ftfont.c 52 KB
Newer Older
Kenichi Handa's avatar
Kenichi Handa committed
1
/* ftfont.c -- FreeType font driver.
2 3
   Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
   Copyright (C) 2006, 2007, 2008
Kenichi Handa's avatar
Kenichi Handa committed
4 5 6 7 8
     National Institute of Advanced Industrial Science and Technology (AIST)
     Registration Number H13PRO009

This file is part of GNU Emacs.

9
GNU Emacs is free software: you can redistribute it and/or modify
Kenichi Handa's avatar
Kenichi Handa committed
10
it under the terms of the GNU General Public License as published by
11 12
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Kenichi Handa's avatar
Kenichi Handa committed
13 14 15 16 17 18 19

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
20
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Kenichi Handa's avatar
Kenichi Handa committed
21 22 23 24 25 26 27 28 29 30 31 32 33 34

#include <config.h>
#include <stdio.h>

#include <fontconfig/fontconfig.h>
#include <fontconfig/fcfreetype.h>

#include "lisp.h"
#include "dispextern.h"
#include "frame.h"
#include "blockinput.h"
#include "character.h"
#include "charset.h"
#include "coding.h"
Kenichi Handa's avatar
Kenichi Handa committed
35
#include "composite.h"
Kenichi Handa's avatar
Kenichi Handa committed
36 37
#include "fontset.h"
#include "font.h"
38
#include "ftfont.h"
Kenichi Handa's avatar
Kenichi Handa committed
39

40
/* Symbolic type of this font-driver.  */
Kenichi Handa's avatar
Kenichi Handa committed
41 42
Lisp_Object Qfreetype;

43 44 45
/* Fontconfig's generic families and their aliases.  */
static Lisp_Object Qmonospace, Qsans_serif, Qserif, Qmono, Qsans, Qsans__serif;

Juanma Barranquero's avatar
Juanma Barranquero committed
46
/* Flag to tell if FcInit is already called or not.  */
Kenichi Handa's avatar
Kenichi Handa committed
47
static int fc_initialized;
48 49

/* Handle to a FreeType library instance.  */
Kenichi Handa's avatar
Kenichi Handa committed
50 51
static FT_Library ft_library;

52
/* Cache for FreeType fonts.  */
Kenichi Handa's avatar
Kenichi Handa committed
53 54
static Lisp_Object freetype_font_cache;

55
/* Cache for FT_Face and FcCharSet. */
Kenichi Handa's avatar
Kenichi Handa committed
56
static Lisp_Object ft_face_cache;
Kenichi Handa's avatar
Kenichi Handa committed
57 58 59 60 61 62 63

/* The actual structure for FreeType font that can be casted to struct
   font.  */

struct ftfont_info
{
  struct font font;
64
#ifdef HAVE_LIBOTF
65 66
  /* The following three members must be here in this order to be
     compatible with struct xftfont_info (in xftfont.c).  */
67 68 69
  int maybe_otf;	/* Flag to tell if this may be OTF or not.  */
  OTF *otf;
#endif	/* HAVE_LIBOTF */
70 71
  FT_Size ft_size;
  int index;
Kenichi Handa's avatar
Kenichi Handa committed
72 73
};

74
static Lisp_Object ftfont_pattern_entity P_ ((FcPattern *, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
75

76 77
static Lisp_Object ftfont_resolve_generic_family P_ ((Lisp_Object,
						      FcPattern *));
78 79
static Lisp_Object ftfont_lookup_cache P_ ((Lisp_Object, int));

80
Lisp_Object ftfont_font_format P_ ((FcPattern *, Lisp_Object));
81 82 83

#define SYMBOL_FcChar8(SYM) (FcChar8 *) SDATA (SYMBOL_NAME (SYM))

Kenichi Handa's avatar
Kenichi Handa committed
84
static struct
Kenichi Handa's avatar
Kenichi Handa committed
85
{
86
  /* registry name */
Kenichi Handa's avatar
Kenichi Handa committed
87 88 89
  char *name;
  /* characters to distinguish the charset from the others */
  int uniquifier[6];
90 91
  /* additional constraint by language */
  char *lang;
Kenichi Handa's avatar
Kenichi Handa committed
92 93 94
  /* set on demand */
  FcCharSet *fc_charset;
} fc_charset_table[] =
95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
  { { "iso8859-1", { 0x00A0, 0x00A1, 0x00B4, 0x00BC, 0x00D0 } },
    { "iso8859-2", { 0x00A0, 0x010E }},
    { "iso8859-3", { 0x00A0, 0x0108 }},
    { "iso8859-4", { 0x00A0, 0x00AF, 0x0128, 0x0156, 0x02C7 }},
    { "iso8859-5", { 0x00A0, 0x0401 }},
    { "iso8859-6", { 0x00A0, 0x060C }},
    { "iso8859-7", { 0x00A0, 0x0384 }},
    { "iso8859-8", { 0x00A0, 0x05D0 }},
    { "iso8859-9", { 0x00A0, 0x00A1, 0x00BC, 0x011E }},
    { "iso8859-10", { 0x00A0, 0x00D0, 0x0128, 0x2015 }},
    { "iso8859-11", { 0x00A0, 0x0E01 }},
    { "iso8859-13", { 0x00A0, 0x201C }},
    { "iso8859-14", { 0x00A0, 0x0174 }},
    { "iso8859-15", { 0x00A0, 0x00A1, 0x00D0, 0x0152 }},
    { "iso8859-16", { 0x00A0, 0x0218}},
    { "gb2312.1980-0", { 0x4E13 }, "zh-cn"},
    { "big5-0", { 0xF6B1 }, "zh-tw" },
    { "jisx0208.1983-0", { 0x4E55 }, "ja"},
    { "ksc5601.1985-0", { 0xAC00 }, "ko"},
    { "cns11643.1992-1", { 0xFE32 }, "zh-tw"},
    { "cns11643.1992-2", { 0x4E33, 0x7934 }},
    { "cns11643.1992-3", { 0x201A9 }},
    { "cns11643.1992-4", { 0x20057 }},
    { "cns11643.1992-5", { 0x20000 }},
    { "cns11643.1992-6", { 0x20003 }},
    { "cns11643.1992-7", { 0x20055 }},
    { "gbk-0", { 0x4E06 }, "zh-cn"},
    { "jisx0212.1990-0", { 0x4E44 }},
    { "jisx0213.2000-1", { 0xFA10 }, "ja"},
    { "jisx0213.2000-2", { 0xFA49 }},
    { "jisx0213.2004-1", { 0x20B9F }},
    { "viscii1.1-1", { 0x1EA0, 0x1EAE, 0x1ED2 }, "vi"},
    { "tis620.2529-1", { 0x0E01 }, "th"},
128 129
    { "windows-1251", { 0x0401, 0x0490 }, "ru"},
    { "koi8-r", { 0x0401, 0x2219 }, "ru"},
130
    { "mulelao-1", { 0x0E81 }, "lo"},
Kenichi Handa's avatar
Kenichi Handa committed
131 132
    { NULL }
  };
Kenichi Handa's avatar
Kenichi Handa committed
133

