Commit | Line | Data |
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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 | 30 | #include "lisp.h" |
1ff005e1 | 31 | #include "buffer.h" |
4ed46869 KH |
32 | #include "charset.h" |
33 | #include "ccl.h" | |
2538fae4 | 34 | #include "keyboard.h" |
4ed46869 | 35 | #include "frame.h" |
0d407d77 | 36 | #include "dispextern.h" |
3541bb8f | 37 | #include "fontset.h" |
0d407d77 KH |
38 | #include "window.h" |
39 | ||
40 | #ifdef FONTSET_DEBUG | |
41 | #undef xassert | |
42 | #define xassert(X) do {if (!(X)) abort ();} while (0) | |
43 | #undef INLINE | |
44 | #define INLINE | |
45 | #endif | |
46 | ||
47 | ||
48 | /* FONTSET | |
49 | ||
50 | A fontset is a collection of font related information to give | |
51 | similar appearance (style, size, etc) of characters. There are two | |
52 | kinds of fontsets; base and realized. A base fontset is created by | |
53 | new-fontset from Emacs Lisp explicitly. A realized fontset is | |
54 | created implicitly when a face is realized for ASCII characters. A | |
55 | face is also realized for multibyte characters based on an ASCII | |
56 | face. All of the multibyte faces based on the same ASCII face | |
57 | share the same realized fontset. | |
58 | ||
59 | A fontset object is implemented by a char-table. | |
60 | ||
61 | An element of a base fontset is: | |
62 | (INDEX . FONTNAME) or | |
63 | (INDEX . (FOUNDRY . REGISTRY )) | |
64 | FONTNAME is a font name pattern for the corresponding character. | |
65 | FOUNDRY and REGISTRY are respectively foundy and regisry fields of | |
66 | a font name for the corresponding character. INDEX specifies for | |
67 | which character (or generic character) the element is defined. It | |
68 | may be different from an index to access this element. For | |
69 | instance, if a fontset defines some font for all characters of | |
70 | charset `japanese-jisx0208', INDEX is the generic character of this | |
71 | charset. REGISTRY is the | |
72 | ||
73 | An element of a realized fontset is FACE-ID which is a face to use | |
74 | for displaying the correspnding character. | |
75 | ||
76 | All single byte charaters (ASCII and 8bit-unibyte) share the same | |
11d9bd93 KH |
77 | element in a fontset. The element is stored in the first element |
78 | of the fontset. | |
0d407d77 KH |
79 | |
80 | To access or set each element, use macros FONTSET_REF and | |
81 | FONTSET_SET respectively for efficiency. | |
82 | ||
83 | A fontset has 3 extra slots. | |
84 | ||
85 | The 1st slot is an ID number of the fontset. | |
86 | ||
87 | The 2nd slot is a name of the fontset. This is nil for a realized | |
88 | face. | |
89 | ||
90 | The 3rd slot is a frame that the fontset belongs to. This is nil | |
91 | for a default face. | |
92 | ||
93 | A parent of a base fontset is nil. A parent of a realized fontset | |
94 | is a base fontset. | |
95 | ||
afe93d01 | 96 | All fontsets are recorded in Vfontset_table. |
0d407d77 KH |
97 | |
98 | ||
99 | DEFAULT FONTSET | |
100 | ||
101 | There's a special fontset named `default fontset' which defines a | |
afe93d01 KH |
102 | default fontname pattern. When a base fontset doesn't specify a |
103 | font for a specific character, the corresponding value in the | |
104 | default fontset is used. The format is the same as a base fontset. | |
0d407d77 | 105 | |
afe93d01 KH |
106 | The parent of a realized fontset created for such a face that has |
107 | no fontset is the default fontset. | |
0d407d77 KH |
108 | |
109 | ||
110 | These structures are hidden from the other codes than this file. | |
111 | The other codes handle fontsets only by their ID numbers. They | |
112 | usually use variable name `fontset' for IDs. But, in this file, we | |
113 | always use varialbe name `id' for IDs, and name `fontset' for the | |
114 | actual fontset objects. | |
115 | ||
116 | */ | |
117 | ||
118 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ | |
119 | ||
120 | extern Lisp_Object Qfont; | |
121 | Lisp_Object Qfontset; | |
122 | ||
123 | /* Vector containing all fontsets. */ | |
124 | static Lisp_Object Vfontset_table; | |
125 | ||
126 | /* Next possibly free fontset ID. Usually this keeps the mininum | |
127 | fontset ID not yet used. */ | |
128 | static int next_fontset_id; | |
129 | ||
130 | /* The default fontset. This gives default FAMILY and REGISTRY of | |
131 | font for each characters. */ | |
132 | static Lisp_Object Vdefault_fontset; | |
4ed46869 | 133 | |
4ed46869 | 134 | Lisp_Object Vfont_encoding_alist; |
6a7e6d80 | 135 | Lisp_Object Vuse_default_ascent; |
2aeafb78 | 136 | Lisp_Object Vignore_relative_composition; |
01d4b817 | 137 | Lisp_Object Valternate_fontname_alist; |
1c283e35 | 138 | Lisp_Object Vfontset_alias_alist; |
ec3bb068 KH |
139 | Lisp_Object Vhighlight_wrong_size_font; |
140 | Lisp_Object Vclip_large_size_font; | |
810abb87 | 141 | Lisp_Object Vvertical_centering_font_regexp; |
4ed46869 | 142 | |
0d407d77 KH |
143 | /* The following six are declarations of callback functions depending |
144 | on window system. See the comments in src/fontset.h for more | |
145 | detail. */ | |
4ed46869 KH |
146 | |
147 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ | |
5771dcf4 | 148 | struct font_info *(*get_font_info_func) P_ ((FRAME_PTR f, int font_idx)); |
4ed46869 KH |
149 | |
150 | /* Return a list of font names which matches PATTERN. See the document of | |
151 | `x-list-fonts' for more detail. */ | |
3541bb8f KH |
152 | Lisp_Object (*list_fonts_func) P_ ((struct frame *f, |
153 | Lisp_Object pattern, | |
154 | int size, | |
155 | int maxnames)); | |
4ed46869 KH |
156 | |
157 | /* Load a font named NAME for frame F and return a pointer to the | |
158 | information of the loaded font. If loading is failed, return 0. */ | |
5771dcf4 | 159 | struct font_info *(*load_font_func) P_ ((FRAME_PTR f, char *name, int)); |
4ed46869 KH |
160 | |
161 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ | |
5771dcf4 | 162 | struct font_info *(*query_font_func) P_ ((FRAME_PTR f, char *name)); |
4ed46869 KH |
163 | |
164 | /* Additional function for setting fontset or changing fontset | |
165 | contents of frame F. */ | |
5771dcf4 AS |
166 | void (*set_frame_fontset_func) P_ ((FRAME_PTR f, Lisp_Object arg, |
167 | Lisp_Object oldval)); | |
4ed46869 | 168 | |
727fb790 KH |
169 | /* To find a CCL program, fs_load_font calls this function. |
170 | The argument is a pointer to the struct font_info. | |
171 | This function set the memer `encoder' of the structure. */ | |
172 | void (*find_ccl_program_func) P_ ((struct font_info *)); | |
173 | ||
4ed46869 | 174 | /* Check if any window system is used now. */ |
5771dcf4 | 175 | void (*check_window_system_func) P_ ((void)); |
4ed46869 | 176 | |
0d407d77 KH |
177 | |
178 | /* Prototype declarations for static functions. */ | |
179 | static Lisp_Object fontset_ref P_ ((Lisp_Object, int)); | |
