SVGFilterElement.cpp [plain text]
#include "config.h"
#include "SVGFilterElement.h"
#include "RenderSVGResourceFilter.h"
#include "SVGFilterBuilder.h"
#include "SVGFilterPrimitiveStandardAttributes.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFilterElement);
inline SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document)
, SVGURIReference(this)
{
ASSERT(hasTagName(SVGNames::filterTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::filterUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_filterUnits>();
PropertyRegistry::registerProperty<SVGNames::primitiveUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGFilterElement::m_primitiveUnits>();
PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGFilterElement::m_x>();
PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGFilterElement::m_y>();
PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGFilterElement::m_width>();
PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGFilterElement::m_height>();
});
}
Ref<SVGFilterElement> SVGFilterElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFilterElement(tagName, document));
}
void SVGFilterElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
SVGParsingError parseError = NoError;
if (name == SVGNames::filterUnitsAttr) {
SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
if (propertyValue > 0)
m_filterUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue);
} else if (name == SVGNames::primitiveUnitsAttr) {
SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
if (propertyValue > 0)
m_primitiveUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue);
} else if (name == SVGNames::xAttr)
m_x->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
else if (name == SVGNames::yAttr)
m_y->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
else if (name == SVGNames::widthAttr)
m_width->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, value, parseError));
else if (name == SVGNames::heightAttr)
m_height->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, value, parseError));
reportAttributeParsingError(parseError, name, value);
SVGElement::parseAttribute(name, value);
SVGURIReference::parseAttribute(name, value);
}
void SVGFilterElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isAnimatedLengthAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
invalidateSVGPresentationAttributeStyle();
return;
}
if (PropertyRegistry::isKnownAttribute(attrName) || SVGURIReference::isKnownAttribute(attrName)) {
if (auto* renderer = this->renderer())
renderer->setNeedsLayout();
return;
}
SVGElement::svgAttributeChanged(attrName);
}
void SVGFilterElement::childrenChanged(const ChildChange& change)
{
SVGElement::childrenChanged(change);
if (change.source == ChildChangeSource::Parser)
return;
if (RenderObject* object = renderer())
object->setNeedsLayout();
}
RenderPtr<RenderElement> SVGFilterElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGResourceFilter>(*this, WTFMove(style));
}
bool SVGFilterElement::childShouldCreateRenderer(const Node& child) const
{
if (!child.isSVGElement())
return false;
const SVGElement& svgElement = downcast<SVGElement>(child);
static NeverDestroyed<HashSet<QualifiedName>> allowedChildElementTags;
if (allowedChildElementTags.get().isEmpty()) {
allowedChildElementTags.get().add(SVGNames::feBlendTag);
allowedChildElementTags.get().add(SVGNames::feColorMatrixTag);
allowedChildElementTags.get().add(SVGNames::feComponentTransferTag);
allowedChildElementTags.get().add(SVGNames::feCompositeTag);
allowedChildElementTags.get().add(SVGNames::feConvolveMatrixTag);
allowedChildElementTags.get().add(SVGNames::feDiffuseLightingTag);
allowedChildElementTags.get().add(SVGNames::feDisplacementMapTag);
allowedChildElementTags.get().add(SVGNames::feDistantLightTag);
allowedChildElementTags.get().add(SVGNames::feDropShadowTag);
allowedChildElementTags.get().add(SVGNames::feFloodTag);
allowedChildElementTags.get().add(SVGNames::feFuncATag);
allowedChildElementTags.get().add(SVGNames::feFuncBTag);
allowedChildElementTags.get().add(SVGNames::feFuncGTag);
allowedChildElementTags.get().add(SVGNames::feFuncRTag);
allowedChildElementTags.get().add(SVGNames::feGaussianBlurTag);
allowedChildElementTags.get().add(SVGNames::feImageTag);
allowedChildElementTags.get().add(SVGNames::feMergeTag);
allowedChildElementTags.get().add(SVGNames::feMergeNodeTag);
allowedChildElementTags.get().add(SVGNames::feMorphologyTag);
allowedChildElementTags.get().add(SVGNames::feOffsetTag);
allowedChildElementTags.get().add(SVGNames::fePointLightTag);
allowedChildElementTags.get().add(SVGNames::feSpecularLightingTag);
allowedChildElementTags.get().add(SVGNames::feSpotLightTag);
allowedChildElementTags.get().add(SVGNames::feTileTag);
allowedChildElementTags.get().add(SVGNames::feTurbulenceTag);
}
return allowedChildElementTags.get().contains<SVGAttributeHashTranslator>(svgElement.tagQName());
}
}