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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
77ad4cfe GM |
2 | Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008 | |
c2f5bfd6 KH |
4 | National Institute of Advanced Industrial Science and Technology (AIST) |
5 | Registration Number H13PRO009 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
9ec0b715 | 9 | GNU Emacs is free software: you can redistribute it and/or modify |
c2f5bfd6 | 10 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
11 | the Free Software Foundation, either version 3 of the License, or |
12 | (at your option) any later version. | |
c2f5bfd6 KH |
13 | |
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 20 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
c2f5bfd6 KH |
21 | |
22 | #include <config.h> | |
23 | #include <stdio.h> | |
f0c55750 | 24 | #include <stdlib.h> |
c2f5bfd6 KH |
25 | #include <X11/Xlib.h> |
26 | ||
27 | #include "lisp.h" | |
28 | #include "dispextern.h" | |
29 | #include "xterm.h" | |
30 | #include "frame.h" | |
31 | #include "blockinput.h" | |
32 | #include "character.h" | |
33 | #include "charset.h" | |
34 | #include "fontset.h" | |
35 | #include "font.h" | |
f0c55750 | 36 | #include "ccl.h" |
c2f5bfd6 KH |
37 | |
38 | \f | |
39 | /* X core font driver. */ | |
40 | ||
f0c55750 KH |
41 | struct xfont_info |
42 | { | |
43 | struct font font; | |
44 | Display *display; | |
45 | XFontStruct *xfont; | |
46 | }; | |
47 | ||
c2f5bfd6 KH |
48 | /* Prototypes of support functions. */ |
49 | extern void x_clear_errors P_ ((Display *)); | |
50 | ||
c2f5bfd6 | 51 | static XCharStruct *xfont_get_pcm P_ ((XFontStruct *, XChar2b *)); |
f0c55750 | 52 | static void xfont_find_ccl_program P_ ((struct font *)); |
c2f5bfd6 KH |
53 | |
54 | /* Get metrics of character CHAR2B in XFONT. Value is null if CHAR2B | |
55 | is not contained in the font. */ | |
56 | ||
57 | static XCharStruct * | |
58 | xfont_get_pcm (xfont, char2b) | |
59 | XFontStruct *xfont; | |
60 | XChar2b *char2b; | |
61 | { | |
62 | /* The result metric information. */ | |
63 | XCharStruct *pcm = NULL; | |
64 | ||
960d80b9 | 65 | font_assert (xfont && char2b); |
c2f5bfd6 KH |
66 | |
67 | if (xfont->per_char != NULL) | |
68 | { | |
69 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
70 | { | |
71 | /* min_char_or_byte2 specifies the linear character index | |
72 | corresponding to the first element of the per_char array, | |
73 | max_char_or_byte2 is the index of the last character. A | |
74 | character with non-zero CHAR2B->byte1 is not in the font. | |
75 | A character with byte2 less than min_char_or_byte2 or | |
76 | greater max_char_or_byte2 is not in the font. */ | |
77 | if (char2b->byte1 == 0 | |
78 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
79 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
80 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; | |
81 | } | |
82 | else | |
83 | { | |
84 | /* If either min_byte1 or max_byte1 are nonzero, both | |
85 | min_char_or_byte2 and max_char_or_byte2 are less than | |
86 | 256, and the 2-byte character index values corresponding | |
87 | to the per_char array element N (counting from 0) are: | |
88 | ||
89 | byte1 = N/D + min_byte1 | |
90 | byte2 = N\D + min_char_or_byte2 | |
91 | ||
92 | where: | |
93 | ||
94 | D = max_char_or_byte2 - min_char_or_byte2 + 1 | |
95 | / = integer division | |
96 | \ = integer modulus */ | |
97 | if (char2b->byte1 >= xfont->min_byte1 | |
98 | && char2b->byte1 <= xfont->max_byte1 | |
99 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
100 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
101 | pcm = (xfont->per_char | |
102 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) | |
103 | * (char2b->byte1 - xfont->min_byte1)) | |
104 | + (char2b->byte2 - xfont->min_char_or_byte2)); | |
105 | } | |
106 | } | |
107 | else | |
108 | { | |
109 | /* If the per_char pointer is null, all glyphs between the first | |
110 | and last character indexes inclusive have the same | |
