SVGFEBlendElement.cpp [plain text]
#include "config.h"
#include "SVGFEBlendElement.h"
#include "FEBlend.h"
#include "FilterEffect.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEBlendElement);
inline SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feBlendTag));
registerAttributes();
}
Ref<SVGFEBlendElement> SVGFEBlendElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEBlendElement(tagName, document));
}
void SVGFEBlendElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEBlendElement::m_in1>();
registry.registerAttribute<SVGNames::in2Attr, &SVGFEBlendElement::m_in2>();
registry.registerAttribute<SVGNames::modeAttr, BlendMode, &SVGFEBlendElement::m_mode>();
}
void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::modeAttr) {
BlendMode mode = BlendMode::Normal;
if (parseBlendMode(value, mode))
m_mode.setValue(mode);
return;
}
if (name == SVGNames::inAttr) {
m_in1.setValue(value);
return;
}
if (name == SVGNames::in2Attr) {
m_in2.setValue(value);
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
{
FEBlend* blend = static_cast<FEBlend*>(effect);
if (attrName == SVGNames::modeAttr)
return blend->setBlendMode(mode());
ASSERT_NOT_REACHED();
return false;
}
void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::modeAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter& filter)
{
auto input1 = filterBuilder->getEffectById(in1());
auto input2 = filterBuilder->getEffectById(in2());
if (!input1 || !input2)
return nullptr;
auto effect = FEBlend::create(filter, mode());
FilterEffectVector& inputEffects = effect->inputEffects();
inputEffects.reserveCapacity(2);
inputEffects.append(input1);
inputEffects.append(input2);
return WTFMove(effect);
}
}