Mercurial > hg > xemacs-beta
annotate src/fontcolor-xlike-inc.c @ 5606:7c383c5784ed
Zero-terminate when passing strings to parse_integer(), lread.c
src/ChangeLog addition:
2011-12-03 Aidan Kehoe <kehoea@parhasard.net>
* lread.c (read1):
Zero-terminate what we're giving to parse_integer(), it needs it
if it's calling bignum_set_string().
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Sat, 03 Dec 2011 15:55:14 +0000 |
parents | 308d34e9f07d |
children | 0bd991c31cd1 |
rev | line source |
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1 /* Common code between X and GTK -- fonts and colors. |
3659 | 2 Copyright (C) 1991-5, 1997 Free Software Foundation, Inc. |
3 Copyright (C) 1995 Sun Microsystems, Inc. | |
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4 Copyright (C) 1996, 2001, 2002, 2003, 2010 Ben Wing. |
3659 | 5 |
6 This file is part of XEmacs. | |
7 | |
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8 XEmacs is free software: you can redistribute it and/or modify it |
3659 | 9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation, either version 3 of the License, or (at your |
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11 option) any later version. |
3659 | 12 |
13 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 for more details. | |
17 | |
18 You should have received a copy of the GNU General Public License | |
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19 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
3659 | 20 |
21 /* Synched up with: Not in FSF. */ | |
22 | |
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23 /* Before including this file, you need to define either THIS_IS_X or |
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24 THIS_IS_GTK. */ |
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25 |
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26 /* See comment at top of console-xlike-inc.h for an explanation of |
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27 how this file works. */ |
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28 |
3659 | 29 /* Pango is ready for prime-time now, as far as I understand it. The GTK |
30 people should be using that. Oh well. (Aidan Kehoe, Sat Nov 4 12:41:12 | |
31 CET 2006) */ | |
32 | |
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33 #include "console-xlike-inc.h" |
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34 |
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35 #ifdef DEBUG_XEMACS |
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36 # define DEBUG_FONTS1(format, arg) \ |
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37 do { \ |
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38 if (debug_x_fonts) \ |
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39 debug_out (format, arg); \ |
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40 } while (0) |
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41 |
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42 # define DEBUG_FONTS2(format, arg1, arg2) \ |
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43 do { \ |
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44 if (debug_x_fonts) \ |
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45 debug_out (format, arg1, arg2); \ |
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46 } while (0) |
3659 | 47 |
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48 # define DEBUG_FONTS3(format, arg1, arg2, arg3) \ |
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49 do { \ |
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50 if (debug_x_fonts) \ |
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51 debug_out (format, arg1, arg2, arg3); \ |
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52 } while (0) |
3659 | 53 |
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54 # define DEBUG_FONTS4(format, arg1, arg2, arg3, arg4) \ |
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55 do { \ |
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56 if (debug_x_fonts) \ |
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57 debug_out (format, arg1, arg2, arg3, arg4); \ |
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58 } while (0) |
3659 | 59 |
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60 # define DEBUG_FONTS_LISP1(format, arg) \ |
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61 do { \ |
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62 if (debug_x_fonts) \ |
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63 debug_out_lisp (format, 1, arg); \ |
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64 } while (0) |
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65 |
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66 # define DEBUG_FONTS_LISP2(format, arg1, arg2) \ |
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67 do { \ |
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68 if (debug_x_fonts) \ |
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69 debug_out_lisp (format, 2, arg1, arg2); \ |
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70 } while (0) |
3659 | 71 |
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72 # define DEBUG_FONTS_LISP3(format, arg1, arg2, arg3) \ |
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73 do { \ |
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74 if (debug_x_fonts) \ |
