Icon behavior in Jbuttons
// : c14:Faces.java
// Icon behavior in Jbuttons.
// <applet code=Faces width=400 height=100></applet>
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Faces extends JApplet {
private static Icon[] faces;
private JButton jb, jb2 = new JButton("Disable");
private boolean mad = false;
public void init() {
faces = new Icon[] {
new ImageIcon(getClass().getResource("Face0.gif")),
new ImageIcon(getClass().getResource("Face1.gif")),
new ImageIcon(getClass().getResource("Face2.gif")),
new ImageIcon(getClass().getResource("Face3.gif")),
new ImageIcon(getClass().getResource("Face4.gif")), };
jb = new JButton("JButton", faces[3]);
Container cp = getContentPane();
cp.setLayout(new FlowLayout());
jb.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (mad) {
jb.setIcon(faces[3]);
mad = false;
} else {
jb.setIcon(faces[0]);
mad = true;
}
jb.setVerticalAlignment(JButton.TOP);
jb.setHorizontalAlignment(JButton.LEFT);
}
});
jb.setRolloverEnabled(true);
jb.setRolloverIcon(faces[1]);
jb.setPressedIcon(faces[2]);
jb.setDisabledIcon(faces[4]);
jb.setToolTipText("Yow!");
cp.add(jb);
jb2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (jb.isEnabled()) {
jb.setEnabled(false);
jb2.setText("Enable");
} else {
jb.setEnabled(true);
jb2.setText("Disable");
}
}
});
cp.add(jb2);
}
public static void main(String[] args) {
run(new Faces(), 400, 200);
}
public static void run(JApplet applet, int width, int height) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(applet);
frame.setSize(width, height);
applet.init();
applet.start();
frame.setVisible(true);
}
} ///:~
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