111 | information, as given by both min_bounds and max_bounds. */ | |
112 | if (char2b->byte2 >= xfont->min_char_or_byte2 | |
113 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
114 | pcm = &xfont->max_bounds; | |
115 | } | |
116 | ||
117 | return ((pcm == NULL | |
118 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) | |
119 | ? NULL : pcm); | |
120 | } | |
121 | ||
f0c55750 KH |
122 | /* Find a CCL program for a font specified by FONTP, and set the member |
123 | `encoder' of the structure. */ | |
124 | ||
125 | static void | |
126 | xfont_find_ccl_program (font) | |
127 | struct font *font; | |
128 | { | |
129 | Lisp_Object list, elt; | |
130 | ||
131 | elt = Qnil; | |
132 | for (list = Vfont_ccl_encoder_alist; CONSP (list); list = XCDR (list)) | |
133 | { | |
134 | elt = XCAR (list); | |
135 | if (CONSP (elt) | |
136 | && STRINGP (XCAR (elt)) | |
137 | && ((fast_string_match_ignore_case (XCAR (elt), | |
138 | font->props[FONT_NAME_INDEX]) | |
139 | >= 0) | |
140 | || (fast_string_match_ignore_case (XCAR (elt), | |
141 | font->props[FONT_FULLNAME_INDEX]) | |
142 | >= 0))) | |
143 | break; | |
144 | } | |
145 | ||
146 | if (! NILP (list)) | |
147 | { | |
148 | struct ccl_program *ccl | |
149 | = (struct ccl_program *) xmalloc (sizeof (struct ccl_program)); | |
150 | ||
151 | if (setup_ccl_program (ccl, XCDR (elt)) < 0) | |
152 | xfree (ccl); | |
153 | else | |
154 | font->font_encoder = ccl; | |
155 | } | |
156 | } | |
157 | ||
feb2737b | 158 | static Lisp_Object xfont_get_cache P_ ((FRAME_PTR)); |
c2f5bfd6 | 159 | static Lisp_Object xfont_list P_ ((Lisp_Object, Lisp_Object)); |
6e34c9c1 | 160 | static Lisp_Object xfont_match P_ ((Lisp_Object, Lisp_Object)); |
c2f5bfd6 | 161 | static Lisp_Object xfont_list_family P_ ((Lisp_Object)); |
f0c55750 | 162 | static Lisp_Object xfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
163 | static void xfont_close P_ ((FRAME_PTR, struct font *)); |
164 | static int xfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
c2f5bfd6 KH |
165 | static int xfont_has_char P_ ((Lisp_Object, int)); |
166 | static unsigned xfont_encode_char P_ ((struct font *, int)); | |
167 | static int xfont_text_extents P_ ((struct font *, unsigned *, int, | |
168 | struct font_metrics *)); | |
169 | static int xfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
f0c55750 | 170 | static int xfont_check P_ ((FRAME_PTR, struct font *)); |
c2f5bfd6 KH |
171 | |
172 | struct font_driver xfont_driver = | |
173 | { | |
575abfb7 | 174 | 0, /* Qx */ |
f0c55750 | 175 | 0, /* case insensitive */ |
c2f5bfd6 | 176 | xfont_get_cache, |
c2f5bfd6 | 177 | xfont_list, |
6e34c9c1 | 178 | xfont_match, |
c2f5bfd6 KH |
179 | xfont_list_family, |
180 | NULL, | |
181 | xfont_open, | |
182 | xfont_close, | |
183 | xfont_prepare_face, | |
f0c55750 | 184 | NULL, |
c2f5bfd6 KH |
185 | xfont_has_char, |
186 | xfont_encode_char, | |
187 | xfont_text_extents, | |
f0c55750 KH |
188 | xfont_draw, |
189 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
190 | xfont_check | |
c2f5bfd6 KH |
191 | }; |
192 | ||
193 | extern Lisp_Object QCname; | |
194 | ||
195 | static Lisp_Object | |
feb2737b KH |
196 | xfont_get_cache (f) |
197 | FRAME_PTR f; | |
c2f5bfd6 | 198 | { |
feb2737b | 199 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
200 | |
201 | return (dpyinfo->name_list_element); | |
202 | } | |
203 | ||
c2f5bfd6 KH |
204 | extern Lisp_Object Vface_alternative_font_registry_alist; |
205 | ||
f0c55750 KH |
206 | static int |
207 | compare_font_names (const void *name1, const void *name2) | |
208 | { | |
7740d2c7 KH |
209 | return xstrcasecmp (*(const unsigned char **) name1, |
210 | *(const unsigned char **) name2); | |
f0c55750 KH |
211 | } |
212 | ||
213 | static Lisp_Object xfont_list_pattern P_ ((Lisp_Object, Display *, char *)); | |
214 | ||
c2f5bfd6 | 215 | static Lisp_Object |
6c4aeab6 KH |
216 | xfont_list_pattern (frame, display, pattern) |
217 | Lisp_Object frame; | |
218 | Display *display; | |
219 | char *pattern; | |
