fontset, &c) | |
246 | ||
247 | static INLINE Lisp_Object | |
248 | fontset_ref_via_base (fontset, c) | |
249 | Lisp_Object fontset; | |
250 | int *c; | |
251 | { | |
252 | int charset, c1, c2; | |
253 | Lisp_Object elt; | |
254 | int i; | |
255 | ||
256 | if (SINGLE_BYTE_CHAR_P (*c)) | |
257 | return FONTSET_ASCII (fontset); | |
258 | ||
259 | elt = FONTSET_REF (FONTSET_BASE (fontset), *c); | |
260 | if (NILP (elt)) | |
261 | return Qnil; | |
262 | ||
263 | *c = XINT (XCAR (elt)); | |
264 | SPLIT_NON_ASCII_CHAR (*c, charset, c1, c2); | |
265 | elt = XCHAR_TABLE (fontset)->contents[charset + 128]; | |
266 | if (c1 < 32) | |
267 | return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt); | |
268 | if (!SUB_CHAR_TABLE_P (elt)) | |
269 | return Qnil; | |
270 | elt = XCHAR_TABLE (elt)->contents[c1]; | |
271 | if (c2 < 32) | |
272 | return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt); | |
273 | if (!SUB_CHAR_TABLE_P (elt)) | |
274 | return Qnil; | |
275 | elt = XCHAR_TABLE (elt)->contents[c2]; | |
276 | return elt; | |
277 | } | |
278 | ||
279 | ||
280 | /* Store into the element of FONTSET at index C the value NEWETL. */ | |
281 | #define FONTSET_SET(fontset, c, newelt) fontset_set(fontset, c, newelt) | |
282 | ||
283 | static void | |
284 | fontset_set (fontset, c, newelt) | |
285 | Lisp_Object fontset; | |
286 | int c; | |
287 | Lisp_Object newelt; | |
288 | { | |
289 | int charset, code[3]; | |
290 | Lisp_Object *elt, tmp; | |
291 | int i, j; | |
292 | ||
293 | if (SINGLE_BYTE_CHAR_P (c)) | |
294 | { | |
295 | FONTSET_ASCII (fontset) = newelt; | |
296 | return; | |
297 | } | |
298 | ||
299 | SPLIT_NON_ASCII_CHAR (c, charset, code[0], code[1]); | |
300 | code[2] = 0; /* anchor */ | |
301 | elt = &XCHAR_TABLE (fontset)->contents[charset + 128]; | |
302 | for (i = 0; code[i] > 0; i++) | |
303 | { | |
304 | if (!SUB_CHAR_TABLE_P (*elt)) | |
305 | *elt = make_sub_char_table (*elt); | |
306 | elt = &XCHAR_TABLE (*elt)->contents[code[i]]; | |
307 | } | |
308 | if (SUB_CHAR_TABLE_P (*elt)) | |
309 | XCHAR_TABLE (*elt)->defalt = newelt; | |
310 | else | |
311 | *elt = newelt; | |
312 | } | |
313 | ||
314 | ||
315 | /* Return a newly created fontset with NAME. If BASE is nil, make a | |
316 | base fontset. Otherwise make a realized fontset whose parent is | |
317 | BASE. */ | |
318 | ||
319 | static Lisp_Object | |
320 | make_fontset (frame, name, base) | |
321 | Lisp_Object frame, name, base; | |
4ed46869 | 322 | { |
0d407d77 KH |
323 | Lisp_Object fontset, elt, base_elt; |
324 | int size = ASIZE (Vfontset_table); | |
325 | int id = next_fontset_id; | |
326 | int i, j; | |
327 | ||
328 | /* Find a free slot in Vfontset_table. Usually, next_fontset_id is | |
329 | the next available fontset ID. So it is expected that this loop | |
330 | terminates quickly. In addition, as the last element of | |
331 | Vfotnset_table is always nil, we don't have to check the range of | |
332 | id. */ | |
333 | while (!NILP (AREF (Vfontset_table, id))) id++; | |
334 | ||
335 | if (id + 1 == size) | |
336 | { | |
337 | Lisp_Object tem; | |
338 | int i; | |
4ed46869 | 339 | |
0d407d77 KH |
340 | tem = Fmake_vector (make_number (size + 8), Qnil); |
341 | for (i = 0; i < size; i++) | |
342 | AREF (tem, i) = AREF (Vfontset_table, i); | |
343 | Vfontset_table = tem; | |
344 | } | |
4ed46869 | 345 | |
0d407d77 KH |
346 | if (NILP (base)) |
347 | fontset = Fcopy_sequence (Vdefault_fontset); | |
348 | else | |
349 | fontset = Fmake_char_table (Qfontset, Qnil); | |
350 | ||
351 | FONTSET_ID (fontset) = make_number (id); | |
352 | FONTSET_NAME (fontset) = name; | |
353 | FONTSET_FRAME (fontset) = frame; | |
354 | FONTSET_BASE (fontset) = base; | |
355 | ||
356 | AREF (Vfontset_table, id) = fontset; | |
357 | next_fontset_id = id + 1; | |
358 | return fontset; | |
4ed46869 KH |
359 | } |
360 | ||
0d407d77 KH |
361 | |
362 | /* Return 1 if ID is a valid fontset id, else return 0. */ | |
363 | ||
364 | static INLINE int | |
365 | fontset_id_valid_p (id) | |
366 | int id; | |
367 | { | |
368 | return (id >= 0 && id < ASIZE (Vfontset_table) - 1); | |
369 | } | |
370 | ||
371 | ||
372 | /* Extract `family' and `registry' string from FONTNAME and set in | |
373 | *FAMILY and *REGISTRY respectively. Actually, `family' may also | |
374 | contain `foundry', `registry' may also contain `encoding' of | |
375 | FONTNAME. */ | |
376 | ||
377 | static Lisp_Object | |
378 | font_family_registry (fontname) | |
379 | Lisp_Object fontname; | |
380 | { | |
381 | Lisp_Object family, registry; | |
382 | char *p = XSTRING (fontname)->data; | |
383 | char *sep[15]; | |
384 | int i = 0; | |
385 | ||
386 | while (*p && i < 15) if (*p++ == '-') sep[i++] = p; | |
387 | if (i != 14) | |
388 | return fontname; | |
389 | ||
390 | family = make_unibyte_string (sep[0], sep[2] - 1 - sep[0]); | |
391 | registry = make_unibyte_string (sep[12], p - sep[12]); | |
392 | return Fcons (family, registry); | |
393 | } | |
394 | ||
395 | \f | |
396 | /********** INTERFACES TO xfaces.c and dispextern.h **********/ | |
397 | ||
398 | /* Return name of the fontset with ID. */ | |
399 | ||
400 | Lisp_Object | |
401 | fontset_name (id) | |
402 | int id; | |
403 | { | |
404 | Lisp_Object fontset; | |
405 | fontset = FONTSET_FROM_ID (id); | |
