font.h

flash swf file player

/*
    Ming, an SWF output library
    Copyright (C) 2001  Opaque Industries - http://www.opaque.net/

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* font.h
 * 
 * $Id: font.h,v 1.17 2003/11/08 18:24:57 whamann Exp $
 *
 * Notice: This header file contains declarations of functions and types that
 * are just used internally. All library functions and types that are supposed
 * to be publicly accessable are defined in ./src/ming.h.
 */

#ifndef SWF_FONT_H_INCLUDED
#define SWF_FONT_H_INCLUDED

#include "ming.h"
#include "rect.h"
#include "text.h"
#include "block.h"

#define SWF_FONT_HASLAYOUT    (1<<7)
#define SWF_FONT_UNICODE      (1<<6)
#define SWF_FONT_SHIFTJIS     (1<<5)
#define SWF_FONT_ANSI         (1<<4)
#define SWF_FONT_WIDEOFFSETS  (1<<3)
#define SWF_FONT_WIDECODES    (1<<2)
#define SWF_FONT_ISBOLD       (1<<1)
#define SWF_FONT_ISITALIC     (1<<0)

struct SWFFont_s
{
	// even though SWFFont isn't represented in the SWF file,
	// this lets us call destroySWFBlock(font)
	struct SWFBlock_s block;

	byte *name;
	byte flags;

	int nGlyphs;

	// map from glyphs to char codes, loaded from fdb file
	unsigned short* glyphToCode; 

	// list of pointers to glyph shapes
	byte** glyphOffset;

	// shape table, mapped in from file
	byte* shapes;

	// glyph metrics
	short* advances;
	struct SWFRect_s* bounds;

	// map from char codes to glyphs, constructed from glyphToCode map
	// XXX - would be nice if this was in the fdb..
	union
	{
		byte* charMap;
		unsigned short** wideMap; // array of 256 arrays of 256 shorts
	} codeToGlyph;

	// font metrics
	short ascent;
	short descent;
	short leading;

	// font's kern table, if one is defined
	// XXX - should be sorted for faster lookups
	unsigned short kernCount;
	union
	{	struct kernInfo* k;
		struct kernInfo16* w;
	} kernTable;
};


byte* SWFFont_findGlyph(SWFFont font, unsigned short c);

const char* SWFFont_getName(SWFFont font);

byte SWFFont_getFlags(SWFFont font);

int SWFFont_getScaledWideStringWidth(SWFFont font,
	              		     const unsigned short* string, int len);

int SWFFont_getScaledUTF8StringWidth(SWFFont font, const char* string);

int SWFFont_getScaledStringWidth(SWFFont font, const char* string);

short SWFFont_getScaledAscent(SWFFont font);

short SWFFont_getScaledDescent(SWFFont font);

short SWFFont_getScaledLeading(SWFFont font);

SWFRect SWFFont_getGlyphBounds(SWFFont font, unsigned short c);

int SWFFont_getCharacterAdvance(SWFFont font, unsigned short c);

int SWFFont_getCharacterKern(SWFFont font, unsigned short c1, unsigned short c2);


/* SWFFontCharacter is a movie's instance of a font */

SWFFontCharacter newSWFFontCharacter(SWFFont font);

SWFFontCharacter newSWFDummyFontCharacter();

void destroySWFFontCharacter(SWFFontCharacter fontCharacter);

void SWFFontCharacter_exportCharacterRange(SWFFontCharacter font,
			     unsigned short start, unsigned short end);

void SWFFontCharacter_addWideChars(SWFFontCharacter font, unsigned short *string, int len);

void SWFFontCharacter_addChars(SWFFontCharacter font, const char *string);

void SWFFontCharacter_addUTF8Chars(SWFFontCharacter font, const char *string);

SWFFont SWFFontCharacter_getFont(SWFFontCharacter font);

int SWFFontCharacter_getNGlyphs(SWFFontCharacter font);

void SWFFontCharacter_addTextToList(SWFFontCharacter font, SWFTextRecord text);

unsigned short SWFFontCharacter_getGlyphCode(SWFFontCharacter font, 
					     unsigned short c);

#endif /* SWF_FONT_H_INCLUDED */