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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
114f9c96 GM |
2 | Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008, 2009, 2010 | |
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> |
d7306fe6 | 25 | #include <setjmp.h> |
c2f5bfd6 KH |
26 | #include <X11/Xlib.h> |
27 | ||
28 | #include "lisp.h" | |
29 | #include "dispextern.h" | |
30 | #include "xterm.h" | |
31 | #include "frame.h" | |
32 | #include "blockinput.h" | |
33 | #include "character.h" | |
34 | #include "charset.h" | |
35 | #include "fontset.h" | |
36 | #include "font.h" | |
f0c55750 | 37 | #include "ccl.h" |
c2f5bfd6 KH |
38 | |
39 | \f | |
40 | /* X core font driver. */ | |
41 | ||
f0c55750 KH |
42 | struct xfont_info |
43 | { | |
44 | struct font font; | |
45 | Display *display; | |
46 | XFontStruct *xfont; | |
47 | }; | |
48 | ||
c2f5bfd6 KH |
49 | /* Prototypes of support functions. */ |
50 | extern void x_clear_errors P_ ((Display *)); | |
51 | ||
c2f5bfd6 | 52 | static XCharStruct *xfont_get_pcm P_ ((XFontStruct *, XChar2b *)); |
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 | ||
feb2737b | 122 | static Lisp_Object xfont_get_cache P_ ((FRAME_PTR)); |
c2f5bfd6 | 123 | static Lisp_Object xfont_list P_ ((Lisp_Object, Lisp_Object)); |
6e34c9c1 | 124 | static Lisp_Object xfont_match P_ ((Lisp_Object, Lisp_Object)); |
c2f5bfd6 | 125 | static Lisp_Object xfont_list_family P_ ((Lisp_Object)); |
f0c55750 | 126 | static Lisp_Object xfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
127 | static void xfont_close P_ ((FRAME_PTR, struct font *)); |
128 | static int xfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
c2f5bfd6 KH |
129 | static int xfont_has_char P_ ((Lisp_Object, int)); |
130 | static unsigned xfont_encode_char P_ ((struct font *, int)); | |
131 | static int xfont_text_extents P_ ((struct font *, unsigned *, int, | |
132 | struct font_metrics *)); | |
133 | static int xfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
f0c55750 | 134 | static int xfont_check P_ ((FRAME_PTR, struct font *)); |
c2f5bfd6 KH |
135 | |
136 | struct font_driver xfont_driver = | |
137 | { | |
575abfb7 | 138 | 0, /* Qx */ |
f0c55750 | 139 | 0, /* case insensitive */ |
c2f5bfd6 | 140 | xfont_get_cache, |
c2f5bfd6 | 141 | xfont_list, |
6e34c9c1 | 142 | xfont_match, |
c2f5bfd6 KH |
143 | xfont_list_family, |
144 | NULL, | |
145 | xfont_open, | |
146 | xfont_close, | |
147 | xfont_prepare_face, | |
f0c55750 | 148 | NULL, |
c2f5bfd6 KH |
149 | xfont_has_char, |
150 | xfont_encode_char, | |
151 | xfont_text_extents, | |
f0c55750 KH |
152 | xfont_draw, |
153 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
637fa988 JD |
154 | xfont_check, |
155 | NULL, /* get_variation_glyphs */ | |
156 | NULL, /* filter_properties */ | |
c2f5bfd6 KH |
157 | }; |
158 | ||
159 | extern Lisp_Object QCname; | |
160 | ||
161 | static Lisp_Object | |
feb2737b KH |
162 | xfont_get_cache (f) |
163 | FRAME_PTR f; | |
c2f5bfd6 | 164 | { |
feb2737b | 165 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
166 | |
167 | return (dpyinfo->name_list_element); | |
168 | } | |
169 | ||
c2f5bfd6 KH |
170 | extern Lisp_Object Vface_alternative_font_registry_alist; |
171 | ||
f0c55750 KH |
172 | static int |
173 | compare_font_names (const void *name1, const void *name2) | |
174 | { | |
7740d2c7 KH |
175 | return xstrcasecmp (*(const unsigned char **) name1, |
176 | *(const unsigned char **) name2); | |
f0c55750 KH |
177 | } |
178 | ||
6a705b23 KH |
179 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
180 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
181 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
182 | least twice (plus 1) as large as XLFD. */ | |
183 | ||
184 | static int | |
185 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
186 | { | |
187 | char *p0 = xlfd, *p1 = output; | |
188 | int c; | |
8510724d | 189 | |
6a705b23 KH |
190 | while (*p0) |
191 | { | |
192 | c = *(unsigned char *) p0++; | |
193 | p1 += CHAR_STRING (c, p1); | |
194 | if (--len == 0) | |
195 | break; | |
196 | } | |
197 | *p1 = 0; | |
198 | return (p1 - output); | |
199 | } | |
200 | ||
201 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
202 | resulting byte length. If XLFD contains unencodable character, | |
203 | return -1. */ | |
204 | ||
205 | static int | |
206 | xfont_encode_coding_xlfd (char *xlfd) | |
207 | { | |
208 | const unsigned char *p0 = (unsigned char *) xlfd; | |
209 | unsigned char *p1 = (unsigned char *) xlfd; | |
210 | int len = 0; | |
8510724d | 211 | |
6a705b23 KH |
212 | while (*p0) |
213 | { | |
214 | int c = STRING_CHAR_ADVANCE (p0); | |
215 | ||
216 | if (c >= 0x100) | |
217 | return -1; | |
218 | *p1++ = c; | |
