Custom Icon Demo
/*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
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* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
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* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.AbstractButton;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
public class CustomIconDemo extends JPanel implements ActionListener {
protected JButton b1, b2, b3;
public CustomIconDemo() {
Icon leftButtonIcon = new ArrowIcon(SwingConstants.RIGHT);
Icon middleButtonIcon = new ImageIcon("images/middle.gif");
Icon rightButtonIcon = new ArrowIcon(SwingConstants.LEFT);
b1 = new JButton("Disable middle button", leftButtonIcon);
b1.setVerticalTextPosition(AbstractButton.CENTER);
b1.setHorizontalTextPosition(AbstractButton.LEFT);
b1.setMnemonic(KeyEvent.VK_D);
b1.setActionCommand("disable");
b2 = new JButton("Middle button", middleButtonIcon);
b2.setVerticalTextPosition(AbstractButton.BOTTOM);
b2.setHorizontalTextPosition(AbstractButton.CENTER);
b2.setMnemonic(KeyEvent.VK_M);
b3 = new JButton("Enable middle button", rightButtonIcon);
//Use the default text position of CENTER, RIGHT.
b3.setMnemonic(KeyEvent.VK_E);
b3.setActionCommand("enable");
b3.setEnabled(false);
//Listen for actions on buttons 1 and 3.
b1.addActionListener(this);
b3.addActionListener(this);
b1.setToolTipText("Click this button to disable the middle button.");
b2.setToolTipText("This middle button does nothing when you click it.");
b3.setToolTipText("Click this button to enable the middle button.");
//Add Components to this container, using the default FlowLayout.
add(b1);
add(b2);
add(b3);
}
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("disable")) {
b2.setEnabled(false);
b1.setEnabled(false);
b3.setEnabled(true);
} else {
b2.setEnabled(true);
b1.setEnabled(true);
b3.setEnabled(false);
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("CustomIconDemo");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.getContentPane().add(new CustomIconDemo(), BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
}
class ArrowIcon implements Icon, SwingConstants {
private int width = 9;
private int height = 18;
private int[] xPoints = new int[4];
private int[] yPoints = new int[4];
public ArrowIcon(int direction) {
if (direction == LEFT) {
xPoints[0] = width;
yPoints[0] = -1;
xPoints[1] = width;
yPoints[1] = height;
xPoints[2] = 0;
yPoints[2] = height / 2;
xPoints[3] = 0;
yPoints[3] = height / 2 - 1;
} else /* direction == RIGHT */{
xPoints[0] = 0;
yPoints[0] = -1;
xPoints[1] = 0;
yPoints[1] = height;
xPoints[2] = width;
yPoints[2] = height / 2;
xPoints[3] = width;
yPoints[3] = height / 2 - 1;
}
}
public int getIconHeight() {
return height;
}
public int getIconWidth() {
return width;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
int length = xPoints.length;
int adjustedXPoints[] = new int[length];
int adjustedYPoints[] = new int[length];
for (int i = 0; i < length; i++) {
adjustedXPoints[i] = xPoints[i] + x;
adjustedYPoints[i] = yPoints[i] + y;
}
if (c.isEnabled()) {
g.setColor(Color.black);
} else {
g.setColor(Color.gray);
}
g.fillPolygon(adjustedXPoints, adjustedYPoints, length);
}
}
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