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(emacs-uptime): Add optional `format' argument. Doc fix. Use `%z'
[emacs.git] / src / ftfont.c
blob9fb50d3dba348ec41674cd50abf859ddd8fa07ab
1 /* ftfont.c -- FreeType font driver.
2 Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
3 Copyright (C) 2006, 2007, 2008
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 3, 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
27 #include <fontconfig/fontconfig.h>
28 #include <fontconfig/fcfreetype.h>
29
30 #include "lisp.h"
31 #include "dispextern.h"
32 #include "frame.h"
33 #include "blockinput.h"
34 #include "character.h"
35 #include "charset.h"
36 #include "coding.h"
37 #include "fontset.h"
38 #include "font.h"
39 #include "ftfont.h"
40
41 /* Symbolic type of this font-driver. */
42 Lisp_Object Qfreetype;
43
44 /* Fontconfig's generic families and their aliases. */
45 static Lisp_Object Qmonospace, Qsans_serif, Qserif, Qmono, Qsans, Qsans__serif;
46
47 /* Flag to tell if FcInit is areadly called or not. */
48 static int fc_initialized;
49
50 /* Handle to a FreeType library instance. */
51 static FT_Library ft_library;
52
53 /* Cache for FreeType fonts. */
54 static Lisp_Object freetype_font_cache;
55
56 /* Fontconfig's charset used for finding fonts of registry
57 "iso8859-1". */
58 static FcCharSet *cs_iso8859_1;
59
60 /* The actual structure for FreeType font that can be casted to struct
61 font. */
62
63 struct ftfont_info
64 {
65 struct font font;
66 FT_Size ft_size;
67 #ifdef HAVE_LIBOTF
68 int maybe_otf; /* Flag to tell if this may be OTF or not. */
69 OTF *otf;
70 #endif /* HAVE_LIBOTF */
71 };
72
73 static int ftfont_build_basic_charsets P_ ((void));
74 static Lisp_Object ftfont_pattern_entity P_ ((FcPattern *,
75 Lisp_Object, Lisp_Object));
76 static Lisp_Object ftfont_list_generic_family P_ ((Lisp_Object, Lisp_Object,
77 Lisp_Object));
78 Lisp_Object ftfont_font_format P_ ((FcPattern *));
79
80 #define SYMBOL_FcChar8(SYM) (FcChar8 *) SDATA (SYMBOL_NAME (SYM))
81
82 static int
83 ftfont_build_basic_charsets ()
84 {
85 FcChar32 c;
86
87 cs_iso8859_1 = FcCharSetCreate ();
88 if (! cs_iso8859_1)
89 return -1;
90 for (c = ' '; c < 127; c++)
91 if (! FcCharSetAddChar (cs_iso8859_1, c))
92 return -1;
93 #if 0
94 /* This part is currently disabled. Should be fixed later. */
95 for (c = 192; c < 256; c++)
96 if (! FcCharSetAddChar (cs_iso8859_1, c))
97 return -1;
98 #endif
99 return 0;
100 }
101
102 static Lisp_Object
103 ftfont_pattern_entity (p, frame, registry)
104 FcPattern *p;
105 Lisp_Object frame, registry;
106 {
107 Lisp_Object entity;
108 FcChar8 *file, *fontformat;
109 FcCharSet *charset;
110 char *str;
111 int numeric;
112 double dbl;
113
114 if (FcPatternGetString (p, FC_FILE, 0, &file) != FcResultMatch)
115 return Qnil;
116 if (FcPatternGetCharSet (p, FC_CHARSET, 0, &charset) != FcResultMatch)
117 charset = NULL;
118 #ifdef FC_FONTFORMAT
119 if (FcPatternGetString (p, FC_FONTFORMAT, 0, &fontformat) != FcResultMatch)
120 #endif /* FC_FONTFORMAT */
121 fontformat = NULL;
122
123 entity = Fmake_vector (make_number (FONT_ENTITY_MAX), null_string);
124
125 ASET (entity, FONT_TYPE_INDEX, Qfreetype);
126 ASET (entity, FONT_REGISTRY_INDEX, registry);
127 ASET (entity, FONT_FRAME_INDEX, frame);
128 ASET (entity, FONT_OBJLIST_INDEX, Qnil);
129
130 if (FcPatternGetString (p, FC_FOUNDRY, 0, (FcChar8 **) &str) == FcResultMatch)
131 ASET (entity, FONT_FOUNDRY_INDEX, intern_downcase (str, strlen (str)));
132 if (FcPatternGetString (p, FC_FAMILY, 0, (FcChar8 **) &str) == FcResultMatch)
133 ASET (entity, FONT_FAMILY_INDEX, intern_downcase (str, strlen (str)));
134 if (FcPatternGetInteger (p, FC_WEIGHT, 0, &numeric) == FcResultMatch)
135 {
136 if (numeric == FC_WEIGHT_REGULAR)
137 numeric = 100;
138 ASET (entity, FONT_WEIGHT_INDEX, make_number (numeric));
139 }
140 if (FcPatternGetInteger (p, FC_SLANT, 0, &numeric) == FcResultMatch)
141 ASET (entity, FONT_SLANT_INDEX, make_number (numeric + 100));
142 if (FcPatternGetInteger (p, FC_WIDTH, 0, &numeric) == FcResultMatch)
143 ASET (entity, FONT_WIDTH_INDEX, make_number (numeric));
144 if (FcPatternGetDouble (p, FC_PIXEL_SIZE, 0, &dbl) == FcResultMatch)
145 ASET (entity, FONT_SIZE_INDEX, make_number (dbl));
146 else
147 ASET (entity, FONT_SIZE_INDEX, make_number (0));
148
149 if (FcPatternGetInteger (p, FC_SPACING, 0, &numeric) != FcResultMatch)
150 numeric = -1;
151 file = FcStrCopy (file);
152 if (! file)
153 return Qnil;
154
155 p = FcPatternCreate ();
156 if (! p)
157 return Qnil;
158
159 if (FcPatternAddString (p, FC_FILE, file) == FcFalse
160 || (charset
161 && FcPatternAddCharSet (p, FC_CHARSET, charset) == FcFalse)
162 #ifdef FC_FONTFORMAT
163 || (fontformat
164 && FcPatternAddString (p, FC_FONTFORMAT, fontformat) == FcFalse)
165 #endif /* FC_FONTFORMAT */
166 || (numeric >= 0
167 && FcPatternAddInteger (p, FC_SPACING, numeric) == FcFalse))
168 {
169 FcPatternDestroy (p);
170 return Qnil;
171 }
172 ASET (entity, FONT_EXTRA_INDEX, make_save_value (p, 0));
173 return entity;
174 }
175
176 static Lisp_Object ftfont_generic_family_list;
177
178 static Lisp_Object
179 ftfont_list_generic_family (spec, frame, registry)
180 Lisp_Object spec, frame, registry;
181 {
182 Lisp_Object family = AREF (spec, FONT_FAMILY_INDEX);
183 Lisp_Object slot, list, val;
184
185 if (EQ (family, Qmono))
186 family = Qmonospace;
187 else if (EQ (family, Qsans) || EQ (family, Qsans__serif))
188 family = Qsans_serif;
189 slot = assq_no_quit (family, ftfont_generic_family_list);
190 if (! CONSP (slot))
191 return null_vector;
192 list = XCDR (slot);
193 if (EQ (list, Qt))
194 {
195 /* Not yet listed. */
196 FcObjectSet *objset = NULL;
197 FcPattern *pattern = NULL, *pat = NULL;
198 FcFontSet *fontset = NULL;
199 FcChar8 *fam;
200 int i, j;
201
202 objset = FcObjectSetBuild (FC_FOUNDRY, FC_FAMILY, FC_WEIGHT, FC_SLANT,
203 FC_WIDTH, FC_PIXEL_SIZE, FC_SPACING,
