Mercurial > hg > xemacs-beta
annotate src/font-mgr.c @ 5436:da1365dd3f07
Added GPLv3 or later license to modules/README.
author | Mats Lidell <matsl@xemacs.org> |
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date | Sat, 13 Nov 2010 00:15:58 +0100 |
parents | 308d34e9f07d |
children | 8d29f1c4bb98 |
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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. |
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6 Copyright (C) 2010 Ben Wing. |
3354 | 7 |
8 Authors: Eric Knauel <knauel@informatik.uni-tuebingen.de> | |
9 Matthias Neubauer <neubauer@informatik.uni-freiburg.de> | |
10 Stephen J. Turnbull <stephen@xemacs.org> | |
11 Created: 27 Oct 2003 | |
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12 Updated: 18 November 2009 by Stephen J. Turnbull |
3354 | 13 |
14 This file is part of XEmacs. | |
15 | |
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16 XEmacs is free software: you can redistribute it and/or modify it |
3354 | 17 under the terms of the GNU General Public License as published by the |
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18 Free Software Foundation, either version 3 of the License, or (at your |
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19 option) any later version. |
3354 | 20 |
21 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
24 for more details. | |
25 | |
26 You should have received a copy of the GNU General Public License | |
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27 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
3354 | 28 |
29 /* Synched up with: Not in GNU Emacs. */ | |
30 | |
31 /* This module provides the Lisp interface to fonts in X11, including Xft, | |
32 but (at least at first) not GTK+ or Qt. | |
33 | |
34 Sealevel code should be in ../lwlib/lwlib-fonts.c or | |
35 ../lwlib/lwlib-colors.c. | |
36 */ | |
37 | |
38 #include <config.h> | |
39 #include "lisp.h" | |
40 #include "device.h" | |
41 #include "device-impl.h" | |
42 #include "console-x-impl.h" | |
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43 #include "fontcolor-x.h" |
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44 #include "fontcolor-x-impl.h" |
3354 | 45 #include "hash.h" |
46 #include "font-mgr.h" | |
47 | |
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48 #include "sysfile.h" |
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49 |
3354 | 50 /* #### TO DO #### |
51 . The "x-xft-*" and "x_xft_*" nomenclature is mostly redundant, especially | |
52 if we separate X fonts from Xft fonts, and use fontconfig more generally. | |
53 . We should support the most recent Xft first, old Xft libraries later. | |
54 . We may (think about it) wish to use fontconfig generally, even if we're | |
55 not using Xft. Either way, names that are really from fontconfig should | |
56 use the Fc* namespace. | |
57 . Mule-ize this file. | |
58 . Separate X Font Struct ops from Xft Font ops; give precedence to Xft but | |
59 allow fallback to X. | |
60 . Push decisions about font choice, defaults, fallbacks to Lisp; if we | |
61 really need efficiency, can reimplement in C later. | |
62 . Implement symbols interned in this file in the Q* namespace. | |
63 . Implement FcMatrix (Lisp vector). | |
64 . Implement FcCharSets (Lisp chartable? For implementation hints, see | |
65 FcCharSetFirstPage and FcCharSetNextPage). | |
66 . Implement FcConfigs. | |
67 DONE | |
68 . Fontconfig fontnames are encoded in UTF-8. | |
69 */ | |
70 | |
3360 | 71 Lisp_Object Qfont_mgr; |
3354 | 72 Lisp_Object Qfc_patternp; |
73 /* Lisp_Object Qfc_result_match; */ /* FcResultMatch */ | |
74 Lisp_Object Qfc_result_type_mismatch; /* FcResultTypeMismatch */ | |
75 Lisp_Object Qfc_result_no_match; /* FcResultNoMatch */ | |
76 Lisp_Object Qfc_result_no_id; /* FcResultNoId */ | |
77 Lisp_Object Qfc_internal_error; | |
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78 Lisp_Object Qfc_match_pattern; |
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79 Lisp_Object Qfc_match_font; |
3354 | 80 Lisp_Object Vxlfd_font_name_regexp; /* #### Really needed? */ |
3935 | 81 Fixnum xft_version; |
82 Fixnum fc_version; | |
3354 | 83 Fixnum debug_xft; /* Set to 1 enables lots of obnoxious messages. |
84 Setting it to 2 or 3 enables even more. */ | |
3931 | 85 #ifdef FONTCONFIG_EXPOSE_CONFIG |
86 Lisp_Object Qfc_configp; | |
87 static Lisp_Object Vfc_config_weak_list; | |
88 #endif | |
3354 | 89 |
90 /**************************************************************** | |
91 * FcPattern objects * | |
92 ****************************************************************/ | |
93 | |
94 static void | |
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95 finalize_fc_pattern (Lisp_Object obj) |
3354 | 96 { |
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97 struct fc_pattern *p = XFC_PATTERN (obj); |
3354 | 98 if (p->fcpatPtr) |
99 { | |
100 FcPatternDestroy (p->fcpatPtr); | |
101 p->fcpatPtr = 0; | |
102 } | |
103 } | |
104 | |
3906 | 105 /* #### We really need an equal method and a hash method (required if you |
106 have an equal method). For the equal method, we can probably use one | |
107 or both of | |
108 | |
109 -- Function: FcBool FcPatternEqual (const FcPattern *pa, const | |
110 FcPattern *pb); | |
111 Returns whether PA and PB are exactly alike. | |
112 | |
113 -- Function: FcBool FcPatternEqualSubset (const FcPattern *pa, const | |
114 FcPattern *pb, const FcObjectSet *os) | |
115 Returns whether PA and PB have exactly the same values for all of | |
116 the objects in OS. | |
117 | |
118 For the hash, we'll have to extract some subset of attributes. | |
119 | |
120 #### Crap. It's altogether unobvious what we need. x_color_instance | |
121 does have a hash method, but fonts are apparently special. I get the | |
122 feeling that for this to work properly we're going to need to switch | |
123 to fontconfig-based font specifications (although we can allow the | |
124 platform syntaxes, the underlying specification object will need to | |
125 conform to the fontconfig API, or more precisely the font-mgr API). | |
126 | |
127 I think the whole `font-truename' interface needs to be dropped. */ | |
128 | |
3354 | 129 static const struct memory_description fcpattern_description [] = { |
130 /* #### nothing here, is this right?? */ | |
131 { XD_END } | |
132 }; | |
133 | |
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134 DEFINE_NODUMP_LISP_OBJECT ("fc-pattern", fc_pattern, |
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135 0, external_object_printer, finalize_fc_pattern, |
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136 0, 0, fcpattern_description, |
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137 struct fc_pattern); |
3354 | 138 |
139 /* | |
140 * Helper Functions | |
141 */ | |
142 static Lisp_Object make_xlfd_font_regexp (void); | |
143 static void string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os); | |
144 | |
145 /* | |
146 extract the C representation of the Lisp string STR and convert it | |
147 to the encoding used by the Fontconfig API for property and font | |
148 names. I suppose that Qnative is the right encoding, the manual | |
149 doesn't say much about this topic. This functions assumes that STR | |
150 is a Lisp string. | |
151 */ | |
152 #define extract_fcapi_string(str) \ | |
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153 (LISP_STRING_TO_EXTERNAL ((str), Qfc_font_name_encoding)) |
3354 | 154 |
3906 | 155 #define build_fcapi_string(str) \ |
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156 (build_extstring ((Extbyte *) (str), Qfc_font_name_encoding)) |
3906 | 157 |
3360 | 158 /* #### This homebrew lashup should be replaced with FcConstants. |
159 | |
160 fontconfig assumes that objects (property names) are statically allocated, | |
3354 | 161 and you will get bizarre results if you pass Lisp string data or strings |
162 allocated on the stack as objects. fontconfig _does_ copy values, so we | |
163 (I hope) don't have to worry about that member. | |
164 | |
165 Probably these functions don't get called so often that the memory leak | |
166 due to strdup'ing every time we add a property would matter, but XEmacs | |
167 _is_ a long-running process. So we hash them. | |
168 | |
169 I suspect that using symbol names or even keywords does not provide | |
170 assurance that the string won't move in memory. So we hash them | |
3360 | 171 ourselves; hash.c hashtables do not interpret the value pointers. |
172 | |
173 This array should be FcChar8**, but GCC 4.x bitches about signedness. */ | |
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174 static const Extbyte *fc_standard_properties[] = |
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175 { |
3360 | 176 /* treated specially, ordered first */ |
177 "family", "size", | |
178 /* remaining are alphabetized by group */ | |
179 /* standard properties in fontconfig and Xft v.2 */ | |
180 "antialias", "aspect", "autohint", "charset", "dpi", "file", | |
3354 | 181 "foundry", "ftface", "globaladvance", "hinting", "index", "lang", |
182 "minspace", "outline", "pixelsize", "rasterizer", "rgba", "scalable", | |
3360 | 183 "scale", "slant", "spacing", "style", "verticallayout", "weight", |
184 /* common in modern fonts */ | |
185 "fontformat", "fontversion", | |
3354 | 186 /* obsolete after Xft v. 1 */ |
187 "charwidth", "charheight", "core", "encoding", "render" | |
188 }; | |
189 | |
190 static struct hash_table *fc_property_name_hash_table; | |
191 | |
192 /* #### Maybe fc_intern should be exposed to LISP? The idea is that | |
193 fc-pattern-add could warn or error if the property isn't interned. */ | |
194 | |
