本文整理汇总了C++中SVGUseElement::instanceForShadowTreeElement方法的典型用法代码示例。如果您正苦于以下问题：C++ SVGUseElement::instanceForShadowTreeElement方法的具体用法？C++ SVGUseElement::instanceForShadowTreeElement怎么用？C++ SVGUseElement::instanceForShadowTreeElement使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SVGUseElement的用法示例。
在下文中一共展示了SVGUseElement::instanceForShadowTreeElement方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: eventTargetRespectingTargetRules
inline EventTarget& eventTargetRespectingTargetRules(Node& referenceNode)
{
if (referenceNode.isPseudoElement()) {
EventTarget* hostElement = toPseudoElement(referenceNode).hostElement();
ASSERT(hostElement);
return *hostElement;
}
#if ENABLE(SVG)
if (!referenceNode.isSVGElement() || !referenceNode.isInShadowTree())
return referenceNode;
// Spec: The event handling for the non-exposed tree works as if the referenced element had been textually included
// as a deeply cloned child of the 'use' element, except that events are dispatched to the SVGElementInstance objects
Node* rootNode = referenceNode.treeScope().rootNode();
Element* shadowHostElement = rootNode->isShadowRoot() ? toShadowRoot(rootNode)->hostElement() : 0;
// At this time, SVG nodes are not supported in non-<use> shadow trees.
if (!shadowHostElement || !shadowHostElement->hasTagName(SVGNames::useTag))
return referenceNode;
SVGUseElement* useElement = toSVGUseElement(shadowHostElement);
if (SVGElementInstance* instance = useElement->instanceForShadowTreeElement(&referenceNode))
return *instance;
#endif
return referenceNode;
}示例2: eventTargetRespectingSVGTargetRules
inline static EventTarget* eventTargetRespectingSVGTargetRules(Node* referenceNode)
{
ASSERT(referenceNode);
#if ENABLE(SVG)
if (!referenceNode->isSVGElement() || !referenceNode->isInShadowTree())
return referenceNode;
// Spec: The event handling for the non-exposed tree works as if the referenced element had been textually included
// as a deeply cloned child of the 'use' element, except that events are dispatched to the SVGElementInstance objects
Element* shadowHostElement = toShadowRoot(referenceNode->treeScope()->rootNode())->host();
// At this time, SVG nodes are not supported in non-<use> shadow trees.
if (!shadowHostElement || !shadowHostElement->hasTagName(SVGNames::useTag))
return referenceNode;
SVGUseElement* useElement = static_cast<SVGUseElement*>(shadowHostElement);
if (SVGElementInstance* instance = useElement->instanceForShadowTreeElement(referenceNode))
return instance;
#endif
return referenceNode;
}