@joebigelow / wix-1
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1 // 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.
2
3 namespace WixToolset.Dtf.Resources
4 {
5 using System;
6 using System.IO;
7 using System.Text;
8 using System.Reflection;
9 using System.Collections;
10 using System.Collections.Generic;
11 using System.Globalization;
12 using System.Diagnostics.CodeAnalysis;
13
14 /// <summary>
15 /// A subclass of Resource which provides specific methods for manipulating the resource data.
16 /// </summary>
17 /// <remarks>
18 /// The resource is of type <see cref="ResourceType.GroupIcon"/> (RT_GROUPICON).
19 /// </remarks>
20 public sealed class GroupIconResource : Resource
21 {
22 internal bool dirty;
23 private GroupIconInfo rawGroupIconInfo;
24 private List<Resource> icons;
25
26 /// <summary>
27 /// Creates a new GroupIconResource object without any data. The data can be later loaded from a file.
28 /// </summary>
29 /// <param name="name">Name of the resource. For a numeric resource identifier, prefix the decimal number with a "#".</param>
30 /// <param name="locale">Locale of the resource</param>
31 public GroupIconResource(string name, int locale)
32 : this(name, locale, null)
33 {
34 }
35
36 /// <summary>
37 /// Creates a new GroupIconResource object with data. The data can be later saved to a file.
38 /// </summary>
39 /// <param name="name">Name of the resource. For a numeric resource identifier, prefix the decimal number with a "#".</param>
40 /// <param name="locale">Locale of the resource</param>
41 /// <param name="data">Raw resource data</param>
42 public GroupIconResource(string name, int locale, byte[] data)
43 : base(ResourceType.GroupIcon, name, locale, data)
44 {
45 this.RefreshIconGroupInfo(data);
46 }
47
48 /// <summary>
49 /// Gets or sets the raw data of the resource. The data is in the format of the RT_GROUPICON resource structure.
50 /// </summary>
51 public override byte[] Data
52 {
53 get
54 {
55 if (this.dirty)
56 {
57 base.Data = this.rawGroupIconInfo.GetResourceData();
58 this.dirty = false;
59 }
60
61 return base.Data;
62 }
63 set
64 {
65 this.RefreshIconGroupInfo(value);
66
67 base.Data = value;
68 this.dirty = false;
69 }
70 }
71
72 /// <summary>
73 /// Enumerates the the icons in the icon group.
74 /// </summary>
75 public IEnumerable<Resource> Icons { get { return this.icons; } }
76
77 /// <summary>
78 /// Reads the icon group from a .ico file.
79 /// </summary>
80 /// <param name="path">Path to an icon file (.ico).</param>
81 public void ReadFromFile(string path)
82 {
83 this.rawGroupIconInfo = new GroupIconInfo();
84 this.icons = new List<Resource>();
85 using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read, FileShare.Read))
86 {
87 this.rawGroupIconInfo.ReadFromFile(fs);
88
89 // After reading the group icon info header from the file, read all the icons.
90 for (int i = 0; i < this.rawGroupIconInfo.DirectoryInfo.Length; ++i)
91 {
92 ushort index = this.rawGroupIconInfo.DirectoryInfo[i].imageIndex;
93 uint offset = this.rawGroupIconInfo.DirectoryInfo[i].imageOffset;
94 uint size = this.rawGroupIconInfo.DirectoryInfo[i].imageSize;
95 byte[] data = new byte[size];
96
97 fs.Seek(offset, SeekOrigin.Begin);
98 fs.Read(data, 0, data.Length);
99
100 Resource resource = new Resource(ResourceType.Icon, String.Concat("#", index), this.Locale, data);
101 this.icons.Add(resource);
102 }
103 }
104
105 this.dirty = true;
106 }
107
108 private void RefreshIconGroupInfo(byte[] refreshData)
109 {
110 this.rawGroupIconInfo = new GroupIconInfo();
111 this.icons = new List<Resource>();
112 if (refreshData != null)
113 {
114 this.rawGroupIconInfo.ReadFromResource(refreshData);
115 }
116
117 this.dirty = true;
118 }
119 }
120 }