3469 | 195 static const Extbyte * |
3354 | 196 fc_intern (Lisp_Object property) |
197 { | |
198 const void *dummy; | |
3469 | 199 const Extbyte *prop = extract_fcapi_string (property); |
3354 | 200 const void *val = gethash (prop, fc_property_name_hash_table, &dummy); |
201 | |
202 /* extract_fcapi_string returns something alloca'd | |
203 so we can just drop the old value of prop on the floor */ | |
204 if (val) | |
3469 | 205 prop = (const Extbyte *) val; |
3354 | 206 else |
207 { | |
3469 | 208 prop = (const Extbyte *) FcStrCopy ((FcChar8 *) prop); |
3354 | 209 puthash (prop, NULL, fc_property_name_hash_table); |
210 } | |
211 return prop; | |
212 } | |
213 | |
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214 DEFUN ("fc-pattern-p", Ffc_pattern_p, 1, 1, 0, /* |
3354 | 215 Returns t if OBJECT is of type fc-pattern, nil otherwise. |
216 */ | |
217 (object)) | |
218 { | |
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219 return FC_PATTERNP (object) ? Qt : Qnil; |
3354 | 220 } |
221 | |
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222 DEFUN ("fc-pattern-create", Ffc_pattern_create, 0, 0, 0, /* |
3354 | 223 Return a new, empty fc-pattern object. |
224 */ | |
225 ()) | |
226 { | |
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227 fc_pattern *fcpat = XFC_PATTERN (ALLOC_NORMAL_LISP_OBJECT (fc_pattern)); |
3354 | 228 |
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229 fcpat->fcpatPtr = FcPatternCreate (); |
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230 return wrap_fc_pattern (fcpat); |
3354 | 231 } |
232 | |
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233 DEFUN ("fc-name-parse", Ffc_name_parse, 1, 1, 0, /* |
3354 | 234 Parse an Fc font name and return its representation as a fc pattern object. |
235 */ | |
236 (name)) | |
237 { | |
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238 fc_pattern *fcpat = XFC_PATTERN (ALLOC_NORMAL_LISP_OBJECT (fc_pattern)); |
3354 | 239 |
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240 CHECK_STRING (name); |
3354 | 241 |
3469 | 242 fcpat->fcpatPtr = FcNameParse ((FcChar8 *) extract_fcapi_string (name)); |
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243 return wrap_fc_pattern (fcpat); |
3354 | 244 } |
245 | |
246 /* #### Ga-a-ack! Xft's similar function is actually a different API. | |
247 We provide both. */ | |
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248 DEFUN ("fc-name-unparse", Ffc_name_unparse, 1, 1, 0, /* |
3354 | 249 Unparse an fc pattern object to a string. |
250 */ | |
251 (pattern)) | |
252 { | |
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253 FcChar8 *name; |
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254 Lisp_Object result; |
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255 CHECK_FC_PATTERN (pattern); |
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256 name = FcNameUnparse (XFC_PATTERN_PTR (pattern)); |
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257 result = build_fcapi_string (name); |
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258 xfree (name); |
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259 return result; |
3354 | 260 } |
261 | |
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262 DEFUN ("fc-pattern-duplicate", Ffc_pattern_duplicate, 1, 1, 0, /* |
3354 | 263 Make a copy of the fc pattern object PATTERN and return it. |
264 */ | |
265 (pattern)) | |
266 { | |
267 struct fc_pattern *copy = NULL; | |
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268 CHECK_FC_PATTERN (pattern); |
3354 | 269 |
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270 copy = XFC_PATTERN (ALLOC_NORMAL_LISP_OBJECT (fc_pattern)); |
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271 copy->fcpatPtr = FcPatternDuplicate (XFC_PATTERN_PTR (pattern)); |
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272 return wrap_fc_pattern (copy); |
3354 | 273 } |
274 | |
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275 DEFUN ("fc-pattern-add", Ffc_pattern_add, 3, 3, 0, /* |
3354 | 276 Add attributes to the pattern object PATTERN. PROPERTY is a string naming |
277 the attribute to add, VALUE the value for this attribute. | |
278 | |
279 VALUE may be a string, integer, float, or symbol, in which case the value | |
280 will be added as an FcChar8[], int, double, or FcBool respectively. | |
281 */ | |
282 (pattern, property, value)) | |
283 { | |
284 Bool res = 0; | |
3469 | 285 const Extbyte *obj; |
3354 | 286 FcPattern *fcpat; |
287 | |
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288 CHECK_FC_PATTERN (pattern); |
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289 CHECK_STRING (property); |
3354 | 290 |
291 obj = fc_intern (property); | |
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292 fcpat = XFC_PATTERN_PTR (pattern); |
3354 | 293 |
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294 if (STRINGP (value)) |
3354 | 295 { |
296 FcChar8 *str = (FcChar8 *) extract_fcapi_string (value); | |
297 res = FcPatternAddString (fcpat, obj, str); | |
298 } | |
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299 else if (INTP (value)) |
3354 | 300 { |
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301 res = FcPatternAddInteger (fcpat, obj, XINT (value)); |
3354 | 302 } |
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303 else if (FLOATP (value)) |
3354 | 304 { |
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305 res = FcPatternAddDouble (fcpat, obj, (double) XFLOAT_DATA (value)); |
3354 | 306 } |
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307 else if (SYMBOLP (value)) |
3354 | 308 { |
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309 res = FcPatternAddBool (fcpat, obj, !NILP (value)); |
3354 | 310 } |
311 /* else ... maybe we should wta here? */ | |
312 | |
313 return res ? Qt : Qnil; | |
314 } | |
315 | |
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316 DEFUN ("fc-pattern-del", Ffc_pattern_del, 2, 2, 0, /* |
3354 | 317 Remove attribute PROPERTY from fc pattern object OBJECT. |
318 */ | |
319 (pattern, property)) | |
320 { | |
321 Bool res; | |
322 | |
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323 CHECK_FC_PATTERN (pattern); |
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324 CHECK_STRING (property); |
3354 | 325 |
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326 res = FcPatternDel (XFC_PATTERN_PTR (pattern), extract_fcapi_string (property)); |
3354 | 327 return res ? Qt : Qnil; |
328 } | |
329 | |
330 /* Generic interface to FcPatternGet() | |
331 * Don't support the losing symbol-for-property interface. | |
332 */ | |
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333 DEFUN ("fc-pattern-get", Ffc_pattern_get, 2, 4, 0, /* |
3354 | 334 From PATTERN, extract PROPERTY for the ID'th member, of type TYPE. |
335 | |
336 PATTERN is an Xft (fontconfig) pattern object. | |
337 PROPERTY is a string naming an fontconfig font property. | |
338 Optional ID is a nonnegative integer indexing the list of values for PROPERTY | |
339 stored in PATTERN, defaulting to 0 (the first value). | |
340 Optional TYPE is a symbol, one of 'string, 'boolean, 'integer, 'float, | |
341 'double, 'matrix, 'charset, or 'void, corresponding to the FcValue types. | |
342 ('float is an alias for 'double). | |
343 | |
344 The Lisp types returned will conform to TYPE: | |
345 string string | |
346 boolean `t' or `nil' | |
347 integer integer | |
348 double (float) float | |
349 matrix not implemented | |
350 charset not implemented | |
351 void not implemented | |
352 | |
353 Symbols with names of the form "fc-result-DESCRIPTION" are returned when | |
354 the desired value is not available. These are | |
355 | |
356 fc-result-type-mismatch the value found has an unexpected type | |
357 fc-result-no-match there is no such attribute | |
358 fc-result-no-id there is no value for the requested ID | |
359 | |
360 The types of the following standard properties are predefined by fontconfig. | |
361 The symbol 'fc-result-type-mismatch will be returned if the object exists but | |
362 TYPE does not match the predefined type. It is best not to specify a type | |
363 for predefined properties, as a mistake here ensures error returns on the | |
364 correct type. | |
365 | |
366 Each standard property has a convenience accessor defined in fontconfig.el, | |
367 named in the form "fc-pattern-get-PROPERTY". The convenience functions are | |
368 preferred to `fc-pattern-get' since a typo in the string naming a property | |
369 will result in a silent null return, while a typo in a function name will | |
370 usually result in a compiler or runtime \"not fboundp\" error. You may use | |
371 `defsubst' to define convenience functions for non-standard properties. | |
372 | |
373 family String Font family name | |
374 style String Font style. Overrides weight and slant | |
375 slant Int Italic, oblique or roman | |
376 weight Int Light, medium, demibold, bold or black | |
377 size Double Point size | |
378 aspect Double Stretches glyphs horizontally before hinting | |
379 pixelsize Double Pixel size | |
380 spacing Int Proportional, monospace or charcell | |
381 foundry String Font foundry name | |
382 antialias Bool Whether glyphs can be antialiased | |
383 hinting Bool Whether the rasterizer should use hinting | |
384 verticallayout Bool Use vertical layout | |
385 autohint Bool Use autohinter instead of normal hinter | |
386 globaladvance Bool Use font global advance data | |
387 file String The filename holding the font | |
388 index Int The index of the font within the file | |
389 ftface FT_Face Use the specified FreeType face object | |
390 rasterizer String Which rasterizer is in use | |
391 outline Bool Whether the glyphs are outlines | |
