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// 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);
}
}
}
}
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