本文整理汇总了C++中HTMLCanvasElement::renderingContext方法的典型用法代码示例。如果您正苦于以下问题：C++ HTMLCanvasElement::renderingContext方法的具体用法？C++ HTMLCanvasElement::renderingContext怎么用？C++ HTMLCanvasElement::renderingContext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HTMLCanvasElement的用法示例。
在下文中一共展示了HTMLCanvasElement::renderingContext方法的5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: requiresLayer
bool RenderHTMLCanvas::requiresLayer() const
{
if (RenderReplaced::requiresLayer())
return true;
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(node());
return canvas && canvas->renderingContext() && canvas->renderingContext()->isAccelerated();
}示例2: additionalCompositingReasons
CompositingReasons RenderHTMLCanvas::additionalCompositingReasons() const
{
HTMLCanvasElement* canvas = toHTMLCanvasElement(node());
if (canvas->renderingContext() && canvas->renderingContext()->isAccelerated())
return CompositingReasonCanvas;
return CompositingReasonNone;
}示例3: additionalCompositingReasons
CompositingReasons RenderHTMLCanvas::additionalCompositingReasons(CompositingTriggerFlags triggers) const
{
if (!(triggers & CanvasTrigger))
return CompositingReasonNone;
HTMLCanvasElement* canvas = toHTMLCanvasElement(node());
if (canvas->renderingContext() && canvas->renderingContext()->isAccelerated())
return CompositingReasonCanvas;
return CompositingReasonNone;
}示例4: findFramesWithUninstrumentedCanvases
void InspectorCanvasAgent::findFramesWithUninstrumentedCanvases()
{
class NodeVisitor : public WrappedNodeVisitor {
public:
NodeVisitor(Page* page, FramesWithUninstrumentedCanvases& result)
: m_page(page)
, m_framesWithUninstrumentedCanvases(result)
{
}
virtual void visitNode(Node* node) OVERRIDE
{
if (!node->hasTagName(HTMLNames::canvasTag) || !node->document() || !node->document()->frame())
return;
Frame* frame = node->document()->frame();
if (frame->page() != m_page)
return;
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(node);
if (canvas->renderingContext())
m_framesWithUninstrumentedCanvases.set(frame, true);
}
private:示例5: markChildren
void JSHTMLCanvasElement::markChildren(MarkStack& markStack)
{
Base::markChildren(markStack);
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(impl());
JSGlobalData& globalData = *Heap::heap(this)->globalData();
markDOMObjectWrapper(markStack, globalData, canvas->renderingContext());
}