Commit | Line | Data |
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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
ba318903 | 2 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
5df4f04c | 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> | |
24 | #include <X11/Xlib.h> | |
25 | ||
26 | #include "lisp.h" | |
27 | #include "dispextern.h" | |
28 | #include "xterm.h" | |
29 | #include "frame.h" | |
30 | #include "blockinput.h" | |
31 | #include "character.h" | |
32 | #include "charset.h" | |
33 | #include "fontset.h" | |
34 | #include "font.h" | |
f0c55750 | 35 | #include "ccl.h" |
c2f5bfd6 KH |
36 | |
37 | \f | |
38 | /* X core font driver. */ | |
39 | ||
f0c55750 KH |
40 | struct xfont_info |
41 | { | |
42 | struct font font; | |
43 | Display *display; | |
44 | XFontStruct *xfont; | |
19dae293 | 45 | unsigned x_display_id; |
f0c55750 KH |
46 | }; |
47 | ||
c2f5bfd6 | 48 | /* Prototypes of support functions. */ |
c2f5bfd6 | 49 | |
f57e2426 | 50 | static XCharStruct *xfont_get_pcm (XFontStruct *, XChar2b *); |
c2f5bfd6 KH |
51 | |
52 | /* Get metrics of character CHAR2B in XFONT. Value is null if CHAR2B | |
53 | is not contained in the font. */ | |
54 | ||
55 | static XCharStruct * | |
971de7fb | 56 | xfont_get_pcm (XFontStruct *xfont, XChar2b *char2b) |
c2f5bfd6 KH |
57 | { |
58 | /* The result metric information. */ | |
59 | XCharStruct *pcm = NULL; | |
60 | ||
4e6a86c6 | 61 | eassert (xfont && char2b); |
c2f5bfd6 KH |
62 | |
63 | if (xfont->per_char != NULL) | |
64 | { | |
65 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
66 | { | |
67 | /* min_char_or_byte2 specifies the linear character index | |
68 | corresponding to the first element of the per_char array, | |
69 | max_char_or_byte2 is the index of the last character. A | |
70 | character with non-zero CHAR2B->byte1 is not in the font. | |
71 | A character with byte2 less than min_char_or_byte2 or | |
72 | greater max_char_or_byte2 is not in the font. */ | |
73 | if (char2b->byte1 == 0 | |
74 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
75 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
76 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; | |
77 | } | |
78 | else | |
79 | { | |
80 | /* If either min_byte1 or max_byte1 are nonzero, both | |
81 | min_char_or_byte2 and max_char_or_byte2 are less than | |
82 | 256, and the 2-byte character index values corresponding | |
83 | to the per_char array element N (counting from 0) are: | |
84 | ||
85 | byte1 = N/D + min_byte1 | |
86 | byte2 = N\D + min_char_or_byte2 | |
87 | ||
88 | where: | |
89 | ||
90 | D = max_char_or_byte2 - min_char_or_byte2 + 1 | |
91 | / = integer division | |
92 | \ = integer modulus */ | |
93 | if (char2b->byte1 >= xfont->min_byte1 | |
94 | && char2b->byte1 <= xfont->max_byte1 | |
95 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
96 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
97 | pcm = (xfont->per_char | |
98 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) | |
99 | * (char2b->byte1 - xfont->min_byte1)) | |
100 | + (char2b->byte2 - xfont->min_char_or_byte2)); | |
101 | } | |
102 | } | |
103 | else | |
104 | { | |
105 | /* If the per_char pointer is null, all glyphs between the first | |
106 | and last character indexes inclusive have the same | |
107 | information, as given by both min_bounds and max_bounds. */ | |
108 | if (char2b->byte2 >= xfont->min_char_or_byte2 | |
109 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
110 | pcm = &xfont->max_bounds; | |
111 | } | |
112 | ||
113 | return ((pcm == NULL | |
114 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) | |
115 | ? NULL : pcm); | |
116 | } | |
