import java.awt.*;

public class ScrollingBanner extends AnimationApplet{

  protected String text;
  protected Font font = new java.awt.Font("Sans-serif", Font.BOLD, 24);
  protected int x, y;
  protected int offset = 1;
  protected Dimension d;

  public void init() {
      // get parameters "delay" and "text"
      String att = getParameter("delay");
    
      // set the delay of the animation
      if (att != null){
          setDelay(Integer.parseInt(att));
      }
      else{
          setDelay(100); // default value
      }
      
      // set the text to show
      att = getParameter("text");
      if (att != null) {
          text = att;
      }
      else {
          text = "Scrolling banner.";
      }

      // set initial position of the text
      d = getSize();
      x = d.width;
      y = font.getSize();
  }


  public void paint(Graphics g) {
    // get the font metrics to determine the length of the text
    g.setFont(font);
    FontMetrics fm = g.getFontMetrics();
    int length = fm.stringWidth(text);

    // adjust the position of text from the previous frame
    x -= offset;

    // if the text is completely off to the left end
    // move the position back to the right end

    if (x < -length)
      x = d.width;

    // set the pen color and draw the background
    g.setColor(Color.black);
    g.fillRect(0,0,d.width,d.height);

    // set the pen color, then draw the text
    g.setColor(Color.green);
    g.drawString(text, x, y);
  }
}