134 135
extern Lisp_Object Qc, Qm, Qp, Qd;

136
static Lisp_Object
137
ftfont_pattern_entity (p, extra)
138
     FcPattern *p;
139
     Lisp_Object extra;
140 141
{
  Lisp_Object entity;
Kenichi Handa's avatar
Kenichi Handa committed
142
  char *file, *str;
143
  int index;
144 145
  int numeric;
  double dbl;
146
  FcBool b;
147

Kenichi Handa's avatar
Kenichi Handa committed
148
  if (FcPatternGetString (p, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
149
    return Qnil;
150 151
  if (FcPatternGetInteger (p, FC_INDEX, 0, &index) != FcResultMatch)
    return Qnil;
152

153
  entity = font_make_entity ();
154 155

  ASET (entity, FONT_TYPE_INDEX, Qfreetype);
156
  ASET (entity, FONT_REGISTRY_INDEX, Qiso10646_1);
157

Kenichi Handa's avatar
Kenichi Handa committed
158
  if (FcPatternGetString (p, FC_FOUNDRY, 0, (FcChar8 **) &str) == FcResultMatch)
159
    ASET (entity, FONT_FOUNDRY_INDEX, font_intern_prop (str, strlen (str), 1));
Kenichi Handa's avatar
Kenichi Handa committed
160
  if (FcPatternGetString (p, FC_FAMILY, 0, (FcChar8 **) &str) == FcResultMatch)
161
    ASET (entity, FONT_FAMILY_INDEX, font_intern_prop (str, strlen (str), 1));
162
  if (FcPatternGetInteger (p, FC_WEIGHT, 0, &numeric) == FcResultMatch)
163
    {
164 165 166
      if (numeric >= FC_WEIGHT_REGULAR && numeric < FC_WEIGHT_MEDIUM)
	numeric = FC_WEIGHT_MEDIUM;
      FONT_SET_STYLE (entity, FONT_WEIGHT_INDEX, make_number (numeric));
167
    }
168
  if (FcPatternGetInteger (p, FC_SLANT, 0, &numeric) == FcResultMatch)
169 170 171 172
    {
      numeric += 100;
      FONT_SET_STYLE (entity, FONT_SLANT_INDEX, make_number (numeric));
    }
173
  if (FcPatternGetInteger (p, FC_WIDTH, 0, &numeric) == FcResultMatch)
174 175 176
    {
      FONT_SET_STYLE (entity, FONT_WIDTH_INDEX, make_number (numeric));
    }
177 178 179 180
  if (FcPatternGetDouble (p, FC_PIXEL_SIZE, 0, &dbl) == FcResultMatch)
    ASET (entity, FONT_SIZE_INDEX, make_number (dbl));
  else
    ASET (entity, FONT_SIZE_INDEX, make_number (0));
181 182 183 184 185 186 187 188 189 190
  if (FcPatternGetInteger (p, FC_SPACING, 0, &numeric) == FcResultMatch)
    ASET (entity, FONT_SPACING_INDEX, make_number (numeric));
  if (FcPatternGetDouble (p, FC_DPI, 0, &dbl) == FcResultMatch)
    {
      int dpi = dbl;
      ASET (entity, FONT_DPI_INDEX, make_number (dpi));
    }
  if (FcPatternGetBool (p, FC_SCALABLE, 0, &b) == FcResultMatch
      && b == FcTrue)
    ASET (entity, FONT_AVGWIDTH_INDEX, make_number (0));
191

192
  ASET (entity, FONT_EXTRA_INDEX, Fcopy_sequence (extra));
Kenichi Handa's avatar
Kenichi Handa committed
193 194 195
  font_put_extra (entity, QCfont_entity,
		  Fcons (make_unibyte_string ((char *) file,
					      strlen ((char *) file)),
196
			 make_number (index)));
197 198 199
  return entity;
}

200

201 202 203
static Lisp_Object ftfont_generic_family_list;

static Lisp_Object
204
ftfont_resolve_generic_family (family, pattern)
205
     Lisp_Object family;
206
     FcPattern *pattern;
207
{
208
  Lisp_Object slot;
209
  FcPattern *match;
210
  FcResult result;
Kenichi Handa's avatar
Kenichi Handa committed
211
  FcLangSet *langset;
212