392 scalable Bool Whether glyphs can be scaled | |
393 scale Double Scale factor for point->pixel conversions | |
394 dpi Double Target dots per inch | |
395 rgba Int unknown, rgb, bgr, vrgb, vbgr, none - subpixel geometry | |
396 minspace Bool Eliminate leading from line spacing | |
397 charset CharSet Unicode chars encoded by the font | |
398 lang String List of RFC-3066-style languages this font supports | |
399 | |
400 The FT_Face, Matrix, CharSet types are unimplemented, so the corresponding | |
401 properties are not accessible from Lisp at this time. If the value of a | |
402 property returned has type FT_Face, FcCharSet, or FcMatrix, | |
403 `fc-result-type-mismatch' is returned. | |
404 | |
405 The following properties which were standard in Xft v.1 are obsolete in | |
406 Xft v.2: encoding, charwidth, charheight, core, and render. */ | |
407 (pattern, property, id, type)) | |
408 { | |
3469 | 409 Extbyte *fc_property; |
3354 | 410 FcResult fc_result; |
411 FcValue fc_value; | |
412 | |
413 /* | |
414 process arguments | |
415 */ | |
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416 CHECK_FC_PATTERN (pattern); |
3354 | 417 |
418 #if 0 | |
419 /* Don't support the losing symbol-for-property interface. */ | |
420 property = SYMBOLP (property) ? symbol_name (XSYMBOL (property)) : property; | |
421 #endif | |
422 if (STRINGP (property)) | |
423 { | |
3469 | 424 fc_property = extract_fcapi_string (property); |
3354 | 425 } |
426 else | |
427 { | |
428 /* if we allow symbols, this would need to be | |
429 list3 (Qlambda, list1 (Qobject), | |
430 list3 (Qor, list2 (Qstringp, Qobject), | |
431 list2 (Qsymbolp, Qobject))) | |
432 or something like that? */ | |
433 dead_wrong_type_argument (Qstringp, property); | |
434 } | |
435 | |
436 if (!NILP (id)) CHECK_NATNUM (id); | |
437 if (!NILP (type)) CHECK_SYMBOL (type); | |
438 | |
439 /* get property */ | |
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440 fc_result = FcPatternGet (XFC_PATTERN_PTR (pattern), |
3354 | 441 fc_property, |
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442 NILP (id) ? 0 : XINT (id), |
3354 | 443 &fc_value); |
444 | |
445 switch (fc_result) | |
446 { | |
447 case FcResultMatch: | |
448 /* wrap it and return */ | |
449 switch (fc_value.type) | |
450 { | |
451 case FcTypeInteger: | |
452 return ((!NILP (type) && !EQ (type, Qinteger)) | |
453 ? Qfc_result_type_mismatch : make_int (fc_value.u.i)); | |
454 case FcTypeDouble: | |
455 return ((!NILP (type) && !EQ (type, intern ("double")) | |
456 && !EQ (type, Qfloat)) | |
457 ? Qfc_result_type_mismatch : make_float (fc_value.u.d)); | |
458 case FcTypeString: | |
459 return ((!NILP (type) && !EQ (type, Qstring)) | |
460 ? Qfc_result_type_mismatch | |
3906 | 461 : build_fcapi_string (fc_value.u.s)); |
3354 | 462 case FcTypeBool: |
463 return ((!NILP (type) && !EQ (type, Qboolean)) | |
464 ? Qfc_result_type_mismatch : fc_value.u.b ? Qt : Qnil); | |
465 case FcTypeMatrix: | |
466 return Qfc_result_type_mismatch; | |
467 /* #### unimplemented | |
468 return ((!NILP (type) && !EQ (type, intern ("matrix"))) | |
469 ? Qfc_result_type_mismatch : make_int (fc_value.u.m)); | |
470 */ | |
471 case FcTypeCharSet: | |
472 return Qfc_result_type_mismatch; | |
473 /* #### unimplemented | |
474 return ((!NILP (type) && !EQ (type, intern ("charset"))) | |
475 ? Qfc_result_type_mismatch : make_int (fc_value.u.c)); | |
476 */ | |
477 } | |
478 case FcResultTypeMismatch: | |
479 return Qfc_result_type_mismatch; | |
480 case FcResultNoMatch: | |
481 return Qfc_result_no_match; | |
482 case FcResultNoId: | |
483 return Qfc_result_no_id; | |
484 default: | |
485 return Qfc_internal_error; | |
486 } | |
487 } | |
488 | |
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489 /* FcConfig handling functions. */ |
3354 | 490 |
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491 /* We obviously need to be careful about garbage collecting the current |
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492 FcConfig. I infer from the documentation of FcConfigDestroy that that |
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493 is the only reference maintained by fontconfig. |
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494 So we keep track of our own references on a weak list, and only cons a |
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495 new object if we don't already have a reference to it there. */ |
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496 |
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497 enum DestroyFontsetP { DestroyNo = 0, DestroyYes = 1 }; |
3354 | 498 |
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499 static Lisp_Object |
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500 fc_config_create_using (FcConfig * (*create_function) (void)) |
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501 { |
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502 FcConfig *fc = (*create_function) (); |
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503 Lisp_Object configs = XWEAK_LIST_LIST (Vfc_config_weak_list); |
3354 | 504 |
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505 /* Linear search: fc_configs are not going to multiply like conses. */ |
3360 | 506 { |
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507 LIST_LOOP_2 (cfg, configs) |
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508 if (fc == XFC_CONFIG_PTR (cfg)) |
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509 return cfg; |
3360 | 510 } |
511 | |
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512 { |
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513 fc_config *fccfg = XFC_CONFIG (ALLOC_NORMAL_LISP_OBJECT (fc_config)); |
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514 fccfg->fccfgPtr = fc; |
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515 configs = Fcons (wrap_fc_config (fccfg), configs); |
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516 XWEAK_LIST_LIST (Vfc_config_weak_list) = configs; |
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517 return wrap_fc_config (fccfg); |
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518 } |
3354 | 519 } |
520 | |
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521 static Lisp_Object |
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522 fc_strlist_to_lisp_using (FcStrList * (*getter) (FcConfig *), |
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523 Lisp_Object config) |
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524 { |
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525 FcChar8 *thing; |
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526 Lisp_Object value = Qnil; |
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527 FcStrList *thing_list; |
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528 |
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529 CHECK_FC_CONFIG (config); |
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530 thing_list = (*getter) (XFC_CONFIG_PTR (config)); |
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531 /* Yes, we need to do this check -- sheesh, Keith! */ |
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532 if (!thing_list) |
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533 return Qnil; |
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534 while ((thing = FcStrListNext (thing_list))) |
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535 value = Fcons (build_fcapi_string (thing), value); |
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536 FcStrListDone (thing_list); |
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537 return value; |
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538 } |
3931 | 539 |
3354 | 540 static Lisp_Object |
3931 | 541 fontset_to_list (FcFontSet *fontset, enum DestroyFontsetP destroyp) |
3354 | 542 { |
543 int idx; | |
544 Lisp_Object fontlist = Qnil; | |
545 fc_pattern *fcpat; | |
546 | |
547 /* #### improve this error message */ | |
548 if (!fontset) | |
4860 | 549 invalid_state ("failed to create FcFontSet", Qunbound); |
3354 | 550 for (idx = 0; idx < fontset->nfont; ++idx) |
551 { | |
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552 fcpat = XFC_PATTERN (ALLOC_NORMAL_LISP_OBJECT (fc_pattern)); |
3354 | 553 fcpat->fcpatPtr = FcPatternDuplicate (fontset->fonts[idx]); |
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554 fontlist = Fcons (wrap_fc_pattern (fcpat), fontlist); |
3354 | 555 } |
3931 | 556 if (destroyp) |
557 FcFontSetDestroy (fontset); | |
3354 | 558 return fontlist; |
559 } | |
560 | |
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561 DEFUN ("fc-config-p", Ffc_config_p, 1, 1, 0, /* |
3931 | 562 Returns t if OBJECT is of type fc-config, nil otherwise. |
563 */ | |
564 (object)) | |
565 { | |
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566 return FC_CONFIGP (object) ? Qt : Qnil; |
3931 | 567 } |
568 | |
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569 DEFUN ("fc-config-create", Ffc_config_create, 0, 0, 0, /* |
3931 | 570 -- Function: FcConfig *FcConfigCreate (void) |
571 Creates an empty configuration. */ | |
572 ()) | |
573 { | |
574 return fc_config_create_using (&FcConfigCreate); | |
575 } | |
576 | |
577 #if 0 | |
578 /* I'm sorry, but we just don't do this in Lisp, OK? | |
579 Don't even think about implementing this. */ | |
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580 DEFUN ("fc-config-destroy", Ffc_config_destroy, 1, 1, 0, /* |
3931 | 581 -- Function: void FcConfigDestroy (FcConfig *config) |
582 Destroys a configuration and any data associated with it. Note | |
583 that calling this function with the return value from | |