c2f5bfd6 | 220 | { |
6c4aeab6 KH |
221 | Lisp_Object list = Qnil; |
222 | int i, limit, num_fonts; | |
223 | char **names; | |
c2f5bfd6 KH |
224 | |
225 | BLOCK_INPUT; | |
6c4aeab6 | 226 | x_catch_errors (display); |
c2f5bfd6 | 227 | |
6c4aeab6 | 228 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 229 | { |
6c4aeab6 KH |
230 | names = XListFonts (display, pattern, limit, &num_fonts); |
231 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
232 | { |
233 | /* This error is perhaps due to insufficient memory on X | |
234 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
235 | x_clear_errors (display); |
236 | num_fonts = 0; | |
237 | break; | |
c2f5bfd6 | 238 | } |
6c4aeab6 KH |
239 | if (num_fonts < limit) |
240 | break; | |
241 | XFreeFontNames (names); | |
242 | } | |
243 | ||
f0c55750 | 244 | if (num_fonts > 0) |
6c4aeab6 | 245 | { |
f0c55750 | 246 | char **indices = alloca (sizeof (char *) * num_fonts); |
6c4aeab6 | 247 | |
f0c55750 KH |
248 | for (i = 0; i < num_fonts; i++) |
249 | indices[i] = names[i]; | |
250 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 251 | |
f0c55750 | 252 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 253 | { |
f0c55750 KH |
254 | Lisp_Object entity; |
255 | int result; | |
6c4aeab6 | 256 | |
05131107 | 257 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 258 | continue; |
6c4aeab6 | 259 | |
f0c55750 KH |
260 | entity = font_make_entity (); |
261 | ASET (entity, FONT_TYPE_INDEX, Qx); | |
6c4aeab6 | 262 | |
f0c55750 KH |
263 | result = font_parse_xlfd (indices[i], entity); |
264 | if (result < 0) | |
c2f5bfd6 | 265 | { |
f0c55750 KH |
266 | /* This may be an alias name. Try to get the full XLFD name |
267 | from XA_FONT property of the font. */ | |
268 | XFontStruct *font = XLoadQueryFont (display, indices[i]); | |
269 | unsigned long value; | |
270 | ||
271 | if (! font) | |
6c4aeab6 | 272 | continue; |
f0c55750 KH |
273 | if (XGetFontProperty (font, XA_FONT, &value)) |
274 | { | |
275 | char *name = (char *) XGetAtomName (display, (Atom) value); | |
276 | int len = strlen (name); | |
277 | ||
278 | /* If DXPC (a Differential X Protocol Compressor) | |
279 | Ver.3.7 is running, XGetAtomName will return null | |
280 | string. We must avoid such a name. */ | |
281 | if (len > 0) | |
282 | result = font_parse_xlfd (name, entity); | |
283 | XFree (name); | |
284 | } | |
285 | XFreeFont (display, font); | |
c2f5bfd6 | 286 | } |
f0c55750 KH |
287 | |
288 | if (result == 0 | |
289 | /* Avoid auto-scaled fonts. */ | |
290 | && (XINT (AREF (entity, FONT_DPI_INDEX)) == 0 | |
291 | || XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) > 0)) | |
292 | list = Fcons (entity, list); | |
c2f5bfd6 | 293 | } |
019e13ef | 294 | XFreeFontNames (names); |
c2f5bfd6 KH |
295 | } |
296 | ||
297 | x_uncatch_errors (); | |
298 | UNBLOCK_INPUT; | |
299 | ||
960d80b9 | 300 | font_add_log ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
301 | return list; |
302 | } | |
c2f5bfd6 | 303 | |
6c4aeab6 KH |
304 | static Lisp_Object |
305 | xfont_list (frame, spec) | |
306 | Lisp_Object frame, spec; | |
307 | { | |
308 | FRAME_PTR f = XFRAME (frame); | |
309 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
960d80b9 | 310 | Lisp_Object registry, list, val, extra; |
6c4aeab6 KH |
311 | int len; |
312 | char name[256]; | |
313 | ||
314 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
6c4aeab6 | 315 | if (CONSP (extra)) |
c2f5bfd6 | 316 | { |
6c4aeab6 KH |
317 | val = assq_no_quit (QCotf, extra); |
318 | if (! NILP (val)) | |
f0c55750 | 319 | return Qnil; |
6c4aeab6 KH |
320 | val = assq_no_quit (QCscript, extra); |
321 | if (! NILP (val)) | |
f0c55750 KH |
322 | return Qnil; |
323 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 324 | if (! NILP (val)) |
f0c55750 | 325 | return Qnil; |
c2f5bfd6 | 326 | } |
6c4aeab6 | 327 | |
f0c55750 | 328 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
f0c55750 KH |
329 | len = font_unparse_xlfd (spec, 0, name, 256); |
330 | ASET (spec, FONT_REGISTRY_INDEX, registry); | |
