fcfreetype.c 6.56 KB
Newer Older
Keith Packard's avatar
Keith Packard committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
/*
 * $XFree86: $
 *
 * Copyright  2001 Keith Packard, member of The XFree86 Project, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "fcint.h"
#include <freetype/freetype.h>
#include <freetype/internal/ftobjs.h>
#include <freetype/tttables.h>
#include <fontconfig/fcfreetype.h>

static const struct {
    int	    bit;
36
    FcChar8 *name;
Keith Packard's avatar
Keith Packard committed
37
} FcCodePageRange[] = {
38 39 40 41 42 43 44 45 46
    { 0,	(FcChar8 *) FC_LANG_LATIN_1 },
    { 1,	(FcChar8 *) FC_LANG_LATIN_2_EASTERN_EUROPE },
    { 2,	(FcChar8 *) FC_LANG_CYRILLIC },
    { 3,	(FcChar8 *) FC_LANG_GREEK },
    { 4,	(FcChar8 *) FC_LANG_TURKISH },
    { 5,	(FcChar8 *) FC_LANG_HEBREW },
    { 6,	(FcChar8 *) FC_LANG_ARABIC },
    { 7,	(FcChar8 *) FC_LANG_WINDOWS_BALTIC },
    { 8,	(FcChar8 *) FC_LANG_VIETNAMESE },
Keith Packard's avatar
Keith Packard committed
47
/* 9-15 reserved for Alternate ANSI */
48 49 50 51 52 53
    { 16,	(FcChar8 *) FC_LANG_THAI },
    { 17,	(FcChar8 *) FC_LANG_JAPANESE },
    { 18,	(FcChar8 *) FC_LANG_SIMPLIFIED_CHINESE },
    { 19,	(FcChar8 *) FC_LANG_KOREAN_WANSUNG },
    { 20,	(FcChar8 *) FC_LANG_TRADITIONAL_CHINESE },
    { 21,	(FcChar8 *) FC_LANG_KOREAN_JOHAB },
Keith Packard's avatar
Keith Packard committed
54
/* 22-28 reserved for Alternate ANSI & OEM */
55 56 57
    { 29,	(FcChar8 *) FC_LANG_MACINTOSH },
    { 30,	(FcChar8 *) FC_LANG_OEM },
    { 31,	(FcChar8 *) FC_LANG_SYMBOL },
Keith Packard's avatar
Keith Packard committed
58
/* 32-47 reserved for OEM */
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
    { 48,	(FcChar8 *) FC_LANG_IBM_GREEK },
    { 49,	(FcChar8 *) FC_LANG_MSDOS_RUSSIAN },
    { 50,	(FcChar8 *) FC_LANG_MSDOS_NORDIC },
    { 51,	(FcChar8 *) FC_LANG_ARABIC_864 },
    { 52,	(FcChar8 *) FC_LANG_MSDOS_CANADIAN_FRENCH },
    { 53,	(FcChar8 *) FC_LANG_HEBREW_862 },
    { 54,	(FcChar8 *) FC_LANG_MSDOS_ICELANDIC },
    { 55,	(FcChar8 *) FC_LANG_MSDOS_PORTUGUESE },
    { 56,	(FcChar8 *) FC_LANG_IBM_TURKISH },
    { 57,	(FcChar8 *) FC_LANG_IBM_CYRILLIC },
    { 58,	(FcChar8 *) FC_LANG_LATIN_2 },
    { 59,	(FcChar8 *) FC_LANG_MSDOS_BALTIC },
    { 60,	(FcChar8 *) FC_LANG_GREEK_437_G },
    { 61,	(FcChar8 *) FC_LANG_ARABIC_ASMO_708 },
    { 62,	(FcChar8 *) FC_LANG_WE_LATIN_1 },
    { 63,	(FcChar8 *) FC_LANG_US },
Keith Packard's avatar
Keith Packard committed
75 76 77 78 79
};

#define NUM_CODE_PAGE_RANGE (sizeof FcCodePageRange / sizeof FcCodePageRange[0])

FcPattern *
80 81 82 83
FcFreeTypeQuery (const FcChar8	*file,
		 int		id,
		 FcBlanks	*blanks,
		 int		*count)
Keith Packard's avatar
Keith Packard committed
84
{
85 86 87 88 89 90 91 92 93
    FT_Face	    face;
    FcPattern	    *pat;
    int		    slant;
    int		    weight;
    int		    i;
    FcCharSet	    *cs;
    FT_Library	    ftLibrary;
    const FcChar8   *family;
    TT_OS2	    *os2;
Keith Packard's avatar
Keith Packard committed
94 95 96 97

    if (FT_Init_FreeType (&ftLibrary))
	return 0;
    
