Commit | Line | Data |
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c2f5bfd6 | 1 | /* xfont.c -- X core font driver. |
ab422c4d | 2 | Copyright (C) 2006-2013 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; | |
45 | }; | |
46 | ||
c2f5bfd6 | 47 | /* Prototypes of support functions. */ |
c2f5bfd6 | 48 | |
f57e2426 | 49 | static XCharStruct *xfont_get_pcm (XFontStruct *, XChar2b *); |
c2f5bfd6 KH |
50 | |
51 | /* Get metrics of character CHAR2B in XFONT. Value is null if CHAR2B | |
52 | is not contained in the font. */ | |
53 | ||
54 | static XCharStruct * | |
971de7fb | 55 | xfont_get_pcm (XFontStruct *xfont, XChar2b *char2b) |
c2f5bfd6 KH |
56 | { |
57 | /* The result metric information. */ | |
58 | XCharStruct *pcm = NULL; | |
59 | ||
4e6a86c6 | 60 | eassert (xfont && char2b); |
c2f5bfd6 KH |
61 | |
62 | if (xfont->per_char != NULL) | |
63 | { | |
64 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
65 | { | |
66 | /* min_char_or_byte2 specifies the linear character index | |
67 | corresponding to the first element of the per_char array, | |
68 | max_char_or_byte2 is the index of the last character. A | |
69 | character with non-zero CHAR2B->byte1 is not in the font. | |
70 | A character with byte2 less than min_char_or_byte2 or | |
71 | greater max_char_or_byte2 is not in the font. */ | |
72 | if (char2b->byte1 == 0 | |
73 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
74 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
75 | pcm = xfont->per_char + char2b->byte2 - xfont->min_char_or_byte2; | |
76 | } | |
77 | else | |
78 | { | |
79 | /* If either min_byte1 or max_byte1 are nonzero, both | |
80 | min_char_or_byte2 and max_char_or_byte2 are less than | |
81 | 256, and the 2-byte character index values corresponding | |
82 | to the per_char array element N (counting from 0) are: | |
83 | ||
84 | byte1 = N/D + min_byte1 | |
85 | byte2 = N\D + min_char_or_byte2 | |
86 | ||
87 | where: | |
88 | ||
89 | D = max_char_or_byte2 - min_char_or_byte2 + 1 | |
90 | / = integer division | |
91 | \ = integer modulus */ | |
92 | if (char2b->byte1 >= xfont->min_byte1 | |
93 | && char2b->byte1 <= xfont->max_byte1 | |
94 | && char2b->byte2 >= xfont->min_char_or_byte2 | |
95 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
96 | pcm = (xfont->per_char | |
97 | + ((xfont->max_char_or_byte2 - xfont->min_char_or_byte2 + 1) | |
98 | * (char2b->byte1 - xfont->min_byte1)) | |
99 | + (char2b->byte2 - xfont->min_char_or_byte2)); | |
100 | } | |
101 | } | |
102 | else | |
103 | { | |
104 | /* If the per_char pointer is null, all glyphs between the first | |
105 | and last character indexes inclusive have the same | |
106 | information, as given by both min_bounds and max_bounds. */ | |
107 | if (char2b->byte2 >= xfont->min_char_or_byte2 | |
108 | && char2b->byte2 <= xfont->max_char_or_byte2) | |
109 | pcm = &xfont->max_bounds; | |
110 | } | |
111 | ||
112 | return ((pcm == NULL | |
113 | || (pcm->width == 0 && (pcm->rbearing - pcm->lbearing) == 0)) | |
114 | ? NULL : pcm); | |
115 | } | |
116 | ||
a10c8269 | 117 | static Lisp_Object xfont_get_cache (struct frame *); |
fdb396e2 DA |
118 | static Lisp_Object xfont_list (struct frame *, Lisp_Object); |
119 | static Lisp_Object xfont_match (struct frame *, Lisp_Object); | |
120 | static Lisp_Object xfont_list_family (struct frame *); | |
a10c8269 DA |
121 | static Lisp_Object xfont_open (struct frame *, Lisp_Object, int); |
122 | static void xfont_close (struct frame *, struct font *); | |
123 | static int xfont_prepare_face (struct frame *, struct face *); | |
f57e2426 J |
124 | static int xfont_has_char (Lisp_Object, int); |
125 | static unsigned xfont_encode_char (struct font *, int); | |
126 | static int xfont_text_extents (struct font *, unsigned *, int, | |
127 | struct font_metrics *); | |
a864ef14 | 128 | static int xfont_draw (struct glyph_string *, int, int, int, int, bool); |
a10c8269 | 129 | static int xfont_check (struct frame *, struct font *); |
c2f5bfd6 KH |
130 | |
131 | struct font_driver xfont_driver = | |
132 | { | |
bfe3e0a2 | 133 | LISP_INITIALLY_ZERO, /* Qx */ |
f0c55750 | 134 | 0, /* case insensitive */ |
c2f5bfd6 | 135 | xfont_get_cache, |
c2f5bfd6 | 136 | xfont_list, |
6e34c9c1 | 137 | xfont_match, |
c2f5bfd6 KH |
138 | xfont_list_family, |
139 | NULL, | |
140 | xfont_open, | |
141 | xfont_close, | |
142 | xfont_prepare_face, | |
f0c55750 | 143 | NULL, |
c2f5bfd6 KH |
144 | xfont_has_char, |
145 | xfont_encode_char, | |
146 | xfont_text_extents, | |
f0c55750 KH |
147 | xfont_draw, |
148 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
637fa988 JD |
149 | xfont_check, |
150 | NULL, /* get_variation_glyphs */ | |
151 | NULL, /* filter_properties */ | |
c2f5bfd6 KH |
152 | }; |
153 | ||
c2f5bfd6 | 154 | static Lisp_Object |
a10c8269 | 155 | xfont_get_cache (struct frame *f) |
c2f5bfd6 | 156 | { |
aad3612f | 157 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 KH |
158 | |
159 | return (dpyinfo->name_list_element); | |
160 | } | |
161 | ||
f0c55750 KH |
