Mercurial > hg > xemacs-beta
annotate src/objects-xlike-inc.c @ 5015:d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-02-08 Ben Wing <ben@xemacs.org>
* faces.c:
* faces.c (face_property_matching_instance):
* faces.c (ensure_face_cachel_contains_charset):
* faces.h (FACE_FONT):
* lisp.h:
* lisp.h (enum font_specifier_matchspec_stages):
* objects-msw.c:
* objects-msw.c (mswindows_font_spec_matches_charset):
* objects-msw.c (mswindows_find_charset_font):
* objects-tty.c:
* objects-tty.c (tty_font_spec_matches_charset):
* objects-tty.c (tty_find_charset_font):
* objects-xlike-inc.c:
* objects-xlike-inc.c (XFUN):
* objects-xlike-inc.c (xft_find_charset_font):
* objects.c:
* objects.c (font_instantiate):
* objects.c (FROB):
* specifier.c:
* specifier.c (charset_matches_specifier_tag_set_p):
* specifier.c (call_charset_predicate):
* specifier.c (define_specifier_tag):
* specifier.c (Fdefine_specifier_tag):
* specifier.c (setup_charset_initial_specifier_tags):
* specifier.c (specifier_instance_from_inst_list):
* specifier.c (FROB):
* specifier.c (vars_of_specifier):
* specifier.h:
Rename the specifier-font-matching stages in preparation for
eliminating shadowed warnings, some other related fixes from
ben-unicode-internal.
1. Rename raw enums:
initial -> STAGE_INITIAL
final -> STAGE_FINAL
impossible -> NUM_MATCHSPEC_STAGES
2. Move `enum font_specifier_matchspec_stages' from
specifier.h to lisp.h.
3. Whitespace changes to match coding standards.
4. Eliminate unused second argument STAGE in charset predicates
that don't use it -- the code that calls the charset predicates
is now smart enough to supply the right number of arguments
automatically.
5. Add some long(ish) comments and authorial notices, esp. in
objects.c.
6. In specifier.c, change Vcharset_tag_lists from a vector over
leading bytes to a hash table over charsets. This change is
unnecessary currently but doesn't hurt and will be required
when we merge in Unicode-internal.
7. In specifier.c, extract out the code that calls charset predicates
into a function call_charset_predicate().
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Mon, 08 Feb 2010 16:51:25 -0600 |
| parents | 4aebb0131297 |
| children |
| rev | line source |
|---|---|
|
4908
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various fixes related to gtk, redisplay-xlike-inc.c
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parents:
4809
diff
changeset
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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. | |
|
5015
d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
Ben Wing <ben@xemacs.org>
parents:
4981
diff
changeset
|
4 Copyright (C) 1996, 2001, 2002, 2003, 2010 Ben Wing. |
| 3659 | 5 |
| 6 This file is part of XEmacs. | |
| 7 | |
| 8 XEmacs is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 10 Free Software Foundation; either version 2, or (at your option) any | |
| 11 later version. | |
| 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 | |
| 19 along with XEmacs; see the file COPYING. If not, write to | |
| 20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 21 Boston, MA 02111-1307, USA. */ | |
| 22 | |
| 23 /* Synched up with: Not in FSF. */ | |
| 24 | |
|
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25 /* Before including this file, you need to define either THIS_IS_X or |
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26 THIS_IS_GTK. */ |
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27 |
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28 /* See comment at top of console-xlike-inc.h for an explanation of |
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29 how this file works. */ |
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30 |
| 3659 | 31 /* Pango is ready for prime-time now, as far as I understand it. The GTK |
| 32 people should be using that. Oh well. (Aidan Kehoe, Sat Nov 4 12:41:12 | |
| 33 CET 2006) */ | |
| 34 | |
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35 #include "console-xlike-inc.h" |
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36 |
| 3659 | 37 #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901) |
| 38 | |
| 39 #ifdef DEBUG_XEMACS | |
| 40 # define DEBUG_OBJECTS(FORMAT, ...) \ | |
| 41 do { if (debug_x_objects) stderr_out(FORMAT, __VA_ARGS__); } while (0) | |
| 42 #else /* DEBUG_XEMACS */ | |
| 43 # define DEBUG_OBJECTS(format, ...) | |
| 44 #endif /* DEBUG_XEMACS */ | |
| 45 | |
| 46 #elif defined(__GNUC__) | |
| 47 | |
| 48 #ifdef DEBUG_XEMACS | |
| 49 # define DEBUG_OBJECTS(format, args...) \ | |
| 50 do { if (debug_x_objects) stderr_out(format, args ); } while (0) | |
| 51 #else /* DEBUG_XEMACS */ | |
| 52 # define DEBUG_OBJECTS(format, args...) | |
| 53 #endif /* DEBUG_XEMACS */ | |
| 54 | |
| 55 #else /* defined(__STDC_VERSION__) [...] */ | |
| 56 # define DEBUG_OBJECTS (void) | |
| 57 #endif | |
| 58 | |
| 59 #ifdef MULE | |
| 60 | |
