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Java Source | 1996-11-11 | 1.7 KB | 69 lines |
- /*
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- */
-
- import java.awt.*;
- import java.util.StringTokenizer;
-
- /**
- * I love blinking things.
- *
- * @author Arthur van Hoff
- */
- public class blink extends java.applet.Applet implements Runnable {
- Thread blinker;
- String lbl;
- Font font;
- int speed;
-
- public void init() {
- font = new java.awt.Font("TimesRoman", Font.PLAIN, 24);
- String att = getParameter("speed");
- speed = (att == null) ? 400 : (1000 / Integer.valueOf(att).intValue());
- att = getParameter("lbl");
- lbl = (att == null) ? "Blink" : att;
- }
-
- public void paint(Graphics g) {
- int x = 0, y = font.getSize(), space;
- int red = (int)(Math.random() * 50);
- int green = (int)(Math.random() * 50);
- int blue = (int)(Math.random() * 256);
- Dimension d = size();
-
- g.setColor(Color.black);
- g.setFont(font);
- FontMetrics fm = g.getFontMetrics();
- space = fm.stringWidth(" ");
- for (StringTokenizer t = new StringTokenizer(lbl) ; t.hasMoreTokens() ; ) {
- String word = t.nextToken();
- int w = fm.stringWidth(word) + space;
- if (x + w > d.width) {
- x = 0;
- y += font.getSize();
- }
- if (Math.random() < 0.5) {
- g.setColor(new java.awt.Color((red + y * 30) % 256, (green + x / 3) % 256, blue));
- } else {
- g.setColor(Color.lightGray);
- }
- g.drawString(word, x, y);
- x += w;
- }
- }
-
- public void start() {
- blinker = new Thread(this);
- blinker.start();
- }
- public void stop() {
- blinker.stop();
- }
- public void run() {
- while (true) {
- try {Thread.currentThread().sleep(speed);} catch (InterruptedException e){}
- repaint();
- }
- }
- }
-