406 | return FONTSET_NAME (fontset); | |
407 | } | |
408 | ||
409 | ||
410 | /* Return ASCII font name of the fontset with ID. */ | |
411 | ||
412 | Lisp_Object | |
413 | fontset_ascii (id) | |
414 | int id; | |
415 | { | |
416 | Lisp_Object fontset, elt; | |
417 | fontset= FONTSET_FROM_ID (id); | |
418 | elt = FONTSET_ASCII (fontset); | |
419 | return XCDR (elt); | |
420 | } | |
421 | ||
422 | ||
423 | /* Free fontset of FACE. Called from free_realized_face. */ | |
424 | ||
4ed46869 | 425 | void |
0d407d77 KH |
426 | free_face_fontset (f, face) |
427 | FRAME_PTR f; | |
428 | struct face *face; | |
4ed46869 | 429 | { |
0d407d77 | 430 | if (fontset_id_valid_p (face->fontset)) |
4ed46869 | 431 | { |
0d407d77 KH |
432 | AREF (Vfontset_table, face->fontset) = Qnil; |
433 | if (face->fontset < next_fontset_id) | |
434 | next_fontset_id = face->fontset; | |
435 | } | |
436 | } | |
18998710 | 437 | |
0d407d77 KH |
438 | |
439 | /* Return 1 iff FACE is suitable for displaying character C. | |
440 | Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P | |
441 | when C is not a single byte character.. */ | |
442 | ||
443 | int | |
444 | face_suitable_for_char_p (face, c) | |
445 | struct face *face; | |
446 | int c; | |
447 | { | |
448 | Lisp_Object fontset, elt; | |
449 | ||
450 | if (SINGLE_BYTE_CHAR_P (c)) | |
451 | return (face == face->ascii_face); | |
452 | ||
453 | xassert (fontset_id_valid_p (face->fontset)); | |
454 | fontset = FONTSET_FROM_ID (face->fontset); | |
455 | xassert (!BASE_FONTSET_P (fontset)); | |
456 | ||
457 | elt = FONTSET_REF_VIA_BASE (fontset, c); | |
458 | return (!NILP (elt) && face->id == XFASTINT (elt)); | |
459 | } | |
460 | ||
461 | ||
462 | /* Return ID of face suitable for displaying character C on frame F. | |
463 | The selection of face is done based on the fontset of FACE. FACE | |
464 | should already have been realized for ASCII characters. Called | |
465 | from the macro FACE_FOR_CHAR when C is not a single byte character. */ | |
466 | ||
467 | int | |
468 | face_for_char (f, face, c) | |
469 | FRAME_PTR f; | |
470 | struct face *face; | |
471 | int c; | |
472 | { | |
473 | Lisp_Object fontset, elt; | |
474 | int face_id; | |
475 | ||
476 | xassert (fontset_id_valid_p (face->fontset)); | |
477 | fontset = FONTSET_FROM_ID (face->fontset); | |
478 | xassert (!BASE_FONTSET_P (fontset)); | |
479 | ||
480 | elt = FONTSET_REF_VIA_BASE (fontset, c); | |
481 | if (!NILP (elt)) | |
482 | return XINT (elt); | |
483 | ||
484 | /* No face is recorded for C in the fontset of FACE. Make a new | |
485 | realized face for C that has the same fontset. */ | |
486 | face_id = lookup_face (f, face->lface, c, face); | |
487 | ||
488 | /* Record the face ID in FONTSET at the same index as the | |
489 | information in the base fontset. */ | |
490 | FONTSET_SET (fontset, c, make_number (face_id)); | |
491 | return face_id; | |
492 | } | |
493 | ||
494 | ||
495 | /* Make a realized fontset for ASCII face FACE on frame F from the | |
496 | base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the | |
497 | default fontset as the base. Value is the id of the new fontset. | |
498 | Called from realize_x_face. */ | |
499 | ||
500 | int | |
501 | make_fontset_for_ascii_face (f, base_fontset_id) | |
502 | FRAME_PTR f; | |
503 | int base_fontset_id; | |
504 | { | |
505 | Lisp_Object base_fontset, fontset, name, frame; | |
506 | ||
507 | XSETFRAME (frame, f); | |
508 | if (base_fontset_id >= 0) | |
509 | { | |
510 | base_fontset = FONTSET_FROM_ID (base_fontset_id); | |
511 | if (!BASE_FONTSET_P (base_fontset)) | |
512 | base_fontset = FONTSET_BASE (base_fontset); | |
513 | xassert (BASE_FONTSET_P (base_fontset)); | |
4ed46869 | 514 | } |
0d407d77 KH |
515 | else |
516 | base_fontset = Vdefault_fontset; | |
517 | ||
518 | fontset = make_fontset (frame, Qnil, base_fontset); | |
519 | return FONTSET_ID (fontset); | |
520 | } | |
521 | ||
522 | ||
523 | /* Return the font name pattern for C that is recorded in the fontset | |
524 | with ID. A font is opened by that pattern to get the fullname. If | |
525 | the fullname conform to XLFD, extract foundry-family field and | |
526 | registry-encoding field, and return the cons of them. Otherwise | |
527 | return the fullname. If ID is -1, or the fontset doesn't contain | |
528 | information about C, get the registry and encoding of C from the | |
529 | default fontset. Called from choose_face_font. */ | |
530 | ||
531 | Lisp_Object | |
532 | fontset_font_pattern (f, id, c) | |
533 | FRAME_PTR f; | |
534 | int id, c; | |
535 | { | |
536 | Lisp_Object fontset, elt; | |
537 | struct font_info *fontp; | |
538 | Lisp_Object family_registry; | |
539 | ||
540 | elt = Qnil; | |
541 | if (fontset_id_valid_p (id)) | |
542 | { | |
543 | fontset = FONTSET_FROM_ID (id); | |
544 | xassert (!BASE_FONTSET_P (fontset)); | |
545 | fontset = FONTSET_BASE (fontset); | |
546 | elt = FONTSET_REF (fontset, c); | |
547 | } | |
548 | else | |
549 | elt = FONTSET_REF (Vdefault_fontset, c); | |
550 | ||
551 | if (!CONSP (elt)) | |
552 | return Qnil; | |
553 | if (CONSP (XCDR (elt))) | |
554 | return XCDR (elt); | |
555 | ||
556 | /* The fontset specifies only a font name pattern (not cons of | |
