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1701 lines
44 KiB
C
1701 lines
44 KiB
C
/* ftfont.c -- FreeType font driver.
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Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
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Copyright (C) 2006, 2007, 2008
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National Institute of Advanced Industrial Science and Technology (AIST)
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Registration Number H13PRO009
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include <config.h>
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#include <stdio.h>
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#include <fontconfig/fontconfig.h>
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#include <fontconfig/fcfreetype.h>
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#include "lisp.h"
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#include "dispextern.h"
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#include "frame.h"
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#include "blockinput.h"
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#include "character.h"
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#include "charset.h"
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#include "coding.h"
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#include "fontset.h"
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#include "font.h"
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#include "ftfont.h"
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/* Symbolic type of this font-driver. */
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Lisp_Object Qfreetype;
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/* Fontconfig's generic families and their aliases. */
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static Lisp_Object Qmonospace, Qsans_serif, Qserif, Qmono, Qsans, Qsans__serif;
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/* Flag to tell if FcInit is areadly called or not. */
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static int fc_initialized;
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/* Handle to a FreeType library instance. */
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static FT_Library ft_library;
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/* Cache for FreeType fonts. */
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static Lisp_Object freetype_font_cache;
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/* Fontconfig's charset used for finding fonts of registry
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"iso8859-1". */
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static FcCharSet *cs_iso8859_1;
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/* The actual structure for FreeType font that can be casted to struct
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font. */
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struct ftfont_info
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{
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struct font font;
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FT_Size ft_size;
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#ifdef HAVE_LIBOTF
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int maybe_otf; /* Flag to tell if this may be OTF or not. */
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OTF *otf;
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#endif /* HAVE_LIBOTF */
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};
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static int ftfont_build_basic_charsets P_ ((void));
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static Lisp_Object ftfont_pattern_entity P_ ((FcPattern *,
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Lisp_Object, Lisp_Object));
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static Lisp_Object ftfont_list_generic_family P_ ((Lisp_Object, Lisp_Object,
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Lisp_Object));
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Lisp_Object ftfont_font_format P_ ((FcPattern *));
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#define SYMBOL_FcChar8(SYM) (FcChar8 *) SDATA (SYMBOL_NAME (SYM))
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static int
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ftfont_build_basic_charsets ()
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{
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FcChar32 c;
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cs_iso8859_1 = FcCharSetCreate ();
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if (! cs_iso8859_1)
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return -1;
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for (c = ' '; c < 127; c++)
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if (! FcCharSetAddChar (cs_iso8859_1, c))
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return -1;
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#if 0
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/* This part is currently disabled. Should be fixed later. */
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for (c = 192; c < 256; c++)
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if (! FcCharSetAddChar (cs_iso8859_1, c))
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return -1;
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#endif
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return 0;
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}
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static Lisp_Object
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ftfont_pattern_entity (p, frame, registry)
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FcPattern *p;
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Lisp_Object frame, registry;
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{
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Lisp_Object entity;
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FcChar8 *file, *fontformat;
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FcCharSet *charset;
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char *str;
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int numeric;
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double dbl;
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if (FcPatternGetString (p, FC_FILE, 0, &file) != FcResultMatch)
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return Qnil;
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if (FcPatternGetCharSet (p, FC_CHARSET, 0, &charset) != FcResultMatch)
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charset = NULL;
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#ifdef FC_FONTFORMAT
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if (FcPatternGetString (p, FC_FONTFORMAT, 0, &fontformat) != FcResultMatch)
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#endif /* FC_FONTFORMAT */
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fontformat = NULL;
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entity = Fmake_vector (make_number (FONT_ENTITY_MAX), null_string);