584 FcConfigGetCurrent will place the library in an indeterminate | |
585 state. */ | |
586 (config)) | |
587 { | |
588 signal_error (Qunimplemented, "No user-servicable parts!", | |
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589 intern ("fc-config-destroy")); |
3931 | 590 } |
591 #endif | |
592 | |
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593 DEFUN ("fc-config-up-to-date", Ffc_config_up_to_date, 1, 1, 0, /* |
3931 | 594 -- Function: FcBool FcConfigUptoDate (FcConfig *config) |
595 Checks all of the files related to 'config' and returns whether the | |
596 in-memory version is in sync with the disk version. */ | |
597 (config)) | |
598 { | |
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599 CHECK_FC_CONFIG (config); |
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600 return FcConfigUptoDate (XFC_CONFIG_PTR (config)) == FcFalse ? Qnil : Qt; |
3931 | 601 } |
602 | |
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603 DEFUN ("fc-config-build-fonts", Ffc_config_build_fonts, 1, 1, 0, /* |
3931 | 604 -- Function: FcBool FcConfigBuildFonts (FcConfig *config) |
605 Builds the set of available fonts for the given configuration. | |
606 Note that any changes to the configuration after this call have | |
607 indeterminate effects. Returns FcFalse if this operation runs out | |
608 of memory. | |
609 XEmacs: signal out-of-memory, or return nil on success. */ | |
610 (config)) | |
611 { | |
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612 CHECK_FC_CONFIG (config); |
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613 if (FcConfigBuildFonts (XFC_CONFIG_PTR (config)) == FcFalse) |
3931 | 614 out_of_memory ("FcConfigBuildFonts failed", config); |
615 return Qnil; | |
616 } | |
617 | |
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618 DEFUN ("fc-config-get-config-dirs", Ffc_config_get_config_dirs, 1, 1, 0, /* |
3931 | 619 -- Function: FcStrList *FcConfigGetConfigDirs (FcConfig *config) |
620 Returns the list of font directories specified in the | |
621 configuration files for 'config'. Does not include any | |
622 subdirectories. */ | |
623 (config)) | |
624 { | |
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625 return fc_strlist_to_lisp_using (&FcConfigGetConfigDirs, config); |
3931 | 626 } |
627 | |
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628 DEFUN ("fc-config-get-font-dirs", Ffc_config_get_font_dirs, 1, 1, 0, /* |
3931 | 629 -- Function: FcStrList *FcConfigGetFontDirs (FcConfig *config) |
630 Returns the list of font directories in 'config'. This includes the | |
631 configured font directories along with any directories below those | |
632 in the filesystem. */ | |
633 (config)) | |
634 { | |
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635 return fc_strlist_to_lisp_using (&FcConfigGetFontDirs, config); |
3931 | 636 } |
637 | |
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638 DEFUN ("fc-config-get-config-files", Ffc_config_get_config_files, 1, 1, 0, /* |
3931 | 639 -- Function: FcStrList *FcConfigGetConfigFiles (FcConfig *config) |
640 Returns the list of known configuration files used to generate | |
641 'config'. Note that this will not include any configuration done | |
642 with FcConfigParse. */ | |
643 (config)) | |
644 { | |
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645 return fc_strlist_to_lisp_using (&FcConfigGetConfigFiles, config); |
3931 | 646 } |
647 | |
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648 DEFUN ("fc-config-get-cache", Ffc_config_get_cache, 1, 1, 0, /* |
3931 | 649 -- Function: char *FcConfigGetCache (FcConfig *config) |
650 Returns the name of the file used to store per-user font | |
651 information. */ | |
652 (config)) | |
653 { | |
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654 CHECK_FC_CONFIG (config); |
3931 | 655 /* Surely FcConfigGetCache just casts an FcChar8* to char*. */ |
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656 return build_fcapi_string ((FcChar8 *) FcConfigGetCache (XFC_CONFIG_PTR (config))); |
3931 | 657 } |
658 | |
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659 DEFUN ("fc-config-get-fonts", Ffc_config_get_fonts, 2, 2, 0, /* |
3931 | 660 -- Function: FcFontSet *FcConfigGetFonts (FcConfig *config, FcSetName set) |
661 Returns one of the two sets of fonts from the configuration as | |
662 specified by 'set'. | |
663 `FcSetName' | |
664 Specifies one of the two sets of fonts available in a | |
665 configuration; FcSetSystem for those fonts specified in the | |
666 configuration and FcSetApplication which holds fonts provided by | |
667 the application. */ | |
668 (config, set)) | |
669 { | |
670 FcSetName name = FcSetSystem; | |
671 FcFontSet *fs = NULL; | |
672 | |
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673 CHECK_FC_CONFIG (config); |
3931 | 674 CHECK_SYMBOL (set); |
675 | |
676 if (EQ (set, intern ("fc-set-system"))) | |
677 name = FcSetSystem; | |
678 else if (EQ (set, intern ("fc-set-application"))) | |
679 name = FcSetApplication; | |
680 else | |
681 wtaerror ("must be in (fc-set-system fc-set-application)", set); | |
682 | |
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683 fs = FcConfigGetFonts (XFC_CONFIG_PTR (config), name); |
3931 | 684 return fs ? fontset_to_list (fs, DestroyNo) : Qnil; |
685 } | |
686 | |
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687 DEFUN ("fc-config-set-current", Ffc_config_set_current, 1, 1, 0, /* |
3931 | 688 -- Function: FcBool FcConfigSetCurrent (FcConfig *config) |
689 Sets the current default configuration to 'config'. Implicitly | |
690 calls FcConfigBuildFonts if necessary, returning FcFalse if that | |
691 call fails. | |
692 XEmacs: signals out-of-memory if FcConfigBuildFonts fails, or args-out-of-range | |
693 if the resulting FcConfig has no fonts (which would crash XEmacs if installed). | |
694 */ | |
695 (config)) | |
696 { | |
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697 CHECK_FC_CONFIG (config); |
3931 | 698 /* *sigh* "Success" DOES NOT mean you have any fonts available. It is |
699 easy to crash fontconfig, and XEmacs with it. Without the following | |
700 check, this will do it: | |
701 (progn | |
702 (fc-config-set-current (fc-config-create)) | |
703 (set-face-font 'default "serif-12")) | |
704 */ | |
705 | |
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706 if (FcConfigBuildFonts (XFC_CONFIG_PTR (config)) == FcFalse) |
3931 | 707 out_of_memory ("FcConfigBuildFonts failed", config); |
708 /* #### We'd like to avoid this consing, and FcConfigGetFonts sometimes | |
709 returns NULL, but it doesn't always. This will do for now .... */ | |
710 if (NILP (Ffc_config_get_fonts (config, intern ("fc-set-system"))) | |
711 && NILP (Ffc_config_get_fonts (config, intern ("fc-set-application")))) | |
712 signal_error (intern ("args-out-of-range"), "no fonts found", config); | |
713 /* Should never happen, but I don't trust Keith anymore .... */ | |
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714 if (FcConfigSetCurrent (XFC_CONFIG_PTR (config)) == FcFalse) |
3931 | 715 out_of_memory ("FcConfigBuildFonts failed in set", config); |
716 return Qnil; | |
717 } | |
718 | |
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719 DEFUN ("fc-config-get-blanks", Ffc_config_get_blanks, 1, 1, 0, /* |
3931 | 720 -- Function: FcBlanks *FcConfigGetBlanks (FcConfig *config) |
721 Returns the FcBlanks object associated with the given | |
722 configuration, if no blanks were present in the configuration, | |
723 this function will return 0. | |
724 XEmacs: should convert to a chartable. | |
725 #### Unimplemented. */ | |
726 (config)) | |
727 { | |
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728 CHECK_FC_CONFIG (config); |
3931 | 729 signal_error (Qunimplemented, "no method to convert FcBlanks object", |
730 intern ("fc-config-get-blanks")); | |
731 } | |
732 | |
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733 DEFUN ("fc-config-get-rescan-interval", Ffc_config_get_rescan_interval, 1, 1, 0, /* |
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734 -- Function: int FcConfigGetRescanInterval (FcConfig *config) |
3931 | 735 Returns the interval between automatic checks of the configuration |
736 (in seconds) specified in 'config'. The configuration is checked | |
737 during a call to FcFontList when this interval has passed since | |
738 the last check. */ | |
739 (config)) | |
740 { | |
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741 CHECK_FC_CONFIG (config); |
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742 return make_int (FcConfigGetRescanInterval (XFC_CONFIG_PTR (config))); |
3931 | 743 } |
744 | |
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745 DEFUN ("fc-config-set-rescan-interval", Ffc_config_set_rescan_interval, 2, 2, 0, /* |
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746 -- Function: FcBool FcConfigSetRescanInterval (FcConfig *config, int |
3931 | 747 rescanInterval) |
748 Sets the rescan interval; returns FcFalse if an error occurred. | |
749 XEmacs: signal such error, or return nil on success. */ | |
750 (config, rescan_interval)) | |
751 { | |
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752 CHECK_FC_CONFIG (config); |
3931 | 753 CHECK_INT (rescan_interval); |
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754 if (FcConfigSetRescanInterval (XFC_CONFIG_PTR (config), |
3931 | 755 XINT (rescan_interval)) == FcFalse) |
756 signal_error (Qio_error, "FcConfigSetRescanInverval barfed", | |
757 intern ("fc-config-set-rescan-interval")); | |
758 return Qnil; | |
759 } | |
760 | |
761 /* #### This might usefully be made interactive. */ | |