557 | family and registry). Try to open a font by that pattern and get | |
558 | a registry from the full name of the opened font. We ignore | |
559 | family name here because it should be wild card in the fontset | |
560 | specification. */ | |
561 | elt = XCDR (elt); | |
562 | xassert (STRINGP (elt)); | |
563 | fontp = FS_LOAD_FONT (f, c, XSTRING (elt)->data, -1); | |
564 | if (!fontp) | |
565 | return Qnil; | |
4ed46869 | 566 | |
0d407d77 KH |
567 | family_registry = font_family_registry (build_string (fontp->full_name)); |
568 | if (!CONSP (family_registry)) | |
569 | return family_registry; | |
570 | XCAR (family_registry) = Qnil; | |
571 | return family_registry; | |
4ed46869 KH |
572 | } |
573 | ||
d5e7d534 | 574 | |
0d407d77 KH |
575 | /* Load a font named FONTNAME to display character C on frame F. |
576 | Return a pointer to the struct font_info of the loaded font. If | |
577 | loading fails, return NULL. If FACE is non-zero and a fontset is | |
578 | assigned to it, record FACE->id in the fontset for C. If FONTNAME | |
579 | is NULL, the name is taken from the fontset of FACE or what | |
580 | specified by ID. */ | |
4ed46869 KH |
581 | |
582 | struct font_info * | |
0d407d77 | 583 | fs_load_font (f, c, fontname, id, face) |
4ed46869 | 584 | FRAME_PTR f; |
0d407d77 | 585 | int c; |
4ed46869 | 586 | char *fontname; |
0d407d77 KH |
587 | int id; |
588 | struct face *face; | |
4ed46869 | 589 | { |
0d407d77 | 590 | Lisp_Object fontset; |
4ed46869 KH |
591 | Lisp_Object list, elt; |
592 | int font_idx; | |
593 | int size = 0; | |
4ed46869 | 594 | struct font_info *fontp; |
0d407d77 KH |
595 | int charset = CHAR_CHARSET (c); |
596 | ||
597 | if (face) | |
598 | id = face->fontset; | |
599 | if (id < 0) | |
600 | fontset = Qnil; | |
601 | else | |
602 | fontset = FONTSET_FROM_ID (id); | |
4ed46869 | 603 | |
0d407d77 KH |
604 | if (!NILP (fontset) |
605 | && !BASE_FONTSET_P (fontset)) | |
4ed46869 | 606 | { |
0d407d77 KH |
607 | elt = FONTSET_REF_VIA_BASE (fontset, c); |
608 | if (!NILP (elt)) | |
609 | { | |
610 | /* A suitable face for C is already recorded, which means | |
611 | that a proper font is already loaded. */ | |
612 | int face_id = XINT (elt); | |
4ed46869 | 613 | |
0d407d77 KH |
614 | xassert (face_id == face->id); |
615 | face = FACE_FROM_ID (f, face_id); | |
616 | return (*get_font_info_func) (f, face->font_info_id); | |
617 | } | |
4ed46869 | 618 | |
0d407d77 | 619 | if (!fontname && charset == CHARSET_ASCII) |
afbee0fa | 620 | { |
0d407d77 KH |
621 | elt = FONTSET_ASCII (fontset); |
622 | fontname = XSTRING (XCDR (elt))->data; | |
afbee0fa | 623 | } |
afbee0fa | 624 | } |
4ed46869 | 625 | |
0d407d77 KH |
626 | if (!fontname) |
627 | /* No way to get fontname. */ | |
628 | return 0; | |
4ed46869 | 629 | |
0d407d77 | 630 | fontp = (*load_font_func) (f, fontname, size); |
4ed46869 | 631 | if (!fontp) |
0d407d77 | 632 | return 0; |
4ed46869 | 633 | |
0d407d77 KH |
634 | /* Fill in members (charset, vertical_centering, encoding, etc) of |
635 | font_info structure that are not set by (*load_font_func). */ | |
4ed46869 KH |
636 | fontp->charset = charset; |
637 | ||
810abb87 KH |
638 | fontp->vertical_centering |
639 | = (STRINGP (Vvertical_centering_font_regexp) | |
640 | && (fast_c_string_match_ignore_case | |
641 | (Vvertical_centering_font_regexp, fontp->full_name) >= 0)); | |
642 | ||
afbee0fa | 643 | if (fontp->encoding[1] != FONT_ENCODING_NOT_DECIDED) |
4ed46869 KH |
644 | { |
645 | /* The font itself tells which code points to be used. Use this | |
646 | encoding for all other charsets. */ | |
647 | int i; | |
648 | ||
649 | fontp->encoding[0] = fontp->encoding[1]; | |
467e7675 | 650 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
651 | fontp->encoding[i] = fontp->encoding[1]; |
652 | } | |
653 | else | |
654 | { | |
0d407d77 | 655 | /* The font itself doesn't have information about encoding. */ |
4ed46869 KH |
656 | int i; |
657 | ||
658 | /* At first, set 1 (means 0xA0..0xFF) as the default. */ | |
659 | fontp->encoding[0] = 1; | |
467e7675 | 660 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
661 | fontp->encoding[i] = 1; |
662 | /* Then override them by a specification in Vfont_encoding_alist. */ | |
7539e11f | 663 | for (list = Vfont_encoding_alist; CONSP (list); list = XCDR (list)) |
4ed46869 | 664 | { |
7539e11f | 665 | elt = XCAR (list); |
4ed46869 | 666 | if (CONSP (elt) |
7539e11f KR |
667 | && STRINGP (XCAR (elt)) && CONSP (XCDR (elt)) |
668 | && (fast_c_string_match_ignore_case (XCAR (elt), fontname) | |
4ed46869 KH |
669 | >= 0)) |
670 | { | |
671 | Lisp_Object tmp; | |
672 | ||
7539e11f KR |
673 | for (tmp = XCDR (elt); CONSP (tmp); tmp = XCDR (tmp)) |
674 | if (CONSP (XCAR (tmp)) | |
675 | && ((i = get_charset_id (XCAR (XCAR (tmp)))) | |
4ed46869 | 676 | >= 0) |
7539e11f KR |
677 | && INTEGERP (XCDR (XCAR (tmp))) |
678 | && XFASTINT (XCDR (XCAR (tmp))) < 4) | |
4ed46869 | 679 | fontp->encoding[i] |
7539e11f | 680 | = XFASTINT (XCDR (XCAR (tmp))); |
4ed46869 KH |
681 | } |
682 | } | |
683 | } | |
684 | ||
685 | fontp->font_encoder = (struct ccl_program *) 0; | |
727fb790 KH |
686 | |
687 | if (find_ccl_program_func) | |
688 | (*find_ccl_program_func) (fontp); | |
4ed46869 | 689 | |
4ed46869 KH |
690 | return fontp; |