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75 debug_out_lisp (format, 3, arg1, arg2, arg3); \ |
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76 } while (0) |
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77 |
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78 # define DEBUG_FONTS_LISP4(format, arg1, arg2, arg3, arg4) \ |
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79 do { \ |
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80 if (debug_x_fonts) \ |
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81 debug_out_lisp (format, 4, arg1, arg2, arg3, arg4); \ |
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82 } while (0) |
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83 #else /* not DEBUG_XEMACS */ |
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84 # define DEBUG_FONTS1(format, arg) |
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85 # define DEBUG_FONTS2(format, arg1, arg2) |
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86 # define DEBUG_FONTS3(format, arg1, arg2, arg3) |
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87 # define DEBUG_FONTS4(format, arg1, arg2, arg3, arg4) |
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88 # define DEBUG_FONTS_LISP1(format, arg) |
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89 # define DEBUG_FONTS_LISP2(format, arg1, arg2) |
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90 # define DEBUG_FONTS_LISP3(format, arg1, arg2, arg3) |
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91 # define DEBUG_FONTS_LISP4(format, arg1, arg2, arg3, arg4) |
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92 #endif |
3659 | 93 |
94 #ifdef MULE | |
95 | |
96 /* For some code it's reasonable to have only one copy and conditionalize | |
97 at run-time. For other code it isn't. */ | |
98 | |
99 static int | |
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100 count_hyphens (const Ibyte *str, Bytecount length, Ibyte **last_hyphen) |
3659 | 101 { |
102 int hyphen_count = 0; | |
103 const Ibyte *hyphening = str; | |
104 const Ibyte *new_hyphening; | |
105 | |
106 for (hyphen_count = 0; | |
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107 NULL != (new_hyphening = (Ibyte *) memchr ((const void *)hyphening, '-', length)); |
3659 | 108 hyphen_count++) |
109 { | |
110 ++new_hyphening; | |
111 length -= new_hyphening - hyphening; | |
112 hyphening = new_hyphening; | |
113 } | |
114 | |
115 if (NULL != last_hyphen) | |
116 { | |
117 *last_hyphen = (Ibyte *)hyphening; | |
118 } | |
119 | |
120 return hyphen_count; | |
121 } | |
122 | |
123 static int | |
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124 XFUN (font_spec_matches_charset) (struct device * USED_IF_XFT (d), |
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125 Lisp_Object charset, |
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126 const Ibyte *nonreloc, Lisp_Object reloc, |
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127 Bytecount offset, Bytecount length, |
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128 enum font_specifier_matchspec_stages stage) |
3659 | 129 { |
130 Lisp_Object registries = Qnil; | |
131 long i, registries_len; | |
132 const Ibyte *the_nonreloc; | |
133 Bytecount the_length; | |
134 | |
135 the_nonreloc = nonreloc; | |
136 the_length = length; | |
137 | |
138 if (!the_nonreloc) | |
139 the_nonreloc = XSTRING_DATA (reloc); | |
140 fixup_internal_substring (nonreloc, reloc, offset, &the_length); | |
141 the_nonreloc += offset; | |
142 | |
143 #ifdef USE_XFT | |
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144 if (stage == STAGE_FINAL) |
3659 | 145 { |
146 Display *dpy = DEVICE_X_DISPLAY (d); | |
147 Extbyte *extname; | |
148 XftFont *rf; | |
149 | |
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150 if (!NILP (reloc)) |
3659 | 151 { |
152 the_nonreloc = XSTRING_DATA (reloc); | |
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153 extname = LISP_STRING_TO_EXTERNAL (reloc, Qx_font_name_encoding); |
3659 | 154 rf = xft_open_font_by_name (dpy, extname); |
155 return 0; /* #### maybe this will compile and run ;) */ | |
156 /* Jesus, Stephen, what the fuck? */ | |
157 } | |
158 } | |
159 #endif | |
160 | |
161 /* Hmm, this smells bad. */ | |
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162 if (NILP (charset)) |
3659 | 163 return 1; |
164 | |
165 /* Hack! Short font names don't have the registry in them, | |
166 so we just assume the user knows what they're doing in the | |
167 case of ASCII. For other charsets, you gotta give the | |
168 long form; sorry buster. | |
169 #### FMH: this screws fontconfig/Xft? | |
170 STRATEGY: use fontconfig's ability to hack languages and character | |
171 sets (lang and charset properties). | |
172 #### Maybe we can use the fontconfig model to eliminate the difference | |
173 between faces and fonts? No - it looks like that would be an abuse | |
174 (fontconfig doesn't know about colors, although Xft does). | |
175 */ | |
176 if (EQ (charset, Vcharset_ascii) && | |
177 (!memchr (the_nonreloc, '*', the_length)) | |
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178 && (5 > (count_hyphens (the_nonreloc, the_length, NULL)))) |
3659 | 179 { |
180 return 1; | |
181 } | |
182 | |
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183 if (STAGE_FINAL == stage) |
3659 | 184 { |
185 registries = Qunicode_registries; | |
186 } | |
