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