691 | } | |
692 | ||
0d407d77 | 693 | \f |
4ed46869 KH |
694 | /* Cache data used by fontset_pattern_regexp. The car part is a |
695 | pattern string containing at least one wild card, the cdr part is | |
696 | the corresponding regular expression. */ | |
697 | static Lisp_Object Vcached_fontset_data; | |
698 | ||
7539e11f KR |
699 | #define CACHED_FONTSET_NAME (XSTRING (XCAR (Vcached_fontset_data))->data) |
700 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) | |
4ed46869 KH |
701 | |
702 | /* If fontset name PATTERN contains any wild card, return regular | |
703 | expression corresponding to PATTERN. */ | |
704 | ||
0d407d77 | 705 | static Lisp_Object |
4ed46869 KH |
706 | fontset_pattern_regexp (pattern) |
707 | Lisp_Object pattern; | |
708 | { | |
4ed46869 KH |
709 | if (!index (XSTRING (pattern)->data, '*') |
710 | && !index (XSTRING (pattern)->data, '?')) | |
711 | /* PATTERN does not contain any wild cards. */ | |
1c283e35 | 712 | return Qnil; |
4ed46869 KH |
713 | |
714 | if (!CONSP (Vcached_fontset_data) | |
715 | || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME)) | |
716 | { | |
717 | /* We must at first update the cached data. */ | |
1c283e35 | 718 | char *regex = (char *) alloca (XSTRING (pattern)->size * 2); |
4ed46869 KH |
719 | char *p0, *p1 = regex; |
720 | ||
1c283e35 KH |
721 | /* Convert "*" to ".*", "?" to ".". */ |
722 | *p1++ = '^'; | |
ea5239ec | 723 | for (p0 = (char *) XSTRING (pattern)->data; *p0; p0++) |
4ed46869 | 724 | { |
1c283e35 | 725 | if (*p0 == '*') |
4ed46869 | 726 | { |
1c283e35 KH |
727 | *p1++ = '.'; |
728 | *p1++ = '*'; | |
4ed46869 | 729 | } |
1c283e35 | 730 | else if (*p0 == '?') |
d96d677d | 731 | *p1++ = '.'; |
1c283e35 KH |
732 | else |
733 | *p1++ = *p0; | |
4ed46869 KH |
734 | } |
735 | *p1++ = '$'; | |
736 | *p1++ = 0; | |
737 | ||
738 | Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data), | |
739 | build_string (regex)); | |
740 | } | |
741 | ||
742 | return CACHED_FONTSET_REGEX; | |
743 | } | |
744 | ||
0d407d77 KH |
745 | /* Return ID of the base fontset named NAME. If there's no such |
746 | fontset, return -1. */ | |
747 | ||
748 | int | |
749 | fs_query_fontset (name, regexpp) | |
750 | Lisp_Object name; | |
751 | int regexpp; | |
752 | { | |
753 | Lisp_Object fontset, tem; | |
754 | int i; | |
755 | ||
756 | name = Fdowncase (name); | |
757 | if (!regexpp) | |
758 | { | |
759 | tem = Frassoc (name, Vfontset_alias_alist); | |
760 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
761 | name = XCAR (tem); | |
762 | else | |
763 | { | |
764 | tem = fontset_pattern_regexp (name); | |
765 | if (STRINGP (tem)) | |
766 | { | |
767 | name = tem; | |
768 | regexpp = 1; | |
769 | } | |
770 | } | |
771 | } | |
772 | ||
773 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
774 | { | |
775 | Lisp_Object fontset; | |
776 | unsigned char *this_name; | |
777 | ||
778 | fontset = FONTSET_FROM_ID (i); | |
779 | if (NILP (fontset) | |
780 | || !BASE_FONTSET_P (fontset)) | |
781 | continue; | |
782 | ||
783 | this_name = XSTRING (FONTSET_NAME (fontset))->data; | |
784 | if (regexpp | |
785 | ? fast_c_string_match_ignore_case (name, this_name) >= 0 | |
786 | : !strcmp (XSTRING (name)->data, this_name)) | |
787 | return i; | |
788 | } | |
789 | return -1; | |
790 | } | |
791 | ||
792 | ||
727fb790 | 793 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
0d407d77 | 794 | "Return the name of a fontset that matches PATTERN.\n\ |
9af3dc47 RS |
795 | The value is nil if there is no matching fontset.\n\ |
796 | PATTERN can contain `*' or `?' as a wildcard\n\ | |
797 | just as X font name matching algorithm allows.\n\ | |
798 | If REGEXPP is non-nil, PATTERN is a regular expression.") | |
727fb790 KH |
799 | (pattern, regexpp) |
800 | Lisp_Object pattern, regexpp; | |
4ed46869 | 801 | { |
0d407d77 KH |
802 | Lisp_Object fontset; |
803 | int id; | |
4ed46869 KH |
804 | |
805 | (*check_window_system_func) (); | |
806 | ||
807 | CHECK_STRING (pattern, 0); | |
808 | ||
809 | if (XSTRING (pattern)->size == 0) | |
810 | return Qnil; | |
811 | ||
0d407d77 KH |
812 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
813 | if (id < 0) | |
814 | return Qnil; | |
4ed46869 | 815 | |
0d407d77 KH |
816 | fontset = FONTSET_FROM_ID (id); |
817 | return FONTSET_NAME (fontset); | |
4ed46869 KH |
818 | } |
819 | ||
0d407d77 KH |
820 | /* Return a list of base fontset names matching PATTERN on frame F. |
821 | If SIZE is not 0, it is the size (maximum bound width) of fontsets | |
822 | to be listed. */ | |
4ed46869 KH |
823 | |
824 | Lisp_Object | |
825 | list_fontsets (f, pattern, size) | |
826 | FRAME_PTR f; | |
827 | Lisp_Object pattern; | |
828 | int size; | |
829 | { | |
0d407d77 KH |
830 | Lisp_Object frame, regexp, val, tail; |
831 | int id; | |
4ed46869 | 832 | |
0d407d77 | 833 | XSETFRAME (frame, f); |
4ed46869 | 834 | |
0d407d77 | 835 | regexp = fontset_pattern_regexp (pattern); |
4ed46869 | 836 | val = Qnil; |
4ed46869 | 837 | |
0d407d77 KH |
838 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
839 | { | |
840 | Lisp_Object fontset; | |
841 | unsigned char *name; | |
842 | ||
843 | fontset = FONTSET_FROM_ID (id); | |
844 | if (NILP (fontset) | |
845 | || !BASE_FONTSET_P (fontset) | |