204 FC_CHARSET, FC_FILE,
205 #ifdef FC_FONTFORMAT
206 FC_FONTFORMAT,
207 #endif /* FC_FONTFORMAT */
208 NULL);
209 if (! objset)
210 goto err;
211 pattern = FcPatternBuild (NULL, FC_FAMILY, FcTypeString,
212 SYMBOL_FcChar8 (family), (char *) 0);
213 if (! pattern)
214 goto err;
215 pat = FcPatternCreate ();
216 if (! pat)
217 goto err;
218 FcConfigSubstitute (NULL, pattern, FcMatchPattern);
219 for (i = 0, val = Qnil;
220 FcPatternGetString (pattern, FC_FAMILY, i, &fam) == FcResultMatch;
221 i++)
222 {
223 if (strcmp ((char *) fam, (char *) SYMBOL_FcChar8 (family)) == 0)
224 continue;
225 if (! FcPatternAddString (pat, FC_FAMILY, fam))
226 goto err;
227 fontset = FcFontList (NULL, pat, objset);
228 if (! fontset)
229 goto err;
230 /* Here we build the list in reverse order so that the last
231 loop in this function build a list in the correct
232 order. */
233 for (j = 0; j < fontset->nfont; j++)
234 {
235 Lisp_Object entity;
236
237 entity = ftfont_pattern_entity (fontset->fonts[j],
238 frame, registry);
239 if (! NILP (entity))
240 val = Fcons (entity, val);
241 }
242 FcFontSetDestroy (fontset);
243 fontset = NULL;
244 FcPatternDel (pat, FC_FAMILY);
245 }
246 list = val;
247 XSETCDR (slot, list);
248 err:
249 if (pat) FcPatternDestroy (pat);
250 if (pattern) FcPatternDestroy (pattern);
251 if (fontset) FcFontSetDestroy (fontset);
252 if (objset) FcObjectSetDestroy (objset);
253 if (EQ (list, Qt))
254 return Qnil;
255 }
256 ASET (spec, FONT_FAMILY_INDEX, Qnil);
257 for (val = Qnil; CONSP (list); list = XCDR (list))
258 if (font_match_p (spec, XCAR (list)))
259 val = Fcons (XCAR (list), val);
260 ASET (spec, FONT_FAMILY_INDEX, family);
261 return Fvconcat (1, &val);
262 }
263
264
265 static Lisp_Object ftfont_get_cache P_ ((FRAME_PTR));
266 static Lisp_Object ftfont_list P_ ((Lisp_Object, Lisp_Object));
267 static Lisp_Object ftfont_match P_ ((Lisp_Object, Lisp_Object));
268 static Lisp_Object ftfont_list_family P_ ((Lisp_Object));
269 static void ftfont_free_entity P_ ((Lisp_Object));
270 static struct font *ftfont_open P_ ((FRAME_PTR, Lisp_Object, int));
271 static void ftfont_close P_ ((FRAME_PTR, struct font *));
272 static int ftfont_has_char P_ ((Lisp_Object, int));
273 static unsigned ftfont_encode_char P_ ((struct font *, int));
274 static int ftfont_text_extents P_ ((struct font *, unsigned *, int,
275 struct font_metrics *));
276 static int ftfont_get_bitmap P_ ((struct font *, unsigned,
277 struct font_bitmap *, int));
278 static int ftfont_anchor_point P_ ((struct font *, unsigned, int,
279 int *, int *));
280 static Lisp_Object ftfont_shape P_ ((Lisp_Object));
281
282 struct font_driver ftfont_driver =
283 {
284 0, /* Qfreetype */
285 ftfont_get_cache,
286 ftfont_list,
287 ftfont_match,
288 ftfont_list_family,
289 ftfont_free_entity,
290 ftfont_open,
291 ftfont_close,
292 /* We can't draw a text without device dependent functions. */
293 NULL,
294 NULL,
295 ftfont_has_char,
296 ftfont_encode_char,
297 ftfont_text_extents,
298 /* We can't draw a text without device dependent functions. */
299 NULL,
300 ftfont_get_bitmap,
301 NULL,
302 NULL,
303 NULL,
304 ftfont_anchor_point,
305 NULL,
306 NULL,
307 NULL,
308 NULL,
309 #if defined (HAVE_M17N_FLT) && defined (HAVE_LIBOTF)
310 ftfont_shape
311 #else /* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
312 NULL
313 #endif /* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
314 };
315
316 extern Lisp_Object QCname;
317
318 static Lisp_Object
319 ftfont_get_cache (f)
320 FRAME_PTR f;
321 {
322 return freetype_font_cache;
323 }
324
325 struct OpenTypeSpec
326 {
327 Lisp_Object script;
328 unsigned int script_tag, langsys_tag;
329 int nfeatures[2];
330 unsigned int *features[2];
331 };
332
333 #define OTF_SYM_TAG(SYM, TAG) \
334 do { \
335 unsigned char *p = SDATA (SYMBOL_NAME (SYM)); \
336 TAG = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]; \
337 } while (0)
338
339 #define OTF_TAG_STR(TAG, P) \
340 do { \
341 (P)[0] = (char) (TAG >> 24); \
342 (P)[1] = (char) ((TAG >> 16) & 0xFF); \
343 (P)[2] = (char) ((TAG >> 8) & 0xFF); \
344 (P)[3] = (char) (TAG & 0xFF); \
345 (P)[4] = '\0'; \
346 } while (0)
347
348 static struct OpenTypeSpec *
349 ftfont_get_open_type_spec (Lisp_Object otf_spec)
350 {
351 struct OpenTypeSpec *spec = malloc (sizeof (struct OpenTypeSpec));
352 Lisp_Object val;
353 int i, j, negative;
354
355 if (! spec)
356 return NULL;
357 spec->script = XCAR (otf_spec);
358 if (! NILP (val))
359 {
360 OTF_SYM_TAG (spec->script, spec->script_tag);
361 val = assq_no_quit (spec->script, Votf_script_alist);
362 if (CONSP (val) && SYMBOLP (XCDR (val)))
363 spec->script = XCDR (val);
364 else
365 spec->script = Qnil;
366 }
367 else
368 spec->script_tag = 0x44464C54; /* "DFLT" */
369 otf_spec = XCDR (otf_spec);
370 val = XCAR (otf_spec);
371 if (! NILP (val))
372 OTF_SYM_TAG (val, spec->langsys_tag);
373 else
374 spec->langsys_tag = 0;
375 spec->nfeatures[0] = spec->nfeatures[1] = 0;
376 for (i = 0; i < 2; i++)
377 {
378 Lisp_Object len;
379
380 otf_spec = XCDR (otf_spec);
381 if (NILP (otf_spec))
382 break;
383 val = XCAR (otf_spec);
384 if (NILP (val))
385 continue;
386 len = Flength (val);
387 spec->features[i] = malloc (sizeof (int) * XINT (len));
388 if (! spec->features[i])
389 {
390 if (i > 0 && spec->features[0])
391 free (spec->features[0]);
392 free (spec);
393 return NULL;
394 }
395 for (j = 0, negative = 0; CONSP (val); val = XCDR (val))
396 {
397 if (NILP (XCAR (val)))
398 negative = 1;
399 else
400 {
401 unsigned int tag;
402
403 OTF_SYM_TAG (XCAR (val), tag);
404 spec->features[i][j++] = negative ? tag & 0x80000000 : tag;
405 }
406 }
407 spec->nfeatures[i] = j;
408 }
409 return spec;
410 }
411
412 static Lisp_Object
413 ftfont_list (frame, spec)
414 Lisp_Object frame, spec;
415 {
416 Lisp_Object val, tmp, extra;
417 int i;
418 FcPattern *pattern = NULL;
419 FcCharSet *charset = NULL;
420 FcLangSet *langset = NULL;
