Commit | Line | Data |
---|---|---|
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> |
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 KH |
48 | /* Prototypes of support functions. */ |
49 | extern void x_clear_errors P_ ((Display *)); | |
50 | ||
c2f5bfd6 | 51 | static XCharStruct *xfont_get_pcm P_ ((XFontStruct *, XChar2b *)); |
f0c55750 | 52 | static void xfont_find_ccl_program P_ ((struct font *)); |
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 | ||
f0c55750 KH |
122 | /* Find a CCL program for a font specified by FONTP, and set the member |
123 | `encoder' of the structure. */ | |
124 | ||
125 | static void | |
126 | xfont_find_ccl_program (font) | |
127 | struct font *font; | |
128 | { | |
129 | Lisp_Object list, elt; | |
130 | ||
131 | elt = Qnil; | |
132 | for (list = Vfont_ccl_encoder_alist; CONSP (list); list = XCDR (list)) | |
133 | { | |
134 | elt = XCAR (list); | |
135 | if (CONSP (elt) | |
136 | && STRINGP (XCAR (elt)) | |
137 | && ((fast_string_match_ignore_case (XCAR (elt), | |
138 | font->props[FONT_NAME_INDEX]) | |
139 | >= 0) | |
140 | || (fast_string_match_ignore_case (XCAR (elt), | |
141 | font->props[FONT_FULLNAME_INDEX]) | |
142 | >= 0))) | |
143 | break; | |
144 | } | |
145 | ||
146 | if (! NILP (list)) | |
147 | { | |
148 | struct ccl_program *ccl | |
149 | = (struct ccl_program *) xmalloc (sizeof (struct ccl_program)); | |
150 | ||
151 | if (setup_ccl_program (ccl, XCDR (elt)) < 0) | |
152 | xfree (ccl); | |
153 | else | |
154 | font->font_encoder = ccl; | |
155 | } | |
156 | } | |
157 | ||
feb2737b | 158 | static Lisp_Object xfont_get_cache P_ ((FRAME_PTR)); |
c2f5bfd6 | 159 | static Lisp_Object xfont_list P_ ((Lisp_Object, Lisp_Object)); |
6e34c9c1 | 160 | static Lisp_Object xfont_match P_ ((Lisp_Object, Lisp_Object)); |
c2f5bfd6 | 161 | static Lisp_Object xfont_list_family P_ ((Lisp_Object)); |
f0c55750 | 162 | static Lisp_Object xfont_open P_ ((FRAME_PTR, Lisp_Object, int)); |
c2f5bfd6 KH |
163 | static void xfont_close P_ ((FRAME_PTR, struct font *)); |
164 | static int xfont_prepare_face P_ ((FRAME_PTR, struct face *)); | |
c2f5bfd6 KH |
165 | static int xfont_has_char P_ ((Lisp_Object, int)); |
166 | static unsigned xfont_encode_char P_ ((struct font *, int)); | |
167 | static int xfont_text_extents P_ ((struct font *, unsigned *, int, | |
168 | struct font_metrics *)); | |
169 | static int xfont_draw P_ ((struct glyph_string *, int, int, int, int, int)); | |
f0c55750 | 170 | static int xfont_check P_ ((FRAME_PTR, struct font *)); |
c2f5bfd6 KH |
171 | |
172 | struct font_driver xfont_driver = | |
173 | { | |
575abfb7 | 174 | 0, /* Qx */ |
f0c55750 | 175 | 0, /* case insensitive */ |
c2f5bfd6 | 176 | xfont_get_cache, |
c2f5bfd6 | 177 | xfont_list, |
6e34c9c1 | 178 | xfont_match, |
c2f5bfd6 KH |
179 | xfont_list_family, |
180 | NULL, | |
181 | xfont_open, | |
182 | xfont_close, | |
183 | xfont_prepare_face, | |
f0c55750 | 184 | NULL, |
c2f5bfd6 KH |
185 | xfont_has_char, |
186 | xfont_encode_char, | |
187 | xfont_text_extents, | |
f0c55750 KH |
188 | xfont_draw, |
189 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
190 | xfont_check | |
c2f5bfd6 KH |
191 | }; |
192 | ||
193 | extern Lisp_Object QCname; | |
194 | ||
195 | static Lisp_Object | |
feb2737b KH |
196 | xfont_get_cache (f) |
197 | FRAME_PTR f; | |
c2f5bfd6 | 198 | { |
feb2737b | 199 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
c2f5bfd6 KH |
200 | |
201 | return (dpyinfo->name_list_element); | |
202 | } | |
203 | ||
c2f5bfd6 KH |
204 | extern Lisp_Object Vface_alternative_font_registry_alist; |
205 | ||
f0c55750 KH |
206 | static int |
207 | compare_font_names (const void *name1, const void *name2) | |
208 | { | |
7740d2c7 KH |
209 | return xstrcasecmp (*(const unsigned char **) name1, |
210 | *(const unsigned char **) name2); | |
f0c55750 KH |
211 | } |
212 | ||
6a705b23 KH |
213 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
214 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
215 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
216 | least twice (plus 1) as large as XLFD. */ | |
217 | ||
218 | static int | |
219 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) | |
220 | { | |
221 | char *p0 = xlfd, *p1 = output; | |
222 | int c; | |
8510724d | 223 | |
6a705b23 KH |
224 | while (*p0) |
225 | { | |
226 | c = *(unsigned char *) p0++; | |
227 | p1 += CHAR_STRING (c, p1); | |
228 | if (--len == 0) | |
229 | break; | |
230 | } | |
231 | *p1 = 0; | |
232 | return (p1 - output); | |
233 | } | |
234 | ||
235 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
236 | resulting byte length. If XLFD contains unencodable character, | |
237 | return -1. */ | |
238 | ||
239 | static int | |
240 | xfont_encode_coding_xlfd (char *xlfd) | |