117 | ||
a10c8269 | 118 | static Lisp_Object xfont_get_cache (struct frame *); |
fdb396e2 DA |
119 | static Lisp_Object xfont_list (struct frame *, Lisp_Object); |
120 | static Lisp_Object xfont_match (struct frame *, Lisp_Object); | |
121 | static Lisp_Object xfont_list_family (struct frame *); | |
a10c8269 | 122 | static Lisp_Object xfont_open (struct frame *, Lisp_Object, int); |
78e0b35c | 123 | static void xfont_close (struct font *); |
24ce6a02 | 124 | static void xfont_prepare_face (struct frame *, struct face *); |
f57e2426 J |
125 | static int xfont_has_char (Lisp_Object, int); |
126 | static unsigned xfont_encode_char (struct font *, int); | |
127 | static int xfont_text_extents (struct font *, unsigned *, int, | |
128 | struct font_metrics *); | |
a864ef14 | 129 | static int xfont_draw (struct glyph_string *, int, int, int, int, bool); |
a10c8269 | 130 | static int xfont_check (struct frame *, struct font *); |
c2f5bfd6 KH |
131 | |
132 | struct font_driver xfont_driver = | |
133 | { | |
bfe3e0a2 | 134 | LISP_INITIALLY_ZERO, /* Qx */ |
f0c55750 | 135 | 0, /* case insensitive */ |
c2f5bfd6 | 136 | xfont_get_cache, |
c2f5bfd6 | 137 | xfont_list, |
6e34c9c1 | 138 | xfont_match, |
c2f5bfd6 KH |
139 | xfont_list_family, |
140 | NULL, | |
141 | xfont_open, | |
142 | xfont_close, | |
143 | xfont_prepare_face, | |
f0c55750 | 144 | NULL, |
c2f5bfd6 KH |
145 | xfont_has_char, |
146 | xfont_encode_char, | |
147 | xfont_text_extents, | |
f0c55750 KH |
148 | xfont_draw, |
149 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
637fa988 JD |
150 | xfont_check, |
151 | NULL, /* get_variation_glyphs */ | |
152 | NULL, /* filter_properties */ | |
c2f5bfd6 KH |
153 | }; |
154 | ||
c2f5bfd6 | 155 | static Lisp_Object |
a10c8269 | 156 | xfont_get_cache (struct frame *f) |
c2f5bfd6 | 157 | { |
aad3612f | 158 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 KH |
159 | |
160 | return (dpyinfo->name_list_element); | |
161 | } | |
162 | ||
f0c55750 KH |
163 | static int |
164 | compare_font_names (const void *name1, const void *name2) | |
165 | { | |
fd573f31 PE |
166 | char *const *n1 = name1; |
167 | char *const *n2 = name2; | |
168 | return xstrcasecmp (*n1, *n2); | |
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 | ||
984e7f30 | 176 | static ptrdiff_t |
6a705b23 KH |
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++; | |
efe0234f | 185 | p1 += CHAR_STRING (c, (unsigned char *) p1); |
6a705b23 KH |
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. | |
a864ef14 | 220 | Return true if supported. */ |
5a189ffa | 221 | |
a864ef14 | 222 | static bool |
5a189ffa KH |
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 | { | |
d311d28c | 251 | ptrdiff_t i; |
5a189ffa KH |
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 | ||
0b381c7e JB |
275 | /* A hash table recoding which font supports which scripts. Each key |
276 | is a vector of characteristic font properties FOUNDRY to WIDTH and | |
5a189ffa KH |
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 | ||
0b381c7e | 284 | /* Re-usable vector to store characteristic font properties. */ |
5a189ffa KH |
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)) | |
6c6f1994 | 299 | return list2 (intern ("kana"), intern ("han")); |
5a189ffa | 300 | if (EQ (AREF (props, 2), Qko)) |
6c6f1994 | 301 | return list1 (intern ("hangul")); |
5a189ffa KH |
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 | } | |
51b59d79 | 365 | |
4d7e6e51 | 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); |
91f2d272 | 388 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->contents; |
5a189ffa | 389 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 390 | |
