private void RunBackgroundAddIn()
{
// Do the work.
var changedPixels = _addin.ProcessImageBytes(_originalPixels);
// Update the UI on the UI thread.
Dispatcher.BeginInvoke(DispatcherPriority.Normal,
(ThreadStart) delegate
{
var newSource = BitmapSource.Create(
_originalSource.PixelWidth,
_originalSource.PixelHeight,
_originalSource.DpiX,
_originalSource.DpiY,
_originalSource.Format,
_originalSource.Palette,
changedPixels,
_stride);
ImageToProcess.Source = newSource;
AddInProcessProgressBar.Value = 0;
// Release the add-in (it's a member variable now,
// so this step is explicit).
_addin = null;
}
);
}
private void OnProcessImage(object sender, RoutedEventArgs e)
{
var token = (AddInToken)AddInListBox.SelectedItem;
_addIn = token.Activate <ImageProcessorHostView>(AddInSecurityLevel.Host);
var streamResourceInfo = Application.GetResourceStream(new Uri("Forest.jpg", UriKind.RelativeOrAbsolute));
if (streamResourceInfo != null)
{
var imageStream = streamResourceInfo.Stream;
AddInBorder.Child = _addIn.GetVisual(imageStream);
}
}
private void OnProcessImage(object sender, RoutedEventArgs e)
{
// Get the byte array ready.
_originalSource = (BitmapSource)ImageToProcess.Source;
_stride = _originalSource.PixelWidth * _originalSource.Format.BitsPerPixel / 8;
_stride = _stride + _stride % 4 * 4;
_originalPixels = new byte[_stride * _originalSource.PixelHeight * _originalSource.Format.BitsPerPixel / 8];
_originalSource.CopyPixels(_originalPixels, _stride, 0);
// Start the add-in.
var token = (AddInToken)AddInListBox.SelectedItem;
_addin = token.Activate <ImageProcessorHostView>(AddInSecurityLevel.Internet);
_addin.Initialize(_automationHost);
// Launch the image processing work on a separate thread.
var thread = new Thread(RunBackgroundAddIn);
thread.Start();
}
