private void MainWindow_MouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (mode == Mode.DragNode)
{
Point p = e.GetPosition(this.MasterCanvas);
curNode.X = p.X - nodeOffsetX;
curNode.Y = p.Y - nodeOffsetY;
curNode = null;
mode = Mode.None;
}
else if (mode == Mode.LinkConnectors)
{
Point p = e.GetPosition(this.MasterCanvas);
this.linkPts[2].X = p.X + 10;
this.linkPts[2].Y = p.Y;
this.linkPts[3].X = p.X;
this.linkPts[3].Y = p.Y;
this.linkFigure.StartPoint = this.linkPts[0];
this.linkSegment.Point1 = this.linkPts[1];
this.linkSegment.Point2 = this.linkPts[2];
this.linkSegment.Point3 = this.linkPts[3];
this.linkSegment.IsStroked = true;
this.linkPath.Visibility = Visibility.Hidden;
DispConnector connector = InConnector(p);
if (connector != null)
{
curConnector.ConnectTo(connector);
curConnector.Parent.Layout(curConnector.Parent.X, curConnector.Parent.Y);
connector.Parent.Layout(connector.Parent.X, connector.Parent.Y);
}
mode = Mode.None;
}
}
void UpdateConnectionLink(DispConnector owner, Line inputLine, Canvas inputCanvas, Line outputLine, Canvas outputCanvas)
{
this.pts[0] = inputCanvas.TranslatePoint(new System.Windows.Point(inputLine.X1, inputLine.Y1), VisualNode.MasterCanvas);
this.pts[1] = inputCanvas.TranslatePoint(new System.Windows.Point(inputLine.X1 - 50.0, inputLine.Y2), VisualNode.MasterCanvas);
this.pts[2] = outputCanvas.TranslatePoint(new System.Windows.Point(outputLine.X1 + 50.0, outputLine.Y1), VisualNode.MasterCanvas);
this.pts[3] = outputCanvas.TranslatePoint(new System.Windows.Point(outputLine.X1, outputLine.Y2), VisualNode.MasterCanvas);
owner.UpdateConnection();
}
public void ConnectTo(DispConnector connector)
{
DispConnector inputConnector = (IsInput) ? this : connector;
DispConnector outputConnector = (IsInput) ? connector : this;
if (inputConnector == outputConnector)
{
return;
}
if (inputConnector.Connections.Count == 0 || inputConnector.Connections[0] != outputConnector)
{
inputConnector.Connections.Clear();
inputConnector.Connections.Add(outputConnector);
outputConnector.Connections.Add(inputConnector);
}
}
private void MainWindow_MouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
Point p = e.GetPosition(this.MasterCanvas);
if (mode == Mode.None)
{
// Check if point is in node
foreach (var dispNode in dispGraph.dispNodes)
{
if (dispNode.PointInObject(p.X, p.Y))
{
curNode = dispNode;
nodeOffsetX = p.X - dispNode.X;
nodeOffsetY = p.Y - dispNode.Y;
mode = Mode.DragNode;
UpdateProperties(curNode);
break;
}
else
{
UpdateProperties(null);
// Check if in connector ring
curConnector = InConnectorList(p, dispNode.inputs);
if (curConnector == null)
{
curConnector = InConnectorList(p, dispNode.outputs);
}
if (curConnector != null)
{
curNode = curConnector.Parent;
mode = Mode.LinkConnectors;
this.linkPts[0].X = p.X;
this.linkPts[0].Y = p.Y;
this.linkPts[1].X = p.X - 10.0;
this.linkPts[1].Y = p.Y;
this.linkPts[2].X = p.X - 10.0;
this.linkPts[2].Y = p.Y;
this.linkPts[3].X = p.X - 10.0;
this.linkPts[3].Y = p.Y;
this.linkPath.Visibility = Visibility.Visible;
break;
}
}
}
}
}
private DispConnector InConnector(Point p)
{
foreach (var dispNode in dispGraph.dispNodes)
{
DispConnector connector = InConnectorList(p, dispNode.inputs);
if (connector != null)
{
return(connector);
}
connector = InConnectorList(p, dispNode.outputs);
if (connector != null)
{
return(connector);
}
}
return(null);
}