180 | static void fontset_set P_ ((Lisp_Object, int, Lisp_Object)); | |
181 | static Lisp_Object make_fontset P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); | |
182 | static int fontset_id_valid_p P_ ((int)); | |
183 | static Lisp_Object fontset_pattern_regexp P_ ((Lisp_Object)); | |
184 | static Lisp_Object font_family_registry P_ ((Lisp_Object)); | |
185 | ||
186 | \f | |
187 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ | |
188 | ||
0d407d77 KH |
189 | /* Return the fontset with ID. No check of ID's validness. */ |
190 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) | |
191 | ||
afe93d01 | 192 | /* Macros to access special values of FONTSET. */ |
0d407d77 KH |
193 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] |
194 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] | |
195 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[2] | |
11d9bd93 | 196 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->contents[0] |
0d407d77 KH |
197 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->parent |
198 | ||
199 | #define BASE_FONTSET_P(fontset) NILP (FONTSET_BASE(fontset)) | |
200 | ||
201 | ||
202 | /* Return the element of FONTSET (char-table) at index C (character). */ | |
203 | ||
204 | #define FONTSET_REF(fontset, c) fontset_ref (fontset, c) | |
205 | ||
afe93d01 | 206 | static Lisp_Object |
0d407d77 KH |
207 | fontset_ref (fontset, c) |
208 | Lisp_Object fontset; | |
209 | int c; | |
210 | { | |
211 | int charset, c1, c2; | |
212 | Lisp_Object elt, defalt; | |
213 | int i; | |
214 | ||
215 | if (SINGLE_BYTE_CHAR_P (c)) | |
216 | return FONTSET_ASCII (fontset); | |
217 | ||
f55d03b1 | 218 | SPLIT_CHAR (c, charset, c1, c2); |
0d407d77 KH |
219 | elt = XCHAR_TABLE (fontset)->contents[charset + 128]; |
220 | if (!SUB_CHAR_TABLE_P (elt)) | |
221 | return elt; | |
222 | defalt = XCHAR_TABLE (elt)->defalt; | |
223 | if (c1 < 32 | |
224 | || (elt = XCHAR_TABLE (elt)->contents[c1], | |
225 | NILP (elt))) | |
226 | return defalt; | |
227 | if (!SUB_CHAR_TABLE_P (elt)) | |
228 | return elt; | |
229 | defalt = XCHAR_TABLE (elt)->defalt; | |
230 | if (c2 < 32 | |
231 | || (elt = XCHAR_TABLE (elt)->contents[c2], | |
232 | NILP (elt))) | |
233 | return defalt; | |
234 | return elt; | |
235 | } | |
236 | ||
237 | ||
238 | #define FONTSET_REF_VIA_BASE(fontset, c) fontset_ref_via_base (fontset, &c) | |
239 | ||
afe93d01 | 240 | static Lisp_Object |
0d407d77 KH |
241 | fontset_ref_via_base (fontset, c) |
242 | Lisp_Object fontset; | |
243 | int *c; | |
244 | { | |
245 | int charset, c1, c2; | |
246 | Lisp_Object elt; | |
0d407d77 KH |
247 | |
248 | if (SINGLE_BYTE_CHAR_P (*c)) | |
249 | return FONTSET_ASCII (fontset); | |
250 | ||
251 | elt = FONTSET_REF (FONTSET_BASE (fontset), *c); | |
11d9bd93 KH |
252 | if (NILP (elt) && ! EQ (fontset, Vdefault_fontset)) |
253 | elt = FONTSET_REF (Vdefault_fontset, *c); | |
0d407d77 KH |
254 | if (NILP (elt)) |
255 | return Qnil; | |
256 | ||
257 | *c = XINT (XCAR (elt)); | |
f55d03b1 | 258 | SPLIT_CHAR (*c, charset, c1, c2); |
0d407d77 KH |
259 | elt = XCHAR_TABLE (fontset)->contents[charset + 128]; |
260 | if (c1 < 32) | |
261 | return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt); | |
262 | if (!SUB_CHAR_TABLE_P (elt)) | |
263 | return Qnil; | |
264 | elt = XCHAR_TABLE (elt)->contents[c1]; | |
265 | if (c2 < 32) | |
266 | return (SUB_CHAR_TABLE_P (elt) ? XCHAR_TABLE (elt)->defalt : elt); | |
267 | if (!SUB_CHAR_TABLE_P (elt)) | |
268 | return Qnil; | |
269 | elt = XCHAR_TABLE (elt)->contents[c2]; | |
270 | return elt; | |
271 | } | |
272 | ||
273 | ||
afe93d01 | 274 | /* Store into the element of FONTSET at index C the value NEWELT. */ |
0d407d77 KH |
275 | #define FONTSET_SET(fontset, c, newelt) fontset_set(fontset, c, newelt) |
276 | ||
277 | static void | |
278 | fontset_set (fontset, c, newelt) | |
279 | Lisp_Object fontset; | |
280 | int c; | |
281 | Lisp_Object newelt; | |
282 | { | |
283 | int charset, code[3]; | |
284 | Lisp_Object *elt, tmp; | |
285 | int i, j; | |
286 | ||
287 | if (SINGLE_BYTE_CHAR_P (c)) | |
288 | { | |
289 | FONTSET_ASCII (fontset) = newelt; | |
290 | return; | |
291 | } | |
292 | ||
f55d03b1 | 293 | SPLIT_CHAR (c, charset, code[0], code[1]); |
0d407d77 KH |
294 | code[2] = 0; /* anchor */ |
295 | elt = &XCHAR_TABLE (fontset)->contents[charset + 128]; | |
296 | for (i = 0; code[i] > 0; i++) | |
297 | { | |
298 | if (!SUB_CHAR_TABLE_P (*elt)) | |
299 | *elt = make_sub_char_table (*elt); | |
300 | elt = &XCHAR_TABLE (*elt)->contents[code[i]]; | |
301 | } | |
302 | if (SUB_CHAR_TABLE_P (*elt)) | |
303 | XCHAR_TABLE (*elt)->defalt = newelt; | |
304 | else | |
305 | *elt = newelt; | |
306 | } | |
307 | ||
308 | ||
309 | /* Return a newly created fontset with NAME. If BASE is nil, make a | |
310 | base fontset. Otherwise make a realized fontset whose parent is | |
311 | BASE. */ | |
312 | ||
313 | static Lisp_Object | |
314 | make_fontset (frame, name, base) | |
315 | Lisp_Object frame, name, base; | |
4ed46869 | 316 | { |
0d407d77 KH |
317 | Lisp_Object fontset, elt, base_elt; |
318 | int size = ASIZE (Vfontset_table); | |
319 | int id = next_fontset_id; | |
320 | int i, j; | |
321 | ||
322 | /* Find a free slot in Vfontset_table. Usually, next_fontset_id is | |
323 | the next available fontset ID. So it is expected that this loop | |
324 | terminates quickly. In addition, as the last element of | |
325 | Vfotnset_table is always nil, we don't have to check the range of | |
326 | id. */ | |
327 | while (!NILP (AREF (Vfontset_table, id))) id++; | |
328 | ||
329 | if (id + 1 == size) | |
330 | { | |
331 | Lisp_Object tem; | |
332 | int i; | |
4ed46869 | 333 | |
0d407d77 KH |
334 | tem = Fmake_vector (make_number (size + 8), Qnil); |
335 | for (i = 0; i < size; i++) | |
336 | AREF (tem, i) = AREF (Vfontset_table, i); | |
337 | Vfontset_table = tem; | |
338 | } | |
4ed46869 | 339 | |
11d9bd93 | 340 | fontset = Fmake_char_table (Qfontset, Qnil); |
0d407d77 KH |
341 | |
342 | FONTSET_ID (fontset) = make_number (id); | |
343 | FONTSET_NAME (fontset) = name; | |
344 | FONTSET_FRAME (fontset) = frame; | |
345 | FONTSET_BASE (fontset) = base; | |
346 | ||
347 | AREF (Vfontset_table, id) = fontset; | |
348 | next_fontset_id = id + 1; | |
349 | return fontset; | |
4ed46869 KH |
350 | } |
351 | ||
0d407d77 KH |
352 | |
353 | /* Return 1 if ID is a valid fontset id, else return 0. */ | |
354 | ||
355 | static INLINE int | |
356 | fontset_id_valid_p (id) | |
357 | int id; | |
358 | { | |
359 | return (id >= 0 && id < ASIZE (Vfontset_table) - 1); | |
360 | } | |
361 | ||
362 | ||
363 | /* Extract `family' and `registry' string from FONTNAME and set in | |
364 | *FAMILY and *REGISTRY respectively. Actually, `family' may also | |
365 | contain `foundry', `registry' may also contain `encoding' of | |
366 | FONTNAME. */ | |
