ImageBuffer-less SVG masking and clipping.

Source/core/rendering/svg/RenderSVGResourceMasker.h

 /*
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * 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
@@ skipping 15 matching lines @@
 #include "core/platform/graphics/IntSize.h"
 #include "core/rendering/svg/RenderSVGResourceContainer.h"
 #include "core/svg/SVGMaskElement.h"
 #include "core/svg/SVGUnitTypes.h"
 
 #include "wtf/HashMap.h"
 #include "wtf/OwnPtr.h"
 
 namespace WebCore {
 
-struct MaskerData {
-    OwnPtr<ImageBuffer> maskImage;
-};
-
 class RenderSVGResourceMasker FINAL : public RenderSVGResourceContainer {
 public:
     RenderSVGResourceMasker(SVGMaskElement*);
     virtual ~RenderSVGResourceMasker();
 
     virtual const char* renderName() const { return "RenderSVGResourceMasker"; }
 
     virtual void removeAllClientsFromCache(bool markForInvalidation = true);
     virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true);
-    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);
+    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode) OVERRIDE;
+    virtual void postApplyResource(RenderObject*, GraphicsContext*&, unsigned short, const Path*, const RenderSVGShape*) OVERRIDE;
     virtual FloatRect resourceBoundingBox(RenderObject*);
 
     SVGUnitTypes::SVGUnitType maskUnits() const { return toSVGMaskElement(node())->maskUnitsCurrentValue(); }
     SVGUnitTypes::SVGUnitType maskContentUnits() const { return toSVGMaskElement(node())->maskContentUnitsCurrentValue(); }
 
     virtual RenderSVGResourceType resourceType() const { return s_resourceType; }
     static RenderSVGResourceType s_resourceType;
 
 private:
-    bool drawContentIntoMaskImage(MaskerData*, ColorSpace, const SVGMaskElement*, RenderObject*);
     void calculateMaskContentRepaintRect();
+    void drawMaskContent(GraphicsContext*, const FloatRect& targetBoundingBox);
 
     FloatRect m_maskContentBoundaries;
-    HashMap<RenderObject*, MaskerData*> m_masker;
 };
 
 }
 
 #endif