private async void OnPreviewPress(object sender, RoutedEventArgs e)
{
if (!IsEnabled)
{
return;
}
if (firstMouseDownHash == -1)
{
firstMouseDownHash = GetHashCode();
IsPressedInternal = true;
if (e is MouseButtonEventArgs)
{
PreviewMouseLeftButtonDown?.Invoke(sender, e as MouseButtonEventArgs);
}
else if (e is TouchEventArgs)
{
PreviewTouchDown?.Invoke(sender, e as TouchEventArgs);
}
PressHold?.Invoke(this, new PressHoldEventArgs(PressHoldEventArgs.EventType.Press));
if (LongPressEnabled)
{
var longPressMSec = LongPressDelay.TotalMilliseconds;
var longPressStep = 10;
var longPressStepDelay = longPressMSec / longPressStep;
while (longPressMSec > 0)
{
if (firstMouseDownHash == -1)
{
break;
}
await Task.Delay(TimeSpan.FromMilliseconds(longPressStepDelay));
longPressMSec -= longPressStepDelay;
}
if (firstMouseDownHash == GetHashCode())
{
ReleaseAllTouchCaptures();
ReleaseMouseCapture();
firstMouseDownHash = -1;
LongPress?.Invoke(this, e);
IsPressedInternal = false;
e.Handled = true;
}
}
}
}
protected void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
PreviewMouseLeftButtonDown?.Invoke(this, e.ToMouseButtonEventArgsInt(MouseButton.Left, MouseButtonState.Pressed));
}
