private static void rotationDegreesChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ImagePanelView view = (ImagePanelView)d;
if (view.ImageScaleMode != ScaleMode.UNSCALED)
{
view.setScaleMode();
}
else
{
view.setLayoutTransform();
}
}
private static async void locationChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ImagePanelView view = (ImagePanelView)d;
// cancel previously running load requests
if (view.ImageLoadingTask != null && !view.ImageLoadingTask.IsCompleted)
{
view.TokenSource.Cancel();
try
{
await view.ImageLoadingTask;
}
catch (Exception)
{
}
}
view.TokenSource = new CancellationTokenSource();
view.Token = view.TokenSource.Token;
String location = (String)e.NewValue;
try
{
view.IsLoading = true;
//view.ImageLoadingTask = Task<BitmapSource>.Factory.StartNew(() => loadImage(location, view.Token), view.Token);
view.ImageLoadingTask = Task <BitmapImage> .Factory.StartNew(() => ImageUtils.loadImage(location, view.Token), view.Token);
await view.ImageLoadingTask;
view.pictureBox.Source = view.ImageLoadingTask.Result;
view.scrollViewer.ScrollToHorizontalOffset(0);
view.scrollViewer.ScrollToVerticalOffset(0);
view.setScaleMode();
}
catch (OperationCanceledException)
{
Logger.Log.Info("Cancelled loading image:" + (String)location);
}
catch (Exception ex)
{
Logger.Log.Error("Error loading image:" + (String)location, ex);
MessageBox.Show("Error loading image: " + location + "\n\n" + ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
finally
{
view.IsLoading = false;
}
}
private static void isLoadingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ImagePanelView view = (ImagePanelView)d;
bool isLoading = (bool)e.NewValue;
if (isLoading)
{
view.scrollViewer.Visibility = Visibility.Hidden;
view.loadingView.VisibilityAndAnimate = Visibility.Visible;
}
else
{
view.scrollViewer.Visibility = Visibility.Visible;
view.loadingView.VisibilityAndAnimate = Visibility.Collapsed;
}
}
private static void scaleModeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ImagePanelView view = (ImagePanelView)d;
view.setScaleMode();
}
private static void flipYChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ImagePanelView view = (ImagePanelView)d;
view.setLayoutTransform();
}
