Commit | Line | Data |
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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
76b6f707 GM |
2 | Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008, 2009 | |
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, | |
154 | xfont_check | |
c2f5bfd6 KH |
155 | }; |
156 | ||
157 | extern Lisp_Object QCname; | |
158 | ||
159 | static Lisp_Object | |
feb2737b KH |
160 | xfont_get_cache (f) |
161 | FRAME_PTR f; | |
c2f5bfd6 | 162 | { |
feb2737b | 163 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
164 | |
165 | return (dpyinfo->name_list_element); | |
166 | } | |
167 | ||
c2f5bfd6 KH |
168 | extern Lisp_Object Vface_alternative_font_registry_alist; |
169 | ||
f0c55750 KH |
170 | static int |
171 | compare_font_names (const void *name1, const void *name2) | |
172 | { | |
7740d2c7 KH |
173 | return xstrcasecmp (*(const unsigned char **) name1, |
174 | *(const unsigned char **) name2); | |
f0c55750 KH |
175 | } |
176 | ||
6a705b23 KH |
177 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
178 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
179 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
180 | least twice (plus 1) as large as XLFD. */ | |
181 | ||
182 | static int | |
183 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
184 | { | |
185 | char *p0 = xlfd, *p1 = output; | |
186 | int c; | |
8510724d | 187 | |
6a705b23 KH |
188 | while (*p0) |
189 | { | |
190 | c = *(unsigned char *) p0++; | |
191 | p1 += CHAR_STRING (c, p1); | |
192 | if (--len == 0) | |
193 | break; | |
194 | } | |
195 | *p1 = 0; | |
196 | return (p1 - output); | |
197 | } | |
198 | ||
199 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
200 | resulting byte length. If XLFD contains unencodable character, | |
201 | return -1. */ | |
202 | ||
203 | static int | |
204 | xfont_encode_coding_xlfd (char *xlfd) | |
205 | { | |
206 | const unsigned char *p0 = (unsigned char *) xlfd; | |
207 | unsigned char *p1 = (unsigned char *) xlfd; | |
208 | int len = 0; | |
8510724d | 209 | |
6a705b23 KH |
210 | while (*p0) |
211 | { | |
212 | int c = STRING_CHAR_ADVANCE (p0); | |
213 | ||
214 | if (c >= 0x100) | |
215 | return -1; | |
216 | *p1++ = c; | |
217 | len++; | |
218 | } | |
219 | *p1 = 0; | |
220 | return len; | |
221 | } | |
222 | ||
5a189ffa KH |
223 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
224 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
225 | registry corresponds to ENCODING and REPERTORY. | |
226 | Return 1 if supported, return 0 otherwise. */ | |
227 | ||
228 | static int | |
229 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
230 | struct charset *encoding, struct charset *repertory) | |
231 | { | |
232 | struct charset *charset = repertory ? repertory : encoding; | |
233 | ||
234 | if (CONSP (chars)) | |
235 | { | |
236 | for (; CONSP (chars); chars = XCDR (chars)) | |
237 | { | |
238 | int c = XINT (XCAR (chars)); | |
239 | unsigned code = ENCODE_CHAR (charset, c); | |
240 | XChar2b char2b; | |
241 | ||
242 | if (code == CHARSET_INVALID_CODE (charset)) | |
243 | break; | |
244 | if (! xfont) | |
245 | continue; | |
246 | if (code >= 0x10000) | |
247 | break; | |
248 | char2b.byte1 = code >> 8; | |
249 | char2b.byte2 = code & 0xFF; | |
250 | if (! xfont_get_pcm (xfont, &char2b)) | |
251 | break; | |
252 | } | |
253 | return (NILP (chars)); | |
254 | } | |
255 | else if (VECTORP (chars)) | |
256 | { | |
257 | int i; | |
258 | ||
259 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
260 | { | |
261 | int c = XINT (AREF (chars, i)); | |
262 | unsigned code = ENCODE_CHAR (charset, c); | |
263 | XChar2b char2b; | |
264 | ||
265 | if (code == CHARSET_INVALID_CODE (charset)) | |
266 | continue; | |
267 | if (! xfont) | |
268 | break; | |
269 | if (code >= 0x10000) | |
270 | continue; | |
271 | char2b.byte1 = code >> 8; | |
272 | char2b.byte2 = code & 0xFF; | |
273 | if (xfont_get_pcm (xfont, &char2b)) | |
274 | break; | |
275 | } | |
276 | return (i >= 0); | |
277 | } | |
278 | return 0; | |
279 | } | |
280 | ||
281 | /* A hash table recoding which font supports which scritps. Each key | |
282 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
283 | ADDSTYLE, and each value is a list of script symbols. | |
284 | ||
285 | We assume that fonts that have the same value in the above | |
286 | properties supports the same set of characters on all displays. */ | |