241 | { | |
242 | const unsigned char *p0 = (unsigned char *) xlfd; | |
243 | unsigned char *p1 = (unsigned char *) xlfd; | |
244 | int len = 0; | |
8510724d | 245 | |
6a705b23 KH |
246 | while (*p0) |
247 | { | |
248 | int c = STRING_CHAR_ADVANCE (p0); | |
249 | ||
250 | if (c >= 0x100) | |
251 | return -1; | |
252 | *p1++ = c; | |
253 | len++; | |
254 | } | |
255 | *p1 = 0; | |
256 | return len; | |
257 | } | |
258 | ||
5a189ffa KH |
259 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
260 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
261 | registry corresponds to ENCODING and REPERTORY. | |
262 | Return 1 if supported, return 0 otherwise. */ | |
263 | ||
264 | static int | |
265 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, | |
266 | struct charset *encoding, struct charset *repertory) | |
267 | { | |
268 | struct charset *charset = repertory ? repertory : encoding; | |
269 | ||
270 | if (CONSP (chars)) | |
271 | { | |
272 | for (; CONSP (chars); chars = XCDR (chars)) | |
273 | { | |
274 | int c = XINT (XCAR (chars)); | |
275 | unsigned code = ENCODE_CHAR (charset, c); | |
276 | XChar2b char2b; | |
277 | ||
278 | if (code == CHARSET_INVALID_CODE (charset)) | |
279 | break; | |
280 | if (! xfont) | |
281 | continue; | |
282 | if (code >= 0x10000) | |
283 | break; | |
284 | char2b.byte1 = code >> 8; | |
285 | char2b.byte2 = code & 0xFF; | |
286 | if (! xfont_get_pcm (xfont, &char2b)) | |
287 | break; | |
288 | } | |
289 | return (NILP (chars)); | |
290 | } | |
291 | else if (VECTORP (chars)) | |
292 | { | |
293 | int i; | |
294 | ||
295 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
296 | { | |
297 | int c = XINT (AREF (chars, i)); | |
298 | unsigned code = ENCODE_CHAR (charset, c); | |
299 | XChar2b char2b; | |
300 | ||
301 | if (code == CHARSET_INVALID_CODE (charset)) | |
302 | continue; | |
303 | if (! xfont) | |
304 | break; | |
305 | if (code >= 0x10000) | |
306 | continue; | |
307 | char2b.byte1 = code >> 8; | |
308 | char2b.byte2 = code & 0xFF; | |
309 | if (xfont_get_pcm (xfont, &char2b)) | |
310 | break; | |
311 | } | |
312 | return (i >= 0); | |
313 | } | |
314 | return 0; | |
315 | } | |
316 | ||
317 | /* A hash table recoding which font supports which scritps. Each key | |
318 | is a vector of characteristic font propertis FOUNDRY to WIDTH and | |
319 | ADDSTYLE, and each value is a list of script symbols. | |
320 | ||
321 | We assume that fonts that have the same value in the above | |
322 | properties supports the same set of characters on all displays. */ | |
323 | ||
324 | static Lisp_Object xfont_scripts_cache; | |
325 | ||
326 | /* Re-usable vector to store characteristic font properites. */ | |
327 | static Lisp_Object xfont_scratch_props; | |
328 | ||
329 | extern Lisp_Object Qlatin; | |
330 | ||
331 | /* Return a list of scripts supported by the font of FONTNAME whose | |
332 | characteristic properties are in PROPS and whose encoding charset | |
333 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
334 | |
335 | static Lisp_Object | |
5a189ffa KH |
336 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
337 | struct charset *encoding) | |
338 | { | |
339 | Lisp_Object scripts; | |
340 | ||
341 | /* Two special cases to avoid opening rather big fonts. */ | |
342 | if (EQ (AREF (props, 2), Qja)) | |
343 | return Fcons (intern ("kana"), Fcons (intern ("han"), Qnil)); | |
344 | if (EQ (AREF (props, 2), Qko)) | |
345 | return Fcons (intern ("hangul"), Qnil); | |
346 | scripts = Fgethash (props, xfont_scripts_cache, Qt); | |
347 | if (EQ (scripts, Qt)) | |
348 | { | |
349 | XFontStruct *xfont; | |
350 | Lisp_Object val; | |
351 | ||
352 | scripts = Qnil; | |
353 | xfont = XLoadQueryFont (display, fontname); | |
354 | if (xfont) | |
355 | { | |
356 | if (xfont->per_char) | |
357 | { | |
358 | for (val = Vscript_representative_chars; CONSP (val); | |
359 | val = XCDR (val)) | |
360 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
361 | { | |
362 | Lisp_Object script = XCAR (XCAR (val)); | |
363 | Lisp_Object chars = XCDR (XCAR (val)); | |
364 | ||
365 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
366 | scripts = Fcons (script, scripts); | |
367 | } | |
368 | } | |
369 | XFreeFont (display, xfont); | |
370 | } | |
371 | if (EQ (AREF (props, 3), Qiso10646_1) | |
372 | && NILP (Fmemq (Qlatin, scripts))) | |
373 | scripts = Fcons (Qlatin, scripts); | |
374 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
375 | } | |
376 | return scripts; | |
377 | } | |
378 | ||
379 | extern Lisp_Object Vscalable_fonts_allowed; | |
380 | ||
381 | static Lisp_Object | |
382 | xfont_list_pattern (Display *display, char *pattern, | |
383 | Lisp_Object registry, Lisp_Object script) | |
c2f5bfd6 | 384 | { |
6c4aeab6 | 385 | Lisp_Object list = Qnil; |