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ASET (entity, FONT_TYPE_INDEX, Qfreetype);
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ASET (entity, FONT_REGISTRY_INDEX, registry);
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ASET (entity, FONT_FRAME_INDEX, frame);
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ASET (entity, FONT_OBJLIST_INDEX, Qnil);
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if (FcPatternGetString (p, FC_FOUNDRY, 0, (FcChar8 **) &str) == FcResultMatch)
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ASET (entity, FONT_FOUNDRY_INDEX, intern_downcase (str, strlen (str)));
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if (FcPatternGetString (p, FC_FAMILY, 0, (FcChar8 **) &str) == FcResultMatch)
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ASET (entity, FONT_FAMILY_INDEX, intern_downcase (str, strlen (str)));
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if (FcPatternGetInteger (p, FC_WEIGHT, 0, &numeric) == FcResultMatch)
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{
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if (numeric == FC_WEIGHT_REGULAR)
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numeric = 100;
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ASET (entity, FONT_WEIGHT_INDEX, make_number (numeric));
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}
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if (FcPatternGetInteger (p, FC_SLANT, 0, &numeric) == FcResultMatch)
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ASET (entity, FONT_SLANT_INDEX, make_number (numeric + 100));
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if (FcPatternGetInteger (p, FC_WIDTH, 0, &numeric) == FcResultMatch)
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ASET (entity, FONT_WIDTH_INDEX, make_number (numeric));
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if (FcPatternGetDouble (p, FC_PIXEL_SIZE, 0, &dbl) == FcResultMatch)
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ASET (entity, FONT_SIZE_INDEX, make_number (dbl));
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else
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ASET (entity, FONT_SIZE_INDEX, make_number (0));
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if (FcPatternGetInteger (p, FC_SPACING, 0, &numeric) != FcResultMatch)
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numeric = -1;
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file = FcStrCopy (file);
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if (! file)
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return Qnil;
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p = FcPatternCreate ();
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if (! p)
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return Qnil;
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if (FcPatternAddString (p, FC_FILE, file) == FcFalse
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|| (charset
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&& FcPatternAddCharSet (p, FC_CHARSET, charset) == FcFalse)
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#ifdef FC_FONTFORMAT
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|| (fontformat
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&& FcPatternAddString (p, FC_FONTFORMAT, fontformat) == FcFalse)
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#endif /* FC_FONTFORMAT */
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|| (numeric >= 0
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&& FcPatternAddInteger (p, FC_SPACING, numeric) == FcFalse))
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{
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FcPatternDestroy (p);
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return Qnil;
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}
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ASET (entity, FONT_EXTRA_INDEX, make_save_value (p, 0));
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return entity;
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}
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static Lisp_Object ftfont_generic_family_list;
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static Lisp_Object
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ftfont_list_generic_family (spec, frame, registry)
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Lisp_Object spec, frame, registry;
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{
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Lisp_Object family = AREF (spec, FONT_FAMILY_INDEX);
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Lisp_Object slot, list, val;
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if (EQ (family, Qmono))
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family = Qmonospace;
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else if (EQ (family, Qsans) || EQ (family, Qsans__serif))
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family = Qsans_serif;
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slot = assq_no_quit (family, ftfont_generic_family_list);
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if (! CONSP (slot))
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return null_vector;
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list = XCDR (slot);
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if (EQ (list, Qt))
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{
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/* Not yet listed. */
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FcObjectSet *objset = NULL;
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FcPattern *pattern = NULL, *pat = NULL;
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FcFontSet *fontset = NULL;
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FcChar8 *fam;
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int i, j;
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objset = FcObjectSetBuild (FC_FOUNDRY, FC_FAMILY, FC_WEIGHT, FC_SLANT,
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FC_WIDTH, FC_PIXEL_SIZE, FC_SPACING,
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FC_CHARSET, FC_FILE,
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#ifdef FC_FONTFORMAT
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FC_FONTFORMAT,
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#endif /* FC_FONTFORMAT */
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NULL);
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if (! objset)
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goto err;
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pattern = FcPatternBuild (NULL, FC_FAMILY, FcTypeString,
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SYMBOL_FcChar8 (family), (char *) 0);
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if (! pattern)
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goto err;
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pat = FcPatternCreate ();
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if (! pat)
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goto err;
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FcConfigSubstitute (NULL, pattern, FcMatchPattern);
