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/*
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
* Copyright (C) 2018-2022 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 "SVGFEDropShadowElement.h"
#include "RenderStyle.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include "SVGRenderStyle.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDropShadowElement);
inline SVGFEDropShadowElement::SVGFEDropShadowElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feDropShadowTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEDropShadowElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::dxAttr, &SVGFEDropShadowElement::m_dx>();
PropertyRegistry::registerProperty<SVGNames::dyAttr, &SVGFEDropShadowElement::m_dy>();
PropertyRegistry::registerProperty<SVGNames::stdDeviationAttr, &SVGFEDropShadowElement::m_stdDeviationX, &SVGFEDropShadowElement::m_stdDeviationY>();
});
}
Ref<SVGFEDropShadowElement> SVGFEDropShadowElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEDropShadowElement(tagName, document));
}
void SVGFEDropShadowElement::setStdDeviation(float x, float y)
{
m_stdDeviationX->setBaseValInternal(x);
m_stdDeviationY->setBaseValInternal(y);
invalidate();
}
void SVGFEDropShadowElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::stdDeviationAttr) {
if (auto result = parseNumberOptionalNumber(value)) {
m_stdDeviationX->setBaseValInternal(result->first);
m_stdDeviationY->setBaseValInternal(result->second);
}
return;
}
if (name == SVGNames::inAttr) {
m_in1->setBaseValInternal(value);
return;
}
if (name == SVGNames::dxAttr) {
m_dx->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::dyAttr) {
m_dy->setBaseValInternal(value.toFloat());
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEDropShadowElement::filterEffect(const SVGFilterBuilder&, const FilterEffectVector&) const
{
RenderObject* renderer = this->renderer();
if (!renderer)
return nullptr;
if (stdDeviationX() < 0 || stdDeviationY() < 0)
return nullptr;
const SVGRenderStyle& svgStyle = renderer->style().svgStyle();
Color color = renderer->style().colorByApplyingColorFilter(svgStyle.floodColor());
float opacity = svgStyle.floodOpacity();
return FEDropShadow::create(stdDeviationX(), stdDeviationY(), dx(), dy(), color, opacity);
}
} // namespace WebCore