287 | ||
288 | static Lisp_Object xfont_scripts_cache; | |
289 | ||
290 | /* Re-usable vector to store characteristic font properites. */ | |
291 | static Lisp_Object xfont_scratch_props; | |
292 | ||
293 | extern Lisp_Object Qlatin; | |
294 | ||
295 | /* Return a list of scripts supported by the font of FONTNAME whose | |
296 | characteristic properties are in PROPS and whose encoding charset | |
297 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
298 | |
299 | static Lisp_Object | |
5a189ffa KH |
300 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
301 | struct charset *encoding) | |
302 | { | |
303 | Lisp_Object scripts; | |
304 | ||
305 | /* Two special cases to avoid opening rather big fonts. */ | |
306 | if (EQ (AREF (props, 2), Qja)) | |
307 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
308 | if (EQ (AREF (props, 2), Qko)) | |
309 | return Fcons (intern ("hangul"), Qnil); | |
310 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
311 | if (EQ (scripts, Qt)) | |
312 | { | |
313 | XFontStruct *xfont; | |
314 | Lisp_Object val; | |
315 | ||
316 | scripts = Qnil; | |
317 | xfont = XLoadQueryFont (display, fontname); | |
318 | if (xfont) | |
319 | { | |
320 | if (xfont->per_char) | |
321 | { | |
322 | for (val = Vscript_representative_chars; CONSP (val); | |
323 | val = XCDR (val)) | |
324 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
325 | { | |
326 | Lisp_Object script = XCAR (XCAR (val)); | |
327 | Lisp_Object chars = XCDR (XCAR (val)); | |
328 | ||
329 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
330 | scripts = Fcons (script, scripts); | |
331 | } | |
332 | } | |
333 | XFreeFont (display, xfont); | |
334 | } | |
335 | if (EQ (AREF (props, 3), Qiso10646_1) | |
336 | && NILP (Fmemq (Qlatin, scripts))) | |
337 | scripts = Fcons (Qlatin, scripts); | |
338 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
339 | } | |
340 | return scripts; | |
341 | } | |
342 | ||
343 | extern Lisp_Object Vscalable_fonts_allowed; | |
344 | ||
345 | static Lisp_Object | |
346 | xfont_list_pattern (Display *display, char *pattern, | |
347 | Lisp_Object registry, Lisp_Object script) | |
c2f5bfd6 | 348 | { |
6c4aeab6 | 349 | Lisp_Object list = Qnil; |
5a189ffa KH |
350 | Lisp_Object chars = Qnil; |
351 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
352 | int i, limit, num_fonts; |
353 | char **names; | |
6a705b23 KH |
354 | /* Large enough to decode the longest XLFD (255 bytes). */ |
355 | char buf[512]; | |
c2f5bfd6 | 356 | |
5a189ffa KH |
357 | if (! NILP (registry) |
358 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
359 | /* Unknown REGISTRY, not supported. */ | |
360 | return Qnil; | |
361 | if (! NILP (script)) | |
362 | { | |
363 | chars = assq_no_quit (script, Vscript_representative_chars); | |
364 | if (NILP (chars)) | |
365 | /* We can't tell whether or not a font supports SCRIPT. */ | |
366 | return Qnil; | |
367 | chars = XCDR (chars); | |
368 | if (repertory) | |
369 | { | |
370 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
371 | return Qnil; | |
372 | script = Qnil; | |
373 | } | |
374 | } | |
5a189ffa | 375 | |
c2f5bfd6 | 376 | BLOCK_INPUT; |
6c4aeab6 | 377 | x_catch_errors (display); |
c2f5bfd6 | 378 | |
6c4aeab6 | 379 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 380 | { |
6c4aeab6 KH |
381 | names = XListFonts (display, pattern, limit, &num_fonts); |
382 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
383 | { |
384 | /* This error is perhaps due to insufficient memory on X | |
385 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
386 | x_clear_errors (display); |
387 | num_fonts = 0; | |
388 | break; | |
c2f5bfd6 | 389 | } |
6c4aeab6 KH |
390 | if (num_fonts < limit) |
391 | break; | |
392 | XFreeFontNames (names); | |
393 | } | |
394 | ||
f0c55750 | 395 | if (num_fonts > 0) |
6c4aeab6 | 396 | { |
f0c55750 | 397 | char **indices = alloca (sizeof (char *) * num_fonts); |
46306a17 | 398 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 399 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 400 | |
46306a17 SM |
401 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
402 | props[i] = Qnil; | |
f0c55750 KH |
403 | for (i = 0; i < num_fonts; i++) |
404 | indices[i] = names[i]; | |
405 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 406 | |
f0c55750 | 407 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 408 | { |
f0c55750 | 409 | Lisp_Object entity; |
