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Bug 1221186 - Don't clobber a fling-snap with a snap-to-where-we-are-now in the overscroll handoff chain. r=botond

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This commit is contained in:
Kartikaya Gupta 2015-11-05 09:31:39 -05:00
parent 7134329af8
commit 9859e44130
1 changed files with 7 additions and 2 deletions
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9
gfx/layers/apz/src/AsyncPanZoomController.cpp
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@ -2692,8 +2692,11 @@ bool AsyncPanZoomController::SnapBackIfOverscrolled() {
return true;
}
// If we don't kick off an overscroll animation, we still need to ask the
// main thread to snap to any nearby snap points.
RequestSnap();
// main thread to snap to any nearby snap points, assuming we haven't already
// done so when we started this fling
if (mState != FLING) {
RequestSnap();
}
return false;
}
@ -3563,6 +3566,8 @@ void AsyncPanZoomController::ShareCompositorFrameMetrics() {
void AsyncPanZoomController::RequestSnap() {
if (RefPtr<GeckoContentController> controller = GetGeckoContentController()) {
APZC_LOG("%p requesting snap near %s\n", this,
Stringify(mFrameMetrics.GetScrollOffset()).c_str());
controller->RequestFlingSnap(mFrameMetrics.GetScrollId(),
mFrameMetrics.GetScrollOffset());
}