Commit | Line | Data |
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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
5df4f04c GM |
2 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
3 | Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 | |
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> | |
d7306fe6 | 24 | #include <setjmp.h> |
c2f5bfd6 KH |
25 | #include <X11/Xlib.h> |
26 | ||
27 | #include "lisp.h" | |
28 | #include "dispextern.h" | |
29 | #include "xterm.h" | |
30 | #include "frame.h" | |
31 | #include "blockinput.h" | |
32 | #include "character.h" | |
33 | #include "charset.h" | |
34 | #include "fontset.h" | |
35 | #include "font.h" | |
f0c55750 | 36 | #include "ccl.h" |
c2f5bfd6 KH |
37 | |
38 | \f | |
39 | /* X core font driver. */ | |
40 | ||
f0c55750 KH |
41 | struct xfont_info |
42 | { | |
43 | struct font font; | |
44 | Display *display; | |
45 | XFontStruct *xfont; | |
46 | }; | |
47 | ||
c2f5bfd6 | 48 | /* Prototypes of support functions. */ |
f57e2426 | 49 | extern void x_clear_errors (Display *); |
c2f5bfd6 | 50 | |
f57e2426 | 51 | static XCharStruct *xfont_get_pcm (XFontStruct *, XChar2b *); |
c2f5bfd6 KH |
52 | |
53 | /* Get metrics of character CHAR2B in XFONT. Value is null if CHAR2B | |
54 | is not contained in the font. */ | |
55 | ||
56 | static XCharStruct * | |
971de7fb | 57 | xfont_get_pcm (XFontStruct *xfont, XChar2b *char2b) |
c2f5bfd6 KH |
58 | { |
59 | /* The result metric information. */ | |
60 | XCharStruct *pcm = NULL; | |
61 | ||
960d80b9 | 62 | font_assert (xfont && char2b); |
c2f5bfd6 KH |
63 | |
64 | if (xfont->per_char != NULL) | |
65 | { | |
66 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
67 | { | |
68 | /* min_char_or_byte2 specifies the linear character index | |
69 | corresponding to the first element of the per_char array, | |
70 | max_char_or_byte2 is the index of the last character. A | |
71 | character with non-zero CHAR2B->byte1 is not in the font. | |
72 | A character with byte2 less than min_char_or_byte2 or | |
73 | greater max_char_or_byte2 is not in the font. */ | |
74 | if (char2b->byte1 == 0 | |
75 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
76 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
77 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; | |
78 | } | |
79 | else | |
80 | { | |
81 | /* If either min_byte1 or max_byte1 are nonzero, both | |
82 | min_char_or_byte2 and max_char_or_byte2 are less than | |
83 | 256, and the 2-byte character index values corresponding | |
84 | to the per_char array element N (counting from 0) are: | |
85 | ||
86 | byte1 = N/D + min_byte1 | |
87 | byte2 = N\D + min_char_or_byte2 | |
88 | ||
89 | where: | |
90 | ||
91 | D = max_char_or_byte2 - min_char_or_byte2 + 1 | |
92 | / = integer division | |
93 | \ = integer modulus */ | |
94 | if (char2b->byte1 >= xfont->min_byte1 | |
95 | && char2b->byte1 <= xfont->max_byte1 | |
96 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
97 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
98 | pcm = (xfont->per_char | |
99 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) | |
100 | * (char2b->byte1 - xfont->min_byte1)) | |
101 | + (char2b->byte2 - xfont->min_char_or_byte2)); | |
102 | } | |
103 | } | |
104 | else | |
105 | { | |
106 | /* If the per_char pointer is null, all glyphs between the first | |
107 | and last character indexes inclusive have the same | |
108 | information, as given by both min_bounds and max_bounds. */ | |
109 | if (char2b->byte2 >= xfont->min_char_or_byte2 | |
110 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
111 | pcm = &xfont->max_bounds; | |
112 | } | |
113 | ||
114 | return ((pcm == NULL | |
115 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) | |
116 | ? NULL : pcm); | |
117 | } | |
118 | ||
f57e2426 J |
119 | static Lisp_Object xfont_get_cache (FRAME_PTR); |
120 | static Lisp_Object xfont_list (Lisp_Object, Lisp_Object); | |
121 | static Lisp_Object xfont_match (Lisp_Object, Lisp_Object); | |
122 | static Lisp_Object xfont_list_family (Lisp_Object); | |
123 | static Lisp_Object xfont_open (FRAME_PTR, Lisp_Object, int); | |
124 | static void xfont_close (FRAME_PTR, struct font *); | |
125 | static int xfont_prepare_face (FRAME_PTR, struct face *); | |
126 | static int xfont_has_char (Lisp_Object, int); | |
127 | static unsigned xfont_encode_char (struct font *, int); | |
128 | static int xfont_text_extents (struct font *, unsigned *, int, | |
129 | struct font_metrics *); | |
130 | static int xfont_draw (struct glyph_string *, int, int, int, int, int); | |
131 | static int xfont_check (FRAME_PTR, struct font *); | |
c2f5bfd6 KH |
132 | |
133 | struct font_driver xfont_driver = | |
134 | { | |
575abfb7 | 135 | 0, /* Qx */ |
f0c55750 | 136 | 0, /* case insensitive */ |
c2f5bfd6 | 137 | xfont_get_cache, |
c2f5bfd6 | 138 | xfont_list, |
6e34c9c1 | 139 | xfont_match, |
c2f5bfd6 KH |
140 | xfont_list_family, |
141 | NULL, | |
142 | xfont_open, | |