213
  family = Fintern (Fdowncase (SYMBOL_NAME (family)), Qnil);
214 215 216 217 218 219
  if (EQ (family, Qmono))
    family = Qmonospace;
  else if (EQ (family, Qsans) || EQ (family, Qsans__serif))
    family = Qsans_serif;
  slot = assq_no_quit (family, ftfont_generic_family_list);
  if (! CONSP (slot))
220
    return Qnil;
221 222
  if (! EQ (XCDR (slot), Qt))
    return XCDR (slot);
223
  pattern = FcPatternDuplicate (pattern);
224 225
  if (! pattern)
    goto err;
226
  FcPatternDel (pattern, FC_FOUNDRY);
227 228
  FcPatternDel (pattern, FC_FAMILY);
  FcPatternAddString (pattern, FC_FAMILY, SYMBOL_FcChar8 (family));
Kenichi Handa's avatar
Kenichi Handa committed
229 230 231 232 233 234 235 236
  if (FcPatternGetLangSet (pattern, FC_LANG, 0, &langset) != FcResultMatch)
    {
      /* This is to avoid the effect of locale.  */
      langset = FcLangSetCreate ();
      FcLangSetAdd (langset, "en");
      FcPatternAddLangSet (pattern, FC_LANG, langset);
      FcLangSetDestroy (langset);
    }
237
  FcConfigSubstitute (NULL, pattern, FcMatchPattern);
238 239 240
  FcDefaultSubstitute (pattern);
  match = FcFontMatch (NULL, pattern, &result);
  if (match)
241
    {
242 243 244 245
      FcChar8 *fam;

      if (FcPatternGetString (match, FC_FAMILY, 0, &fam) == FcResultMatch)
	family = intern ((char *) fam);
246
    }
247 248 249
  else
    family = Qnil;
  XSETCDR (slot, family);
250
 err:
251
  if (match) FcPatternDestroy (match);
252
  if (pattern) FcPatternDestroy (pattern);
253
  return family;
254 255
}

256 257 258 259 260 261 262 263 264 265
struct ftfont_cache_data
{
  FT_Face ft_face;
  FcCharSet *fc_charset;
};

static Lisp_Object
ftfont_lookup_cache (key, for_face)
     Lisp_Object key;
     int for_face;
Kenichi Handa's avatar
Kenichi Handa committed
266 267
{
  Lisp_Object cache, val;
268
  struct ftfont_cache_data *cache_data;
Kenichi Handa's avatar
Kenichi Handa committed
269

270
  cache = assoc_no_quit (key, ft_face_cache);
Kenichi Handa's avatar
Kenichi Handa committed
271 272
  if (NILP (cache))
    {
273 274 275
      cache_data = xmalloc (sizeof (struct ftfont_cache_data));
      cache_data->ft_face = NULL;
      cache_data->fc_charset = NULL;
Kenichi Handa's avatar
Kenichi Handa committed
276
      val = make_save_value (NULL, 0);
277 278 279
      XSAVE_VALUE (val)->integer = 0;
      XSAVE_VALUE (val)->pointer = cache_data;
      cache = Fcons (key, val);
Kenichi Handa's avatar
Kenichi Handa committed
280 281 282 283
      ft_face_cache = Fcons (cache, ft_face_cache);
    }
  else
    {
284 285 286 287 288 289 290
      val = XCDR (cache);
      cache_data = XSAVE_VALUE (val)->pointer;
    }
  if (for_face ? ! cache_data->ft_face : ! cache_data->fc_charset)
    {
      char *filename = (char *) SDATA (XCAR (key));
      int index = XINT (XCDR (key));
Kenichi Handa's avatar
Kenichi Handa committed
291

292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
      if (for_face)
	{
	  if (! ft_library
	      && FT_Init_FreeType (&ft_library) != 0)
	    return Qnil;
	  if (FT_New_Face (ft_library, filename, index, &cache_data->ft_face)
	      != 0)
	    return Qnil;
	}
      else
	{
	  FcPattern *pat;
	  FcFontSet *fontset;
	  FcObjectSet *objset;
	  FcCharSet *charset;

	  pat = FcPatternBuild (0, FC_FILE, FcTypeString, (FcChar8 *) filename,
				FC_INDEX, FcTypeInteger, index, NULL);
	  objset = FcObjectSetBuild (FC_CHARSET, NULL);
	  fontset = FcFontList (NULL, pat, objset);
	  xassert (fontset && fontset->nfont > 0);
	  if (FcPatternGetCharSet (fontset->fonts[0], FC_CHARSET, 0, &charset)
	      == FcResultMatch)
	    cache_data->fc_charset = FcCharSetCopy (charset);
	  else
	    cache_data->fc_charset = FcCharSetCreate ();
	  FcFontSetDestroy (fontset);
	  FcObjectSetDestroy (objset);
	  FcPatternDestroy (pat);
	}
Kenichi Handa's avatar
Kenichi Handa committed
322 323 324 325
    }
  return cache;
}

326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365
FcCharSet *
ftfont_get_fc_charset (entity)
     Lisp_Object entity;
{
  Lisp_Object val, cache;
  struct ftfont_cache_data *cache_data;

  val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX));
  xassert (CONSP (val));
  val = XCDR (val);
  cache = ftfont_lookup_cache (val, 0);
  val = XCDR (cache);
  cache_data = XSAVE_VALUE (val)->pointer;
  return cache_data->fc_charset;
}

