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c2f5bfd6 KH |
1 | /* font.c -- "Font" primitives. |
2 | Copyright (C) 2006 Free Software Foundation, Inc. | |
3 | Copyright (C) 2006 | |
4 | National Institute of Advanced Industrial Science and Technology (AIST) | |
5 | Registration Number H13PRO009 | |
6 | ||
7 | This file is part of GNU Emacs. | |
8 | ||
9 | GNU Emacs is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU Emacs is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU Emacs; see the file COPYING. If not, write to | |
21 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
22 | Boston, MA 02110-1301, USA. */ | |
23 | ||
24 | #include <config.h> | |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <ctype.h> | |
28 | ||
29 | #include "lisp.h" | |
30 | #include "buffer.h" | |
31 | #include "frame.h" | |
10d16101 | 32 | #include "window.h" |
c2f5bfd6 KH |
33 | #include "dispextern.h" |
34 | #include "charset.h" | |
35 | #include "character.h" | |
36 | #include "composite.h" | |
37 | #include "fontset.h" | |
38 | #include "font.h" | |
39 | ||
ec6fe57c | 40 | #ifndef FONT_DEBUG |
c2f5bfd6 | 41 | #define FONT_DEBUG |
ec6fe57c | 42 | #endif |
c2f5bfd6 KH |
43 | |
44 | #ifdef FONT_DEBUG | |
45 | #undef xassert | |
46 | #define xassert(X) do {if (!(X)) abort ();} while (0) | |
47 | #else | |
48 | #define xassert(X) (void) 0 | |
49 | #endif | |
50 | ||
51 | int enable_font_backend; | |
52 | ||
53 | Lisp_Object Qfontp; | |
54 | ||
e0708580 KH |
55 | Lisp_Object Qopentype; |
56 | ||
1bb1d99b | 57 | /* Important character set symbols. */ |
cf96c5c2 | 58 | Lisp_Object Qiso8859_1, Qiso10646_1, Qunicode_bmp, Qunicode_sip; |
1bb1d99b | 59 | |
c2f5bfd6 KH |
60 | /* Like CHECK_FONT_SPEC but also validate properties of the font-spec, |
61 | and set X to the validated result. */ | |
62 | ||
63 | #define CHECK_VALIDATE_FONT_SPEC(x) \ | |
64 | do { \ | |
65 | if (! FONT_SPEC_P (x)) x = wrong_type_argument (Qfont, x); \ | |
66 | x = font_prop_validate (x); \ | |
67 | } while (0) | |
68 | ||
69 | /* Number of pt per inch (from the TeXbook). */ | |
70 | #define PT_PER_INCH 72.27 | |
71 | ||
9331887d | 72 | /* Return a pixel size (integer) corresponding to POINT size (double) |
ec6fe57c KH |
73 | on resolution DPI. */ |
74 | #define POINT_TO_PIXEL(POINT, DPI) ((POINT) * (DPI) / PT_PER_INCH + 0.5) | |
c2f5bfd6 | 75 | |
9331887d | 76 | /* Return a point size (double) corresponding to POINT size (integer) |
ec6fe57c KH |
77 | on resolution DPI. */ |
78 | #define PIXEL_TO_POINT(PIXEL, DPI) ((PIXEL) * PT_PER_INCH * 10 / (DPI) + 0.5) | |
c2f5bfd6 KH |
79 | |
80 | /* Special string of zero length. It is used to specify a NULL name | |
81 | in a font properties (e.g. adstyle). We don't use the symbol of | |
82 | NULL name because it's confusing (Lisp printer prints nothing for | |
83 | it). */ | |
84 | Lisp_Object null_string; | |
85 | ||
86 | /* Special vector of zero length. This is repeatedly used by (struct | |
87 | font_driver *)->list when a specified font is not found. */ | |
88 | Lisp_Object null_vector; | |
89 | ||
90 | /* Vector of 3 elements. Each element is an alist for one of font | |
91 | style properties (weight, slant, width). The alist contains a | |
92 | mapping between symbolic property values (e.g. `medium' for weight) | |
93 | and numeric property values (e.g. 100). So, it looks like this: | |
94 | [((thin . 0) ... (heavy . 210)) | |
95 | ((ro . 0) ... (ot . 210)) | |
96 | ((ultracondensed . 50) ... (wide . 200))] */ | |
97 | static Lisp_Object font_style_table; | |
98 | ||
99 | /* Alist of font family vs the corresponding aliases. | |
100 | Each element has this form: | |
101 | (FAMILY ALIAS1 ALIAS2 ...) */ | |
102 | ||
103 | static Lisp_Object font_family_alist; | |
104 | ||
105 | /* Symbols representing keys of normal font properties. */ | |
106 | extern Lisp_Object QCtype, QCfamily, QCweight, QCslant, QCwidth, QCsize, QCname; | |
107 | Lisp_Object QCfoundry, QCadstyle, QCregistry, QCextra; | |
108 | /* Symbols representing keys of font extra info. */ | |
ec6fe57c KH |
109 | Lisp_Object QCspacing, QCdpi, QCscalable, QCotf, QClanguage, QCscript; |
110 | /* Symbols representing values of font spacing property. */ | |
111 | Lisp_Object Qc, Qm, Qp, Qd; | |
c2f5bfd6 KH |
112 | |
113 | /* List of all font drivers. All font-backends (XXXfont.c) call | |
114 | add_font_driver in syms_of_XXXfont to register the font-driver | |
115 | here. */ | |
116 | static struct font_driver_list *font_driver_list; | |
117 | ||
ec6fe57c | 118 | static int font_pixel_size P_ ((FRAME_PTR f, Lisp_Object)); |
c2f5bfd6 KH |
119 | static Lisp_Object prop_name_to_numeric P_ ((enum font_property_index, |
120 | Lisp_Object)); | |
121 | static Lisp_Object prop_numeric_to_name P_ ((enum font_property_index, int)); | |
122 | static Lisp_Object font_open_entity P_ ((FRAME_PTR, Lisp_Object, int)); | |
ec6fe57c | 123 | static void build_font_family_alist P_ ((void)); |
c2f5bfd6 KH |
124 | |
125 | /* Number of registered font drivers. */ | |
126 | static int num_font_drivers; | |
127 | ||
9331887d | 128 | /* Return a pixel size of font-spec SPEC on frame F. */ |
ec6fe57c | 129 | |
9331887d KH |
130 | static int |
131 | font_pixel_size (f, spec) | |
132 | FRAME_PTR f; | |
133 | Lisp_Object spec; | |
134 | { | |
135 | Lisp_Object size = AREF (spec, FONT_SIZE_INDEX); | |
136 | double point_size; | |
137 | int pixel_size, dpi; | |
138 | Lisp_Object extra, val; | |
139 | ||
140 | if (INTEGERP (size)) | |
141 | return XINT (size); | |
142 | if (NILP (size)) | |
143 | return 0; | |
144 | point_size = XFLOAT_DATA (size); | |
145 | extra = AREF (spec, FONT_EXTRA_INDEX); | |
146 | val = assq_no_quit (extra, QCdpi); | |
ec6fe57c KH |
147 | if (CONSP (val)) |
148 | { | |
149 | if (INTEGERP (XCDR (val))) | |
150 | dpi = XINT (XCDR (val)); | |
151 | else | |
152 | dpi = XFLOAT_DATA (XCDR (val)) + 0.5; | |
153 | } | |
9331887d KH |
154 | else |
155 | dpi = f->resy; | |
156 | pixel_size = POINT_TO_PIXEL (point_size, dpi); | |
157 | return pixel_size; | |
158 | } | |
159 | ||
c2f5bfd6 KH |
160 | /* Return a numeric value corresponding to PROP's NAME (symbol). If |
161 | NAME is not registered in font_style_table, return Qnil. PROP must | |
162 | be one of FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */ | |
163 | ||
164 | static Lisp_Object | |
165 | prop_name_to_numeric (prop, name) | |
166 | enum font_property_index prop; | |
167 | Lisp_Object name; | |
168 | { | |
169 | int table_index = prop - FONT_WEIGHT_INDEX; | |
170 | Lisp_Object val; | |
171 | ||
172 | val = assq_no_quit (name, AREF (font_style_table, table_index)); | |
173 | return (NILP (val) ? Qnil : XCDR (val)); | |
174 | } | |
175 | ||
176 | ||
177 | /* Return a name (symbol) corresponding to PROP's NUMERIC value. If | |
178 | no name is registered for NUMERIC in font_style_table, return a | |
179 | symbol of integer name (e.g. `123'). PROP must be one of | |
180 | FONT_{WEIGHT|SLANT|SWIDTH}_INDEX. */ | |
181 | ||
182 | static Lisp_Object | |
183 | prop_numeric_to_name (prop, numeric) | |
184 | enum font_property_index prop; | |
185 | int numeric; | |
186 | { | |
187 | int table_index = prop - FONT_WEIGHT_INDEX; | |
188 | Lisp_Object table = AREF (font_style_table, table_index); | |
189 | char buf[10]; | |
190 | ||
191 | while (! NILP (table)) | |
192 | { | |
193 | if (XINT (XCDR (XCAR (table))) >= numeric) | |
194 | { | |
195 | if (XINT (XCDR (XCAR (table))) == numeric) | |
196 | return XCAR (XCAR (table)); | |
197 | else | |
198 | break; | |
199 | } | |
200 | table = XCDR (table); | |
201 | } | |
202 | sprintf (buf, "%d", numeric); | |
203 | return intern (buf); | |
204 | } | |
205 | ||
206 | ||
207 | /* Return a symbol whose name is STR (length LEN). If STR contains | |
208 | uppercase letters, downcase them in advance. */ | |
209 | ||
210 | Lisp_Object | |
211 | intern_downcase (str, len) | |
212 | char *str; | |
213 | int len; | |
214 | { | |
215 | char *buf; | |
216 | int i; | |
217 | ||
218 | for (i = 0; i < len; i++) | |
219 | if (isupper (str[i])) | |
220 | break; | |
221 | if (i == len) | |
222 | return Fintern (make_unibyte_string (str, len), Qnil); | |
223 | buf = alloca (len); | |
224 | if (! buf) | |
225 | return Fintern (null_string, Qnil); | |
226 | bcopy (str, buf, len); | |
227 | for (; i < len; i++) | |
228 | if (isascii (buf[i])) | |
229 | buf[i] = tolower (buf[i]); | |
230 | return Fintern (make_unibyte_string (buf, len), Qnil); | |
231 | } | |
232 | ||
233 | extern Lisp_Object Vface_alternative_font_family_alist; | |
234 | ||
235 | static void | |
236 | build_font_family_alist () | |
237 | { | |
238 | Lisp_Object alist = Vface_alternative_font_family_alist; | |
239 | ||
240 | for (; CONSP (alist); alist = XCDR (alist)) | |
241 | { | |
242 | Lisp_Object tail, elt; | |
243 | ||
244 | for (tail = XCAR (alist), elt = Qnil ; CONSP (tail); tail = XCDR (tail)) | |
245 | elt = nconc2 (elt, Fcons (Fintern (XCAR (tail), Qnil), Qnil)); | |
246 | font_family_alist = Fcons (elt, font_family_alist); | |
247 | } | |
248 | } | |
249 | ||
250 | \f | |
251 | /* Font property validater. */ | |
252 | ||
ec6fe57c KH |
253 | static Lisp_Object font_prop_validate_symbol P_ ((enum font_property_index, |
254 | Lisp_Object, Lisp_Object)); | |
255 | static Lisp_Object font_prop_validate_style P_ ((enum font_property_index, | |
256 | Lisp_Object, Lisp_Object)); | |
257 | static Lisp_Object font_prop_validate_non_neg P_ ((enum font_property_index, | |
258 | Lisp_Object, Lisp_Object)); | |
259 | static Lisp_Object font_prop_validate_spacing P_ ((enum font_property_index, | |
260 | Lisp_Object, Lisp_Object)); | |
261 | static int get_font_prop_index P_ ((Lisp_Object, int)); | |
262 | static Lisp_Object font_prop_validate P_ ((Lisp_Object)); | |
263 | static Lisp_Object font_put_extra P_ ((Lisp_Object, Lisp_Object, Lisp_Object)); | |
c2f5bfd6 KH |
264 | |
265 | static Lisp_Object | |
ec6fe57c KH |
266 | font_prop_validate_symbol (prop_index, prop, val) |
267 | enum font_property_index prop_index; | |
268 | Lisp_Object prop, val; | |
c2f5bfd6 | 269 | { |
ec6fe57c KH |
270 | if (EQ (prop, QCotf)) |
271 | return (SYMBOLP (val) ? val : Qerror); | |
c2f5bfd6 KH |
272 | if (STRINGP (val)) |
273 | val = (SCHARS (val) == 0 ? null_string | |
274 | : intern_downcase ((char *) SDATA (val), SBYTES (val))); | |
275 | else if (SYMBOLP (val)) | |
276 | { | |
277 | if (SCHARS (SYMBOL_NAME (val)) == 0) | |
278 | val = null_string; | |
279 | } | |
280 | else | |
281 | val = Qerror; | |
282 | return val; | |
283 | } | |
284 | ||
285 | static Lisp_Object | |
ec6fe57c KH |
286 | font_prop_validate_style (prop_index, prop, val) |
287 | enum font_property_index prop_index; | |
288 | Lisp_Object prop, val; | |
c2f5bfd6 KH |
289 | { |
290 | if (! INTEGERP (val)) | |
291 | { | |
292 | if (STRINGP (val)) | |
293 | val = intern_downcase ((char *) SDATA (val), SBYTES (val)); | |
294 | if (! SYMBOLP (val)) | |
295 | val = Qerror; | |
296 | else | |
297 | { | |
ec6fe57c | 298 | val = prop_name_to_numeric (prop_index, val); |
c2f5bfd6 KH |
299 | if (NILP (val)) |
300 | val = Qerror; | |
301 | } | |
302 | } | |
303 | return val; | |
304 | } | |
305 | ||
306 | static Lisp_Object | |
ec6fe57c KH |
307 | font_prop_validate_non_neg (prop_index, prop, val) |
308 | enum font_property_index prop_index; | |
309 | Lisp_Object prop, val; | |
c2f5bfd6 KH |
310 | { |
311 | return (NATNUMP (val) || (FLOATP (val) && XFLOAT_DATA (val) >= 0) | |
312 | ? val : Qerror); | |
313 | } | |
314 | ||
315 | static Lisp_Object | |
ec6fe57c KH |
316 | font_prop_validate_spacing (prop_index, prop, val) |
317 | enum font_property_index prop_index; | |
318 | Lisp_Object prop, val; | |
319 | { | |
320 | if (NILP (val) || (NATNUMP (val) && XINT (val) <= FONT_SPACING_CHARCELL)) | |
321 | return val; | |
322 | if (EQ (val, Qc)) | |
323 | return make_number (FONT_SPACING_CHARCELL); | |
324 | if (EQ (val, Qm)) | |
325 | return make_number (FONT_SPACING_MONO); | |
326 | if (EQ (val, Qp)) | |
327 | return make_number (FONT_SPACING_PROPORTIONAL); | |
328 | return Qerror; | |
329 | } | |
330 | ||
331 | /* Structure of known font property keys and validater of the | |
332 | values. */ | |
c2f5bfd6 KH |
333 | struct |
334 | { | |
ec6fe57c | 335 | /* Pointer to the key symbol. */ |
c2f5bfd6 | 336 | Lisp_Object *key; |
ec6fe57c KH |
337 | /* Function to validate the value VAL, or NULL if any value is ok. */ |
338 | Lisp_Object (*validater) P_ ((enum font_property_index prop_index, | |
339 | Lisp_Object prop, Lisp_Object val)); | |
340 | } font_property_table[] = | |
341 | { { &QCtype, font_prop_validate_symbol }, | |
c2f5bfd6 KH |
342 | { &QCfoundry, font_prop_validate_symbol }, |
343 | { &QCfamily, font_prop_validate_symbol }, | |
344 | { &QCadstyle, font_prop_validate_symbol }, | |
345 | { &QCregistry, font_prop_validate_symbol }, | |
346 | { &QCweight, font_prop_validate_style }, | |
347 | { &QCslant, font_prop_validate_style }, | |
348 | { &QCwidth, font_prop_validate_style }, | |
ec6fe57c KH |
349 | { &QCsize, font_prop_validate_non_neg }, |
350 | { &QClanguage, font_prop_validate_symbol }, | |
351 | { &QCscript, font_prop_validate_symbol }, | |
352 | { &QCdpi, font_prop_validate_non_neg }, | |
353 | { &QCspacing, font_prop_validate_spacing }, | |
354 | { &QCscalable, NULL }, | |
355 | { &QCotf, font_prop_validate_symbol } | |
c2f5bfd6 KH |
356 | }; |
357 | ||
ec6fe57c KH |
358 | #define FONT_PROPERTY_TABLE_SIZE \ |
359 | ((sizeof font_property_table) / (sizeof *font_property_table)) | |
360 | ||
361 | static int | |
362 | get_font_prop_index (key, from) | |
c2f5bfd6 | 363 | Lisp_Object key; |
ec6fe57c | 364 | int from; |
c2f5bfd6 | 365 | { |
ec6fe57c KH |
366 | for (; from < FONT_PROPERTY_TABLE_SIZE; from++) |
367 | if (EQ (key, *font_property_table[from].key)) | |
368 | return from; | |
369 | return -1; | |
c2f5bfd6 KH |
370 | } |
371 | ||
372 | static Lisp_Object | |
373 | font_prop_validate (spec) | |
374 | Lisp_Object spec; | |
375 | { | |
ec6fe57c KH |
376 | int i; |
377 | Lisp_Object prop, val, extra; | |
c2f5bfd6 | 378 | |
ec6fe57c | 379 | for (i = FONT_TYPE_INDEX; i < FONT_EXTRA_INDEX; i++) |
c2f5bfd6 KH |
380 | { |
381 | if (! NILP (AREF (spec, i))) | |
382 | { | |
ec6fe57c KH |
383 | prop = *font_property_table[i].key; |
384 | val = (font_property_table[i].validater) (i, prop, AREF (spec, i)); | |
c2f5bfd6 | 385 | if (EQ (val, Qerror)) |
ec6fe57c KH |
386 | Fsignal (Qfont, list2 (build_string ("invalid font property"), |
387 | Fcons (prop, AREF (spec, i)))); | |
c2f5bfd6 KH |
388 | ASET (spec, i, val); |
389 | } | |
390 | } | |
ec6fe57c KH |
391 | for (extra = AREF (spec, FONT_EXTRA_INDEX); |
392 | CONSP (extra); extra = XCDR (extra)) | |
393 | { | |
394 | Lisp_Object elt = XCAR (extra); | |
395 | ||
396 | prop = XCAR (elt); | |
397 | i = get_font_prop_index (prop, FONT_EXTRA_INDEX); | |
398 | if (i >= 0 | |
399 | && font_property_table[i].validater) | |
400 | { | |
401 | val = (font_property_table[i].validater) (i, prop, XCDR (elt)); | |
402 | if (EQ (val, Qerror)) | |
403 | Fsignal (Qfont, list2 (build_string ("invalid font property"), | |
404 | elt)); | |
405 | XSETCDR (elt, val); | |
406 | } | |
407 | } | |
c2f5bfd6 KH |
408 | return spec; |
409 | } | |
410 | ||
ec6fe57c KH |
411 | static Lisp_Object |
412 | font_put_extra (font, prop, val) | |
9331887d | 413 | Lisp_Object font, prop, val; |
9331887d KH |
414 | { |
415 | Lisp_Object extra = AREF (font, FONT_EXTRA_INDEX); | |
ec6fe57c | 416 | Lisp_Object slot = (NILP (extra) ? Qnil : assq_no_quit (prop, extra)); |
9331887d KH |
417 | |
418 | if (NILP (slot)) | |
419 | { | |
420 | extra = Fcons (Fcons (prop, val), extra); | |
421 | ASET (font, FONT_EXTRA_INDEX, extra); | |
ec6fe57c | 422 | return val; |
9331887d | 423 | } |
9331887d | 424 | XSETCDR (slot, val); |
ec6fe57c | 425 | return val; |
9331887d KH |
426 | } |
427 | ||
c2f5bfd6 KH |
428 | \f |
429 | /* Font name parser and unparser */ | |
430 | ||
ec6fe57c KH |
431 | static Lisp_Object intern_font_field P_ ((char *, int)); |
432 | static int parse_matrix P_ ((char *)); | |
433 | static int font_expand_wildcards P_ ((Lisp_Object *, int)); | |
434 | static int font_parse_name P_ ((char *, Lisp_Object)); | |
c2f5bfd6 | 435 | |
ec6fe57c | 436 | /* An enumerator for each field of an XLFD font name. */ |
c2f5bfd6 KH |
437 | enum xlfd_field_index |
438 | { | |
439 | XLFD_FOUNDRY_INDEX, | |
440 | XLFD_FAMILY_INDEX, | |
441 | XLFD_WEIGHT_INDEX, | |
442 | XLFD_SLANT_INDEX, | |
443 | XLFD_SWIDTH_INDEX, | |
444 | XLFD_ADSTYLE_INDEX, | |
4485a28e KH |
445 | XLFD_PIXEL_INDEX, |
446 | XLFD_POINT_INDEX, | |
c2f5bfd6 KH |
447 | XLFD_RESX_INDEX, |
448 | XLFD_RESY_INDEX, | |
449 | XLFD_SPACING_INDEX, | |
450 | XLFD_AVGWIDTH_INDEX, | |
451 | XLFD_REGISTRY_INDEX, | |
452 | XLFD_ENCODING_INDEX, | |
453 | XLFD_LAST_INDEX | |
454 | }; | |
455 | ||
ec6fe57c | 456 | /* An enumerator for mask bit corresponding to each XLFD field. */ |
4485a28e KH |
457 | enum xlfd_field_mask |
458 | { | |
459 | XLFD_FOUNDRY_MASK = 0x0001, | |
460 | XLFD_FAMILY_MASK = 0x0002, | |
461 | XLFD_WEIGHT_MASK = 0x0004, | |
462 | XLFD_SLANT_MASK = 0x0008, | |
463 | XLFD_SWIDTH_MASK = 0x0010, | |
464 | XLFD_ADSTYLE_MASK = 0x0020, | |
465 | XLFD_PIXEL_MASK = 0x0040, | |
466 | XLFD_POINT_MASK = 0x0080, | |
467 | XLFD_RESX_MASK = 0x0100, | |
468 | XLFD_RESY_MASK = 0x0200, | |
469 | XLFD_SPACING_MASK = 0x0400, | |
470 | XLFD_AVGWIDTH_MASK = 0x0800, | |
471 | XLFD_REGISTRY_MASK = 0x1000, | |
472 | XLFD_ENCODING_MASK = 0x2000 | |
473 | }; | |
474 | ||
475 | ||
ec6fe57c KH |
476 | /* Return a Lispy value of a XLFD font field at STR and LEN bytes. |
477 | If LEN is zero, it returns `null_string'. | |
478 | If STR is "*", it returns nil. | |
479 | If all characters in STR are digits, it returns an integer. | |
