code: private void paintHorizontalLine(Graphics2D g, JComponent c, int x, int y, int width, int height) {
          paintLine(g, width, height);
      }
docs: DOCUMENT ME!
  
  @param g      DOCUMENT ME!
  @param c      DOCUMENT ME!
  @param x      DOCUMENT ME!
  @param y      DOCUMENT ME!
  @param width  DOCUMENT ME!
  @param height DOCUMENT ME!