367 | ||
368 | static Lisp_Object | |
369 | font_family_registry (fontname) | |
370 | Lisp_Object fontname; | |
371 | { | |
372 | Lisp_Object family, registry; | |
373 | char *p = XSTRING (fontname)->data; | |
374 | char *sep[15]; | |
375 | int i = 0; | |
376 | ||
377 | while (*p && i < 15) if (*p++ == '-') sep[i++] = p; | |
378 | if (i != 14) | |
379 | return fontname; | |
380 | ||
381 | family = make_unibyte_string (sep[0], sep[2] - 1 - sep[0]); | |
382 | registry = make_unibyte_string (sep[12], p - sep[12]); | |
383 | return Fcons (family, registry); | |
384 | } | |
385 | ||
386 | \f | |
387 | /********** INTERFACES TO xfaces.c and dispextern.h **********/ | |
388 | ||
389 | /* Return name of the fontset with ID. */ | |
390 | ||
391 | Lisp_Object | |
392 | fontset_name (id) | |
393 | int id; | |
394 | { | |
395 | Lisp_Object fontset; | |
396 | fontset = FONTSET_FROM_ID (id); | |
397 | return FONTSET_NAME (fontset); | |
398 | } | |
399 | ||
400 | ||
401 | /* Return ASCII font name of the fontset with ID. */ | |
402 | ||
403 | Lisp_Object | |
404 | fontset_ascii (id) | |
405 | int id; | |
406 | { | |
407 | Lisp_Object fontset, elt; | |
408 | fontset= FONTSET_FROM_ID (id); | |
409 | elt = FONTSET_ASCII (fontset); | |
410 | return XCDR (elt); | |
411 | } | |
412 | ||
413 | ||
414 | /* Free fontset of FACE. Called from free_realized_face. */ | |
415 | ||
4ed46869 | 416 | void |
0d407d77 KH |
417 | free_face_fontset (f, face) |
418 | FRAME_PTR f; | |
419 | struct face *face; | |
4ed46869 | 420 | { |
0d407d77 | 421 | if (fontset_id_valid_p (face->fontset)) |
4ed46869 | 422 | { |
0d407d77 KH |
423 | AREF (Vfontset_table, face->fontset) = Qnil; |
424 | if (face->fontset < next_fontset_id) | |
425 | next_fontset_id = face->fontset; | |
426 | } | |
427 | } | |
18998710 | 428 | |
0d407d77 KH |
429 | |
430 | /* Return 1 iff FACE is suitable for displaying character C. | |
431 | Otherwise return 0. Called from the macro FACE_SUITABLE_FOR_CHAR_P | |
432 | when C is not a single byte character.. */ | |
433 | ||
434 | int | |
435 | face_suitable_for_char_p (face, c) | |
436 | struct face *face; | |
437 | int c; | |
438 | { | |
439 | Lisp_Object fontset, elt; | |
440 | ||
441 | if (SINGLE_BYTE_CHAR_P (c)) | |
442 | return (face == face->ascii_face); | |
443 | ||
444 | xassert (fontset_id_valid_p (face->fontset)); | |
445 | fontset = FONTSET_FROM_ID (face->fontset); | |
446 | xassert (!BASE_FONTSET_P (fontset)); | |
447 | ||
448 | elt = FONTSET_REF_VIA_BASE (fontset, c); | |
449 | return (!NILP (elt) && face->id == XFASTINT (elt)); | |
450 | } | |
451 | ||
452 | ||
453 | /* Return ID of face suitable for displaying character C on frame F. | |
454 | The selection of face is done based on the fontset of FACE. FACE | |
455 | should already have been realized for ASCII characters. Called | |
456 | from the macro FACE_FOR_CHAR when C is not a single byte character. */ | |
457 | ||
458 | int | |
459 | face_for_char (f, face, c) | |
460 | FRAME_PTR f; | |
461 | struct face *face; | |
462 | int c; | |
463 | { | |
464 | Lisp_Object fontset, elt; | |
465 | int face_id; | |
466 | ||
467 | xassert (fontset_id_valid_p (face->fontset)); | |
468 | fontset = FONTSET_FROM_ID (face->fontset); | |
469 | xassert (!BASE_FONTSET_P (fontset)); | |
470 | ||
471 | elt = FONTSET_REF_VIA_BASE (fontset, c); | |
472 | if (!NILP (elt)) | |
473 | return XINT (elt); | |
474 | ||
475 | /* No face is recorded for C in the fontset of FACE. Make a new | |
476 | realized face for C that has the same fontset. */ | |
477 | face_id = lookup_face (f, face->lface, c, face); | |
478 | ||
479 | /* Record the face ID in FONTSET at the same index as the | |
480 | information in the base fontset. */ | |
481 | FONTSET_SET (fontset, c, make_number (face_id)); | |
482 | return face_id; | |
483 | } | |
484 | ||
485 | ||
486 | /* Make a realized fontset for ASCII face FACE on frame F from the | |
487 | base fontset BASE_FONTSET_ID. If BASE_FONTSET_ID is -1, use the | |
488 | default fontset as the base. Value is the id of the new fontset. | |
489 | Called from realize_x_face. */ | |
490 | ||
491 | int | |
492 | make_fontset_for_ascii_face (f, base_fontset_id) | |
493 | FRAME_PTR f; | |
494 | int base_fontset_id; | |
495 | { | |
496 | Lisp_Object base_fontset, fontset, name, frame; | |
497 | ||
498 | XSETFRAME (frame, f); | |
499 | if (base_fontset_id >= 0) | |
500 | { | |
501 | base_fontset = FONTSET_FROM_ID (base_fontset_id); | |
502 | if (!BASE_FONTSET_P (base_fontset)) | |
503 | base_fontset = FONTSET_BASE (base_fontset); | |
504 | xassert (BASE_FONTSET_P (base_fontset)); | |
4ed46869 | 505 | } |
0d407d77 KH |
506 | else |
507 | base_fontset = Vdefault_fontset; | |
508 | ||
509 | fontset = make_fontset (frame, Qnil, base_fontset); | |
f3231837 | 510 | return XINT (FONTSET_ID (fontset)); |
0d407d77 KH |
511 | } |
512 | ||
513 | ||
514 | /* Return the font name pattern for C that is recorded in the fontset | |
515 | with ID. A font is opened by that pattern to get the fullname. If | |
516 | the fullname conform to XLFD, extract foundry-family field and | |
517 | registry-encoding field, and return the cons of them. Otherwise | |
518 | return the fullname. If ID is -1, or the fontset doesn't contain | |
519 | information about C, get the registry and encoding of C from the | |
520 | default fontset. Called from choose_face_font. */ | |
521 | ||
522 | Lisp_Object | |
523 | fontset_font_pattern (f, id, c) | |
524 | FRAME_PTR f; | |
525 | int id, c; | |
526 | { | |
527 | Lisp_Object fontset, elt; | |
528 | struct font_info *fontp; | |
529 | Lisp_Object family_registry; | |
530 | ||
531 | elt = Qnil; | |
532 | if (fontset_id_valid_p (id)) | |
533 | { | |
534 | fontset = FONTSET_FROM_ID (id); | |
535 | xassert (!BASE_FONTSET_P (fontset)); | |
536 | fontset = FONTSET_BASE (fontset); | |
537 | elt = FONTSET_REF (fontset, c); | |
538 | } | |
11d9bd93 | 539 | if (NILP (elt)) |
0d407d77 KH |
540 | elt = FONTSET_REF (Vdefault_fontset, c); |
541 | ||
542 | if (!CONSP (elt)) | |
543 | return Qnil; | |
544 | if (CONSP (XCDR (elt))) | |
545 | return XCDR (elt); | |
546 | ||
547 | /* The fontset specifies only a font name pattern (not cons of | |
548 | family and registry). Try to open a font by that pattern and get | |
549 | a registry from the full name of the opened font. We ignore | |
550 | family name here because it should be wild card in the fontset | |
551 | specification. */ | |
552 | elt = XCDR (elt); | |
553 | xassert (STRINGP (elt)); | |
554 | fontp = FS_LOAD_FONT (f, c, XSTRING (elt)->data, -1); | |
555 | if (!fontp) | |
556 | return Qnil; | |
4ed46869 | 557 | |
0d407d77 KH |
558 | family_registry = font_family_registry (build_string (fontp->full_name)); |
559 | if (!CONSP (family_registry)) | |
560 | return family_registry; | |
561 | XCAR (family_registry) = Qnil; | |
562 | return family_registry; | |
