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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 | 49 | /* Prototypes of support functions. */ |
f57e2426 | 50 | extern void x_clear_errors (Display *); |
c2f5bfd6 | 51 | |
f57e2426 | 52 | static XCharStruct *xfont_get_pcm (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 * | |
971de7fb | 58 | xfont_get_pcm (XFontStruct *xfont, XChar2b *char2b) |
c2f5bfd6 KH |
59 | { |
60 | /* The result metric information. */ | |
61 | XCharStruct *pcm = NULL; | |
62 | ||
960d80b9 | 63 | font_assert (xfont && char2b); |
c2f5bfd6 KH |
64 | |
65 | if (xfont->per_char != NULL) | |
66 | { | |
67 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
68 | { | |
69 | /* min_char_or_byte2 specifies the linear character index | |
70 | corresponding to the first element of the per_char array, | |
71 | max_char_or_byte2 is the index of the last character. A | |
72 | character with non-zero CHAR2B->byte1 is not in the font. | |
73 | A character with byte2 less than min_char_or_byte2 or | |
74 | greater max_char_or_byte2 is not in the font. */ | |
75 | if (char2b->byte1 == 0 | |
76 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
77 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
78 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; | |
79 | } | |
80 | else | |
81 | { | |
82 | /* If either min_byte1 or max_byte1 are nonzero, both | |
83 | min_char_or_byte2 and max_char_or_byte2 are less than | |
84 | 256, and the 2-byte character index values corresponding | |
85 | to the per_char array element N (counting from 0) are: | |
86 | ||
87 | byte1 = N/D + min_byte1 | |
88 | byte2 = N\D + min_char_or_byte2 | |
89 | ||
90 | where: | |
91 | ||
92 | D = max_char_or_byte2 - min_char_or_byte2 + 1 | |
93 | / = integer division | |
94 | \ = integer modulus */ | |
95 | if (char2b->byte1 >= xfont->min_byte1 | |
96 | && char2b->byte1 <= xfont->max_byte1 | |
97 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
98 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
99 | pcm = (xfont->per_char | |
100 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) | |
101 | * (char2b->byte1 - xfont->min_byte1)) | |
102 | + (char2b->byte2 - xfont->min_char_or_byte2)); | |
103 | } | |
104 | } | |
105 | else | |
106 | { | |
107 | /* If the per_char pointer is null, all glyphs between the first | |
108 | and last character indexes inclusive have the same | |
109 | information, as given by both min_bounds and max_bounds. */ | |
110 | if (char2b->byte2 >= xfont->min_char_or_byte2 | |
111 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
112 | pcm = &xfont->max_bounds; | |
113 | } | |
114 | ||
115 | return ((pcm == NULL | |
116 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) | |
117 | ? NULL : pcm); | |
118 | } | |
119 | ||
f57e2426 J |
120 | static Lisp_Object xfont_get_cache (FRAME_PTR); |
121 | static Lisp_Object xfont_list (Lisp_Object, Lisp_Object); | |
122 | static Lisp_Object xfont_match (Lisp_Object, Lisp_Object); | |
123 | static Lisp_Object xfont_list_family (Lisp_Object); | |
124 | static Lisp_Object xfont_open (FRAME_PTR, Lisp_Object, int); | |
125 | static void xfont_close (FRAME_PTR, struct font *); | |
126 | static int xfont_prepare_face (FRAME_PTR, struct face *); | |
127 | static int xfont_has_char (Lisp_Object, int); | |
128 | static unsigned xfont_encode_char (struct font *, int); | |
129 | static int xfont_text_extents (struct font *, unsigned *, int, | |
130 | struct font_metrics *); | |
131 | static int xfont_draw (struct glyph_string *, int, int, int, int, int); | |
132 | static int xfont_check (FRAME_PTR, struct font *); | |
c2f5bfd6 KH |
133 | |
134 | struct font_driver xfont_driver = | |
135 | { | |
575abfb7 | 136 | 0, /* Qx */ |
f0c55750 | 137 | 0, /* case insensitive */ |
c2f5bfd6 | 138 | xfont_get_cache, |
c2f5bfd6 | 139 | xfont_list, |
6e34c9c1 | 140 | xfont_match, |
c2f5bfd6 KH |
141 | xfont_list_family, |
142 | NULL, | |
143 | xfont_open, | |
144 | xfont_close, | |
145 | xfont_prepare_face, | |
f0c55750 | 146 | NULL, |
c2f5bfd6 KH |
147 | xfont_has_char, |
148 | xfont_encode_char, | |
149 | xfont_text_extents, | |
f0c55750 KH |
150 | xfont_draw, |
151 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
637fa988 JD |
152 | xfont_check, |
153 | NULL, /* get_variation_glyphs */ | |
154 | NULL, /* filter_properties */ | |
c2f5bfd6 KH |
155 | }; |
156 | ||
157 | extern Lisp_Object QCname; | |
158 | ||
159 | static Lisp_Object | |
971de7fb | 160 | xfont_get_cache (FRAME_PTR f) |
c2f5bfd6 | 161 | { |
feb2737b | 162 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
163 | |
164 | return (dpyinfo->name_list_element); | |
165 | } | |
166 | ||
c2f5bfd6 KH |
167 | extern Lisp_Object Vface_alternative_font_registry_alist; |
168 | ||
f0c55750 KH |
169 | static int |
170 | compare_font_names (const void *name1, const void *name2) | |
171 | { | |