46306a17 | 391 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
086ca913 | 392 | ASET (xfont_scratch_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 | { |
984e7f30 | 399 | ptrdiff_t len; |
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 (); |
984e7f30 DA |
405 | len = xfont_decode_coding_xlfd (indices[i], -1, buf); |
406 | if (font_parse_xlfd (buf, len, entity) < 0) | |
4fa58085 | 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) | |
d923b542 DA |
436 | && fast_c_string_match_ignore_case (elt, indices[i], |
437 | len) >= 0) | |
5a189ffa | 438 | break; |
f0c55750 | 439 | } |
5a189ffa KH |
440 | if (! CONSP (tail)) |
441 | continue; | |
c2f5bfd6 | 442 | } |
f0c55750 | 443 | |
4fa58085 KH |
444 | /* Avoid fonts of invalid registry. */ |
445 | if (NILP (AREF (entity, FONT_REGISTRY_INDEX))) | |
446 | continue; | |
447 | ||
5a189ffa KH |
448 | /* Update encoding and repertory if necessary. */ |
449 | if (! EQ (registry, AREF (entity, FONT_REGISTRY_INDEX))) | |
450 | { | |
451 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
452 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
453 | encoding = NULL; | |
454 | } | |
455 | if (! encoding) | |
456 | /* Unknown REGISTRY, not supported. */ | |
457 | continue; | |
458 | if (repertory) | |
459 | { | |
460 | if (NILP (script) | |
461 | || xfont_chars_supported (chars, NULL, encoding, repertory)) | |
462 | list = Fcons (entity, list); | |
463 | continue; | |
464 | } | |
4939150c | 465 | if (memcmp (props, aref_addr (entity, FONT_FOUNDRY_INDEX), |
663e2b3f | 466 | word_size * 7) |
5a189ffa KH |
467 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) |
468 | { | |
086ca913 DA |
469 | vcopy (xfont_scratch_props, 0, |
470 | aref_addr (entity, FONT_FOUNDRY_INDEX), 7); | |
471 | ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX)); | |
5a189ffa KH |
472 | scripts = xfont_supported_scripts (display, indices[i], |
473 | xfont_scratch_props, encoding); | |
474 | } | |
475 | if (NILP (script) | |
476 | || ! NILP (Fmemq (script, scripts))) | |
f0c55750 | 477 | list = Fcons (entity, list); |
c2f5bfd6 | 478 | } |
019e13ef | 479 | XFreeFontNames (names); |
c2f5bfd6 KH |
480 | } |
481 | ||
482 | x_uncatch_errors (); | |
4d7e6e51 | 483 | unblock_input (); |
c2f5bfd6 | 484 | |
678dca3d | 485 | FONT_ADD_LOG ("xfont-list", build_string (pattern), list); |
6c4aeab6 KH |
486 | return list; |
487 | } | |
c2f5bfd6 | 488 | |
6c4aeab6 | 489 | static Lisp_Object |
fdb396e2 | 490 | xfont_list (struct frame *f, Lisp_Object spec) |
6c4aeab6 | 491 | { |
aad3612f | 492 | Display *display = FRAME_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 | { | |
51b59d79 | 544 | strcpy (r, SSDATA (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 |
fdb396e2 | 568 | xfont_match (struct frame *f, Lisp_Object spec) |
6e34c9c1 | 569 | { |
aad3612f | 570 | Display *display = FRAME_DISPLAY_INFO (f)->display; |
6e34c9c1 | 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 | |
4d7e6e51 | 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 | { | |
7d652d97 | 597 | char *s = XGetAtomName (display, (Atom) value); |
6e34c9c1 KH |
598 | |
599 | /* If DXPC (a Differential X Protocol Compressor) | |
600 | Ver.3.7 is running, XGetAtomName will return null | |
601 | string. We must avoid such a name. */ | |
7de51af5 | 602 | if (*s) |
6e34c9c1 | 603 | { |
984e7f30 | 604 | ptrdiff_t len; |
f0c55750 | 605 | entity = font_make_entity (); |
6e34c9c1 | 606 | ASET (entity, FONT_TYPE_INDEX, Qx); |
984e7f30 DA |
607 | len = xfont_decode_coding_xlfd (s, -1, name); |
608 | if (font_parse_xlfd (name, len, entity) < 0) | |
6e34c9c1 KH |
609 | entity = Qnil; |
610 | } | |