98
    if (FT_New_Face (ftLibrary, (char *) file, id, &face))
Keith Packard's avatar
Keith Packard committed
99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129
	goto bail;

    *count = face->num_faces;

    pat = FcPatternCreate ();
    if (!pat)
	goto bail0;

    if (!FcPatternAddBool (pat, FC_OUTLINE,
			   (face->face_flags & FT_FACE_FLAG_SCALABLE) != 0))
	goto bail1;

    if (!FcPatternAddBool (pat, FC_SCALABLE,
			   (face->face_flags & FT_FACE_FLAG_SCALABLE) != 0))
	goto bail1;


    slant = FC_SLANT_ROMAN;
    if (face->style_flags & FT_STYLE_FLAG_ITALIC)
	slant = FC_SLANT_ITALIC;

    if (!FcPatternAddInteger (pat, FC_SLANT, slant))
	goto bail1;

    weight = FC_WEIGHT_MEDIUM;
    if (face->style_flags & FT_STYLE_FLAG_BOLD)
	weight = FC_WEIGHT_BOLD;

    if (!FcPatternAddInteger (pat, FC_WEIGHT, weight))
	goto bail1;

130
    family = (FcChar8 *) face->family_name;
Keith Packard's avatar
Keith Packard committed
131 132
    if (!family)
    {
133
	family = (FcChar8 *) strrchr ((char *) file, '/');
Keith Packard's avatar
Keith Packard committed
134 135 136 137 138 139 140 141 142 143
	if (family)
	    family++;
	else
	    family = file;
    }
    if (!FcPatternAddString (pat, FC_FAMILY, family))
	goto bail1;

    if (face->style_name)
    {
144
	if (!FcPatternAddString (pat, FC_STYLE, (FcChar8 *) face->style_name))
Keith Packard's avatar
Keith Packard committed
145 146 147 148 149 150 151 152 153
	    goto bail1;
    }

    if (!FcPatternAddString (pat, FC_FILE, file))
	goto bail1;

    if (!FcPatternAddInteger (pat, FC_INDEX, id))
	goto bail1;

154
    if (!FcPatternAddString (pat, FC_SOURCE, (FcChar8 *) "FreeType"))
Keith Packard's avatar
Keith Packard committed
155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236
	goto bail1;

#if 0
    if ((face->face_flags & FT_FACE_FLAG_FIXED_WIDTH) != 0)
	if (!FcPatternAddInteger (pat, FC_SPACING, FC_MONO))
	    goto bail1;
#endif

    cs = FcFreeTypeCharSet (face, blanks);
    if (!cs)
	goto bail1;

    /*
     * Skip over PCF fonts that have no encoded characters; they're
     * usually just Unicode fonts transcoded to some legacy encoding
     */
    if (FcCharSetCount (cs) == 0)
    {
	if (!strcmp(FT_MODULE_CLASS(&face->driver->root)->module_name, "pcf"))
	    goto bail2;
    }

    if (!FcPatternAddCharSet (pat, FC_CHARSET, cs))
	goto bail2;
    /*
     * Drop our reference to the charset
     */
    FcCharSetDestroy (cs);
    
    if (!(face->face_flags & FT_FACE_FLAG_SCALABLE))
    {
	for (i = 0; i < face->num_fixed_sizes; i++)
	    if (!FcPatternAddDouble (pat, FC_PIXEL_SIZE,
				     (double) face->available_sizes[i].height))
		goto bail1;
	if (!FcPatternAddBool (pat, FC_ANTIALIAS, FcFalse))
	    goto bail1;
    }

    /*
     * Get the OS/2 table and poke about
     */
    os2 = (TT_OS2 *) FT_Get_Sfnt_Table (face, ft_sfnt_os2);
    if (os2 && os2->version >= 0x0001 && os2->version != 0xffff)
    {
	for (i = 0; i < NUM_CODE_PAGE_RANGE; i++)
	{
	    FT_ULong	bits;
	    int		bit;
	    if (FcCodePageRange[i].bit < 32)
	    {
		bits = os2->ulCodePageRange1;
		bit = FcCodePageRange[i].bit;
	    }
	    else
	    {
		bits = os2->ulCodePageRange2;
		bit = FcCodePageRange[i].bit - 32;
	    }
	    if (bits & (1 << bit))
	    {
		if (!FcPatternAddString (pat, FC_LANG,
					 FcCodePageRange[i].name))
		    goto bail1;
	    }
	}
    }

    FT_Done_Face (face);
    FT_Done_FreeType (ftLibrary);
    return pat;

bail2:
    FcCharSetDestroy (cs);
bail1:
    FcPatternDestroy (pat);
bail0:
    FT_Done_Face (face);
bail:
    FT_Done_FreeType (ftLibrary);
    return 0;
}