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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" | |
4ed46869 | 34 | #include "frame.h" |
0d407d77 | 35 | #include "dispextern.h" |
3541bb8f | 36 | #include "fontset.h" |
0d407d77 KH |
37 | #include "window.h" |
38 | ||
39 | #ifdef FONTSET_DEBUG | |
40 | #undef xassert | |
41 | #define xassert(X) do {if (!(X)) abort ();} while (0) | |
42 | #undef INLINE | |
43 | #define INLINE | |
44 | #endif | |
45 | ||
46 | ||
47 | /* FONTSET | |
48 | ||
49 | A fontset is a collection of font related information to give | |
50 | similar appearance (style, size, etc) of characters. There are two | |
51 | kinds of fontsets; base and realized. A base fontset is created by | |
52 | new-fontset from Emacs Lisp explicitly. A realized fontset is | |
53 | created implicitly when a face is realized for ASCII characters. A | |
54 | face is also realized for multibyte characters based on an ASCII | |
55 | face. All of the multibyte faces based on the same ASCII face | |
56 | share the same realized fontset. | |
57 | ||
58 | A fontset object is implemented by a char-table. | |
59 | ||
60 | An element of a base fontset is: | |
61 | (INDEX . FONTNAME) or | |
62 | (INDEX . (FOUNDRY . REGISTRY )) | |
63 | FONTNAME is a font name pattern for the corresponding character. | |
64 | FOUNDRY and REGISTRY are respectively foundy and regisry fields of | |
65 | a font name for the corresponding character. INDEX specifies for | |
66 | which character (or generic character) the element is defined. It | |
67 | may be different from an index to access this element. For | |
68 | instance, if a fontset defines some font for all characters of | |
69 | charset `japanese-jisx0208', INDEX is the generic character of this | |
70 | charset. REGISTRY is the | |
71 | ||
72 | An element of a realized fontset is FACE-ID which is a face to use | |
73 | for displaying the correspnding character. | |
74 | ||
75 | All single byte charaters (ASCII and 8bit-unibyte) share the same | |
76 | element in a fontset. The element is stored in `defalt' slot of | |
77 | the fontset. And this slot is never used as a default value of | |
78 | multibyte characters. That means that the first 256 elements of a | |
1ff005e1 KH |
79 | fontset are always nil (as this is not efficient, we may implement |
80 | a fontset in a different way in the future). | |
0d407d77 KH |
81 | |
82 | To access or set each element, use macros FONTSET_REF and | |
83 | FONTSET_SET respectively for efficiency. | |
84 | ||
85 | A fontset has 3 extra slots. | |
86 | ||
87 | The 1st slot is an ID number of the fontset. | |
88 | ||
89 | The 2nd slot is a name of the fontset. This is nil for a realized | |
90 | face. | |
91 | ||
92 | The 3rd slot is a frame that the fontset belongs to. This is nil | |
93 | for a default face. | |
94 | ||
95 | A parent of a base fontset is nil. A parent of a realized fontset | |
96 | is a base fontset. | |
97 | ||
98 | All fontsets (except for the default fontset described below) are | |
99 | recorded in Vfontset_table. | |
100 | ||
101 | ||
102 | DEFAULT FONTSET | |
103 | ||
104 | There's a special fontset named `default fontset' which defines a | |
105 | default fontname that contains only REGISTRY field for each | |
106 | character. When a base fontset doesn't specify a font for a | |
107 | specific character, the corresponding value in the default fontset | |
108 | is used. The format is the same as a base fontset. | |
109 | ||
110 | The parent of realized fontsets created for faces that have no | |
111 | fontset is the default fontset. | |
112 | ||
113 | ||
114 | These structures are hidden from the other codes than this file. | |
115 | The other codes handle fontsets only by their ID numbers. They | |
116 | usually use variable name `fontset' for IDs. But, in this file, we | |
117 | always use varialbe name `id' for IDs, and name `fontset' for the | |
118 | actual fontset objects. | |
119 | ||
120 | */ | |
121 | ||
122 | /********** VARIABLES and FUNCTION PROTOTYPES **********/ | |
123 | ||
124 | extern Lisp_Object Qfont; | |
125 | Lisp_Object Qfontset; | |
126 | ||
127 | /* Vector containing all fontsets. */ | |
128 | static Lisp_Object Vfontset_table; | |
129 | ||
130 | /* Next possibly free fontset ID. Usually this keeps the mininum | |
131 | fontset ID not yet used. */ | |
132 | static int next_fontset_id; | |
133 | ||
134 | /* The default fontset. This gives default FAMILY and REGISTRY of | |
135 | font for each characters. */ | |
136 | static Lisp_Object Vdefault_fontset; | |
4ed46869 | 137 | |
4ed46869 | 138 | Lisp_Object Vfont_encoding_alist; |
6a7e6d80 | 139 | Lisp_Object Vuse_default_ascent; |
2aeafb78 | 140 | Lisp_Object Vignore_relative_composition; |
01d4b817 | 141 | Lisp_Object Valternate_fontname_alist; |
1c283e35 | 142 | Lisp_Object Vfontset_alias_alist; |
ec3bb068 KH |
143 | Lisp_Object Vhighlight_wrong_size_font; |
144 | Lisp_Object Vclip_large_size_font; | |
810abb87 | 145 | Lisp_Object Vvertical_centering_font_regexp; |
4ed46869 | 146 | |
0d407d77 KH |
147 | /* The following six are declarations of callback functions depending |
148 | on window system. See the comments in src/fontset.h for more | |
149 | detail. */ | |
4ed46869 KH |
150 | |
151 | /* Return a pointer to struct font_info of font FONT_IDX of frame F. */ | |
5771dcf4 | 152 | struct font_info *(*get_font_info_func) P_ ((FRAME_PTR f, int font_idx)); |
