1 /* 2 * Copyright (C) Research In Motion Limited 2009-2010. 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 RenderSVGResourceMasker_h 21 #define RenderSVGResourceMasker_h 22 23 #include "core/platform/graphics/FloatRect.h" 24 #include "core/platform/graphics/GraphicsContext.h" 25 #include "core/platform/graphics/ImageBuffer.h" 26 #include "core/platform/graphics/IntSize.h" 27 #include "core/rendering/svg/RenderSVGResourceContainer.h" 28 #include "core/svg/SVGMaskElement.h" 29 #include "core/svg/SVGUnitTypes.h" 30 31 #include "wtf/HashMap.h" 32 #include "wtf/OwnPtr.h" 33 34 namespace WebCore { 35 36 struct MaskerData { 37 OwnPtr<ImageBuffer> maskImage; 38 }; 39 40 class RenderSVGResourceMasker FINAL : public RenderSVGResourceContainer { 41 public: 42 RenderSVGResourceMasker(SVGMaskElement*); 43 virtual ~RenderSVGResourceMasker(); 44 45 virtual const char* renderName() const { return "RenderSVGResourceMasker"; } 46 47 virtual void removeAllClientsFromCache(bool markForInvalidation = true); 48 virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true); 49 virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short resourceMode); 50 virtual FloatRect resourceBoundingBox(RenderObject*); 51 52 SVGUnitTypes::SVGUnitType maskUnits() const { return toSVGMaskElement(node())->maskUnitsCurrentValue(); } 53 SVGUnitTypes::SVGUnitType maskContentUnits() const { return toSVGMaskElement(node())->maskContentUnitsCurrentValue(); } 54 55 virtual RenderSVGResourceType resourceType() const { return s_resourceType; } 56 static RenderSVGResourceType s_resourceType; 57 58 private: 59 bool drawContentIntoMaskImage(MaskerData*, ColorSpace, const SVGMaskElement*, RenderObject*); 60 void calculateMaskContentRepaintRect(); 61 62 FloatRect m_maskContentBoundaries; 63 HashMap<RenderObject*, MaskerData*> m_masker; 64 }; 65 66 } 67 68 #endif 69
