SVGFEColorMatrixElement.cpp [plain text]
#include "config.h"
#include "SVGFEColorMatrixElement.h"
#include "FilterEffect.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEColorMatrixElement);
inline SVGFEColorMatrixElement::SVGFEColorMatrixElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feColorMatrixTag));
registerAttributes();
}
Ref<SVGFEColorMatrixElement> SVGFEColorMatrixElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEColorMatrixElement(tagName, document));
}
void SVGFEColorMatrixElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEColorMatrixElement::m_in1>();
registry.registerAttribute<SVGNames::typeAttr, ColorMatrixType, &SVGFEColorMatrixElement::m_type>();
registry.registerAttribute<SVGNames::valuesAttr, &SVGFEColorMatrixElement::m_values>();
}
void SVGFEColorMatrixElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::typeAttr) {
auto propertyValue = SVGPropertyTraits<ColorMatrixType>::fromString(value);
if (propertyValue > 0)
m_type.setValue(propertyValue);
return;
}
if (name == SVGNames::inAttr) {
m_in1.setValue(value);
return;
}
if (name == SVGNames::valuesAttr) {
SVGNumberListValues newList;
newList.parse(value);
m_values.detachAnimatedListWrappers(attributeOwnerProxy(), newList.size());
m_values.setValue(WTFMove(newList));
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
bool SVGFEColorMatrixElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
{
FEColorMatrix* colorMatrix = static_cast<FEColorMatrix*>(effect);
if (attrName == SVGNames::typeAttr)
return colorMatrix->setType(type());
if (attrName == SVGNames::valuesAttr)
return colorMatrix->setValues(values());
ASSERT_NOT_REACHED();
return false;
}
void SVGFEColorMatrixElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::typeAttr || attrName == SVGNames::valuesAttr) {
InstanceInvalidationGuard guard(*this);
primitiveAttributeChanged(attrName);
return;
}
if (attrName == SVGNames::inAttr) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEColorMatrixElement::build(SVGFilterBuilder* filterBuilder, Filter& filter)
{
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
Vector<float> filterValues;
ColorMatrixType filterType = type();
if (!hasAttribute(SVGNames::valuesAttr)) {
switch (filterType) {
case FECOLORMATRIX_TYPE_MATRIX:
for (size_t i = 0; i < 20; i++)
filterValues.append((i % 6) ? 0 : 1);
break;
case FECOLORMATRIX_TYPE_HUEROTATE:
filterValues.append(0);
break;
case FECOLORMATRIX_TYPE_SATURATE:
filterValues.append(1);
break;
default:
break;
}
} else {
filterValues = values();
unsigned size = filterValues.size();
if ((filterType == FECOLORMATRIX_TYPE_MATRIX && size != 20)
|| (filterType == FECOLORMATRIX_TYPE_HUEROTATE && size != 1)
|| (filterType == FECOLORMATRIX_TYPE_SATURATE && size != 1))
return nullptr;
}
auto effect = FEColorMatrix::create(filter, filterType, filterValues);
effect->inputEffects().append(input1);
return WTFMove(effect);
}
}