421 FcFontSet *fontset = NULL;
422 FcObjectSet *objset = NULL;
423 Lisp_Object script;
424 Lisp_Object registry = Qunicode_bmp;
425 struct OpenTypeSpec *otspec= NULL;
426 int weight = 0;
427 double dpi = -1;
428 int spacing = -1;
429 int scalable = -1;
430 char otlayout[15]; /* For "otlayout:XXXX" */
431
432 val = null_vector;
433
434 if (! fc_initialized)
435 {
436 FcInit ();
437 fc_initialized = 1;
438 }
439
440 if (! NILP (AREF (spec, FONT_ADSTYLE_INDEX))
441 && ! EQ (AREF (spec, FONT_ADSTYLE_INDEX), null_string))
442 return val;
443 if (! NILP (AREF (spec, FONT_SLANT_INDEX))
444 && XINT (AREF (spec, FONT_SLANT_INDEX)) < 100)
445 /* Fontconfig doesn't support reverse-italic/obligue. */
446 return val;
447
448 if (! NILP (AREF (spec, FONT_REGISTRY_INDEX)))
449 {
450 registry = AREF (spec, FONT_REGISTRY_INDEX);
451 if (EQ (registry, Qiso8859_1))
452 {
453 if (! cs_iso8859_1
454 && ftfont_build_basic_charsets () < 0)
455 return Qnil;
456 charset = cs_iso8859_1;
457 }
458 else if (! EQ (registry, Qiso10646_1)
459 && ! EQ (registry, Qunicode_bmp)
460 && ! EQ (registry, Qunicode_sip))
461 return val;
462 }
463
464 otlayout[0] = '\0';
465 script = Qnil;
466 for (extra = AREF (spec, FONT_EXTRA_INDEX);
467 CONSP (extra); extra = XCDR (extra))
468 {
469 Lisp_Object key, val;
470
471 tmp = XCAR (extra);
472 key = XCAR (tmp), val = XCDR (tmp);
473 if (EQ (key, QCotf))
474 {
475 otspec = ftfont_get_open_type_spec (val);
476 if (! otspec)
477 return null_vector;
478 strcat (otlayout, "otlayout:");
479 OTF_TAG_STR (otspec->script_tag, otlayout + 9);
480 script = otspec->script;
481 }
482 else if (EQ (key, QClanguage))
483 {
484 langset = FcLangSetCreate ();
485 if (! langset)
486 goto err;
487 if (SYMBOLP (val))
488 {
489 if (! FcLangSetAdd (langset, SYMBOL_FcChar8 (val)))
490 goto err;
491 }
492 else
493 for (; CONSP (val); val = XCDR (val))
494 if (SYMBOLP (XCAR (val))
495 && ! FcLangSetAdd (langset, SYMBOL_FcChar8 (XCAR (val))))
496 goto err;
497 }
498 else if (EQ (key, QCscript))
499 script = val;
500 else if (EQ (key, QCdpi))
501 dpi = XINT (val);
502 else if (EQ (key, QCspacing))
503 spacing = XINT (val);
504 else if (EQ (key, QCscalable))
505 scalable = ! NILP (val);
506 }
507
508 if (! NILP (script) && ! charset)
509 {
510 Lisp_Object chars = assq_no_quit (script, Vscript_representative_chars);
511
512 if (CONSP (chars))
513 {
514 charset = FcCharSetCreate ();
515 if (! charset)
516 goto err;
517 for (chars = XCDR (chars); CONSP (chars); chars = XCDR (chars))
518 if (CHARACTERP (XCAR (chars))
519 && ! FcCharSetAddChar (charset, XUINT (XCAR (chars))))
520 goto err;
521 }
522 }
523
524 pattern = FcPatternCreate ();
525 if (! pattern)
526 goto err;
527 tmp = AREF (spec, FONT_FOUNDRY_INDEX);
528 if (SYMBOLP (tmp) && ! NILP (tmp)
529 && ! FcPatternAddString (pattern, FC_FOUNDRY, SYMBOL_FcChar8 (tmp)))
530 goto err;
531 tmp = AREF (spec, FONT_FAMILY_INDEX);
532 if (SYMBOLP (tmp) && ! NILP (tmp)
533 && ! FcPatternAddString (pattern, FC_FAMILY, SYMBOL_FcChar8 (tmp)))
534 goto err;
535 /* Emacs conventionally doesn't distinguish normal, regular, and
536 medium weight, but fontconfig does. So, we can't restrict font
537 listing by weight. We check it after getting a list. */
538 tmp = AREF (spec, FONT_WEIGHT_INDEX);
539 if (INTEGERP (tmp))
540 weight = XINT (tmp);
541 tmp = AREF (spec, FONT_SLANT_INDEX);
542 if (INTEGERP (tmp)
543 && ! FcPatternAddInteger (pattern, FC_SLANT, XINT (tmp) - 100))
544 goto err;
545 tmp = AREF (spec, FONT_WIDTH_INDEX);
546 if (INTEGERP (tmp)
547 && ! FcPatternAddInteger (pattern, FC_WIDTH, XINT (tmp)))
548 goto err;
549
550 if (charset
551 && ! FcPatternAddCharSet (pattern, FC_CHARSET, charset))
552 goto err;
553 if (langset
554 && ! FcPatternAddLangSet (pattern, FC_LANG, langset))
555 goto err;
556 if (dpi >= 0
557 && ! FcPatternAddDouble (pattern, FC_DPI, dpi))
558 goto err;
559 if (spacing >= 0
560 && ! FcPatternAddInteger (pattern, FC_SPACING, spacing))
561 goto err;
562 if (scalable >= 0
563 && ! FcPatternAddBool (pattern, FC_SCALABLE, scalable ? FcTrue : FcFalse))
564 goto err;
565
566 objset = FcObjectSetBuild (FC_FOUNDRY, FC_FAMILY, FC_WEIGHT, FC_SLANT,
567 FC_WIDTH, FC_PIXEL_SIZE, FC_SPACING,
568 FC_CHARSET, FC_FILE,
569 #ifdef FC_FONTFORMAT
570 FC_FONTFORMAT,
571 #endif /* FC_FONTFORMAT */
572 NULL);
573 if (! objset)
574 goto err;
575 if (otlayout[0])
576 {
577 #ifdef FC_CAPABILITY
578 if (! FcObjectSetAdd (objset, FC_CAPABILITY))
579 goto err;
580 #else /* not FC_CAPABILITY */
581 goto finish;
582 #endif /* not FC_CAPABILITY */
583 }
584
585 fontset = FcFontList (NULL, pattern, objset);
586 if (! fontset)
587 goto err;
588
589 if (fontset->nfont > 0)
590 {
591 double pixel_size;
592
593 if (NILP (AREF (spec, FONT_SIZE_INDEX)))
594 pixel_size = 0;
595 else
596 pixel_size = XINT (AREF (spec, FONT_SIZE_INDEX));
597
598 for (i = 0, val = Qnil; i < fontset->nfont; i++)
599 {
600 Lisp_Object entity;
601
602 if (pixel_size > 0)
603 {
604 double this;
605
606 if (FcPatternGetDouble (fontset->fonts[i], FC_PIXEL_SIZE, 0,
607 &this) == FcResultMatch
608 && ((this < pixel_size - FONT_PIXEL_SIZE_QUANTUM)
609 || (this > pixel_size + FONT_PIXEL_SIZE_QUANTUM)))
610 continue;
611 }
612 if (weight > 0)
613 {
614 int this;
615
616 if (FcPatternGetInteger (fontset->fonts[i], FC_WEIGHT, 0,
617 &this) != FcResultMatch
618 || (this != weight
619 && (weight != 100
620 || this < FC_WEIGHT_REGULAR
621 || this > FC_WEIGHT_MEDIUM)))
622 continue;
623 }
624 #ifdef FC_CAPABILITY
625 if (otlayout[0])
626 {
627 FcChar8 *this;
628
629 if (FcPatternGetString (fontset->fonts[i], FC_CAPABILITY, 0,
630 &this) != FcResultMatch
631 || ! strstr ((char *) this, otlayout))
632 continue;
633 }
634 #endif /* FC_CAPABILITY */
635 #ifdef HAVE_LIBOTF
636 if (otspec)
637 {
638 FcChar8 *file;
639 OTF *otf;
640
641 if (FcPatternGetString (fontset->fonts[i], FC_FILE, 0, &file)
642 != FcResultMatch)
643 continue;