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762 DEFUN ("fc-config-app-font-add-file", Ffc_config_app_font_add_file, 2, 2, 0, /* |
3931 | 763 -- Function: FcBool FcConfigAppFontAddFile (FcConfig *config, const |
764 char *file) | |
765 Adds an application-specific font to the configuration. */ | |
766 (config, file)) | |
767 { | |
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768 CHECK_FC_CONFIG (config); |
3931 | 769 CHECK_STRING (file); |
770 if (FcConfigAppFontAddFile | |
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771 (XFC_CONFIG_PTR (config), |
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772 /* #### FIXME! is Qfile_name right? */ |
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773 (FcChar8 *) LISP_STRING_TO_EXTERNAL (file, Qfile_name)) == FcFalse) |
3931 | 774 return Qnil; |
775 else | |
776 return Qt; | |
777 } | |
778 | |
779 /* #### This might usefully be made interactive. */ | |
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780 DEFUN ("fc-config-app-font-add-dir", Ffc_config_app_font_add_dir, 2, 2, 0, /* |
3931 | 781 -- Function: FcBool FcConfigAppFontAddDir (FcConfig *config, const |
782 char *dir) | |
783 Scans the specified directory for fonts, adding each one found to | |
784 the application-specific set of fonts. */ | |
785 (config, dir)) | |
786 { | |
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787 CHECK_FC_CONFIG (config); |
3931 | 788 CHECK_STRING (dir); |
789 if (FcConfigAppFontAddDir | |
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790 (XFC_CONFIG_PTR (config), |
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791 /* #### FIXME! is Qfile_name right? */ |
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792 (FcChar8 *) LISP_STRING_TO_EXTERNAL (dir, Qfile_name)) == FcFalse) |
3931 | 793 return Qnil; |
794 else | |
795 return Qt; | |
796 } | |
797 | |
798 /* #### This might usefully be made interactive. */ | |
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799 DEFUN ("fc-config-app-font-clear", Ffc_config_app_font_clear, 1, 1, 0, /* |
3931 | 800 -- Function: void FcConfigAppFontClear (FcConfig *config) |
801 Clears the set of application-specific fonts. */ | |
802 (config)) | |
803 { | |
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804 CHECK_FC_CONFIG (config); |
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805 FcConfigAppFontClear (XFC_CONFIG_PTR (config)); |
3931 | 806 return Qnil; |
807 } | |
808 | |
809 /* These functions provide some control over how the default | |
810 configuration of the library is initialized. (This configuration is | |
811 normally implicitly initialized.) */ | |
812 | |
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813 DEFUN ("fc-config-filename", Ffc_config_filename, 1, 1, 0, /* |
3931 | 814 -- Function: char *FcConfigFilename (const char *name) |
815 Given the specified external entity name, return the associated | |
816 filename. This provides applications a way to convert various | |
817 configuration file references into filename form. | |
818 | |
819 A null or empty 'name' indicates that the default configuration | |
820 file should be used; which file this references can be overridden | |
821 with the FC_CONFIG_FILE environment variable. Next, if the name | |
822 starts with '~', it refers to a file in the current users home | |
823 directory. Otherwise if the name doesn't start with '/', it | |
824 refers to a file in the default configuration directory; the | |
825 built-in default directory can be overridden with the | |
826 FC_CONFIG_DIR environment variable. */ | |
827 (name)) | |
828 { | |
4932 | 829 const Ascbyte *fcname = ""; |
3931 | 830 |
831 if (!NILP (name)) | |
832 { | |
833 CHECK_STRING (name); | |
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834 /* #### FIXME! is Qfile_name right? */ |
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835 LISP_PATHNAME_CONVERT_OUT (name, fcname); |
3931 | 836 } |
837 return (build_fcapi_string (FcConfigFilename ((FcChar8 *) fcname))); | |
838 } | |
839 | |
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840 DEFUN ("fc-init-load-config", Ffc_init_load_config, 0, 0, 0, /* |
3931 | 841 -- Function: FcConfig *FcInitLoadConfig (void) |
842 Loads the default configuration file and returns the resulting | |
843 configuration. Does not load any font information. */ | |
844 ()) | |
845 { | |
846 return fc_config_create_using (&FcInitLoadConfig); | |
847 } | |
848 | |
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849 DEFUN ("fc-init-load-config-and-fonts", Ffc_init_load_config_and_fonts, 0, 0, 0, /* |
3931 | 850 -- Function: FcConfig *FcInitLoadConfigAndFonts (void) |
851 Loads the default configuration file and builds information about | |
852 the available fonts. Returns the resulting configuration. */ | |
853 ()) | |
854 { | |
855 return fc_config_create_using (&FcInitLoadConfigAndFonts); | |
856 } | |
857 | |
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858 DEFUN ("fc-config-get-current", Ffc_config_get_current, 0, 0, 0, /* |
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859 -- Function: FcConfig *FcConfigGetCurrent (void) |
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860 Returns the current default configuration. */ |
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861 ()) |
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862 { |
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863 return fc_config_create_using (&FcConfigGetCurrent); |
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864 } |
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865 |
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866 /* Pattern manipulation functions. */ |
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867 |
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868 DEFUN ("fc-default-substitute", Ffc_default_substitute, 1, 1, 0, /* |
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869 Adds defaults for certain attributes if not specified in PATTERN. |
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870 FcPattern PATTERN is modified in-place, and nil is returned. |
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871 * Patterns without a specified style or weight are set to Medium |
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872 * Patterns without a specified style or slant are set to Roman |
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873 * Patterns without a specified pixel size are given one computed from any |
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874 specified point size (default 12), dpi (default 75) and scale (default 1). */ |
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875 (pattern)) |
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876 { |
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877 CHECK_FC_PATTERN (pattern); |
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878 FcDefaultSubstitute (XFC_PATTERN_PTR (pattern)); |
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879 return Qnil; |
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880 } |
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881 |
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882 /* -- Function: FcBool FcConfigSubstituteWithPat (FcConfig *config, |
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883 FcPattern *p, FcPattern *p_pat FcMatchKind kind) |
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884 OMITTED: use optional arguments in `fc-config-substitute'. */ |
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885 |
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886 DEFUN ("fc-config-substitute", Ffc_config_substitute, 1, 4, 0, /* |
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887 Modifies PATTERN according to KIND and TESTPAT using operations from CONFIG. |
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888 PATTERN is modified in-place. Returns an undocumented Boolean value. |
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|
889 If optional KIND is `fc-match-pattern', then those tagged as pattern operations |
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|
890 are applied, else if KIND is `fc-match-font', those tagged as font operations |
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diff
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|
891 are applied and TESTPAT is used for <test> elements with target=pattern. KIND |
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Implement more of the fontconfig API.
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|
892 defaults to `fc-match-font'. |
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|
893 If optional TESTPAT is nil, it is ignored. Otherwise it must be an FcPattern. |
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Implement more of the fontconfig API.
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|
894 Optional CONFIG must be an FcConfig, defaulting to the current one. |
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|
895 |
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|
896 Note that this function actually corresponds to FcConfigSubstituteWithPat, and |
75975fd0b7fc
Implement more of the fontconfig API.
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|
897 the argument order is changed to take advantage of Lisp optional arguments. */ |
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Implement more of the fontconfig API.
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|
898 (pattern, kind, testpat, config)) |
75975fd0b7fc
Implement more of the fontconfig API.
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|
899 { |
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Implement more of the fontconfig API.
