LinearGradientAttributes SVGLinearGradientElement::collectGradientProperties()
{
LinearGradientAttributes attributes;
HashSet<SVGGradientElement*> processedGradients;
bool isLinear = true;
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<Gradient::ColorStop>& stops(current->buildStops());
if (!stops.isEmpty())
attributes.setStops(stops);
}
if (isLinear) {
SVGLinearGradientElement* linear = static_cast<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<SVGGradientElement*>(refNode);
// Cycle detection
if (processedGradients.contains(current))
return LinearGradientAttributes();
isLinear = current->hasTagName(SVGNames::linearGradientTag);
} else
current = 0;
}
return attributes;
}
JSValue* JSSVGLinearGradientElement::getValueProperty(ExecState* exec, int token) const
{
switch (token) {
case X1AttrNum: {
SVGLinearGradientElement* imp = static_cast<SVGLinearGradientElement*>(impl());
RefPtr<SVGAnimatedLength> obj = imp->x1Animated();
return toJS(exec, obj.get(), imp);
}
case Y1AttrNum: {
SVGLinearGradientElement* imp = static_cast<SVGLinearGradientElement*>(impl());
RefPtr<SVGAnimatedLength> obj = imp->y1Animated();
return toJS(exec, obj.get(), imp);
}
case X2AttrNum: {
SVGLinearGradientElement* imp = static_cast<SVGLinearGradientElement*>(impl());
RefPtr<SVGAnimatedLength> obj = imp->x2Animated();
return toJS(exec, obj.get(), imp);
}
case Y2AttrNum: {
SVGLinearGradientElement* imp = static_cast<SVGLinearGradientElement*>(impl());
RefPtr<SVGAnimatedLength> obj = imp->y2Animated();
return toJS(exec, obj.get(), imp);
}
}
return 0;
}
void RenderSVGResourceLinearGradient::buildGradient(GradientData* gradientData, SVGGradientElement* gradientElement) const
{
SVGLinearGradientElement* linearGradientElement = static_cast<SVGLinearGradientElement*>(gradientElement);
// Determine gradient start/end points
FloatPoint startPoint;
FloatPoint endPoint;
linearGradientElement->calculateStartEndPoints(m_attributes, startPoint, endPoint);
gradientData->gradient = Gradient::create(startPoint, endPoint);
gradientData->gradient->setSpreadMethod(platformSpreadMethodFromSVGType(m_attributes.spreadMethod()));
// Add stops
addStops(gradientData, m_attributes.stops());
}
static void setGradientAttributes(SVGGradientElement* element, LinearGradientAttributes& attributes, bool isLinear = true)
{
if (!attributes.hasSpreadMethod() && element->spreadMethod()->isSpecified())
attributes.setSpreadMethod(element->spreadMethod()->currentValue()->enumValue());
if (!attributes.hasGradientUnits() && element->gradientUnits()->isSpecified())
attributes.setGradientUnits(element->gradientUnits()->currentValue()->enumValue());
if (!attributes.hasGradientTransform() && element->gradientTransform()->isSpecified()) {
AffineTransform transform;
element->gradientTransform()->currentValue()->concatenate(transform);
attributes.setGradientTransform(transform);
}
if (!attributes.hasStops()) {
const Vector<Gradient::ColorStop>& stops(element->buildStops());
if (!stops.isEmpty())
attributes.setStops(stops);
}
if (isLinear) {
SVGLinearGradientElement* linear = toSVGLinearGradientElement(element);
if (!attributes.hasX1() && linear->x1()->isSpecified())
attributes.setX1(linear->x1()->currentValue());
if (!attributes.hasY1() && linear->y1()->isSpecified())
attributes.setY1(linear->y1()->currentValue());
if (!attributes.hasX2() && linear->x2()->isSpecified())
attributes.setX2(linear->x2()->currentValue());
if (!attributes.hasY2() && linear->y2()->isSpecified())
attributes.setY2(linear->y2()->currentValue());
}
}
static v8::Handle<v8::Value> y2AttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
SVGLinearGradientElement* imp = V8SVGLinearGradientElement::toNative(info.Holder());
return toV8Fast(imp->y2Animated(), info, imp);
}
void writeSVGResourceContainer(TextStream& ts, const RenderObject& object, int indent)
{
writeStandardPrefix(ts, object, indent);
Element* element = toElement(object.node());
const AtomicString& id = element->getIdAttribute();
writeNameAndQuotedValue(ts, "id", id);
RenderSVGResourceContainer* resource = const_cast<RenderObject&>(object).toRenderSVGResourceContainer();
ASSERT(resource);
if (resource->resourceType() == MaskerResourceType) {
RenderSVGResourceMasker* masker = static_cast<RenderSVGResourceMasker*>(resource);
writeNameValuePair(ts, "maskUnits", masker->maskUnits());
writeNameValuePair(ts, "maskContentUnits", masker->maskContentUnits());
ts << "\n";
#if ENABLE(FILTERS)
} else if (resource->resourceType() == FilterResourceType) {
RenderSVGResourceFilter* filter = static_cast<RenderSVGResourceFilter*>(resource);
writeNameValuePair(ts, "filterUnits", filter->filterUnits());
writeNameValuePair(ts, "primitiveUnits", filter->primitiveUnits());
ts << "\n";
// Creating a placeholder filter which is passed to the builder.