644 otf = OTF_open ((char *) file);
645 if (! otf)
646 continue;
647 if (OTF_check_features (otf, 1,
648 otspec->script_tag, otspec->langsys_tag,
649 otspec->features[0],
650 otspec->nfeatures[0]) != 1
651 || OTF_check_features (otf, 0,
652 otspec->script_tag, otspec->langsys_tag,
653 otspec->features[1],
654 otspec->nfeatures[1]) != 1)
655 continue;
656 }
657 #endif /* HAVE_LIBOTF */
658 entity = ftfont_pattern_entity (fontset->fonts[i], frame, registry);
659 if (! NILP (entity))
660 val = Fcons (entity, val);
661 }
662 val = Fvconcat (1, &val);
663 }
664 else if (! NILP (AREF (spec, FONT_FAMILY_INDEX)))
665 val = ftfont_list_generic_family (spec, frame, registry);
666 goto finish;
667
668 err:
669 /* We come here because of unexpected error in fontconfig API call
670 (usually insufficient memory). */
671 val = Qnil;
672
673 finish:
674 if (charset && charset != cs_iso8859_1) FcCharSetDestroy (charset);
675 if (objset) FcObjectSetDestroy (objset);
676 if (fontset) FcFontSetDestroy (fontset);
677 if (langset) FcLangSetDestroy (langset);
678 if (pattern) FcPatternDestroy (pattern);
679 if (otspec)
680 {
681 if (otspec->nfeatures[0] > 0)
682 free (otspec->features[0]);
683 if (otspec->nfeatures[1] > 0)
684 free (otspec->features[1]);
685 free (otspec);
686 }
687 return val;
688 }
689
690 static Lisp_Object
691 ftfont_match (frame, spec)
692 Lisp_Object frame, spec;
693 {
694 Lisp_Object extra, val, entity;
695 FcPattern *pattern = NULL, *match = NULL;
696 FcResult result;
697
698 if (! fc_initialized)
699 {
700 FcInit ();
701 fc_initialized = 1;
702 }
703
704 extra = AREF (spec, FONT_EXTRA_INDEX);
705 val = assq_no_quit (QCname, extra);
706 if (! CONSP (val) || ! STRINGP (XCDR (val)))
707 return Qnil;
708
709 entity = Qnil;
710 pattern = FcNameParse (SDATA (XCDR (val)));
711 if (pattern)
712 {
713 if (FcConfigSubstitute (NULL, pattern, FcMatchPattern) == FcTrue)
714 {
715 FcDefaultSubstitute (pattern);
716 match = FcFontMatch (NULL, pattern, &result);
717 if (match)
718 {
719 entity = ftfont_pattern_entity (match, frame, Qunicode_bmp);
720 FcPatternDestroy (match);
721 }
722 }
723 FcPatternDestroy (pattern);
724 }
725
726 return entity;
727 }
728
729 static Lisp_Object
730 ftfont_list_family (frame)
731 Lisp_Object frame;
732 {
733 Lisp_Object list;
734 FcPattern *pattern = NULL;
735 FcFontSet *fontset = NULL;
736 FcObjectSet *objset = NULL;
737 int i;
738
739 if (! fc_initialized)
740 {
741 FcInit ();
742 fc_initialized = 1;
743 }
744
745 pattern = FcPatternCreate ();
746 if (! pattern)
747 goto finish;
748 objset = FcObjectSetBuild (FC_FAMILY, NULL);
749 if (! objset)
750 goto finish;
751 fontset = FcFontList (NULL, pattern, objset);
752 if (! fontset)
753 goto finish;
754
755 list = Qnil;
756 for (i = 0; i < fontset->nfont; i++)
757 {
758 FcPattern *pat = fontset->fonts[i];
759 FcChar8 *str;
760
761 if (FcPatternGetString (pat, FC_FAMILY, 0, &str) == FcResultMatch)
762 list = Fcons (intern_downcase ((char *) str, strlen ((char *) str)),
763 list);
764 }
765
766 finish:
767 if (objset) FcObjectSetDestroy (objset);
768 if (fontset) FcFontSetDestroy (fontset);
769 if (pattern) FcPatternDestroy (pattern);
770
771 return list;
772 }
773
774
775 static void
776 ftfont_free_entity (entity)
777 Lisp_Object entity;
778 {
779 Lisp_Object val = AREF (entity, FONT_EXTRA_INDEX);
780 FcPattern *pattern = XSAVE_VALUE (val)->pointer;
781
782 FcPatternDestroy (pattern);
783 }
784
785 static struct font *
786 ftfont_open (f, entity, pixel_size)
787 FRAME_PTR f;
788 Lisp_Object entity;
789 int pixel_size;
790 {
791 struct ftfont_info *ftfont_info;
792 struct font *font;
793 FT_Face ft_face;
794 FT_Size ft_size;
795 FT_UInt size;
796 Lisp_Object val;
797 FcPattern *pattern;
798 FcChar8 *file;
799 int spacing;
800 char *name;
801 int len;
802
803 val = AREF (entity, FONT_EXTRA_INDEX);
804 if (XTYPE (val) != Lisp_Misc
805 || XMISCTYPE (val) != Lisp_Misc_Save_Value)
806 return NULL;
807 pattern = XSAVE_VALUE (val)->pointer;
808 if (XSAVE_VALUE (val)->integer == 0)
809 {
810 /* We have not yet created FT_Face for this font. */
811 if (! ft_library
812 && FT_Init_FreeType (&ft_library) != 0)
813 return NULL;
814 if (FcPatternGetString (pattern, FC_FILE, 0, &file) != FcResultMatch)
815 return NULL;
816 if (FT_New_Face (ft_library, (char *) file, 0, &ft_face) != 0)
817 return NULL;
818 FcPatternAddFTFace (pattern, FC_FT_FACE, ft_face);
819 ft_size = ft_face->size;
820 }
821 else
822 {
823 if (FcPatternGetFTFace (pattern, FC_FT_FACE, 0, &ft_face)
824 != FcResultMatch)
825 return NULL;
826 if (FT_New_Size (ft_face, &ft_size) != 0)
827 return NULL;
828 if (FT_Activate_Size (ft_size) != 0)
829 {
830 FT_Done_Size (ft_size);
831 return NULL;
832 }
833 }
834
835 size = XINT (AREF (entity, FONT_SIZE_INDEX));
836 if (size == 0)
837 size = pixel_size;
838 if (FT_Set_Pixel_Sizes (ft_face, size, size) != 0)
839 {
840 if (XSAVE_VALUE (val)->integer == 0)
841 FT_Done_Face (ft_face);
842 return NULL;
843 }
844
845 ftfont_info = malloc (sizeof (struct ftfont_info));
846 if (! ftfont_info)
847 return NULL;
848 ftfont_info->ft_size = ft_size;
849 #ifdef HAVE_LIBOTF
850 ftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT;
851 ftfont_info->otf = NULL;
852 #endif /* HAVE_LIBOTF */
853
854 font = (struct font *) ftfont_info;
855 font->format = ftfont_font_format (pattern);
856 font->entity = entity;
857 font->pixel_size = size;
858 font->driver = &ftfont_driver;
859 len = 96;
860 name = malloc (len);
861 while (name && font_unparse_fcname (entity, pixel_size, name, len) < 0)
862 {
863 char *new = realloc (name, len += 32);
864
865 if (! new)
866 free (name);
867 name = new;
868 }
869 font->font.full_name = font->font.name = name;
870 font->file_name = (char *) file;
871 font->font.size = ft_face->size->metrics.max_advance >> 6;
872 if (font->font.size <= 0)
873 font->font.size = size;
874 font->font.charset = font->encoding_charset = font->repertory_charset = -1;