4ed46869 KH |
153 | |
154 | /* Return a list of font names which matches PATTERN. See the document of | |
155 | `x-list-fonts' for more detail. */ | |
3541bb8f KH |
156 | Lisp_Object (*list_fonts_func) P_ ((struct frame *f, |
157 | Lisp_Object pattern, | |
158 | int size, | |
159 | int maxnames)); | |
4ed46869 KH |
160 | |
161 | /* Load a font named NAME for frame F and return a pointer to the | |
162 | information of the loaded font. If loading is failed, return 0. */ | |
5771dcf4 | 163 | struct font_info *(*load_font_func) P_ ((FRAME_PTR f, char *name, int)); |
4ed46869 KH |
164 | |
165 | /* Return a pointer to struct font_info of a font named NAME for frame F. */ | |
5771dcf4 | 166 | struct font_info *(*query_font_func) P_ ((FRAME_PTR f, char *name)); |
4ed46869 KH |
167 | |
168 | /* Additional function for setting fontset or changing fontset | |
169 | contents of frame F. */ | |
5771dcf4 AS |
170 | void (*set_frame_fontset_func) P_ ((FRAME_PTR f, Lisp_Object arg, |
171 | Lisp_Object oldval)); | |
4ed46869 | 172 | |
727fb790 KH |
173 | /* To find a CCL program, fs_load_font calls this function. |
174 | The argument is a pointer to the struct font_info. | |
175 | This function set the memer `encoder' of the structure. */ | |
176 | void (*find_ccl_program_func) P_ ((struct font_info *)); | |
177 | ||
4ed46869 | 178 | /* Check if any window system is used now. */ |
5771dcf4 | 179 | void (*check_window_system_func) P_ ((void)); |
4ed46869 | 180 | |
0d407d77 KH |
181 | |
182 | /* Prototype declarations for static functions. */ | |
183 | static Lisp_Object fontset_ref P_ ((Lisp_Object, int)); | |
184 | static void fontset_set P_ ((Lisp_Object, int, Lisp_Object)); | |
185 | static Lisp_Object make_fontset P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); | |
186 | static int fontset_id_valid_p P_ ((int)); | |
187 | static Lisp_Object fontset_pattern_regexp P_ ((Lisp_Object)); | |
188 | static Lisp_Object font_family_registry P_ ((Lisp_Object)); | |
189 | ||
190 | \f | |
191 | /********** MACROS AND FUNCTIONS TO HANDLE FONTSET **********/ | |
192 | ||
193 | /* Macros for Lisp vector. */ | |
194 | #define AREF(V, IDX) XVECTOR (V)->contents[IDX] | |
195 | #define ASIZE(V) XVECTOR (V)->size | |
196 | ||
197 | /* Return the fontset with ID. No check of ID's validness. */ | |
198 | #define FONTSET_FROM_ID(id) AREF (Vfontset_table, id) | |
199 | ||
200 | /* Macros to access extra, default, and parent slots, of fontset. */ | |
201 | #define FONTSET_ID(fontset) XCHAR_TABLE (fontset)->extras[0] | |
202 | #define FONTSET_NAME(fontset) XCHAR_TABLE (fontset)->extras[1] | |
203 | #define FONTSET_FRAME(fontset) XCHAR_TABLE (fontset)->extras[2] | |
204 | #define FONTSET_ASCII(fontset) XCHAR_TABLE (fontset)->defalt | |
205 | #define FONTSET_BASE(fontset) XCHAR_TABLE (fontset)->parent | |
206 | ||
207 | #define BASE_FONTSET_P(fontset) NILP (FONTSET_BASE(fontset)) | |
208 | ||
209 | ||
210 | /* Return the element of FONTSET (char-table) at index C (character). */ | |
211 | ||
212 | #define FONTSET_REF(fontset, c) fontset_ref (fontset, c) | |
213 | ||
214 | static INLINE Lisp_Object | |
215 | fontset_ref (fontset, c) | |
216 | Lisp_Object fontset; | |
217 | int c; | |
218 | { | |
219 | int charset, c1, c2; | |
220 | Lisp_Object elt, defalt; | |
221 | int i; | |
222 | ||
223 | if (SINGLE_BYTE_CHAR_P (c)) | |
224 | return FONTSET_ASCII (fontset); | |
225 | ||
f55d03b1 | 226 | SPLIT_CHAR (c, charset, c1, c2); |
0d407d77 KH |
227 | elt = XCHAR_TABLE (fontset)->contents[charset + 128]; |
228 | if (!SUB_CHAR_TABLE_P (elt)) | |
229 | return elt; | |
230 | defalt = XCHAR_TABLE (elt)->defalt; | |
231 | if (c1 < 32 | |
232 | || (elt = XCHAR_TABLE (elt)->contents[c1], | |
233 | NILP (elt))) | |
234 | return defalt; | |
235 | if (!SUB_CHAR_TABLE_P (elt)) | |
236 | return elt; | |
237 | defalt = XCHAR_TABLE (elt)->defalt; | |
238 | if (c2 < 32 | |
239 | || (elt = XCHAR_TABLE (elt)->contents[c2], | |
240 | NILP (elt))) | |
241 | return defalt; | |
242 | return elt; | |
243 | } | |
244 | ||
245 | ||
246 | #define FONTSET_REF_VIA_BASE(fontset, c) fontset_ref_via_base (fontset, &c) | |
247 | ||
248 | static INLINE Lisp_Object | |
249 | fontset_ref_via_base (fontset, c) | |
250 | Lisp_Object fontset; | |
251 | int *c; | |
252 | { | |
253 | int charset, c1, c2; | |
254 | Lisp_Object elt; | |
0d407d77 KH |
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)); | |
f55d03b1 | 264 | SPLIT_CHAR (*c, charset, c1, c2); |
0d407d77 KH |
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 | ||
f55d03b1 | 299 | SPLIT_CHAR (c, charset, code[0], code[1]); |
0d407d77 KH |
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); | |
f3231837 | 519 | return XINT (FONTSET_ID (fontset)); |
0d407d77 KH |
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 | ||
40292c8a KH |
658 | fontname = fontp->full_name; |
659 | /* By default, encoding of ASCII chars is 0 (i.e. 0x00..0x7F), | |
660 | others is 1 (i.e. 0x80..0xFF). */ | |
661 | fontp->encoding[0] = 0; | |
467e7675 | 662 | for (i = MIN_CHARSET_OFFICIAL_DIMENSION1; i <= MAX_CHARSET; i++) |
4ed46869 KH |
663 | fontp->encoding[i] = 1; |
664 | /* Then override them by a specification in Vfont_encoding_alist. */ | |
7539e11f | 665 | for (list = Vfont_encoding_alist; CONSP (list); list = XCDR (list)) |
4ed46869 | 666 | { |
7539e11f | 667 | elt = XCAR (list); |
4ed46869 | 668 | if (CONSP (elt) |
7539e11f KR |