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187 else if (STAGE_INITIAL == stage) |
3659 | 188 { |
189 registries = XCHARSET_REGISTRIES (charset); | |
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190 if (NILP (registries)) |
3659 | 191 { |
192 return 0; | |
193 } | |
194 } | |
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195 else assert (0); |
3659 | 196 |
197 CHECK_VECTOR (registries); | |
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198 registries_len = XVECTOR_LENGTH (registries); |
3659 | 199 |
200 for (i = 0; i < registries_len; ++i) | |
201 { | |
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202 if (!(STRINGP (XVECTOR_DATA (registries)[i])) |
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203 || (XSTRING_LENGTH (XVECTOR_DATA (registries)[i]) > the_length)) |
3659 | 204 { |
205 continue; | |
206 } | |
207 | |
208 /* Check if the font spec ends in the registry specified. X11 says | |
209 this comparison is case insensitive: XLFD, section 3.11: | |
210 | |
211 "Alphabetic case distinctions are allowed but are for human | |
212 readability concerns only. Conforming X servers will perform | |
213 matching on font name query or open requests independent of case." */ | |
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214 if (0 == qxestrcasecmp (XSTRING_DATA (XVECTOR_DATA (registries)[i]), |
3659 | 215 the_nonreloc + (the_length - |
216 XSTRING_LENGTH | |
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217 (XVECTOR_DATA (registries)[i])))) |
3659 | 218 { |
219 return 1; | |
220 } | |
221 } | |
222 return 0; | |
223 } | |
224 | |
225 static Lisp_Object | |
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226 xlistfonts_checking_charset (Lisp_Object device, const Ibyte *xlfd, |
3659 | 227 Lisp_Object charset, |
228 enum font_specifier_matchspec_stages stage) | |
229 { | |
230 Extbyte **names; | |
231 Lisp_Object result = Qnil; | |
232 int count = 0, i; | |
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233 DECLARE_EISTRING (ei_single_result); |
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234 Extbyte *fontext; |
3659 | 235 |
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236 DEBUG_FONTS2 ("xlistfonts_checking_charset called, XLFD %s stage %s", |
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237 xlfd, stage == STAGE_INITIAL ? "initial" : "final"); |
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238 DEBUG_FONTS_LISP1 (" charset %s\n", charset); |
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239 fontext = ITEXT_TO_EXTERNAL (xlfd, Qx_font_name_encoding); |
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240 names = XListFonts (GET_XLIKE_DISPLAY (XDEVICE (device)), |
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241 fontext, MAX_FONT_COUNT, &count); |
3659 | 242 |
243 for (i = 0; i < count; ++i) | |
244 { | |
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245 eireset (ei_single_result); |
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246 eicpy_ext (ei_single_result, names[i], Qx_font_name_encoding); |
3659 | 247 |
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248 if (DEVMETH_OR_GIVEN (XDEVICE (device), font_spec_matches_charset, |
3659 | 249 (XDEVICE (device), charset, |
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250 eidata (ei_single_result), Qnil, 0, |
3659 | 251 -1, stage), 0)) |
252 { | |
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253 result = eimake_string (ei_single_result); |
3659 | 254 break; |
255 } | |
256 } | |
257 | |
258 if (names) | |
259 { | |
260 XFreeFontNames (names); | |
261 } | |
262 | |
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263 DEBUG_FONTS_LISP1 ("xlistfonts_checking_charset returns %s\n", result); |
3659 | 264 return result; |
265 } | |
266 | |
267 #ifdef USE_XFT | |
268 /* #### debug functions: find a better place for us */ | |
269 const char *FcResultToString (FcResult r); | |
270 const char * | |
271 FcResultToString (FcResult r) | |
272 { | |
273 static char buffer[256]; | |
274 switch (r) | |
275 { | |
276 case FcResultMatch: | |
277 return "FcResultMatch"; | |
278 case FcResultNoMatch: | |
279 return "FcResultNoMatch"; | |
280 case FcResultTypeMismatch: | |
281 return "FcResultTypeMismatch"; | |
282 case FcResultNoId: | |
283 return "FcResultNoId"; | |
284 default: | |
285 snprintf (buffer, 255, "FcResultUndocumentedValue (%d)", r); | |
286 return buffer; | |
287 } | |
288 } | |
289 | |
290 const char *FcTypeOfValueToString (FcValue v); | |
291 const char * | |
292 FcTypeOfValueToString (FcValue v) | |
293 { | |
294 static char buffer[256]; | |
295 switch (v.type) | |
296 { | |
297 case FcTypeMatrix: | |
298 return "FcTypeMatrix"; | |
299 case FcTypeString: | |
300 return "FcTypeString"; | |
301 case FcTypeVoid: | |
302 return "FcTypeVoid"; | |
303 case FcTypeDouble: | |
304 return "FcTypeDouble"; | |
305 case FcTypeInteger: | |
306 return "FcTypeInteger"; | |
307 case FcTypeBool: | |
308 return "FcTypeBool"; | |
309 case FcTypeCharSet: | |
310 return "FcTypeCharSet"; | |
311 case FcTypeLangSet: | |
312 return "FcTypeLangSet"; | |
313 /* #### There is no union member of this type, but there are void* and | |
314 FcPattern* members, as of fontconfig.h FC_VERSION 10002 */ | |
315 case FcTypeFTFace: | |
316 return "FcTypeFTFace"; | |
317 default: | |
318 snprintf (buffer, 255, "FcTypeUndocumentedType (%d)", v.type); | |
319 return buffer; | |
320 } | |
321 } | |
322 | |
323 static FcCharSet * | |