331 | if (len < 0) | |
332 | return Qnil; | |
333 | list = xfont_list_pattern (frame, display, name); | |
334 | if (NILP (list) && NILP (registry)) | |
c2f5bfd6 | 335 | { |
f0c55750 KH |
336 | /* Try iso10646-1 */ |
337 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
338 | ||
339 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 340 | { |
f0c55750 KH |
341 | strcpy (r, "iso10646-1"); |
342 | list = xfont_list_pattern (frame, display, name); | |
343 | } | |
344 | } | |
345 | if (NILP (list) && ! NILP (registry)) | |
346 | { | |
37470f4d | 347 | /* Try alternate registries. */ |
f0c55750 | 348 | Lisp_Object alter; |
6c4aeab6 | 349 | |
f0c55750 KH |
350 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
351 | Vface_alternative_font_registry_alist), | |
352 | CONSP (alter))) | |
353 | { | |
354 | /* Pointer to REGISTRY-ENCODING field. */ | |
355 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
356 | ||
357 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
358 | if (STRINGP (XCAR (alter)) | |
359 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
360 | { | |
361 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
362 | list = xfont_list_pattern (frame, display, name); | |
363 | if (! NILP (list)) | |
364 | break; | |
365 | } | |
6c4aeab6 | 366 | } |
c2f5bfd6 | 367 | } |
37470f4d KH |
368 | if (NILP (list)) |
369 | { | |
370 | /* Try alias. */ | |
371 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
372 | if (CONSP (val) && STRINGP (XCDR (val))) | |
7740d2c7 | 373 | list = xfont_list_pattern (frame, display, (char *) SDATA (XCDR (val))); |
37470f4d | 374 | } |
c2f5bfd6 | 375 | |
f0c55750 | 376 | return list; |
c2f5bfd6 KH |
377 | } |
378 | ||
6e34c9c1 KH |
379 | static Lisp_Object |
380 | xfont_match (frame, spec) | |
381 | Lisp_Object frame, spec; | |
382 | { | |
383 | FRAME_PTR f = XFRAME (frame); | |
384 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
385 | Lisp_Object extra, val, entity; | |
f0c55750 | 386 | char buf[256], *name; |
6e34c9c1 KH |
387 | XFontStruct *xfont; |
388 | unsigned long value; | |
389 | ||
390 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
391 | val = assq_no_quit (QCname, extra); | |
392 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 KH |
393 | { |
394 | if (font_unparse_xlfd (spec, 0, buf, 256) < 0) | |
395 | return Qnil; | |
396 | name = buf; | |
397 | } | |
398 | else | |
399 | name = (char *) SDATA (XCDR (val)); | |
6e34c9c1 | 400 | |
9c6d1df5 | 401 | BLOCK_INPUT; |
6e34c9c1 | 402 | entity = Qnil; |
6e34c9c1 KH |
403 | xfont = XLoadQueryFont (display, name); |
404 | if (xfont) | |
405 | { | |
406 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
407 | { | |
408 | int len; | |
409 | ||
410 | name = (char *) XGetAtomName (display, (Atom) value); | |
411 | len = strlen (name); | |
412 | ||
413 | /* If DXPC (a Differential X Protocol Compressor) | |
414 | Ver.3.7 is running, XGetAtomName will return null | |
415 | string. We must avoid such a name. */ | |
416 | if (len > 0) | |
417 | { | |
f0c55750 | 418 | entity = font_make_entity (); |
6e34c9c1 | 419 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6e34c9c1 KH |
420 | if (font_parse_xlfd (name, entity) < 0) |
421 | entity = Qnil; | |
422 | } | |
423 | XFree (name); | |
424 | } | |
425 | XFreeFont (display, xfont); | |
426 | } | |
9c6d1df5 | 427 | UNBLOCK_INPUT; |
6e34c9c1 | 428 | |
960d80b9 | 429 | font_add_log ("xfont-match", spec, entity); |
6e34c9c1 KH |
430 | return entity; |
431 | } | |
432 | ||
c2f5bfd6 KH |
433 | static Lisp_Object |
434 | xfont_list_family (frame) | |
9df50a31 | 435 | Lisp_Object frame; |
c2f5bfd6 KH |
436 | { |
437 | FRAME_PTR f = XFRAME (frame); | |
438 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
439 | char **names; | |
440 | int num_fonts, i; | |
441 | Lisp_Object list; | |
442 | char *last_family; | |
443 | int last_len; | |
444 | ||
445 | BLOCK_INPUT; | |
446 | x_catch_errors (dpyinfo->display); | |
447 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