219 | len++; | |
220 | } | |
221 | *p1 = 0; | |
222 | return len; | |
223 | } | |
224 | ||
5a189ffa KH |
225 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
226 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
227 | registry corresponds to ENCODING and REPERTORY. | |
228 | Return 1 if supported, return 0 otherwise. */ | |
229 | ||
230 | static int | |
231 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
232 | struct charset *encoding, struct charset *repertory) | |
233 | { | |
234 | struct charset *charset = repertory ? repertory : encoding; | |
235 | ||
236 | if (CONSP (chars)) | |
237 | { | |
238 | for (; CONSP (chars); chars = XCDR (chars)) | |
239 | { | |
240 | int c = XINT (XCAR (chars)); | |
241 | unsigned code = ENCODE_CHAR (charset, c); | |
242 | XChar2b char2b; | |
243 | ||
244 | if (code == CHARSET_INVALID_CODE (charset)) | |
245 | break; | |
246 | if (! xfont) | |
247 | continue; | |
248 | if (code >= 0x10000) | |
249 | break; | |
250 | char2b.byte1 = code >> 8; | |
251 | char2b.byte2 = code & 0xFF; | |
252 | if (! xfont_get_pcm (xfont, &char2b)) | |
253 | break; | |
254 | } | |
255 | return (NILP (chars)); | |
256 | } | |
257 | else if (VECTORP (chars)) | |
258 | { | |
259 | int i; | |
260 | ||
261 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
262 | { | |
263 | int c = XINT (AREF (chars, i)); | |
264 | unsigned code = ENCODE_CHAR (charset, c); | |
265 | XChar2b char2b; | |
266 | ||
267 | if (code == CHARSET_INVALID_CODE (charset)) | |
268 | continue; | |
269 | if (! xfont) | |
270 | break; | |
271 | if (code >= 0x10000) | |
272 | continue; | |
273 | char2b.byte1 = code >> 8; | |
274 | char2b.byte2 = code & 0xFF; | |
275 | if (xfont_get_pcm (xfont, &char2b)) | |
276 | break; | |
277 | } | |
278 | return (i >= 0); | |
279 | } | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /* A hash table recoding which font supports which scritps. Each key | |
284 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
285 | ADDSTYLE, and each value is a list of script symbols. | |
286 | ||
287 | We assume that fonts that have the same value in the above | |
288 | properties supports the same set of characters on all displays. */ | |
289 | ||
290 | static Lisp_Object xfont_scripts_cache; | |
291 | ||
292 | /* Re-usable vector to store characteristic font properites. */ | |
293 | static Lisp_Object xfont_scratch_props; | |
294 | ||
295 | extern Lisp_Object Qlatin; | |
296 | ||
297 | /* Return a list of scripts supported by the font of FONTNAME whose | |
298 | characteristic properties are in PROPS and whose encoding charset | |
299 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
300 | |
301 | static Lisp_Object | |
5a189ffa KH |
302 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
303 | struct charset *encoding) | |
304 | { | |
305 | Lisp_Object scripts; | |
306 | ||
307 | /* Two special cases to avoid opening rather big fonts. */ | |
308 | if (EQ (AREF (props, 2), Qja)) | |
309 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
310 | if (EQ (AREF (props, 2), Qko)) | |
311 | return Fcons (intern ("hangul"), Qnil); | |
312 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
313 | if (EQ (scripts, Qt)) | |
314 | { | |
315 | XFontStruct *xfont; | |
316 | Lisp_Object val; | |
317 | ||
318 | scripts = Qnil; | |
319 | xfont = XLoadQueryFont (display, fontname); | |
320 | if (xfont) | |
321 | { | |
322 | if (xfont->per_char) | |
323 | { | |
324 | for (val = Vscript_representative_chars; CONSP (val); | |
325 | val = XCDR (val)) | |
326 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
327 | { | |
328 | Lisp_Object script = XCAR (XCAR (val)); | |
329 | Lisp_Object chars = XCDR (XCAR (val)); | |
330 | ||
331 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
332 | scripts = Fcons (script, scripts); | |
333 | } | |
334 | } | |
335 | XFreeFont (display, xfont); | |
336 | } | |
337 | if (EQ (AREF (props, 3), Qiso10646_1) | |
338 | && NILP (Fmemq (Qlatin, scripts))) | |
339 | scripts = Fcons (Qlatin, scripts); | |
340 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
341 | } | |
342 | return scripts; | |
343 | } | |
344 | ||
345 | extern Lisp_Object Vscalable_fonts_allowed; | |
346 | ||
347 | static Lisp_Object | |
348 | xfont_list_pattern (Display *display, char *pattern, | |
349 | Lisp_Object registry, Lisp_Object script) | |
c2f5bfd6 | 350 | { |
6c4aeab6 | 351 | Lisp_Object list = Qnil; |
5a189ffa KH |
352 | Lisp_Object chars = Qnil; |
353 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
354 | int i, limit, num_fonts; |
355 | char **names; | |
6a705b23 KH |
356 | /* Large enough to decode the longest XLFD (255 bytes). */ |
357 | char buf[512]; | |
c2f5bfd6 | 358 | |
5a189ffa KH |
359 | if (! NILP (registry) |
