For shading types 4 to 7, add Data property containing descriptive data characterizing the shading's gradient fill

src/UglyToad.PdfPig/Graphics/Colors/Shading.cs

@@ -1,5 +1,6 @@
 namespace UglyToad.PdfPig.Graphics.Colors
 {
+    using System;
     using UglyToad.PdfPig.Core;
     using UglyToad.PdfPig.Functions;
     using UglyToad.PdfPig.Tokens;
@@ -329,6 +330,11 @@ public sealed class FreeFormGouraudShading : Shading
         /// </summary>
         public override PdfFunction[]? Functions { get; }
 
+        /// <summary>
+        /// The decoded stream data containing descriptive data characterizing the shading's gradient fill.
+        /// </summary>
+        public Memory<byte> Data { get; }
+
         /// <summary>
         /// Create a new <see cref="FreeFormGouraudShading"/>.
         /// </summary>
@@ -342,6 +348,7 @@ public FreeFormGouraudShading(bool antiAlias, StreamToken shadingStream,
             BitsPerFlag = bitsPerFlag;
             Decode = decode;
             Functions = functions;
+            Data = shadingStream.Data;
         }
     }
 
@@ -392,6 +399,11 @@ public sealed class LatticeFormGouraudShading : Shading
         /// </summary>
         public override PdfFunction[]? Functions { get; }
 
+        /// <summary>
+        /// The decoded stream data containing descriptive data characterizing the shading's gradient fill.
+        /// </summary>
+        public Memory<byte> Data { get; }
+
         /// <summary>
         /// Create a new <see cref="LatticeFormGouraudShading"/>.
         /// </summary>
@@ -405,6 +417,7 @@ public LatticeFormGouraudShading(bool antiAlias, StreamToken shadingStream,
             VerticesPerRow = verticesPerRow;
             Decode = decode;
             Functions = functions;
+            Data = shadingStream.Data;
         }
     }
 
@@ -457,6 +470,11 @@ public class CoonsPatchMeshesShading : Shading
         /// </summary>
         public override PdfFunction[]? Functions { get; }
 
+        /// <summary>
+        /// The decoded stream data containing descriptive data characterizing the shading's gradient fill.
+        /// </summary>
+        public Memory<byte> Data { get; }
+
         /// <summary>
         /// Create a new <see cref="CoonsPatchMeshesShading"/>.
         /// </summary>
@@ -470,6 +488,7 @@ public CoonsPatchMeshesShading(bool antiAlias, StreamToken shadingStream,
             BitsPerFlag = bitsPerFlag;
             Decode = decode;
             Functions = functions;
+            Data = shadingStream.Data;
         }
     }
 
@@ -522,6 +541,11 @@ public sealed class TensorProductPatchMeshesShading : Shading
         /// </summary>
         public override PdfFunction[]? Functions { get; }
 
+        /// <summary>
+        /// The decoded stream data containing descriptive data characterizing the shading's gradient fill.
+        /// </summary>
+        public Memory<byte> Data { get; }
+
         /// <summary>
         /// Create a new <see cref="TensorProductPatchMeshesShading"/>.
         /// </summary>
@@ -535,6 +559,7 @@ public TensorProductPatchMeshesShading(bool antiAlias, StreamToken shadingStream
             BitsPerFlag = bitsPerFlag;
             Decode = decode;
             Functions = functions;
+            Data = shadingStream.Data;
         }
     }