--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderSVGResourceClipper.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,81 @@
+/*
+ * 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 RenderSVGResourceClipper_h
+#define RenderSVGResourceClipper_h
+
+#if ENABLE(SVG)
+#include "FloatRect.h"
+#include "GraphicsContext.h"
+#include "ImageBuffer.h"
+#include "IntSize.h"
+#include "Path.h"
+#include "RenderSVGResourceContainer.h"
+#include "SVGClipPathElement.h"
+#include "SVGUnitTypes.h"
+
+#include <wtf/HashMap.h>
+#include <wtf/OwnPtr.h>
+
+namespace WebCore {
+
+struct ClipperData {
+ OwnPtr<ImageBuffer> clipMaskImage;
+};
+
+class RenderSVGResourceClipper : public RenderSVGResourceContainer {
+public:
+ RenderSVGResourceClipper(SVGClipPathElement*);
+ virtual ~RenderSVGResourceClipper();
+
+ virtual const char* renderName() const { return "RenderSVGResourceClipper"; }
+
+ virtual void invalidateClients();
+ virtual void invalidateClient(RenderObject*);
+
+ virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode);
+ virtual FloatRect resourceBoundingBox(RenderObject*);
+
+ virtual RenderSVGResourceType resourceType() const { return ClipperResourceType; }
+
+ bool hitTestClipContent(const FloatRect&, const FloatPoint&);
+
+ SVGUnitTypes::SVGUnitType clipPathUnits() const { return toUnitType(static_cast<SVGClipPathElement*>(node())->clipPathUnits()); }
+
+ static RenderSVGResourceType s_resourceType;
+private:
+ // clipPath can be clipped too, but don't have a boundingBox or repaintRect. So we can't call
+ // applyResource directly and use the rects from the object, since they are empty for RenderSVGResources
+ bool applyClippingToContext(RenderObject*, const FloatRect&, const FloatRect&, GraphicsContext*);
+ bool pathOnlyClipping(GraphicsContext*, const FloatRect&);
+ bool createClipData(ClipperData*, const FloatRect&, const FloatRect&);
+ void calculateClipContentRepaintRect();
+
+ virtual bool childElementReferencesResource(const SVGRenderStyle*, const String&) const;
+
+ bool m_invalidationBlocked;
+ FloatRect m_clipBoundaries;
+ HashMap<RenderObject*, ClipperData*> m_clipper;
+};
+
+}
+
+#endif
+#endif