360 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
361 | /* Unknown REGISTRY, not supported. */ | |
362 | return Qnil; | |
363 | if (! NILP (script)) | |
364 | { | |
365 | chars = assq_no_quit (script, Vscript_representative_chars); | |
366 | if (NILP (chars)) | |
367 | /* We can't tell whether or not a font supports SCRIPT. */ | |
368 | return Qnil; | |
369 | chars = XCDR (chars); | |
370 | if (repertory) | |
371 | { | |
372 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
373 | return Qnil; | |
374 | script = Qnil; | |
375 | } | |
376 | } | |
5a189ffa | 377 | |
c2f5bfd6 | 378 | BLOCK_INPUT; |
6c4aeab6 | 379 | x_catch_errors (display); |
c2f5bfd6 | 380 | |
6c4aeab6 | 381 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 382 | { |
6c4aeab6 KH |
383 | names = XListFonts (display, pattern, limit, &num_fonts); |
384 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
385 | { |
386 | /* This error is perhaps due to insufficient memory on X | |
387 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
388 | x_clear_errors (display); |
389 | num_fonts = 0; | |
390 | break; | |
c2f5bfd6 | 391 | } |
6c4aeab6 KH |
392 | if (num_fonts < limit) |
393 | break; | |
394 | XFreeFontNames (names); | |
395 | } | |
396 | ||
f0c55750 | 397 | if (num_fonts > 0) |
6c4aeab6 | 398 | { |
f0c55750 | 399 | char **indices = alloca (sizeof (char *) * num_fonts); |
46306a17 | 400 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 401 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 402 | |
46306a17 SM |
403 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
404 | props[i] = Qnil; | |
f0c55750 KH |
405 | for (i = 0; i < num_fonts; i++) |
406 | indices[i] = names[i]; | |
407 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 408 | |
f0c55750 | 409 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 410 | { |
f0c55750 | 411 | Lisp_Object entity; |
6c4aeab6 | 412 | |
05131107 | 413 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 414 | continue; |
f0c55750 | 415 | entity = font_make_entity (); |
6a705b23 | 416 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
4fa58085 KH |
417 | if (font_parse_xlfd (buf, entity) < 0) |
418 | continue; | |
5a189ffa KH |
419 | ASET (entity, FONT_TYPE_INDEX, Qx); |
420 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
421 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
422 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
423 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
424 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
425 | continue; | |
426 | /* Avoid not-allowed scalable fonts. */ | |
427 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 428 | { |
4fa58085 KH |
429 | int size = 0; |
430 | ||
431 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
432 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
433 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
434 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
435 | if (size == 0) | |
6c4aeab6 | 436 | continue; |
5a189ffa KH |
437 | } |
438 | else if (CONSP (Vscalable_fonts_allowed)) | |
439 | { | |
440 | Lisp_Object tail, elt; | |
441 | ||
442 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
443 | tail = XCDR (tail)) | |
f0c55750 | 444 | { |
5a189ffa KH |
445 | elt = XCAR (tail); |
446 | if (STRINGP (elt) | |
447 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
448 | break; | |
f0c55750 | 449 | } |
5a189ffa KH |
450 | if (! CONSP (tail)) |
451 | continue; | |
c2f5bfd6 | 452 | } |
f0c55750 | 453 | |
4fa58085 KH |
454 | /* Avoid fonts of invalid registry. */ |
455 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
456 | continue; | |
457 | ||
5a189ffa KH |
458 | /* Update encoding and repertory if necessary. */ |
459 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
460 | { | |
461 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
462 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
463 | encoding = NULL; | |
464 | } | |
465 | if (! encoding) | |
466 | /* Unknown REGISTRY, not supported. */ | |
467 | continue; | |
468 | if (repertory) | |
469 | { | |
470 | if (NILP (script) | |
471 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
472 | list = Fcons (entity, list); | |
473 | continue; | |
474 | } | |
475 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
476 | sizeof (Lisp_Object) * 7) | |
477 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
478 | { | |
479 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
480 | sizeof (Lisp_Object) * 7); | |
481 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
482 | scripts = xfont_supported_scripts (display, indices[i], | |
483 | xfont_scratch_props, encoding); | |
484 | } | |
485 | if (NILP (script) | |
