SVGFEGaussianBlurElement.cpp [plain text]
#include "config.h"
#include "SVGFEGaussianBlurElement.h"
#include "FilterEffect.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEGaussianBlurElement);
inline SVGFEGaussianBlurElement::SVGFEGaussianBlurElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feGaussianBlurTag));
registerAttributes();
}
Ref<SVGFEGaussianBlurElement> SVGFEGaussianBlurElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEGaussianBlurElement(tagName, document));
}
const AtomicString& SVGFEGaussianBlurElement::stdDeviationXIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGStdDeviationX", AtomicString::ConstructFromLiteral);
return s_identifier;
}
const AtomicString& SVGFEGaussianBlurElement::stdDeviationYIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGStdDeviationY", AtomicString::ConstructFromLiteral);
return s_identifier;
}
void SVGFEGaussianBlurElement::setStdDeviation(float x, float y)
{
m_stdDeviationX.setValue(x);
m_stdDeviationY.setValue(y);
invalidate();
}
void SVGFEGaussianBlurElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEGaussianBlurElement::m_in1>();
registry.registerAttribute<SVGNames::stdDeviationAttr,
&SVGFEGaussianBlurElement::stdDeviationXIdentifier, &SVGFEGaussianBlurElement::m_stdDeviationX,
&SVGFEGaussianBlurElement::stdDeviationYIdentifier, &SVGFEGaussianBlurElement::m_stdDeviationY>();
registry.registerAttribute<SVGNames::edgeModeAttr, EdgeModeType, &SVGFEGaussianBlurElement::m_edgeMode>();
}
void SVGFEGaussianBlurElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::stdDeviationAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y)) {
m_stdDeviationX.setValue(x);
m_stdDeviationY.setValue(y);
}
return;
}
if (name == SVGNames::inAttr) {
m_in1.setValue(value);
return;
}
if (name == SVGNames::edgeModeAttr) {
auto propertyValue = SVGPropertyTraits<EdgeModeType>::fromString(value);
if (propertyValue > 0)
m_edgeMode.setValue(propertyValue);
else
document().accessSVGExtensions().reportWarning("feGaussianBlur: problem parsing edgeMode=\"" + value + "\". Filtered element will not be displayed.");
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
void SVGFEGaussianBlurElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEGaussianBlurElement::build(SVGFilterBuilder* filterBuilder, Filter& filter)
{
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
if (stdDeviationX() < 0 || stdDeviationY() < 0)
return nullptr;
auto effect = FEGaussianBlur::create(filter, stdDeviationX(), stdDeviationY(), edgeMode());
effect->inputEffects().append(input1);
return WTFMove(effect);
}
}