4ed46869 KH |
563 | } |
564 | ||
d5e7d534 | 565 | |
0d407d77 KH |
566 | /* Load a font named FONTNAME to display character C on frame F. |
567 | Return a pointer to the struct font_info of the loaded font. If | |
568 | loading fails, return NULL. If FACE is non-zero and a fontset is | |
569 | assigned to it, record FACE->id in the fontset for C. If FONTNAME | |
570 | is NULL, the name is taken from the fontset of FACE or what | |
571 | specified by ID. */ | |
4ed46869 KH |
572 | |
573 | struct font_info * | |
0d407d77 | 574 | fs_load_font (f, c, fontname, id, face) |
4ed46869 | 575 | FRAME_PTR f; |
0d407d77 | 576 | int c; |
4ed46869 | 577 | char *fontname; |
0d407d77 KH |
578 | int id; |
579 | struct face *face; | |
4ed46869 | 580 | { |
0d407d77 | 581 | Lisp_Object fontset; |
4ed46869 KH |
582 | Lisp_Object list, elt; |
583 | int font_idx; | |
584 | int size = 0; | |
4ed46869 | 585 | struct font_info *fontp; |
0d407d77 KH |
586 | int charset = CHAR_CHARSET (c); |
587 | ||
588 | if (face) | |
589 | id = face->fontset; | |
590 | if (id < 0) | |
591 | fontset = Qnil; | |
592 | else | |
593 | fontset = FONTSET_FROM_ID (id); | |
4ed46869 | 594 | |
0d407d77 KH |
595 | if (!NILP (fontset) |
596 | && !BASE_FONTSET_P (fontset)) | |
4ed46869 | 597 | { |
0d407d77 KH |
598 | elt = FONTSET_REF_VIA_BASE (fontset, c); |
599 | if (!NILP (elt)) | |
600 | { | |
601 | /* A suitable face for C is already recorded, which means | |
602 | that a proper font is already loaded. */ | |
603 | int face_id = XINT (elt); | |
4ed46869 | 604 | |
0d407d77 KH |
605 | xassert (face_id == face->id); |
606 | face = FACE_FROM_ID (f, face_id); | |
607 | return (*get_font_info_func) (f, face->font_info_id); | |
608 | } | |
4ed46869 | 609 | |
0d407d77 | 610 | if (!fontname && charset == CHARSET_ASCII) |
afbee0fa | 611 | { |
0d407d77 KH |
612 | elt = FONTSET_ASCII (fontset); |
613 | fontname = XSTRING (XCDR (elt))->data; | |
afbee0fa | 614 | } |
afbee0fa | 615 | } |
4ed46869 | 616 | |
0d407d77 KH |
617 | if (!fontname) |
618 | /* No way to get fontname. */ | |
619 | return 0; | |
4ed46869 | 620 | |
0d407d77 | 621 | fontp = (*load_font_func) (f, fontname, size); |
4ed46869 | 622 | if (!fontp) |
0d407d77 | 623 | return 0; |
4ed46869 | 624 | |
0d407d77 KH |
625 | /* Fill in members (charset, vertical_centering, encoding, etc) of |
626 | font_info structure that are not set by (*load_font_func). */ | |
4ed46869 KH |
627 | fontp->charset = charset; |
628 | ||
810abb87 KH |
629 | fontp->vertical_centering |
630 | = (STRINGP (Vvertical_centering_font_regexp) | |
631 | && (fast_c_string_match_ignore_case | |
632 | (Vvertical_centering_font_regexp, fontp->full_name) >= 0)); | |
633 | ||
afbee0fa | 634 | if (fontp->encoding[1] != FONT_ENCODING_NOT_DECIDED) |
4ed46869 KH |
635 | { |
636 | /* The font itself tells which code points to be used. Use this | |
637 | encoding for all other charsets. */ | |
638 | int i; | |
639 | ||
640 | fontp->encoding[0] = fontp->encoding[1]; | |
467e7675 | 641 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
642 | fontp->encoding[i] = fontp->encoding[1]; |
643 | } | |
644 | else | |
645 | { | |
0d407d77 | 646 | /* The font itself doesn't have information about encoding. */ |
4ed46869 KH |
647 | int i; |
648 | ||
40292c8a KH |
649 | fontname = fontp->full_name; |
650 | /* By default, encoding of ASCII chars is 0 (i.e. 0x00..0x7F), | |
651 | others is 1 (i.e. 0x80..0xFF). */ | |
652 | fontp->encoding[0] = 0; | |
467e7675 | 653 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
654 | fontp->encoding[i] = 1; |
655 | /* Then override them by a specification in Vfont_encoding_alist. */ | |
7539e11f | 656 | for (list = Vfont_encoding_alist; CONSP (list); list = XCDR (list)) |
4ed46869 | 657 | { |
7539e11f | 658 | elt = XCAR (list); |
4ed46869 | 659 | if (CONSP (elt) |
7539e11f KR |
660 | && STRINGP (XCAR (elt)) && CONSP (XCDR (elt)) |
661 | && (fast_c_string_match_ignore_case (XCAR (elt), fontname) | |
4ed46869 KH |
662 | >= 0)) |
663 | { | |
664 | Lisp_Object tmp; | |
665 | ||
7539e11f KR |
666 | for (tmp = XCDR (elt); CONSP (tmp); tmp = XCDR (tmp)) |
667 | if (CONSP (XCAR (tmp)) | |
668 | && ((i = get_charset_id (XCAR (XCAR (tmp)))) | |
4ed46869 | 669 | >= 0) |
7539e11f KR |
670 | && INTEGERP (XCDR (XCAR (tmp))) |
671 | && XFASTINT (XCDR (XCAR (tmp))) < 4) | |
4ed46869 | 672 | fontp->encoding[i] |
7539e11f | 673 | = XFASTINT (XCDR (XCAR (tmp))); |
4ed46869 KH |
674 | } |
675 | } | |
676 | } | |
677 | ||
678 | fontp->font_encoder = (struct ccl_program *) 0; | |
727fb790 KH |
679 | |
680 | if (find_ccl_program_func) | |
681 | (*find_ccl_program_func) (fontp); | |
4ed46869 | 682 | |
1ff005e1 KH |
683 | /* If we loaded a font for a face that has fontset, record the face |
684 | ID in the fontset for C. */ | |
685 | if (face | |
686 | && !NILP (fontset) | |
687 | && !BASE_FONTSET_P (fontset)) | |
688 | FONTSET_SET (fontset, c, make_number (face->id)); | |
4ed46869 KH |
689 | return fontp; |
690 | } | |
691 | ||
0d407d77 | 692 | \f |
4ed46869 KH |
693 | /* Cache data used by fontset_pattern_regexp. The car part is a |
694 | pattern string containing at least one wild card, the cdr part is | |
695 | the corresponding regular expression. */ | |
696 | static Lisp_Object Vcached_fontset_data; | |
697 | ||
7539e11f KR |
698 | #define CACHED_FONTSET_NAME (XSTRING (XCAR (Vcached_fontset_data))->data) |
699 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) | |
4ed46869 KH |
700 | |
701 | /* If fontset name PATTERN contains any wild card, return regular | |
702 | expression corresponding to PATTERN. */ | |
703 | ||
0d407d77 | 704 | static Lisp_Object |
4ed46869 KH |
705 | fontset_pattern_regexp (pattern) |
706 | Lisp_Object pattern; | |
707 | { | |
4ed46869 KH |
708 | if (!index (XSTRING (pattern)->data, '*') |
709 | && !index (XSTRING (pattern)->data, '?')) | |
710 | /* PATTERN does not contain any wild cards. */ | |
1c283e35 | 711 | return Qnil; |
4ed46869 KH |
712 | |
713 | if (!CONSP (Vcached_fontset_data) | |
714 | || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME)) | |
715 | { | |
716 | /* We must at first update the cached data. */ | |
1c283e35 | 717 | char *regex = (char *) alloca (XSTRING (pattern)->size * 2); |
4ed46869 KH |
718 | char *p0, *p1 = regex; |
719 | ||
1c283e35 KH |
720 | /* Convert "*" to ".*", "?" to ".". */ |
721 | *p1++ = '^'; | |
ea5239ec | 722 | for (p0 = (char *) XSTRING (pattern)->data; *p0; p0++) |
4ed46869 | 723 | { |
1c283e35 | 724 | if (*p0 == '*') |
4ed46869 | 725 | { |
1c283e35 KH |
726 | *p1++ = '.'; |
727 | *p1++ = '*'; | |
4ed46869 | 728 | } |
1c283e35 | 729 | else if (*p0 == '?') |
d96d677d | 730 | *p1++ = '.'; |
1c283e35 KH |
731 | else |
732 | *p1++ = *p0; | |
4ed46869 KH |
733 | } |
734 | *p1++ = '$'; | |
735 | *p1++ = 0; | |
736 | ||
737 | Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data), | |
