public ConnectorAdorner( DesignerCanvas designer, Connector sourceConnector )
: base( designer )
{
myDesignerCanvas = designer;
mySourceConnector = sourceConnector;
myDrawingPen = new Pen( Brushes.LightSlateGray, 1 );
myDrawingPen.LineJoin = PenLineJoin.Round;
Cursor = Cursors.Cross;
}
public Connection( Connector source, Connector sink )
{
if ( source == null )
{
throw new ArgumentNullException( "source" );
}
if ( sink == null )
{
throw new ArgumentNullException( "sink" );
}
ID = Guid.NewGuid();
Source = source;
Sink = sink;
Unloaded += OnUnloaded;
}
private void OnDragStarted( object sender, DragStartedEventArgs e )
{
HitDesignerItem = null;
HitConnector = null;
myPathGeometry = null;
Cursor = Cursors.Cross;
myWasDotted = myConnection.IsDotted;
myConnection.StrokeDashArray = new DoubleCollection( new double[] { 1, 2 } );
if ( sender == mySourceDragThumb )
{
myFixConnector = myConnection.Sink;
myDragConnector = myConnection.Source;
}
else if ( sender == mySinkDragThumb )
{
myDragConnector = myConnection.Sink;
myFixConnector = myConnection.Source;
}
}
private void HitTesting( Point hitPoint )
{
bool hitConnectorFlag = false;
var hitObject = myDesignerCanvas.InputHitTest( hitPoint ) as DependencyObject;
while ( hitObject != null &&
hitObject != mySourceConnector.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;
}