import java.awt.*;

/** An improved variation of the Circle class that uses Java 1.1
 *  lightweight components instead of Canvas.
 *
 *  Taken from Core Web Programming from 
 *  Prentice Hall and Sun Microsystems Press,
 *  http://www.corewebprogramming.com/.
 *  © 2001 Marty Hall and Larry Brown;
 *  may be freely used or adapted. 
 */

public class BetterCircle extends Component {
  private Dimension preferredDimension;
  private int width, height;
  
  public BetterCircle(Color foreground, int radius) {
    setForeground(foreground);
    width = 2*radius;
    height = 2*radius;
    preferredDimension = new Dimension(width, height);
    setSize(preferredDimension);
  }

  public void paint(Graphics g) {
    g.setColor(getForeground());
    g.fillOval(0, 0, width, height);
  }

  public void setCenter(int x, int y) {
    setLocation(x - width/2, y - height/2);
  }

  /** Report the original size as the preferred size.
   *  That way, the BetterCircle doesn't get
   *  shrunk by layout managers.
   */
  
  public Dimension getPreferredSize() {
    return(preferredDimension);
  }

  /** Report same thing for minimum size as
   *  preferred size.
   */
  
  public Dimension getMinimumSize() {
    return(preferredDimension);
  }
}