LinearGradientAttributes SVGLinearGradientElement::collectGradientProperties() const
{
LinearGradientAttributes attributes;
HashSet<const SVGGradientElement*> processedGradients;
bool isLinear = true;
const SVGGradientElement* current = this;
while (current) {
if (!attributes.hasSpreadMethod() && current->hasAttribute(SVGNames::spreadMethodAttr))
attributes.setSpreadMethod((GradientSpreadMethod) current->spreadMethod());
if (!attributes.hasBoundingBoxMode() && current->hasAttribute(SVGNames::gradientUnitsAttr))
attributes.setBoundingBoxMode(current->gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
if (!attributes.hasGradientTransform() && current->hasAttribute(SVGNames::gradientTransformAttr))
attributes.setGradientTransform(current->gradientTransform()->consolidate().matrix());
if (!attributes.hasStops()) {
const Vector<SVGGradientStop>& stops(current->buildStops());
if (!stops.isEmpty())
attributes.setStops(stops);
}
if (isLinear) {
const SVGLinearGradientElement* linear = static_cast<const SVGLinearGradientElement*>(current);
if (!attributes.hasX1() && current->hasAttribute(SVGNames::x1Attr))
attributes.setX1(linear->x1());
if (!attributes.hasY1() && current->hasAttribute(SVGNames::y1Attr))
attributes.setY1(linear->y1());
if (!attributes.hasX2() && current->hasAttribute(SVGNames::x2Attr))
attributes.setX2(linear->x2());
if (!attributes.hasY2() && current->hasAttribute(SVGNames::y2Attr))
attributes.setY2(linear->y2());
}
processedGradients.add(current);
// Respect xlink:href, take attributes from referenced element
Node* refNode = ownerDocument()->getElementById(SVGURIReference::getTarget(current->href()));
if (refNode && (refNode->hasTagName(SVGNames::linearGradientTag) || refNode->hasTagName(SVGNames::radialGradientTag))) {
current = static_cast<const SVGGradientElement*>(const_cast<const Node*>(refNode));
// Cycle detection
if (processedGradients.contains(current))
return LinearGradientAttributes();
isLinear = current->gradientType() == LinearGradientPaintServer;
} else
current = 0;
}
return attributes;
}
bool RenderSVGResourceLinearGradient::collectGradientAttributes(SVGGradientElement* gradientElement)
{
m_attributes = LinearGradientAttributes();
return static_cast<SVGLinearGradientElement*>(gradientElement)->collectGradientAttributes(m_attributes);
}
bool LayoutSVGResourceLinearGradient::collectGradientAttributes(SVGGradientElement* gradientElement)
{
m_attributesWrapper->set(LinearGradientAttributes());
return toSVGLinearGradientElement(gradientElement)->collectGradientAttributes(mutableAttributes());
}
