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/*
* Copyright (C) 2009 Dirk Schulze <krit@webkit.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 "core/svg/SVGFEMorphologyElement.h"
#include "core/SVGNames.h"
#include "core/svg/graphics/filters/SVGFilterBuilder.h"
namespace blink {
template <>
const SVGEnumerationStringEntries&
getStaticStringEntries<MorphologyOperatorType>() {
DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
if (entries.isEmpty()) {
entries.push_back(std::make_pair(FEMORPHOLOGY_OPERATOR_ERODE, "erode"));
entries.push_back(std::make_pair(FEMORPHOLOGY_OPERATOR_DILATE, "dilate"));
}
return entries;
}
inline SVGFEMorphologyElement::SVGFEMorphologyElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(SVGNames::feMorphologyTag, document),
m_radius(
SVGAnimatedNumberOptionalNumber::create(this, SVGNames::radiusAttr)),
m_in1(SVGAnimatedString::create(this, SVGNames::inAttr)),
m_svgOperator(SVGAnimatedEnumeration<MorphologyOperatorType>::create(
this,
SVGNames::operatorAttr,
FEMORPHOLOGY_OPERATOR_ERODE)) {
addToPropertyMap(m_radius);
addToPropertyMap(m_in1);
addToPropertyMap(m_svgOperator);
}
DEFINE_TRACE(SVGFEMorphologyElement) {
visitor->trace(m_radius);
visitor->trace(m_in1);
visitor->trace(m_svgOperator);
SVGFilterPrimitiveStandardAttributes::trace(visitor);
}
DEFINE_NODE_FACTORY(SVGFEMorphologyElement)
bool SVGFEMorphologyElement::setFilterEffectAttribute(
FilterEffect* effect,
const QualifiedName& attrName) {
FEMorphology* morphology = static_cast<FEMorphology*>(effect);
if (attrName == SVGNames::operatorAttr)
return morphology->setMorphologyOperator(
m_svgOperator->currentValue()->enumValue());
if (attrName == SVGNames::radiusAttr) {
// Both setRadius functions should be evaluated separately.
bool isRadiusXChanged =
morphology->setRadiusX(radiusX()->currentValue()->value());
bool isRadiusYChanged =
morphology->setRadiusY(radiusY()->currentValue()->value());
return isRadiusXChanged || isRadiusYChanged;
}
return SVGFilterPrimitiveStandardAttributes::setFilterEffectAttribute(
effect, attrName);
}
void SVGFEMorphologyElement::svgAttributeChanged(
const QualifiedName& attrName) {
if (attrName == SVGNames::operatorAttr || attrName == SVGNames::radiusAttr) {
SVGElement::InvalidationGuard invalidationGuard(this);
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr) {
SVGElement::InvalidationGuard invalidationGuard(this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
FilterEffect* SVGFEMorphologyElement::build(SVGFilterBuilder* filterBuilder,
Filter* filter) {
FilterEffect* input1 = filterBuilder->getEffectById(
AtomicString(m_in1->currentValue()->value()));
if (!input1)
return nullptr;
// "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)
float xRadius = radiusX()->currentValue()->value();
float yRadius = radiusY()->currentValue()->value();
FilterEffect* effect = FEMorphology::create(
filter, m_svgOperator->currentValue()->enumValue(), xRadius, yRadius);
effect->inputEffects().push_back(input1);
return effect;
}
} // namespace blink
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