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for (i = 0, val = Qnil;
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FcPatternGetString (pattern, FC_FAMILY, i, &fam) == FcResultMatch;
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i++)
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{
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if (strcmp ((char *) fam, (char *) SYMBOL_FcChar8 (family)) == 0)
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continue;
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if (! FcPatternAddString (pat, FC_FAMILY, fam))
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goto err;
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fontset = FcFontList (NULL, pat, objset);
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if (! fontset)
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goto err;
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/* Here we build the list in reverse order so that the last
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loop in this function build a list in the correct
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order. */
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for (j = 0; j < fontset->nfont; j++)
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{
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Lisp_Object entity;
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entity = ftfont_pattern_entity (fontset->fonts[j],
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frame, registry);
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if (! NILP (entity))
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val = Fcons (entity, val);
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}
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FcFontSetDestroy (fontset);
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fontset = NULL;
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FcPatternDel (pat, FC_FAMILY);
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}
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list = val;
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XSETCDR (slot, list);
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err:
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if (pat) FcPatternDestroy (pat);
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if (pattern) FcPatternDestroy (pattern);
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if (fontset) FcFontSetDestroy (fontset);
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if (objset) FcObjectSetDestroy (objset);
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if (EQ (list, Qt))
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return Qnil;
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}
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ASET (spec, FONT_FAMILY_INDEX, Qnil);
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for (val = Qnil; CONSP (list); list = XCDR (list))
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if (font_match_p (spec, XCAR (list)))
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val = Fcons (XCAR (list), val);
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ASET (spec, FONT_FAMILY_INDEX, family);
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return Fvconcat (1, &val);
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}
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static Lisp_Object ftfont_get_cache P_ ((FRAME_PTR));
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static Lisp_Object ftfont_list P_ ((Lisp_Object, Lisp_Object));
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static Lisp_Object ftfont_match P_ ((Lisp_Object, Lisp_Object));
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static Lisp_Object ftfont_list_family P_ ((Lisp_Object));
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static void ftfont_free_entity P_ ((Lisp_Object));
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static struct font *ftfont_open P_ ((FRAME_PTR, Lisp_Object, int));
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static void ftfont_close P_ ((FRAME_PTR, struct font *));
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static int ftfont_has_char P_ ((Lisp_Object, int));
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static unsigned ftfont_encode_char P_ ((struct font *, int));
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static int ftfont_text_extents P_ ((struct font *, unsigned *, int,
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struct font_metrics *));
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static int ftfont_get_bitmap P_ ((struct font *, unsigned,
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struct font_bitmap *, int));
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static int ftfont_anchor_point P_ ((struct font *, unsigned, int,
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int *, int *));
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static Lisp_Object ftfont_shape P_ ((Lisp_Object));
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struct font_driver ftfont_driver =
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{
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0, /* Qfreetype */
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ftfont_get_cache,
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ftfont_list,
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ftfont_match,
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ftfont_list_family,
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ftfont_free_entity,
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ftfont_open,
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ftfont_close,
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/* We can't draw a text without device dependent functions. */
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NULL,
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NULL,
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ftfont_has_char,
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ftfont_encode_char,
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ftfont_text_extents,
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/* We can't draw a text without device dependent functions. */
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NULL,
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ftfont_get_bitmap,
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NULL,
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NULL,
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NULL,
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ftfont_anchor_point,
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NULL,
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NULL,
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||
NULL,
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||
NULL,
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#if defined (HAVE_M17N_FLT) && defined (HAVE_LIBOTF)
|
||
ftfont_shape
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#else /* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
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NULL