486 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 487 | list = Fcons (entity, list); |
c2f5bfd6 | 488 | } |
019e13ef | 489 | XFreeFontNames (names); |
c2f5bfd6 KH |
490 | } |
491 | ||
492 | x_uncatch_errors (); | |
493 | UNBLOCK_INPUT; | |
494 | ||
678dca3d | 495 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
496 | return list; |
497 | } | |
c2f5bfd6 | 498 | |
6c4aeab6 KH |
499 | static Lisp_Object |
500 | xfont_list (frame, spec) | |
501 | Lisp_Object frame, spec; | |
502 | { | |
503 | FRAME_PTR f = XFRAME (frame); | |
504 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 505 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 506 | int len; |
6a705b23 KH |
507 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
508 | char name[512]; | |
8510724d | 509 | |
6c4aeab6 | 510 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 511 | if (CONSP (extra)) |
c2f5bfd6 | 512 | { |
6c4aeab6 | 513 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 514 | if (! NILP (val)) |
f0c55750 KH |
515 | return Qnil; |
516 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 517 | if (! NILP (val)) |
f0c55750 | 518 | return Qnil; |
c2f5bfd6 | 519 | } |
398dbf26 | 520 | |
f0c55750 | 521 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
522 | len = font_unparse_xlfd (spec, 0, name, 512); |
523 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 524 | return Qnil; |
5a189ffa KH |
525 | |
526 | val = assq_no_quit (QCscript, extra); | |
527 | script = CDR (val); | |
528 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 529 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 530 | { |
f0c55750 KH |
531 | /* Try iso10646-1 */ |
532 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
533 | ||
534 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 535 | { |
f0c55750 | 536 | strcpy (r, "iso10646-1"); |
5a189ffa | 537 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
538 | } |
539 | } | |
540 | if (NILP (list) && ! NILP (registry)) | |
541 | { | |
37470f4d | 542 | /* Try alternate registries. */ |
f0c55750 | 543 | Lisp_Object alter; |
6c4aeab6 | 544 | |
f0c55750 KH |
545 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
546 | Vface_alternative_font_registry_alist), | |
547 | CONSP (alter))) | |
548 | { | |
549 | /* Pointer to REGISTRY-ENCODING field. */ | |
550 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
551 | ||
552 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
553 | if (STRINGP (XCAR (alter)) | |
554 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
555 | { | |
556 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 557 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
558 | if (! NILP (list)) |
559 | break; | |
560 | } | |
6c4aeab6 | 561 | } |
c2f5bfd6 | 562 | } |
37470f4d KH |
563 | if (NILP (list)) |
564 | { | |
565 | /* Try alias. */ | |
566 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
567 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
568 | { | |
569 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
570 | if (xfont_encode_coding_xlfd (name) < 0) | |
571 | return Qnil; | |
5a189ffa | 572 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 573 | } |
37470f4d | 574 | } |
398dbf26 | 575 | |
f0c55750 | 576 | return list; |
c2f5bfd6 KH |
577 | } |
578 | ||
6e34c9c1 KH |
579 | static Lisp_Object |
580 | xfont_match (frame, spec) | |
581 | Lisp_Object frame, spec; | |
582 | { | |
583 | FRAME_PTR f = XFRAME (frame); | |
584 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
585 | Lisp_Object extra, val, entity; | |
6a705b23 | 586 | char name[512]; |
6e34c9c1 KH |
587 | XFontStruct *xfont; |
588 | unsigned long value; | |
589 | ||
590 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
591 | val = assq_no_quit (QCname, extra); | |
592 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 593 | { |
6a705b23 | 594 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 595 | return Qnil; |
f0c55750 | 596 | } |
6a705b23 KH |
597 | else if (SBYTES (XCDR (val)) < 512) |
598 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
f0c55750 | 599 | else |
6a705b23 KH |
600 | return Qnil; |
601 | if (xfont_encode_coding_xlfd (name) < 0) | |
602 | return Qnil; | |
6e34c9c1 | 603 | |
9c6d1df5 | 604 | BLOCK_INPUT; |
6e34c9c1 | 605 | entity = Qnil; |
6e34c9c1 KH |
606 | xfont = XLoadQueryFont (display, name); |
607 | if (xfont) | |
608 | { | |
609 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
610 | { | |
611 | int len; | |
6a705b23 | 612 | char *s; |
6e34c9c1 | 613 | |
6a705b23 KH |
614 | s = (char *) XGetAtomName (display, (Atom) value); |
615 | len = strlen (s); | |
6e34c9c1 KH |
616 | |
617 | /* If DXPC (a Differential X Protocol Compressor) | |
618 | Ver.3.7 is running, XGetAtomName will return null | |