| 61 /* For some code it's reasonable to have only one copy and conditionalize | |
| 62 at run-time. For other code it isn't. */ | |
| 63 | |
| 64 static int | |
| 65 count_hyphens(const Ibyte *str, Bytecount length, Ibyte **last_hyphen) | |
| 66 { | |
| 67 int hyphen_count = 0; | |
| 68 const Ibyte *hyphening = str; | |
| 69 const Ibyte *new_hyphening; | |
| 70 | |
| 71 for (hyphen_count = 0; | |
| 4124 | 72 NULL != (new_hyphening = (Ibyte *) memchr((const void *)hyphening, '-', length)); |
| 3659 | 73 hyphen_count++) |
| 74 { | |
| 75 ++new_hyphening; | |
| 76 length -= new_hyphening - hyphening; | |
| 77 hyphening = new_hyphening; | |
| 78 } | |
| 79 | |
| 80 if (NULL != last_hyphen) | |
| 81 { | |
| 82 *last_hyphen = (Ibyte *)hyphening; | |
| 83 } | |
| 84 | |
| 85 return hyphen_count; | |
| 86 } | |
| 87 | |
| 88 static int | |
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89 XFUN (font_spec_matches_charset) (struct device * USED_IF_XFT (d), |
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90 Lisp_Object charset, |
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91 const Ibyte *nonreloc, Lisp_Object reloc, |
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92 Bytecount offset, Bytecount length, |
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93 enum font_specifier_matchspec_stages stage) |
| 3659 | 94 { |
| 95 Lisp_Object registries = Qnil; | |
| 96 long i, registries_len; | |
| 97 const Ibyte *the_nonreloc; | |
| 98 Bytecount the_length; | |
| 99 | |
| 100 the_nonreloc = nonreloc; | |
| 101 the_length = length; | |
| 102 | |
| 103 if (!the_nonreloc) | |
| 104 the_nonreloc = XSTRING_DATA (reloc); | |
| 105 fixup_internal_substring (nonreloc, reloc, offset, &the_length); | |
| 106 the_nonreloc += offset; | |
| 107 | |
| 108 #ifdef USE_XFT | |
|
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d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
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parents:
4981
diff
changeset
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109 if (stage == STAGE_FINAL) |
| 3659 | 110 { |
| 111 Display *dpy = DEVICE_X_DISPLAY (d); | |
| 112 Extbyte *extname; | |
| 113 XftFont *rf; | |
| 114 const Ibyte *the_nonreloc; | |
| 115 | |
| 116 if (!NILP(reloc)) | |
| 117 { | |
| 118 the_nonreloc = XSTRING_DATA (reloc); | |
|
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119 extname = LISP_STRING_TO_EXTERNAL (reloc, Qx_font_name_encoding); |
| 3659 | 120 rf = xft_open_font_by_name (dpy, extname); |
| 121 return 0; /* #### maybe this will compile and run ;) */ | |
| 122 /* Jesus, Stephen, what the fuck? */ | |
| 123 } | |
| 124 } | |
| 125 #endif | |
| 126 | |
| 127 /* Hmm, this smells bad. */ | |
|
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Merge an old patch of Ben's, involving font instantiation and charsets.
Aidan Kehoe <kehoea@parhasard.net>
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128 if (NILP (charset)) |
| 3659 | 129 return 1; |
| 130 | |
| 131 /* Hack! Short font names don't have the registry in them, | |
| 132 so we just assume the user knows what they're doing in the | |
| 133 case of ASCII. For other charsets, you gotta give the | |
| 134 long form; sorry buster. | |
| 135 #### FMH: this screws fontconfig/Xft? | |
| 136 STRATEGY: use fontconfig's ability to hack languages and character | |
| 137 sets (lang and charset properties). | |
| 138 #### Maybe we can use the fontconfig model to eliminate the difference | |
| 139 between faces and fonts? No - it looks like that would be an abuse | |
| 140 (fontconfig doesn't know about colors, although Xft does). | |
| 141 */ | |
| 142 if (EQ (charset, Vcharset_ascii) && | |
| 143 (!memchr (the_nonreloc, '*', the_length)) | |
| 144 && (5 > (count_hyphens(the_nonreloc, the_length, NULL)))) | |
| 145 { | |
| 146 return 1; | |
| 147 } | |
| 148 | |
|
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d95c102a96d3
cleanups for specifier font stages, from ben-unicode-internal (preparation for eliminating shadowed warnings)
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parents:
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diff
changeset
|
149 if (STAGE_FINAL == stage) |
| 3659 | 150 { |
| 151 registries = Qunicode_registries; | |
| 152 } | |
|
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parents:
4981
diff
changeset
|
153 else if (STAGE_INITIAL == stage) |
| 3659 | 154 { |
| 155 registries = XCHARSET_REGISTRIES (charset); | |
| 156 if (NILP(registries)) | |
| 157 { | |
| 158 return 0; | |
| 159 } | |
| 160 } | |
| 161 else assert(0); | |
| 162 | |
| 163 CHECK_VECTOR (registries); | |
| 164 registries_len = XVECTOR_LENGTH(registries); | |
| 165 | |
| 166 for (i = 0; i < registries_len; ++i) | |
| 167 { | |
| 168 if (!(STRINGP(XVECTOR_DATA(registries)[i])) | |
| 169 || (XSTRING_LENGTH(XVECTOR_DATA(registries)[i]) > the_length)) | |
| 170 { | |
| 171 continue; | |
| 172 } | |
| 173 | |