738 | build_string (regex)); | |
739 | } | |
740 | ||
741 | return CACHED_FONTSET_REGEX; | |
742 | } | |
743 | ||
0d407d77 KH |
744 | /* Return ID of the base fontset named NAME. If there's no such |
745 | fontset, return -1. */ | |
746 | ||
747 | int | |
748 | fs_query_fontset (name, regexpp) | |
749 | Lisp_Object name; | |
750 | int regexpp; | |
751 | { | |
752 | Lisp_Object fontset, tem; | |
753 | int i; | |
754 | ||
755 | name = Fdowncase (name); | |
756 | if (!regexpp) | |
757 | { | |
758 | tem = Frassoc (name, Vfontset_alias_alist); | |
759 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
760 | name = XCAR (tem); | |
761 | else | |
762 | { | |
763 | tem = fontset_pattern_regexp (name); | |
764 | if (STRINGP (tem)) | |
765 | { | |
766 | name = tem; | |
767 | regexpp = 1; | |
768 | } | |
769 | } | |
770 | } | |
771 | ||
772 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
773 | { | |
774 | Lisp_Object fontset; | |
775 | unsigned char *this_name; | |
776 | ||
777 | fontset = FONTSET_FROM_ID (i); | |
778 | if (NILP (fontset) | |
779 | || !BASE_FONTSET_P (fontset)) | |
780 | continue; | |
781 | ||
782 | this_name = XSTRING (FONTSET_NAME (fontset))->data; | |
783 | if (regexpp | |
784 | ? fast_c_string_match_ignore_case (name, this_name) >= 0 | |
785 | : !strcmp (XSTRING (name)->data, this_name)) | |
786 | return i; | |
787 | } | |
788 | return -1; | |
789 | } | |
790 | ||
791 | ||
727fb790 | 792 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
0d407d77 | 793 | "Return the name of a fontset that matches PATTERN.\n\ |
9af3dc47 RS |
794 | The value is nil if there is no matching fontset.\n\ |
795 | PATTERN can contain `*' or `?' as a wildcard\n\ | |
796 | just as X font name matching algorithm allows.\n\ | |
797 | If REGEXPP is non-nil, PATTERN is a regular expression.") | |
727fb790 KH |
798 | (pattern, regexpp) |
799 | Lisp_Object pattern, regexpp; | |
4ed46869 | 800 | { |
0d407d77 KH |
801 | Lisp_Object fontset; |
802 | int id; | |
4ed46869 KH |
803 | |
804 | (*check_window_system_func) (); | |
805 | ||
806 | CHECK_STRING (pattern, 0); | |
807 | ||
808 | if (XSTRING (pattern)->size == 0) | |
809 | return Qnil; | |
810 | ||
0d407d77 KH |
811 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
812 | if (id < 0) | |
813 | return Qnil; | |
4ed46869 | 814 | |
0d407d77 KH |
815 | fontset = FONTSET_FROM_ID (id); |
816 | return FONTSET_NAME (fontset); | |
4ed46869 KH |
817 | } |
818 | ||
0d407d77 KH |
819 | /* Return a list of base fontset names matching PATTERN on frame F. |
820 | If SIZE is not 0, it is the size (maximum bound width) of fontsets | |
821 | to be listed. */ | |
4ed46869 KH |
822 | |
823 | Lisp_Object | |
824 | list_fontsets (f, pattern, size) | |
825 | FRAME_PTR f; | |
826 | Lisp_Object pattern; | |
827 | int size; | |
828 | { | |
0d407d77 KH |
829 | Lisp_Object frame, regexp, val, tail; |
830 | int id; | |
4ed46869 | 831 | |
0d407d77 | 832 | XSETFRAME (frame, f); |
4ed46869 | 833 | |
0d407d77 | 834 | regexp = fontset_pattern_regexp (pattern); |
4ed46869 | 835 | val = Qnil; |
4ed46869 | 836 | |
0d407d77 KH |
837 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
838 | { | |
839 | Lisp_Object fontset; | |
840 | unsigned char *name; | |
841 | ||
842 | fontset = FONTSET_FROM_ID (id); | |
843 | if (NILP (fontset) | |
844 | || !BASE_FONTSET_P (fontset) | |
845 | || !EQ (frame, FONTSET_FRAME (fontset))) | |
846 | continue; | |
847 | name = XSTRING (FONTSET_NAME (fontset))->data; | |
848 | ||
849 | if (!NILP (regexp) | |
850 | ? (fast_c_string_match_ignore_case (regexp, name) < 0) | |
851 | : strcmp (XSTRING (pattern)->data, name)) | |
852 | continue; | |
853 | ||
854 | if (size) | |
4ed46869 | 855 | { |
0d407d77 KH |
856 | struct font_info *fontp; |
857 | fontp = FS_LOAD_FONT (f, 0, NULL, id); | |
858 | if (!fontp || size != fontp->size) | |
859 | continue; | |
4ed46869 | 860 | } |
0d407d77 | 861 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
4ed46869 KH |
862 | } |
863 | ||
864 | return val; | |
865 | } | |
866 | ||
867 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, | |
0d407d77 KH |
868 | "Create a new fontset NAME that contains font information in FONTLIST.\n\ |
869 | FONTLIST is an alist of charsets vs corresponding font name patterns.") | |
4ed46869 KH |
870 | (name, fontlist) |
871 | Lisp_Object name, fontlist; | |
872 | { | |
0d407d77 KH |
873 | Lisp_Object fontset, elements, ascii_font; |
874 | Lisp_Object tem, tail, elt; | |
4ed46869 KH |
875 | |
876 | (*check_window_system_func) (); | |
877 | ||
878 | CHECK_STRING (name, 0); | |
879 | CHECK_LIST (fontlist, 1); | |
880 | ||
0d407d77 KH |
881 | name = Fdowncase (name); |
882 | tem = Fquery_fontset (name, Qnil); | |
883 | if (!NILP (tem)) | |
9af3dc47 | 884 | error ("Fontset `%s' matches the existing fontset `%s'", |
0d407d77 | 885 | XSTRING (name)->data, XSTRING (tem)->data); |
4ed46869 | 886 | |
0d407d77 KH |
887 | /* Check the validity of FONTLIST while creating a template for |
888 | fontset elements. */ | |
889 | elements = ascii_font = Qnil; | |
7539e11f | 890 | for (tail = fontlist; CONSP (tail); tail = XCDR (tail)) |
4ed46869 | 891 | { |
0d407d77 KH |
892 | Lisp_Object family, registry; |
893 | int c, charset; | |
4ed46869 | 894 | |
0d407d77 | 895 | tem = XCAR (tail); |
4ed46869 | 896 | if (!CONSP (tem) |
7539e11f KR |
897 | || (charset = get_charset_id (XCAR (tem))) < 0 |
898 | || !STRINGP (XCDR (tem))) | |
4ed46869 | 899 | error ("Elements of fontlist must be a cons of charset and font name"); |
0d407d77 KH |
900 | |
901 | tem = Fdowncase (XCDR (tem)); | |
902 | if (charset == CHARSET_ASCII) | |
903 | ascii_font = tem; | |
904 | else | |
905 | { | |
906 | c = MAKE_CHAR (charset, 0, 0); | |
907 | elements = Fcons (Fcons (make_number (c), tem), elements); | |
908 | } | |
4ed46869 KH |
909 | } |
910 | ||
0d407d77 KH |
911 | if (NILP (ascii_font)) |
912 | error ("No ASCII font in the fontlist"); | |
4ed46869 | 913 | |
0d407d77 KH |
914 | fontset = make_fontset (Qnil, name, Qnil); |
915 | FONTSET_ASCII (fontset) = Fcons (make_number (0), ascii_font); | |
916 | for (; CONSP (elements); elements = XCDR (elements)) | |
917 | { | |
918 | elt = XCAR (elements); | |
919 | tem = Fcons (XCAR (elt), font_family_registry (XCDR (elt))); | |
920 | FONTSET_SET (fontset, XINT (XCAR (elt)), tem); | |
921 | } | |
4ed46869 KH |
922 | |
923 | return Qnil; | |
924 | } | |
925 | ||
4ed46869 | 926 | |
0d407d77 KH |
927 | /* Clear all elements of FONTSET for multibyte characters. */ |
928 | ||
929 | static void | |
930 | clear_fontset_elements (fontset) | |
931 | Lisp_Object fontset; | |
4ed46869 | 932 | { |
0d407d77 | 933 | int i; |
4ed46869 | 934 | |
0d407d77 KH |
935 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++) |
936 | XCHAR_TABLE (fontset)->contents[i] = Qnil; | |
937 | } | |
4ed46869 | 938 | |
4ed46869 | 939 | |
0d407d77 KH |
