ApplyWatermark.ApplyWatermark.GetTextPosition C# (CSharp) Method

        private PointF GetTextPosition ( Image image, SizeF size )
        {
            PointF point = default(PointF);
            switch (TextAlignment)
            {
                case ContentAlignment.BottomCenter:
                    point = new PointF((image.Width - size.Width) / 2,
                        (image.Height - size.Height));
                    break;
                case ContentAlignment.BottomLeft:
                    point = new PointF(0, (image.Height - size.Height));
                    break;
                case ContentAlignment.BottomRight:
                    point = new PointF((image.Width - size.Width),
                        (image.Height - size.Height));
                    break;
                case ContentAlignment.MiddleCenter:
                    point = new PointF((image.Width - size.Width) / 2,
                        (image.Height - size.Height) / 2);
                    break;
                case ContentAlignment.MiddleLeft:
                    point = new PointF(0, (image.Height - size.Height) / 2);
                    break;
                case ContentAlignment.MiddleRight:
                    point = new PointF((image.Width - size.Width),
                        (image.Height - size.Height) / 2);
                    break;
                case ContentAlignment.TopCenter:
                    point = new PointF((image.Width - size.Width) / 2, 0);
                    break;
                case ContentAlignment.TopLeft:
                    point = new PointF(0, 0);
                    break;
                case ContentAlignment.TopRight:
                    point = new PointF((image.Width - size.Width), 0);
                    break;
            }
            return point;
        }
    }