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/* ttf.h
Parser and writer for truetype font files.
Part of the swftools package.
Copyright (c) 2010 Matthias Kramm <kramm@quiss.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef __ttf_h__
#define __ttf_h__
#include "types.h"
typedef struct _ttf_table {
U32 id;
struct _ttf_table*prev;
struct _ttf_table*next;
U8*data;
int len;
int memsize;
} ttf_table_t;
typedef struct _table_maxp {
U16 maxPoints;
U16 maxContours;
U16 maxComponentPoints;
U16 maxComponentContours;
U16 maxZones;
U16 maxTwilightPoints;
U16 maxStorage;
U16 maxFunctionDefs;
U16 maxInstructionDefs;
U16 maxStackElements;
U16 maxSizeOfInstructions;
U16 maxComponentElements;
U16 maxComponentDepth;
} table_maxp_t;
typedef struct _table_os2 {
S16 xAvgCharWidth;
U16 usWeightClass;
U16 usWidthClass;
U16 ySubscriptXSize;
U16 ySubscriptYSize;
U16 ySubscriptXOffset;
U16 ySubscriptYOffset;
U16 ySuperscriptXSize;
U16 ySuperscriptYSize;
U16 ySuperscriptXOffset;
U16 ySuperscriptYOffset;
U16 yStrikeoutSize;
U16 yStrikeoutPosition;
U16 sFamilyClass;
U8 panose_FamilyType;
U8 panose_SerifStyle;
U8 panose_Weight;
U8 panose_Proportion;
U8 panose_Contrast;
U8 panose_StrokeVariation;
U8 panose_ArmStyle;
U8 panose_Letterform;
U8 panose_Midline;
U8 panose_XHeight;
U32 ulCharRange[4];
U16 fsSelection;
U16 fsFirstCharIndex;
U16 fsLastCharIndex;
S16 sTypoAscender;
S16 sTypoDescender;
S16 sTypoLineGap;
U16 usWinAscent;
U16 usWinDescent;
/* for version >= 0x0001 */
U32 ulCodePageRange1;
U32 ulCodePageRange2;
/* for version >= 0x0002 */
S16 sxHeight;
S16 sCapHeight;
U16 usDefaultChar;
U16 usBreakChar;
U16 usMaxContext;
} table_os2_t;
typedef struct _table_hea
{
U16 advanceWidthMax;
S16 minLeftSideBearing;
S16 minRightSideBearing;
S16 xMaxExtent;
S16 caretSlopeRise;
S16 caretSlopeRun;
S16 caretOffset;
} table_hea_t;
#define GLYPH_ON_CURVE 0x01
#define GLYPH_CONTOUR_START 0x40
#define GLYPH_CONTOUR_END 0x80
typedef U32 unicode_t;
typedef struct _ttfpoint {
int x,y;
U8 flags;
} ttfpoint_t;
typedef struct _ttfglyph {
U16 advance;
S16 bearing;
S16 xmin,ymin,xmax,ymax;
int code_size;
U8*code;
int num_points;
ttfpoint_t*points;
} ttfglyph_t;
typedef struct _table_head {
U16 flags;
U16 units_per_em;
S16 xmin,ymin,xmax,ymax;
U16 macStyle;
U16 lowest_readable_size;
S16 dir_hint;
} table_head_t;
typedef struct _table_post {
U32 italic_angle;
U16 underline_position;
U16 underline_thickness;
} table_post_t;
typedef struct _table_cvt {
S16*values;
int num;
} table_cvt_t;
typedef struct _table_gasp {
int num;
struct {
U16 size;
U16 behaviour;
} *records;
} table_gasp_t;
typedef struct _table_code {
U8*code;
int size;
} table_code_t;
typedef struct _ttf {
char*family_name; /* nameId 1 */
char*subfamily_name; /* nameId 2 */
char*font_uid; /* nameId 3 */
char*full_name; /* nameId 4 */
char*version_string; /* nameId 5 */
char*postscript_name; /* nameId 6 */
ttf_table_t*tables;
table_head_t*head;
table_maxp_t*maxp;
table_os2_t*os2;
table_hea_t*hea;
table_post_t*post;
table_cvt_t*cvt;
table_gasp_t*gasp;
table_code_t*prep;
table_code_t*fpgm;
U16 flags;
char is_vertical;
S16 ascent;
S16 descent; // ymin, *not* negative ymin
S16 lineGap;
int num_glyphs;
ttfglyph_t*glyphs;
int unicode_size;
unicode_t*unicode;
U32 version;
} ttf_t;
ttf_t*ttf_new();
ttf_t* ttf_open(const char*filename);
void ttf_reduce(ttf_t*ttf);
ttf_t*ttf_load(void*data, int length);
ttf_table_t*ttf_addtable(ttf_t*ttf, U32 tag);
void ttf_create_truetype_tables(ttf_t*ttf);
void ttf_dump(ttf_t*ttf);
void ttf_destroy(ttf_t*ttf);
void ttf_save(ttf_t*ttf, const char*filename);
void ttf_save_eot(ttf_t*ttf, const char*filename);
#endif
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