static void OnPropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
string url = (string)e.NewValue;
if (url == null)
{
return;
}
AsyncImage img = d as AsyncImage;
if (img == null)
{
return;
}
img.Source = null;
WebClient client = new WebClient();
client.DownloadDataCompleted += OnImageReady;
//Muddafukka is slow.
ThreadPool.QueueUserWorkItem(a =>
{
try
{
client.DownloadDataAsync(new Uri(url), img);
client.Dispose();
}
catch
{
//TODO: Show no image thing.
}
});
}
static void OnImageReady(object sender, DownloadDataCompletedEventArgs e)
{
AsyncImage d = e.UserState as AsyncImage;
if (d == null)
{
return;
}
if (e.Error != null)
{
d.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback(a =>
{
d.Source = null;
d.Visibility = Visibility.Collapsed;
return(null);
}), null);
return;
}
byte[] data = e.Result;
if (data == null)
{
return;
}
d.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new DispatcherOperationCallback(a =>
{
MemoryStream stream = new MemoryStream(data);
BitmapImage imageSource = new BitmapImage();
imageSource.BeginInit();
imageSource.StreamSource = stream;
imageSource.EndInit();
d.Source = imageSource;
return(null);
}), null);
}
