Java/Swing JFC/Color Chooser

Содержание

1 Adding a Custom Color Chooser Panel to a JColorChooser Dialog
2 A quick test of the JColorChooser dialog
3 Choose foreground or background color
4 Color Chooser Demo
5 ColorChooser Demo 2
6 ColorChooser Sample 1
7 Creating a JColorChooser Dialog
8 Customizing the Preview Panel of a JColorChooser Dialog
9 extends AbstractColorChooserPanel
10 Getting and Setting the Selected Color in a JColorChooser Dialog
11 JColorChooser demo
12 JColorChooser dialog with a custom preview pane.
13 JColorChooser dialog with the custom GrayScalePanel picker tab.
14 Listening for Changes to the Selected Color in a JColorChooser Dialog
15 Listening for OK and Cancel Events in a JColorChooser Dialog
16 Preview pane simply displays the currently selected color.
17 Removing a Color Chooser Panel from a JColorChooser Dialog
18 Removing the Preview Panel from a JColorChooser Dialog
19 Retrieving the Color Chooser Panels in a JColorChooser Dialog
20 Setting the Order of the Color Chooser Panel Tabs in a JColorChooser Dialog
21 Swing ColorChooser Demo
22 System Color Chooser

Adding a Custom Color Chooser Panel to a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import java.awt.GridLayout; import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.colorchooser.AbstractColorChooserPanel; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   chooser.addChooserPanel(new MyChooserPanel());
 }

} class MyChooserPanel extends AbstractColorChooserPanel {

 public void buildChooser() {
   setLayout(new GridLayout(0, 3));
   makeAddButton("Red", Color.red);
   makeAddButton("Green", Color.green);
   makeAddButton("Blue", Color.blue);
 }
 public void updateChooser() {
 }
 public String getDisplayName() {
   return "MyChooserPanel";
 }
 public Icon getSmallDisplayIcon() {
   return null;
 }
 public Icon getLargeDisplayIcon() {
   return null;
 }
 private void makeAddButton(String name, Color color) {
   JButton button = new JButton(name);
   button.setBackground(color);
   button.setAction(setColorAction);
   add(button);
 }
 Action setColorAction = new AbstractAction() {
   public void actionPerformed(ActionEvent evt) {
     JButton button = (JButton) evt.getSource();
     getColorSelectionModel().setSelectedColor(button.getBackground());
   }
 };

}

 </source>

A quick test of the JColorChooser dialog

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.ruponent; import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JFrame; public class ColorPicker extends JFrame {

 public ColorPicker() {
   super("JColorChooser Test Frame");
   setSize(200, 100);
   final Container contentPane = getContentPane();
   final JButton go = new JButton("Show JColorChooser");
   go.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       Color c;
       c = JColorChooser.showDialog(((Component) e.getSource())
           .getParent(), "Demo", Color.blue);
       contentPane.setBackground(c);
     }
   });
   contentPane.add(go, BorderLayout.SOUTH);
   setDefaultCloseOperation(EXIT_ON_CLOSE);
 }
 public static void main(String args[]) {
   ColorPicker cp = new ColorPicker();
   cp.setVisible(true);
 }

}

 </source>

Choose foreground or background color

   <source lang="java">

/*

* Created on 17.12.2004
*
*/

/* This file is part of BORG.

   BORG is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   BORG is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with BORG; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JFrame;

/**

* GUI control to easy choose foreground or background color.
* Indicates color to be stored by its own foreground or background.
* 
* @author bsv
* 
*/

public class JButtonKnowsBgColor extends JButton {

 // colorProperty is ONE color, but can be indicated by fore or back color
 protected Color colorProperty;
 // bg=true means "choosed color is background color"
 // bg=false means "choosed color is foreground color"
 protected boolean bg;
 
 public JButtonKnowsBgColor( String p_text, Color p_color, boolean p_bg ){
   setText( p_text );
   setColorProperty( p_color );
   setBg( p_bg );
   setColorByProperty();
   addActionListener(new ModalListener());
       