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#endif /* not (HAVE_M17N_FLT && HAVE_LIBOTF) */
|
||
};
|
||
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extern Lisp_Object QCname;
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||
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||
static Lisp_Object
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||
ftfont_get_cache (f)
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FRAME_PTR f;
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{
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||
return freetype_font_cache;
|
||
}
|
||
|
||
struct OpenTypeSpec
|
||
{
|
||
Lisp_Object script;
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||
unsigned int script_tag, langsys_tag;
|
||
int nfeatures[2];
|
||
unsigned int *features[2];
|
||
};
|
||
|
||
#define OTF_SYM_TAG(SYM, TAG) \
|
||
do { \
|
||
unsigned char *p = SDATA (SYMBOL_NAME (SYM)); \
|
||
TAG = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]; \
|
||
} while (0)
|
||
|
||
#define OTF_TAG_STR(TAG, P) \
|
||
do { \
|
||
(P)[0] = (char) (TAG >> 24); \
|
||
(P)[1] = (char) ((TAG >> 16) & 0xFF); \
|
||
(P)[2] = (char) ((TAG >> 8) & 0xFF); \
|
||
(P)[3] = (char) (TAG & 0xFF); \
|
||
(P)[4] = '\0'; \
|
||
} while (0)
|
||
|
||
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;
|
||
spec->script = XCAR (otf_spec);
|
||
if (! NILP (val))
|
||
{
|
||
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;
|
||
}
|
||
else
|
||
spec->script_tag = 0x44464C54; /* "DFLT" */
|
||
otf_spec = XCDR (otf_spec);
|
||
val = XCAR (otf_spec);
|
||
if (! NILP (val))
|
||
OTF_SYM_TAG (val, spec->langsys_tag);
|
||
else
|
||
spec->langsys_tag = 0;
|
||
spec->nfeatures[0] = spec->nfeatures[1] = 0;
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
Lisp_Object len;
|
||
|
||
otf_spec = XCDR (otf_spec);
|
||
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;
|
||
}
|
||
|
||
static Lisp_Object
|
||
ftfont_list (frame, spec)
|
||
Lisp_Object frame, spec;
|
||
{
|
||
Lisp_Object val, tmp, extra;
|
||
int i;
|
||
FcPattern *pattern = NULL;
|
||
FcCharSet *charset = NULL;
|
||
FcLangSet *langset = NULL;
|
||
FcFontSet *fontset = NULL;
|
||
FcObjectSet *objset = NULL;
|
||
Lisp_Object script;
|
||
Lisp_Object registry = Qunicode_bmp;
|
||
struct OpenTypeSpec *otspec= NULL;
|
||
int weight = 0;
|
||
double dpi = -1;
|
||
int spacing = -1;
|
||
int scalable = -1;
|
||
char otlayout[15]; /* For "otlayout:XXXX" */
|
||
|
||
val = null_vector;
|
||
|
||
if (! fc_initialized)
|
||
{
|
||
FcInit ();
|
||
fc_initialized = 1;
|
||
}
|
||
|
||
if (! NILP (AREF (spec, FONT_ADSTYLE_INDEX))
|
||
&& ! EQ (AREF (spec, FONT_ADSTYLE_INDEX), null_string))
|
||
return val;
|
||
if (! NILP (AREF (spec, FONT_SLANT_INDEX))
|
||
&& XINT (AREF (spec, FONT_SLANT_INDEX)) < 100)
|
||
/* Fontconfig doesn't support reverse-italic/obligue. */
|
||
return val;
|
||
|
||
if (! NILP (AREF (spec, FONT_REGISTRY_INDEX)))
|
||
{
|
||
registry = AREF (spec, FONT_REGISTRY_INDEX);
|
||
if (EQ (registry, Qiso8859_1))
|
||
{
|
||
if (! cs_iso8859_1
|
||
&& ftfont_build_basic_charsets () < 0)
|
||
return Qnil;
|
||
charset = cs_iso8859_1;
|
||
}
|
||
else if (! EQ (registry, Qiso10646_1)
|
||
&& ! EQ (registry, Qunicode_bmp)
|
||
&& ! EQ (registry, Qunicode_sip))
|
||
return val;
|
||
}
|
||
|
||
otlayout[0] = '\0';
|
||
script = Qnil;
|
||
for (extra = AREF (spec, FONT_EXTRA_INDEX);
|
||
CONSP (extra); extra = XCDR (extra))
|
||
{
|
||
Lisp_Object key, val;
|
||
|
||
tmp = XCAR (extra);
|
||
key = XCAR (tmp), val = XCDR (tmp);
|
||
if (EQ (key, QCotf))
|
||
{
|
||
otspec = ftfont_get_open_type_spec (val);
|
||
if (! otspec)
|
||
return null_vector;
|
||
strcat (otlayout, "otlayout:");
|
||
OTF_TAG_STR (otspec->script_tag, otlayout + 9);
|
||
script = otspec->script;
|
||
}
|
||
else if (EQ (key, QClanguage))
|
||
{
|
||
langset = FcLangSetCreate ();
|
||
if (! langset)
|
||
goto err;
|
||
if (SYMBOLP (val))
|
||
{
|
||
if (! FcLangSetAdd (langset, SYMBOL_FcChar8 (val)))
|
||
goto err;
|
||
}
|
||
else
|
||
for (; CONSP (val); val = XCDR (val))
|
||
if (SYMBOLP (XCAR (val))
|
||
&& ! FcLangSetAdd (langset, SYMBOL_FcChar8 (XCAR (val))))
|
||
goto err;
|
||
}
|
||
else if (EQ (key, QCscript))
|
||
script = val;
|
||
else if (EQ (key, QCdpi))
|
||
dpi = XINT (val);
|
||
else if (EQ (key, QCspacing))
|
||
spacing = XINT (val);
|
||
else if (EQ (key, QCscalable))
|
||
scalable = ! NILP (val);
|
||
}
|
||
|
||
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;
|
||
}
|
||
}
|
||
|
||
pattern = FcPatternCreate ();
|
||
if (! pattern)
|
||
goto err;
|
||
tmp = AREF (spec, FONT_FOUNDRY_INDEX);
|
||
if (SYMBOLP (tmp) && ! NILP (tmp)
|
||
&& ! FcPatternAddString (pattern, FC_FOUNDRY, SYMBOL_FcChar8 (tmp)))
|
||
goto err;
|
||
tmp = AREF (spec, FONT_FAMILY_INDEX);
|
||
if (SYMBOLP (tmp) && ! NILP (tmp)
|
||
&& ! FcPatternAddString (pattern, FC_FAMILY, SYMBOL_FcChar8 (tmp)))
|
||
goto err;
|
||
/* Emacs conventionally doesn't distinguish normal, regular, and
|
||
medium weight, but fontconfig does. So, we can't restrict font
|
||
listing by weight. We check it after getting a list. */
|
||
tmp = AREF (spec, FONT_WEIGHT_INDEX);
|
||
if (INTEGERP (tmp))
|
||
weight = XINT (tmp);
|
||
tmp = AREF (spec, FONT_SLANT_INDEX);
|
||
if (INTEGERP (tmp)
|
||
&& ! FcPatternAddInteger (pattern, FC_SLANT, XINT (tmp) - 100))
|
||
goto err;
|
||
tmp = AREF (spec, FONT_WIDTH_INDEX);
|
||
if (INTEGERP (tmp)
|
||
&& ! FcPatternAddInteger (pattern, FC_WIDTH, XINT (tmp)))
|
||
goto err;
|
||
|
||
if (charset
|
||
&& ! FcPatternAddCharSet (pattern, FC_CHARSET, charset))
|
||
goto err;
|
||
if (langset
|
||
&& ! FcPatternAddLangSet (pattern, FC_LANG, langset))
|
||
goto err;
|
||
if (dpi >= 0
|
||
&& ! FcPatternAddDouble (pattern, FC_DPI, dpi))
|
||
goto err;
|
||
if (spacing >= 0
|
||
&& ! FcPatternAddInteger (pattern, FC_SPACING, spacing))
|
||
goto err;
|
||
if (scalable >= 0
|
||
&& ! FcPatternAddBool (pattern, FC_SCALABLE, scalable ? FcTrue : FcFalse))
|
||
goto err;
|
||
|
||
objset = FcObjectSetBuild (FC_FOUNDRY, FC_FAMILY, FC_WEIGHT, FC_SLANT,
|
||
FC_WIDTH, FC_PIXEL_SIZE, FC_SPACING,
|
||
FC_CHARSET, FC_FILE,
|
||
#ifdef FC_FONTFORMAT
|
||
FC_FONTFORMAT,
|
||
#endif /* FC_FONTFORMAT */
|
||
NULL);
|
||
if (! objset)
|
||
goto err;
|
||
if (otlayout[0])
|
||
{
|
||
#ifdef FC_CAPABILITY
|
||
if (! FcObjectSetAdd (objset, FC_CAPABILITY))
|
||
goto err;
|
||
#else /* not FC_CAPABILITY */
|
||
goto finish;
|
||
#endif /* not FC_CAPABILITY */
|
||
}
|
||
|
||
fontset = FcFontList (NULL, pattern, objset);
|
||
if (! fontset)
|
||
goto err;
|
||
|
||
if (fontset->nfont > 0)
|
||
{
|
||
double pixel_size;
|
||
|
||
if (NILP (AREF (spec, FONT_SIZE_INDEX)))
|
||
pixel_size = 0;
|
||
else
|
||
pixel_size = XINT (AREF (spec, FONT_SIZE_INDEX));
|
||
|
||
for (i = 0, val = Qnil; i < fontset->nfont; i++)
|
||
{
|
||
Lisp_Object entity;
|
||
|
||
if (pixel_size > 0)
|
||
{
|
||
double this;
|
||
|
||
if (FcPatternGetDouble (fontset->fonts[i], FC_PIXEL_SIZE, 0,
|
||
&this) == FcResultMatch
|
||
&& ((this < pixel_size - FONT_PIXEL_SIZE_QUANTUM)
|
||
|| (this > pixel_size + FONT_PIXEL_SIZE_QUANTUM)))
|
||
continue;
|
||
}
|
||
if (weight > 0)
|
||
{
|
||
int this;
|
||
|
||
if (FcPatternGetInteger (fontset->fonts[i], FC_WEIGHT, 0,
|
||