480 | Otherwise, it returns a symbol interned from downcased STR. */ | |
c2f5bfd6 KH |
481 | |
482 | static Lisp_Object | |
4485a28e KH |
483 | intern_font_field (str, len) |
484 | char *str; | |
485 | int len; | |
c2f5bfd6 | 486 | { |
4485a28e | 487 | int i; |
c2f5bfd6 KH |
488 | |
489 | if (len == 0) | |
490 | return null_string; | |
491 | if (*str == '*' && len == 1) | |
492 | return Qnil; | |
4485a28e KH |
493 | if (isdigit (*str)) |
494 | { | |
495 | for (i = 1; i < len; i++) | |
496 | if (! isdigit (str[i])) | |
497 | break; | |
498 | if (i == len) | |
499 | return make_number (atoi (str)); | |
500 | } | |
c2f5bfd6 KH |
501 | return intern_downcase (str, len); |
502 | } | |
503 | ||
504 | /* Parse P pointing the pixel/point size field of the form | |
505 | `[A B C D]' which specifies a transformation matrix: | |
506 | ||
507 | A B 0 | |
508 | C D 0 | |
509 | 0 0 1 | |
510 | ||
511 | by which all glyphs of the font are transformed. The spec says | |
512 | that scalar value N for the pixel/point size is equivalent to: | |
513 | A = N * resx/resy, B = C = 0, D = N. | |
514 | ||
515 | Return the scalar value N if the form is valid. Otherwise return | |
516 | -1. */ | |
517 | ||
518 | static int | |
519 | parse_matrix (p) | |
520 | char *p; | |
521 | { | |
522 | double matrix[4]; | |
523 | char *end; | |
524 | int i; | |
525 | ||
526 | for (i = 0, p++; i < 4 && *p && *p != ']'; i++) | |
527 | { | |
528 | if (*p == '~') | |
529 | matrix[i] = - strtod (p + 1, &end); | |
530 | else | |
531 | matrix[i] = strtod (p, &end); | |
532 | p = end; | |
533 | } | |
534 | return (i == 4 ? (int) matrix[3] : -1); | |
535 | } | |
536 | ||
4485a28e KH |
537 | /* Expand a wildcard field in FIELD (the first N fields are filled) to |
538 | multiple fields to fill in all 14 XLFD fields while restring a | |
539 | field position by its contents. */ | |
540 | ||
ec6fe57c | 541 | static int |
4485a28e KH |
542 | font_expand_wildcards (field, n) |
543 | Lisp_Object field[XLFD_LAST_INDEX]; | |
544 | int n; | |
545 | { | |
546 | /* Copy of FIELD. */ | |
547 | Lisp_Object tmp[XLFD_LAST_INDEX]; | |
548 | /* Array of information about where this element can go. Nth | |
549 | element is for Nth element of FIELD. */ | |
550 | struct { | |
551 | /* Minimum possible field. */ | |
552 | int from; | |
553 | /* Maxinum possible field. */ | |
554 | int to; | |
555 | /* Bit mask of possible field. Nth bit corresponds to Nth field. */ | |
556 | int mask; | |
557 | } range[XLFD_LAST_INDEX]; | |
558 | int i, j; | |
ec6fe57c | 559 | int range_from, range_to; |
4485a28e KH |
560 | unsigned range_mask; |
561 | ||
562 | #define XLFD_SYMBOL_MASK (XLFD_FOUNDRY_MASK | XLFD_FAMILY_MASK \ | |
563 | | XLFD_ADSTYLE_MASK | XLFD_REGISTRY_MASK) | |
564 | #define XLFD_NULL_MASK (XLFD_FOUNDRY_MASK | XLFD_ADSTYLE_MASK) | |
4485a28e | 565 | #define XLFD_LARGENUM_MASK (XLFD_POINT_MASK | XLFD_RESX_MASK | XLFD_RESY_MASK \ |
ef18374f | 566 | | XLFD_AVGWIDTH_MASK) |
4485a28e KH |
567 | #define XLFD_REGENC_MASK (XLFD_REGISTRY_MASK | XLFD_ENCODING_MASK) |
568 | ||
569 | /* Initialize RANGE_MASK for FIELD[0] which can be 0th to (14 - N)th | |
570 | field. The value is shifted to left one bit by one in the | |
571 | following loop. */ | |
572 | for (i = 0, range_mask = 0; i <= 14 - n; i++) | |
573 | range_mask = (range_mask << 1) | 1; | |
574 | ||
ec6fe57c KH |
575 | /* The triplet RANGE_FROM, RANGE_TO, and RANGE_MASK is a |
576 | position-based retriction for FIELD[I]. */ | |
577 | for (i = 0, range_from = 0, range_to = 14 - n; i < n; | |
578 | i++, range_from++, range_to++, range_mask <<= 1) | |
4485a28e | 579 | { |
4485a28e KH |
580 | Lisp_Object val = field[i]; |
581 | ||
582 | tmp[i] = val; | |
583 | if (NILP (val)) | |
584 | { | |
585 | /* Wildcard. */ | |
586 | range[i].from = range_from; | |
587 | range[i].to = range_to; | |
588 | range[i].mask = range_mask; | |
589 | } | |
590 | else | |
591 | { | |
592 | /* The triplet FROM, TO, and MASK is a value-based | |
593 | retriction for FIELD[I]. */ | |
594 | int from, to; | |
595 | unsigned mask; | |
596 | ||
597 | if (INTEGERP (val)) | |
598 | { | |
599 | int numeric = XINT (val); | |
600 | ||
ef18374f KH |
601 | if (i + 1 == n) |
602 | from = to = XLFD_ENCODING_INDEX, | |
603 | mask = XLFD_ENCODING_MASK; | |
ec6fe57c KH |
604 | else if (numeric == 0) |
605 | from = XLFD_PIXEL_INDEX, to = XLFD_AVGWIDTH_INDEX, | |
606 | mask = XLFD_PIXEL_MASK | XLFD_LARGENUM_MASK; | |
ef18374f KH |
607 | else if (numeric <= 48) |
608 | from = to = XLFD_PIXEL_INDEX, | |
609 | mask = XLFD_PIXEL_MASK; | |
ec6fe57c KH |
610 | else |
611 | from = XLFD_POINT_INDEX, to = XLFD_AVGWIDTH_INDEX, | |
4485a28e KH |
612 | mask = XLFD_LARGENUM_MASK; |
613 | } | |
614 | else if (EQ (val, null_string)) | |
615 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ADSTYLE_INDEX, | |
616 | mask = XLFD_NULL_MASK; | |
617 | else if (i == 0) | |
618 | from = to = XLFD_FOUNDRY_INDEX, mask = XLFD_FOUNDRY_MASK; | |
619 | else if (i + 1 == n) | |
620 | { | |
621 | Lisp_Object name = SYMBOL_NAME (val); | |
622 | ||
623 | if (SDATA (name)[SBYTES (name) - 1] == '*') | |
624 | from = XLFD_REGISTRY_INDEX, to = XLFD_ENCODING_INDEX, | |
625 | mask = XLFD_REGENC_MASK; | |
626 | else | |
627 | from = to = XLFD_ENCODING_INDEX, | |
628 | mask = XLFD_ENCODING_MASK; | |
629 | } | |
ef18374f KH |
630 | else if (range_from <= XLFD_WEIGHT_INDEX |
631 | && range_to >= XLFD_WEIGHT_INDEX | |
632 | && !NILP (prop_name_to_numeric (FONT_WEIGHT_INDEX, val))) | |
4485a28e | 633 | from = to = XLFD_WEIGHT_INDEX, mask = XLFD_WEIGHT_MASK; |
ef18374f KH |
634 | else if (range_from <= XLFD_SLANT_INDEX |
635 | && range_to >= XLFD_SLANT_INDEX | |
636 | && !NILP (prop_name_to_numeric (FONT_SLANT_INDEX, val))) | |
4485a28e | 637 | from = to = XLFD_SLANT_INDEX, mask = XLFD_SLANT_MASK; |
ef18374f KH |
638 | else if (range_from <= XLFD_SWIDTH_INDEX |
639 | && range_to >= XLFD_SWIDTH_INDEX | |
640 | && !NILP (prop_name_to_numeric (FONT_WIDTH_INDEX, val))) | |
4485a28e KH |
641 | from = to = XLFD_SWIDTH_INDEX, mask = XLFD_SWIDTH_MASK; |
642 | else | |
643 | { | |
ec6fe57c | 644 | if (EQ (val, Qc) || EQ (val, Qm) || EQ (val, Qp) || EQ (val, Qd)) |
4485a28e KH |
645 | from = to = XLFD_SPACING_INDEX, mask = XLFD_SPACING_MASK; |
646 | else | |
647 | from = XLFD_FOUNDRY_INDEX, to = XLFD_ENCODING_INDEX, | |
648 | mask = XLFD_SYMBOL_MASK; | |
649 | } | |
650 | ||
651 | /* Merge position-based and value-based restrictions. */ | |
652 | mask &= range_mask; | |
653 | while (from < range_from) | |
654 | mask &= ~(1 << from++); | |
655 | while (from < 14 && ! (mask & (1 << from))) | |
656 | from++; | |
657 | while (to > range_to) | |
658 | mask &= ~(1 << to--); | |
659 | while (to >= 0 && ! (mask & (1 << to))) | |
660 | to--; | |
661 | if (from > to) | |
662 | return -1; | |
663 | range[i].from = from; | |
664 | range[i].to = to; | |
665 | range[i].mask = mask; | |
666 | ||
667 | if (from > range_from || to < range_to) | |
ec6fe57c KH |
668 | { |
669 | /* The range is narrowed by value-based restrictions. | |
670 | Reflect it to the other fields. */ | |
671 | ||
672 | /* Following fields should be after FROM. */ | |
673 | range_from = from; | |
674 | /* Preceding fields should be before TO. */ | |
675 | for (j = i - 1, from--, to--; j >= 0; j--, from--, to--) | |
676 | { | |
677 | /* Check FROM for non-wildcard field. */ | |
678 | if (! NILP (tmp[j]) && range[j].from < from) | |
679 | { | |
680 | while (range[j].from < from) | |
681 | range[j].mask &= ~(1 << range[j].from++); | |
682 | while (from < 14 && ! (range[j].mask & (1 << from))) | |
683 | from++; | |
684 | range[j].from = from; | |
685 | } | |
686 | else | |
687 | from = range[j].from; | |
688 | if (range[j].to > to) | |
689 | { | |
690 | while (range[j].to > to) | |
691 | range[j].mask &= ~(1 << range[j].to--); | |
692 | while (to >= 0 && ! (range[j].mask & (1 << to))) | |
693 | to--; | |
694 | range[j].to = to; | |
695 | } | |
696 | else | |
697 | to = range[j].to; | |
698 | if (from > to) | |
699 | return -1; | |
700 | } | |
701 | } | |
4485a28e KH |
702 | } |
703 | } | |
704 | ||
705 | /* Decide all fileds from restrictions in RANGE. */ | |
706 | for (i = j = 0; i < n ; i++) | |
707 | { | |
708 | if (j < range[i].from) | |
709 | { | |
710 | if (i == 0 || ! NILP (tmp[i - 1])) | |
711 | /* None of TMP[X] corresponds to Jth field. */ | |
712 | return -1; | |
713 | for (; j < range[i].from; j++) | |
714 | field[j] = Qnil; | |
715 | } | |
716 | field[j++] = tmp[i]; | |
717 | } | |
718 | if (! NILP (tmp[n - 1]) && j < XLFD_REGISTRY_INDEX) | |
719 | return -1; | |
720 | for (; j < XLFD_LAST_INDEX; j++) | |
721 | field[j] = Qnil; | |
722 | if (INTEGERP (field[XLFD_ENCODING_INDEX])) | |
723 | field[XLFD_ENCODING_INDEX] | |
724 | = Fintern (Fnumber_to_string (field[XLFD_ENCODING_INDEX]), Qnil); | |
725 | return 0; | |
726 | } | |
727 | ||
ef18374f | 728 | /* Parse NAME (null terminated) as XLFD and store information in FONT |
9331887d KH |
729 | (font-spec or font-entity). Size property of FONT is set as |
730 | follows: | |
731 | specified XLFD fields FONT property | |
732 | --------------------- ------------- | |
733 | PIXEL_SIZE PIXEL_SIZE (Lisp integer) | |
734 | POINT_SIZE and RESY calculated pixel size (Lisp integer) | |
735 | POINT_SIZE POINT_SIZE/10 (Lisp float) | |
736 | ||
ec6fe57c | 737 | If NAME is successfully parsed, return 0. Otherwise return -1. |
9331887d | 738 | |
ec6fe57c KH |
739 | FONT is usually a font-spec, but when this function is called from |
740 | X font backend driver, it is a font-entity. In that case, NAME is | |
741 | a fully specified XLFD, and we set FONT_EXTRA_INDEX of FONT to a | |
742 | symbol RESX-RESY-SPACING-AVGWIDTH. | |
743 | */ | |
c2f5bfd6 KH |
744 | |
745 | int | |
ec6fe57c | 746 | font_parse_xlfd (name, font) |
c2f5bfd6 KH |
747 | char *name; |
748 | Lisp_Object font; | |
c2f5bfd6 KH |
749 | { |
750 | int len = strlen (name); | |
751 | int i, j; | |
ec6fe57c KH |
752 | Lisp_Object dpi, spacing; |
753 | int avgwidth; | |
cf23b845 | 754 | char *f[XLFD_LAST_INDEX + 1]; |
c2f5bfd6 | 755 | Lisp_Object val; |
4485a28e | 756 | char *p; |
c2f5bfd6 KH |
757 | |
758 | if (len > 255) | |
759 | /* Maximum XLFD name length is 255. */ | |
760 | return -1; | |
ec6fe57c KH |
761 | /* Accept "*-.." as a fully specified XLFD. */ |
762 | if (name[0] == '*' && name[1] == '-') | |
763 | i = 1, f[XLFD_FOUNDRY_INDEX] = name; | |
764 | else | |
765 | i = 0; | |
766 | for (p = name + i; *p; p++) | |
767 | if (*p == '-' && i < XLFD_LAST_INDEX) | |
768 | f[i++] = p + 1; | |
769 | f[i] = p; | |
c2f5bfd6 | 770 | |
ec6fe57c KH |
771 | dpi = spacing = Qnil; |
772 | avgwidth = -1; | |
4485a28e | 773 | |
ec6fe57c | 774 | if (i == XLFD_LAST_INDEX) |
4485a28e | 775 | { |
ec6fe57c KH |
776 | int pixel_size; |
777 | ||
4485a28e | 778 | /* Fully specified XLFD. */ |
ec6fe57c KH |
779 | for (i = 0, j = FONT_FOUNDRY_INDEX; i < XLFD_WEIGHT_INDEX; i++, j++) |
780 | { | |
781 | val = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
782 | if (! NILP (val)) | |
783 | ASET (font, j, val); | |
784 | } | |
785 | for (j = FONT_WEIGHT_INDEX; i < XLFD_ADSTYLE_INDEX; i++, j++) | |
4485a28e | 786 | { |
ec6fe57c KH |
787 | val = intern_font_field (f[i], f[i + 1] - 1 - f[i]); |
788 | if (! NILP (val)) | |
4485a28e | 789 | { |
ec6fe57c KH |
790 | Lisp_Object numeric = prop_name_to_numeric (j, val); |
791 | ||
792 | if (INTEGERP (numeric)) | |
793 | val = numeric; | |
794 | ASET (font, j, val); | |
795 | } | |
796 | } | |
797 | val = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
798 | if (! NILP (val)) | |
799 | ASET (font, FONT_ADSTYLE_INDEX, val); | |
800 | i = XLFD_REGISTRY_INDEX; | |
801 | val = intern_font_field (f[i], f[i + 2] - f[i]); | |
802 | if (! NILP (val)) | |
803 | ASET (font, FONT_REGISTRY_INDEX, val); | |
804 | ||
805 | p = f[XLFD_PIXEL_INDEX]; | |
806 | if (*p == '[' && (pixel_size = parse_matrix (p)) >= 0) | |
807 | ASET (font, FONT_SIZE_INDEX, make_number (pixel_size)); | |
808 | else | |
809 | { | |
810 | i = XLFD_PIXEL_INDEX; | |
811 | val = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
812 | if (! NILP (val)) | |
813 | ASET (font, FONT_SIZE_INDEX, val); | |
814 | else | |
815 | { | |
816 | double point_size = -1; | |
817 | ||
818 | xassert (FONT_SPEC_P (font)); | |
819 | p = f[XLFD_POINT_INDEX]; | |
820 | if (*p == '[') | |
821 | point_size = parse_matrix (p); | |
822 | else if (isdigit (*p)) | |
823 | point_size = atoi (p), point_size /= 10; | |
824 | if (point_size >= 0) | |
825 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); | |
4485a28e KH |
826 | else |
827 | { | |
ec6fe57c KH |
828 | i = XLFD_PIXEL_INDEX; |
829 | val = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
830 | if (! NILP (val)) | |
831 | ASET (font, FONT_SIZE_INDEX, val); | |
4485a28e | 832 | } |
4485a28e KH |
833 | } |
834 | } | |
ec6fe57c KH |
835 | |
836 | /* Parse RESX, RESY, SPACING, and AVGWIDTH. */ | |
837 | if (FONT_ENTITY_P (font)) | |
838 | { | |
839 | i = XLFD_RESX_INDEX; | |
840 | ASET (font, FONT_EXTRA_INDEX, | |
841 | intern_font_field (f[i], f[XLFD_REGISTRY_INDEX] - 1 - f[i])); | |
842 | return 0; | |
843 | } | |
844 | ||
845 | /* Here we just setup DPI, SPACING, and AVGWIDTH. They are set | |
846 | in FONT_EXTRA_INDEX later. */ | |
847 | i = XLFD_RESX_INDEX; | |
848 | dpi = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
849 | i = XLFD_SPACING_INDEX; | |
850 | spacing = intern_font_field (f[i], f[i + 1] - 1 - f[i]); | |
851 | p = f[XLFD_AVGWIDTH_INDEX]; | |
852 | if (*p == '~') | |
853 | p++; | |
854 | if (isdigit (*p)) | |
855 | avgwidth = atoi (p); | |
4485a28e KH |
856 | } |
857 | else | |
c2f5bfd6 | 858 | { |
4485a28e | 859 | int wild_card_found = 0; |
ec6fe57c | 860 | Lisp_Object prop[XLFD_LAST_INDEX]; |
4485a28e | 861 | |
ec6fe57c | 862 | for (j = 0; j < i; j++) |
4485a28e | 863 | { |
ec6fe57c | 864 | if (*f[j] == '*') |
4485a28e | 865 | { |
ec6fe57c KH |
866 | if (f[j][1] && f[j][1] != '-') |
867 | return -1; | |
868 | prop[j] = Qnil; | |
869 | wild_card_found = 1; | |
870 | } | |
871 | else if (isdigit (*f[j])) | |
872 | { | |
873 | for (p = f[j] + 1; isdigit (*p); p++); | |
874 | if (*p && *p != '-') | |
875 | prop[j] = intern_downcase (f[j], p - f[j]); | |
4485a28e | 876 | else |
ec6fe57c | 877 | prop[j] = make_number (atoi (f[j])); |
4485a28e | 878 | } |
ec6fe57c KH |
879 | else if (j + 1 < i) |
880 | prop[j] = intern_font_field (f[j], f[j + 1] - 1 - f[j]); | |
881 | else | |
882 | prop[j] = intern_font_field (f[j], f[i] - f[j]); | |
4485a28e KH |
883 | } |
884 | if (! wild_card_found) | |
c2f5bfd6 | 885 | return -1; |
ec6fe57c | 886 | if (font_expand_wildcards (prop, i) < 0) |
4485a28e | 887 | return -1; |
ec6fe57c KH |
888 | |
889 | for (i = 0, j = FONT_FOUNDRY_INDEX; i < XLFD_WEIGHT_INDEX; i++, j++) | |
890 | if (! NILP (prop[i])) | |
891 | ASET (font, j, prop[i]); | |
892 | for (j = FONT_WEIGHT_INDEX; i < XLFD_ADSTYLE_INDEX; i++, j++) | |
893 | if (! NILP (prop[i])) | |
894 | ASET (font, j, prop[i]); | |
895 | if (! NILP (prop[XLFD_ADSTYLE_INDEX])) | |
896 | ASET (font, FONT_ADSTYLE_INDEX, prop[XLFD_ADSTYLE_INDEX]); | |
897 | val = prop[XLFD_REGISTRY_INDEX]; | |
898 | if (NILP (val)) | |
c2f5bfd6 | 899 | { |
ec6fe57c KH |
900 | val = prop[XLFD_ENCODING_INDEX]; |
901 | if (! NILP (val)) | |
902 | val = Fintern (concat2 (build_string ("*-"), SYMBOL_NAME (val)), | |
903 | Qnil); | |
4485a28e | 904 | } |
ec6fe57c KH |
905 | else if (NILP (prop[XLFD_ENCODING_INDEX])) |
906 | val = Fintern (concat2 (SYMBOL_NAME (val), build_string ("-*")), | |
907 | Qnil); | |
4485a28e | 908 | else |
ec6fe57c KH |
909 | val = Fintern (concat3 (SYMBOL_NAME (val), build_string ("-"), |
910 | SYMBOL_NAME (prop[XLFD_ENCODING_INDEX])), | |
911 | Qnil); | |
912 | if (! NILP (val)) | |
913 | ASET (font, FONT_REGISTRY_INDEX, val); | |
914 | ||
915 | if (INTEGERP (prop[XLFD_PIXEL_INDEX])) | |
916 | ASET (font, FONT_SIZE_INDEX, prop[XLFD_PIXEL_INDEX]); | |
917 | else if (INTEGERP (prop[XLFD_POINT_INDEX])) | |
4485a28e | 918 | { |
ec6fe57c | 919 | double point_size = XINT (prop[XLFD_POINT_INDEX]); |
c2f5bfd6 | 920 | |
ec6fe57c KH |
921 | ASET (font, FONT_SIZE_INDEX, make_float (point_size / 10)); |
922 | } | |
c2f5bfd6 | 923 | |
ec6fe57c KH |
924 | dpi = prop[XLFD_RESX_INDEX]; |
925 | spacing = prop[XLFD_SPACING_INDEX]; | |
926 | if (INTEGERP (prop[XLFD_AVGWIDTH_INDEX])) | |
927 | avgwidth = XINT (prop[XLFD_AVGWIDTH_INDEX]); | |
c2f5bfd6 KH |
928 | } |
929 | ||
ec6fe57c KH |
930 | if (! NILP (dpi)) |
931 | font_put_extra (font, QCdpi, dpi); | |
932 | if (! NILP (spacing)) | |
933 | font_put_extra (font, QCspacing, spacing); | |
934 | if (avgwidth >= 0) | |
935 | font_put_extra (font, QCscalable, avgwidth == 0 ? Qt : Qnil); | |
c2f5bfd6 | 936 | |
ec6fe57c | 937 | return 0; |
c2f5bfd6 KH |
938 | } |
939 | ||
940 | /* Store XLFD name of FONT (font-spec or font-entity) in NAME (NBYTES | |
941 | length), and return the name length. If FONT_SIZE_INDEX of FONT is | |
942 | 0, use PIXEL_SIZE instead. */ | |
943 | ||
944 | int | |
945 | font_unparse_xlfd (font, pixel_size, name, nbytes) | |
946 | Lisp_Object font; | |
1bb1d99b | 947 | int pixel_size; |
c2f5bfd6 KH |
948 | char *name; |
949 | int nbytes; | |
950 | { | |
ec6fe57c | 951 | char *f[XLFD_REGISTRY_INDEX + 1]; |
c2f5bfd6 KH |
952 | Lisp_Object val; |
953 | int i, j, len = 0; | |
954 | ||
955 | xassert (FONTP (font)); | |
956 | ||
957 | for (i = FONT_FOUNDRY_INDEX, j = XLFD_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; | |
958 | i++, j++) | |
959 | { | |
960 | if (i == FONT_ADSTYLE_INDEX) | |
961 | j = XLFD_ADSTYLE_INDEX; | |
962 | else if (i == FONT_REGISTRY_INDEX) | |
963 | j = XLFD_REGISTRY_INDEX; | |
964 | val = AREF (font, i); | |
965 | if (NILP (val)) | |
1bb1d99b KH |
966 | { |
967 | if (j == XLFD_REGISTRY_INDEX) | |