| 174 /* Check if the font spec ends in the registry specified. X11 says | |
| 175 this comparison is case insensitive: XLFD, section 3.11: | |
| 176 | |
| 177 "Alphabetic case distinctions are allowed but are for human | |
| 178 readability concerns only. Conforming X servers will perform | |
| 179 matching on font name query or open requests independent of case." */ | |
| 180 if (0 == qxestrcasecmp(XSTRING_DATA(XVECTOR_DATA(registries)[i]), | |
| 181 the_nonreloc + (the_length - | |
| 182 XSTRING_LENGTH | |
| 183 (XVECTOR_DATA(registries)[i])))) | |
| 184 { | |
| 185 return 1; | |
| 186 } | |
| 187 } | |
| 188 return 0; | |
| 189 } | |
| 190 | |
| 191 static Lisp_Object | |
| 192 xlistfonts_checking_charset (Lisp_Object device, const Extbyte *xlfd, | |
| 193 Lisp_Object charset, | |
| 194 enum font_specifier_matchspec_stages stage) | |
| 195 { | |
| 196 Extbyte **names; | |
| 197 Lisp_Object result = Qnil; | |
| 198 int count = 0, i; | |
| 199 DECLARE_EISTRING(ei_single_result); | |
| 200 | |
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201 names = XListFonts (GET_XLIKE_DISPLAY (XDEVICE (device)), |
| 3659 | 202 xlfd, MAX_FONT_COUNT, &count); |
| 203 | |
| 204 for (i = 0; i < count; ++i) | |
| 205 { | |
| 206 eireset(ei_single_result); | |
| 207 eicpy_ext(ei_single_result, names[i], Qx_font_name_encoding); | |
| 208 | |
| 209 if (DEVMETH_OR_GIVEN(XDEVICE (device), font_spec_matches_charset, | |
| 210 (XDEVICE (device), charset, | |
| 211 eidata(ei_single_result), Qnil, 0, | |
| 212 -1, stage), 0)) | |
| 213 { | |
| 214 result = eimake_string(ei_single_result); | |
| 215 DEBUG_OBJECTS ("in xlistfonts_checking_charset, returning %s\n", | |
| 216 eidata(ei_single_result)); | |
| 217 break; | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 if (names) | |
| 222 { | |
| 223 XFreeFontNames (names); | |
| 224 } | |
| 225 | |
| 226 return result; | |
| 227 } | |
| 228 | |
| 229 #ifdef USE_XFT | |
| 230 /* #### debug functions: find a better place for us */ | |
| 231 const char *FcResultToString (FcResult r); | |
| 232 const char * | |
| 233 FcResultToString (FcResult r) | |
| 234 { | |
| 235 static char buffer[256]; | |
| 236 switch (r) | |
| 237 { | |
| 238 case FcResultMatch: | |
| 239 return "FcResultMatch"; | |
| 240 case FcResultNoMatch: | |
| 241 return "FcResultNoMatch"; | |
| 242 case FcResultTypeMismatch: | |
| 243 return "FcResultTypeMismatch"; | |
| 244 case FcResultNoId: | |
| 245 return "FcResultNoId"; | |
| 246 default: | |
| 247 snprintf (buffer, 255, "FcResultUndocumentedValue (%d)", r); | |
| 248 return buffer; | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 const char *FcTypeOfValueToString (FcValue v); | |
| 253 const char * | |
| 254 FcTypeOfValueToString (FcValue v) | |
| 255 { | |
| 256 static char buffer[256]; | |
| 257 switch (v.type) | |
| 258 { | |
| 259 case FcTypeMatrix: | |
| 260 return "FcTypeMatrix"; | |
| 261 case FcTypeString: | |
| 262 return "FcTypeString"; | |
| 263 case FcTypeVoid: | |
| 264 return "FcTypeVoid"; | |
| 265 case FcTypeDouble: | |
| 266 return "FcTypeDouble"; | |
| 267 case FcTypeInteger: | |
| 268 return "FcTypeInteger"; | |
| 269 case FcTypeBool: | |
| 270 return "FcTypeBool"; | |
| 271 case FcTypeCharSet: | |
| 272 return "FcTypeCharSet"; | |
| 273 case FcTypeLangSet: | |
| 274 return "FcTypeLangSet"; | |
| 275 /* #### There is no union member of this type, but there are void* and | |
| 276 FcPattern* members, as of fontconfig.h FC_VERSION 10002 */ | |
| 277 case FcTypeFTFace: | |
| 278 return "FcTypeFTFace"; | |
| 279 default: | |
| 280 snprintf (buffer, 255, "FcTypeUndocumentedType (%d)", v.type); | |
| 281 return buffer; | |
| 282 } | |
| 283 } | |
| 284 | |
| 285 static FcCharSet * | |
| 286 mule_to_fc_charset (Lisp_Object cs) | |
| 287 { | |
| 288 int ucode, i, j; | |
| 289 FcCharSet *fccs; | |
| 290 | |
| 291 CHECK_CHARSET (cs); | |
| 292 fccs = FcCharSetCreate (); | |
| 293 /* #### do we also need to deal with 94 vs. 96 charsets? | |
| 294 ie, how are SP and DEL treated in ASCII? non-graphic should return -1 */ | |
| 295 if (1 == XCHARSET_DIMENSION (cs)) | |
| 296 /* Unicode tables are indexed by offsets from ASCII SP, not by ASCII */ | |
| 297 for (i = 0; i < 96; i++) | |
| 298 { | |
| 299 ucode = ((int *) XCHARSET_TO_UNICODE_TABLE (cs))[i]; | |
| 300 if (ucode >= 0) | |
| 301 /* #### should check for allocation failure */ | |
| 302 FcCharSetAddChar (fccs, (FcChar32) ucode); | |
| 303 } | |
| 304 else if (2 == XCHARSET_DIMENSION (cs)) | |
| 305 /* Unicode tables are indexed by offsets from ASCII SP, not by ASCII */ | |
| 306 for (i = 0; i < 96; i++) | |
| 307 for (j = 0; j < 96; j++) | |
| 308 { | |
| 309 ucode = ((int **) XCHARSET_TO_UNICODE_TABLE (cs))[i][j]; | |
| 310 if (ucode >= 0) | |
| 311 /* #### should check for allocation failure */ | |
| 312 FcCharSetAddChar (fccs, (FcChar32) ucode); | |
| 313 } | |
| 314 else | |
| 315 { | |
| 316 FcCharSetDestroy (fccs); | |
| 317 fccs = NULL; | |
| 318 } | |