6c4aeab6 | 410 | |
05131107 | 411 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 412 | continue; |
f0c55750 | 413 | entity = font_make_entity (); |
6a705b23 | 414 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
4fa58085 KH |
415 | if (font_parse_xlfd (buf, entity) < 0) |
416 | continue; | |
5a189ffa KH |
417 | ASET (entity, FONT_TYPE_INDEX, Qx); |
418 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
419 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
420 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
421 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
422 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
423 | continue; | |
424 | /* Avoid not-allowed scalable fonts. */ | |
425 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 426 | { |
4fa58085 KH |
427 | int size = 0; |
428 | ||
429 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
430 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
431 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
432 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
433 | if (size == 0) | |
6c4aeab6 | 434 | continue; |
5a189ffa KH |
435 | } |
436 | else if (CONSP (Vscalable_fonts_allowed)) | |
437 | { | |
438 | Lisp_Object tail, elt; | |
439 | ||
440 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
441 | tail = XCDR (tail)) | |
f0c55750 | 442 | { |
5a189ffa KH |
443 | elt = XCAR (tail); |
444 | if (STRINGP (elt) | |
445 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
446 | break; | |
f0c55750 | 447 | } |
5a189ffa KH |
448 | if (! CONSP (tail)) |
449 | continue; | |
c2f5bfd6 | 450 | } |
f0c55750 | 451 | |
4fa58085 KH |
452 | /* Avoid fonts of invalid registry. */ |
453 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
454 | continue; | |
455 | ||
5a189ffa KH |
456 | /* Update encoding and repertory if necessary. */ |
457 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
458 | { | |
459 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
460 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
461 | encoding = NULL; | |
462 | } | |
463 | if (! encoding) | |
464 | /* Unknown REGISTRY, not supported. */ | |
465 | continue; | |
466 | if (repertory) | |
467 | { | |
468 | if (NILP (script) | |
469 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
470 | list = Fcons (entity, list); | |
471 | continue; | |
472 | } | |
473 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
474 | sizeof (Lisp_Object) * 7) | |
475 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
476 | { | |
477 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
478 | sizeof (Lisp_Object) * 7); | |
479 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
480 | scripts = xfont_supported_scripts (display, indices[i], | |
481 | xfont_scratch_props, encoding); | |
482 | } | |
483 | if (NILP (script) | |
484 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 485 | list = Fcons (entity, list); |
c2f5bfd6 | 486 | } |
019e13ef | 487 | XFreeFontNames (names); |
c2f5bfd6 KH |
488 | } |
489 | ||
490 | x_uncatch_errors (); | |
491 | UNBLOCK_INPUT; | |
492 | ||
678dca3d | 493 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
494 | return list; |
495 | } | |
c2f5bfd6 | 496 | |
6c4aeab6 KH |
497 | static Lisp_Object |
498 | xfont_list (frame, spec) | |
499 | Lisp_Object frame, spec; | |
500 | { | |
501 | FRAME_PTR f = XFRAME (frame); | |
502 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 503 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 504 | int len; |
6a705b23 KH |
505 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
506 | char name[512]; | |
8510724d | 507 | |
6c4aeab6 | 508 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 509 | if (CONSP (extra)) |
c2f5bfd6 | 510 | { |
6c4aeab6 | 511 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 512 | if (! NILP (val)) |
f0c55750 KH |
513 | return Qnil; |
514 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 515 | if (! NILP (val)) |
f0c55750 | 516 | return Qnil; |
c2f5bfd6 | 517 | } |
398dbf26 | 518 | |
f0c55750 | 519 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
520 | len = font_unparse_xlfd (spec, 0, name, 512); |
521 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 522 | return Qnil; |
5a189ffa KH |
523 | |
524 | val = assq_no_quit (QCscript, extra); | |
525 | script = CDR (val); | |
526 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 527 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 528 | { |
