private Task AnimateBlueBarOut()
        {
            var r = BlueBarLayout.Bounds;

            r.Width = _originalWidth;
            r.Left  = _originalLeft;
            return(BlueBarLayout.LayoutTo(r, 150));
        }
        private Task AnimateBlueBarIn()
        {
            var r = BlueBarLayout.Bounds;

            _originalLeft  = r.Left;
            _originalWidth = r.Width;

            r.Width = MenuLayout.Width + 5;
            r.Left  = r.Left - ((Width - _originalWidth) / 2);
            return(BlueBarLayout.LayoutTo(r, 150));
        }