1 files changed, 57 insertions, 0 deletions

diff --git a/src/dtf/WixToolset.Dtf.Resources/BitmapResource.cs b/src/dtf/WixToolset.Dtf.Resources/BitmapResource.cs
new file mode 100644
index 00000000..42c886cb
--- /dev/null
+++ b/src/dtf/WixToolset.Dtf.Resources/BitmapResource.cs
@@ -0,0 +1,57 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Dtf.Resources
+{
+    using System;
+    using System.IO;
+
+    /// <summary>
+    /// A subclass of Resource which provides specific methods for manipulating the resource data.
+    /// </summary>
+    /// <remarks>
+    /// The resource is of type <see cref="ResourceType.Bitmap"/> (RT_GROUPICON).
+    /// </remarks>
+    public sealed class BitmapResource : Resource
+    {
+        private const int SizeOfBitmapFileHeader = 14; // this is the sizeof(BITMAPFILEHEADER)
+
+        /// <summary>
+        /// Creates a new BitmapResource object without any data. The data can be later loaded from a file.
+        /// </summary>
+        /// <param name="name">Name of the resource. For a numeric resource identifier, prefix the decimal number with a "#".</param>
+        /// <param name="locale">Locale of the resource</param>
+        public BitmapResource(string name, int locale)
+            : this(name, locale, null)
+        {
+        }
+
+        /// <summary>
+        /// Creates a new BitmapResource object with data. The data can be later saved to a file.
+        /// </summary>
+        /// <param name="name">Name of the resource. For a numeric resource identifier, prefix the decimal number with a "#".</param>
+        /// <param name="locale">Locale of the resource</param>
+        /// <param name="data">Raw resource data</param>
+        public BitmapResource(string name, int locale, byte[] data)
+            : base(ResourceType.Bitmap, name, locale, data)
+        {
+        }
+
+        /// <summary>
+        /// Reads the bitmap from a .bmp file.
+        /// </summary>
+        /// <param name="path">Path to a bitmap file (.bmp).</param>
+        public void ReadFromFile(string path)
+        {
+            using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read))
+            {
+                // Move past the BITMAPFILEHEADER, and copy the rest of the bitmap as the resource data. Resource
+                // functions expect only the BITMAPINFO struct which exists just beyond the BITMAPFILEHEADER
+                // struct in bitmap files.
+                fs.Seek(BitmapResource.SizeOfBitmapFileHeader, SeekOrigin.Begin);
+
+                base.Data = new byte[fs.Length - BitmapResource.SizeOfBitmapFileHeader];
+                fs.Read(base.Data, 0, base.Data.Length);
+            }
+        }
+    }
+}