968 | f[j] = "*-*", len += 4; | |
969 | else | |
970 | f[j] = "*", len += 2; | |
971 | } | |
c2f5bfd6 KH |
972 | else |
973 | { | |
974 | if (SYMBOLP (val)) | |
975 | val = SYMBOL_NAME (val); | |
1bb1d99b KH |
976 | if (j == XLFD_REGISTRY_INDEX |
977 | && ! strchr ((char *) SDATA (val), '-')) | |
978 | { | |
979 | /* Change "jisx0208*" and "jisx0208" to "jisx0208*-*". */ | |
980 | if (SDATA (val)[SBYTES (val) - 1] == '*') | |
981 | { | |
982 | f[j] = alloca (SBYTES (val) + 3); | |
983 | sprintf (f[j], "%s-*", SDATA (val)); | |
984 | len += SBYTES (val) + 3; | |
985 | } | |
986 | else | |
987 | { | |
988 | f[j] = alloca (SBYTES (val) + 4); | |
989 | sprintf (f[j], "%s*-*", SDATA (val)); | |
990 | len += SBYTES (val) + 4; | |
991 | } | |
992 | } | |
993 | else | |
994 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; | |
c2f5bfd6 KH |
995 | } |
996 | } | |
997 | ||
998 | for (i = FONT_WEIGHT_INDEX, j = XLFD_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; | |
999 | i++, j++) | |
1000 | { | |
1001 | val = AREF (font, i); | |
1002 | if (NILP (val)) | |
1003 | f[j] = "*", len += 2; | |
1004 | else | |
1005 | { | |
1006 | if (INTEGERP (val)) | |
1007 | val = prop_numeric_to_name (i, XINT (val)); | |
1008 | if (SYMBOLP (val)) | |
1009 | val = SYMBOL_NAME (val); | |
1010 | xassert (STRINGP (val)); | |
1011 | f[j] = (char *) SDATA (val), len += SBYTES (val) + 1; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | val = AREF (font, FONT_SIZE_INDEX); | |
1016 | xassert (NUMBERP (val) || NILP (val)); | |
1017 | if (INTEGERP (val)) | |
1018 | { | |
ec6fe57c | 1019 | f[XLFD_PIXEL_INDEX] = alloca (22); |
c2f5bfd6 KH |
1020 | i = XINT (val); |
1021 | if (i > 0) | |
ec6fe57c | 1022 | len += sprintf (f[XLFD_PIXEL_INDEX], "%d-*", i) + 1; |
c2f5bfd6 | 1023 | else /* i == 0 */ |
ec6fe57c | 1024 | len += sprintf (f[XLFD_PIXEL_INDEX], "%d-*", pixel_size) + 1; |
c2f5bfd6 KH |
1025 | } |
1026 | else if (FLOATP (val)) | |
1027 | { | |
ec6fe57c | 1028 | f[XLFD_PIXEL_INDEX] = alloca (12); |
c2f5bfd6 | 1029 | i = XFLOAT_DATA (val) * 10; |
ec6fe57c | 1030 | len += sprintf (f[XLFD_PIXEL_INDEX], "*-%d", i) + 1; |
c2f5bfd6 KH |
1031 | } |
1032 | else | |
ec6fe57c KH |
1033 | f[XLFD_PIXEL_INDEX] = "*-*", len += 4; |
1034 | ||
1035 | val = AREF (font, FONT_EXTRA_INDEX); | |
c2f5bfd6 KH |
1036 | |
1037 | if (FONT_ENTITY_P (font) | |
1038 | && EQ (AREF (font, FONT_TYPE_INDEX), Qx)) | |
1039 | { | |
ec6fe57c | 1040 | /* Setup names for RESX-RESY-SPACING-AVWIDTH. */ |
c2f5bfd6 KH |
1041 | if (SYMBOLP (val) && ! NILP (val)) |
1042 | { | |
1043 | val = SYMBOL_NAME (val); | |
ec6fe57c | 1044 | f[XLFD_RESX_INDEX] = (char *) SDATA (val), len += SBYTES (val) + 1; |
c2f5bfd6 KH |
1045 | } |
1046 | else | |
ec6fe57c | 1047 | f[XLFD_RESX_INDEX] = "*-*-*-*", len += 6; |
c2f5bfd6 KH |
1048 | } |
1049 | else | |
ec6fe57c KH |
1050 | { |
1051 | Lisp_Object dpi = assq_no_quit (QCdpi, val); | |
1052 | Lisp_Object spacing = assq_no_quit (QCspacing, val); | |
1053 | Lisp_Object scalable = assq_no_quit (QCscalable, val); | |
1054 | ||
1055 | if (CONSP (dpi) || CONSP (spacing) || CONSP (scalable)) | |
1056 | { | |
1057 | char *str = alloca (24); | |
1058 | int this_len; | |
c2f5bfd6 | 1059 | |
ec6fe57c KH |
1060 | if (CONSP (dpi) && INTEGERP (XCDR (dpi))) |
1061 | this_len = sprintf (str, "%d-%d", | |
1062 | XINT (XCDR (dpi)), XINT (XCDR (dpi))); | |
1063 | else | |
1064 | this_len = sprintf (str, "*-*"); | |
1065 | if (CONSP (spacing) && ! NILP (XCDR (spacing))) | |
1066 | { | |
1067 | val = XCDR (spacing); | |
1068 | if (INTEGERP (val)) | |
1069 | { | |
1070 | if (XINT (val) < FONT_SPACING_MONO) | |
1071 | val = Qp; | |
1072 | else if (XINT (val) < FONT_SPACING_CHARCELL) | |
1073 | val = Qm; | |
1074 | else | |
1075 | val = Qc; | |
1076 | } | |
1077 | xassert (SYMBOLP (val)); | |
1078 | this_len += sprintf (str + this_len, "-%c", | |
1079 | SDATA (SYMBOL_NAME (val))[0]); | |
1080 | } | |
1081 | else | |
1082 | this_len += sprintf (str + this_len, "-*"); | |
1083 | if (CONSP (scalable) && ! NILP (XCDR (spacing))) | |
1084 | this_len += sprintf (str + this_len, "-0"); | |
1085 | else | |
1086 | this_len += sprintf (str + this_len, "-*"); | |
1087 | f[XLFD_RESX_INDEX] = str; | |
1088 | len += this_len; | |
1089 | } | |
1090 | else | |
1091 | f[XLFD_RESX_INDEX] = "*-*-*-*", len += 8; | |
1092 | } | |
1093 | ||
1094 | len++; /* for terminating '\0'. */ | |
c2f5bfd6 KH |
1095 | if (len >= nbytes) |
1096 | return -1; | |
ec6fe57c | 1097 | return sprintf (name, "-%s-%s-%s-%s-%s-%s-%s-%s-%s", |
c2f5bfd6 KH |
1098 | f[XLFD_FOUNDRY_INDEX], f[XLFD_FAMILY_INDEX], |
1099 | f[XLFD_WEIGHT_INDEX], f[XLFD_SLANT_INDEX], | |
1100 | f[XLFD_SWIDTH_INDEX], | |
ec6fe57c KH |
1101 | f[XLFD_ADSTYLE_INDEX], f[XLFD_PIXEL_INDEX], |
1102 | f[XLFD_RESX_INDEX], f[XLFD_REGISTRY_INDEX]); | |
c2f5bfd6 KH |
1103 | } |
1104 | ||
ef18374f | 1105 | /* Parse NAME (null terminated) as Fonconfig's name format and store |
9331887d KH |
1106 | information in FONT (font-spec or font-entity). If NAME is |
1107 | successfully parsed, return 0. Otherwise return -1. */ | |
ef18374f KH |
1108 | |
1109 | int | |
ec6fe57c | 1110 | font_parse_fcname (name, font) |
ef18374f KH |
1111 | char *name; |
1112 | Lisp_Object font; | |
ef18374f KH |
1113 | { |
1114 | char *p0, *p1; | |
9331887d KH |
1115 | int len = strlen (name); |
1116 | char *copy; | |
ef18374f | 1117 | |
ec6fe57c KH |
1118 | if (len == 0) |
1119 | return -1; | |
ef18374f KH |
1120 | /* It is assured that (name[0] && name[0] != '-'). */ |
1121 | if (name[0] == ':') | |
1122 | p0 = name; | |
1123 | else | |
1124 | { | |
ec6fe57c KH |
1125 | Lisp_Object family; |
1126 | double point_size; | |
1127 | ||
1128 | for (p0 = name + 1; *p0 && (*p0 != '-' && *p0 != ':'); p0++) | |
1129 | if (*p0 == '\\' && p0[1]) | |
1130 | p0++; | |
1131 | family = intern_font_field (name, p0 - name); | |
1132 | if (*p0 == '-') | |
ef18374f | 1133 | { |
ec6fe57c KH |
1134 | if (! isdigit (p0[1])) |
1135 | return -1; | |
1136 | point_size = strtod (p0 + 1, &p1); | |
1137 | if (*p1 && *p1 != ':') | |
1138 | return -1; | |
1139 | ASET (font, FONT_SIZE_INDEX, make_float (point_size)); | |
1140 | p0 = p1; | |
ef18374f | 1141 | } |
ec6fe57c | 1142 | ASET (font, FONT_FAMILY_INDEX, family); |
ef18374f | 1143 | } |
9331887d KH |
1144 | |
1145 | len -= p0 - name; | |
1146 | copy = alloca (len + 1); | |
1147 | if (! copy) | |
1148 | return -1; | |
1149 | name = copy; | |
1150 | ||
1151 | /* Now parse ":KEY=VAL" patterns. Store known keys and values in | |
1152 | extra, copy unknown ones to COPY. */ | |
ef18374f KH |
1153 | while (*p0) |
1154 | { | |
1155 | Lisp_Object key, val; | |
ec6fe57c | 1156 | int prop; |
ef18374f | 1157 | |
ec6fe57c | 1158 | for (p1 = p0 + 1; *p1 && *p1 != '=' && *p1 != ':'; p1++); |
9331887d | 1159 | if (*p1 != '=') |
ef18374f | 1160 | { |
9331887d KH |
1161 | /* Must be an enumerated value. */ |
1162 | val = intern_font_field (p0 + 1, p1 - p0 - 1); | |
9331887d KH |
1163 | if (memcmp (p0 + 1, "light", 5) == 0 |
1164 | || memcmp (p0 + 1, "medium", 6) == 0 | |
1165 | || memcmp (p0 + 1, "demibold", 8) == 0 | |
1166 | || memcmp (p0 + 1, "bold", 4) == 0 | |
1167 | || memcmp (p0 + 1, "black", 5) == 0) | |
1168 | { | |
ec6fe57c | 1169 | ASET (font, FONT_WEIGHT_INDEX, val); |
9331887d KH |
1170 | } |
1171 | else if (memcmp (p0 + 1, "roman", 5) == 0 | |
1172 | || memcmp (p0 + 1, "italic", 6) == 0 | |
1173 | || memcmp (p0 + 1, "oblique", 7) == 0) | |
1174 | { | |
ec6fe57c | 1175 | ASET (font, FONT_SLANT_INDEX, val); |
9331887d KH |
1176 | } |
1177 | else if (memcmp (p0 + 1, "charcell", 8) == 0 | |
1178 | || memcmp (p0 + 1, "mono", 4) == 0 | |
1179 | || memcmp (p0 + 1, "proportional", 12) == 0) | |
1180 | { | |
1181 | font_put_extra (font, QCspacing, | |
ec6fe57c | 1182 | (p0[1] == 'c' ? Qc : p0[1] == 'm' ? Qm : Qp)); |
9331887d KH |
1183 | } |
1184 | else | |
1185 | { | |
1186 | /* unknown key */ | |
1187 | bcopy (p0, copy, p1 - p0); | |
1188 | copy += p1 - p0; | |
1189 | } | |
ef18374f KH |
1190 | } |
1191 | else | |
1192 | { | |
9331887d KH |
1193 | if (memcmp (p0 + 1, "pixelsize=", 10) == 0) |
1194 | prop = FONT_SIZE_INDEX; | |
1195 | else | |
1196 | { | |
1197 | key = intern_font_field (p0, p1 - p0); | |
ec6fe57c | 1198 | prop = get_font_prop_index (key, 0); |
9331887d KH |
1199 | } |
1200 | p0 = p1 + 1; | |
1201 | for (p1 = p0; *p1 && *p1 != ':'; p1++); | |
ec6fe57c KH |
1202 | val = intern_font_field (p0, p1 - p0); |
1203 | if (! NILP (val)) | |
9331887d | 1204 | { |
ec6fe57c | 1205 | if (prop >= 0 && prop < FONT_EXTRA_INDEX) |
ef18374f | 1206 | { |
ec6fe57c KH |
1207 | ASET (font, prop, val); |
1208 | } | |
ec6fe57c | 1209 | else |
e950d6f1 | 1210 | font_put_extra (font, key, val); |
ef18374f KH |
1211 | } |
1212 | } | |
1213 | p0 = p1; | |
1214 | } | |
9331887d | 1215 | |
9331887d | 1216 | return 0; |
ef18374f KH |
1217 | } |
1218 | ||
1219 | /* Store fontconfig's font name of FONT (font-spec or font-entity) in | |
1220 | NAME (NBYTES length), and return the name length. If | |
1221 | FONT_SIZE_INDEX of FONT is 0, use PIXEL_SIZE instead. */ | |
1222 | ||
1223 | int | |
1224 | font_unparse_fcname (font, pixel_size, name, nbytes) | |
1225 | Lisp_Object font; | |
1226 | int pixel_size; | |
1227 | char *name; | |
1228 | int nbytes; | |
1229 | { | |
ec6fe57c KH |
1230 | Lisp_Object val; |
1231 | int point_size; | |
1232 | int dpi, spacing, scalable; | |
1233 | int i, len = 1; | |
ef18374f | 1234 | char *p; |
a9262bb8 | 1235 | Lisp_Object styles[3]; |
417a1b10 | 1236 | char *style_names[3] = { "weight", "slant", "width" }; |
ef18374f | 1237 | |
ec6fe57c KH |
1238 | val = AREF (font, FONT_FAMILY_INDEX); |
1239 | if (SYMBOLP (val) && ! NILP (val)) | |
1240 | len += SBYTES (SYMBOL_NAME (val)); | |
1241 | ||
1242 | val = AREF (font, FONT_SIZE_INDEX); | |
1243 | if (INTEGERP (val)) | |
ef18374f | 1244 | { |
ec6fe57c KH |
1245 | if (XINT (val) != 0) |
1246 | pixel_size = XINT (val); | |
1247 | point_size = -1; | |
1248 | len += 21; /* for ":pixelsize=NUM" */ | |
ef18374f | 1249 | } |
ec6fe57c | 1250 | else if (FLOATP (val)) |
ef18374f | 1251 | { |
ec6fe57c KH |
1252 | pixel_size = -1; |
1253 | point_size = (int) XFLOAT_DATA (val); | |
1254 | len += 11; /* for "-NUM" */ | |
ef18374f | 1255 | } |
ec6fe57c KH |
1256 | |
1257 | val = AREF (font, FONT_FOUNDRY_INDEX); | |
8e1ef8fd | 1258 | if (SYMBOLP (val) && ! NILP (val)) |
ef18374f | 1259 | /* ":foundry=NAME" */ |
ec6fe57c KH |
1260 | len += 9 + SBYTES (SYMBOL_NAME (val)); |
1261 | ||
a9262bb8 KH |
1262 | for (i = FONT_WEIGHT_INDEX; i <= FONT_WIDTH_INDEX; i++) |
1263 | { | |
1264 | val = AREF (font, i); | |
1265 | if (INTEGERP (val)) | |
1266 | { | |
1267 | val = prop_numeric_to_name (i, XINT (val)); | |
1268 | len += (strlen (style_names[i - FONT_WEIGHT_INDEX]) | |
1269 | + 2 + SBYTES (SYMBOL_NAME (val))); /* :xxx=NAME */ | |
1270 | } | |
1271 | styles[i - FONT_WEIGHT_INDEX] = val; | |
1272 | } | |
ec6fe57c KH |
1273 | |
1274 | val = AREF (font, FONT_EXTRA_INDEX); | |
1275 | if (FONT_ENTITY_P (font) | |
1276 | && EQ (AREF (font, FONT_TYPE_INDEX), Qx)) | |
1277 | { | |
1278 | char *p; | |
1279 | ||
1280 | /* VAL is a symbol of name `RESX-RESY-SPACING-AVWIDTH'. */ | |
1281 | p = (char *) SDATA (SYMBOL_NAME (val)); | |
1282 | dpi = atoi (p); | |
1283 | for (p++; *p != '-'; p++); /* skip RESX */ | |
1284 | for (p++; *p != '-'; p++); /* skip RESY */ | |
1285 | spacing = (*p == 'c' ? FONT_SPACING_CHARCELL | |
1286 | : *p == 'm' ? FONT_SPACING_MONO | |
1287 | : FONT_SPACING_PROPORTIONAL); | |
1288 | for (p++; *p != '-'; p++); /* skip SPACING */ | |
1289 | scalable = (atoi (p) == 0); | |
1290 | /* The longest pattern is ":dpi=NUM:scalable=False:spacing=100" */ | |
1291 | len += 42; | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | Lisp_Object elt; | |
1296 | ||
1297 | dpi = spacing = scalable = -1; | |
1298 | elt = assq_no_quit (QCdpi, val); | |
1299 | if (CONSP (elt)) | |
1300 | dpi = XINT (XCDR (elt)), len += 15; /* for ":dpi=NUM" */ | |
1301 | elt = assq_no_quit (QCspacing, val); | |
1302 | if (CONSP (elt)) | |
1303 | spacing = XINT (XCDR (elt)), len += 12; /* for ":spacing=100" */ | |
1304 | elt = assq_no_quit (QCscalable, val); | |
1305 | if (CONSP (elt)) | |
1306 | scalable = ! NILP (XCDR (elt)), len += 15; /* for ":scalable=False" */ | |
1307 | } | |
1308 | ||
ef18374f KH |
1309 | if (len > nbytes) |
1310 | return -1; | |
1311 | p = name; | |
1312 | if (! NILP (AREF (font, FONT_FAMILY_INDEX))) | |
a9262bb8 KH |
1313 | p += sprintf(p, "%s", |
1314 | SDATA (SYMBOL_NAME (AREF (font, FONT_FAMILY_INDEX)))); | |
ec6fe57c KH |
1315 | if (point_size > 0) |
1316 | { | |
1317 | if (p == name) | |
1318 | p += sprintf (p, "%d", point_size); | |
1319 | else | |
1320 | p += sprintf (p, "-%d", point_size); | |
1321 | } | |
ef18374f KH |
1322 | else if (pixel_size > 0) |
1323 | p += sprintf (p, ":pixelsize=%d", pixel_size); | |
a9262bb8 KH |
1324 | if (SYMBOLP (AREF (font, FONT_FOUNDRY_INDEX)) |
1325 | && ! NILP (AREF (font, FONT_FOUNDRY_INDEX))) | |
1326 | p += sprintf (p, ":foundry=%s", | |
1327 | SDATA (SYMBOL_NAME (AREF (font, FONT_FOUNDRY_INDEX)))); | |
1328 | for (i = 0; i < 3; i++) | |
f73891b0 | 1329 | if (SYMBOLP (styles[i]) && ! NILP (styles [i])) |
a9262bb8 KH |
1330 | p += sprintf (p, ":%s=%s", style_names[i], |
1331 | SDATA (SYMBOL_NAME (styles [i]))); | |
ec6fe57c KH |
1332 | if (dpi >= 0) |
1333 | p += sprintf (p, ":dpi=%d", dpi); | |
1334 | if (spacing >= 0) | |
1335 | p += sprintf (p, ":spacing=%d", spacing); | |
1336 | if (scalable > 0) | |
1337 | p += sprintf (p, ":scalable=True"); | |
1338 | else if (scalable == 0) | |
1339 | p += sprintf (p, ":scalable=False"); | |
ef18374f KH |
1340 | return (p - name); |
1341 | } | |
1342 | ||
1343 | /* Parse NAME (null terminated) and store information in FONT | |
1344 | (font-spec or font-entity). If NAME is successfully parsed, return | |
ec6fe57c | 1345 | 0. Otherwise return -1. |
ef18374f KH |
1346 | |
1347 | If NAME is XLFD and FONT is a font-entity, store | |
ec6fe57c KH |
1348 | RESX-RESY-SPACING-AVWIDTH information as a symbol in |
1349 | FONT_EXTRA_INDEX. */ | |
ef18374f KH |
1350 | |
1351 | static int | |
ec6fe57c | 1352 | font_parse_name (name, font) |
ef18374f KH |
1353 | char *name; |
1354 | Lisp_Object font; | |
ef18374f KH |
1355 | { |
1356 | if (name[0] == '-' || index (name, '*')) | |
e950d6f1 | 1357 | return font_parse_xlfd (name, font); |
ec6fe57c | 1358 | return font_parse_fcname (name, font); |
ef18374f KH |
1359 | } |
1360 | ||
c2f5bfd6 KH |
1361 | void |
1362 | font_merge_old_spec (name, family, registry, spec) | |
1363 | Lisp_Object name, family, registry, spec; | |
1364 | { | |
1365 | if (STRINGP (name)) | |
1366 | { | |
ec6fe57c | 1367 | if (font_parse_xlfd ((char *) SDATA (name), spec) < 0) |
c2f5bfd6 KH |
1368 | { |
1369 | Lisp_Object extra = Fcons (Fcons (QCname, name), Qnil); | |
1370 | ||
1371 | ASET (spec, FONT_EXTRA_INDEX, extra); | |
1372 | } | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | if (! NILP (family)) | |
1377 | { | |
1378 | int len; | |
1379 | char *p0, *p1; | |
1380 | ||
1381 | xassert (STRINGP (family)); | |
1382 | len = SBYTES (family); | |
1383 | p0 = (char *) SDATA (family); | |
1384 | p1 = index (p0, '-'); | |
1385 | if (p1) | |
1386 | { | |
0c363472 KH |
1387 | if ((*p0 != '*' || p1 - p0 > 1) |
1388 | && NILP (AREF (spec, FONT_FOUNDRY_INDEX))) | |
c2f5bfd6 KH |
1389 | ASET (spec, FONT_FOUNDRY_INDEX, |
1390 | intern_downcase (p0, p1 - p0)); | |
1391 | if (NILP (AREF (spec, FONT_FAMILY_INDEX))) | |
1392 | ASET (spec, FONT_FAMILY_INDEX, | |
1393 | intern_downcase (p1 + 1, len - (p1 + 1 - p0))); | |
1394 | } | |
1395 | else if (NILP (AREF (spec, FONT_FAMILY_INDEX))) | |
1396 | ASET (spec, FONT_FAMILY_INDEX, intern_downcase (p0, len)); | |
1397 | } | |
1398 | if (! NILP (registry) | |
1399 | && NILP (AREF (spec, FONT_REGISTRY_INDEX))) | |
1400 | ASET (spec, FONT_REGISTRY_INDEX, | |
1401 | intern_downcase ((char *) SDATA (registry), SBYTES (registry))); | |
1402 | } | |
1403 | } | |
1404 | ||
10d16101 KH |
1405 | static Lisp_Object |
1406 | font_lispy_object (font) | |
1407 | struct font *font; | |
1408 | { | |
1409 | Lisp_Object objlist = AREF (font->entity, FONT_OBJLIST_INDEX); | |
1410 | ||
1411 | for (; ! NILP (objlist); objlist = XCDR (objlist)) | |
1412 | { | |
1413 | struct Lisp_Save_Value *p = XSAVE_VALUE (XCAR (objlist)); | |
1414 | ||
1415 | if (font == (struct font *) p->pointer) | |
1416 | break; | |
1417 | } | |
1418 | xassert (! NILP (objlist)); | |
1419 | return XCAR (objlist); | |
1420 | } | |
1421 | ||
e950d6f1 KH |
1422 | #define LGSTRING_HEADER_SIZE 6 |
1423 | #define LGSTRING_GLYPH_SIZE 8 | |
1424 | ||
1425 | static int | |
1426 | check_gstring (gstring) | |
1427 | Lisp_Object gstring; | |
1428 | { | |
1429 | Lisp_Object val; | |
1430 | int i, j; | |
1431 | ||
1432 | CHECK_VECTOR (gstring); | |
1433 | val = AREF (gstring, 0); | |
1434 | CHECK_VECTOR (val); | |
1435 | if (ASIZE (val) < LGSTRING_HEADER_SIZE) | |
1436 | goto err; | |
1437 | CHECK_FONT_OBJECT (LGSTRING_FONT (gstring)); | |
1438 | if (! NILP (LGSTRING_LBEARING (gstring))) | |
1439 | CHECK_NUMBER (LGSTRING_LBEARING (gstring)); | |
1440 | if (! NILP (LGSTRING_RBEARING (gstring))) | |
1441 | CHECK_NUMBER (LGSTRING_RBEARING (gstring)); | |
1442 | if (! NILP (LGSTRING_WIDTH (gstring))) | |
1443 | CHECK_NATNUM (LGSTRING_WIDTH (gstring)); | |
1444 | if (! NILP (LGSTRING_ASCENT (gstring))) | |
1445 | CHECK_NUMBER (LGSTRING_ASCENT (gstring)); | |
1446 | if (! NILP (LGSTRING_DESCENT (gstring))) | |
1447 | CHECK_NUMBER (LGSTRING_DESCENT(gstring)); | |
1448 | ||
1449 | for (i = 0; i < LGSTRING_LENGTH (gstring); i++) | |
1450 | { | |
1451 | val = LGSTRING_GLYPH (gstring, i); | |
1452 | CHECK_VECTOR (val); | |
1453 | if (ASIZE (val) < LGSTRING_GLYPH_SIZE) | |
