added truetype parser

[swftools.git] / lib / ttf.h

diff --git a/lib/ttf.h b/lib/ttf.h
new file mode 100644 (file)
index 0000000..a22c87e
--- /dev/null
+++ b/lib/ttf.h
@@ -0,0 +1,164 @@
+/* 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 fsType;
+    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];
+    U8 achVendID[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
+{
+    S16 ascent;
+    S16 descent;
+    S16 lineGap;
+    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 struct _ttfpoint {
+    int x,y;
+    U8 flags;
+} ttfpoint_t;
+typedef struct _ttfglyph {
+    U16 advance;
+    U16 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 _ttf {
+    ttf_table_t*tables;
+
+    table_head_t*head;
+    table_maxp_t*maxp;
+    table_os2_t*os2;
+    table_hea_t*hea;
+
+    U16 flags;
+    char is_vertical;
+    int num_glyphs;
+    ttfglyph_t*glyphs;
+
+    U32 version;
+} ttf_t;
+
+
+ttf_t*load_ttf(void*data, int length);
+ttf_table_t*ttf_addtable(ttf_t*ttf, U32 tag);
+
+#endif