6a705b23 | 611 | XFree (s); |
6e34c9c1 KH |
612 | } |
613 | XFreeFont (display, xfont); | |
614 | } | |
4d7e6e51 | 615 | unblock_input (); |
6e34c9c1 | 616 | |
678dca3d | 617 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
618 | return entity; |
619 | } | |
620 | ||
c2f5bfd6 | 621 | static Lisp_Object |
fdb396e2 | 622 | xfont_list_family (struct frame *f) |
c2f5bfd6 | 623 | { |
aad3612f | 624 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 KH |
625 | char **names; |
626 | int num_fonts, i; | |
627 | Lisp_Object list; | |
e2be39f6 | 628 | char *last_family IF_LINT (= 0); |
c2f5bfd6 KH |
629 | int last_len; |
630 | ||
4d7e6e51 | 631 | block_input (); |
c2f5bfd6 KH |
632 | x_catch_errors (dpyinfo->display); |
633 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
634 | 0x8000, &num_fonts); | |
635 | if (x_had_errors_p (dpyinfo->display)) | |
636 | { | |
637 | /* This error is perhaps due to insufficient memory on X server. | |
638 | Let's just ignore it. */ | |
639 | x_clear_errors (dpyinfo->display); | |
640 | num_fonts = 0; | |
641 | } | |
642 | ||
643 | list = Qnil; | |
644 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
645 | { | |
6a705b23 | 646 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 647 | Lisp_Object family; |
6a705b23 | 648 | int decoded_len; |
c2f5bfd6 KH |
649 | |
650 | p0++; /* skip the leading '-' */ | |
651 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
652 | if (! *p0) | |
653 | continue; | |
654 | p1 = ++p0; | |
655 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
656 | if (! *p1 || p1 == p0) | |
657 | continue; | |
658 | if (last_len == p1 - p0 | |
72af86bd | 659 | && memcmp (last_family, p0, last_len) == 0) |
c2f5bfd6 KH |
660 | continue; |
661 | last_len = p1 - p0; | |
662 | last_family = p0; | |
6a705b23 KH |
663 | |
664 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
665 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 666 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
667 | list = Fcons (family, list); |
668 | } | |
669 | ||
670 | XFreeFontNames (names); | |
671 | x_uncatch_errors (); | |
4d7e6e51 | 672 | unblock_input (); |
c2f5bfd6 KH |
673 | |
674 | return list; | |
675 | } | |
676 | ||
f0c55750 | 677 | static Lisp_Object |
a10c8269 | 678 | xfont_open (struct frame *f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 | 679 | { |
aad3612f | 680 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 | 681 | Display *display = dpyinfo->display; |
6a705b23 | 682 | char name[512]; |
c2f5bfd6 KH |
683 | int len; |
684 | unsigned long value; | |
685 | Lisp_Object registry; | |
686 | struct charset *encoding, *repertory; | |
f0c55750 | 687 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
688 | struct font *font; |
689 | XFontStruct *xfont; | |
690 | ||
691 | /* At first, check if we know how to encode characters for this | |
692 | font. */ | |
693 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 694 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 695 | { |
678dca3d | 696 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
697 | return Qnil; |
698 | } | |
c2f5bfd6 KH |
699 | |
700 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
701 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
702 | else if (pixel_size == 0) |
703 | { | |
704 | if (FRAME_FONT (f)) | |
705 | pixel_size = FRAME_FONT (f)->pixel_size; | |
706 | else | |
707 | pixel_size = 14; | |
708 | } | |
6a705b23 KH |
709 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
710 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 711 | { |
678dca3d | 712 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
713 | return Qnil; |
714 | } | |