#ifdef HAVE_LIBOTF
static OTF *
ftfont_get_otf (ftfont_info)
     struct ftfont_info *ftfont_info;
{
  OTF *otf;

  if (ftfont_info->otf)
    return ftfont_info->otf;
  if (! ftfont_info->maybe_otf)
    return NULL;
  otf = OTF_open_ft_face (ftfont_info->ft_size->face);
  if (! otf || OTF_get_table (otf, "head") < 0)
    {
      if (otf)
	OTF_close (otf);
      ftfont_info->maybe_otf = 0;
      return NULL;
    }
  ftfont_info->otf = otf;
  return otf;
}
#endif	/* HAVE_LIBOTF */

366
static Lisp_Object ftfont_get_cache P_ ((FRAME_PTR));
Kenichi Handa's avatar
Kenichi Handa committed
367
static Lisp_Object ftfont_list P_ ((Lisp_Object, Lisp_Object));
368
static Lisp_Object ftfont_match P_ ((Lisp_Object, Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
369
static Lisp_Object ftfont_list_family P_ ((Lisp_Object));
370
static Lisp_Object ftfont_open P_ ((FRAME_PTR, Lisp_Object, int));
Kenichi Handa's avatar
Kenichi Handa committed
371 372 373 374 375 376 377 378 379
static void ftfont_close P_ ((FRAME_PTR, struct font *));
static int ftfont_has_char P_ ((Lisp_Object, int));
static unsigned ftfont_encode_char P_ ((struct font *, int));
static int ftfont_text_extents P_ ((struct font *, unsigned *, int,
				    struct font_metrics *));
static int ftfont_get_bitmap P_ ((struct font *, unsigned,
				  struct font_bitmap *, int));
static int ftfont_anchor_point P_ ((struct font *, unsigned, int,
				    int *, int *));
380
static Lisp_Object ftfont_otf_capability P_ ((struct font *));
381
static Lisp_Object ftfont_shape P_ ((Lisp_Object));
Kenichi Handa's avatar
Kenichi Handa committed
382 383 384

struct font_driver ftfont_driver =
  {
385
    0,				/* Qfreetype */
386
    0,				/* case insensitive */
Kenichi Handa's avatar
Kenichi Handa committed
387 388
    ftfont_get_cache,
    ftfont_list,
389
    ftfont_match,
Kenichi Handa's avatar
Kenichi Handa committed
390
    ftfont_list_family,
391
    NULL,
Kenichi Handa's avatar
Kenichi Handa committed
392 393 394 395 396 397 398 399 400 401 402 403 404 405 406
    ftfont_open,
    ftfont_close,
    /* We can't draw a text without device dependent functions.  */
    NULL,
    NULL,
    ftfont_has_char,
    ftfont_encode_char,
    ftfont_text_extents,
    /* We can't draw a text without device dependent functions.  */
    NULL,
    ftfont_get_bitmap,
    NULL,
    NULL,
    NULL,
    ftfont_anchor_point,
407 408 409
#ifdef HAVE_LIBOTF
    ftfont_otf_capability,
#else  /* not HAVE_LIBOTF */
Kenichi Handa's avatar
Kenichi Handa committed
410
    NULL,
411
#endif	/* not HAVE_LIBOTF */
Kenichi Handa's avatar
Kenichi Handa committed
412
    NULL,
413 414
    NULL,
    NULL,
415
#if defined (HAVE_M17N_FLT) && defined (HAVE_LIBOTF)
416
    ftfont_shape
417
#else  /* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
Kenichi Handa's avatar
Kenichi Handa committed
418
    NULL
419
#endif	/* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
Kenichi Handa's avatar
Kenichi Handa committed
420 421 422 423 424
  };

extern Lisp_Object QCname;

static Lisp_Object
425 426
ftfont_get_cache (f)
     FRAME_PTR f;
Kenichi Handa's avatar
Kenichi Handa committed
427 428 429 430
{
  return freetype_font_cache;
}

Kenichi Handa's avatar
Kenichi Handa committed
431 432 433 434
static int
ftfont_get_charset (registry)
     Lisp_Object registry;
{
435 436 437
  char *str = (char *) SDATA (SYMBOL_NAME (registry));
  char *re = alloca (SBYTES (SYMBOL_NAME (registry)) * 2 + 1);
  Lisp_Object regexp;
Kenichi Handa's avatar
Kenichi Handa committed
438 439
  int i, j;

440 441 442 443 444 445 446 447 448 449 450 451
  for (i = j = 0; i < SBYTES (SYMBOL_NAME (registry)); i++, j++)
    {
      if (str[i] == '.')
	re[j++] = '\\';
      else if (str[i] == '*')
	re[j++] = '.';
      re[j] = str[i];
      if (re[j] == '?')
	re[j] = '.';
    }
  re[j] = '\0';
  regexp = make_unibyte_string (re, j);
Kenichi Handa's avatar
Kenichi Handa committed
452
  for (i = 0; fc_charset_table[i].name; i++)
453
    if (fast_c_string_match_ignore_case (regexp, fc_charset_table[i].name) >= 0)
Kenichi Handa's avatar
Kenichi Handa committed
454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469
      break;
  if (! fc_charset_table[i].name)
    return -1;
  if (! fc_charset_table[i].fc_charset)
    {
      FcCharSet *charset = FcCharSetCreate ();
      int *uniquifier = fc_charset_table[i].uniquifier;

      if (! charset)
	return -1;
      for (j = 0; uniquifier[j]; j++)
	if (! FcCharSetAddChar (charset, uniquifier[j]))
	  {
	    FcCharSetDestroy (charset);
	    return -1;
	  }
Juanma Barranquero's avatar
Juanma Barranquero committed
470
      fc_charset_table[i].fc_charset = charset;
Kenichi Handa's avatar
Kenichi Handa committed
471 472 473 474
    }
  return i;
}

