mcs/class/System.Drawing/System.Drawing/ImageFormatConverter.cs

   1 //
   2 // System.Drawing.ImageFormatConverter.cs
   3 //
   4 // Author:
   5 //   Dennis Hayes (dennish@Raytek.com)
   6 //   Sanjay Gupta (gsanjay@novell.com)
   7 //
   8 // (C) 2002 Ximian, Inc
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.ComponentModel;
  36 using System.Globalization;
  37 using System.Drawing.Imaging;
  38
  39 namespace System.Drawing
  40 {
  41         /// <summary>
  42         /// Summary description for ImageFormatConverter.
  43         /// </summary>
  44         public class ImageFormatConverter : TypeConverter
  45         {
  46                 public ImageFormatConverter ()
  47                 {
  48                 }
  49
  50                 public override bool CanConvertFrom (ITypeDescriptorContext context, Type srcType)
  51                 {
  52                         if (srcType == typeof (string))
  53                                 return true;
  54                         else
  55                                 return false;
  56                 }
  57
  58                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destType)
  59                 {
  60                         if (destType == typeof (string))
  61                                 return true;
  62                         else
  63                                 return false;
  64                 }
  65
  66                 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object val)
  67                 {
  68                         string strFormat = val as string;
  69                         if (strFormat == null)
  70                                 return base.ConvertFrom (context, culture, val);
  71
  72                         if (strFormat.Equals (ImageFormat.Bmp.ToString ()))
  73                                 return ImageFormat.Bmp;
  74                         else if (strFormat.Equals (ImageFormat.Emf.ToString ()))
  75                                 return ImageFormat.Emf;
  76                         else if (strFormat.Equals (ImageFormat.Exif.ToString ()))
  77                                 return ImageFormat.Exif;
  78                         else if (strFormat.Equals (ImageFormat.Gif.ToString ()))
  79                                 return ImageFormat.Gif;
  80                         else if (strFormat.Equals (ImageFormat.Icon.ToString ()))
  81                                 return ImageFormat.Icon;
  82                         else if (strFormat.Equals (ImageFormat.Jpeg.ToString ()))
  83                                 return ImageFormat.Jpeg;
  84                         else if (strFormat.Equals (ImageFormat.MemoryBmp.ToString ()))
  85                                 return ImageFormat.MemoryBmp;
  86                         else if (strFormat.Equals (ImageFormat.Png.ToString ()))
  87                                 return ImageFormat.Png;
  88                         else if (strFormat.Equals (ImageFormat.Tiff.ToString ()))
  89                                 return ImageFormat.Tiff;
  90                         else if (strFormat.Equals (ImageFormat.Wmf.ToString ()))
  91                                 return ImageFormat.Wmf;
  92                         else
  93                                 throw new NotSupportedException ("ImageFormatConverter cannot convert from " + val.GetType ());
  94                 }
  95
  96                 public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object val, Type destType )
  97                 {
  98                         if ((val is ImageFormat) && (destType == typeof (string)))
  99                                 return val.ToString ();
 100
 101                         throw new NotSupportedException ("ImageFormatConverter can not convert from " + val.GetType ());
 102                 }
 103
 104                 [MonoTODO ("Implement")]
 105                 public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context )
 106                 {
 107                         throw new NotImplementedException ();
 108                 }
 109
 110                 public override bool GetStandardValuesSupported (ITypeDescriptorContext context )
 111                 {
 112                         return false;
 113                 }
 114         }
 115 }