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) && ENABLE(SVG_FOREIGN_OBJECT) 25 #include "RenderSVGForeignObject.h" 26 27 #include "GraphicsContext.h" 28 #include "RenderSVGResource.h" 29 #include "RenderView.h" 30 #include "SVGForeignObjectElement.h" 31 #include "SVGRenderSupport.h" 32 #include "SVGSVGElement.h" 33 #include "TransformState.h" 34 35 namespace WebCore { 36 37 RenderSVGForeignObject::RenderSVGForeignObject(SVGForeignObjectElement* node) 38 : RenderSVGBlock(node) 39 , m_needsTransformUpdate(true) 40 { 41 } 42 43 RenderSVGForeignObject::~RenderSVGForeignObject() 44 { 45 } 46 47 void RenderSVGForeignObject::paint(PaintInfo& paintInfo, int, int) 48 { 49 if (paintInfo.context->paintingDisabled()) 50 return; 51 52 PaintInfo childPaintInfo(paintInfo); 53 childPaintInfo.context->save(); 54 childPaintInfo.applyTransform(localTransform()); 55 56 if (SVGRenderSupport::isOverflowHidden(this)) 57 childPaintInfo.context->clip(m_viewport); 58 59 float opacity = style()->opacity(); 60 if (opacity < 1.0f) 61 childPaintInfo.context->beginTransparencyLayer(opacity); 62 63 RenderBlock::paint(childPaintInfo, 0, 0); 64 65 if (opacity < 1.0f) 66 childPaintInfo.context->endTransparencyLayer(); 67 68 childPaintInfo.context->restore(); 69 } 70 71 IntRect RenderSVGForeignObject::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer) 72 { 73 return SVGRenderSupport::clippedOverflowRectForRepaint(this, repaintContainer); 74 } 75 76 void RenderSVGForeignObject::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& repaintRect, bool fixed) 77 { 78 SVGRenderSupport::computeRectForRepaint(this, repaintContainer, repaintRect, fixed); 79 } 80 81 const AffineTransform& RenderSVGForeignObject::localToParentTransform() const 82 { 83 m_localToParentTransform = localTransform(); 84 m_localToParentTransform.translate(m_viewport.x(), m_viewport.y()); 85 return m_localToParentTransform; 86 } 87 88 void RenderSVGForeignObject::computeLogicalWidth() 89 { 90 // FIXME: Investigate in size rounding issues 91 setWidth(static_cast<int>(roundf(m_viewport.width()))); 92 } 93 94 void RenderSVGForeignObject::computeLogicalHeight() 95 { 96 // FIXME: Investigate in size rounding issues 97 setHeight(static_cast<int>(roundf(m_viewport.height()))); 98 } 99 100 void RenderSVGForeignObject::layout() 101 { 102 ASSERT(needsLayout()); 103 ASSERT(!view()->layoutStateEnabled()); // RenderSVGRoot disables layoutState for the SVG rendering tree. 104 105 LayoutRepainter repainter(*this, checkForRepaintDuringLayout()); 106 SVGForeignObjectElement* foreign = static_cast<SVGForeignObjectElement*>(node()); 107 108 bool updateCachedBoundariesInParents = false; 109 if (m_needsTransformUpdate) { 110 m_localTransform = foreign->animatedLocalTransform(); 111 m_needsTransformUpdate = false; 112 updateCachedBoundariesInParents = true; 113 } 114 115 FloatRect oldViewport = m_viewport; 116 117 // Cache viewport boundaries 118 FloatPoint viewportLocation(foreign->x().value(foreign), foreign->y().value(foreign)); 119 m_viewport = FloatRect(viewportLocation, FloatSize(foreign->width().value(foreign), foreign->height().value(foreign))); 120 if (!updateCachedBoundariesInParents) 121 updateCachedBoundariesInParents = oldViewport != m_viewport; 122 123 // Set box origin to the foreignObject x/y translation, so positioned objects in XHTML content get correct 124 // positions. A regular RenderBoxModelObject would pull this information from RenderStyle - in SVG those 125 // properties are ignored for non <svg> elements, so we mimic what happens when specifying them through CSS. 126 127 // FIXME: Investigate in location rounding issues - only affects RenderSVGForeignObject & RenderSVGText 128 setLocation(roundedIntPoint(viewportLocation)); 129 130 bool layoutChanged = m_everHadLayout && selfNeedsLayout(); 131 RenderBlock::layout(); 132 ASSERT(!needsLayout()); 133 134 // If our bounds changed, notify the parents. 135 if (updateCachedBoundariesInParents) 136 RenderSVGBlock::setNeedsBoundariesUpdate(); 137 138 // Invalidate all resources of this client if our layout changed. 139 if (layoutChanged) 140 SVGResourcesCache::clientLayoutChanged(this); 141 142 repainter.repaintAfterLayout(); 143 } 144 145 bool RenderSVGForeignObject::nodeAtFloatPoint(const HitTestRequest& request, HitTestResult& result, const FloatPoint& pointInParent, HitTestAction hitTestAction) 146 { 147 FloatPoint localPoint = localTransform().inverse().mapPoint(pointInParent); 148 149 // Early exit if local point is not contained in clipped viewport area 150 if (SVGRenderSupport::isOverflowHidden(this) && !m_viewport.contains(localPoint)) 151 return false; 152 153 IntPoint roundedLocalPoint = roundedIntPoint(localPoint); 154 return RenderBlock::nodeAtPoint(request, result, roundedLocalPoint.x(), roundedLocalPoint.y(), 0, 0, hitTestAction); 155 } 156 157 bool RenderSVGForeignObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int, HitTestAction) 158 { 159 ASSERT_NOT_REACHED(); 160 return false; 161 } 162 163 void RenderSVGForeignObject::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState) const 164 { 165 // When crawling up the hierachy starting from foreignObject child content, useTransforms may not be set to true. 166 if (!useTransforms) 167 useTransforms = true; 168 SVGRenderSupport::mapLocalToContainer(this, repaintContainer, fixed, useTransforms, transformState); 169 } 170 171 } 172 173 #endif 174