f0c55750 KH |
529 | /* Try iso10646-1 */ |
530 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
531 | ||
532 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 533 | { |
f0c55750 | 534 | strcpy (r, "iso10646-1"); |
5a189ffa | 535 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
536 | } |
537 | } | |
538 | if (NILP (list) && ! NILP (registry)) | |
539 | { | |
37470f4d | 540 | /* Try alternate registries. */ |
f0c55750 | 541 | Lisp_Object alter; |
6c4aeab6 | 542 | |
f0c55750 KH |
543 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
544 | Vface_alternative_font_registry_alist), | |
545 | CONSP (alter))) | |
546 | { | |
547 | /* Pointer to REGISTRY-ENCODING field. */ | |
548 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
549 | ||
550 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
551 | if (STRINGP (XCAR (alter)) | |
552 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
553 | { | |
554 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 555 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
556 | if (! NILP (list)) |
557 | break; | |
558 | } | |
6c4aeab6 | 559 | } |
c2f5bfd6 | 560 | } |
37470f4d KH |
561 | if (NILP (list)) |
562 | { | |
563 | /* Try alias. */ | |
564 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
565 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
566 | { | |
567 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
568 | if (xfont_encode_coding_xlfd (name) < 0) | |
569 | return Qnil; | |
5a189ffa | 570 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 571 | } |
37470f4d | 572 | } |
398dbf26 | 573 | |
f0c55750 | 574 | return list; |
c2f5bfd6 KH |
575 | } |
576 | ||
6e34c9c1 KH |
577 | static Lisp_Object |
578 | xfont_match (frame, spec) | |
579 | Lisp_Object frame, spec; | |
580 | { | |
581 | FRAME_PTR f = XFRAME (frame); | |
582 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
583 | Lisp_Object extra, val, entity; | |
6a705b23 | 584 | char name[512]; |
6e34c9c1 KH |
585 | XFontStruct *xfont; |
586 | unsigned long value; | |
587 | ||
588 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
589 | val = assq_no_quit (QCname, extra); | |
590 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 591 | { |
6a705b23 | 592 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 593 | return Qnil; |
f0c55750 | 594 | } |
6a705b23 KH |
595 | else if (SBYTES (XCDR (val)) < 512) |
596 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
f0c55750 | 597 | else |
6a705b23 KH |
598 | return Qnil; |
599 | if (xfont_encode_coding_xlfd (name) < 0) | |
600 | return Qnil; | |
6e34c9c1 | 601 | |
9c6d1df5 | 602 | BLOCK_INPUT; |
6e34c9c1 | 603 | entity = Qnil; |
6e34c9c1 KH |
604 | xfont = XLoadQueryFont (display, name); |
605 | if (xfont) | |
606 | { | |
607 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
608 | { | |
609 | int len; | |
6a705b23 | 610 | char *s; |
6e34c9c1 | 611 | |
6a705b23 KH |
612 | s = (char *) XGetAtomName (display, (Atom) value); |
613 | len = strlen (s); | |
6e34c9c1 KH |
614 | |
615 | /* If DXPC (a Differential X Protocol Compressor) | |
616 | Ver.3.7 is running, XGetAtomName will return null | |
617 | string. We must avoid such a name. */ | |
618 | if (len > 0) | |
619 | { | |
f0c55750 | 620 | entity = font_make_entity (); |
6e34c9c1 | 621 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 622 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
623 | if (font_parse_xlfd (name, entity) < 0) |
624 | entity = Qnil; | |
625 | } | |
6a705b23 | 626 | XFree (s); |
6e34c9c1 KH |
627 | } |
628 | XFreeFont (display, xfont); | |
629 | } | |
9c6d1df5 | 630 | UNBLOCK_INPUT; |
6e34c9c1 | 631 | |
678dca3d | 632 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
633 | return entity; |
634 | } | |
635 | ||
c2f5bfd6 KH |
636 | static Lisp_Object |
637 | xfont_list_family (frame) | |
9df50a31 | 638 | Lisp_Object frame; |
c2f5bfd6 KH |
639 | { |
640 | FRAME_PTR f = XFRAME (frame); | |
641 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
642 | char **names; | |
643 | int num_fonts, i; | |
644 | Lisp_Object list; | |
645 | char *last_family; | |
646 | int last_len; | |
647 | ||
648 | BLOCK_INPUT; | |
649 | x_catch_errors (dpyinfo->display); | |
650 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
651 | 0x8000, &num_fonts); | |
652 | if (x_had_errors_p (dpyinfo->display)) | |
653 | { | |