c2f5bfd6 | 715 | |
4d7e6e51 | 716 | block_input (); |
c2f5bfd6 KH |
717 | x_catch_errors (display); |
718 | xfont = XLoadQueryFont (display, name); | |
719 | if (x_had_errors_p (display)) | |
720 | { | |
721 | /* This error is perhaps due to insufficient memory on X server. | |
722 | Let's just ignore it. */ | |
723 | x_clear_errors (display); | |
724 | xfont = NULL; | |
725 | } | |
2f73901f KH |
726 | else if (! xfont) |
727 | { | |
728 | /* Some version of X lists: | |
729 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
730 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
731 | but can open only: | |
732 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
733 | and | |
734 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
735 | So, we try again with wildcards in RESX and RESY. */ | |
736 | Lisp_Object temp; | |
737 | ||
92470028 | 738 | temp = copy_font_spec (entity); |
2f73901f | 739 | ASET (temp, FONT_DPI_INDEX, Qnil); |
6a705b23 KH |
740 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
741 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 742 | { |
678dca3d | 743 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
744 | return Qnil; |
745 | } | |
746 | xfont = XLoadQueryFont (display, name); | |
747 | if (x_had_errors_p (display)) | |
748 | { | |
749 | /* This error is perhaps due to insufficient memory on X server. | |
750 | Let's just ignore it. */ | |
751 | x_clear_errors (display); | |
752 | xfont = NULL; | |
753 | } | |
754 | } | |
f0c55750 KH |
755 | fullname = Qnil; |
756 | /* Try to get the full name of FONT. */ | |
757 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
758 | { | |
759 | char *p0, *p; | |
760 | int dashes = 0; | |
761 | ||
7d652d97 | 762 | p0 = p = XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
763 | /* Count the number of dashes in the "full name". |
764 | If it is too few, this isn't really the font's full name, | |
765 | so don't use it. | |
766 | In X11R4, the fonts did not come with their canonical names | |
767 | stored in them. */ | |
768 | while (*p) | |
769 | { | |
770 | if (*p == '-') | |
771 | dashes++; | |
772 | p++; | |
773 | } | |
774 | ||
775 | if (dashes >= 13) | |
6a705b23 KH |
776 | { |
777 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
778 | fullname = Fdowncase (make_string (name, len)); | |
779 | } | |
f0c55750 KH |
780 | XFree (p0); |
781 | } | |
c2f5bfd6 | 782 | x_uncatch_errors (); |
4d7e6e51 | 783 | unblock_input (); |
c2f5bfd6 KH |
784 | |
785 | if (! xfont) | |
c8e0e16d | 786 | { |
678dca3d | 787 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
788 | return Qnil; |
789 | } | |
f0c55750 | 790 | |
947eecfb KH |
791 | font_object = font_make_object (VECSIZE (struct xfont_info), |
792 | entity, pixel_size); | |
f0c55750 KH |
793 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
794 | if (STRINGP (fullname)) | |
6a705b23 | 795 | { |
984e7f30 | 796 | font_parse_xlfd (SSDATA (fullname), SBYTES (fullname), font_object); |
6a705b23 KH |
797 | ASET (font_object, FONT_NAME_INDEX, fullname); |
798 | } | |
f0c55750 | 799 | else |
6a705b23 KH |
800 | { |
801 | char buf[512]; | |
802 | ||
803 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
804 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
805 | } | |
f0c55750 KH |
806 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
807 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
808 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
809 | font = XFONT_OBJECT (font_object); | |
810 | ((struct xfont_info *) font)->xfont = xfont; | |
811 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
19dae293 | 812 | ((struct xfont_info *) font)->x_display_id = FRAME_DISPLAY_INFO (f)->x_id; |