448 | 0x8000, &num_fonts); | |
449 | if (x_had_errors_p (dpyinfo->display)) | |
450 | { | |
451 | /* This error is perhaps due to insufficient memory on X server. | |
452 | Let's just ignore it. */ | |
453 | x_clear_errors (dpyinfo->display); | |
454 | num_fonts = 0; | |
455 | } | |
456 | ||
457 | list = Qnil; | |
458 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
459 | { | |
460 | char *p0 = names[i], *p1; | |
461 | Lisp_Object family; | |
462 | ||
463 | p0++; /* skip the leading '-' */ | |
464 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
465 | if (! *p0) | |
466 | continue; | |
467 | p1 = ++p0; | |
468 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
469 | if (! *p1 || p1 == p0) | |
470 | continue; | |
471 | if (last_len == p1 - p0 | |
472 | && bcmp (last_family, p0, last_len) == 0) | |
473 | continue; | |
474 | last_len = p1 - p0; | |
475 | last_family = p0; | |
29428bb8 KH |
476 | family = font_intern_prop (p0, last_len, 1); |
477 | if (NILP (assq_no_quit (family, list))) | |
c2f5bfd6 KH |
478 | list = Fcons (family, list); |
479 | } | |
480 | ||
481 | XFreeFontNames (names); | |
482 | x_uncatch_errors (); | |
483 | UNBLOCK_INPUT; | |
484 | ||
485 | return list; | |
486 | } | |
487 | ||
f0c55750 KH |
488 | extern Lisp_Object QCavgwidth; |
489 | ||
490 | static Lisp_Object | |
c2f5bfd6 KH |
491 | xfont_open (f, entity, pixel_size) |
492 | FRAME_PTR f; | |
493 | Lisp_Object entity; | |
494 | int pixel_size; | |
495 | { | |
496 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
497 | Display *display = dpyinfo->display; | |
498 | char name[256]; | |
499 | int len; | |
500 | unsigned long value; | |
501 | Lisp_Object registry; | |
502 | struct charset *encoding, *repertory; | |
f0c55750 | 503 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
504 | struct font *font; |
505 | XFontStruct *xfont; | |
f0c55750 | 506 | int i; |
c2f5bfd6 KH |
507 | |
508 | /* At first, check if we know how to encode characters for this | |
509 | font. */ | |
510 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 511 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d KH |
512 | { |
513 | font_add_log (" x:unknown registry", registry, Qnil); | |
514 | return Qnil; | |
515 | } | |
c2f5bfd6 KH |
516 | |
517 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
518 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
519 | else if (pixel_size == 0) |
520 | { | |
521 | if (FRAME_FONT (f)) | |
522 | pixel_size = FRAME_FONT (f)->pixel_size; | |
523 | else | |
524 | pixel_size = 14; | |
525 | } | |
c2f5bfd6 KH |
526 | len = font_unparse_xlfd (entity, pixel_size, name, 256); |
527 | if (len <= 0) | |
c8e0e16d KH |
528 | { |
529 | font_add_log (" x:unparse failed", entity, Qnil); | |
530 | return Qnil; | |
531 | } | |
c2f5bfd6 KH |
532 | |
533 | BLOCK_INPUT; | |
534 | x_catch_errors (display); | |
535 | xfont = XLoadQueryFont (display, name); | |
536 | if (x_had_errors_p (display)) | |
537 | { | |
538 | /* This error is perhaps due to insufficient memory on X server. | |
539 | Let's just ignore it. */ | |
540 | x_clear_errors (display); | |
541 | xfont = NULL; | |
542 | } | |
2f73901f KH |
543 | else if (! xfont) |
544 | { | |
545 | /* Some version of X lists: | |
546 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
547 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
548 | but can open only: | |
549 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
550 | and | |
551 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
552 | So, we try again with wildcards in RESX and RESY. */ | |
553 | Lisp_Object temp; | |
554 | ||
555 | temp = Fcopy_font_spec (entity); | |
556 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
557 | len = font_unparse_xlfd (temp, pixel_size, name, 256); | |
558 | if (len <= 0) | |
559 | { | |
560 | font_add_log (" x:unparse failed", temp, Qnil); | |
561 | return Qnil; | |
562 | } | |
563 | xfont = XLoadQueryFont (display, name); | |
564 | if (x_had_errors_p (display)) | |
565 | { | |
