svn path=/branches/mono-1-1-9/mcs/; revision=51207
[mono.git] / mcs / class / System.Drawing / System.Drawing / ToolboxBitmapAttribute.cs
1 //
2 // System.Drawing.ToolboxBitmapAttribute.cs
3 //
4 // Authors:
5 //   Dennis Hayes (dennish@Raytek.com)
6 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
7 //
8 // Copyright (C) 2002 Ximian, Inc. http://www.ximian.com
9 // Copyright (C) 2004 Novell, Inc. http://www.novell.com
10 //
11
12 //
13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
14 //
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
22 // 
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
25 // 
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 //
34
35 using System;
36
37 namespace System.Drawing
38 {
39         [AttributeUsage (AttributeTargets.Class)]
40         public class ToolboxBitmapAttribute : Attribute
41         {
42                 private Image smallImage = null;
43                 private Image bigImage = null;
44                 public static readonly ToolboxBitmapAttribute Default = new ToolboxBitmapAttribute();
45
46                 private ToolboxBitmapAttribute ()
47                 {
48                 }
49
50                 public ToolboxBitmapAttribute (string imageFile)
51                 {
52                 }
53                 
54                 public ToolboxBitmapAttribute (Type t)
55                 {
56                         smallImage = GetImageFromResource (t, null, false);
57                 }
58                 
59                 public ToolboxBitmapAttribute (Type t, string name)
60                 {
61                         smallImage = GetImageFromResource (t, name, false);
62                 }
63
64                 public override bool Equals (object value)
65                 {
66                         if (!(value is ToolboxBitmapAttribute))
67                                 return false;
68                         if (value == this)
69                                 return true;
70                         return ((ToolboxBitmapAttribute) value).smallImage == this.smallImage;
71                 }
72
73                 public override int GetHashCode ()
74                 {
75                         return (smallImage.GetHashCode () ^ bigImage.GetHashCode ());
76                 }
77
78                 public Image GetImage (object component)
79                 {
80                         return GetImage (component.GetType(), null, false);
81                 }
82
83                 public Image GetImage (object component, bool large)
84                 {
85                         return GetImage (component.GetType(), null, large);
86                 }
87
88                 public Image GetImage (Type type)
89                 {
90                         return GetImage (type, null, false);
91                 }
92
93                 public Image GetImage (Type type, bool large)
94                 {
95                         return GetImage (type, null, large);
96                 }
97
98                 public Image GetImage (Type type, string imgName, bool large)
99                 {
100                         if (smallImage == null)
101                                         smallImage = GetImageFromResource (type, imgName, false);
102                         
103                         if (large) {
104                                 if (bigImage == null)
105                                         bigImage = new Bitmap (smallImage, 32, 32);
106                                 return bigImage;
107                         }
108                         else
109                                 return smallImage;
110                 }
111
112                 public static Image GetImageFromResource (Type t, string imageName, bool large)
113                 {
114                         Bitmap bitmap;
115                         if (imageName == null)
116                                 imageName = t.Name + ".bmp";
117
118                         try {
119                                 using (System.IO.Stream s = t.Assembly.GetManifestResourceStream (t.Namespace + "." + imageName)){
120                                         if (s == null) {
121                                                 return null;
122                                         } else {
123                                                 bitmap = new Bitmap (s, false);
124                                         }
125                                 }
126                                 
127                                 //FIXME: thrown too easily
128                                 //if (bitmap.Width != 16 || bitmap.Height != 16)
129                                 //      throw new Exception ("ToolboxBitmap must be 16x16 pixels");
130                                 
131                                 if (large)
132                                         return new Bitmap (bitmap, 32, 32);
133                                 return bitmap;
134                         } catch {
135                                 return null;
136                         }
137                 }
138         }
139 }