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C++ InlineFlowBox::prevFlowBox方法代码示例

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


在下文中一共展示了InlineFlowBox::prevFlowBox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: hitTestLines

bool RenderFlow::hitTestLines(NodeInfo& i, int x, int y, int tx, int ty, HitTestAction hitTestAction)
{
   (void) hitTestAction;
   /*
    if (hitTestAction != HitTestForeground) // ### port hitTest
        return false;
   */

    if (!firstLineBox())
        return false;

    // We can check the first box and last box and avoid hit testing if we don't
    // contain the point.  This is a quick short-circuit that we can take to avoid walking any lines.
    // FIXME: This check is flawed in two extremely obscure ways.
    // (1) If some line in the middle has a huge overflow, it might actually extend below the last line.
    // (2) The overflow from an inline block on a line is not reported to the line.
    if ((y >= ty + lastLineBox()->root()->bottomOverflow()) || (y < ty + firstLineBox()->root()->topOverflow()))
        return false;

    // See if our root lines contain the point.  If so, then we hit test
    // them further.  Note that boxes can easily overlap, so we can't make any assumptions
    // based off positions of our first line box or our last line box.
    for (InlineFlowBox* curr = lastLineBox(); curr; curr = curr->prevFlowBox()) {
        if (y >= ty + curr->root()->topOverflow() && y < ty + curr->root()->bottomOverflow()) {
            bool inside = curr->nodeAtPoint(i, x, y, tx, ty);
            if (inside) {
                setInnerNode(i);
                return true;
            }
        }
    }

    return false;
}
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