162 | static int |
163 | compare_font_names (const void *name1, const void *name2) | |
164 | { | |
fd573f31 PE |
165 | char *const *n1 = name1; |
166 | char *const *n2 = name2; | |
167 | return xstrcasecmp (*n1, *n2); | |
f0c55750 KH |
168 | } |
169 | ||
6a705b23 KH |
170 | /* Decode XLFD as iso-8859-1 into OUTPUT, and return the byte length |
171 | of the decoding result. LEN is the byte length of XLFD, or -1 if | |
172 | XLFD is NULL terminated. The caller must assure that OUTPUT is at | |
173 | least twice (plus 1) as large as XLFD. */ | |
174 | ||
984e7f30 | 175 | static ptrdiff_t |
6a705b23 KH |
176 | xfont_decode_coding_xlfd (char *xlfd, int len, char *output) |
177 | { | |
178 | char *p0 = xlfd, *p1 = output; | |
179 | int c; | |
8510724d | 180 | |
6a705b23 KH |
181 | while (*p0) |
182 | { | |
183 | c = *(unsigned char *) p0++; | |
efe0234f | 184 | p1 += CHAR_STRING (c, (unsigned char *) p1); |
6a705b23 KH |
185 | if (--len == 0) |
186 | break; | |
187 | } | |
188 | *p1 = 0; | |
189 | return (p1 - output); | |
190 | } | |
191 | ||
192 | /* Encode XLFD from UTF-8 to iso-8859-1 destructively, and return the | |
193 | resulting byte length. If XLFD contains unencodable character, | |
194 | return -1. */ | |
195 | ||
196 | static int | |
197 | xfont_encode_coding_xlfd (char *xlfd) | |
198 | { | |
199 | const unsigned char *p0 = (unsigned char *) xlfd; | |
200 | unsigned char *p1 = (unsigned char *) xlfd; | |
201 | int len = 0; | |
8510724d | 202 | |
6a705b23 KH |
203 | while (*p0) |
204 | { | |
205 | int c = STRING_CHAR_ADVANCE (p0); | |
206 | ||
207 | if (c >= 0x100) | |
208 | return -1; | |
209 | *p1++ = c; | |
210 | len++; | |
211 | } | |
212 | *p1 = 0; | |
213 | return len; | |
214 | } | |
215 | ||
5a189ffa KH |
216 | /* Check if CHARS (cons or vector) is supported by XFONT whose |
217 | encoding charset is ENCODING (XFONT is NULL) or by a font whose | |
218 | registry corresponds to ENCODING and REPERTORY. | |
a864ef14 | 219 | Return true if supported. */ |
5a189ffa | 220 | |
a864ef14 | 221 | static bool |
5a189ffa KH |
222 | xfont_chars_supported (Lisp_Object chars, XFontStruct *xfont, |
223 | struct charset *encoding, struct charset *repertory) | |
224 | { | |
225 | struct charset *charset = repertory ? repertory : encoding; | |
226 | ||
227 | if (CONSP (chars)) | |
228 | { | |
229 | for (; CONSP (chars); chars = XCDR (chars)) | |
230 | { | |
231 | int c = XINT (XCAR (chars)); | |
232 | unsigned code = ENCODE_CHAR (charset, c); | |
233 | XChar2b char2b; | |
234 | ||
235 | if (code == CHARSET_INVALID_CODE (charset)) | |
236 | break; | |
237 | if (! xfont) | |
238 | continue; | |
239 | if (code >= 0x10000) | |
240 | break; | |
241 | char2b.byte1 = code >> 8; | |
242 | char2b.byte2 = code & 0xFF; | |
243 | if (! xfont_get_pcm (xfont, &char2b)) | |
244 | break; | |
245 | } | |
246 | return (NILP (chars)); | |
247 | } | |
248 | else if (VECTORP (chars)) | |
249 | { | |
d311d28c | 250 | ptrdiff_t i; |
5a189ffa KH |
251 | |
252 | for (i = ASIZE (chars) - 1; i >= 0; i--) | |
253 | { | |
254 | int c = XINT (AREF (chars, i)); | |
255 | unsigned code = ENCODE_CHAR (charset, c); | |
256 | XChar2b char2b; | |
257 | ||
258 | if (code == CHARSET_INVALID_CODE (charset)) | |
259 | continue; | |
260 | if (! xfont) | |
261 | break; | |
262 | if (code >= 0x10000) | |
263 | continue; | |
264 | char2b.byte1 = code >> 8; | |
265 | char2b.byte2 = code & 0xFF; | |
266 | if (xfont_get_pcm (xfont, &char2b)) | |
267 | break; | |
268 | } | |
269 | return (i >= 0); | |
270 | } | |
271 | return 0; | |
272 | } | |
273 | ||
0b381c7e JB |
274 | /* A hash table recoding which font supports which scripts. Each key |
275 | is a vector of characteristic font properties FOUNDRY to WIDTH and | |
5a189ffa KH |
276 | ADDSTYLE, and each value is a list of script symbols. |
277 | ||
278 | We assume that fonts that have the same value in the above | |
279 | properties supports the same set of characters on all displays. */ | |
280 | ||
281 | static Lisp_Object xfont_scripts_cache; | |
282 | ||
0b381c7e | 283 | /* Re-usable vector to store characteristic font properties. */ |
5a189ffa KH |
284 | static Lisp_Object xfont_scratch_props; |
285 | ||
5a189ffa KH |
286 | /* Return a list of scripts supported by the font of FONTNAME whose |
287 | characteristic properties are in PROPS and whose encoding charset | |
288 | is ENCODING. A caller must call BLOCK_INPUT in advance. */ | |
92f19280 KH |
289 | |
290 | static Lisp_Object | |
5a189ffa KH |
291 | xfont_supported_scripts (Display *display, char *fontname, Lisp_Object props, |
292 | struct charset *encoding) | |
293 | { | |
294 | Lisp_Object scripts; | |
295 | ||
296 | /* Two special cases to avoid opening rather big fonts. */ | |
297 | if (EQ (AREF (props, 2), Qja)) | |
6c6f1994 | 298 | return list2 (intern ("kana"), intern ("han")); |
5a189ffa | 299 | if (EQ (AREF (props, 2), Qko)) |
6c6f1994 | 300 | return list1 (intern ("hangul")); |
5a189ffa KH |
301 | scripts = Fgethash (props, xfont_scripts_cache, Qt); |
302 | if (EQ (scripts, Qt)) | |
