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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 | ||
c2f5bfd6 | 157 | static Lisp_Object |
971de7fb | 158 | xfont_get_cache (FRAME_PTR f) |
c2f5bfd6 | 159 | { |
feb2737b | 160 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
161 | |
162 | return (dpyinfo->name_list_element); | |
163 | } | |
164 | ||
f0c55750 KH |
165 | static int |
166 | compare_font_names (const void *name1, const void *name2) | |
167 | { | |
7740d2c7 KH |
168 | return xstrcasecmp (*(const unsigned char **) name1, |
169 | *(const unsigned char **) name2); | |
f0c55750 KH |
170 | } |
171 | ||
6a705b23 KH |
172 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
173 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
174 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
175 | least twice (plus 1) as large as XLFD. */ | |
176 | ||
177 | static int | |
178 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
179 | { | |
180 | char *p0 = xlfd, *p1 = output; | |
181 | int c; | |
8510724d | 182 | |
6a705b23 KH |
183 | while (*p0) |
184 | { | |
185 | c = *(unsigned char *) p0++; | |
186 | p1 += CHAR_STRING (c, p1); | |
187 | if (--len == 0) | |
188 | break; | |
189 | } | |
190 | *p1 = 0; | |
191 | return (p1 - output); | |
192 | } | |
193 | ||
194 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
195 | resulting byte length. If XLFD contains unencodable character, | |
196 | return -1. */ | |
197 | ||
198 | static int | |
199 | xfont_encode_coding_xlfd (char *xlfd) | |
200 | { | |
201 | const unsigned char *p0 = (unsigned char *) xlfd; | |
202 | unsigned char *p1 = (unsigned char *) xlfd; | |
203 | int len = 0; | |
8510724d | 204 | |
6a705b23 KH |
205 | while (*p0) |
206 | { | |
207 | int c = STRING_CHAR_ADVANCE (p0); | |
208 | ||
209 | if (c >= 0x100) | |
210 | return -1; | |
211 | *p1++ = c; | |
212 | len++; | |
213 | } | |
214 | *p1 = 0; | |
215 | return len; | |
216 | } | |
217 | ||
5a189ffa KH |
218 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
219 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
220 | registry corresponds to ENCODING and REPERTORY. | |
221 | Return 1 if supported, return 0 otherwise. */ | |
222 | ||
223 | static int | |
224 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
225 | struct charset *encoding, struct charset *repertory) | |
226 | { | |
227 | struct charset *charset = repertory ? repertory : encoding; | |
228 | ||
229 | if (CONSP (chars)) | |
230 | { | |
231 | for (; CONSP (chars); chars = XCDR (chars)) | |
232 | { | |
233 | int c = XINT (XCAR (chars)); | |
234 | unsigned code = ENCODE_CHAR (charset, c); | |
235 | XChar2b char2b; | |
236 | ||
237 | if (code == CHARSET_INVALID_CODE (charset)) | |
238 | break; | |
239 | if (! xfont) | |
240 | continue; | |
241 | if (code >= 0x10000) | |
242 | break; | |
243 | char2b.byte1 = code >> 8; | |
244 | char2b.byte2 = code & 0xFF; | |
245 | if (! xfont_get_pcm (xfont, &char2b)) | |
246 | break; | |
247 | } | |
248 | return (NILP (chars)); | |
249 | } | |
250 | else if (VECTORP (chars)) | |
251 | { | |
252 | int i; | |
253 | ||
254 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
255 | { | |
256 | int c = XINT (AREF (chars, i)); | |
257 | unsigned code = ENCODE_CHAR (charset, c); | |
258 | XChar2b char2b; | |
259 | ||
260 | if (code == CHARSET_INVALID_CODE (charset)) | |
261 | continue; | |
262 | if (! xfont) | |
263 | break; | |
264 | if (code >= 0x10000) | |
265 | continue; | |
266 | char2b.byte1 = code >> 8; | |
267 | char2b.byte2 = code & 0xFF; | |
268 | if (xfont_get_pcm (xfont, &char2b)) | |
269 | break; | |
270 | } | |
271 | return (i >= 0); | |
272 | } | |
273 | return 0; | |
274 | } | |
275 | ||
276 | /* A hash table recoding which font supports which scritps. Each key | |
277 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
278 | ADDSTYLE, and each value is a list of script symbols. | |
279 | ||
280 | We assume that fonts that have the same value in the above | |
281 | properties supports the same set of characters on all displays. */ | |
282 | ||
283 | static Lisp_Object xfont_scripts_cache; | |
284 | ||
285 | /* Re-usable vector to store characteristic font properites. */ | |
286 | static Lisp_Object xfont_scratch_props; | |
287 | ||
5a189ffa KH |
288 | /* Return a list of scripts supported by the font of FONTNAME whose |