1454 | goto err; | |
1455 | if (NILP (LGLYPH_CHAR (val))) | |
1456 | break; | |
1457 | CHECK_NATNUM (LGLYPH_FROM (val)); | |
1458 | CHECK_NATNUM (LGLYPH_TO (val)); | |
1459 | CHECK_CHARACTER (LGLYPH_CHAR (val)); | |
1460 | if (! NILP (LGLYPH_CODE (val))) | |
1461 | CHECK_NATNUM (LGLYPH_CODE (val)); | |
1462 | if (! NILP (LGLYPH_WIDTH (val))) | |
1463 | CHECK_NATNUM (LGLYPH_WIDTH (val)); | |
1464 | if (! NILP (LGLYPH_ADJUSTMENT (val))) | |
1465 | { | |
1466 | val = LGLYPH_ADJUSTMENT (val); | |
1467 | CHECK_VECTOR (val); | |
1468 | if (ASIZE (val) < 3) | |
1469 | goto err; | |
1470 | for (j = 0; j < 3; j++) | |
1471 | CHECK_NUMBER (AREF (val, j)); | |
1472 | } | |
1473 | } | |
1474 | return i; | |
1475 | err: | |
1476 | error ("Invalid glyph-string format"); | |
1477 | return -1; | |
1478 | } | |
1479 | ||
c2f5bfd6 KH |
1480 | \f |
1481 | /* OTF handler */ | |
1482 | ||
1483 | #ifdef HAVE_LIBOTF | |
1484 | #include <otf.h> | |
1485 | ||
1486 | struct otf_list | |
1487 | { | |
1488 | Lisp_Object entity; | |
1489 | OTF *otf; | |
1490 | struct otf_list *next; | |
1491 | }; | |
1492 | ||
1493 | static struct otf_list *otf_list; | |
1494 | ||
1495 | static Lisp_Object | |
1496 | otf_tag_symbol (tag) | |
1497 | OTF_Tag tag; | |
1498 | { | |
1499 | char name[5]; | |
1500 | ||
1501 | OTF_tag_name (tag, name); | |
1502 | return Fintern (make_unibyte_string (name, 4), Qnil); | |
1503 | } | |
1504 | ||
1505 | static OTF * | |
1506 | otf_open (entity, file) | |
1507 | Lisp_Object entity; | |
1508 | char *file; | |
1509 | { | |
1510 | struct otf_list *list = otf_list; | |
1511 | ||
1512 | while (list && ! EQ (list->entity, entity)) | |
1513 | list = list->next; | |
1514 | if (! list) | |
1515 | { | |
1516 | list = malloc (sizeof (struct otf_list)); | |
1517 | list->entity = entity; | |
1518 | list->otf = file ? OTF_open (file) : NULL; | |
1519 | list->next = otf_list; | |
1520 | otf_list = list; | |
1521 | } | |
1522 | return list->otf; | |
1523 | } | |
1524 | ||
1525 | ||
1526 | /* Return a list describing which scripts/languages FONT supports by | |
1527 | which GSUB/GPOS features of OpenType tables. See the comment of | |
1528 | (sturct font_driver).otf_capability. */ | |
1529 | ||
1530 | Lisp_Object | |
1531 | font_otf_capability (font) | |
1532 | struct font *font; | |
1533 | { | |
1534 | OTF *otf; | |
1535 | Lisp_Object capability = Fcons (Qnil, Qnil); | |
1536 | int i; | |
1537 | ||
1538 | otf = otf_open (font->entity, font->file_name); | |
1539 | if (! otf) | |
1540 | return Qnil; | |
1541 | for (i = 0; i < 2; i++) | |
1542 | { | |
1543 | OTF_GSUB_GPOS *gsub_gpos; | |
1544 | Lisp_Object script_list = Qnil; | |
1545 | int j; | |
1546 | ||
1547 | if (OTF_get_features (otf, i == 0) < 0) | |
1548 | continue; | |
1549 | gsub_gpos = i == 0 ? otf->gsub : otf->gpos; | |
1550 | for (j = gsub_gpos->ScriptList.ScriptCount - 1; j >= 0; j--) | |
1551 | { | |
1552 | OTF_Script *script = gsub_gpos->ScriptList.Script + j; | |
1553 | Lisp_Object langsys_list = Qnil; | |
1554 | Lisp_Object script_tag = otf_tag_symbol (script->ScriptTag); | |
1555 | int k; | |
1556 | ||
1557 | for (k = script->LangSysCount; k >= 0; k--) | |
1558 | { | |
1559 | OTF_LangSys *langsys; | |
1560 | Lisp_Object feature_list = Qnil; | |
1561 | Lisp_Object langsys_tag; | |
1562 | int l; | |
1563 | ||
e80e09b4 | 1564 | if (k == script->LangSysCount) |
c2f5bfd6 KH |
1565 | { |
1566 | langsys = &script->DefaultLangSys; | |
1567 | langsys_tag = Qnil; | |
1568 | } | |
1569 | else | |
1570 | { | |
1571 | langsys = script->LangSys + k; | |
1572 | langsys_tag | |
1573 | = otf_tag_symbol (script->LangSysRecord[k].LangSysTag); | |
1574 | } | |
e80e09b4 | 1575 | for (l = langsys->FeatureCount - 1; l >= 0; l--) |
c2f5bfd6 KH |
1576 | { |
1577 | OTF_Feature *feature | |
1578 | = gsub_gpos->FeatureList.Feature + langsys->FeatureIndex[l]; | |
1579 | Lisp_Object feature_tag | |
1580 | = otf_tag_symbol (feature->FeatureTag); | |
1581 | ||
1582 | feature_list = Fcons (feature_tag, feature_list); | |
1583 | } | |
1584 | langsys_list = Fcons (Fcons (langsys_tag, feature_list), | |
1585 | langsys_list); | |
1586 | } | |
1587 | script_list = Fcons (Fcons (script_tag, langsys_list), | |
1588 | script_list); | |
1589 | } | |
1590 | ||
1591 | if (i == 0) | |
1592 | XSETCAR (capability, script_list); | |
1593 | else | |
1594 | XSETCDR (capability, script_list); | |
1595 | } | |
1596 | ||
1597 | return capability; | |
1598 | } | |
1599 | ||
e80e09b4 KH |
1600 | static void |
1601 | parse_gsub_gpos_spec (spec, script, langsys, features, nbytes) | |
c2f5bfd6 | 1602 | Lisp_Object spec; |
e80e09b4 KH |
1603 | char **script, **langsys, *features; |
1604 | int nbytes; | |
c2f5bfd6 KH |
1605 | { |
1606 | Lisp_Object val; | |
e80e09b4 | 1607 | char *p, *pend; |
c2f5bfd6 KH |
1608 | int asterisk; |
1609 | ||
e80e09b4 | 1610 | CHECK_CONS (spec); |
c2f5bfd6 | 1611 | val = XCAR (spec); |
e80e09b4 | 1612 | CHECK_SYMBOL (val); |
c2f5bfd6 KH |
1613 | *script = (char *) SDATA (SYMBOL_NAME (val)); |
1614 | spec = XCDR (spec); | |
e80e09b4 | 1615 | CHECK_CONS (spec); |
c2f5bfd6 | 1616 | val = XCAR (spec); |
e80e09b4 | 1617 | CHECK_SYMBOL (val); |
c2f5bfd6 KH |
1618 | *langsys = NILP (val) ? NULL : (char *) SDATA (SYMBOL_NAME (val)); |
1619 | spec = XCDR (spec); | |
c2f5bfd6 | 1620 | |
e80e09b4 KH |
1621 | p = features, pend = p + nbytes - 1; |
1622 | *p = '\0'; | |
c2f5bfd6 KH |
1623 | for (asterisk = 0; CONSP (spec); spec = XCDR (spec)) |
1624 | { | |
1625 | val = XCAR (spec); | |
e80e09b4 KH |
1626 | CHECK_SYMBOL (val); |
1627 | if (p > features) | |
1628 | { | |
1629 | if (p >= pend) | |
1630 | break; | |
1631 | *p++ = ','; | |
1632 | } | |
c2f5bfd6 KH |
1633 | if (SREF (SYMBOL_NAME (val), 0) == '*') |
1634 | { | |
1635 | asterisk = 1; | |
e80e09b4 KH |
1636 | if (p >= pend) |
1637 | break; | |
1638 | *p++ = '*'; | |
c2f5bfd6 KH |
1639 | } |
1640 | else if (! asterisk) | |
e80e09b4 KH |
1641 | { |
1642 | val = SYMBOL_NAME (val); | |
1643 | if (p + SBYTES (val) >= pend) | |
1644 | break; | |
1645 | p += sprintf (p, "%s", SDATA (val)); | |
1646 | } | |
c2f5bfd6 | 1647 | else |
e80e09b4 KH |
1648 | { |
1649 | val = SYMBOL_NAME (val); | |
1650 | if (p + 1 + SBYTES (val)>= pend) | |
1651 | break; | |
1652 | p += sprintf (p, "~%s", SDATA (val)); | |
1653 | } | |
c2f5bfd6 | 1654 | } |
e80e09b4 KH |
1655 | if (CONSP (spec)) |
1656 | error ("OTF spec too long"); | |
1657 | } | |
1658 | ||
c2f5bfd6 KH |
1659 | #define DEVICE_DELTA(table, size) \ |
1660 | (((size) >= (table).StartSize && (size) <= (table).EndSize) \ | |
0c363472 | 1661 | ? (table).DeltaValue[(size) - (table).StartSize] \ |
c2f5bfd6 KH |
1662 | : 0) |
1663 | ||
1664 | void | |
1665 | adjust_anchor (struct font *font, OTF_Anchor *anchor, | |
1666 | unsigned code, int size, int *x, int *y) | |
1667 | { | |
1668 | if (anchor->AnchorFormat == 2) | |
1669 | { | |
1670 | int x0, y0; | |
1671 | ||
1672 | if (font->driver->anchor_point (font, code, anchor->f.f1.AnchorPoint, | |
1673 | &x0, &y0) >= 0) | |
1674 | *x = x0, *y = y0; | |
1675 | } | |
1676 | else if (anchor->AnchorFormat == 3) | |
1677 | { | |
1678 | if (anchor->f.f2.XDeviceTable.offset) | |
1679 | *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, size); | |
1680 | if (anchor->f.f2.YDeviceTable.offset) | |
1681 | *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, size); | |
1682 | } | |
1683 | } | |
1684 | ||
e80e09b4 | 1685 | #define REPLACEMENT_CHARACTER 0xFFFD |
c2f5bfd6 KH |
1686 | |
1687 | /* Drive FONT's OTF GSUB features according to GSUB_SPEC. See the | |
1688 | comment of (sturct font_driver).otf_gsub. */ | |
1689 | ||
1690 | int | |
e80e09b4 KH |
1691 | font_otf_gsub (font, gsub_spec, gstring_in, from, to, gstring_out, idx, |
1692 | alternate_subst) | |
c2f5bfd6 KH |
1693 | struct font *font; |
1694 | Lisp_Object gsub_spec; | |
1695 | Lisp_Object gstring_in; | |
1696 | int from, to; | |
1697 | Lisp_Object gstring_out; | |
e80e09b4 | 1698 | int idx, alternate_subst; |
c2f5bfd6 KH |
1699 | { |
1700 | int len; | |
1701 | int i; | |
1702 | OTF *otf; | |
1703 | OTF_GlyphString otf_gstring; | |
1704 | OTF_Glyph *g; | |
e80e09b4 KH |
1705 | char *script, *langsys, features[256]; |
1706 | int need_cmap; | |
1707 | ||
1708 | parse_gsub_gpos_spec (gsub_spec, &script, &langsys, features, 256); | |
c2f5bfd6 KH |
1709 | |
1710 | otf = otf_open (font->entity, font->file_name); | |
1711 | if (! otf) | |
1712 | return 0; | |
1713 | if (OTF_get_table (otf, "head") < 0) | |
1714 | return 0; | |
e80e09b4 KH |
1715 | if (OTF_get_table (otf, "cmap") < 0) |
1716 | return 0; | |
c2f5bfd6 KH |
1717 | if (OTF_check_table (otf, "GSUB") < 0) |
1718 | return 0; | |
c2f5bfd6 KH |
1719 | len = to - from; |
1720 | otf_gstring.size = otf_gstring.used = len; | |
1721 | otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len); | |
1722 | memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len); | |
e80e09b4 | 1723 | for (i = 0, need_cmap = 0; i < len; i++) |
c2f5bfd6 KH |
1724 | { |
1725 | Lisp_Object g = LGSTRING_GLYPH (gstring_in, from + i); | |
1726 | ||
1727 | otf_gstring.glyphs[i].c = XINT (LGLYPH_CHAR (g)); | |
e80e09b4 KH |
1728 | if (otf_gstring.glyphs[i].c == REPLACEMENT_CHARACTER) |
1729 | otf_gstring.glyphs[i].c = 0; | |
1730 | if (NILP (LGLYPH_CODE (g))) | |
1731 | { | |
1732 | otf_gstring.glyphs[i].glyph_id = 0; | |
1733 | need_cmap = 1; | |
1734 | } | |
1735 | else | |
1736 | otf_gstring.glyphs[i].glyph_id = XINT (LGLYPH_CODE (g)); | |
c2f5bfd6 KH |
1737 | } |
1738 | ||
e80e09b4 KH |
1739 | if (need_cmap) |
1740 | OTF_drive_cmap (otf, &otf_gstring); | |
c2f5bfd6 | 1741 | OTF_drive_gdef (otf, &otf_gstring); |
e80e09b4 KH |
1742 | if ((alternate_subst |
1743 | ? OTF_drive_gsub_alternate (otf, &otf_gstring, script, langsys, features) | |
1744 | : OTF_drive_gsub (otf, &otf_gstring, script, langsys, features)) < 0) | |
c2f5bfd6 KH |
1745 | { |
1746 | free (otf_gstring.glyphs); | |
1747 | return 0; | |
1748 | } | |
1749 | if (ASIZE (gstring_out) < idx + otf_gstring.used) | |
1750 | { | |
1751 | free (otf_gstring.glyphs); | |
1752 | return -1; | |
1753 | } | |
1754 | ||
1755 | for (i = 0, g = otf_gstring.glyphs; i < otf_gstring.used;) | |
1756 | { | |
1757 | int i0 = g->f.index.from, i1 = g->f.index.to; | |
1758 | Lisp_Object glyph = LGSTRING_GLYPH (gstring_in, from + i0); | |
1759 | Lisp_Object min_idx = AREF (glyph, 0); | |
1760 | Lisp_Object max_idx = AREF (glyph, 1); | |
1761 | ||
1762 | if (i0 < i1) | |
1763 | { | |
1764 | int min_idx_i = XINT (min_idx), max_idx_i = XINT (max_idx); | |
1765 | ||
1766 | for (i0++; i0 <= i1; i0++) | |
1767 | { | |
1768 | glyph = LGSTRING_GLYPH (gstring_in, from + i0); | |
1769 | if (min_idx_i > XINT (AREF (glyph, 0))) | |
1770 | min_idx_i = XINT (AREF (glyph, 0)); | |
1771 | if (max_idx_i < XINT (AREF (glyph, 1))) | |
1772 | max_idx_i = XINT (AREF (glyph, 1)); | |
1773 | } | |
1774 | min_idx = make_number (min_idx_i); | |
1775 | max_idx = make_number (max_idx_i); | |
1776 | i0 = g->f.index.from; | |
1777 | } | |
1778 | for (; i < otf_gstring.used && g->f.index.from == i0; i++, g++) | |
1779 | { | |
1780 | glyph = LGSTRING_GLYPH (gstring_out, idx + i); | |
1781 | ASET (glyph, 0, min_idx); | |
1782 | ASET (glyph, 1, max_idx); | |
e80e09b4 KH |
1783 | if (g->c > 0) |
1784 | LGLYPH_SET_CHAR (glyph, make_number (g->c)); | |
1785 | else | |
1786 | LGLYPH_SET_CHAR (glyph, make_number (REPLACEMENT_CHARACTER)); | |
c2f5bfd6 KH |
1787 | LGLYPH_SET_CODE (glyph, make_number (g->glyph_id)); |
1788 | } | |
1789 | } | |
1790 | ||
1791 | free (otf_gstring.glyphs); | |
1792 | return i; | |
1793 | } | |
1794 | ||
1795 | /* Drive FONT's OTF GPOS features according to GPOS_SPEC. See the | |
1796 | comment of (sturct font_driver).otf_gpos. */ | |
1797 | ||
1798 | int | |
1799 | font_otf_gpos (font, gpos_spec, gstring, from, to) | |
1800 | struct font *font; | |
1801 | Lisp_Object gpos_spec; | |
1802 | Lisp_Object gstring; | |
1803 | int from, to; | |
1804 | { | |
1805 | int len; | |
1806 | int i; | |
1807 | OTF *otf; | |
1808 | OTF_GlyphString otf_gstring; | |
1809 | OTF_Glyph *g; | |
e80e09b4 KH |
1810 | char *script, *langsys, features[256]; |
1811 | int need_cmap; | |
c2f5bfd6 KH |
1812 | Lisp_Object glyph; |
1813 | int u, size; | |
1814 | Lisp_Object base, mark; | |
1815 | ||
e80e09b4 KH |
1816 | parse_gsub_gpos_spec (gpos_spec, &script, &langsys, features, 256); |
1817 | ||
c2f5bfd6 KH |
1818 | otf = otf_open (font->entity, font->file_name); |
1819 | if (! otf) | |
1820 | return 0; | |
1821 | if (OTF_get_table (otf, "head") < 0) | |
1822 | return 0; | |
e80e09b4 KH |
1823 | if (OTF_get_table (otf, "cmap") < 0) |
1824 | return 0; | |
c2f5bfd6 KH |
1825 | if (OTF_check_table (otf, "GPOS") < 0) |
1826 | return 0; | |
c2f5bfd6 KH |
1827 | len = to - from; |
1828 | otf_gstring.size = otf_gstring.used = len; | |
1829 | otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len); | |
1830 | memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len); | |
e80e09b4 | 1831 | for (i = 0, need_cmap = 0; i < len; i++) |
c2f5bfd6 KH |
1832 | { |
1833 | glyph = LGSTRING_GLYPH (gstring, from + i); | |
e80e09b4 KH |
1834 | otf_gstring.glyphs[i].c = XINT (LGLYPH_CHAR (glyph)); |
1835 | if (otf_gstring.glyphs[i].c == REPLACEMENT_CHARACTER) | |
1836 | otf_gstring.glyphs[i].c = 0; | |
1837 | if (NILP (LGLYPH_CODE (glyph))) | |
1838 | { | |
1839 | otf_gstring.glyphs[i].glyph_id = 0; | |
1840 | need_cmap = 1; | |
1841 | } | |
1842 | else | |
1843 | otf_gstring.glyphs[i].glyph_id = XINT (LGLYPH_CODE (glyph)); | |
c2f5bfd6 | 1844 | } |
e80e09b4 KH |
1845 | if (need_cmap) |
1846 | OTF_drive_cmap (otf, &otf_gstring); | |
c2f5bfd6 KH |
1847 | OTF_drive_gdef (otf, &otf_gstring); |
1848 | ||
1849 | if (OTF_drive_gpos (otf, &otf_gstring, script, langsys, features) < 0) | |
1850 | { | |
1851 | free (otf_gstring.glyphs); | |
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | u = otf->head->unitsPerEm; | |
1856 | size = font->pixel_size; | |
1857 | base = mark = Qnil; | |
1858 | for (i = 0, g = otf_gstring.glyphs; i < otf_gstring.used; i++, g++) | |
1859 | { | |
1860 | Lisp_Object prev; | |
0c363472 | 1861 | int xoff = 0, yoff = 0, width_adjust = 0; |
c2f5bfd6 KH |
1862 | |
1863 | if (! g->glyph_id) | |
1864 | continue; | |
1865 | ||
1866 | glyph = LGSTRING_GLYPH (gstring, from + i); | |
1867 | switch (g->positioning_type) | |
1868 | { | |
1869 | case 0: | |
1870 | break; | |
1871 | case 1: case 2: | |
1872 | { | |
1873 | int format = g->f.f1.format; | |
1874 | ||
1875 | if (format & OTF_XPlacement) | |
1876 | xoff = g->f.f1.value->XPlacement * size / u; | |
1877 | if (format & OTF_XPlaDevice) | |
1878 | xoff += DEVICE_DELTA (g->f.f1.value->XPlaDevice, size); | |
1879 | if (format & OTF_YPlacement) | |
1880 | yoff = - (g->f.f1.value->YPlacement * size / u); | |
1881 | if (format & OTF_YPlaDevice) | |
1882 | yoff -= DEVICE_DELTA (g->f.f1.value->YPlaDevice, size); | |
1883 | if (format & OTF_XAdvance) | |
1884 | width_adjust += g->f.f1.value->XAdvance * size / u; | |
1885 | if (format & OTF_XAdvDevice) | |
1886 | width_adjust += DEVICE_DELTA (g->f.f1.value->XAdvDevice, size); | |
1887 | } | |
1888 | break; | |
1889 | case 3: | |
1890 | /* Not yet supported. */ | |
1891 | break; | |
1892 | case 4: case 5: | |
1893 | if (NILP (base)) | |
1894 | break; | |
1895 | prev = base; | |
1896 | goto label_adjust_anchor; | |
1897 | default: /* i.e. case 6 */ | |
1898 | if (NILP (mark)) | |
1899 | break; | |
1900 | prev = mark; | |
1901 | ||
1902 | label_adjust_anchor: | |
1903 | { | |
1904 | int base_x, base_y, mark_x, mark_y, width; | |
1905 | unsigned code; | |
1906 | ||
1907 | base_x = g->f.f4.base_anchor->XCoordinate * size / u; | |
1908 | base_y = g->f.f4.base_anchor->YCoordinate * size / u; | |
1909 | mark_x = g->f.f4.mark_anchor->XCoordinate * size / u; | |
1910 | mark_y = g->f.f4.mark_anchor->YCoordinate * size / u; | |
1911 | ||
1912 | code = XINT (LGLYPH_CODE (prev)); | |
1913 | if (g->f.f4.base_anchor->AnchorFormat != 1) | |
1914 | adjust_anchor (font, g->f.f4.base_anchor, | |
1915 | code, size, &base_x, &base_y); | |
1916 | if (g->f.f4.mark_anchor->AnchorFormat != 1) | |
1917 | adjust_anchor (font, g->f.f4.mark_anchor, | |
1918 | code, size, &mark_x, &mark_y); | |
1919 | ||
1920 | if (NILP (LGLYPH_WIDTH (prev))) | |
1921 | { | |
1922 | width = font->driver->text_extents (font, &code, 1, NULL); | |
1923 | LGLYPH_SET_WIDTH (prev, make_number (width)); | |
1924 | } | |
0c363472 KH |
1925 | else |
1926 | width = XINT (LGLYPH_WIDTH (prev)); | |
c2f5bfd6 KH |
1927 | xoff = XINT (LGLYPH_XOFF (prev)) + (base_x - width) - mark_x; |
1928 | yoff = XINT (LGLYPH_YOFF (prev)) + mark_y - base_y; | |
1929 | } | |
1930 | } | |
0c363472 KH |
1931 | |
1932 | if (xoff || yoff || width_adjust) | |
1933 | { | |
1934 | Lisp_Object adjustment = Fmake_vector (make_number (3), Qnil); | |
1935 | ||
1936 | ASET (adjustment, 0, make_number (xoff)); | |
1937 | ASET (adjustment, 1, make_number (yoff)); | |
1938 | ASET (adjustment, 2, make_number (width_adjust)); | |
1939 | LGLYPH_SET_ADJUSTMENT (glyph, adjustment); | |
1940 | } | |
1941 | ||
c2f5bfd6 KH |
1942 | if (g->GlyphClass == OTF_GlyphClass0) |
1943 | base = mark = glyph; | |
1944 | else if (g->GlyphClass == OTF_GlyphClassMark) | |
1945 | mark = glyph; | |
1946 | else | |
1947 | base = glyph; | |
c2f5bfd6 KH |
1948 | } |
1949 | ||
1950 | free (otf_gstring.glyphs); | |
e80e09b4 | 1951 | return i; |
c2f5bfd6 KH |
1952 | } |
1953 | ||
1954 | #endif /* HAVE_LIBOTF */ | |
1955 | ||
1956 | \f | |
e80e09b4 KH |
1957 | /* G-string (glyph string) handler */ |
1958 | ||
1959 | /* G-string is a vector of the form [HEADER GLYPH ...]. | |
1960 | See the docstring of `font-make-gstring' for more detail. */ | |
c2f5bfd6 KH |
1961 | |
1962 | struct font * | |
1963 | font_prepare_composition (cmp) | |