c2f5bfd6 KH |
813 | font->pixel_size = pixel_size; |
814 | font->driver = &xfont_driver; | |
c2f5bfd6 | 815 | font->encoding_charset = encoding->id; |
1886668d | 816 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
817 | font->ascent = xfont->ascent; |
818 | font->descent = xfont->descent; | |
f0c55750 KH |
819 | font->height = font->ascent + font->descent; |
820 | font->min_width = xfont->min_bounds.width; | |
032a42c8 | 821 | font->max_width = xfont->max_bounds.width; |
c2f5bfd6 KH |
822 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
823 | { | |
824 | /* Fixed width font. */ | |
f0c55750 | 825 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
826 | } |
827 | else | |
828 | { | |
c2f5bfd6 | 829 | XCharStruct *pcm; |
f0c55750 KH |
830 | XChar2b char2b; |
831 | Lisp_Object val; | |
c2f5bfd6 KH |
832 | |
833 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
834 | pcm = xfont_get_pcm (xfont, &char2b); | |
835 | if (pcm) | |
f0c55750 | 836 | font->space_width = pcm->width; |
c2f5bfd6 | 837 | else |
f0c55750 KH |
838 | font->space_width = 0; |
839 | ||
840 | val = Ffont_get (font_object, QCavgwidth); | |
841 | if (INTEGERP (val)) | |
18acb5ad | 842 | font->average_width = XINT (val) / 10; |
f0c55750 KH |
843 | if (font->average_width < 0) |
844 | font->average_width = - font->average_width; | |
625a3eb1 | 845 | else |
c2f5bfd6 | 846 | { |
625a3eb1 PE |
847 | if (font->average_width == 0 |
848 | && encoding->ascii_compatible_p) | |
849 | { | |
850 | int width = font->space_width, n = pcm != NULL; | |
c2f5bfd6 | 851 | |
625a3eb1 PE |
852 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
853 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
854 | width += pcm->width, n++; | |
855 | if (n > 0) | |
856 | font->average_width = width / n; | |
857 | } | |
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 | } |
c2f5bfd6 | 865 | |
4d7e6e51 | 866 | block_input (); |
f0c55750 KH |
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); | |
4d7e6e51 | 882 | unblock_input (); |
c2f5bfd6 | 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 | |
78e0b35c | 895 | xfont_close (struct font *font) |
c2f5bfd6 | 896 | { |
19dae293 | 897 | struct x_display_info *xdi; |
78e0b35c DA |
898 | struct xfont_info *xfi = (struct xfont_info *) font; |
899 | ||
5ae356d9 | 900 | /* This function may be called from GC when X connection is gone |
61d208ad | 901 | (Bug#16093), and an attempt to free font resources on invalid |
19dae293 DA |
902 | display may lead to X protocol errors or segfaults. Moreover, |
903 | the memory referenced by 'Display *' pointer may be reused for | |
904 | the logically different X connection after the previous display | |
905 | connection was closed. That's why we also check whether font's | |
906 | ID matches the one recorded in x_display_info for this display. | |
907 | See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16069. */ | |
908 | if (xfi->xfont | |
909 | && ((xdi = x_display_info_for_display (xfi->display)) | |
910 | && xfi->x_display_id == xdi->x_id)) | |
78e0b35c DA |
911 | { |
912 | block_input (); | |
913 | XFreeFont (xfi->display, xfi->xfont); | |
914 | unblock_input (); | |
915 | xfi->xfont = NULL; | |
916 | } | |
c2f5bfd6 KH |
917 | } |
918 | ||
24ce6a02 | 919 | static void |
a10c8269 | 920 | xfont_prepare_face (struct frame *f, struct face *face) |
c2f5bfd6 | 921 | { |
4d7e6e51 | 922 | block_input (); |
f0c55750 KH |
923 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
924 | ((struct xfont_info *) face->font)->xfont->fid); | |
4d7e6e51 | 925 | unblock_input (); |
c2f5bfd6 KH |
926 | } |
927 | ||
c2f5bfd6 | 928 | static int |
