void ContentControl3D_Loaded(object sender, RoutedEventArgs e)
{
// Inject the ContentControl3D into the ViewModel object, so that it
// knows which control the RotateCommand should target.
ContentControl3D cc3D = sender as ContentControl3D;
ThingViewModel thing = cc3D.DataContext as ThingViewModel;
if (thing != null)
{
thing.CommandTarget = cc3D;
}
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
// This horrendous hack is necessary because the Content/BackContent of a ContentControl3D
// is a logical child of the ContentControl3D, not the ContentPresenters that host the content.
// In order to inform the Content/BackContent elements of which side they reside on, we must
// attach the IsOnFrontSide property value to them via a value converter that is set on the
// TemplateBinding of the ContentPresenters' Content property. If we do not do this, then the
// IsOnFrontSide property value does not get inherited by the elements shown in the control.
// This is important when BringIntoView is called on an element in the ContentControl3D and we
// need to figure out on which side of the control it exists. This workaround is only for
// the Content and BackContent, but not the elements created by the ContentTemplate or
// BackContentTemplate properties.
DependencyObject depObj = value as DependencyObject;
string side = parameter as string;
if (depObj != null && !String.IsNullOrEmpty(side))
{
bool?isOnFrontSide = side == "FRONT";
ContentControl3D.SetIsOnFrontSide(depObj, isOnFrontSide);
}
return(value);
}
void OnListBoxItemUnselected(object sender, RoutedEventArgs e)
{
// When the user brings a new ListBoxItem to the front of the 3D scene
// it becomes the selected item in the ListBox. At that time, we must
// verify that the previously selected item's front side is facing forward.
DependencyObject depObj = e.OriginalSource as DependencyObject;
while (depObj != null)
{
if (VisualTreeHelper.GetChildrenCount(depObj) == 0)
{
break;
}
depObj = VisualTreeHelper.GetChild(depObj, 0);
ContentControl3D cc3D = depObj as ContentControl3D;
if (cc3D != null)
{
cc3D.BringFrontSideIntoView();
break;
}
}
}