875 font->ascent = ft_face->size->metrics.ascender >> 6;
876 font->descent = - ft_face->size->metrics.descender >> 6;
877 font->font.height = font->ascent + font->descent;
878 if (FcPatternGetInteger (pattern, FC_SPACING, 0, &spacing) != FcResultMatch)
879 spacing = FC_PROPORTIONAL;
880 if (spacing != FC_PROPORTIONAL)
881 font->font.average_width = font->font.space_width = font->font.size;
882 else
883 {
884 int i;
885
886 font->font.average_width = font->font.space_width = 0;
887 for (i = 32; i < 127; i++)
888 {
889 if (FT_Load_Char (ft_face, i, FT_LOAD_DEFAULT) != 0)
890 break;
891 if (i == 32)
892 font->font.space_width = ft_face->glyph->metrics.horiAdvance >> 6;
893 font->font.average_width += ft_face->glyph->metrics.horiAdvance >> 6;
894 }
895 if (i == 127)
896 {
897 /* The font contains all ASCII printable characters. */
898 font->font.average_width /= 95;
899 }
900 else
901 {
902 if (i == 32)
903 font->font.space_width = font->font.size;
904 font->font.average_width = font->font.size;
905 }
906 }
907
908 /* Unfortunately FreeType doesn't provide a way to get minimum char
909 width. So, we use space_width instead. */
910 font->min_width = font->font.space_width;
911
912 font->font.baseline_offset = 0;
913 font->font.relative_compose = 0;
914 font->font.default_ascent = 0;
915 font->font.vertical_centering = 0;
916
917 (XSAVE_VALUE (val)->integer)++;
918
919 return font;
920 }
921
922 static void
923 ftfont_close (f, font)
924 FRAME_PTR f;
925 struct font *font;
926 {
927 struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
928 Lisp_Object entity = font->entity;
929 Lisp_Object val = AREF (entity, FONT_EXTRA_INDEX);
930
931 (XSAVE_VALUE (val)->integer)--;
932 if (XSAVE_VALUE (val)->integer == 0)
933 {
934 FT_Done_Face (ftfont_info->ft_size->face);
935 #ifdef HAVE_LIBOTF
936 if (ftfont_info->otf)
937 OTF_close (ftfont_info->otf);
938 #endif
939 }
940 else
941 FT_Done_Size (ftfont_info->ft_size);
942
943 free (font);
944 }
945
946 static int
947 ftfont_has_char (entity, c)
948 Lisp_Object entity;
949 int c;
950 {
951 Lisp_Object val;
952 FcPattern *pattern;
953 FcCharSet *charset;
954
955 val = AREF (entity, FONT_EXTRA_INDEX);
956 pattern = XSAVE_VALUE (val)->pointer;
957 if (FcPatternGetCharSet (pattern, FC_CHARSET, 0, &charset) != FcResultMatch)
958 return -1;
959 return (FcCharSetHasChar (charset, (FcChar32) c) == FcTrue);
960 }
961
962 static unsigned
963 ftfont_encode_char (font, c)
964 struct font *font;
965 int c;
966 {
967 struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
968 FT_Face ft_face = ftfont_info->ft_size->face;
969 FT_ULong charcode = c;
970 FT_UInt code = FT_Get_Char_Index (ft_face, charcode);
971
972 return (code > 0 ? code : FONT_INVALID_CODE);
973 }
974
975 static int
976 ftfont_text_extents (font, code, nglyphs, metrics)
977 struct font *font;
978 unsigned *code;
979 int nglyphs;
980 struct font_metrics *metrics;
981 {
982 struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
983 FT_Face ft_face = ftfont_info->ft_size->face;
984 int width = 0;
985 int i;
986
987 if (ftfont_info->ft_size != ft_face->size)
988 FT_Activate_Size (ftfont_info->ft_size);
989 if (metrics)
990 bzero (metrics, sizeof (struct font_metrics));
991 for (i = 0; i < nglyphs; i++)
992 {
993 if (FT_Load_Glyph (ft_face, code[i], FT_LOAD_DEFAULT) == 0)
994 {
995 FT_Glyph_Metrics *m = &ft_face->glyph->metrics;
996
997 if (metrics)
998 {
999 if (metrics->lbearing > width + (m->horiBearingX >> 6))
1000 metrics->lbearing = width + (m->horiBearingX >> 6);
1001 if (metrics->rbearing
1002 < width + ((m->horiBearingX + m->width) >> 6))
1003 metrics->rbearing
1004 = width + ((m->horiBearingX + m->width) >> 6);
1005 if (metrics->ascent < (m->horiBearingY >> 6))
1006 metrics->ascent = m->horiBearingY >> 6;
1007 if (metrics->descent > ((m->horiBearingY + m->height) >> 6))
1008 metrics->descent = (m->horiBearingY + m->height) >> 6;
1009 }
1010 width += m->horiAdvance >> 6;
1011 }
1012 else
1013 {
1014 width += font->font.space_width;
1015 }
1016 }
1017 if (metrics)
1018 metrics->width = width;
1019
1020 return width;
1021 }
1022
1023 static int
1024 ftfont_get_bitmap (font, code, bitmap, bits_per_pixel)
1025 struct font *font;
1026 unsigned code;
1027 struct font_bitmap *bitmap;
1028 int bits_per_pixel;
1029 {
1030 struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
1031 FT_Face ft_face = ftfont_info->ft_size->face;
1032 FT_Int32 load_flags = FT_LOAD_RENDER;
1033
1034 if (ftfont_info->ft_size != ft_face->size)
1035 FT_Activate_Size (ftfont_info->ft_size);
1036 if (bits_per_pixel == 1)
1037 {
1038 #ifdef FT_LOAD_TARGET_MONO
1039 load_flags |= FT_LOAD_TARGET_MONO;
1040 #else
1041 load_flags |= FT_LOAD_MONOCHROME;
1042 #endif
1043 }
1044 else if (bits_per_pixel != 8)
1045 /* We don't support such a rendering. */
1046 return -1;
1047
1048 if (FT_Load_Glyph (ft_face, code, load_flags) != 0)
1049 return -1;
1050 bitmap->bits_per_pixel
1051 = (ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO ? 1
1052 : ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY ? 8
1053 : ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD ? 8
1054 : ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD_V ? 8
1055 : -1);
1056 if (bitmap->bits_per_pixel < 0)
1057 /* We don't suport that kind of pixel mode. */
1058 return -1;
1059 bitmap->rows = ft_face->glyph->bitmap.rows;
1060 bitmap->width = ft_face->glyph->bitmap.width;
1061 bitmap->pitch = ft_face->glyph->bitmap.pitch;
1062 bitmap->buffer = ft_face->glyph->bitmap.buffer;
1063 bitmap->left = ft_face->glyph->bitmap_left;
1064 bitmap->top = ft_face->glyph->bitmap_top;
1065 bitmap->advance = ft_face->glyph->metrics.horiAdvance >> 6;
1066 bitmap->extra = NULL;
1067
1068 return 0;
1069 }
1070
1071 static int
1072 ftfont_anchor_point (font, code, index, x, y)
1073 struct font *font;
1074 unsigned code;
1075 int index;
1076 int *x, *y;
1077 {