143 | xfont_close, | |
144 | xfont_prepare_face, | |
f0c55750 | 145 | NULL, |
c2f5bfd6 KH |
146 | xfont_has_char, |
147 | xfont_encode_char, | |
148 | xfont_text_extents, | |
f0c55750 KH |
149 | xfont_draw, |
150 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
637fa988 JD |
151 | xfont_check, |
152 | NULL, /* get_variation_glyphs */ | |
153 | NULL, /* filter_properties */ | |
c2f5bfd6 KH |
154 | }; |
155 | ||
c2f5bfd6 | 156 | static Lisp_Object |
971de7fb | 157 | xfont_get_cache (FRAME_PTR f) |
c2f5bfd6 | 158 | { |
feb2737b | 159 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
160 | |
161 | return (dpyinfo->name_list_element); | |
162 | } | |
163 | ||
f0c55750 KH |
164 | static int |
165 | compare_font_names (const void *name1, const void *name2) | |
166 | { | |
7740d2c7 KH |
167 | return xstrcasecmp (*(const unsigned char **) name1, |
168 | *(const unsigned char **) name2); | |
f0c55750 KH |
169 | } |
170 | ||
6a705b23 KH |
171 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
172 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
173 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
174 | least twice (plus 1) as large as XLFD. */ | |
175 | ||
176 | static int | |
177 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
178 | { | |
179 | char *p0 = xlfd, *p1 = output; | |
180 | int c; | |
8510724d | 181 | |
6a705b23 KH |
182 | while (*p0) |
183 | { | |
184 | c = *(unsigned char *) p0++; | |
185 | p1 += CHAR_STRING (c, p1); | |
186 | if (--len == 0) | |
187 | break; | |
188 | } | |
189 | *p1 = 0; | |
190 | return (p1 - output); | |
191 | } | |
192 | ||
193 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
194 | resulting byte length. If XLFD contains unencodable character, | |
195 | return -1. */ | |
196 | ||
197 | static int | |
198 | xfont_encode_coding_xlfd (char *xlfd) | |
199 | { | |
200 | const unsigned char *p0 = (unsigned char *) xlfd; | |
201 | unsigned char *p1 = (unsigned char *) xlfd; | |
202 | int len = 0; | |
8510724d | 203 | |
6a705b23 KH |
204 | while (*p0) |
205 | { | |
206 | int c = STRING_CHAR_ADVANCE (p0); | |
207 | ||
208 | if (c >= 0x100) | |
209 | return -1; | |
210 | *p1++ = c; | |
211 | len++; | |
212 | } | |
213 | *p1 = 0; | |
214 | return len; | |
215 | } | |
216 | ||
5a189ffa KH |
217 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
218 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
219 | registry corresponds to ENCODING and REPERTORY. | |
220 | Return 1 if supported, return 0 otherwise. */ | |
221 | ||
222 | static int | |
223 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
224 | struct charset *encoding, struct charset *repertory) | |
225 | { | |
226 | struct charset *charset = repertory ? repertory : encoding; | |
227 | ||
228 | if (CONSP (chars)) | |
229 | { | |
230 | for (; CONSP (chars); chars = XCDR (chars)) | |
231 | { | |
232 | int c = XINT (XCAR (chars)); | |
233 | unsigned code = ENCODE_CHAR (charset, c); | |
234 | XChar2b char2b; | |
235 | ||
236 | if (code == CHARSET_INVALID_CODE (charset)) | |
237 | break; | |
238 | if (! xfont) | |
239 | continue; | |
240 | if (code >= 0x10000) | |
241 | break; | |
242 | char2b.byte1 = code >> 8; | |
243 | char2b.byte2 = code & 0xFF; | |
244 | if (! xfont_get_pcm (xfont, &char2b)) | |
245 | break; | |
246 | } | |
247 | return (NILP (chars)); | |
248 | } | |
249 | else if (VECTORP (chars)) | |
250 | { | |
251 | int i; | |
252 | ||
253 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
254 | { | |
255 | int c = XINT (AREF (chars, i)); | |
256 | unsigned code = ENCODE_CHAR (charset, c); | |
257 | XChar2b char2b; | |
258 | ||
259 | if (code == CHARSET_INVALID_CODE (charset)) | |
260 | continue; | |
261 | if (! xfont) | |
262 | break; | |
263 | if (code >= 0x10000) | |
264 | continue; | |
265 | char2b.byte1 = code >> 8; | |
266 | char2b.byte2 = code & 0xFF; | |
267 | if (xfont_get_pcm (xfont, &char2b)) | |
268 | break; | |
269 | } | |
270 | return (i >= 0); | |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | /* A hash table recoding which font supports which scritps. Each key | |
276 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
277 | ADDSTYLE, and each value is a list of script symbols. | |
278 | ||
279 | We assume that fonts that have the same value in the above | |
280 | properties supports the same set of characters on all displays. */ | |
281 | ||
282 | static Lisp_Object xfont_scripts_cache; | |
283 | ||
284 | /* Re-usable vector to store characteristic font properites. */ | |
285 | static Lisp_Object xfont_scratch_props; | |
286 | ||
5a189ffa KH |
287 | /* Return a list of scripts supported by the font of FONTNAME whose |
288 | characteristic properties are in PROPS and whose encoding charset | |
289 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
290 | |
291 | static Lisp_Object | |
5a189ffa KH |
292 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
293 | struct charset *encoding) | |
294 | { | |
295 | Lisp_Object scripts; | |
296 | ||