475 476
struct OpenTypeSpec
{
477 478
  Lisp_Object script;
  unsigned int script_tag, langsys_tag;
479 480 481 482
  int nfeatures[2];
  unsigned int *features[2];
};

483
#define OTF_SYM_TAG(SYM, TAG)					\
484
  do {								\
485 486
    unsigned char *p = SDATA (SYMBOL_NAME (SYM));		\
    TAG = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];	\
487 488
  } while (0)

489
#define OTF_TAG_STR(TAG, P)			\
490
  do {						\
491 492 493 494
    (P)[0] = (char) (TAG >> 24);		\
    (P)[1] = (char) ((TAG >> 16) & 0xFF);	\
    (P)[2] = (char) ((TAG >> 8) & 0xFF);	\
    (P)[3] = (char) (TAG & 0xFF);		\
495
    (P)[4] = '\0';				\
496 497
  } while (0)

498 499 500 501 502 503 504 505 506
#define OTF_TAG_SYM(SYM, TAG)			\
  do {						\
    char str[5];				\
    						\
    OTF_TAG_STR (TAG, str);			\
    (SYM) = font_intern_prop (str, 4, 1);	\
  } while (0)


507 508 509 510 511 512 513 514 515
static struct OpenTypeSpec *
ftfont_get_open_type_spec (Lisp_Object otf_spec)
{
  struct OpenTypeSpec *spec = malloc (sizeof (struct OpenTypeSpec));
  Lisp_Object val;
  int i, j, negative;

  if (! spec)
    return NULL;
516
  spec->script = XCAR (otf_spec);
517
  if (! NILP (spec->script))
518 519 520 521 522 523 524 525
    {
      OTF_SYM_TAG (spec->script, spec->script_tag);
      val = assq_no_quit (spec->script, Votf_script_alist);
      if (CONSP (val) && SYMBOLP (XCDR (val)))
	spec->script = XCDR (val);
      else
	spec->script = Qnil;
    }
526
  else
527
    spec->script_tag = 0x44464C54; 	/* "DFLT" */
528 529 530
  otf_spec = XCDR (otf_spec);
  val = XCAR (otf_spec);
  if (! NILP (val))
531
    OTF_SYM_TAG (val, spec->langsys_tag);
532
  else
533
    spec->langsys_tag = 0;
534 535 536 537 538
  spec->nfeatures[0] = spec->nfeatures[1] = 0;
  for (i = 0; i < 2; i++)
    {
      Lisp_Object len;

Juanma Barranquero's avatar
Juanma Barranquero committed
539
      otf_spec = XCDR (otf_spec);
540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570
      if (NILP (otf_spec))
	break;
      val = XCAR (otf_spec);
      if (NILP (val))
	continue;
      len = Flength (val);
      spec->features[i] = malloc (sizeof (int) * XINT (len));
      if (! spec->features[i])
	{
	  if (i > 0 && spec->features[0])
	    free (spec->features[0]);
	  free (spec);
	  return NULL;
	}
      for (j = 0, negative = 0; CONSP (val); val = XCDR (val))
	{
	  if (NILP (XCAR (val)))
	    negative = 1;
	  else
	    {
	      unsigned int tag;

	      OTF_SYM_TAG (XCAR (val), tag);
	      spec->features[i][j++] = negative ? tag & 0x80000000 : tag;
	    }
	}
      spec->nfeatures[i] = j;
    }
  return spec;
}

571
static FcPattern *ftfont_spec_pattern P_ ((Lisp_Object, char *,
Kenichi Handa's avatar
Kenichi Handa committed
572 573
					   struct OpenTypeSpec **));

574
static FcPattern *
575
ftfont_spec_pattern (spec, otlayout, otspec)
576 577 578
     Lisp_Object spec;
     char *otlayout;
     struct OpenTypeSpec **otspec;
Kenichi Handa's avatar
Kenichi Handa committed
579
{
Kenichi Handa's avatar
Kenichi Handa committed
580
  Lisp_Object tmp, extra;
Kenichi Handa's avatar
Kenichi Handa committed
581 582 583
  FcPattern *pattern = NULL;
  FcCharSet *charset = NULL;
  FcLangSet *langset = NULL;
584 585
  int n;
  int dpi = -1;
586
  int scalable = -1;
587
  Lisp_Object script = Qnil;
Kenichi Handa's avatar
Kenichi Handa committed
588
  Lisp_Object registry;
589
  int fc_charset_idx;
Kenichi Handa's avatar
Kenichi Handa committed
590

591
  if (! NILP (AREF (spec, FONT_ADSTYLE_INDEX))
592 593 594 595 596
      && SBYTES (SYMBOL_NAME (AREF (spec, FONT_ADSTYLE_INDEX))) > 0)
    /* Fontconfig doesn't support adstyle property.  */
    return NULL;
  if ((n = FONT_SLANT_NUMERIC (spec)) >= 0
      && n < 100)
597
    /* Fontconfig doesn't support reverse-italic/obligue.  */
598 599 600 601 602 603 604
    return NULL;

  if (INTEGERP (AREF (spec, FONT_DPI_INDEX)))
    dpi = XINT (AREF (spec, FONT_DPI_INDEX));
  if (INTEGERP (AREF (spec, FONT_AVGWIDTH_INDEX))
      && XINT (AREF (spec, FONT_AVGWIDTH_INDEX)) == 0)
    scalable = 1;
605

Kenichi Handa's avatar
Kenichi Handa committed
606 607
  registry = AREF (spec, FONT_REGISTRY_INDEX);
  if (NILP (registry)
608
      || EQ (registry, Qascii_0)
Kenichi Handa's avatar
Kenichi Handa committed
609 610 611
      || EQ (registry, Qiso10646_1)
      || EQ (registry, Qunicode_bmp)
      || EQ (registry, Qunicode_sip))
612
    fc_charset_idx = -1;
Kenichi Handa's avatar
Kenichi Handa committed
613
  else
Kenichi Handa's avatar
Kenichi Handa committed
614
    {
615 616
      FcChar8 *lang;