303 | { | |
304 | XFontStruct *xfont; | |
305 | Lisp_Object val; | |
306 | ||
307 | scripts = Qnil; | |
308 | xfont = XLoadQueryFont (display, fontname); | |
309 | if (xfont) | |
310 | { | |
311 | if (xfont->per_char) | |
312 | { | |
313 | for (val = Vscript_representative_chars; CONSP (val); | |
314 | val = XCDR (val)) | |
315 | if (CONSP (XCAR (val)) && SYMBOLP (XCAR (XCAR (val)))) | |
316 | { | |
317 | Lisp_Object script = XCAR (XCAR (val)); | |
318 | Lisp_Object chars = XCDR (XCAR (val)); | |
319 | ||
320 | if (xfont_chars_supported (chars, xfont, encoding, NULL)) | |
321 | scripts = Fcons (script, scripts); | |
322 | } | |
323 | } | |
324 | XFreeFont (display, xfont); | |
325 | } | |
326 | if (EQ (AREF (props, 3), Qiso10646_1) | |
327 | && NILP (Fmemq (Qlatin, scripts))) | |
328 | scripts = Fcons (Qlatin, scripts); | |
329 | Fputhash (Fcopy_sequence (props), scripts, xfont_scripts_cache); | |
330 | } | |
331 | return scripts; | |
332 | } | |
333 | ||
5a189ffa | 334 | static Lisp_Object |
675e2c69 | 335 | xfont_list_pattern (Display *display, const char *pattern, |
5a189ffa | 336 | Lisp_Object registry, Lisp_Object script) |
c2f5bfd6 | 337 | { |
6c4aeab6 | 338 | Lisp_Object list = Qnil; |
5a189ffa KH |
339 | Lisp_Object chars = Qnil; |
340 | struct charset *encoding, *repertory = NULL; | |
6c4aeab6 KH |
341 | int i, limit, num_fonts; |
342 | char **names; | |
6a705b23 KH |
343 | /* Large enough to decode the longest XLFD (255 bytes). */ |
344 | char buf[512]; | |
c2f5bfd6 | 345 | |
5a189ffa KH |
346 | if (! NILP (registry) |
347 | && font_registry_charsets (registry, &encoding, &repertory) < 0) | |
348 | /* Unknown REGISTRY, not supported. */ | |
349 | return Qnil; | |
350 | if (! NILP (script)) | |
351 | { | |
352 | chars = assq_no_quit (script, Vscript_representative_chars); | |
353 | if (NILP (chars)) | |
354 | /* We can't tell whether or not a font supports SCRIPT. */ | |
355 | return Qnil; | |
356 | chars = XCDR (chars); | |
357 | if (repertory) | |
358 | { | |
359 | if (! xfont_chars_supported (chars, NULL, encoding, repertory)) | |
360 | return Qnil; | |
361 | script = Qnil; | |
362 | } | |
363 | } | |
51b59d79 | 364 | |
4d7e6e51 | 365 | block_input (); |
6c4aeab6 | 366 | x_catch_errors (display); |
c2f5bfd6 | 367 | |
6c4aeab6 | 368 | for (limit = 512; ; limit *= 2) |
c2f5bfd6 | 369 | { |
6c4aeab6 KH |
370 | names = XListFonts (display, pattern, limit, &num_fonts); |
371 | if (x_had_errors_p (display)) | |
c2f5bfd6 KH |
372 | { |
373 | /* This error is perhaps due to insufficient memory on X | |
374 | server. Let's just ignore it. */ | |
6c4aeab6 KH |
375 | x_clear_errors (display); |
376 | num_fonts = 0; | |
377 | break; | |
c2f5bfd6 | 378 | } |
6c4aeab6 KH |
379 | if (num_fonts < limit) |
380 | break; | |
381 | XFreeFontNames (names); | |
382 | } | |
383 | ||
f0c55750 | 384 | if (num_fonts > 0) |
6c4aeab6 | 385 | { |
f0c55750 | 386 | char **indices = alloca (sizeof (char *) * num_fonts); |
d6d9cbc1 | 387 | Lisp_Object *props = XVECTOR (xfont_scratch_props)->u.contents; |
5a189ffa | 388 | Lisp_Object scripts = Qnil; |
6c4aeab6 | 389 | |
46306a17 | 390 | for (i = 0; i < ASIZE (xfont_scratch_props); i++) |
086ca913 | 391 | ASET (xfont_scratch_props, i, Qnil); |
f0c55750 KH |
392 | for (i = 0; i < num_fonts; i++) |
393 | indices[i] = names[i]; | |
394 | qsort (indices, num_fonts, sizeof (char *), compare_font_names); | |
6c4aeab6 | 395 | |
f0c55750 | 396 | for (i = 0; i < num_fonts; i++) |
c2f5bfd6 | 397 | { |
984e7f30 | 398 | ptrdiff_t len; |
f0c55750 | 399 | Lisp_Object entity; |
6c4aeab6 | 400 | |
05131107 | 401 | if (i > 0 && xstrcasecmp (indices[i - 1], indices[i]) == 0) |
6c4aeab6 | 402 | continue; |
f0c55750 | 403 | entity = font_make_entity (); |
984e7f30 DA |
404 | len = xfont_decode_coding_xlfd (indices[i], -1, buf); |
405 | if (font_parse_xlfd (buf, len, entity) < 0) | |
4fa58085 | 406 | continue; |
5a189ffa KH |
407 | ASET (entity, FONT_TYPE_INDEX, Qx); |
408 | /* Avoid auto-scaled fonts. */ | |
4fa58085 KH |
409 | if (INTEGERP (AREF (entity, FONT_DPI_INDEX)) |
410 | && INTEGERP (AREF (entity, FONT_AVGWIDTH_INDEX)) | |
411 | && XINT (AREF (entity, FONT_DPI_INDEX)) != 0 | |
5a189ffa KH |
412 | && XINT (AREF (entity, FONT_AVGWIDTH_INDEX)) == 0) |
413 | continue; | |
414 | /* Avoid not-allowed scalable fonts. */ | |
415 | if (NILP (Vscalable_fonts_allowed)) | |
c2f5bfd6 | 416 | { |
4fa58085 KH |
417 | int size = 0; |
418 | ||
419 | if (INTEGERP (AREF (entity, FONT_SIZE_INDEX))) | |
420 | size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
421 | else if (FLOATP (AREF (entity, FONT_SIZE_INDEX))) | |
422 | size = XFLOAT_DATA (AREF (entity, FONT_SIZE_INDEX)); | |
423 | if (size == 0) | |
6c4aeab6 | 424 | continue; |
5a189ffa KH |
425 | } |
426 | else if (CONSP (Vscalable_fonts_allowed)) | |
427 | { | |
428 | Lisp_Object tail, elt; | |
429 | ||
430 | for (tail = Vscalable_fonts_allowed; CONSP (tail); | |
431 | tail = XCDR (tail)) | |
f0c55750 | 432 | { |
5a189ffa KH |
433 | elt = XCAR (tail); |
434 | if (STRINGP (elt) | |
