public ConnectorAdorner(DesignerCanvas designer, Connector sourceConnector)
: base(designer)
{
this.designerCanvas = designer;
this.sourceConnector = sourceConnector;
drawingPen = new Pen(Brushes.LightSlateGray, 1);
drawingPen.LineJoin = PenLineJoin.Round;
this.Cursor = Cursors.Cross;
}
void thumbDragThumb_DragStarted(object sender, DragStartedEventArgs e)
{
this.HitDesignerItem = null;
this.HitConnector = null;
this.pathGeometry = null;
this.Cursor = Cursors.Cross;
this.connection.StrokeDashArray = new DoubleCollection(new double[] { 1, 2 });
if (sender == sourceDragThumb)
{
fixConnector = connection.Sink;
dragConnector = connection.Source;
}
else if (sender == sinkDragThumb)
{
dragConnector = connection.Sink;
fixConnector = connection.Source;
}
}
private void HitTesting(Point hitPoint)
{
bool hitConnectorFlag = false;
DependencyObject hitObject = designerCanvas.InputHitTest(hitPoint) as DependencyObject;
while (hitObject != null &&
hitObject != sourceConnector.ParentDesignerItem &&
hitObject.GetType() != typeof(DesignerCanvas))
{
if (hitObject is Connector)
{
HitConnector = hitObject as Connector;
hitConnectorFlag = true;
}
if (hitObject is DesignerItem)
{
HitDesignerItem = hitObject as DesignerItem;
if (!hitConnectorFlag)
HitConnector = null;
return;
}
hitObject = VisualTreeHelper.GetParent(hitObject);
}
HitConnector = null;
HitDesignerItem = null;
}
public Connection(Connector source, Connector sink)
{
this.ID = Guid.NewGuid();
this.Source = source;
this.Sink = sink;
this.DefaultPath = true;
base.Unloaded += new RoutedEventHandler(Connection_Unloaded);
}