324 mule_to_fc_charset (Lisp_Object cs) | |
325 { | |
326 int ucode, i, j; | |
327 FcCharSet *fccs; | |
328 | |
329 CHECK_CHARSET (cs); | |
330 fccs = FcCharSetCreate (); | |
331 /* #### do we also need to deal with 94 vs. 96 charsets? | |
332 ie, how are SP and DEL treated in ASCII? non-graphic should return -1 */ | |
333 if (1 == XCHARSET_DIMENSION (cs)) | |
334 /* Unicode tables are indexed by offsets from ASCII SP, not by ASCII */ | |
335 for (i = 0; i < 96; i++) | |
336 { | |
337 ucode = ((int *) XCHARSET_TO_UNICODE_TABLE (cs))[i]; | |
338 if (ucode >= 0) | |
339 /* #### should check for allocation failure */ | |
340 FcCharSetAddChar (fccs, (FcChar32) ucode); | |
341 } | |
342 else if (2 == XCHARSET_DIMENSION (cs)) | |
343 /* Unicode tables are indexed by offsets from ASCII SP, not by ASCII */ | |
344 for (i = 0; i < 96; i++) | |
345 for (j = 0; j < 96; j++) | |
346 { | |
347 ucode = ((int **) XCHARSET_TO_UNICODE_TABLE (cs))[i][j]; | |
348 if (ucode >= 0) | |
349 /* #### should check for allocation failure */ | |
350 FcCharSetAddChar (fccs, (FcChar32) ucode); | |
351 } | |
352 else | |
353 { | |
354 FcCharSetDestroy (fccs); | |
355 fccs = NULL; | |
356 } | |
357 return fccs; | |
358 } | |
359 | |
360 struct charset_reporter { | |
361 Lisp_Object *charset; | |
362 /* This is a debug facility, require ASCII. */ | |
4932 | 363 const Ascbyte *language; /* ASCII, please */ |
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364 /* Technically this is FcChar8, but fsckin' GCC 4 bitches. |
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365 RFC 3066 is a combination of ISO 639 and ISO 3166. */ |
4932 | 366 const Ascbyte *rfc3066; /* ASCII, please */ |
3659 | 367 }; |
368 | |
369 static struct charset_reporter charset_table[] = | |
370 { | |
371 /* #### It's my branch, my favorite charsets get checked first! | |
372 That's a joke, Son. | |
373 Ie, I don't know what I'm doing, so my charsets first is as good as | |
374 any other arbitrary order. If you have a better idea, speak up! */ | |
375 { &Vcharset_ascii, "English", "en" }, | |
376 { &Vcharset_japanese_jisx0208, "Japanese", "ja" }, | |
377 { &Vcharset_japanese_jisx0212, "Japanese", "ja" }, | |
378 { &Vcharset_katakana_jisx0201, "Japanese", "ja" }, | |
379 { &Vcharset_latin_jisx0201, "Japanese", "ja" }, | |
380 { &Vcharset_japanese_jisx0208_1978, "Japanese", "ja" }, | |
381 { &Vcharset_greek_iso8859_7, "Greek", "el" }, | |
382 /* #### all the Chinese need checking | |
383 Damn the blood-sucking ISO anyway. */ | |
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384 { &Vcharset_chinese_gb2312, "simplified Chinese", "zh-cn" }, |
3659 | 385 { &Vcharset_korean_ksc5601, "Korean", "ko" }, |
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386 { &Vcharset_chinese_cns11643_1, "traditional Chinese", "zh-tw" }, |
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387 { &Vcharset_chinese_cns11643_2, "traditional Chinese", "zh-tw" }, |
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388 /* #### not obvious how to handle these |
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389 We could (for experimental purposes) make the last element into |
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390 an array of ISO 639 codes, and check for all of them. If a font |
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391 provides some but not others, warn. */ |
3659 | 392 { &Vcharset_latin_iso8859_1, NULL, NULL }, |
393 { &Vcharset_latin_iso8859_2, NULL, NULL }, | |
394 { &Vcharset_latin_iso8859_3, NULL, NULL }, | |
395 { &Vcharset_latin_iso8859_4, NULL, NULL }, | |
396 { &Vcharset_latin_iso8859_9, NULL, NULL }, | |
397 { &Vcharset_latin_iso8859_15, NULL, NULL }, | |
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398 { &Vcharset_thai_tis620, "Thai", "th" }, |
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399 /* We don't have an arabic charset. bidi issues, I guess? */ |
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400 /* { &Vcharset_arabic_iso8859_6, "Arabic", "ar" }, */ |
3659 | 401 { &Vcharset_hebrew_iso8859_8, "Hebrew", "he" }, |
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402 /* #### probably close enough for Ukraine? */ |
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403 { &Vcharset_cyrillic_iso8859_5, "Russian", "ru" }, |
3659 | 404 /* #### these probably are not quite right */ |
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405 { &Vcharset_chinese_big5_1, "traditional Chinese", "zh-tw" }, |
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406 { &Vcharset_chinese_big5_2, "traditional Chinese", "zh-tw" }, |
3659 | 407 { NULL, NULL, NULL } |
408 }; | |
409 | |
410 /* Choose appropriate font name for debug messages. | |
411 Use only in the top half of next function (enforced with #undef). */ | |
412 #define DECLARE_DEBUG_FONTNAME(__xemacs_name) \ | |
413 Eistring *__xemacs_name; \ | |
414 do \ | |
415 { \ | |
416 __xemacs_name = debug_xft > 2 ? eistr_fullname \ | |
417 : debug_xft > 1 ? eistr_longname \ | |
418 : eistr_shortname; \ | |
419 } while (0) | |
420 | |
421 static Lisp_Object | |
422 xft_find_charset_font (Lisp_Object font, Lisp_Object charset, | |
423 enum font_specifier_matchspec_stages stage) | |
424 { | |
425 const Extbyte *patternext; | |
426 Lisp_Object result = Qnil; | |
427 | |
428 /* #### with Xft need to handle second stage here -- sjt | |
429 Hm. Or maybe not. That would be cool. :-) */ | |