289 | characteristic properties are in PROPS and whose encoding charset | |
290 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
291 | |
292 | static Lisp_Object | |
5a189ffa KH |
293 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
294 | struct charset *encoding) | |
295 | { | |
296 | Lisp_Object scripts; | |
297 | ||
298 | /* Two special cases to avoid opening rather big fonts. */ | |
299 | if (EQ (AREF (props, 2), Qja)) | |
300 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
301 | if (EQ (AREF (props, 2), Qko)) | |
302 | return Fcons (intern ("hangul"), Qnil); | |
303 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
304 | if (EQ (scripts, Qt)) | |
305 | { | |
306 | XFontStruct *xfont; | |
307 | Lisp_Object val; | |
308 | ||
309 | scripts = Qnil; | |
310 | xfont = XLoadQueryFont (display, fontname); | |
311 | if (xfont) | |
312 | { | |
313 | if (xfont->per_char) | |
314 | { | |
315 | for (val = Vscript_representative_chars; CONSP (val); | |
316 | val = XCDR (val)) | |
317 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
318 | { | |
319 | Lisp_Object script = XCAR (XCAR (val)); | |
320 | Lisp_Object chars = XCDR (XCAR (val)); | |
321 | ||
322 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
323 | scripts = Fcons (script, scripts); | |
324 | } | |
325 | } | |
326 | XFreeFont (display, xfont); | |
327 | } | |
328 | if (EQ (AREF (props, 3), Qiso10646_1) | |
329 | && NILP (Fmemq (Qlatin, scripts))) | |
330 | scripts = Fcons (Qlatin, scripts); | |
331 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
332 | } | |
333 | return scripts; | |
334 | } | |
335 | ||
5a189ffa | 336 | static Lisp_Object |
675e2c69 | 337 | xfont_list_pattern (Display *display, const char *pattern, |
5a189ffa | 338 | Lisp_Object registry, Lisp_Object script) |
c2f5bfd6 | 339 | { |
6c4aeab6 | 340 | Lisp_Object list = Qnil; |
5a189ffa KH |
341 | Lisp_Object chars = Qnil; |
342 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
343 | int i, limit, num_fonts; |
344 | char **names; | |
6a705b23 KH |
345 | /* Large enough to decode the longest XLFD (255 bytes). */ |
346 | char buf[512]; | |
c2f5bfd6 | 347 | |
5a189ffa KH |
348 | if (! NILP (registry) |
349 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
350 | /* Unknown REGISTRY, not supported. */ | |
351 | return Qnil; | |
352 | if (! NILP (script)) | |
353 | { | |
354 | chars = assq_no_quit (script, Vscript_representative_chars); | |
355 | if (NILP (chars)) | |
356 | /* We can't tell whether or not a font supports SCRIPT. */ | |
357 | return Qnil; | |
358 | chars = XCDR (chars); | |
359 | if (repertory) | |
360 | { | |
361 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
362 | return Qnil; | |
363 | script = Qnil; | |
364 | } | |
365 | } | |
5a189ffa | 366 | |
c2f5bfd6 | 367 | BLOCK_INPUT; |
6c4aeab6 | 368 | x_catch_errors (display); |
c2f5bfd6 | 369 | |
6c4aeab6 | 370 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 371 | { |
6c4aeab6 KH |
372 | names = XListFonts (display, pattern, limit, &num_fonts); |
373 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
374 | { |
375 | /* This error is perhaps due to insufficient memory on X | |
376 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
377 | x_clear_errors (display); |
378 | num_fonts = 0; | |
379 | break; | |
c2f5bfd6 | 380 | } |
6c4aeab6 KH |
381 | if (num_fonts < limit) |
382 | break; | |
383 | XFreeFontNames (names); | |
384 | } | |
385 | ||
f0c55750 | 386 | if (num_fonts > 0) |
6c4aeab6 | 387 | { |
f0c55750 | 388 | char **indices = alloca (sizeof (char *) * num_fonts); |
46306a17 | 389 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 390 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 391 | |
46306a17 SM |
392 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
393 | props[i] = Qnil; | |
f0c55750 KH |
394 | for (i = 0; i < num_fonts; i++) |
395 | indices[i] = names[i]; | |
396 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 397 | |
f0c55750 | 398 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 399 | { |
f0c55750 | 400 | Lisp_Object entity; |
6c4aeab6 | 401 | |
05131107 | 402 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 403 | continue; |
f0c55750 | 404 | entity = font_make_entity (); |
6a705b23 | 405 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
4fa58085 KH |
