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