566 | /* This error is perhaps due to insufficient memory on X server. | |
567 | Let's just ignore it. */ | |
568 | x_clear_errors (display); | |
569 | xfont = NULL; | |
570 | } | |
571 | } | |
f0c55750 KH |
572 | fullname = Qnil; |
573 | /* Try to get the full name of FONT. */ | |
574 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
575 | { | |
576 | char *p0, *p; | |
577 | int dashes = 0; | |
578 | ||
579 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value);; | |
580 | /* Count the number of dashes in the "full name". | |
581 | If it is too few, this isn't really the font's full name, | |
582 | so don't use it. | |
583 | In X11R4, the fonts did not come with their canonical names | |
584 | stored in them. */ | |
585 | while (*p) | |
586 | { | |
587 | if (*p == '-') | |
588 | dashes++; | |
589 | p++; | |
590 | } | |
591 | ||
592 | if (dashes >= 13) | |
593 | fullname = Fdowncase (make_unibyte_string (p0, p - p0)); | |
594 | XFree (p0); | |
595 | } | |
c2f5bfd6 KH |
596 | x_uncatch_errors (); |
597 | UNBLOCK_INPUT; | |
598 | ||
599 | if (! xfont) | |
c8e0e16d KH |
600 | { |
601 | font_add_log (" x:open failed", build_string (name), Qnil); | |
602 | return Qnil; | |
603 | } | |
f0c55750 | 604 | |
947eecfb KH |
605 | font_object = font_make_object (VECSIZE (struct xfont_info), |
606 | entity, pixel_size); | |
f0c55750 KH |
607 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
608 | if (STRINGP (fullname)) | |
960d80b9 | 609 | font_parse_xlfd ((char *) SDATA (fullname), font_object); |
f0c55750 KH |
610 | if (STRINGP (fullname)) |
611 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
612 | else | |
613 | ASET (font_object, FONT_NAME_INDEX, make_unibyte_string (name, len)); | |
614 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); | |
615 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
616 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
617 | font = XFONT_OBJECT (font_object); | |
618 | ((struct xfont_info *) font)->xfont = xfont; | |
619 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
620 | font->pixel_size = pixel_size; |
621 | font->driver = &xfont_driver; | |
c2f5bfd6 | 622 | font->encoding_charset = encoding->id; |
1886668d | 623 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
624 | font->ascent = xfont->ascent; |
625 | font->descent = xfont->descent; | |
f0c55750 KH |
626 | font->height = font->ascent + font->descent; |
627 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
628 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
629 | { | |
630 | /* Fixed width font. */ | |
f0c55750 | 631 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
632 | } |
633 | else | |
634 | { | |
c2f5bfd6 | 635 | XCharStruct *pcm; |
f0c55750 KH |
636 | XChar2b char2b; |
637 | Lisp_Object val; | |
c2f5bfd6 KH |
638 | |
639 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
640 | pcm = xfont_get_pcm (xfont, &char2b); | |
641 | if (pcm) | |
f0c55750 | 642 | font->space_width = pcm->width; |
c2f5bfd6 | 643 | else |
f0c55750 KH |
644 | font->space_width = 0; |
645 | ||
646 | val = Ffont_get (font_object, QCavgwidth); | |
647 | if (INTEGERP (val)) | |
648 | font->average_width = XINT (val); | |
649 | if (font->average_width < 0) | |
650 | font->average_width = - font->average_width; | |
651 | if (font->average_width == 0 | |
652 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 653 | { |
f0c55750 | 654 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 655 | |
f0c55750 KH |
656 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
657 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
658 | width += pcm->width, n++; | |
4f64a164 KH |
659 | if (n > 0) |
660 | font->average_width = width / n; | |
c2f5bfd6 | 661 | } |
4f64a164 KH |
662 | if (font->average_width == 0) |
663 | /* No easy way other than this to get a reasonable | |
664 | average_width. */ | |
665 | font->average_width | |
666 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 667 | } |
c2f5bfd6 | 668 | |
f0c55750 KH |
669 | BLOCK_INPUT; |
