/// <summary>
/// Creates a draggable zone that selects all nodes it contains.
/// </summary>
/// <param name="position">Zone start position.</param>
private void DragSelection(Rect position)
{
int controlID = GUIUtility.GetControlID (FocusType.Passive);
Event current = Event.current;
switch (current.GetTypeForControl (controlID)){
case EventType.MouseDown:{
if (position.Contains (current.mousePosition) && current.button == 0 && current.clickCount != 2 && !current.alt){
if(_linkingNode){
_linkingNode = false;
_nodeToLink = null;
}
GUIUtility.hotControl = controlID;
_dragStartPoint = current.mousePosition;
_oldSelection = new List<Node>();
_selection = new List<Node>();
_dragType = SelectionDragType.pick;
current.Use ();
}
break;
}
case EventType.MouseUp:{
if (GUIUtility.hotControl == controlID){
GUIUtility.hotControl = 0;
_oldSelection = new List<Node>();
this.UpdateUnitySelection ();
if(Selection.objects.Length == 0){
Selection.objects = new Object[1]{(_selected as MonoBehaviour).gameObject};
}
_dragType = SelectionDragType.None;
current.Use ();
}
break;
}
case EventType.MouseDrag:{
if (GUIUtility.hotControl == controlID){
_dragType = SelectionDragType.Rect;
_selection = new List<Node>();
_selection = GetNodesInSelectionRect (GetRectBetweenPoints(_dragStartPoint, current.mousePosition));
current.Use ();
}
break;
}
case EventType.KeyDown:{
if (_dragType != SelectionDragType.None && current.keyCode == KeyCode.Escape){
_selection = _oldSelection;
GUIUtility.hotControl = 0;
_dragType = SelectionDragType.None;
current.Use ();
}
break;
}
case EventType.Repaint:{
if (_dragType == SelectionDragType.Rect){
UnityEditor.Graphs.Styles.selectionRect.Draw (GetRectBetweenPoints(_dragStartPoint, current.mousePosition), false, false, false, false);
}
break;
}
}
}
/// <summary>
/// Resets important values for the AnyGraph window.
/// </summary>
private void Reset()
{
_zoomArea = new Rect();
_zoom = 1.0f;
_zoomCoordsOrigin = Vector2.zero;
_nodeDragDistance = new Vector2();
_initMousePos = new Vector2();
_scrollPos = new Vector2();
_graphExtents = new Rect();
_lastGraphExtents = new Rect();
_dragStartPoint = new Vector2();
_dragType = SelectionDragType.None;
_toolbarRect = new Rect();
_optionWindowScrollPos = new Vector2();
_initialDragNodePosition = new Dictionary<Node, Rect>();
_allNodePos = new List<Rect>();
_cachedNodes = new List<IAnyGraphNode>();
_selected = null;
_linkingNode = false;
_nodeToLink = null;
_allNodes = new List<Node>();
_selection = new List<Node>();
_oldSelection = new List<Node>();
_needRearrange = false;
_rearrange = null;
_searchString = "";
// Call on the garbage collector to free up resources.
System.GC.Collect ();
}