7740d2c7 KH |
172 | return xstrcasecmp (*(const unsigned char **) name1, |
173 | *(const unsigned char **) name2); | |
f0c55750 KH |
174 | } |
175 | ||
6a705b23 KH |
176 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
177 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
178 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
179 | least twice (plus 1) as large as XLFD. */ | |
180 | ||
181 | static int | |
182 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
183 | { | |
184 | char *p0 = xlfd, *p1 = output; | |
185 | int c; | |
8510724d | 186 | |
6a705b23 KH |
187 | while (*p0) |
188 | { | |
189 | c = *(unsigned char *) p0++; | |
190 | p1 += CHAR_STRING (c, p1); | |
191 | if (--len == 0) | |
192 | break; | |
193 | } | |
194 | *p1 = 0; | |
195 | return (p1 - output); | |
196 | } | |
197 | ||
198 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
199 | resulting byte length. If XLFD contains unencodable character, | |
200 | return -1. */ | |
201 | ||
202 | static int | |
203 | xfont_encode_coding_xlfd (char *xlfd) | |
204 | { | |
205 | const unsigned char *p0 = (unsigned char *) xlfd; | |
206 | unsigned char *p1 = (unsigned char *) xlfd; | |
207 | int len = 0; | |
8510724d | 208 | |
6a705b23 KH |
209 | while (*p0) |
210 | { | |
211 | int c = STRING_CHAR_ADVANCE (p0); | |
212 | ||
213 | if (c >= 0x100) | |
214 | return -1; | |
215 | *p1++ = c; | |
216 | len++; | |
217 | } | |
218 | *p1 = 0; | |
219 | return len; | |
220 | } | |
221 | ||
5a189ffa KH |
222 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
223 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
224 | registry corresponds to ENCODING and REPERTORY. | |
225 | Return 1 if supported, return 0 otherwise. */ | |
226 | ||
227 | static int | |
228 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
229 | struct charset *encoding, struct charset *repertory) | |
230 | { | |
231 | struct charset *charset = repertory ? repertory : encoding; | |
232 | ||
233 | if (CONSP (chars)) | |
234 | { | |
235 | for (; CONSP (chars); chars = XCDR (chars)) | |
236 | { | |
237 | int c = XINT (XCAR (chars)); | |
238 | unsigned code = ENCODE_CHAR (charset, c); | |
239 | XChar2b char2b; | |
240 | ||
241 | if (code == CHARSET_INVALID_CODE (charset)) | |
242 | break; | |
243 | if (! xfont) | |
244 | continue; | |
245 | if (code >= 0x10000) | |
246 | break; | |
247 | char2b.byte1 = code >> 8; | |
248 | char2b.byte2 = code & 0xFF; | |
249 | if (! xfont_get_pcm (xfont, &char2b)) | |
250 | break; | |
251 | } | |
252 | return (NILP (chars)); | |
253 | } | |
254 | else if (VECTORP (chars)) | |
255 | { | |
256 | int i; | |
257 | ||
258 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
259 | { | |
260 | int c = XINT (AREF (chars, i)); | |
261 | unsigned code = ENCODE_CHAR (charset, c); | |
262 | XChar2b char2b; | |
263 | ||
264 | if (code == CHARSET_INVALID_CODE (charset)) | |
265 | continue; | |
266 | if (! xfont) | |
267 | break; | |
268 | if (code >= 0x10000) | |
269 | continue; | |
270 | char2b.byte1 = code >> 8; | |
271 | char2b.byte2 = code & 0xFF; | |
272 | if (xfont_get_pcm (xfont, &char2b)) | |
273 | break; | |
274 | } | |
275 | return (i >= 0); | |
276 | } | |
277 | return 0; | |
278 | } | |
279 | ||
280 | /* A hash table recoding which font supports which scritps. Each key | |
281 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
282 | ADDSTYLE, and each value is a list of script symbols. | |
283 | ||
284 | We assume that fonts that have the same value in the above | |
285 | properties supports the same set of characters on all displays. */ | |
286 | ||
287 | static Lisp_Object xfont_scripts_cache; | |
288 | ||
289 | /* Re-usable vector to store characteristic font properites. */ | |
290 | static Lisp_Object xfont_scratch_props; | |
291 | ||
292 | extern Lisp_Object Qlatin; | |
293 | ||
294 | /* Return a list of scripts supported by the font of FONTNAME whose | |
295 | characteristic properties are in PROPS and whose encoding charset | |
296 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
297 | |
298 | static Lisp_Object | |
5a189ffa KH |
299 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
300 | struct charset *encoding) | |
301 | { | |
302 | Lisp_Object scripts; | |
303 | ||
304 | /* Two special cases to avoid opening rather big fonts. */ | |
305 | if (EQ (AREF (props, 2), Qja)) | |
306 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
307 | if (EQ (AREF (props, 2), Qko)) | |
308 | return Fcons (intern ("hangul"), Qnil); | |
309 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
310 | if (EQ (scripts, Qt)) | |
311 | { | |
312 | XFontStruct *xfont; | |
313 | Lisp_Object val; | |
314 | ||
315 | scripts = Qnil; | |
316 | xfont = XLoadQueryFont (display, fontname); | |
317 | if (xfont) | |
318 | { | |
319 | if (xfont->per_char) | |
320 | { | |
321 | for (val = Vscript_representative_chars; CONSP (val); | |