940 | /* Check validity of NAME as a fontset name and return the |
941 | corresponding fontset. If not valid, signal an error. | |
942 | If NAME is t, return Vdefault_fontset. */ | |
943 | ||
944 | static Lisp_Object | |
945 | check_fontset_name (name) | |
946 | Lisp_Object name; | |
947 | { | |
948 | int id; | |
949 | ||
950 | if (EQ (name, Qt)) | |
951 | return Vdefault_fontset; | |
4ed46869 | 952 | |
0d407d77 KH |
953 | CHECK_STRING (name, 0); |
954 | id = fs_query_fontset (name, 0); | |
955 | if (id < 0) | |
9af3dc47 | 956 | error ("Fontset `%s' does not exist", XSTRING (name)->data); |
0d407d77 KH |
957 | return FONTSET_FROM_ID (id); |
958 | } | |
4ed46869 | 959 | |
0d407d77 | 960 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0, |
4ea5775b | 961 | "Modify fontset NAME to use FONTNAME for CHARACTER.\n\ |
755f47fe | 962 | \n\ |
4ea5775b | 963 | CHARACTER may be a cons; (FROM . TO), where FROM and TO are\n\ |
755f47fe DL |
964 | non-generic characters. In that case, use FONTNAME\n\ |
965 | for all characters in the range FROM and TO (inclusive).\n\ | |
0890801b KH |
966 | CHARACTER may be a charset. In that case, use FONTNAME\n\ |
967 | for all character in the charsets.\n\ | |
755f47fe | 968 | \n\ |
8a9be3ac KH |
969 | FONTNAME may be a cons; (FAMILY . REGISTRY), where FAMILY is a family\n\ |
970 | name of a font, REGSITRY is a registry name of a font.") | |
4ea5775b KH |
971 | (name, character, fontname, frame) |
972 | Lisp_Object name, character, fontname, frame; | |
0d407d77 KH |
973 | { |
974 | Lisp_Object fontset, elt; | |
975 | Lisp_Object realized; | |
976 | int from, to; | |
977 | int id; | |
8a9be3ac | 978 | Lisp_Object family, registry; |
0d407d77 KH |
979 | |
980 | fontset = check_fontset_name (name); | |
981 | ||
4ea5775b | 982 | if (CONSP (character)) |
0d407d77 KH |
983 | { |
984 | /* CH should be (FROM . TO) where FROM and TO are non-generic | |
985 | characters. */ | |
4ea5775b KH |
986 | CHECK_NUMBER (XCAR (character), 1); |
987 | CHECK_NUMBER (XCDR (character), 1); | |
988 | from = XINT (XCAR (character)); | |
989 | to = XINT (XCDR (character)); | |
0d407d77 KH |
990 | if (!char_valid_p (from, 0) || !char_valid_p (to, 0)) |
991 | error ("Character range should be by non-generic characters."); | |
992 | if (!NILP (name) | |
993 | && (SINGLE_BYTE_CHAR_P (from) || SINGLE_BYTE_CHAR_P (to))) | |
994 | error ("Can't change font for a single byte character"); | |
995 | } | |
0890801b KH |
996 | else if (SYMBOLP (character)) |
997 | { | |
998 | elt = Fget (character, Qcharset); | |
999 | if (!VECTORP (elt) || ASIZE (elt) < 1 || !NATNUMP (AREF (elt, 0))) | |
1000 | error ("Invalid charset: %s", (XSYMBOL (character)->name)->data); | |
1001 | from = MAKE_CHAR (XINT (AREF (elt, 0)), 0, 0); | |
1002 | to = from; | |
1003 | } | |
0d407d77 | 1004 | else |
4ed46869 | 1005 | { |
4ea5775b KH |
1006 | CHECK_NUMBER (character, 1); |
1007 | from = XINT (character); | |
0d407d77 KH |
1008 | to = from; |
1009 | } | |
1010 | if (!char_valid_p (from, 1)) | |
1011 | invalid_character (from); | |
1012 | if (SINGLE_BYTE_CHAR_P (from)) | |
1013 | error ("Can't change font for a single byte character"); | |
1014 | if (from < to) | |
1015 | { | |
1016 | if (!char_valid_p (to, 1)) | |
1017 | invalid_character (to); | |
1018 | if (SINGLE_BYTE_CHAR_P (to)) | |
1019 | error ("Can't change font for a single byte character"); | |
1020 | } | |
4ed46869 | 1021 | |
8a9be3ac | 1022 | if (STRINGP (fontname)) |
0d407d77 | 1023 | { |
8a9be3ac KH |
1024 | fontname = Fdowncase (fontname); |
1025 | elt = Fcons (make_number (from), font_family_registry (fontname)); | |
4ed46869 | 1026 | } |
0d407d77 | 1027 | else |
8a9be3ac KH |
1028 | { |
1029 | CHECK_CONS (fontname, 2); | |
1030 | family = XCAR (fontname); | |
1031 | registry = XCDR (fontname); | |
1032 | if (!NILP (family)) | |
afe93d01 KH |
1033 | { |
1034 | CHECK_STRING (family, 2); | |
1035 | family = Fdowncase (family); | |
1036 | } | |
8a9be3ac | 1037 | if (!NILP (registry)) |
afe93d01 KH |
1038 | { |
1039 | CHECK_STRING (registry, 2); | |
1040 | registry = Fdowncase (registry); | |
1041 | } | |
8a9be3ac KH |
1042 | elt = Fcons (make_number (from), Fcons (family, registry)); |
1043 | } | |
0d407d77 KH |
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 | ||
1ff005e1 KH |
1124 | |
1125 | /* Return the font name for the character at POSITION in the current | |
1126 | buffer. This is computed from all the text properties and overlays | |
1127 | that apply to POSITION. It returns nil in the following cases: | |
1128 | ||
1129 | (1) The window system doesn't have a font for the character (thus | |
1130 | it is displayed by an empty box). | |
1131 | ||
1132 | (2) The character code is invalid. | |
1133 | ||
1134 | (3) The current buffer is not displayed in any window. | |
1135 | ||
1136 | In addition, the returned font name may not take into account of | |
1137 | such redisplay engine hooks as what used in jit-lock-mode if | |
1138 | POSITION is currently not visible. */ | |
1139 | ||
1140 | ||
1141 | DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 1, 0, | |
1142 | "For internal use only.") | |
1143 | (position) | |
1144 | Lisp_Object position; | |
1145 | { | |
1146 | int pos, pos_byte, dummy; | |
1147 | int face_id; | |
1148 | int c; | |
1149 | Lisp_Object window; | |
1150 | struct window *w; | |
1151 | struct frame *f; | |
1152 | struct face *face; | |
1153 | ||
1154 | CHECK_NUMBER_COERCE_MARKER (position, 0); | |
1155 | pos = XINT (position); | |
1156 | if (pos < BEGV || pos >= ZV) | |
1157 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); | |
1158 | pos_byte = CHAR_TO_BYTE (pos); | |
1159 | c = FETCH_CHAR (pos_byte); | |
1160 | if (! CHAR_VALID_P (c, 0)) | |
1161 | return Qnil; | |
851ab85e | 1162 | window = Fget_buffer_window (Fcurrent_buffer (), Qnil); |
1ff005e1 KH |
1163 | if (NILP (window)) |
1164 | return Qnil; | |
1165 | w = XWINDOW (window); | |
1166 | f = XFRAME (w->frame); | |
1167 | face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0); | |
1168 | face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c); | |
1169 | face = FACE_FROM_ID (f, face_id); | |
1170 | return (face->font && face->font_name | |
1171 | ? build_string (face->font_name) | |
1172 | : Qnil); | |
1173 | } | |
1174 | ||
1175 | ||
1176 | /* Called from Ffontset_info via map_char_table on each leaf of | |
1177 | fontset. ARG is a list (LAST FONT-INFO ...), where LAST is `(last | |
1178 | ARG)' and FONT-INFOs have this form: | |
1179 | (CHAR FONT-SPEC) or ((FROM . TO) FONT-SPEC) | |
1180 | The current leaf is indexed by CHARACTER and has value ELT. This | |
1181 | function add the information of the current leaf to ARG by | |
1182 | appending a new element or modifying the last element.. */ | |
1183 | ||
1184 | static void | |
1185 | accumulate_font_info (arg, character, elt) | |
1186 | Lisp_Object arg, character, elt; | |