&this) != FcResultMatch
|
||
|| (this != weight
|
||
&& (weight != 100
|
||
|| this < FC_WEIGHT_REGULAR
|
||
|| this > FC_WEIGHT_MEDIUM)))
|
||
continue;
|
||
}
|
||
#ifdef FC_CAPABILITY
|
||
if (otlayout[0])
|
||
{
|
||
FcChar8 *this;
|
||
|
||
if (FcPatternGetString (fontset->fonts[i], FC_CAPABILITY, 0,
|
||
&this) != FcResultMatch
|
||
|| ! strstr ((char *) this, otlayout))
|
||
continue;
|
||
}
|
||
#endif /* FC_CAPABILITY */
|
||
#ifdef HAVE_LIBOTF
|
||
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;
|
||
}
|
||
#endif /* HAVE_LIBOTF */
|
||
entity = ftfont_pattern_entity (fontset->fonts[i], frame, registry);
|
||
if (! NILP (entity))
|
||
val = Fcons (entity, val);
|
||
}
|
||
val = Fvconcat (1, &val);
|
||
}
|
||
else if (! NILP (AREF (spec, FONT_FAMILY_INDEX)))
|
||
val = ftfont_list_generic_family (spec, frame, registry);
|
||
goto finish;
|
||
|
||
err:
|
||
/* We come here because of unexpected error in fontconfig API call
|
||
(usually insufficient memory). */
|
||
val = Qnil;
|
||
|
||
finish:
|
||
if (charset && charset != cs_iso8859_1) FcCharSetDestroy (charset);
|
||
if (objset) FcObjectSetDestroy (objset);
|
||
if (fontset) FcFontSetDestroy (fontset);
|
||
if (langset) FcLangSetDestroy (langset);
|
||
if (pattern) FcPatternDestroy (pattern);
|
||
if (otspec)
|
||
{
|
||
if (otspec->nfeatures[0] > 0)
|
||
free (otspec->features[0]);
|
||
if (otspec->nfeatures[1] > 0)
|
||
free (otspec->features[1]);
|
||
free (otspec);
|
||
}
|
||
return val;
|
||
}
|
||
|
||
static Lisp_Object
|
||
ftfont_match (frame, spec)
|
||
Lisp_Object frame, spec;
|
||
{
|
||
Lisp_Object extra, val, entity;
|
||
FcPattern *pattern = NULL, *match = NULL;
|
||
FcResult result;
|
||
|
||
if (! fc_initialized)
|
||
{
|
||
FcInit ();
|
||
fc_initialized = 1;
|
||
}
|
||
|
||
extra = AREF (spec, FONT_EXTRA_INDEX);
|
||
val = assq_no_quit (QCname, extra);
|
||
if (! CONSP (val) || ! STRINGP (XCDR (val)))
|
||
return Qnil;
|
||
|
||
entity = Qnil;
|
||
pattern = FcNameParse (SDATA (XCDR (val)));
|
||
if (pattern)
|
||
{
|
||
if (FcConfigSubstitute (NULL, pattern, FcMatchPattern) == FcTrue)
|
||
{
|
||
FcDefaultSubstitute (pattern);
|
||
match = FcFontMatch (NULL, pattern, &result);
|
||
if (match)
|
||
{
|
||
entity = ftfont_pattern_entity (match, frame, Qunicode_bmp);
|
||
FcPatternDestroy (match);
|
||
}
|
||
}
|
||
FcPatternDestroy (pattern);
|
||
}
|
||
|
||
return entity;
|
||
}
|
||
|
||
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;
|
||
objset = FcObjectSetBuild (FC_FAMILY, NULL);
|
||
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)
|
||
list = Fcons (intern_downcase ((char *) str, strlen ((char *) str)),
|
||
list);
|
||
}
|
||
|
||
finish:
|
||
if (objset) FcObjectSetDestroy (objset);
|
||
if (fontset) FcFontSetDestroy (fontset);
|
||
if (pattern) FcPatternDestroy (pattern);
|
||
|
||
return list;
|
||
}
|
||
|
||
|
||
static void
|
||
ftfont_free_entity (entity)
|
||
Lisp_Object entity;
|
||
{
|
||
Lisp_Object val = AREF (entity, FONT_EXTRA_INDEX);
|
||
FcPattern *pattern = XSAVE_VALUE (val)->pointer;
|
||
|
||
FcPatternDestroy (pattern);
|
||
}
|
||
|
||
static struct font *
|
||
ftfont_open (f, entity, pixel_size)
|
||
FRAME_PTR f;
|
||
Lisp_Object entity;
|
||
int pixel_size;
|
||
{
|
||
struct ftfont_info *ftfont_info;
|
||
struct font *font;
|
||
FT_Face ft_face;
|
||
FT_Size ft_size;
|
||
FT_UInt size;
|
||
Lisp_Object val;
|
||
FcPattern *pattern;
|
||
FcChar8 *file;
|
||
int spacing;
|
||
char *name;
|
||
int len;
|
||
|
||
val = AREF (entity, FONT_EXTRA_INDEX);
|
||
if (XTYPE (val) != Lisp_Misc
|
||
|| XMISCTYPE (val) != Lisp_Misc_Save_Value)
|
||
return NULL;
|
||
pattern = XSAVE_VALUE (val)->pointer;
|
||
if (XSAVE_VALUE (val)->integer == 0)
|
||
{
|
||
/* We have not yet created FT_Face for this font. */
|
||
if (! ft_library
|
||
&& FT_Init_FreeType (&ft_library) != 0)
|
||
return NULL;
|
||
if (FcPatternGetString (pattern, FC_FILE, 0, &file) != FcResultMatch)
|
||
return NULL;
|
||
if (FT_New_Face (ft_library, (char *) file, 0, &ft_face) != 0)
|
||
return NULL;
|
||
FcPatternAddFTFace (pattern, FC_FT_FACE, ft_face);
|
||
ft_size = ft_face->size;
|
||
}
|
||
else
|
||
{
|
||
if (FcPatternGetFTFace (pattern, FC_FT_FACE, 0, &ft_face)
|
||
!= FcResultMatch)
|
||
return NULL;
|
||
if (FT_New_Size (ft_face, &ft_size) != 0)
|
||
return NULL;
|
||
if (FT_Activate_Size (ft_size) != 0)
|
||
{
|
||
FT_Done_Size (ft_size);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
size = XINT (AREF (entity, FONT_SIZE_INDEX));
|
||
if (size == 0)
|
||
size = pixel_size;
|
||
if (FT_Set_Pixel_Sizes (ft_face, size, size) != 0)
|
||
{
|
||
if (XSAVE_VALUE (val)->integer == 0)
|
||
FT_Done_Face (ft_face);
|
||
return NULL;
|
||
}
|
||
|
||
ftfont_info = malloc (sizeof (struct ftfont_info));
|
||
if (! ftfont_info)
|
||
return NULL;
|
||
ftfont_info->ft_size = ft_size;
|
||
#ifdef HAVE_LIBOTF
|
||
ftfont_info->maybe_otf = ft_face->face_flags & FT_FACE_FLAG_SFNT;
|
||
ftfont_info->otf = NULL;
|
||
#endif /* HAVE_LIBOTF */
|
||
|
||
font = (struct font *) ftfont_info;
|
||
font->format = ftfont_font_format (pattern);
|
||
font->entity = entity;
|
||
font->pixel_size = size;
|
||
font->driver = &ftfont_driver;
|
||
len = 96;
|
||
name = malloc (len);
|
||
while (name && font_unparse_fcname (entity, pixel_size, name, len) < 0)
|
||
{
|
||
char *new = realloc (name, len += 32);
|
||
|
||
if (! new)
|
||
free (name);
|
||
name = new;
|
||
}
|
||
font->font.full_name = font->font.name = name;
|
||
font->file_name = (char *) file;
|
||
font->font.size = ft_face->size->metrics.max_advance >> 6;
|
||
if (font->font.size <= 0)
|
||
font->font.size = size;
|
||
font->font.charset = font->encoding_charset = font->repertory_charset = -1;
|
||
font->ascent = ft_face->size->metrics.ascender >> 6;
|
||
font->descent = - ft_face->size->metrics.descender >> 6;
|
||
font->font.height = font->ascent + font->descent;
|
||
if (FcPatternGetInteger (pattern, FC_SPACING, 0, &spacing) != FcResultMatch)
|
||
spacing = FC_PROPORTIONAL;
|
||
if (spacing != FC_PROPORTIONAL)
|
||
font->font.average_width = font->font.space_width = font->font.size;
|
||
else
|
||
{
|
||
int i;
|
||
|
||
font->font.average_width = font->font.space_width = 0;
|
||
for (i = 32; i < 127; i++)
|
||
{
|
||
if (FT_Load_Char (ft_face, i, FT_LOAD_DEFAULT) != 0)
|
||
break;
|
||
if (i == 32)
|
||
font->font.space_width = ft_face->glyph->metrics.horiAdvance >> 6;
|
||
font->font.average_width += ft_face->glyph->metrics.horiAdvance >> 6;
|
||
}
|
||
if (i == 127)
|
||
{
|
||
/* The font contains all ASCII printable characters. */
|
||
font->font.average_width /= 95;
|
||
}
|
||
else
|
||
{
|
||
if (i == 32)
|
||
font->font.space_width = font->font.size;
|
||
font->font.average_width = font->font.size;
|
||
}
|
||
}
|
||
|
||
/* Unfortunately FreeType doesn't provide a way to get minimum char
|
||
width. So, we use space_width instead. */
|
||
font->min_width = font->font.space_width;
|
||
|
||
font->font.baseline_offset = 0;
|
||
font->font.relative_compose = 0;
|
||
font->font.default_ascent = 0;
|
||
font->font.vertical_centering = 0;
|
||
|
||
(XSAVE_VALUE (val)->integer)++;
|
||
|
||
return font;
|
||
}
|
||
|
||
static void
|
||
ftfont_close (f, font)
|
||
FRAME_PTR f;
|
||
struct font *font;
|
||
{
|
||
struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