406 | if (font_parse_xlfd (buf, entity) < 0) |
407 | continue; | |
5a189ffa KH |
408 | ASET (entity, FONT_TYPE_INDEX, Qx); |
409 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
410 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
411 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
412 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
413 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
414 | continue; | |
415 | /* Avoid not-allowed scalable fonts. */ | |
416 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 417 | { |
4fa58085 KH |
418 | int size = 0; |
419 | ||
420 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
421 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
422 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
423 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
424 | if (size == 0) | |
6c4aeab6 | 425 | continue; |
5a189ffa KH |
426 | } |
427 | else if (CONSP (Vscalable_fonts_allowed)) | |
428 | { | |
429 | Lisp_Object tail, elt; | |
430 | ||
431 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
432 | tail = XCDR (tail)) | |
f0c55750 | 433 | { |
5a189ffa KH |
434 | elt = XCAR (tail); |
435 | if (STRINGP (elt) | |
436 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
437 | break; | |
f0c55750 | 438 | } |
5a189ffa KH |
439 | if (! CONSP (tail)) |
440 | continue; | |
c2f5bfd6 | 441 | } |
f0c55750 | 442 | |
4fa58085 KH |
443 | /* Avoid fonts of invalid registry. */ |
444 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
445 | continue; | |
446 | ||
5a189ffa KH |
447 | /* Update encoding and repertory if necessary. */ |
448 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
449 | { | |
450 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
451 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
452 | encoding = NULL; | |
453 | } | |
454 | if (! encoding) | |
455 | /* Unknown REGISTRY, not supported. */ | |
456 | continue; | |
457 | if (repertory) | |
458 | { | |
459 | if (NILP (script) | |
460 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
461 | list = Fcons (entity, list); | |
462 | continue; | |
463 | } | |
464 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
465 | sizeof (Lisp_Object) * 7) | |
466 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
467 | { | |
468 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
469 | sizeof (Lisp_Object) * 7); | |
470 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
471 | scripts = xfont_supported_scripts (display, indices[i], | |
472 | xfont_scratch_props, encoding); | |
473 | } | |
474 | if (NILP (script) | |
475 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 476 | list = Fcons (entity, list); |
c2f5bfd6 | 477 | } |
019e13ef | 478 | XFreeFontNames (names); |
c2f5bfd6 KH |
479 | } |
480 | ||
481 | x_uncatch_errors (); | |
482 | UNBLOCK_INPUT; | |
483 | ||
678dca3d | 484 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
485 | return list; |
486 | } | |
c2f5bfd6 | 487 | |
6c4aeab6 | 488 | static Lisp_Object |
971de7fb | 489 | xfont_list (Lisp_Object frame, Lisp_Object spec) |
6c4aeab6 KH |
490 | { |
491 | FRAME_PTR f = XFRAME (frame); | |
492 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 493 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 494 | int len; |
6a705b23 KH |
495 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
496 | char name[512]; | |
8510724d | 497 | |
6c4aeab6 | 498 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 499 | if (CONSP (extra)) |
c2f5bfd6 | 500 | { |
6c4aeab6 | 501 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 502 | if (! NILP (val)) |
f0c55750 KH |
503 | return Qnil; |
504 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 505 | if (! NILP (val)) |
f0c55750 | 506 | return Qnil; |
c2f5bfd6 | 507 | } |
398dbf26 | 508 | |
f0c55750 | 509 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
510 | len = font_unparse_xlfd (spec, 0, name, 512); |
511 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 512 | return Qnil; |
5a189ffa KH |
513 | |
514 | val = assq_no_quit (QCscript, extra); | |
515 | script = CDR (val); | |
516 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 517 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 518 | { |
f0c55750 KH |
519 | /* Try iso10646-1 */ |
520 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
521 | ||
