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/*
* This file is part of the WebKit project.
*
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#if ENABLE(SVG)
#include "RenderSVGGradientStop.h"
#include "RenderSVGResourceContainer.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include "SVGResourcesCache.h"
#include "SVGStopElement.h"
namespace WebCore {
using namespace SVGNames;
RenderSVGGradientStop::RenderSVGGradientStop(SVGStopElement* element)
: RenderObject(element)
{
}
RenderSVGGradientStop::~RenderSVGGradientStop()
{
}
void RenderSVGGradientStop::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderObject::styleDidChange(diff, oldStyle);
if (diff == StyleDifferenceEqual)
return;
// <stop> elements should only be allowed to make renderers under gradient elements
// but I can imagine a few cases we might not be catching, so let's not crash if our parent isn't a gradient.
SVGGradientElement* gradient = gradientElement();
if (!gradient)
return;
RenderObject* renderer = gradient->renderer();
if (!renderer)
return;
ASSERT(renderer->isSVGResourceContainer());
RenderSVGResourceContainer* container = renderer->toRenderSVGResourceContainer();
container->removeAllClientsFromCache();
}
void RenderSVGGradientStop::layout()
{
setNeedsLayout(false);
}
SVGGradientElement* RenderSVGGradientStop::gradientElement() const
{
ContainerNode* parentNode = node()->parent();
if (parentNode->hasTagName(linearGradientTag) || parentNode->hasTagName(radialGradientTag))
return static_cast<SVGGradientElement*>(parentNode);
return 0;
}
}
#endif // ENABLE(SVG)
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