Channel9Downloader.Controls.FrameworkElementAdorner.DetermineX C# (CSharp) Method

        private double DetermineX()
        {
            switch (_child.HorizontalAlignment)
            {
                case HorizontalAlignment.Left:
                    {
                        if (_horizontalAdornerPlacement == AdornerPlacement.Outside)
                        {
                            return -_child.DesiredSize.Width + _offsetX;
                        }

                        return _offsetX;
                    }

                case HorizontalAlignment.Right:
                    {
                        if (_horizontalAdornerPlacement == AdornerPlacement.Outside)
                        {
                            double adornedWidth = AdornedElement.ActualWidth;
                            return adornedWidth + _offsetX;
                        }
                        else
                        {
                            double adornerWidth = _child.DesiredSize.Width;
                            double adornedWidth = AdornedElement.ActualWidth;
                            double x = adornedWidth - adornerWidth;
                            return x + _offsetX;
                        }
                    }

                case HorizontalAlignment.Center:
                    {
                        double adornerWidth = _child.DesiredSize.Width;
                        double adornedWidth = AdornedElement.ActualWidth;
                        double x = (adornedWidth / 2) - (adornerWidth / 2);
                        return x + _offsetX;
                    }

                case HorizontalAlignment.Stretch:
                    {
                        return 0.0;
                    }
            }

            return 0.0;
        }