PdfRpt.Core.Helper.DiagonalWatermarkManager.ReserveWatermarkSpace C# (CSharp) Method

        public void ReserveWatermarkSpace(PdfWriter writer)
        {
            if (_watermarkTemplate == null) return;

            var canvas = writer.DirectContent;
            canvas.SaveState();
            canvas.SetGState(new PdfGState
            {
                FillOpacity = PageSetup.DiagonalWatermark.FillOpacity,
                StrokeOpacity = PageSetup.DiagonalWatermark.StrokeOpacity
            });
            canvas.AddTemplate(_watermarkTemplate, 0, 0);
            canvas.RestoreState();
        }