|
||
Lisp_Object entity = font->entity;
|
||
Lisp_Object val = AREF (entity, FONT_EXTRA_INDEX);
|
||
|
||
(XSAVE_VALUE (val)->integer)--;
|
||
if (XSAVE_VALUE (val)->integer == 0)
|
||
{
|
||
FT_Done_Face (ftfont_info->ft_size->face);
|
||
#ifdef HAVE_LIBOTF
|
||
if (ftfont_info->otf)
|
||
OTF_close (ftfont_info->otf);
|
||
#endif
|
||
}
|
||
else
|
||
FT_Done_Size (ftfont_info->ft_size);
|
||
|
||
free (font);
|
||
}
|
||
|
||
static int
|
||
ftfont_has_char (entity, c)
|
||
Lisp_Object entity;
|
||
int c;
|
||
{
|
||
Lisp_Object val;
|
||
FcPattern *pattern;
|
||
FcCharSet *charset;
|
||
|
||
val = AREF (entity, FONT_EXTRA_INDEX);
|
||
pattern = XSAVE_VALUE (val)->pointer;
|
||
if (FcPatternGetCharSet (pattern, FC_CHARSET, 0, &charset) != FcResultMatch)
|
||
return -1;
|
||
return (FcCharSetHasChar (charset, (FcChar32) c) == FcTrue);
|
||
}
|
||
|
||
static unsigned
|
||
ftfont_encode_char (font, c)
|
||
struct font *font;
|
||
int c;
|
||
{
|
||
struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
|
||
FT_Face ft_face = ftfont_info->ft_size->face;
|
||
FT_ULong charcode = c;
|
||
FT_UInt code = FT_Get_Char_Index (ft_face, charcode);
|
||
|
||
return (code > 0 ? code : FONT_INVALID_CODE);
|
||
}
|
||
|
||
static int
|
||
ftfont_text_extents (font, code, nglyphs, metrics)
|
||
struct font *font;
|
||
unsigned *code;
|
||
int nglyphs;
|
||
struct font_metrics *metrics;
|
||
{
|
||
struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
|
||
FT_Face ft_face = ftfont_info->ft_size->face;
|
||
int width = 0;
|
||
int i;
|
||
|
||
if (ftfont_info->ft_size != ft_face->size)
|
||
FT_Activate_Size (ftfont_info->ft_size);
|
||
if (metrics)
|
||
bzero (metrics, sizeof (struct font_metrics));
|
||
for (i = 0; i < nglyphs; i++)
|
||
{
|
||
if (FT_Load_Glyph (ft_face, code[i], FT_LOAD_DEFAULT) == 0)
|
||
{
|
||
FT_Glyph_Metrics *m = &ft_face->glyph->metrics;
|
||
|
||
if (metrics)
|
||
{
|
||
if (metrics->lbearing > width + (m->horiBearingX >> 6))
|
||
metrics->lbearing = width + (m->horiBearingX >> 6);
|
||
if (metrics->rbearing
|
||
< width + ((m->horiBearingX + m->width) >> 6))
|
||
metrics->rbearing
|
||
= width + ((m->horiBearingX + m->width) >> 6);
|
||
if (metrics->ascent < (m->horiBearingY >> 6))
|
||
metrics->ascent = m->horiBearingY >> 6;
|
||
if (metrics->descent > ((m->horiBearingY + m->height) >> 6))
|
||
metrics->descent = (m->horiBearingY + m->height) >> 6;
|
||
}
|
||
width += m->horiAdvance >> 6;
|
||
}
|
||
else
|
||
{
|
||
width += font->font.space_width;
|
||
}
|
||
}
|
||
if (metrics)
|
||
metrics->width = width;
|
||
|
||
return width;
|
||
}
|
||
|
||
static int
|
||
ftfont_get_bitmap (font, code, bitmap, bits_per_pixel)
|
||
struct font *font;
|
||
unsigned code;
|
||
struct font_bitmap *bitmap;
|
||
int bits_per_pixel;
|
||
{
|
||
struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
|
||
FT_Face ft_face = ftfont_info->ft_size->face;
|
||
FT_Int32 load_flags = FT_LOAD_RENDER;
|
||
|
||
if (ftfont_info->ft_size != ft_face->size)
|
||
FT_Activate_Size (ftfont_info->ft_size);
|
||
if (bits_per_pixel == 1)
|
||
{
|
||
#ifdef FT_LOAD_TARGET_MONO
|
||
load_flags |= FT_LOAD_TARGET_MONO;
|
||
#else
|
||
load_flags |= FT_LOAD_MONOCHROME;
|
||
#endif
|
||
}
|
||
else if (bits_per_pixel != 8)
|
||
/* We don't support such a rendering. */
|
||
return -1;
|
||
|
||
if (FT_Load_Glyph (ft_face, code, load_flags) != 0)
|
||
return -1;
|
||
bitmap->bits_per_pixel
|
||
= (ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO ? 1
|
||
: ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_GRAY ? 8
|
||
: ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD ? 8
|
||
: ft_face->glyph->bitmap.pixel_mode == FT_PIXEL_MODE_LCD_V ? 8
|
||
: -1);
|
||
if (bitmap->bits_per_pixel < 0)
|
||
/* We don't suport that kind of pixel mode. */
|
||
return -1;
|
||
bitmap->rows = ft_face->glyph->bitmap.rows;
|
||
bitmap->width = ft_face->glyph->bitmap.width;
|
||
bitmap->pitch = ft_face->glyph->bitmap.pitch;
|
||
bitmap->buffer = ft_face->glyph->bitmap.buffer;
|
||
bitmap->left = ft_face->glyph->bitmap_left;
|
||
bitmap->top = ft_face->glyph->bitmap_top;
|
||
bitmap->advance = ft_face->glyph->metrics.horiAdvance >> 6;
|
||
bitmap->extra = NULL;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
ftfont_anchor_point (font, code, index, x, y)
|
||
struct font *font;
|
||
unsigned code;
|
||
int index;
|
||
int *x, *y;
|
||
{
|
||
struct ftfont_info *ftfont_info = (struct ftfont_info *) font;
|
||
FT_Face ft_face = ftfont_info->ft_size->face;
|
||
|
||
if (ftfont_info->ft_size != ft_face->size)
|
||
FT_Activate_Size (ftfont_info->ft_size);
|
||
if (FT_Load_Glyph (ft_face, code, FT_LOAD_DEFAULT) != 0)
|
||
return -1;
|
||
if (ft_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE)
|
||
return -1;
|
||
if (index >= ft_face->glyph->outline.n_points)
|
||
return -1;
|
||
*x = ft_face->glyph->outline.points[index].x;
|
||
*y = ft_face->glyph->outline.points[index].y;
|
||
return 0;
|
||
}
|
||
|
||
#ifdef HAVE_LIBOTF
|
||
#ifdef HAVE_M17N_FLT
|
||
|
||
struct MFLTFontFT
|
||
{
|
||
MFLTFont flt_font;
|
||
struct font *font;
|
||
FT_Face ft_face;
|
||
OTF *otf;
|
||
};
|
||
|
||
static int
|
||
ftfont_get_glyph_id (font, gstring, from, to)
|
||
MFLTFont *font;
|
||
MFLTGlyphString *gstring;
|
||
int from, to;
|
||
{
|
||
struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
|
||
FT_Face ft_face = flt_font_ft->ft_face;
|
||
MFLTGlyph *g;
|
||
|
||
for (g = gstring->glyphs + from; from < to; g++, from++)
|
||
if (! g->encoded)
|
||
{
|
||
FT_UInt code = FT_Get_Char_Index (ft_face, g->code);
|
||
|
||
g->code = code > 0 ? code : FONT_INVALID_CODE;
|
||
g->encoded = 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
ftfont_get_metrics (font, gstring, from, to)
|
||
MFLTFont *font;
|
||
MFLTGlyphString *gstring;
|
||
int from, to;
|
||
{
|
||
struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
|
||
FT_Face ft_face = flt_font_ft->ft_face;
|
||
MFLTGlyph *g;
|
||
|
||
for (g = gstring->glyphs + from; from < to; g++, from++)
|
||
if (! g->measured)
|
||
{
|
||
if (g->code != FONT_INVALID_CODE)
|
||
{
|
||
FT_Glyph_Metrics *m;
|
||
|
||
if (FT_Load_Glyph (ft_face, g->code, FT_LOAD_DEFAULT) != 0)
|
||
abort ();
|
||
m = &ft_face->glyph->metrics;
|
||
|
||
g->lbearing = m->horiBearingX;
|
||
g->rbearing = m->horiBearingX + m->width;
|
||
g->ascent = m->horiBearingY;
|
||
g->descent = m->height - m->horiBearingY;
|
||
g->xadv = m->horiAdvance;
|
||
}
|
||
else
|
||
{
|
||
g->lbearing = 0;
|
||
g->rbearing = g->xadv = flt_font_ft->font->font.space_width << 6;
|
||
g->ascent = flt_font_ft->font->ascent << 6;
|
||
g->descent = flt_font_ft->font->descent << 6;
|
||
}
|
||
g->yadv = 0;
|
||
g->measured = 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
ftfont_check_otf (MFLTFont *font, MFLTOtfSpec *spec)
|
||
{
|
||
struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
|
||
OTF *otf = flt_font_ft->otf;
|
||
OTF_Tag *tags;
|
||
int i, n, negative;
|
||
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
if (! spec->features[i])
|
||
continue;
|
||
for (n = 0; spec->features[i][n]; n++);
|
||
tags = alloca (sizeof (OTF_Tag) * n);
|
||
for (n = 0, negative = 0; spec->features[i][n]; n++)
|
||
{
|
||
if (spec->features[i][n] == 0xFFFFFFFF)
|
||
negative = 1;
|
||
else if (negative)
|
