本文整理汇总了C++中SVGUseElement::cachedDocumentIsStillLoading方法的典型用法代码示例。如果您正苦于以下问题：C++ SVGUseElement::cachedDocumentIsStillLoading方法的具体用法？C++ SVGUseElement::cachedDocumentIsStillLoading怎么用？C++ SVGUseElement::cachedDocumentIsStillLoading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::cachedDocumentIsStillLoading方法的1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: expandUseElementsInShadowTree
void SVGUseElement::expandUseElementsInShadowTree(Node* element)
{
// Why expand the <use> elements in the shadow tree here, and not just
// do this directly in buildShadowTree, if we encounter a <use> element?
//
// Short answer: Because we may miss to expand some elements. Ie. if a <symbol>
// contains <use> tags, we'd miss them. So once we're done with settin' up the
// actual shadow tree (after the special case modification for svg/symbol) we have
// to walk it completely and expand all <use> elements.
if (element->hasTagName(SVGNames::useTag)) {
SVGUseElement* use = toSVGUseElement(element);
ASSERT(!use->cachedDocumentIsStillLoading());
ASSERT(referencedDocument());
Element* targetElement = SVGURIReference::targetElementFromIRIString(use->href(), *referencedDocument());
SVGElement* target = 0;
if (targetElement && targetElement->isSVGElement())
target = toSVGElement(targetElement);
// Don't ASSERT(target) here, it may be "pending", too.
// Setup sub-shadow tree root node
RefPtr<SVGGElement> cloneParent = SVGGElement::create(SVGNames::gTag, *referencedDocument());
use->cloneChildNodes(cloneParent.get());
// Spec: In the generated content, the 'use' will be replaced by 'g', where all attributes from the
// 'use' element except for x, y, width, height and xlink:href are transferred to the generated 'g' element.
transferUseAttributesToReplacedElement(use, cloneParent.get());
if (target && !isDisallowedElement(*target)) {
RefPtr<Element> newChild = target->cloneElementWithChildren();
ASSERT(newChild->isSVGElement());
cloneParent->appendChild(newChild.release());
}
// We don't walk the target tree element-by-element, and clone each element,
// but instead use cloneElementWithChildren(). This is an optimization for the common
// case where <use> doesn't contain disallowed elements (ie. <foreignObject>).
// Though if there are disallowed elements in the subtree, we have to remove them.
// For instance: <use> on <g> containing <foreignObject> (indirect case).
if (subtreeContainsDisallowedElement(*cloneParent))
removeDisallowedElementsFromSubtree(*cloneParent);
RefPtr<Node> replacingElement(cloneParent.get());
// Replace <use> with referenced content.
ASSERT(use->parentNode());
use->parentNode()->replaceChild(cloneParent.release(), use);
// Expand the siblings because the *element* is replaced and we will
// lose the sibling chain when we are back from recursion.
element = replacingElement.get();
for (RefPtr<Node> sibling = element->nextSibling(); sibling; sibling = sibling->nextSibling())
expandUseElementsInShadowTree(sibling.get());
}
for (RefPtr<Node> child = element->firstChild(); child; child = child->nextSibling())
expandUseElementsInShadowTree(child.get());
}