669 | && STRINGP (XCAR (elt)) && CONSP (XCDR (elt)) |
670 | && (fast_c_string_match_ignore_case (XCAR (elt), fontname) | |
4ed46869 KH |
671 | >= 0)) |
672 | { | |
673 | Lisp_Object tmp; | |
674 | ||
7539e11f KR |
675 | for (tmp = XCDR (elt); CONSP (tmp); tmp = XCDR (tmp)) |
676 | if (CONSP (XCAR (tmp)) | |
677 | && ((i = get_charset_id (XCAR (XCAR (tmp)))) | |
4ed46869 | 678 | >= 0) |
7539e11f KR |
679 | && INTEGERP (XCDR (XCAR (tmp))) |
680 | && XFASTINT (XCDR (XCAR (tmp))) < 4) | |
4ed46869 | 681 | fontp->encoding[i] |
7539e11f | 682 | = XFASTINT (XCDR (XCAR (tmp))); |
4ed46869 KH |
683 | } |
684 | } | |
685 | } | |
686 | ||
687 | fontp->font_encoder = (struct ccl_program *) 0; | |
727fb790 KH |
688 | |
689 | if (find_ccl_program_func) | |
690 | (*find_ccl_program_func) (fontp); | |
4ed46869 | 691 | |
1ff005e1 KH |
692 | /* If we loaded a font for a face that has fontset, record the face |
693 | ID in the fontset for C. */ | |
694 | if (face | |
695 | && !NILP (fontset) | |
696 | && !BASE_FONTSET_P (fontset)) | |
697 | FONTSET_SET (fontset, c, make_number (face->id)); | |
4ed46869 KH |
698 | return fontp; |
699 | } | |
700 | ||
0d407d77 | 701 | \f |
4ed46869 KH |
702 | /* Cache data used by fontset_pattern_regexp. The car part is a |
703 | pattern string containing at least one wild card, the cdr part is | |
704 | the corresponding regular expression. */ | |
705 | static Lisp_Object Vcached_fontset_data; | |
706 | ||
7539e11f KR |
707 | #define CACHED_FONTSET_NAME (XSTRING (XCAR (Vcached_fontset_data))->data) |
708 | #define CACHED_FONTSET_REGEX (XCDR (Vcached_fontset_data)) | |
4ed46869 KH |
709 | |
710 | /* If fontset name PATTERN contains any wild card, return regular | |
711 | expression corresponding to PATTERN. */ | |
712 | ||
0d407d77 | 713 | static Lisp_Object |
4ed46869 KH |
714 | fontset_pattern_regexp (pattern) |
715 | Lisp_Object pattern; | |
716 | { | |
4ed46869 KH |
717 | if (!index (XSTRING (pattern)->data, '*') |
718 | && !index (XSTRING (pattern)->data, '?')) | |
719 | /* PATTERN does not contain any wild cards. */ | |
1c283e35 | 720 | return Qnil; |
4ed46869 KH |
721 | |
722 | if (!CONSP (Vcached_fontset_data) | |
723 | || strcmp (XSTRING (pattern)->data, CACHED_FONTSET_NAME)) | |
724 | { | |
725 | /* We must at first update the cached data. */ | |
1c283e35 | 726 | char *regex = (char *) alloca (XSTRING (pattern)->size * 2); |
4ed46869 KH |
727 | char *p0, *p1 = regex; |
728 | ||
1c283e35 KH |
729 | /* Convert "*" to ".*", "?" to ".". */ |
730 | *p1++ = '^'; | |
ea5239ec | 731 | for (p0 = (char *) XSTRING (pattern)->data; *p0; p0++) |
4ed46869 | 732 | { |
1c283e35 | 733 | if (*p0 == '*') |
4ed46869 | 734 | { |
1c283e35 KH |
735 | *p1++ = '.'; |
736 | *p1++ = '*'; | |
4ed46869 | 737 | } |
1c283e35 | 738 | else if (*p0 == '?') |
d96d677d | 739 | *p1++ = '.'; |
1c283e35 KH |
740 | else |
741 | *p1++ = *p0; | |
4ed46869 KH |
742 | } |
743 | *p1++ = '$'; | |
744 | *p1++ = 0; | |
745 | ||
746 | Vcached_fontset_data = Fcons (build_string (XSTRING (pattern)->data), | |
747 | build_string (regex)); | |
748 | } | |
749 | ||
750 | return CACHED_FONTSET_REGEX; | |
751 | } | |
752 | ||
0d407d77 KH |
753 | /* Return ID of the base fontset named NAME. If there's no such |
754 | fontset, return -1. */ | |
755 | ||
756 | int | |
757 | fs_query_fontset (name, regexpp) | |
758 | Lisp_Object name; | |
759 | int regexpp; | |
760 | { | |
761 | Lisp_Object fontset, tem; | |
762 | int i; | |
763 | ||
764 | name = Fdowncase (name); | |
765 | if (!regexpp) | |
766 | { | |
767 | tem = Frassoc (name, Vfontset_alias_alist); | |
768 | if (CONSP (tem) && STRINGP (XCAR (tem))) | |
769 | name = XCAR (tem); | |
770 | else | |
771 | { | |
772 | tem = fontset_pattern_regexp (name); | |
773 | if (STRINGP (tem)) | |
774 | { | |
775 | name = tem; | |
776 | regexpp = 1; | |
777 | } | |
778 | } | |
779 | } | |
780 | ||
781 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
782 | { | |
783 | Lisp_Object fontset; | |
784 | unsigned char *this_name; | |
785 | ||
786 | fontset = FONTSET_FROM_ID (i); | |
787 | if (NILP (fontset) | |
788 | || !BASE_FONTSET_P (fontset)) | |
789 | continue; | |
790 | ||
791 | this_name = XSTRING (FONTSET_NAME (fontset))->data; | |
792 | if (regexpp | |
793 | ? fast_c_string_match_ignore_case (name, this_name) >= 0 | |
794 | : !strcmp (XSTRING (name)->data, this_name)) | |
795 | return i; | |
796 | } | |
797 | return -1; | |
798 | } | |
799 | ||
800 | ||
727fb790 | 801 | DEFUN ("query-fontset", Fquery_fontset, Squery_fontset, 1, 2, 0, |
0d407d77 | 802 | "Return the name of a fontset that matches PATTERN.\n\ |
9af3dc47 RS |
803 | The value is nil if there is no matching fontset.\n\ |
804 | PATTERN can contain `*' or `?' as a wildcard\n\ | |
805 | just as X font name matching algorithm allows.\n\ | |
806 | If REGEXPP is non-nil, PATTERN is a regular expression.") | |
727fb790 KH |
807 | (pattern, regexpp) |
808 | Lisp_Object pattern, regexpp; | |
4ed46869 | 809 | { |
0d407d77 KH |
810 | Lisp_Object fontset; |
811 | int id; | |
4ed46869 KH |
812 | |
813 | (*check_window_system_func) (); | |
814 | ||
815 | CHECK_STRING (pattern, 0); | |
816 | ||
817 | if (XSTRING (pattern)->size == 0) | |
818 | return Qnil; | |
819 | ||
0d407d77 KH |
820 | id = fs_query_fontset (pattern, !NILP (regexpp)); |
821 | if (id < 0) | |
822 | return Qnil; | |
4ed46869 | 823 | |
0d407d77 KH |
824 | fontset = FONTSET_FROM_ID (id); |
