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import from mozilla: Bug 1350925 part 1 - Reset the scrolled frame's ReflowOutput overflow areas before re-using it for another child reflow. r=dholbert a=gchang (8c70d11ecd1)

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roytam1 2025-02-13 21:02:15 +08:00
commit 7f4a92ec55
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2
layout/generic/nsGfxScrollFrame.cpp
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@ -365,6 +365,7 @@ nsHTMLScrollFrame::TryLayout(ScrollReflowInput* aState,
nsLayoutUtils::MarkIntrinsicISizesDirtyIfDependentOnBSize(
mHelper.mScrolledFrame);
}
aKidMetrics->mOverflowAreas.Clear();
ReflowScrolledFrame(aState, aAssumeHScroll, aAssumeVScroll, aKidMetrics,
false);
}
@ -719,6 +720,7 @@ nsHTMLScrollFrame::ReflowContents(ScrollReflowInput* aState,
insideBorderSize);
if (nsRect(nsPoint(0, 0), insideBorderSize).Contains(scrolledRect)) {
// Let's pretend we had no scrollbars coming in here
kidDesiredSize.mOverflowAreas.Clear();
ReflowScrolledFrame(aState, false, false, &kidDesiredSize, false);
}
}