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SVGTransform.h

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00001 /*
00002     Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
00003                   2004, 2005 Rob Buis <buis@kde.org>
00004 
00005     This file is part of the KDE project
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public License
00018     along with this library; see the file COPYING.LIB.  If not, write to
00019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020     Boston, MA 02110-1301, USA.
00021 */
00022 
00023 #ifndef SVGTransform_h
00024 #define SVGTransform_h
00025 #if ENABLE(SVG)
00026 
00027 #include "AffineTransform.h"
00028 #include "FloatPoint.h"
00029 #include <wtf/RefCounted.h>
00030 #include <wtf/RefPtr.h>
00031 
00032 namespace WebCore {
00033     
00034     class FloatSize;
00035 
00036     class SVGTransform {
00037     public:
00038         enum SVGTransformType {
00039             SVG_TRANSFORM_UNKNOWN           = 0,
00040             SVG_TRANSFORM_MATRIX            = 1,
00041             SVG_TRANSFORM_TRANSLATE         = 2,
00042             SVG_TRANSFORM_SCALE             = 3,
00043             SVG_TRANSFORM_ROTATE            = 4,
00044             SVG_TRANSFORM_SKEWX             = 5,
00045             SVG_TRANSFORM_SKEWY             = 6
00046         };
00047  
00048         SVGTransform();
00049         SVGTransform(SVGTransformType);
00050         explicit SVGTransform(const AffineTransform&);
00051         virtual ~SVGTransform();
00052                
00053         SVGTransformType type() const;
00054 
00055         AffineTransform matrix() const;
00056     
00057         float angle() const;
00058         FloatPoint rotationCenter() const;
00059 
00060         void setMatrix(const AffineTransform&);
00061         void setTranslate(float tx, float ty);
00062         void setScale(float sx, float sy);
00063         void setRotate(float angle, float cx, float cy);
00064         void setSkewX(float angle);
00065         void setSkewY(float angle);
00066         
00067         // Internal use only (animation system)
00068         FloatPoint translate() const;
00069         FloatSize scale() const;
00070         
00071         bool isValid();
00072 
00073     private:
00074         SVGTransformType m_type;
00075         float m_angle;
00076         FloatPoint m_center;
00077         AffineTransform m_matrix;
00078     };
00079 
00080     inline bool operator==(const SVGTransform& a, const SVGTransform& b)
00081     {
00082         return a.type() == b.type() && a.angle() == b.angle() && a.matrix() == b.matrix();
00083     }
00084     
00085     inline bool operator!=(const SVGTransform& a, const SVGTransform& b)
00086     {
00087         return !(a == b);
00088     }
00089     
00090 } // namespace WebCore
00091 
00092 #endif // ENABLE(SVG)
00093 #endif
00094 
00095 // vim:ts=4:noet

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