| 319 return fccs; | |
| 320 } | |
| 321 | |
| 322 struct charset_reporter { | |
| 323 Lisp_Object *charset; | |
| 324 /* This is a debug facility, require ASCII. */ | |
| 4932 | 325 const Ascbyte *language; /* ASCII, please */ |
|
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326 /* Technically this is FcChar8, but fsckin' GCC 4 bitches. |
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327 RFC 3066 is a combination of ISO 639 and ISO 3166. */ |
| 4932 | 328 const Ascbyte *rfc3066; /* ASCII, please */ |
| 3659 | 329 }; |
| 330 | |
| 331 static struct charset_reporter charset_table[] = | |
| 332 { | |
| 333 /* #### It's my branch, my favorite charsets get checked first! | |
| 334 That's a joke, Son. | |
| 335 Ie, I don't know what I'm doing, so my charsets first is as good as | |
| 336 any other arbitrary order. If you have a better idea, speak up! */ | |
| 337 { &Vcharset_ascii, "English", "en" }, | |
| 338 { &Vcharset_japanese_jisx0208, "Japanese", "ja" }, | |
| 339 { &Vcharset_japanese_jisx0212, "Japanese", "ja" }, | |
| 340 { &Vcharset_katakana_jisx0201, "Japanese", "ja" }, | |
| 341 { &Vcharset_latin_jisx0201, "Japanese", "ja" }, | |
| 342 { &Vcharset_japanese_jisx0208_1978, "Japanese", "ja" }, | |
| 343 { &Vcharset_greek_iso8859_7, "Greek", "el" }, | |
| 344 /* #### all the Chinese need checking | |
| 345 Damn the blood-sucking ISO anyway. */ | |
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346 { &Vcharset_chinese_gb2312, "simplified Chinese", "zh-cn" }, |
| 3659 | 347 { &Vcharset_korean_ksc5601, "Korean", "ko" }, |
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348 { &Vcharset_chinese_cns11643_1, "traditional Chinese", "zh-tw" }, |
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349 { &Vcharset_chinese_cns11643_2, "traditional Chinese", "zh-tw" }, |
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350 /* #### not obvious how to handle these |
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351 We could (for experimental purposes) make the last element into |
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352 an array of ISO 639 codes, and check for all of them. If a font |
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353 provides some but not others, warn. */ |
| 3659 | 354 { &Vcharset_latin_iso8859_1, NULL, NULL }, |
| 355 { &Vcharset_latin_iso8859_2, NULL, NULL }, | |
| 356 { &Vcharset_latin_iso8859_3, NULL, NULL }, | |
| 357 { &Vcharset_latin_iso8859_4, NULL, NULL }, | |
| 358 { &Vcharset_latin_iso8859_9, NULL, NULL }, | |
| 359 { &Vcharset_latin_iso8859_15, NULL, NULL }, | |
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360 { &Vcharset_thai_tis620, "Thai", "th" }, |
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361 /* We don't have an arabic charset. bidi issues, I guess? */ |
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362 /* { &Vcharset_arabic_iso8859_6, "Arabic", "ar" }, */ |
| 3659 | 363 { &Vcharset_hebrew_iso8859_8, "Hebrew", "he" }, |
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364 /* #### probably close enough for Ukraine? */ |
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365 { &Vcharset_cyrillic_iso8859_5, "Russian", "ru" }, |
| 3659 | 366 /* #### these probably are not quite right */ |
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367 { &Vcharset_chinese_big5_1, "traditional Chinese", "zh-tw" }, |
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368 { &Vcharset_chinese_big5_2, "traditional Chinese", "zh-tw" }, |
| 3659 | 369 { NULL, NULL, NULL } |
| 370 }; | |
| 371 | |
| 372 /* Choose appropriate font name for debug messages. | |
| 373 Use only in the top half of next function (enforced with #undef). */ | |
| 374 #define DECLARE_DEBUG_FONTNAME(__xemacs_name) \ | |
| 375 Eistring *__xemacs_name; \ | |
| 376 do \ | |
| 377 { \ | |
| 378 __xemacs_name = debug_xft > 2 ? eistr_fullname \ | |
| 379 : debug_xft > 1 ? eistr_longname \ | |
| 380 : eistr_shortname; \ | |
| 381 } while (0) | |
| 382 | |
| 383 static Lisp_Object | |
| 384 xft_find_charset_font (Lisp_Object font, Lisp_Object charset, | |
| 385 enum font_specifier_matchspec_stages stage) | |
| 386 { | |
| 387 const Extbyte *patternext; | |
| 388 Lisp_Object result = Qnil; | |
| 389 | |
| 390 /* #### with Xft need to handle second stage here -- sjt | |
| 391 Hm. Or maybe not. That would be cool. :-) */ | |
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392 if (stage == STAGE_FINAL) |
| 3659 | 393 return Qnil; |
| 394 | |
| 395 /* Fontconfig converts all FreeType names to UTF-8 before passing them | |
| 396 back to callers---see fcfreetype.c (FcFreeTypeQuery). | |
| 397 I don't believe this is documented. */ | |
| 398 | |
| 399 DEBUG_XFT1 (1, "confirming charset for font instance %s\n", | |
| 400 XSTRING_DATA(font)); | |
| 401 | |
| 402 /* #### this looks like a fair amount of work, but the basic design | |
| 403 has never been rethought, and it should be | |
| 404 | |
