// simple number font drawer

import java.awt.*;
import java.applet.*;

public class NumberFont extends Object {
  Image numbers[];
  Applet applet;
  MediaTracker tracker;

  public NumberFont(Applet a, String dirName) {
    applet = a;

    tracker = new MediaTracker(a);
    // fetch the images
    numbers = new Image[10];
    for (int i = 0; i < 10; i++) {
      numbers[i] = a.getImage(a.getCodeBase(), dirName + "/" + i + ".gif");
      tracker.addImage(numbers[i], i);
    }

    try {
      tracker.waitForAll();
    } catch (InterruptedException e) {
    } finally {
      if (tracker.isErrorAny())
	System.out.println("Error while loading images");
    }
  }

  public int drawString(Graphics g, String s, int x, int y) {
    int kern = x;
    int length = s.length();

    for (int i = 0; i < length; i++) {
      Image glyph = numbers[s.charAt(i) - '0'];
      g.drawImage(glyph, kern, y, applet);
      kern += glyph.getWidth(applet);
    }
    return kern;
  }
}