619 | string. We must avoid such a name. */ | |
620 | if (len > 0) | |
621 | { | |
f0c55750 | 622 | entity = font_make_entity (); |
6e34c9c1 | 623 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 624 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
625 | if (font_parse_xlfd (name, entity) < 0) |
626 | entity = Qnil; | |
627 | } | |
6a705b23 | 628 | XFree (s); |
6e34c9c1 KH |
629 | } |
630 | XFreeFont (display, xfont); | |
631 | } | |
9c6d1df5 | 632 | UNBLOCK_INPUT; |
6e34c9c1 | 633 | |
678dca3d | 634 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
635 | return entity; |
636 | } | |
637 | ||
c2f5bfd6 KH |
638 | static Lisp_Object |
639 | xfont_list_family (frame) | |
9df50a31 | 640 | Lisp_Object frame; |
c2f5bfd6 KH |
641 | { |
642 | FRAME_PTR f = XFRAME (frame); | |
643 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
644 | char **names; | |
645 | int num_fonts, i; | |
646 | Lisp_Object list; | |
647 | char *last_family; | |
648 | int last_len; | |
649 | ||
650 | BLOCK_INPUT; | |
651 | x_catch_errors (dpyinfo->display); | |
652 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
653 | 0x8000, &num_fonts); | |
654 | if (x_had_errors_p (dpyinfo->display)) | |
655 | { | |
656 | /* This error is perhaps due to insufficient memory on X server. | |
657 | Let's just ignore it. */ | |
658 | x_clear_errors (dpyinfo->display); | |
659 | num_fonts = 0; | |
660 | } | |
661 | ||
662 | list = Qnil; | |
663 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
664 | { | |
6a705b23 | 665 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 666 | Lisp_Object family; |
6a705b23 | 667 | int decoded_len; |
c2f5bfd6 KH |
668 | |
669 | p0++; /* skip the leading '-' */ | |
670 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
671 | if (! *p0) | |
672 | continue; | |
673 | p1 = ++p0; | |
674 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
675 | if (! *p1 || p1 == p0) | |
676 | continue; | |
677 | if (last_len == p1 - p0 | |
678 | && bcmp (last_family, p0, last_len) == 0) | |
679 | continue; | |
680 | last_len = p1 - p0; | |
681 | last_family = p0; | |
6a705b23 KH |
682 | |
683 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
684 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 685 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
686 | list = Fcons (family, list); |
687 | } | |
688 | ||
689 | XFreeFontNames (names); | |
690 | x_uncatch_errors (); | |
691 | UNBLOCK_INPUT; | |
692 | ||
693 | return list; | |
694 | } | |
695 | ||
f0c55750 KH |
696 | extern Lisp_Object QCavgwidth; |
697 | ||
698 | static Lisp_Object | |
c2f5bfd6 KH |
699 | xfont_open (f, entity, pixel_size) |
700 | FRAME_PTR f; | |
701 | Lisp_Object entity; | |
702 | int pixel_size; | |
703 | { | |
704 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
705 | Display *display = dpyinfo->display; | |
6a705b23 | 706 | char name[512]; |
c2f5bfd6 KH |
707 | int len; |
708 | unsigned long value; | |
709 | Lisp_Object registry; | |
710 | struct charset *encoding, *repertory; | |
f0c55750 | 711 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
712 | struct font *font; |
713 | XFontStruct *xfont; | |
714 | ||
715 | /* At first, check if we know how to encode characters for this | |
716 | font. */ | |
717 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 718 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 719 | { |
678dca3d | 720 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
721 | return Qnil; |
722 | } | |
c2f5bfd6 KH |
723 | |
724 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
725 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
726 | else if (pixel_size == 0) |
727 | { | |
728 | if (FRAME_FONT (f)) | |
729 | pixel_size = FRAME_FONT (f)->pixel_size; | |
730 | else | |
731 | pixel_size = 14; | |
732 | } | |
6a705b23 KH |
733 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
734 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 735 | { |
678dca3d | 736 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
737 | return Qnil; |
738 | } | |
c2f5bfd6 KH |
739 | |
740 | BLOCK_INPUT; | |
741 | x_catch_errors (display); | |
742 | xfont = XLoadQueryFont (display, name); | |
743 | if (x_had_errors_p (display)) | |
744 | { | |
745 | /* This error is perhaps due to insufficient memory on X server. | |
746 | Let's just ignore it. */ | |
747 | x_clear_errors (display); | |
748 | xfont = NULL; | |
749 | } | |
2f73901f KH |
750 | else if (! xfont) |
751 | { | |
752 | /* Some version of X lists: | |
753 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
754 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
755 | but can open only: | |
756 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
757 | and | |