522 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 523 | { |
f0c55750 | 524 | strcpy (r, "iso10646-1"); |
5a189ffa | 525 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
526 | } |
527 | } | |
528 | if (NILP (list) && ! NILP (registry)) | |
529 | { | |
37470f4d | 530 | /* Try alternate registries. */ |
f0c55750 | 531 | Lisp_Object alter; |
6c4aeab6 | 532 | |
f0c55750 KH |
533 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
534 | Vface_alternative_font_registry_alist), | |
535 | CONSP (alter))) | |
536 | { | |
537 | /* Pointer to REGISTRY-ENCODING field. */ | |
538 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
539 | ||
540 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
541 | if (STRINGP (XCAR (alter)) | |
542 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
543 | { | |
544 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 545 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
546 | if (! NILP (list)) |
547 | break; | |
548 | } | |
6c4aeab6 | 549 | } |
c2f5bfd6 | 550 | } |
37470f4d KH |
551 | if (NILP (list)) |
552 | { | |
553 | /* Try alias. */ | |
554 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
555 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
556 | { | |
72af86bd | 557 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
6a705b23 KH |
558 | if (xfont_encode_coding_xlfd (name) < 0) |
559 | return Qnil; | |
5a189ffa | 560 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 561 | } |
37470f4d | 562 | } |
398dbf26 | 563 | |
f0c55750 | 564 | return list; |
c2f5bfd6 KH |
565 | } |
566 | ||
6e34c9c1 | 567 | static Lisp_Object |
971de7fb | 568 | xfont_match (Lisp_Object frame, Lisp_Object spec) |
6e34c9c1 KH |
569 | { |
570 | FRAME_PTR f = XFRAME (frame); | |
571 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
572 | Lisp_Object extra, val, entity; | |
6a705b23 | 573 | char name[512]; |
6e34c9c1 KH |
574 | XFontStruct *xfont; |
575 | unsigned long value; | |
576 | ||
577 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
578 | val = assq_no_quit (QCname, extra); | |
579 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 580 | { |
6a705b23 | 581 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 582 | return Qnil; |
f0c55750 | 583 | } |
6a705b23 | 584 | else if (SBYTES (XCDR (val)) < 512) |
72af86bd | 585 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
f0c55750 | 586 | else |
6a705b23 KH |
587 | return Qnil; |
588 | if (xfont_encode_coding_xlfd (name) < 0) | |
589 | return Qnil; | |
6e34c9c1 | 590 | |
9c6d1df5 | 591 | BLOCK_INPUT; |
6e34c9c1 | 592 | entity = Qnil; |
6e34c9c1 KH |
593 | xfont = XLoadQueryFont (display, name); |
594 | if (xfont) | |
595 | { | |
596 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
597 | { | |
598 | int len; | |
6a705b23 | 599 | char *s; |
6e34c9c1 | 600 | |
6a705b23 KH |
601 | s = (char *) XGetAtomName (display, (Atom) value); |
602 | len = strlen (s); | |
6e34c9c1 KH |
603 | |
604 | /* If DXPC (a Differential X Protocol Compressor) | |
605 | Ver.3.7 is running, XGetAtomName will return null | |
606 | string. We must avoid such a name. */ | |
607 | if (len > 0) | |
608 | { | |
f0c55750 | 609 | entity = font_make_entity (); |
6e34c9c1 | 610 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 611 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
612 | if (font_parse_xlfd (name, entity) < 0) |
613 | entity = Qnil; | |
614 | } | |
6a705b23 | 615 | XFree (s); |
6e34c9c1 KH |
616 | } |
617 | XFreeFont (display, xfont); | |
618 | } | |
9c6d1df5 | 619 | UNBLOCK_INPUT; |
6e34c9c1 | 620 | |
678dca3d | 621 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
622 | return entity; |
623 | } | |
624 | ||
c2f5bfd6 | 625 | static Lisp_Object |
971de7fb | 626 | xfont_list_family (Lisp_Object frame) |
c2f5bfd6 KH |
627 | { |
628 | FRAME_PTR f = XFRAME (frame); | |
629 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
630 | char **names; | |
631 | int num_fonts, i; | |
632 | Lisp_Object list; | |
633 | char *last_family; | |
634 | int last_len; | |
635 | ||
636 | BLOCK_INPUT; | |
637 | x_catch_errors (dpyinfo->display); | |
638 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
639 | 0x8000, &num_fonts); | |
640 | if (x_had_errors_p (dpyinfo->display)) | |
641 | { | |
642 | /* This error is perhaps due to insufficient memory on X server. | |