297 | /* Two special cases to avoid opening rather big fonts. */ | |
298 | if (EQ (AREF (props, 2), Qja)) | |
299 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
300 | if (EQ (AREF (props, 2), Qko)) | |
301 | return Fcons (intern ("hangul"), Qnil); | |
302 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
303 | if (EQ (scripts, Qt)) | |
304 | { | |
305 | XFontStruct *xfont; | |
306 | Lisp_Object val; | |
307 | ||
308 | scripts = Qnil; | |
309 | xfont = XLoadQueryFont (display, fontname); | |
310 | if (xfont) | |
311 | { | |
312 | if (xfont->per_char) | |
313 | { | |
314 | for (val = Vscript_representative_chars; CONSP (val); | |
315 | val = XCDR (val)) | |
316 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
317 | { | |
318 | Lisp_Object script = XCAR (XCAR (val)); | |
319 | Lisp_Object chars = XCDR (XCAR (val)); | |
320 | ||
321 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
322 | scripts = Fcons (script, scripts); | |
323 | } | |
324 | } | |
325 | XFreeFont (display, xfont); | |
326 | } | |
327 | if (EQ (AREF (props, 3), Qiso10646_1) | |
328 | && NILP (Fmemq (Qlatin, scripts))) | |
329 | scripts = Fcons (Qlatin, scripts); | |
330 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
331 | } | |
332 | return scripts; | |
333 | } | |
334 | ||
5a189ffa | 335 | static Lisp_Object |
675e2c69 | 336 | xfont_list_pattern (Display *display, const char *pattern, |
5a189ffa | 337 | Lisp_Object registry, Lisp_Object script) |
c2f5bfd6 | 338 | { |
6c4aeab6 | 339 | Lisp_Object list = Qnil; |
5a189ffa KH |
340 | Lisp_Object chars = Qnil; |
341 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
342 | int i, limit, num_fonts; |
343 | char **names; | |
6a705b23 KH |
344 | /* Large enough to decode the longest XLFD (255 bytes). */ |
345 | char buf[512]; | |
c2f5bfd6 | 346 | |
5a189ffa KH |
347 | if (! NILP (registry) |
348 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
349 | /* Unknown REGISTRY, not supported. */ | |
350 | return Qnil; | |
351 | if (! NILP (script)) | |
352 | { | |
353 | chars = assq_no_quit (script, Vscript_representative_chars); | |
354 | if (NILP (chars)) | |
355 | /* We can't tell whether or not a font supports SCRIPT. */ | |
356 | return Qnil; | |
357 | chars = XCDR (chars); | |
358 | if (repertory) | |
359 | { | |
360 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
361 | return Qnil; | |
362 | script = Qnil; | |
363 | } | |
364 | } | |
5a189ffa | 365 | |
c2f5bfd6 | 366 | BLOCK_INPUT; |
6c4aeab6 | 367 | x_catch_errors (display); |
c2f5bfd6 | 368 | |
6c4aeab6 | 369 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 370 | { |
6c4aeab6 KH |
371 | names = XListFonts (display, pattern, limit, &num_fonts); |
372 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
373 | { |
374 | /* This error is perhaps due to insufficient memory on X | |
375 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
376 | x_clear_errors (display); |
377 | num_fonts = 0; | |
378 | break; | |
c2f5bfd6 | 379 | } |
6c4aeab6 KH |
380 | if (num_fonts < limit) |
381 | break; | |
382 | XFreeFontNames (names); | |
383 | } | |
384 | ||
f0c55750 | 385 | if (num_fonts > 0) |
6c4aeab6 | 386 | { |
f0c55750 | 387 | char **indices = alloca (sizeof (char *) * num_fonts); |
46306a17 | 388 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 389 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 390 | |
46306a17 SM |
391 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
392 | props[i] = Qnil; | |
f0c55750 KH |
393 | for (i = 0; i < num_fonts; i++) |
394 | indices[i] = names[i]; | |
395 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 396 | |
f0c55750 | 397 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 398 | { |
f0c55750 | 399 | Lisp_Object entity; |
6c4aeab6 | 400 | |
05131107 | 401 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 402 | continue; |
f0c55750 | 403 | entity = font_make_entity (); |
6a705b23 | 404 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
4fa58085 KH |
405 | if (font_parse_xlfd (buf, entity) < 0) |
406 | continue; | |
5a189ffa KH |
407 | ASET (entity, FONT_TYPE_INDEX, Qx); |
408 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
409 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
410 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
411 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
412 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
413 | continue; | |
414 | /* Avoid not-allowed scalable fonts. */ | |
415 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 416 | { |
4fa58085 KH |
417 | int size = 0; |
418 | ||
419 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
420 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
421 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
422 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
423 | if (size == 0) | |
6c4aeab6 | 424 | continue; |
5a189ffa KH |
425 | } |
426 | else if (CONSP (Vscalable_fonts_allowed)) | |
427 | { | |
428 | Lisp_Object tail, elt; | |
