public void FollowMouse(WeightedNodeControl selectedNode)
{
nodeToFollow = selectedNode;
timer.Elapsed += Timer_Elapsed;
timer.Start();
IsFollowingMouse = true;
}
public void StopFollowingMouse()
{
nodeToFollow = null;
timer.Stop();
timer.Elapsed -= Timer_Elapsed;
IsFollowingMouse = false;
}
private void newNodeButton_Click(object sender, RoutedEventArgs e)
{
if (WeightedNodeControl.IsFollowingMouse == false)
{
WeightedNodeControl weightedNodeControl = new WeightedNodeControl();
weightedNodeControl.PreviewMouseLeftButtonDown += WeightedNodeControl_PreviewMouseLeftButtonDown;
mainCanvas.Children.Add(weightedNodeControl);
isNewNode = true;
}
}
/// <summary>
/// Creates a LinkingLine that only has a source and can be linked to a new destination.
/// </summary>
/// <param name=""></param>
public LinkingLine(WeightedNodeControl source)
{
InitializeComponent();
this.source = source;
RequiresDestination = true;
source.AddLinkingLine(this);
timer.Interval = 5;
timer.AutoReset = true;
timer.Enabled = true;
}
private void LinkingLine_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (RequiresDestination)
{
if (ParentIsOfType((FrameworkElement)Mouse.DirectlyOver, typeof(WeightedNodeControl)))
{
WeightedNodeControl node = (WeightedNodeControl)GetParentControl((FrameworkElement)Mouse.DirectlyOver, typeof(WeightedNodeControl));
node.WasLinkedTo = true;
node.AddLinkingLine(this);
this.destination = node;
RequiresDestination = false;
((UIElement)Parent).PreviewMouseLeftButtonDown -= LinkingLine_PreviewMouseLeftButtonDown;
}
}
}
/// <summary>
/// Creates a LinkingLine that which already has a destination.
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
public LinkingLine(WeightedNodeControl source, WeightedNodeControl destination)
{
InitializeComponent();
this.source = source;
this.destination = destination;
source.AddLinkingLine(this);
destination.AddLinkingLine(this);
destination.PreviewMouseLeftButtonDown += Destination_PreviewMouseLeftButtonDown;
timer.Interval = 5;
timer.AutoReset = true;
timer.Enabled = true;
}
private void contextMenuNewPathButton_Click(object sender, RoutedEventArgs e)
{
WeightedNodeControl newNode = new WeightedNodeControl();
Canvas mainCanvas = (Canvas)this.Parent;
LinkingLine line = new LinkingLine(this, newNode);
line.X1 = Canvas.GetLeft(this) + (this.Width / 2);
line.Y1 = Canvas.GetTop(this) + (this.Height / 2);
mainCanvas.Children.Add(line);
mainCanvas.Children.Add(newNode);
Canvas.SetZIndex(line, 0);
Canvas.SetZIndex(newNode, 1);
wasContextMenuOptionSelected = true;
}
private void WeightedNodeControl_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (isNewNode == true)
{
WeightedNodeControl nodeControl = sender as WeightedNodeControl;
WeightedNodeControl newNode = new WeightedNodeControl();
isNewNode = false;
LinkingLine line = new LinkingLine(nodeControl, newNode);
line.X1 = Canvas.GetLeft(nodeControl) + (nodeControl.Width / 2);
line.Y1 = Canvas.GetTop(nodeControl) + (nodeControl.Height / 2);
mainCanvas.Children.Add(line);
mainCanvas.Children.Add(newNode);
Canvas.SetZIndex(line, 0);
Canvas.SetZIndex(nodeControl, 1);
Canvas.SetZIndex(newNode, 1);
}
}
