protected override void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
RemoveGestureRecognizer(panGesture);
panGesture.RemoveTarget(panGestureToken);
}
if (e.NewElement != null)
{
var dragView = Element as DraggableView;
panGesture = new UIPanGestureRecognizer();
panGestureToken = panGesture.AddTarget(DetectPan);
AddGestureRecognizer(panGesture);
dragView.RestorePositionCommand = new Command(() =>
{
if (!firstTime)
{
Center = originalPosition;
}
});
}
}
protected override void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
RemoveGestureRecognizer(panGesture);
panGesture.RemoveTarget(panGestureToken);
}
if (e.NewElement != null)
{
displayMetrics = UIScreen.MainScreen.Bounds;
sH = displayMetrics.Height;
sW = displayMetrics.Width;
var dragView = Element as RadialMenu;
panGesture = new UIPanGestureRecognizer();
panGestureToken = panGesture.AddTarget(DetectPan);
AddGestureRecognizer(panGesture);
dragView.RestorePositionCommand = new Command(() =>
{
if (!firstTime)
{
Center = originalPosition;
}
});
}
}
protected override void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
RemoveGestureRecognizer(panGesture);
panGesture.RemoveTarget(panGestureToken);
}
if (e.NewElement != null)
{
var dragView = Element as DrawableAbsoluteLayout;
panGesture = new UIPanGestureRecognizer();
panGestureToken = panGesture.AddTarget(DetectPan);
AddGestureRecognizer(panGesture);
tapGesture = new UITapGestureRecognizer();
tapGesture.NumberOfTapsRequired = 2;
tapGestureToken = tapGesture.AddTarget(DetectTapped);
AddGestureRecognizer(tapGesture);
dragView.RestorePositionCommand = new Command(() =>
{
if (!firstTime)
{
Center = originalPosition;
}
});
}
}
public void AttachAction(Action <NSObject> action)
{
if (GestureView.GestureRecognizers == null || GestureView.GestureRecognizers?.Length == 0)
{
var recognizer = new TGesture();
GestureView.AddGestureRecognizer(recognizer);
}
if (GestureToken == null)
{
GestureToken = GestureView.GestureRecognizers [0]?.AddTarget(action);
}
}
public void DetachAction()
{
if (GestureToken != null)
{
if (GestureView.GestureRecognizers != null && GestureView.GestureRecognizers.Length > 0)
{
foreach (var recognizer in GestureView.GestureRecognizers)
{
if (recognizer is TGesture)
{
recognizer.RemoveTarget(GestureToken);
}
}
}
GestureToken = null;
}
}
public BarLineChartGesture()
{
tapGestureRecognizer = new UITapGestureRecognizer();
pinchGestureRecognizer = new UIPinchGestureRecognizer()
{
ShouldRecognizeSimultaneously = GestureRecognize
};
doubleTapGestureRecognizer = new UITapGestureRecognizer
{
NumberOfTapsRequired = 2
};
panGestureRecognizer = new UIPanGestureRecognizer()
{
ShouldRecognizeSimultaneously = GestureRecognize,
};
tapToken = tapGestureRecognizer.AddTarget(HandleTap);
pinchToken = pinchGestureRecognizer.AddTarget(HandlePinch);
doubleTapToken = doubleTapGestureRecognizer.AddTarget(HandleDoubleTap);
panToken = panGestureRecognizer.AddTarget(HandlePan);
pinchEvent = new PinchEvent();
panEvent = new PanEvent();
}
public PieRadarChartGesture()
{
tapGesture = new UITapGestureRecognizer();
touchGesture = new TouchGesture(this);
tapToken = tapGesture.AddTarget(HandleTap);
}
