Icon.cs :  » GUI » wx-NET » wx » C# / CSharp Open Source

//-----------------------------------------------------------------------------
// wx.NET - Icon.cs
//
// The wxIcon wrapper class.
//
// Written by Jason Perkins (jason@379.com)
// (C) 2003 by 379, Inc.
// Licensed under the wxWidgets license, see LICENSE.txt for details.
//
// $Id: Icon.cs,v 1.10 2007/11/18 19:33:48 harald_meyer Exp $
//-----------------------------------------------------------------------------

using System;
using System.Reflection;
using System.Runtime.InteropServices;

namespace wx{
  public class Icon : Bitmap
  {
    [DllImport("wx-c")] static extern IntPtr wxIcon_ctor();
    [DllImport("wx-c")] static extern void   wxIcon_CopyFromBitmap(IntPtr self, IntPtr bitmap);
    [DllImport("wx-c")] static extern bool   wxIcon_LoadFile(IntPtr self, IntPtr name, BitmapType type);

    //---------------------------------------------------------------------

        /** CTor for ZipResource support.
         * This will load an image \c resourceName from ZipResource file or directory \c archiveName.
         * \code
         wx.ZipResource.AddCatalogLookupPrefix(@"..\Utils\MemLogDisplay");
         wx.Icon icon=new wx.Icon("archiveName.zrs", "iconname.png");
         \endcode
         */
        public Icon(string archiveName, string resourceName)
        {
            System.IO.Stream s=ZipResource.FindResource(archiveName, resourceName);
            if (s==null)
                throw new ArgumentException(string.Format("file 'zrs:{0}//{1}' not found", archiveName, resourceName));
            int length = (int)s.Length;
            byte[] buffer = new byte[length];
            s.Read(buffer, 0, length);
            Image img = new Image(buffer, BitmapType.wxBITMAP_TYPE_ANY);

            Bitmap bmp = new Bitmap(img);
            wxIcon_CopyFromBitmap(wxObject, bmp.wxObject);
        }

        /** This loads the icon from a local file.
         * Add a BitmapType to specify alternative ways of loading.
         */
    public Icon(string name)
      : this()
    {
      Image img = new Image();
            if (!img.LoadFile(name))
                throw new ArgumentException("file '" + name + "' not found");

      Bitmap bmp = new Bitmap(img);
      wxIcon_CopyFromBitmap(wxObject, bmp.wxObject);
    }

        /** Loads a bitmap of the provided type.
         * Use wx.BitmapType.wxBITMAP_TYPE_ANY if you have no information on the type
         * of the bitmap. Use wx.BitmapType.wxBITMAP_TYPE_RESOURCE to load a bitmap
         * from the .NET resource named \c name.
         */
        public Icon(string name, BitmapType type)
      : this()
    {
      if (type == BitmapType.wxBITMAP_TYPE_RESOURCE)
      {
        Assembly ResourceAssembly = Assembly.GetCallingAssembly();
        
        Image img = new Image(name, ResourceAssembly);
        
        Bitmap bmp = new Bitmap(img);
        wxIcon_CopyFromBitmap(wxObject, bmp.wxObject);
      }
      else
      {
                wxString wxName = wxString.SafeNew(name);
        if (!wxIcon_LoadFile(wxObject, Object.SafePtr(wxName), type))
          throw new ArgumentException();
      }
    }

    /** Convenience CTor for reading the resource of the provided name from the provided assembly.
     */
    public Icon(string resourceName, Assembly resourceAssembly)
      : this()
    {
      Bitmap bmp=new Bitmap(resourceName, resourceAssembly);
      wxIcon_CopyFromBitmap(wxObject, bmp.wxObject);
    }

    public Icon()
      : base(wxIcon_ctor())
    {
    }
    
    public Icon(IntPtr wxObject) 
      : base(wxObject) { }    

    //---------------------------------------------------------------------

    public void CopyFromBitmap(Bitmap bitmap)
    {
      wxIcon_CopyFromBitmap(wxObject, Object.SafePtr(bitmap));
    }

    //---------------------------------------------------------------------
  }
}