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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef SVGImageBufferTools_h
     21 #define SVGImageBufferTools_h
     22 
     23 #if ENABLE(SVG)
     24 #include "ImageBuffer.h"
     25 #include <wtf/Noncopyable.h>
     26 
     27 namespace WebCore {
     28 
     29 class AffineTransform;
     30 class FloatRect;
     31 class FloatSize;
     32 class GraphicsContext;
     33 class RenderObject;
     34 
     35 class SVGImageBufferTools {
     36     WTF_MAKE_NONCOPYABLE(SVGImageBufferTools);
     37 public:
     38     static bool createImageBuffer(const FloatRect& absoluteTargetRect, const FloatRect& clampedAbsoluteTargetRect, OwnPtr<ImageBuffer>&, ColorSpace);
     39     static void renderSubtreeToImageBuffer(ImageBuffer*, RenderObject*, const AffineTransform&);
     40     static void clipToImageBuffer(GraphicsContext*, const AffineTransform& absoluteTransform, const FloatRect& clampedAbsoluteTargetRect, OwnPtr<ImageBuffer>&);
     41 
     42     static void calculateTransformationToOutermostSVGCoordinateSystem(const RenderObject*, AffineTransform& absoluteTransform);
     43     static FloatRect clampedAbsoluteTargetRectForRenderer(const RenderObject*, const FloatRect& absoluteTargetRect);
     44     static IntSize roundedImageBufferSize(const FloatSize&);
     45 
     46 private:
     47     SVGImageBufferTools() { }
     48     ~SVGImageBufferTools() { }
     49 };
     50 
     51 }
     52 
     53 #endif
     54 #endif
     55