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/*************************************************************************
** FontEngine.h **
** **
** This file is part of dvisvgm -- the DVI to SVG converter **
** Copyright (C) 2005-2012 Martin Gieseking <martin.gieseking@uos.de> **
** **
** 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 3 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, see <http://www.gnu.org/licenses/>. **
*************************************************************************/
#ifndef FONTENGINE_H
#define FONTENGINE_H
#include <ft2build.h>
#include FT_FREETYPE_H
#include <map>
#include <string>
#include <vector>
#include "types.h"
#include "Glyph.h"
struct Font;
/** This class provides methods to handle font files and font data.
* It's a wrapper for the Freetype font library. */
class FontEngine
{
public:
~FontEngine ();
static FontEngine& instance ();
static std::string version ();
void setDeviceResolution (int x, int y);
bool setFont (const Font &font);
bool setCharSize (int ptSize);
bool traceOutline (unsigned char chr, Glyph &glyph, bool scale=true) const;
bool traceOutline (const char *name, Glyph &glyph, bool scale) const;
const char* getFamilyName () const;
const char* getStyleName () const;
int getUnitsPerEM () const;
int getAscender () const;
int getDescender () const;
int getHAdvance () const;
int getHAdvance (unsigned int c) const;
int getHAdvance (const char *name) const;
int getFirstChar () const;
int getNextChar () const;
int getCharSize () const {return _ptSize;}
std::vector<int> getPanose () const;
std::string getGlyphName (unsigned int c) const;
int getCharByGlyphName (const char *name) const;
void buildTranslationMap (std::map<UInt32,UInt32> &translationMap) const;
protected:
FontEngine ();
bool setFont (const std::string &fname, int ptSize=0);
private:
int _horDeviceRes, _vertDeviceRes;
mutable unsigned int _currentChar, _currentGlyphIndex;
FT_Face _currentFace;
FT_Library _library;
int _ptSize;
std::string fname;
};
#endif
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