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|
900 FcMatchKind knd; |
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|
901 |
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|
902 /* There ought to be a standard idiom for this.... */ |
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Implement more of the fontconfig API.
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|
903 if (NILP (kind) |
4860 | 904 || EQ (kind, Qfc_match_font)) |
4758
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|
905 knd = FcMatchFont; |
4860 | 906 else if (EQ (kind, Qfc_match_pattern)) |
4758
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|
907 knd = FcMatchPattern; |
4860 | 908 else |
909 wtaerror ("need `fc-match-pattern' or `fc-match-font'", kind); | |
4758
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|
910 |
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|
911 /* Typecheck arguments */ |
5127
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|
912 CHECK_FC_PATTERN (pattern); |
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|
913 if (!NILP (testpat)) CHECK_FC_PATTERN (testpat); |
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|
914 if (!NILP (config)) CHECK_FC_CONFIG (config); |
4758
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|
915 |
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|
916 return (FcConfigSubstituteWithPat |
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|
917 (NILP (config) ? FcConfigGetCurrent () : XFC_CONFIG_PTR (config), |
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|
918 XFC_PATTERN_PTR (pattern), |
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|
919 NILP (testpat) ? NULL : XFC_PATTERN_PTR (testpat), |
4758
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920 knd) == FcTrue) |
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|
921 ? Qt : Qnil; |
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|
922 } |
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Implement more of the fontconfig API.
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|
923 |
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|
924 /* Pattern matching functions. */ |
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Implement more of the fontconfig API.
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|
925 |
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|
926 /* The following functions return fonts that match a certain pattern. |
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Implement more of the fontconfig API.
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|
927 `FcFontRenderPrepare' and `FcFontMatch' always return a single best |
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Implement more of the fontconfig API.
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|
928 match. `FcFontList' returns the list of fonts that match a given |
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Implement more of the fontconfig API.
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|
929 pattern on a certain set of properties. `FcFontSort' returns the |
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Implement more of the fontconfig API.
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|
930 entire list of fonts, sorted in order of match quality, possibly |
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Implement more of the fontconfig API.
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|
931 filtering out fonts that do not provide additional characters beyond |
75975fd0b7fc
Implement more of the fontconfig API.
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|
932 those provided by preferred fonts. */ |
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|
933 |
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|
934 DEFUN ("fc-font-render-prepare", Ffc_font_render_prepare, 2, 3, 0, /* |
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|
935 Return a new pattern blending PATTERN and FONT. |
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|
936 Optional CONFIG is an FcConfig, defaulting to the current one. |
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|
937 The returned pattern consists of elements of FONT not appearing in PATTERN, |
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|
938 elements of PATTERN not appearing in FONT, and the best matching value from |
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|
939 PATTERN for elements appearing in both. The result is passed to |
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|
940 FcConfigSubstitute with 'kind' FcMatchFont and then returned. */ |
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|
941 (pattern, font, config)) |
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|
942 { |
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|
943 if (NILP (config)) { |
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|
944 config = Ffc_config_get_current (); |
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|
945 } |
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|
946 CHECK_FC_PATTERN (pattern); |
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|
947 CHECK_FC_PATTERN (font); |
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|
948 CHECK_FC_CONFIG (config); |
4758
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|
949 |
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|
950 /* I don't think this can fail? */ |
5189
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|
951 return wrap_fc_pattern (FcFontRenderPrepare (XFC_CONFIG_PTR (config), |
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|
952 XFC_PATTERN_PTR (font), |
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|
953 XFC_PATTERN_PTR (pattern))); |
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|
954 } |
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|
955 |
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|
956 DEFUN ("fc-font-match", Ffc_font_match, 2, 3, 0, /* |
4758
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|
957 Return the font on DEVICE that most closely matches PATTERN. |
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|
958 |
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|
959 DEVICE is an X11 device. |
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|
960 PATTERN is a fontconfig pattern object. |
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|
961 Optional CONFIG is an FcConfig, defaulting to the current one. |
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|
962 Returns a fontconfig pattern object representing the closest match to the |
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963 given pattern, or an error code. Possible error codes are |
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|
964 `fc-result-no-match' and `fc-result-no-id'. |
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|
965 PATTERN is massaged with FcConfigSubstitute and FcDefaultSubstitute before |
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|
966 being processed by FcFontMatch. */ |
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|
967 (device, pattern, config)) |
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|
968 { |
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|
969 FcResult res; |
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|
970 struct fc_pattern *res_fcpat; |
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|
971 FcPattern *p; |
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|
972 FcConfig *fcc; |
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|
973 |
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|
974 CHECK_FC_PATTERN (pattern); |
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|
975 if (NILP (device)) |
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976 return Qnil; |
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|
977 CHECK_X_DEVICE (device); |
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|
978 if (!DEVICE_LIVE_P (XDEVICE (device))) |
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979 return Qnil; |
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|
980 if (!NILP (config)) |
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|
981 CHECK_FC_CONFIG (config); |
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|
982 |
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|
983 res_fcpat = XFC_PATTERN (ALLOC_NORMAL_LISP_OBJECT (fc_pattern)); |
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|
984 p = XFC_PATTERN_PTR (pattern); |
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|
985 fcc = NILP (config) ? FcConfigGetCurrent () : XFC_CONFIG_PTR (config); |
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|
986 |
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|
987 FcConfigSubstitute (fcc, p, FcMatchPattern); |
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|
988 FcDefaultSubstitute (p); |
4809
0d3ccd5a2509
Initialize the result variable passed to FcFontMatch. See xemacs-patches
Jerry James <james@xemacs.org>
parents:
4799
diff
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|
989 res = FcResultMatch; |
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990 res_fcpat->fcpatPtr = FcFontMatch (fcc, p, &res); |
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991 |
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992 if (res_fcpat->fcpatPtr == NULL) |
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|
993 switch (res) |
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|
994 { |
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|
995 case FcResultNoMatch: |
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996 return Qfc_result_no_match; |
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997 case FcResultNoId: |
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998 return Qfc_result_no_id; |
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|
999 default: |
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1000 return Qfc_internal_error; |
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|
1001 } |
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1002 else |
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1003 return wrap_fc_pattern (res_fcpat); |
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|
1004 } |
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|
1005 |
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|
1006 /* #### fix this name to correspond to Ben's new nomenclature */ |
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|
1007 DEFUN ("fc-list-fonts-pattern-objects", Ffc_list_fonts_pattern_objects, |
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1008 3, 3, 0, /* |
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1009 Return a list of fonts on DEVICE that match PATTERN for PROPERTIES. |
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1010 Each font is represented by a fontconfig pattern object. |
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1011 |
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1012 DEVICE is an X11 device. |
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1013 PATTERN is a fontconfig pattern to be matched. |
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1014 PROPERTIES is a list of property names (strings) that should match. |