758 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
759 | So, we try again with wildcards in RESX and RESY. */ | |
760 | Lisp_Object temp; | |
761 | ||
762 | temp = Fcopy_font_spec (entity); | |
763 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
764 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
765 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 766 | { |
678dca3d | 767 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
768 | return Qnil; |
769 | } | |
770 | xfont = XLoadQueryFont (display, name); | |
771 | if (x_had_errors_p (display)) | |
772 | { | |
773 | /* This error is perhaps due to insufficient memory on X server. | |
774 | Let's just ignore it. */ | |
775 | x_clear_errors (display); | |
776 | xfont = NULL; | |
777 | } | |
778 | } | |
f0c55750 KH |
779 | fullname = Qnil; |
780 | /* Try to get the full name of FONT. */ | |
781 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
782 | { | |
783 | char *p0, *p; | |
784 | int dashes = 0; | |
785 | ||
8510724d | 786 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
787 | /* Count the number of dashes in the "full name". |
788 | If it is too few, this isn't really the font's full name, | |
789 | so don't use it. | |
790 | In X11R4, the fonts did not come with their canonical names | |
791 | stored in them. */ | |
792 | while (*p) | |
793 | { | |
794 | if (*p == '-') | |
795 | dashes++; | |
796 | p++; | |
797 | } | |
798 | ||
799 | if (dashes >= 13) | |
6a705b23 KH |
800 | { |
801 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
802 | fullname = Fdowncase (make_string (name, len)); | |
803 | } | |
f0c55750 KH |
804 | XFree (p0); |
805 | } | |
c2f5bfd6 KH |
806 | x_uncatch_errors (); |
807 | UNBLOCK_INPUT; | |
808 | ||
809 | if (! xfont) | |
c8e0e16d | 810 | { |
678dca3d | 811 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
812 | return Qnil; |
813 | } | |
f0c55750 | 814 | |
947eecfb KH |
815 | font_object = font_make_object (VECSIZE (struct xfont_info), |
816 | entity, pixel_size); | |
f0c55750 KH |
817 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
818 | if (STRINGP (fullname)) | |
6a705b23 KH |
819 | { |
820 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
821 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
822 | } | |
f0c55750 | 823 | else |
6a705b23 KH |
824 | { |
825 | char buf[512]; | |
826 | ||
827 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
828 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
829 | } | |
f0c55750 KH |
830 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
831 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
832 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
833 | font = XFONT_OBJECT (font_object); | |
834 | ((struct xfont_info *) font)->xfont = xfont; | |
835 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
836 | font->pixel_size = pixel_size; |
837 | font->driver = &xfont_driver; | |
c2f5bfd6 | 838 | font->encoding_charset = encoding->id; |
1886668d | 839 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
840 | font->ascent = xfont->ascent; |
841 | font->descent = xfont->descent; | |
f0c55750 KH |
842 | font->height = font->ascent + font->descent; |
843 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
844 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
845 | { | |
846 | /* Fixed width font. */ | |
f0c55750 | 847 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
848 | } |
849 | else | |
850 | { | |
c2f5bfd6 | 851 | XCharStruct *pcm; |
f0c55750 KH |
852 | XChar2b char2b; |
853 | Lisp_Object val; | |
c2f5bfd6 KH |
854 | |
855 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
856 | pcm = xfont_get_pcm (xfont, &char2b); | |
857 | if (pcm) | |
f0c55750 | 858 | font->space_width = pcm->width; |
c2f5bfd6 | 859 | else |
f0c55750 KH |
860 | font->space_width = 0; |
861 | ||
862 | val = Ffont_get (font_object, QCavgwidth); | |
863 | if (INTEGERP (val)) | |
864 | font->average_width = XINT (val); | |
865 | if (font->average_width < 0) | |
866 | font->average_width = - font->average_width; | |
867 | if (font->average_width == 0 | |
868 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 869 | { |
f0c55750 | 870 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 871 | |
f0c55750 KH |
872 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
873 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
874 | width += pcm->width, n++; | |
4f64a164 KH |
875 | if (n > 0) |
876 | font->average_width = width / n; | |
c2f5bfd6 | 877 | } |
4f64a164 KH |
878 | if (font->average_width == 0) |
879 | /* No easy way other than this to get a reasonable | |
880 | average_width. */ | |
881 | font->average_width | |
882 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 883 | } |