322 | val = XCDR (val)) | |
323 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
324 | { | |
325 | Lisp_Object script = XCAR (XCAR (val)); | |
326 | Lisp_Object chars = XCDR (XCAR (val)); | |
327 | ||
328 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
329 | scripts = Fcons (script, scripts); | |
330 | } | |
331 | } | |
332 | XFreeFont (display, xfont); | |
333 | } | |
334 | if (EQ (AREF (props, 3), Qiso10646_1) | |
335 | && NILP (Fmemq (Qlatin, scripts))) | |
336 | scripts = Fcons (Qlatin, scripts); | |
337 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
338 | } | |
339 | return scripts; | |
340 | } | |
341 | ||
342 | extern Lisp_Object Vscalable_fonts_allowed; | |
343 | ||
344 | static Lisp_Object | |
345 | xfont_list_pattern (Display *display, char *pattern, | |
346 | Lisp_Object registry, Lisp_Object script) | |
c2f5bfd6 | 347 | { |
6c4aeab6 | 348 | Lisp_Object list = Qnil; |
5a189ffa KH |
349 | Lisp_Object chars = Qnil; |
350 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
351 | int i, limit, num_fonts; |
352 | char **names; | |
6a705b23 KH |
353 | /* Large enough to decode the longest XLFD (255 bytes). */ |
354 | char buf[512]; | |
c2f5bfd6 | 355 | |
5a189ffa KH |
356 | if (! NILP (registry) |
357 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
358 | /* Unknown REGISTRY, not supported. */ | |
359 | return Qnil; | |
360 | if (! NILP (script)) | |
361 | { | |
362 | chars = assq_no_quit (script, Vscript_representative_chars); | |
363 | if (NILP (chars)) | |
364 | /* We can't tell whether or not a font supports SCRIPT. */ | |
365 | return Qnil; | |
366 | chars = XCDR (chars); | |
367 | if (repertory) | |
368 | { | |
369 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
370 | return Qnil; | |
371 | script = Qnil; | |
372 | } | |
373 | } | |
5a189ffa | 374 | |
c2f5bfd6 | 375 | BLOCK_INPUT; |
6c4aeab6 | 376 | x_catch_errors (display); |
c2f5bfd6 | 377 | |
6c4aeab6 | 378 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 379 | { |
6c4aeab6 KH |
380 | names = XListFonts (display, pattern, limit, &num_fonts); |
381 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
382 | { |
383 | /* This error is perhaps due to insufficient memory on X | |
384 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
385 | x_clear_errors (display); |
386 | num_fonts = 0; | |
387 | break; | |
c2f5bfd6 | 388 | } |
6c4aeab6 KH |
389 | if (num_fonts < limit) |
390 | break; | |
391 | XFreeFontNames (names); | |
392 | } | |
393 | ||
f0c55750 | 394 | if (num_fonts > 0) |
6c4aeab6 | 395 | { |
f0c55750 | 396 | char **indices = alloca (sizeof (char *) * num_fonts); |
46306a17 | 397 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 398 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 399 | |
46306a17 SM |
400 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
401 | props[i] = Qnil; | |
f0c55750 KH |
402 | for (i = 0; i < num_fonts; i++) |
403 | indices[i] = names[i]; | |
404 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 405 | |
f0c55750 | 406 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 407 | { |
f0c55750 | 408 | Lisp_Object entity; |
6c4aeab6 | 409 | |
05131107 | 410 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 411 | continue; |
f0c55750 | 412 | entity = font_make_entity (); |
6a705b23 | 413 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
4fa58085 KH |
414 | if (font_parse_xlfd (buf, entity) < 0) |
415 | continue; | |
5a189ffa KH |
416 | ASET (entity, FONT_TYPE_INDEX, Qx); |
417 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
418 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
419 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
420 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
421 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
422 | continue; | |
423 | /* Avoid not-allowed scalable fonts. */ | |
424 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 425 | { |
4fa58085 KH |
426 | int size = 0; |
427 | ||
428 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
429 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
430 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
431 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
432 | if (size == 0) | |
6c4aeab6 | 433 | continue; |
5a189ffa KH |
434 | } |
435 | else if (CONSP (Vscalable_fonts_allowed)) | |
436 | { | |
437 | Lisp_Object tail, elt; | |
438 | ||
439 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
440 | tail = XCDR (tail)) | |
f0c55750 | 441 | { |
5a189ffa KH |
442 | elt = XCAR (tail); |
443 | if (STRINGP (elt) | |
444 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
445 | break; | |
f0c55750 | 446 | } |
5a189ffa KH |
447 | if (! CONSP (tail)) |
448 | continue; | |
c2f5bfd6 | 449 | } |
f0c55750 | 450 | |
4fa58085 KH |
451 | /* Avoid fonts of invalid registry. */ |
452 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
453 | continue; | |