1964 | struct composition *cmp; | |
1965 | { | |
1966 | Lisp_Object gstring | |
1967 | = AREF (XHASH_TABLE (composition_hash_table)->key_and_value, | |
1968 | cmp->hash_index * 2); | |
1969 | struct font *font = XSAVE_VALUE (LGSTRING_FONT (gstring))->pointer; | |
1970 | int len = LGSTRING_LENGTH (gstring); | |
1971 | int i; | |
1972 | ||
1973 | cmp->font = font; | |
1974 | cmp->lbearing = cmp->rbearing = cmp->pixel_width = 0; | |
1975 | cmp->ascent = font->ascent; | |
1976 | cmp->descent = font->descent; | |
1977 | ||
1978 | for (i = 0; i < len; i++) | |
1979 | { | |
1980 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
10d16101 | 1981 | unsigned code; |
c2f5bfd6 KH |
1982 | struct font_metrics metrics; |
1983 | ||
10d16101 KH |
1984 | if (NILP (LGLYPH_FROM (g))) |
1985 | break; | |
1986 | code = XINT (LGLYPH_CODE (g)); | |
c2f5bfd6 KH |
1987 | font->driver->text_extents (font, &code, 1, &metrics); |
1988 | LGLYPH_SET_WIDTH (g, make_number (metrics.width)); | |
0c363472 KH |
1989 | metrics.lbearing += LGLYPH_XOFF (g); |
1990 | metrics.rbearing += LGLYPH_XOFF (g); | |
1991 | metrics.ascent += LGLYPH_YOFF (g); | |
1992 | metrics.descent += LGLYPH_YOFF (g); | |
c2f5bfd6 KH |
1993 | |
1994 | if (cmp->lbearing > cmp->pixel_width + metrics.lbearing) | |
1995 | cmp->lbearing = cmp->pixel_width + metrics.lbearing; | |
1996 | if (cmp->rbearing < cmp->pixel_width + metrics.rbearing) | |
1997 | cmp->rbearing = cmp->pixel_width + metrics.rbearing; | |
1998 | if (cmp->ascent < metrics.ascent) | |
1999 | cmp->ascent = metrics.ascent; | |
2000 | if (cmp->descent < metrics.descent) | |
2001 | cmp->descent = metrics.descent; | |
0c363472 | 2002 | cmp->pixel_width += metrics.width + LGLYPH_WADJUST (g); |
c2f5bfd6 | 2003 | } |
e80e09b4 | 2004 | cmp->glyph_len = i; |
c2f5bfd6 KH |
2005 | LGSTRING_SET_LBEARING (gstring, make_number (cmp->lbearing)); |
2006 | LGSTRING_SET_RBEARING (gstring, make_number (cmp->rbearing)); | |
2007 | LGSTRING_SET_WIDTH (gstring, make_number (cmp->pixel_width)); | |
2008 | LGSTRING_SET_ASCENT (gstring, make_number (cmp->ascent)); | |
2009 | LGSTRING_SET_DESCENT (gstring, make_number (cmp->descent)); | |
2010 | ||
2011 | return font; | |
2012 | } | |
2013 | ||
2014 | int | |
2015 | font_gstring_produce (old, from, to, new, idx, code, n) | |
2016 | Lisp_Object old; | |
2017 | int from, to; | |
2018 | Lisp_Object new; | |
2019 | int idx; | |
2020 | unsigned *code; | |
2021 | int n; | |
2022 | { | |
2023 | Lisp_Object min_idx, max_idx; | |
2024 | int i; | |
2025 | ||
2026 | if (idx + n > ASIZE (new)) | |
2027 | return -1; | |
2028 | if (from == to) | |
2029 | { | |
2030 | if (from == 0) | |
2031 | { | |
2032 | min_idx = make_number (0); | |
2033 | max_idx = make_number (1); | |
2034 | } | |
2035 | else | |
2036 | { | |
2037 | min_idx = AREF (AREF (old, from - 1), 0); | |
2038 | max_idx = AREF (AREF (old, from - 1), 1); | |
2039 | } | |
2040 | } | |
2041 | else if (from + 1 == to) | |
2042 | { | |
2043 | min_idx = AREF (AREF (old, from), 0); | |
2044 | max_idx = AREF (AREF (old, from), 1); | |
2045 | } | |
2046 | else | |
2047 | { | |
2048 | int min_idx_i = XINT (AREF (AREF (old, from), 0)); | |
2049 | int max_idx_i = XINT (AREF (AREF (old, from), 1)); | |
2050 | ||
2051 | for (i = from + 1; i < to; i++) | |
2052 | { | |
2053 | if (min_idx_i > XINT (AREF (AREF (old, i), 0))) | |
2054 | min_idx_i = XINT (AREF (AREF (old, i), 0)); | |
2055 | if (max_idx_i < XINT (AREF (AREF (old, i), 1))) | |
2056 | max_idx_i = XINT (AREF (AREF (old, i), 1)); | |
2057 | } | |
2058 | min_idx = make_number (min_idx_i); | |
2059 | max_idx = make_number (max_idx_i); | |
2060 | } | |
2061 | ||
2062 | for (i = 0; i < n; i++) | |
2063 | { | |
2064 | ASET (AREF (new, idx + i), 0, min_idx); | |
2065 | ASET (AREF (new, idx + i), 1, max_idx); | |
2066 | ASET (AREF (new, idx + i), 2, make_number (code[i])); | |
2067 | } | |
2068 | ||
2069 | return 0; | |
2070 | } | |
2071 | \f | |
2072 | /* Font sorting */ | |
2073 | ||
9331887d | 2074 | static unsigned font_score P_ ((Lisp_Object, Lisp_Object *)); |
c2f5bfd6 KH |
2075 | static int font_compare P_ ((const void *, const void *)); |
2076 | static Lisp_Object font_sort_entites P_ ((Lisp_Object, Lisp_Object, | |
2077 | Lisp_Object, Lisp_Object)); | |
2078 | ||
2079 | /* We sort fonts by scoring each of them against a specified | |
2080 | font-spec. The score value is 32 bit (`unsigned'), and the smaller | |
2081 | the value is, the closer the font is to the font-spec. | |
2082 | ||
2083 | Each 1-bit in the highest 4 bits of the score is used for atomic | |
2084 | properties FOUNDRY, FAMILY, ADSTYLE, and REGISTRY. | |
2085 | ||
2086 | Each 7-bit in the lowest 28 bits are used for numeric properties | |
2087 | WEIGHT, SLANT, WIDTH, and SIZE. */ | |
2088 | ||
2089 | /* How many bits to shift to store the difference value of each font | |
2090 | property in a score. */ | |
2091 | static int sort_shift_bits[FONT_SIZE_INDEX + 1]; | |
2092 | ||
9331887d KH |
2093 | /* Score font-entity ENTITY against properties of font-spec SPEC_PROP. |
2094 | The return value indicates how different ENTITY is compared with | |
2095 | SPEC_PROP. */ | |
c2f5bfd6 KH |
2096 | |
2097 | static unsigned | |
9331887d KH |
2098 | font_score (entity, spec_prop) |
2099 | Lisp_Object entity, *spec_prop; | |
c2f5bfd6 KH |
2100 | { |
2101 | unsigned score = 0; | |
2102 | int i; | |
9331887d | 2103 | /* Score four atomic fields. Maximum difference is 1. */ |
c2f5bfd6 | 2104 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_REGISTRY_INDEX; i++) |
9331887d KH |
2105 | if (! NILP (spec_prop[i]) |
2106 | && ! EQ (spec_prop[i], AREF (entity, i))) | |
2107 | score |= 1 << sort_shift_bits[i]; | |
c2f5bfd6 | 2108 | |
9331887d | 2109 | /* Score four numeric fields. Maximum difference is 127. */ |
c2f5bfd6 KH |
2110 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
2111 | { | |
c2f5bfd6 KH |
2112 | Lisp_Object entity_val = AREF (entity, i); |
2113 | ||
9331887d | 2114 | if (! NILP (spec_prop[i]) && ! EQ (spec_prop[i], entity_val)) |
c2f5bfd6 KH |
2115 | { |
2116 | if (! INTEGERP (entity_val)) | |
2117 | score |= 127 << sort_shift_bits[i]; | |
9331887d | 2118 | else |
c2f5bfd6 | 2119 | { |
9331887d | 2120 | int diff = XINT (entity_val) - XINT (spec_prop[i]); |
c2f5bfd6 KH |
2121 | |
2122 | if (diff < 0) | |
2123 | diff = - diff; | |
9331887d KH |
2124 | if (i == FONT_SIZE_INDEX) |
2125 | { | |
2126 | if (XINT (entity_val) > 0 | |
2127 | && diff > FONT_PIXEL_SIZE_QUANTUM) | |
2128 | score |= min (diff, 127) << sort_shift_bits[i]; | |
2129 | } | |
2130 | else | |
2131 | score |= min (diff, 127) << sort_shift_bits[i]; | |
c2f5bfd6 KH |
2132 | } |
2133 | } | |
2134 | } | |
2135 | ||
2136 | return score; | |
2137 | } | |
2138 | ||
2139 | ||
2140 | /* The comparison function for qsort. */ | |
2141 | ||
2142 | static int | |
2143 | font_compare (d1, d2) | |
2144 | const void *d1, *d2; | |
2145 | { | |
2146 | return (*(unsigned *) d1 < *(unsigned *) d2 | |
2147 | ? -1 : *(unsigned *) d1 > *(unsigned *) d2); | |
2148 | } | |
2149 | ||
2150 | ||
2151 | /* The structure for elements being sorted by qsort. */ | |
2152 | struct font_sort_data | |
2153 | { | |
2154 | unsigned score; | |
2155 | Lisp_Object entity; | |
2156 | }; | |
2157 | ||
2158 | ||
2159 | /* Sort font-entities in vector VEC by closeness to font-spec PREFER. | |
2160 | If PREFER specifies a point-size, calculate the corresponding | |
9331887d KH |
2161 | pixel-size from QCdpi property of PREFER or from the Y-resolution |
2162 | of FRAME before sorting. If SPEC is not nil, it is a font-spec to | |
2163 | get the font-entities in VEC. */ | |
c2f5bfd6 KH |
2164 | |
2165 | static Lisp_Object | |
2166 | font_sort_entites (vec, prefer, frame, spec) | |
2167 | Lisp_Object vec, prefer, frame, spec; | |
2168 | { | |
9331887d | 2169 | Lisp_Object prefer_prop[FONT_SPEC_MAX]; |
c2f5bfd6 KH |
2170 | int len, i; |
2171 | struct font_sort_data *data; | |
c2f5bfd6 KH |
2172 | USE_SAFE_ALLOCA; |
2173 | ||
2174 | len = ASIZE (vec); | |
2175 | if (len <= 1) | |
2176 | return vec; | |
2177 | ||
9331887d KH |
2178 | for (i = FONT_FOUNDRY_INDEX; i <= FONT_SIZE_INDEX; i++) |
2179 | prefer_prop[i] = AREF (prefer, i); | |
c2f5bfd6 KH |
2180 | |
2181 | if (! NILP (spec)) | |
2182 | { | |
2183 | /* As it is assured that all fonts in VEC match with SPEC, we | |
2184 | should ignore properties specified in SPEC. So, set the | |
9331887d | 2185 | corresponding properties in PREFER_PROP to nil. */ |
c2f5bfd6 | 2186 | for (i = FONT_WEIGHT_INDEX; i <= FONT_SIZE_INDEX; i++) |
9331887d KH |
2187 | if (! NILP (AREF (spec, i))) |
2188 | prefer_prop[i++] = Qnil; | |
c2f5bfd6 KH |
2189 | } |
2190 | ||
9331887d KH |
2191 | if (FLOATP (prefer_prop[FONT_SIZE_INDEX])) |
2192 | prefer_prop[FONT_SIZE_INDEX] | |
2193 | = make_number (font_pixel_size (XFRAME (frame), prefer)); | |
2194 | ||
c2f5bfd6 KH |
2195 | /* Scoring and sorting. */ |
2196 | SAFE_ALLOCA (data, struct font_sort_data *, (sizeof *data) * len); | |
2197 | for (i = 0; i < len; i++) | |
2198 | { | |
2199 | data[i].entity = AREF (vec, i); | |
9331887d | 2200 | data[i].score = font_score (data[i].entity, prefer_prop); |
c2f5bfd6 KH |
2201 | } |
2202 | qsort (data, len, sizeof *data, font_compare); | |
2203 | for (i = 0; i < len; i++) | |
2204 | ASET (vec, i, data[i].entity); | |
2205 | SAFE_FREE (); | |
2206 | ||
2207 | return vec; | |
2208 | } | |
2209 | ||
2210 | \f | |
2211 | /* API of Font Service Layer. */ | |
2212 | ||
2213 | void | |
2214 | font_update_sort_order (order) | |
2215 | int *order; | |
2216 | { | |
2217 | int i, shift_bits = 21; | |
2218 | ||
2219 | for (i = 0; i < 4; i++, shift_bits -= 7) | |
2220 | { | |
2221 | int xlfd_idx = order[i]; | |
2222 | ||
2223 | if (xlfd_idx == XLFD_WEIGHT_INDEX) | |
2224 | sort_shift_bits[FONT_WEIGHT_INDEX] = shift_bits; | |
2225 | else if (xlfd_idx == XLFD_SLANT_INDEX) | |
2226 | sort_shift_bits[FONT_SLANT_INDEX] = shift_bits; | |
2227 | else if (xlfd_idx == XLFD_SWIDTH_INDEX) | |
2228 | sort_shift_bits[FONT_WIDTH_INDEX] = shift_bits; | |
2229 | else | |
2230 | sort_shift_bits[FONT_SIZE_INDEX] = shift_bits; | |
2231 | } | |
2232 | } | |
2233 | ||
2234 | Lisp_Object | |
2235 | font_symbolic_weight (font) | |
2236 | Lisp_Object font; | |
2237 | { | |
2238 | Lisp_Object weight = AREF (font, FONT_WEIGHT_INDEX); | |
2239 | ||
2240 | if (INTEGERP (weight)) | |
2241 | weight = prop_numeric_to_name (FONT_WEIGHT_INDEX, XINT (weight)); | |
2242 | return weight; | |
2243 | } | |
2244 | ||
2245 | Lisp_Object | |
2246 | font_symbolic_slant (font) | |
2247 | Lisp_Object font; | |
2248 | { | |
2249 | Lisp_Object slant = AREF (font, FONT_SLANT_INDEX); | |
2250 | ||
2251 | if (INTEGERP (slant)) | |
2252 | slant = prop_numeric_to_name (FONT_SLANT_INDEX, XINT (slant)); | |
2253 | return slant; | |
2254 | } | |
2255 | ||
2256 | Lisp_Object | |
2257 | font_symbolic_width (font) | |
2258 | Lisp_Object font; | |
2259 | { | |
2260 | Lisp_Object width = AREF (font, FONT_WIDTH_INDEX); | |
2261 | ||
2262 | if (INTEGERP (width)) | |
2263 | width = prop_numeric_to_name (FONT_WIDTH_INDEX, XINT (width)); | |
2264 | return width; | |
2265 | } | |
2266 | ||
ef18374f KH |
2267 | int |
2268 | font_match_p (spec, entity) | |
2269 | Lisp_Object spec, entity; | |
2270 | { | |
2271 | int i; | |
2272 | ||
2273 | for (i = FONT_FOUNDRY_INDEX; i < FONT_SIZE_INDEX; i++) | |
2274 | if (! NILP (AREF (spec, i)) | |
2275 | && ! EQ (AREF (spec, i), AREF (entity, i))) | |
2276 | return 0; | |
2277 | if (INTEGERP (AREF (spec, FONT_SIZE_INDEX)) | |
2278 | && XINT (AREF (entity, FONT_SIZE_INDEX)) > 0 | |
2279 | && (XINT (AREF (spec, FONT_SIZE_INDEX)) | |
2280 | != XINT (AREF (entity, FONT_SIZE_INDEX)))) | |
2281 | return 0; | |
2282 | return 1; | |
2283 | } | |
2284 | ||
c2f5bfd6 KH |
2285 | Lisp_Object |
2286 | font_find_object (font) | |
2287 | struct font *font; | |
2288 | { | |
2289 | Lisp_Object tail, elt; | |
2290 | ||
2291 | for (tail = AREF (font->entity, FONT_OBJLIST_INDEX); CONSP (tail); | |
2292 | tail = XCDR (tail)) | |
2293 | { | |
2294 | elt = XCAR (tail); | |
2295 | if (font == XSAVE_VALUE (elt)->pointer | |
2296 | && XSAVE_VALUE (elt)->integer > 0) | |
2297 | return elt; | |
2298 | } | |
2299 | abort (); | |
2300 | return Qnil; | |
2301 | } | |
2302 | ||
2303 | static Lisp_Object scratch_font_spec, scratch_font_prefer; | |
2304 | ||
2305 | /* Return a vector of font-entities matching with SPEC on frame F. */ | |
2306 | ||
2307 | static Lisp_Object | |
2308 | font_list_entities (frame, spec) | |
2309 | Lisp_Object frame, spec; | |
2310 | { | |
2311 | FRAME_PTR f = XFRAME (frame); | |
2312 | struct font_driver_list *driver_list = f->font_driver_list; | |
a9262bb8 | 2313 | Lisp_Object ftype, family, size, alternate_familes; |
c2f5bfd6 KH |
2314 | Lisp_Object *vec = alloca (sizeof (Lisp_Object) * num_font_drivers); |
2315 | int i; | |
2316 | ||
2317 | if (! vec) | |
2318 | return null_vector; | |
2319 | ||
2320 | family = AREF (spec, FONT_FAMILY_INDEX); | |
2321 | if (NILP (family)) | |
2322 | alternate_familes = Qnil; | |
2323 | else | |
2324 | { | |
2325 | if (NILP (font_family_alist) | |
2326 | && !NILP (Vface_alternative_font_family_alist)) | |
2327 | build_font_family_alist (); | |
2328 | alternate_familes = assq_no_quit (family, font_family_alist); | |
2329 | if (! NILP (alternate_familes)) | |
2330 | alternate_familes = XCDR (alternate_familes); | |
2331 | } | |
a9262bb8 KH |
2332 | size = AREF (spec, FONT_SIZE_INDEX); |
2333 | if (FLOATP (size)) | |
9331887d | 2334 | ASET (spec, FONT_SIZE_INDEX, make_number (font_pixel_size (f, spec))); |
a9262bb8 | 2335 | |
c2f5bfd6 KH |
2336 | xassert (ASIZE (spec) == FONT_SPEC_MAX); |
2337 | ftype = AREF (spec, FONT_TYPE_INDEX); | |
2338 | ||
2339 | for (i = 0; driver_list; driver_list = driver_list->next) | |
417a1b10 KH |
2340 | if (driver_list->on |
2341 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) | |
c2f5bfd6 KH |
2342 | { |
2343 | Lisp_Object cache = driver_list->driver->get_cache (frame); | |
2344 | Lisp_Object tail = alternate_familes; | |
2345 | Lisp_Object val; | |
2346 | ||
2347 | xassert (CONSP (cache)); | |
2348 | ASET (spec, FONT_TYPE_INDEX, driver_list->driver->type); | |
2349 | ASET (spec, FONT_FAMILY_INDEX, family); | |
2350 | ||
2351 | while (1) | |
2352 | { | |
2353 | val = assoc_no_quit (spec, XCDR (cache)); | |
2354 | if (CONSP (val)) | |
2355 | val = XCDR (val); | |
2356 | else | |
2357 | { | |
2358 | val = driver_list->driver->list (frame, spec); | |
2359 | if (VECTORP (val)) | |
2360 | XSETCDR (cache, Fcons (Fcons (Fcopy_sequence (spec), val), | |
2361 | XCDR (cache))); | |
2362 | } | |
2363 | if (VECTORP (val) && ASIZE (val) > 0) | |
2364 | { | |
2365 | vec[i++] = val; | |
2366 | break; | |
2367 | } | |
2368 | if (NILP (tail)) | |
2369 | break; | |
2370 | ASET (spec, FONT_FAMILY_INDEX, XCAR (tail)); | |
2371 | tail = XCDR (tail); | |
2372 | } | |
2373 | } | |
2374 | ASET (spec, FONT_TYPE_INDEX, ftype); | |
2375 | ASET (spec, FONT_FAMILY_INDEX, family); | |
a9262bb8 | 2376 | ASET (spec, FONT_SIZE_INDEX, size); |
c2f5bfd6 KH |
2377 | return (i > 0 ? Fvconcat (i, vec) : null_vector); |
2378 | } | |
2379 | ||
e950d6f1 KH |
2380 | static Lisp_Object |
2381 | font_matching_entity (frame, spec) | |
2382 | Lisp_Object frame, spec; | |
2383 | { | |
2384 | FRAME_PTR f = XFRAME (frame); | |
2385 | struct font_driver_list *driver_list = f->font_driver_list; | |
2386 | Lisp_Object ftype, size, entity; | |
2387 | ||
2388 | ftype = AREF (spec, FONT_TYPE_INDEX); | |
2389 | size = AREF (spec, FONT_SIZE_INDEX); | |
2390 | if (FLOATP (size)) | |
2391 | ASET (spec, FONT_SIZE_INDEX, make_number (font_pixel_size (f, spec))); | |
2392 | entity = Qnil; | |
2393 | for (; driver_list; driver_list = driver_list->next) | |
2394 | if (driver_list->on | |
2395 | && (NILP (ftype) || EQ (driver_list->driver->type, ftype))) | |
2396 | { | |
2397 | Lisp_Object cache = driver_list->driver->get_cache (frame); | |
7c8f6ffd | 2398 | Lisp_Object key; |
e950d6f1 KH |
2399 | |
2400 | xassert (CONSP (cache)); | |
2401 | ASET (spec, FONT_TYPE_INDEX, driver_list->driver->type); | |
2402 | key = Fcons (spec, Qnil); | |
2403 | entity = assoc_no_quit (key, XCDR (cache)); | |
2404 | if (CONSP (entity)) | |
2405 | entity = XCDR (entity); | |
2406 | else | |
2407 | { | |
2408 | entity = driver_list->driver->match (frame, spec); | |
2409 | if (! NILP (entity)) | |
2410 | { | |
2411 | XSETCAR (key, Fcopy_sequence (spec)); | |
2412 | XSETCDR (cache, Fcons (Fcons (key, entity), XCDR (cache))); | |
2413 | } | |
2414 | } | |
2415 | if (! NILP (entity)) | |
2416 | break; | |
2417 | } | |
2418 | ASET (spec, FONT_TYPE_INDEX, ftype); | |
2419 | ASET (spec, FONT_SIZE_INDEX, size); | |
2420 | return entity; | |
2421 | } | |
2422 | ||
c2f5bfd6 KH |
2423 | static int num_fonts; |
2424 | ||
2425 | static Lisp_Object | |
2426 | font_open_entity (f, entity, pixel_size) | |
2427 | FRAME_PTR f; | |
2428 | Lisp_Object entity; | |
2429 | int pixel_size; | |
2430 | { | |
2431 | struct font_driver_list *driver_list; | |
2432 | Lisp_Object objlist, size, val; | |
2433 | struct font *font; | |
2434 | ||
2435 | size = AREF (entity, FONT_SIZE_INDEX); | |
2436 | xassert (NATNUMP (size)); | |
2437 | if (XINT (size) != 0) | |
2438 | pixel_size = XINT (size); | |
2439 | ||
2440 | for (objlist = AREF (entity, FONT_OBJLIST_INDEX); CONSP (objlist); | |
2441 | objlist = XCDR (objlist)) | |
2442 | { | |
2443 | font = XSAVE_VALUE (XCAR (objlist))->pointer; | |
2444 | if (font->pixel_size == pixel_size) | |
2445 | { | |
2446 | XSAVE_VALUE (XCAR (objlist))->integer++; | |
2447 | return XCAR (objlist); | |
2448 | } | |
2449 | } | |
2450 | ||
2451 | xassert (FONT_ENTITY_P (entity)); | |
2452 | val = AREF (entity, FONT_TYPE_INDEX); | |
2453 | for (driver_list = f->font_driver_list; | |