971de7fb | 929 | xfont_has_char (Lisp_Object font, int c) |
c2f5bfd6 | 930 | { |
bd0af90d | 931 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 932 | struct charset *encoding; |
bd0af90d | 933 | struct charset *repertory = NULL; |
c2f5bfd6 | 934 | |
bd0af90d KH |
935 | if (EQ (registry, Qiso10646_1)) |
936 | { | |
5a189ffa | 937 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
938 | /* We use a font of `ja' and `ko' adstyle only for a character |
939 | in JISX0208 and KSC5601 charsets respectively. */ | |
940 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
941 | && charset_jisx0208 >= 0) | |
5a189ffa | 942 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
943 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
944 | && charset_ksc5601 >= 0) | |
5a189ffa | 945 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
946 | } |
947 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
948 | /* Unknown REGISTRY, not usable. */ | |
949 | return 0; | |
d156542d KH |
950 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
951 | return 1; | |
c2f5bfd6 KH |
952 | if (! repertory) |
953 | return -1; | |
954 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
955 | } | |
956 | ||
957 | static unsigned | |
971de7fb | 958 | xfont_encode_char (struct font *font, int c) |
c2f5bfd6 | 959 | { |
f0c55750 | 960 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
961 | struct charset *charset; |
962 | unsigned code; | |
963 | XChar2b char2b; | |
964 | ||
965 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
966 | code = ENCODE_CHAR (charset, c); | |
967 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 968 | return FONT_INVALID_CODE; |
1886668d | 969 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 970 | { |
1886668d | 971 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 972 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 973 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 974 | } |
88649c62 KH |
975 | char2b.byte1 = code >> 8; |
976 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 977 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
978 | } |
979 | ||
980 | static int | |
971de7fb | 981 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 | 982 | { |
f0c55750 | 983 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 984 | int width = 0; |
bc7b6697 | 985 | int i, first; |
c2f5bfd6 KH |
986 | |
987 | if (metrics) | |
72af86bd | 988 | memset (metrics, 0, sizeof (struct font_metrics)); |
bc7b6697 | 989 | for (i = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
990 | { |
991 | XChar2b char2b; | |
992 | static XCharStruct *pcm; | |
993 | ||
994 | if (code[i] >= 0x10000) | |
995 | continue; | |
996 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 997 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
998 | if (! pcm) |
999 | continue; | |
41fa3e2c KH |
1000 | if (first) |
1001 | { | |
1002 | if (metrics) | |
1003 | { | |
1004 | metrics->lbearing = pcm->lbearing; | |
1005 | metrics->rbearing = pcm->rbearing; | |
1006 | metrics->ascent = pcm->ascent; | |
1007 | metrics->descent = pcm->descent; | |
1008 | } | |
1009 | first = 0; | |
1010 | } | |
1011 | else | |
1012 | { | |
1013 | if (metrics) | |
1014 | { | |
1015 | if (metrics->lbearing > width + pcm->lbearing) | |
1016 | metrics->lbearing = width + pcm->lbearing; | |
1017 | if (metrics->rbearing < width + pcm->rbearing) | |
1018 | metrics->rbearing = width + pcm->rbearing; | |
1019 | if (metrics->ascent < pcm->ascent) | |
1020 | metrics->ascent = pcm->ascent; | |
1021 | if (metrics->descent < pcm->descent) | |
1022 | metrics->descent = pcm->descent; | |
1023 | } | |
1024 | } | |