1187 | { | |
1188 | Lisp_Object last, last_char, last_elt, tmp; | |
1189 | ||
11d9bd93 KH |
1190 | if (!CONSP (elt) && !SINGLE_BYTE_CHAR_P (XINT (character))) |
1191 | elt = FONTSET_REF (Vdefault_fontset, XINT (character)); | |
1ff005e1 KH |
1192 | if (!CONSP (elt)) |
1193 | return; | |
1194 | last = XCAR (arg); | |
1195 | last_char = XCAR (XCAR (last)); | |
1196 | last_elt = XCAR (XCDR (XCAR (last))); | |
1197 | elt = XCDR (elt); | |
1198 | if (!NILP (Fequal (elt, last_elt))) | |
1199 | { | |
1200 | int this_charset = CHAR_CHARSET (XINT (character)); | |
1201 | ||
1202 | if (CONSP (last_char)) /* LAST_CHAR == (FROM . TO) */ | |
1203 | { | |
1204 | if (this_charset == CHAR_CHARSET (XINT (XCAR (last_char)))) | |
1205 | { | |
1206 | XCDR (last_char) = character; | |
1207 | return; | |
1208 | } | |
1209 | } | |
11d9bd93 KH |
1210 | else if (XINT (last_char) == XINT (character)) |
1211 | return; | |
1212 | else if (this_charset == CHAR_CHARSET (XINT (last_char))) | |
1ff005e1 | 1213 | { |
11d9bd93 KH |
1214 | XCAR (XCAR (last)) = Fcons (last_char, character); |
1215 | return; | |
1ff005e1 KH |
1216 | } |
1217 | } | |
1218 | XCDR (last) = Fcons (Fcons (character, Fcons (elt, Qnil)), Qnil); | |
1219 | XCAR (arg) = XCDR (last); | |
1220 | } | |
1221 | ||
1222 | ||
4ed46869 KH |
1223 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, |
1224 | "Return information about a fontset named NAME on frame FRAME.\n\ | |
a921395d KH |
1225 | The value is a vector:\n\ |
1226 | [ SIZE HEIGHT ((CHARSET-OR-RANGE FONT-SPEC OPENED ...) ...) ],\n\ | |
1ff005e1 | 1227 | where,\n\ |
a921395d KH |
1228 | SIZE is the maximum bound width of ASCII font in the fontset,\n\ |
1229 | HEIGHT is the maximum bound height of ASCII font in the fontset,\n\ | |
63dffd51 | 1230 | CHARSET-OR-RANGE is a charset, a character (may be a generic character)\n\ |
06e6aef0 | 1231 | or a cons of two characters specifying the range of characters.\n\ |
1ff005e1 KH |
1232 | FONT-SPEC is a fontname pattern string or a cons (FAMILY . REGISTRY),\n\ |
1233 | where FAMILY is a `FAMILY' field of a XLFD font name,\n\ | |
1234 | REGISTRY is a `CHARSET_REGISTRY' field of a XLDF font name.\n\ | |
1235 | FAMILY may contain a `FOUNDARY' field at the head.\n\ | |
1236 | REGISTRY may contain a `CHARSET_ENCODING' field at the tail.\n\ | |
1237 | OPENEDs are names of fonts actually opened.\n\ | |
a921395d | 1238 | If the ASCII font is not yet opened, SIZE and HEIGHT are 0.\n\ |
1ff005e1 | 1239 | If FRAME is omitted, it defaults to the currently selected frame.") |
4ed46869 KH |
1240 | (name, frame) |
1241 | Lisp_Object name, frame; | |
1242 | { | |
1ff005e1 | 1243 | Lisp_Object fontset; |
4ed46869 | 1244 | FRAME_PTR f; |
1ff005e1 KH |
1245 | Lisp_Object indices[3]; |
1246 | Lisp_Object val, tail, elt; | |
1247 | Lisp_Object *realized; | |
a921395d | 1248 | struct font_info *fontp = NULL; |
1ff005e1 | 1249 | int n_realized = 0; |
4ed46869 KH |
1250 | int i; |
1251 | ||
1252 | (*check_window_system_func) (); | |
1253 | ||
0d407d77 KH |
1254 | fontset = check_fontset_name (name); |
1255 | ||
4ed46869 | 1256 | if (NILP (frame)) |
18f39d0e GM |
1257 | frame = selected_frame; |
1258 | CHECK_LIVE_FRAME (frame, 1); | |
1259 | f = XFRAME (frame); | |
4ed46869 | 1260 | |
11d9bd93 | 1261 | /* Recode realized fontsets whose base is FONTSET in the table |
1ff005e1 KH |
1262 | `realized'. */ |
1263 | realized = (Lisp_Object *) alloca (sizeof (Lisp_Object) | |
1264 | * ASIZE (Vfontset_table)); | |
0d407d77 KH |
1265 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
1266 | { | |
1ff005e1 KH |
1267 | elt = FONTSET_FROM_ID (i); |
1268 | if (!NILP (elt) | |
1269 | && EQ (FONTSET_BASE (elt), fontset)) | |
1270 | realized[n_realized++] = elt; | |
0d407d77 | 1271 | } |
4ed46869 | 1272 | |
1ff005e1 KH |
1273 | /* Accumulate information of the fontset in VAL. The format is |
1274 | (LAST FONT-INFO FONT-INFO ...), where FONT-INFO is (CHAR-OR-RANGE | |
1275 | FONT-SPEC). See the comment for accumulate_font_info for the | |
1276 | detail. */ | |
1277 | val = Fcons (Fcons (make_number (0), | |
1278 | Fcons (XCDR (FONTSET_ASCII (fontset)), Qnil)), | |
0d407d77 | 1279 | Qnil); |
1ff005e1 KH |
1280 | val = Fcons (val, val); |
1281 | map_char_table (accumulate_font_info, Qnil, fontset, val, 0, indices); | |
1282 | val = XCDR (val); | |
1283 | ||
1284 | /* For each FONT-INFO, if CHAR_OR_RANGE (car part) is a generic | |
11d9bd93 | 1285 | character for a charset, replace it with the charset symbol. If |
1ff005e1 KH |
1286 | fonts are opened for FONT-SPEC, append the names of the fonts to |
1287 | FONT-SPEC. */ | |
1288 | for (tail = val; CONSP (tail); tail = XCDR (tail)) | |
0d407d77 | 1289 | { |
1ff005e1 KH |
1290 | int c; |
1291 | elt = XCAR (tail); | |
1292 | if (INTEGERP (XCAR (elt))) | |
0d407d77 | 1293 | { |
1ff005e1 KH |
1294 | int charset, c1, c2; |
1295 | c = XINT (XCAR (elt)); | |
1296 | SPLIT_CHAR (c, charset, c1, c2); | |
1297 | if (c1 == 0) | |
1298 | XCAR (elt) = CHARSET_SYMBOL (charset); | |
1299 | } | |
1300 | else | |
1301 | c = XINT (XCAR (XCAR (elt))); | |
1302 | for (i = 0; i < n_realized; i++) | |
1303 | { | |
1304 | Lisp_Object face_id, font; | |
0d407d77 KH |
1305 | struct face *face; |
1306 | ||
1ff005e1 KH |
1307 | face_id = FONTSET_REF_VIA_BASE (realized[i], c); |
1308 | if (INTEGERP (face_id)) | |
0d407d77 | 1309 | { |
1ff005e1 KH |
1310 | face = FACE_FROM_ID (f, XINT (face_id)); |
1311 | if (face->font && face->font_name) | |
1312 | { | |
1313 | font = build_string (face->font_name); | |
1314 | if (NILP (Fmember (font, XCDR (XCDR (elt))))) | |
1315 | XCDR (XCDR (elt)) = Fcons (font, XCDR (XCDR (elt))); | |
1316 | } | |
0d407d77 | 1317 | } |
0d407d77 KH |
1318 | } |
1319 | } | |
a921395d KH |
1320 | |
1321 | elt = Fcdr (Fcdr (Fassq (CHARSET_SYMBOL (CHARSET_ASCII), val))); | |
1322 | if (CONSP (elt)) | |
1323 | { | |
1324 | elt = XCAR (elt); | |
1325 | fontp = (*query_font_func) (f, XSTRING (elt)->data); | |
1326 | } | |
1327 | val = Fmake_vector (make_number (3), val); | |
1328 | AREF (val, 0) = fontp ? make_number (fontp->size) : make_number (0); | |
1329 | AREF (val, 1) = fontp ? make_number (fontp->height) : make_number (0); | |
1330 | return val; | |
4ed46869 KH |
1331 | } |
1332 | ||
0d407d77 | 1333 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 2, 0, |
755f47fe | 1334 | "Return a font name pattern for character CH in fontset NAME.\n\ |
0d407d77 KH |
1335 | If NAME is t, find a font name pattern in the default fontset.") |
1336 | (name, ch) | |
1337 | Lisp_Object name, ch; | |
1338 | { | |
1339 | int c, id; | |
1340 | Lisp_Object fontset, elt; | |
1341 | ||
1342 | fontset = check_fontset_name (name); | |
1343 | ||
1344 | CHECK_NUMBER (ch, 1); | |
1345 | c = XINT (ch); | |
1346 | if (!char_valid_p (c, 1)) | |
1347 | invalid_character (c); | |
1348 | ||
1349 | elt = FONTSET_REF (fontset, c); | |
