1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. 3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) kde.org> 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 #include "core/rendering/svg/RenderSVGBlock.h" 25 26 #include "core/rendering/RenderView.h" 27 #include "core/rendering/style/ShadowList.h" 28 #include "core/rendering/svg/SVGRenderSupport.h" 29 #include "core/rendering/svg/SVGResourcesCache.h" 30 #include "core/svg/SVGElement.h" 31 32 namespace blink { 33 34 RenderSVGBlock::RenderSVGBlock(SVGElement* element) 35 : RenderBlockFlow(element) 36 { 37 } 38 39 LayoutRect RenderSVGBlock::visualOverflowRect() const 40 { 41 LayoutRect borderRect = borderBoxRect(); 42 43 if (const ShadowList* textShadow = style()->textShadow()) 44 textShadow->adjustRectForShadow(borderRect); 45 46 return borderRect; 47 } 48 49 void RenderSVGBlock::updateFromStyle() 50 { 51 RenderBlock::updateFromStyle(); 52 53 // RenderSVGlock, used by Render(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true). 54 // RenderBlock assumes a layer to be present when the overflow clip functionality is requested. Both 55 // Render(SVGText|ForeignObject) return 'NoLayer' on 'layerTypeRequired'. Fine for RenderSVGText. 56 // 57 // If we want to support overflow rules for <foreignObject> we can choose between two solutions: 58 // a) make RenderSVGForeignObject require layers and SVG layer aware 59 // b) reactor overflow logic out of RenderLayer (as suggested by dhyatt), which is a large task 60 // 61 // Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010). 62 // 63 // Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled 64 // manually by RenderSVGRoot - which owns the documents enclosing root layer and thus works fine. 65 setHasOverflowClip(false); 66 } 67 68 void RenderSVGBlock::absoluteRects(Vector<IntRect>&, const LayoutPoint&) const 69 { 70 // This code path should never be taken for SVG, as we're assuming useTransforms=true everywhere, absoluteQuads should be used. 71 ASSERT_NOT_REACHED(); 72 } 73 74 void RenderSVGBlock::willBeDestroyed() 75 { 76 SVGResourcesCache::clientDestroyed(this); 77 RenderBlockFlow::willBeDestroyed(); 78 } 79 80 void RenderSVGBlock::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 81 { 82 if (diff.needsFullLayout()) 83 setNeedsBoundariesUpdate(); 84 85 RenderBlock::styleDidChange(diff, oldStyle); 86 SVGResourcesCache::clientStyleChanged(this, diff, style()); 87 } 88 89 void RenderSVGBlock::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const 90 { 91 SVGRenderSupport::mapLocalToContainer(this, paintInvalidationContainer, transformState, wasFixed, paintInvalidationState); 92 } 93 94 const RenderObject* RenderSVGBlock::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const 95 { 96 return SVGRenderSupport::pushMappingToContainer(this, ancestorToStopAt, geometryMap); 97 } 98 99 LayoutRect RenderSVGBlock::clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, const PaintInvalidationState* paintInvalidationState) const 100 { 101 return SVGRenderSupport::clippedOverflowRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationState); 102 } 103 104 void RenderSVGBlock::computeFloatRectForPaintInvalidation(const RenderLayerModelObject* paintInvalidationContainer, FloatRect& paintInvalidationRect, const PaintInvalidationState* paintInvalidationState) const 105 { 106 SVGRenderSupport::computeFloatRectForPaintInvalidation(this, paintInvalidationContainer, paintInvalidationRect, paintInvalidationState); 107 } 108 109 bool RenderSVGBlock::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction) 110 { 111 ASSERT_NOT_REACHED(); 112 return false; 113 } 114 115 void RenderSVGBlock::invalidateTreeIfNeeded(const PaintInvalidationState& paintInvalidationState) 116 { 117 if (!shouldCheckForPaintInvalidation(paintInvalidationState)) 118 return; 119 120 ForceHorriblySlowRectMapping slowRectMapping(&paintInvalidationState); 121 RenderBlockFlow::invalidateTreeIfNeeded(paintInvalidationState); 122 } 123 124 } 125