2454 | driver_list && ! EQ (driver_list->driver->type, val); | |
2455 | driver_list = driver_list->next); | |
2456 | if (! driver_list) | |
2457 | return Qnil; | |
2458 | ||
2459 | font = driver_list->driver->open (f, entity, pixel_size); | |
2460 | if (! font) | |
2461 | return Qnil; | |
e80e09b4 KH |
2462 | font->scalable = XINT (size) == 0; |
2463 | ||
c2f5bfd6 KH |
2464 | val = make_save_value (font, 1); |
2465 | ASET (entity, FONT_OBJLIST_INDEX, | |
2466 | Fcons (val, AREF (entity, FONT_OBJLIST_INDEX))); | |
2467 | num_fonts++; | |
2468 | return val; | |
2469 | } | |
2470 | ||
2471 | void | |
2472 | font_close_object (f, font_object) | |
2473 | FRAME_PTR f; | |
2474 | Lisp_Object font_object; | |
2475 | { | |
10d16101 KH |
2476 | struct font *font = XSAVE_VALUE (font_object)->pointer; |
2477 | Lisp_Object objlist; | |
c2f5bfd6 KH |
2478 | Lisp_Object tail, prev = Qnil; |
2479 | ||
10d16101 KH |
2480 | XSAVE_VALUE (font_object)->integer--; |
2481 | xassert (XSAVE_VALUE (font_object)->integer >= 0); | |
2482 | if (XSAVE_VALUE (font_object)->integer > 0) | |
2483 | return; | |
2484 | ||
2485 | objlist = AREF (font->entity, FONT_OBJLIST_INDEX); | |
c2f5bfd6 KH |
2486 | for (prev = Qnil, tail = objlist; CONSP (tail); |
2487 | prev = tail, tail = XCDR (tail)) | |
2488 | if (EQ (font_object, XCAR (tail))) | |
2489 | { | |
10d16101 KH |
2490 | if (font->driver->close) |
2491 | font->driver->close (f, font); | |
2492 | XSAVE_VALUE (font_object)->pointer = NULL; | |
2493 | if (NILP (prev)) | |
2494 | ASET (font->entity, FONT_OBJLIST_INDEX, XCDR (objlist)); | |
2495 | else | |
2496 | XSETCDR (prev, XCDR (objlist)); | |
2497 | return; | |
c2f5bfd6 | 2498 | } |
10d16101 | 2499 | abort (); |
c2f5bfd6 KH |
2500 | } |
2501 | ||
2502 | int | |
1b834a8d | 2503 | font_has_char (f, font, c) |
c2f5bfd6 | 2504 | FRAME_PTR f; |
1b834a8d | 2505 | Lisp_Object font; |
c2f5bfd6 KH |
2506 | int c; |
2507 | { | |
1b834a8d | 2508 | struct font *fontp; |
c2f5bfd6 | 2509 | |
1b834a8d KH |
2510 | if (FONT_ENTITY_P (font)) |
2511 | { | |
2512 | Lisp_Object type = AREF (font, FONT_TYPE_INDEX); | |
2513 | struct font_driver_list *driver_list; | |
2514 | ||
2515 | for (driver_list = f->font_driver_list; | |
2516 | driver_list && ! EQ (driver_list->driver->type, type); | |
2517 | driver_list = driver_list->next); | |
2518 | if (! driver_list) | |
2519 | return 0; | |
2520 | if (! driver_list->driver->has_char) | |
2521 | return -1; | |
2522 | return driver_list->driver->has_char (font, c); | |
2523 | } | |
2524 | ||
2525 | xassert (FONT_OBJECT_P (font)); | |
2526 | fontp = XSAVE_VALUE (font)->pointer; | |
2527 | ||
2528 | if (fontp->driver->has_char) | |
2529 | { | |
2530 | int result = fontp->driver->has_char (fontp->entity, c); | |
2531 | ||
2532 | if (result >= 0) | |
2533 | return result; | |
2534 | } | |
2535 | return (fontp->driver->encode_char (fontp, c) != FONT_INVALID_CODE); | |
c2f5bfd6 KH |
2536 | } |
2537 | ||
2538 | unsigned | |
2539 | font_encode_char (font_object, c) | |
2540 | Lisp_Object font_object; | |
2541 | int c; | |
2542 | { | |
2543 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
2544 | ||
2545 | return font->driver->encode_char (font, c); | |
2546 | } | |
2547 | ||
ef18374f | 2548 | Lisp_Object |
c2f5bfd6 KH |
2549 | font_get_name (font_object) |
2550 | Lisp_Object font_object; | |
2551 | { | |
2552 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
ef18374f KH |
2553 | char *name = (font->font.full_name ? font->font.full_name |
2554 | : font->font.name ? font->font.name | |
2555 | : NULL); | |
c2f5bfd6 | 2556 | |
ef18374f KH |
2557 | return (name ? make_unibyte_string (name, strlen (name)) : null_string); |
2558 | } | |
2559 | ||
2560 | Lisp_Object | |
2561 | font_get_spec (font_object) | |
2562 | Lisp_Object font_object; | |
2563 | { | |
2564 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
2565 | Lisp_Object spec = Ffont_spec (0, NULL); | |
2566 | int i; | |
2567 | ||
2568 | for (i = 0; i < FONT_SIZE_INDEX; i++) | |
2569 | ASET (spec, i, AREF (font->entity, i)); | |
2570 | ASET (spec, FONT_SIZE_INDEX, make_number (font->pixel_size)); | |
2571 | return spec; | |
c2f5bfd6 KH |
2572 | } |
2573 | ||
2574 | Lisp_Object | |
2575 | font_get_frame (font) | |
2576 | Lisp_Object font; | |
2577 | { | |
2578 | if (FONT_OBJECT_P (font)) | |
2579 | font = ((struct font *) XSAVE_VALUE (font)->pointer)->entity; | |
2580 | xassert (FONT_ENTITY_P (font)); | |
2581 | return AREF (font, FONT_FRAME_INDEX); | |
2582 | } | |
2583 | ||
ef18374f KH |
2584 | /* Find a font entity best matching with LFACE. If SPEC is non-nil, |
2585 | the font must exactly match with it. */ | |
c2f5bfd6 KH |
2586 | |
2587 | Lisp_Object | |
2588 | font_find_for_lface (f, lface, spec) | |
2589 | FRAME_PTR f; | |
2590 | Lisp_Object *lface; | |
2591 | Lisp_Object spec; | |
2592 | { | |
ef18374f | 2593 | Lisp_Object frame, entities; |
c2f5bfd6 | 2594 | int i; |
c2f5bfd6 | 2595 | |
fe5ddfbc | 2596 | XSETFRAME (frame, f); |
c2f5bfd6 | 2597 | |
fe5ddfbc | 2598 | if (NILP (spec)) |
1b834a8d | 2599 | { |
fe5ddfbc KH |
2600 | for (i = 0; i < FONT_SPEC_MAX; i++) |
2601 | ASET (scratch_font_spec, i, Qnil); | |
2602 | ASET (scratch_font_spec, FONT_REGISTRY_INDEX, Qiso8859_1); | |
1b834a8d | 2603 | |
fe5ddfbc KH |
2604 | if (! NILP (lface[LFACE_FAMILY_INDEX])) |
2605 | font_merge_old_spec (Qnil, lface[LFACE_FAMILY_INDEX], Qnil, | |
2606 | scratch_font_spec); | |
2607 | entities = font_list_entities (frame, scratch_font_spec); | |
2608 | while (ASIZE (entities) == 0) | |
c2f5bfd6 | 2609 | { |
fe5ddfbc KH |
2610 | /* Try without FOUNDRY or FAMILY. */ |
2611 | if (! NILP (AREF (scratch_font_spec, FONT_FOUNDRY_INDEX))) | |
2612 | { | |
2613 | ASET (scratch_font_spec, FONT_FOUNDRY_INDEX, Qnil); | |
2614 | entities = font_list_entities (frame, scratch_font_spec); | |
2615 | } | |
2616 | else if (! NILP (AREF (scratch_font_spec, FONT_FAMILY_INDEX))) | |
2617 | { | |
2618 | ASET (scratch_font_spec, FONT_FAMILY_INDEX, Qnil); | |
2619 | entities = font_list_entities (frame, scratch_font_spec); | |
2620 | } | |
2621 | else | |
2622 | break; | |
c2f5bfd6 | 2623 | } |
fe5ddfbc KH |
2624 | } |
2625 | else | |
2626 | { | |
2627 | for (i = 0; i < FONT_SPEC_MAX; i++) | |
2628 | ASET (scratch_font_spec, i, AREF (spec, i)); | |
2629 | if (NILP (AREF (spec, FONT_REGISTRY_INDEX))) | |
2630 | ASET (scratch_font_spec, FONT_REGISTRY_INDEX, Qiso8859_1); | |
2631 | entities = font_list_entities (frame, scratch_font_spec); | |
c2f5bfd6 KH |
2632 | } |
2633 | ||
fe5ddfbc KH |
2634 | if (ASIZE (entities) == 0) |
2635 | return Qnil; | |
c2f5bfd6 KH |
2636 | if (ASIZE (entities) > 1) |
2637 | { | |
fe5ddfbc | 2638 | /* Sort fonts by properties specified in LFACE. */ |
ec6fe57c | 2639 | Lisp_Object prefer = scratch_font_prefer; |
9331887d | 2640 | double pt; |
ef18374f | 2641 | |
fe5ddfbc KH |
2642 | if (! NILP (lface[LFACE_FAMILY_INDEX])) |
2643 | font_merge_old_spec (Qnil, lface[LFACE_FAMILY_INDEX], Qnil, prefer); | |
ef18374f | 2644 | ASET (prefer, FONT_WEIGHT_INDEX, |
ec6fe57c | 2645 | font_prop_validate_style (FONT_WEIGHT_INDEX, QCweight, |
ef18374f KH |
2646 | lface[LFACE_WEIGHT_INDEX])); |
2647 | ASET (prefer, FONT_SLANT_INDEX, | |
ec6fe57c | 2648 | font_prop_validate_style (FONT_SLANT_INDEX, QCslant, |
ef18374f KH |
2649 | lface[LFACE_SLANT_INDEX])); |
2650 | ASET (prefer, FONT_WIDTH_INDEX, | |
ec6fe57c | 2651 | font_prop_validate_style (FONT_WIDTH_INDEX, QCwidth, |
ef18374f | 2652 | lface[LFACE_SWIDTH_INDEX])); |
9331887d KH |
2653 | pt = XINT (lface[LFACE_HEIGHT_INDEX]); |
2654 | ASET (prefer, FONT_SIZE_INDEX, make_float (pt / 10)); | |
c2f5bfd6 | 2655 | |
c2f5bfd6 KH |
2656 | font_sort_entites (entities, prefer, frame, spec); |
2657 | } | |
2658 | ||
2659 | return AREF (entities, 0); | |
2660 | } | |
2661 | ||
2662 | Lisp_Object | |
2663 | font_open_for_lface (f, lface, entity) | |
2664 | FRAME_PTR f; | |
2665 | Lisp_Object *lface; | |
2666 | Lisp_Object entity; | |
2667 | { | |
9331887d KH |
2668 | double pt = XINT (lface[LFACE_HEIGHT_INDEX]); |
2669 | int size; | |
c2f5bfd6 | 2670 | |
9331887d KH |
2671 | pt /= 10; |
2672 | size = POINT_TO_PIXEL (pt, f->resy); | |
c2f5bfd6 KH |
2673 | return font_open_entity (f, entity, size); |
2674 | } | |
2675 | ||
2676 | void | |
2677 | font_load_for_face (f, face) | |
2678 | FRAME_PTR f; | |
2679 | struct face *face; | |
2680 | { | |
ef18374f | 2681 | Lisp_Object font_object = face->lface[LFACE_FONT_INDEX]; |
c2f5bfd6 | 2682 | |
ef18374f | 2683 | if (NILP (font_object)) |
c2f5bfd6 | 2684 | { |
ef18374f | 2685 | Lisp_Object entity = font_find_for_lface (f, face->lface, Qnil); |
c2f5bfd6 | 2686 | |
ef18374f KH |
2687 | if (! NILP (entity)) |
2688 | font_object = font_open_for_lface (f, face->lface, entity); | |
2689 | } | |
c2f5bfd6 | 2690 | |
ef18374f KH |
2691 | if (! NILP (font_object)) |
2692 | { | |
2693 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
2694 | ||
2695 | face->font = font->font.font; | |
2696 | face->font_info = (struct font_info *) font; | |
2697 | face->font_info_id = 0; | |
2698 | face->font_name = font->font.full_name; | |
2699 | } | |
2700 | else | |
2701 | { | |
2702 | face->font = NULL; | |
2703 | face->font_info = NULL; | |
2704 | face->font_info_id = -1; | |
2705 | face->font_name = NULL; | |
2706 | add_to_log ("Unable to load font for a face%s", null_string, Qnil); | |
c2f5bfd6 | 2707 | } |
c2f5bfd6 KH |
2708 | } |
2709 | ||
2710 | void | |
2711 | font_prepare_for_face (f, face) | |
2712 | FRAME_PTR f; | |
2713 | struct face *face; | |
2714 | { | |
2715 | struct font *font = (struct font *) face->font_info; | |
2716 | ||
2717 | if (font->driver->prepare_face) | |
2718 | font->driver->prepare_face (f, face); | |
2719 | } | |
2720 | ||
2721 | void | |
2722 | font_done_for_face (f, face) | |
2723 | FRAME_PTR f; | |
2724 | struct face *face; | |
2725 | { | |
2726 | struct font *font = (struct font *) face->font_info; | |
2727 | ||
2728 | if (font->driver->done_face) | |
2729 | font->driver->done_face (f, face); | |
2730 | face->extra = NULL; | |
2731 | } | |
2732 | ||
2733 | Lisp_Object | |
2734 | font_open_by_name (f, name) | |
2735 | FRAME_PTR f; | |
2736 | char *name; | |
2737 | { | |
ef18374f | 2738 | Lisp_Object args[2]; |
e950d6f1 | 2739 | Lisp_Object spec, prefer, size, entity, entity_list; |
c2f5bfd6 | 2740 | Lisp_Object frame; |
a9262bb8 | 2741 | int i; |
ef18374f | 2742 | int pixel_size; |
c2f5bfd6 KH |
2743 | |
2744 | XSETFRAME (frame, f); | |
a9262bb8 | 2745 | |
ef18374f KH |
2746 | args[0] = QCname; |
2747 | args[1] = make_unibyte_string (name, strlen (name)); | |
2748 | spec = Ffont_spec (2, args); | |
a9262bb8 KH |
2749 | prefer = scratch_font_prefer; |
2750 | for (i = FONT_WEIGHT_INDEX; i < FONT_SIZE_INDEX; i++) | |
2751 | if (NILP (AREF (spec, i))) | |
2752 | ASET (prefer, i, make_number (100)); | |
2753 | size = AREF (spec, FONT_SIZE_INDEX); | |
2754 | if (NILP (size)) | |
2755 | pixel_size = 0; | |
2756 | else if (INTEGERP (size)) | |
2757 | pixel_size = XINT (size); | |
2758 | else /* FLOATP (size) */ | |
ef18374f | 2759 | { |
9331887d | 2760 | double pt = XFLOAT_DATA (size); |
a9262bb8 KH |
2761 | |
2762 | pixel_size = POINT_TO_PIXEL (pt, f->resy); | |
2763 | size = make_number (pixel_size); | |
2764 | ASET (spec, FONT_SIZE_INDEX, size); | |
ef18374f | 2765 | } |
a9262bb8 | 2766 | if (pixel_size == 0) |
ef18374f | 2767 | { |
9331887d | 2768 | pixel_size = POINT_TO_PIXEL (12.0, f->resy); |
a9262bb8 | 2769 | size = make_number (pixel_size); |
ef18374f | 2770 | } |
a9262bb8 | 2771 | ASET (prefer, FONT_SIZE_INDEX, size); |
9331887d KH |
2772 | if (NILP (AREF (spec, FONT_REGISTRY_INDEX))) |
2773 | ASET (spec, FONT_REGISTRY_INDEX, Qiso8859_1); | |
a9262bb8 | 2774 | |
e950d6f1 KH |
2775 | entity_list = Flist_fonts (spec, frame, make_number (1), prefer); |
2776 | if (NILP (entity_list)) | |
2777 | entity = font_matching_entity (frame, spec); | |
2778 | else | |
2779 | entity = XCAR (entity_list); | |
2780 | return (NILP (entity) | |
a9262bb8 | 2781 | ? Qnil |
e950d6f1 | 2782 | : font_open_entity (f, entity, pixel_size)); |
c2f5bfd6 KH |
2783 | } |
2784 | ||
2785 | ||
2786 | /* Register font-driver DRIVER. This function is used in two ways. | |
2787 | ||
417a1b10 KH |
2788 | The first is with frame F non-NULL. In this case, make DRIVER |
2789 | available (but not yet activated) on F. All frame creaters | |
2790 | (e.g. Fx_create_frame) must call this function at least once with | |
2791 | an available font-driver. | |
c2f5bfd6 KH |
2792 | |
2793 | The second is with frame F NULL. In this case, DRIVER is globally | |
2794 | registered in the variable `font_driver_list'. All font-driver | |
2795 | implementations must call this function in its syms_of_XXXX | |
2796 | (e.g. syms_of_xfont). */ | |
2797 | ||
2798 | void | |
2799 | register_font_driver (driver, f) | |
2800 | struct font_driver *driver; | |
2801 | FRAME_PTR f; | |
2802 | { | |
2803 | struct font_driver_list *root = f ? f->font_driver_list : font_driver_list; | |
2804 | struct font_driver_list *prev, *list; | |
2805 | ||
2806 | if (f && ! driver->draw) | |
2807 | error ("Unsable font driver for a frame: %s", | |
2808 | SDATA (SYMBOL_NAME (driver->type))); | |
2809 | ||
2810 | for (prev = NULL, list = root; list; prev = list, list = list->next) | |
cf23b845 | 2811 | if (EQ (list->driver->type, driver->type)) |
c2f5bfd6 KH |
2812 | error ("Duplicated font driver: %s", SDATA (SYMBOL_NAME (driver->type))); |
2813 | ||
2814 | list = malloc (sizeof (struct font_driver_list)); | |
417a1b10 | 2815 | list->on = 0; |
c2f5bfd6 KH |
2816 | list->driver = driver; |
2817 | list->next = NULL; | |
2818 | if (prev) | |
2819 | prev->next = list; | |
2820 | else if (f) | |
2821 | f->font_driver_list = list; | |
2822 | else | |
2823 | font_driver_list = list; | |
2824 | num_font_drivers++; | |
2825 | } | |
2826 | ||
2827 | /* Free font-driver list on frame F. It doesn't free font-drivers | |
2828 | themselves. */ | |
2829 | ||
2830 | void | |
2831 | free_font_driver_list (f) | |
2832 | FRAME_PTR f; | |
2833 | { | |
2834 | while (f->font_driver_list) | |
2835 | { | |
2836 | struct font_driver_list *next = f->font_driver_list->next; | |
2837 | ||
2838 | free (f->font_driver_list); | |
2839 | f->font_driver_list = next; | |
2840 | } | |
2841 | } | |
2842 | ||
e950d6f1 KH |
2843 | /* Make the frame F use font backends listed in NEW_BACKENDS (list of |
2844 | symbols). If NEW_BACKENDS is nil, make F use all available font | |
2845 | drivers. If no backend is available, dont't alter | |
2846 | f->font_driver_list. | |
417a1b10 | 2847 | |
e950d6f1 KH |
2848 | A caller must free all realized faces and clear all font caches if |
2849 | any in advance. The return value is a list of font backends | |
2850 | actually made used for on F. */ | |
2851 | ||
2852 | Lisp_Object | |
2853 | font_update_drivers (f, new_drivers) | |
417a1b10 KH |
2854 | FRAME_PTR f; |
2855 | Lisp_Object new_drivers; | |
417a1b10 KH |
2856 | { |
2857 | Lisp_Object active_drivers = Qnil; | |
417a1b10 KH |
2858 | struct font_driver_list *list; |
2859 | ||
e950d6f1 | 2860 | /* At first check which font backends are available. */ |
417a1b10 | 2861 | for (list = f->font_driver_list; list; list = list->next) |
e950d6f1 KH |
2862 | if (NILP (new_drivers) |
2863 | || ! NILP (Fmemq (list->driver->type, new_drivers))) | |
2864 | { | |
2865 | list->on = 2; | |
2866 | active_drivers = nconc2 (active_drivers, | |
2867 | Fcons (list->driver->type, Qnil)); | |
2868 | } | |
2869 | /* If at least one backend is available, update all list->on. */ | |
2870 | if (! NILP (active_drivers)) | |
2871 | for (list = f->font_driver_list; list; list = list->next) | |
2872 | list->on = (list->on == 2); | |
417a1b10 | 2873 | |
e950d6f1 | 2874 | return active_drivers; |
417a1b10 KH |
2875 | } |
2876 | ||
2877 | ||
10d16101 KH |
2878 | Lisp_Object |
2879 | font_at (c, pos, face, w, object) | |
2880 | int c; | |
2881 | EMACS_INT pos; | |
2882 | struct face *face; | |
2883 | struct window *w; | |
2884 | Lisp_Object object; | |
2885 | { | |
2886 | FRAME_PTR f; | |
2887 | int face_id; | |
2888 | int dummy; | |
2889 | ||
2890 | f = XFRAME (w->frame); | |
2891 | if (! face) | |
2892 | { | |
2893 | if (STRINGP (object)) | |
2894 | face_id = face_at_string_position (w, object, pos, 0, -1, -1, &dummy, | |
2895 | DEFAULT_FACE_ID, 0); | |
2896 | else | |
2897 | face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, | |
2898 | pos + 100, 0); | |
2899 | face = FACE_FROM_ID (f, face_id); | |
2900 | } | |
2901 | face_id = FACE_FOR_CHAR (f, face, c, pos, object); | |
2902 | face = FACE_FROM_ID (f, face_id); | |
2903 | if (! face->font_info) | |
2904 | return Qnil; | |
2905 | return font_lispy_object ((struct font *) face->font_info); | |
2906 | } | |
2907 | ||
c2f5bfd6 KH |
2908 | \f |
2909 | /* Lisp API */ | |
2910 | ||
2911 | DEFUN ("fontp", Ffontp, Sfontp, 1, 1, 0, | |
2912 | doc: /* Return t if object is a font-spec or font-entity. */) | |
2913 | (object) | |
2914 | Lisp_Object object; | |
2915 | { | |
2916 | return (FONTP (object) ? Qt : Qnil); | |
2917 | } | |
2918 | ||
2919 | DEFUN ("font-spec", Ffont_spec, Sfont_spec, 0, MANY, 0, | |
2920 | doc: /* Return a newly created font-spec with specified arguments as properties. | |
2921 | usage: (font-spec &rest properties) */) | |
2922 | (nargs, args) | |
2923 | int nargs; | |
2924 | Lisp_Object *args; | |
2925 | { | |
2926 | Lisp_Object spec = Fmake_vector (make_number (FONT_SPEC_MAX), Qnil); | |
c2f5bfd6 KH |
2927 | int i; |
2928 | ||
2929 | for (i = 0; i < nargs; i += 2) | |
2930 | { | |
2931 | enum font_property_index prop; | |
2932 | Lisp_Object key = args[i], val = args[i + 1]; | |
2933 | ||
ec6fe57c | 2934 | prop = get_font_prop_index (key, 0); |
