blob: 5ef6c376f5f507b9fc9d7e622754b61dce5999a2 [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) 2018-2019 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 "FilterEffect.h"
#include "SVGFilterBuilder.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);
invalidate();
}
void SVGFEGaussianBlurElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::stdDeviationAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y)) {
m_stdDeviationX->setBaseValInternal(x);
m_stdDeviationY->setBaseValInternal(y);
}
return;
}
if (name == SVGNames::inAttr) {
m_in1->setBaseValInternal(value);
return;
}
if (name == SVGNames::edgeModeAttr) {
auto propertyValue = SVGPropertyTraits<EdgeModeType>::fromString(value);
if (propertyValue > 0)
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 (PropertyRegistry::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder, Filter& filter) const
{
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
if (stdDeviationX() < 0 || stdDeviationY() < 0)
return nullptr;
auto effect = FEGaussianBlur::create(filter, stdDeviationX(), stdDeviationY(), edgeMode());
effect->inputEffects().append(input1);
return effect;
}
}