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SVGResourceFilter.h

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00001 /*
00002     Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
00003                   2004, 2005 Rob Buis <buis@kde.org>
00004                   2005 Eric Seidel <eric@webkit.org>
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public License
00017     aint with this library; see the file COPYING.LIB.  If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #ifndef SVGResourceFilter_h
00023 #define SVGResourceFilter_h
00024 
00025 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
00026 #include "SVGResource.h"
00027 #include "SVGFilterEffect.h"
00028 
00029 #include "FloatRect.h"
00030 
00031 #include <wtf/OwnPtr.h>
00032 
00033 namespace WebCore {
00034 
00035 class GraphicsContext;
00036 class SVGFilterEffect;
00037     
00038 class SVGResourceFilterPlatformData {
00039 public:
00040     virtual ~SVGResourceFilterPlatformData() {}
00041 };
00042 
00043 class SVGResourceFilter : public SVGResource {
00044 public:
00045     SVGResourceFilter();
00046     
00047     virtual SVGResourceType resourceType() const { return FilterResourceType; }
00048 
00049     bool filterBoundingBoxMode() const { return m_filterBBoxMode; }
00050     void setFilterBoundingBoxMode(bool bboxMode) { m_filterBBoxMode = bboxMode; }
00051 
00052     bool effectBoundingBoxMode() const { return m_effectBBoxMode; }
00053     void setEffectBoundingBoxMode(bool bboxMode) { m_effectBBoxMode = bboxMode; }
00054 
00055     bool xBoundingBoxMode() const { return m_xBBoxMode; }
00056     void setXBoundingBoxMode(bool bboxMode) { m_xBBoxMode = bboxMode; }
00057 
00058     bool yBoundingBoxMode() const { return m_yBBoxMode; }
00059     void setYBoundingBoxMode(bool bboxMode) { m_yBBoxMode = bboxMode; }
00060 
00061     FloatRect filterRect() const { return m_filterRect; }
00062     void setFilterRect(const FloatRect& rect) { m_filterRect = rect; }
00063 
00064     FloatRect filterBBoxForItemBBox(const FloatRect& itemBBox) const;
00065 
00066     void clearEffects();
00067     void addFilterEffect(SVGFilterEffect*);
00068 
00069     virtual TextStream& externalRepresentation(TextStream&) const;
00070 
00071     // To be implemented in platform specific code.
00072     void prepareFilter(GraphicsContext*&, const FloatRect& bbox);
00073     void applyFilter(GraphicsContext*&, const FloatRect& bbox);
00074     
00075     SVGResourceFilterPlatformData* platformData() { return m_platformData.get(); }
00076     const Vector<SVGFilterEffect*>& effects() { return m_effects; }
00077     
00078 private:
00079     SVGResourceFilterPlatformData* createPlatformData();
00080     
00081     OwnPtr<SVGResourceFilterPlatformData> m_platformData;
00082 
00083     bool m_filterBBoxMode : 1;
00084     bool m_effectBBoxMode : 1;
00085 
00086     bool m_xBBoxMode : 1;
00087     bool m_yBBoxMode : 1;
00088 
00089     FloatRect m_filterRect;
00090     Vector<SVGFilterEffect*> m_effects;
00091 };
00092 
00093 SVGResourceFilter* getFilterById(Document*, const AtomicString&);
00094 
00095 } // namespace WebCore
00096 
00097 #endif // ENABLE(SVG)
00098 
00099 #endif // SVGResourceFilter_h

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