5a189ffa KH |
386 | Lisp_Object chars = Qnil; |
387 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
388 | int i, limit, num_fonts; |
389 | char **names; | |
6a705b23 KH |
390 | /* Large enough to decode the longest XLFD (255 bytes). */ |
391 | char buf[512]; | |
c2f5bfd6 | 392 | |
5a189ffa KH |
393 | if (! NILP (registry) |
394 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
395 | /* Unknown REGISTRY, not supported. */ | |
396 | return Qnil; | |
397 | if (! NILP (script)) | |
398 | { | |
399 | chars = assq_no_quit (script, Vscript_representative_chars); | |
400 | if (NILP (chars)) | |
401 | /* We can't tell whether or not a font supports SCRIPT. */ | |
402 | return Qnil; | |
403 | chars = XCDR (chars); | |
404 | if (repertory) | |
405 | { | |
406 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
407 | return Qnil; | |
408 | script = Qnil; | |
409 | } | |
410 | } | |
411 | if (! repertory && NILP (xfont_scripts_cache)) | |
412 | { | |
413 | Lisp_Object args[2]; | |
414 | ||
415 | args[0] = QCtest; | |
416 | args[1] = Qequal; | |
417 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
418 | } | |
419 | ||
c2f5bfd6 | 420 | BLOCK_INPUT; |
6c4aeab6 | 421 | x_catch_errors (display); |
c2f5bfd6 | 422 | |
6c4aeab6 | 423 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 424 | { |
6c4aeab6 KH |
425 | names = XListFonts (display, pattern, limit, &num_fonts); |
426 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
427 | { |
428 | /* This error is perhaps due to insufficient memory on X | |
429 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
430 | x_clear_errors (display); |
431 | num_fonts = 0; | |
432 | break; | |
c2f5bfd6 | 433 | } |
6c4aeab6 KH |
434 | if (num_fonts < limit) |
435 | break; | |
436 | XFreeFontNames (names); | |
437 | } | |
438 | ||
f0c55750 | 439 | if (num_fonts > 0) |
6c4aeab6 | 440 | { |
f0c55750 | 441 | char **indices = alloca (sizeof (char *) * num_fonts); |
5a189ffa KH |
442 | Lisp_Object *props; |
443 | Lisp_Object scripts = Qnil; | |
6c4aeab6 | 444 | |
5a189ffa KH |
445 | if (NILP (xfont_scratch_props)) |
446 | { | |
447 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); | |
448 | props = XVECTOR (xfont_scratch_props)->contents; | |
449 | } | |
450 | else | |
451 | { | |
452 | props = XVECTOR (xfont_scratch_props)->contents; | |
453 | for (i = 0; i < 8; i++) | |
454 | props[i] = Qnil; | |
455 | } | |
f0c55750 KH |
456 | for (i = 0; i < num_fonts; i++) |
457 | indices[i] = names[i]; | |
458 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 459 | |
f0c55750 | 460 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 461 | { |
f0c55750 | 462 | Lisp_Object entity; |
6c4aeab6 | 463 | |
05131107 | 464 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 465 | continue; |
f0c55750 | 466 | entity = font_make_entity (); |
6a705b23 | 467 | xfont_decode_coding_xlfd (indices[i], -1, buf); |
5a189ffa KH |
468 | font_parse_xlfd (buf, entity); |
469 | ASET (entity, FONT_TYPE_INDEX, Qx); | |
470 | /* Avoid auto-scaled fonts. */ | |
471 | if (XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
472 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) | |
473 | continue; | |
474 | /* Avoid not-allowed scalable fonts. */ | |
475 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 476 | { |
5a189ffa | 477 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) == 0) |
6c4aeab6 | 478 | continue; |
5a189ffa KH |
479 | } |
480 | else if (CONSP (Vscalable_fonts_allowed)) | |
481 | { | |
482 | Lisp_Object tail, elt; | |
483 | ||
484 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
485 | tail = XCDR (tail)) | |
f0c55750 | 486 | { |
5a189ffa KH |
487 | elt = XCAR (tail); |
488 | if (STRINGP (elt) | |
489 | && fast_c_string_match_ignore_case (elt, indices[i]) >= 0) | |
490 | break; | |
f0c55750 | 491 | } |
5a189ffa KH |
492 | if (! CONSP (tail)) |
493 | continue; | |
c2f5bfd6 | 494 | } |
f0c55750 | 495 | |
5a189ffa KH |
496 | /* Update encoding and repertory if necessary. */ |
497 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
498 | { | |
499 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
500 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
501 | encoding = NULL; | |
502 | } | |
503 | if (! encoding) | |
504 | /* Unknown REGISTRY, not supported. */ | |
505 | continue; | |
506 | if (repertory) | |
507 | { | |
508 | if (NILP (script) | |
509 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
510 | list = Fcons (entity, list); | |
511 | continue; | |
512 | } | |
513 | if (memcmp (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
514 | sizeof (Lisp_Object) * 7) | |
515 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) | |
516 | { | |
517 | memcpy (props, &(AREF (entity, FONT_FOUNDRY_INDEX)), | |