 }
 
 public void setColorByProperty(){
   if( isBg() ){
     setBackground( getColorProperty() );
   } else {
     setForeground( getColorProperty() );
   }
 }
 // for testing purposes only
 public static void main(String[] args) {
   JButtonKnowsBgColor jbkbc = new JButtonKnowsBgColor( "choose back", Color.RED, true );
   JButtonKnowsBgColor jbkbc1 = new JButtonKnowsBgColor( "choose fore", Color.BLUE, false );
   JFrame jf = new JFrame();
   jf.setLayout( new BorderLayout() );
   jf.getContentPane().add( jbkbc, BorderLayout.NORTH );
   jf.getContentPane().add( jbkbc1, BorderLayout.CENTER );
   jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   jf.setSize( 100, 200 );
   jf.setVisible(true);
 }
 /**
  * @return Returns the color.
  */
 public Color getColorProperty() {
   return colorProperty;
 }
 /**
  * @param color The color to set.
  */
 public void setColorProperty(Color color) {
   this.colorProperty = color;
 }
 /**
  * @return Returns the bg.
  */
 protected boolean isBg() {
   return bg;
 }
 /**
  * @param bg The bg to set.
  */
 protected void setBg(boolean bg) {
   this.bg = bg;
 }
 private class ModalListener implements ActionListener{
   public void actionPerformed(ActionEvent event){
     Color selected = JColorChooser.showDialog(
       null, 
       isBg()?"Set background":"Set foreground", 
       getColorProperty());
     setColorProperty(selected);
     setColorByProperty();
     }
  }

}

 </source>

Color Chooser Demo

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.Font; import javax.swing.BorderFactory; import javax.swing.JColorChooser; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.colorchooser.ColorSelectionModel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class ColorSample {

 public static void main(String args[]) {
   JFrame frame = new JFrame("JColorChooser Popup");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   Container contentPane = frame.getContentPane();
   final JLabel label = new JLabel("I Love Swing", JLabel.CENTER);
   label.setFont(new Font("Serif", Font.BOLD | Font.ITALIC, 48));
   contentPane.add(label, BorderLayout.SOUTH);
   final JColorChooser colorChooser = new JColorChooser(label
       .getBackground());
   colorChooser.setBorder(BorderFactory
       .createTitledBorder("Pick Foreground Color"));
   ColorSelectionModel model = colorChooser.getSelectionModel();
   ChangeListener changeListener = new ChangeListener() {
     public void stateChanged(ChangeEvent changeEvent) {
       Color newForegroundColor = colorChooser.getColor();
       label.setForeground(newForegroundColor);
     }
   };
   model.addChangeListener(changeListener);
   contentPane.add(colorChooser, BorderLayout.CENTER);
   frame.pack();
   frame.setVisible(true);
 }

}

 </source>

ColorChooser Demo 2

   <source lang="java">

/* From http://java.sun.ru/docs/books/tutorial/index.html */ /*

* 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:
*
* -Redistribution of source code must retain the above copyright notice, this
*  list of conditions and the following disclaimer.
*
* -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.
*
* 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
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
* INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BorderFactory; import javax.swing.ButtonGroup; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JToggleButton; import javax.swing.border.Border; import javax.swing.colorchooser.AbstractColorChooserPanel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; /*

* 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();
     }
   });
 }

} class CrayonPanel extends AbstractColorChooserPanel implements ActionListener {