| 405 what really should happen here is that we use FcFontSort (FcFontList?) | |
| 406 to get a list of matching fonts, then pick the first (best) one that | |
| 407 gives language or repertoire coverage. | |
| 408 */ | |
| 409 | |
| 410 FcInit (); /* No-op if already initialized. | |
| 411 In fontconfig 2.3.2, this cannot return | |
| 412 failure, but that looks like a bug. We | |
| 413 check for it with FcGetCurrentConfig(), | |
| 414 which *can* fail. */ | |
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415 if (!FcConfigGetCurrent()) |
| 3659 | 416 stderr_out ("Failed fontconfig initialization\n"); |
| 417 else | |
| 418 { | |
| 419 FcPattern *fontxft; /* long-lived, freed at end of this block */ | |
| 420 FcResult fcresult; | |
| 421 FcConfig *fcc; | |
| 4932 | 422 const Ascbyte *lang = "en"; |
| 3659 | 423 FcCharSet *fccs = NULL; |
| 424 DECLARE_EISTRING (eistr_shortname); /* user-friendly nickname */ | |
| 425 DECLARE_EISTRING (eistr_longname); /* omit FC_LANG and FC_CHARSET */ | |
| 426 DECLARE_EISTRING (eistr_fullname); /* everything */ | |
| 427 | |
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428 patternext = LISP_STRING_TO_EXTERNAL (font, Qfc_font_name_encoding); |
| 3659 | 429 fcc = FcConfigGetCurrent (); |
| 430 | |
| 431 /* parse the name, do the substitutions, and match the font */ | |
| 432 | |
| 433 { | |
| 434 FcPattern *p = FcNameParse ((FcChar8 *) patternext); | |
| 435 PRINT_XFT_PATTERN (3, "FcNameParse'ed name is %s\n", p); | |
| 436 /* #### Next two return FcBool, but what does the return mean? */ | |
| 437 /* The order is correct according the fontconfig docs. */ | |
| 438 FcConfigSubstitute (fcc, p, FcMatchPattern); | |
| 439 PRINT_XFT_PATTERN (2, "FcConfigSubstitute'ed name is %s\n", p); | |
| 440 FcDefaultSubstitute (p); | |
| 441 PRINT_XFT_PATTERN (3, "FcDefaultSubstitute'ed name is %s\n", p); | |
| 442 /* #### check fcresult of following match? */ | |
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443 fcresult = FcResultMatch; |
| 3659 | 444 fontxft = FcFontMatch (fcc, p, &fcresult); |
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445 switch (fcresult) |
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446 { |
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447 /* case FcResultOutOfMemory: */ |
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448 case FcResultNoMatch: |
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449 case FcResultTypeMismatch: |
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450 case FcResultNoId: |
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451 break; |
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452 case FcResultMatch: |
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453 /* this prints the long fontconfig name */ |
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454 PRINT_XFT_PATTERN (1, "FcFontMatch'ed name is %s\n", fontxft); |
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455 break; |
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456 } |
| 3659 | 457 FcPatternDestroy (p); |
| 458 } | |
| 459 | |
| 460 /* heuristic to give reasonable-length names for debug reports | |
| 461 | |
| 462 I considered #ifdef SUPPORT_FULL_FONTCONFIG_NAME etc but that's | |
| 463 pointless. We're just going to remove this code once the font/ | |
| 464 face refactoring is done, but until then it could be very useful. | |
| 465 */ | |
| 466 { | |
| 467 FcPattern *p = FcFontRenderPrepare (fcc, fontxft, fontxft); | |
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468 Extbyte *name; |
| 3659 | 469 |
| 470 /* full name, including language coverage and repertoire */ | |
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471 name = (Extbyte *) FcNameUnparse (p); |
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472 eicpy_ext (eistr_fullname, |
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473 (name ? name : "NOT FOUND"), |
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474 Qfc_font_name_encoding); |
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475 if (name) free (name); |
| 3659 | 476 |
| 477 /* long name, omitting coverage and repertoire, plus a number | |
| 478 of rarely useful properties */ | |
| 479 FcPatternDel (p, FC_CHARSET); | |
| 480 FcPatternDel (p, FC_LANG); | |
| 3841 | 481 #ifdef FC_WIDTH |
| 3659 | 482 FcPatternDel (p, FC_WIDTH); |
| 3841 | 483 #endif |
| 3659 | 484 FcPatternDel (p, FC_SPACING); |
| 485 FcPatternDel (p, FC_HINTING); | |
| 486 FcPatternDel (p, FC_VERTICAL_LAYOUT); | |
| 487 FcPatternDel (p, FC_AUTOHINT); | |
| 488 FcPatternDel (p, FC_GLOBAL_ADVANCE); | |
| 489 FcPatternDel (p, FC_INDEX); | |
| 490 FcPatternDel (p, FC_SCALE); | |
| 491 FcPatternDel (p, FC_FONTVERSION); | |
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492 name = (Extbyte *) FcNameUnparse (p); |
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493 eicpy_ext (eistr_longname, |