||
tags[n - 1] = spec->features[i][n] | 0x80000000;
|
||
else
|
||
tags[n] = spec->features[i][n];
|
||
}
|
||
if (n - negative > 0
|
||
&& OTF_check_features (otf, i == 0, spec->script, spec->langsys,
|
||
tags, n - negative) != 1)
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
#define DEVICE_DELTA(table, size) \
|
||
(((size) >= (table).StartSize && (size) <= (table).EndSize) \
|
||
? (table).DeltaValue[(size) - (table).StartSize] << 6 \
|
||
: 0)
|
||
|
||
static void
|
||
adjust_anchor (FT_Face ft_face, OTF_Anchor *anchor,
|
||
unsigned code, int x_ppem, int y_ppem, int *x, int *y)
|
||
{
|
||
if (anchor->AnchorFormat == 2)
|
||
{
|
||
FT_Outline *outline;
|
||
int ap = anchor->f.f1.AnchorPoint;
|
||
|
||
FT_Load_Glyph (ft_face, (FT_UInt) code, FT_LOAD_MONOCHROME);
|
||
outline = &ft_face->glyph->outline;
|
||
if (ap < outline->n_points)
|
||
{
|
||
*x = outline->points[ap].x << 6;
|
||
*y = outline->points[ap].y << 6;
|
||
}
|
||
}
|
||
else if (anchor->AnchorFormat == 3)
|
||
{
|
||
if (anchor->f.f2.XDeviceTable.offset)
|
||
*x += DEVICE_DELTA (anchor->f.f2.XDeviceTable, x_ppem);
|
||
if (anchor->f.f2.YDeviceTable.offset)
|
||
*y += DEVICE_DELTA (anchor->f.f2.YDeviceTable, y_ppem);
|
||
}
|
||
}
|
||
|
||
static OTF_GlyphString otf_gstring;
|
||
|
||
static int
|
||
ftfont_drive_otf (font, spec, in, from, to, out, adjustment)
|
||
MFLTFont *font;
|
||
MFLTOtfSpec *spec;
|
||
MFLTGlyphString *in;
|
||
int from, to;
|
||
MFLTGlyphString *out;
|
||
MFLTGlyphAdjustment *adjustment;
|
||
{
|
||
struct MFLTFontFT *flt_font_ft = (struct MFLTFontFT *) font;
|
||
FT_Face ft_face = flt_font_ft->ft_face;
|
||
OTF *otf = flt_font_ft->otf;
|
||
int len = to - from;
|
||
int i, j, gidx;
|
||
OTF_Glyph *otfg;
|
||
char script[5], *langsys = NULL;
|
||
char *gsub_features = NULL, *gpos_features = NULL;
|
||
|
||
if (len == 0)
|
||
return from;
|
||
OTF_tag_name (spec->script, script);
|
||
if (spec->langsys)
|
||
{
|
||
langsys = alloca (5);
|
||
OTF_tag_name (spec->langsys, langsys);
|
||
}
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
char *p;
|
||
|
||
if (spec->features[i] && spec->features[i][1] != 0xFFFFFFFF)
|
||
{
|
||
for (j = 0; spec->features[i][j]; j++);
|
||
if (i == 0)
|
||
p = gsub_features = alloca (6 * j);
|
||
else
|
||
p = gpos_features = alloca (6 * j);
|
||
for (j = 0; spec->features[i][j]; j++)
|
||
{
|
||
if (spec->features[i][j] == 0xFFFFFFFF)
|
||
*p++ = '*', *p++ = ',';
|
||
else
|
||
{
|
||
OTF_tag_name (spec->features[i][j], p);
|
||
p[4] = ',';
|
||
p += 5;
|
||
}
|
||
}
|
||
*--p = '\0';
|
||
}
|
||
}
|
||
|
||
if (otf_gstring.size == 0)
|
||
{
|
||
otf_gstring.glyphs = (OTF_Glyph *) malloc (sizeof (OTF_Glyph) * len);
|
||
otf_gstring.size = len;
|
||
}
|
||
else if (otf_gstring.size < len)
|
||
{
|
||
otf_gstring.glyphs = (OTF_Glyph *) realloc (otf_gstring.glyphs,
|
||
sizeof (OTF_Glyph) * len);
|
||
otf_gstring.size = len;
|
||
}
|
||
otf_gstring.used = len;
|
||
memset (otf_gstring.glyphs, 0, sizeof (OTF_Glyph) * len);
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
otf_gstring.glyphs[i].c = in->glyphs[from + i].c;
|
||
otf_gstring.glyphs[i].glyph_id = in->glyphs[from + i].code;
|
||
}
|
||
|
||
OTF_drive_gdef (otf, &otf_gstring);
|
||
gidx = out->used;
|
||
|
||
if (gsub_features)
|
||
{
|
||
if (OTF_drive_gsub (otf, &otf_gstring, script, langsys, gsub_features)
|
||
< 0)
|
||
goto simple_copy;
|
||
if (out->allocated < out->used + otf_gstring.used)
|
||
return -2;
|
||
for (i = 0, otfg = otf_gstring.glyphs; i < otf_gstring.used; )
|
||
{
|
||
OTF_Glyph *endg;
|
||
MFLTGlyph *g;
|
||
int min_from, max_to;
|
||
int j;
|
||
|
||
g = out->glyphs + out->used;
|
||
*g = in->glyphs[from + otfg->f.index.from];
|
||
if (g->code != otfg->glyph_id)
|
||
{
|
||
g->c = 0;
|
||
g->code = otfg->glyph_id;
|
||
g->measured = 0;
|
||
}
|
||
out->used++;
|
||
min_from = g->from;
|
||
max_to = g->to;
|
||
if (otfg->f.index.from < otfg->f.index.to)
|
||
{
|
||
/* OTFG substitutes multiple glyphs in IN. */
|
||
for (j = from + otfg->f.index.from + 1;
|
||
j <= from + otfg->f.index.to; j++)
|
||
{
|
||
if (min_from > in->glyphs[j].from)
|
||
min_from = in->glyphs[j].from;
|
||
if (max_to < in->glyphs[j].to)
|
||
max_to = in->glyphs[j].to;
|
||
}
|
||
g->from = min_from;
|
||
g->to = max_to;
|
||
}
|
||
for (i++, otfg++; (i < otf_gstring.used
|
||
&& otfg->f.index.from == otfg[-1].f.index.from);
|
||
i++, otfg++)
|
||
{
|
||
g = out->glyphs + out->used;
|
||
*g = in->glyphs[from + otfg->f.index.to];
|
||
if (g->code != otfg->glyph_id)
|
||
{
|
||
g->c = 0;
|
||
g->code = otfg->glyph_id;
|
||
g->measured = 0;
|
||
}
|
||
out->used++;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (out->allocated < out->used + len)
|
||
return -2;
|
||
for (i = 0; i < len; i++)
|
||
out->glyphs[out->used++] = in->glyphs[from + i];
|
||
}
|
||
|
||
if (gpos_features)
|
||
{
|
||
MFLTGlyph *base = NULL, *mark = NULL, *g;
|
||
int x_ppem, y_ppem, x_scale, y_scale;
|
||
|
||
if (OTF_drive_gpos (otf, &otf_gstring, script, langsys, gpos_features)
|
||
< 0)
|
||
return to;
|
||
|
||
x_ppem = ft_face->size->metrics.x_ppem;
|
||
y_ppem = ft_face->size->metrics.y_ppem;
|
||
x_scale = ft_face->size->metrics.x_scale;
|
||
y_scale = ft_face->size->metrics.y_scale;
|
||
|
||
for (i = 0, otfg = otf_gstring.glyphs, g = out->glyphs + gidx;
|
||
i < otf_gstring.used; i++, otfg++, g++)
|
||
{
|
||
MFLTGlyph *prev;
|
||
|
||
if (! otfg->glyph_id)
|
||
continue;
|
||
switch (otfg->positioning_type)
|
||
{
|
||
case 0:
|
||
break;
|
||
case 1: /* Single */
|
||
case 2: /* Pair */
|
||
{
|
||
int format = otfg->f.f1.format;
|
||
|
||
if (format & OTF_XPlacement)
|
||
adjustment[i].xoff
|
||
= otfg->f.f1.value->XPlacement * x_scale / 0x10000;
|
||
if (format & OTF_XPlaDevice)
|
||
adjustment[i].xoff
|
||
+= DEVICE_DELTA (otfg->f.f1.value->XPlaDevice, x_ppem);
|
||
if (format & OTF_YPlacement)
|
||
adjustment[i].yoff
|
||
= - (otfg->f.f1.value->YPlacement * y_scale / 0x10000);
|
||
if (format & OTF_YPlaDevice)
|
||
adjustment[i].yoff
|
||
-= DEVICE_DELTA (otfg->f.f1.value->YPlaDevice, y_ppem);
|
||
if (format & OTF_XAdvance)
|
||
adjustment[i].xadv
|
||
+= otfg->f.f1.value->XAdvance * x_scale / 0x10000;
|
||
if (format & OTF_XAdvDevice)
|
||
adjustment[i].xadv
|
||
+= DEVICE_DELTA (otfg->f.f1.value->XAdvDevice, x_ppem);
|
||
if (format & OTF_YAdvance)
|
||
adjustment[i].yadv
|
||
+= otfg->f.f1.value->YAdvance * y_scale / 0x10000;
|
||
if (format & OTF_YAdvDevice)
|
||
adjustment[i].yadv
|
||
+= DEVICE_DELTA (otfg->f.f1.value->YAdvDevice, y_ppem);
|
||
adjustment[i].set = 1;
|
||
}
|
||
break;
|
||
case 3: /* Cursive */
|
||
/* Not yet supported. */
|
||
break;
|
||
case 4: /* Mark-to-Base */
|
||
case 5: /* Mark-to-Ligature */
|
||
if (! base)
|
||
break;
|
||
prev = base;
|
||
goto label_adjust_anchor;
|
||
default: /* i.e. case 6 Mark-to-Mark */
|
||
if (! mark)
|
||
break;
|
||
prev = mark;
|
||
|
||
label_adjust_anchor:
|
||
{
|
||
int base_x, base_y, mark_x, mark_y;
|
||
int this_from, this_to;
|
||
|
||
base_x = otfg->f.f4.base_anchor->XCoordinate * x_scale / 0x10000;
|
||
base_y = otfg->f.f4.base_anchor->YCoordinate * y_scale / 0x10000;
|
||
mark_x = otfg->f.f4.mark_anchor->XCoordinate * x_scale / 0x10000;
|
||
mark_y = otfg->f.f4.mark_anchor->YCoordinate * y_scale / 0x10000;;
|
||
|
||