518 | sizeof (Lisp_Object) * 7); | |
519 | props[7] = AREF (entity, FONT_SPACING_INDEX); | |
520 | scripts = xfont_supported_scripts (display, indices[i], | |
521 | xfont_scratch_props, encoding); | |
522 | } | |
523 | if (NILP (script) | |
524 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 525 | list = Fcons (entity, list); |
c2f5bfd6 | 526 | } |
019e13ef | 527 | XFreeFontNames (names); |
c2f5bfd6 KH |
528 | } |
529 | ||
530 | x_uncatch_errors (); | |
531 | UNBLOCK_INPUT; | |
532 | ||
960d80b9 | 533 | font_add_log ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
534 | return list; |
535 | } | |
c2f5bfd6 | 536 | |
6c4aeab6 KH |
537 | static Lisp_Object |
538 | xfont_list (frame, spec) | |
539 | Lisp_Object frame, spec; | |
540 | { | |
541 | FRAME_PTR f = XFRAME (frame); | |
542 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
5a189ffa | 543 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 544 | int len; |
6a705b23 KH |
545 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
546 | char name[512]; | |
8510724d | 547 | |
6c4aeab6 | 548 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 549 | if (CONSP (extra)) |
c2f5bfd6 | 550 | { |
6c4aeab6 | 551 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 552 | if (! NILP (val)) |
f0c55750 KH |
553 | return Qnil; |
554 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 555 | if (! NILP (val)) |
f0c55750 | 556 | return Qnil; |
c2f5bfd6 | 557 | } |
398dbf26 | 558 | |
f0c55750 | 559 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
560 | len = font_unparse_xlfd (spec, 0, name, 512); |
561 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 562 | return Qnil; |
5a189ffa KH |
563 | |
564 | val = assq_no_quit (QCscript, extra); | |
565 | script = CDR (val); | |
566 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 567 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 568 | { |
f0c55750 KH |
569 | /* Try iso10646-1 */ |
570 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
571 | ||
572 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 573 | { |
f0c55750 | 574 | strcpy (r, "iso10646-1"); |
5a189ffa | 575 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
576 | } |
577 | } | |
578 | if (NILP (list) && ! NILP (registry)) | |
579 | { | |
37470f4d | 580 | /* Try alternate registries. */ |
f0c55750 | 581 | Lisp_Object alter; |
6c4aeab6 | 582 | |
f0c55750 KH |
583 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
584 | Vface_alternative_font_registry_alist), | |
585 | CONSP (alter))) | |
586 | { | |
587 | /* Pointer to REGISTRY-ENCODING field. */ | |
588 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
589 | ||
590 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
591 | if (STRINGP (XCAR (alter)) | |
592 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
593 | { | |
594 | strcpy (r, (char *) SDATA (XCAR (alter))); | |
5a189ffa | 595 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
596 | if (! NILP (list)) |
597 | break; | |
598 | } | |
6c4aeab6 | 599 | } |
c2f5bfd6 | 600 | } |
37470f4d KH |
601 | if (NILP (list)) |
602 | { | |
603 | /* Try alias. */ | |
604 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
605 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
606 | { | |
607 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
608 | if (xfont_encode_coding_xlfd (name) < 0) | |
609 | return Qnil; | |
5a189ffa | 610 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 611 | } |
37470f4d | 612 | } |
398dbf26 | 613 | |
f0c55750 | 614 | return list; |
c2f5bfd6 KH |
615 | } |
616 | ||
6e34c9c1 KH |
617 | static Lisp_Object |
618 | xfont_match (frame, spec) | |
619 | Lisp_Object frame, spec; | |
620 | { | |
621 | FRAME_PTR f = XFRAME (frame); | |
622 | Display *display = FRAME_X_DISPLAY_INFO (f)->display; | |
623 | Lisp_Object extra, val, entity; | |
6a705b23 | 624 | char name[512]; |
6e34c9c1 KH |
625 | XFontStruct *xfont; |
626 | unsigned long value; | |
627 | ||
628 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
629 | val = assq_no_quit (QCname, extra); | |
630 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 631 | { |
6a705b23 | 632 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 633 | return Qnil; |
f0c55750 | 634 | } |
6a705b23 KH |
635 | else if (SBYTES (XCDR (val)) < 512) |
636 | bcopy (SDATA (XCDR (val)), name, SBYTES (XCDR (val)) + 1); | |
f0c55750 | 637 | else |
6a705b23 KH |
638 | return Qnil; |
639 | if (xfont_encode_coding_xlfd (name) < 0) | |
640 | return Qnil; | |
6e34c9c1 | 641 | |
9c6d1df5 | 642 | BLOCK_INPUT; |
6e34c9c1 | 643 | entity = Qnil; |
6e34c9c1 KH |
644 | xfont = XLoadQueryFont (display, name); |
645 | if (xfont) | |
646 | { | |
647 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
648 | { | |
649 | int len; | |
6a705b23 | 650 | char *s; |