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494 (name ? name : "NOT FOUND"), |
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495 Qfc_font_name_encoding); |
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496 if (name) free (name); |
| 3659 | 497 |
| 498 /* nickname, just family and size, but | |
| 499 "family" names usually have style, slant, and weight */ | |
| 500 FcPatternDel (p, FC_FOUNDRY); | |
| 501 FcPatternDel (p, FC_STYLE); | |
| 502 FcPatternDel (p, FC_SLANT); | |
| 503 FcPatternDel (p, FC_WEIGHT); | |
| 504 FcPatternDel (p, FC_PIXEL_SIZE); | |
| 505 FcPatternDel (p, FC_OUTLINE); | |
| 506 FcPatternDel (p, FC_SCALABLE); | |
| 507 FcPatternDel (p, FC_DPI); | |
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508 name = (Extbyte *) FcNameUnparse (p); |
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509 eicpy_ext (eistr_shortname, |
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510 (name ? name : "NOT FOUND"), |
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511 Qfc_font_name_encoding); |
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512 if (name) free (name); |
| 3659 | 513 |
| 514 FcPatternDestroy (p); | |
| 515 } | |
| 516 | |
| 517 /* The language approach may better in the long run, but we can't use | |
| 518 it based on Mule charsets; fontconfig doesn't provide a way to test | |
| 519 for unions of languages, etc. That will require support from the | |
| 520 text module. | |
| 521 | |
| 522 Optimization: cache the generated FcCharSet in the Mule charset. | |
| 523 Don't forget to destroy it if the Mule charset gets deallocated. */ | |
| 524 | |
| 525 { | |
| 526 /* This block possibly should be a function, but it generates | |
| 527 multiple values. I find the "pass an address to return the | |
| 528 value in" idiom opaque, so prefer a block. */ | |
| 529 struct charset_reporter *cr; | |
| 530 for (cr = charset_table; | |
| 531 cr->charset && !EQ (*(cr->charset), charset); | |
| 532 cr++) | |
| 533 ; | |
| 534 | |
| 535 if (cr->rfc3066) | |
| 536 { | |
| 537 DECLARE_DEBUG_FONTNAME (name); | |
| 538 CHECKING_LANG (0, eidata(name), cr->language); | |
| 4932 | 539 lang = cr->rfc3066; |
| 3659 | 540 } |
| 541 else if (cr->charset) | |
| 542 { | |
| 543 /* what the hey, build 'em on the fly */ | |
| 544 /* #### in the case of error this could return NULL! */ | |
| 545 fccs = mule_to_fc_charset (charset); | |
| 4932 | 546 /* #### Bad idea here */ |
| 547 lang = (const Ascbyte *) XSTRING_DATA (XSYMBOL (XCHARSET_NAME | |
| 548 (charset))->name); | |
| 3659 | 549 } |
| 550 else | |
| 551 { | |
| 552 /* OK, we fell off the end of the table */ | |
| 553 warn_when_safe_lispobj (intern ("xft"), intern ("alert"), | |
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554 list2 (build_ascstring ("unchecked charset"), |
| 3659 | 555 charset)); |
| 556 /* default to "en" | |
| 557 #### THIS IS WRONG, WRONG, WRONG!! | |
| 558 It is why we never fall through to XLFD-checking. */ | |
| 559 } | |
| 560 | |
| 4932 | 561 ASSERT_ASCTEXT_ASCII (lang); |
| 3659 | 562 |
| 563 if (fccs) | |
| 564 { | |
| 565 /* check for character set coverage */ | |
| 566 int i = 0; | |
| 567 FcCharSet *v; | |
| 568 FcResult r = FcPatternGetCharSet (fontxft, FC_CHARSET, i, &v); | |
| 569 | |
| 570 if (r == FcResultTypeMismatch) | |
| 571 { | |
| 572 DEBUG_XFT0 (0, "Unexpected type return in charset value\n"); | |
| 573 result = Qnil; | |
| 574 } | |
| 575 else if (r == FcResultMatch && FcCharSetIsSubset (fccs, v)) | |
| 576 { | |
| 577 /* The full pattern with the bitmap coverage is massively | |
| 578 unwieldy, but the shorter names are just *wrong*. We | |
| 579 should have the full thing internally as truename, and | |
| 580 filter stuff the client doesn't want to see on output. | |
| 581 Should we just store it into the truename right here? */ | |
| 582 DECLARE_DEBUG_FONTNAME (name); | |
| 583 DEBUG_XFT2 (0, "Xft font %s supports %s\n", | |
| 584 eidata(name), lang); | |
| 585 #ifdef RETURN_LONG_FONTCONFIG_NAMES | |
| 586 result = eimake_string(eistr_fullname); | |
| 587 #else | |
| 588 result = eimake_string(eistr_longname); | |
| 589 #endif | |
| 590 } | |
| 591 else | |
| 592 { | |
| 593 DECLARE_DEBUG_FONTNAME (name); | |
| 594 DEBUG_XFT2 (0, "Xft font %s doesn't support %s\n", | |
| 595 eidata(name), lang); | |
| 596 result = Qnil; | |
| 597 } | |
| 598 | |
| 599 /* clean up */ | |
| 600 FcCharSetDestroy (fccs); | |
| 601 } | |
| 602 else | |
| 603 { | |
| 604 /* check for language coverage */ | |
| 605 int i = 0; | |
| 606 FcValue v; | |
| 607 /* the main event */ | |
| 608 FcResult r = FcPatternGet (fontxft, FC_LANG, i, &v); | |
| 609 | |
| 610 if (r == FcResultMatch) | |
| 611 { | |
| 612 if (v.type != FcTypeLangSet) /* excessive paranoia */ | |
| 613 { | |
| 614 ASSERT_ASCTEXT_ASCII(FcTypeOfValueToString(v)); | |
| 615 /* Urk! Fall back and punt to core font. */ | |
| 616 DEBUG_XFT1 (0, "Unexpected type of lang value (%s)\n", | |
| 617 FcTypeOfValueToString (v)); | |