c2f5bfd6 | 2935 | if (prop < FONT_EXTRA_INDEX) |
ec6fe57c | 2936 | ASET (spec, prop, val); |
c2f5bfd6 | 2937 | else |
4485a28e KH |
2938 | { |
2939 | if (EQ (key, QCname)) | |
ec6fe57c KH |
2940 | { |
2941 | CHECK_STRING (val); | |
2942 | font_parse_name ((char *) SDATA (val), spec); | |
2943 | } | |
e950d6f1 | 2944 | font_put_extra (spec, key, val); |
4485a28e | 2945 | } |
e950d6f1 | 2946 | } |
ec6fe57c | 2947 | CHECK_VALIDATE_FONT_SPEC (spec); |
c2f5bfd6 KH |
2948 | return spec; |
2949 | } | |
2950 | ||
2951 | ||
2952 | DEFUN ("font-get", Ffont_get, Sfont_get, 2, 2, 0, | |
2953 | doc: /* Return the value of FONT's PROP property. | |
e950d6f1 | 2954 | FONT is a font-spec, a font-entity, or a font-object. */) |
c2f5bfd6 KH |
2955 | (font, prop) |
2956 | Lisp_Object font, prop; | |
2957 | { | |
2958 | enum font_property_index idx; | |
2959 | ||
10d16101 | 2960 | if (FONT_OBJECT_P (font)) |
e80e09b4 KH |
2961 | { |
2962 | struct font *fontp = XSAVE_VALUE (font)->pointer; | |
2963 | ||
2964 | if (EQ (prop, QCotf)) | |
e950d6f1 KH |
2965 | { |
2966 | #ifdef HAVE_LIBOTF | |
2967 | return font_otf_capability (fontp); | |
2968 | #else /* not HAVE_LIBOTF */ | |
2969 | return Qnil; | |
2970 | #endif /* not HAVE_LIBOTF */ | |
2971 | } | |
e80e09b4 KH |
2972 | font = fontp->entity; |
2973 | } | |
10d16101 KH |
2974 | else |
2975 | CHECK_FONT (font); | |
ec6fe57c | 2976 | idx = get_font_prop_index (prop, 0); |
c2f5bfd6 KH |
2977 | if (idx < FONT_EXTRA_INDEX) |
2978 | return AREF (font, idx); | |
2979 | if (FONT_ENTITY_P (font)) | |
2980 | return Qnil; | |
2981 | return Fcdr (Fassoc (AREF (font, FONT_EXTRA_INDEX), prop)); | |
2982 | } | |
2983 | ||
2984 | ||
2985 | DEFUN ("font-put", Ffont_put, Sfont_put, 3, 3, 0, | |
2986 | doc: /* Set one property of FONT-SPEC: give property PROP value VALUE. */) | |
2987 | (font_spec, prop, val) | |
2988 | Lisp_Object font_spec, prop, val; | |
2989 | { | |
2990 | enum font_property_index idx; | |
2991 | Lisp_Object extra, slot; | |
2992 | ||
2993 | CHECK_FONT_SPEC (font_spec); | |
ec6fe57c | 2994 | idx = get_font_prop_index (prop, 0); |
c2f5bfd6 KH |
2995 | if (idx < FONT_EXTRA_INDEX) |
2996 | return ASET (font_spec, idx, val); | |
2997 | extra = AREF (font_spec, FONT_EXTRA_INDEX); | |
2998 | slot = Fassoc (extra, prop); | |
2999 | if (NILP (slot)) | |
3000 | extra = Fcons (Fcons (prop, val), extra); | |
3001 | else | |
3002 | Fsetcdr (slot, val); | |
3003 | return val; | |
3004 | } | |
3005 | ||
3006 | DEFUN ("list-fonts", Flist_fonts, Slist_fonts, 1, 4, 0, | |
3007 | doc: /* List available fonts matching FONT-SPEC on the current frame. | |
3008 | Optional 2nd argument FRAME specifies the target frame. | |
3009 | Optional 3rd argument NUM, if non-nil, limits the number of returned fonts. | |
ec6fe57c KH |
3010 | Optional 4th argument PREFER, if non-nil, is a font-spec |
3011 | to which closeness fonts are sorted. */) | |
c2f5bfd6 KH |
3012 | (font_spec, frame, num, prefer) |
3013 | Lisp_Object font_spec, frame, num, prefer; | |
3014 | { | |
3015 | Lisp_Object vec, list, tail; | |
3016 | int n = 0, i, len; | |
3017 | ||
3018 | if (NILP (frame)) | |
3019 | frame = selected_frame; | |
3020 | CHECK_LIVE_FRAME (frame); | |
3021 | CHECK_VALIDATE_FONT_SPEC (font_spec); | |
3022 | if (! NILP (num)) | |
3023 | { | |
3024 | CHECK_NUMBER (num); | |
3025 | n = XINT (num); | |
3026 | if (n <= 0) | |
3027 | return Qnil; | |
3028 | } | |
3029 | if (! NILP (prefer)) | |
3030 | CHECK_FONT (prefer); | |
3031 | ||
3032 | vec = font_list_entities (frame, font_spec); | |
3033 | len = ASIZE (vec); | |
3034 | if (len == 0) | |
3035 | return Qnil; | |
3036 | if (len == 1) | |
3037 | return Fcons (AREF (vec, 0), Qnil); | |
3038 | ||
3039 | if (! NILP (prefer)) | |
3040 | vec = font_sort_entites (vec, prefer, frame, font_spec); | |
3041 | ||
3042 | list = tail = Fcons (AREF (vec, 0), Qnil); | |
3043 | if (n == 0 || n > len) | |
3044 | n = len; | |
3045 | for (i = 1; i < n; i++) | |
3046 | { | |
3047 | Lisp_Object val = Fcons (AREF (vec, i), Qnil); | |
3048 | ||
3049 | XSETCDR (tail, val); | |
3050 | tail = val; | |
3051 | } | |
3052 | return list; | |
3053 | } | |
3054 | ||
3055 | DEFUN ("list-families", Flist_families, Slist_families, 0, 1, 0, | |
3056 | doc: /* List available font families on the current frame. | |
3057 | Optional 2nd argument FRAME specifies the target frame. */) | |
3058 | (frame) | |
3059 | Lisp_Object frame; | |
3060 | { | |
3061 | FRAME_PTR f; | |
3062 | struct font_driver_list *driver_list; | |
3063 | Lisp_Object list; | |
3064 | ||
3065 | if (NILP (frame)) | |
3066 | frame = selected_frame; | |
3067 | CHECK_LIVE_FRAME (frame); | |
3068 | f = XFRAME (frame); | |
3069 | list = Qnil; | |
3070 | for (driver_list = f->font_driver_list; driver_list; | |
3071 | driver_list = driver_list->next) | |
3072 | if (driver_list->driver->list_family) | |
3073 | { | |
3074 | Lisp_Object val = driver_list->driver->list_family (frame); | |
3075 | ||
3076 | if (NILP (list)) | |
3077 | list = val; | |
3078 | else | |
3079 | { | |
3080 | Lisp_Object tail = list; | |
3081 | ||
3082 | for (; CONSP (val); val = XCDR (val)) | |
3083 | if (NILP (Fmemq (XCAR (val), tail))) | |
3084 | list = Fcons (XCAR (val), list); | |
3085 | } | |
3086 | } | |
3087 | return list; | |
3088 | } | |
3089 | ||
3090 | DEFUN ("find-font", Ffind_font, Sfind_font, 1, 2, 0, | |
3091 | doc: /* Return a font-entity matching with FONT-SPEC on the current frame. | |
3092 | Optional 2nd argument FRAME, if non-nil, specifies the target frame. */) | |
3093 | (font_spec, frame) | |
3094 | Lisp_Object font_spec, frame; | |
3095 | { | |
3096 | Lisp_Object val = Flist_fonts (font_spec, frame, make_number (1), Qnil); | |
3097 | ||
3098 | if (CONSP (val)) | |
3099 | val = XCAR (val); | |
3100 | return val; | |
3101 | } | |
3102 | ||
3103 | DEFUN ("font-xlfd-name", Ffont_xlfd_name, Sfont_xlfd_name, 1, 1, 0, | |
3104 | doc: /* Return XLFD name of FONT. | |
3105 | FONT is a font-spec, font-entity, or font-object. | |
3106 | If the name is too long for XLFD (maximum 255 chars), return nil. */) | |
3107 | (font) | |
3108 | Lisp_Object font; | |
3109 | { | |
3110 | char name[256]; | |
3111 | int pixel_size = 0; | |
3112 | ||
3113 | if (FONT_SPEC_P (font)) | |
3114 | CHECK_VALIDATE_FONT_SPEC (font); | |
3115 | else if (FONT_ENTITY_P (font)) | |
3116 | CHECK_FONT (font); | |
3117 | else | |
3118 | { | |
3119 | struct font *fontp; | |
3120 | ||
3121 | CHECK_FONT_GET_OBJECT (font, fontp); | |
3122 | font = fontp->entity; | |
3123 | pixel_size = fontp->pixel_size; | |
3124 | } | |
3125 | ||
3126 | if (font_unparse_xlfd (font, pixel_size, name, 256) < 0) | |
3127 | return Qnil; | |
3128 | return build_string (name); | |
3129 | } | |
3130 | ||
3131 | DEFUN ("clear-font-cache", Fclear_font_cache, Sclear_font_cache, 0, 0, 0, | |
3132 | doc: /* Clear font cache. */) | |
3133 | () | |
3134 | { | |
3135 | Lisp_Object list, frame; | |
3136 | ||
3137 | FOR_EACH_FRAME (list, frame) | |
3138 | { | |
3139 | FRAME_PTR f = XFRAME (frame); | |
3140 | struct font_driver_list *driver_list = f->font_driver_list; | |
3141 | ||
3142 | for (; driver_list; driver_list = driver_list->next) | |
417a1b10 KH |
3143 | if (driver_list->on) |
3144 | { | |
3145 | Lisp_Object cache = driver_list->driver->get_cache (frame); | |
3146 | Lisp_Object tail, elt; | |
c2f5bfd6 | 3147 | |
417a1b10 KH |
3148 | for (tail = XCDR (cache); CONSP (tail); tail = XCDR (tail)) |
3149 | { | |
3150 | elt = XCAR (tail); | |
3151 | if (CONSP (elt) && FONT_SPEC_P (XCAR (elt))) | |
3152 | { | |
3153 | Lisp_Object vec = XCDR (elt); | |
3154 | int i; | |
3155 | ||
3156 | for (i = 0; i < ASIZE (vec); i++) | |
3157 | { | |
3158 | Lisp_Object entity = AREF (vec, i); | |
3159 | ||
3160 | if (EQ (driver_list->driver->type, | |
3161 | AREF (entity, FONT_TYPE_INDEX))) | |
3162 | { | |
3163 | Lisp_Object objlist | |
3164 | = AREF (entity, FONT_OBJLIST_INDEX); | |
3165 | ||
3166 | for (; CONSP (objlist); objlist = XCDR (objlist)) | |
3167 | { | |
3168 | Lisp_Object val = XCAR (objlist); | |
3169 | struct Lisp_Save_Value *p = XSAVE_VALUE (val); | |
3170 | struct font *font = p->pointer; | |
3171 | ||
3172 | xassert (font && (driver_list->driver | |
3173 | == font->driver)); | |
3174 | driver_list->driver->close (f, font); | |
3175 | p->pointer = NULL; | |
3176 | p->integer = 0; | |
3177 | } | |
3178 | if (driver_list->driver->free_entity) | |
3179 | driver_list->driver->free_entity (entity); | |
3180 | } | |
3181 | } | |
3182 | } | |
3183 | } | |
3184 | XSETCDR (cache, Qnil); | |
3185 | } | |
c2f5bfd6 KH |
3186 | } |
3187 | ||
3188 | return Qnil; | |
3189 | } | |
3190 | ||
3191 | DEFUN ("internal-set-font-style-table", Finternal_set_font_style_table, | |
3192 | Sinternal_set_font_style_table, 2, 2, 0, | |
3193 | doc: /* Set font style table for PROP to TABLE. | |
3194 | PROP must be `:weight', `:slant', or `:width'. | |
3195 | TABLE must be an alist of symbols vs the corresponding numeric values | |
3196 | sorted by numeric values. */) | |
3197 | (prop, table) | |
3198 | Lisp_Object prop, table; | |
3199 | { | |
3200 | int table_index; | |
3201 | int numeric; | |
3202 | Lisp_Object tail, val; | |
3203 | ||
3204 | CHECK_SYMBOL (prop); | |
3205 | table_index = (EQ (prop, QCweight) ? 0 | |
3206 | : EQ (prop, QCslant) ? 1 | |
3207 | : EQ (prop, QCwidth) ? 2 | |
3208 | : 3); | |
3209 | if (table_index >= ASIZE (font_style_table)) | |
3210 | error ("Invalid font style property: %s", SDATA (SYMBOL_NAME (prop))); | |
3211 | table = Fcopy_sequence (table); | |
3212 | numeric = -1; | |
3213 | for (tail = table; ! NILP (tail); tail = Fcdr (tail)) | |
3214 | { | |
3215 | prop = Fcar (Fcar (tail)); | |
3216 | val = Fcdr (Fcar (tail)); | |
3217 | CHECK_SYMBOL (prop); | |
3218 | CHECK_NATNUM (val); | |
3219 | if (numeric > XINT (val)) | |
3220 | error ("Numeric values not sorted for %s", SDATA (SYMBOL_NAME (prop))); | |
3221 | numeric = XINT (val); | |
3222 | XSETCAR (tail, Fcons (prop, val)); | |
3223 | } | |
3224 | ASET (font_style_table, table_index, table); | |
3225 | return Qnil; | |
3226 | } | |
3227 | ||
3228 | DEFUN ("font-make-gstring", Ffont_make_gstring, Sfont_make_gstring, 2, 2, 0, | |
e80e09b4 KH |
3229 | doc: /* Return a newly created g-string for FONT-OBJECT with NUM glyphs. |
3230 | FONT-OBJECT may be nil if it is not yet known. | |
3231 | ||
3232 | G-string is sequence of glyphs of a specific font, | |
3233 | and is a vector of this form: | |
3234 | [ HEADER GLYPH ... ] | |
3235 | HEADER is a vector of this form: | |
3236 | [FONT-OBJECT LBEARING RBEARING WIDTH ASCENT DESCENT] | |
3237 | where | |
3238 | FONT-OBJECT is a font-object for all glyphs in the G-string, | |
3239 | LBEARING thry DESCENT is the metrics (in pixels) of the whole G-string. | |
3240 | GLYPH is a vector of this form: | |
3241 | [ FROM-IDX TO-IDX C CODE WIDTH [ [X-OFF Y-OFF WADJUST] | nil] ] | |
3242 | where | |
3243 | FROM-IDX and TO-IDX are used internally and should not be touched. | |
3244 | C is the character of the glyph. | |
3245 | CODE is the glyph-code of C in FONT-OBJECT. | |
3246 | X-OFF and Y-OFF are offests to the base position for the glyph. | |
3247 | WIDTH is the normal width of the glyph. | |
3248 | WADJUST is the adjustment to the normal width of the glyph. */) | |
c2f5bfd6 KH |
3249 | (font_object, num) |
3250 | Lisp_Object font_object, num; | |
3251 | { | |
3252 | Lisp_Object gstring, g; | |
3253 | int len; | |
3254 | int i; | |
3255 | ||
3256 | if (! NILP (font_object)) | |
3257 | CHECK_FONT_OBJECT (font_object); | |
3258 | CHECK_NATNUM (num); | |
3259 | ||
3260 | len = XINT (num) + 1; | |
3261 | gstring = Fmake_vector (make_number (len), Qnil); | |
3262 | g = Fmake_vector (make_number (6), Qnil); | |
3263 | ASET (g, 0, font_object); | |
3264 | ASET (gstring, 0, g); | |
3265 | for (i = 1; i < len; i++) | |
10d16101 | 3266 | ASET (gstring, i, Fmake_vector (make_number (8), Qnil)); |
c2f5bfd6 KH |
3267 | return gstring; |
3268 | } | |
3269 | ||
3270 | DEFUN ("font-fill-gstring", Ffont_fill_gstring, Sfont_fill_gstring, 4, 5, 0, | |
3271 | doc: /* Fillin glyph-string GSTRING by characters for FONT-OBJECT. | |
3272 | START and END specifies the region to extract characters. | |
3273 | If optional 3rd argument OBJECT is non-nil, it is a buffer or a string from | |
3274 | where to extract characters. | |
3275 | FONT-OBJECT may be nil if GSTRING already already contains one. */) | |
3276 | (gstring, font_object, start, end, object) | |
3277 | Lisp_Object gstring, font_object, start, end, object; | |
3278 | { | |
3279 | int len, i, c; | |
3280 | unsigned code; | |
3281 | struct font *font; | |
3282 | ||
3283 | CHECK_VECTOR (gstring); | |
3284 | if (NILP (font_object)) | |
10d16101 | 3285 | font_object = LGSTRING_FONT (gstring); |
c2f5bfd6 KH |
3286 | CHECK_FONT_GET_OBJECT (font_object, font); |
3287 | ||
3288 | if (STRINGP (object)) | |
3289 | { | |
3290 | const unsigned char *p; | |
3291 | ||
3292 | CHECK_NATNUM (start); | |
3293 | CHECK_NATNUM (end); | |
3294 | if (XINT (start) > XINT (end) | |
3295 | || XINT (end) > ASIZE (object) | |
10d16101 | 3296 | || XINT (end) - XINT (start) > LGSTRING_LENGTH (gstring)) |
c2f5bfd6 KH |
3297 | args_out_of_range (start, end); |
3298 | ||
3299 | len = XINT (end) - XINT (start); | |
3300 | p = SDATA (object) + string_char_to_byte (object, XINT (start)); | |
3301 | for (i = 0; i < len; i++) | |
3302 | { | |
3303 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
3304 | ||
3305 | c = STRING_CHAR_ADVANCE (p); | |
3306 | code = font->driver->encode_char (font, c); | |
3307 | if (code > MOST_POSITIVE_FIXNUM) | |
3308 | error ("Glyph code 0x%X is too large", code); | |
10d16101 KH |
3309 | LGLYPH_SET_FROM (g, make_number (i)); |
3310 | LGLYPH_SET_TO (g, make_number (i + 1)); | |
c2f5bfd6 KH |
3311 | LGLYPH_SET_CHAR (g, make_number (c)); |
3312 | LGLYPH_SET_CODE (g, make_number (code)); | |
3313 | } | |
3314 | } | |
3315 | else | |
3316 | { | |
3317 | int pos, pos_byte; | |
3318 | ||
3319 | if (! NILP (object)) | |
3320 | Fset_buffer (object); | |
3321 | validate_region (&start, &end); | |
10d16101 | 3322 | if (XINT (end) - XINT (start) > LGSTRING_LENGTH (gstring)) |
c2f5bfd6 KH |
3323 | args_out_of_range (start, end); |
3324 | len = XINT (end) - XINT (start); | |
3325 | pos = XINT (start); | |
3326 | pos_byte = CHAR_TO_BYTE (pos); | |
3327 | for (i = 0; i < len; i++) | |
3328 | { | |
3329 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
3330 | ||
3331 | FETCH_CHAR_ADVANCE (c, pos, pos_byte); | |
3332 | code = font->driver->encode_char (font, c); | |
3333 | if (code > MOST_POSITIVE_FIXNUM) | |
3334 | error ("Glyph code 0x%X is too large", code); | |
10d16101 KH |
3335 | LGLYPH_SET_FROM (g, make_number (i)); |
3336 | LGLYPH_SET_TO (g, make_number (i + 1)); | |
c2f5bfd6 KH |
3337 | LGLYPH_SET_CHAR (g, make_number (c)); |
3338 | LGLYPH_SET_CODE (g, make_number (code)); | |
3339 | } | |
3340 | } | |
10d16101 KH |
3341 | for (i = LGSTRING_LENGTH (gstring) - 1; i >= len; i--) |
3342 | { | |
3343 | Lisp_Object g = LGSTRING_GLYPH (gstring, i); | |
3344 | ||
3345 | LGLYPH_SET_FROM (g, Qnil); | |
3346 | } | |
c2f5bfd6 KH |
3347 | return Qnil; |
3348 | } | |
3349 | ||
e80e09b4 KH |
3350 | DEFUN ("font-otf-gsub", Ffont_otf_gsub, Sfont_otf_gsub, 6, 6, 0, |
3351 | doc: /* Apply OpenType "GSUB" features on glyph-string GSTRING-IN. | |
3352 | FEATURE-SPEC specifies which featuress to apply in this format: | |
3353 | (SCRIPT LANGSYS FEATURE ...) | |
3354 | where | |
3355 | SCRIPT is a symbol specifying a script tag of OpenType, | |
3356 | LANGSYS is a symbol specifying a langsys tag of OpenType, | |
3357 | FEATURE is a symbol specifying a feature tag of Opentype. | |
3358 | ||
3359 | If LANGYS is nil, the default langsys is selected. | |
3360 | ||
3361 | The features are applied in the order appeared in the list. FEATURE | |
3362 | may be a symbol `*', in which case all available features not appeared | |
3363 | in this list are applied, and the remaining FEATUREs are not ignored. | |
3364 | For instance, (mlym nil vatu pstf * haln) means to apply vatu and pstf | |
3365 | in this order, then to apply all available features other than vatu, | |
3366 | pstf, and haln. | |
3367 | ||
3368 | The features are applied to the glyphs in the range FROM and TO of | |
3369 | GSTRING-IN. | |
3370 | ||
3371 | If some of a feature is actually applicable, the resulting glyphs are | |
3372 | produced in the glyph-string GSTRING-OUT from the index INDEX. In | |
3373 | this case, the value is the number of produced glyphs. | |
3374 | ||
3375 | If no feature is applicable, no glyph is produced in GSTRING-OUT, and | |
3376 | the value is 0. | |
3377 | ||
3378 | If GSTRING-OUT is too short to hold produced glyphs, no glyphs is | |
3379 | produced in GSTRING-OUT, and the value is nil. | |
3380 | ||
3381 | See the documentation of `font-make-gstring' for the format of | |
3382 | glyph-string. */) | |
3383 | (feature_spec, gstring_in, from, to, gstring_out, index) | |
3384 | Lisp_Object feature_spec, gstring_in, from, to, gstring_out, index; | |
3385 | { | |
3386 | Lisp_Object font_object = LGSTRING_FONT (gstring_in); | |
3387 | struct font *font = XSAVE_VALUE (font_object)->pointer; | |
3388 | int len, num; | |
3389 | ||
3390 | CHECK_FONT_GET_OBJECT (font_object, font); | |
3391 | if (! font->driver->otf_gsub) | |
3392 | error ("Font backend %s can't drive OpenType GSUB table", | |
3393 | SDATA (SYMBOL_NAME (font->driver->type))); | |
3394 | CHECK_CONS (feature_spec); | |
3395 | len = check_gstring (gstring_in); | |
3396 | CHECK_VECTOR (gstring_out); | |
3397 | CHECK_NATNUM (from); | |
3398 | CHECK_NATNUM (to); | |
3399 | CHECK_NATNUM (index); | |
3400 | ||
3401 | if (XINT (from) >= XINT (to) || XINT (to) > len) | |
3402 | args_out_of_range_3 (from, to, make_number (len)); | |