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430 if (stage == STAGE_FINAL) |
3659 | 431 return Qnil; |
432 | |
433 /* Fontconfig converts all FreeType names to UTF-8 before passing them | |
434 back to callers---see fcfreetype.c (FcFreeTypeQuery). | |
435 I don't believe this is documented. */ | |
436 | |
437 DEBUG_XFT1 (1, "confirming charset for font instance %s\n", | |
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438 XSTRING_DATA (font)); |
3659 | 439 |
440 /* #### this looks like a fair amount of work, but the basic design | |
441 has never been rethought, and it should be | |
442 | |
443 what really should happen here is that we use FcFontSort (FcFontList?) | |
444 to get a list of matching fonts, then pick the first (best) one that | |
445 gives language or repertoire coverage. | |
446 */ | |
447 | |
448 FcInit (); /* No-op if already initialized. | |
449 In fontconfig 2.3.2, this cannot return | |
450 failure, but that looks like a bug. We | |
451 check for it with FcGetCurrentConfig(), | |
452 which *can* fail. */ | |
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453 if (!FcConfigGetCurrent()) |
3659 | 454 stderr_out ("Failed fontconfig initialization\n"); |
455 else | |
456 { | |
457 FcPattern *fontxft; /* long-lived, freed at end of this block */ | |
458 FcResult fcresult; | |
459 FcConfig *fcc; | |
4932 | 460 const Ascbyte *lang = "en"; |
3659 | 461 FcCharSet *fccs = NULL; |
462 DECLARE_EISTRING (eistr_shortname); /* user-friendly nickname */ | |
463 DECLARE_EISTRING (eistr_longname); /* omit FC_LANG and FC_CHARSET */ | |
464 DECLARE_EISTRING (eistr_fullname); /* everything */ | |
465 | |
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466 patternext = LISP_STRING_TO_EXTERNAL (font, Qfc_font_name_encoding); |
3659 | 467 fcc = FcConfigGetCurrent (); |
468 | |
469 /* parse the name, do the substitutions, and match the font */ | |
470 | |
471 { | |
472 FcPattern *p = FcNameParse ((FcChar8 *) patternext); | |
473 PRINT_XFT_PATTERN (3, "FcNameParse'ed name is %s\n", p); | |
474 /* #### Next two return FcBool, but what does the return mean? */ | |
475 /* The order is correct according the fontconfig docs. */ | |
476 FcConfigSubstitute (fcc, p, FcMatchPattern); | |
477 PRINT_XFT_PATTERN (2, "FcConfigSubstitute'ed name is %s\n", p); | |
478 FcDefaultSubstitute (p); | |
479 PRINT_XFT_PATTERN (3, "FcDefaultSubstitute'ed name is %s\n", p); | |
480 /* #### check fcresult of following match? */ | |
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481 fcresult = FcResultMatch; |
3659 | 482 fontxft = FcFontMatch (fcc, p, &fcresult); |
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483 switch (fcresult) |
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484 { |
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485 /* case FcResultOutOfMemory: */ |
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486 case FcResultNoMatch: |
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487 case FcResultTypeMismatch: |
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488 case FcResultNoId: |
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489 break; |
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490 case FcResultMatch: |
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491 /* this prints the long fontconfig name */ |
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492 PRINT_XFT_PATTERN (1, "FcFontMatch'ed name is %s\n", fontxft); |
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493 break; |
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494 } |
3659 | 495 FcPatternDestroy (p); |
496 } | |
497 | |
498 /* heuristic to give reasonable-length names for debug reports | |
499 | |
500 I considered #ifdef SUPPORT_FULL_FONTCONFIG_NAME etc but that's | |
501 pointless. We're just going to remove this code once the font/ | |
502 face refactoring is done, but until then it could be very useful. | |
503 */ | |
504 { | |
505 FcPattern *p = FcFontRenderPrepare (fcc, fontxft, fontxft); | |
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506 Extbyte *name; |
3659 | 507 |
508 /* full name, including language coverage and repertoire */ | |
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509 name = (Extbyte *) FcNameUnparse (p); |
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510 eicpy_ext (eistr_fullname, |
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511 (name ? name : "NOT FOUND"), |
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512 Qfc_font_name_encoding); |
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513 if (name) free (name); |
3659 | 514 |
515 /* long name, omitting coverage and repertoire, plus a number | |
516 of rarely useful properties */ | |
517 FcPatternDel (p, FC_CHARSET); | |
518 FcPatternDel (p, FC_LANG); | |
3841 | 519 #ifdef FC_WIDTH |
3659 | 520 FcPatternDel (p, FC_WIDTH); |
3841 | 521 #endif |
3659 | 522 FcPatternDel (p, FC_SPACING); |
523 FcPatternDel (p, FC_HINTING); | |
524 FcPatternDel (p, FC_VERTICAL_LAYOUT); | |
525 FcPatternDel (p, FC_AUTOHINT); | |
526 FcPatternDel (p, FC_GLOBAL_ADVANCE); | |
527 FcPatternDel (p, FC_INDEX); | |
528 FcPatternDel (p, FC_SCALE); | |
529 FcPatternDel (p, FC_FONTVERSION); | |
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530 name = (Extbyte *) FcNameUnparse (p); |
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531 eicpy_ext (eistr_longname, |
