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/*************************************************************************
** PSPattern.h **
** **
** This file is part of dvisvgm -- the DVI to SVG converter **
** Copyright (C) 2005-2015 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 DVISVGM_PSPATTERN_H
#define DVISVGM_PSPATTERN_H
#include <set>
#include <string>
#include "BoundingBox.h"
#include "Color.h"
#include "Matrix.h"
struct SpecialActions;
class SVGTree;
class XMLElementNode;
class PSPattern
{
public:
virtual ~PSPattern () {}
virtual int psID () const {return _id;}
virtual std::string svgID () const;
virtual void apply (SpecialActions *actions);
protected:
PSPattern (int id) : _id(id) {}
virtual XMLElementNode* createPatternNode () const =0;
private:
int _id; ///< PostSCript ID of this pattern
};
class PSTilingPattern : public PSPattern
{
public:
~PSTilingPattern ();
virtual XMLElementNode* getContainerNode () {return _groupNode;}
void apply (SpecialActions *actions);
protected:
PSTilingPattern (int id, BoundingBox &bbox, Matrix &matrix, double xstep, double ystep);
XMLElementNode* createPatternNode () const;
virtual XMLElementNode* createClipNode () const;
virtual XMLElementNode* createGroupNode () const;
virtual XMLElementNode* getGroupNode () const {return _groupNode;}
virtual void setGroupNode (XMLElementNode *node) {_groupNode = node;}
private:
BoundingBox _bbox; ///< bounding box of the tile graphics
Matrix _matrix; ///< tile transformation
double _xstep, _ystep; ///< horizontal and vertical distance between neighboured tiles
XMLElementNode *_groupNode; ///< group containing the drawing elements
};
class PSColoredTilingPattern : public PSTilingPattern
{
public:
PSColoredTilingPattern (int id, BoundingBox &bbox, Matrix &matrix, double xstep, double ystep);
};
class PSUncoloredTilingPattern : public PSTilingPattern
{
public:
PSUncoloredTilingPattern (int id, BoundingBox &bbox, Matrix &matrix, double xstep, double ystep);
~PSUncoloredTilingPattern ();
std::string svgID () const;
void setColor (Color color) {_currentColor = color;}
void apply (SpecialActions *actions);
protected:
XMLElementNode* createClipNode () const;
private:
std::set<Color> _colors; ///< colors this pattern has already been drawn with
Color _currentColor; ///< current color to be applied
bool _applied; ///< has pattern with current group node already been applied to the SVG tree?
};
#endif
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