825 | return FONTSET_NAME (fontset); | |
4ed46869 KH |
826 | } |
827 | ||
0d407d77 KH |
828 | /* Return a list of base fontset names matching PATTERN on frame F. |
829 | If SIZE is not 0, it is the size (maximum bound width) of fontsets | |
830 | to be listed. */ | |
4ed46869 KH |
831 | |
832 | Lisp_Object | |
833 | list_fontsets (f, pattern, size) | |
834 | FRAME_PTR f; | |
835 | Lisp_Object pattern; | |
836 | int size; | |
837 | { | |
0d407d77 KH |
838 | Lisp_Object frame, regexp, val, tail; |
839 | int id; | |
4ed46869 | 840 | |
0d407d77 | 841 | XSETFRAME (frame, f); |
4ed46869 | 842 | |
0d407d77 | 843 | regexp = fontset_pattern_regexp (pattern); |
4ed46869 | 844 | val = Qnil; |
4ed46869 | 845 | |
0d407d77 KH |
846 | for (id = 0; id < ASIZE (Vfontset_table); id++) |
847 | { | |
848 | Lisp_Object fontset; | |
849 | unsigned char *name; | |
850 | ||
851 | fontset = FONTSET_FROM_ID (id); | |
852 | if (NILP (fontset) | |
853 | || !BASE_FONTSET_P (fontset) | |
854 | || !EQ (frame, FONTSET_FRAME (fontset))) | |
855 | continue; | |
856 | name = XSTRING (FONTSET_NAME (fontset))->data; | |
857 | ||
858 | if (!NILP (regexp) | |
859 | ? (fast_c_string_match_ignore_case (regexp, name) < 0) | |
860 | : strcmp (XSTRING (pattern)->data, name)) | |
861 | continue; | |
862 | ||
863 | if (size) | |
4ed46869 | 864 | { |
0d407d77 KH |
865 | struct font_info *fontp; |
866 | fontp = FS_LOAD_FONT (f, 0, NULL, id); | |
867 | if (!fontp || size != fontp->size) | |
868 | continue; | |
4ed46869 | 869 | } |
0d407d77 | 870 | val = Fcons (Fcopy_sequence (FONTSET_NAME (fontset)), val); |
4ed46869 KH |
871 | } |
872 | ||
873 | return val; | |
874 | } | |
875 | ||
876 | DEFUN ("new-fontset", Fnew_fontset, Snew_fontset, 2, 2, 0, | |
0d407d77 KH |
877 | "Create a new fontset NAME that contains font information in FONTLIST.\n\ |
878 | FONTLIST is an alist of charsets vs corresponding font name patterns.") | |
4ed46869 KH |
879 | (name, fontlist) |
880 | Lisp_Object name, fontlist; | |
881 | { | |
0d407d77 KH |
882 | Lisp_Object fontset, elements, ascii_font; |
883 | Lisp_Object tem, tail, elt; | |
4ed46869 KH |
884 | |
885 | (*check_window_system_func) (); | |
886 | ||
887 | CHECK_STRING (name, 0); | |
888 | CHECK_LIST (fontlist, 1); | |
889 | ||
0d407d77 KH |
890 | name = Fdowncase (name); |
891 | tem = Fquery_fontset (name, Qnil); | |
892 | if (!NILP (tem)) | |
9af3dc47 | 893 | error ("Fontset `%s' matches the existing fontset `%s'", |
0d407d77 | 894 | XSTRING (name)->data, XSTRING (tem)->data); |
4ed46869 | 895 | |
0d407d77 KH |
896 | /* Check the validity of FONTLIST while creating a template for |
897 | fontset elements. */ | |
898 | elements = ascii_font = Qnil; | |
7539e11f | 899 | for (tail = fontlist; CONSP (tail); tail = XCDR (tail)) |
4ed46869 | 900 | { |
0d407d77 KH |
901 | Lisp_Object family, registry; |
902 | int c, charset; | |
4ed46869 | 903 | |
0d407d77 | 904 | tem = XCAR (tail); |
4ed46869 | 905 | if (!CONSP (tem) |
7539e11f KR |
906 | || (charset = get_charset_id (XCAR (tem))) < 0 |
907 | || !STRINGP (XCDR (tem))) | |
4ed46869 | 908 | error ("Elements of fontlist must be a cons of charset and font name"); |
0d407d77 KH |
909 | |
910 | tem = Fdowncase (XCDR (tem)); | |
911 | if (charset == CHARSET_ASCII) | |
912 | ascii_font = tem; | |
913 | else | |
914 | { | |
915 | c = MAKE_CHAR (charset, 0, 0); | |
916 | elements = Fcons (Fcons (make_number (c), tem), elements); | |
917 | } | |
4ed46869 KH |
918 | } |
919 | ||
0d407d77 KH |
920 | if (NILP (ascii_font)) |
921 | error ("No ASCII font in the fontlist"); | |
4ed46869 | 922 | |
0d407d77 KH |
923 | fontset = make_fontset (Qnil, name, Qnil); |
924 | FONTSET_ASCII (fontset) = Fcons (make_number (0), ascii_font); | |
925 | for (; CONSP (elements); elements = XCDR (elements)) | |
926 | { | |
927 | elt = XCAR (elements); | |
928 | tem = Fcons (XCAR (elt), font_family_registry (XCDR (elt))); | |
929 | FONTSET_SET (fontset, XINT (XCAR (elt)), tem); | |
930 | } | |
4ed46869 KH |
931 | |
932 | return Qnil; | |
933 | } | |
934 | ||
4ed46869 | 935 | |
0d407d77 KH |
936 | /* Clear all elements of FONTSET for multibyte characters. */ |
937 | ||
938 | static void | |
939 | clear_fontset_elements (fontset) | |
940 | Lisp_Object fontset; | |
4ed46869 | 941 | { |
0d407d77 | 942 | int i; |
4ed46869 | 943 | |
0d407d77 KH |
944 | for (i = CHAR_TABLE_SINGLE_BYTE_SLOTS; i < CHAR_TABLE_ORDINARY_SLOTS; i++) |
945 | XCHAR_TABLE (fontset)->contents[i] = Qnil; | |
946 | } | |
4ed46869 | 947 | |
4ed46869 | 948 | |
0d407d77 KH |
949 | /* Return 1 iff REGISTRY is a valid string as the font registry and |
950 | encoding. It is valid if it doesn't start with `-' and the number | |
951 | of `-' in the string is at most 1. */ | |
952 | ||
953 | static int | |
954 | check_registry_encoding (registry) | |
955 | Lisp_Object registry; | |
956 | { | |
957 | unsigned char *str = XSTRING (registry)->data; | |
958 | unsigned char *p = str; | |
959 | int i; | |
960 | ||
961 | if (!*p || *p++ == '-') | |
962 | return 0; | |
963 | for (i = 0; *p; p++) | |
964 | if (*p == '-') i++; | |
965 | return (i < 2); | |
966 | } | |
967 | ||
968 | ||
969 | /* Check validity of NAME as a fontset name and return the | |
970 | corresponding fontset. If not valid, signal an error. | |
971 | If NAME is t, return Vdefault_fontset. */ | |
972 | ||
973 | static Lisp_Object | |
974 | check_fontset_name (name) | |
975 | Lisp_Object name; | |
