SVGFEDisplacementMapElement.cpp [plain text]
#include "config.h"
#include "SVGFEDisplacementMapElement.h"
#include "FilterEffect.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDisplacementMapElement);
inline SVGFEDisplacementMapElement::SVGFEDisplacementMapElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feDisplacementMapTag));
registerAttributes();
}
Ref<SVGFEDisplacementMapElement> SVGFEDisplacementMapElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEDisplacementMapElement(tagName, document));
}
void SVGFEDisplacementMapElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEDisplacementMapElement::m_in1>();
registry.registerAttribute<SVGNames::in2Attr, &SVGFEDisplacementMapElement::m_in2>();
registry.registerAttribute<SVGNames::xChannelSelectorAttr, ChannelSelectorType, &SVGFEDisplacementMapElement::m_xChannelSelector>();
registry.registerAttribute<SVGNames::yChannelSelectorAttr, ChannelSelectorType, &SVGFEDisplacementMapElement::m_yChannelSelector>();
registry.registerAttribute<SVGNames::scaleAttr, &SVGFEDisplacementMapElement::m_scale>();
}
void SVGFEDisplacementMapElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::xChannelSelectorAttr) {
auto propertyValue = SVGPropertyTraits<ChannelSelectorType>::fromString(value);
if (propertyValue > 0)
m_xChannelSelector.setValue(propertyValue);
return;
}
if (name == SVGNames::yChannelSelectorAttr) {
auto propertyValue = SVGPropertyTraits<ChannelSelectorType>::fromString(value);
if (propertyValue > 0)
m_yChannelSelector.setValue(propertyValue);
return;
}
if (name == SVGNames::inAttr) {
m_in1.setValue(value);
return;
}
if (name == SVGNames::in2Attr) {
m_in2.setValue(value);
return;
}
if (name == SVGNames::scaleAttr) {
m_scale.setValue(value.toFloat());
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
bool SVGFEDisplacementMapElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
{
FEDisplacementMap* displacementMap = static_cast<FEDisplacementMap*>(effect);
if (attrName == SVGNames::xChannelSelectorAttr)
return displacementMap->setXChannelSelector(xChannelSelector());
if (attrName == SVGNames::yChannelSelectorAttr)
return displacementMap->setYChannelSelector(yChannelSelector());
if (attrName == SVGNames::scaleAttr)
return displacementMap->setScale(scale());
ASSERT_NOT_REACHED();
return false;
}
void SVGFEDisplacementMapElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::xChannelSelectorAttr || attrName == SVGNames::yChannelSelectorAttr || attrName == SVGNames::scaleAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEDisplacementMapElement::build(SVGFilterBuilder* filterBuilder, Filter& filter)
{
auto input1 = filterBuilder->getEffectById(in1());
auto input2 = filterBuilder->getEffectById(in2());
if (!input1 || !input2)
return nullptr;
auto effect = FEDisplacementMap::create(filter, xChannelSelector(), yChannelSelector(), scale());
FilterEffectVector& inputEffects = effect->inputEffects();
inputEffects.reserveCapacity(2);
inputEffects.append(input1);
inputEffects.append(input2);
return WTFMove(effect);
}
}