1078 struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
1079 FT_Face ft_face = ftfont_info->ft_size->face;
1080
1081 if (ftfont_info->ft_size != ft_face->size)
1082 FT_Activate_Size (ftfont_info->ft_size);
1083 if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0)
1084 return -1;
1085 if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE)
1086 return -1;
1087 if (index >= ft_face->glyph->outline.n_points)
1088 return -1;
1089 *x = ft_face->glyph->outline.points[index].x;
1090 *y = ft_face->glyph->outline.points[index].y;
1091 return 0;
1092 }
1093
1094 #ifdef HAVE_LIBOTF
1095 #ifdef HAVE_M17N_FLT
1096
1097 struct MFLTFontFT
1098 {
1099 MFLTFont flt_font;
1100 struct font *font;
1101 FT_Face ft_face;
1102 OTF *otf;
1103 };
1104
1105 static int
1106 ftfont_get_glyph_id (font, gstring, from, to)
1107 MFLTFont *font;
1108 MFLTGlyphString *gstring;
1109 int from, to;
1110 {
1111 struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
1112 FT_Face ft_face = flt_font_ft->ft_face;
1113 MFLTGlyph *g;
1114
1115 for (g = gstring->glyphs + from; from < to; g++, from++)
1116 if (! g->encoded)
1117 {
1118 FT_UInt code = FT_Get_Char_Index (ft_face, g->code);
1119
1120 g->code = code > 0 ? code : FONT_INVALID_CODE;
1121 g->encoded = 1;
1122 }
1123 return 0;
1124 }
1125
1126 static int
1127 ftfont_get_metrics (font, gstring, from, to)
1128 MFLTFont *font;
1129 MFLTGlyphString *gstring;
1130 int from, to;
1131 {
1132 struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
1133 FT_Face ft_face = flt_font_ft->ft_face;
1134 MFLTGlyph *g;
1135
1136 for (g = gstring->glyphs + from; from < to; g++, from++)
1137 if (! g->measured)
1138 {
1139 if (g->code != FONT_INVALID_CODE)
1140 {
1141 FT_Glyph_Metrics *m;
1142
1143 if (FT_Load_Glyph (ft_face, g->code, FT_LOAD_DEFAULT) != 0)
1144 abort ();
1145 m = &ft_face->glyph->metrics;
1146
1147 g->lbearing = m->horiBearingX;
1148 g->rbearing = m->horiBearingX + m->width;
1149 g->ascent = m->horiBearingY;
1150 g->descent = m->height - m->horiBearingY;
1151 g->xadv = m->horiAdvance;
1152 }
1153 else
1154 {
1155 g->lbearing = 0;
1156 g->rbearing = g->xadv = flt_font_ft->font->font.space_width << 6;
1157 g->ascent = flt_font_ft->font->ascent << 6;
1158 g->descent = flt_font_ft->font->descent << 6;
1159 }
1160 g->yadv = 0;
1161 g->measured = 1;
1162 }
1163 return 0;
1164 }
1165
1166 static int
1167 ftfont_check_otf (MFLTFont *font, MFLTOtfSpec *spec)
1168 {
1169 struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
1170 OTF *otf = flt_font_ft->otf;
1171 OTF_Tag *tags;
1172 int i, n, negative;
1173
1174 for (i = 0; i < 2; i++)
1175 {
1176 if (! spec->features[i])
1177 continue;
1178 for (n = 0; spec->features[i][n]; n++);
1179 tags = alloca (sizeof (OTF_Tag) * n);
1180 for (n = 0, negative = 0; spec->features[i][n]; n++)
1181 {
1182 if (spec->features[i][n] == 0xFFFFFFFF)
1183 negative = 1;
1184 else if (negative)
1185 tags[n - 1] = spec->features[i][n] | 0x80000000;
1186 else
1187 tags[n] = spec->features[i][n];
1188 }
1189 if (n - negative > 0
1190 && OTF_check_features (otf, i == 0, spec->script, spec->langsys,
1191 tags, n - negative) != 1)
1192 return 0;
1193 }
1194 return 1;
1195 }
1196
1197 #define DEVICE_DELTA(table, size) \
1198 (((size) >= (table).StartSize && (size) <= (table).EndSize) \
1199 ? (table).DeltaValue[(size) - (table).StartSize] << 6 \
1200 : 0)
1201
1202 static void
1203 adjust_anchor (FT_Face ft_face, OTF_Anchor *anchor,
1204 unsigned code, int x_ppem, int y_ppem, int *x, int *y)
1205 {
1206 if (anchor->AnchorFormat == 2)
1207 {
1208 FT_Outline *outline;
1209 int ap = anchor->f.f1.AnchorPoint;
1210
1211 FT_Load_Glyph (ft_face, (FT_UInt) code, FT_LOAD_MONOCHROME);
1212 outline = &ft_face->glyph->outline;
1213 if (ap < outline->n_points)
1214 {
1215 *x = outline->points[ap].x << 6;
1216 *y = outline->points[ap].y << 6;
1217 }
1218 }
1219 else if (anchor->AnchorFormat == 3)
1220 {
1221 if (anchor->f.f2.XDeviceTable.offset)
1222 *x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, x_ppem);
1223 if (anchor->f.f2.YDeviceTable.offset)
1224 *y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, y_ppem);
1225 }
1226 }
1227
1228 static OTF_GlyphString otf_gstring;
1229
1230 static int
1231 ftfont_drive_otf (font, spec, in, from, to, out, adjustment)
1232 MFLTFont *font;
1233 MFLTOtfSpec *spec;
1234 MFLTGlyphString *in;
1235 int from, to;
1236 MFLTGlyphString *out;
1237 MFLTGlyphAdjustment *adjustment;
1238 {
1239 struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
1240 FT_Face ft_face = flt_font_ft->ft_face;
1241 OTF *otf = flt_font_ft->otf;
1242 int len = to - from;
1243 int i, j, gidx;
1244 OTF_Glyph *otfg;
1245 char script[5], *langsys = NULL;
1246 char *gsub_features = NULL, *gpos_features = NULL;
1247
1248 if (len == 0)
1249 return from;
1250 OTF_tag_name (spec->script, script);
1251 if (spec->langsys)
1252 {
1253 langsys = alloca (5);
1254 OTF_tag_name (spec->langsys, langsys);
1255 }
1256 for (i = 0; i < 2; i++)
1257 {
1258 char *p;
1259
1260 if (spec->features[i] && spec->features[i][1] != 0xFFFFFFFF)
1261 {
1262 for (j = 0; spec->features[i][j]; j++);
1263 if (i == 0)
1264 p = gsub_features = alloca (6 * j);
1265 else
1266 p = gpos_features = alloca (6 * j);
1267 for (j = 0; spec->features[i][j]; j++)
1268 {
1269 if (spec->features[i][j] == 0xFFFFFFFF)
1270 *p++ = '*', *p++ = ',';
1271 else
1272 {
1273 OTF_tag_name (spec->features[i][j], p);
1274 p[4] = ',';
1275 p += 5;
1276 }
1277 }
1278 *--p = '\0';
1279 }
1280 }
1281
1282 if (otf_gstring.size == 0)
1283 {
1284 otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
1285 otf_gstring.size = len;
1286 }
1287 else if (otf_gstring.size < len)
1288 {
1289 otf_gstring.glyphs = (OTF_Glyph *) realloc (otf_gstring.glyphs,
1290 sizeof (OTF_Glyph) * len);
1291 otf_gstring.size = len;
1292 }
1293 otf_gstring.used = len;
1294 memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