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1015 |
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1016 #### DEVICE is unused, ignored, and may be removed if it's not needed to |
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1017 match other font-listing APIs. */ |
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1018 (UNUSED (device), pattern, properties)) |
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1019 { |
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1020 FcObjectSet *os; |
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1021 FcFontSet *fontset; |
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1022 |
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1023 CHECK_FC_PATTERN (pattern); |
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1024 CHECK_LIST (properties); |
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1025 |
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1026 os = FcObjectSetCreate (); |
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1027 string_list_to_fcobjectset (properties, os); |
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1028 /* #### why don't we need to do the "usual substitutions"? */ |
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1029 fontset = FcFontList (NULL, XFC_PATTERN_PTR (pattern), os); |
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1030 FcObjectSetDestroy (os); |
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1031 |
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1032 return fontset_to_list (fontset, DestroyYes); |
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1033 |
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1034 } |
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1035 |
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1036 /* #### maybe this can/should be folded into fc-list-fonts-pattern-objects? */ |
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1037 DEFUN ("fc-font-sort", Ffc_font_sort, 2, 4, 0, /* |
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1038 Return a list of all fonts sorted by proximity to PATTERN. |
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1039 Each font is represented by a fontconfig pattern object. |
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1040 |
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1041 DEVICE is an X11 device. |
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1042 PATTERN is a fontconfig pattern to be matched. |
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1043 Optional argument TRIM, if non-nil, means to trim trailing fonts that do not |
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1044 contribute new characters to the union repertoire. |
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1045 |
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1046 #### Optional argument NOSUB, if non-nil, suppresses some of the usual |
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1047 property substitutions. DON'T USE THIS in production code, it is intended |
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1048 for exploring behavior of fontconfig and will be removed when this code is |
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1049 stable. |
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1050 |
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1051 #### DEVICE is unused, ignored, and may be removed if it's not needed to |
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1052 match other font-listing APIs. */ |
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1053 (UNUSED (device), pattern, trim, nosub)) |
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1054 { |
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1055 CHECK_FC_PATTERN (pattern); |
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1056 |
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1057 { |
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1058 FcConfig *fcc = FcConfigGetCurrent(); |
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1059 FcFontSet *fontset; |
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1060 FcPattern *p = XFC_PATTERN_PTR (pattern); |
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1061 FcResult fcresult; |
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1062 |
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1063 if (NILP (nosub)) /* #### temporary debug hack */ |
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1064 FcDefaultSubstitute (p); |
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1065 FcConfigSubstitute (fcc, p, FcMatchPattern); |
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1066 fontset = FcFontSort (fcc, p, !NILP (trim), NULL, &fcresult); |
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1067 |
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1068 return fontset_to_list (fontset, DestroyYes); |
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1069 } |
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1070 } |
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1071 |
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1072 #ifdef FONTCONFIG_EXPOSE_CONFIG |
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1073 |
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1074 /* Configuration routines --- for debugging |
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1075 Don't depend on these routines being available in the future! |
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1076 |
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1077 3.2.10 Initialization |
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1078 --------------------- |
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1079 |
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1080 An FcConfig object holds the internal representation of a configuration. |
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1081 There is a default configuration which applications may use by passing |
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1082 0 to any function using the data within an FcConfig. |
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1083 */ |
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1084 |
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1085 static void |
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1086 finalize_fc_config (Lisp_Object obj) |
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1087 { |
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1088 struct fc_config *p = XFC_CONFIG (obj); |
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1089 if (p->fccfgPtr && p->fccfgPtr != FcConfigGetCurrent()) |
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1090 { |
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1091 /* If we get here, all of *our* references are garbage (see comment on |
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1092 fc_config_create_using() for why), and the only reference that |
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1093 fontconfig keeps is the current FcConfig. */ |
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1094 FcConfigDestroy (p->fccfgPtr); |
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1095 } |
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1096 p->fccfgPtr = 0; |
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1097 } |
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1098 |
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1099 static const struct memory_description fcconfig_description [] = { |
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1100 /* #### nothing here, is this right?? */ |
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1101 { XD_END } |
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1102 }; |
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1103 |
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1104 DEFINE_NODUMP_LISP_OBJECT ("fc-config", fc_config, |
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1105 0, external_object_printer, finalize_fc_config, |
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1106 0, 0, fcconfig_description, |
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1107 struct fc_config); |
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1108 |
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1109 DEFUN ("fc-init", Ffc_init, 0, 0, 0, /* |
3931 | 1110 -- Function: FcBool FcInit (void) |
1111 Loads the default configuration file and the fonts referenced | |
1112 therein and sets the default configuration to that result. | |
1113 Returns whether this process succeeded or not. If the default | |
1114 configuration has already been loaded, this routine does nothing | |
1115 and returns FcTrue. */ | |
1116 ()) | |
1117 { | |
1118 return (FcInit () == FcTrue) ? Qt : Qnil; | |
1119 } | |
1120 | |
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1121 DEFUN ("fc-get-version", Ffc_get_version, 0, 0, 0, /* |
3931 | 1122 -- Function: int FcGetVersion (void) |
1123 Returns the version number of the library. | |
3935 | 1124 XEmacs: No, this should NOT return a pretty string. |
3931 | 1125 (let ((i (fc-get-version))) |
1126 (format "%d.%d.%d" (/ i 10000) (mod (/ i 100) 100) (mod i 100))) | |
3935 | 1127 gives the usual x.y.z format. This is the version of the .so. It can be |
1128 checked against `fc-version', which is the version of fontconfig.h. | |
1129 It's probably not a disaster if `(> (fc-get-version) fc-version)'. */ | |
3931 | 1130 ()) |
1131 { | |
1132 return make_int (FcGetVersion ()); | |
1133 } | |
1134 | |
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1135 DEFUN ("fc-init-reinitialize", Ffc_init_reinitialize, 0, 0, 0, /* |
3931 | 1136 -- Function: FcBool FcInitReinitialize (void) |
1137 Forces the default configuration file to be reloaded and resets | |
1138 the default configuration. */ | |
1139 ()) | |
1140 { | |
1141 return (FcInitReinitialize () == FcTrue) ? Qt : Qnil; | |
1142 } | |
1143 | |
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1144 DEFUN ("fc-init-bring-up-to-date", Ffc_init_bring_up_to_date, 0, 0, 0, /* |
3931 | 1145 -- Function: FcBool FcInitBringUptoDate (void) |
1146 Checks the rescan interval in the default configuration, checking | |
1147 the configuration if the interval has passed and reloading the | |
1148 configuration when any changes are detected. */ | |
1149 ()) | |
1150 { | |
1151 return (FcInitBringUptoDate () == FcTrue) ? Qt : Qnil; | |
1152 } | |
1153 | |
1154 #endif /* FONTCONFIG_EXPOSE_CONFIG */ | |
1155 | |
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1156 DEFUN ("xlfd-font-name-p", Fxlfd_font_name_p, 1, 1, 0, /* |
3354 | 1157 Check whether the string FONTNAME is a XLFD font name. */ |
1158 (fontname)) | |
1159 { | |
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1160 CHECK_STRING (fontname); |
3354 | 1161 /* #### should bind `case-fold-search' here? */ |
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1162 return Fstring_match (Vxlfd_font_name_regexp, fontname, Qnil, Qnil); |
3354 | 1163 } |
1164 | |
1165 /* FcPatternPrint: there is no point in having wrappers fc-pattern-print, | |
1166 Ffc_pattern_print since this function prints to stdout. */ | |
1167 | |
1168 /* Initialization of font-mgr */ | |
1169 | |
1170 #define XE_XLFD_SEPARATOR "-" | |
