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//
// System.Drawing.ImageConverter.cs
//
// Author:
// Dennis Hayes (dennish@Raytek.com)
// Sanjay Gupta (gsanjay@novell.com)
//
// (C) 2002 Ximian, Inc
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.ComponentModel;
using System.Globalization;
using System.IO;
using System.Drawing.Imaging;
namespace System.Drawing
{
/// <summary>
/// Summary description for ImageConverter.
/// </summary>
public class ImageConverter : TypeConverter
{
public ImageConverter ()
{
}
public override bool CanConvertFrom (ITypeDescriptorContext context, Type srcType)
{
if (srcType == typeof (System.Byte[]))
return true;
else
return false;
}
public override bool CanConvertTo (ITypeDescriptorContext context, Type destType)
{
if ((destType == typeof (System.Byte[])) || (destType == typeof (System.String)))
return true;
else
return false;
}
public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object val)
{
byte [] bytes = val as byte [];
if (bytes == null)
return base.ConvertFrom (context, culture, val);
MemoryStream ms = new MemoryStream (bytes);
return Image.FromStream (ms);
}
public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object val, Type destType )
{
if ((val is System.Drawing.Image) && (destType == typeof (System.String)))
return val.ToString ();
else if (CanConvertTo (null, destType)){
//came here means destType is byte array ;
MemoryStream ms = new MemoryStream ();
((Image)val).Save (ms, ((Image)val).RawFormat);
return ms.GetBuffer ();
}else
return new NotSupportedException ("ImageConverter can not convert from " + val.GetType ());
}
public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context, object val, Attribute[] attribs)
{
return TypeDescriptor.GetProperties (typeof (Image), attribs);
}
public override bool GetPropertiesSupported (ITypeDescriptorContext context )
{
return true;
}
}
}
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