private Tuple <Point, Size> GetSelected()
{
if (_selectionCell == null || _selectionListBox == null)
{
return(null);
}
var selected = (ListBoxItem)_selectionListBox.GetItemVisual(_selectionListBox.SelectedItem);
return(selected == null ? null : Tuple.Create(selected.TransformToAncestor(_selectionCell).Transform(new Point(0, 0)),
new Size(selected.ActualWidth / Math.Max(_selectionCell.ActualWidth, 1d), selected.ActualHeight / Math.Max(_selectionCell.ActualHeight, 1d))));
}
