import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import javax.swing.colorchooser.*; /* * ColorChooserDemo2.java is a 1.4 application that requires these files: * CrayonPanel.java * images/red.gif * images/yellow.gif * images/green.gif * images/blue.gif */ public class ColorChooserDemo2 extends JPanel implements ActionListener, ChangeListener { public JLabel banner; public JColorChooser tcc; public ColorChooserDemo2() { super(new BorderLayout()); //Set up banner to use as custom preview panel banner = new JLabel("Welcome to the Tutorial Zone!", JLabel.CENTER); banner.setForeground(Color.yellow); banner.setBackground(Color.blue); banner.setOpaque(true); banner.setFont(new Font("SansSerif", Font.BOLD, 24)); banner.setPreferredSize(new Dimension(100, 65)); JPanel bannerPanel = new JPanel(new BorderLayout()); bannerPanel.add(banner, BorderLayout.CENTER); bannerPanel.setBorder(BorderFactory.createTitledBorder("Banner")); //Set up color chooser for setting background color JPanel panel = new JPanel(); //use FlowLayout JButton bcc = new JButton("Show Color Chooser..."); bcc.addActionListener(this); panel.add(bcc); panel.setBorder(BorderFactory.createTitledBorder( "Choose Background Color")); //Set up color chooser for setting text color tcc = new JColorChooser(); tcc.getSelectionModel().addChangeListener(this); tcc.setBorder(BorderFactory.createTitledBorder("Choose Text Color")); //Remove the preview panel tcc.setPreviewPanel(new JPanel()); //Override the chooser panels with our own AbstractColorChooserPanel panels[] = { new CrayonPanel() }; tcc.setChooserPanels(panels); tcc.setColor(banner.getForeground()); add(bannerPanel, BorderLayout.PAGE_START); add(panel, BorderLayout.CENTER); add(tcc, BorderLayout.PAGE_END); } public void actionPerformed(ActionEvent e) { Color newColor = JColorChooser.showDialog( ColorChooserDemo2.this, "Choose Background Color", banner.getBackground()); if (newColor != null) { banner.setBackground(newColor); } } public void stateChanged(ChangeEvent e) { Color newColor = tcc.getColor(); banner.setForeground(newColor); } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Make sure we have nice window decorations. JFrame.setDefaultLookAndFeelDecorated(true); //Create and set up the window. JFrame frame = new JFrame("ColorChooserDemo2"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. JComponent newContentPane = new ColorChooserDemo2(); newContentPane.setOpaque(true); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } }