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annotate src/font-mgr.c @ 4985:358aa3bb603f
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| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Fri, 05 Feb 2010 12:12:28 -0600 |
| parents | 3c3c1d139863 |
| children | b5df3737028a 8b2f75cecb89 |
| rev | line source |
|---|---|
| 3354 | 1 /* Lisp font handling implementation for X with Xft. |
| 2 | |
| 3 Copyright (C) 2003 Eric Knauel and Matthias Neubauer | |
| 4 Copyright (C) 2005 Eric Knauel | |
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5 Copyright (C) 2004-2009 Free Software Foundation, Inc. |
| 3354 | 6 |
| 7 Authors: Eric Knauel <knauel@informatik.uni-tuebingen.de> | |
| 8 Matthias Neubauer <neubauer@informatik.uni-freiburg.de> | |
| 9 Stephen J. Turnbull <stephen@xemacs.org> | |
| 10 Created: 27 Oct 2003 | |
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11 Updated: 18 November 2009 by Stephen J. Turnbull |
| 3354 | 12 |
| 13 This file is part of XEmacs. | |
| 14 | |
| 15 XEmacs is free software; you can redistribute it and/or modify it | |
| 16 under the terms of the GNU General Public License as published by the | |
| 17 Free Software Foundation; either version 2, or (at your option) any | |
| 18 later version. | |
| 19 | |
| 20 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 21 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 22 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 23 for more details. | |
| 24 | |
| 25 You should have received a copy of the GNU General Public License | |
| 26 along with XEmacs; see the file COPYING. If not, write to | |
| 27 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 28 Boston, MA 02111-1307, USA. */ | |
| 29 | |
| 30 /* Synched up with: Not in GNU Emacs. */ | |
| 31 | |
| 32 /* This module provides the Lisp interface to fonts in X11, including Xft, | |
| 33 but (at least at first) not GTK+ or Qt. | |
| 34 | |
| 35 Sealevel code should be in ../lwlib/lwlib-fonts.c or | |
| 36 ../lwlib/lwlib-colors.c. | |
| 37 */ | |
| 38 | |
| 39 #include <config.h> | |
| 40 #include "lisp.h" | |
| 41 #include "device.h" | |
| 42 #include "device-impl.h" | |
| 43 #include "console-x-impl.h" | |
| 44 #include "objects-x.h" | |
| 45 #include "objects-x-impl.h" | |
| 46 #include "hash.h" | |
| 47 #include "font-mgr.h" | |
| 48 | |
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49 #include "sysfile.h" |
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50 |
| 3354 | 51 /* #### TO DO #### |
| 52 . The "x-xft-*" and "x_xft_*" nomenclature is mostly redundant, especially | |
| 53 if we separate X fonts from Xft fonts, and use fontconfig more generally. | |
| 54 . We should support the most recent Xft first, old Xft libraries later. | |
| 55 . We may (think about it) wish to use fontconfig generally, even if we're | |
| 56 not using Xft. Either way, names that are really from fontconfig should | |
| 57 use the Fc* namespace. | |
| 58 . Mule-ize this file. | |
| 59 . Separate X Font Struct ops from Xft Font ops; give precedence to Xft but | |
| 60 allow fallback to X. | |
| 61 . Push decisions about font choice, defaults, fallbacks to Lisp; if we | |
| 62 really need efficiency, can reimplement in C later. | |
| 63 . Implement symbols interned in this file in the Q* namespace. | |
| 64 . Implement FcMatrix (Lisp vector). | |
| 65 . Implement FcCharSets (Lisp chartable? For implementation hints, see | |
| 66 FcCharSetFirstPage and FcCharSetNextPage). | |
| 67 . Implement FcConfigs. | |
| 68 DONE | |
| 69 . Fontconfig fontnames are encoded in UTF-8. | |
| 70 */ | |
| 71 | |
| 3360 | 72 Lisp_Object Qfont_mgr; |
| 3354 | 73 Lisp_Object Qfc_patternp; |
| 74 /* Lisp_Object Qfc_result_match; */ /* FcResultMatch */ | |
| 75 Lisp_Object Qfc_result_type_mismatch; /* FcResultTypeMismatch */ | |
| 76 Lisp_Object Qfc_result_no_match; /* FcResultNoMatch */ | |
| 77 Lisp_Object Qfc_result_no_id; /* FcResultNoId */ | |
| 78 Lisp_Object Qfc_internal_error; | |
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79 Lisp_Object Qfc_match_pattern; |
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80 Lisp_Object Qfc_match_font; |
| 3354 | 81 Lisp_Object Vxlfd_font_name_regexp; /* #### Really needed? */ |
| 3935 | 82 Fixnum xft_version; |
| 83 Fixnum fc_version; | |
| 3354 | 84 Fixnum debug_xft; /* Set to 1 enables lots of obnoxious messages. |
| 85 Setting it to 2 or 3 enables even more. */ | |
| 3931 | 86 #ifdef FONTCONFIG_EXPOSE_CONFIG |
| 87 Lisp_Object Qfc_configp; | |
| 88 static Lisp_Object Vfc_config_weak_list; | |
| 89 #endif | |
| 3354 | 90 |
| 91 /**************************************************************** | |
| 92 * FcPattern objects * | |
| 93 ****************************************************************/ | |
| 94 | |
| 95 static void | |
| 96 finalize_fc_pattern (void *header, int UNUSED (for_disksave)) | |
| 97 { | |
| 98 struct fc_pattern *p = (struct fc_pattern *) header; | |
| 99 if (p->fcpatPtr) | |
| 100 { | |
| 101 FcPatternDestroy (p->fcpatPtr); | |
| 102 p->fcpatPtr = 0; | |
| 103 } | |
| 104 } | |
| 105 | |
| 3906 | 106 static void |
| 107 print_fc_pattern (Lisp_Object obj, Lisp_Object printcharfun, | |
| 108 int UNUSED(escapeflag)) | |
| 109 { | |
| 110 struct fc_pattern *c = XFCPATTERN (obj); | |
| 111 if (print_readably) | |
| 112 printing_unreadable_object ("#<fc-pattern 0x%x>", c->header.uid); | |
| 113 write_fmt_string (printcharfun, "#<fc-pattern 0x%x>", c->header.uid); | |
| 114 } | |
| 115 | |
| 116 /* #### We really need an equal method and a hash method (required if you | |
| 117 have an equal method). For the equal method, we can probably use one | |
| 118 or both of | |
| 119 | |
| 120 -- Function: FcBool FcPatternEqual (const FcPattern *pa, const | |
| 121 FcPattern *pb); | |
| 122 Returns whether PA and PB are exactly alike. | |
| 123 | |
| 124 -- Function: FcBool FcPatternEqualSubset (const FcPattern *pa, const | |
| 125 FcPattern *pb, const FcObjectSet *os) | |
| 126 Returns whether PA and PB have exactly the same values for all of | |
| 127 the objects in OS. | |
| 128 | |
| 129 For the hash, we'll have to extract some subset of attributes. | |
| 130 | |
| 131 #### Crap. It's altogether unobvious what we need. x_color_instance | |
| 132 does have a hash method, but fonts are apparently special. I get the | |
| 133 feeling that for this to work properly we're going to need to switch | |
| 134 to fontconfig-based font specifications (although we can allow the | |
| 135 platform syntaxes, the underlying specification object will need to | |
| 136 conform to the fontconfig API, or more precisely the font-mgr API). | |
| 137 | |
| 138 I think the whole `font-truename' interface needs to be dropped. */ | |
| 139 | |
| 3354 | 140 static const struct memory_description fcpattern_description [] = { |
| 141 /* #### nothing here, is this right?? */ | |
| 142 { XD_END } | |
| 143 }; | |
| 144 | |
| 3906 | 145 DEFINE_LRECORD_IMPLEMENTATION("fc-pattern", fc_pattern, 0, |
| 146 0, print_fc_pattern, finalize_fc_pattern, | |
| 147 0, 0, fcpattern_description, | |
| 3354 | 148 struct fc_pattern); |
| 149 | |
| 150 /* | |
| 151 * Helper Functions | |
| 152 */ | |
| 153 static Lisp_Object make_xlfd_font_regexp (void); | |
| 154 static void string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os); | |
| 155 | |
| 156 /* | |
| 157 extract the C representation of the Lisp string STR and convert it | |
| 158 to the encoding used by the Fontconfig API for property and font | |
| 159 names. I suppose that Qnative is the right encoding, the manual | |
| 160 doesn't say much about this topic. This functions assumes that STR | |
| 161 is a Lisp string. | |
| 162 */ | |
| 163 #define extract_fcapi_string(str) \ | |
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164 (LISP_STRING_TO_EXTERNAL ((str), Qfc_font_name_encoding)) |
| 3354 | 165 |
| 3906 | 166 #define build_fcapi_string(str) \ |
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167 (build_extstring ((Extbyte *) (str), Qfc_font_name_encoding)) |
| 3906 | 168 |
| 3360 | 169 /* #### This homebrew lashup should be replaced with FcConstants. |
| 170 | |
| 171 fontconfig assumes that objects (property names) are statically allocated, | |
| 3354 | 172 and you will get bizarre results if you pass Lisp string data or strings |
| 173 allocated on the stack as objects. fontconfig _does_ copy values, so we | |
| 174 (I hope) don't have to worry about that member. | |
| 175 | |
| 176 Probably these functions don't get called so often that the memory leak | |
| 177 due to strdup'ing every time we add a property would matter, but XEmacs | |
| 178 _is_ a long-running process. So we hash them. | |
| 179 | |
| 180 I suspect that using symbol names or even keywords does not provide | |
| 181 assurance that the string won't move in memory. So we hash them | |
| 3360 | 182 ourselves; hash.c hashtables do not interpret the value pointers. |
| 183 | |
| 184 This array should be FcChar8**, but GCC 4.x bitches about signedness. */ | |
| 4932 | 185 static const Extbyte *fc_standard_properties[] = { |
| 3360 | 186 /* treated specially, ordered first */ |
| 187 "family", "size", | |
| 188 /* remaining are alphabetized by group */ | |
| 189 /* standard properties in fontconfig and Xft v.2 */ | |
| 190 "antialias", "aspect", "autohint", "charset", "dpi", "file", | |
| 3354 | 191 "foundry", "ftface", "globaladvance", "hinting", "index", "lang", |
| 192 "minspace", "outline", "pixelsize", "rasterizer", "rgba", "scalable", | |
| 3360 | 193 "scale", "slant", "spacing", "style", "verticallayout", "weight", |
| 194 /* common in modern fonts */ | |
| 195 "fontformat", "fontversion", | |
| 3354 | 196 /* obsolete after Xft v. 1 */ |
| 197 "charwidth", "charheight", "core", "encoding", "render" | |
| 198 }; | |
| 199 | |
| 200 static struct hash_table *fc_property_name_hash_table; | |
| 201 | |
| 202 /* #### Maybe fc_intern should be exposed to LISP? The idea is that | |
| 203 fc-pattern-add could warn or error if the property isn't interned. */ | |
| 204 | |
| 3469 | 205 static const Extbyte * |
| 3354 | 206 fc_intern (Lisp_Object property) |
| 207 { | |
| 208 const void *dummy; | |
| 3469 | 209 const Extbyte *prop = extract_fcapi_string (property); |
| 3354 | 210 const void *val = gethash (prop, fc_property_name_hash_table, &dummy); |
| 211 | |
| 212 /* extract_fcapi_string returns something alloca'd | |
| 213 so we can just drop the old value of prop on the floor */ | |
| 214 if (val) | |
| 3469 | 215 prop = (const Extbyte *) val; |
| 3354 | 216 else |
| 217 { | |
| 3469 | 218 prop = (const Extbyte *) FcStrCopy ((FcChar8 *) prop); |
| 3354 | 219 puthash (prop, NULL, fc_property_name_hash_table); |
| 220 } | |
| 221 return prop; | |
| 222 } | |
| 223 | |
| 224 DEFUN("fc-pattern-p", Ffc_pattern_p, 1, 1, 0, /* | |
| 225 Returns t if OBJECT is of type fc-pattern, nil otherwise. | |
| 226 */ | |
| 227 (object)) | |
| 228 { | |
| 229 return FCPATTERNP(object) ? Qt : Qnil; | |
| 230 } | |
| 231 | |
| 232 DEFUN("fc-pattern-create", Ffc_pattern_create, 0, 0, 0, /* | |
| 233 Return a new, empty fc-pattern object. | |
| 234 */ | |
| 235 ()) | |
| 236 { | |
| 237 fc_pattern *fcpat = | |
| 238 ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern); | |
| 239 | |
| 240 fcpat->fcpatPtr = FcPatternCreate(); | |
| 241 return wrap_fcpattern(fcpat); | |
| 242 } | |
| 243 | |
| 244 DEFUN("fc-name-parse", Ffc_name_parse, 1, 1, 0, /* | |
| 245 Parse an Fc font name and return its representation as a fc pattern object. | |
| 246 */ | |
| 247 (name)) | |
| 248 { | |
| 249 struct fc_pattern *fcpat = | |
| 250 ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern); | |
| 251 | |
| 3906 | 252 CHECK_STRING(name); |
| 3354 | 253 |
| 3469 | 254 fcpat->fcpatPtr = FcNameParse ((FcChar8 *) extract_fcapi_string (name)); |
| 3354 | 255 return wrap_fcpattern(fcpat); |
| 256 } | |
| 257 | |
| 258 /* #### Ga-a-ack! Xft's similar function is actually a different API. | |
| 259 We provide both. */ | |
| 260 DEFUN("fc-name-unparse", Ffc_name_unparse, 1, 1, 0, /* | |
| 261 Unparse an fc pattern object to a string. | |
| 262 */ | |
| 263 (pattern)) | |
| 264 { | |
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265 FcChar8 *name; |
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266 Lisp_Object result; |
| 3354 | 267 CHECK_FCPATTERN(pattern); |
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268 name = FcNameUnparse (XFCPATTERN_PTR (pattern)); |
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269 result = build_fcapi_string (name); |
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270 xfree (name); |
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271 return result; |
| 3354 | 272 } |
| 273 | |
| 274 DEFUN("fc-pattern-duplicate", Ffc_pattern_duplicate, 1, 1, 0, /* | |
| 275 Make a copy of the fc pattern object PATTERN and return it. | |
| 276 */ | |
| 277 (pattern)) | |
| 278 { | |
| 279 struct fc_pattern *copy = NULL; | |
| 280 CHECK_FCPATTERN(pattern); | |
| 281 | |
| 282 copy = ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern); | |
| 283 copy->fcpatPtr = FcPatternDuplicate(XFCPATTERN_PTR(pattern)); | |
| 284 return wrap_fcpattern(copy); | |
| 285 } | |
| 286 | |
| 287 DEFUN("fc-pattern-add", Ffc_pattern_add, 3, 3, 0, /* | |
| 288 Add attributes to the pattern object PATTERN. PROPERTY is a string naming | |
| 289 the attribute to add, VALUE the value for this attribute. | |
| 290 | |
| 291 VALUE may be a string, integer, float, or symbol, in which case the value | |
| 292 will be added as an FcChar8[], int, double, or FcBool respectively. | |
| 293 */ | |
| 294 (pattern, property, value)) | |
| 295 { | |
| 296 Bool res = 0; | |
| 3469 | 297 const Extbyte *obj; |
| 3354 | 298 FcPattern *fcpat; |
| 299 | |
| 300 CHECK_FCPATTERN(pattern); | |
| 301 CHECK_STRING(property); | |
| 302 | |
| 303 obj = fc_intern (property); | |
| 304 fcpat = XFCPATTERN_PTR (pattern); | |
| 305 | |
| 306 if (STRINGP(value)) | |
| 307 { | |
| 308 FcChar8 *str = (FcChar8 *) extract_fcapi_string (value); | |
| 309 res = FcPatternAddString (fcpat, obj, str); | |
| 310 } | |
| 311 else if (INTP(value)) | |
| 312 { | |
| 313 res = FcPatternAddInteger (fcpat, obj, XINT(value)); | |
| 314 } | |
| 315 else if (FLOATP(value)) | |
| 316 { | |
| 317 res = FcPatternAddDouble (fcpat, obj, (double) XFLOAT_DATA(value)); | |
| 318 } | |
| 319 else if (SYMBOLP(value)) | |
| 320 { | |
| 321 res = FcPatternAddBool (fcpat, obj, !NILP(value)); | |
| 322 } | |
| 323 /* else ... maybe we should wta here? */ | |
| 324 | |
| 325 return res ? Qt : Qnil; | |
| 326 } | |
| 327 | |
| 328 DEFUN("fc-pattern-del", Ffc_pattern_del, 2, 2, 0, /* | |
| 329 Remove attribute PROPERTY from fc pattern object OBJECT. | |
| 330 */ | |
| 331 (pattern, property)) | |
| 332 { | |
| 333 Bool res; | |
| 334 | |
| 335 CHECK_FCPATTERN(pattern); | |
| 336 CHECK_STRING(property); | |
| 337 | |
| 3469 | 338 res = FcPatternDel(XFCPATTERN_PTR(pattern), extract_fcapi_string (property)); |
| 3354 | 339 return res ? Qt : Qnil; |
| 340 } | |
| 341 | |
| 342 /* Generic interface to FcPatternGet() | |
| 343 * Don't support the losing symbol-for-property interface. | |
| 344 */ | |
| 345 DEFUN("fc-pattern-get", Ffc_pattern_get, 2, 4, 0, /* | |
| 346 From PATTERN, extract PROPERTY for the ID'th member, of type TYPE. | |
| 347 | |
| 348 PATTERN is an Xft (fontconfig) pattern object. | |
| 349 PROPERTY is a string naming an fontconfig font property. | |
| 350 Optional ID is a nonnegative integer indexing the list of values for PROPERTY | |
| 351 stored in PATTERN, defaulting to 0 (the first value). | |
| 352 Optional TYPE is a symbol, one of 'string, 'boolean, 'integer, 'float, | |
| 353 'double, 'matrix, 'charset, or 'void, corresponding to the FcValue types. | |
| 354 ('float is an alias for 'double). | |
| 355 | |
| 356 The Lisp types returned will conform to TYPE: | |
| 357 string string | |
| 358 boolean `t' or `nil' | |
| 359 integer integer | |
| 360 double (float) float | |
| 361 matrix not implemented | |
| 362 charset not implemented | |
| 363 void not implemented | |
| 364 | |
| 365 Symbols with names of the form "fc-result-DESCRIPTION" are returned when | |
| 366 the desired value is not available. These are | |
| 367 | |
| 368 fc-result-type-mismatch the value found has an unexpected type | |
| 369 fc-result-no-match there is no such attribute | |
| 370 fc-result-no-id there is no value for the requested ID | |
| 371 | |
| 372 The types of the following standard properties are predefined by fontconfig. | |
| 373 The symbol 'fc-result-type-mismatch will be returned if the object exists but | |
| 374 TYPE does not match the predefined type. It is best not to specify a type | |
| 375 for predefined properties, as a mistake here ensures error returns on the | |
| 376 correct type. | |
| 377 | |
| 378 Each standard property has a convenience accessor defined in fontconfig.el, | |
| 379 named in the form "fc-pattern-get-PROPERTY". The convenience functions are | |
| 380 preferred to `fc-pattern-get' since a typo in the string naming a property | |
| 381 will result in a silent null return, while a typo in a function name will | |
| 382 usually result in a compiler or runtime \"not fboundp\" error. You may use | |
| 383 `defsubst' to define convenience functions for non-standard properties. | |
| 384 | |
| 385 family String Font family name | |
| 386 style String Font style. Overrides weight and slant | |
| 387 slant Int Italic, oblique or roman | |
| 388 weight Int Light, medium, demibold, bold or black | |
| 389 size Double Point size | |
| 390 aspect Double Stretches glyphs horizontally before hinting | |
| 391 pixelsize Double Pixel size | |
| 392 spacing Int Proportional, monospace or charcell | |
| 393 foundry String Font foundry name | |
| 394 antialias Bool Whether glyphs can be antialiased | |
| 395 hinting Bool Whether the rasterizer should use hinting | |
| 396 verticallayout Bool Use vertical layout | |
| 397 autohint Bool Use autohinter instead of normal hinter | |
| 398 globaladvance Bool Use font global advance data | |
| 399 file String The filename holding the font | |
| 400 index Int The index of the font within the file | |
| 401 ftface FT_Face Use the specified FreeType face object | |
| 402 rasterizer String Which rasterizer is in use | |
| 403 outline Bool Whether the glyphs are outlines | |
| 404 scalable Bool Whether glyphs can be scaled | |
| 405 scale Double Scale factor for point->pixel conversions | |
| 406 dpi Double Target dots per inch | |
| 407 rgba Int unknown, rgb, bgr, vrgb, vbgr, none - subpixel geometry | |
| 408 minspace Bool Eliminate leading from line spacing | |
| 409 charset CharSet Unicode chars encoded by the font | |
| 410 lang String List of RFC-3066-style languages this font supports | |
| 411 | |
| 412 The FT_Face, Matrix, CharSet types are unimplemented, so the corresponding | |
| 413 properties are not accessible from Lisp at this time. If the value of a | |
| 414 property returned has type FT_Face, FcCharSet, or FcMatrix, | |
| 415 `fc-result-type-mismatch' is returned. | |
| 416 | |
| 417 The following properties which were standard in Xft v.1 are obsolete in | |
| 418 Xft v.2: encoding, charwidth, charheight, core, and render. */ | |
| 419 (pattern, property, id, type)) | |
| 420 { | |
| 3469 | 421 Extbyte *fc_property; |
| 3354 | 422 FcResult fc_result; |
| 423 FcValue fc_value; | |
| 424 | |
| 425 /* | |
| 426 process arguments | |
| 427 */ | |
| 428 CHECK_FCPATTERN (pattern); | |
| 429 | |
| 430 #if 0 | |
| 431 /* Don't support the losing symbol-for-property interface. */ | |
| 432 property = SYMBOLP (property) ? symbol_name (XSYMBOL (property)) : property; | |
| 433 #endif | |
| 434 if (STRINGP (property)) | |
| 435 { | |
| 3469 | 436 fc_property = extract_fcapi_string (property); |
| 3354 | 437 } |
| 438 else | |
| 439 { | |
| 440 /* if we allow symbols, this would need to be | |
| 441 list3 (Qlambda, list1 (Qobject), | |
| 442 list3 (Qor, list2 (Qstringp, Qobject), | |
| 443 list2 (Qsymbolp, Qobject))) | |
| 444 or something like that? */ | |
| 445 dead_wrong_type_argument (Qstringp, property); | |
| 446 } | |
| 447 | |
| 448 if (!NILP (id)) CHECK_NATNUM (id); | |
| 449 if (!NILP (type)) CHECK_SYMBOL (type); | |
| 450 | |
| 451 /* get property */ | |
| 452 fc_result = FcPatternGet (XFCPATTERN_PTR (pattern), | |
| 453 fc_property, | |
| 454 NILP (id) ? 0 : XINT(id), | |
| 455 &fc_value); | |
| 456 | |
| 457 switch (fc_result) | |
| 458 { | |
| 459 case FcResultMatch: | |
| 460 /* wrap it and return */ | |
| 461 switch (fc_value.type) | |
| 462 { | |
| 463 case FcTypeInteger: | |
| 464 return ((!NILP (type) && !EQ (type, Qinteger)) | |
| 465 ? Qfc_result_type_mismatch : make_int (fc_value.u.i)); | |
| 466 case FcTypeDouble: | |
| 467 return ((!NILP (type) && !EQ (type, intern ("double")) | |
| 468 && !EQ (type, Qfloat)) | |
| 469 ? Qfc_result_type_mismatch : make_float (fc_value.u.d)); | |
| 470 case FcTypeString: | |
| 471 return ((!NILP (type) && !EQ (type, Qstring)) | |
| 472 ? Qfc_result_type_mismatch | |
| 3906 | 473 : build_fcapi_string (fc_value.u.s)); |
| 3354 | 474 case FcTypeBool: |
| 475 return ((!NILP (type) && !EQ (type, Qboolean)) | |
| 476 ? Qfc_result_type_mismatch : fc_value.u.b ? Qt : Qnil); | |
| 477 case FcTypeMatrix: | |
| 478 return Qfc_result_type_mismatch; | |
| 479 /* #### unimplemented | |
| 480 return ((!NILP (type) && !EQ (type, intern ("matrix"))) | |
| 481 ? Qfc_result_type_mismatch : make_int (fc_value.u.m)); | |
| 482 */ | |
| 483 case FcTypeCharSet: | |
| 484 return Qfc_result_type_mismatch; | |
| 485 /* #### unimplemented | |
| 486 return ((!NILP (type) && !EQ (type, intern ("charset"))) | |
| 487 ? Qfc_result_type_mismatch : make_int (fc_value.u.c)); | |
| 488 */ | |
| 489 } | |
| 490 case FcResultTypeMismatch: | |
| 491 return Qfc_result_type_mismatch; | |
| 492 case FcResultNoMatch: | |
| 493 return Qfc_result_no_match; | |
| 494 case FcResultNoId: | |
| 495 return Qfc_result_no_id; | |
| 496 default: | |
| 497 return Qfc_internal_error; | |
| 498 } | |
| 499 } | |
| 500 | |
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501 /* FcConfig handling functions. */ |
| 3354 | 502 |
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503 /* We obviously need to be careful about garbage collecting the current |
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504 FcConfig. I infer from the documentation of FcConfigDestroy that that |
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505 is the only reference maintained by fontconfig. |
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506 So we keep track of our own references on a weak list, and only cons a |
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507 new object if we don't already have a reference to it there. */ |
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508 |
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509 enum DestroyFontsetP { DestroyNo = 0, DestroyYes = 1 }; |
| 3354 | 510 |
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511 static Lisp_Object |
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512 fc_config_create_using (FcConfig * (*create_function) ()) |
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513 { |
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514 FcConfig *fc = (*create_function) (); |
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515 Lisp_Object configs = XWEAK_LIST_LIST (Vfc_config_weak_list); |
| 3354 | 516 |
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517 /* Linear search: fc_configs are not going to multiply like conses. */ |
| 3360 | 518 { |
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519 LIST_LOOP_2 (cfg, configs) |
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520 if (fc == XFCCONFIG_PTR (cfg)) |
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521 return cfg; |
| 3360 | 522 } |
| 523 | |
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524 { |
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525 fc_config *fccfg = |
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526 ALLOC_LCRECORD_TYPE (struct fc_config, &lrecord_fc_config); |
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527 fccfg->fccfgPtr = fc; |
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528 configs = Fcons (wrap_fcconfig (fccfg), configs); |
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529 XWEAK_LIST_LIST (Vfc_config_weak_list) = configs; |
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530 return wrap_fcconfig (fccfg); |
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531 } |
| 3354 | 532 } |
| 533 | |
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534 static Lisp_Object |
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535 fc_strlist_to_lisp_using (FcStrList * (*getter) (FcConfig *), |
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536 Lisp_Object config) |
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537 { |
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538 FcChar8 *thing; |
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539 Lisp_Object value = Qnil; |
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540 FcStrList *thing_list; |
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541 |
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542 CHECK_FCCONFIG (config); |
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543 thing_list = (*getter) (XFCCONFIG_PTR(config)); |
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544 /* Yes, we need to do this check -- sheesh, Keith! */ |
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545 if (!thing_list) |
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546 return Qnil; |
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547 while ((thing = FcStrListNext (thing_list))) |
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548 value = Fcons (build_fcapi_string (thing), value); |
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549 FcStrListDone (thing_list); |
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550 return value; |
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551 } |
| 3931 | 552 |
| 3354 | 553 static Lisp_Object |
| 3931 | 554 fontset_to_list (FcFontSet *fontset, enum DestroyFontsetP destroyp) |
| 3354 | 555 { |
| 556 int idx; | |
| 557 Lisp_Object fontlist = Qnil; | |
| 558 fc_pattern *fcpat; | |
| 559 | |
| 560 /* #### improve this error message */ | |
| 561 if (!fontset) | |
| 4860 | 562 invalid_state ("failed to create FcFontSet", Qunbound); |
| 3354 | 563 for (idx = 0; idx < fontset->nfont; ++idx) |
| 564 { | |
| 565 fcpat = | |
| 566 ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern); | |
| 567 fcpat->fcpatPtr = FcPatternDuplicate (fontset->fonts[idx]); | |
| 568 fontlist = Fcons (wrap_fcpattern(fcpat), fontlist); | |
| 569 } | |
| 3931 | 570 if (destroyp) |
| 571 FcFontSetDestroy (fontset); | |
| 3354 | 572 return fontlist; |
| 573 } | |
| 574 | |
| 3931 | 575 DEFUN("fc-config-p", Ffc_config_p, 1, 1, 0, /* |
| 576 Returns t if OBJECT is of type fc-config, nil otherwise. | |
| 577 */ | |
| 578 (object)) | |
| 579 { | |
| 580 return FCCONFIGP (object) ? Qt : Qnil; | |
| 581 } | |
| 582 | |
| 583 DEFUN("fc-config-create", Ffc_config_create, 0, 0, 0, /* | |
| 584 -- Function: FcConfig *FcConfigCreate (void) | |
| 585 Creates an empty configuration. */ | |
| 586 ()) | |
| 587 { | |
| 588 return fc_config_create_using (&FcConfigCreate); | |
| 589 } | |
| 590 | |
| 591 #if 0 | |
| 592 /* I'm sorry, but we just don't do this in Lisp, OK? | |
| 593 Don't even think about implementing this. */ | |
| 594 DEFUN("fc-config-destroy", Ffc_config_destroy, 1, 1, 0, /* | |
| 595 -- Function: void FcConfigDestroy (FcConfig *config) | |
| 596 Destroys a configuration and any data associated with it. Note | |
| 597 that calling this function with the return value from | |
| 598 FcConfigGetCurrent will place the library in an indeterminate | |
| 599 state. */ | |
| 600 (config)) | |
| 601 { | |
| 602 signal_error (Qunimplemented, "No user-servicable parts!", | |
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603 intern ("fc-config-destroy")); |
| 3931 | 604 } |
| 605 #endif | |
| 606 | |
| 607 DEFUN("fc-config-up-to-date", Ffc_config_up_to_date, 1, 1, 0, /* | |
| 608 -- Function: FcBool FcConfigUptoDate (FcConfig *config) | |
| 609 Checks all of the files related to 'config' and returns whether the | |
| 610 in-memory version is in sync with the disk version. */ | |
| 611 (config)) | |
| 612 { | |
| 613 CHECK_FCCONFIG (config); | |
| 614 return FcConfigUptoDate (XFCCONFIG_PTR (config)) == FcFalse ? Qnil : Qt; | |
| 615 } | |
| 616 | |
| 617 DEFUN("fc-config-build-fonts", Ffc_config_build_fonts, 1, 1, 0, /* | |
| 618 -- Function: FcBool FcConfigBuildFonts (FcConfig *config) | |
| 619 Builds the set of available fonts for the given configuration. | |
| 620 Note that any changes to the configuration after this call have | |
| 621 indeterminate effects. Returns FcFalse if this operation runs out | |
| 622 of memory. | |
| 623 XEmacs: signal out-of-memory, or return nil on success. */ | |
| 624 (config)) | |
| 625 { | |
| 626 CHECK_FCCONFIG (config); | |
| 627 if (FcConfigBuildFonts (XFCCONFIG_PTR (config)) == FcFalse) | |
| 628 out_of_memory ("FcConfigBuildFonts failed", config); | |
| 629 return Qnil; | |
| 630 } | |
| 631 | |
| 632 DEFUN("fc-config-get-config-dirs", Ffc_config_get_config_dirs, 1, 1, 0, /* | |
| 633 -- Function: FcStrList *FcConfigGetConfigDirs (FcConfig *config) | |
| 634 Returns the list of font directories specified in the | |
| 635 configuration files for 'config'. Does not include any | |
| 636 subdirectories. */ | |
| 637 (config)) | |
| 638 { | |
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639 return fc_strlist_to_lisp_using (&FcConfigGetConfigDirs, config); |
| 3931 | 640 } |
| 641 | |
| 642 DEFUN("fc-config-get-font-dirs", Ffc_config_get_font_dirs, 1, 1, 0, /* | |
| 643 -- Function: FcStrList *FcConfigGetFontDirs (FcConfig *config) | |
| 644 Returns the list of font directories in 'config'. This includes the | |
| 645 configured font directories along with any directories below those | |
| 646 in the filesystem. */ | |
| 647 (config)) | |
| 648 { | |
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649 return fc_strlist_to_lisp_using (&FcConfigGetFontDirs, config); |
| 3931 | 650 } |
| 651 | |
| 652 DEFUN("fc-config-get-config-files", Ffc_config_get_config_files, 1, 1, 0, /* | |
| 653 -- Function: FcStrList *FcConfigGetConfigFiles (FcConfig *config) | |
| 654 Returns the list of known configuration files used to generate | |
| 655 'config'. Note that this will not include any configuration done | |
| 656 with FcConfigParse. */ | |
| 657 (config)) | |
| 658 { | |
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659 return fc_strlist_to_lisp_using (&FcConfigGetConfigFiles, config); |
| 3931 | 660 } |
| 661 | |
| 662 DEFUN("fc-config-get-cache", Ffc_config_get_cache, 1, 1, 0, /* | |
| 663 -- Function: char *FcConfigGetCache (FcConfig *config) | |
| 664 Returns the name of the file used to store per-user font | |
| 665 information. */ | |
| 666 (config)) | |
| 667 { | |
| 668 CHECK_FCCONFIG (config); | |
| 669 /* Surely FcConfigGetCache just casts an FcChar8* to char*. */ | |
| 670 return build_fcapi_string ((FcChar8 *) FcConfigGetCache (XFCCONFIG_PTR (config))); | |
| 671 } | |
| 672 | |
| 673 DEFUN("fc-config-get-fonts", Ffc_config_get_fonts, 2, 2, 0, /* | |
| 674 -- Function: FcFontSet *FcConfigGetFonts (FcConfig *config, FcSetName set) | |
| 675 Returns one of the two sets of fonts from the configuration as | |
| 676 specified by 'set'. | |
| 677 `FcSetName' | |
| 678 Specifies one of the two sets of fonts available in a | |
| 679 configuration; FcSetSystem for those fonts specified in the | |
| 680 configuration and FcSetApplication which holds fonts provided by | |
| 681 the application. */ | |
| 682 (config, set)) | |
| 683 { | |
| 684 FcSetName name = FcSetSystem; | |
| 685 FcFontSet *fs = NULL; | |
| 686 | |
| 687 CHECK_FCCONFIG (config); | |
| 688 CHECK_SYMBOL (set); | |
| 689 | |
| 690 if (EQ (set, intern ("fc-set-system"))) | |
| 691 name = FcSetSystem; | |
| 692 else if (EQ (set, intern ("fc-set-application"))) | |
| 693 name = FcSetApplication; | |
| 694 else | |
| 695 wtaerror ("must be in (fc-set-system fc-set-application)", set); | |
| 696 | |
| 697 fs = FcConfigGetFonts (XFCCONFIG_PTR (config), name); | |
| 698 return fs ? fontset_to_list (fs, DestroyNo) : Qnil; | |
| 699 } | |
| 700 | |
| 701 DEFUN("fc-config-set-current", Ffc_config_set_current, 1, 1, 0, /* | |
| 702 -- Function: FcBool FcConfigSetCurrent (FcConfig *config) | |
| 703 Sets the current default configuration to 'config'. Implicitly | |
| 704 calls FcConfigBuildFonts if necessary, returning FcFalse if that | |
| 705 call fails. | |
| 706 XEmacs: signals out-of-memory if FcConfigBuildFonts fails, or args-out-of-range | |
| 707 if the resulting FcConfig has no fonts (which would crash XEmacs if installed). | |
| 708 */ | |
| 709 (config)) | |
| 710 { | |
| 711 CHECK_FCCONFIG (config); | |
| 712 /* *sigh* "Success" DOES NOT mean you have any fonts available. It is | |
| 713 easy to crash fontconfig, and XEmacs with it. Without the following | |
| 714 check, this will do it: | |
| 715 (progn | |
| 716 (fc-config-set-current (fc-config-create)) | |
| 717 (set-face-font 'default "serif-12")) | |
| 718 */ | |
| 719 | |
| 720 if (FcConfigBuildFonts (XFCCONFIG_PTR (config)) == FcFalse) | |
| 721 out_of_memory ("FcConfigBuildFonts failed", config); | |
| 722 /* #### We'd like to avoid this consing, and FcConfigGetFonts sometimes | |
| 723 returns NULL, but it doesn't always. This will do for now .... */ | |
| 724 if (NILP (Ffc_config_get_fonts (config, intern ("fc-set-system"))) | |
| 725 && NILP (Ffc_config_get_fonts (config, intern ("fc-set-application")))) | |
| 726 signal_error (intern ("args-out-of-range"), "no fonts found", config); | |
| 727 /* Should never happen, but I don't trust Keith anymore .... */ | |
| 728 if (FcConfigSetCurrent (XFCCONFIG_PTR (config)) == FcFalse) | |
| 729 out_of_memory ("FcConfigBuildFonts failed in set", config); | |
| 730 return Qnil; | |
| 731 } | |
| 732 | |
| 733 DEFUN("fc-config-get-blanks", Ffc_config_get_blanks, 1, 1, 0, /* | |
| 734 -- Function: FcBlanks *FcConfigGetBlanks (FcConfig *config) | |
| 735 Returns the FcBlanks object associated with the given | |
| 736 configuration, if no blanks were present in the configuration, | |
| 737 this function will return 0. | |
| 738 XEmacs: should convert to a chartable. | |
| 739 #### Unimplemented. */ | |
| 740 (config)) | |
| 741 { | |
| 742 CHECK_FCCONFIG (config); | |
| 743 signal_error (Qunimplemented, "no method to convert FcBlanks object", | |
| 744 intern ("fc-config-get-blanks")); | |
| 745 } | |
| 746 | |
| 747 DEFUN("fc-config-get-rescan-interval", Ffc_config_get_rescan_interval, 1, 1, 0, /* | |
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748 -- Function: int FcConfigGetRescanInterval (FcConfig *config) |
| 3931 | 749 Returns the interval between automatic checks of the configuration |
| 750 (in seconds) specified in 'config'. The configuration is checked | |
| 751 during a call to FcFontList when this interval has passed since | |
| 752 the last check. */ | |
| 753 (config)) | |
| 754 { | |
| 755 CHECK_FCCONFIG (config); | |
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756 return make_int (FcConfigGetRescanInterval (XFCCONFIG_PTR (config))); |
| 3931 | 757 } |
| 758 | |
| 759 DEFUN("fc-config-set-rescan-interval", Ffc_config_set_rescan_interval, 2, 2, 0, /* | |
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760 -- Function: FcBool FcConfigSetRescanInterval (FcConfig *config, int |
| 3931 | 761 rescanInterval) |
| 762 Sets the rescan interval; returns FcFalse if an error occurred. | |
| 763 XEmacs: signal such error, or return nil on success. */ | |
| 764 (config, rescan_interval)) | |
| 765 { | |
| 766 CHECK_FCCONFIG (config); | |
| 767 CHECK_INT (rescan_interval); | |
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768 if (FcConfigSetRescanInterval (XFCCONFIG_PTR (config), |
| 3931 | 769 XINT (rescan_interval)) == FcFalse) |
| 770 signal_error (Qio_error, "FcConfigSetRescanInverval barfed", | |
| 771 intern ("fc-config-set-rescan-interval")); | |
| 772 return Qnil; | |
| 773 } | |
| 774 | |
| 775 /* #### This might usefully be made interactive. */ | |
| 776 DEFUN("fc-config-app-font-add-file", Ffc_config_app_font_add_file, 2, 2, 0, /* | |
| 777 -- Function: FcBool FcConfigAppFontAddFile (FcConfig *config, const | |
| 778 char *file) | |
| 779 Adds an application-specific font to the configuration. */ | |
| 780 (config, file)) | |
| 781 { | |
| 782 CHECK_FCCONFIG (config); | |
| 783 CHECK_STRING (file); | |
| 784 if (FcConfigAppFontAddFile | |
| 785 (XFCCONFIG_PTR (config), | |
|
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786 /* #### FIXME! is Qfile_name right? */ |
|
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787 (FcChar8 *) LISP_STRING_TO_EXTERNAL (file, Qfile_name)) == FcFalse) |
| 3931 | 788 return Qnil; |
| 789 else | |
| 790 return Qt; | |
| 791 } | |
| 792 | |
| 793 /* #### This might usefully be made interactive. */ | |
| 794 DEFUN("fc-config-app-font-add-dir", Ffc_config_app_font_add_dir, 2, 2, 0, /* | |
| 795 -- Function: FcBool FcConfigAppFontAddDir (FcConfig *config, const | |
| 796 char *dir) | |
| 797 Scans the specified directory for fonts, adding each one found to | |
| 798 the application-specific set of fonts. */ | |
| 799 (config, dir)) | |
| 800 { | |
| 801 CHECK_FCCONFIG (config); | |
| 802 CHECK_STRING (dir); | |
| 803 if (FcConfigAppFontAddDir | |
| 804 (XFCCONFIG_PTR (config), | |
|
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805 /* #### FIXME! is Qfile_name right? */ |
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806 (FcChar8 *) LISP_STRING_TO_EXTERNAL (dir, Qfile_name)) == FcFalse) |
| 3931 | 807 return Qnil; |
| 808 else | |
| 809 return Qt; | |
| 810 } | |
| 811 | |
| 812 /* #### This might usefully be made interactive. */ | |
| 813 DEFUN("fc-config-app-font-clear", Ffc_config_app_font_clear, 1, 1, 0, /* | |
| 814 -- Function: void FcConfigAppFontClear (FcConfig *config) | |
| 815 Clears the set of application-specific fonts. */ | |
| 816 (config)) | |
| 817 { | |
| 818 CHECK_FCCONFIG (config); | |
| 819 FcConfigAppFontClear (XFCCONFIG_PTR (config)); | |
| 820 return Qnil; | |
| 821 } | |
| 822 | |
| 823 /* These functions provide some control over how the default | |
| 824 configuration of the library is initialized. (This configuration is | |
| 825 normally implicitly initialized.) */ | |
| 826 | |
| 827 DEFUN("fc-config-filename", Ffc_config_filename, 1, 1, 0, /* | |
| 828 -- Function: char *FcConfigFilename (const char *name) | |
| 829 Given the specified external entity name, return the associated | |
| 830 filename. This provides applications a way to convert various | |
| 831 configuration file references into filename form. | |
| 832 | |
| 833 A null or empty 'name' indicates that the default configuration | |
| 834 file should be used; which file this references can be overridden | |
| 835 with the FC_CONFIG_FILE environment variable. Next, if the name | |
| 836 starts with '~', it refers to a file in the current users home | |
| 837 directory. Otherwise if the name doesn't start with '/', it | |
| 838 refers to a file in the default configuration directory; the | |
| 839 built-in default directory can be overridden with the | |
| 840 FC_CONFIG_DIR environment variable. */ | |
| 841 (name)) | |
| 842 { | |
| 4932 | 843 const Ascbyte *fcname = ""; |
| 3931 | 844 |
| 845 if (!NILP (name)) | |
| 846 { | |
| 847 CHECK_STRING (name); | |
|
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848 /* #### FIXME! is Qfile_name right? */ |
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849 LISP_PATHNAME_CONVERT_OUT (name, fcname); |
| 3931 | 850 } |
| 851 return (build_fcapi_string (FcConfigFilename ((FcChar8 *) fcname))); | |
| 852 } | |
| 853 | |
| 854 DEFUN("fc-init-load-config", Ffc_init_load_config, 0, 0, 0, /* | |
| 855 -- Function: FcConfig *FcInitLoadConfig (void) | |
| 856 Loads the default configuration file and returns the resulting | |
| 857 configuration. Does not load any font information. */ | |
| 858 ()) | |
| 859 { | |
| 860 return fc_config_create_using (&FcInitLoadConfig); | |
| 861 } | |
| 862 | |
| 863 DEFUN("fc-init-load-config-and-fonts", Ffc_init_load_config_and_fonts, 0, 0, 0, /* | |
| 864 -- Function: FcConfig *FcInitLoadConfigAndFonts (void) | |
| 865 Loads the default configuration file and builds information about | |
| 866 the available fonts. Returns the resulting configuration. */ | |
| 867 ()) | |
| 868 { | |
| 869 return fc_config_create_using (&FcInitLoadConfigAndFonts); | |
| 870 } | |
| 871 | |
|
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872 DEFUN("fc-config-get-current", Ffc_config_get_current, 0, 0, 0, /* |
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873 -- Function: FcConfig *FcConfigGetCurrent (void) |
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874 Returns the current default configuration. */ |
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875 ()) |
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876 { |
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877 return fc_config_create_using (&FcConfigGetCurrent); |
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878 } |
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879 |
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880 /* Pattern manipulation functions. */ |
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881 |
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882 DEFUN("fc-default-substitute", Ffc_default_substitute, 1, 1, 0, /* |
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883 Adds defaults for certain attributes if not specified in PATTERN. |
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884 FcPattern PATTERN is modified in-place, and nil is returned. |
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885 * Patterns without a specified style or weight are set to Medium |
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886 * Patterns without a specified style or slant are set to Roman |
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887 * Patterns without a specified pixel size are given one computed from any |
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888 specified point size (default 12), dpi (default 75) and scale (default 1). */ |
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889 (pattern)) |
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890 { |
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891 CHECK_FCPATTERN (pattern); |
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892 FcDefaultSubstitute (XFCPATTERN_PTR (pattern)); |
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893 return Qnil; |
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894 } |
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895 |
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896 /* -- Function: FcBool FcConfigSubstituteWithPat (FcConfig *config, |
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897 FcPattern *p, FcPattern *p_pat FcMatchKind kind) |
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898 OMITTED: use optional arguments in `fc-config-substitute'. */ |
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899 |
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900 DEFUN("fc-config-substitute", Ffc_config_substitute, 1, 4, 0, /* |
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901 Modifies PATTERN according to KIND and TESTPAT using operations from CONFIG. |
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902 PATTERN is modified in-place. Returns an undocumented Boolean value. |
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903 If optional KIND is `fc-match-pattern', then those tagged as pattern operations |
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904 are applied, else if KIND is `fc-match-font', those tagged as font operations |
|
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905 are applied and TESTPAT is used for <test> elements with target=pattern. KIND |
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906 defaults to `fc-match-font'. |
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907 If optional TESTPAT is nil, it is ignored. Otherwise it must be an FcPattern. |
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908 Optional CONFIG must be an FcConfig, defaulting to the current one. |
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909 |
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910 Note that this function actually corresponds to FcConfigSubstituteWithPat, and |
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911 the argument order is changed to take advantage of Lisp optional arguments. */ |
|
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912 (pattern, kind, testpat, config)) |
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913 { |
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914 FcMatchKind knd; |
|
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915 |
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916 /* There ought to be a standard idiom for this.... */ |
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917 if (NILP (kind) |
| 4860 | 918 || EQ (kind, Qfc_match_font)) |
|
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919 knd = FcMatchFont; |
| 4860 | 920 else if (EQ (kind, Qfc_match_pattern)) |
|
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921 knd = FcMatchPattern; |
| 4860 | 922 else |
| 923 wtaerror ("need `fc-match-pattern' or `fc-match-font'", kind); | |
|
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924 |
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925 /* Typecheck arguments */ |
|
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926 CHECK_FCPATTERN (pattern); |
|
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927 if (!NILP (testpat)) CHECK_FCPATTERN (testpat); |
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928 if (!NILP (config)) CHECK_FCCONFIG (config); |
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929 |
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930 return (FcConfigSubstituteWithPat |
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931 (NILP (config) ? FcConfigGetCurrent () : XFCCONFIG_PTR (config), |
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932 XFCPATTERN_PTR (pattern), |
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933 NILP (testpat) ? NULL : XFCPATTERN_PTR (testpat), |
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934 knd) == FcTrue) |
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935 ? Qt : Qnil; |
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936 } |
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937 |
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938 /* Pattern matching functions. */ |
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939 |
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940 /* The following functions return fonts that match a certain pattern. |
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941 `FcFontRenderPrepare' and `FcFontMatch' always return a single best |
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942 match. `FcFontList' returns the list of fonts that match a given |
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943 pattern on a certain set of properties. `FcFontSort' returns the |
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944 entire list of fonts, sorted in order of match quality, possibly |
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945 filtering out fonts that do not provide additional characters beyond |
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946 those provided by preferred fonts. */ |
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947 |
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948 DEFUN("fc-font-render-prepare", Ffc_font_render_prepare, 2, 3, 0, /* |
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949 Return a new pattern blending PATTERN and FONT. |
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950 Optional CONFIG is an FcConfig, defaulting to the current one. |
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951 The returned pattern consists of elements of FONT not appearing in PATTERN, |
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952 elements of PATTERN not appearing in FONT, and the best matching value from |
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953 PATTERN for elements appearing in both. The result is passed to |
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954 FcConfigSubstitute with 'kind' FcMatchFont and then returned. */ |
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955 (pattern, font, config)) |
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956 { |
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957 if (NILP (config)) { |
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958 config = Ffc_config_get_current (); |
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959 } |
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960 CHECK_FCPATTERN (pattern); |
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961 CHECK_FCPATTERN (font); |
|
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962 CHECK_FCCONFIG (config); |
|
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963 |
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|
964 /* I don't think this can fail? */ |
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965 return wrap_fcpattern (FcFontRenderPrepare (XFCCONFIG_PTR(config), |
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966 XFCPATTERN_PTR(font), |
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967 XFCPATTERN_PTR(pattern))); |
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968 } |
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969 |
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970 DEFUN("fc-font-match", Ffc_font_match, 2, 3, 0, /* |
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971 Return the font on DEVICE that most closely matches PATTERN. |
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972 |
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973 DEVICE is an X11 device. |
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974 PATTERN is a fontconfig pattern object. |
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975 Optional CONFIG is an FcConfig, defaulting to the current one. |
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976 Returns a fontconfig pattern object representing the closest match to the |
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977 given pattern, or an error code. Possible error codes are |
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978 `fc-result-no-match' and `fc-result-no-id'. |
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979 PATTERN is massaged with FcConfigSubstitute and FcDefaultSubstitute before |
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980 being processed by FcFontMatch. */ |
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981 (device, pattern, config)) |
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982 { |
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983 FcResult res; |
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984 struct fc_pattern *res_fcpat; |
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985 FcPattern *p; |
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986 FcConfig *fcc; |
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987 |
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988 CHECK_FCPATTERN(pattern); |
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989 if (NILP(device)) |
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990 return Qnil; |
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991 CHECK_X_DEVICE(device); |
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992 if (!DEVICE_LIVE_P(XDEVICE(device))) |
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993 return Qnil; |
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994 if (!NILP (config)) |
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995 CHECK_FCCONFIG (config); |
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|
996 |
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997 res_fcpat = ALLOC_LCRECORD_TYPE (struct fc_pattern, &lrecord_fc_pattern); |
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998 p = XFCPATTERN_PTR(pattern); |
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999 fcc = NILP (config) ? FcConfigGetCurrent () : XFCCONFIG_PTR (config); |
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1000 |
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1001 FcConfigSubstitute (fcc, p, FcMatchPattern); |
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1002 FcDefaultSubstitute (p); |
|
4809
0d3ccd5a2509
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|
1003 res = FcResultMatch; |
|
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1004 res_fcpat->fcpatPtr = FcFontMatch (fcc, p, &res); |
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1005 |
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1006 if (res_fcpat->fcpatPtr == NULL) |
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1007 switch (res) { |
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1008 case FcResultNoMatch: |
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1009 return Qfc_result_no_match; |
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1010 case FcResultNoId: |
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1011 return Qfc_result_no_id; |
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1012 default: |
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1013 return Qfc_internal_error; |
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1014 } |
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1015 else |
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1016 return wrap_fcpattern(res_fcpat); |
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1017 } |
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1018 |
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1019 /* #### fix this name to correspond to Ben's new nomenclature */ |
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1020 DEFUN("fc-list-fonts-pattern-objects", Ffc_list_fonts_pattern_objects, |
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1021 3, 3, 0, /* |
|
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1022 Return a list of fonts on DEVICE that match PATTERN for PROPERTIES. |
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1023 Each font is represented by a fontconfig pattern object. |
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1024 |
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1025 DEVICE is an X11 device. |
|
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1026 PATTERN is a fontconfig pattern to be matched. |
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1027 PROPERTIES is a list of property names (strings) that should match. |
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1028 |
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1029 #### DEVICE is unused, ignored, and may be removed if it's not needed to |
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1030 match other font-listing APIs. */ |
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1031 (UNUSED (device), pattern, properties)) |
|
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1032 { |
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1033 FcObjectSet *os; |
|
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1034 FcFontSet *fontset; |
|
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1035 |
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1036 CHECK_FCPATTERN (pattern); |
|
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|
1037 CHECK_LIST (properties); |
|
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1038 |
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1039 os = FcObjectSetCreate (); |
|
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1040 string_list_to_fcobjectset (properties, os); |
|
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1041 /* #### why don't we need to do the "usual substitutions"? */ |
|
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1042 fontset = FcFontList (NULL, XFCPATTERN_PTR (pattern), os); |
|
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1043 FcObjectSetDestroy (os); |
|
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1044 |
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|
1045 return fontset_to_list (fontset, DestroyYes); |
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1046 |
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1047 } |
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1048 |
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1049 /* #### maybe this can/should be folded into fc-list-fonts-pattern-objects? */ |
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1050 DEFUN("fc-font-sort", Ffc_font_sort, 2, 4, 0, /* |
|
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1051 Return a list of all fonts sorted by proximity to PATTERN. |
