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C++ PaintLayer::previousScrollOffsetAccumulationForPainting方法代码示例

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


在下文中一共展示了PaintLayer::previousScrollOffsetAccumulationForPainting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: shouldRepaintSubsequence

static bool shouldRepaintSubsequence(PaintLayer& paintLayer, const PaintLayerPaintingInfo& paintingInfo, ShouldRespectOverflowClip respectOverflowClip, const LayoutSize& subpixelAccumulation)
{
    bool needsRepaint = false;

    // Repaint subsequence if the layer is marked for needing repaint.
    if (paintLayer.needsRepaint())
        needsRepaint = true;

    // Repaint if layer's clip changes.
    ClipRects& clipRects = paintLayer.clipper().paintingClipRects(paintingInfo.rootLayer, respectOverflowClip, subpixelAccumulation);
    ClipRects* previousClipRects = paintLayer.previousPaintingClipRects();
    if (!needsRepaint && &clipRects != previousClipRects && (!previousClipRects || clipRects != *previousClipRects))
        needsRepaint = true;
    paintLayer.setPreviousPaintingClipRects(clipRects);

    // Repaint if previously the layer might be clipped by paintDirtyRect and paintDirtyRect changes.
    if (!needsRepaint && paintLayer.previousPaintResult() == PaintLayerPainter::MayBeClippedByPaintDirtyRect && paintLayer.previousPaintDirtyRect() != paintingInfo.paintDirtyRect)
        needsRepaint = true;
    paintLayer.setPreviousPaintDirtyRect(paintingInfo.paintDirtyRect);

    // Repaint if scroll offset accumulation changes.
    if (!needsRepaint && paintingInfo.scrollOffsetAccumulation != paintLayer.previousScrollOffsetAccumulationForPainting())
        needsRepaint = true;
    paintLayer.setPreviousScrollOffsetAccumulationForPainting(paintingInfo.scrollOffsetAccumulation);

    return needsRepaint;
}
开发者ID:mtucker6784,项目名称:chromium,代码行数:27,代码来源:PaintLayerPainter.cpp


注:本文中的PaintLayer::previousScrollOffsetAccumulationForPainting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。