429 | ||
430 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
431 | tail = XCDR (tail)) | |
f0c55750 | 432 | { |
5a189ffa KH |
433 | elt = XCAR (tail); |
434 | if (STRINGP (elt) | |
435 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
436 | break; | |
f0c55750 | 437 | } |
5a189ffa KH |
438 | if (! CONSP (tail)) |
439 | continue; | |
c2f5bfd6 | 440 | } |
f0c55750 | 441 | |
4fa58085 KH |
442 | /* Avoid fonts of invalid registry. */ |
443 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
444 | continue; | |
445 | ||
5a189ffa KH |
446 | /* Update encoding and repertory if necessary. */ |
447 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
448 | { | |
449 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
450 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
451 | encoding = NULL; | |
452 | } | |
453 | if (! encoding) | |
454 | /* Unknown REGISTRY, not supported. */ | |
455 | continue; | |
456 | if (repertory) | |
457 | { | |
458 | if (NILP (script) | |
459 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
460 | list = Fcons (entity, list); | |
461 | continue; | |
462 | } | |
463 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
464 | sizeof (Lisp_Object) * 7) | |
465 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
466 | { | |
467 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
468 | sizeof (Lisp_Object) * 7); | |
469 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
470 | scripts = xfont_supported_scripts (display, indices[i], | |
471 | xfont_scratch_props, encoding); | |
472 | } | |
473 | if (NILP (script) | |
474 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 475 | list = Fcons (entity, list); |
c2f5bfd6 | 476 | } |
019e13ef | 477 | XFreeFontNames (names); |
c2f5bfd6 KH |
478 | } |
479 | ||
480 | x_uncatch_errors (); | |
481 | UNBLOCK_INPUT; | |
482 | ||
678dca3d | 483 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
484 | return list; |
485 | } | |
c2f5bfd6 | 486 | |
6c4aeab6 | 487 | static Lisp_Object |
971de7fb | 488 | xfont_list (Lisp_Object frame, Lisp_Object spec) |
6c4aeab6 KH |
489 | { |
490 | FRAME_PTR f = XFRAME (frame); | |
491 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 492 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 493 | int len; |
6a705b23 KH |
494 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
495 | char name[512]; | |
8510724d | 496 | |
6c4aeab6 | 497 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 498 | if (CONSP (extra)) |
c2f5bfd6 | 499 | { |
6c4aeab6 | 500 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 501 | if (! NILP (val)) |
f0c55750 KH |
502 | return Qnil; |
503 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 504 | if (! NILP (val)) |
f0c55750 | 505 | return Qnil; |
c2f5bfd6 | 506 | } |
398dbf26 | 507 | |
f0c55750 | 508 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
509 | len = font_unparse_xlfd (spec, 0, name, 512); |
510 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 511 | return Qnil; |
5a189ffa KH |
512 | |
513 | val = assq_no_quit (QCscript, extra); | |
514 | script = CDR (val); | |
515 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 516 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 517 | { |
f0c55750 KH |
518 | /* Try iso10646-1 */ |
519 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
520 | ||
521 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 522 | { |
f0c55750 | 523 | strcpy (r, "iso10646-1"); |
5a189ffa | 524 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
525 | } |
526 | } | |
527 | if (NILP (list) && ! NILP (registry)) | |
528 | { | |
37470f4d | 529 | /* Try alternate registries. */ |
f0c55750 | 530 | Lisp_Object alter; |
6c4aeab6 | 531 | |
f0c55750 KH |
532 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
533 | Vface_alternative_font_registry_alist), | |
534 | CONSP (alter))) | |
535 | { | |
536 | /* Pointer to REGISTRY-ENCODING field. */ | |
537 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
538 | ||
539 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
540 | if (STRINGP (XCAR (alter)) | |
541 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
542 | { | |
543 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 544 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
545 | if (! NILP (list)) |
546 | break; | |
547 | } | |
6c4aeab6 | 548 | } |
c2f5bfd6 | 549 | } |
37470f4d KH |
550 | if (NILP (list)) |
551 | { | |
552 | /* Try alias. */ | |
553 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
554 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
555 | { | |
72af86bd | 556 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
6a705b23 KH |
557 | if (xfont_encode_coding_xlfd (name) < 0) |
558 | return Qnil; | |
5a189ffa | 559 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 560 | } |
37470f4d | 561 | } |
398dbf26 | 562 | |
f0c55750 | 563 | return list; |
c2f5bfd6 KH |
564 | } |
565 | ||
6e34c9c1 | 566 | static Lisp_Object |
971de7fb | 567 | xfont_match (Lisp_Object frame, Lisp_Object spec) |
