Introduce SVGPaintServer

Source/core/rendering/svg/RenderSVGResource.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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef RenderSVGResource_h
 #define RenderSVGResource_h
 
+#include "wtf/Forward.h"
+
 namespace blink {
 
 enum RenderSVGResourceType {
     MaskerResourceType,
     MarkerResourceType,
     PatternResourceType,
     LinearGradientResourceType,
     RadialGradientResourceType,
     SolidColorResourceType,
     FilterResourceType,
     ClipperResourceType
 };
 
 // If this enum changes change the unsigned bitfields using it.
 enum RenderSVGResourceMode {
     ApplyToFillMode    = 1 << 0,
     ApplyToStrokeMode  = 1 << 1,
     ApplyToTextMode    = 1 << 2 // used in combination with ApplyTo{Fill|Stroke}Mode
 };
 typedef unsigned RenderSVGResourceModeFlags;
 
-class GraphicsContext;
 class RenderObject;
 class RenderStyle;
 class RenderSVGResourceSolidColor;
+class SVGPaintServer;
 
 class RenderSVGResource {
 public:
     RenderSVGResource() { }
     virtual ~RenderSVGResource() { }
 
-    virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*, RenderSVGResourceModeFlags);
-    virtual void postApplyResource(GraphicsContext*) { }
+    virtual PassOwnPtr<SVGPaintServer> preparePaintServer(RenderObject*, RenderStyle*, RenderSVGResourceModeFlags);
 
     virtual RenderSVGResourceType resourceType() const = 0;
 
     // Helper utilities used in the render tree to access resources used for painting shapes/text (gradients & patterns & solid colors only)
     // If hasFallback gets set to true, the sharedSolidPaintingResource is set to a fallback color.
     static RenderSVGResource* requestPaintingResource(RenderSVGResourceMode, RenderObject*, const RenderStyle*, bool& hasFallback);
     static RenderSVGResourceSolidColor* sharedSolidPaintingResource();
 
     static void markForLayoutAndParentResourceInvalidation(RenderObject*, bool needsLayout = true);
-
-protected:
-    // Transfer fill/stroke style (except paint server) to the GC.
-    static void updateGraphicsContext(GraphicsContext*, const RenderStyle*, const RenderObject&, unsigned resourceModeFlags);
 };
 
 #define DEFINE_RENDER_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \
     DEFINE_TYPE_CASTS(thisType, RenderSVGResource, resource, resource->resourceType() == typeName, resource.resourceType() == typeName)
 
 }
 
 #endif