SVGFilterElement.cpp [plain text]
#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFilterElement.h"
#include "Attr.h"
#include "NodeRenderingContext.h"
#include "RenderSVGResourceFilter.h"
#include "SVGElementInstance.h"
#include "SVGFilterBuilder.h"
#include "SVGFilterPrimitiveStandardAttributes.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
namespace WebCore {
DEFINE_ANIMATED_ENUMERATION(SVGFilterElement, SVGNames::filterUnitsAttr, FilterUnits, filterUnits, SVGUnitTypes::SVGUnitType)
DEFINE_ANIMATED_ENUMERATION(SVGFilterElement, SVGNames::primitiveUnitsAttr, PrimitiveUnits, primitiveUnits, SVGUnitTypes::SVGUnitType)
DEFINE_ANIMATED_LENGTH(SVGFilterElement, SVGNames::xAttr, X, x)
DEFINE_ANIMATED_LENGTH(SVGFilterElement, SVGNames::yAttr, Y, y)
DEFINE_ANIMATED_LENGTH(SVGFilterElement, SVGNames::widthAttr, Width, width)
DEFINE_ANIMATED_LENGTH(SVGFilterElement, SVGNames::heightAttr, Height, height)
DEFINE_ANIMATED_INTEGER_MULTIPLE_WRAPPERS(SVGFilterElement, SVGNames::filterResAttr, filterResXIdentifier(), FilterResX, filterResX)
DEFINE_ANIMATED_INTEGER_MULTIPLE_WRAPPERS(SVGFilterElement, SVGNames::filterResAttr, filterResYIdentifier(), FilterResY, filterResY)
DEFINE_ANIMATED_STRING(SVGFilterElement, XLinkNames::hrefAttr, Href, href)
DEFINE_ANIMATED_BOOLEAN(SVGFilterElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFilterElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(filterUnits)
REGISTER_LOCAL_ANIMATED_PROPERTY(primitiveUnits)
REGISTER_LOCAL_ANIMATED_PROPERTY(x)
REGISTER_LOCAL_ANIMATED_PROPERTY(y)
REGISTER_LOCAL_ANIMATED_PROPERTY(width)
REGISTER_LOCAL_ANIMATED_PROPERTY(height)
REGISTER_LOCAL_ANIMATED_PROPERTY(filterResX)
REGISTER_LOCAL_ANIMATED_PROPERTY(filterResY)
REGISTER_LOCAL_ANIMATED_PROPERTY(href)
REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGFilterElement::SVGFilterElement(const QualifiedName& tagName, Document* document)
: SVGStyledElement(tagName, document)
, m_filterUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
, m_primitiveUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
, m_x(LengthModeWidth, "-10%")
, m_y(LengthModeHeight, "-10%")
, m_width(LengthModeWidth, "120%")
, m_height(LengthModeHeight, "120%")
{
ASSERT(hasTagName(SVGNames::filterTag));
registerAnimatedPropertiesForSVGFilterElement();
}
PassRefPtr<SVGFilterElement> SVGFilterElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGFilterElement(tagName, document));
}
const AtomicString& SVGFilterElement::filterResXIdentifier()
{
DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGFilterResX"));
return s_identifier;
}
const AtomicString& SVGFilterElement::filterResYIdentifier()
{
DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGFilterResY"));
return s_identifier;
}
void SVGFilterElement::setFilterRes(unsigned filterResX, unsigned filterResY)
{
setFilterResXBaseValue(filterResX);
setFilterResYBaseValue(filterResY);
if (RenderObject* object = renderer())
object->setNeedsLayout(true);
}
bool SVGFilterElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
SVGURIReference::addSupportedAttributes(supportedAttributes);
SVGLangSpace::addSupportedAttributes(supportedAttributes);
SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
supportedAttributes.add(SVGNames::filterUnitsAttr);
supportedAttributes.add(SVGNames::primitiveUnitsAttr);
supportedAttributes.add(SVGNames::xAttr);
supportedAttributes.add(SVGNames::yAttr);
supportedAttributes.add(SVGNames::widthAttr);
supportedAttributes.add(SVGNames::heightAttr);
supportedAttributes.add(SVGNames::filterResAttr);
}
return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName);
}
void SVGFilterElement::parseAttribute(Attribute* attr)
{
SVGParsingError parseError = NoError;
const AtomicString& value = attr->value();
if (!isSupportedAttribute(attr->name()))