d923b542 DA |
435 | && fast_c_string_match_ignore_case (elt, indices[i], |
436 | len) >= 0) | |
5a189ffa | 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 | } | |
4939150c | 464 | if (memcmp (props, aref_addr (entity, FONT_FOUNDRY_INDEX), |
663e2b3f | 465 | word_size * 7) |
5a189ffa KH |
466 | || ! EQ (AREF (entity, FONT_SPACING_INDEX), props[7])) |
467 | { | |
086ca913 DA |
468 | vcopy (xfont_scratch_props, 0, |
469 | aref_addr (entity, FONT_FOUNDRY_INDEX), 7); | |
470 | ASET (xfont_scratch_props, 7, AREF (entity, FONT_SPACING_INDEX)); | |
5a189ffa KH |
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 (); | |
4d7e6e51 | 482 | unblock_input (); |
c2f5bfd6 | 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 |
fdb396e2 | 489 | xfont_list (struct frame *f, Lisp_Object spec) |
6c4aeab6 | 490 | { |
aad3612f | 491 | Display *display = FRAME_DISPLAY_INFO (f)->display; |
5a189ffa | 492 | Lisp_Object registry, list, val, extra, script; |
6c4aeab6 | 493 | int len; |
6a705b23 KH |
494 | /* Large enough to contain the longest XLFD (255 bytes) in UTF-8. */ |
495 | char name[512]; | |
8510724d | 496 | |
6c4aeab6 | 497 | extra = AREF (spec, FONT_EXTRA_INDEX); |
6c4aeab6 | 498 | if (CONSP (extra)) |
c2f5bfd6 | 499 | { |
6c4aeab6 | 500 | val = assq_no_quit (QCotf, extra); |
6c4aeab6 | 501 | if (! NILP (val)) |
f0c55750 KH |
502 | return Qnil; |
503 | val = assq_no_quit (QClang, extra); | |
6c4aeab6 | 504 | if (! NILP (val)) |
f0c55750 | 505 | return Qnil; |
c2f5bfd6 | 506 | } |
398dbf26 | 507 | |
f0c55750 | 508 | registry = AREF (spec, FONT_REGISTRY_INDEX); |
6a705b23 KH |
509 | len = font_unparse_xlfd (spec, 0, name, 512); |
510 | if (len < 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
f0c55750 | 511 | return Qnil; |
5a189ffa KH |
512 | |
513 | val = assq_no_quit (QCscript, extra); | |
514 | script = CDR (val); | |
515 | list = xfont_list_pattern (display, name, registry, script); | |
f0c55750 | 516 | if (NILP (list) && NILP (registry)) |
c2f5bfd6 | 517 | { |
f0c55750 KH |
518 | /* Try iso10646-1 */ |
519 | char *r = name + len - 9; /* 9 == strlen (iso8859-1) */ | |
520 | ||
521 | if (r - name + 10 < 256) /* 10 == strlen (iso10646-1) */ | |
6c4aeab6 | 522 | { |
f0c55750 | 523 | strcpy (r, "iso10646-1"); |
5a189ffa | 524 | list = xfont_list_pattern (display, name, Qiso10646_1, script); |
f0c55750 KH |
525 | } |
526 | } | |
527 | if (NILP (list) && ! NILP (registry)) | |
528 | { | |
37470f4d | 529 | /* Try alternate registries. */ |
f0c55750 | 530 | Lisp_Object alter; |
6c4aeab6 | 531 | |
f0c55750 KH |
532 | if ((alter = Fassoc (SYMBOL_NAME (registry), |
533 | Vface_alternative_font_registry_alist), | |
534 | CONSP (alter))) | |
535 | { | |
536 | /* Pointer to REGISTRY-ENCODING field. */ | |
537 | char *r = name + len - SBYTES (SYMBOL_NAME (registry)); | |
538 | ||
539 | for (alter = XCDR (alter); CONSP (alter); alter = XCDR (alter)) | |
540 | if (STRINGP (XCAR (alter)) | |
541 | && ((r - name) + SBYTES (XCAR (alter))) < 256) | |
542 | { | |
51b59d79 | 543 | strcpy (r, SSDATA (XCAR (alter))); |
5a189ffa | 544 | list = xfont_list_pattern (display, name, registry, script); |
f0c55750 KH |
545 | if (! NILP (list)) |
546 | break; | |
547 | } | |
6c4aeab6 | 548 | } |
c2f5bfd6 | 549 | } |
37470f4d KH |
550 | if (NILP (list)) |
551 | { | |
552 | /* Try alias. */ | |
553 | val = assq_no_quit (QCname, AREF (spec, FONT_EXTRA_INDEX)); | |
6a705b23 KH |
554 | if (CONSP (val) && STRINGP (XCDR (val)) && SBYTES (XCDR (val)) < 512) |
555 | { | |
72af86bd | 556 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
6a705b23 KH |
557 | if (xfont_encode_coding_xlfd (name) < 0) |
558 | return Qnil; | |
5a189ffa | 559 | list = xfont_list_pattern (display, name, registry, script); |
6a705b23 | 560 | } |
37470f4d | 561 | } |
398dbf26 | 562 | |
f0c55750 | 563 | return list; |
c2f5bfd6 KH |
564 | } |
565 | ||
6e34c9c1 | 566 | static Lisp_Object |
fdb396e2 | 567 | xfont_match (struct frame *f, Lisp_Object spec) |
6e34c9c1 | 568 | { |
aad3612f | 569 | Display *display = FRAME_DISPLAY_INFO (f)->display; |
6e34c9c1 | 570 | Lisp_Object extra, val, entity; |
6a705b23 | 571 | char name[512]; |
6e34c9c1 KH |
572 | XFontStruct *xfont; |
573 | unsigned long value; | |
574 | ||
575 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
576 | val = assq_no_quit (QCname, extra); | |
577 | if (! CONSP (val) || ! STRINGP (XCDR (val))) | |
f0c55750 | 578 | { |
6a705b23 | 579 | if (font_unparse_xlfd (spec, 0, name, 512) < 0) |
f0c55750 | 580 | return Qnil; |
f0c55750 | 581 | } |
6a705b23 | 582 | else if (SBYTES (XCDR (val)) < 512) |
72af86bd | 583 | memcpy (name, SDATA (XCDR (val)), SBYTES (XCDR (val)) + 1); |
f0c55750 | 584 | else |
6a705b23 KH |
585 | return Qnil; |
586 | if (xfont_encode_coding_xlfd (name) < 0) | |
587 | return Qnil; | |
6e34c9c1 | 588 | |
4d7e6e51 | 589 | block_input (); |
6e34c9c1 | 590 | entity = Qnil; |
6e34c9c1 KH |
591 | xfont = XLoadQueryFont (display, name); |
592 | if (xfont) | |
593 | { | |
594 | if (XGetFontProperty (xfont, XA_FONT, &value)) | |
