public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
byte[] content = value as byte[];
if (content != null)
{
BitmapImage source = new BitmapImage();
source.SetSource(new MemoryStream(content));
return source;
}
Uri uri = new UriConverter().Convert(value, targetType, parameter, culture) as Uri;
if (uri != null)
{
string extensions = uri.ToString();
if (StringComparer.OrdinalIgnoreCase.Compare(System.IO.Path.GetExtension(extensions), ".xaml") == 0)
{
var brush = new BitmapImage();
var stream = Application.GetResourceStream(uri);
if (stream != null)
{
// Load from application resources
content = new byte[stream.Stream.Length];
stream.Stream.Read(content, 0, content.Length);
SetSourceFromXaml(brush, System.Text.Encoding.UTF8.GetString(content, 0, content.Length));
}
else
{
// Load from web
WebClient wc = new WebClient();
wc.DownloadStringCompleted += (s, e) =>
{
if (e.Error == null && !e.Cancelled)
{
SetSourceFromXaml(brush, e.Result);
}
};
wc.DownloadStringAsync(uri);
}
return brush;
}
else
{
return new BitmapImage(uri);
}
}
return value;
}
public void TestConvertBackRelative()
{
string relative = "default.aspx";
Uri relativeUri = new Uri(relative, UriKind.RelativeOrAbsolute);
UriConverter converter = new UriConverter();
object result = converter.ConvertBack(relativeUri, typeof(string), null, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual(relativeUri.ToString(), (string)result);
result = converter.ConvertBack(relativeUri, typeof(Uri), null, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(Uri));
Assert.AreEqual(relativeUri.ToString(), ((Uri)result).ToString());
}
public void TestConvertBackAbsolute()
{
string absolute = "http://www.SLExtensions.Controls.com";
Uri absoluteUri = new Uri(absolute);
UriConverter converter = new UriConverter();
object result = converter.ConvertBack(absoluteUri, typeof(string), null, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual(absoluteUri.ToString(), (string)result);
result = converter.ConvertBack(absoluteUri, typeof(Uri), null, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(Uri));
Assert.AreEqual(absoluteUri.ToString(), ((Uri)result).ToString());
}
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
string strValue = value as string;
Uri uri;
if (!string.IsNullOrEmpty(strValue))
{
uri = new Uri(strValue, UriKind.RelativeOrAbsolute);
}
else if ((uri = value as Uri) != null)
{
uri = new UriConverter().Convert(value, targetType, parameter, culture) as Uri;
}
else
return value;
return new DeepZoomImageTileSource(uri);
}
public void TestConvertBackRelativeWithParamUri()
{
Uri resultUri = new Uri("default.aspx", UriKind.RelativeOrAbsolute);
Uri sourceUri = new Uri("http://www.SLExtensions.Controls.com/default.aspx");
UriConverter converter = new UriConverter();
Uri param = new Uri("http://www.SLExtensions.Controls.com");
object result = converter.ConvertBack(sourceUri, typeof(string), param, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(string));
Assert.AreEqual(resultUri.ToString(), (string)result);
result = converter.ConvertBack(sourceUri, typeof(Uri), param, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(Uri));
Assert.AreEqual(resultUri.ToString(), ((Uri)result).ToString());
}
public void TestConvertDirectRelativeWithParamString()
{
string relative = "default.aspx";
Uri relativeUri = new Uri(relative, UriKind.RelativeOrAbsolute);
Uri resultUri = new Uri("http://www.SLExtensions.Controls.com/default.aspx");
UriConverter converter = new UriConverter();
string paramString = "http://www.SLExtensions.Controls.com";
object result = converter.Convert(relative, typeof(Uri), paramString, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(Uri));
Assert.AreEqual(resultUri.ToString(), ((Uri)result).ToString());
result = converter.Convert(relativeUri, typeof(Uri), paramString, CultureInfo.CurrentCulture);
Assert.IsInstanceOfType(result, typeof(Uri));
Assert.AreEqual(resultUri.ToString(), ((Uri)result).ToString());
}