FloatRect dummyRect;
RefPtr<SVGFilter> dummyFilter = SVGFilter::create(AffineTransform(), dummyRect, dummyRect, dummyRect, true);
if (RefPtr<SVGFilterBuilder> builder = filter->buildPrimitives(dummyFilter.get())) {
if (FilterEffect* lastEffect = builder->lastEffect())
lastEffect->externalRepresentation(ts, indent + 1);
}
#endif
} else if (resource->resourceType() == ClipperResourceType) {
RenderSVGResourceClipper* clipper = static_cast<RenderSVGResourceClipper*>(resource);
writeNameValuePair(ts, "clipPathUnits", clipper->clipPathUnits());
ts << "\n";
} else if (resource->resourceType() == MarkerResourceType) {
RenderSVGResourceMarker* marker = static_cast<RenderSVGResourceMarker*>(resource);
writeNameValuePair(ts, "markerUnits", marker->markerUnits());
ts << " [ref at " << marker->referencePoint() << "]";
ts << " [angle=";
if (marker->angle() == -1)
ts << "auto" << "]\n";
else
ts << marker->angle() << "]\n";
} else if (resource->resourceType() == PatternResourceType) {
RenderSVGResourcePattern* pattern = static_cast<RenderSVGResourcePattern*>(resource);
// Dump final results that are used for rendering. No use in asking SVGPatternElement for its patternUnits(), as it may
// link to other patterns using xlink:href, we need to build the full inheritance chain, aka. collectPatternProperties()
PatternAttributes attributes;
static_cast<SVGPatternElement*>(pattern->node())->collectPatternAttributes(attributes);
writeNameValuePair(ts, "patternUnits", attributes.patternUnits());
writeNameValuePair(ts, "patternContentUnits", attributes.patternContentUnits());
AffineTransform transform = attributes.patternTransform();
if (!transform.isIdentity())
ts << " [patternTransform=" << transform << "]";
ts << "\n";
} else if (resource->resourceType() == LinearGradientResourceType) {
RenderSVGResourceLinearGradient* gradient = static_cast<RenderSVGResourceLinearGradient*>(resource);
// Dump final results that are used for rendering. No use in asking SVGGradientElement for its gradientUnits(), as it may
// link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
SVGLinearGradientElement* linearGradientElement = static_cast<SVGLinearGradientElement*>(gradient->node());
LinearGradientAttributes attributes;
linearGradientElement->collectGradientAttributes(attributes);
writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
ts << " [start=" << gradient->startPoint(attributes) << "] [end=" << gradient->endPoint(attributes) << "]\n";
} else if (resource->resourceType() == RadialGradientResourceType) {
RenderSVGResourceRadialGradient* gradient = static_cast<RenderSVGResourceRadialGradient*>(resource);
// Dump final results that are used for rendering. No use in asking SVGGradientElement for its gradientUnits(), as it may
// link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
SVGRadialGradientElement* radialGradientElement = static_cast<SVGRadialGradientElement*>(gradient->node());
RadialGradientAttributes attributes;
radialGradientElement->collectGradientAttributes(attributes);
writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
FloatPoint focalPoint = gradient->focalPoint(attributes);
FloatPoint centerPoint = gradient->centerPoint(attributes);
float radius = gradient->radius(attributes);
float focalRadius = gradient->focalRadius(attributes);
ts << " [center=" << centerPoint << "] [focal=" << focalPoint << "] [radius=" << radius << "] [focalRadius=" << focalRadius << "]\n";
} else
ts << "\n";
writeChildren(ts, object, indent);
}