670 | font->underline_thickness | |
671 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
672 | ? (long) value : 0); | |
673 | font->underline_position | |
674 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
675 | ? (long) value : -1); | |
676 | font->baseline_offset | |
c2f5bfd6 KH |
677 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
678 | ? (long) value : 0); | |
f0c55750 | 679 | font->relative_compose |
c2f5bfd6 KH |
680 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
681 | ? (long) value : 0); | |
f0c55750 | 682 | font->default_ascent |
c2f5bfd6 KH |
683 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
684 | ? (long) value : 0); | |
c2f5bfd6 KH |
685 | UNBLOCK_INPUT; |
686 | ||
f0c55750 KH |
687 | if (NILP (fullname)) |
688 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
689 | font->vertical_centering |
690 | = (STRINGP (Vvertical_centering_font_regexp) | |
691 | && (fast_string_match_ignore_case | |
692 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 693 | |
f0c55750 | 694 | return font_object; |
c2f5bfd6 KH |
695 | } |
696 | ||
697 | static void | |
698 | xfont_close (f, font) | |
699 | FRAME_PTR f; | |
700 | struct font *font; | |
701 | { | |
702 | BLOCK_INPUT; | |
f0c55750 | 703 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 704 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
705 | } |
706 | ||
707 | static int | |
708 | xfont_prepare_face (f, face) | |
709 | FRAME_PTR f; | |
710 | struct face *face; | |
711 | { | |
712 | BLOCK_INPUT; | |
f0c55750 KH |
713 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
714 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
715 | UNBLOCK_INPUT; |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
c2f5bfd6 KH |
720 | static int |
721 | xfont_has_char (entity, c) | |
722 | Lisp_Object entity; | |
723 | int c; | |
724 | { | |
725 | Lisp_Object registry = AREF (entity, FONT_REGISTRY_INDEX); | |
726 | struct charset *repertory; | |
727 | ||
a9822ae8 | 728 | if (font_registry_charsets (registry, NULL, &repertory) < 0) |
c2f5bfd6 KH |
729 | return -1; |
730 | if (! repertory) | |
731 | return -1; | |
732 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
733 | } | |
734 | ||
735 | static unsigned | |
736 | xfont_encode_char (font, c) | |
737 | struct font *font; | |
738 | int c; | |
739 | { | |
f0c55750 | 740 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
741 | struct charset *charset; |
742 | unsigned code; | |
743 | XChar2b char2b; | |
744 | ||
745 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
746 | code = ENCODE_CHAR (charset, c); | |
747 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 748 | return FONT_INVALID_CODE; |
1886668d | 749 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 750 | { |
1886668d | 751 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 752 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 753 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 754 | } |
88649c62 KH |
755 | char2b.byte1 = code >> 8; |
756 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 757 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
758 | } |
759 | ||
760 | static int | |
761 | xfont_text_extents (font, code, nglyphs, metrics) | |
762 | struct font *font; | |
763 | unsigned *code; | |
764 | int nglyphs; | |
765 | struct font_metrics *metrics; | |
766 | { | |
f0c55750 | 767 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 768 | int width = 0; |
41fa3e2c | 769 | int i, first, x; |
c2f5bfd6 KH |
770 | |
771 | if (metrics) | |
772 | bzero (metrics, sizeof (struct font_metrics)); | |
41fa3e2c | 773 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
774 | { |
775 | XChar2b char2b; | |
776 | static XCharStruct *pcm; | |
777 | ||
778 | if (code[i] >= 0x10000) | |
779 | continue; | |
780 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 781 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
782 | if (! pcm) |
783 | continue; | |
41fa3e2c KH |
784 | if (first) |
785 | { | |
786 | if (metrics) | |