654 | /* This error is perhaps due to insufficient memory on X server. | |
655 | Let's just ignore it. */ | |
656 | x_clear_errors (dpyinfo->display); | |
657 | num_fonts = 0; | |
658 | } | |
659 | ||
660 | list = Qnil; | |
661 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
662 | { | |
6a705b23 | 663 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 664 | Lisp_Object family; |
6a705b23 | 665 | int decoded_len; |
c2f5bfd6 KH |
666 | |
667 | p0++; /* skip the leading '-' */ | |
668 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
669 | if (! *p0) | |
670 | continue; | |
671 | p1 = ++p0; | |
672 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
673 | if (! *p1 || p1 == p0) | |
674 | continue; | |
675 | if (last_len == p1 - p0 | |
676 | && bcmp (last_family, p0, last_len) == 0) | |
677 | continue; | |
678 | last_len = p1 - p0; | |
679 | last_family = p0; | |
6a705b23 KH |
680 | |
681 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
682 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 683 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
684 | list = Fcons (family, list); |
685 | } | |
686 | ||
687 | XFreeFontNames (names); | |
688 | x_uncatch_errors (); | |
689 | UNBLOCK_INPUT; | |
690 | ||
691 | return list; | |
692 | } | |
693 | ||
f0c55750 KH |
694 | extern Lisp_Object QCavgwidth; |
695 | ||
696 | static Lisp_Object | |
c2f5bfd6 KH |
697 | xfont_open (f, entity, pixel_size) |
698 | FRAME_PTR f; | |
699 | Lisp_Object entity; | |
700 | int pixel_size; | |
701 | { | |
702 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
703 | Display *display = dpyinfo->display; | |
6a705b23 | 704 | char name[512]; |
c2f5bfd6 KH |
705 | int len; |
706 | unsigned long value; | |
707 | Lisp_Object registry; | |
708 | struct charset *encoding, *repertory; | |
f0c55750 | 709 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
710 | struct font *font; |
711 | XFontStruct *xfont; | |
712 | ||
713 | /* At first, check if we know how to encode characters for this | |
714 | font. */ | |
715 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 716 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 717 | { |
678dca3d | 718 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
719 | return Qnil; |
720 | } | |
c2f5bfd6 KH |
721 | |
722 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
723 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
724 | else if (pixel_size == 0) |
725 | { | |
726 | if (FRAME_FONT (f)) | |
727 | pixel_size = FRAME_FONT (f)->pixel_size; | |
728 | else | |
729 | pixel_size = 14; | |
730 | } | |
6a705b23 KH |
731 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
732 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 733 | { |
678dca3d | 734 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
735 | return Qnil; |
736 | } | |
c2f5bfd6 KH |
737 | |
738 | BLOCK_INPUT; | |
739 | x_catch_errors (display); | |
740 | xfont = XLoadQueryFont (display, name); | |
741 | if (x_had_errors_p (display)) | |
742 | { | |
743 | /* This error is perhaps due to insufficient memory on X server. | |
744 | Let's just ignore it. */ | |
745 | x_clear_errors (display); | |
746 | xfont = NULL; | |
747 | } | |
2f73901f KH |
748 | else if (! xfont) |
749 | { | |
750 | /* Some version of X lists: | |
751 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
752 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
753 | but can open only: | |
754 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
755 | and | |
756 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
757 | So, we try again with wildcards in RESX and RESY. */ | |
758 | Lisp_Object temp; | |
759 | ||
760 | temp = Fcopy_font_spec (entity); | |
761 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
762 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
763 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 764 | { |
678dca3d | 765 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
766 | return Qnil; |
767 | } | |
768 | xfont = XLoadQueryFont (display, name); | |
769 | if (x_had_errors_p (display)) | |
770 | { | |
771 | /* This error is perhaps due to insufficient memory on X server. | |
772 | Let's just ignore it. */ | |
773 | x_clear_errors (display); | |
774 | xfont = NULL; | |
775 | } | |
776 | } | |
f0c55750 KH |
777 | fullname = Qnil; |
778 | /* Try to get the full name of FONT. */ | |
779 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
780 | { | |