846 | || !EQ (frame, FONTSET_FRAME (fontset))) | |
847 | continue; | |
848 | name = XSTRING (FONTSET_NAME (fontset))->data; | |
849 | ||
850 | if (!NILP (regexp) | |
851 | ? (fast_c_string_match_ignore_case (regexp, name) < 0) | |
852 | : strcmp (XSTRING (pattern)->data, name)) | |
853 | continue; | |
854 | ||
855 | if (size) | |
4ed46869 | 856 | { |
0d407d77 KH |
857 | struct font_info *fontp; |
858 | fontp = FS_LOAD_FONT (f, 0, NULL, id); | |
859 | if (!fontp || size != fontp->size) | |
860 | continue; | |
4ed46869 | 861 | } |
0d407d77 | 862 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
4ed46869 KH |
863 | } |
864 | ||
865 | return val; | |
866 | } | |
867 | ||
868 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, | |
0d407d77 KH |
869 | "Create a new fontset NAME that contains font information in FONTLIST.\n\ |
870 | FONTLIST is an alist of charsets vs corresponding font name patterns.") | |
4ed46869 KH |
871 | (name, fontlist) |
872 | Lisp_Object name, fontlist; | |
873 | { | |
0d407d77 KH |
874 | Lisp_Object fontset, elements, ascii_font; |
875 | Lisp_Object tem, tail, elt; | |
4ed46869 KH |
876 | |
877 | (*check_window_system_func) (); | |
878 | ||
879 | CHECK_STRING (name, 0); | |
880 | CHECK_LIST (fontlist, 1); | |
881 | ||
0d407d77 KH |
882 | name = Fdowncase (name); |
883 | tem = Fquery_fontset (name, Qnil); | |
884 | if (!NILP (tem)) | |
9af3dc47 | 885 | error ("Fontset `%s' matches the existing fontset `%s'", |
0d407d77 | 886 | XSTRING (name)->data, XSTRING (tem)->data); |
4ed46869 | 887 | |
0d407d77 KH |
888 | /* Check the validity of FONTLIST while creating a template for |
889 | fontset elements. */ | |
890 | elements = ascii_font = Qnil; | |
7539e11f | 891 | for (tail = fontlist; CONSP (tail); tail = XCDR (tail)) |
4ed46869 | 892 | { |
0d407d77 KH |
893 | Lisp_Object family, registry; |
894 | int c, charset; | |
4ed46869 | 895 | |
0d407d77 | 896 | tem = XCAR (tail); |
4ed46869 | 897 | if (!CONSP (tem) |
7539e11f KR |
898 | || (charset = get_charset_id (XCAR (tem))) < 0 |
899 | || !STRINGP (XCDR (tem))) | |
4ed46869 | 900 | error ("Elements of fontlist must be a cons of charset and font name"); |
0d407d77 KH |
901 | |
902 | tem = Fdowncase (XCDR (tem)); | |
903 | if (charset == CHARSET_ASCII) | |
904 | ascii_font = tem; | |
905 | else | |
906 | { | |
907 | c = MAKE_CHAR (charset, 0, 0); | |
908 | elements = Fcons (Fcons (make_number (c), tem), elements); | |
909 | } | |
4ed46869 KH |
910 | } |
911 | ||
0d407d77 KH |
912 | if (NILP (ascii_font)) |
913 | error ("No ASCII font in the fontlist"); | |
4ed46869 | 914 | |
0d407d77 KH |
915 | fontset = make_fontset (Qnil, name, Qnil); |
916 | FONTSET_ASCII (fontset) = Fcons (make_number (0), ascii_font); | |
917 | for (; CONSP (elements); elements = XCDR (elements)) | |
918 | { | |
919 | elt = XCAR (elements); | |
920 | tem = Fcons (XCAR (elt), font_family_registry (XCDR (elt))); | |
921 | FONTSET_SET (fontset, XINT (XCAR (elt)), tem); | |
922 | } | |
4ed46869 KH |
923 | |
924 | return Qnil; | |
925 | } | |
926 | ||
4ed46869 | 927 | |
0d407d77 KH |
928 | /* Clear all elements of FONTSET for multibyte characters. */ |
929 | ||
930 | static void | |
931 | clear_fontset_elements (fontset) | |
932 | Lisp_Object fontset; | |
4ed46869 | 933 | { |
0d407d77 | 934 | int i; |
4ed46869 | 935 | |
0d407d77 KH |
936 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++) |
937 | XCHAR_TABLE (fontset)->contents[i] = Qnil; | |
938 | } | |
4ed46869 | 939 | |
4ed46869 | 940 | |
0d407d77 KH |
941 | /* Return 1 iff REGISTRY is a valid string as the font registry and |
942 | encoding. It is valid if it doesn't start with `-' and the number | |
943 | of `-' in the string is at most 1. */ | |
944 | ||
945 | static int | |
946 | check_registry_encoding (registry) | |
947 | Lisp_Object registry; | |
948 | { | |
949 | unsigned char *str = XSTRING (registry)->data; | |
950 | unsigned char *p = str; | |
951 | int i; | |
952 | ||
953 | if (!*p || *p++ == '-') | |
954 | return 0; | |
955 | for (i = 0; *p; p++) | |
956 | if (*p == '-') i++; | |
957 | return (i < 2); | |
958 | } | |
959 | ||
960 | ||
961 | /* Check validity of NAME as a fontset name and return the | |
962 | corresponding fontset. If not valid, signal an error. | |
963 | If NAME is t, return Vdefault_fontset. */ | |
964 | ||
965 | static Lisp_Object | |
966 | check_fontset_name (name) | |
967 | Lisp_Object name; | |
968 | { | |
969 | int id; | |
970 | ||
971 | if (EQ (name, Qt)) | |
972 | return Vdefault_fontset; | |
4ed46869 | 973 | |
0d407d77 KH |
974 | CHECK_STRING (name, 0); |
975 | id = fs_query_fontset (name, 0); | |
976 | if (id < 0) | |
9af3dc47 | 977 | error ("Fontset `%s' does not exist", XSTRING (name)->data); |
0d407d77 KH |
978 | return FONTSET_FROM_ID (id); |
979 | } | |
4ed46869 | 980 | |
0d407d77 | 981 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0, |
755f47fe DL |
982 | "Modify fontset NAME to use FONTNAME for character CHAR.\n\ |
983 | \n\ | |
984 | CHAR may be a cons; (FROM . TO), where FROM and TO are\n\ | |
985 | non-generic characters. In that case, use FONTNAME\n\ | |
986 | for all characters in the range FROM and TO (inclusive).\n\ | |
987 | \n\ | |
988 | If NAME is t, an entry in the default fontset is modified.\n\ | |