643 | Let's just ignore it. */ | |
644 | x_clear_errors (dpyinfo->display); | |
645 | num_fonts = 0; | |
646 | } | |
647 | ||
648 | list = Qnil; | |
649 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
650 | { | |
6a705b23 | 651 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 652 | Lisp_Object family; |
6a705b23 | 653 | int decoded_len; |
c2f5bfd6 KH |
654 | |
655 | p0++; /* skip the leading '-' */ | |
656 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
657 | if (! *p0) | |
658 | continue; | |
659 | p1 = ++p0; | |
660 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
661 | if (! *p1 || p1 == p0) | |
662 | continue; | |
663 | if (last_len == p1 - p0 | |
72af86bd | 664 | && memcmp (last_family, p0, last_len) == 0) |
c2f5bfd6 KH |
665 | continue; |
666 | last_len = p1 - p0; | |
667 | last_family = p0; | |
6a705b23 KH |
668 | |
669 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
670 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 671 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
672 | list = Fcons (family, list); |
673 | } | |
674 | ||
675 | XFreeFontNames (names); | |
676 | x_uncatch_errors (); | |
677 | UNBLOCK_INPUT; | |
678 | ||
679 | return list; | |
680 | } | |
681 | ||
f0c55750 | 682 | static Lisp_Object |
971de7fb | 683 | xfont_open (FRAME_PTR f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 KH |
684 | { |
685 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
686 | Display *display = dpyinfo->display; | |
6a705b23 | 687 | char name[512]; |
c2f5bfd6 KH |
688 | int len; |
689 | unsigned long value; | |
690 | Lisp_Object registry; | |
691 | struct charset *encoding, *repertory; | |
f0c55750 | 692 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
693 | struct font *font; |
694 | XFontStruct *xfont; | |
695 | ||
696 | /* At first, check if we know how to encode characters for this | |
697 | font. */ | |
698 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 699 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 700 | { |
678dca3d | 701 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
702 | return Qnil; |
703 | } | |
c2f5bfd6 KH |
704 | |
705 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
706 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
707 | else if (pixel_size == 0) |
708 | { | |
709 | if (FRAME_FONT (f)) | |
710 | pixel_size = FRAME_FONT (f)->pixel_size; | |
711 | else | |
712 | pixel_size = 14; | |
713 | } | |
6a705b23 KH |
714 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
715 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 716 | { |
678dca3d | 717 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
718 | return Qnil; |
719 | } | |
c2f5bfd6 KH |
720 | |
721 | BLOCK_INPUT; | |
722 | x_catch_errors (display); | |
723 | xfont = XLoadQueryFont (display, name); | |
724 | if (x_had_errors_p (display)) | |
725 | { | |
726 | /* This error is perhaps due to insufficient memory on X server. | |
727 | Let's just ignore it. */ | |
728 | x_clear_errors (display); | |
729 | xfont = NULL; | |
730 | } | |
2f73901f KH |
731 | else if (! xfont) |
732 | { | |
733 | /* Some version of X lists: | |
734 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
735 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
736 | but can open only: | |
737 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
738 | and | |
739 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
740 | So, we try again with wildcards in RESX and RESY. */ | |
741 | Lisp_Object temp; | |
742 | ||
743 | temp = Fcopy_font_spec (entity); | |
744 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
745 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
746 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 747 | { |
678dca3d | 748 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
749 | return Qnil; |
750 | } | |
751 | xfont = XLoadQueryFont (display, name); | |
752 | if (x_had_errors_p (display)) | |
753 | { | |
754 | /* This error is perhaps due to insufficient memory on X server. | |
755 | Let's just ignore it. */ | |
756 | x_clear_errors (display); | |
757 | xfont = NULL; | |
758 | } | |
759 | } | |
f0c55750 KH |
760 | fullname = Qnil; |
761 | /* Try to get the full name of FONT. */ | |
762 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
763 | { | |
764 | char *p0, *p; | |
765 | int dashes = 0; | |