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532 (name ? name : "NOT FOUND"), |
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533 Qfc_font_name_encoding); |
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534 if (name) free (name); |
3659 | 535 |
536 /* nickname, just family and size, but | |
537 "family" names usually have style, slant, and weight */ | |
538 FcPatternDel (p, FC_FOUNDRY); | |
539 FcPatternDel (p, FC_STYLE); | |
540 FcPatternDel (p, FC_SLANT); | |
541 FcPatternDel (p, FC_WEIGHT); | |
542 FcPatternDel (p, FC_PIXEL_SIZE); | |
543 FcPatternDel (p, FC_OUTLINE); | |
544 FcPatternDel (p, FC_SCALABLE); | |
545 FcPatternDel (p, FC_DPI); | |
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546 name = (Extbyte *) FcNameUnparse (p); |
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547 eicpy_ext (eistr_shortname, |
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548 (name ? name : "NOT FOUND"), |
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549 Qfc_font_name_encoding); |
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550 if (name) free (name); |
3659 | 551 |
552 FcPatternDestroy (p); | |
553 } | |
554 | |
555 /* The language approach may better in the long run, but we can't use | |
556 it based on Mule charsets; fontconfig doesn't provide a way to test | |
557 for unions of languages, etc. That will require support from the | |
558 text module. | |
559 | |
560 Optimization: cache the generated FcCharSet in the Mule charset. | |
561 Don't forget to destroy it if the Mule charset gets deallocated. */ | |
562 | |
563 { | |
564 /* This block possibly should be a function, but it generates | |
565 multiple values. I find the "pass an address to return the | |
566 value in" idiom opaque, so prefer a block. */ | |
567 struct charset_reporter *cr; | |
568 for (cr = charset_table; | |
569 cr->charset && !EQ (*(cr->charset), charset); | |
570 cr++) | |
571 ; | |
572 | |
573 if (cr->rfc3066) | |
574 { | |
575 DECLARE_DEBUG_FONTNAME (name); | |
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576 CHECKING_LANG (0, eidata (name), cr->language); |
4932 | 577 lang = cr->rfc3066; |
3659 | 578 } |
579 else if (cr->charset) | |
580 { | |
581 /* what the hey, build 'em on the fly */ | |
582 /* #### in the case of error this could return NULL! */ | |
583 fccs = mule_to_fc_charset (charset); | |
4932 | 584 /* #### Bad idea here */ |
585 lang = (const Ascbyte *) XSTRING_DATA (XSYMBOL (XCHARSET_NAME | |
586 (charset))->name); | |
3659 | 587 } |
588 else | |
589 { | |
590 /* OK, we fell off the end of the table */ | |
591 warn_when_safe_lispobj (intern ("xft"), intern ("alert"), | |
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592 list2 (build_ascstring ("unchecked charset"), |
3659 | 593 charset)); |
594 /* default to "en" | |
595 #### THIS IS WRONG, WRONG, WRONG!! | |
596 It is why we never fall through to XLFD-checking. */ | |
597 } | |
598 | |
4932 | 599 ASSERT_ASCTEXT_ASCII (lang); |
3659 | 600 |
601 if (fccs) | |
602 { | |
603 /* check for character set coverage */ | |
604 int i = 0; | |
605 FcCharSet *v; | |
606 FcResult r = FcPatternGetCharSet (fontxft, FC_CHARSET, i, &v); | |
607 | |
608 if (r == FcResultTypeMismatch) | |
609 { | |
610 DEBUG_XFT0 (0, "Unexpected type return in charset value\n"); | |
611 result = Qnil; | |
612 } | |
613 else if (r == FcResultMatch && FcCharSetIsSubset (fccs, v)) | |
614 { | |
615 /* The full pattern with the bitmap coverage is massively | |
616 unwieldy, but the shorter names are just *wrong*. We | |
617 should have the full thing internally as truename, and | |
618 filter stuff the client doesn't want to see on output. | |
619 Should we just store it into the truename right here? */ | |
620 DECLARE_DEBUG_FONTNAME (name); | |
621 DEBUG_XFT2 (0, "Xft font %s supports %s\n", | |
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622 eidata (name), lang); |
3659 | 623 #ifdef RETURN_LONG_FONTCONFIG_NAMES |
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624 result = eimake_string (eistr_fullname); |
3659 | 625 #else |
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626 result = eimake_string (eistr_longname); |
3659 | 627 #endif |
628 } | |
629 else | |
630 { | |
631 DECLARE_DEBUG_FONTNAME (name); | |
632 DEBUG_XFT2 (0, "Xft font %s doesn't support %s\n", | |
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633 eidata (name), lang); |
3659 | 634 result = Qnil; |
635 } | |
636 | |
637 /* clean up */ | |
638 FcCharSetDestroy (fccs); | |
639 } | |
640 else | |
641 { | |
642 /* check for language coverage */ | |
643 int i = 0; | |
644 FcValue v; | |
645 /* the main event */ | |
646 FcResult r = FcPatternGet (fontxft, FC_LANG, i, &v); | |
647 | |
648 if (r == FcResultMatch) | |
649 { | |
650 if (v.type != FcTypeLangSet) /* excessive paranoia */ | |
651 { | |
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652 ASSERT_ASCTEXT_ASCII (FcTypeOfValueToString (v)); |
3659 | 653 /* Urk! Fall back and punt to core font. */ |
654 DEBUG_XFT1 (0, "Unexpected type of lang value (%s)\n", | |
655 FcTypeOfValueToString (v)); | |
656 result = Qnil; | |
657 } | |
4932 | 658 else if (FcLangSetHasLang (v.u.l, (FcChar8 *) lang) |
659 != FcLangDifferentLang) | |
3659 | 660 { |
661 DECLARE_DEBUG_FONTNAME (name); | |
662 DEBUG_XFT2 (0, "Xft font %s supports %s\n", | |
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663 eidata (name), lang); |
3659 | 664 #ifdef RETURN_LONG_FONTCONFIG_NAMES |
