protected override void OnDetached()
{
if (_effect?.Control == null)
{
return;
}
if (_gestureLayer != null)
{
_gestureLayer.ClearCallbacks();
_gestureLayer.Unrealize();
_gestureLayer = null;
}
_effect.Control = null;
_effect = null;
}
protected override void OnDetached()
{
if (effect?.Element == null)
{
return;
}
if (gestureLayer != null)
{
gestureLayer.ClearCallbacks();
gestureLayer.Unrealize();
gestureLayer = null;
}
effect.Element = null;
effect = null;
}
protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.Image> args)
{
base.OnElementChanged(args);
if (Control == null)
{
return;
}
if (GestureRecognizer == null)
{
GestureRecognizer = new GestureLayer(Control);
GestureRecognizer.Attach(Control);
}
if (args.NewElement == null)
{
GestureRecognizer.ClearCallbacks();
return;
}
else
{
Control.Clicked += SendClicked;
}
if (!(args.NewElement is ImageButton button))
{
return;
}
GestureRecognizer.SetTapCallback(GestureLayer.GestureType.Tap, GestureLayer.GestureState.Start, x => {
KeyDown();
});
GestureRecognizer.SetTapCallback(GestureLayer.GestureType.Tap, GestureLayer.GestureState.End, x => {
KeyUp();
});
GestureRecognizer.SetTapCallback(GestureLayer.GestureType.LongTap, GestureLayer.GestureState.End, x => {
KeyUp();
});
GestureRecognizer.SetTapCallback(GestureLayer.GestureType.LongTap, GestureLayer.GestureState.Abort, x => {
KeyUp();
});
}
