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/*************************************************************************
** GFReader.h **
** **
** This file is part of dvisvgm -- the DVI to SVG converter **
** Copyright (C) 2005-2009 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 GFREADER_H
#define GFREADER_H
#include <istream>
#include <map>
#include <string>
#include <vector>
#include "Bitmap.h"
#include "types.h"
using std::istream;
using std::map;
using std::string;
using std::vector;
class CharInfo;
class GFReader
{
typedef map<UInt8,CharInfo*>::iterator Iterator;
typedef map<UInt8,CharInfo*>::const_iterator ConstIterator;
public:
GFReader (istream &is);
virtual ~GFReader ();
bool executeChar (UInt8 c);
bool executeAllChars ();
bool executePostamble ();
virtual void preamble (const string &str) {}
virtual void postamble () {}
virtual void beginChar (UInt32 c) {}
virtual void endChar (UInt32 c) {}
virtual void special (string str) {}
virtual void numspecial (Int32 y) {}
const Bitmap& getBitmap () const {return bitmap;}
double getDesignSize () const;
double getHPixelsPerPoint () const;
double getVPixelsPerPoint () const;
double getCharWidth (UInt32 c) const;
UInt32 getChecksum () const {return checksum;}
protected:
Int32 readSigned (int bytes);
UInt32 readUnsigned (int bytes);
string readString (int len);
int executeCommand ();
istream& getInputStream () const {return in;}
void cmdPre (int);
void cmdPost (int);
void cmdPostPost (int);
void cmdPaint0 (int pixels);
void cmdPaint (int len);
void cmdBoc (int);
void cmdBoc1 (int);
void cmdEoc (int);
void cmdSkip (int len);
void cmdNewRow (int col);
void cmdXXX (int len);
void cmdYYY (int);
void cmdNop (int);
void cmdCharLoc0 (int);
void cmdCharLoc (int);
private:
istream ∈
Int32 minX, maxX, minY, maxY;
Int32 x, y; // current pen location (pixel units)
Int32 currentChar;
Bitmap bitmap; // bitmap of current char
FixWord designSize; // designSize
ScaledInt hppp, vppp; // horizontal and vertical pixel per point
UInt32 checksum;
map<UInt8,CharInfo*> charInfoMap;
bool penDown;
bool valid;
};
#endif
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