1350 | if (CONSP (elt)) | |
1351 | elt = XCDR (elt); | |
1352 | ||
1353 | return elt; | |
1354 | } | |
1355 | ||
1356 | ||
1357 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, | |
1358 | "Return a list of all defined fontset names.") | |
1359 | () | |
1360 | { | |
1361 | Lisp_Object fontset, list; | |
1362 | int i; | |
1363 | ||
1364 | list = Qnil; | |
1365 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
1366 | { | |
1367 | fontset = FONTSET_FROM_ID (i); | |
1368 | if (!NILP (fontset) | |
1369 | && BASE_FONTSET_P (fontset)) | |
1370 | list = Fcons (FONTSET_NAME (fontset), list); | |
1371 | } | |
1ff005e1 | 1372 | |
0d407d77 KH |
1373 | return list; |
1374 | } | |
1375 | ||
dfcf069d | 1376 | void |
4ed46869 KH |
1377 | syms_of_fontset () |
1378 | { | |
1379 | int i; | |
1380 | ||
4ed46869 KH |
1381 | if (!load_font_func) |
1382 | /* Window system initializer should have set proper functions. */ | |
1383 | abort (); | |
1384 | ||
6a7e6d80 | 1385 | Qfontset = intern ("fontset"); |
4ed46869 | 1386 | staticpro (&Qfontset); |
0d407d77 | 1387 | Fput (Qfontset, Qchar_table_extra_slots, make_number (3)); |
4ed46869 KH |
1388 | |
1389 | Vcached_fontset_data = Qnil; | |
1390 | staticpro (&Vcached_fontset_data); | |
1391 | ||
0d407d77 KH |
1392 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
1393 | staticpro (&Vfontset_table); | |
0d407d77 KH |
1394 | |
1395 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); | |
1396 | staticpro (&Vdefault_fontset); | |
1ff005e1 KH |
1397 | FONTSET_ID (Vdefault_fontset) = make_number (0); |
1398 | FONTSET_NAME (Vdefault_fontset) | |
1399 | = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"); | |
82d9a3b9 | 1400 | #if defined (macintosh) |
1a578e9b AC |
1401 | FONTSET_ASCII (Vdefault_fontset) |
1402 | = Fcons (make_number (0), | |
1403 | build_string ("-apple-monaco-medium-r-*--*-120-*-*-*-*-mac-roman")); | |
82d9a3b9 JR |
1404 | #elif defined (WINDOWSNT) |
1405 | FONTSET_ASCII (Vdefault_fontset) | |
1406 | = Fcons (make_number (0), | |
842c80a3 | 1407 | build_string ("-*-courier new-normal-r-*-*-*-100-*-*-*-*-iso8859-1")); |
1a578e9b | 1408 | #else |
0d407d77 | 1409 | FONTSET_ASCII (Vdefault_fontset) |
afc125e1 KH |
1410 | = Fcons (make_number (0), |
1411 | build_string ("-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1")); | |
1a578e9b | 1412 | #endif |
1ff005e1 KH |
1413 | AREF (Vfontset_table, 0) = Vdefault_fontset; |
1414 | next_fontset_id = 1; | |
4ed46869 KH |
1415 | |
1416 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, | |
1417 | "Alist of fontname patterns vs corresponding encoding info.\n\ | |
1418 | Each element looks like (REGEXP . ENCODING-INFO),\n\ | |
1419 | where ENCODING-INFO is an alist of CHARSET vs ENCODING.\n\ | |
1420 | ENCODING is one of the following integer values:\n\ | |
1421 | 0: code points 0x20..0x7F or 0x2020..0x7F7F are used,\n\ | |
1422 | 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used,\n\ | |
1423 | 2: code points 0x20A0..0x7FFF are used,\n\ | |
1424 | 3: code points 0xA020..0xFF7F are used."); | |
1425 | Vfont_encoding_alist = Qnil; | |
1426 | ||
6a7e6d80 | 1427 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
fc891591 | 1428 | "Char table of characters whose ascent values should be ignored.\n\ |
6a7e6d80 | 1429 | If an entry for a character is non-nil, the ascent value of the glyph\n\ |
2aeafb78 KH |
1430 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font.\n\ |
1431 | \n\ | |
1432 | This affects how a composite character which contains\n\ | |
1433 | such a character is displayed on screen."); | |
1434 | Vuse_default_ascent = Qnil; | |
1435 | ||
1436 | DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition, | |
1437 | "Char table of characters which is not composed relatively.\n\ | |
810abb87 | 1438 | If an entry for a character is non-nil, a composition sequence\n\ |
2aeafb78 KH |
1439 | which contains that character is displayed so that\n\ |
1440 | the glyph of that character is put without considering\n\ | |
1441 | an ascent and descent value of a previous character."); | |
810abb87 | 1442 | Vignore_relative_composition = Qnil; |
6a7e6d80 | 1443 | |
01d4b817 KH |
1444 | DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist, |
1445 | "Alist of fontname vs list of the alternate fontnames.\n\ | |
fc891591 | 1446 | When a specified font name is not found, the corresponding\n\ |
01d4b817 KH |
1447 | alternate fontnames (if any) are tried instead."); |
1448 | Valternate_fontname_alist = Qnil; | |
8c83e4f9 | 1449 | |
1c283e35 KH |
1450 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
1451 | "Alist of fontset names vs the aliases."); | |
1ff005e1 KH |
1452 | Vfontset_alias_alist = Fcons (Fcons (FONTSET_NAME (Vdefault_fontset), |
1453 | build_string ("fontset-default")), | |
1454 | Qnil); | |
1c283e35 | 1455 | |
ec3bb068 KH |
1456 | DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font, |
1457 | "*Non-nil means highlight characters shown in wrong size fonts somehow.\n\ | |
1458 | The way to highlight them depends on window system on which Emacs runs.\n\ | |
fc891591 | 1459 | On X11, a rectangle is shown around each such character."); |
e3ee2a8a | 1460 | Vhighlight_wrong_size_font = Qnil; |
ec3bb068 KH |
1461 | |
1462 | DEFVAR_LISP ("clip-large-size-font", &Vclip_large_size_font, | |
fc891591 | 1463 | "*Non-nil means characters shown in overlarge fonts are clipped.\n\ |
1c283e35 | 1464 | The height of clipping area is the same as that of an ASCII character.\n\ |
fc891591 RS |
1465 | The width of the area is the same as that of an ASCII character,\n\ |
1466 | or twice as wide, depending on the character set's column-width.\n\ | |
1c283e35 | 1467 | \n\ |
fc891591 RS |
1468 | If the only font you have for a specific character set is too large,\n\ |
1469 | and clipping these characters makes them hard to read,\n\ | |
1470 | you can set this variable to nil to display the characters without clipping.\n\ | |
1471 | The drawback is that you will get some garbage left on your screen."); | |
ec3bb068 KH |
1472 | Vclip_large_size_font = Qt; |
1473 | ||
810abb87 KH |
1474 | DEFVAR_LISP ("vertical-centering-font-regexp", |
1475 | &Vvertical_centering_font_regexp, | |
1476 | "*Regexp matching font names that require vertical centering on display.\n\ | |
1477 | When a character is displayed with such fonts, the character is displayed\n\ | |
1478 | at the vertival center of lines."); | |
1479 | Vvertical_centering_font_regexp = Qnil; | |
1480 | ||
4ed46869 KH |
1481 | defsubr (&Squery_fontset); |
1482 | defsubr (&Snew_fontset); | |
1483 | defsubr (&Sset_fontset_font); | |
1484 | defsubr (&Sfont_info); | |
1ff005e1 | 1485 | defsubr (&Sinternal_char_font); |
4ed46869 | 1486 | defsubr (&Sfontset_info); |
0d407d77 KH |
1487 | defsubr (&Sfontset_font); |
1488 | defsubr (&Sfontset_list); | |
4ed46869 | 1489 | } |