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SVGTransformDistance.h

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00001 /*
00002  Copyright (C) 2007 Eric Seidel <eric@webkit.org>
00003  
00004  This file is part of the WebKit project
00005  
00006  This library is free software; you can redistribute it and/or
00007  modify it under the terms of the GNU Library General Public
00008  License as published by the Free Software Foundation; either
00009  version 2 of the License, or (at your option) any later version.
00010  
00011  This library is distributed in the hope that it will be useful,
00012  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  Library General Public License for more details.
00015  
00016  You should have received a copy of the GNU Library General Public License
00017  along with this library; see the file COPYING.LIB.  If not, write to
00018  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019  Boston, MA 02110-1301, USA.
00020  */
00021 
00022 #ifndef SVGTransformDistance_h
00023 #define SVGTransformDistance_h
00024 #if ENABLE(SVG)
00025 
00026 #include "SVGTransform.h"
00027 
00028 namespace WebCore {
00029     
00030     class AffineTransform;
00031         
00032     class SVGTransformDistance {
00033     public:
00034         SVGTransformDistance();
00035         SVGTransformDistance(const SVGTransform& fromTransform, const SVGTransform& toTransform);
00036         
00037         SVGTransformDistance scaledDistance(float scaleFactor) const;
00038         SVGTransform addToSVGTransform(const SVGTransform&) const;
00039         void addSVGTransform(const SVGTransform&, bool absoluteValue = false);
00040         
00041         static SVGTransform addSVGTransforms(const SVGTransform&, const SVGTransform&);
00042         
00043         bool isZero() const;
00044         
00045         float distance() const;
00046     private:
00047         SVGTransformDistance(SVGTransform::SVGTransformType, float angle, float cx, float cy, const AffineTransform&);
00048             
00049         SVGTransform::SVGTransformType m_type;
00050         float m_angle;
00051         float m_cx;
00052         float m_cy;
00053         AffineTransform m_transform; // for storing scale, translation or matrix transforms
00054     };
00055 }
00056 
00057 #endif // ENABLE(SVG)
00058 #endif // SVGTransformDistance_h

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