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665 result = eimake_string (eistr_fullname); |
3659 | 666 #else |
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667 result = eimake_string (eistr_longname); |
3659 | 668 #endif |
669 } | |
670 else | |
671 { | |
672 DECLARE_DEBUG_FONTNAME (name); | |
673 DEBUG_XFT2 (0, "Xft font %s doesn't support %s\n", | |
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674 eidata (name), lang); |
3659 | 675 result = Qnil; |
676 } | |
677 } | |
678 else | |
679 { | |
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680 ASSERT_ASCTEXT_ASCII (FcResultToString (r)); |
3659 | 681 DEBUG_XFT1 (0, "Getting lang: unexpected result=%s\n", |
682 FcResultToString (r)); | |
683 result = Qnil; | |
684 } | |
685 } | |
686 | |
687 /* clean up and maybe return */ | |
688 FcPatternDestroy (fontxft); | |
689 if (!UNBOUNDP (result)) | |
690 return result; | |
691 } | |
692 } | |
693 return Qnil; | |
694 } | |
695 #undef DECLARE_DEBUG_FONTNAME | |
696 | |
697 #endif /* USE_XFT */ | |
698 | |
699 /* find a font spec that matches font spec FONT and also matches | |
700 (the registry of) CHARSET. */ | |
701 static Lisp_Object | |
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702 XFUN (find_charset_font) (Lisp_Object device, Lisp_Object font, |
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703 Lisp_Object charset, |
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704 enum font_specifier_matchspec_stages stage) |
3659 | 705 { |
706 Lisp_Object result = Qnil, registries = Qnil; | |
707 int j, hyphen_count, registries_len = 0; | |
708 Ibyte *hyphening, *new_hyphening; | |
709 Bytecount xlfd_length; | |
710 | |
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711 DECLARE_EISTRING (ei_xlfd_without_registry); |
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712 DECLARE_EISTRING (ei_xlfd); |
3659 | 713 |
714 #ifdef USE_XFT | |
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715 result = xft_find_charset_font (font, charset, stage); |
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716 if (!NILP (result)) |
3659 | 717 { |
718 return result; | |
719 } | |
720 #endif | |
721 | |
722 switch (stage) | |
723 { | |
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changeset
|
724 case STAGE_INITIAL: |
3659 | 725 { |
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726 if (!(NILP (XCHARSET_REGISTRIES (charset))) |
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727 && VECTORP (XCHARSET_REGISTRIES (charset))) |
3659 | 728 { |
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729 registries_len = XVECTOR_LENGTH (XCHARSET_REGISTRIES (charset)); |
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730 registries = XCHARSET_REGISTRIES (charset); |
3659 | 731 } |
732 break; | |
733 } | |
5015
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|
734 case STAGE_FINAL: |
3659 | 735 { |
736 registries_len = 1; | |
737 registries = Qunicode_registries; | |
738 break; | |
739 } | |
740 default: | |
741 { | |
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|
742 assert (0); |
3659 | 743 break; |
744 } | |
745 } | |
746 | |
5189
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747 eicpy_lstr (ei_xlfd, font); |
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|
748 hyphening = eidata (ei_xlfd); |
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749 xlfd_length = eilen (ei_xlfd); |
3659 | 750 |
751 /* Count the hyphens in the string, moving new_hyphening to just after the | |
752 last one. */ | |
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753 hyphen_count = count_hyphens (hyphening, xlfd_length, &new_hyphening); |
3659 | 754 |
755 if (0 == registries_len || (5 > hyphen_count && | |
756 !(1 == xlfd_length && '*' == *hyphening))) | |
757 { | |
758 /* No proper XLFD specified, or we can't modify the pattern to change | |
759 the registry and encoding to match what we want, or we have no | |
760 information on the registry needed. */ | |
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761 result = xlistfonts_checking_charset (device, eidata (ei_xlfd), |
3659 | 762 charset, stage); |
763 /* No need to loop through the available registries; return | |
764 immediately. */ | |
765 return result; | |
766 } | |
767 else if (1 == xlfd_length && '*' == *hyphening) | |
768 { | |
769 /* It's a single asterisk. We can add the registry directly to the | |
770 end. */ | |
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|
771 eicpy_ch (ei_xlfd_without_registry, '*'); |
3659 | 772 } |
773 else | |
774 { | |
775 /* It's a fully-specified XLFD. Work out where the registry and | |
776 encoding are, and initialise ei_xlfd_without_registry to the string | |
777 without them. */ | |
778 | |
779 /* count_hyphens has set new_hyphening to just after the last | |
780 hyphen. Move back to just after the hyphen before it. */ | |
781 | |
782 for (new_hyphening -= 2; new_hyphening > hyphening | |
783 && '-' != *new_hyphening; --new_hyphening) | |
784 ; | |
785 ++new_hyphening; | |
786 | |
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|
787 eicpy_ei (ei_xlfd_without_registry, ei_xlfd); |
3659 | 788 |
789 /* Manipulate ei_xlfd_without_registry, using the information about | |
790 ei_xlfd, to which it's identical. */ | |
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791 eidel (ei_xlfd_without_registry, new_hyphening - hyphening, -1, |
