C++ (Cpp) renderBoxRegionInfo示例

示例#1

文件： RenderRegion.cpp 项目： xtturing/webkit

void RenderRegion::ensureOverflowForBox(const RenderBox* box, RefPtr<RenderOverflow>& overflow, bool forceCreation)
{
    RenderFlowThread* flowThread = this->flowThread();
    ASSERT(flowThread);
    
    RenderBoxRegionInfo* boxInfo = renderBoxRegionInfo(box);
    if (!boxInfo && !forceCreation)
        return;

    if (boxInfo && boxInfo->overflow()) {
        overflow = boxInfo->overflow();
        return;
    }
    
    LayoutRect borderBox = box->borderBoxRectInRegion(this);
    LayoutRect clientBox;
    ASSERT(flowThread->objectShouldPaintInFlowRegion(box, this));

    if (!borderBox.isEmpty()) {
        borderBox = rectFlowPortionForBox(box, borderBox);
        
        clientBox = box->clientBoxRectInRegion(this);
        clientBox = rectFlowPortionForBox(box, clientBox);
        
        flowThread->flipForWritingModeLocalCoordinates(borderBox);
        flowThread->flipForWritingModeLocalCoordinates(clientBox);
    }

    if (boxInfo) {
        boxInfo->createOverflow(clientBox, borderBox);
        overflow = boxInfo->overflow();
    } else
        overflow = adoptRef(new RenderOverflow(clientBox, borderBox));
}

示例#2

文件： RenderNamedFlowFragment.cpp 项目： Comcast/WebKitForWayland

LayoutRect RenderNamedFlowFragment::visualOverflowRect() const
{
    if (isValid()) {
        RenderBoxRegionInfo* boxInfo = renderBoxRegionInfo(flowThread());
        if (boxInfo && boxInfo->overflow())
            return boxInfo->overflow()->visualOverflowRect();
    }
    
    return RenderRegion::visualOverflowRect();
}