787 | { | |
788 | metrics->lbearing = pcm->lbearing; | |
789 | metrics->rbearing = pcm->rbearing; | |
790 | metrics->ascent = pcm->ascent; | |
791 | metrics->descent = pcm->descent; | |
792 | } | |
793 | first = 0; | |
794 | } | |
795 | else | |
796 | { | |
797 | if (metrics) | |
798 | { | |
799 | if (metrics->lbearing > width + pcm->lbearing) | |
800 | metrics->lbearing = width + pcm->lbearing; | |
801 | if (metrics->rbearing < width + pcm->rbearing) | |
802 | metrics->rbearing = width + pcm->rbearing; | |
803 | if (metrics->ascent < pcm->ascent) | |
804 | metrics->ascent = pcm->ascent; | |
805 | if (metrics->descent < pcm->descent) | |
806 | metrics->descent = pcm->descent; | |
807 | } | |
808 | } | |
c2f5bfd6 KH |
809 | width += pcm->width; |
810 | } | |
811 | if (metrics) | |
812 | metrics->width = width; | |
813 | return width; | |
814 | } | |
815 | ||
816 | static int | |
817 | xfont_draw (s, from, to, x, y, with_background) | |
818 | struct glyph_string *s; | |
819 | int from, to, x, y, with_background; | |
820 | { | |
f0c55750 | 821 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 822 | int len = to - from; |
6e34c9c1 | 823 | GC gc = s->gc; |
298fd5b1 | 824 | int i; |
6e34c9c1 | 825 | |
f0c55750 | 826 | if (s->gc != s->face->gc) |
6e34c9c1 | 827 | { |
d45fefc7 | 828 | BLOCK_INPUT; |
f0c55750 | 829 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 830 | UNBLOCK_INPUT; |
6e34c9c1 | 831 | } |
c2f5bfd6 KH |
832 | |
833 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
834 | { | |
835 | char *str; | |
c2f5bfd6 KH |
836 | USE_SAFE_ALLOCA; |
837 | ||
838 | SAFE_ALLOCA (str, char *, len); | |
839 | for (i = 0; i < len ; i++) | |
840 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 841 | BLOCK_INPUT; |
c2f5bfd6 | 842 | if (with_background > 0) |
298fd5b1 KH |
843 | { |
844 | if (s->padding_p) | |
845 | for (i = 0; i < len; i++) | |
846 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
847 | gc, x + i, y, str + i, 1); | |
848 | else | |
849 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
850 | gc, x, y, str, len); | |
851 | } | |
c2f5bfd6 | 852 | else |
298fd5b1 KH |
853 | { |
854 | if (s->padding_p) | |
855 | for (i = 0; i < len; i++) | |
856 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
857 | gc, x + i, y, str + i, 1); | |
858 | else | |
859 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
860 | gc, x, y, str, len); | |
861 | } | |
d45fefc7 | 862 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
863 | SAFE_FREE (); |
864 | return s->nchars; | |
865 | } | |
866 | ||
d45fefc7 | 867 | BLOCK_INPUT; |
c2f5bfd6 | 868 | if (with_background > 0) |
298fd5b1 KH |
869 | { |
870 | if (s->padding_p) | |
871 | for (i = 0; i < len; i++) | |
872 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
873 | gc, x + i, y, s->char2b + from + i, 1); | |
874 | else | |
875 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
876 | gc, x, y, s->char2b + from, len); | |
877 | } | |
c2f5bfd6 | 878 | else |
298fd5b1 KH |
879 | { |
880 | if (s->padding_p) | |
881 | for (i = 0; i < len; i++) | |
882 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
883 | gc, x + i, y, s->char2b + from + i, 1); | |
884 | else | |
885 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
886 | gc, x, y, s->char2b + from, len); | |
887 | } | |
d45fefc7 | 888 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
889 | |
890 | return len; | |
891 | } | |
892 | ||
f0c55750 KH |
893 | static int |
894 | xfont_check (f, font) | |
895 | FRAME_PTR f; | |
896 | struct font *font; | |
897 | { | |
898 | struct xfont_info *xfont = (struct xfont_info *) font; | |
899 | ||
900 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
901 | } | |
902 | ||
c2f5bfd6 KH |
903 | \f |
904 | void | |
905 | syms_of_xfont () | |
906 | { | |
c2f5bfd6 KH |
907 | xfont_driver.type = Qx; |
908 | register_font_driver (&xfont_driver, NULL); | |
909 | } | |
885b7d09 MB |
910 | |
911 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
912 | (do not change this comment) */ |