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C++ ViewGroup::BuildOrderedChildList方法代码示例

本文整理汇总了C++中ViewGroup::BuildOrderedChildList方法的典型用法代码示例。如果您正苦于以下问题:C++ ViewGroup::BuildOrderedChildList方法的具体用法?C++ ViewGroup::BuildOrderedChildList怎么用?C++ ViewGroup::BuildOrderedChildList使用的例子?那么恭喜您, 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ViewGroup的用法示例。


在下文中一共展示了ViewGroup::BuildOrderedChildList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: IsOnTop

/**
 * Returns true if view would be drawn on top of comparedWith or false otherwise.
 * view and comparedWith are siblings with the same parent. This uses the logic
 * that dispatchDraw uses to determine which View should be drawn first.
 */
Boolean GhostView::IsOnTop(
    /* [in] */ IView* view,
    /* [in] */ IView* comparedWith)
{
    AutoPtr<IViewParent> temp;
    view->GetParent((IViewParent**)&temp);
    IViewGroup* parent = IViewGroup::Probe(temp);
    ViewGroup* parentVG = (ViewGroup*)parent;

    Int32 childrenCount;
    parent->GetChildCount(&childrenCount);
    AutoPtr<IList> list = parentVG->BuildOrderedChildList();
    IArrayList* preorderedList = IArrayList::Probe(list);

    Boolean customOrder = preorderedList == NULL
        && parentVG->IsChildrenDrawingOrderEnabled();

    // This default value shouldn't be used because both view and comparedWith
    // should be in the list. If there is an error, then just return an arbitrary
    // view is on top.
    Boolean isOnTop = TRUE;
    for (Int32 i = 0; i < childrenCount; i++) {
        Int32 childIndex = customOrder ? parentVG->GetChildDrawingOrder(childrenCount, i) : i;
        AutoPtr<IView> child;
        if (NULL == preorderedList) {
            parent->GetChildAt(childIndex, (IView**)&child);
        } else {
            AutoPtr<IInterface> it;
            preorderedList->Get(childIndex, (IInterface**)&it);
            child = IView::Probe(it);
        }
        if (view == child) {
            isOnTop = FALSE;
            break;
        } else if (comparedWith == child) {
            isOnTop = TRUE;
            break;
        }
    }

    if (NULL != preorderedList) {
        preorderedList->Clear();
    }
    return isOnTop;
}
开发者ID:maerson,项目名称:CPP_Framework_Elastos5,代码行数:50,代码来源:GhostView.cpp


注:本文中的ViewGroup::BuildOrderedChildList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。