c2f5bfd6 | 884 | |
f0c55750 KH |
885 | BLOCK_INPUT; |
886 | font->underline_thickness | |
887 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
888 | ? (long) value : 0); | |
889 | font->underline_position | |
890 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
891 | ? (long) value : -1); | |
892 | font->baseline_offset | |
c2f5bfd6 KH |
893 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
894 | ? (long) value : 0); | |
f0c55750 | 895 | font->relative_compose |
c2f5bfd6 KH |
896 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
897 | ? (long) value : 0); | |
f0c55750 | 898 | font->default_ascent |
c2f5bfd6 KH |
899 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
900 | ? (long) value : 0); | |
c2f5bfd6 KH |
901 | UNBLOCK_INPUT; |
902 | ||
f0c55750 KH |
903 | if (NILP (fullname)) |
904 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
905 | font->vertical_centering |
906 | = (STRINGP (Vvertical_centering_font_regexp) | |
907 | && (fast_string_match_ignore_case | |
908 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 909 | |
f0c55750 | 910 | return font_object; |
c2f5bfd6 KH |
911 | } |
912 | ||
913 | static void | |
914 | xfont_close (f, font) | |
915 | FRAME_PTR f; | |
916 | struct font *font; | |
917 | { | |
918 | BLOCK_INPUT; | |
f0c55750 | 919 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 920 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
921 | } |
922 | ||
923 | static int | |
924 | xfont_prepare_face (f, face) | |
925 | FRAME_PTR f; | |
926 | struct face *face; | |
927 | { | |
928 | BLOCK_INPUT; | |
f0c55750 KH |
929 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
930 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
931 | UNBLOCK_INPUT; |
932 | ||
933 | return 0; | |
934 | } | |
935 | ||
c2f5bfd6 | 936 | static int |
bd0af90d KH |
937 | xfont_has_char (font, c) |
938 | Lisp_Object font; | |
c2f5bfd6 KH |
939 | int c; |
940 | { | |
bd0af90d | 941 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 942 | struct charset *encoding; |
bd0af90d | 943 | struct charset *repertory = NULL; |
c2f5bfd6 | 944 | |
bd0af90d KH |
945 | if (EQ (registry, Qiso10646_1)) |
946 | { | |
5a189ffa | 947 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
948 | /* We use a font of `ja' and `ko' adstyle only for a character |
949 | in JISX0208 and KSC5601 charsets respectively. */ | |
950 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
951 | && charset_jisx0208 >= 0) | |
5a189ffa | 952 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
953 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
954 | && charset_ksc5601 >= 0) | |
5a189ffa | 955 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
956 | } |
957 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
958 | /* Unknown REGISTRY, not usable. */ | |
959 | return 0; | |
d156542d KH |
960 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
961 | return 1; | |
c2f5bfd6 KH |
962 | if (! repertory) |
963 | return -1; | |
964 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
965 | } | |
966 | ||
967 | static unsigned | |
968 | xfont_encode_char (font, c) | |
969 | struct font *font; | |
970 | int c; | |
971 | { | |
f0c55750 | 972 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
973 | struct charset *charset; |
974 | unsigned code; | |
975 | XChar2b char2b; | |
976 | ||
977 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
978 | code = ENCODE_CHAR (charset, c); | |
979 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 980 | return FONT_INVALID_CODE; |
1886668d | 981 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 982 | { |
1886668d | 983 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 984 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 985 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 986 | } |
88649c62 KH |
987 | char2b.byte1 = code >> 8; |
988 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 989 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
990 | } |
991 | ||
992 | static int | |
993 | xfont_text_extents (font, code, nglyphs, metrics) | |
994 | struct font *font; | |
995 | unsigned *code; | |
996 | int nglyphs; | |
997 | struct font_metrics *metrics; | |
998 | { | |
f0c55750 | 999 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 1000 | int width = 0; |
41fa3e2c | 1001 | int i, first, x; |
c2f5bfd6 KH |
1002 | |
1003 | if (metrics) | |
1004 | bzero (metrics, sizeof (struct font_metrics)); | |
41fa3e2c | 1005 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
1006 | { |
1007 | XChar2b char2b; | |
1008 | static XCharStruct *pcm; | |
1009 | ||
1010 | if (code[i] >= 0x10000) | |
1011 | continue; | |
1012 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 1013 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
