public IDisposable CaptureMouse(Action <MouseEventArgs> onMouseMove, Action <MouseButtonEventArgs> onMouseLeftButtonUp, Action onLostMouseCapture, Cursor cursor = null)
{
_currentCapture = _currentCapture?.DisposeExchange();
var canvas = _canvasPool.GetObject();
canvas.Cursor = cursor;
var isCaptured = canvas.CaptureMouse();
if (isCaptured == false)
{
return(null);
}
var dragProxyImpl = new DragProxyImpl(canvas, onMouseMove, onMouseLeftButtonUp, d =>
{
_canvasPool.Release(d.Canvas);
if (ReferenceEquals(_currentCapture, d))
{
onLostMouseCapture();
}
}, OnDisposed);
return(_currentCapture = dragProxyImpl);
}
private void OnDisposed(DragProxyImpl proxy)
{
if (ReferenceEquals(proxy, _currentCapture) == false)
{
return;
}
_currentCapture = null;
proxy.Canvas.ReleaseMouseCapture();
}