if (otfg->f.f4.base_anchor->AnchorFormat != 1)
|
||
adjust_anchor (ft_face, otfg->f.f4.base_anchor,
|
||
prev->code, x_ppem, y_ppem, &base_x, &base_y);
|
||
if (otfg->f.f4.mark_anchor->AnchorFormat != 1)
|
||
adjust_anchor (ft_face, otfg->f.f4.mark_anchor, g->code,
|
||
x_ppem, y_ppem, &mark_x, &mark_y);
|
||
adjustment[i].xoff = (base_x - mark_x);
|
||
adjustment[i].yoff = - (base_y - mark_y);
|
||
adjustment[i].back = (g - prev);
|
||
adjustment[i].xadv = 0;
|
||
adjustment[i].advance_is_absolute = 1;
|
||
adjustment[i].set = 1;
|
||
this_from = g->from;
|
||
this_to = g->to;
|
||
for (j = 0; prev + j < g; j++)
|
||
{
|
||
if (this_from > prev[j].from)
|
||
this_from = prev[j].from;
|
||
if (this_to < prev[j].to)
|
||
this_to = prev[j].to;
|
||
}
|
||
for (; prev <= g; prev++)
|
||
{
|
||
prev->from = this_from;
|
||
prev->to = this_to;
|
||
}
|
||
}
|
||
}
|
||
if (otfg->GlyphClass == OTF_GlyphClass0)
|
||
base = mark = g;
|
||
else if (otfg->GlyphClass == OTF_GlyphClassMark)
|
||
mark = g;
|
||
else
|
||
base = g;
|
||
}
|
||
}
|
||
return to;
|
||
|
||
simple_copy:
|
||
if (out->allocated < out->used + len)
|
||
return -2;
|
||
font->get_metrics (font, in, from, to);
|
||
memcpy (out->glyphs + out->used, in->glyphs + from,
|
||
sizeof (MFLTGlyph) * len);
|
||
out->used += len;
|
||
return to;
|
||
}
|
||
|
||
static MFLTGlyphString gstring;
|
||
|
||
static int m17n_flt_initialized;
|
||
|
||
extern Lisp_Object QCfamily;
|
||
|
||
Lisp_Object
|
||
ftfont_shape_by_flt (lgstring, font, ft_face, otf)
|
||
Lisp_Object lgstring;
|
||
struct font *font;
|
||
FT_Face ft_face;
|
||
OTF *otf;
|
||
{
|
||
EMACS_UINT len = LGSTRING_LENGTH (lgstring);
|
||
EMACS_UINT i;
|
||
struct MFLTFontFT flt_font_ft;
|
||
|
||
if (! m17n_flt_initialized)
|
||
{
|
||
M17N_INIT ();
|
||
m17n_flt_initialized = 1;
|
||
}
|
||
|
||
for (i = 0; i < len; i++)
|
||
if (NILP (LGSTRING_GLYPH (lgstring, i)))
|
||
break;
|
||
len = i;
|
||
|
||
if (gstring.allocated == 0)
|
||
{
|
||
gstring.allocated = len * 2;
|
||
gstring.glyph_size = sizeof (MFLTGlyph);
|
||
gstring.glyphs = malloc (sizeof (MFLTGlyph) * gstring.allocated);
|
||
}
|
||
else if (gstring.allocated < len * 2)
|
||
{
|
||
gstring.allocated = len * 2;
|
||
gstring.glyphs = realloc (gstring.glyphs,
|
||
sizeof (MFLTGlyph) * gstring.allocated);
|
||
}
|
||
for (i = 0; i < len; i++)
|
||
gstring.glyphs[i].c = LGLYPH_CHAR (LGSTRING_GLYPH (lgstring, i));
|
||
gstring.used = len;
|
||
gstring.r2l = 0;
|
||
|
||
{
|
||
Lisp_Object family = Ffont_get (LGSTRING_FONT (lgstring), QCfamily);
|
||
|
||
if (NILP (family))
|
||
flt_font_ft.flt_font.family = Mnil;
|
||
else
|
||
flt_font_ft.flt_font.family = msymbol (SDATA (SYMBOL_NAME (family)));
|
||
}
|
||
flt_font_ft.flt_font.x_ppem = ft_face->size->metrics.x_ppem;
|
||
flt_font_ft.flt_font.y_ppem = ft_face->size->metrics.y_ppem;
|
||
flt_font_ft.flt_font.get_glyph_id = ftfont_get_glyph_id;
|
||
flt_font_ft.flt_font.get_metrics = ftfont_get_metrics;
|
||
flt_font_ft.flt_font.check_otf = ftfont_check_otf;
|
||
flt_font_ft.flt_font.drive_otf = ftfont_drive_otf;
|
||
flt_font_ft.flt_font.internal = NULL;
|
||
flt_font_ft.font = font;
|
||
flt_font_ft.ft_face = ft_face;
|
||
flt_font_ft.otf = otf;
|
||
for (i = 0; i < 3; i++)
|
||
{
|
||
int result = mflt_run (&gstring, 0, len, &flt_font_ft.flt_font, NULL);
|
||
if (result != -2)
|
||
break;
|
||
gstring.allocated += gstring.allocated;
|
||
gstring.glyphs = realloc (gstring.glyphs,
|
||
sizeof (MFLTGlyph) * gstring.allocated);
|
||
}
|
||
if (gstring.used > LGSTRING_LENGTH (lgstring))
|
||
return Qnil;
|
||
for (i = 0; i < gstring.used; i++)
|
||
{
|
||
MFLTGlyph *g = gstring.glyphs + i;
|
||
|
||
g->from = LGLYPH_FROM (LGSTRING_GLYPH (lgstring, g->from));
|
||
g->to = LGLYPH_TO (LGSTRING_GLYPH (lgstring, g->to));
|
||
}
|
||
|
||
for (i = 0; i < gstring.used; i++)
|
||
{
|
||
Lisp_Object lglyph = LGSTRING_GLYPH (lgstring, i);
|
||
MFLTGlyph *g = gstring.glyphs + i;
|
||
|
||
if (NILP (lglyph))
|
||
{
|
||
lglyph = Fmake_vector (make_number (LGLYPH_SIZE), Qnil);
|
||
LGSTRING_SET_GLYPH (lgstring, i, lglyph);
|
||
}
|
||
LGLYPH_SET_FROM (lglyph, g->from);
|
||
LGLYPH_SET_TO (lglyph, g->to);
|
||
LGLYPH_SET_CHAR (lglyph, g->c);
|
||
LGLYPH_SET_CODE (lglyph, g->code);
|
||
LGLYPH_SET_WIDTH (lglyph, g->xadv >> 6);
|
||
LGLYPH_SET_LBEARING (lglyph, g->lbearing >> 6);
|
||
LGLYPH_SET_RBEARING (lglyph, g->rbearing >> 6);
|
||
LGLYPH_SET_ASCENT (lglyph, g->ascent >> 6);
|
||
LGLYPH_SET_DESCENT (lglyph, g->descent >> 6);
|
||
if (g->adjusted)
|
||
{
|
||
Lisp_Object vec;
|
||
|
||
vec = Fmake_vector (make_number (3), Qnil);
|
||
ASET (vec, 0, make_number (g->xoff >> 6));
|
||
ASET (vec, 1, make_number (g->yoff >> 6));
|
||
ASET (vec, 2, make_number (g->xadv >> 6));
|
||
LGLYPH_SET_ADJUSTMENT (lglyph, vec);
|
||
}
|
||
}
|
||
return make_number (i);
|
||
}
|
||
|
||
Lisp_Object
|
||
ftfont_shape (lgstring)
|
||
Lisp_Object lgstring;
|
||
{
|
||
struct font *font;
|
||
struct ftfont_info *ftfont_info;
|
||
|
||
CHECK_FONT_GET_OBJECT (LGSTRING_FONT (lgstring), font);
|
||
ftfont_info = (struct ftfont_info *) font;
|
||
if (! ftfont_info->maybe_otf)
|
||
return make_number (0);
|
||
if (! ftfont_info->otf)
|
||
{
|
||
OTF *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 make_number (0);
|
||
}
|
||
|
||
ftfont_info->otf = otf;
|
||
}
|
||
|
||
return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
|
||
ftfont_info->otf);
|
||
}
|
||
|
||
#endif /* HAVE_M17N_FLT */
|
||
#endif /* HAVE_LIBOTF */
|
||
|
||
Lisp_Object
|
||
ftfont_font_format (FcPattern *pattern)
|
||
{
|
||
FcChar8 *str;
|
||
|
||
#ifdef FC_FONTFORMAT
|
||
if (FcPatternGetString (pattern, FC_FONTFORMAT, 0, &str) != FcResultMatch)
|
||
return Qnil;
|
||
if (strcmp ((char *) str, "TrueType") == 0)
|
||
return intern ("truetype");
|
||
if (strcmp ((char *) str, "Type 1") == 0)
|
||
return intern ("type1");
|
||
if (strcmp ((char *) str, "PCF") == 0)
|
||
return intern ("pcf");
|
||
if (strcmp ((char *) str, "BDF") == 0)
|
||
return intern ("bdf");
|
||
#else /* not FC_FONTFORMAT */
|
||
if (FcPatternGetString (pattern, FC_FILE, 0, &str) != FcResultMatch)
|
||
return Qnil;
|
||
if (strcasestr ((char *) str, ".ttf") == 0)
|
||
return intern ("truetype");
|
||
if (strcasestr ((char *) str, "pfb") == 0)
|
||
return intern ("type1");
|
||
if (strcasestr ((char *) str, "pcf") == 0)
|
||
return intern ("pcf");
|
||
if (strcasestr ((char *) str, "bdf") == 0)
|
||
return intern ("bdf");
|
||
#endif /* not FC_FONTFORMAT */
|
||
return intern ("unknown");
|
||
}
|
||
|
||
|
||
void
|
||
syms_of_ftfont ()
|
||
{
|
||
DEFSYM (Qfreetype, "freetype");
|
||
DEFSYM (Qmonospace, "monospace");
|
||
DEFSYM (Qsans_serif, "sans-serif");
|
||
DEFSYM (Qserif, "serif");
|
||
DEFSYM (Qmono, "mono");
|
||
DEFSYM (Qsans, "sans");
|
||
DEFSYM (Qsans__serif, "sans serif");
|
||
|
||
staticpro (&freetype_font_cache);
|
||
freetype_font_cache = Fcons (Qt, Qnil);
|
||
|
||
staticpro (&ftfont_generic_family_list);
|
||
ftfont_generic_family_list
|
||
= Fcons (Fcons (Qmonospace, Qt),
|
||
Fcons (Fcons (Qsans_serif, Qt),
|
||
Fcons (Fcons (Qsans, Qt), Qnil)));
|
||
|
||
ftfont_driver.type = Qfreetype;
|
||
register_font_driver (&ftfont_driver, NULL);
|
||
}
|
||
|
||
/* arch-tag: 7cfa432c-33a6-4988-83d2-a82ed8604aca
|
||
(do not change this comment) */
|