GestureDetector InitializeTapAndPanDetector()
{
var listener = new InnerGestureListener(new TapGestureHandler(() => View),
new PanGestureHandler(() => View, Control.Context.FromPixels));
return(new GestureDetector(listener));
}
GestureDetector InitializeTapAndPanAndSwipeDetector()
{
var context = Control.Context;
var listener = new InnerGestureListener(new TapGestureHandler(() => View),
new PanGestureHandler(() => View, context.FromPixels),
new SwipeGestureHandler(() => View, context.FromPixels));
return(new GestureDetector(context, listener));
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (disposing)
{
if (_listener != null)
{
_listener.Dispose();
_listener = null;
}
}
}
protected VisualElementRenderer() : base(Forms.Context)
{
_tapGestureHandler = new TapGestureHandler(() => View);
_panGestureHandler = new PanGestureHandler(() => View, Context.FromPixels);
_pinchGestureHandler = new PinchGestureHandler(() => View);
_gestureDetector =
new Lazy <GestureDetector>(
() =>
new GestureDetector(
_gestureListener =
new InnerGestureListener(_tapGestureHandler.OnTap, _tapGestureHandler.TapGestureRecognizers, _panGestureHandler.OnPan, _panGestureHandler.OnPanStarted, _panGestureHandler.OnPanComplete)));
_scaleDetector = new Lazy <ScaleGestureDetector>(
() => new ScaleGestureDetector(Context, new InnerScaleListener(_pinchGestureHandler.OnPinch, _pinchGestureHandler.OnPinchStarted, _pinchGestureHandler.OnPinchEnded))
);
}
public TapAndPanGestureDetector(Context context, InnerGestureListener listener) : base(context, listener)
{
_listener = listener;
UpdateLongPressSettings();
}
protected override void Dispose(bool disposing)
{
if ((_flags & VisualElementRendererFlags.Disposed) != 0)
{
return;
}
_flags |= VisualElementRendererFlags.Disposed;
if (disposing)
{
if (Tracker != null)
{
Tracker.Dispose();
Tracker = null;
}
if (_packager != null)
{
_packager.Dispose();
_packager = null;
}
if (_scaleDetector != null && _scaleDetector.IsValueCreated)
{
_scaleDetector.Value.Dispose();
_scaleDetector = null;
}
if (_gestureListener != null)
{
_gestureListener.Dispose();
_gestureListener = null;
}
if (ManageNativeControlLifetime)
{
int count = ChildCount;
for (var i = 0; i < count; i++)
{
AView child = GetChildAt(i);
child.Dispose();
}
}
RemoveAllViews();
if (Element != null)
{
Element.PropertyChanged -= _propertyChangeHandler;
UnsubscribeGestureRecognizers(Element);
if (Platform.GetRenderer(Element) == this)
{
Platform.SetRenderer(Element, null);
}
Element = null;
}
}
base.Dispose(disposing);
}
public TapAndPanGestureDetector(Context context, InnerGestureListener listener) : base(context, listener)
{
_listener = listener;
}