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/*
* Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2018-2019 Apple Inc. All rights reserved.
*
* 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 "SVGStopElement.h"
#include "Document.h"
#include "RenderSVGGradientStop.h"
#include "RenderSVGResource.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include "SVGRenderStyle.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGStopElement);
inline SVGStopElement::SVGStopElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(SVGNames::stopTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::offsetAttr, &SVGStopElement::m_offset>();
});
}
Ref<SVGStopElement> SVGStopElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGStopElement(tagName, document));
}
void SVGStopElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
if (name == SVGNames::offsetAttr) {
if (newValue.endsWith('%'))
m_offset->setBaseValInternal(newValue.string().left(newValue.length() - 1).toFloat() / 100.0f);
else
m_offset->setBaseValInternal(newValue.toFloat());
}
SVGElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGStopElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
ASSERT(attrName == SVGNames::offsetAttr);
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
SVGElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGStopElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGGradientStop>(*this, WTFMove(style));
}
bool SVGStopElement::rendererIsNeeded(const RenderStyle&)
{
return true;
}
Color SVGStopElement::stopColorIncludingOpacity() const
{
if (!renderer())
return Color::transparentBlack;
auto& style = renderer()->style();
auto& svgStyle = style.svgStyle();
auto stopColor = style.colorResolvingCurrentColor(svgStyle.stopColor());
return stopColor.colorWithAlphaMultipliedBy(svgStyle.stopOpacity());
}
}
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