| 618 result = Qnil; | |
| 619 } | |
| 4932 | 620 else if (FcLangSetHasLang (v.u.l, (FcChar8 *) lang) |
| 621 != FcLangDifferentLang) | |
| 3659 | 622 { |
| 623 DECLARE_DEBUG_FONTNAME (name); | |
| 624 DEBUG_XFT2 (0, "Xft font %s supports %s\n", | |
| 625 eidata(name), lang); | |
| 626 #ifdef RETURN_LONG_FONTCONFIG_NAMES | |
| 627 result = eimake_string(eistr_fullname); | |
| 628 #else | |
| 629 result = eimake_string(eistr_longname); | |
| 630 #endif | |
| 631 } | |
| 632 else | |
| 633 { | |
| 634 DECLARE_DEBUG_FONTNAME (name); | |
| 635 DEBUG_XFT2 (0, "Xft font %s doesn't support %s\n", | |
| 636 eidata(name), lang); | |
| 637 result = Qnil; | |
| 638 } | |
| 639 } | |
| 640 else | |
| 641 { | |
| 642 ASSERT_ASCTEXT_ASCII(FcResultToString(r)); | |
| 643 DEBUG_XFT1 (0, "Getting lang: unexpected result=%s\n", | |
| 644 FcResultToString (r)); | |
| 645 result = Qnil; | |
| 646 } | |
| 647 } | |
| 648 | |
| 649 /* clean up and maybe return */ | |
| 650 FcPatternDestroy (fontxft); | |
| 651 if (!UNBOUNDP (result)) | |
| 652 return result; | |
| 653 } | |
| 654 } | |
| 655 return Qnil; | |
| 656 } | |
| 657 #undef DECLARE_DEBUG_FONTNAME | |
| 658 | |
| 659 #endif /* USE_XFT */ | |
| 660 | |
| 661 /* find a font spec that matches font spec FONT and also matches | |
| 662 (the registry of) CHARSET. */ | |
| 663 static Lisp_Object | |
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664 XFUN (find_charset_font) (Lisp_Object device, Lisp_Object font, |
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665 Lisp_Object charset, |
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666 enum font_specifier_matchspec_stages stage) |
| 3659 | 667 { |
| 668 Lisp_Object result = Qnil, registries = Qnil; | |
| 669 int j, hyphen_count, registries_len = 0; | |
| 670 Ibyte *hyphening, *new_hyphening; | |
| 671 Bytecount xlfd_length; | |
| 672 | |
| 673 DECLARE_EISTRING(ei_xlfd_without_registry); | |
| 674 DECLARE_EISTRING(ei_xlfd); | |
| 675 | |
| 676 #ifdef USE_XFT | |
| 677 result = xft_find_charset_font(font, charset, stage); | |
| 678 if (!NILP(result)) | |
| 679 { | |
| 680 return result; | |
| 681 } | |
| 682 #endif | |
| 683 | |
| 684 switch (stage) | |
| 685 { | |
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686 case STAGE_INITIAL: |
| 3659 | 687 { |
| 688 if (!(NILP(XCHARSET_REGISTRIES(charset))) | |
| 689 && VECTORP(XCHARSET_REGISTRIES(charset))) | |
| 690 { | |
| 691 registries_len = XVECTOR_LENGTH(XCHARSET_REGISTRIES(charset)); | |
| 692 registries = XCHARSET_REGISTRIES(charset); | |
| 693 } | |
| 694 break; | |
| 695 } | |
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696 case STAGE_FINAL: |
| 3659 | 697 { |
| 698 registries_len = 1; | |
| 699 registries = Qunicode_registries; | |
| 700 break; | |
| 701 } | |
| 702 default: | |
| 703 { | |
| 704 assert(0); | |
| 705 break; | |
| 706 } | |
| 707 } | |
| 708 | |
| 709 eicpy_lstr(ei_xlfd, font); | |
| 710 hyphening = eidata(ei_xlfd); | |
| 711 xlfd_length = eilen(ei_xlfd); | |
| 712 | |
| 713 /* Count the hyphens in the string, moving new_hyphening to just after the | |
| 714 last one. */ | |
| 715 hyphen_count = count_hyphens(hyphening, xlfd_length, &new_hyphening); | |
| 716 | |
| 717 if (0 == registries_len || (5 > hyphen_count && | |
| 718 !(1 == xlfd_length && '*' == *hyphening))) | |
| 719 { | |
| 720 /* No proper XLFD specified, or we can't modify the pattern to change | |
| 721 the registry and encoding to match what we want, or we have no | |
| 722 information on the registry needed. */ | |
| 723 eito_external(ei_xlfd, Qx_font_name_encoding); | |
| 724 DEBUG_OBJECTS ("about to xlistfonts_checking_charset, XLFD %s\n", | |
| 725 eidata(ei_xlfd)); | |
| 726 result = xlistfonts_checking_charset (device, eiextdata(ei_xlfd), | |
| 727 charset, stage); | |
| 728 /* No need to loop through the available registries; return | |
| 729 immediately. */ | |
| 730 return result; | |
| 731 } | |
| 732 else if (1 == xlfd_length && '*' == *hyphening) | |
| 733 { | |
| 734 /* It's a single asterisk. We can add the registry directly to the | |
| 735 end. */ | |
| 736 eicpy_ch(ei_xlfd_without_registry, '*'); | |
| 737 } | |
| 738 else | |
| 739 { | |
| 740 /* It's a fully-specified XLFD. Work out where the registry and | |
| 741 encoding are, and initialise ei_xlfd_without_registry to the string | |
| 742 without them. */ | |
| 743 | |
| 744 /* count_hyphens has set new_hyphening to just after the last | |
| 745 hyphen. Move back to just after the hyphen before it. */ | |
| 746 | |
| 747 for (new_hyphening -= 2; new_hyphening > hyphening | |
| 748 && '-' != *new_hyphening; --new_hyphening) | |
| 749 ; | |
| 750 ++new_hyphening; | |
| 751 | |
| 752 eicpy_ei(ei_xlfd_without_registry, ei_xlfd); | |
| 753 | |
| 754 /* Manipulate ei_xlfd_without_registry, using the information about | |
| 755 ei_xlfd, to which it's identical. */ | |
| 756 eidel(ei_xlfd_without_registry, new_hyphening - hyphening, -1, | |
