// hokey subclass, specific to this application
//   restricts image to fixed width integers
//   always pads to draw length "digits"
//   assumes white background for glyphs

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

public class FixedNumberFont extends NumberFont {
  int padding;					  // left/right padding
  int stringWidth, glyphWidth, glyphHeight;
  int digits;

  public FixedNumberFont(Applet a, String dirName, int d, int pad) {
    super(a, dirName);

    digits = d;
    padding = pad;
    glyphWidth = numbers[0].getWidth(a);
    glyphHeight = numbers[0].getHeight(a);
    stringWidth = digits * glyphWidth + 2 * padding;
  }

  public int getWidth() {
    return stringWidth;
  }

  public int getHeight() {
    return glyphHeight;
  }
      
  public int drawNumber(Graphics g, int n, int x, int y) {
    // draw left padding
    g.setColor(Color.white);
    g.fillRect(x, y, padding, glyphHeight);
    // create a fixed length string, draw it
    String s;
    if (n < 0) {
      System.out.println("Negative number " + n);
      n = 0;
    }
    s = Integer.toString(n);
    while (s.length() < digits)
      s = "0" + s;				  // make lots of garbage
    int kern = super.drawString(g, s, x + padding, y);

    // draw right padding
    g.fillRect(kern, y, padding, glyphHeight);

    return stringWidth;
  }
}