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/*
* Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
* 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 "SVGFEDiffuseLightingElement.h"
#include "FEDiffuseLighting.h"
#include "NodeName.h"
#include "RenderStyle.h"
#include "SVGFELightElement.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include "SVGRenderStyle.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDiffuseLightingElement);
inline SVGFEDiffuseLightingElement::SVGFEDiffuseLightingElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(SVGNames::feDiffuseLightingTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEDiffuseLightingElement::m_in1>();
PropertyRegistry::registerProperty<SVGNames::diffuseConstantAttr, &SVGFEDiffuseLightingElement::m_diffuseConstant>();
PropertyRegistry::registerProperty<SVGNames::surfaceScaleAttr, &SVGFEDiffuseLightingElement::m_surfaceScale>();
PropertyRegistry::registerProperty<SVGNames::kernelUnitLengthAttr, &SVGFEDiffuseLightingElement::m_kernelUnitLengthX, &SVGFEDiffuseLightingElement::m_kernelUnitLengthY>();
});
}
Ref<SVGFEDiffuseLightingElement> SVGFEDiffuseLightingElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEDiffuseLightingElement(tagName, document));
}
void SVGFEDiffuseLightingElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
switch (name.nodeName()) {
case AttributeNames::inAttr:
m_in1->setBaseValInternal(newValue);
break;
case AttributeNames::surfaceScaleAttr:
m_surfaceScale->setBaseValInternal(newValue.toFloat());
break;
case AttributeNames::diffuseConstantAttr:
m_diffuseConstant->setBaseValInternal(newValue.toFloat());
break;
case AttributeNames::kernelUnitLengthAttr:
if (auto result = parseNumberOptionalNumber(newValue)) {
m_kernelUnitLengthX->setBaseValInternal(result->first);
m_kernelUnitLengthY->setBaseValInternal(result->second);
}
break;
default:
break;
}
SVGFilterPrimitiveStandardAttributes::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
bool SVGFEDiffuseLightingElement::setFilterEffectAttribute(FilterEffect& filterEffect, const QualifiedName& attrName)
{
auto& effect = downcast<FEDiffuseLighting>(filterEffect);
auto lightElement = [this] {
return SVGFELightElement::findLightElement(this);
};
switch (attrName.nodeName()) {
case AttributeNames::lighting_colorAttr: {
auto& style = renderer()->style();
auto color = style.colorWithColorFilter(style.svgStyle().lightingColor());
return effect.setLightingColor(color);
}
case AttributeNames::surfaceScaleAttr:
return effect.setSurfaceScale(surfaceScale());
case AttributeNames::diffuseConstantAttr:
return effect.setDiffuseConstant(diffuseConstant());
case AttributeNames::azimuthAttr:
return effect.lightSource()->setAzimuth(lightElement()->azimuth());
case AttributeNames::elevationAttr:
return effect.lightSource()->setElevation(lightElement()->elevation());
case AttributeNames::xAttr:
return effect.lightSource()->setX(lightElement()->x());
case AttributeNames::yAttr:
return effect.lightSource()->setY(lightElement()->y());
case AttributeNames::zAttr:
return effect.lightSource()->setZ(lightElement()->z());
case AttributeNames::pointsAtXAttr:
return effect.lightSource()->setPointsAtX(lightElement()->pointsAtX());
case AttributeNames::pointsAtYAttr:
return effect.lightSource()->setPointsAtY(lightElement()->pointsAtY());
case AttributeNames::pointsAtZAttr:
return effect.lightSource()->setPointsAtZ(lightElement()->pointsAtZ());
case AttributeNames::specularExponentAttr:
return effect.lightSource()->setSpecularExponent(lightElement()->specularExponent());
case AttributeNames::limitingConeAngleAttr:
return effect.lightSource()->setLimitingConeAngle(lightElement()->limitingConeAngle());
default:
break;
}
ASSERT_NOT_REACHED();
return false;
}
void SVGFEDiffuseLightingElement::svgAttributeChanged(const QualifiedName& attrName)
{
switch (attrName.nodeName()) {
case AttributeNames::inAttr: {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
break;
}
case AttributeNames::diffuseConstantAttr:
case AttributeNames::surfaceScaleAttr:
case AttributeNames::kernelUnitLengthAttr: {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
break;
}
default:
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
break;
}
}
void SVGFEDiffuseLightingElement::lightElementAttributeChanged(const SVGFELightElement* lightElement, const QualifiedName& attrName)
{
if (SVGFELightElement::findLightElement(this) != lightElement)
return;
// The light element has different attribute names.
primitiveAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEDiffuseLightingElement::createFilterEffect(const FilterEffectVector&, const GraphicsContext&) const
{
RefPtr lightElement = SVGFELightElement::findLightElement(this);
if (!lightElement)
return nullptr;
auto* renderer = this->renderer();
if (!renderer)
return nullptr;
auto lightSource = lightElement->lightSource();
auto& style = renderer->style();
Color color = style.colorWithColorFilter(style.svgStyle().lightingColor());
return FEDiffuseLighting::create(color, surfaceScale(), diffuseConstant(), kernelUnitLengthX(), kernelUnitLengthY(), WTFMove(lightSource));
}
} // namespace WebCore
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