public void PanGestureRecognizer_PanUpdated(System.Object sender, Xamarin.Forms.PanUpdatedEventArgs e)
{
// Handle the pan
switch (e.StatusType)
{
case GestureStatus.Running:
// Translate and ensure we don't y + e.TotalY pan beyond the wrapped user interface element bounds.
var translateY = Math.Max(Math.Min(0, y + e.TotalY), -Math.Abs((Height * .25) - Height));
BottomSheet.TranslateTo(BottomSheet.X, translateY, 20);
break;
case GestureStatus.Completed:
// Store the translation applied during the pan
y = BottomSheet.TranslationY;
// At the end of the event - snap to the closest location
var finalTranslation = Math.Max(Math.Min(0, -1000), -Math.Abs(GetClosestLockState(e.TotalY + y)));
// Depending on Swipe Up or Down - change the snapping animation
if (IsSwipeUp(e))
{
BottomSheet.TranslateTo(BottomSheet.X, finalTranslation, 250, Easing.SpringIn);
}
else
{
BottomSheet.TranslateTo(BottomSheet.X, finalTranslation, 250, Easing.SpringOut);
}
// Dismiss the keyboard after a transition
y = BottomSheet.TranslationY;
break;
}
}
private async void GamePage_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == nameof(GameViewModel.Progress))
{
AdjustTemp(((GameViewModel)BindingContext).Progress);
}
else if (e.PropertyName == nameof(GameViewModel.VictoryMode))
{
bool state = ((GameViewModel)BindingContext).VictoryMode;
Shell.Current.FlyoutBehavior = state ? FlyoutBehavior.Disabled : FlyoutBehavior.Flyout;
if (state)
{
OldImage.Opacity = 1;
HamburgerButton.FadeTo(0, 800u, Easing.CubicOut);
await BottomSheet.TranslateTo(0, Height, 800u, Easing.CubicOut);
Darkener.FadeTo(0.4);
VictoryView.FadeTo(1);
}
else
{
Darkener.FadeTo(0);
await VictoryView.FadeTo(0);
await OldImage.FadeTo(0, easing : Easing.CubicIn);
await Task.Delay(250);
HamburgerButton.FadeTo(0.85);
await BottomSheet.TranslateTo(0, positions[1], 350u, Easing.CubicOut);
}
}
else if (e.PropertyName == nameof(GameViewModel.IsDone))
{
if (((GameViewModel)BindingContext).IsDone)
{
TempFinisher.FadeTo(1);
}
else
{
TempFinisher.FadeTo(0);
}
}
}
private void SnapToNearest(double vel)
{
int indexRight = 1;
while (indexRight < positions.Length && BottomSheet.TranslationY > positions[indexRight])
{
++indexRight;
}
int indexLeft = indexRight - 1;
double newTrans;
if (Math.Abs(vel) < 3)
{
newTrans = (positions[indexRight] - BottomSheet.TranslationY <= BottomSheet.TranslationY - positions[indexLeft]) ?
positions[indexRight] : positions[indexLeft];
}
else
{
newTrans = vel < 0 ? positions[indexLeft] : positions[indexRight];
}
BottomSheet.TranslateTo(0, newTrans, 350u, Easing.CubicOut);
}