976 | { | |
977 | int id; | |
978 | ||
979 | if (EQ (name, Qt)) | |
980 | return Vdefault_fontset; | |
4ed46869 | 981 | |
0d407d77 KH |
982 | CHECK_STRING (name, 0); |
983 | id = fs_query_fontset (name, 0); | |
984 | if (id < 0) | |
9af3dc47 | 985 | error ("Fontset `%s' does not exist", XSTRING (name)->data); |
0d407d77 KH |
986 | return FONTSET_FROM_ID (id); |
987 | } | |
4ed46869 | 988 | |
0d407d77 | 989 | DEFUN ("set-fontset-font", Fset_fontset_font, Sset_fontset_font, 3, 4, 0, |
4ea5775b | 990 | "Modify fontset NAME to use FONTNAME for CHARACTER.\n\ |
755f47fe | 991 | \n\ |
4ea5775b | 992 | CHARACTER may be a cons; (FROM . TO), where FROM and TO are\n\ |
755f47fe DL |
993 | non-generic characters. In that case, use FONTNAME\n\ |
994 | for all characters in the range FROM and TO (inclusive).\n\ | |
995 | \n\ | |
996 | If NAME is t, an entry in the default fontset is modified.\n\ | |
997 | In that case, FONTNAME should be a registry and encoding name\n\ | |
4ea5775b KH |
998 | of a font for CHARACTER.") |
999 | (name, character, fontname, frame) | |
1000 | Lisp_Object name, character, fontname, frame; | |
0d407d77 KH |
1001 | { |
1002 | Lisp_Object fontset, elt; | |
1003 | Lisp_Object realized; | |
1004 | int from, to; | |
1005 | int id; | |
1006 | ||
1007 | fontset = check_fontset_name (name); | |
1008 | ||
4ea5775b | 1009 | if (CONSP (character)) |
0d407d77 KH |
1010 | { |
1011 | /* CH should be (FROM . TO) where FROM and TO are non-generic | |
1012 | characters. */ | |
4ea5775b KH |
1013 | CHECK_NUMBER (XCAR (character), 1); |
1014 | CHECK_NUMBER (XCDR (character), 1); | |
1015 | from = XINT (XCAR (character)); | |
1016 | to = XINT (XCDR (character)); | |
0d407d77 KH |
1017 | if (!char_valid_p (from, 0) || !char_valid_p (to, 0)) |
1018 | error ("Character range should be by non-generic characters."); | |
1019 | if (!NILP (name) | |
1020 | && (SINGLE_BYTE_CHAR_P (from) || SINGLE_BYTE_CHAR_P (to))) | |
1021 | error ("Can't change font for a single byte character"); | |
1022 | } | |
1023 | else | |
4ed46869 | 1024 | { |
4ea5775b KH |
1025 | CHECK_NUMBER (character, 1); |
1026 | from = XINT (character); | |
0d407d77 KH |
1027 | to = from; |
1028 | } | |
1029 | if (!char_valid_p (from, 1)) | |
1030 | invalid_character (from); | |
1031 | if (SINGLE_BYTE_CHAR_P (from)) | |
1032 | error ("Can't change font for a single byte character"); | |
1033 | if (from < to) | |
1034 | { | |
1035 | if (!char_valid_p (to, 1)) | |
1036 | invalid_character (to); | |
1037 | if (SINGLE_BYTE_CHAR_P (to)) | |
1038 | error ("Can't change font for a single byte character"); | |
1039 | } | |
4ed46869 | 1040 | |
0d407d77 KH |
1041 | CHECK_STRING (fontname, 2); |
1042 | fontname = Fdowncase (fontname); | |
f3231837 | 1043 | if (EQ (fontset, Vdefault_fontset)) |
0d407d77 KH |
1044 | { |
1045 | if (!check_registry_encoding (fontname)) | |
1046 | error ("Invalid registry and encoding name: %s", | |
1047 | XSTRING (fontname)->data); | |
1048 | elt = Fcons (make_number (from), Fcons (Qnil, fontname)); | |
4ed46869 | 1049 | } |
0d407d77 KH |
1050 | else |
1051 | elt = Fcons (make_number (from), font_family_registry (fontname)); | |
1052 | ||
1053 | /* The arg FRAME is kept for backward compatibility. We only check | |
1054 | the validity. */ | |
1055 | if (!NILP (frame)) | |
1056 | CHECK_LIVE_FRAME (frame, 3); | |
4ed46869 | 1057 | |
0d407d77 KH |
1058 | for (; from <= to; from++) |
1059 | FONTSET_SET (fontset, from, elt); | |
1060 | Foptimize_char_table (fontset); | |
4ed46869 | 1061 | |
0d407d77 KH |
1062 | /* If there's a realized fontset REALIZED whose parent is FONTSET, |
1063 | clear all the elements of REALIZED and free all multibyte faces | |
1064 | whose fontset is REALIZED. This way, the specified character(s) | |
1065 | are surely redisplayed by a correct font. */ | |
1066 | for (id = 0; id < ASIZE (Vfontset_table); id++) | |
1067 | { | |
1068 | realized = AREF (Vfontset_table, id); | |
1069 | if (!NILP (realized) | |
1070 | && !BASE_FONTSET_P (realized) | |
1071 | && EQ (FONTSET_BASE (realized), fontset)) | |
4ed46869 | 1072 | { |
0d407d77 KH |
1073 | FRAME_PTR f = XFRAME (FONTSET_FRAME (realized)); |
1074 | clear_fontset_elements (realized); | |
1075 | free_realized_multibyte_face (f, id); | |
4ed46869 | 1076 | } |
0d407d77 | 1077 | } |
4ed46869 KH |
1078 | |
1079 | return Qnil; | |
1080 | } | |
1081 | ||
1082 | DEFUN ("font-info", Ffont_info, Sfont_info, 1, 2, 0, | |
1083 | "Return information about a font named NAME on frame FRAME.\n\ | |
1084 | If FRAME is omitted or nil, use the selected frame.\n\ | |
1085 | The returned value is a vector of OPENED-NAME, FULL-NAME, CHARSET, SIZE,\n\ | |
6a7e6d80 | 1086 | HEIGHT, BASELINE-OFFSET, RELATIVE-COMPOSE, and DEFAULT-ASCENT,\n\ |
4ed46869 KH |
1087 | where\n\ |
1088 | OPENED-NAME is the name used for opening the font,\n\ | |
1089 | FULL-NAME is the full name of the font,\n\ | |
0d407d77 | 1090 | SIZE is the maximum bound width of the font,\n\ |
4ed46869 KH |
1091 | HEIGHT is the height of the font,\n\ |
1092 | BASELINE-OFFSET is the upward offset pixels from ASCII baseline,\n\ | |
6a7e6d80 KH |
1093 | RELATIVE-COMPOSE and DEFAULT-ASCENT are the numbers controlling\n\ |
1094 | how to compose characters.\n\ | |
4ed46869 KH |
1095 | If the named font is not yet loaded, return nil.") |
1096 | (name, frame) | |
1097 | Lisp_Object name, frame; | |
1098 | { | |
1099 | FRAME_PTR f; | |