989 | In that case, FONTNAME should be a registry and encoding name\n\ | |
0d407d77 KH |
990 | of a font for CHAR.") |
991 | (name, ch, fontname, frame) | |
992 | Lisp_Object name, ch, fontname, frame; | |
993 | { | |
994 | Lisp_Object fontset, elt; | |
995 | Lisp_Object realized; | |
996 | int from, to; | |
997 | int id; | |
998 | ||
999 | fontset = check_fontset_name (name); | |
1000 | ||
1001 | if (CONSP (ch)) | |
1002 | { | |
1003 | /* CH should be (FROM . TO) where FROM and TO are non-generic | |
1004 | characters. */ | |
1005 | CHECK_NUMBER (XCAR (ch), 1); | |
1006 | CHECK_NUMBER (XCDR (ch), 1); | |
1007 | from = XINT (XCAR (ch)); | |
1008 | to = XINT (XCDR (ch)); | |
1009 | if (!char_valid_p (from, 0) || !char_valid_p (to, 0)) | |
1010 | error ("Character range should be by non-generic characters."); | |
1011 | if (!NILP (name) | |
1012 | && (SINGLE_BYTE_CHAR_P (from) || SINGLE_BYTE_CHAR_P (to))) | |
1013 | error ("Can't change font for a single byte character"); | |
1014 | } | |
1015 | else | |
4ed46869 | 1016 | { |
0d407d77 KH |
1017 | CHECK_NUMBER (ch, 1); |
1018 | from = XINT (ch); | |
1019 | to = from; | |
1020 | } | |
1021 | if (!char_valid_p (from, 1)) | |
1022 | invalid_character (from); | |
1023 | if (SINGLE_BYTE_CHAR_P (from)) | |
1024 | error ("Can't change font for a single byte character"); | |
1025 | if (from < to) | |
1026 | { | |
1027 | if (!char_valid_p (to, 1)) | |
1028 | invalid_character (to); | |
1029 | if (SINGLE_BYTE_CHAR_P (to)) | |
1030 | error ("Can't change font for a single byte character"); | |
1031 | } | |
4ed46869 | 1032 | |
0d407d77 KH |
1033 | CHECK_STRING (fontname, 2); |
1034 | fontname = Fdowncase (fontname); | |
1035 | if (fontset == Vdefault_fontset) | |
1036 | { | |
1037 | if (!check_registry_encoding (fontname)) | |
1038 | error ("Invalid registry and encoding name: %s", | |
1039 | XSTRING (fontname)->data); | |
1040 | elt = Fcons (make_number (from), Fcons (Qnil, fontname)); | |
4ed46869 | 1041 | } |
0d407d77 KH |
1042 | else |
1043 | elt = Fcons (make_number (from), font_family_registry (fontname)); | |
1044 | ||
1045 | /* The arg FRAME is kept for backward compatibility. We only check | |
1046 | the validity. */ | |
1047 | if (!NILP (frame)) | |
1048 | CHECK_LIVE_FRAME (frame, 3); | |
4ed46869 | 1049 | |
0d407d77 KH |
1050 | for (; from <= to; from++) |
1051 | FONTSET_SET (fontset, from, elt); | |
1052 | Foptimize_char_table (fontset); | |
4ed46869 | 1053 | |
0d407d77 KH |
1054 | /* If there's a realized fontset REALIZED whose parent is FONTSET, |
1055 | clear all the elements of REALIZED and free all multibyte faces | |
1056 | whose fontset is REALIZED. This way, the specified character(s) | |
1057 | are surely redisplayed by a correct font. */ | |
1058 | for (id = 0; id < ASIZE (Vfontset_table); id++) | |
1059 | { | |
1060 | realized = AREF (Vfontset_table, id); | |
1061 | if (!NILP (realized) | |
1062 | && !BASE_FONTSET_P (realized) | |
1063 | && EQ (FONTSET_BASE (realized), fontset)) | |
4ed46869 | 1064 | { |
0d407d77 KH |
1065 | FRAME_PTR f = XFRAME (FONTSET_FRAME (realized)); |
1066 | clear_fontset_elements (realized); | |
1067 | free_realized_multibyte_face (f, id); | |
4ed46869 | 1068 | } |
0d407d77 | 1069 | } |
4ed46869 KH |
1070 | |
1071 | return Qnil; | |
1072 | } | |
1073 | ||
1074 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, | |
1075 | "Return information about a font named NAME on frame FRAME.\n\ | |
1076 | If FRAME is omitted or nil, use the selected frame.\n\ | |
1077 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE,\n\ | |
6a7e6d80 | 1078 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT,\n\ |
4ed46869 KH |
1079 | where\n\ |
1080 | OPENED-NAME is the name used for opening the font,\n\ | |
1081 | FULL-NAME is the full name of the font,\n\ | |
0d407d77 | 1082 | SIZE is the maximum bound width of the font,\n\ |
4ed46869 KH |
1083 | HEIGHT is the height of the font,\n\ |
1084 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline,\n\ | |
6a7e6d80 KH |
1085 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling\n\ |
1086 | how to compose characters.\n\ | |
4ed46869 KH |
1087 | If the named font is not yet loaded, return nil.") |
1088 | (name, frame) | |
1089 | Lisp_Object name, frame; | |
1090 | { | |
1091 | FRAME_PTR f; | |
1092 | struct font_info *fontp; | |
1093 | Lisp_Object info; | |
1094 | ||
1095 | (*check_window_system_func) (); | |
1096 | ||
1097 | CHECK_STRING (name, 0); | |
0d407d77 | 1098 | name = Fdowncase (name); |
4ed46869 | 1099 | if (NILP (frame)) |
18f39d0e GM |
1100 | frame = selected_frame; |
1101 | CHECK_LIVE_FRAME (frame, 1); | |
1102 | f = XFRAME (frame); | |
4ed46869 KH |
1103 | |
1104 | if (!query_font_func) | |
1105 | error ("Font query function is not supported"); | |
1106 | ||
1107 | fontp = (*query_font_func) (f, XSTRING (name)->data); | |
1108 | if (!fontp) | |
1109 | return Qnil; | |
1110 | ||
0d407d77 | 1111 | info = Fmake_vector (make_number (7), Qnil); |
4ed46869 KH |
1112 | |
1113 | XVECTOR (info)->contents[0] = build_string (fontp->name); | |
1114 | XVECTOR (info)->contents[1] = build_string (fontp->full_name); | |
0d407d77 KH |
1115 | XVECTOR (info)->contents[2] = make_number (fontp->size); |
1116 | XVECTOR (info)->contents[3] = make_number (fontp->height); | |