595 | { | |
7d652d97 | 596 | char *s = XGetAtomName (display, (Atom) value); |
6e34c9c1 KH |
597 | |
598 | /* If DXPC (a Differential X Protocol Compressor) | |
599 | Ver.3.7 is running, XGetAtomName will return null | |
600 | string. We must avoid such a name. */ | |
7de51af5 | 601 | if (*s) |
6e34c9c1 | 602 | { |
984e7f30 | 603 | ptrdiff_t len; |
f0c55750 | 604 | entity = font_make_entity (); |
6e34c9c1 | 605 | ASET (entity, FONT_TYPE_INDEX, Qx); |
984e7f30 DA |
606 | len = xfont_decode_coding_xlfd (s, -1, name); |
607 | if (font_parse_xlfd (name, len, entity) < 0) | |
6e34c9c1 KH |
608 | entity = Qnil; |
609 | } | |
6a705b23 | 610 | XFree (s); |
6e34c9c1 KH |
611 | } |
612 | XFreeFont (display, xfont); | |
613 | } | |
4d7e6e51 | 614 | unblock_input (); |
6e34c9c1 | 615 | |
678dca3d | 616 | FONT_ADD_LOG ("xfont-match", spec, entity); |
6e34c9c1 KH |
617 | return entity; |
618 | } | |
619 | ||
c2f5bfd6 | 620 | static Lisp_Object |
fdb396e2 | 621 | xfont_list_family (struct frame *f) |
c2f5bfd6 | 622 | { |
aad3612f | 623 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 KH |
624 | char **names; |
625 | int num_fonts, i; | |
626 | Lisp_Object list; | |
e2be39f6 | 627 | char *last_family IF_LINT (= 0); |
c2f5bfd6 KH |
628 | int last_len; |
629 | ||
4d7e6e51 | 630 | block_input (); |
c2f5bfd6 KH |
631 | x_catch_errors (dpyinfo->display); |
632 | names = XListFonts (dpyinfo->display, "-*-*-*-*-*-*-*-*-*-*-*-*-*-*", | |
633 | 0x8000, &num_fonts); | |
634 | if (x_had_errors_p (dpyinfo->display)) | |
635 | { | |
636 | /* This error is perhaps due to insufficient memory on X server. | |
637 | Let's just ignore it. */ | |
638 | x_clear_errors (dpyinfo->display); | |
639 | num_fonts = 0; | |
640 | } | |
641 | ||
642 | list = Qnil; | |
643 | for (i = 0, last_len = 0; i < num_fonts; i++) | |
644 | { | |
6a705b23 | 645 | char *p0 = names[i], *p1, buf[512]; |
c2f5bfd6 | 646 | Lisp_Object family; |
6a705b23 | 647 | int decoded_len; |
c2f5bfd6 KH |
648 | |
649 | p0++; /* skip the leading '-' */ | |
650 | while (*p0 && *p0 != '-') p0++; /* skip foundry */ | |
651 | if (! *p0) | |
652 | continue; | |
653 | p1 = ++p0; | |
654 | while (*p1 && *p1 != '-') p1++; /* find the end of family */ | |
655 | if (! *p1 || p1 == p0) | |
656 | continue; | |
657 | if (last_len == p1 - p0 | |
72af86bd | 658 | && memcmp (last_family, p0, last_len) == 0) |
c2f5bfd6 KH |
659 | continue; |
660 | last_len = p1 - p0; | |
661 | last_family = p0; | |
6a705b23 KH |
662 | |
663 | decoded_len = xfont_decode_coding_xlfd (p0, last_len, buf); | |
664 | family = font_intern_prop (p0, decoded_len, 1); | |
29428bb8 | 665 | if (NILP (assq_no_quit (family, list))) |
c2f5bfd6 KH |
666 | list = Fcons (family, list); |
667 | } | |
668 | ||
669 | XFreeFontNames (names); | |
670 | x_uncatch_errors (); | |
4d7e6e51 | 671 | unblock_input (); |
c2f5bfd6 KH |
672 | |
673 | return list; | |
674 | } | |
675 | ||
f0c55750 | 676 | static Lisp_Object |
a10c8269 | 677 | xfont_open (struct frame *f, Lisp_Object entity, int pixel_size) |
c2f5bfd6 | 678 | { |
aad3612f | 679 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
c2f5bfd6 | 680 | Display *display = dpyinfo->display; |
6a705b23 | 681 | char name[512]; |
c2f5bfd6 KH |
682 | int len; |
683 | unsigned long value; | |
684 | Lisp_Object registry; | |
685 | struct charset *encoding, *repertory; | |
f0c55750 | 686 | Lisp_Object font_object, fullname; |
c2f5bfd6 KH |
687 | struct font *font; |
688 | XFontStruct *xfont; | |
689 | ||
690 | /* At first, check if we know how to encode characters for this | |
691 | font. */ | |
692 | registry = AREF (entity, FONT_REGISTRY_INDEX); | |
a9822ae8 | 693 | if (font_registry_charsets (registry, &encoding, &repertory) < 0) |
c8e0e16d | 694 | { |
678dca3d | 695 | FONT_ADD_LOG (" x:unknown registry", registry, Qnil); |
c8e0e16d KH |
696 | return Qnil; |
697 | } | |
c2f5bfd6 KH |
698 | |
699 | if (XINT (AREF (entity, FONT_SIZE_INDEX)) != 0) | |
700 | pixel_size = XINT (AREF (entity, FONT_SIZE_INDEX)); | |
f0c55750 KH |
701 | else if (pixel_size == 0) |
702 | { | |
703 | if (FRAME_FONT (f)) | |
704 | pixel_size = FRAME_FONT (f)->pixel_size; | |
705 | else | |
706 | pixel_size = 14; | |
707 | } | |
6a705b23 KH |
708 | len = font_unparse_xlfd (entity, pixel_size, name, 512); |
709 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
c8e0e16d | 710 | { |
678dca3d | 711 | FONT_ADD_LOG (" x:unparse failed", entity, Qnil); |
c8e0e16d KH |
712 | return Qnil; |
713 | } | |
c2f5bfd6 | 714 | |
4d7e6e51 | 715 | block_input (); |
c2f5bfd6 KH |
716 | x_catch_errors (display); |
717 | xfont = XLoadQueryFont (display, name); | |
718 | if (x_had_errors_p (display)) | |
719 | { | |
720 | /* This error is perhaps due to insufficient memory on X server. | |
721 | Let's just ignore it. */ | |
722 | x_clear_errors (display); | |
723 | xfont = NULL; | |
724 | } | |
2f73901f KH |
725 | else if (! xfont) |
726 | { | |
727 | /* Some version of X lists: | |
728 | -misc-fixed-medium-r-normal--20-*-75-75-c-100-iso8859-1 | |