454 | ||
5a189ffa KH |
455 | /* Update encoding and repertory if necessary. */ |
456 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
457 | { | |
458 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
459 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
460 | encoding = NULL; | |
461 | } | |
462 | if (! encoding) | |
463 | /* Unknown REGISTRY, not supported. */ | |
464 | continue; | |
465 | if (repertory) | |
466 | { | |
467 | if (NILP (script) | |
468 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
469 | list = Fcons (entity, list); | |
470 | continue; | |
471 | } | |
472 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
473 | sizeof (Lisp_Object) * 7) | |
474 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
475 | { | |
476 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
477 | sizeof (Lisp_Object) * 7); | |
478 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
479 | scripts = xfont_supported_scripts (display, indices[i], | |
480 | xfont_scratch_props, encoding); | |
481 | } | |
482 | if (NILP (script) | |
483 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 484 | list = Fcons (entity, list); |
c2f5bfd6 | 485 | } |
019e13ef | 486 | XFreeFontNames (names); |
c2f5bfd6 KH |
487 | } |
488 | ||
489 | x_uncatch_errors (); | |
490 | UNBLOCK_INPUT; | |
491 | ||
678dca3d | 492 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
493 | return list; |
494 | } | |
c2f5bfd6 | 495 | |
6c4aeab6 | 496 | static Lisp_Object |
971de7fb | 497 | xfont_list (Lisp_Object frame, Lisp_Object spec) |
6c4aeab6 KH |
498 | { |
499 | FRAME_PTR f = XFRAME (frame); | |
500 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 501 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 502 | int len; |
6a705b23 KH |
503 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
504 | char name[512]; | |
8510724d | 505 | |
6c4aeab6 | 506 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 507 | if (CONSP (extra)) |
c2f5bfd6 | 508 | { |
6c4aeab6 | 509 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 510 | if (! NILP (val)) |
f0c55750 KH |
511 | return Qnil; |
512 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 513 | if (! NILP (val)) |
f0c55750 | 514 | return Qnil; |
c2f5bfd6 | 515 | } |
398dbf26 | 516 | |
f0c55750 | 517 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
518 | len = font_unparse_xlfd (spec, 0, name, 512); |
519 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 520 | return Qnil; |
5a189ffa KH |
521 | |
522 | val = assq_no_quit (QCscript, extra); | |
523 | script = CDR (val); | |
524 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 525 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 526 | { |
f0c55750 KH |
527 | /* Try iso10646-1 */ |
528 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
529 | ||
530 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 531 | { |
f0c55750 | 532 | strcpy (r, "iso10646-1"); |
5a189ffa | 533 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
534 | } |
535 | } | |
536 | if (NILP (list) && ! NILP (registry)) | |
537 | { | |
37470f4d | 538 | /* Try alternate registries. */ |
f0c55750 | 539 | Lisp_Object alter; |
6c4aeab6 | 540 | |
f0c55750 KH |
541 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
542 | Vface_alternative_font_registry_alist), | |
543 | CONSP (alter))) | |
544 | { | |
545 | /* Pointer to REGISTRY-ENCODING field. */ | |
546 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
547 | ||
548 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
549 | if (STRINGP (XCAR (alter)) | |
550 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
551 | { | |
552 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 553 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
554 | if (! NILP (list)) |
555 | break; | |
556 | } | |
6c4aeab6 | 557 | } |
c2f5bfd6 | 558 | } |
37470f4d KH |
559 | if (NILP (list)) |
560 | { | |
561 | /* Try alias. */ | |
562 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
563 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
564 | { | |
565 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
566 | if (xfont_encode_coding_xlfd (name) < 0) | |
567 | return Qnil; | |
5a189ffa | 568 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 569 | } |
37470f4d | 570 | } |
398dbf26 | 571 | |
f0c55750 | 572 | return list; |
c2f5bfd6 KH |
573 | } |
574 | ||
6e34c9c1 | 575 | static Lisp_Object |
971de7fb | 576 | xfont_match (Lisp_Object frame, Lisp_Object spec) |
6e34c9c1 KH |
577 | { |
578 | FRAME_PTR f = XFRAME (frame); | |
579 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
580 | Lisp_Object extra, val, entity; | |
6a705b23 | 581 | char name[512]; |
6e34c9c1 KH |
582 | XFontStruct *xfont; |
583 | unsigned long value; | |
584 | ||
585 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
586 | val = assq_no_quit (QCname, extra); | |
587 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 588 | { |