6e34c9c1 KH |
568 | { |
569 | FRAME_PTR f = XFRAME (frame); | |
570 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
571 | Lisp_Object extra, val, entity; | |
6a705b23 | 572 | char name[512]; |
6e34c9c1 KH |
573 | XFontStruct *xfont; |
574 | unsigned long value; | |
575 | ||
576 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
577 | val = assq_no_quit (QCname, extra); | |
578 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 579 | { |
6a705b23 | 580 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 581 | return Qnil; |
f0c55750 | 582 | } |
6a705b23 | 583 | else if (SBYTES (XCDR (val)) < 512) |
72af86bd | 584 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
f0c55750 | 585 | else |
6a705b23 KH |
586 | return Qnil; |
587 | if (xfont_encode_coding_xlfd (name) < 0) | |
588 | return Qnil; | |
6e34c9c1 | 589 | |
9c6d1df5 | 590 | BLOCK_INPUT; |
6e34c9c1 | 591 | entity = Qnil; |
6e34c9c1 KH |
592 | xfont = XLoadQueryFont (display, name); |
593 | if (xfont) | |
594 | { | |
595 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
596 | { | |
597 | int len; | |
6a705b23 | 598 | char *s; |
6e34c9c1 | 599 | |
6a705b23 KH |
600 | s = (char *) XGetAtomName (display, (Atom) value); |
601 | len = strlen (s); | |
6e34c9c1 KH |
602 | |
603 | /* If DXPC (a Differential X Protocol Compressor) | |
604 | Ver.3.7 is running, XGetAtomName will return null | |
605 | string. We must avoid such a name. */ | |
606 | if (len > 0) | |
607 | { | |
f0c55750 | 608 | entity = font_make_entity (); |
6e34c9c1 | 609 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 610 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
611 | if (font_parse_xlfd (name, entity) < 0) |
612 | entity = Qnil; | |
613 | } | |
6a705b23 | 614 | XFree (s); |
6e34c9c1 KH |
615 | } |
616 | XFreeFont (display, xfont); | |
617 | } | |
9c6d1df5 | 618 | UNBLOCK_INPUT; |
6e34c9c1 | 619 | |
678dca3d | 620 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
621 | return entity; |
622 | } | |
623 | ||
c2f5bfd6 | 624 | static Lisp_Object |
971de7fb | 625 | xfont_list_family (Lisp_Object frame) |
c2f5bfd6 KH |
626 | { |
627 | FRAME_PTR f = XFRAME (frame); | |
628 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
629 | char **names; | |
630 | int num_fonts, i; | |
631 | Lisp_Object list; | |
632 | char *last_family; | |
633 | int last_len; | |
634 | ||
635 | BLOCK_INPUT; | |
636 | x_catch_errors (dpyinfo->display); | |
637 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
638 | 0x8000, &num_fonts); | |
639 | if (x_had_errors_p (dpyinfo->display)) | |
640 | { | |
641 | /* This error is perhaps due to insufficient memory on X server. | |
642 | Let's just ignore it. */ | |
643 | x_clear_errors (dpyinfo->display); | |
644 | num_fonts = 0; | |
645 | } | |
646 | ||
647 | list = Qnil; | |
648 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
649 | { | |
6a705b23 | 650 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 651 | Lisp_Object family; |
6a705b23 | 652 | int decoded_len; |
c2f5bfd6 KH |
653 | |
654 | p0++; /* skip the leading '-' */ | |
655 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
656 | if (! *p0) | |
657 | continue; | |
658 | p1 = ++p0; | |
659 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
660 | if (! *p1 || p1 == p0) | |
661 | continue; | |
662 | if (last_len == p1 - p0 | |
72af86bd | 663 | && memcmp (last_family, p0, last_len) == 0) |
c2f5bfd6 KH |
664 | continue; |
665 | last_len = p1 - p0; | |
666 | last_family = p0; | |
6a705b23 KH |
667 | |
668 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
669 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 670 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
671 | list = Fcons (family, list); |
672 | } | |
673 | ||
674 | XFreeFontNames (names); | |
675 | x_uncatch_errors (); | |
676 | UNBLOCK_INPUT; | |
677 | ||
678 | return list; | |
679 | } | |
680 | ||
f0c55750 | 681 | static Lisp_Object |
971de7fb | 682 | xfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 KH |
683 | { |
684 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
685 | Display *display = dpyinfo->display; | |
6a705b23 | 686 | char name[512]; |
c2f5bfd6 KH |
687 | int len; |
688 | unsigned long value; | |
689 | Lisp_Object registry; | |
690 | struct charset *encoding, *repertory; | |
f0c55750 | 691 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
692 | struct font *font; |
693 | XFontStruct *xfont; | |
694 | ||
695 | /* At first, check if we know how to encode characters for this | |
696 | font. */ | |
697 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 698 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 699 | { |
678dca3d | 700 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
701 | return Qnil; |
702 | } | |
c2f5bfd6 KH |
703 | |
704 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
705 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
706 | else if (pixel_size == 0) |
707 | { | |
708 | if (FRAME_FONT (f)) | |
