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/*
* 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"
#include "RenderSVGGradientStop.h"
#include "ElementInlines.h"
#include "LegacyRenderSVGResourceContainer.h"
#include "RenderSVGGradientStopInlines.h"
#include "RenderSVGResourceGradient.h"
#include "SVGElementTypeHelpers.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include "SVGStopElement.h"
#include <wtf/StackStats.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
using namespace SVGNames;
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(RenderSVGGradientStop);
RenderSVGGradientStop::RenderSVGGradientStop(SVGStopElement& element, RenderStyle&& style)
: RenderElement(Type::SVGGradientStop, element, WTFMove(style), { }, { })
{
ASSERT(isRenderSVGGradientStop());
}
RenderSVGGradientStop::~RenderSVGGradientStop() = default;
void RenderSVGGradientStop::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderElement::styleDidChange(diff, oldStyle);
if (diff == StyleDifference::Equal)
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.
RefPtr gradient = gradientElement();
if (!gradient)
return;
CheckedPtr renderer = gradient->renderer();
if (!renderer)
return;
if (auto* gradientRenderer = dynamicDowncast<RenderSVGResourceGradient>(renderer.get())) {
gradientRenderer->invalidateGradient();
return;
}
downcast<LegacyRenderSVGResourceContainer>(*renderer).removeAllClientsFromCache();
}
void RenderSVGGradientStop::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
clearNeedsLayout();
}
SVGGradientElement* RenderSVGGradientStop::gradientElement()
{
return dynamicDowncast<SVGGradientElement>(element().protectedParentElement().get());
}
}
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