6e34c9c1 | 651 | |
6a705b23 KH |
652 | s = (char *) XGetAtomName (display, (Atom) value); |
653 | len = strlen (s); | |
6e34c9c1 KH |
654 | |
655 | /* If DXPC (a Differential X Protocol Compressor) | |
656 | Ver.3.7 is running, XGetAtomName will return null | |
657 | string. We must avoid such a name. */ | |
658 | if (len > 0) | |
659 | { | |
f0c55750 | 660 | entity = font_make_entity (); |
6e34c9c1 | 661 | ASET (entity, FONT_TYPE_INDEX, Qx); |
6a705b23 | 662 | xfont_decode_coding_xlfd (s, -1, name); |
6e34c9c1 KH |
663 | if (font_parse_xlfd (name, entity) < 0) |
664 | entity = Qnil; | |
665 | } | |
6a705b23 | 666 | XFree (s); |
6e34c9c1 KH |
667 | } |
668 | XFreeFont (display, xfont); | |
669 | } | |
9c6d1df5 | 670 | UNBLOCK_INPUT; |
6e34c9c1 | 671 | |
960d80b9 | 672 | font_add_log ("xfont-match", spec, entity); |
6e34c9c1 KH |
673 | return entity; |
674 | } | |
675 | ||
c2f5bfd6 KH |
676 | static Lisp_Object |
677 | xfont_list_family (frame) | |
9df50a31 | 678 | Lisp_Object frame; |
c2f5bfd6 KH |
679 | { |
680 | FRAME_PTR f = XFRAME (frame); | |
681 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
682 | char **names; | |
683 | int num_fonts, i; | |
684 | Lisp_Object list; | |
685 | char *last_family; | |
686 | int last_len; | |
687 | ||
688 | BLOCK_INPUT; | |
689 | x_catch_errors (dpyinfo->display); | |
690 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
691 | 0x8000, &num_fonts); | |
692 | if (x_had_errors_p (dpyinfo->display)) | |
693 | { | |
694 | /* This error is perhaps due to insufficient memory on X server. | |
695 | Let's just ignore it. */ | |
696 | x_clear_errors (dpyinfo->display); | |
697 | num_fonts = 0; | |
698 | } | |
699 | ||
700 | list = Qnil; | |
701 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
702 | { | |
6a705b23 | 703 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 704 | Lisp_Object family; |
6a705b23 | 705 | int decoded_len; |
c2f5bfd6 KH |
706 | |
707 | p0++; /* skip the leading '-' */ | |
708 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
709 | if (! *p0) | |
710 | continue; | |
711 | p1 = ++p0; | |
712 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
713 | if (! *p1 || p1 == p0) | |
714 | continue; | |
715 | if (last_len == p1 - p0 | |
716 | && bcmp (last_family, p0, last_len) == 0) | |
717 | continue; | |
718 | last_len = p1 - p0; | |
719 | last_family = p0; | |
6a705b23 KH |
720 | |
721 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
722 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 723 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
724 | list = Fcons (family, list); |
725 | } | |
726 | ||
727 | XFreeFontNames (names); | |
728 | x_uncatch_errors (); | |
729 | UNBLOCK_INPUT; | |
730 | ||
731 | return list; | |
732 | } | |
733 | ||
f0c55750 KH |
734 | extern Lisp_Object QCavgwidth; |
735 | ||
736 | static Lisp_Object | |
c2f5bfd6 KH |
737 | xfont_open (f, entity, pixel_size) |
738 | FRAME_PTR f; | |
739 | Lisp_Object entity; | |
740 | int pixel_size; | |
741 | { | |
742 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
743 | Display *display = dpyinfo->display; | |
6a705b23 | 744 | char name[512]; |
c2f5bfd6 KH |
745 | int len; |
746 | unsigned long value; | |
747 | Lisp_Object registry; | |
748 | struct charset *encoding, *repertory; | |
f0c55750 | 749 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
750 | struct font *font; |
751 | XFontStruct *xfont; | |
398dbf26 | 752 | int i; |
c2f5bfd6 KH |
753 | |
754 | /* At first, check if we know how to encode characters for this | |
755 | font. */ | |
756 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 757 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d KH |
758 | { |
759 | font_add_log (" x:unknown registry", registry, Qnil); | |
760 | return Qnil; | |
761 | } | |
c2f5bfd6 KH |
762 | |
763 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
764 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
765 | else if (pixel_size == 0) |
766 | { | |
767 | if (FRAME_FONT (f)) | |
768 | pixel_size = FRAME_FONT (f)->pixel_size; | |
769 | else | |
770 | pixel_size = 14; | |
771 | } | |
6a705b23 KH |
772 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
773 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d KH |
774 | { |
775 | font_add_log (" x:unparse failed", entity, Qnil); | |
776 | return Qnil; | |
777 | } | |
c2f5bfd6 KH |
778 | |
779 | BLOCK_INPUT; | |
780 | x_catch_errors (display); | |
781 | xfont = XLoadQueryFont (display, name); | |
782 | if (x_had_errors_p (display)) | |
783 | { | |
784 | /* This error is perhaps due to insufficient memory on X server. | |
785 | Let's just ignore it. */ | |
786 | x_clear_errors (display); | |
787 | xfont = NULL; | |
788 | } | |
2f73901f KH |
789 | else if (! xfont) |
790 | { | |