1100 | struct font_info *fontp; | |
1101 | Lisp_Object info; | |
1102 | ||
1103 | (*check_window_system_func) (); | |
1104 | ||
1105 | CHECK_STRING (name, 0); | |
0d407d77 | 1106 | name = Fdowncase (name); |
4ed46869 | 1107 | if (NILP (frame)) |
18f39d0e GM |
1108 | frame = selected_frame; |
1109 | CHECK_LIVE_FRAME (frame, 1); | |
1110 | f = XFRAME (frame); | |
4ed46869 KH |
1111 | |
1112 | if (!query_font_func) | |
1113 | error ("Font query function is not supported"); | |
1114 | ||
1115 | fontp = (*query_font_func) (f, XSTRING (name)->data); | |
1116 | if (!fontp) | |
1117 | return Qnil; | |
1118 | ||
0d407d77 | 1119 | info = Fmake_vector (make_number (7), Qnil); |
4ed46869 KH |
1120 | |
1121 | XVECTOR (info)->contents[0] = build_string (fontp->name); | |
1122 | XVECTOR (info)->contents[1] = build_string (fontp->full_name); | |
0d407d77 KH |
1123 | XVECTOR (info)->contents[2] = make_number (fontp->size); |
1124 | XVECTOR (info)->contents[3] = make_number (fontp->height); | |
1125 | XVECTOR (info)->contents[4] = make_number (fontp->baseline_offset); | |
1126 | XVECTOR (info)->contents[5] = make_number (fontp->relative_compose); | |
1127 | XVECTOR (info)->contents[6] = make_number (fontp->default_ascent); | |
4ed46869 KH |
1128 | |
1129 | return info; | |
1130 | } | |
1131 | ||
1ff005e1 KH |
1132 | |
1133 | /* Return the font name for the character at POSITION in the current | |
1134 | buffer. This is computed from all the text properties and overlays | |
1135 | that apply to POSITION. It returns nil in the following cases: | |
1136 | ||
1137 | (1) The window system doesn't have a font for the character (thus | |
1138 | it is displayed by an empty box). | |
1139 | ||
1140 | (2) The character code is invalid. | |
1141 | ||
1142 | (3) The current buffer is not displayed in any window. | |
1143 | ||
1144 | In addition, the returned font name may not take into account of | |
1145 | such redisplay engine hooks as what used in jit-lock-mode if | |
1146 | POSITION is currently not visible. */ | |
1147 | ||
1148 | ||
1149 | DEFUN ("internal-char-font", Finternal_char_font, Sinternal_char_font, 1, 1, 0, | |
1150 | "For internal use only.") | |
1151 | (position) | |
1152 | Lisp_Object position; | |
1153 | { | |
1154 | int pos, pos_byte, dummy; | |
1155 | int face_id; | |
1156 | int c; | |
1157 | Lisp_Object window; | |
1158 | struct window *w; | |
1159 | struct frame *f; | |
1160 | struct face *face; | |
1161 | ||
1162 | CHECK_NUMBER_COERCE_MARKER (position, 0); | |
1163 | pos = XINT (position); | |
1164 | if (pos < BEGV || pos >= ZV) | |
1165 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); | |
1166 | pos_byte = CHAR_TO_BYTE (pos); | |
1167 | c = FETCH_CHAR (pos_byte); | |
1168 | if (! CHAR_VALID_P (c, 0)) | |
1169 | return Qnil; | |
1170 | window = Fget_buffer_window (Fcurrent_buffer (), Qt); | |
1171 | if (NILP (window)) | |
1172 | return Qnil; | |
1173 | w = XWINDOW (window); | |
1174 | f = XFRAME (w->frame); | |
1175 | face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0); | |
1176 | face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c); | |
1177 | face = FACE_FROM_ID (f, face_id); | |
1178 | return (face->font && face->font_name | |
1179 | ? build_string (face->font_name) | |
1180 | : Qnil); | |
1181 | } | |
1182 | ||
1183 | ||
1184 | /* Called from Ffontset_info via map_char_table on each leaf of | |
1185 | fontset. ARG is a list (LAST FONT-INFO ...), where LAST is `(last | |
1186 | ARG)' and FONT-INFOs have this form: | |
1187 | (CHAR FONT-SPEC) or ((FROM . TO) FONT-SPEC) | |
1188 | The current leaf is indexed by CHARACTER and has value ELT. This | |
1189 | function add the information of the current leaf to ARG by | |
1190 | appending a new element or modifying the last element.. */ | |
1191 | ||
1192 | static void | |
1193 | accumulate_font_info (arg, character, elt) | |
1194 | Lisp_Object arg, character, elt; | |
1195 | { | |
1196 | Lisp_Object last, last_char, last_elt, tmp; | |
1197 | ||
1198 | if (!CONSP (elt)) | |
1199 | return; | |
1200 | last = XCAR (arg); | |
1201 | last_char = XCAR (XCAR (last)); | |
1202 | last_elt = XCAR (XCDR (XCAR (last))); | |
1203 | elt = XCDR (elt); | |
1204 | if (!NILP (Fequal (elt, last_elt))) | |
1205 | { | |
1206 | int this_charset = CHAR_CHARSET (XINT (character)); | |
1207 | ||
1208 | if (CONSP (last_char)) /* LAST_CHAR == (FROM . TO) */ | |
1209 | { | |
1210 | if (this_charset == CHAR_CHARSET (XINT (XCAR (last_char)))) | |
1211 | { | |
1212 | XCDR (last_char) = character; | |
1213 | return; | |
1214 | } | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | if (this_charset == CHAR_CHARSET (XINT (last_char))) | |
1219 | { | |
1220 | XCAR (XCAR (last)) = Fcons (last_char, character); | |
1221 | return; | |
1222 | } | |
1223 | } | |
1224 | } | |
1225 | XCDR (last) = Fcons (Fcons (character, Fcons (elt, Qnil)), Qnil); | |
1226 | XCAR (arg) = XCDR (last); | |
1227 | } | |
1228 | ||
1229 | ||
4ed46869 KH |
1230 | DEFUN ("fontset-info", Ffontset_info, Sfontset_info, 1, 2, 0, |
1231 | "Return information about a fontset named NAME on frame FRAME.\n\ | |
1ff005e1 KH |
1232 | The value is a list:\n\ |
1233 | \(FONTSET-NAME (CHARSET-OR-RANGE FONT-SPEC OPENED ...) ...),\n\ | |
1234 | where,\n\ | |
1235 | FONTSET-NAME is a full name of the fontset.\n\ | |
63dffd51 | 1236 | CHARSET-OR-RANGE is a charset, a character (may be a generic character)\n\ |
