internal DiagramItem(Diagram diagram)
{
_diagram = diagram;
_label = null;
_drawer = null;
_geometry = null;
_border = null;
NeedRecalc = true;
IsSelectable = true;
}
protected void CalculateGeometry(IDiagramItemDrawer drawer)
{
if (drawer == null)
return;
if (NeedRecalc == false)
return;
_geometry = drawer.CalculateGeometry(this);
_border = drawer.CalculateBorder(this);
NeedRecalc = false;
}
public Diagram()
{
_nodes = new DiagramNodes(this);
_edges = new DiagramEdges(this);
_selection = new DiagramSelection(this);
_itemsInDrawingOrder = new DiagramItemCollection<DiagramItem>(this);
_nodes.CollectionChanged += NodeCollectionChanged;
_edges.CollectionChanged += EdgeCollectionChanged;
_selection.CollectionChanged += SelectionChanged;
Background = new SolidColorBrush(Colors.Transparent);
_defaultNodeDrawer = new RectangleNodeDrawer();
_defaultEdgeDrawer = new LineEdgeDrawer();
//DefaultLabelDrawer = new BaseLabelDrawer();
_placedItems = new ObservableCollection<IDiagramPlacedItem>();
_placedItems.CollectionChanged += new NotifyCollectionChangedEventHandler(CustomChilren_CollectionChanged);
_mouseManager = new DiagramMouseManager(this);
_mouseManager.LabelLButtonDblClick += new LabelEventHandler(OnLabelLButtonDblClick);
_mouseManager.NodeLButtonDblClick += new NodeEventHandler(OnNodeLButtonDblClick);
_mouseManager.EdgeLButtonDblClick += new EdgeEventHandler(OnEdgeLButtonDblClick);
_viewport = null;
_boundaries = null;
CalculateBoundaries();
LockRender = false;
LockRecalc = false;
_scrollViewer = null;
}