c2f5bfd6 KH |
1025 | width += pcm->width; |
1026 | } | |
1027 | if (metrics) | |
1028 | metrics->width = width; | |
1029 | return width; | |
1030 | } | |
1031 | ||
1032 | static int | |
a864ef14 PE |
1033 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, |
1034 | bool with_background) | |
c2f5bfd6 | 1035 | { |
f0c55750 | 1036 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1037 | int len = to - from; |
6e34c9c1 | 1038 | GC gc = s->gc; |
298fd5b1 | 1039 | int i; |
6e34c9c1 | 1040 | |
f0c55750 | 1041 | if (s->gc != s->face->gc) |
6e34c9c1 | 1042 | { |
4d7e6e51 | 1043 | block_input (); |
f0c55750 | 1044 | XSetFont (s->display, gc, xfont->fid); |
4d7e6e51 | 1045 | unblock_input (); |
6e34c9c1 | 1046 | } |
c2f5bfd6 KH |
1047 | |
1048 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1049 | { | |
c2f5bfd6 | 1050 | USE_SAFE_ALLOCA; |
98c6f1e3 | 1051 | char *str = SAFE_ALLOCA (len); |
c2f5bfd6 KH |
1052 | for (i = 0; i < len ; i++) |
1053 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
4d7e6e51 | 1054 | block_input (); |
a864ef14 | 1055 | if (with_background) |
298fd5b1 KH |
1056 | { |
1057 | if (s->padding_p) | |
1058 | for (i = 0; i < len; i++) | |
1059 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1060 | gc, x + i, y, str + i, 1); | |
1061 | else | |
1062 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1063 | gc, x, y, str, len); | |
1064 | } | |
c2f5bfd6 | 1065 | else |
298fd5b1 KH |
1066 | { |
1067 | if (s->padding_p) | |
1068 | for (i = 0; i < len; i++) | |
1069 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1070 | gc, x + i, y, str + i, 1); | |
1071 | else | |
1072 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1073 | gc, x, y, str, len); | |
1074 | } | |
4d7e6e51 | 1075 | unblock_input (); |
c2f5bfd6 KH |
1076 | SAFE_FREE (); |
1077 | return s->nchars; | |
1078 | } | |
1079 | ||
4d7e6e51 | 1080 | block_input (); |
a864ef14 | 1081 | if (with_background) |
298fd5b1 KH |
1082 | { |
1083 | if (s->padding_p) | |
1084 | for (i = 0; i < len; i++) | |
1085 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1086 | gc, x + i, y, s->char2b + from + i, 1); | |
1087 | else | |
1088 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1089 | gc, x, y, s->char2b + from, len); | |
1090 | } | |
c2f5bfd6 | 1091 | else |
298fd5b1 KH |
1092 | { |
1093 | if (s->padding_p) | |
1094 | for (i = 0; i < len; i++) | |
1095 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1096 | gc, x + i, y, s->char2b + from + i, 1); | |
1097 | else | |
1098 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1099 | gc, x, y, s->char2b + from, len); | |
1100 | } | |
4d7e6e51 | 1101 | unblock_input (); |
c2f5bfd6 KH |
1102 | |
1103 | return len; | |
1104 | } | |
1105 | ||
f0c55750 | 1106 | static int |
a10c8269 | 1107 | xfont_check (struct frame *f, struct font *font) |
f0c55750 KH |
1108 | { |
1109 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1110 | ||
1111 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1112 | } | |
1113 | ||
c2f5bfd6 KH |
1114 | \f |
1115 | void | |
971de7fb | 1116 | syms_of_xfont (void) |
c2f5bfd6 | 1117 | { |
5a189ffa | 1118 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1119 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1120 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1121 | Lisp_Object args[2]; | |
1122 | args[0] = QCtest; | |
1123 | args[1] = Qequal; | |
1124 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1125 | } | |
5a189ffa | 1126 | staticpro (&xfont_scratch_props); |
46306a17 | 1127 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1128 | xfont_driver.type = Qx; |
1129 | register_font_driver (&xfont_driver, NULL); | |
1130 | } |