791 | /* Some version of X lists: | |
792 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
793 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
794 | but can open only: | |
795 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
796 | and | |
797 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
798 | So, we try again with wildcards in RESX and RESY. */ | |
799 | Lisp_Object temp; | |
800 | ||
801 | temp = Fcopy_font_spec (entity); | |
802 | ASET (temp, FONT_DPI_INDEX, Qnil); | |
6a705b23 KH |
803 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
804 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f KH |
805 | { |
806 | font_add_log (" x:unparse failed", temp, Qnil); | |
807 | return Qnil; | |
808 | } | |
809 | xfont = XLoadQueryFont (display, name); | |
810 | if (x_had_errors_p (display)) | |
811 | { | |
812 | /* This error is perhaps due to insufficient memory on X server. | |
813 | Let's just ignore it. */ | |
814 | x_clear_errors (display); | |
815 | xfont = NULL; | |
816 | } | |
817 | } | |
f0c55750 KH |
818 | fullname = Qnil; |
819 | /* Try to get the full name of FONT. */ | |
820 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
821 | { | |
822 | char *p0, *p; | |
823 | int dashes = 0; | |
824 | ||
8510724d | 825 | p0 = p = (char *) XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
826 | /* Count the number of dashes in the "full name". |
827 | If it is too few, this isn't really the font's full name, | |
828 | so don't use it. | |
829 | In X11R4, the fonts did not come with their canonical names | |
830 | stored in them. */ | |
831 | while (*p) | |
832 | { | |
833 | if (*p == '-') | |
834 | dashes++; | |
835 | p++; | |
836 | } | |
837 | ||
838 | if (dashes >= 13) | |
6a705b23 KH |
839 | { |
840 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
841 | fullname = Fdowncase (make_string (name, len)); | |
842 | } | |
f0c55750 KH |
843 | XFree (p0); |
844 | } | |
c2f5bfd6 KH |
845 | x_uncatch_errors (); |
846 | UNBLOCK_INPUT; | |
847 | ||
848 | if (! xfont) | |
c8e0e16d KH |
849 | { |
850 | font_add_log (" x:open failed", build_string (name), Qnil); | |
851 | return Qnil; | |
852 | } | |
f0c55750 | 853 | |
947eecfb KH |
854 | font_object = font_make_object (VECSIZE (struct xfont_info), |
855 | entity, pixel_size); | |
f0c55750 KH |
856 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
857 | if (STRINGP (fullname)) | |
6a705b23 KH |
858 | { |
859 | font_parse_xlfd ((char *) SDATA (fullname), font_object); | |
860 | ASET (font_object, FONT_NAME_INDEX, fullname); | |
861 | } | |
f0c55750 | 862 | else |
6a705b23 KH |
863 | { |
864 | char buf[512]; | |
865 | ||
866 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
867 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
868 | } | |
f0c55750 KH |
869 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
870 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
871 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
872 | font = XFONT_OBJECT (font_object); | |
873 | ((struct xfont_info *) font)->xfont = xfont; | |
874 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
875 | font->pixel_size = pixel_size; |
876 | font->driver = &xfont_driver; | |
c2f5bfd6 | 877 | font->encoding_charset = encoding->id; |
1886668d | 878 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
879 | font->ascent = xfont->ascent; |
880 | font->descent = xfont->descent; | |
f0c55750 KH |
881 | font->height = font->ascent + font->descent; |
882 | font->min_width = xfont->min_bounds.width; | |
c2f5bfd6 KH |
883 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
884 | { | |
885 | /* Fixed width font. */ | |
f0c55750 | 886 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
887 | } |
888 | else | |
889 | { | |
c2f5bfd6 | 890 | XCharStruct *pcm; |
f0c55750 KH |
891 | XChar2b char2b; |
892 | Lisp_Object val; | |
c2f5bfd6 KH |
893 | |
894 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
895 | pcm = xfont_get_pcm (xfont, &char2b); | |
896 | if (pcm) | |
f0c55750 | 897 | font->space_width = pcm->width; |
c2f5bfd6 | 898 | else |
f0c55750 KH |
899 | font->space_width = 0; |
900 | ||
901 | val = Ffont_get (font_object, QCavgwidth); | |
902 | if (INTEGERP (val)) | |
903 | font->average_width = XINT (val); | |
904 | if (font->average_width < 0) | |
905 | font->average_width = - font->average_width; | |
906 | if (font->average_width == 0 | |
907 | && encoding->ascii_compatible_p) | |
c2f5bfd6 | 908 | { |
f0c55750 | 909 | int width = font->space_width, n = pcm != NULL; |
c2f5bfd6 | 910 | |
f0c55750 KH |
911 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
912 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
913 | width += pcm->width, n++; | |
4f64a164 KH |
914 | if (n > 0) |
915 | font->average_width = width / n; | |
