//
// System.Drawing.ImageFormatConverter.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.Drawing.Imaging;
using System.ComponentModel.Design.Serialization;
using System.Reflection;
namespace System.Drawing{
/// <summary>
/// Summary description for ImageFormatConverter.
/// </summary>
public class ImageFormatConverter : TypeConverter
{
public ImageFormatConverter ()
{
}
public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
{
if (sourceType == typeof (string))
return true;
return base.CanConvertFrom (context, sourceType);
}
public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
{
if (destinationType == typeof (string))
return true;
if (destinationType == typeof (InstanceDescriptor))
return true;
return base.CanConvertTo (context, destinationType);
}
public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
{
// we must be able to convert from short names and long names
string strFormat = (value as string);
if (strFormat == null) {
// case #1, this is not a string
return base.ConvertFrom (context, culture, value);
} else if (strFormat [0] == '[') {
// case #2, this is probably a long format (guid)
if (strFormat.Equals (ImageFormat.Bmp.ToString ()))
return ImageFormat.Bmp;
else if (strFormat.Equals (ImageFormat.Emf.ToString ()))
return ImageFormat.Emf;
else if (strFormat.Equals (ImageFormat.Exif.ToString ()))
return ImageFormat.Exif;
else if (strFormat.Equals (ImageFormat.Gif.ToString ()))
return ImageFormat.Gif;
else if (strFormat.Equals (ImageFormat.Icon.ToString ()))
return ImageFormat.Icon;
else if (strFormat.Equals (ImageFormat.Jpeg.ToString ()))
return ImageFormat.Jpeg;
else if (strFormat.Equals (ImageFormat.MemoryBmp.ToString ()))
return ImageFormat.MemoryBmp;
else if (strFormat.Equals (ImageFormat.Png.ToString ()))
return ImageFormat.Png;
else if (strFormat.Equals (ImageFormat.Tiff.ToString ()))
return ImageFormat.Tiff;
else if (strFormat.Equals (ImageFormat.Wmf.ToString ()))
return ImageFormat.Wmf;
} else {
// case #3, this is probably a short format
if (String.Compare (strFormat, "Bmp", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Bmp;
else if (String.Compare (strFormat, "Emf", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Emf;
else if (String.Compare (strFormat, "Exif", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Exif;
else if (String.Compare (strFormat, "Gif", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Gif;
else if (String.Compare (strFormat, "Icon", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Icon;
else if (String.Compare (strFormat, "Jpeg", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Jpeg;
else if (String.Compare (strFormat, "MemoryBmp", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.MemoryBmp;
else if (String.Compare (strFormat, "Png", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Png;
else if (String.Compare (strFormat, "Tiff", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Tiff;
else if (String.Compare (strFormat, "Wmf", true, CultureInfo.InvariantCulture) == 0)
return ImageFormat.Wmf;
}
// last case, this is an unknown string
return base.ConvertFrom (context, culture, value);
}
public override object ConvertTo (ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType )
{
if (value is ImageFormat) {
ImageFormat c = (ImageFormat) value;
string prop = null;
if (c.Guid.Equals (ImageFormat.Bmp.Guid))
prop = "Bmp";
else if (c.Guid.Equals (ImageFormat.Emf.Guid))
prop = "Emf";
else if (c.Guid.Equals (ImageFormat.Exif.Guid))
prop = "Exif";
else if (c.Guid.Equals (ImageFormat.Gif.Guid))
prop = "Gif";
else if (c.Guid.Equals (ImageFormat.Icon.Guid))
prop = "Icon";
else if (c.Guid.Equals (ImageFormat.Jpeg.Guid))
prop = "Jpeg";
else if (c.Guid.Equals (ImageFormat.MemoryBmp.Guid))
prop = "MemoryBmp";
else if (c.Guid.Equals (ImageFormat.Png.Guid))
prop = "Png";
else if (c.Guid.Equals (ImageFormat.Tiff.Guid))
prop = "Tiff";
else if (c.Guid.Equals (ImageFormat.Wmf.Guid))
prop = "Wmf";
if (destinationType == typeof (string)) {
return prop != null ? prop : c.ToString ();
} else if (destinationType == typeof (InstanceDescriptor)) {
if (prop != null){
return new InstanceDescriptor (typeof (ImageFormat).GetProperty (prop), null);
} else {
ConstructorInfo ctor = typeof(ImageFormat).GetConstructor (new Type[] {typeof(Guid)} );
return new InstanceDescriptor (ctor, new object[] {c.Guid});
}
}
}
return base.ConvertTo (context, culture, value, destinationType);
}
public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
{
ImageFormat[] list = new ImageFormat [10];
list [0] = ImageFormat.MemoryBmp;
list [1] = ImageFormat.Bmp;
list [2] = ImageFormat.Emf;
list [3] = ImageFormat.Wmf;
list [4] = ImageFormat.Gif;
list [5] = ImageFormat.Jpeg;
list [6] = ImageFormat.Png;
list [7] = ImageFormat.Tiff;
list [8] = ImageFormat.Exif;
list [9] = ImageFormat.Icon;
return new TypeConverter.StandardValuesCollection (list);
}
public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
{
return true;
}
}
}
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