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ported changes from mozilla upstream:

Browse source 
bug1351303, bug1352235, bug1371508, bug1430268, bug1352734
This commit is contained in:
Roy Tam 2019-05-22 21:02:27 +08:00
commit 11ce2e06e8
11 changed files with 123 additions and 31 deletions
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4
layout/base/nsDisplayList.cpp
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@ -3808,12 +3808,14 @@ nsDisplayLayerEventRegions::AddFrame(nsDisplayListBuilder* aBuilder,
// region on scrollbar frames that won't be placed in their own layer. See
// bug 1213324 for details.
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, borderBox);
mDispatchToContentHitRegion.SimplifyOutward(8);
} else if (aFrame->GetType() == nsGkAtoms::objectFrame) {
// If the frame is a plugin frame and wants to handle wheel events as
// default action, we should add the frame to dispatch-to-content region.
nsPluginFrame* pluginFrame = do_QueryFrame(aFrame);
if (pluginFrame && pluginFrame->WantsToHandleWheelEventAsDefaultAction()) {
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, borderBox);
mDispatchToContentHitRegion.SimplifyOutward(8);
}
}
@ -3850,6 +3852,7 @@ nsDisplayLayerEventRegions::AddFrame(nsDisplayListBuilder* aBuilder,
}
if (alreadyHadRegions) {
mDispatchToContentHitRegion.OrWith(CombinedTouchActionRegion());
mDispatchToContentHitRegion.SimplifyOutward(8);
}
}
}
@ -3859,6 +3862,7 @@ nsDisplayLayerEventRegions::AddInactiveScrollPort(const nsRect& aRect)
{
mHitRegion.Or(mHitRegion, aRect);
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, aRect);
mDispatchToContentHitRegion.SimplifyOutward(8);
}
bool