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Bug 385222: Topmost overlapping div does not scroll within the bounded area of the underlying div. r+sr=roc.

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sharparrow1@yahoo.com 2007-07-02 13:56:30 -07:00
parent e3f1f21318
commit 671a4a7ff6
1 changed files with 15 additions and 0 deletions
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15
view/src/nsViewManager.cpp
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@ -724,7 +724,22 @@ nsViewManager::UpdateViewAfterScroll(nsView *aView, const nsRegion& aUpdateRegio
{
NS_ASSERTION(RootViewManager()->mScrollCnt > 0,
"Someone forgot to call WillBitBlit()");
// Look at the view's clipped rect. It may be that part of the view is clipped out
// in which case we don't need to worry about invalidating the clipped-out part.
nsRect damageRect = aView->GetDimensions();
if (damageRect.IsEmpty()) {
return;
}
nsPoint offset = ComputeViewOffset(aView);
damageRect.MoveBy(offset);
// if this is a floating view, it isn't covered by any widgets other than
// its children, which are handled by the widget scroller.
if (aView->GetFloating()) {
return;
}
UpdateWidgetArea(RootViewManager()->GetRootView(), nsRegion(damageRect), aView);
if (!aUpdateRegion.IsEmpty()) {
// XXX We should update the region, not the bounds rect, but that requires
// a little more work. Fix this when we reshuffle this code.