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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>
*
* 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 "SVGStopElement.h"
#include "Attribute.h"
#include "Document.h"
#include "RenderSVGGradientStop.h"
#include "RenderSVGResource.h"
#include "SVGElementInstance.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
namespace WebCore {
// Animated property definitions
DEFINE_ANIMATED_NUMBER(SVGStopElement, SVGNames::offsetAttr, Offset, offset)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGStopElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(offset)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGStyledElement)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGStopElement::SVGStopElement(const QualifiedName& tagName, Document* document)
: SVGStyledElement(tagName, document)
, m_offset(0)
{
ASSERT(hasTagName(SVGNames::stopTag));
registerAnimatedPropertiesForSVGStopElement();
}
PassRefPtr<SVGStopElement> SVGStopElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGStopElement(tagName, document));
}
bool SVGStopElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty())
supportedAttributes.add(SVGNames::offsetAttr);
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGStopElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGStyledElement::parseAttribute(name, value);
return;
}
if (name == SVGNames::offsetAttr) {
if (value.endsWith('%'))
setOffsetBaseValue(value.string().left(value.length() - 1).toFloat() / 100.0f);
else
setOffsetBaseValue(value.toFloat());
return;
}
ASSERT_NOT_REACHED();
}
void SVGStopElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGStyledElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
if (!renderer())
return;
if (attrName == SVGNames::offsetAttr) {
RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer());
return;
}
ASSERT_NOT_REACHED();
}
RenderObject* SVGStopElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderSVGGradientStop(this);
}
bool SVGStopElement::rendererIsNeeded(const NodeRenderingContext&)
{
return true;
}
Color SVGStopElement::stopColorIncludingOpacity() const
{
RenderStyle* style = renderer() ? renderer()->style() : 0;
// FIXME: This check for null style exists to address Bug WK 90814, a rare crash condition in
// which the renderer or style is null. This entire class is scheduled for removal (Bug WK 86941)
// and we will tolerate this null check until then.
if (!style || !style->svgStyle())
return Color(Color::transparent, true); // Transparent black.
const SVGRenderStyle* svgStyle = style->svgStyle();
return colorWithOverrideAlpha(svgStyle->stopColor().rgb(), svgStyle->stopOpacity());
}
}
#endif // ENABLE(SVG)
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