617 618
      fc_charset_idx = ftfont_get_charset (registry);
      if (fc_charset_idx < 0)
619
	return NULL;
620 621
      charset = fc_charset_table[fc_charset_idx].fc_charset;
      lang = (FcChar8 *) fc_charset_table[fc_charset_idx].lang;
622 623 624 625 626 627 628
      if (lang)
	{
	  langset = FcLangSetCreate ();
	  if (! langset)
	    goto err;
	  FcLangSetAdd (langset, lang);
	}
Kenichi Handa's avatar
Kenichi Handa committed
629 630
    }

631
  otlayout[0] = '\0';
632 633
  for (extra = AREF (spec, FONT_EXTRA_INDEX);
       CONSP (extra); extra = XCDR (extra))
Kenichi Handa's avatar
Kenichi Handa committed
634
    {
635 636
      Lisp_Object key, val;

637 638 639 640
      key = XCAR (XCAR (extra)), val = XCDR (XCAR (extra));
      if (EQ (key, QCdpi))
	dpi = XINT (val);
      else if (EQ (key, QClang))
Kenichi Handa's avatar
Kenichi Handa committed
641
	{
642 643
	  if (! langset)
	    langset = FcLangSetCreate ();
Kenichi Handa's avatar
Kenichi Handa committed
644 645
	  if (! langset)
	    goto err;
646
	  if (SYMBOLP (val))
Kenichi Handa's avatar
Kenichi Handa committed
647
	    {
648
	      if (! FcLangSetAdd (langset, SYMBOL_FcChar8 (val)))
Kenichi Handa's avatar
Kenichi Handa committed
649 650 651
		goto err;
	    }
	  else
652 653 654 655
	    for (; CONSP (val); val = XCDR (val))
	      if (SYMBOLP (XCAR (val))
		  && ! FcLangSetAdd (langset, SYMBOL_FcChar8 (XCAR (val))))
		goto err;
Kenichi Handa's avatar
Kenichi Handa committed
656
	}
657 658 659 660 661 662 663 664 665
      else if (EQ (key, QCotf))
	{
	  *otspec = ftfont_get_open_type_spec (val);
	  if (! *otspec)
	    return NULL;
	  strcat (otlayout, "otlayout:");
	  OTF_TAG_STR ((*otspec)->script_tag, otlayout + 9);
	  script = (*otspec)->script;
	}
666 667 668 669 670
      else if (EQ (key, QCscript))
	script = val;
      else if (EQ (key, QCscalable))
	scalable = ! NILP (val);
    }
Kenichi Handa's avatar
Kenichi Handa committed
671

672 673 674 675 676 677 678 679 680 681 682 683 684
  if (! NILP (script) && ! charset)
    {
      Lisp_Object chars = assq_no_quit (script, Vscript_representative_chars);

      if (CONSP (chars))
	{
	  charset = FcCharSetCreate ();
	  if (! charset)
	    goto err;
	  for (chars = XCDR (chars); CONSP (chars); chars = XCDR (chars))
	    if (CHARACTERP (XCAR (chars))
		&& ! FcCharSetAddChar (charset, XUINT (XCAR (chars))))
	      goto err;
Kenichi Handa's avatar
Kenichi Handa committed
685 686 687
	}
    }

688
  pattern = FcPatternCreate ();
689 690 691
  if (! pattern)
    goto err;
  tmp = AREF (spec, FONT_FOUNDRY_INDEX);
692
  if (! NILP (tmp)
693 694
      && ! FcPatternAddString (pattern, FC_FOUNDRY, SYMBOL_FcChar8 (tmp)))
    goto err;
695 696 697 698
  tmp = AREF (spec, FONT_FAMILY_INDEX);
  if (! NILP (tmp)
      && ! FcPatternAddString (pattern, FC_FAMILY, SYMBOL_FcChar8 (tmp)))
    goto err;
Kenichi Handa's avatar
Kenichi Handa committed
699 700 701 702 703 704
  if (charset
      && ! FcPatternAddCharSet (pattern, FC_CHARSET, charset))
    goto err;
  if (langset
      && ! FcPatternAddLangSet (pattern, FC_LANG, langset))
    goto err;
705 706 707 708
  if (dpi >= 0
      && ! FcPatternAddDouble (pattern, FC_DPI, dpi))
    goto err;
  if (scalable >= 0
Kenichi Handa's avatar
Kenichi Handa committed
709
      && ! FcPatternAddBool (pattern, FC_SCALABLE, scalable ? FcTrue : FcFalse))
710
    goto err;
711

712
  goto finish;
Kenichi Handa's avatar
Kenichi Handa committed
713

714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733
 err:
  /* We come here because of unexpected error in fontconfig API call
     (usually insufficient memory).  */
  if (pattern)
    {
      FcPatternDestroy (pattern);
      pattern = NULL;
    }
  if (*otspec)
    {
      if ((*otspec)->nfeatures[0] > 0)
	free ((*otspec)->features[0]);
      if ((*otspec)->nfeatures[1] > 0)
	free ((*otspec)->features[1]);
      free (*otspec);
      *otspec = NULL;
    }

 finish:
  if (langset) FcLangSetDestroy (langset);
734
  if (charset && fc_charset_idx < 0) FcCharSetDestroy (charset);
735 736 737 738 739 740 741
  return pattern;
}

static Lisp_Object
ftfont_list (frame, spec)
     Lisp_Object frame, spec;
{
742
  Lisp_Object val = Qnil, family;
743 744 745 746 747 748
  int i;
  FcPattern *pattern;
  FcFontSet *fontset = NULL;
  FcObjectSet *objset = NULL;
  char otlayout[15];		/* For "otlayout:XXXX" */
  struct OpenTypeSpec *otspec = NULL;
749
  int spacing = -1;
Juanma Barranquero's avatar
Juanma Barranquero committed
750

