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Bug 1421071 - Don't use fallback for invisible overlay scrollbar tracks on Mac with WebRender. r=jrmuizel

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MozReview-Commit-ID: 5PJVqgGi8uD

--HG--
extra : rebase_source : bc238065ee46d009120dde7ee8de56f640facb24
This commit is contained in:
Markus Stange 2017-11-27 17:35:36 -05:00
parent d5ba0f15df
commit 20a0c0f910
1 changed files with 11 additions and 2 deletions
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13
widget/cocoa/nsNativeThemeCocoa.mm
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@ -3080,10 +3080,19 @@ nsNativeThemeCocoa::CreateWebRenderCommandsForWidget(mozilla::wr::DisplayListBui
case NS_THEME_RANGE:
case NS_THEME_SCROLLBARTHUMB_VERTICAL:
case NS_THEME_SCROLLBARTHUMB_HORIZONTAL:
case NS_THEME_SCROLLBARTRACK_HORIZONTAL:
case NS_THEME_SCROLLBARTRACK_VERTICAL:
return false;
case NS_THEME_SCROLLBARTRACK_HORIZONTAL:
case NS_THEME_SCROLLBARTRACK_VERTICAL: {
BOOL isOverlay = nsLookAndFeel::UseOverlayScrollbars();
if (isOverlay && !IsParentScrollbarRolledOver(aFrame)) {
// There is no scrollbar track, draw nothing and return true.
return true;
}
// There is a scrollbar track and it needs to be drawn using fallback.
return false;
}
case NS_THEME_TEXTFIELD_MULTILINE: {
if (eventState.HasState(NS_EVENT_STATE_FOCUS)) {
// We can't draw the focus ring using webrender, so fall back to regular