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Blink.bsp
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1996-12-19
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94 lines
/*
* Copyright (c) 1994-1995 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
* without fee is hereby granted.
* Please refer to the file http://java.sun.com/copy_trademarks.html
* for further important copyright and trademark information and to
* http://java.sun.com/licensing.html for further important licensing
* information for the Java (tm) Technology.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
* THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
* CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
* PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
* NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
* SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
* SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
* PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). SUN
* SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
* HIGH RISK ACTIVITIES.
*/
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();
}
}
}