729 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
730 | but can open only: | |
731 | -misc-fixed-medium-r-normal--20-*-100-100-c-100-iso8859-1 | |
732 | and | |
733 | -misc-fixed-medium-r-normal--20-*-*-*-c-100-iso8859-1 | |
734 | So, we try again with wildcards in RESX and RESY. */ | |
735 | Lisp_Object temp; | |
736 | ||
92470028 | 737 | temp = copy_font_spec (entity); |
2f73901f | 738 | ASET (temp, FONT_DPI_INDEX, Qnil); |
6a705b23 KH |
739 | len = font_unparse_xlfd (temp, pixel_size, name, 512); |
740 | if (len <= 0 || (len = xfont_encode_coding_xlfd (name)) < 0) | |
2f73901f | 741 | { |
678dca3d | 742 | FONT_ADD_LOG (" x:unparse failed", temp, Qnil); |
2f73901f KH |
743 | return Qnil; |
744 | } | |
745 | xfont = XLoadQueryFont (display, name); | |
746 | if (x_had_errors_p (display)) | |
747 | { | |
748 | /* This error is perhaps due to insufficient memory on X server. | |
749 | Let's just ignore it. */ | |
750 | x_clear_errors (display); | |
751 | xfont = NULL; | |
752 | } | |
753 | } | |
f0c55750 KH |
754 | fullname = Qnil; |
755 | /* Try to get the full name of FONT. */ | |
756 | if (xfont && XGetFontProperty (xfont, XA_FONT, &value)) | |
757 | { | |
758 | char *p0, *p; | |
759 | int dashes = 0; | |
760 | ||
7d652d97 | 761 | p0 = p = XGetAtomName (FRAME_X_DISPLAY (f), (Atom) value); |
f0c55750 KH |
762 | /* Count the number of dashes in the "full name". |
763 | If it is too few, this isn't really the font's full name, | |
764 | so don't use it. | |
765 | In X11R4, the fonts did not come with their canonical names | |
766 | stored in them. */ | |
767 | while (*p) | |
768 | { | |
769 | if (*p == '-') | |
770 | dashes++; | |
771 | p++; | |
772 | } | |
773 | ||
774 | if (dashes >= 13) | |
6a705b23 KH |
775 | { |
776 | len = xfont_decode_coding_xlfd (p0, -1, name); | |
777 | fullname = Fdowncase (make_string (name, len)); | |
778 | } | |
f0c55750 KH |
779 | XFree (p0); |
780 | } | |
c2f5bfd6 | 781 | x_uncatch_errors (); |
4d7e6e51 | 782 | unblock_input (); |
c2f5bfd6 KH |
783 | |
784 | if (! xfont) | |
c8e0e16d | 785 | { |
678dca3d | 786 | FONT_ADD_LOG (" x:open failed", build_string (name), Qnil); |
c8e0e16d KH |
787 | return Qnil; |
788 | } | |
f0c55750 | 789 | |
947eecfb KH |
790 | font_object = font_make_object (VECSIZE (struct xfont_info), |
791 | entity, pixel_size); | |
f0c55750 KH |
792 | ASET (font_object, FONT_TYPE_INDEX, Qx); |
793 | if (STRINGP (fullname)) | |
6a705b23 | 794 | { |
984e7f30 | 795 | font_parse_xlfd (SSDATA (fullname), SBYTES (fullname), font_object); |
6a705b23 KH |
796 | ASET (font_object, FONT_NAME_INDEX, fullname); |
797 | } | |
f0c55750 | 798 | else |
6a705b23 KH |
799 | { |
800 | char buf[512]; | |
801 | ||
802 | len = xfont_decode_coding_xlfd (name, -1, buf); | |
803 | ASET (font_object, FONT_NAME_INDEX, make_string (buf, len)); | |
804 | } | |
f0c55750 KH |
805 | ASET (font_object, FONT_FULLNAME_INDEX, fullname); |
806 | ASET (font_object, FONT_FILE_INDEX, Qnil); | |
807 | ASET (font_object, FONT_FORMAT_INDEX, Qx); | |
808 | font = XFONT_OBJECT (font_object); | |
809 | ((struct xfont_info *) font)->xfont = xfont; | |
810 | ((struct xfont_info *) font)->display = FRAME_X_DISPLAY (f); | |
c2f5bfd6 KH |
811 | font->pixel_size = pixel_size; |
812 | font->driver = &xfont_driver; | |
c2f5bfd6 | 813 | font->encoding_charset = encoding->id; |
1886668d | 814 | font->repertory_charset = repertory ? repertory->id : -1; |
c2f5bfd6 KH |
815 | font->ascent = xfont->ascent; |
816 | font->descent = xfont->descent; | |
f0c55750 KH |
817 | font->height = font->ascent + font->descent; |
818 | font->min_width = xfont->min_bounds.width; | |
032a42c8 | 819 | font->max_width = xfont->max_bounds.width; |
c2f5bfd6 KH |
820 | if (xfont->min_bounds.width == xfont->max_bounds.width) |
821 | { | |
822 | /* Fixed width font. */ | |
f0c55750 | 823 | font->average_width = font->space_width = xfont->min_bounds.width; |
c2f5bfd6 KH |
824 | } |
825 | else | |
826 | { | |
c2f5bfd6 | 827 | XCharStruct *pcm; |
f0c55750 KH |
828 | XChar2b char2b; |
829 | Lisp_Object val; | |
c2f5bfd6 KH |
830 | |
831 | char2b.byte1 = 0x00, char2b.byte2 = 0x20; | |
832 | pcm = xfont_get_pcm (xfont, &char2b); | |
833 | if (pcm) | |
f0c55750 | 834 | font->space_width = pcm->width; |
c2f5bfd6 | 835 | else |
f0c55750 KH |
836 | font->space_width = 0; |
837 | ||
838 | val = Ffont_get (font_object, QCavgwidth); | |
839 | if (INTEGERP (val)) | |
18acb5ad | 840 | font->average_width = XINT (val) / 10; |
f0c55750 KH |
841 | if (font->average_width < 0) |
842 | font->average_width = - font->average_width; | |
625a3eb1 | 843 | else |
c2f5bfd6 | 844 | { |
625a3eb1 PE |
845 | if (font->average_width == 0 |
846 | && encoding->ascii_compatible_p) | |
847 | { | |
848 | int width = font->space_width, n = pcm != NULL; | |
c2f5bfd6 | 849 | |
625a3eb1 PE |
850 | for (char2b.byte2 = 33; char2b.byte2 <= 126; char2b.byte2++) |
851 | if ((pcm = xfont_get_pcm (xfont, &char2b)) != NULL) | |
852 | width += pcm->width, n++; | |
853 | if (n > 0) | |
854 | font->average_width = width / n; | |
855 | } | |