SVGStyledElement::parseAttribute(attr);
else if (attr->name() == SVGNames::filterUnitsAttr) {
SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
if (propertyValue > 0)
setFilterUnitsBaseValue(propertyValue);
} else if (attr->name() == SVGNames::primitiveUnitsAttr) {
SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
if (propertyValue > 0)
setPrimitiveUnitsBaseValue(propertyValue);
} else if (attr->name() == SVGNames::xAttr)
setXBaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
else if (attr->name() == SVGNames::yAttr)
setYBaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
else if (attr->name() == SVGNames::widthAttr)
setWidthBaseValue(SVGLength::construct(LengthModeWidth, value, parseError));
else if (attr->name() == SVGNames::heightAttr)
setHeightBaseValue(SVGLength::construct(LengthModeHeight, value, parseError));
else if (attr->name() == SVGNames::filterResAttr) {
float x, y;
if (parseNumberOptionalNumber(value, x, y)) {
setFilterResXBaseValue(x);
setFilterResYBaseValue(y);
}
} else if (SVGURIReference::parseAttribute(attr)
|| SVGLangSpace::parseAttribute(attr)
|| SVGExternalResourcesRequired::parseAttribute(attr)) {
} else
ASSERT_NOT_REACHED();
reportAttributeParsingError(parseError, attr);
}
void SVGFilterElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGStyledElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::xAttr
|| attrName == SVGNames::yAttr
|| attrName == SVGNames::widthAttr
|| attrName == SVGNames::heightAttr)
updateRelativeLengthsInformation();
if (RenderObject* object = renderer())
object->setNeedsLayout(true);
}
void SVGFilterElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
if (changedByParser)
return;
if (RenderObject* object = renderer())
object->setNeedsLayout(true);
}
RenderObject* SVGFilterElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderSVGResourceFilter(this);
}
bool SVGFilterElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
{
if (!childContext.node()->isSVGElement())
return false;
Element* element = static_cast<Element*>(childContext.node());
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, allowedChildElementTags, ());
if (allowedChildElementTags.isEmpty()) {
allowedChildElementTags.add(SVGNames::feBlendTag);
allowedChildElementTags.add(SVGNames::feColorMatrixTag);
allowedChildElementTags.add(SVGNames::feComponentTransferTag);
allowedChildElementTags.add(SVGNames::feCompositeTag);
allowedChildElementTags.add(SVGNames::feConvolveMatrixTag);
allowedChildElementTags.add(SVGNames::feDiffuseLightingTag);
allowedChildElementTags.add(SVGNames::feDisplacementMapTag);
allowedChildElementTags.add(SVGNames::feDistantLightTag);
allowedChildElementTags.add(SVGNames::feDropShadowTag);
allowedChildElementTags.add(SVGNames::feFloodTag);
allowedChildElementTags.add(SVGNames::feFuncATag);
allowedChildElementTags.add(SVGNames::feFuncBTag);
allowedChildElementTags.add(SVGNames::feFuncGTag);
allowedChildElementTags.add(SVGNames::feFuncRTag);
allowedChildElementTags.add(SVGNames::feGaussianBlurTag);
allowedChildElementTags.add(SVGNames::feImageTag);
allowedChildElementTags.add(SVGNames::feMergeTag);
allowedChildElementTags.add(SVGNames::feMergeNodeTag);
allowedChildElementTags.add(SVGNames::feMorphologyTag);
allowedChildElementTags.add(SVGNames::feOffsetTag);
allowedChildElementTags.add(SVGNames::fePointLightTag);
allowedChildElementTags.add(SVGNames::feSpecularLightingTag);
allowedChildElementTags.add(SVGNames::feSpotLightTag);
allowedChildElementTags.add(SVGNames::feTileTag);
allowedChildElementTags.add(SVGNames::feTurbulenceTag);
}
return allowedChildElementTags.contains<QualifiedName, SVGAttributeHashTranslator>(element->tagQName());
}
bool SVGFilterElement::selfHasRelativeLengths() const
{
return x().isRelative()
|| y().isRelative()
|| width().isRelative()
|| height().isRelative();
}
}
#endif