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 RenderSVGResourceMarker_h 21 #define RenderSVGResourceMarker_h 22 23 #if ENABLE(SVG) 24 #include "FloatRect.h" 25 #include "RenderObject.h" 26 #include "RenderSVGResourceContainer.h" 27 #include "SVGMarkerElement.h" 28 #include "SVGStyledElement.h" 29 30 #include <wtf/HashSet.h> 31 32 namespace WebCore { 33 34 class AffineTransform; 35 36 class RenderSVGResourceMarker : public RenderSVGResourceContainer { 37 public: 38 RenderSVGResourceMarker(SVGMarkerElement*); 39 virtual ~RenderSVGResourceMarker(); 40 41 virtual const char* renderName() const { return "RenderSVGResourceMarker"; } 42 43 virtual void removeAllClientsFromCache(bool markForInvalidation = true); 44 virtual void removeClientFromCache(RenderObject*, bool markForInvalidation = true); 45 46 void draw(PaintInfo&, const AffineTransform&); 47 48 // Calculates marker boundaries, mapped to the target element's coordinate space 49 FloatRect markerBoundaries(const AffineTransform& markerTransformation) const; 50 51 virtual void applyViewportClip(PaintInfo&); 52 virtual void layout(); 53 virtual void calcViewport(); 54 55 virtual const AffineTransform& localToParentTransform() const; 56 AffineTransform markerTransformation(const FloatPoint& origin, float angle, float strokeWidth) const; 57 58 virtual bool applyResource(RenderObject*, RenderStyle*, GraphicsContext*&, unsigned short) { return false; } 59 virtual FloatRect resourceBoundingBox(RenderObject*) { return FloatRect(); } 60 61 FloatPoint referencePoint() const; 62 float angle() const; 63 SVGMarkerElement::SVGMarkerUnitsType markerUnits() const { return static_cast<SVGMarkerElement::SVGMarkerUnitsType>(static_cast<SVGMarkerElement*>(node())->markerUnits()); } 64 65 virtual RenderSVGResourceType resourceType() const { return s_resourceType; } 66 static RenderSVGResourceType s_resourceType; 67 68 private: 69 // Generates a transformation matrix usable to render marker content. Handles scaling the marker content 70 // acording to SVGs markerUnits="strokeWidth" concept, when a strokeWidth value != -1 is passed in. 71 AffineTransform markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth = -1) const; 72 73 AffineTransform viewportTransform() const; 74 75 mutable AffineTransform m_localToParentTransform; 76 FloatRect m_viewport; 77 }; 78 79 } 80 #endif 81 82 #endif 83
