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C++ HTMLPlugInImageElement::setNeedsCheckForSizeChange方法代码示例

本文整理汇总了C++中HTMLPlugInImageElement::setNeedsCheckForSizeChange方法的典型用法代码示例。如果您正苦于以下问题:C++ HTMLPlugInImageElement::setNeedsCheckForSizeChange方法的具体用法?C++ HTMLPlugInImageElement::setNeedsCheckForSizeChange怎么用?C++ HTMLPlugInImageElement::setNeedsCheckForSizeChange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HTMLPlugInImageElement的用法示例。


在下文中一共展示了HTMLPlugInImageElement::setNeedsCheckForSizeChange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: layout

void RenderEmbeddedObject::layout()
{
    StackStats::LayoutCheckPoint layoutCheckPoint;
    ASSERT(needsLayout());

    LayoutSize oldSize = contentBoxRect().size();

    updateLogicalWidth();
    updateLogicalHeight();

    RenderPart::layout();

    m_overflow.clear();
    addVisualEffectOverflow();

    updateLayerTransform();

    bool wasMissingWidget = false;
    if (!widget() && frameView() && canHaveWidget()) {
        wasMissingWidget = true;
        frameView()->addWidgetToUpdate(this);
    }

    setNeedsLayout(false);

    LayoutSize newSize = contentBoxRect().size();

    if (!wasMissingWidget && newSize.width() >= oldSize.width() && newSize.height() >= oldSize.height()) {
        Element* element = toElement(node());
        if (element && element->isPluginElement() && toHTMLPlugInElement(element)->isPlugInImageElement()) {
            HTMLPlugInImageElement* plugInImageElement = toHTMLPlugInImageElement(element);
            if (plugInImageElement->displayState() > HTMLPlugInElement::DisplayingSnapshot && plugInImageElement->snapshotDecision() == HTMLPlugInImageElement::MaySnapshotWhenResized && document()->view()) {
                plugInImageElement->setNeedsCheckForSizeChange();
                document()->view()->addWidgetToUpdate(this);
            }
        }
    }

    if (!canHaveChildren())
        return;

    // This code copied from RenderMedia::layout().
    RenderObject* child = m_children.firstChild();

    if (!child)
        return;

    RenderBox* childBox = toRenderBox(child);

    if (!childBox)
        return;

    if (newSize == oldSize && !childBox->needsLayout())
        return;
    
    // When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
    // instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
    // and this method will be called many times per second during playback, use a LayoutStateMaintainer:
    LayoutStateMaintainer statePusher(view(), this, locationOffset(), hasTransform() || hasReflection() || style()->isFlippedBlocksWritingMode());
    
    childBox->setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
    childBox->style()->setHeight(Length(newSize.height(), Fixed));
    childBox->style()->setWidth(Length(newSize.width(), Fixed));
    childBox->setNeedsLayout(true, MarkOnlyThis);
    childBox->layout();
    setChildNeedsLayout(false);
    
    statePusher.pop();
}
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注:本文中的HTMLPlugInImageElement::setNeedsCheckForSizeChange方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。