1014 | if (! pcm) |
1015 | continue; | |
41fa3e2c KH |
1016 | if (first) |
1017 | { | |
1018 | if (metrics) | |
1019 | { | |
1020 | metrics->lbearing = pcm->lbearing; | |
1021 | metrics->rbearing = pcm->rbearing; | |
1022 | metrics->ascent = pcm->ascent; | |
1023 | metrics->descent = pcm->descent; | |
1024 | } | |
1025 | first = 0; | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | if (metrics) | |
1030 | { | |
1031 | if (metrics->lbearing > width + pcm->lbearing) | |
1032 | metrics->lbearing = width + pcm->lbearing; | |
1033 | if (metrics->rbearing < width + pcm->rbearing) | |
1034 | metrics->rbearing = width + pcm->rbearing; | |
1035 | if (metrics->ascent < pcm->ascent) | |
1036 | metrics->ascent = pcm->ascent; | |
1037 | if (metrics->descent < pcm->descent) | |
1038 | metrics->descent = pcm->descent; | |
1039 | } | |
1040 | } | |
c2f5bfd6 KH |
1041 | width += pcm->width; |
1042 | } | |
1043 | if (metrics) | |
1044 | metrics->width = width; | |
1045 | return width; | |
1046 | } | |
1047 | ||
1048 | static int | |
1049 | xfont_draw (s, from, to, x, y, with_background) | |
1050 | struct glyph_string *s; | |
1051 | int from, to, x, y, with_background; | |
1052 | { | |
f0c55750 | 1053 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1054 | int len = to - from; |
6e34c9c1 | 1055 | GC gc = s->gc; |
298fd5b1 | 1056 | int i; |
6e34c9c1 | 1057 | |
f0c55750 | 1058 | if (s->gc != s->face->gc) |
6e34c9c1 | 1059 | { |
d45fefc7 | 1060 | BLOCK_INPUT; |
f0c55750 | 1061 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1062 | UNBLOCK_INPUT; |
6e34c9c1 | 1063 | } |
c2f5bfd6 KH |
1064 | |
1065 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1066 | { | |
1067 | char *str; | |
c2f5bfd6 KH |
1068 | USE_SAFE_ALLOCA; |
1069 | ||
1070 | SAFE_ALLOCA (str, char *, len); | |
1071 | for (i = 0; i < len ; i++) | |
1072 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1073 | BLOCK_INPUT; |
c2f5bfd6 | 1074 | if (with_background > 0) |
298fd5b1 KH |
1075 | { |
1076 | if (s->padding_p) | |
1077 | for (i = 0; i < len; i++) | |
1078 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1079 | gc, x + i, y, str + i, 1); | |
1080 | else | |
1081 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1082 | gc, x, y, str, len); | |
1083 | } | |
c2f5bfd6 | 1084 | else |
298fd5b1 KH |
1085 | { |
1086 | if (s->padding_p) | |
1087 | for (i = 0; i < len; i++) | |
1088 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1089 | gc, x + i, y, str + i, 1); | |
1090 | else | |
1091 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1092 | gc, x, y, str, len); | |
1093 | } | |
d45fefc7 | 1094 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1095 | SAFE_FREE (); |
1096 | return s->nchars; | |
1097 | } | |
1098 | ||
d45fefc7 | 1099 | BLOCK_INPUT; |
c2f5bfd6 | 1100 | if (with_background > 0) |
298fd5b1 KH |
1101 | { |
1102 | if (s->padding_p) | |
1103 | for (i = 0; i < len; i++) | |
1104 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1105 | gc, x + i, y, s->char2b + from + i, 1); | |
1106 | else | |
1107 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1108 | gc, x, y, s->char2b + from, len); | |
1109 | } | |
c2f5bfd6 | 1110 | else |
298fd5b1 KH |
1111 | { |
1112 | if (s->padding_p) | |
1113 | for (i = 0; i < len; i++) | |
1114 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1115 | gc, x + i, y, s->char2b + from + i, 1); | |
1116 | else | |
1117 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1118 | gc, x, y, s->char2b + from, len); | |
1119 | } | |
d45fefc7 | 1120 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1121 | |
1122 | return len; | |
1123 | } | |
1124 | ||
f0c55750 KH |
1125 | static int |
1126 | xfont_check (f, font) | |
1127 | FRAME_PTR f; | |
1128 | struct font *font; | |
1129 | { | |
1130 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1131 | ||
1132 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1133 | } | |
1134 | ||
c2f5bfd6 KH |
1135 | \f |
1136 | void | |
1137 | syms_of_xfont () | |
1138 | { | |
5a189ffa | 1139 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1140 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1141 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1142 | Lisp_Object args[2]; | |
1143 | args[0] = QCtest; | |
1144 | args[1] = Qequal; | |
1145 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1146 | } | |
5a189ffa | 1147 | staticpro (&xfont_scratch_props); |
46306a17 | 1148 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1149 | xfont_driver.type = Qx; |
1150 | register_font_driver (&xfont_driver, NULL); | |
1151 | } | |
885b7d09 MB |
1152 | |
1153 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
1154 | (do not change this comment) */ |