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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* 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 "SVGFEOffsetElement.h"
#include "FEOffset.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEOffsetElement);
inline SVGFEOffsetElement::SVGFEOffsetElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feOffsetTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEOffsetElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::dxAttr, &SVGFEOffsetElement::m_dx>();
PropertyRegistry::registerProperty<SVGNames::dyAttr, &SVGFEOffsetElement::m_dy>();
});
}
Ref<SVGFEOffsetElement> SVGFEOffsetElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEOffsetElement(tagName, document));
}
void SVGFEOffsetElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::dxAttr) {
m_dx->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::dyAttr) {
m_dy->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::inAttr) {
m_in1->setBaseValInternal(value);
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
void SVGFEOffsetElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::inAttr) {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
if (attrName == SVGNames::dxAttr || attrName == SVGNames::dyAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
bool SVGFEOffsetElement::setFilterEffectAttribute(FilterEffect& effect, const QualifiedName& attrName)
{
auto& offset = downcast<FEOffset>(effect);
if (attrName == SVGNames::dxAttr)
return offset.setDx(dx());
if (attrName == SVGNames::dyAttr)
return offset.setDy(dy());
ASSERT_NOT_REACHED();
return false;
}
bool SVGFEOffsetElement::isIdentity() const
{
return !dx() && !dy();
}
IntOutsets SVGFEOffsetElement::outsets(const FloatRect& targetBoundingBox, SVGUnitTypes::SVGUnitType primitiveUnits) const
{
auto offset = SVGFilter::calculateResolvedSize({ dx(), dy() }, targetBoundingBox, primitiveUnits);
return FEOffset::calculateOutsets(offset);
}
RefPtr<FilterEffect> SVGFEOffsetElement::createFilterEffect(const FilterEffectVector&, const GraphicsContext&) const
{
return FEOffset::create(dx(), dy());
}
} // namespace WebCore
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