/// <summary>
/// Create a <see cref="NSImage"/> from a stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <returns>An autoreleased <see cref="NSImage"/> instance</returns>
public static NSImage ImageFromStream(Stream stream)
{
NSImage result = null;
if (stream != null)
{
byte[] buffer = new byte[stream.Length];
stream.Read(buffer, 0, (int)stream.Length);
NSData data = new NSData(buffer);
result = new NSImage(data);
data.Release();
result.Autorelease();
}
return result;
}
/// <summary>
/// Converts the given object to the type of this converter, using the specified context and culture information.
/// </summary>
/// <param name="context">An <see cref="T:System.ComponentModel.ITypeDescriptorContext"/> that provides a format context.</param>
/// <param name="culture">The <see cref="T:System.Globalization.CultureInfo"/> to use as the current culture.</param>
/// <param name="value">The <see cref="T:System.Object"/> to convert.</param>
/// <returns>
/// An <see cref="T:System.Object"/> that represents the converted value.
/// </returns>
/// <exception cref="T:System.NotSupportedException">
/// The conversion cannot be performed.
/// </exception>
public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
{
// As pool are scoped, it does not hurt if we create ours during the method call.
using (NSAutoreleasePool pool = new NSAutoreleasePool()) {
byte[] rawData = value as byte[];
if (rawData == null) {
return base.ConvertFrom (context, culture, value);
}
// The image creation will be based on a NSData instance that wraps the byte array
NSData data = new NSData (rawData);
NSImage image = new NSImage (data);
data.Release ();
return image; // TODO: Find a way to avoid the memory leak as we do not release the instance...
}
}