PdfSharp.Xps.Rendering.PdfContentWriter.WriteVisual C# (CSharp) Méthode

    internal void WriteVisual(Visual visual) // Is internal for VisualBrush
    {
      WriteSaveState("begin Visual", null);
      WriteElements(visual.Content);
      WriteRestoreState("end Visual", null);
    }

        /// <summary>
        /// Builds a PdfFormXObject from the specified brush.
        /// </summary>
        PdfFormXObject BuildForm(VisualBrush brush)
        {
            //<<
            //  /BBox [0 100 100 0]
            //  /Length 65
            //  /Matrix [1 0 0 1 0 0]
            //  /Resources
            //  <<
            //    /ColorSpace
            //    <<
            //      /CS0 15 0 R
            //    >>
            //    /ExtGState
            //    <<
            //      /GS0 10 0 R
            //    >>
            //    /ProcSet [/PDF /ImageC /ImageI]
            //    /XObject
            //    <<
            //      /Im0 16 0 R
            //    >>
            //  >>
            //  /Subtype /Form
            //>>
            //stream
            //  q
            //  0 0 100 100 re
            //  W n
            //  q
            //    /GS0 gs
            //    100 0 0 -100 0 100 cm
            //    /Im0 Do
            //  Q
            //Q
            //endstream
            PdfFormXObject pdfForm = Context.PdfDocument.Internals.CreateIndirectObject <PdfFormXObject>();

            double width  = brush.Viewport.Width;
            double height = brush.Viewport.Height;

            pdfForm.DpiX = 96;
            pdfForm.DpiY = 96;

            // view box
            XRect box = new XRect(0, 0, width, height);

            pdfForm.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(0, height, width, 0));
            pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());

            PdfContentWriter writer = new PdfContentWriter(Context, pdfForm);

            pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());

            writer.BeginContentRaw();
            writer.WriteLiteral("-100 Tz\n");
            XMatrix matrix = new XMatrix(width, 0, 0, -height, 0, height);

            writer.WriteLiteral("q\n");
            //writer.WriteMatrix(matrix);
            writer.WriteVisual(brush.Visual);
            writer.WriteLiteral("Q\n");

#if DEBUG
            if (DevHelper.BorderPatterns)
            {
                writer.WriteLiteral("1 1 1 rg 0 0 m {0:0.###} 0 l {0:0.###} {1:0.###} l 0 {1:0.###} l h s\n", width, height);
            }
#endif

            writer.EndContent();

            return(pdfForm);
        }