private void LaunchKineticScroll(double bottomViewPanDelta)
{
// Don't kinetic scroll if it isn't desired
if (!ShouldKineticScroll)
{
return;
}
// Don't kinetic scroll if the finger barely moved
if (Math.Abs(bottomViewPanDelta) < PanThreshold)
{
return;
}
_bottomView.AbortAnimation(KineticScrollAnimationName);
_bottomViewContainer.AnimateKinetic(KineticScrollAnimationName, (d, d1) =>
{
DebugWriteLine($"Kinetic: d={d} d1={d1}");
// _bottomViewContainer.ScrollToAsync(0, _bottomViewContainer.ScrollY + (Math.Sign(-d) * d1), false);
var handled = HandlePan(PanSource.KineticScroll, Math.Sign(d) * d1).GetAwaiter().GetResult();
// Returning true means "keep going"
return(handled);
}, bottomViewPanDelta, KineticScrollDragCoefficient, OnKineticScrollingCompleted);
}
public static void CancelColorAnimations(View view)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
view.AbortAnimation(ColorToHandle);
}
private async void FadeControl(bool toBecomeVisible)
{
View.AbortAnimation("FadeTo");
if (toBecomeVisible)
{
View.IsVisible = true;
View.Opacity = 0.0;
var isCancelled = await View.FadeTo(1.0, AnimationHelper.ControlFadeInDurationInMs);
System.Diagnostics.Debug.WriteLine($"Did fadein cancel: {isCancelled}");
}
else
{
var isCancelled = await View.FadeTo(0.0, AnimationHelper.ControlFadeOutDurationInMs);
System.Diagnostics.Debug.WriteLine($"Did fadeout cancel: {isCancelled}");
View.IsVisible = false;
}
}
public void Cancel() => View.AbortAnimation(animationName);