mcs/class/System.Drawing/System.Drawing/SystemIcons.jvm.cs

   1 //
   2 // System.Drawing.SystemIcons.cs
   3 //
   4 // Authors:
   5 //  Vladimir Krasnov (vladimirk@mainsoft.com)
   6 //
   7 // Copyright (C) 2005 Mainsoft Corporation (http://www.mainsoft.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.IO;
  33 using System.Configuration;
  34 using System.Collections;
  35 using System.Collections.Specialized;
  36
  37 namespace System.Drawing
  38 {
  39         public sealed class SystemIcons
  40         {
  41                 private static readonly string SYSTEM_ICONS = "IconsResource";
  42
  43                 private SystemIcons()
  44                 {
  45                 }
  46
  47                 public static Icon Application { get { return LoadIcon("Application");} }
  48                 public static Icon Asterisk { get { return LoadIcon("Asterisk");} }
  49                 public static Icon Error { get { return LoadIcon("Error");} }
  50                 public static Icon Exclamation { get { return LoadIcon("Exclamation");} }
  51                 public static Icon Hand { get { return LoadIcon("Hand");} }
  52                 public static Icon Information { get { return LoadIcon("Information");} }
  53                 public static Icon Question { get { return LoadIcon("Question");} }
  54                 public static Icon Warning { get { return LoadIcon("Warning");} }
  55                 public static Icon WinLogo { get { return LoadIcon("WinLogo");} }
  56
  57                 private static Icon LoadIcon (string iconName)
  58                 {
  59                         Hashtable systemIcons = (Hashtable)AppDomain.CurrentDomain.GetData("SYSTEM_ICONS");
  60
  61                         if (systemIcons == null)
  62                         {
  63                                 systemIcons = LoadSystemIconsFromResource();
  64                                 AppDomain.CurrentDomain.SetData(SYSTEM_ICONS, systemIcons);
  65                         }
  66
  67                         return (Icon)systemIcons[iconName];
  68                 }
  69
  70                 private static Hashtable LoadSystemIconsFromResource()
  71                 {
  72                         string [] iconNames = {
  73                                                                         "Application", "Asterisk", "Error",
  74                                                                         "Exclamation", "Hand", "Information",
  75                                                                         "Question", "Warning", "WinLogo"
  76                                                                   };
  77
  78                         NameValueCollection config = (NameValueCollection) ConfigurationSettings.GetConfig ("system.drawing/icons");
  79                         Hashtable icons = new Hashtable(9);
  80
  81                         for (int i = 0; i < iconNames.Length; i++)
  82                                 icons.Add(iconNames[i], LoadIconFromResource( config[ iconNames[i] ] ));
  83
  84                         return icons;
  85                 }
  86
  87                 private static Icon LoadIconFromResource(string iconName)
  88                 {
  89                         Stream s;
  90                         try
  91                         {
  92                                 java.lang.ClassLoader cl = (java.lang.ClassLoader)
  93                                         AppDomain.CurrentDomain.GetData("GH_ContextClassLoader");
  94                                 if (cl == null)
  95                                         return null;
  96                                 java.io.InputStream inputStream = cl.getResourceAsStream(iconName);
  97                                 s = (Stream)vmw.common.IOUtils.getStream(inputStream);
  98                         }
  99                         catch (Exception e)
 100                         {
 101                                 return null;
 102                         }
 103                         return new Icon(new Bitmap(s));
 104                 }
 105         }
 106 }