766 | ||
8510724d | 767 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
768 | /* Count the number of dashes in the "full name". |
769 | If it is too few, this isn't really the font's full name, | |
770 | so don't use it. | |
771 | In X11R4, the fonts did not come with their canonical names | |
772 | stored in them. */ | |
773 | while (*p) | |
774 | { | |
775 | if (*p == '-') | |
776 | dashes++; | |
777 | p++; | |
778 | } | |
779 | ||
780 | if (dashes >= 13) | |
6a705b23 KH |
781 | { |
782 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
783 | fullname = Fdowncase (make_string (name, len)); | |
784 | } | |
f0c55750 KH |
785 | XFree (p0); |
786 | } | |
c2f5bfd6 KH |
787 | x_uncatch_errors (); |
788 | UNBLOCK_INPUT; | |
789 | ||
790 | if (! xfont) | |
c8e0e16d | 791 | { |
678dca3d | 792 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
793 | return Qnil; |
794 | } | |
f0c55750 | 795 | |
947eecfb KH |
796 | font_object = font_make_object (VECSIZE (struct xfont_info), |
797 | entity, pixel_size); | |
f0c55750 KH |
798 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
799 | if (STRINGP (fullname)) | |
6a705b23 KH |
800 | { |
801 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
802 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
803 | } | |
f0c55750 | 804 | else |
6a705b23 KH |
805 | { |
806 | char buf[512]; | |
807 | ||
808 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
809 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
810 | } | |
f0c55750 KH |
811 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
812 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
813 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
814 | font = XFONT_OBJECT (font_object); | |
815 | ((struct xfont_info *) font)->xfont = xfont; | |
816 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
817 | font->pixel_size = pixel_size; |
818 | font->driver = &xfont_driver; | |
c2f5bfd6 | 819 | font->encoding_charset = encoding->id; |
1886668d | 820 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
821 | font->ascent = xfont->ascent; |
822 | font->descent = xfont->descent; | |
f0c55750 KH |
823 | font->height = font->ascent + font->descent; |
824 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
825 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
826 | { | |
827 | /* Fixed width font. */ | |
f0c55750 | 828 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
829 | } |
830 | else | |
831 | { | |
c2f5bfd6 | 832 | XCharStruct *pcm; |
f0c55750 KH |
833 | XChar2b char2b; |
834 | Lisp_Object val; | |
c2f5bfd6 KH |
835 | |
836 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
837 | pcm = xfont_get_pcm (xfont, &char2b); | |
838 | if (pcm) | |
f0c55750 | 839 | font->space_width = pcm->width; |
c2f5bfd6 | 840 | else |
f0c55750 KH |
841 | font->space_width = 0; |
842 | ||
843 | val = Ffont_get (font_object, QCavgwidth); | |
844 | if (INTEGERP (val)) | |
845 | font->average_width = XINT (val); | |
846 | if (font->average_width < 0) | |
847 | font->average_width = - font->average_width; | |
848 | if (font->average_width == 0 | |
849 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 850 | { |
f0c55750 | 851 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 852 | |
f0c55750 KH |
853 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
854 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
855 | width += pcm->width, n++; | |
4f64a164 KH |
856 | if (n > 0) |
857 | font->average_width = width / n; | |
c2f5bfd6 | 858 | } |
4f64a164 KH |
859 | if (font->average_width == 0) |
860 | /* No easy way other than this to get a reasonable | |
861 | average_width. */ | |
862 | font->average_width | |
863 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 864 | } |
c2f5bfd6 | 865 | |
f0c55750 KH |
866 | BLOCK_INPUT; |
867 | font->underline_thickness | |
868 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
869 | ? (long) value : 0); | |
870 | font->underline_position | |
871 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
872 | ? (long) value : -1); | |
873 | font->baseline_offset | |
c2f5bfd6 KH |
874 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
875 | ? (long) value : 0); | |
f0c55750 | 876 | font->relative_compose |
c2f5bfd6 KH |
877 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
878 | ? (long) value : 0); | |