3403 | if (XINT (index) >= ASIZE (gstring_out)) | |
3404 | args_out_of_range (index, make_number (ASIZE (gstring_out))); | |
e950d6f1 KH |
3405 | num = font->driver->otf_gsub (font, feature_spec, |
3406 | gstring_in, XINT (from), XINT (to), | |
3407 | gstring_out, XINT (index), 0); | |
e80e09b4 KH |
3408 | if (num < 0) |
3409 | return Qnil; | |
3410 | return make_number (num); | |
3411 | } | |
3412 | ||
3413 | ||
3414 | DEFUN ("font-otf-gpos", Ffont_otf_gpos, Sfont_otf_gpos, 4, 4, 0, | |
3415 | doc: /* Apply OpenType "GPOS" features on glyph-string GSTRING. | |
3416 | FEATURE-SPEC specifies which features to apply in this format: | |
3417 | (SCRIPT LANGSYS FEATURE ...) | |
3418 | See the documentation of `font-otf-gsub' for more detail. | |
3419 | ||
3420 | The features are applied to the glyphs in the range FROM and TO of | |
3421 | GSTRING. */) | |
3422 | (gpos_spec, gstring, from, to) | |
3423 | Lisp_Object gpos_spec, gstring, from, to; | |
3424 | { | |
3425 | Lisp_Object font_object = LGSTRING_FONT (gstring); | |
3426 | struct font *font; | |
3427 | int len, num; | |
3428 | ||
3429 | CHECK_FONT_GET_OBJECT (font_object, font); | |
3430 | if (! font->driver->otf_gpos) | |
3431 | error ("Font backend %s can't drive OpenType GPOS table", | |
3432 | SDATA (SYMBOL_NAME (font->driver->type))); | |
3433 | CHECK_CONS (gpos_spec); | |
3434 | len = check_gstring (gstring); | |
3435 | CHECK_NATNUM (from); | |
3436 | CHECK_NATNUM (to); | |
3437 | ||
3438 | if (XINT (from) >= XINT (to) || XINT (to) > len) | |
3439 | args_out_of_range_3 (from, to, make_number (len)); | |
e950d6f1 KH |
3440 | num = font->driver->otf_gpos (font, gpos_spec, |
3441 | gstring, XINT (from), XINT (to)); | |
e80e09b4 KH |
3442 | return (num <= 0 ? Qnil : Qt); |
3443 | } | |
3444 | ||
3445 | ||
3446 | DEFUN ("font-otf-alternates", Ffont_otf_alternates, Sfont_otf_alternates, | |
3447 | 3, 3, 0, | |
3448 | doc: /* Return a list of alternate glyphs of CHARACTER in FONT-OBJECT. | |
3449 | FEATURE-SPEC specifies which features of the font FONT-OBJECT to apply | |
3450 | in this format: | |
3451 | (SCRIPT LANGSYS FEATURE ...) | |
3452 | See the documentation of `font-otf-gsub' for more detail. | |
3453 | ||
3454 | The value is a list of cons cells of the format (GLYPH-ID . CHARACTER), | |
3455 | where GLYPH-ID is a glyph index of the font, and CHARACTER is a | |
3456 | character code corresponding to the glyph or nil if there's no | |
3457 | corresponding character. */) | |
3458 | (font_object, character, feature_spec) | |
3459 | Lisp_Object font_object, character, feature_spec; | |
3460 | { | |
3461 | struct font *font; | |
3462 | Lisp_Object gstring_in, gstring_out, g; | |
3463 | Lisp_Object alternates; | |
3464 | int i, num; | |
3465 | ||
3466 | CHECK_FONT_GET_OBJECT (font_object, font); | |
e950d6f1 KH |
3467 | if (! font->driver->otf_gsub) |
3468 | error ("Font backend %s can't drive OpenType GSUB table", | |
3469 | SDATA (SYMBOL_NAME (font->driver->type))); | |
e80e09b4 KH |
3470 | CHECK_CHARACTER (character); |
3471 | CHECK_CONS (feature_spec); | |
3472 | ||
3473 | gstring_in = Ffont_make_gstring (font_object, make_number (1)); | |
3474 | g = LGSTRING_GLYPH (gstring_in, 0); | |
3475 | LGLYPH_SET_CHAR (g, character); | |
3476 | gstring_out = Ffont_make_gstring (font_object, make_number (10)); | |
e950d6f1 KH |
3477 | while ((num = font->driver->otf_gsub (font, feature_spec, gstring_in, 0, 1, |
3478 | gstring_out, 0, 1)) < 0) | |
e80e09b4 KH |
3479 | gstring_out = Ffont_make_gstring (font_object, |
3480 | make_number (ASIZE (gstring_out) * 2)); | |
3481 | alternates = Qnil; | |
3482 | for (i = 0; i < num; i++) | |
3483 | { | |
3484 | Lisp_Object g = LGSTRING_GLYPH (gstring_out, i); | |
3485 | int c = XINT (LGLYPH_CHAR (g)); | |
3486 | unsigned code = XUINT (LGLYPH_CODE (g)); | |
e80e09b4 KH |
3487 | |
3488 | alternates = Fcons (Fcons (make_number (code), | |
3489 | c > 0 ? make_number (c) : Qnil), | |
3490 | alternates); | |
3491 | } | |
3492 | return Fnreverse (alternates); | |
3493 | } | |
3494 | ||
c2f5bfd6 KH |
3495 | |
3496 | #ifdef FONT_DEBUG | |
3497 | ||
3498 | DEFUN ("open-font", Fopen_font, Sopen_font, 1, 3, 0, | |
3499 | doc: /* Open FONT-ENTITY. */) | |
3500 | (font_entity, size, frame) | |
3501 | Lisp_Object font_entity; | |
3502 | Lisp_Object size; | |
3503 | Lisp_Object frame; | |
3504 | { | |
3505 | int isize; | |
3506 | ||
3507 | CHECK_FONT_ENTITY (font_entity); | |
3508 | if (NILP (size)) | |
3509 | size = AREF (font_entity, FONT_SIZE_INDEX); | |
3510 | CHECK_NUMBER (size); | |
3511 | if (NILP (frame)) | |
3512 | frame = selected_frame; | |
3513 | CHECK_LIVE_FRAME (frame); | |
3514 | ||
3515 | isize = XINT (size); | |
3516 | if (isize < 0) | |
3517 | isize = POINT_TO_PIXEL (- isize, XFRAME (frame)->resy); | |
3518 | ||
3519 | return font_open_entity (XFRAME (frame), font_entity, isize); | |
3520 | } | |
3521 | ||
3522 | DEFUN ("close-font", Fclose_font, Sclose_font, 1, 2, 0, | |
3523 | doc: /* Close FONT-OBJECT. */) | |
3524 | (font_object, frame) | |
3525 | Lisp_Object font_object, frame; | |
3526 | { | |
3527 | CHECK_FONT_OBJECT (font_object); | |
3528 | if (NILP (frame)) | |
3529 | frame = selected_frame; | |
3530 | CHECK_LIVE_FRAME (frame); | |
3531 | font_close_object (XFRAME (frame), font_object); | |
3532 | return Qnil; | |
3533 | } | |
3534 | ||
3535 | DEFUN ("query-font", Fquery_font, Squery_font, 1, 1, 0, | |
e80e09b4 KH |
3536 | doc: /* Return information about FONT-OBJECT. |
3537 | The value is a vector: | |
3538 | [ NAME FILENAME PIXEL-SIZE SIZE ASCENT DESCENT SPACE-WIDTH AVERAGE-WIDTH | |
e0708580 | 3539 | CAPABILITY ] |
e80e09b4 KH |
3540 | |
3541 | NAME is a string of the font name (or nil if the font backend doesn't | |
3542 | provide a name). | |
3543 | ||
3544 | FILENAME is a string of the font file (or nil if the font backend | |
3545 | doesn't provide a file name). | |
3546 | ||
3547 | PIXEL-SIZE is a pixel size by which the font is opened. | |
3548 | ||
3549 | SIZE is a maximum advance width of the font in pixel. | |
3550 | ||
3551 | ASCENT, DESCENT, SPACE-WIDTH, AVERAGE-WIDTH are metrics of the font in | |
3552 | pixel. | |
3553 | ||
e0708580 KH |
3554 | CAPABILITY is a list whose first element is a symbol representing the |
3555 | font format \(x, opentype, truetype, type1, pcf, or bdf) and the | |
3556 | remaining elements describes a detail of the font capability. | |
3557 | ||
3558 | If the font is OpenType font, the form of the list is | |
3559 | \(opentype GSUB GPOS) | |
3560 | where GSUB shows which "GSUB" features the font supports, and GPOS | |
3561 | shows which "GPOS" features the font supports. Both GSUB and GPOS are | |
3562 | lists of the format: | |
3563 | \((SCRIPT (LANGSYS FEATURE ...) ...) ...) | |
3564 | ||
3565 | If the font is not OpenType font, currently the length of the form is | |
3566 | one. | |
e80e09b4 KH |
3567 | |
3568 | SCRIPT is a symbol representing OpenType script tag. | |
3569 | ||
3570 | LANGSYS is a symbol representing OpenType langsys tag, or nil | |
3571 | representing the default langsys. | |
3572 | ||
3573 | FEATURE is a symbol representing OpenType feature tag. | |
3574 | ||
3575 | If the font is not OpenType font, OTF-CAPABILITY is nil. */) | |
c2f5bfd6 KH |
3576 | (font_object) |
3577 | Lisp_Object font_object; | |
3578 | { | |
3579 | struct font *font; | |
3580 | Lisp_Object val; | |
3581 | ||
3582 | CHECK_FONT_GET_OBJECT (font_object, font); | |
3583 | ||
3584 | val = Fmake_vector (make_number (9), Qnil); | |
e80e09b4 KH |
3585 | if (font->font.full_name) |
3586 | ASET (val, 0, make_unibyte_string (font->font.full_name, | |
3587 | strlen (font->font.full_name))); | |
c2f5bfd6 KH |
3588 | if (font->file_name) |
3589 | ASET (val, 1, make_unibyte_string (font->file_name, | |
3590 | strlen (font->file_name))); | |
3591 | ASET (val, 2, make_number (font->pixel_size)); | |
3592 | ASET (val, 3, make_number (font->font.size)); | |
3593 | ASET (val, 4, make_number (font->ascent)); | |
3594 | ASET (val, 5, make_number (font->descent)); | |
3595 | ASET (val, 6, make_number (font->font.space_width)); | |
3596 | ASET (val, 7, make_number (font->font.average_width)); | |
3597 | if (font->driver->otf_capability) | |
e0708580 KH |
3598 | ASET (val, 8, Fcons (Qopentype, font->driver->otf_capability (font))); |
3599 | else | |
3600 | ASET (val, 8, Fcons (font->format, Qnil)); | |
c2f5bfd6 KH |
3601 | return val; |
3602 | } | |
3603 | ||
3604 | DEFUN ("get-font-glyphs", Fget_font_glyphs, Sget_font_glyphs, 2, 2, 0, | |
3605 | doc: /* Return a vector of glyphs of FONT-OBJECT for drawing STRING. | |
3606 | Each element is a vector [GLYPH-CODE LBEARING RBEARING WIDTH ASCENT DESCENT]. */) | |
3607 | (font_object, string) | |
3608 | Lisp_Object font_object, string; | |
3609 | { | |
3610 | struct font *font; | |
3611 | int i, len; | |
3612 | Lisp_Object vec; | |
3613 | ||
3614 | CHECK_FONT_GET_OBJECT (font_object, font); | |
3615 | CHECK_STRING (string); | |
3616 | len = SCHARS (string); | |
3617 | vec = Fmake_vector (make_number (len), Qnil); | |
3618 | for (i = 0; i < len; i++) | |
3619 | { | |
3620 | Lisp_Object ch = Faref (string, make_number (i)); | |
3621 | Lisp_Object val; | |
3622 | int c = XINT (ch); | |
3623 | unsigned code; | |
3624 | struct font_metrics metrics; | |
3625 | ||
3626 | code = font->driver->encode_char (font, c); | |
3627 | if (code == FONT_INVALID_CODE) | |
3628 | continue; | |
3629 | val = Fmake_vector (make_number (6), Qnil); | |
3630 | if (code <= MOST_POSITIVE_FIXNUM) | |
3631 | ASET (val, 0, make_number (code)); | |
3632 | else | |
3633 | ASET (val, 0, Fcons (make_number (code >> 16), | |
3634 | make_number (code & 0xFFFF))); | |
3635 | font->driver->text_extents (font, &code, 1, &metrics); | |
3636 | ASET (val, 1, make_number (metrics.lbearing)); | |
3637 | ASET (val, 2, make_number (metrics.rbearing)); | |
3638 | ASET (val, 3, make_number (metrics.width)); | |
3639 | ASET (val, 4, make_number (metrics.ascent)); | |
3640 | ASET (val, 5, make_number (metrics.descent)); | |
3641 | ASET (vec, i, val); | |
3642 | } | |
3643 | return vec; | |
3644 | } | |
3645 | ||
ec6fe57c KH |
3646 | DEFUN ("font-match-p", Ffont_match_p, Sfont_match_p, 2, 2, 0, |
3647 | doc: /* Return t iff font-spec SPEC matches with FONT. | |
3648 | FONT is a font-spec, font-entity, or font-object. */) | |
3649 | (spec, font) | |
3650 | Lisp_Object spec, font; | |
3651 | { | |
3652 | CHECK_FONT_SPEC (spec); | |
3653 | if (FONT_OBJECT_P (font)) | |
3654 | font = ((struct font *) XSAVE_VALUE (font)->pointer)->entity; | |
3655 | else if (! FONT_ENTITY_P (font)) | |
3656 | CHECK_FONT_SPEC (font); | |
3657 | ||
3658 | return (font_match_p (spec, font) ? Qt : Qnil); | |
3659 | } | |
3660 | ||
10d16101 KH |
3661 | DEFUN ("font-at", Ffont_at, Sfont_at, 1, 2, 0, |
3662 | doc: /* Return a font-object for displaying a character at POSISTION. | |
3663 | Optional second arg WINDOW, if non-nil, is a window displaying | |
3664 | the current buffer. It defaults to the currently selected window. */) | |
3665 | (position, window) | |
3666 | Lisp_Object position, window; | |
3667 | { | |
3668 | struct window *w; | |
3669 | EMACS_INT pos, pos_byte; | |
3670 | int c; | |
3671 | ||
3672 | CHECK_NUMBER_COERCE_MARKER (position); | |
3673 | pos = XINT (position); | |
3674 | if (pos < BEGV || pos >= ZV) | |
3675 | args_out_of_range_3 (position, make_number (BEGV), make_number (ZV)); | |
3676 | pos_byte = CHAR_TO_BYTE (pos); | |
3677 | c = FETCH_CHAR (pos_byte); | |
3678 | if (NILP (window)) | |
3679 | window = selected_window; | |
3680 | CHECK_LIVE_WINDOW (window); | |
3681 | w = XWINDOW (selected_window); | |
3682 | ||
3683 | return font_at (c, pos, NULL, w, Qnil); | |
3684 | } | |
3685 | ||
c2f5bfd6 KH |
3686 | #if 0 |
3687 | DEFUN ("draw-string", Fdraw_string, Sdraw_string, 2, 2, 0, | |
3688 | doc: /* Draw STRING by FONT-OBJECT on the top left corner of the current frame. | |
3689 | The value is a number of glyphs drawn. | |
3690 | Type C-l to recover what previously shown. */) | |
3691 | (font_object, string) | |
3692 | Lisp_Object font_object, string; | |
3693 | { | |
3694 | Lisp_Object frame = selected_frame; | |
3695 | FRAME_PTR f = XFRAME (frame); | |
3696 | struct font *font; | |
3697 | struct face *face; | |
3698 | int i, len, width; | |
3699 | unsigned *code; | |
3700 | ||
3701 | CHECK_FONT_GET_OBJECT (font_object, font); | |
3702 | CHECK_STRING (string); | |
3703 | len = SCHARS (string); | |
3704 | code = alloca (sizeof (unsigned) * len); | |
3705 | for (i = 0; i < len; i++) | |
3706 | { | |
3707 | Lisp_Object ch = Faref (string, make_number (i)); | |
3708 | Lisp_Object val; | |
3709 | int c = XINT (ch); | |
3710 | ||
3711 | code[i] = font->driver->encode_char (font, c); | |
3712 | if (code[i] == FONT_INVALID_CODE) | |
3713 | break; | |
3714 | } | |
3715 | face = FACE_FROM_ID (f, DEFAULT_FACE_ID); | |
3716 | face->fontp = font; | |
3717 | if (font->driver->prepare_face) | |
3718 | font->driver->prepare_face (f, face); | |
3719 | width = font->driver->text_extents (font, code, i, NULL); | |
3720 | len = font->driver->draw_text (f, face, 0, font->ascent, code, i, width); | |
3721 | if (font->driver->done_face) | |
3722 | font->driver->done_face (f, face); | |
3723 | face->fontp = NULL; | |
3724 | return make_number (len); | |
3725 | } | |
3726 | #endif | |
3727 | ||
3728 | #endif /* FONT_DEBUG */ | |
3729 | ||
3730 | \f | |
3731 | extern void syms_of_ftfont P_ (()); | |
3732 | extern void syms_of_xfont P_ (()); | |
3733 | extern void syms_of_xftfont P_ (()); | |
3734 | extern void syms_of_ftxfont P_ (()); | |
3735 | extern void syms_of_bdffont P_ (()); | |
3736 | extern void syms_of_w32font P_ (()); | |
3737 | extern void syms_of_atmfont P_ (()); | |
3738 | ||
3739 | void | |
3740 | syms_of_font () | |
3741 | { | |
3742 | sort_shift_bits[FONT_SLANT_INDEX] = 0; | |
3743 | sort_shift_bits[FONT_WEIGHT_INDEX] = 7; | |
3744 | sort_shift_bits[FONT_SIZE_INDEX] = 14; | |
3745 | sort_shift_bits[FONT_WIDTH_INDEX] = 21; | |
3746 | sort_shift_bits[FONT_ADSTYLE_INDEX] = 28; | |
3747 | sort_shift_bits[FONT_FOUNDRY_INDEX] = 29; | |
3748 | sort_shift_bits[FONT_FAMILY_INDEX] = 30; | |
3749 | sort_shift_bits[FONT_REGISTRY_INDEX] = 31; | |
fe5ddfbc | 3750 | /* Note that sort_shift_bits[FONT_TYPE_INDEX] is never used. */ |
c2f5bfd6 KH |
3751 | |
3752 | staticpro (&font_style_table); | |
3753 | font_style_table = Fmake_vector (make_number (3), Qnil); | |
3754 | ||
3755 | staticpro (&font_family_alist); | |
3756 | font_family_alist = Qnil; | |
3757 | ||
3758 | DEFSYM (Qfontp, "fontp"); | |
e0708580 | 3759 | DEFSYM (Qopentype, "opentype"); |
c2f5bfd6 | 3760 | |
1bb1d99b KH |
3761 | DEFSYM (Qiso8859_1, "iso8859-1"); |
3762 | DEFSYM (Qiso10646_1, "iso10646-1"); | |
3763 | DEFSYM (Qunicode_bmp, "unicode-bmp"); | |
cf96c5c2 | 3764 | DEFSYM (Qunicode_sip, "unicode-sip"); |
1bb1d99b | 3765 | |
c2f5bfd6 KH |
3766 | DEFSYM (QCotf, ":otf"); |
3767 | DEFSYM (QClanguage, ":language"); | |
3768 | DEFSYM (QCscript, ":script"); | |
3769 | ||
3770 | DEFSYM (QCfoundry, ":foundry"); | |
3771 | DEFSYM (QCadstyle, ":adstyle"); | |
3772 | DEFSYM (QCregistry, ":registry"); | |
9331887d KH |
3773 | DEFSYM (QCspacing, ":spacing"); |
3774 | DEFSYM (QCdpi, ":dpi"); | |
ec6fe57c | 3775 | DEFSYM (QCscalable, ":scalable"); |
c2f5bfd6 KH |
3776 | DEFSYM (QCextra, ":extra"); |
3777 | ||
ec6fe57c KH |
3778 | DEFSYM (Qc, "c"); |
3779 | DEFSYM (Qm, "m"); | |
3780 | DEFSYM (Qp, "p"); | |
3781 | DEFSYM (Qd, "d"); | |
3782 | ||
c2f5bfd6 KH |
3783 | staticpro (&null_string); |
3784 | null_string = build_string (""); | |
3785 | staticpro (&null_vector); | |
3786 | null_vector = Fmake_vector (make_number (0), Qnil); | |
3787 | ||
3788 | staticpro (&scratch_font_spec); | |
3789 | scratch_font_spec = Ffont_spec (0, NULL); | |
3790 | staticpro (&scratch_font_prefer); | |
3791 | scratch_font_prefer = Ffont_spec (0, NULL); | |
3792 | ||
3793 | defsubr (&Sfontp); | |
3794 | defsubr (&Sfont_spec); | |
3795 | defsubr (&Sfont_get); | |
3796 | defsubr (&Sfont_put); | |
3797 | defsubr (&Slist_fonts); | |
3798 | defsubr (&Slist_families); | |
3799 | defsubr (&Sfind_font); | |
3800 | defsubr (&Sfont_xlfd_name); | |
3801 | defsubr (&Sclear_font_cache); | |
3802 | defsubr (&Sinternal_set_font_style_table); | |
3803 | defsubr (&Sfont_make_gstring); | |
3804 | defsubr (&Sfont_fill_gstring); | |
e80e09b4 KH |
3805 | defsubr (&Sfont_otf_gsub); |
3806 | defsubr (&Sfont_otf_gpos); | |
3807 | defsubr (&Sfont_otf_alternates); | |
c2f5bfd6 KH |
3808 | |
3809 | #ifdef FONT_DEBUG | |
3810 | defsubr (&Sopen_font); | |
3811 | defsubr (&Sclose_font); | |
3812 | defsubr (&Squery_font); | |
3813 | defsubr (&Sget_font_glyphs); | |
ec6fe57c | 3814 | defsubr (&Sfont_match_p); |
10d16101 | 3815 | defsubr (&Sfont_at); |
c2f5bfd6 KH |
3816 | #if 0 |
3817 | defsubr (&Sdraw_string); | |
3818 | #endif | |
3819 | #endif /* FONT_DEBUG */ | |
3820 | ||
3821 | #ifdef HAVE_FREETYPE | |
3822 | syms_of_ftfont (); | |
3823 | #ifdef HAVE_X_WINDOWS | |
3824 | syms_of_xfont (); | |
3825 | syms_of_ftxfont (); | |
3826 | #ifdef HAVE_XFT | |
3827 | syms_of_xftfont (); | |
3828 | #endif /* HAVE_XFT */ | |
3829 | #endif /* HAVE_X_WINDOWS */ | |
3830 | #else /* not HAVE_FREETYPE */ | |
3831 | #ifdef HAVE_X_WINDOWS | |
3832 | syms_of_xfont (); | |
3833 | #endif /* HAVE_X_WINDOWS */ | |
3834 | #endif /* not HAVE_FREETYPE */ | |
3835 | #ifdef HAVE_BDFFONT | |
3836 | syms_of_bdffont (); | |
3837 | #endif /* HAVE_BDFFONT */ | |
3838 | #ifdef WINDOWSNT | |
3839 | syms_of_w32font (); | |
3840 | #endif /* WINDOWSNT */ | |
3841 | #ifdef MAC_OS | |
3842 | syms_of_atmfont (); | |
3843 | #endif /* MAC_OS */ | |
3844 | } | |
885b7d09 MB |
3845 | |
3846 | /* arch-tag: 74c9475d-5976-4c93-a327-942ae3072846 | |
3847 | (do not change this comment) */ |