FirstFloor.ModernUI.Windows.Controls.FrameworkElementAdorner.DetermineWidth C# (CSharp) Метод

        private double DetermineWidth() {
            if (!double.IsNaN(PositionX)) return _child.DesiredSize.Width;
            switch (_child.HorizontalAlignment) {
                case HorizontalAlignment.Left:
                    return _child.DesiredSize.Width;
                case HorizontalAlignment.Right:
                    return _child.DesiredSize.Width;
                case HorizontalAlignment.Center:
                    return _child.DesiredSize.Width;
                case HorizontalAlignment.Stretch:
                    return AdornedElement.ActualWidth;
                default:
                    return 0d;
            }
        }