// captures a snapshot of the given presenter to a cached bitmap
private Image _captureSnapshot(ContentPresenter presenter, bool hidePresenter) {
if (hidePresenter) presenter.Visibility = Visibility.Hidden;
var content = presenter.Content as FrameworkElement;
if (content == null) return null;
// force full layout and capture snapshot
presenter.ApplyTemplate();
presenter.UpdateLayout();
return new Image {
Source = ImageServices.CaptureSnapshot(content)
};
}
internal ContentPresenter CreateChildContentPresenter(object item)
{
if (item == null)
return null;
ContentPresenter cp = FindChildContentPresenter(item);
if (cp != null)
return cp;
// the actual child to be added. cp.Tag is a reference to the TabItem
cp = new ContentPresenter();
cp.Content = (item is TabItem) ? (item as TabItem).Content : item;
cp.ContentTemplate = this.SelectedContentTemplate;
cp.ContentTemplateSelector = this.SelectedContentTemplateSelector;
cp.ContentStringFormat = this.SelectedContentStringFormat;
cp.Visibility = System.Windows.Visibility.Collapsed;
cp.Tag = (item is TabItem) ? item : (this.ItemContainerGenerator.ContainerFromItem(item));
ItemsHolderPanel.Children.Add(cp);
cp.ApplyTemplate();
return cp;
}
