MigraDoc support for rendering barcodes and PDFSharp support for Code 128 barcodes

src/foundation/src/MigraDoc/src/MigraDoc.Rendering/Rendering/BarcodeFormatInfo.cs

@@ -0,0 +1,21 @@
+// PDFsharp - A .NET library for processing PDF
+// See the LICENSE file in the solution root for more information.
+
+using System;
+using PdfSharp.Drawing;
+
+namespace MigraDoc.Rendering
+{
+    /// <summary>
+    /// Formatting information for an barcode.
+    /// </summary>
+    internal class BarcodeFormatInfo : ShapeFormatInfo
+    {
+        internal BarcodeFormatInfo()
+        {
+        }
+
+        internal XUnit Width;
+        internal XUnit Height;
+    }
+}

src/foundation/src/MigraDoc/src/MigraDoc.Rendering/Rendering/BarcodeRenderInfo.cs

@@ -0,0 +1,24 @@
+// PDFsharp - A .NET library for processing PDF
+// See the LICENSE file in the solution root for more information.
+
+using System;
+
+namespace MigraDoc.Rendering
+{
+    /// <summary>
+    /// Represents rendering information for barcodes.
+    /// </summary>
+    internal class BarcodeRenderInfo : ShapeRenderInfo
+    {
+        public BarcodeRenderInfo()
+        {
+        }
+
+        public override FormatInfo FormatInfo
+        {
+            get => _formatInfo;
+            internal set => _formatInfo = (BarcodeFormatInfo)value;
+        }
+        BarcodeFormatInfo _formatInfo = new();
+    }
+}

src/foundation/src/MigraDoc/src/MigraDoc.Rendering/Rendering/BarcodeRenderer.cs

@@ -0,0 +1,96 @@
+// PDFsharp - A .NET library for processing PDF
+// See the LICENSE file in the solution root for more information.
+
+using System;
+using System.IO;
+using System.Diagnostics;
+using MigraDoc.DocumentObjectModel;
+using PdfSharp.Drawing;
+using PdfSharp.Drawing.BarCodes;
+using MigraDoc.DocumentObjectModel.Shapes;
+using MigraDoc.Rendering.Resources;
+
+namespace MigraDoc.Rendering
+{
+    /// <summary>
+    /// Renders barcodes.
+    /// </summary>
+    // Adapted from https://forum.pdfsharp.net/viewtopic.php?p=3332#p3332
+    internal class BarcodeRenderer : ShapeRenderer
+    {
+        internal BarcodeRenderer(XGraphics gfx, Barcode barcode, FieldInfos fieldInfos)
+            : base(gfx, barcode, fieldInfos)
+        {
+            this._barcode = barcode;
+            BarcodeRenderInfo renderInfo = new BarcodeRenderInfo();
+            renderInfo.DocumentObject = this._shape;
+            this._renderInfo = renderInfo;
+        }
+
+        internal BarcodeRenderer(XGraphics gfx, RenderInfo renderInfo, FieldInfos fieldInfos)
+            : base(gfx, renderInfo, fieldInfos)
+        {
+            this._barcode = (Barcode)renderInfo.DocumentObject;
+        }
+
+        internal override void Format(Area area, FormatInfo previousFormatInfo)
+        {
+            BarcodeFormatInfo formatInfo = (BarcodeFormatInfo)this._renderInfo.FormatInfo;
+
+            formatInfo.Height = this._barcode.Height.Point;
+            formatInfo.Width = this._barcode.Width.Point;
+
+            base.Format(area, previousFormatInfo);
+        }
+
+        protected override XUnit ShapeHeight
+        {
+            get
+            {
+                BarcodeFormatInfo formatInfo = (BarcodeFormatInfo)this._renderInfo.FormatInfo;
+                return formatInfo.Height + this._lineFormatRenderer.GetWidth();
+            }
+        }
+
+        protected override XUnit ShapeWidth
+        {
+            get
+            {
+                BarcodeFormatInfo formatInfo = (BarcodeFormatInfo)this._renderInfo.FormatInfo;
+                return formatInfo.Width + this._lineFormatRenderer.GetWidth();
+            }
+        }
+
+        internal override void Render()
+        {
+            RenderFilling();
+
+            BarcodeFormatInfo formatInfo = (BarcodeFormatInfo)this._renderInfo.FormatInfo;
+            Area contentArea = this._renderInfo.LayoutInfo.ContentArea;
+            XRect destRect = new XRect(contentArea.X, contentArea.Y, formatInfo.Width, formatInfo.Height);
+
+            BarCode gfxBarcode = null;
+
+            if (this._barcode.Type == BarcodeType.Barcode39)
+                gfxBarcode = new Code3of9Standard();
+            else if (this._barcode.Type == BarcodeType.Barcode25i)
+                gfxBarcode = new Code2of5Interleaved();
+            else if (this._barcode.Type == BarcodeType.Barcode128)
+                gfxBarcode = new Code128();
+
+            // if gfxBarcode is null, the barcode type is not supported
+            if (gfxBarcode != null)
+            {
+                gfxBarcode.Text = this._barcode.Code;
+                gfxBarcode.Direction = CodeDirection.LeftToRight;
+                gfxBarcode.Size = new XSize(ShapeWidth, ShapeHeight);
+
+                this._gfx.DrawBarCode(gfxBarcode, XBrushes.Black, destRect.Location);
+            }
+
+            RenderLine();
+        }
+
+        Barcode _barcode;
+    }
+}

src/foundation/src/MigraDoc/src/MigraDoc.Rendering/Rendering/Renderer.cs

@@ -135,6 +135,8 @@ internal FieldInfos FieldInfos
                 renderer = new ChartRenderer(gfx, chart, fieldInfos);
             else if (documentObject is Image image)
                 renderer = new ImageRenderer(gfx, image, fieldInfos);
+            else if (documentObject is Barcode)
+                renderer = new BarcodeRenderer(gfx, (Barcode)documentObject, fieldInfos);
 
             if (renderer != null)
                 renderer._documentRenderer = documentRenderer;
@@ -172,6 +174,8 @@ internal static Renderer Create(XGraphics gfx, DocumentRenderer documentRenderer
             //  renderer = new ChartRenderer(gfx, renderInfo, fieldInfos);
             else if (renderInfo.DocumentObject is Image)
                 renderer = new ImageRenderer(gfx, renderInfo, fieldInfos);
+            else if (renderInfo.DocumentObject is Barcode)
+                renderer = new BarcodeRenderer(gfx, renderInfo, fieldInfos);
 
             if (renderer != null)
                 renderer._documentRenderer = documentRenderer;

src/foundation/src/PDFsharp/src/PdfSharp/Drawing.BarCodes/BcgSR.cs

@@ -42,5 +42,10 @@ internal static string DataMatrixInvalid(int columns, int rows)
         {
             return $"'{rows}'x'{columns}' is an invalid ecc200 DataMatrix size.";
         }
+
+        internal static string InvalidCode128(int index)
+        {
+            return $"Invalid character for Code 128 at index {index}.";
+        }
     }
 }