f0c55750 | 879 | font->default_ascent |
c2f5bfd6 KH |
880 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
881 | ? (long) value : 0); | |
c2f5bfd6 KH |
882 | UNBLOCK_INPUT; |
883 | ||
f0c55750 KH |
884 | if (NILP (fullname)) |
885 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
886 | font->vertical_centering |
887 | = (STRINGP (Vvertical_centering_font_regexp) | |
888 | && (fast_string_match_ignore_case | |
889 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 890 | |
f0c55750 | 891 | return font_object; |
c2f5bfd6 KH |
892 | } |
893 | ||
894 | static void | |
971de7fb | 895 | xfont_close (FRAME_PTR f, struct font *font) |
c2f5bfd6 KH |
896 | { |
897 | BLOCK_INPUT; | |
f0c55750 | 898 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 899 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
900 | } |
901 | ||
902 | static int | |
971de7fb | 903 | xfont_prepare_face (FRAME_PTR f, struct face *face) |
c2f5bfd6 KH |
904 | { |
905 | BLOCK_INPUT; | |
f0c55750 KH |
906 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
907 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
908 | UNBLOCK_INPUT; |
909 | ||
910 | return 0; | |
911 | } | |
912 | ||
c2f5bfd6 | 913 | static int |
971de7fb | 914 | xfont_has_char (Lisp_Object font, int c) |
c2f5bfd6 | 915 | { |
bd0af90d | 916 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 917 | struct charset *encoding; |
bd0af90d | 918 | struct charset *repertory = NULL; |
c2f5bfd6 | 919 | |
bd0af90d KH |
920 | if (EQ (registry, Qiso10646_1)) |
921 | { | |
5a189ffa | 922 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
923 | /* We use a font of `ja' and `ko' adstyle only for a character |
924 | in JISX0208 and KSC5601 charsets respectively. */ | |
925 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
926 | && charset_jisx0208 >= 0) | |
5a189ffa | 927 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
928 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
929 | && charset_ksc5601 >= 0) | |
5a189ffa | 930 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
931 | } |
932 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
933 | /* Unknown REGISTRY, not usable. */ | |
934 | return 0; | |
d156542d KH |
935 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
936 | return 1; | |
c2f5bfd6 KH |
937 | if (! repertory) |
938 | return -1; | |
939 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
940 | } | |
941 | ||
942 | static unsigned | |
971de7fb | 943 | xfont_encode_char (struct font *font, int c) |
c2f5bfd6 | 944 | { |
f0c55750 | 945 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
946 | struct charset *charset; |
947 | unsigned code; | |
948 | XChar2b char2b; | |
949 | ||
950 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
951 | code = ENCODE_CHAR (charset, c); | |
952 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 953 | return FONT_INVALID_CODE; |
1886668d | 954 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 955 | { |
1886668d | 956 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 957 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 958 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 959 | } |
88649c62 KH |
960 | char2b.byte1 = code >> 8; |
961 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 962 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
963 | } |
964 | ||
965 | static int | |
971de7fb | 966 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 | 967 | { |
f0c55750 | 968 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 969 | int width = 0; |
41fa3e2c | 970 | int i, first, x; |
c2f5bfd6 KH |
971 | |
972 | if (metrics) | |
72af86bd | 973 | memset (metrics, 0, sizeof (struct font_metrics)); |
41fa3e2c | 974 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
975 | { |
976 | XChar2b char2b; | |
977 | static XCharStruct *pcm; | |
978 | ||
979 | if (code[i] >= 0x10000) | |
980 | continue; | |
981 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 982 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
983 | if (! pcm) |
984 | continue; | |
41fa3e2c KH |
985 | if (first) |
986 | { | |
987 | if (metrics) | |
988 | { | |
989 | metrics->lbearing = pcm->lbearing; | |
990 | metrics->rbearing = pcm->rbearing; | |
991 | metrics->ascent = pcm->ascent; | |
992 | metrics->descent = pcm->descent; | |
993 | } | |