781 | char *p0, *p; | |
782 | int dashes = 0; | |
783 | ||
8510724d | 784 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
785 | /* Count the number of dashes in the "full name". |
786 | If it is too few, this isn't really the font's full name, | |
787 | so don't use it. | |
788 | In X11R4, the fonts did not come with their canonical names | |
789 | stored in them. */ | |
790 | while (*p) | |
791 | { | |
792 | if (*p == '-') | |
793 | dashes++; | |
794 | p++; | |
795 | } | |
796 | ||
797 | if (dashes >= 13) | |
6a705b23 KH |
798 | { |
799 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
800 | fullname = Fdowncase (make_string (name, len)); | |
801 | } | |
f0c55750 KH |
802 | XFree (p0); |
803 | } | |
c2f5bfd6 KH |
804 | x_uncatch_errors (); |
805 | UNBLOCK_INPUT; | |
806 | ||
807 | if (! xfont) | |
c8e0e16d | 808 | { |
678dca3d | 809 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
810 | return Qnil; |
811 | } | |
f0c55750 | 812 | |
947eecfb KH |
813 | font_object = font_make_object (VECSIZE (struct xfont_info), |
814 | entity, pixel_size); | |
f0c55750 KH |
815 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
816 | if (STRINGP (fullname)) | |
6a705b23 KH |
817 | { |
818 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
819 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
820 | } | |
f0c55750 | 821 | else |
6a705b23 KH |
822 | { |
823 | char buf[512]; | |
824 | ||
825 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
826 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
827 | } | |
f0c55750 KH |
828 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
829 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
830 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
831 | font = XFONT_OBJECT (font_object); | |
832 | ((struct xfont_info *) font)->xfont = xfont; | |
833 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
834 | font->pixel_size = pixel_size; |
835 | font->driver = &xfont_driver; | |
c2f5bfd6 | 836 | font->encoding_charset = encoding->id; |
1886668d | 837 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
838 | font->ascent = xfont->ascent; |
839 | font->descent = xfont->descent; | |
f0c55750 KH |
840 | font->height = font->ascent + font->descent; |
841 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
842 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
843 | { | |
844 | /* Fixed width font. */ | |
f0c55750 | 845 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
846 | } |
847 | else | |
848 | { | |
c2f5bfd6 | 849 | XCharStruct *pcm; |
f0c55750 KH |
850 | XChar2b char2b; |
851 | Lisp_Object val; | |
c2f5bfd6 KH |
852 | |
853 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
854 | pcm = xfont_get_pcm (xfont, &char2b); | |
855 | if (pcm) | |
f0c55750 | 856 | font->space_width = pcm->width; |
c2f5bfd6 | 857 | else |
f0c55750 KH |
858 | font->space_width = 0; |
859 | ||
860 | val = Ffont_get (font_object, QCavgwidth); | |
861 | if (INTEGERP (val)) | |
862 | font->average_width = XINT (val); | |
863 | if (font->average_width < 0) | |
864 | font->average_width = - font->average_width; | |
865 | if (font->average_width == 0 | |
866 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 867 | { |
f0c55750 | 868 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 869 | |
f0c55750 KH |
870 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
871 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
872 | width += pcm->width, n++; | |
4f64a164 KH |
873 | if (n > 0) |
874 | font->average_width = width / n; | |
c2f5bfd6 | 875 | } |
4f64a164 KH |
876 | if (font->average_width == 0) |
877 | /* No easy way other than this to get a reasonable | |
878 | average_width. */ | |
879 | font->average_width | |
880 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 881 | } |
c2f5bfd6 | 882 | |
f0c55750 KH |
883 | BLOCK_INPUT; |
884 | font->underline_thickness | |
885 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
886 | ? (long) value : 0); | |
887 | font->underline_position | |
888 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
889 | ? (long) value : -1); | |
890 | font->baseline_offset | |
c2f5bfd6 KH |
891 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
892 | ? (long) value : 0); | |
f0c55750 | 893 | font->relative_compose |
c2f5bfd6 KH |
894 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
895 | ? (long) value : 0); | |
f0c55750 | 896 | font->default_ascent |
