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/* This file is part of the KDE project
Copyright (C) 2002, 2003 The Karbon Developers
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef __SVGPATHPARSER_H__
#define __SVGPATHPARSER_H__
class QString;
namespace KSVG
{
const char *getNumber( const char *, double & );
}
/**
* Parser for svg path data, contained in the d attribute.
*
* The parser delivers encountered commands and parameters by calling
* methods that correspond to those commands. Clients have to derive
* from this class and implement the abstract command methods.
*
* There are two operating modes. By default the parser just delivers unaltered
* svg path data commands and parameters. In the second mode, it will convert all
* relative coordinates to absolute ones, and convert all curves to cubic beziers.
*/
class SVGPathParser
{
public:
void parseSVG( const QString &d, bool process = false );
static const char *getCoord( const char *, double & );
protected:
virtual void svgMoveTo( double x1, double y1, bool closed, bool abs = true ) = 0;
virtual void svgLineTo( double x1, double y1, bool abs = true ) = 0;
virtual void svgLineToHorizontal( double x, bool abs = true );
virtual void svgLineToVertical( double y, bool abs = true );
virtual void svgCurveToCubic( double x1, double y1, double x2, double y2, double x, double y, bool abs = true ) = 0;
virtual void svgCurveToCubicSmooth( double x, double y, double x2, double y2, bool abs = true );
virtual void svgCurveToQuadratic( double x, double y, double x1, double y1, bool abs = true );
virtual void svgCurveToQuadraticSmooth( double x, double y, bool abs = true );
virtual void svgArcTo( double x, double y, double r1, double r2, double angle, bool largeArcFlag, bool sweepFlag, bool abs = true );
virtual void svgClosePath() = 0;
private:
void calculateArc( bool relative, double &curx, double &cury, double angle, double x, double y, double r1, double r2, bool largeArcFlag, bool sweepFlag );
};
#endif
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