06e6aef0 | 1237 | or a cons of two characters specifying the range of characters.\n\ |
1ff005e1 KH |
1238 | FONT-SPEC is a fontname pattern string or a cons (FAMILY . REGISTRY),\n\ |
1239 | where FAMILY is a `FAMILY' field of a XLFD font name,\n\ | |
1240 | REGISTRY is a `CHARSET_REGISTRY' field of a XLDF font name.\n\ | |
1241 | FAMILY may contain a `FOUNDARY' field at the head.\n\ | |
1242 | REGISTRY may contain a `CHARSET_ENCODING' field at the tail.\n\ | |
1243 | OPENEDs are names of fonts actually opened.\n\ | |
1244 | If FRAME is omitted, it defaults to the currently selected frame.") | |
4ed46869 KH |
1245 | (name, frame) |
1246 | Lisp_Object name, frame; | |
1247 | { | |
1ff005e1 | 1248 | Lisp_Object fontset; |
4ed46869 | 1249 | FRAME_PTR f; |
1ff005e1 KH |
1250 | Lisp_Object indices[3]; |
1251 | Lisp_Object val, tail, elt; | |
1252 | Lisp_Object *realized; | |
1253 | int n_realized = 0; | |
4ed46869 KH |
1254 | int i; |
1255 | ||
1256 | (*check_window_system_func) (); | |
1257 | ||
0d407d77 KH |
1258 | fontset = check_fontset_name (name); |
1259 | ||
4ed46869 | 1260 | if (NILP (frame)) |
18f39d0e GM |
1261 | frame = selected_frame; |
1262 | CHECK_LIVE_FRAME (frame, 1); | |
1263 | f = XFRAME (frame); | |
4ed46869 | 1264 | |
1ff005e1 KH |
1265 | /* Recodeq realized fontsets whose base is FONTSET in the table |
1266 | `realized'. */ | |
1267 | realized = (Lisp_Object *) alloca (sizeof (Lisp_Object) | |
1268 | * ASIZE (Vfontset_table)); | |
0d407d77 KH |
1269 | for (i = 0; i < ASIZE (Vfontset_table); i++) |
1270 | { | |
1ff005e1 KH |
1271 | elt = FONTSET_FROM_ID (i); |
1272 | if (!NILP (elt) | |
1273 | && EQ (FONTSET_BASE (elt), fontset)) | |
1274 | realized[n_realized++] = elt; | |
0d407d77 | 1275 | } |
4ed46869 | 1276 | |
1ff005e1 KH |
1277 | /* Accumulate information of the fontset in VAL. The format is |
1278 | (LAST FONT-INFO FONT-INFO ...), where FONT-INFO is (CHAR-OR-RANGE | |
1279 | FONT-SPEC). See the comment for accumulate_font_info for the | |
1280 | detail. */ | |
1281 | val = Fcons (Fcons (make_number (0), | |
1282 | Fcons (XCDR (FONTSET_ASCII (fontset)), Qnil)), | |
0d407d77 | 1283 | Qnil); |
1ff005e1 KH |
1284 | val = Fcons (val, val); |
1285 | map_char_table (accumulate_font_info, Qnil, fontset, val, 0, indices); | |
1286 | val = XCDR (val); | |
1287 | ||
1288 | /* For each FONT-INFO, if CHAR_OR_RANGE (car part) is a generic | |
1289 | character for a charset, replace it wiht the charset symbol. If | |
1290 | fonts are opened for FONT-SPEC, append the names of the fonts to | |
1291 | FONT-SPEC. */ | |
1292 | for (tail = val; CONSP (tail); tail = XCDR (tail)) | |
0d407d77 | 1293 | { |
1ff005e1 KH |
1294 | int c; |
1295 | elt = XCAR (tail); | |
1296 | if (INTEGERP (XCAR (elt))) | |
0d407d77 | 1297 | { |
1ff005e1 KH |
1298 | int charset, c1, c2; |
1299 | c = XINT (XCAR (elt)); | |
1300 | SPLIT_CHAR (c, charset, c1, c2); | |
1301 | if (c1 == 0) | |
1302 | XCAR (elt) = CHARSET_SYMBOL (charset); | |
1303 | } | |
1304 | else | |
1305 | c = XINT (XCAR (XCAR (elt))); | |
1306 | for (i = 0; i < n_realized; i++) | |
1307 | { | |
1308 | Lisp_Object face_id, font; | |
0d407d77 KH |
1309 | struct face *face; |
1310 | ||
1ff005e1 KH |
1311 | face_id = FONTSET_REF_VIA_BASE (realized[i], c); |
1312 | if (INTEGERP (face_id)) | |
0d407d77 | 1313 | { |
1ff005e1 KH |
1314 | face = FACE_FROM_ID (f, XINT (face_id)); |
1315 | if (face->font && face->font_name) | |
1316 | { | |
1317 | font = build_string (face->font_name); | |
1318 | if (NILP (Fmember (font, XCDR (XCDR (elt))))) | |
1319 | XCDR (XCDR (elt)) = Fcons (font, XCDR (XCDR (elt))); | |
1320 | } | |
0d407d77 | 1321 | } |
0d407d77 KH |
1322 | } |
1323 | } | |
1ff005e1 | 1324 | return Fcons (FONTSET_NAME (fontset), val); |
4ed46869 KH |
1325 | } |
1326 | ||
0d407d77 | 1327 | DEFUN ("fontset-font", Ffontset_font, Sfontset_font, 2, 2, 0, |
755f47fe | 1328 | "Return a font name pattern for character CH in fontset NAME.\n\ |
0d407d77 KH |
1329 | If NAME is t, find a font name pattern in the default fontset.") |
1330 | (name, ch) | |
1331 | Lisp_Object name, ch; | |
1332 | { | |
1333 | int c, id; | |
1334 | Lisp_Object fontset, elt; | |
1335 | ||
1336 | fontset = check_fontset_name (name); | |
1337 | ||
1338 | CHECK_NUMBER (ch, 1); | |
1339 | c = XINT (ch); | |
1340 | if (!char_valid_p (c, 1)) | |
1341 | invalid_character (c); | |
1342 | ||
1343 | elt = FONTSET_REF (fontset, c); | |
1344 | if (CONSP (elt)) | |
1345 | elt = XCDR (elt); | |
1346 | ||
1347 | return elt; | |
1348 | } | |
1349 | ||
1350 | ||
1351 | DEFUN ("fontset-list", Ffontset_list, Sfontset_list, 0, 0, 0, | |
1352 | "Return a list of all defined fontset names.") | |
1353 | () | |
1354 | { | |
1355 | Lisp_Object fontset, list; | |
1356 | int i; | |
1357 | ||
1358 | list = Qnil; | |
1359 | for (i = 0; i < ASIZE (Vfontset_table); i++) | |
1360 | { | |
1361 | fontset = FONTSET_FROM_ID (i); | |
1362 | if (!NILP (fontset) | |
1363 | && BASE_FONTSET_P (fontset)) | |
1364 | list = Fcons (FONTSET_NAME (fontset), list); | |
1365 | } | |
1ff005e1 | 1366 | |
0d407d77 KH |
1367 | return list; |
1368 | } | |
1369 | ||
dfcf069d | 1370 | void |
4ed46869 KH |
1371 | syms_of_fontset () |
1372 | { | |
1373 | int i; | |
1374 | ||
4ed46869 KH |
1375 | if (!load_font_func) |
1376 | /* Window system initializer should have set proper functions. */ | |
1377 | abort (); | |
1378 | ||
6a7e6d80 | 1379 | Qfontset = intern ("fontset"); |
4ed46869 | 1380 | staticpro (&Qfontset); |
