public SequenceViewerEvent processMouseEvent(
     PairwiseRenderContext context, MouseEvent me, List path) {
   path.add(this);
   return renderer.processMouseEvent(getSubContext(context), me, path);
 }
 public void paint(Graphics2D g2, PairwiseRenderContext context) {
   renderer.paint(g2, getSubContext(context));
 }