1117 | XVECTOR (info)->contents[4] = make_number (fontp->baseline_offset); | |
1118 | XVECTOR (info)->contents[5] = make_number (fontp->relative_compose); | |
1119 | XVECTOR (info)->contents[6] = make_number (fontp->default_ascent); | |
4ed46869 KH |
1120 | |
1121 | return info; | |
1122 | } | |
1123 | ||
1124 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, | |
1125 | "Return information about a fontset named NAME on frame FRAME.\n\ | |
1126 | If FRAME is omitted or nil, use the selected frame.\n\ | |
1127 | The returned value is a vector of SIZE, HEIGHT, and FONT-LIST,\n\ | |
1128 | where\n\ | |
0d407d77 KH |
1129 | SIZE is the maximum bound width of ASCII font of the fontset,\n\ |
1130 | HEIGHT is the height of the ASCII font in the fontset, and\n\ | |
4ed46869 KH |
1131 | FONT-LIST is an alist of the format:\n\ |
1132 | (CHARSET REQUESTED-FONT-NAME LOADED-FONT-NAME).\n\ | |
1133 | LOADED-FONT-NAME t means the font is not yet loaded, nil means the\n\ | |
1134 | loading failed.") | |
1135 | (name, frame) | |
1136 | Lisp_Object name, frame; | |
1137 | { | |
1138 | FRAME_PTR f; | |
0d407d77 KH |
1139 | Lisp_Object fontset, realized; |
1140 | Lisp_Object info, val, loaded, requested; | |
4ed46869 KH |
1141 | int i; |
1142 | ||
1143 | (*check_window_system_func) (); | |
1144 | ||
0d407d77 KH |
1145 | fontset = check_fontset_name (name); |
1146 | ||
4ed46869 | 1147 | if (NILP (frame)) |
18f39d0e GM |
1148 | frame = selected_frame; |
1149 | CHECK_LIVE_FRAME (frame, 1); | |
1150 | f = XFRAME (frame); | |
4ed46869 | 1151 | |
4ed46869 KH |
1152 | info = Fmake_vector (make_number (3), Qnil); |
1153 | ||
0d407d77 KH |
1154 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
1155 | { | |
1156 | realized = FONTSET_FROM_ID (i); | |
1157 | if (!NILP (realized) | |
1158 | && EQ (FONTSET_FRAME (realized), frame) | |
1159 | && EQ (FONTSET_BASE (realized), fontset) | |
1160 | && INTEGERP (FONTSET_ASCII (realized))) | |
1161 | break; | |
1162 | } | |
4ed46869 | 1163 | |
0d407d77 KH |
1164 | if (NILP (realized)) |
1165 | return Qnil; | |
1166 | ||
1167 | XVECTOR (info)->contents[0] = Qnil; | |
1168 | XVECTOR (info)->contents[1] = Qnil; | |
1169 | loaded = Qnil; | |
1170 | ||
1171 | val = Fcons (Fcons (CHARSET_SYMBOL (CHARSET_ASCII), | |
1172 | Fcons (FONTSET_ASCII (fontset), | |
1173 | Fcons (loaded, Qnil))), | |
1174 | Qnil); | |
1175 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) | |
1176 | { | |
1177 | Lisp_Object elt; | |
1178 | elt = XCHAR_TABLE (fontset)->contents[i + 128]; | |
1179 | ||
1180 | if (VECTORP (elt)) | |
1181 | { | |
1182 | int face_id; | |
1183 | struct face *face; | |
1184 | ||
1185 | if (INTEGERP (AREF (elt, 2)) | |
1186 | && (face_id = XINT (AREF (elt, 2)), | |
1187 | face = FACE_FROM_ID (f, face_id))) | |
1188 | { | |
1189 | struct font_info *fontp; | |
1190 | fontp = (*get_font_info_func) (f, face->font_info_id); | |
1191 | requested = build_string (fontp->name); | |
1192 | loaded = (fontp->full_name | |
1193 | ? build_string (fontp->full_name) | |
1194 | : Qnil); | |
1195 | } | |
1196 | else | |
1197 | { | |
1198 | char *str; | |
1199 | int family_len = 0, registry_len = 0; | |
1200 | ||
1201 | if (STRINGP (AREF (elt, 0))) | |
1202 | family_len = STRING_BYTES (XSTRING (AREF (elt, 0))); | |
1203 | if (STRINGP (AREF (elt, 1))) | |
1204 | registry_len = STRING_BYTES (XSTRING (AREF (elt, 1))); | |
1205 | str = (char *) alloca (1 + family_len + 3 + registry_len + 1); | |
1206 | str[0] = '-'; | |
1207 | str[1] = 0; | |
1208 | if (family_len) | |
1209 | strcat (str, XSTRING (AREF (elt, 0))->data); | |
1210 | strcat (str, "-*-"); | |
1211 | if (registry_len) | |
1212 | strcat (str, XSTRING (AREF (elt, 1))->data); | |
1213 | requested = build_string (str); | |
1214 | loaded = Qnil; | |
1215 | } | |
1216 | val = Fcons (Fcons (CHARSET_SYMBOL (i), | |
1217 | Fcons (requested, Fcons (loaded, Qnil))), | |
1218 | val); | |
1219 | } | |
1220 | } | |
4ed46869 KH |
1221 | XVECTOR (info)->contents[2] = val; |
1222 | return info; | |
1223 | } | |
1224 | ||
0d407d77 | 1225 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 2, 0, |
755f47fe | 1226 | "Return a font name pattern for character CH in fontset NAME.\n\ |
0d407d77 KH |
1227 | If NAME is t, find a font name pattern in the default fontset.") |
1228 | (name, ch) | |
1229 | Lisp_Object name, ch; | |
1230 | { | |
1231 | int c, id; | |
1232 | Lisp_Object fontset, elt; | |
1233 | ||
1234 | fontset = check_fontset_name (name); | |
1235 | ||
1236 | CHECK_NUMBER (ch, 1); | |
1237 | c = XINT (ch); | |
1238 | if (!char_valid_p (c, 1)) | |
1239 | invalid_character (c); | |
1240 | ||
1241 | elt = FONTSET_REF (fontset, c); | |
1242 | if (CONSP (elt)) | |
1243 | elt = XCDR (elt); | |
1244 | ||
1245 | return elt; | |
1246 | } | |
1247 | ||
1248 | ||
1249 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, | |
1250 | "Return a list of all defined fontset names.") | |
1251 | () | |
1252 | { | |
1253 | Lisp_Object fontset, list; | |
1254 | int i; | |
1255 | ||
1256 | list = Qnil; | |
1257 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
1258 | { | |
1259 | fontset = FONTSET_FROM_ID (i); | |
1260 | if (!NILP (fontset) | |
1261 | && BASE_FONTSET_P (fontset)) | |