709 | pixel_size = FRAME_FONT (f)->pixel_size; | |
710 | else | |
711 | pixel_size = 14; | |
712 | } | |
6a705b23 KH |
713 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
714 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 715 | { |
678dca3d | 716 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
717 | return Qnil; |
718 | } | |
c2f5bfd6 KH |
719 | |
720 | BLOCK_INPUT; | |
721 | x_catch_errors (display); | |
722 | xfont = XLoadQueryFont (display, name); | |
723 | if (x_had_errors_p (display)) | |
724 | { | |
725 | /* This error is perhaps due to insufficient memory on X server. | |
726 | Let's just ignore it. */ | |
727 | x_clear_errors (display); | |
728 | xfont = NULL; | |
729 | } | |
2f73901f KH |
730 | else if (! xfont) |
731 | { | |
732 | /* Some version of X lists: | |
733 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
734 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
735 | but can open only: | |
736 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
737 | and | |
738 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
739 | So, we try again with wildcards in RESX and RESY. */ | |
740 | Lisp_Object temp; | |
741 | ||
742 | temp = Fcopy_font_spec (entity); | |
743 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
744 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
745 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 746 | { |
678dca3d | 747 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
748 | return Qnil; |
749 | } | |
750 | xfont = XLoadQueryFont (display, name); | |
751 | if (x_had_errors_p (display)) | |
752 | { | |
753 | /* This error is perhaps due to insufficient memory on X server. | |
754 | Let's just ignore it. */ | |
755 | x_clear_errors (display); | |
756 | xfont = NULL; | |
757 | } | |
758 | } | |
f0c55750 KH |
759 | fullname = Qnil; |
760 | /* Try to get the full name of FONT. */ | |
761 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
762 | { | |
763 | char *p0, *p; | |
764 | int dashes = 0; | |
765 | ||
8510724d | 766 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
767 | /* Count the number of dashes in the "full name". |
768 | If it is too few, this isn't really the font's full name, | |
769 | so don't use it. | |
770 | In X11R4, the fonts did not come with their canonical names | |
771 | stored in them. */ | |
772 | while (*p) | |
773 | { | |
774 | if (*p == '-') | |
775 | dashes++; | |
776 | p++; | |
777 | } | |
778 | ||
779 | if (dashes >= 13) | |
6a705b23 KH |
780 | { |
781 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
782 | fullname = Fdowncase (make_string (name, len)); | |
783 | } | |
f0c55750 KH |
784 | XFree (p0); |
785 | } | |
c2f5bfd6 KH |
786 | x_uncatch_errors (); |
787 | UNBLOCK_INPUT; | |
788 | ||
789 | if (! xfont) | |
c8e0e16d | 790 | { |
678dca3d | 791 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
792 | return Qnil; |
793 | } | |
f0c55750 | 794 | |
947eecfb KH |
795 | font_object = font_make_object (VECSIZE (struct xfont_info), |
796 | entity, pixel_size); | |
f0c55750 KH |
797 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
798 | if (STRINGP (fullname)) | |
6a705b23 KH |
799 | { |
800 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
801 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
802 | } | |
f0c55750 | 803 | else |
6a705b23 KH |
804 | { |
805 | char buf[512]; | |
806 | ||
807 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
808 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
809 | } | |
f0c55750 KH |
810 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
811 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
812 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
813 | font = XFONT_OBJECT (font_object); | |
814 | ((struct xfont_info *) font)->xfont = xfont; | |
815 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
816 | font->pixel_size = pixel_size; |
817 | font->driver = &xfont_driver; | |
c2f5bfd6 | 818 | font->encoding_charset = encoding->id; |
1886668d | 819 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
820 | font->ascent = xfont->ascent; |
821 | font->descent = xfont->descent; | |
f0c55750 KH |
822 | font->height = font->ascent + font->descent; |
823 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
824 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
825 | { | |
826 | /* Fixed width font. */ | |
f0c55750 | 827 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
828 | } |
829 | else | |
830 | { | |
c2f5bfd6 | 831 | XCharStruct *pcm; |
f0c55750 KH |
832 | XChar2b char2b; |
833 | Lisp_Object val; | |
c2f5bfd6 KH |
834 | |
835 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
836 | pcm = xfont_get_pcm (xfont, &char2b); | |
837 | if (pcm) | |
f0c55750 | 838 | font->space_width = pcm->width; |
c2f5bfd6 | 839 | else |
f0c55750 KH |
840 | font->space_width = 0; |
841 | ||
842 | val = Ffont_get (font_object, QCavgwidth); | |
843 | if (INTEGERP (val)) | |
18acb5ad | 844 | font->average_width = XINT (val) / 10; |
