public NodeGraphView(GraphTypeMetadata graphTypeMetadata)
{
styleSheets.Add(Resources.Load <StyleSheet>(ResourceAssetPaths.NodeGraphView_StyleSheet));
SetupZoom(ContentZoomer.DefaultMinScale, ContentZoomer.DefaultMaxScale);
CustomContentDragger customContentDragger = new CustomContentDragger();
this.AddManipulator(customContentDragger);
SecondarySelectionDragger secondarySelectionDragger = new SecondarySelectionDragger();
this.AddManipulator(secondarySelectionDragger); // Order here matters because the SecondarySelectionDragger allows the event to propagate
this.AddManipulator(new SelectionDragger());
this.AddManipulator(new RectangleSelector());
// Grid lines
m_gridBackground = new GridBackground();
Insert(0, m_gridBackground);
m_gridBackground.StretchToParentSize();
// Minimap
m_miniMap = new MiniMap {
anchored = true
};
m_miniMap.SetPosition(new Rect(0, 0, 200, 200));
this.RegisterCallback <GeometryChangedEvent>((GeometryChangedEvent evt) => { m_miniMap.SetPosition(new Rect(evt.newRect.xMax - 210, evt.newRect.yMax - 210, 200, 200)); });
Add(m_miniMap);
GraphTypeMetadata = graphTypeMetadata;
m_nodeCreationWindow = ScriptableObject.CreateInstance <NodeCreationWindow>();
m_nodeCreationWindow.Setup(this, GraphTypeMetadata);
nodeCreationRequest = context =>
{
SearchWindow.Open(new SearchWindowContext(context.screenMousePosition, 0, 0), m_nodeCreationWindow);
};
graphViewChanged += OnGraphViewChanged;
m_edgeConectorListener = new EdgeConnectorListener(this);
serializeGraphElements += CopyAndSerializeGraphElements;
unserializeAndPaste += UnserializeAndPasteGraphElements;
canPasteSerializedData += CanUnserializeAndPaste;
RegisterCallback <MouseMoveEvent>(x => { m_mousePosition = x.localMousePosition; });
RegisterCallback <MouseUpEvent>(x => { OnMouseClick?.Invoke(); });
Undo.undoRedoPerformed += () => { SetNodeCollection(NodeGraph); };
m_graphAxesController = new GraphAxesController(this, customContentDragger, secondarySelectionDragger);
Add(m_graphAxesController);
m_graphAxesController.PlaceBehind(contentViewContainer);
m_graphAxesController.SetEnable(true);
}
public GraphAxesController(NodeGraphView nodeGraphView, CustomContentDragger contentDragger, SecondarySelectionDragger secondarySelectionDragger)
{
this.name = "graph-axes-controller";
m_nodeGraphView = nodeGraphView;
m_customContentDragger = contentDragger;
m_secondarySelectionDragger = secondarySelectionDragger;
m_xAxis = new GraphAxis();
m_yAxis = new GraphAxis();
VisualElement graphViewContent = m_nodeGraphView.Q <VisualElement>("contentViewContainer");
Add(m_xAxis);
Add(m_yAxis);
RefreshPositions();
m_nodeGraphView.RegisterCallback <GeometryChangedEvent>(RefreshSizes);
m_nodeGraphView.viewTransformChanged += RefreshPositions;
m_customContentDragger.PositionChanged += RefreshPositions;
m_secondarySelectionDragger.OnDragging += RefreshPositions; // TODO: This is a hack to get the axes to update when moving nodes around. But it still doesn't work perfectly.
}
