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 "core/rendering/svg/RenderSVGResourceContainer.h" 25#include "core/svg/SVGGradientElement.h" 26#include "core/svg/SVGStopElement.h" 27 28namespace WebCore { 29 30RenderSVGGradientStop::RenderSVGGradientStop(SVGStopElement* element) 31 : RenderObject(element) 32{ 33} 34 35RenderSVGGradientStop::~RenderSVGGradientStop() 36{ 37} 38 39void RenderSVGGradientStop::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) 40{ 41 RenderObject::styleDidChange(diff, oldStyle); 42 if (diff.hasNoChange()) 43 return; 44 45 // <stop> elements should only be allowed to make renderers under gradient elements 46 // but I can imagine a few cases we might not be catching, so let's not crash if our parent isn't a gradient. 47 SVGGradientElement* gradient = gradientElement(); 48 if (!gradient) 49 return; 50 51 RenderObject* renderer = gradient->renderer(); 52 if (!renderer) 53 return; 54 55 RenderSVGResourceContainer* container = toRenderSVGResourceContainer(renderer); 56 container->removeAllClientsFromCache(); 57} 58 59void RenderSVGGradientStop::layout() 60{ 61 clearNeedsLayout(); 62} 63 64SVGGradientElement* RenderSVGGradientStop::gradientElement() const 65{ 66 ContainerNode* parentNode = node()->parentNode(); 67 ASSERT(parentNode); 68 return isSVGGradientElement(*parentNode) ? toSVGGradientElement(parentNode) : 0; 69} 70 71} 72