c2f5bfd6 KH |
897 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
898 | ? (long) value : 0); | |
c2f5bfd6 KH |
899 | UNBLOCK_INPUT; |
900 | ||
f0c55750 KH |
901 | if (NILP (fullname)) |
902 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
903 | font->vertical_centering |
904 | = (STRINGP (Vvertical_centering_font_regexp) | |
905 | && (fast_string_match_ignore_case | |
906 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 907 | |
f0c55750 | 908 | return font_object; |
c2f5bfd6 KH |
909 | } |
910 | ||
911 | static void | |
912 | xfont_close (f, font) | |
913 | FRAME_PTR f; | |
914 | struct font *font; | |
915 | { | |
916 | BLOCK_INPUT; | |
f0c55750 | 917 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 918 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
919 | } |
920 | ||
921 | static int | |
922 | xfont_prepare_face (f, face) | |
923 | FRAME_PTR f; | |
924 | struct face *face; | |
925 | { | |
926 | BLOCK_INPUT; | |
f0c55750 KH |
927 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
928 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
929 | UNBLOCK_INPUT; |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
c2f5bfd6 | 934 | static int |
bd0af90d KH |
935 | xfont_has_char (font, c) |
936 | Lisp_Object font; | |
c2f5bfd6 KH |
937 | int c; |
938 | { | |
bd0af90d | 939 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 940 | struct charset *encoding; |
bd0af90d | 941 | struct charset *repertory = NULL; |
c2f5bfd6 | 942 | |
bd0af90d KH |
943 | if (EQ (registry, Qiso10646_1)) |
944 | { | |
5a189ffa | 945 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
946 | /* We use a font of `ja' and `ko' adstyle only for a character |
947 | in JISX0208 and KSC5601 charsets respectively. */ | |
948 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
949 | && charset_jisx0208 >= 0) | |
5a189ffa | 950 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
951 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
952 | && charset_ksc5601 >= 0) | |
5a189ffa | 953 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
954 | } |
955 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
956 | /* Unknown REGISTRY, not usable. */ | |
957 | return 0; | |
d156542d KH |
958 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
959 | return 1; | |
c2f5bfd6 KH |
960 | if (! repertory) |
961 | return -1; | |
962 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
963 | } | |
964 | ||
965 | static unsigned | |
966 | xfont_encode_char (font, c) | |
967 | struct font *font; | |
968 | int c; | |
969 | { | |
f0c55750 | 970 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
971 | struct charset *charset; |
972 | unsigned code; | |
973 | XChar2b char2b; | |
974 | ||
975 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
976 | code = ENCODE_CHAR (charset, c); | |
977 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 978 | return FONT_INVALID_CODE; |
1886668d | 979 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 980 | { |
1886668d | 981 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 982 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 983 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 984 | } |
88649c62 KH |
985 | char2b.byte1 = code >> 8; |
986 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 987 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
988 | } |
989 | ||
990 | static int | |
991 | xfont_text_extents (font, code, nglyphs, metrics) | |
992 | struct font *font; | |
993 | unsigned *code; | |
994 | int nglyphs; | |
995 | struct font_metrics *metrics; | |
996 | { | |
f0c55750 | 997 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 998 | int width = 0; |
41fa3e2c | 999 | int i, first, x; |
c2f5bfd6 KH |
1000 | |
1001 | if (metrics) | |
1002 | bzero (metrics, sizeof (struct font_metrics)); | |
41fa3e2c | 1003 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
1004 | { |
1005 | XChar2b char2b; | |
1006 | static XCharStruct *pcm; | |
1007 | ||
1008 | if (code[i] >= 0x10000) | |
1009 | continue; | |
1010 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 1011 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
1012 | if (! pcm) |
1013 | continue; | |
41fa3e2c KH |
1014 | if (first) |
1015 | { | |
1016 | if (metrics) | |
1017 | { | |
1018 | metrics->lbearing = pcm->lbearing; | |
1019 | metrics->rbearing = pcm->rbearing; | |
1020 | metrics->ascent = pcm->ascent; | |
