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/*
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
* Copyright (C) 2018-2023 Apple Inc. All rights reserved.
* Copyright (C) 2014-2015 Google 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 "SVGFEMorphologyElement.h"
#include "FEMorphology.h"
#include "NodeName.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEMorphologyElement);
inline SVGFEMorphologyElement::SVGFEMorphologyElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(SVGNames::feMorphologyTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEMorphologyElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::operatorAttr, MorphologyOperatorType, &SVGFEMorphologyElement::m_svgOperator>();
PropertyRegistry::registerProperty<SVGNames::radiusAttr, &SVGFEMorphologyElement::m_radiusX, &SVGFEMorphologyElement::m_radiusY>();
});
}
Ref<SVGFEMorphologyElement> SVGFEMorphologyElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEMorphologyElement(tagName, document));
}
void SVGFEMorphologyElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
switch (name.nodeName()) {
case AttributeNames::operatorAttr: {
MorphologyOperatorType propertyValue = SVGPropertyTraits<MorphologyOperatorType>::fromString(newValue);
if (propertyValue != MorphologyOperatorType::Unknown)
m_svgOperator->setBaseValInternal<MorphologyOperatorType>(propertyValue);
break;
}
case AttributeNames::inAttr:
m_in1->setBaseValInternal(newValue);
break;
case AttributeNames::radiusAttr:
if (auto result = parseNumberOptionalNumber(newValue)) {
m_radiusX->setBaseValInternal(result->first);
m_radiusY->setBaseValInternal(result->second);
}
break;
default:
break;
}
SVGFilterPrimitiveStandardAttributes::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
bool SVGFEMorphologyElement::setFilterEffectAttribute(FilterEffect& effect, const QualifiedName& attrName)
{
auto& feMorphology = downcast<FEMorphology>(effect);
if (attrName == SVGNames::operatorAttr)
return feMorphology.setMorphologyOperator(svgOperator());
if (attrName == SVGNames::radiusAttr) {
// Both setRadius functions should be evaluated separately.
bool isRadiusXChanged = feMorphology.setRadiusX(radiusX());
bool isRadiusYChanged = feMorphology.setRadiusY(radiusY());
return isRadiusXChanged || isRadiusYChanged;
}
ASSERT_NOT_REACHED();
return false;
}
void SVGFEMorphologyElement::svgAttributeChanged(const QualifiedName& attrName)
{
switch (attrName.nodeName()) {
case AttributeNames::inAttr: {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
break;
}
case AttributeNames::operatorAttr:
case AttributeNames::radiusAttr: {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
break;
}
default:
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
break;
}
}
bool SVGFEMorphologyElement::isIdentity() const
{
return !std::max(0.0f, radiusX()) && !std::max(0.0f, radiusY());
}
IntOutsets SVGFEMorphologyElement::outsets(const FloatRect& targetBoundingBox, SVGUnitTypes::SVGUnitType primitiveUnits) const
{
auto radius = SVGFilter::calculateResolvedSize({ radiusX(), radiusY() }, targetBoundingBox, primitiveUnits);
return { radius.height(), radius.width(), radius.height(), radius.width() };
}
RefPtr<FilterEffect> SVGFEMorphologyElement::createFilterEffect(const FilterEffectVector&, const GraphicsContext&) const
{
// "A negative or zero value disables the effect of the given filter
// primitive (i.e., the result is the filter input image)."
// https://drafts.fxtf.org/filters/#element-attrdef-femorphology-radius
// This is handled by FEMorphology.
return FEMorphology::create(svgOperator(), radiusX(), radiusY());
}
} // namespace WebCore
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