1/* 2 * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> 3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org> 4 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22#include "config.h" 23 24#if ENABLE(SVG) 25#include "RenderSVGResourceMarker.h" 26 27#include "GraphicsContext.h" 28#include "RenderSVGContainer.h" 29#include "RenderSVGRoot.h" 30#include "SVGElement.h" 31#include "SVGMarkerElement.h" 32#include "SVGRenderSupport.h" 33#include "SVGStyledElement.h" 34#include "SVGStyledTransformableElement.h" 35#include <wtf/StackStats.h> 36 37namespace WebCore { 38 39RenderSVGResourceType RenderSVGResourceMarker::s_resourceType = MarkerResourceType; 40 41RenderSVGResourceMarker::RenderSVGResourceMarker(SVGMarkerElement* node) 42 : RenderSVGResourceContainer(node) 43{ 44} 45 46RenderSVGResourceMarker::~RenderSVGResourceMarker() 47{ 48} 49 50void RenderSVGResourceMarker::layout() 51{ 52 StackStats::LayoutCheckPoint layoutCheckPoint; 53 // Invalidate all resources if our layout changed. 54 if (everHadLayout() && selfNeedsLayout()) 55 RenderSVGRoot::addResourceForClientInvalidation(this); 56 57 // RenderSVGHiddenContainer overwrites layout(). We need the 58 // layouting of RenderSVGContainer for calculating local 59 // transformations and repaint. 60 RenderSVGContainer::layout(); 61} 62 63void RenderSVGResourceMarker::removeAllClientsFromCache(bool markForInvalidation) 64{ 65 markAllClientsForInvalidation(markForInvalidation ? LayoutAndBoundariesInvalidation : ParentOnlyInvalidation); 66} 67 68void RenderSVGResourceMarker::removeClientFromCache(RenderObject* client, bool markForInvalidation) 69{ 70 ASSERT(client); 71 markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidation : ParentOnlyInvalidation); 72} 73 74void RenderSVGResourceMarker::applyViewportClip(PaintInfo& paintInfo) 75{ 76 if (SVGRenderSupport::isOverflowHidden(this)) 77 paintInfo.context->clip(m_viewport); 78} 79 80FloatRect RenderSVGResourceMarker::markerBoundaries(const AffineTransform& markerTransformation) const 81{ 82 FloatRect coordinates = RenderSVGContainer::repaintRectInLocalCoordinates(); 83 84 // Map repaint rect into parent coordinate space, in which the marker boundaries have to be evaluated 85 coordinates = localToParentTransform().mapRect(coordinates); 86 87 return markerTransformation.mapRect(coordinates); 88} 89 90const AffineTransform& RenderSVGResourceMarker::localToParentTransform() const 91{ 92 m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_viewport.y()) * viewportTransform(); 93 return m_localToParentTransform; 94 // If this class were ever given a localTransform(), then the above would read: 95 // return viewportTranslation * localTransform() * viewportTransform(); 96} 97 98FloatPoint RenderSVGResourceMarker::referencePoint() const 99{ 100 SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(node()); 101 ASSERT(marker); 102 103 SVGLengthContext lengthContext(marker); 104 return FloatPoint(marker->refX().value(lengthContext), marker->refY().value(lengthContext)); 105} 106 107float RenderSVGResourceMarker::angle() const 108{ 109 SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(node()); 110 ASSERT(marker); 111 112 float angle = -1; 113 if (marker->orientType() == SVGMarkerOrientAngle) 114 angle = marker->orientAngle().value(); 115 116 return angle; 117} 118 119AffineTransform RenderSVGResourceMarker::markerTransformation(const FloatPoint& origin, float autoAngle, float strokeWidth) const 120{ 121 SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(node()); 122 ASSERT(marker); 123 124 float markerAngle = angle(); 125 bool useStrokeWidth = marker->markerUnits() == SVGMarkerUnitsStrokeWidth; 126 127 AffineTransform transform; 128 transform.translate(origin.x(), origin.y()); 129 transform.rotate(markerAngle == -1 ? autoAngle : markerAngle); 130 transform = markerContentTransformation(transform, referencePoint(), useStrokeWidth ? strokeWidth : -1); 131 return transform; 132} 133 134void RenderSVGResourceMarker::draw(PaintInfo& paintInfo, const AffineTransform& transform) 135{ 136 // An empty viewBox disables rendering. 137 SVGMarkerElement* marker = toSVGMarkerElement(toSVGElement(node())); 138 ASSERT(marker); 139 if (marker->hasAttribute(SVGNames::viewBoxAttr) && marker->viewBoxIsValid() && marker->viewBox().isEmpty()) 140 return; 141 142 PaintInfo info(paintInfo); 143 GraphicsContextStateSaver stateSaver(*info.context); 144 info.applyTransform(transform); 145 RenderSVGContainer::paint(info, IntPoint()); 146} 147 148AffineTransform RenderSVGResourceMarker::markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth) const 149{ 150 // The 'origin' coordinate maps to SVGs refX/refY, given in coordinates relative to the viewport established by the marker 151 FloatPoint mappedOrigin = viewportTransform().mapPoint(origin); 152 153 AffineTransform transformation = contentTransformation; 154 if (strokeWidth != -1) 155 transformation.scaleNonUniform(strokeWidth, strokeWidth); 156 157 transformation.translate(-mappedOrigin.x(), -mappedOrigin.y()); 158 return transformation; 159} 160 161AffineTransform RenderSVGResourceMarker::viewportTransform() const 162{ 163 SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(node()); 164 ASSERT(marker); 165 166 return marker->viewBoxToViewTransform(m_viewport.width(), m_viewport.height()); 167} 168 169void RenderSVGResourceMarker::calcViewport() 170{ 171 if (!selfNeedsLayout()) 172 return; 173 174 SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(node()); 175 ASSERT(marker); 176 177 SVGLengthContext lengthContext(marker); 178 float w = marker->markerWidth().value(lengthContext); 179 float h = marker->markerHeight().value(lengthContext); 180 m_viewport = FloatRect(0, 0, w, h); 181} 182 183} 184 185#endif // ENABLE(SVG) 186