1262 | list = Fcons (FONTSET_NAME (fontset), list); | |
1263 | } | |
1264 | return list; | |
1265 | } | |
1266 | ||
dfcf069d | 1267 | void |
4ed46869 KH |
1268 | syms_of_fontset () |
1269 | { | |
1270 | int i; | |
1271 | ||
4ed46869 KH |
1272 | if (!load_font_func) |
1273 | /* Window system initializer should have set proper functions. */ | |
1274 | abort (); | |
1275 | ||
6a7e6d80 | 1276 | Qfontset = intern ("fontset"); |
4ed46869 | 1277 | staticpro (&Qfontset); |
0d407d77 | 1278 | Fput (Qfontset, Qchar_table_extra_slots, make_number (3)); |
4ed46869 KH |
1279 | |
1280 | Vcached_fontset_data = Qnil; | |
1281 | staticpro (&Vcached_fontset_data); | |
1282 | ||
0d407d77 KH |
1283 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
1284 | staticpro (&Vfontset_table); | |
1285 | next_fontset_id = 0; | |
1286 | ||
1287 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); | |
1288 | staticpro (&Vdefault_fontset); | |
1289 | FONTSET_ASCII (Vdefault_fontset) | |
1290 | = Fcons (make_number (0), Fcons (Qnil, build_string ("iso8859-1"))); | |
4ed46869 KH |
1291 | |
1292 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, | |
1293 | "Alist of fontname patterns vs corresponding encoding info.\n\ | |
1294 | Each element looks like (REGEXP . ENCODING-INFO),\n\ | |
1295 | where ENCODING-INFO is an alist of CHARSET vs ENCODING.\n\ | |
1296 | ENCODING is one of the following integer values:\n\ | |
1297 | 0: code points 0x20..0x7F or 0x2020..0x7F7F are used,\n\ | |
1298 | 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used,\n\ | |
1299 | 2: code points 0x20A0..0x7FFF are used,\n\ | |
1300 | 3: code points 0xA020..0xFF7F are used."); | |
1301 | Vfont_encoding_alist = Qnil; | |
1302 | ||
6a7e6d80 | 1303 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
fc891591 | 1304 | "Char table of characters whose ascent values should be ignored.\n\ |
6a7e6d80 | 1305 | If an entry for a character is non-nil, the ascent value of the glyph\n\ |
2aeafb78 KH |
1306 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font.\n\ |
1307 | \n\ | |
1308 | This affects how a composite character which contains\n\ | |
1309 | such a character is displayed on screen."); | |
1310 | Vuse_default_ascent = Qnil; | |
1311 | ||
1312 | DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition, | |
1313 | "Char table of characters which is not composed relatively.\n\ | |
810abb87 | 1314 | If an entry for a character is non-nil, a composition sequence\n\ |
2aeafb78 KH |
1315 | which contains that character is displayed so that\n\ |
1316 | the glyph of that character is put without considering\n\ | |
1317 | an ascent and descent value of a previous character."); | |
810abb87 | 1318 | Vignore_relative_composition = Qnil; |
6a7e6d80 | 1319 | |
01d4b817 KH |
1320 | DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist, |
1321 | "Alist of fontname vs list of the alternate fontnames.\n\ | |
fc891591 | 1322 | When a specified font name is not found, the corresponding\n\ |
01d4b817 KH |
1323 | alternate fontnames (if any) are tried instead."); |
1324 | Valternate_fontname_alist = Qnil; | |
8c83e4f9 | 1325 | |
1c283e35 KH |
1326 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
1327 | "Alist of fontset names vs the aliases."); | |
1328 | Vfontset_alias_alist = Qnil; | |
1329 | ||
ec3bb068 KH |
1330 | DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font, |
1331 | "*Non-nil means highlight characters shown in wrong size fonts somehow.\n\ | |
1332 | The way to highlight them depends on window system on which Emacs runs.\n\ | |
fc891591 | 1333 | On X11, a rectangle is shown around each such character."); |
e3ee2a8a | 1334 | Vhighlight_wrong_size_font = Qnil; |
ec3bb068 KH |
1335 | |
1336 | DEFVAR_LISP ("clip-large-size-font", &Vclip_large_size_font, | |
fc891591 | 1337 | "*Non-nil means characters shown in overlarge fonts are clipped.\n\ |
1c283e35 | 1338 | The height of clipping area is the same as that of an ASCII character.\n\ |
fc891591 RS |
1339 | The width of the area is the same as that of an ASCII character,\n\ |
1340 | or twice as wide, depending on the character set's column-width.\n\ | |
1c283e35 | 1341 | \n\ |
fc891591 RS |
1342 | If the only font you have for a specific character set is too large,\n\ |
1343 | and clipping these characters makes them hard to read,\n\ | |
1344 | you can set this variable to nil to display the characters without clipping.\n\ | |
1345 | The drawback is that you will get some garbage left on your screen."); | |
ec3bb068 KH |
1346 | Vclip_large_size_font = Qt; |
1347 | ||
810abb87 KH |
1348 | DEFVAR_LISP ("vertical-centering-font-regexp", |
1349 | &Vvertical_centering_font_regexp, | |
1350 | "*Regexp matching font names that require vertical centering on display.\n\ | |
1351 | When a character is displayed with such fonts, the character is displayed\n\ | |
1352 | at the vertival center of lines."); | |
1353 | Vvertical_centering_font_regexp = Qnil; | |
1354 | ||
4ed46869 KH |
1355 | defsubr (&Squery_fontset); |
1356 | defsubr (&Snew_fontset); | |
1357 | defsubr (&Sset_fontset_font); | |
1358 | defsubr (&Sfont_info); | |
1359 | defsubr (&Sfontset_info); | |
0d407d77 KH |
1360 | defsubr (&Sfontset_font); |
1361 | defsubr (&Sfontset_list); | |
4ed46869 | 1362 | } |