1021 | metrics->descent = pcm->descent; | |
1022 | } | |
1023 | first = 0; | |
1024 | } | |
1025 | else | |
1026 | { | |
1027 | if (metrics) | |
1028 | { | |
1029 | if (metrics->lbearing > width + pcm->lbearing) | |
1030 | metrics->lbearing = width + pcm->lbearing; | |
1031 | if (metrics->rbearing < width + pcm->rbearing) | |
1032 | metrics->rbearing = width + pcm->rbearing; | |
1033 | if (metrics->ascent < pcm->ascent) | |
1034 | metrics->ascent = pcm->ascent; | |
1035 | if (metrics->descent < pcm->descent) | |
1036 | metrics->descent = pcm->descent; | |
1037 | } | |
1038 | } | |
c2f5bfd6 KH |
1039 | width += pcm->width; |
1040 | } | |
1041 | if (metrics) | |
1042 | metrics->width = width; | |
1043 | return width; | |
1044 | } | |
1045 | ||
1046 | static int | |
1047 | xfont_draw (s, from, to, x, y, with_background) | |
1048 | struct glyph_string *s; | |
1049 | int from, to, x, y, with_background; | |
1050 | { | |
f0c55750 | 1051 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1052 | int len = to - from; |
6e34c9c1 | 1053 | GC gc = s->gc; |
298fd5b1 | 1054 | int i; |
6e34c9c1 | 1055 | |
f0c55750 | 1056 | if (s->gc != s->face->gc) |
6e34c9c1 | 1057 | { |
d45fefc7 | 1058 | BLOCK_INPUT; |
f0c55750 | 1059 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1060 | UNBLOCK_INPUT; |
6e34c9c1 | 1061 | } |
c2f5bfd6 KH |
1062 | |
1063 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1064 | { | |
1065 | char *str; | |
c2f5bfd6 KH |
1066 | USE_SAFE_ALLOCA; |
1067 | ||
1068 | SAFE_ALLOCA (str, char *, len); | |
1069 | for (i = 0; i < len ; i++) | |
1070 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1071 | BLOCK_INPUT; |
c2f5bfd6 | 1072 | if (with_background > 0) |
298fd5b1 KH |
1073 | { |
1074 | if (s->padding_p) | |
1075 | for (i = 0; i < len; i++) | |
1076 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1077 | gc, x + i, y, str + i, 1); | |
1078 | else | |
1079 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1080 | gc, x, y, str, len); | |
1081 | } | |
c2f5bfd6 | 1082 | else |
298fd5b1 KH |
1083 | { |
1084 | if (s->padding_p) | |
1085 | for (i = 0; i < len; i++) | |
1086 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1087 | gc, x + i, y, str + i, 1); | |
1088 | else | |
1089 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1090 | gc, x, y, str, len); | |
1091 | } | |
d45fefc7 | 1092 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1093 | SAFE_FREE (); |
1094 | return s->nchars; | |
1095 | } | |
1096 | ||
d45fefc7 | 1097 | BLOCK_INPUT; |
c2f5bfd6 | 1098 | if (with_background > 0) |
298fd5b1 KH |
1099 | { |
1100 | if (s->padding_p) | |
1101 | for (i = 0; i < len; i++) | |
1102 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1103 | gc, x + i, y, s->char2b + from + i, 1); | |
1104 | else | |
1105 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1106 | gc, x, y, s->char2b + from, len); | |
1107 | } | |
c2f5bfd6 | 1108 | else |
298fd5b1 KH |
1109 | { |
1110 | if (s->padding_p) | |
1111 | for (i = 0; i < len; i++) | |
1112 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1113 | gc, x + i, y, s->char2b + from + i, 1); | |
1114 | else | |
1115 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1116 | gc, x, y, s->char2b + from, len); | |
1117 | } | |
d45fefc7 | 1118 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1119 | |
1120 | return len; | |
1121 | } | |
1122 | ||
f0c55750 KH |
1123 | static int |
1124 | xfont_check (f, font) | |
1125 | FRAME_PTR f; | |
1126 | struct font *font; | |
1127 | { | |
1128 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1129 | ||
1130 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1131 | } | |
1132 | ||
c2f5bfd6 KH |
1133 | \f |
1134 | void | |
1135 | syms_of_xfont () | |
1136 | { | |
5a189ffa | 1137 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1138 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1139 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1140 | Lisp_Object args[2]; | |
1141 | args[0] = QCtest; | |
1142 | args[1] = Qequal; | |
1143 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1144 | } | |
5a189ffa | 1145 | staticpro (&xfont_scratch_props); |
46306a17 | 1146 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1147 | xfont_driver.type = Qx; |
1148 | register_font_driver (&xfont_driver, NULL); | |
1149 | } | |
885b7d09 MB |
1150 | |
1151 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
1152 | (do not change this comment) */ |