f0c55750 KH |
845 | if (font->average_width < 0) |
846 | font->average_width = - font->average_width; | |
847 | if (font->average_width == 0 | |
848 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 849 | { |
f0c55750 | 850 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 851 | |
f0c55750 KH |
852 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
853 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
854 | width += pcm->width, n++; | |
4f64a164 KH |
855 | if (n > 0) |
856 | font->average_width = width / n; | |
c2f5bfd6 | 857 | } |
4f64a164 KH |
858 | if (font->average_width == 0) |
859 | /* No easy way other than this to get a reasonable | |
860 | average_width. */ | |
861 | font->average_width | |
862 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 863 | } |
c2f5bfd6 | 864 | |
f0c55750 KH |
865 | BLOCK_INPUT; |
866 | font->underline_thickness | |
867 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
868 | ? (long) value : 0); | |
869 | font->underline_position | |
870 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
871 | ? (long) value : -1); | |
872 | font->baseline_offset | |
c2f5bfd6 KH |
873 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
874 | ? (long) value : 0); | |
f0c55750 | 875 | font->relative_compose |
c2f5bfd6 KH |
876 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
877 | ? (long) value : 0); | |
f0c55750 | 878 | font->default_ascent |
c2f5bfd6 KH |
879 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
880 | ? (long) value : 0); | |
c2f5bfd6 KH |
881 | UNBLOCK_INPUT; |
882 | ||
f0c55750 KH |
883 | if (NILP (fullname)) |
884 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
885 | font->vertical_centering |
886 | = (STRINGP (Vvertical_centering_font_regexp) | |
887 | && (fast_string_match_ignore_case | |
888 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 889 | |
f0c55750 | 890 | return font_object; |
c2f5bfd6 KH |
891 | } |
892 | ||
893 | static void | |
971de7fb | 894 | xfont_close (FRAME_PTR f, struct font *font) |
c2f5bfd6 KH |
895 | { |
896 | BLOCK_INPUT; | |
f0c55750 | 897 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 898 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
899 | } |
900 | ||
901 | static int | |
971de7fb | 902 | xfont_prepare_face (FRAME_PTR f, struct face *face) |
c2f5bfd6 KH |
903 | { |
904 | BLOCK_INPUT; | |
f0c55750 KH |
905 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
906 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
907 | UNBLOCK_INPUT; |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
c2f5bfd6 | 912 | static int |
971de7fb | 913 | xfont_has_char (Lisp_Object font, int c) |
c2f5bfd6 | 914 | { |
bd0af90d | 915 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 916 | struct charset *encoding; |
bd0af90d | 917 | struct charset *repertory = NULL; |
c2f5bfd6 | 918 | |
bd0af90d KH |
919 | if (EQ (registry, Qiso10646_1)) |
920 | { | |
5a189ffa | 921 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
922 | /* We use a font of `ja' and `ko' adstyle only for a character |
923 | in JISX0208 and KSC5601 charsets respectively. */ | |
924 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
925 | && charset_jisx0208 >= 0) | |
5a189ffa | 926 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
927 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
928 | && charset_ksc5601 >= 0) | |
5a189ffa | 929 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
930 | } |
931 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
932 | /* Unknown REGISTRY, not usable. */ | |
933 | return 0; | |
d156542d KH |
934 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
935 | return 1; | |
c2f5bfd6 KH |
936 | if (! repertory) |
937 | return -1; | |
938 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
939 | } | |
940 | ||
941 | static unsigned | |
971de7fb | 942 | xfont_encode_char (struct font *font, int c) |
c2f5bfd6 | 943 | { |
f0c55750 | 944 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
945 | struct charset *charset; |
946 | unsigned code; | |
947 | XChar2b char2b; | |
948 | ||
949 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
950 | code = ENCODE_CHAR (charset, c); | |
951 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 952 | return FONT_INVALID_CODE; |
1886668d | 953 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 954 | { |
1886668d | 955 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 956 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 957 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 958 | } |
88649c62 KH |
959 | char2b.byte1 = code >> 8; |
960 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 961 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
962 | } |
963 | ||
964 | static int | |
971de7fb | 965 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 | 966 | { |
f0c55750 | 967 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 968 | int width = 0; |
41fa3e2c | 969 | int i, first, x; |
