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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 "RenderStyle.h"
#include "SVGFELightElement.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDiffuseLightingElement);
inline SVGFEDiffuseLightingElement::SVGFEDiffuseLightingElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
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::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == SVGNames::inAttr) {
m_in1->setBaseValInternal(value);
return;
}
if (name == SVGNames::surfaceScaleAttr) {
m_surfaceScale->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::diffuseConstantAttr) {
m_diffuseConstant->setBaseValInternal(value.toFloat());
return;
}
if (name == SVGNames::kernelUnitLengthAttr) {
if (auto result = parseNumberOptionalNumber(value)) {
m_kernelUnitLengthX->setBaseValInternal(result->first);
m_kernelUnitLengthY->setBaseValInternal(result->second);
}
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
bool SVGFEDiffuseLightingElement::setFilterEffectAttribute(FilterEffect& effect, const QualifiedName& attrName)
{
auto& feDiffuseLighting = downcast<FEDiffuseLighting>(effect);
if (attrName == SVGNames::lighting_colorAttr) {
RenderObject* renderer = this->renderer();
ASSERT(renderer);
Color color = renderer->style().colorByApplyingColorFilter(renderer->style().svgStyle().lightingColor());
return feDiffuseLighting.setLightingColor(color);
}
if (attrName == SVGNames::surfaceScaleAttr)
return feDiffuseLighting.setSurfaceScale(surfaceScale());
if (attrName == SVGNames::diffuseConstantAttr)
return feDiffuseLighting.setDiffuseConstant(diffuseConstant());
auto& lightSource = const_cast<LightSource&>(feDiffuseLighting.lightSource());
const SVGFELightElement* lightElement = SVGFELightElement::findLightElement(this);
ASSERT(lightElement);
if (attrName == SVGNames::azimuthAttr)
return lightSource.setAzimuth(lightElement->azimuth());
if (attrName == SVGNames::elevationAttr)
return lightSource.setElevation(lightElement->elevation());
if (attrName == SVGNames::xAttr)
return lightSource.setX(lightElement->x());
if (attrName == SVGNames::yAttr)
return lightSource.setY(lightElement->y());
if (attrName == SVGNames::zAttr)
return lightSource.setZ(lightElement->z());
if (attrName == SVGNames::pointsAtXAttr)
return lightSource.setPointsAtX(lightElement->pointsAtX());
if (attrName == SVGNames::pointsAtYAttr)
return lightSource.setPointsAtY(lightElement->pointsAtY());
if (attrName == SVGNames::pointsAtZAttr)
return lightSource.setPointsAtZ(lightElement->pointsAtZ());
if (attrName == SVGNames::specularExponentAttr)
return lightSource.setSpecularExponent(lightElement->specularExponent());
if (attrName == SVGNames::limitingConeAngleAttr)
return lightSource.setLimitingConeAngle(lightElement->limitingConeAngle());
ASSERT_NOT_REACHED();
return false;
}
void SVGFEDiffuseLightingElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::inAttr) {
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
if (attrName == SVGNames::diffuseConstantAttr || attrName == SVGNames::surfaceScaleAttr || attrName == SVGNames::kernelUnitLengthAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
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();
Color color = renderer->style().colorByApplyingColorFilter(renderer->style().svgStyle().lightingColor());
return FEDiffuseLighting::create(color, surfaceScale(), diffuseConstant(), kernelUnitLengthX(), kernelUnitLengthY(), WTFMove(lightSource));
}
} // namespace WebCore