(No longer employed by Mozilla) Aaron Klotz Reporter
	Description • 7 years ago

UI animations are very choppy when Windows is set to power saving mode. For a good example, expand the awesomebar.

I think it would be prudent to disable chrome animations for the duration that power saving mode is set.

Win32 provides both an API to query for the mode, as well as notifications when the mode changes. We can add that support to Widget as necessary.

	Jared Wein [:jaws] (please needinfo? me)
	Comment 1 • 7 years ago

Aaron, are you talking about https://msdn.microsoft.com/en-us/library/windows/desktop/aa373232(v=vs.85).aspx, the RegisterPowerSettingNotification function and associated GUID_POWER_SAVING_STATUS ?

	Jared Wein [:jaws] (please needinfo? me)
	Comment 2 • 7 years ago

If we are able to get a notification of some sort or check a property through JS, this will be fairly easy to do on the frontend since many of our animations are now guarded by a preference check for toolkit.cosmeticAnimations.enabled. We could simply add to the conditions wherever we do that check.

	(No longer employed by Mozilla) Aaron Klotz Reporter
	Comment 3 • 7 years ago

(In reply to Jared Wein [:jaws] (please needinfo? me) from comment #1)
> Aaron, are you talking about
> https://msdn.microsoft.com/en-us/library/windows/desktop/aa373232(v=vs.85).
> aspx, the RegisterPowerSettingNotification function and associated
> GUID_POWER_SAVING_STATUS ?

Yeah. I have filed bug 1409869 to get that done on the platform side.