856 | if (font->average_width == 0) | |
857 | /* No easy way other than this to get a reasonable | |
858 | average_width. */ | |
859 | font->average_width | |
860 | = (xfont->min_bounds.width + xfont->max_bounds.width) / 2; | |
c2f5bfd6 | 861 | } |
c2f5bfd6 | 862 | } |
c2f5bfd6 | 863 | |
4d7e6e51 | 864 | block_input (); |
f0c55750 KH |
865 | font->underline_thickness |
866 | = (XGetFontProperty (xfont, XA_UNDERLINE_THICKNESS, &value) | |
867 | ? (long) value : 0); | |
868 | font->underline_position | |
869 | = (XGetFontProperty (xfont, XA_UNDERLINE_POSITION, &value) | |
870 | ? (long) value : -1); | |
871 | font->baseline_offset | |
c2f5bfd6 KH |
872 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_BASELINE_OFFSET, &value) |
873 | ? (long) value : 0); | |
f0c55750 | 874 | font->relative_compose |
c2f5bfd6 KH |
875 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_RELATIVE_COMPOSE, &value) |
876 | ? (long) value : 0); | |
f0c55750 | 877 | font->default_ascent |
c2f5bfd6 KH |
878 | = (XGetFontProperty (xfont, dpyinfo->Xatom_MULE_DEFAULT_ASCENT, &value) |
879 | ? (long) value : 0); | |
4d7e6e51 | 880 | unblock_input (); |
c2f5bfd6 | 881 | |
f0c55750 KH |
882 | if (NILP (fullname)) |
883 | fullname = AREF (font_object, FONT_NAME_INDEX); | |
634c4da0 KH |
884 | font->vertical_centering |
885 | = (STRINGP (Vvertical_centering_font_regexp) | |
886 | && (fast_string_match_ignore_case | |
887 | (Vvertical_centering_font_regexp, fullname) >= 0)); | |
c2f5bfd6 | 888 | |
f0c55750 | 889 | return font_object; |
c2f5bfd6 KH |
890 | } |
891 | ||
892 | static void | |
a10c8269 | 893 | xfont_close (struct frame *f, struct font *font) |
c2f5bfd6 | 894 | { |
4d7e6e51 | 895 | block_input (); |
f0c55750 | 896 | XFreeFont (FRAME_X_DISPLAY (f), ((struct xfont_info *) font)->xfont); |
4d7e6e51 | 897 | unblock_input (); |
c2f5bfd6 KH |
898 | } |
899 | ||
900 | static int | |
a10c8269 | 901 | xfont_prepare_face (struct frame *f, struct face *face) |
c2f5bfd6 | 902 | { |
4d7e6e51 | 903 | block_input (); |
f0c55750 KH |
904 | XSetFont (FRAME_X_DISPLAY (f), face->gc, |
905 | ((struct xfont_info *) face->font)->xfont->fid); | |
4d7e6e51 | 906 | unblock_input (); |
c2f5bfd6 KH |
907 | |
908 | return 0; | |
909 | } | |
910 | ||
c2f5bfd6 | 911 | static int |
971de7fb | 912 | xfont_has_char (Lisp_Object font, int c) |
c2f5bfd6 | 913 | { |
bd0af90d | 914 | Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX); |
d156542d | 915 | struct charset *encoding; |
bd0af90d | 916 | struct charset *repertory = NULL; |
c2f5bfd6 | 917 | |
bd0af90d KH |
918 | if (EQ (registry, Qiso10646_1)) |
919 | { | |
5a189ffa | 920 | encoding = CHARSET_FROM_ID (charset_unicode); |
bd0af90d KH |
921 | /* We use a font of `ja' and `ko' adstyle only for a character |
922 | in JISX0208 and KSC5601 charsets respectively. */ | |
923 | if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja) | |
924 | && charset_jisx0208 >= 0) | |
5a189ffa | 925 | repertory = CHARSET_FROM_ID (charset_jisx0208); |
bd0af90d KH |
926 | else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko) |
927 | && charset_ksc5601 >= 0) | |
5a189ffa | 928 | repertory = CHARSET_FROM_ID (charset_ksc5601); |
bd0af90d KH |
929 | } |
930 | else if (font_registry_charsets (registry, &encoding, &repertory) < 0) | |
931 | /* Unknown REGISTRY, not usable. */ | |
932 | return 0; | |
d156542d KH |
933 | if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p) |
934 | return 1; | |
c2f5bfd6 KH |
935 | if (! repertory) |
936 | return -1; | |
937 | return (ENCODE_CHAR (repertory, c) != CHARSET_INVALID_CODE (repertory)); | |
938 | } | |
939 | ||
940 | static unsigned | |
971de7fb | 941 | xfont_encode_char (struct font *font, int c) |
c2f5bfd6 | 942 | { |
f0c55750 | 943 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 KH |
944 | struct charset *charset; |
945 | unsigned code; | |
946 | XChar2b char2b; | |
947 | ||
948 | charset = CHARSET_FROM_ID (font->encoding_charset); | |
949 | code = ENCODE_CHAR (charset, c); | |
950 | if (code == CHARSET_INVALID_CODE (charset)) | |
21138cff | 951 | return FONT_INVALID_CODE; |
1886668d | 952 | if (font->repertory_charset >= 0) |
c2f5bfd6 | 953 | { |
1886668d | 954 | charset = CHARSET_FROM_ID (font->repertory_charset); |
c2f5bfd6 | 955 | return (ENCODE_CHAR (charset, c) != CHARSET_INVALID_CODE (charset) |
21138cff | 956 | ? code : FONT_INVALID_CODE); |
c2f5bfd6 | 957 | } |
88649c62 KH |
958 | char2b.byte1 = code >> 8; |
959 | char2b.byte2 = code & 0xFF; | |
f0c55750 | 960 | return (xfont_get_pcm (xfont, &char2b) ? code : FONT_INVALID_CODE); |
c2f5bfd6 KH |
961 | } |
962 | ||
963 | static int | |
971de7fb | 964 | xfont_text_extents (struct font *font, unsigned int *code, int nglyphs, struct font_metrics *metrics) |
c2f5bfd6 | 965 | { |
f0c55750 | 966 | XFontStruct *xfont = ((struct xfont_info *) font)->xfont; |
c2f5bfd6 | 967 | int width = 0; |
bc7b6697 | 968 | int i, first; |
c2f5bfd6 KH |
969 | |
970 | if (metrics) | |
72af86bd | 971 | memset (metrics, 0, sizeof (struct font_metrics)); |
