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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 "SVGFEComponentTransferElement.h"
#include "ElementChildIteratorInlines.h"
#include "FEComponentTransfer.h"
#include "NodeName.h"
#include "SVGComponentTransferFunctionElement.h"
#include "SVGComponentTransferFunctionElementInlines.h"
#include "SVGElementTypeHelpers.h"
#include "SVGNames.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(SVGFEComponentTransferElement);
inline SVGFEComponentTransferElement::SVGFEComponentTransferElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(SVGNames::feComponentTransferTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEComponentTransferElement::m_in1>();
});
}
Ref<SVGFEComponentTransferElement> SVGFEComponentTransferElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEComponentTransferElement(tagName, document));
}
void SVGFEComponentTransferElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
if (name == SVGNames::inAttr)
Ref { m_in1 }->setBaseValInternal(newValue);
SVGFilterPrimitiveStandardAttributes::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGFEComponentTransferElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::inAttr) {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEComponentTransferElement::createFilterEffect(const FilterEffectVector&, const GraphicsContext&) const
{
ComponentTransferFunctions functions;
for (auto& child : childrenOfType<SVGComponentTransferFunctionElement>(*this))
functions[child.channel()] = child.transferFunction();
return FEComponentTransfer::create(WTFMove(functions));
}
static bool isRelevantTransferFunctionElement(const Element& child)
{
auto name = child.elementName();
ASSERT(is<SVGComponentTransferFunctionElement>(child));
for (auto laterSibling = child.nextElementSibling(); laterSibling; laterSibling = laterSibling->nextElementSibling()) {
if (laterSibling->elementName() == name)
return false;
}
return true;
}
bool SVGFEComponentTransferElement::setFilterEffectAttributeFromChild(FilterEffect& filterEffect, const Element& childElement, const QualifiedName& attrName)
{
ASSERT(isRelevantTransferFunctionElement(childElement));
RefPtr child = dynamicDowncast<SVGComponentTransferFunctionElement>(childElement);
ASSERT(child);
if (!child)
return false;
auto& effect = downcast<FEComponentTransfer>(filterEffect);
switch (attrName.nodeName()) {
case AttributeNames::typeAttr:
return effect.setType(child->channel(), child->type());
case AttributeNames::slopeAttr:
return effect.setSlope(child->channel(), child->slope());
case AttributeNames::interceptAttr:
return effect.setIntercept(child->channel(), child->intercept());
case AttributeNames::amplitudeAttr:
return effect.setAmplitude(child->channel(), child->amplitude());
case AttributeNames::exponentAttr:
return effect.setExponent(child->channel(), child->exponent());
case AttributeNames::offsetAttr:
return effect.setOffset(child->channel(), child->offset());
case AttributeNames::tableValuesAttr:
return effect.setTableValues(child->channel(), child->tableValues());
default:
break;
}
return false;
}
void SVGFEComponentTransferElement::transferFunctionAttributeChanged(SVGComponentTransferFunctionElement& child, const QualifiedName& attrName)
{
ASSERT(child.parentNode() == this);
if (!isRelevantTransferFunctionElement(child))
return;
primitiveAttributeOnChildChanged(child, attrName);
}
} // namespace WebCore
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