6a705b23 | 589 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 590 | return Qnil; |
f0c55750 | 591 | } |
6a705b23 KH |
592 | else if (SBYTES (XCDR (val)) < 512) |
593 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
f0c55750 | 594 | else |
6a705b23 KH |
595 | return Qnil; |
596 | if (xfont_encode_coding_xlfd (name) < 0) | |
597 | return Qnil; | |
6e34c9c1 | 598 | |
9c6d1df5 | 599 | BLOCK_INPUT; |
6e34c9c1 | 600 | entity = Qnil; |
6e34c9c1 KH |
601 | xfont = XLoadQueryFont (display, name); |
602 | if (xfont) | |
603 | { | |
604 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
605 | { | |
606 | int len; | |
6a705b23 | 607 | char *s; |
6e34c9c1 | 608 | |
6a705b23 KH |
609 | s = (char *) XGetAtomName (display, (Atom) value); |
610 | len = strlen (s); | |
6e34c9c1 KH |
611 | |
612 | /* If DXPC (a Differential X Protocol Compressor) | |
613 | Ver.3.7 is running, XGetAtomName will return null | |
614 | string. We must avoid such a name. */ | |
615 | if (len > 0) | |
616 | { | |
f0c55750 | 617 | entity = font_make_entity (); |
6e34c9c1 | 618 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 619 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
620 | if (font_parse_xlfd (name, entity) < 0) |
621 | entity = Qnil; | |
622 | } | |
6a705b23 | 623 | XFree (s); |
6e34c9c1 KH |
624 | } |
625 | XFreeFont (display, xfont); | |
626 | } | |
9c6d1df5 | 627 | UNBLOCK_INPUT; |
6e34c9c1 | 628 | |
678dca3d | 629 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
630 | return entity; |
631 | } | |
632 | ||
c2f5bfd6 | 633 | static Lisp_Object |
971de7fb | 634 | xfont_list_family (Lisp_Object frame) |
c2f5bfd6 KH |
635 | { |
636 | FRAME_PTR f = XFRAME (frame); | |
637 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
638 | char **names; | |
639 | int num_fonts, i; | |
640 | Lisp_Object list; | |
641 | char *last_family; | |
642 | int last_len; | |
643 | ||
644 | BLOCK_INPUT; | |
645 | x_catch_errors (dpyinfo->display); | |
646 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
647 | 0x8000, &num_fonts); | |
648 | if (x_had_errors_p (dpyinfo->display)) | |
649 | { | |
650 | /* This error is perhaps due to insufficient memory on X server. | |
651 | Let's just ignore it. */ | |
652 | x_clear_errors (dpyinfo->display); | |
653 | num_fonts = 0; | |
654 | } | |
655 | ||
656 | list = Qnil; | |
657 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
658 | { | |
6a705b23 | 659 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 660 | Lisp_Object family; |
6a705b23 | 661 | int decoded_len; |
c2f5bfd6 KH |
662 | |
663 | p0++; /* skip the leading '-' */ | |
664 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
665 | if (! *p0) | |
666 | continue; | |
667 | p1 = ++p0; | |
668 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
669 | if (! *p1 || p1 == p0) | |
670 | continue; | |
671 | if (last_len == p1 - p0 | |
672 | && bcmp (last_family, p0, last_len) == 0) | |
673 | continue; | |
674 | last_len = p1 - p0; | |
675 | last_family = p0; | |
6a705b23 KH |
676 | |
677 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
678 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 679 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
680 | list = Fcons (family, list); |
681 | } | |
682 | ||
683 | XFreeFontNames (names); | |
684 | x_uncatch_errors (); | |
685 | UNBLOCK_INPUT; | |
686 | ||
687 | return list; | |
688 | } | |
689 | ||
f0c55750 KH |
690 | extern Lisp_Object QCavgwidth; |
691 | ||
692 | static Lisp_Object | |
971de7fb | 693 | xfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 KH |
694 | { |
695 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
696 | Display *display = dpyinfo->display; | |
6a705b23 | 697 | char name[512]; |
c2f5bfd6 KH |
698 | int len; |
699 | unsigned long value; | |
700 | Lisp_Object registry; | |
701 | struct charset *encoding, *repertory; | |
f0c55750 | 702 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
703 | struct font *font; |
704 | XFontStruct *xfont; | |
705 | ||
706 | /* At first, check if we know how to encode characters for this | |
707 | font. */ | |
708 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 709 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 710 | { |
678dca3d | 711 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
712 | return Qnil; |
713 | } | |
c2f5bfd6 KH |
714 | |
715 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
716 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
717 | else if (pixel_size == 0) |
718 | { | |
719 | if (FRAME_FONT (f)) | |
720 | pixel_size = FRAME_FONT (f)->pixel_size; | |
721 | else | |
722 | pixel_size = 14; | |
723 | } | |
6a705b23 KH |
724 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
725 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 726 | { |
678dca3d | 727 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
728 | return Qnil; |