1295 for (i = 0; i < len; i++)
1296 {
1297 otf_gstring.glyphs[i].c = in->glyphs[from + i].c;
1298 otf_gstring.glyphs[i].glyph_id = in->glyphs[from + i].code;
1299 }
1300
1301 OTF_drive_gdef (otf, &otf_gstring);
1302 gidx = out->used;
1303
1304 if (gsub_features)
1305 {
1306 if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, gsub_features)
1307 < 0)
1308 goto simple_copy;
1309 if (out->allocated < out->used + otf_gstring.used)
1310 return -2;
1311 for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; )
1312 {
1313 OTF_Glyph *endg;
1314 MFLTGlyph *g;
1315 int min_from, max_to;
1316 int j;
1317
1318 g = out->glyphs + out->used;
1319 *g = in->glyphs[from + otfg->f.index.from];
1320 if (g->code != otfg->glyph_id)
1321 {
1322 g->c = 0;
1323 g->code = otfg->glyph_id;
1324 g->measured = 0;
1325 }
1326 out->used++;
1327 min_from = g->from;
1328 max_to = g->to;
1329 if (otfg->f.index.from < otfg->f.index.to)
1330 {
1331 /* OTFG substitutes multiple glyphs in IN. */
1332 for (j = from + otfg->f.index.from + 1;
1333 j <= from + otfg->f.index.to; j++)
1334 {
1335 if (min_from > in->glyphs[j].from)
1336 min_from = in->glyphs[j].from;
1337 if (max_to < in->glyphs[j].to)
1338 max_to = in->glyphs[j].to;
1339 }
1340 g->from = min_from;
1341 g->to = max_to;
1342 }
1343 for (i++, otfg++; (i < otf_gstring.used
1344 && otfg->f.index.from == otfg[-1].f.index.from);
1345 i++, otfg++)
1346 {
1347 g = out->glyphs + out->used;
1348 *g = in->glyphs[from + otfg->f.index.to];
1349 if (g->code != otfg->glyph_id)
1350 {
1351 g->c = 0;
1352 g->code = otfg->glyph_id;
1353 g->measured = 0;
1354 }
1355 out->used++;
1356 }
1357 }
1358 }
1359 else
1360 {
1361 if (out->allocated < out->used + len)
1362 return -2;
1363 for (i = 0; i < len; i++)
1364 out->glyphs[out->used++] = in->glyphs[from + i];
1365 }
1366
1367 if (gpos_features)
1368 {
1369 MFLTGlyph *base = NULL, *mark = NULL, *g;
1370 int x_ppem, y_ppem, x_scale, y_scale;
1371
1372 if (OTF_drive_gpos (otf, &otf_gstring, script, langsys, gpos_features)
1373 < 0)
1374 return to;
1375
1376 x_ppem = ft_face->size->metrics.x_ppem;
1377 y_ppem = ft_face->size->metrics.y_ppem;
1378 x_scale = ft_face->size->metrics.x_scale;
1379 y_scale = ft_face->size->metrics.y_scale;
1380
1381 for (i = 0, otfg = otf_gstring.glyphs, g = out->glyphs + gidx;
1382 i < otf_gstring.used; i++, otfg++, g++)
1383 {
1384 MFLTGlyph *prev;
1385
1386 if (! otfg->glyph_id)
1387 continue;
1388 switch (otfg->positioning_type)
1389 {
1390 case 0:
1391 break;
1392 case 1: /* Single */
1393 case 2: /* Pair */
1394 {
1395 int format = otfg->f.f1.format;
1396
1397 if (format & OTF_XPlacement)
1398 adjustment[i].xoff
1399 = otfg->f.f1.value->XPlacement * x_scale / 0x10000;
1400 if (format & OTF_XPlaDevice)
1401 adjustment[i].xoff
1402 += DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
1403 if (format & OTF_YPlacement)
1404 adjustment[i].yoff
1405 = - (otfg->f.f1.value->YPlacement * y_scale / 0x10000);
1406 if (format & OTF_YPlaDevice)
1407 adjustment[i].yoff
1408 -= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
1409 if (format & OTF_XAdvance)
1410 adjustment[i].xadv
1411 += otfg->f.f1.value->XAdvance * x_scale / 0x10000;
1412 if (format & OTF_XAdvDevice)
1413 adjustment[i].xadv
1414 += DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
1415 if (format & OTF_YAdvance)
1416 adjustment[i].yadv
1417 += otfg->f.f1.value->YAdvance * y_scale / 0x10000;
1418 if (format & OTF_YAdvDevice)
1419 adjustment[i].yadv
1420 += DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
1421 adjustment[i].set = 1;
1422 }
1423 break;
1424 case 3: /* Cursive */
1425 /* Not yet supported. */
1426 break;
1427 case 4: /* Mark-to-Base */
1428 case 5: /* Mark-to-Ligature */
1429 if (! base)
1430 break;
1431 prev = base;
1432 goto label_adjust_anchor;
1433 default: /* i.e. case 6 Mark-to-Mark */
1434 if (! mark)
1435 break;
1436 prev = mark;
1437
1438 label_adjust_anchor:
1439 {
1440 int base_x, base_y, mark_x, mark_y;
1441 int this_from, this_to;
1442
1443 base_x = otfg->f.f4.base_anchor->XCoordinate * x_scale / 0x10000;
1444 base_y = otfg->f.f4.base_anchor->YCoordinate * y_scale / 0x10000;
1445 mark_x = otfg->f.f4.mark_anchor->XCoordinate * x_scale / 0x10000;
1446 mark_y = otfg->f.f4.mark_anchor->YCoordinate * y_scale / 0x10000;;
1447
1448 if (otfg->f.f4.base_anchor->AnchorFormat != 1)
1449 adjust_anchor (ft_face, otfg->f.f4.base_anchor,
1450 prev->code, x_ppem, y_ppem, &base_x, &base_y);
1451 if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
1452 adjust_anchor (ft_face, otfg->f.f4.mark_anchor, g->code,
1453 x_ppem, y_ppem, &mark_x, &mark_y);
1454 adjustment[i].xoff = (base_x - mark_x);
1455 adjustment[i].yoff = - (base_y - mark_y);
1456 adjustment[i].back = (g - prev);
1457 adjustment[i].xadv = 0;
1458 adjustment[i].advance_is_absolute = 1;
1459 adjustment[i].set = 1;
1460 this_from = g->from;
1461 this_to = g->to;
1462 for (j = 0; prev + j < g; j++)
1463 {
1464 if (this_from > prev[j].from)
1465 this_from = prev[j].from;
1466 if (this_to < prev[j].to)
1467 this_to = prev[j].to;
1468 }
1469 for (; prev <= g; prev++)
1470 {
1471 prev->from = this_from;
1472 prev->to = this_to;
1473 }
1474 }
1475 }
1476 if (otfg->GlyphClass == OTF_GlyphClass0)
1477 base = mark = g;
1478 else if (otfg->GlyphClass == OTF_GlyphClassMark)
1479 mark = g;
1480 else
1481 base = g;
1482 }
1483 }
1484 return to;
1485
1486 simple_copy:
1487 if (out->allocated < out->used + len)
1488 return -2;
1489 font->get_metrics (font, in, from, to);
1490 memcpy (out->glyphs + out->used, in->glyphs + from,
1491 sizeof (MFLTGlyph) * len);
1492 out->used += len;
1493 return to;
1494 }
1495
1496 static MFLTGlyphString gstring;
1497
1498 static int m17n_flt_initialized;
1499
1500 extern Lisp_Object QCfamily;
1501
1502 Lisp_Object
1503 ftfont_shape_by_flt (lgstring, font, ft_face, otf)
1504 Lisp_Object lgstring;
1505 struct font *font;
1506 FT_Face ft_face;
