khtml/svg/SVGTransform.h

   1 /*
   2     Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
   3                   2004, 2005 Rob Buis <buis@kde.org>
   4
   5     This file is part of the KDE project
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU Library General Public
   9     License as published by the Free Software Foundation; either
  10     version 2 of the License, or (at your option) any later version.
  11
  12     This library is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     Library General Public License for more details.
  16
  17     You should have received a copy of the GNU Library General Public License
  18     along with this library; see the file COPYING.LIB.  If not, write to
  19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20     Boston, MA 02110-1301, USA.
  21 */
  22
  23 #ifndef SVGTransform_h
  24 #define SVGTransform_h
  25 #if ENABLE(SVG)
  26
  27 #include "AffineTransform.h"
  28 #include "FloatPoint.h"
  29 #include <wtf/RefCounted.h>
  30 #include <wtf/RefPtr.h>
  31
  32 namespace WebCore {
  33
  34     class FloatSize;
  35
  36     class SVGTransform {
  37     public:
  38         enum SVGTransformType {
  39             SVG_TRANSFORM_UNKNOWN           = 0,
  40             SVG_TRANSFORM_MATRIX            = 1,
  41             SVG_TRANSFORM_TRANSLATE         = 2,
  42             SVG_TRANSFORM_SCALE             = 3,
  43             SVG_TRANSFORM_ROTATE            = 4,
  44             SVG_TRANSFORM_SKEWX             = 5,
  45             SVG_TRANSFORM_SKEWY             = 6
  46         };
  47
  48         SVGTransform();
  49         SVGTransform(SVGTransformType);
  50         explicit SVGTransform(const AffineTransform&);
  51         virtual ~SVGTransform();
  52
  53         SVGTransformType type() const;
  54
  55         AffineTransform matrix() const;
  56
  57         float angle() const;
  58         FloatPoint rotationCenter() const;
  59
  60         void setMatrix(const AffineTransform&);
  61         void setTranslate(float tx, float ty);
  62         void setScale(float sx, float sy);
  63         void setRotate(float angle, float cx, float cy);
  64         void setSkewX(float angle);
  65         void setSkewY(float angle);
  66
  67         // Internal use only (animation system)
  68         FloatPoint translate() const;
  69         FloatSize scale() const;
  70
  71         bool isValid();
  72
  73     private:
  74         SVGTransformType m_type;
  75         float m_angle;
  76         FloatPoint m_center;
  77         AffineTransform m_matrix;
  78     };
  79
  80     inline bool operator==(const SVGTransform& a, const SVGTransform& b)
  81     {
  82         return a.type() == b.type() && a.angle() == b.angle() && a.matrix() == b.matrix();
  83     }
  84
  85     inline bool operator!=(const SVGTransform& a, const SVGTransform& b)
  86     {
  87         return !(a == b);
  88     }
  89
  90 } // namespace WebCore
  91
  92 #endif // ENABLE(SVG)
  93 #endif
  94
  95 // vim:ts=4:noet