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

    public void BeginContentRaw()
    {
      if (!this.contentInitialized)
      {
        // Save initial graphic state
        WriteSaveState("BeginContent", null);
        this.contentInitialized = true;
      }
    }

        PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
        {
            // Bounding box lays always at (0,0)
            XRect   bbox   = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
            XMatrix matrix = transform;

            matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X, brush.Viewport.Y));
            if (brush.Transform != null)
            {
                matrix.Prepend(new XMatrix(brush.Transform.Matrix.m11, brush.Transform.Matrix.m12, brush.Transform.Matrix.m21,
                                           brush.Transform.Matrix.m22, brush.Transform.Matrix.offsetX, brush.Transform.Matrix.offsetY));
            }

            // HACK by [email protected]
            // Avoid extra thin lines at the right and at the bottom of original image
            double xStep = brush.Viewport.Width + 1;
            double yStep = brush.Viewport.Height + 1;

            PdfTilingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject <PdfTilingPattern>();

            pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
            pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1);   // Color
            pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3);  // Constant spacing and faster tiling
            pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
            pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
            pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
            pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);

            // Set extended graphic state like Acrobat do
            PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();

            pdfExtGState.SetDefault1();

            PdfFormXObject pdfForm = BuildForm(brush);

            PdfContentWriter writer = new PdfContentWriter(Context, pattern);

            writer.BeginContentRaw();

            // Acrobat 8 clips to bounding box, so do we
            //writer.WriteClip(bbox);

            XMatrix transformation = new XMatrix();
            double  dx             = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
            double  dy             = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;

            transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
            writer.WriteMatrix(transformation);
            writer.WriteGraphicsState(pdfExtGState);

            string name = writer.Resources.AddForm(pdfForm);

            writer.WriteLiteral(name + " Do\n");

            writer.EndContent();

            return(pattern);
        }