SVGFEBlendElement.cpp [plain text]
#include "config.h"
#if ENABLE(FILTERS)
#include "SVGFEBlendElement.h"
#include "Attribute.h"
#include "FilterEffect.h"
#include "SVGElementInstance.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::inAttr, In1, in1)
DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::in2Attr, In2, in2)
DEFINE_ANIMATED_ENUMERATION(SVGFEBlendElement, SVGNames::modeAttr, Mode, mode, BlendMode)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEBlendElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(in1)
REGISTER_LOCAL_ANIMATED_PROPERTY(in2)
REGISTER_LOCAL_ANIMATED_PROPERTY(mode)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
, m_mode(BlendModeNormal)
{
ASSERT(hasTagName(SVGNames::feBlendTag));
registerAnimatedPropertiesForSVGFEBlendElement();
}
PassRefPtr<SVGFEBlendElement> SVGFEBlendElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(new SVGFEBlendElement(tagName, document));
}
bool SVGFEBlendElement::isSupportedAttribute(const QualifiedName& attrName)
{
static NeverDestroyed<HashSet<QualifiedName>> supportedAttributes;
if (supportedAttributes.get().isEmpty()) {
supportedAttributes.get().add(SVGNames::modeAttr);
supportedAttributes.get().add(SVGNames::inAttr);
supportedAttributes.get().add(SVGNames::in2Attr);
}
return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName);
}
void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
return;
}
if (name == SVGNames::modeAttr) {
BlendMode mode = BlendModeNormal;
if (parseBlendMode(value, mode))
setModeBaseValue(mode);
return;
}
if (name == SVGNames::inAttr) {
setIn1BaseValue(value);
return;
}
if (name == SVGNames::in2Attr) {
setIn2BaseValue(value);
return;
}
ASSERT_NOT_REACHED();
}
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 (!isSupportedAttribute(attrName)) {
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::modeAttr) {
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
invalidate();
return;
}
ASSERT_NOT_REACHED();
}
PassRefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
{
FilterEffect* input1 = filterBuilder->getEffectById(in1());
FilterEffect* input2 = filterBuilder->getEffectById(in2());
if (!input1 || !input2)
return 0;
RefPtr<FilterEffect> effect = FEBlend::create(filter, mode());
FilterEffectVector& inputEffects = effect->inputEffects();
inputEffects.reserveCapacity(2);
inputEffects.append(input1);
inputEffects.append(input2);
return effect.release();
}
}
#endif