| 757 eilen(ei_xlfd) - (new_hyphening - hyphening), -1); | |
| 758 | |
| 759 } | |
| 760 | |
| 761 /* Now, loop through the registries and encodings defined for this | |
| 762 charset, doing an XListFonts each time with the pattern modified to | |
| 763 specify the regisry and encoding. This avoids huge amounts of IPC and | |
| 764 duplicated searching; now we use the searching the X server was doing | |
| 765 anyway, where before the X server did its search, transferred huge | |
| 766 amounts of data, and then we proceeded to do a regexp search on that | |
| 767 data. */ | |
| 768 for (j = 0; j < registries_len && NILP(result); ++j) | |
| 769 { | |
| 770 eireset(ei_xlfd); | |
| 771 eicpy_ei(ei_xlfd, ei_xlfd_without_registry); | |
| 772 | |
| 773 eicat_lstr(ei_xlfd, XVECTOR_DATA(registries)[j]); | |
| 774 | |
| 775 eito_external(ei_xlfd, Qx_font_name_encoding); | |
| 776 | |
| 777 DEBUG_OBJECTS ("about to xlistfonts_checking_charset, XLFD %s\n", | |
| 778 eidata(ei_xlfd)); | |
| 779 result = xlistfonts_checking_charset (device, eiextdata(ei_xlfd), | |
| 780 charset, stage); | |
| 781 } | |
| 782 | |
| 3676 | 783 /* In the event that the charset is ASCII and we haven't matched |
| 784 anything up to now, even with a pattern of "*", add "iso8859-1" | |
| 785 to the charset's registry and try again. Not returning a result | |
| 786 for ASCII means our frame geometry calculations are | |
| 787 inconsistent, and that we may crash. */ | |
| 788 | |
| 789 if (1 == xlfd_length && EQ(charset, Vcharset_ascii) && NILP(result) | |
| 790 && ('*' == eigetch(ei_xlfd_without_registry, 0))) | |
| 791 | |
| 792 { | |
| 793 int have_latin1 = 0; | |
| 794 | |
| 795 /* Set this to, for example, is08859-1 if you want to see the | |
| 796 error behaviour. */ | |
| 797 | |
| 798 #define FALLBACK_ASCII_REGISTRY "iso8859-1" | |
| 799 | |
| 800 for (j = 0; j < registries_len; ++j) | |
| 801 { | |
| 802 if (0 == qxestrcasecmp(XSTRING_DATA(XVECTOR_DATA(registries)[j]), | |
| 4124 | 803 (Ibyte *) FALLBACK_ASCII_REGISTRY)) |
| 3676 | 804 { |
| 805 have_latin1 = 1; | |
| 806 break; | |
| 807 } | |
| 808 } | |
| 809 | |
| 810 if (!have_latin1) | |
| 811 { | |
| 812 Lisp_Object new_registries = make_vector(registries_len + 1, Qnil); | |
| 813 | |
| 814 XVECTOR_DATA(new_registries)[0] | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4932
diff
changeset
|
815 = build_ascstring(FALLBACK_ASCII_REGISTRY); |
| 3676 | 816 |
| 817 memcpy(XVECTOR_DATA(new_registries) + 1, | |
| 818 XVECTOR_DATA(registries), | |
| 819 sizeof XVECTOR_DATA(registries)[0] * | |
| 820 XVECTOR_LENGTH(registries)); | |
| 821 | |
| 822 /* Calling set_charset_registries instead of overwriting the | |
| 823 value directly, to allow the charset font caches to be | |
| 824 invalidated and a change to the default face to be | |
| 825 noted. */ | |
| 826 set_charset_registries(charset, new_registries); | |
| 827 | |
| 3680 | 828 warn_when_safe (Qface, Qwarning, |
| 829 "Your ASCII charset registries contain nothing " | |
| 830 "sensible. Adding `" FALLBACK_ASCII_REGISTRY "'."); | |
| 831 | |
| 3676 | 832 /* And recurse. */ |
| 833 result = | |
| 834 DEVMETH_OR_GIVEN (XDEVICE (device), find_charset_font, | |
| 835 (device, font, charset, stage), | |
| 836 result); | |
| 837 } | |
| 838 else | |
| 839 { | |
| 840 DECLARE_EISTRING (ei_connection_name); | |
| 841 | |
| 842 /* We preserve a copy of the connection name for the error message | |
| 843 after the device is deleted. */ | |
| 844 eicpy_lstr (ei_connection_name, | |
| 845 DEVICE_CONNECTION (XDEVICE(device))); | |
| 846 | |
| 847 stderr_out ("Cannot find a font for ASCII, deleting device on %s\n", | |
| 848 eidata (ei_connection_name)); | |
| 849 | |
| 850 io_error_delete_device (device); | |
| 851 | |
| 852 /* Do a normal warning in the event that we have other, non-X | |
| 853 frames available. (If we don't, io_error_delete_device will | |
| 854 have exited.) */ | |
| 855 warn_when_safe | |
| 856 (Qface, Qerror, | |
| 857 "Cannot find a font for ASCII, deleting device on %s.\n" | |
| 858 "\n" | |
| 859 "Your X server fonts appear to be inconsistent; fix them, or\n" | |
| 860 "the next frame you create on that DISPLAY will crash this\n" | |
| 861 "XEmacs. At a minimum, provide one font with an XLFD ending\n" | |
| 862 "in `" FALLBACK_ASCII_REGISTRY "', so we can work out what size\n" | |
| 863 "a frame should be. ", | |
| 864 eidata (ei_connection_name)); | |
| 865 } | |
| 866 | |
| 867 } | |
| 868 | |
| 3659 | 869 /* This function used to return the font spec, in the case where a font |
| 870 didn't exist on the X server but it did match the charset. We're not | |
| 871 doing that any more, because none of the other platform code does, and | |
| 872 the old behaviour was badly-judged in other respects, so I don't trust | |
| 873 the original author to have had a good reason for it. */ | |
| 874 | |
| 875 return result; | |
| 876 } | |
| 877 | |
| 878 #endif /* MULE */ |