1171 /* XLFD specifies ISO 8859-1 encoding, but we can't handle non-ASCII | |
1172 in Mule when this function is called. So use HPC. */ | |
1173 #if 0 | |
1174 #define XE_XLFD_PREFIX "\\(\\+[\040-\176\240-\377]*\\)?-" | |
1175 #define XE_XLFD_OPT_TEXT "\\([\040-\044\046-\176\240-\377]*\\)" | |
1176 #define XE_XLFD_TEXT "\\([\040-\044\046-\176\240-\377]+\\)" | |
1177 #else | |
1178 #define XE_XLFD_PREFIX "\\(\\+[\040-\176]*\\)?-" | |
1179 #define XE_XLFD_OPT_TEXT "\\([^-]*\\)" | |
1180 #define XE_XLFD_TEXT "\\([^-]+\\)" | |
1181 #endif | |
1182 | |
1183 #define XE_XLFD_SLANT "\\([0-9ior?*][iot]?\\)" | |
1184 #define XE_XLFD_SPACING "\\([cmp?*]\\)" | |
1185 /* Hyphen as minus conflicts with use as separator. */ | |
1186 #define XE_XLFD_OPT_NEGATE "~?" | |
1187 #define XE_XLFD_NUMBER "\\([0-9?*]+\\)" | |
1188 #define XE_XLFD_PSIZE "\\([0-9?*]+\\|\\[[ 0-9+~.e?*]+\\]\\)" | |
1189 | |
1190 /* Call this only from the init code | |
1191 #### This is really horrible, let's get rid of it, please. */ | |
1192 static Lisp_Object | |
1193 make_xlfd_font_regexp (void) | |
1194 { | |
1195 struct gcpro gcpro1; | |
1196 unsigned i; | |
1197 Lisp_Object reg = Qnil; | |
1198 const Extbyte *re[] = /* #### This could just be catenated by | |
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1199 cpp and passed to build_extstring. */ |
3354 | 1200 { |
1201 /* Regular expression matching XLFDs as defined by XLFD v. 1.5. | |
1202 Matches must be case-insensitive. | |
1203 PSIZE is a pixel or point size, which may be a "matrix". The | |
1204 syntax of a matrix is not checked, just some lexical properties. | |
1205 AFAICT none of the TEXT fields except adstyle is optional. | |
1206 | |
1207 NB. It should not be a problem if this matches "too much", since | |
1208 an "old" server will simply not be able to find a matching font. */ | |
1209 "\\`", | |
1210 XE_XLFD_PREFIX, /* prefix */ | |
1211 XE_XLFD_TEXT, /* foundry */ | |
1212 XE_XLFD_SEPARATOR, | |
1213 XE_XLFD_TEXT, /* family */ | |
1214 XE_XLFD_SEPARATOR, | |
1215 XE_XLFD_TEXT, /* weight */ | |
1216 XE_XLFD_SEPARATOR, | |
1217 XE_XLFD_SLANT, /* slant */ | |
1218 XE_XLFD_SEPARATOR, | |
1219 XE_XLFD_TEXT, /* swidth */ | |
1220 XE_XLFD_SEPARATOR, | |
1221 XE_XLFD_OPT_TEXT, /* adstyle */ | |
1222 XE_XLFD_SEPARATOR, | |
1223 XE_XLFD_PSIZE, /* pixelsize */ | |
1224 XE_XLFD_SEPARATOR, | |
1225 XE_XLFD_PSIZE, /* pointsize */ | |
1226 XE_XLFD_SEPARATOR, | |
1227 XE_XLFD_NUMBER, /* resx */ | |
1228 XE_XLFD_SEPARATOR, | |
1229 XE_XLFD_NUMBER, /* resy */ | |
1230 XE_XLFD_SEPARATOR, | |
1231 XE_XLFD_SPACING, /* spacing */ | |
1232 XE_XLFD_SEPARATOR, | |
1233 XE_XLFD_OPT_NEGATE, /* avgwidth */ | |
1234 XE_XLFD_NUMBER, | |
1235 XE_XLFD_SEPARATOR, | |
1236 XE_XLFD_TEXT, /* registry */ | |
1237 XE_XLFD_SEPARATOR, | |
1238 XE_XLFD_TEXT, /* encoding */ | |
1239 "\\'" | |
1240 }; | |
1241 | |
1242 GCPRO1 (reg); | |
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1243 for (i = 0; i < sizeof (re)/sizeof (Extbyte *); i++) |
3354 | 1244 { |
1245 /* #### Currently this is Host Portable Coding, not ISO 8859-1. */ | |
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1246 reg = concat2 (reg, build_extstring (re[i], Qx_font_name_encoding)); |
3354 | 1247 } |
1248 | |
1249 RETURN_UNGCPRO (reg); | |
1250 } | |
1251 #undef XE_XLFD_SEPARATOR | |
1252 #undef XE_XLFD_PREFIX | |
1253 #undef XE_XLFD_OPT_TEXT | |
1254 #undef XE_XLFD_TEXT | |
1255 #undef XE_XLFD_OPT_SLANT | |
1256 #undef XE_XLFD_OPT_SPACING | |
1257 #undef XE_XLFD_OPT_NEGATE | |
1258 #undef XE_XLFD_NUMBER | |
1259 #undef XE_XLFD_PSIZE | |
1260 | |
1261 #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \ | |
1262 ? ((unsigned long) (x)) : ((unsigned long) (y))) | |
1263 | |
1264 static void | |
1265 string_list_to_fcobjectset (Lisp_Object list, FcObjectSet *os) | |
1266 { | |
1267 EXTERNAL_LIST_LOOP_2 (elt, list) | |
1268 { | |
3469 | 1269 const Extbyte *s; |
3354 | 1270 |
1271 CHECK_STRING (elt); | |
1272 s = fc_intern (elt); | |
1273 FcObjectSetAdd (os, s); | |
1274 } | |
1275 } | |
1276 | |
1277 void | |
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1278 syms_of_font_mgr (void) |
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1279 { |
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1280 INIT_LISP_OBJECT (fc_pattern); |
3354 | 1281 |
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1282 DEFSYMBOL_MULTIWORD_PREDICATE (Qfc_patternp); |
3354 | 1283 |
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1284 DEFSYMBOL (Qfc_result_type_mismatch); |
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1285 DEFSYMBOL (Qfc_result_no_match); |
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1286 DEFSYMBOL (Qfc_result_no_id); |
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1287 DEFSYMBOL (Qfc_internal_error); |
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1288 DEFSYMBOL (Qfc_match_pattern); |
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1289 DEFSYMBOL (Qfc_match_font); |
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1290 DEFSYMBOL (Qfont_mgr); |
3354 | 1291 |
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1292 DEFSUBR (Ffc_pattern_p); |
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1293 DEFSUBR (Ffc_pattern_create); |
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1294 DEFSUBR (Ffc_name_parse); |
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1295 DEFSUBR (Ffc_name_unparse); |
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1296 DEFSUBR (Ffc_pattern_duplicate); |
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1297 DEFSUBR (Ffc_pattern_add); |
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1298 DEFSUBR (Ffc_pattern_del); |
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1299 DEFSUBR (Ffc_pattern_get); |
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1300 DEFSUBR (Ffc_list_fonts_pattern_objects); |
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1301 DEFSUBR (Ffc_font_sort); |
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1302 DEFSUBR (Ffc_font_match); |
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1303 DEFSUBR (Ffc_default_substitute); |
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1304 DEFSUBR (Ffc_config_substitute); |
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1305 DEFSUBR (Ffc_font_render_prepare); |
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1306 DEFSUBR (Fxlfd_font_name_p); |
3931 | 1307 |
1308 #ifdef FONTCONFIG_EXPOSE_CONFIG | |
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1309 INIT_LISP_OBJECT (fc_config); |
3931 | 1310 |
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1311 DEFSYMBOL_MULTIWORD_PREDICATE (Qfc_configp); |
3931 | 1312 |
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1313 DEFSUBR (Ffc_config_p); |
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1314 DEFSUBR (Ffc_config_create); |
3931 | 1315 #if 0 |
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1316 DEFSUBR (Ffc_config_destroy); |
3931 | 1317 #endif |
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1318 DEFSUBR (Ffc_config_set_current); |
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1319 DEFSUBR (Ffc_config_get_current); |
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1320 DEFSUBR (Ffc_config_up_to_date); |
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1321 DEFSUBR (Ffc_config_build_fonts); |
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1322 DEFSUBR (Ffc_config_get_config_dirs); |
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1323 DEFSUBR (Ffc_config_get_font_dirs); |
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1324 DEFSUBR (Ffc_config_get_config_files); |
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1325 DEFSUBR (Ffc_config_get_cache); |
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1326 DEFSUBR (Ffc_config_get_fonts); |
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1327 DEFSUBR (Ffc_config_get_blanks); |
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1328 DEFSUBR (Ffc_config_get_rescan_interval); |
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1329 DEFSUBR (Ffc_config_set_rescan_interval); |
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1330 DEFSUBR (Ffc_config_app_font_add_file); |
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1331 DEFSUBR (Ffc_config_app_font_add_dir); |
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1332 DEFSUBR (Ffc_config_app_font_clear); |
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1333 DEFSUBR (Ffc_config_filename); |
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1334 DEFSUBR (Ffc_init_load_config); |
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1335 DEFSUBR (Ffc_init_load_config_and_fonts); |
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1336 DEFSUBR (Ffc_init); |
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1337 DEFSUBR (Ffc_get_version); |
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1338 DEFSUBR (Ffc_init_reinitialize); |
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1339 DEFSUBR (Ffc_init_bring_up_to_date); |
3931 | 1340 #endif /* FONTCONFIG_EXPOSE_CONFIG */ |
3354 | 1341 } |
1342 | |
1343 void | |
1344 vars_of_font_mgr (void) | |
1345 { | |
3935 | 1346 /* #### The next two DEFVARs belong somewhere else. */ |
3354 | 1347 |
1348 /* #### I know, but the right fix is use the generic debug facility. */ | |
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1349 DEFVAR_INT ("debug-xft", &debug_xft /* |
3354 | 1350 Level of debugging messages to issue to stderr for Xft. |
1351 A nonnegative integer. Set to 0 to suppress all warnings. | |
1352 Default is 1 to ensure a minimum of debugging output at initialization. | |
1353 Higher levels give even more information. | |
1354 */ ); | |
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1355 debug_xft = 0; |
3354 | 1356 |
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1357 DEFVAR_CONST_INT ("xft-version", &xft_version /* |
3354 | 1358 The major version number of the Xft library being used. |
1359 */ ); | |
3935 | 1360 xft_version = XFT_VERSION; |
1361 | |
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1362 DEFVAR_CONST_INT ("fc-version", &fc_version /* |
3935 | 1363 The version number of fontconfig.h. It can be checked against |
1364 `(fc-get-version)', which is the version of the .so. | |
1365 It's probably not a disaster if `(> (fc-get-version) fc-version)'. | |
1366 */ ); | |
1367 fc_version = FC_VERSION; | |
3354 | 1368 |
3360 | 1369 Fprovide (intern ("font-mgr")); |
3354 | 1370 } |
1371 | |
1372 void | |
1373 complex_vars_of_font_mgr (void) | |
1374 { | |
3931 | 1375 #ifdef FONTCONFIG_EXPOSE_CONFIG |
1376 Vfc_config_weak_list = make_weak_list (WEAK_LIST_SIMPLE); | |
1377 staticpro (&Vfc_config_weak_list); | |
1378 #endif | |
1379 | |
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1380 DEFVAR_LISP ("xft-xlfd-font-regexp", &Vxlfd_font_name_regexp /* |
3354 | 1381 The regular expression used to match XLFD font names. */ |
1382 ); | |
1383 Vxlfd_font_name_regexp = make_xlfd_font_regexp(); | |
1384 } | |
1385 | |
1386 void | |
1387 reinit_vars_of_font_mgr (void) | |
1388 { | |
1389 int i, size = (int) countof (fc_standard_properties); | |
1390 | |
1391 FcInit (); | |
1392 | |
1393 fc_property_name_hash_table = make_string_hash_table (size); | |
1394 for (i = 0; i < size; ++i) | |
1395 puthash (fc_standard_properties[i], NULL, fc_property_name_hash_table); | |
1396 } | |
1397 |