SVGFEDropShadowElement.cpp [plain text]
#include "config.h"
#include "SVGFEDropShadowElement.h"
#include "RenderStyle.h"
#include "SVGFilterBuilder.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include "SVGRenderStyle.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEDropShadowElement);
inline SVGFEDropShadowElement::SVGFEDropShadowElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feDropShadowTag));
registerAttributes();
}
Ref<SVGFEDropShadowElement> SVGFEDropShadowElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEDropShadowElement(tagName, document));
}
const AtomicString& SVGFEDropShadowElement::stdDeviationXIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGStdDeviationX", AtomicString::ConstructFromLiteral);
return s_identifier;
}
const AtomicString& SVGFEDropShadowElement::stdDeviationYIdentifier()
{
static NeverDestroyed<AtomicString> s_identifier("SVGStdDeviationY", AtomicString::ConstructFromLiteral);
return s_identifier;
}
void SVGFEDropShadowElement::setStdDeviation(float x, float y)
{
m_stdDeviationX.setValue(x);
m_stdDeviationY.setValue(y);
invalidate();
}
void SVGFEDropShadowElement::registerAttributes()
{
auto& registry = attributeRegistry();
if (!registry.isEmpty())
return;
registry.registerAttribute<SVGNames::inAttr, &SVGFEDropShadowElement::m_in1>();
registry.registerAttribute<SVGNames::dxAttr, &SVGFEDropShadowElement::m_dx>();
registry.registerAttribute<SVGNames::dyAttr, &SVGFEDropShadowElement::m_dy>();
registry.registerAttribute<SVGNames::stdDeviationAttr,
&SVGFEDropShadowElement::stdDeviationXIdentifier, &SVGFEDropShadowElement::m_stdDeviationX,
&SVGFEDropShadowElement::stdDeviationYIdentifier, &SVGFEDropShadowElement::m_stdDeviationY>();
}
void SVGFEDropShadowElement::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::dxAttr) {
m_dx.setValue(value.toFloat());
return;
}
if (name == SVGNames::dyAttr) {
m_dy.setValue(value.toFloat());
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
}
void SVGFEDropShadowElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
RefPtr<FilterEffect> SVGFEDropShadowElement::build(SVGFilterBuilder* filterBuilder, Filter& filter)
{
RenderObject* renderer = this->renderer();
if (!renderer)
return nullptr;
if (stdDeviationX() < 0 || stdDeviationY() < 0)
return nullptr;
const SVGRenderStyle& svgStyle = renderer->style().svgStyle();
Color color = renderer->style().colorByApplyingColorFilter(svgStyle.floodColor());
float opacity = svgStyle.floodOpacity();
auto input1 = filterBuilder->getEffectById(in1());
if (!input1)
return nullptr;
auto effect = FEDropShadow::create(filter, stdDeviationX(), stdDeviationY(), dx(), dy(), color, opacity);
effect->inputEffects().append(input1);
return WTFMove(effect);
}
}