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1052 Each font is represented by a fontconfig pattern object. |
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1053 |
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1054 DEVICE is an X11 device. |
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1055 PATTERN is a fontconfig pattern to be matched. |
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1056 Optional argument TRIM, if non-nil, means to trim trailing fonts that do not |
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1057 contribute new characters to the union repertoire. |
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1058 |
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1059 #### Optional argument NOSUB, if non-nil, suppresses some of the usual |
|
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1060 property substitutions. DON'T USE THIS in production code, it is intended |
|
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|
1061 for exploring behavior of fontconfig and will be removed when this code is |
|
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|
1062 stable. |
|
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|
1063 |
|
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1064 #### DEVICE is unused, ignored, and may be removed if it's not needed to |
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1065 match other font-listing APIs. */ |
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1066 (UNUSED (device), pattern, trim, nosub)) |
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1067 { |
|
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|
1068 CHECK_FCPATTERN (pattern); |
|
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|
1069 |
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1070 { |
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1071 FcConfig *fcc = FcConfigGetCurrent(); |
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1072 FcFontSet *fontset; |
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1073 FcPattern *p = XFCPATTERN_PTR (pattern); |
|
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1074 FcResult fcresult; |
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1075 |
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1076 if (NILP(nosub)) /* #### temporary debug hack */ |
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1077 FcDefaultSubstitute (p); |
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1078 FcConfigSubstitute (fcc, p, FcMatchPattern); |
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1079 fontset = FcFontSort (fcc, p, !NILP(trim), NULL, &fcresult); |
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1080 |
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1081 return fontset_to_list (fontset, DestroyYes); |
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1082 } |
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1083 } |
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1084 |
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1085 #ifdef FONTCONFIG_EXPOSE_CONFIG |
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1086 |
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1087 /* Configuration routines --- for debugging |
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1088 Don't depend on these routines being available in the future! |
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1089 |
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1090 3.2.10 Initialization |
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1091 --------------------- |
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1092 |
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1093 An FcConfig object holds the internal representation of a configuration. |
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1094 There is a default configuration which applications may use by passing |
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1095 0 to any function using the data within an FcConfig. |
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1096 */ |
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1097 |
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1098 static void |
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1099 finalize_fc_config (void *header, int UNUSED (for_disksave)) |
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1100 { |
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1101 struct fc_config *p = (struct fc_config *) header; |
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1102 if (p->fccfgPtr && p->fccfgPtr != FcConfigGetCurrent()) |
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1103 { |
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1104 /* If we get here, all of *our* references are garbage (see comment on |
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1105 fc_config_create_using() for why), and the only reference that |
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1106 fontconfig keeps is the current FcConfig. */ |
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1107 FcConfigDestroy (p->fccfgPtr); |
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1108 } |
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1109 p->fccfgPtr = 0; |
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1110 } |
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1111 |
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1112 static void |
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1113 print_fc_config (Lisp_Object obj, Lisp_Object printcharfun, |
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1114 int UNUSED(escapeflag)) |
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1115 { |
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1116 struct fc_config *c = XFCCONFIG (obj); |
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1117 if (print_readably) |
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1118 printing_unreadable_object ("#<fc-config 0x%x>", c->header.uid); |
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1119 write_fmt_string (printcharfun, "#<fc-config 0x%x>", c->header.uid); |
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1120 } |
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1121 |
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1122 static const struct memory_description fcconfig_description [] = { |
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1123 /* #### nothing here, is this right?? */ |
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1124 { XD_END } |
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1125 }; |
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1126 |
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1127 DEFINE_LRECORD_IMPLEMENTATION("fc-config", fc_config, 0, |
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1128 0, print_fc_config, finalize_fc_config, 0, 0, |
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1129 fcconfig_description, |
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1130 struct fc_config); |
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1131 |
| 3931 | 1132 DEFUN("fc-init", Ffc_init, 0, 0, 0, /* |
| 1133 -- Function: FcBool FcInit (void) | |
| 1134 Loads the default configuration file and the fonts referenced | |
| 1135 therein and sets the default configuration to that result. | |
| 1136 Returns whether this process succeeded or not. If the default | |
| 1137 configuration has already been loaded, this routine does nothing | |
| 1138 and returns FcTrue. */ | |
| 1139 ()) | |
| 1140 { | |
| 1141 return (FcInit () == FcTrue) ? Qt : Qnil; | |
| 1142 } | |
| 1143 | |
| 1144 DEFUN("fc-get-version", Ffc_get_version, 0, 0, 0, /* | |
| 1145 -- Function: int FcGetVersion (void) | |
| 1146 Returns the version number of the library. | |
| 3935 | 1147 XEmacs: No, this should NOT return a pretty string. |
| 3931 | 1148 (let ((i (fc-get-version))) |
| 1149 (format "%d.%d.%d" (/ i 10000) (mod (/ i 100) 100) (mod i 100))) | |
| 3935 | 1150 gives the usual x.y.z format. This is the version of the .so. It can be |
| 1151 checked against `fc-version', which is the version of fontconfig.h. | |
| 1152 It's probably not a disaster if `(> (fc-get-version) fc-version)'. */ | |
| 3931 | 1153 ()) |
| 1154 { | |
| 1155 return make_int (FcGetVersion ()); | |
| 1156 } | |
| 1157 | |
| 1158 DEFUN("fc-init-reinitialize", Ffc_init_reinitialize, 0, 0, 0, /* | |
| 1159 -- Function: FcBool FcInitReinitialize (void) | |
| 1160 Forces the default configuration file to be reloaded and resets | |
| 1161 the default configuration. */ | |
| 1162 ()) | |
| 1163 { | |
| 1164 return (FcInitReinitialize () == FcTrue) ? Qt : Qnil; | |
| 1165 } | |
| 1166 | |
| 1167 DEFUN("fc-init-bring-up-to-date", Ffc_init_bring_up_to_date, 0, 0, 0, /* | |
| 1168 -- Function: FcBool FcInitBringUptoDate (void) | |
| 1169 Checks the rescan interval in the default configuration, checking | |
| 1170 the configuration if the interval has passed and reloading the | |
| 1171 configuration when any changes are detected. */ | |
| 1172 ()) | |
| 1173 { | |
| 1174 return (FcInitBringUptoDate () == FcTrue) ? Qt : Qnil; | |
| 1175 } | |
| 1176 | |
| 1177 #endif /* FONTCONFIG_EXPOSE_CONFIG */ | |
| 1178 | |
| 3354 | 1179 DEFUN("xlfd-font-name-p", Fxlfd_font_name_p, 1, 1, 0, /* |
| 1180 Check whether the string FONTNAME is a XLFD font name. */ | |
| 1181 (fontname)) | |
| 1182 { | |
| 1183 CHECK_STRING(fontname); | |
| 1184 /* #### should bind `case-fold-search' here? */ | |
