1/* 2 * Copyright (C) 2006 Apple Computer, Inc. 3 * Copyright (C) 2009 Google, Inc. 4 * Copyright (C) Research In Motion Limited 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 "RenderSVGForeignObject.h" 26 27#include "GraphicsContext.h" 28#include "HitTestResult.h" 29#include "LayoutRepainter.h" 30#include "RenderObject.h" 31#include "RenderSVGResource.h" 32#include "RenderView.h" 33#include "SVGForeignObjectElement.h" 34#include "SVGRenderingContext.h" 35#include "SVGResourcesCache.h" 36#include "SVGSVGElement.h" 37#include "TransformState.h" 38#include <wtf/StackStats.h> 39 40namespace WebCore { 41 42RenderSVGForeignObject::RenderSVGForeignObject(SVGForeignObjectElement* node) 43 : RenderSVGBlock(node) 44 , m_needsTransformUpdate(true) 45{ 46} 47 48RenderSVGForeignObject::~RenderSVGForeignObject() 49{ 50} 51 52void RenderSVGForeignObject::paint(PaintInfo& paintInfo, const LayoutPoint&) 53{ 54 if (paintInfo.context->paintingDisabled() 55 || (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)) 56 return; 57 58 PaintInfo childPaintInfo(paintInfo); 59 GraphicsContextStateSaver stateSaver(*childPaintInfo.context); 60 childPaintInfo.applyTransform(localTransform()); 61 62 if (SVGRenderSupport::isOverflowHidden(this)) 63 childPaintInfo.context->clip(m_viewport); 64 65 SVGRenderingContext renderingContext; 66 bool continueRendering = true; 67 if (paintInfo.phase == PaintPhaseForeground) { 68 renderingContext.prepareToRenderSVGContent(this, childPaintInfo); 69 continueRendering = renderingContext.isRenderingPrepared(); 70 } 71 72 if (continueRendering) { 73 // Paint all phases of FO elements atomically, as though the FO element established its 74 // own stacking context. 75 bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip; 76 LayoutPoint childPoint = IntPoint(); 77 childPaintInfo.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground; 78 RenderBlock::paint(childPaintInfo, IntPoint()); 79 if (!preservePhase) { 80 childPaintInfo.phase = PaintPhaseChildBlockBackgrounds; 81 RenderBlock::paint(childPaintInfo, childPoint); 82 childPaintInfo.phase = PaintPhaseFloat; 83 RenderBlock::paint(childPaintInfo, childPoint); 84 childPaintInfo.phase = PaintPhaseForeground; 85 RenderBlock::paint(childPaintInfo, childPoint); 86 childPaintInfo.phase = PaintPhaseOutline; 87 RenderBlock::paint(childPaintInfo, childPoint); 88 } 89 } 90} 91 92LayoutRect RenderSVGForeignObject::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const 93{ 94 return SVGRenderSupport::clippedOverflowRectForRepaint(this, repaintContainer); 95} 96 97void RenderSVGForeignObject::computeFloatRectForRepaint(const RenderLayerModelObject* repaintContainer, FloatRect& repaintRect, bool fixed) const 98{ 99 SVGRenderSupport::computeFloatRectForRepaint(this, repaintContainer, repaintRect, fixed); 100} 101 102const AffineTransform& RenderSVGForeignObject::localToParentTransform() const 103{ 104 m_localToParentTransform = localTransform(); 105 m_localToParentTransform.translate(m_viewport.x(), m_viewport.y()); 106 return m_localToParentTransform; 107} 108 109void RenderSVGForeignObject::updateLogicalWidth() 110{ 111 // FIXME: Investigate in size rounding issues 112 // FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656 113 setWidth(static_cast<int>(roundf(m_viewport.width()))); 114} 115 116void RenderSVGForeignObject::computeLogicalHeight(LayoutUnit, LayoutUnit logicalTop, LogicalExtentComputedValues& computedValues) const 117{ 118 // FIXME: Investigate in size rounding issues 119 // FIXME: Remove unnecessary rounding when layout is off ints: webkit.org/b/63656 120 // FIXME: Is this correct for vertical writing mode? 121 computedValues.m_extent = static_cast<int>(roundf(m_viewport.height())); 122 computedValues.m_position = logicalTop; 123} 124 125void RenderSVGForeignObject::layout() 126{ 127 StackStats::LayoutCheckPoint layoutCheckPoint; 128 ASSERT(needsLayout()); 129 ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree. 130 131 LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(this)); 132 SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(node()); 133 134 bool updateCachedBoundariesInParents = false; 135 if (m_needsTransformUpdate) { 136 m_localTransform = foreign->animatedLocalTransform(); 137 m_needsTransformUpdate = false; 138 updateCachedBoundariesInParents = true; 139 } 140 141 FloatRect oldViewport = m_viewport; 142 143 // Cache viewport boundaries 144 SVGLengthContext lengthContext(foreign); 145 FloatPoint viewportLocation(foreign->x().value(lengthContext), foreign->y().value(lengthContext)); 146 m_viewport = FloatRect(viewportLocation, FloatSize(foreign->width().value(lengthContext), foreign->height().value(lengthContext))); 147 if (!updateCachedBoundariesInParents) 148 updateCachedBoundariesInParents = oldViewport != m_viewport; 149 150 // Set box origin to the foreignObject x/y translation, so positioned objects in XHTML content get correct 151 // positions. A regular RenderBoxModelObject would pull this information from RenderStyle - in SVG those 152 // properties are ignored for non <svg> elements, so we mimic what happens when specifying them through CSS. 153 154 // FIXME: Investigate in location rounding issues - only affects RenderSVGForeignObject & RenderSVGText 155 setLocation(roundedIntPoint(viewportLocation)); 156 157 bool layoutChanged = everHadLayout() && selfNeedsLayout(); 158 RenderBlock::layout(); 159 ASSERT(!needsLayout()); 160 161 // If our bounds changed, notify the parents. 162 if (updateCachedBoundariesInParents) 163 RenderSVGBlock::setNeedsBoundariesUpdate(); 164 165 // Invalidate all resources of this client if our layout changed. 166 if (layoutChanged) 167 SVGResourcesCache::clientLayoutChanged(this); 168 169 repainter.repaintAfterLayout(); 170} 171 172bool RenderSVGForeignObject::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction) 173{ 174 // Embedded content is drawn in the foreground phase. 175 if (hitTestAction != HitTestForeground) 176 return false; 177 178 FloatPoint localPoint = localTransform().inverse().mapPoint(pointInParent); 179 180 // Early exit if local point is not contained in clipped viewport area 181 if (SVGRenderSupport::isOverflowHidden(this) && !m_viewport.contains(localPoint)) 182 return false; 183 184 // FOs establish a stacking context, so we need to hit-test all layers. 185 HitTestLocation hitTestLocation(roundedLayoutPoint(localPoint)); 186 return RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestForeground) 187 || RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestFloat) 188 || RenderBlock::nodeAtPoint(request, result, hitTestLocation, LayoutPoint(), HitTestChildBlockBackgrounds); 189} 190 191bool RenderSVGForeignObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) 192{ 193 ASSERT_NOT_REACHED(); 194 return false; 195} 196 197void RenderSVGForeignObject::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed) const 198{ 199 SVGRenderSupport::mapLocalToContainer(this, repaintContainer, transformState, wasFixed); 200} 201 202const RenderObject* RenderSVGForeignObject::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const 203{ 204 return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap); 205} 206 207} 208 209#endif 210