// // 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 description for ImageConverter. /// 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 == null) return "(none)"; if (val is System.Drawing.Image) { if (destType == typeof (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 (); } } string msg = Locale.GetText ("ImageConverter can not convert from type '{0}'.", val.GetType ()); throw new NotSupportedException (msg); } public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context, object val, Attribute[] attribs) { return TypeDescriptor.GetProperties (typeof (Image), attribs); } public override bool GetPropertiesSupported (ITypeDescriptorContext context ) { return true; } } }