1/* 2 * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org> 3 * Copyright (C) 2006 Apple Computer, Inc. 4 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org> 5 * Copyright (C) 2007, 2008, 2009 Rob Buis <buis@kde.org> 6 * Copyright (C) 2009 Google, Inc. 7 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> 8 * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com> 9 * 10 * This library is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Library General Public 12 * License as published by the Free Software Foundation; either 13 * version 2 of the License, or (at your option) any later version. 14 * 15 * This library is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Library General Public License for more details. 19 * 20 * You should have received a copy of the GNU Library General Public License 21 * along with this library; see the file COPYING.LIB. If not, write to 22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 23 * Boston, MA 02110-1301, USA. 24 */ 25 26#include "config.h" 27 28#if ENABLE(SVG) 29#include "RenderSVGImage.h" 30 31#include "Attr.h" 32#include "FloatConversion.h" 33#include "FloatQuad.h" 34#include "GraphicsContext.h" 35#include "LayoutRepainter.h" 36#include "PointerEventsHitRules.h" 37#include "RenderImageResource.h" 38#include "RenderLayer.h" 39#include "RenderSVGResourceContainer.h" 40#include "RenderSVGResourceFilter.h" 41#include "SVGImageElement.h" 42#include "SVGLength.h" 43#include "SVGPreserveAspectRatio.h" 44#include "SVGRenderingContext.h" 45#include "SVGResources.h" 46#include "SVGResourcesCache.h" 47#include <wtf/StackStats.h> 48 49namespace WebCore { 50 51RenderSVGImage::RenderSVGImage(SVGImageElement* impl) 52 : RenderSVGModelObject(impl) 53 , m_needsBoundariesUpdate(true) 54 , m_needsTransformUpdate(true) 55 , m_imageResource(RenderImageResource::create()) 56{ 57 m_imageResource->initialize(this); 58} 59 60RenderSVGImage::~RenderSVGImage() 61{ 62 m_imageResource->shutdown(); 63} 64 65bool RenderSVGImage::updateImageViewport() 66{ 67 SVGImageElement* image = static_cast<SVGImageElement*>(node()); 68 FloatRect oldBoundaries = m_objectBoundingBox; 69 70 SVGLengthContext lengthContext(image); 71 m_objectBoundingBox = FloatRect(image->x().value(lengthContext), image->y().value(lengthContext), image->width().value(lengthContext), image->height().value(lengthContext)); 72 73 if (oldBoundaries == m_objectBoundingBox) 74 return false; 75 76 m_imageResource->setContainerSizeForRenderer(enclosingIntRect(m_objectBoundingBox).size()); 77 m_needsBoundariesUpdate = true; 78 return true; 79} 80 81void RenderSVGImage::layout() 82{ 83 StackStats::LayoutCheckPoint layoutCheckPoint; 84 ASSERT(needsLayout()); 85 86 LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(this) && selfNeedsLayout()); 87 updateImageViewport(); 88 89 bool transformOrBoundariesUpdate = m_needsTransformUpdate || m_needsBoundariesUpdate; 90 if (m_needsTransformUpdate) { 91 m_localTransform = static_cast<SVGImageElement*>(node())->animatedLocalTransform(); 92 m_needsTransformUpdate = false; 93 } 94 95 if (m_needsBoundariesUpdate) { 96 m_repaintBoundingBoxExcludingShadow = m_objectBoundingBox; 97 SVGRenderSupport::intersectRepaintRectWithResources(this, m_repaintBoundingBoxExcludingShadow); 98 99 m_repaintBoundingBox = m_repaintBoundingBoxExcludingShadow; 100 SVGRenderSupport::intersectRepaintRectWithShadows(this, m_repaintBoundingBox); 101 102 m_needsBoundariesUpdate = false; 103 } 104 105 // Invalidate all resources of this client if our layout changed. 106 if (everHadLayout() && selfNeedsLayout()) 107 SVGResourcesCache::clientLayoutChanged(this); 108 109 // If our bounds changed, notify the parents. 