private void ShowCanvasContextMenu(object state) { Thread.Sleep(300); // put it on the UI thread to execute. Deployment.Current.Dispatcher.BeginInvoke(() => { if (!_mouseMovedWhileRMBDown) { CanvasContextMenu contextMenu = new CanvasContextMenu(_typeManager, MessageSender, Navigator, _currentMousePosition); ContextMenuService.SetContextMenu(this, contextMenu); contextMenu.IsOpen = true; contextMenu.HorizontalOffset = _currentMousePosition.X; contextMenu.VerticalOffset = _currentMousePosition.Y + 30; } }); }
public async Task OnMouseUp(MouseEventArgs e) { MouseDown = false; if (e.Button == 2) { RectSelection.Create = false; if (!e.CtrlKey && RectSelection.Width <= 0 && RectSelection.Height <= 0) { if (ObjectClicked.Right) { ObjectClicked.Right = false; ObjectContextMenu.Open(e.ClientX, e.ClientY); } else { if (GraphMode == GraphMode.Algorithm) { AlgorithmContextMenu.Open(e.ClientX, e.ClientY); } else { CanvasContextMenu.Open(e.ClientX, e.ClientY); origin[0] = e.ClientX; origin[1] = e.ClientY; if (ActiveGraph.Nodes.Any() || ActiveGraph.Edges.Any()) { await ActiveGraphChanged.InvokeAsync(new Graph()); } } } } else { bool aNodesChanged = false; bool aEdgesChanged = false; foreach (Node node in Graph.Nodes) { if (node.Xaxis <= RectSelection.X + RectSelection.Width && node.Xaxis >= RectSelection.X && node.Yaxis <= RectSelection.Y + RectSelection.Height && node.Yaxis >= RectSelection.Y) { if (!ActiveGraph.Nodes.Contains(node)) { ActiveGraph.Nodes.Add(node); aNodesChanged = true; } } else if (ActiveGraph.Nodes.Remove(node)) { aNodesChanged = true; } } foreach (Edge edge in Graph.Edges) { ShowEdge showEdge = new ShowEdge(edge); var x = 0.25 * edge.Head.Xaxis + 0.5 * showEdge.CurvePoint[0] + 0.25 * edge.Tail.Xaxis; var y = 0.25 * edge.Head.Yaxis + 0.5 * showEdge.CurvePoint[1] + 0.25 * edge.Tail.Yaxis; if (x <= RectSelection.X + RectSelection.Width && x >= RectSelection.X && y <= RectSelection.Y + RectSelection.Height && y >= RectSelection.Y) { if (!ActiveGraph.Edges.Contains(edge)) { ActiveGraph.Edges.Add(edge); aEdgesChanged = true; } } else if (ActiveGraph.Edges.Remove(edge)) { aEdgesChanged = true; } } if (aNodesChanged || aEdgesChanged) { await ActiveGraphChanged.InvokeAsync(ActiveGraph); } } RectSelection = new RectSelection(); return; } if (ObjectClicked.Left) { ObjectClicked.Left = false; if (GraphMode == GraphMode.InsertNode) { SvgClass = "pointer"; } else { SvgClass = "grab"; } } else if (!e.CtrlKey && !ActiveGraph.Nodes.Any() && !ActiveGraph.Nodes.Any() && GraphMode == GraphMode.InsertNode) { NodeService.AddNode(Graph.Nodes, Options.Default, e.ClientX * SVGControl.Scale + SVGControl.Xaxis, e.ClientY * SVGControl.Scale + SVGControl.Yaxis); } else if (ActiveGraph.Nodes.Any() || ActiveGraph.Edges.Any()) { await ActiveGraphChanged.InvokeAsync(new Graph()); } if (SVGControl.Pan) { SVGControl.Pan = false; SvgClass = "grab"; SVGControl.OldXaxis = SVGControl.Xaxis; SVGControl.OldYaxis = SVGControl.Yaxis; } }