0d407d77 | 1381 | Fput (Qfontset, Qchar_table_extra_slots, make_number (3)); |
4ed46869 KH |
1382 | |
1383 | Vcached_fontset_data = Qnil; | |
1384 | staticpro (&Vcached_fontset_data); | |
1385 | ||
0d407d77 KH |
1386 | Vfontset_table = Fmake_vector (make_number (32), Qnil); |
1387 | staticpro (&Vfontset_table); | |
0d407d77 KH |
1388 | |
1389 | Vdefault_fontset = Fmake_char_table (Qfontset, Qnil); | |
1390 | staticpro (&Vdefault_fontset); | |
1ff005e1 KH |
1391 | FONTSET_ID (Vdefault_fontset) = make_number (0); |
1392 | FONTSET_NAME (Vdefault_fontset) | |
1393 | = build_string ("-*-*-*-*-*-*-*-*-*-*-*-*-fontset-default"); | |
0d407d77 | 1394 | FONTSET_ASCII (Vdefault_fontset) |
afc125e1 KH |
1395 | = Fcons (make_number (0), |
1396 | build_string ("-adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1")); | |
1ff005e1 KH |
1397 | AREF (Vfontset_table, 0) = Vdefault_fontset; |
1398 | next_fontset_id = 1; | |
4ed46869 KH |
1399 | |
1400 | DEFVAR_LISP ("font-encoding-alist", &Vfont_encoding_alist, | |
1401 | "Alist of fontname patterns vs corresponding encoding info.\n\ | |
1402 | Each element looks like (REGEXP . ENCODING-INFO),\n\ | |
1403 | where ENCODING-INFO is an alist of CHARSET vs ENCODING.\n\ | |
1404 | ENCODING is one of the following integer values:\n\ | |
1405 | 0: code points 0x20..0x7F or 0x2020..0x7F7F are used,\n\ | |
1406 | 1: code points 0xA0..0xFF or 0xA0A0..0xFFFF are used,\n\ | |
1407 | 2: code points 0x20A0..0x7FFF are used,\n\ | |
1408 | 3: code points 0xA020..0xFF7F are used."); | |
1409 | Vfont_encoding_alist = Qnil; | |
1410 | ||
6a7e6d80 | 1411 | DEFVAR_LISP ("use-default-ascent", &Vuse_default_ascent, |
fc891591 | 1412 | "Char table of characters whose ascent values should be ignored.\n\ |
6a7e6d80 | 1413 | If an entry for a character is non-nil, the ascent value of the glyph\n\ |
2aeafb78 KH |
1414 | is assumed to be what specified by _MULE_DEFAULT_ASCENT property of a font.\n\ |
1415 | \n\ | |
1416 | This affects how a composite character which contains\n\ | |
1417 | such a character is displayed on screen."); | |
1418 | Vuse_default_ascent = Qnil; | |
1419 | ||
1420 | DEFVAR_LISP ("ignore-relative-composition", &Vignore_relative_composition, | |
1421 | "Char table of characters which is not composed relatively.\n\ | |
810abb87 | 1422 | If an entry for a character is non-nil, a composition sequence\n\ |
2aeafb78 KH |
1423 | which contains that character is displayed so that\n\ |
1424 | the glyph of that character is put without considering\n\ | |
1425 | an ascent and descent value of a previous character."); | |
810abb87 | 1426 | Vignore_relative_composition = Qnil; |
6a7e6d80 | 1427 | |
01d4b817 KH |
1428 | DEFVAR_LISP ("alternate-fontname-alist", &Valternate_fontname_alist, |
1429 | "Alist of fontname vs list of the alternate fontnames.\n\ | |
fc891591 | 1430 | When a specified font name is not found, the corresponding\n\ |
01d4b817 KH |
1431 | alternate fontnames (if any) are tried instead."); |
1432 | Valternate_fontname_alist = Qnil; | |
8c83e4f9 | 1433 | |
1c283e35 KH |
1434 | DEFVAR_LISP ("fontset-alias-alist", &Vfontset_alias_alist, |
1435 | "Alist of fontset names vs the aliases."); | |
1ff005e1 KH |
1436 | Vfontset_alias_alist = Fcons (Fcons (FONTSET_NAME (Vdefault_fontset), |
1437 | build_string ("fontset-default")), | |
1438 | Qnil); | |
1c283e35 | 1439 | |
ec3bb068 KH |
1440 | DEFVAR_LISP ("highlight-wrong-size-font", &Vhighlight_wrong_size_font, |
1441 | "*Non-nil means highlight characters shown in wrong size fonts somehow.\n\ | |
1442 | The way to highlight them depends on window system on which Emacs runs.\n\ | |
fc891591 | 1443 | On X11, a rectangle is shown around each such character."); |
e3ee2a8a | 1444 | Vhighlight_wrong_size_font = Qnil; |
ec3bb068 KH |
1445 | |
1446 | DEFVAR_LISP ("clip-large-size-font", &Vclip_large_size_font, | |
fc891591 | 1447 | "*Non-nil means characters shown in overlarge fonts are clipped.\n\ |
1c283e35 | 1448 | The height of clipping area is the same as that of an ASCII character.\n\ |
fc891591 RS |
1449 | The width of the area is the same as that of an ASCII character,\n\ |
1450 | or twice as wide, depending on the character set's column-width.\n\ | |
1c283e35 | 1451 | \n\ |
fc891591 RS |
1452 | If the only font you have for a specific character set is too large,\n\ |
1453 | and clipping these characters makes them hard to read,\n\ | |
1454 | you can set this variable to nil to display the characters without clipping.\n\ | |
1455 | The drawback is that you will get some garbage left on your screen."); | |
ec3bb068 KH |
1456 | Vclip_large_size_font = Qt; |
1457 | ||
810abb87 KH |
1458 | DEFVAR_LISP ("vertical-centering-font-regexp", |
1459 | &Vvertical_centering_font_regexp, | |
1460 | "*Regexp matching font names that require vertical centering on display.\n\ | |
1461 | When a character is displayed with such fonts, the character is displayed\n\ | |
1462 | at the vertival center of lines."); | |
1463 | Vvertical_centering_font_regexp = Qnil; | |
1464 | ||
4ed46869 KH |
1465 | defsubr (&Squery_fontset); |
1466 | defsubr (&Snew_fontset); | |
1467 | defsubr (&Sset_fontset_font); | |
1468 | defsubr (&Sfont_info); | |
1ff005e1 | 1469 | defsubr (&Sinternal_char_font); |
4ed46869 | 1470 | defsubr (&Sfontset_info); |
0d407d77 KH |
1471 | defsubr (&Sfontset_font); |
1472 | defsubr (&Sfontset_list); | |
4ed46869 | 1473 | } |