1507 OTF *otf;
1508 {
1509 EMACS_UINT len = LGSTRING_LENGTH (lgstring);
1510 EMACS_UINT i;
1511 struct MFLTFontFT flt_font_ft;
1512
1513 if (! m17n_flt_initialized)
1514 {
1515 M17N_INIT ();
1516 m17n_flt_initialized = 1;
1517 }
1518
1519 for (i = 0; i < len; i++)
1520 if (NILP (LGSTRING_GLYPH (lgstring, i)))
1521 break;
1522 len = i;
1523
1524 if (gstring.allocated == 0)
1525 {
1526 gstring.allocated = len * 2;
1527 gstring.glyph_size = sizeof (MFLTGlyph);
1528 gstring.glyphs = malloc (sizeof (MFLTGlyph) * gstring.allocated);
1529 }
1530 else if (gstring.allocated < len * 2)
1531 {
1532 gstring.allocated = len * 2;
1533 gstring.glyphs = realloc (gstring.glyphs,
1534 sizeof (MFLTGlyph) * gstring.allocated);
1535 }
1536 for (i = 0; i < len; i++)
1537 gstring.glyphs[i].c = LGLYPH_CHAR (LGSTRING_GLYPH (lgstring, i));
1538 gstring.used = len;
1539 gstring.r2l = 0;
1540
1541 {
1542 Lisp_Object family = Ffont_get (LGSTRING_FONT (lgstring), QCfamily);
1543
1544 if (NILP (family))
1545 flt_font_ft.flt_font.family = Mnil;
1546 else
1547 flt_font_ft.flt_font.family = msymbol (SDATA (SYMBOL_NAME (family)));
1548 }
1549 flt_font_ft.flt_font.x_ppem = ft_face->size->metrics.x_ppem;
1550 flt_font_ft.flt_font.y_ppem = ft_face->size->metrics.y_ppem;
1551 flt_font_ft.flt_font.get_glyph_id = ftfont_get_glyph_id;
1552 flt_font_ft.flt_font.get_metrics = ftfont_get_metrics;
1553 flt_font_ft.flt_font.check_otf = ftfont_check_otf;
1554 flt_font_ft.flt_font.drive_otf = ftfont_drive_otf;
1555 flt_font_ft.flt_font.internal = NULL;
1556 flt_font_ft.font = font;
1557 flt_font_ft.ft_face = ft_face;
1558 flt_font_ft.otf = otf;
1559 for (i = 0; i < 3; i++)
1560 {
1561 int result = mflt_run (&gstring, 0, len, &flt_font_ft.flt_font, NULL);
1562 if (result != -2)
1563 break;
1564 gstring.allocated += gstring.allocated;
1565 gstring.glyphs = realloc (gstring.glyphs,
1566 sizeof (MFLTGlyph) * gstring.allocated);
1567 }
1568 if (gstring.used > LGSTRING_LENGTH (lgstring))
1569 return Qnil;
1570 for (i = 0; i < gstring.used; i++)
1571 {
1572 MFLTGlyph *g = gstring.glyphs + i;
1573
1574 g->from = LGLYPH_FROM (LGSTRING_GLYPH (lgstring, g->from));
1575 g->to = LGLYPH_TO (LGSTRING_GLYPH (lgstring, g->to));
1576 }
1577
1578 for (i = 0; i < gstring.used; i++)
1579 {
1580 Lisp_Object lglyph = LGSTRING_GLYPH (lgstring, i);
1581 MFLTGlyph *g = gstring.glyphs + i;
1582
1583 if (NILP (lglyph))
1584 {
1585 lglyph = Fmake_vector (make_number (LGLYPH_SIZE), Qnil);
1586 LGSTRING_SET_GLYPH (lgstring, i, lglyph);
1587 }
1588 LGLYPH_SET_FROM (lglyph, g->from);
1589 LGLYPH_SET_TO (lglyph, g->to);
1590 LGLYPH_SET_CHAR (lglyph, g->c);
1591 LGLYPH_SET_CODE (lglyph, g->code);
1592 LGLYPH_SET_WIDTH (lglyph, g->xadv >> 6);
1593 LGLYPH_SET_LBEARING (lglyph, g->lbearing >> 6);
1594 LGLYPH_SET_RBEARING (lglyph, g->rbearing >> 6);
1595 LGLYPH_SET_ASCENT (lglyph, g->ascent >> 6);
1596 LGLYPH_SET_DESCENT (lglyph, g->descent >> 6);
1597 if (g->adjusted)
1598 {
1599 Lisp_Object vec;
1600
1601 vec = Fmake_vector (make_number (3), Qnil);
1602 ASET (vec, 0, make_number (g->xoff >> 6));
1603 ASET (vec, 1, make_number (g->yoff >> 6));
1604 ASET (vec, 2, make_number (g->xadv >> 6));
1605 LGLYPH_SET_ADJUSTMENT (lglyph, vec);
1606 }
1607 }
1608 return make_number (i);
1609 }
1610
1611 Lisp_Object
1612 ftfont_shape (lgstring)
1613 Lisp_Object lgstring;
1614 {
1615 struct font *font;
1616 struct ftfont_info *ftfont_info;
1617
1618 CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font);
1619 ftfont_info = (struct ftfont_info *) font;
1620 if (! ftfont_info->maybe_otf)
1621 return 0;
1622 if (! ftfont_info->otf)
1623 {
1624 OTF *otf = OTF_open_ft_face (ftfont_info->ft_size->face);
1625
1626 if (! otf || OTF_get_table (otf, "head") < 0)
1627 {
1628 if (otf)
1629 OTF_close (otf);
1630 ftfont_info->maybe_otf = 0;
1631 return 0;
1632 }
1633
1634 ftfont_info->otf = otf;
1635 }
1636
1637 return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
1638 ftfont_info->otf);
1639 }
1640
1641 #endif /* HAVE_M17N_FLT */
1642 #endif /* HAVE_LIBOTF */
1643
1644 Lisp_Object
1645 ftfont_font_format (FcPattern *pattern)
1646 {
1647 FcChar8 *str;
1648
1649 #ifdef FC_FONTFORMAT
1650 if (FcPatternGetString (pattern, FC_FONTFORMAT, 0, &str) != FcResultMatch)
1651 return Qnil;
1652 if (strcmp ((char *) str, "TrueType") == 0)
1653 return intern ("truetype");
1654 if (strcmp ((char *) str, "Type 1") == 0)
1655 return intern ("type1");
1656 if (strcmp ((char *) str, "PCF") == 0)
1657 return intern ("pcf");
1658 if (strcmp ((char *) str, "BDF") == 0)
1659 return intern ("bdf");
1660 #else /* not FC_FONTFORMAT */
1661 if (FcPatternGetString (pattern, FC_FILE, 0, &str) != FcResultMatch)
1662 return Qnil;
1663 if (strcasestr ((char *) str, ".ttf") == 0)
1664 return intern ("truetype");
1665 if (strcasestr ((char *) str, "pfb") == 0)
1666 return intern ("type1");
1667 if (strcasestr ((char *) str, "pcf") == 0)
1668 return intern ("pcf");
1669 if (strcasestr ((char *) str, "bdf") == 0)
1670 return intern ("bdf");
1671 #endif /* not FC_FONTFORMAT */
1672 return intern ("unknown");
1673 }
1674
1675 \f
1676 void
1677 syms_of_ftfont ()
1678 {
1679 DEFSYM (Qfreetype, "freetype");
1680 DEFSYM (Qmonospace, "monospace");
1681 DEFSYM (Qsans_serif, "sans-serif");
1682 DEFSYM (Qserif, "serif");
1683 DEFSYM (Qmono, "mono");
1684 DEFSYM (Qsans, "sans");
1685 DEFSYM (Qsans__serif, "sans serif");
1686
1687 staticpro (&freetype_font_cache);
1688 freetype_font_cache = Fcons (Qt, Qnil);
1689
1690 staticpro (&ftfont_generic_family_list);
1691 ftfont_generic_family_list
1692 = Fcons (Fcons (Qmonospace, Qt),
1693 Fcons (Fcons (Qsans_serif, Qt),
1694 Fcons (Fcons (Qsans, Qt), Qnil)));
1695
1696 ftfont_driver.type = Qfreetype;
1697 register_font_driver (&ftfont_driver, NULL);
1698 }
1699
1700 /* arch-tag: 7cfa432c-33a6-4988-83d2-a82ed8604aca
1701 (do not change this comment) */
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