 JToggleButton redCrayon;
 JToggleButton yellowCrayon;
 JToggleButton greenCrayon;
 JToggleButton blueCrayon;
 public void updateChooser() {
   Color color = getColorFromModel();
   if (Color.red.equals(color)) {
     redCrayon.setSelected(true);
   } else if (Color.yellow.equals(color)) {
     yellowCrayon.setSelected(true);
   } else if (Color.green.equals(color)) {
     greenCrayon.setSelected(true);
   } else if (Color.blue.equals(color)) {
     blueCrayon.setSelected(true);
   }
 }
 protected JToggleButton createCrayon(String name, Border normalBorder) {
   JToggleButton crayon = new JToggleButton();
   crayon.setActionCommand(name);
   crayon.addActionListener(this);
   //Set the image or, if that"s invalid, equivalent text.
   ImageIcon icon = createImageIcon("images/" + name + ".gif");
   if (icon != null) {
     crayon.setIcon(icon);
     crayon.setToolTipText("The " + name + " crayon");
     crayon.setBorder(normalBorder);
   } else {
     crayon.setText("Image not found. This is the " + name + " button.");
     crayon.setFont(crayon.getFont().deriveFont(Font.ITALIC));
     crayon.setHorizontalAlignment(JButton.HORIZONTAL);
     crayon.setBorder(BorderFactory.createLineBorder(Color.BLACK));
   }
   return crayon;
 }
 protected void buildChooser() {
   setLayout(new GridLayout(0, 1));
   ButtonGroup boxOfCrayons = new ButtonGroup();
   Border border = BorderFactory.createEmptyBorder(4, 4, 4, 4);
   redCrayon = createCrayon("red", border);
   boxOfCrayons.add(redCrayon);
   add(redCrayon);
   yellowCrayon = createCrayon("yellow", border);
   boxOfCrayons.add(yellowCrayon);
   add(yellowCrayon);
   greenCrayon = createCrayon("green", border);
   boxOfCrayons.add(greenCrayon);
   add(greenCrayon);
   blueCrayon = createCrayon("blue", border);
   boxOfCrayons.add(blueCrayon);
   add(blueCrayon);
 }
 /** Returns an ImageIcon, or null if the path was invalid. */
 protected static ImageIcon createImageIcon(String path) {
   java.net.URL imgURL = CrayonPanel.class.getResource(path);
   if (imgURL != null) {
     return new ImageIcon(imgURL);
   } else {
     System.err.println("Couldn"t find file: " + path);
     return null;
   }
 }
 public void actionPerformed(ActionEvent e) {
   Color newColor = null;
   String command = ((JToggleButton) e.getSource()).getActionCommand();
   if ("green".equals(command))
     newColor = Color.green;
   else if ("red".equals(command))
     newColor = Color.red;
   else if ("yellow".equals(command))
     newColor = Color.yellow;
   else if ("blue".equals(command))
     newColor = Color.blue;
   getColorSelectionModel().setSelectedColor(newColor);
 }
 public String getDisplayName() {
   return "Crayons";
 }
 public Icon getSmallDisplayIcon() {
   return null;
 }
 public Icon getLargeDisplayIcon() {
   return null;
 }

}

 </source>

ColorChooser Sample 1

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JFrame; public class ColorChooserSample {

 public static void main(String args[]) {
   JFrame f = new JFrame("JColorChooser Sample");
   f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   Container content = f.getContentPane();
   final JButton button = new JButton("Pick to Change Background");
   ActionListener actionListener = new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       Color initialBackground = button.getBackground();
       Color background = JColorChooser.showDialog(null,
           "JColorChooser Sample", initialBackground);
       if (background != null) {
         button.setBackground(background);
       }
     }
   };
   button.addActionListener(actionListener);
   content.add(button, BorderLayout.CENTER);
   f.setSize(300, 200);
   f.setVisible(true);
 }

}

 </source>

Creating a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import javax.swing.JColorChooser; public class Main {

 public static void main(String[] argv) {
   Color initialColor = Color.red;
   Color newColor = JColorChooser.showDialog(null, "Dialog Title", initialColor);
 }

}

 </source>

Customizing the Preview Panel of a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import javax.swing.JColorChooser; import javax.swing.JComponent; import javax.swing.colorchooser.ColorSelectionModel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   final MyPreviewPanel pre = new MyPreviewPanel(chooser);
   chooser.setPreviewPanel(pre);
   
   ColorSelectionModel model = chooser.getSelectionModel();
   model.addChangeListener(new ChangeListener() {
     public void stateChanged(ChangeEvent evt) {
       ColorSelectionModel model = (ColorSelectionModel) evt.getSource();
       pre.curColor = model.getSelectedColor();
     }
   });

   
 }

} class MyPreviewPanel extends JComponent {

 Color curColor;
 public MyPreviewPanel(JColorChooser chooser) {
   curColor = chooser.getColor();
   
   setPreferredSize(new Dimension(50, 50));
 }
 public void paint(Graphics g) {
   g.setColor(curColor);
   g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
 }