994 | first = 0; | |
995 | } | |
996 | else | |
997 | { | |
998 | if (metrics) | |
999 | { | |
1000 | if (metrics->lbearing > width + pcm->lbearing) | |
1001 | metrics->lbearing = width + pcm->lbearing; | |
1002 | if (metrics->rbearing < width + pcm->rbearing) | |
1003 | metrics->rbearing = width + pcm->rbearing; | |
1004 | if (metrics->ascent < pcm->ascent) | |
1005 | metrics->ascent = pcm->ascent; | |
1006 | if (metrics->descent < pcm->descent) | |
1007 | metrics->descent = pcm->descent; | |
1008 | } | |
1009 | } | |
c2f5bfd6 KH |
1010 | width += pcm->width; |
1011 | } | |
1012 | if (metrics) | |
1013 | metrics->width = width; | |
1014 | return width; | |
1015 | } | |
1016 | ||
1017 | static int | |
971de7fb | 1018 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, int with_background) |
c2f5bfd6 | 1019 | { |
f0c55750 | 1020 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1021 | int len = to - from; |
6e34c9c1 | 1022 | GC gc = s->gc; |
298fd5b1 | 1023 | int i; |
6e34c9c1 | 1024 | |
f0c55750 | 1025 | if (s->gc != s->face->gc) |
6e34c9c1 | 1026 | { |
d45fefc7 | 1027 | BLOCK_INPUT; |
f0c55750 | 1028 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1029 | UNBLOCK_INPUT; |
6e34c9c1 | 1030 | } |
c2f5bfd6 KH |
1031 | |
1032 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1033 | { | |
1034 | char *str; | |
c2f5bfd6 KH |
1035 | USE_SAFE_ALLOCA; |
1036 | ||
1037 | SAFE_ALLOCA (str, char *, len); | |
1038 | for (i = 0; i < len ; i++) | |
1039 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1040 | BLOCK_INPUT; |
c2f5bfd6 | 1041 | if (with_background > 0) |
298fd5b1 KH |
1042 | { |
1043 | if (s->padding_p) | |
1044 | for (i = 0; i < len; i++) | |
1045 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1046 | gc, x + i, y, str + i, 1); | |
1047 | else | |
1048 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1049 | gc, x, y, str, len); | |
1050 | } | |
c2f5bfd6 | 1051 | else |
298fd5b1 KH |
1052 | { |
1053 | if (s->padding_p) | |
1054 | for (i = 0; i < len; i++) | |
1055 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1056 | gc, x + i, y, str + i, 1); | |
1057 | else | |
1058 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1059 | gc, x, y, str, len); | |
1060 | } | |
d45fefc7 | 1061 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1062 | SAFE_FREE (); |
1063 | return s->nchars; | |
1064 | } | |
1065 | ||
d45fefc7 | 1066 | BLOCK_INPUT; |
c2f5bfd6 | 1067 | if (with_background > 0) |
298fd5b1 KH |
1068 | { |
1069 | if (s->padding_p) | |
1070 | for (i = 0; i < len; i++) | |
1071 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1072 | gc, x + i, y, s->char2b + from + i, 1); | |
1073 | else | |
1074 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1075 | gc, x, y, s->char2b + from, len); | |
1076 | } | |
c2f5bfd6 | 1077 | else |
298fd5b1 KH |
1078 | { |
1079 | if (s->padding_p) | |
1080 | for (i = 0; i < len; i++) | |
1081 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1082 | gc, x + i, y, s->char2b + from + i, 1); | |
1083 | else | |
1084 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1085 | gc, x, y, s->char2b + from, len); | |
1086 | } | |
d45fefc7 | 1087 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1088 | |
1089 | return len; | |
1090 | } | |
1091 | ||
f0c55750 | 1092 | static int |
971de7fb | 1093 | xfont_check (FRAME_PTR f, struct font *font) |
f0c55750 KH |
1094 | { |
1095 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1096 | ||
1097 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1098 | } | |
1099 | ||
c2f5bfd6 KH |
1100 | \f |
1101 | void | |
971de7fb | 1102 | syms_of_xfont (void) |
c2f5bfd6 | 1103 | { |
5a189ffa | 1104 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1105 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1106 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1107 | Lisp_Object args[2]; | |
1108 | args[0] = QCtest; | |
1109 | args[1] = Qequal; | |
1110 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1111 | } | |
5a189ffa | 1112 | staticpro (&xfont_scratch_props); |
46306a17 | 1113 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1114 | xfont_driver.type = Qx; |
1115 | register_font_driver (&xfont_driver, NULL); | |
1116 | } | |
885b7d09 MB |
1117 | |
1118 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
1119 | (do not change this comment) */ |