/// <summary>
/// Handles the <see cref="Control.MouseDoubleClick"/> event for a <see
/// cref="ListViewItem"/> of the "Image File" <see cref="ListView"/>.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="MouseButtonEventArgs"/> object containing event data.</param>
/// <remarks><para>
/// <b>OnFileActivate</b> shows an error message if the <see cref="ImageFile.Bitmap"/>
/// property of the double-clicked item in the "Image File" list view is a null reference.
/// </para><para>
/// Otherwise, <b>OnFileActivate</b> displays an independent form containing a <see
/// cref="ScrollViewer"/> that shows the image file bitmap.</para></remarks>
private void OnFileActivate(object sender, MouseButtonEventArgs args)
{
args.Handled = true;
// retrieve double-clicked item, if any
var source = args.OriginalSource as DependencyObject;
var item = ItemsControl.ContainerFromElement(FileList, source) as ListViewItem;
if (item == null)
{
return;
}
// retrieve corresponding image file, if any
ImageFile file = item.Content as ImageFile;
if (file == null)
{
return;
}
// abort if no image file bitmap present
if (file.Bitmap == null)
{
string message = String.Format(ApplicationInfo.Culture,
Global.Strings.DialogImageError, file.Path);
MessageBox.Show(MainWindow.Instance, message,
Global.Strings.TitleImageError, MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
Window window = null;
try {
// show image file bitmap in separate window
window = new ShowImage(file.Bitmap);
window.Title = file.Path;
window.Icon = MainWindow.Instance.Icon;
window.Show();
}
catch (Exception e) {
string message = String.Format(ApplicationInfo.Culture,
Global.Strings.DialogImageError, file.Path);
MessageDialog.Show(MainWindow.Instance, message,
Global.Strings.TitleImageError, e, MessageBoxButton.OK, Images.Error);
if (window != null)
{
window.Close();
}
}
}
protected void ShowImage(Texture img)
{
whiteboardImage.SetTexture(img);
whiteboardText.Hide();
whiteboardImage.Show();
}