c2f5bfd6 | 916 | } |
4f64a164 KH |
917 | if (font->average_width == 0) |
918 | /* No easy way other than this to get a reasonable | |
919 | average_width. */ | |
920 | font->average_width | |
921 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 922 | } |
c2f5bfd6 | 923 | |
f0c55750 KH |
924 | BLOCK_INPUT; |
925 | font->underline_thickness | |
926 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
927 | ? (long) value : 0); | |
928 | font->underline_position | |
929 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
930 | ? (long) value : -1); | |
931 | font->baseline_offset | |
c2f5bfd6 KH |
932 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
933 | ? (long) value : 0); | |
f0c55750 | 934 | font->relative_compose |
c2f5bfd6 KH |
935 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
936 | ? (long) value : 0); | |
f0c55750 | 937 | font->default_ascent |
c2f5bfd6 KH |
938 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
939 | ? (long) value : 0); | |
c2f5bfd6 KH |
940 | UNBLOCK_INPUT; |
941 | ||
f0c55750 KH |
942 | if (NILP (fullname)) |
943 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
944 | font->vertical_centering |
945 | = (STRINGP (Vvertical_centering_font_regexp) | |
946 | && (fast_string_match_ignore_case | |
947 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 948 | |
f0c55750 | 949 | return font_object; |
c2f5bfd6 KH |
950 | } |
951 | ||
952 | static void | |
953 | xfont_close (f, font) | |
954 | FRAME_PTR f; | |
955 | struct font *font; | |
956 | { | |
957 | BLOCK_INPUT; | |
f0c55750 | 958 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
c2f5bfd6 | 959 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
960 | } |
961 | ||
962 | static int | |
963 | xfont_prepare_face (f, face) | |
964 | FRAME_PTR f; | |
965 | struct face *face; | |
966 | { | |
967 | BLOCK_INPUT; | |
f0c55750 KH |
968 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
969 | ((struct xfont_info *) face->font)->xfont->fid); | |
c2f5bfd6 KH |
970 | UNBLOCK_INPUT; |
971 | ||
972 | return 0; | |
973 | } | |
974 | ||
c2f5bfd6 | 975 | static int |
bd0af90d KH |
976 | xfont_has_char (font, c) |
977 | Lisp_Object font; | |
c2f5bfd6 KH |
978 | int c; |
979 | { | |
bd0af90d | 980 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 981 | struct charset *encoding; |
bd0af90d | 982 | struct charset *repertory = NULL; |
c2f5bfd6 | 983 | |
bd0af90d KH |
984 | if (EQ (registry, Qiso10646_1)) |
985 | { | |
5a189ffa | 986 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
987 | /* We use a font of `ja' and `ko' adstyle only for a character |
988 | in JISX0208 and KSC5601 charsets respectively. */ | |
989 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
990 | && charset_jisx0208 >= 0) | |
5a189ffa | 991 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
992 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
993 | && charset_ksc5601 >= 0) | |
5a189ffa | 994 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
995 | } |
996 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
997 | /* Unknown REGISTRY, not usable. */ | |
998 | return 0; | |
d156542d KH |
999 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
1000 | return 1; | |
c2f5bfd6 KH |
1001 | if (! repertory) |
1002 | return -1; | |
1003 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
1004 | } | |
1005 | ||
1006 | static unsigned | |
1007 | xfont_encode_char (font, c) | |
1008 | struct font *font; | |
1009 | int c; | |
1010 | { | |
f0c55750 | 1011 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
1012 | struct charset *charset; |
1013 | unsigned code; | |
1014 | XChar2b char2b; | |
1015 | ||
1016 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
1017 | code = ENCODE_CHAR (charset, c); | |
1018 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 1019 | return FONT_INVALID_CODE; |
1886668d | 1020 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 1021 | { |
1886668d | 1022 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 1023 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 1024 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 1025 | } |
88649c62 KH |
1026 | char2b.byte1 = code >> 8; |
1027 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 1028 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
1029 | } |
1030 | ||
1031 | static int | |
1032 | xfont_text_extents (font, code, nglyphs, metrics) | |
1033 | struct font *font; | |
1034 | unsigned *code; | |
1035 | int nglyphs; | |
1036 | struct font_metrics *metrics; | |
1037 | { | |
f0c55750 | 1038 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 1039 | int width = 0; |
41fa3e2c | 1040 | int i, first, x; |
c2f5bfd6 KH |
1041 | |
1042 | if (metrics) | |
1043 | bzero (metrics, sizeof (struct font_metrics)); | |
