/// <summary> /// Adds the specified pattern to this resource dictionary /// and returns its local resource name. /// </summary> public string AddPattern(PdfTilingPattern pattern) { string name; if (!_resources.TryGetValue(pattern, out name)) { name = NextPatternName; _resources[pattern] = name; if (pattern.Reference == null) { Owner._irefTable.Add(pattern); } Patterns.Elements[name] = pattern.Reference; } return(name); }
PdfTilingPattern BuildPattern(VisualBrush 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)); } // Set X Step beyond the viewport if tilemode is set to none since // there is no other easy way to turn off tiling - NPJ double xStep = brush.Viewport.Width * (brush.TileMode == TileMode.None ? 2 : 1); double yStep = brush.Viewport.Height * (brush.TileMode == TileMode.None ? 2 : 1); // PdfTilingPattern //<< // /BBox [0 0 240 120] // /Length 74 // /Matrix [0.75 0 0 -0.75 0 480] // /PaintType 1 // /PatternType 1 // /Resources // << // /ExtGState // << // /GS0 10 0 R // >> // /XObject // << // /Fm0 17 0 R // >> // >> // /TilingType 3 // /Type /Pattern // /XStep 480 // /YStep 640 //>> //stream // q // 0 0 240 120 re // W n // q // 2.3999939 0 0 1.1999969 0 0 cm // /GS0 gs // /Fm0 Do // Q //Q //endstream PdfTilingPattern pattern = new PdfTilingPattern(Context.PdfDocument); Context.PdfDocument.Internals.AddObject(pattern); 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; }
/// <summary> /// Adds the specified pattern to this resource dictionary /// and returns its local resource name. /// </summary> public string AddPattern(PdfTilingPattern pattern) { string name; if (!this.resources.TryGetValue(pattern, out name)) { name = NextPatternName; this.resources[pattern] = name; if (pattern.Reference == null) Owner.irefTable.Add(pattern); Patterns.Elements[name] = pattern.Reference; } return name; }
/// <summary> /// Adds the specified pattern to this resource dictionary /// and returns its local resource name. /// </summary> public string AddPattern(PdfTilingPattern pattern) { string name = (string)this.resources[pattern]; if (name == null) { name = NextPatternName; this.resources[pattern] = name; if (pattern.Reference == null) this.Owner.irefTable.Add(pattern); Patterns.Elements[name] = pattern.Reference; } return name; }