public Diagram()
{
// Init the diagram logic, which handles all of the layout logic.
logic = new DiagramLogic();
logic.NodeClickHandler = new RoutedEventHandler(OnNodeClick);
// Can have an empty People collection when in design tools such as Blend.
if (logic.Family != null)
{
logic.Family.ContentChanged += new EventHandler <ContentChangedEventArgs>(OnFamilyContentChanged);
logic.Family.CurrentChanged += new EventHandler(OnFamilyCurrentChanged);
}
}
/// <summary>
/// Add a parent row to the diagram.
/// </summary>
private DiagramRow AddParentRow(DiagramRow row, double nodeScale)
{
// Get list of parents for the current row.
Collection <Person> parents = DiagramLogic.GetParents(row);
if (parents.Count == 0)
{
return(null);
}
// Add another row.
DiagramRow parentRow = logic.CreateParentRow(parents, nodeScale, nodeScale * Const.RelatedMultiplier);
parentRow.Margin = new Thickness(0, 0, 0, Const.RowSpace);
parentRow.GroupSpace = Const.ParentRowGroupSpace;
InsertRow(parentRow);
return(parentRow);
}
/// <summary>
/// Add a child row to the diagram.
/// </summary>
private DiagramRow AddChildRow(DiagramRow row)
{
// Get list of children for the current row.
List <Person> children = DiagramLogic.GetChildren(row);
if (children.Count == 0)
{
return(null);
}
// Add bottom space to existing row.
row.Margin = new Thickness(0, 0, 0, Const.RowSpace);
// Add another row.
DiagramRow childRow = logic.CreateChildrenRow(children, 1.0, Const.RelatedMultiplier);
childRow.GroupSpace = Const.ChildRowGroupSpace;
AddRow(childRow);
return(childRow);
}