41fa3e2c | 1044 | for (i = 0, x = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
1045 | { |
1046 | XChar2b char2b; | |
1047 | static XCharStruct *pcm; | |
1048 | ||
1049 | if (code[i] >= 0x10000) | |
1050 | continue; | |
1051 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 1052 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
1053 | if (! pcm) |
1054 | continue; | |
41fa3e2c KH |
1055 | if (first) |
1056 | { | |
1057 | if (metrics) | |
1058 | { | |
1059 | metrics->lbearing = pcm->lbearing; | |
1060 | metrics->rbearing = pcm->rbearing; | |
1061 | metrics->ascent = pcm->ascent; | |
1062 | metrics->descent = pcm->descent; | |
1063 | } | |
1064 | first = 0; | |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | if (metrics) | |
1069 | { | |
1070 | if (metrics->lbearing > width + pcm->lbearing) | |
1071 | metrics->lbearing = width + pcm->lbearing; | |
1072 | if (metrics->rbearing < width + pcm->rbearing) | |
1073 | metrics->rbearing = width + pcm->rbearing; | |
1074 | if (metrics->ascent < pcm->ascent) | |
1075 | metrics->ascent = pcm->ascent; | |
1076 | if (metrics->descent < pcm->descent) | |
1077 | metrics->descent = pcm->descent; | |
1078 | } | |
1079 | } | |
c2f5bfd6 KH |
1080 | width += pcm->width; |
1081 | } | |
1082 | if (metrics) | |
1083 | metrics->width = width; | |
1084 | return width; | |
1085 | } | |
1086 | ||
1087 | static int | |
1088 | xfont_draw (s, from, to, x, y, with_background) | |
1089 | struct glyph_string *s; | |
1090 | int from, to, x, y, with_background; | |
1091 | { | |
f0c55750 | 1092 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1093 | int len = to - from; |
6e34c9c1 | 1094 | GC gc = s->gc; |
298fd5b1 | 1095 | int i; |
6e34c9c1 | 1096 | |
f0c55750 | 1097 | if (s->gc != s->face->gc) |
6e34c9c1 | 1098 | { |
d45fefc7 | 1099 | BLOCK_INPUT; |
f0c55750 | 1100 | XSetFont (s->display, gc, xfont->fid); |
d45fefc7 | 1101 | UNBLOCK_INPUT; |
6e34c9c1 | 1102 | } |
c2f5bfd6 KH |
1103 | |
1104 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1105 | { | |
1106 | char *str; | |
c2f5bfd6 KH |
1107 | USE_SAFE_ALLOCA; |
1108 | ||
1109 | SAFE_ALLOCA (str, char *, len); | |
1110 | for (i = 0; i < len ; i++) | |
1111 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
d45fefc7 | 1112 | BLOCK_INPUT; |
c2f5bfd6 | 1113 | if (with_background > 0) |
298fd5b1 KH |
1114 | { |
1115 | if (s->padding_p) | |
1116 | for (i = 0; i < len; i++) | |
1117 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1118 | gc, x + i, y, str + i, 1); | |
1119 | else | |
1120 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1121 | gc, x, y, str, len); | |
1122 | } | |
c2f5bfd6 | 1123 | else |
298fd5b1 KH |
1124 | { |
1125 | if (s->padding_p) | |
1126 | for (i = 0; i < len; i++) | |
1127 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1128 | gc, x + i, y, str + i, 1); | |
1129 | else | |
1130 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1131 | gc, x, y, str, len); | |
1132 | } | |
d45fefc7 | 1133 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1134 | SAFE_FREE (); |
1135 | return s->nchars; | |
1136 | } | |
1137 | ||
d45fefc7 | 1138 | BLOCK_INPUT; |
c2f5bfd6 | 1139 | if (with_background > 0) |
298fd5b1 KH |
1140 | { |
1141 | if (s->padding_p) | |
1142 | for (i = 0; i < len; i++) | |
1143 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1144 | gc, x + i, y, s->char2b + from + i, 1); | |
1145 | else | |
1146 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1147 | gc, x, y, s->char2b + from, len); | |
1148 | } | |
c2f5bfd6 | 1149 | else |
298fd5b1 KH |
1150 | { |
1151 | if (s->padding_p) | |
1152 | for (i = 0; i < len; i++) | |
1153 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1154 | gc, x + i, y, s->char2b + from + i, 1); | |
1155 | else | |
1156 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1157 | gc, x, y, s->char2b + from, len); | |
1158 | } | |
d45fefc7 | 1159 | UNBLOCK_INPUT; |
c2f5bfd6 KH |
1160 | |
1161 | return len; | |
1162 | } | |
1163 | ||
f0c55750 KH |
1164 | static int |
1165 | xfont_check (f, font) | |
1166 | FRAME_PTR f; | |
1167 | struct font *font; | |
1168 | { | |
1169 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1170 | ||
1171 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1172 | } | |
1173 | ||
c2f5bfd6 KH |
1174 | \f |
1175 | void | |
1176 | syms_of_xfont () | |
1177 | { | |
5a189ffa KH |
1178 | staticpro (&xfont_scripts_cache); |
1179 | xfont_scripts_cache = Qnil; | |
1180 | staticpro (&xfont_scratch_props); | |
1181 | xfont_scratch_props = Qnil;; | |
c2f5bfd6 KH |
1182 | xfont_driver.type = Qx; |
1183 | register_font_driver (&xfont_driver, NULL); | |
1184 | } | |
885b7d09 MB |
1185 | |
1186 | /* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749 | |
1187 | (do not change this comment) */ |