Change look and feel for Swing application - Java Swing

Java examples for Swing:Look and Feel

Description

Change look and feel for Swing application

Demo Code

/*//from   ww  w  .j a  va 2s  .c o m
 * LookAndFeelDemo.java is a Java SE 6 example that requires
 * one other file (TestTheme.java).
 */
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.metal.*;
import javax.swing.plaf.*;
import javax.swing.plaf.metal.*;
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;

/**
 * This class describes a theme using "primary" colors.
 * You can change the colors to anything else you want.
 *
 * 1.9 07/26/04
 */
class TestTheme extends DefaultMetalTheme {

    public String getName() {
        return "Toms";
    }

    private final ColorUIResource primary1 = new ColorUIResource(255, 255,
            0);
    private final ColorUIResource primary2 = new ColorUIResource(0, 255,
            255);
    private final ColorUIResource primary3 = new ColorUIResource(255, 0,
            255);

    protected ColorUIResource getPrimary1() {
        return primary1;
    }

    protected ColorUIResource getPrimary2() {
        return primary2;
    }

    protected ColorUIResource getPrimary3() {
        return primary3;
    }

}

public class LookAndFeelDemo implements ActionListener {
    private static String labelPrefix = "Number of button clicks: ";
    private int numClicks = 0;
    final JLabel label = new JLabel(labelPrefix + "0    ");

    // Specify the look and feel to use by defining the LOOKANDFEEL constant
    // Valid values are: null (use the default), "Metal", "System", "Motif",
    // and "GTK"
    final static String LOOKANDFEEL = "Metal";

    // If you choose the Metal L&F, you can also choose a theme.
    // Specify the theme to use by defining the THEME constant
    // Valid values are: "DefaultMetal", "Ocean",  and "Test"
    final static String THEME = "Test";

    public Component createComponents() {
        JButton button = new JButton("I'm a Swing button!");
        button.setMnemonic(KeyEvent.VK_I);
        button.addActionListener(this);
        label.setLabelFor(button);

        /*
         * An easy way to put space between a top-level container
         * and its contents is to put the contents in a JPanel
         * that has an "empty" border.
         */
        JPanel pane = new JPanel(new GridLayout(0, 1));
        pane.add(button);
        pane.add(label);
        pane.setBorder(BorderFactory.createEmptyBorder(30, //top
                30, //left
                10, //bottom
                30) //right
        );

        return pane;
    }

    public void actionPerformed(ActionEvent e) {
        numClicks++;
        label.setText(labelPrefix + numClicks);
    }

    private static void initLookAndFeel() {
        String lookAndFeel = null;

        if (LOOKANDFEEL != null) {
            if (LOOKANDFEEL.equals("Metal")) {
                lookAndFeel = UIManager
                        .getCrossPlatformLookAndFeelClassName();
                //  an alternative way to set the Metal L&F is to replace the 
                // previous line with:
                // lookAndFeel = "javax.swing.plaf.metal.MetalLookAndFeel";

            }

            else if (LOOKANDFEEL.equals("System")) {
                lookAndFeel = UIManager.getSystemLookAndFeelClassName();
            }

            else if (LOOKANDFEEL.equals("Motif")) {
                lookAndFeel = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
            }

            else if (LOOKANDFEEL.equals("GTK")) {
                lookAndFeel = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
            }

            else {
                System.err
                        .println("Unexpected value of LOOKANDFEEL specified: "
                                + LOOKANDFEEL);
                lookAndFeel = UIManager
                        .getCrossPlatformLookAndFeelClassName();
            }

            try {

                UIManager.setLookAndFeel(lookAndFeel);

                // If L&F = "Metal", set the theme

                if (LOOKANDFEEL.equals("Metal")) {
                    if (THEME.equals("DefaultMetal"))
                        MetalLookAndFeel
                                .setCurrentTheme(new DefaultMetalTheme());
                    else if (THEME.equals("Ocean"))
                        MetalLookAndFeel.setCurrentTheme(new OceanTheme());
                    else
                        MetalLookAndFeel.setCurrentTheme(new TestTheme());

                    UIManager.setLookAndFeel(new MetalLookAndFeel());
                }

            }

            catch (ClassNotFoundException e) {
                System.err
                        .println("Couldn't find class for specified look and feel:"
                                + lookAndFeel);
                System.err
                        .println("Did you include the L&F library in the class path?");
                System.err.println("Using the default look and feel.");
            }

            catch (UnsupportedLookAndFeelException e) {
                System.err
                        .println("Can't use the specified look and feel ("
                                + lookAndFeel + ") on this platform.");
                System.err.println("Using the default look and feel.");
            }

            catch (Exception e) {
                System.err.println("Couldn't get specified look and feel ("
                        + lookAndFeel + "), for some reason.");
                System.err.println("Using the default look and feel.");
                e.printStackTrace();
            }
        }
    }

    /**
     * Create the GUI and show it.  For thread safety,
     * this method should be invoked from the
     * event dispatch thread.
     */
    private static void createAndShowGUI() {
        //Set the look and feel.
        initLookAndFeel();

        //Make sure we have nice window decorations.
        JFrame.setDefaultLookAndFeelDecorated(true);

        //Create and set up the window.
        JFrame frame = new JFrame("SwingApplication");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        LookAndFeelDemo app = new LookAndFeelDemo();
        Component contents = app.createComponents();
        frame.getContentPane().add(contents, BorderLayout.CENTER);

        //Display the window.
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        //Schedule a job for the event dispatch thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions 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.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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