c2f5bfd6 KH |
970 | |
971 | if (metrics) | |
72af86bd | 972 | memset (metrics, 0, sizeof (struct font_metrics)); |
41fa3e2c | 973 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
974 | { |
975 | XChar2b char2b; | |
976 | static XCharStruct *pcm; | |
977 | ||
978 | if (code[i] >= 0x10000) | |
979 | continue; | |
980 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 981 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
982 | if (! pcm) |
983 | continue; | |
41fa3e2c KH |
984 | if (first) |
985 | { | |
986 | if (metrics) | |
987 | { | |
988 | metrics->lbearing = pcm->lbearing; | |
989 | metrics->rbearing = pcm->rbearing; | |
990 | metrics->ascent = pcm->ascent; | |
991 | metrics->descent = pcm->descent; | |
992 | } | |
993 | first = 0; | |
994 | } | |
995 | else | |
996 | { | |
997 | if (metrics) | |
998 | { | |
999 | if (metrics->lbearing > width + pcm->lbearing) | |
1000 | metrics->lbearing = width + pcm->lbearing; | |
1001 | if (metrics->rbearing < width + pcm->rbearing) | |
1002 | metrics->rbearing = width + pcm->rbearing; | |
1003 | if (metrics->ascent < pcm->ascent) | |
1004 | metrics->ascent = pcm->ascent; | |
1005 | if (metrics->descent < pcm->descent) | |
1006 | metrics->descent = pcm->descent; | |
1007 | } | |
1008 | } | |
c2f5bfd6 KH |
1009 | width += pcm->width; |
1010 | } | |
1011 | if (metrics) | |
1012 | metrics->width = width; | |
1013 | return width; | |
1014 | } | |
1015 | ||
1016 | static int | |
971de7fb | 1017 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, int with_background) |
c2f5bfd6 | 1018 | { |
f0c55750 | 1019 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1020 | int len = to - from; |
6e34c9c1 | 1021 | GC gc = s->gc; |
298fd5b1 | 1022 | int i; |
6e34c9c1 | 1023 | |
f0c55750 | 1024 | if (s->gc != s->face->gc) |
6e34c9c1 | 1025 | { |
d45fefc7 | 1026 | BLOCK_INPUT; |
f0c55750 | 1027 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1028 | UNBLOCK_INPUT; |
6e34c9c1 | 1029 | } |
c2f5bfd6 KH |
1030 | |
1031 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1032 | { | |
1033 | char *str; | |
c2f5bfd6 KH |
1034 | USE_SAFE_ALLOCA; |
1035 | ||
1036 | SAFE_ALLOCA (str, char *, len); | |
1037 | for (i = 0; i < len ; i++) | |
1038 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1039 | BLOCK_INPUT; |
c2f5bfd6 | 1040 | if (with_background > 0) |
298fd5b1 KH |
1041 | { |
1042 | if (s->padding_p) | |
1043 | for (i = 0; i < len; i++) | |
1044 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1045 | gc, x + i, y, str + i, 1); | |
1046 | else | |
1047 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1048 | gc, x, y, str, len); | |
1049 | } | |
c2f5bfd6 | 1050 | else |
298fd5b1 KH |
1051 | { |
1052 | if (s->padding_p) | |
1053 | for (i = 0; i < len; i++) | |
1054 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1055 | gc, x + i, y, str + i, 1); | |
1056 | else | |
1057 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1058 | gc, x, y, str, len); | |
1059 | } | |
d45fefc7 | 1060 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1061 | SAFE_FREE (); |
1062 | return s->nchars; | |
1063 | } | |
1064 | ||
d45fefc7 | 1065 | BLOCK_INPUT; |
c2f5bfd6 | 1066 | if (with_background > 0) |
298fd5b1 KH |
1067 | { |
1068 | if (s->padding_p) | |
1069 | for (i = 0; i < len; i++) | |
1070 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1071 | gc, x + i, y, s->char2b + from + i, 1); | |
1072 | else | |
1073 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1074 | gc, x, y, s->char2b + from, len); | |
1075 | } | |
c2f5bfd6 | 1076 | else |
298fd5b1 KH |
1077 | { |
1078 | if (s->padding_p) | |
1079 | for (i = 0; i < len; i++) | |
1080 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1081 | gc, x + i, y, s->char2b + from + i, 1); | |
1082 | else | |
1083 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1084 | gc, x, y, s->char2b + from, len); | |
1085 | } | |
d45fefc7 | 1086 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1087 | |
1088 | return len; | |
1089 | } | |
1090 | ||
f0c55750 | 1091 | static int |
971de7fb | 1092 | xfont_check (FRAME_PTR f, struct font *font) |
f0c55750 KH |
1093 | { |
1094 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1095 | ||
1096 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1097 | } | |
1098 | ||
c2f5bfd6 KH |
1099 | \f |
1100 | void | |
971de7fb | 1101 | syms_of_xfont (void) |
c2f5bfd6 | 1102 | { |
5a189ffa | 1103 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1104 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1105 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1106 | Lisp_Object args[2]; | |
1107 | args[0] = QCtest; | |
1108 | args[1] = Qequal; | |
1109 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1110 | } | |
5a189ffa | 1111 | staticpro (&xfont_scratch_props); |
46306a17 | 1112 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1113 | xfont_driver.type = Qx; |
1114 | register_font_driver (&xfont_driver, NULL); | |
1115 | } | |
885b7d09 | 1116 |