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792 eilen (ei_xlfd) - (new_hyphening - hyphening), -1); |
3659 | 793 |
794 } | |
795 | |
796 /* Now, loop through the registries and encodings defined for this | |
797 charset, doing an XListFonts each time with the pattern modified to | |
798 specify the regisry and encoding. This avoids huge amounts of IPC and | |
799 duplicated searching; now we use the searching the X server was doing | |
800 anyway, where before the X server did its search, transferred huge | |
801 amounts of data, and then we proceeded to do a regexp search on that | |
802 data. */ | |
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803 for (j = 0; j < registries_len && NILP (result); ++j) |
3659 | 804 { |
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805 eireset (ei_xlfd); |
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806 eicpy_ei (ei_xlfd, ei_xlfd_without_registry); |
3659 | 807 |
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808 eicat_lstr (ei_xlfd, XVECTOR_DATA (registries)[j]); |
3659 | 809 |
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810 result = xlistfonts_checking_charset (device, eidata (ei_xlfd), |
3659 | 811 charset, stage); |
812 } | |
813 | |
3676 | 814 /* In the event that the charset is ASCII and we haven't matched |
815 anything up to now, even with a pattern of "*", add "iso8859-1" | |
816 to the charset's registry and try again. Not returning a result | |
817 for ASCII means our frame geometry calculations are | |
818 inconsistent, and that we may crash. */ | |
819 | |
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820 if (1 == xlfd_length && EQ (charset, Vcharset_ascii) && NILP (result) |
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821 && ('*' == eigetch (ei_xlfd_without_registry, 0))) |
3676 | 822 |
823 { | |
824 int have_latin1 = 0; | |
825 | |
826 /* Set this to, for example, is08859-1 if you want to see the | |
827 error behaviour. */ | |
828 | |
829 #define FALLBACK_ASCII_REGISTRY "iso8859-1" | |
830 | |
831 for (j = 0; j < registries_len; ++j) | |
832 { | |
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833 if (0 == qxestrcasecmp (XSTRING_DATA (XVECTOR_DATA (registries)[j]), |
4124 | 834 (Ibyte *) FALLBACK_ASCII_REGISTRY)) |
3676 | 835 { |
836 have_latin1 = 1; | |
837 break; | |
838 } | |
839 } | |
840 | |
841 if (!have_latin1) | |
842 { | |
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843 Lisp_Object new_registries = make_vector (registries_len + 1, Qnil); |
3676 | 844 |
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845 XVECTOR_DATA (new_registries)[0] |
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846 = build_ascstring (FALLBACK_ASCII_REGISTRY); |
3676 | 847 |
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848 memcpy (XVECTOR_DATA (new_registries) + 1, |
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849 XVECTOR_DATA (registries), |
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850 sizeof XVECTOR_DATA (registries)[0] * |
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851 XVECTOR_LENGTH (registries)); |
3676 | 852 |
853 /* Calling set_charset_registries instead of overwriting the | |
854 value directly, to allow the charset font caches to be | |
855 invalidated and a change to the default face to be | |
856 noted. */ | |
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857 set_charset_registries (charset, new_registries); |
3676 | 858 |
3680 | 859 warn_when_safe (Qface, Qwarning, |
860 "Your ASCII charset registries contain nothing " | |
861 "sensible. Adding `" FALLBACK_ASCII_REGISTRY "'."); | |
862 | |
3676 | 863 /* And recurse. */ |
864 result = | |
865 DEVMETH_OR_GIVEN (XDEVICE (device), find_charset_font, | |
866 (device, font, charset, stage), | |
867 result); | |
868 } | |
869 else | |
870 { | |
871 DECLARE_EISTRING (ei_connection_name); | |
872 | |
873 /* We preserve a copy of the connection name for the error message | |
874 after the device is deleted. */ | |
875 eicpy_lstr (ei_connection_name, | |
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876 DEVICE_CONNECTION (XDEVICE (device))); |
3676 | 877 |
878 stderr_out ("Cannot find a font for ASCII, deleting device on %s\n", | |
879 eidata (ei_connection_name)); | |
880 | |
881 io_error_delete_device (device); | |
882 | |
883 /* Do a normal warning in the event that we have other, non-X | |
884 frames available. (If we don't, io_error_delete_device will | |
885 have exited.) */ | |
886 warn_when_safe | |
887 (Qface, Qerror, | |
888 "Cannot find a font for ASCII, deleting device on %s.\n" | |
889 "\n" | |
890 "Your X server fonts appear to be inconsistent; fix them, or\n" | |
891 "the next frame you create on that DISPLAY will crash this\n" | |
892 "XEmacs. At a minimum, provide one font with an XLFD ending\n" | |
893 "in `" FALLBACK_ASCII_REGISTRY "', so we can work out what size\n" | |
894 "a frame should be. ", | |
895 eidata (ei_connection_name)); | |
896 } | |
897 | |
898 } | |
899 | |
3659 | 900 /* This function used to return the font spec, in the case where a font |
901 didn't exist on the X server but it did match the charset. We're not | |
902 doing that any more, because none of the other platform code does, and | |
903 the old behaviour was badly-judged in other respects, so I don't trust | |
904 the original author to have had a good reason for it. */ | |
905 | |
906 return result; | |
907 } | |
908 | |
909 #endif /* MULE */ |