import jalview.renderer.ScaleRenderer;
import jalview.renderer.ScaleRenderer.ScaleMark;
import jalview.util.MessageManager;
import jalview.renderer.ScaleRenderer;
import jalview.renderer.ScaleRenderer.ScaleMark;
import jalview.util.MessageManager;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;