blob: 9214fedfbb72c1dfee2ceeba42fac169b3759005 [file] [log] [blame]
/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 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 "SVGFEGaussianBlurElement.h"
#include "FEGaussianBlur.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEGaussianBlurElement);
inline SVGFEGaussianBlurElement::SVGFEGaussianBlurElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feGaussianBlurTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEGaussianBlurElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::stdDeviationAttr, &SVGFEGaussianBlurElement::m_stdDeviationX, &SVGFEGaussianBlurElement::m_stdDeviationY>();
PropertyRegistry::registerProperty<SVGNames::edgeModeAttr, EdgeModeType, &SVGFEGaussianBlurElement::m_edgeMode>();
});
}
Ref<SVGFEGaussianBlurElement> SVGFEGaussianBlurElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEGaussianBlurElement(tagName, document));
}
void SVGFEGaussianBlurElement::setStdDeviation(float x, float y)
{
m_stdDeviationX->setBaseValInternal(x);
m_stdDeviationY->setBaseValInternal(y);
updateSVGRendererForElementChange();
}
void SVGFEGaussianBlurElement::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::edgeModeAttr) {
auto propertyValue = SVGPropertyTraits<EdgeModeType>::fromString(value);
if (propertyValue != EdgeModeType::Unknown)
m_edgeMode->setBaseValInternal<EdgeModeType>(propertyValue);
else
document().accessSVGExtensions().reportWarning("feGaussianBlur: problem parsing edgeMode=\"" + value + "\". Filtered element will not be displayed.");
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
void SVGFEGaussianBlurElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::inAttr) {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
if (attrName == SVGNames::stdDeviationAttr && (stdDeviationX() < 0 || stdDeviationY() < 0)) {
InstanceInvalidationGuard guard(*this);
markFilterEffectForRebuild();
return;
}
if (attrName == SVGNames::stdDeviationAttr || attrName == SVGNames::edgeModeAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
bool SVGFEGaussianBlurElement::setFilterEffectAttribute(FilterEffect& effect, const QualifiedName& attrName)
{
auto& feGaussianBlur = downcast<FEGaussianBlur>(effect);
if (attrName == SVGNames::stdDeviationAttr) {
bool stdDeviationXChanged = feGaussianBlur.setStdDeviationX(stdDeviationX());
bool stdDeviationYChanged = feGaussianBlur.setStdDeviationY(stdDeviationY());
return stdDeviationXChanged || stdDeviationYChanged;
}
if (attrName == SVGNames::edgeModeAttr)
return feGaussianBlur.setEdgeMode(edgeMode());
ASSERT_NOT_REACHED();
return false;
}
IntOutsets SVGFEGaussianBlurElement::outsets(const FloatRect& targetBoundingBox, SVGUnitTypes::SVGUnitType primitiveUnits) const
{
auto stdDeviation = SVGFilter::calculateResolvedSize({ stdDeviationX(), stdDeviationY() }, targetBoundingBox, primitiveUnits);
return FEGaussianBlur::calculateOutsets(stdDeviation);
}
RefPtr<FilterEffect> SVGFEGaussianBlurElement::createFilterEffect(const FilterEffectVector&, const GraphicsContext&) const
{
if (stdDeviationX() < 0 || stdDeviationY() < 0)
return nullptr;
return FEGaussianBlur::create(stdDeviationX(), stdDeviationY(), edgeMode());
}
} // namespace WebCore