bc7b6697 | 972 | for (i = 0, first = 1; i < nglyphs; i++) |
c2f5bfd6 KH |
973 | { |
974 | XChar2b char2b; | |
975 | static XCharStruct *pcm; | |
976 | ||
977 | if (code[i] >= 0x10000) | |
978 | continue; | |
979 | char2b.byte1 = code[i] >> 8, char2b.byte2 = code[i] & 0xFF; | |
f0c55750 | 980 | pcm = xfont_get_pcm (xfont, &char2b); |
c2f5bfd6 KH |
981 | if (! pcm) |
982 | continue; | |
41fa3e2c KH |
983 | if (first) |
984 | { | |
985 | if (metrics) | |
986 | { | |
987 | metrics->lbearing = pcm->lbearing; | |
988 | metrics->rbearing = pcm->rbearing; | |
989 | metrics->ascent = pcm->ascent; | |
990 | metrics->descent = pcm->descent; | |
991 | } | |
992 | first = 0; | |
993 | } | |
994 | else | |
995 | { | |
996 | if (metrics) | |
997 | { | |
998 | if (metrics->lbearing > width + pcm->lbearing) | |
999 | metrics->lbearing = width + pcm->lbearing; | |
1000 | if (metrics->rbearing < width + pcm->rbearing) | |
1001 | metrics->rbearing = width + pcm->rbearing; | |
1002 | if (metrics->ascent < pcm->ascent) | |
1003 | metrics->ascent = pcm->ascent; | |
1004 | if (metrics->descent < pcm->descent) | |
1005 | metrics->descent = pcm->descent; | |
1006 | } | |
1007 | } | |
c2f5bfd6 KH |
1008 | width += pcm->width; |
1009 | } | |
1010 | if (metrics) | |
1011 | metrics->width = width; | |
1012 | return width; | |
1013 | } | |
1014 | ||
1015 | static int | |
a864ef14 PE |
1016 | xfont_draw (struct glyph_string *s, int from, int to, int x, int y, |
1017 | bool with_background) | |
c2f5bfd6 | 1018 | { |
f0c55750 | 1019 | XFontStruct *xfont = ((struct xfont_info *) s->font)->xfont; |
c2f5bfd6 | 1020 | int len = to - from; |
6e34c9c1 | 1021 | GC gc = s->gc; |
298fd5b1 | 1022 | int i; |
6e34c9c1 | 1023 | |
f0c55750 | 1024 | if (s->gc != s->face->gc) |
6e34c9c1 | 1025 | { |
4d7e6e51 | 1026 | block_input (); |
f0c55750 | 1027 | XSetFont (s->display, gc, xfont->fid); |
4d7e6e51 | 1028 | unblock_input (); |
6e34c9c1 | 1029 | } |
c2f5bfd6 KH |
1030 | |
1031 | if (xfont->min_byte1 == 0 && xfont->max_byte1 == 0) | |
1032 | { | |
c2f5bfd6 | 1033 | USE_SAFE_ALLOCA; |
98c6f1e3 | 1034 | char *str = SAFE_ALLOCA (len); |
c2f5bfd6 KH |
1035 | for (i = 0; i < len ; i++) |
1036 | str[i] = XCHAR2B_BYTE2 (s->char2b + from + i); | |
4d7e6e51 | 1037 | block_input (); |
a864ef14 | 1038 | if (with_background) |
298fd5b1 KH |
1039 | { |
1040 | if (s->padding_p) | |
1041 | for (i = 0; i < len; i++) | |
1042 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1043 | gc, x + i, y, str + i, 1); | |
1044 | else | |
1045 | XDrawImageString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1046 | gc, x, y, str, len); | |
1047 | } | |
c2f5bfd6 | 1048 | else |
298fd5b1 KH |
1049 | { |
1050 | if (s->padding_p) | |
1051 | for (i = 0; i < len; i++) | |
1052 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1053 | gc, x + i, y, str + i, 1); | |
1054 | else | |
1055 | XDrawString (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1056 | gc, x, y, str, len); | |
1057 | } | |
4d7e6e51 | 1058 | unblock_input (); |
c2f5bfd6 KH |
1059 | SAFE_FREE (); |
1060 | return s->nchars; | |
1061 | } | |
1062 | ||
4d7e6e51 | 1063 | block_input (); |
a864ef14 | 1064 | if (with_background) |
298fd5b1 KH |
1065 | { |
1066 | if (s->padding_p) | |
1067 | for (i = 0; i < len; i++) | |
1068 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1069 | gc, x + i, y, s->char2b + from + i, 1); | |
1070 | else | |
1071 | XDrawImageString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1072 | gc, x, y, s->char2b + from, len); | |
1073 | } | |
c2f5bfd6 | 1074 | else |
298fd5b1 KH |
1075 | { |
1076 | if (s->padding_p) | |
1077 | for (i = 0; i < len; i++) | |
1078 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1079 | gc, x + i, y, s->char2b + from + i, 1); | |
1080 | else | |
1081 | XDrawString16 (FRAME_X_DISPLAY (s->f), FRAME_X_WINDOW (s->f), | |
1082 | gc, x, y, s->char2b + from, len); | |
1083 | } | |
4d7e6e51 | 1084 | unblock_input (); |
c2f5bfd6 KH |
1085 | |
1086 | return len; | |
1087 | } | |
1088 | ||
f0c55750 | 1089 | static int |
a10c8269 | 1090 | xfont_check (struct frame *f, struct font *font) |
f0c55750 KH |
1091 | { |
1092 | struct xfont_info *xfont = (struct xfont_info *) font; | |
1093 | ||
1094 | return (FRAME_X_DISPLAY (f) == xfont->display ? 0 : -1); | |
1095 | } | |
1096 | ||
c2f5bfd6 KH |
1097 | \f |
1098 | void | |
971de7fb | 1099 | syms_of_xfont (void) |
c2f5bfd6 | 1100 | { |
5a189ffa | 1101 | staticpro (&xfont_scripts_cache); |
46306a17 SM |
1102 | { /* Here we rely on the fact that syms_of_xfont (via syms_of_font) |
1103 | is called fairly late, when QCtest and Qequal are known to be set. */ | |
1104 | Lisp_Object args[2]; | |
1105 | args[0] = QCtest; | |
1106 | args[1] = Qequal; | |
1107 | xfont_scripts_cache = Fmake_hash_table (2, args); | |
1108 | } | |
5a189ffa | 1109 | staticpro (&xfont_scratch_props); |
46306a17 | 1110 | xfont_scratch_props = Fmake_vector (make_number (8), Qnil); |
c2f5bfd6 KH |
1111 | xfont_driver.type = Qx; |
1112 | register_font_driver (&xfont_driver, NULL); | |
1113 | } |