729 | } | |
c2f5bfd6 KH |
730 | |
731 | BLOCK_INPUT; | |
732 | x_catch_errors (display); | |
733 | xfont = XLoadQueryFont (display, name); | |
734 | if (x_had_errors_p (display)) | |
735 | { | |
736 | /* This error is perhaps due to insufficient memory on X server. | |
737 | Let's just ignore it. */ | |
738 | x_clear_errors (display); | |
739 | xfont = NULL; | |
740 | } | |
2f73901f KH |
741 | else if (! xfont) |
742 | { | |
743 | /* Some version of X lists: | |
744 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
745 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
746 | but can open only: | |
747 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
748 | and | |
749 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
750 | So, we try again with wildcards in RESX and RESY. */ | |
751 | Lisp_Object temp; | |
752 | ||
753 | temp = Fcopy_font_spec (entity); | |
754 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
755 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
756 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 757 | { |
678dca3d | 758 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
759 | return Qnil; |
760 | } | |
761 | xfont = XLoadQueryFont (display, name); | |
762 | if (x_had_errors_p (display)) | |
763 | { | |
764 | /* This error is perhaps due to insufficient memory on X server. | |
765 | Let's just ignore it. */ | |
766 | x_clear_errors (display); | |
767 | xfont = NULL; | |
768 | } | |
769 | } | |
f0c55750 KH |
770 | fullname = Qnil; |
771 | /* Try to get the full name of FONT. */ | |
772 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
773 | { | |
774 | char *p0, *p; | |
775 | int dashes = 0; | |
776 | ||
8510724d | 777 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
778 | /* Count the number of dashes in the "full name". |
779 | If it is too few, this isn't really the font's full name, | |
780 | so don't use it. | |
781 | In X11R4, the fonts did not come with their canonical names | |
782 | stored in them. */ | |
783 | while (*p) | |
784 | { | |
785 | if (*p == '-') | |
786 | dashes++; | |
787 | p++; | |
788 | } | |
789 | ||
790 | if (dashes >= 13) | |
6a705b23 KH |
791 | { |
792 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
793 | fullname = Fdowncase (make_string (name, len)); | |
794 | } | |
f0c55750 KH |
795 | XFree (p0); |
796 | } | |
c2f5bfd6 KH |
797 | x_uncatch_errors (); |
798 | UNBLOCK_INPUT; | |
799 | ||
800 | if (! xfont) | |
c8e0e16d | 801 | { |
678dca3d | 802 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
803 | return Qnil; |
804 | } | |
f0c55750 | 805 | |
947eecfb KH |
806 | font_object = font_make_object (VECSIZE (struct xfont_info), |
807 | entity, pixel_size); | |
f0c55750 KH |
808 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
809 | if (STRINGP (fullname)) | |
6a705b23 KH |
810 | { |
811 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
812 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
813 | } | |
f0c55750 | 814 | else |
6a705b23 KH |
815 | { |
816 | char buf[512]; | |
817 | ||
818 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
819 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
820 | } | |
f0c55750 KH |
821 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
822 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
823 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
824 | font = XFONT_OBJECT (font_object); | |
825 | ((struct xfont_info *) font)->xfont = xfont; | |
826 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
827 | font->pixel_size = pixel_size; |
828 | font->driver = &xfont_driver; | |
c2f5bfd6 | 829 | font->encoding_charset = encoding->id; |
1886668d | 830 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
831 | font->ascent = xfont->ascent; |
832 | font->descent = xfont->descent; | |
f0c55750 KH |
833 | font->height = font->ascent + font->descent; |
834 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
835 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
836 | { | |
837 | /* Fixed width font. */ | |
f0c55750 | 838 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
839 | } |
840 | else | |
841 | { | |
c2f5bfd6 | 842 | XCharStruct *pcm; |
f0c55750 KH |
843 | XChar2b char2b; |
844 | Lisp_Object val; | |
c2f5bfd6 KH |
845 | |
846 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
847 | pcm = xfont_get_pcm (xfont, &char2b); | |
848 | if (pcm) | |
f0c55750 | 849 | font->space_width = pcm->width; |
c2f5bfd6 | 850 | else |
f0c55750 KH |
851 | font->space_width = 0; |
852 | ||
853 | val = Ffont_get (font_object, QCavgwidth); | |
854 | if (INTEGERP (val)) | |
855 | font->average_width = XINT (val); | |
856 | if (font->average_width < 0) | |
857 | font->average_width = - font->average_width; | |
858 | if (font->average_width == 0 | |
859 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 860 | { |
f0c55750 | 861 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 862 | |
