1/* 2 * Copyright (C) 2007 Eric Seidel <eric@webkit.org> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20#include "config.h" 21 22#include "core/rendering/svg/RenderSVGGradientStop.h" 23 24#include "SVGNames.h" 25#include "core/rendering/svg/RenderSVGResourceContainer.h" 26#include "core/svg/SVGGradientElement.h" 27#include "core/svg/SVGStopElement.h" 28 29namespace WebCore { 30 31using namespace SVGNames; 32 33RenderSVGGradientStop::RenderSVGGradientStop(SVGStopElement* element) 34 : RenderObject(element) 35{ 36} 37 38RenderSVGGradientStop::~RenderSVGGradientStop() 39{ 40} 41 42void RenderSVGGradientStop::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 43{ 44 RenderObject::styleDidChange(diff, oldStyle); 45 if (diff == StyleDifferenceEqual) 46 return; 47 48 // <stop> elements should only be allowed to make renderers under gradient elements 49 // but I can imagine a few cases we might not be catching, so let's not crash if our parent isn't a gradient. 50 SVGGradientElement* gradient = gradientElement(); 51 if (!gradient) 52 return; 53 54 RenderObject* renderer = gradient->renderer(); 55 if (!renderer) 56 return; 57 58 ASSERT(renderer->isSVGResourceContainer()); 59 RenderSVGResourceContainer* container = renderer->toRenderSVGResourceContainer(); 60 container->removeAllClientsFromCache(); 61} 62 63void RenderSVGGradientStop::layout() 64{ 65 StackStats::LayoutCheckPoint layoutCheckPoint; 66 clearNeedsLayout(); 67} 68 69SVGGradientElement* RenderSVGGradientStop::gradientElement() const 70{ 71 ContainerNode* parentNode = node()->parentNode(); 72 if (parentNode->hasTagName(linearGradientTag) || parentNode->hasTagName(radialGradientTag)) 73 return toSVGGradientElement(parentNode); 74 return 0; 75} 76 77} 78