751 752 753 754 755 756
  if (! fc_initialized)
    {
      FcInit ();
      fc_initialized = 1;
    }

757
  pattern = ftfont_spec_pattern (spec, otlayout, &otspec);
758 759
  if (! pattern)
    return Qnil;
760 761
  if (INTEGERP (AREF (spec, FONT_SPACING_INDEX)))
    spacing = XINT (AREF (spec, FONT_SPACING_INDEX));
762 763 764 765 766
  family = AREF (spec, FONT_FAMILY_INDEX);
  if (! NILP (family))
    {
      Lisp_Object resolved;

767
      resolved = ftfont_resolve_generic_family (family, pattern);
768 769 770 771 772 773 774 775 776
      if (! NILP (resolved))
	{
	  FcPatternDel (pattern, FC_FAMILY);
	  if (! FcPatternAddString (pattern, FC_FAMILY,
				    SYMBOL_FcChar8 (resolved)))
	    goto err;
	}
    }

777
  objset = FcObjectSetBuild (FC_FOUNDRY, FC_FAMILY, FC_WEIGHT, FC_SLANT,
778
			     FC_WIDTH, FC_PIXEL_SIZE, FC_SPACING, FC_SCALABLE,
779
			     FC_FILE, FC_INDEX,
780 781 782
#ifdef FC_CAPABILITY
			     FC_CAPABILITY,
#endif	/* FC_CAPABILITY */
783 784 785
#ifdef FC_FONTFORMAT
			     FC_FONTFORMAT,
#endif
786
			     NULL);
787 788
  if (! objset)
    goto err;
789

790 791 792
  fontset = FcFontList (NULL, pattern, objset);
  if (! fontset)
    goto err;
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
#if 0
  /* Need fix because this finds any fonts.  */
  if (fontset->nfont == 0 && ! NILP (family))
    {
      /* Try maching with configuration.  For instance, the
	 configuration may specify "Nimbus Mono L" as an alias of
	 "Courier".  */
      FcPattern *pat = FcPatternBuild (0, FC_FAMILY, FcTypeString,
				       SYMBOL_FcChar8 (family), NULL);
      FcChar8 *fam;

      if (FcConfigSubstitute (NULL, pat, FcMatchPattern) == FcTrue)
	{
	  for (i = 0;
	       FcPatternGetString (pat, FC_FAMILY, i, &fam) == FcResultMatch;
	       i++)
	    {
	      FcPatternDel (pattern, FC_FAMILY);
	      FcPatternAddString (pattern, FC_FAMILY, fam);
	      FcFontSetDestroy (fontset);
	      fontset = FcFontList (NULL, pattern, objset);
	      if (fontset->nfont > 0)
		break;
	    }
	}
    }
#endif
820
  for (i = 0; i < fontset->nfont; i++)
821
    {
822
      Lisp_Object entity;
823

824 825 826 827 828 829 830 831 832 833
      if (spacing >= 0)
	{
	  int this;

	  if ((FcPatternGetInteger (fontset->fonts[i], FC_SPACING, 0, &this)
	       == FcResultMatch)
	      && spacing != this)
	    continue;
	}

834
#ifdef FC_CAPABILITY
835 836 837
      if (otlayout[0])
	{
	  FcChar8 *this;
838

839 840 841 842 843
	  if (FcPatternGetString (fontset->fonts[i], FC_CAPABILITY, 0,
				  &this) != FcResultMatch
	      || ! strstr ((char *) this, otlayout))
	    continue;
	}
844
#endif	/* FC_CAPABILITY */
845
#ifdef HAVE_LIBOTF
846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865
      if (otspec)
	{
	  FcChar8 *file;
	  OTF *otf;

	  if (FcPatternGetString (fontset->fonts[i], FC_FILE, 0, &file)
	      != FcResultMatch)
	    continue;
	  otf = OTF_open ((char *) file);
	  if (! otf)
	    continue;
	  if (OTF_check_features (otf, 1,
				  otspec->script_tag, otspec->langsys_tag,
				  otspec->features[0],
				  otspec->nfeatures[0]) != 1
	      || OTF_check_features (otf, 0,
				     otspec->script_tag, otspec->langsys_tag,
				     otspec->features[1],
				     otspec->nfeatures[1]) != 1)
	    continue;
Kenichi Handa's avatar
Kenichi Handa committed
866
	}
867
#endif	/* HAVE_LIBOTF */
868 869
      entity = ftfont_pattern_entity (fontset->fonts[i],
				      AREF (spec, FONT_EXTRA_INDEX));
870 871
      if (! NILP (entity))
	val = Fcons (entity, val);
Kenichi Handa's avatar
Kenichi Handa committed
872
    }
873
  font_add_log ("ftfont-list", spec, val);
Kenichi Handa's avatar
Kenichi Handa committed
874 875 876 877
  goto finish;

 err:
  /* We come here because of unexpected error in fontconfig API call
878
     (usually insufficient memory).  */
Kenichi Handa's avatar
Kenichi Handa committed
879 880 881 882 883 884 885 886 887
  val = Qnil;

 finish:
  if (objset) FcObjectSetDestroy (objset);
  if (fontset) FcFontSetDestroy (fontset);
  if (pattern) FcPatternDestroy (pattern);
  return val;
}