| 1185 return Fstring_match(Vxlfd_font_name_regexp, fontname, Qnil, Qnil); | |
| 1186 } | |
| 1187 | |
| 1188 /* FcPatternPrint: there is no point in having wrappers fc-pattern-print, | |
| 1189 Ffc_pattern_print since this function prints to stdout. */ | |
| 1190 | |
| 1191 /* Initialization of font-mgr */ | |
| 1192 | |
| 1193 #define XE_XLFD_SEPARATOR "-" | |
| 1194 /* XLFD specifies ISO 8859-1 encoding, but we can't handle non-ASCII | |
| 1195 in Mule when this function is called. So use HPC. */ | |
| 1196 #if 0 | |
| 1197 #define XE_XLFD_PREFIX "\\(\\+[\040-\176\240-\377]*\\)?-" | |
| 1198 #define XE_XLFD_OPT_TEXT "\\([\040-\044\046-\176\240-\377]*\\)" | |
| 1199 #define XE_XLFD_TEXT "\\([\040-\044\046-\176\240-\377]+\\)" | |
| 1200 #else | |
| 1201 #define XE_XLFD_PREFIX "\\(\\+[\040-\176]*\\)?-" | |
| 1202 #define XE_XLFD_OPT_TEXT "\\([^-]*\\)" | |
| 1203 #define XE_XLFD_TEXT "\\([^-]+\\)" | |
| 1204 #endif | |
| 1205 | |
| 1206 #define XE_XLFD_SLANT "\\([0-9ior?*][iot]?\\)" | |
| 1207 #define XE_XLFD_SPACING "\\([cmp?*]\\)" | |
| 1208 /* Hyphen as minus conflicts with use as separator. */ | |
| 1209 #define XE_XLFD_OPT_NEGATE "~?" | |
| 1210 #define XE_XLFD_NUMBER "\\([0-9?*]+\\)" | |
| 1211 #define XE_XLFD_PSIZE "\\([0-9?*]+\\|\\[[ 0-9+~.e?*]+\\]\\)" | |
| 1212 | |
| 1213 /* Call this only from the init code | |
| 1214 #### This is really horrible, let's get rid of it, please. */ | |
| 1215 static Lisp_Object | |
| 1216 make_xlfd_font_regexp (void) | |
| 1217 { | |
| 1218 struct gcpro gcpro1; | |
| 1219 unsigned i; | |
| 1220 Lisp_Object reg = Qnil; | |
| 1221 const Extbyte *re[] = /* #### This could just be catenated by | |
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1222 cpp and passed to build_extstring. */ |
| 3354 | 1223 { |
| 1224 /* Regular expression matching XLFDs as defined by XLFD v. 1.5. | |
| 1225 Matches must be case-insensitive. | |
| 1226 PSIZE is a pixel or point size, which may be a "matrix". The | |
| 1227 syntax of a matrix is not checked, just some lexical properties. | |
| 1228 AFAICT none of the TEXT fields except adstyle is optional. | |
| 1229 | |
| 1230 NB. It should not be a problem if this matches "too much", since | |
| 1231 an "old" server will simply not be able to find a matching font. */ | |
| 1232 "\\`", | |
| 1233 XE_XLFD_PREFIX, /* prefix */ | |
| 1234 XE_XLFD_TEXT, /* foundry */ | |
| 1235 XE_XLFD_SEPARATOR, | |
| 1236 XE_XLFD_TEXT, /* family */ | |
| 1237 XE_XLFD_SEPARATOR, | |
| 1238 XE_XLFD_TEXT, /* weight */ | |
| 1239 XE_XLFD_SEPARATOR, | |
| 1240 XE_XLFD_SLANT, /* slant */ | |
| 1241 XE_XLFD_SEPARATOR, | |
| 1242 XE_XLFD_TEXT, /* swidth */ | |
| 1243 XE_XLFD_SEPARATOR, | |
| 1244 XE_XLFD_OPT_TEXT, /* adstyle */ | |
| 1245 XE_XLFD_SEPARATOR, | |
| 1246 XE_XLFD_PSIZE, /* pixelsize */ | |
| 1247 XE_XLFD_SEPARATOR, | |
| 1248 XE_XLFD_PSIZE, /* pointsize */ | |
| 1249 XE_XLFD_SEPARATOR, | |
| 1250 XE_XLFD_NUMBER, /* resx */ | |
| 1251 XE_XLFD_SEPARATOR, | |
| 1252 XE_XLFD_NUMBER, /* resy */ | |
| 1253 XE_XLFD_SEPARATOR, | |
| 1254 XE_XLFD_SPACING, /* spacing */ | |
| 1255 XE_XLFD_SEPARATOR, | |
| 1256 XE_XLFD_OPT_NEGATE, /* avgwidth */ | |
| 1257 XE_XLFD_NUMBER, | |
| 1258 XE_XLFD_SEPARATOR, | |
| 1259 XE_XLFD_TEXT, /* registry */ | |
| 1260 XE_XLFD_SEPARATOR, | |
| 1261 XE_XLFD_TEXT, /* encoding */ | |
| 1262 "\\'" | |
| 1263 }; | |
| 1264 | |
| 1265 GCPRO1 (reg); | |
| 1266 for (i = 0; i < sizeof(re)/sizeof(Extbyte *); i++) | |
| 1267 { | |
| 1268 /* #### Currently this is Host Portable Coding, not ISO 8859-1. */ | |
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1269 reg = concat2(reg, build_extstring (re[i], Qx_font_name_encoding)); |
| 3354 | 1270 } |
| 1271 | |
| 1272 RETURN_UNGCPRO (reg); | |
| 1273 } | |
| 1274 #undef XE_XLFD_SEPARATOR | |
| 1275 #undef XE_XLFD_PREFIX | |
| 1276 #undef XE_XLFD_OPT_TEXT | |
| 1277 #undef XE_XLFD_TEXT | |
| 1278 #undef XE_XLFD_OPT_SLANT | |
| 1279 #undef XE_XLFD_OPT_SPACING | |
| 1280 #undef XE_XLFD_OPT_NEGATE | |
| 1281 #undef XE_XLFD_NUMBER | |
| 1282 #undef XE_XLFD_PSIZE | |
| 1283 | |
| 1284 #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \ | |
| 1285 ? ((unsigned long) (x)) : ((unsigned long) (y))) | |
| 1286 | |
| 1287 static void | |
| 1288 string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os) | |
| 1289 { | |
| 1290 EXTERNAL_LIST_LOOP_2 (elt, list) | |
| 1291 { | |
| 3469 | 1292 const Extbyte *s; |
| 3354 | 1293 |
| 1294 CHECK_STRING (elt); | |
| 1295 s = fc_intern (elt); | |
| 1296 FcObjectSetAdd (os, s); | |
| 1297 } | |
| 1298 } | |
| 1299 | |
| 1300 void | |
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1301 syms_of_font_mgr (void) { |
| 3354 | 1302 INIT_LRECORD_IMPLEMENTATION(fc_pattern); |
| 1303 | |
| 1304 DEFSYMBOL_MULTIWORD_PREDICATE(Qfc_patternp); | |
| 1305 | |
| 1306 DEFSYMBOL(Qfc_result_type_mismatch); | |
| 1307 DEFSYMBOL(Qfc_result_no_match); | |
| 1308 DEFSYMBOL(Qfc_result_no_id); | |
| 1309 DEFSYMBOL(Qfc_internal_error); | |
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1310 DEFSYMBOL(Qfc_match_pattern); |
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1311 DEFSYMBOL(Qfc_match_font); |
| 3360 | 1312 DEFSYMBOL(Qfont_mgr); |
| 3354 | 1313 |
| 1314 DEFSUBR(Ffc_pattern_p); | |
| 1315 DEFSUBR(Ffc_pattern_create); | |
| 1316 DEFSUBR(Ffc_name_parse); | |
| 1317 DEFSUBR(Ffc_name_unparse); | |
| 1318 DEFSUBR(Ffc_pattern_duplicate); | |
| 1319 DEFSUBR(Ffc_pattern_add); | |
| 1320 DEFSUBR(Ffc_pattern_del); | |
| 1321 DEFSUBR(Ffc_pattern_get); | |
| 1322 DEFSUBR(Ffc_list_fonts_pattern_objects); | |
| 1323 DEFSUBR(Ffc_font_sort); | |
| 1324 DEFSUBR(Ffc_font_match); | |
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1325 DEFSUBR(Ffc_default_substitute); |
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1326 DEFSUBR(Ffc_config_substitute); |
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1327 DEFSUBR(Ffc_font_render_prepare); |
| 3354 | 1328 DEFSUBR(Fxlfd_font_name_p); |
| 3931 | 1329 |
| 1330 #ifdef FONTCONFIG_EXPOSE_CONFIG | |
| 1331 INIT_LRECORD_IMPLEMENTATION(fc_config); | |
| 1332 | |
| 1333 DEFSYMBOL_MULTIWORD_PREDICATE(Qfc_configp); | |
| 1334 | |
| 1335 DEFSUBR(Ffc_config_p); | |
| 1336 DEFSUBR(Ffc_config_create); | |
| 1337 #if 0 | |
| 1338 DEFSUBR(Ffc_config_destroy); | |
| 1339 #endif | |
| 1340 DEFSUBR(Ffc_config_set_current); | |
| 1341 DEFSUBR(Ffc_config_get_current); | |
| 1342 DEFSUBR(Ffc_config_up_to_date); | |
| 1343 DEFSUBR(Ffc_config_build_fonts); | |
| 1344 DEFSUBR(Ffc_config_get_config_dirs); | |
| 1345 DEFSUBR(Ffc_config_get_font_dirs); | |
| 1346 DEFSUBR(Ffc_config_get_config_files); | |
| 1347 DEFSUBR(Ffc_config_get_cache); | |
| 1348 DEFSUBR(Ffc_config_get_fonts); | |
| 1349 DEFSUBR(Ffc_config_get_blanks); | |
| 1350 DEFSUBR(Ffc_config_get_rescan_interval); | |
| 1351 DEFSUBR(Ffc_config_set_rescan_interval); | |
| 1352 DEFSUBR(Ffc_config_app_font_add_file); | |
| 1353 DEFSUBR(Ffc_config_app_font_add_dir); | |
| 1354 DEFSUBR(Ffc_config_app_font_clear); | |
| 1355 DEFSUBR(Ffc_config_filename); | |
| 1356 DEFSUBR(Ffc_init_load_config); | |
| 1357 DEFSUBR(Ffc_init_load_config_and_fonts); | |
| 1358 DEFSUBR(Ffc_init); | |
| 1359 DEFSUBR(Ffc_get_version); | |
| 1360 DEFSUBR(Ffc_init_reinitialize); | |
| 1361 DEFSUBR(Ffc_init_bring_up_to_date); | |
| 1362 #endif /* FONTCONFIG_EXPOSE_CONFIG */ | |
| 3354 | 1363 } |
| 1364 | |
| 1365 void | |
| 1366 vars_of_font_mgr (void) | |
| 1367 { | |
| 3935 | 1368 /* #### The next two DEFVARs belong somewhere else. */ |
| 3354 | 1369 |
| 1370 /* #### I know, but the right fix is use the generic debug facility. */ | |
| 1371 DEFVAR_INT ("xft-debug-level", &debug_xft /* | |
| 1372 Level of debugging messages to issue to stderr for Xft. | |
| 1373 A nonnegative integer. Set to 0 to suppress all warnings. | |
| 1374 Default is 1 to ensure a minimum of debugging output at initialization. | |
| 1375 Higher levels give even more information. | |
| 1376 */ ); | |
|
4757
a23ac8f90a49
Improve warning and error messages from Xft.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4328
diff
changeset
|
1377 debug_xft = 0; |
| 3354 | 1378 |
| 3935 | 1379 DEFVAR_CONST_INT("xft-version", &xft_version /* |
| 3354 | 1380 The major version number of the Xft library being used. |
| 1381 */ ); | |
| 3935 | 1382 xft_version = XFT_VERSION; |
| 1383 | |
| 1384 DEFVAR_CONST_INT("fc-version", &fc_version /* | |
| 1385 The version number of fontconfig.h. It can be checked against | |
| 1386 `(fc-get-version)', which is the version of the .so. | |
| 1387 It's probably not a disaster if `(> (fc-get-version) fc-version)'. | |
| 1388 */ ); | |
| 1389 fc_version = FC_VERSION; | |
| 3354 | 1390 |
| 3360 | 1391 Fprovide (intern ("font-mgr")); |
| 3354 | 1392 } |
| 1393 | |
| 1394 void | |
| 1395 complex_vars_of_font_mgr (void) | |
| 1396 { | |
| 3931 | 1397 #ifdef FONTCONFIG_EXPOSE_CONFIG |
| 1398 Vfc_config_weak_list = make_weak_list (WEAK_LIST_SIMPLE); | |
| 1399 staticpro (&Vfc_config_weak_list); | |
| 1400 #endif | |
| 1401 | |
| 3354 | 1402 DEFVAR_LISP("xft-xlfd-font-regexp", &Vxlfd_font_name_regexp /* |
| 1403 The regular expression used to match XLFD font names. */ | |
| 1404 ); | |
| 1405 Vxlfd_font_name_regexp = make_xlfd_font_regexp(); | |
| 1406 } | |
| 1407 | |
| 1408 void | |
| 1409 reinit_vars_of_font_mgr (void) | |
| 1410 { | |
| 1411 int i, size = (int) countof (fc_standard_properties); | |
| 1412 | |
| 1413 FcInit (); | |
| 1414 | |
| 1415 fc_property_name_hash_table = make_string_hash_table (size); | |
| 1416 for (i = 0; i < size; ++i) | |
| 1417 puthash (fc_standard_properties[i], NULL, fc_property_name_hash_table); | |
| 1418 } | |
| 1419 |