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Bug 1022612. Part 18: When ComputeVisibility returns false, RecomputeVisibility should avoid painting the item. r=mattwoodrow

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extra : rebase_source : b11f832b412b75e9868306908a5e08fe9724a603
This commit is contained in:
Robert O'Callahan 2014-06-20 17:24:31 +12:00
parent f58e939842
commit d9151bef79
1 changed files with 3 additions and 1 deletions
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4
layout/base/nsDisplayList.cpp
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@ -1737,8 +1737,10 @@ nsDisplayItem::RecomputeVisibility(nsDisplayListBuilder* aBuilder,
// When we recompute visibility within layers we don't need to
// expand the visible region for content behind plugins (the plugin
// is not in the layer).
if (!ComputeVisibility(aBuilder, aVisibleRegion, nsRect()))
if (!ComputeVisibility(aBuilder, aVisibleRegion, nsRect())) {
mVisibleRect = nsRect();
return false;
}
nsRegion opaque = TreatAsOpaque(this, aBuilder);
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, opaque);