888 889 890 891
static Lisp_Object
ftfont_match (frame, spec)
     Lisp_Object frame, spec;
{
Kenichi Handa's avatar
Kenichi Handa committed
892
  Lisp_Object entity;
893
  FcPattern *pattern, *match = NULL;
894
  FcResult result;
895 896
  char otlayout[15];		/* For "otlayout:XXXX" */
  struct OpenTypeSpec *otspec = NULL;
897 898 899 900 901 902 903

  if (! fc_initialized)
    {
      FcInit ();
      fc_initialized = 1;
    }

904
  pattern = ftfont_spec_pattern (spec, otlayout, &otspec);
905
  if (! pattern)
906 907
    return Qnil;

908
  if (INTEGERP (AREF (spec, FONT_SIZE_INDEX)))
909
    {
910
      FcValue value;
911

912 913 914 915 916 917 918 919 920
      value.type = FcTypeDouble;
      value.u.d = XINT (AREF (spec, FONT_SIZE_INDEX));
      FcPatternAdd (pattern, FC_PIXEL_SIZE, value, FcFalse);
    }
  if (FcConfigSubstitute (NULL, pattern, FcMatchPattern) == FcTrue)
    {
      FcDefaultSubstitute (pattern);
      match = FcFontMatch (NULL, pattern, &result);
      if (match)
921
	{
922
	  entity = ftfont_pattern_entity (match, AREF (spec, FONT_EXTRA_INDEX));
923 924 925 926 927 928 929
	  FcPatternDestroy (match);
	  if (! NILP (AREF (spec, FONT_FAMILY_INDEX))
	      && NILP (assq_no_quit (AREF (spec, FONT_FAMILY_INDEX),
				     ftfont_generic_family_list))
	      && NILP (Fstring_equal (AREF (spec, FONT_FAMILY_INDEX),
				      AREF (entity, FONT_FAMILY_INDEX))))
	    entity = Qnil;
930 931
	}
    }
932
  FcPatternDestroy (pattern);
933

934
  font_add_log ("ftfont-match", spec, entity);
935 936 937
  return entity;
}

Kenichi Handa's avatar
Kenichi Handa committed
938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956
static Lisp_Object
ftfont_list_family (frame)
     Lisp_Object frame;
{
  Lisp_Object list;
  FcPattern *pattern = NULL;
  FcFontSet *fontset = NULL;
  FcObjectSet *objset = NULL;
  int i;

  if (! fc_initialized)
    {
      FcInit ();
      fc_initialized = 1;
    }

  pattern = FcPatternCreate ();
  if (! pattern)
    goto finish;
957
  objset = FcObjectSetBuild (FC_FAMILY, NULL);
Kenichi Handa's avatar
Kenichi Handa committed
958 959 960 961 962 963 964 965 966 967 968 969 970
  if (! objset)
    goto finish;
  fontset = FcFontList (NULL, pattern, objset);
  if (! fontset)
    goto finish;

  list = Qnil;
  for (i = 0; i < fontset->nfont; i++)
    {
      FcPattern *pat = fontset->fonts[i];
      FcChar8 *str;

      if (FcPatternGetString (pat, FC_FAMILY, 0, &str) == FcResultMatch)
971
	list = Fcons (intern ((char *) str), list);
Kenichi Handa's avatar
Kenichi Handa committed
972 973 974 975 976 977 978 979 980 981 982
    }

 finish:
  if (objset) FcObjectSetDestroy (objset);
  if (fontset) FcFontSetDestroy (fontset);
  if (pattern) FcPatternDestroy (pattern);

  return list;
}


983
static Lisp_Object
Kenichi Handa's avatar
Kenichi Handa committed
984 985 986 987 988 989 990
ftfont_open (f, entity, pixel_size)
     FRAME_PTR f;
     Lisp_Object entity;
     int pixel_size;
{
  struct ftfont_info *ftfont_info;
  struct font *font;
991
  struct ftfont_cache_data *cache_data;
Kenichi Handa's avatar
Kenichi Handa committed
992 993 994
  FT_Face ft_face;
  FT_Size ft_size;
  FT_UInt size;
995
  Lisp_Object val, filename, index, cache, font_object;
Kenichi Handa's avatar
Kenichi Handa committed
996
  int scalable;
Kenichi Handa's avatar
Kenichi Handa committed
997
  int spacing;
998 999 1000
  char name[256];
  int i, len;
  int upEM;
Kenichi Handa's avatar
Kenichi Handa committed
1001

1002 1003 1004 1005
  val = assq_no_quit (QCfont_entity, AREF (entity, FONT_EXTRA_INDEX));
  if (! CONSP (val))
    return Qnil;
  val = XCDR (val);
1006
  cache = ftfont_lookup_cache (val, 1);
Kenichi Handa's avatar
Kenichi Handa committed
1007 1008
  if (NILP (cache))
    return Qnil;
1009 1010
  filename = XCAR (val);
  index = XCDR (val);
Kenichi Handa's avatar
Kenichi Handa committed
1011
  val = XCDR (cache);
1012 1013
  cache_data = XSAVE_VALUE (XCDR (cache))->pointer;
  ft_face = cache_data->ft_face;
Kenichi Handa's avatar
Kenichi Handa committed
1014
  if (XSAVE_VALUE (val)->integer > 0)
Kenichi Handa's avatar
Kenichi Handa committed
1015
    {
Kenichi Handa's avatar
Kenichi Handa committed
1016
      /* FT_Face in this cache is already used by the different size.  */
Kenichi Handa's avatar
Kenichi Handa committed
1017
      if (FT_New_Size (ft_face, &ft_size) != 0)
1018
	return Qnil;
Kenichi Handa's avatar