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