f0c55750 KH |
863 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
864 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
865 | width += pcm->width, n++; | |
4f64a164 KH |
866 | if (n > 0) |
867 | font->average_width = width / n; | |
c2f5bfd6 | 868 | } |
4f64a164 KH |
869 | if (font->average_width == 0) |
870 | /* No easy way other than this to get a reasonable | |
871 | average_width. */ | |
872 | font->average_width | |
873 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 874 | } |
c2f5bfd6 | 875 | |
f0c55750 KH |
876 | BLOCK_INPUT; |
877 | font->underline_thickness | |
878 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
879 | ? (long) value : 0); | |
880 | font->underline_position | |
881 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
882 | ? (long) value : -1); | |
883 | font->baseline_offset | |
c2f5bfd6 KH |
884 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
885 | ? (long) value : 0); | |
f0c55750 | 886 | font->relative_compose |
c2f5bfd6 KH |
887 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
888 | ? (long) value : 0); | |
f0c55750 | 889 | font->default_ascent |
c2f5bfd6 KH |
890 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
891 | ? (long) value : 0); | |
c2f5bfd6 KH |
892 | UNBLOCK_INPUT; |
893 | ||
f0c55750 KH |
894 | if (NILP (fullname)) |
895 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
896 | font->vertical_centering |
897 | = (STRINGP (Vvertical_centering_font_regexp) | |
898 | && (fast_string_match_ignore_case | |
899 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 900 | |
f0c55750 | 901 | return font_object; |
c2f5bfd6 KH |
902 | } |
903 | ||
904 | static void | |
971de7fb | 905 | xfont_close (FRAME_PTR f, struct font *font) |
c2f5bfd6 KH |
906 | { |
907 | BLOCK_INPUT; | |
f0c55750 | 908 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 909 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
910 | } |
911 | ||
912 | static int | |
971de7fb | 913 | xfont_prepare_face (FRAME_PTR f, struct face *face) |
c2f5bfd6 KH |
914 | { |
915 | BLOCK_INPUT; | |
f0c55750 KH |
916 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
917 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
918 | UNBLOCK_INPUT; |
919 | ||
920 | return 0; | |
921 | } | |
922 | ||
c2f5bfd6 | 923 | static int |
971de7fb | 924 | xfont_has_char (Lisp_Object font, int c) |
c2f5bfd6 | 925 | { |
bd0af90d | 926 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 927 | struct charset *encoding; |
bd0af90d | 928 | struct charset *repertory = NULL; |
c2f5bfd6 | 929 | |
bd0af90d KH |
930 | if (EQ (registry, Qiso10646_1)) |
931 | { | |
5a189ffa | 932 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
933 | /* We use a font of `ja' and `ko' adstyle only for a character |
934 | in JISX0208 and KSC5601 charsets respectively. */ | |
935 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
936 | && charset_jisx0208 >= 0) | |
5a189ffa | 937 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
938 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
939 | && charset_ksc5601 >= 0) | |
5a189ffa | 940 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
941 | } |
942 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
943 | /* Unknown REGISTRY, not usable. */ | |
944 | return 0; | |
d156542d KH |
945 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
946 | return 1; | |
c2f5bfd6 KH |
947 | if (! repertory) |
948 | return -1; | |
949 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
950 | } | |
951 | ||
952 | static unsigned | |
971de7fb | 953 | xfont_encode_char (struct font *font, int c) |
c2f5bfd6 | 954 | { |
f0c55750 | 955 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
956 | struct charset *charset; |
957 | unsigned code; | |
958 | XChar2b char2b; | |
959 | ||
960 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
961 | code = ENCODE_CHAR (charset, c); | |
962 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 963 | return FONT_INVALID_CODE; |
1886668d | 964 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 965 | { |
1886668d | 966 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 967 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 968 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 969 | } |
88649c62 KH |
970 | char2b.byte1 = code >> 8; |
971 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 972 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
973 | } |
974 | ||
975 | static int | |
971de7fb | 976 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 | 977 | { |
f0c55750 | 978 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 979 | int width = 0; |
41fa3e2c | 980 | int i, first, x; |
c2f5bfd6 KH |
981 | |
982 | if (metrics) | |
983 | bzero (metrics, sizeof (struct font_metrics)); | |
41fa3e2c | 984 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
985 | { |