110 if (transformOrBoundariesUpdate) 111 RenderSVGModelObject::setNeedsBoundariesUpdate(); 112 113 repainter.repaintAfterLayout(); 114 setNeedsLayout(false); 115} 116 117void RenderSVGImage::paint(PaintInfo& paintInfo, const LayoutPoint&) 118{ 119 if (paintInfo.context->paintingDisabled() || style()->visibility() == HIDDEN || !m_imageResource->hasImage()) 120 return; 121 122 FloatRect boundingBox = repaintRectInLocalCoordinates(); 123 if (!SVGRenderSupport::paintInfoIntersectsRepaintRect(boundingBox, m_localTransform, paintInfo)) 124 return; 125 126 PaintInfo childPaintInfo(paintInfo); 127 bool drawsOutline = style()->outlineWidth() && (childPaintInfo.phase == PaintPhaseOutline || childPaintInfo.phase == PaintPhaseSelfOutline); 128 if (drawsOutline || childPaintInfo.phase == PaintPhaseForeground) { 129 GraphicsContextStateSaver stateSaver(*childPaintInfo.context); 130 childPaintInfo.applyTransform(m_localTransform); 131 132 if (childPaintInfo.phase == PaintPhaseForeground) { 133 SVGRenderingContext renderingContext(this, childPaintInfo); 134 135 if (renderingContext.isRenderingPrepared()) { 136 if (style()->svgStyle()->bufferedRendering() == BR_STATIC && renderingContext.bufferForeground(m_bufferedForeground)) 137 return; 138 139 paintForeground(childPaintInfo); 140 } 141 } 142 143 if (drawsOutline) 144 paintOutline(childPaintInfo.context, IntRect(boundingBox)); 145 } 146} 147 148void RenderSVGImage::paintForeground(PaintInfo& paintInfo) 149{ 150 RefPtr<Image> image = m_imageResource->image(); 151 FloatRect destRect = m_objectBoundingBox; 152 FloatRect srcRect(0, 0, image->width(), image->height()); 153 154 SVGImageElement* imageElement = static_cast<SVGImageElement*>(node()); 155 imageElement->preserveAspectRatio().transformRect(destRect, srcRect); 156 157 paintInfo.context->drawImage(image.get(), ColorSpaceDeviceRGB, destRect, srcRect); 158} 159 160void RenderSVGImage::invalidateBufferedForeground() 161{ 162 m_bufferedForeground.clear(); 163} 164 165bool RenderSVGImage::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction) 166{ 167 // We only draw in the forground phase, so we only hit-test then. 168 if (hitTestAction != HitTestForeground) 169 return false; 170 171 PointerEventsHitRules hitRules(PointerEventsHitRules::SVG_IMAGE_HITTESTING, request, style()->pointerEvents()); 172 bool isVisible = (style()->visibility() == VISIBLE); 173 if (isVisible || !hitRules.requireVisible) { 174 FloatPoint localPoint = localToParentTransform().inverse().mapPoint(pointInParent); 175 176 if (!SVGRenderSupport::pointInClippingArea(this, localPoint)) 177 return false; 178 179 if (hitRules.canHitFill) { 180 if (m_objectBoundingBox.contains(localPoint)) { 181 updateHitTestResult(result, roundedLayoutPoint(localPoint)); 182 return true; 183 } 184 } 185 } 186 187 return false; 188} 189 190void RenderSVGImage::imageChanged(WrappedImagePtr, const IntRect*) 191{ 192 // The image resource defaults to nullImage until the resource arrives. 193 // This empty image may be cached by SVG resources which must be invalidated. 194 if (SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(this)) 195 resources->removeClientFromCache(this); 196 197 // Eventually notify parent resources, that we've changed. 198 RenderSVGResource::markForLayoutAndParentResourceInvalidation(this, false); 199 200 // Update the SVGImageCache sizeAndScales entry in case image loading finished after layout. 201 // (https://bugs.webkit.org/show_bug.cgi?id=99489) 202 m_objectBoundingBox = FloatRect(); 203 updateImageViewport(); 204 205 invalidateBufferedForeground(); 206 207 repaint(); 208} 209 210void RenderSVGImage::addFocusRingRects(Vector<IntRect>& rects, const LayoutPoint&) 211{ 212 // this is called from paint() after the localTransform has already been applied 213 IntRect contentRect = enclosingIntRect(repaintRectInLocalCoordinates()); 214 if (!contentRect.isEmpty()) 215 rects.append(contentRect); 216} 217 218} // namespace WebCore 219 220#endif // ENABLE(SVG) 221