986 | XChar2b char2b; | |
987 | static XCharStruct *pcm; | |
988 | ||
989 | if (code[i] >= 0x10000) | |
990 | continue; | |
991 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 992 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
993 | if (! pcm) |
994 | continue; | |
41fa3e2c KH |
995 | if (first) |
996 | { | |
997 | if (metrics) | |
998 | { | |
999 | metrics->lbearing = pcm->lbearing; | |
1000 | metrics->rbearing = pcm->rbearing; | |
1001 | metrics->ascent = pcm->ascent; | |
1002 | metrics->descent = pcm->descent; | |
1003 | } | |
1004 | first = 0; | |
1005 | } | |
1006 | else | |
1007 | { | |
1008 | if (metrics) | |
1009 | { | |
1010 | if (metrics->lbearing > width + pcm->lbearing) | |
1011 | metrics->lbearing = width + pcm->lbearing; | |
1012 | if (metrics->rbearing < width + pcm->rbearing) | |
1013 | metrics->rbearing = width + pcm->rbearing; | |
1014 | if (metrics->ascent < pcm->ascent) | |
1015 | metrics->ascent = pcm->ascent; | |
1016 | if (metrics->descent < pcm->descent) | |
1017 | metrics->descent = pcm->descent; | |
1018 | } | |
1019 | } | |
c2f5bfd6 KH |
1020 | width += pcm->width; |
1021 | } | |
1022 | if (metrics) | |
1023 | metrics->width = width; | |
1024 | return width; | |
1025 | } | |
1026 | ||
1027 | static int | |
971de7fb | 1028 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, int with_background) |
c2f5bfd6 | 1029 | { |
f0c55750 | 1030 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1031 | int len = to - from; |
6e34c9c1 | 1032 | GC gc = s->gc; |
298fd5b1 | 1033 | int i; |
6e34c9c1 | 1034 | |
f0c55750 | 1035 | if (s->gc != s->face->gc) |
6e34c9c1 | 1036 | { |
d45fefc7 | 1037 | BLOCK_INPUT; |
f0c55750 | 1038 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1039 | UNBLOCK_INPUT; |
6e34c9c1 | 1040 | } |
c2f5bfd6 KH |
1041 | |
1042 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1043 | { | |
1044 | char *str; | |
c2f5bfd6 KH |
1045 | USE_SAFE_ALLOCA; |
1046 | ||
1047 | SAFE_ALLOCA (str, char *, len); | |
1048 | for (i = 0; i < len ; i++) | |
1049 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1050 | BLOCK_INPUT; |
c2f5bfd6 | 1051 | if (with_background > 0) |
298fd5b1 KH |
1052 | { |
1053 | if (s->padding_p) | |
1054 | for (i = 0; i < len; i++) | |
1055 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1056 | gc, x + i, y, str + i, 1); | |
1057 | else | |
1058 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1059 | gc, x, y, str, len); | |
1060 | } | |
c2f5bfd6 | 1061 | else |
298fd5b1 KH |
1062 | { |
1063 | if (s->padding_p) | |
1064 | for (i = 0; i < len; i++) | |
1065 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1066 | gc, x + i, y, str + i, 1); | |
1067 | else | |
1068 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1069 | gc, x, y, str, len); | |
1070 | } | |
d45fefc7 | 1071 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1072 | SAFE_FREE (); |
1073 | return s->nchars; | |
1074 | } | |
1075 | ||
d45fefc7 | 1076 | BLOCK_INPUT; |
c2f5bfd6 | 1077 | if (with_background > 0) |
298fd5b1 KH |
1078 | { |
1079 | if (s->padding_p) | |
1080 | for (i = 0; i < len; i++) | |
1081 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1082 | gc, x + i, y, s->char2b + from + i, 1); | |
1083 | else | |
1084 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1085 | gc, x, y, s->char2b + from, len); | |
1086 | } | |
c2f5bfd6 | 1087 | else |
298fd5b1 KH |
1088 | { |
1089 | if (s->padding_p) | |
1090 | for (i = 0; i < len; i++) | |
1091 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1092 | gc, x + i, y, s->char2b + from + i, 1); | |
1093 | else | |
1094 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1095 | gc, x, y, s->char2b + from, len); | |
1096 | } | |
d45fefc7 | 1097 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1098 | |
1099 | return len; | |
1100 | } | |
1101 | ||
f0c55750 | 1102 | static int |
971de7fb | 1103 | xfont_check (FRAME_PTR f, struct font *font) |
f0c55750 KH |
1104 | { |
1105 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1106 | ||
1107 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1108 | } | |
1109 | ||
c2f5bfd6 KH |
1110 | \f |
1111 | void | |
971de7fb | 1112 | syms_of_xfont (void) |
c2f5bfd6 | 1113 | { |
5a189ffa | 1114 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1115 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1116 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1117 | Lisp_Object args[2]; | |
1118 | args[0] = QCtest; | |
1119 | args[1] = Qequal; | |
1120 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1121 | } | |
5a189ffa | 1122 | staticpro (&xfont_scratch_props); |
46306a17 | 1123 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1124 | xfont_driver.type = Qx; |
1125 | register_font_driver (&xfont_driver, NULL); | |
1126 | } | |
885b7d09 MB |
1127 | |
1128 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
1129 | (do not change this comment) */ |