}

 </source>

extends AbstractColorChooserPanel

   <source lang="java">

/*

* Copyright (c) 1995 - 2008 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:
*
*   - 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 Sun Microsystems nor 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
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.BorderFactory; import javax.swing.ButtonGroup; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JToggleButton; import javax.swing.border.Border; import javax.swing.colorchooser.AbstractColorChooserPanel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; /*

* ColorChooserDemo2.java 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() {
   // 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();
     }
   });
 }

} /*

* Copyright (c) 1995 - 2008 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:
*  - 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 Sun Microsystems nor 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 LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

class CrayonPanel extends AbstractColorChooserPanel implements ActionListener {

 JToggleButton redCrayon;
 JToggleButton yellowCrayon;
 JToggleButton greenCrayon;
 JToggleButton blueCrayon;
 public void updateChooser() {
   Color color = getColorFromModel();
   if (Color.red.equals(color)) {
     redCrayon.setSelected(true);
   } else if (Color.yellow.equals(color)) {
     yellowCrayon.setSelected(true);
   } else if (Color.green.equals(color)) {
     greenCrayon.setSelected(true);
   } else if (Color.blue.equals(color)) {
     blueCrayon.setSelected(true);
   }
 }
 protected JToggleButton createCrayon(String name, Border normalBorder) {
   JToggleButton crayon = new JToggleButton();
   crayon.setActionCommand(name);
   crayon.addActionListener(this);
   // Set the image or, if that"s invalid, equivalent text.
   ImageIcon icon = createImageIcon("images/" + name + ".gif");
   if (icon != null) {
     crayon.setIcon(icon);
     crayon.setToolTipText("The " + name + " crayon");
     crayon.setBorder(normalBorder);
   } else {
     crayon.setText("Image not found. This is the " + name + " button.");
     crayon.setFont(crayon.getFont().deriveFont(Font.ITALIC));
     crayon.setHorizontalAlignment(JButton.HORIZONTAL);
     crayon.setBorder(BorderFactory.createLineBorder(Color.BLACK));
   }
   return crayon;
 }
 protected void buildChooser() {
   setLayout(new GridLayout(0, 1));
   ButtonGroup boxOfCrayons = new ButtonGroup();
   Border border = BorderFactory.createEmptyBorder(4, 4, 4, 4);
   redCrayon = createCrayon("red", border);
   boxOfCrayons.add(redCrayon);
   add(redCrayon);
   yellowCrayon = createCrayon("yellow", border);
   boxOfCrayons.add(yellowCrayon);
   add(yellowCrayon);
   greenCrayon = createCrayon("green", border);
   boxOfCrayons.add(greenCrayon);
   add(greenCrayon);
   blueCrayon = createCrayon("blue", border);
   boxOfCrayons.add(blueCrayon);
   add(blueCrayon);
 }
 /** Returns an ImageIcon, or null if the path was invalid. */
 protected static ImageIcon createImageIcon(String path) {
   java.net.URL imgURL = CrayonPanel.class.getResource(path);
   if (imgURL != null) {
     return new ImageIcon(imgURL);
   } else {
     System.err.println("Couldn"t find file: " + path);
     return null;
   }
 }
 public void actionPerformed(ActionEvent e) {
   Color newColor = null;
   String command = ((JToggleButton) e.getSource()).getActionCommand();
   if ("green".equals(command))
     newColor = Color.green;
   else if ("red".equals(command))
     newColor = Color.red;
   else if ("yellow".equals(command))
     newColor = Color.yellow;
   else if ("blue".equals(command))
     newColor = Color.blue;
   getColorSelectionModel().setSelectedColor(newColor);
 }
 public String getDisplayName() {
   return "Crayons";
 }
 public Icon getSmallDisplayIcon() {
   return null;
 }
 public Icon getLargeDisplayIcon() {
   return null;
 }

}

 </source>

Getting and Setting the Selected Color in a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import javax.swing.JColorChooser; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   // Set the selected color
   chooser.setColor(Color.red);
   // Get current selected color
   Color color = chooser.getColor();
 }

}

 </source>

JColorChooser demo

   <source lang="java">

import java.awt.Color; import java.awt.GridBagLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JFrame; public class ColorChooserDemo extends JFrame {

 public ColorChooserDemo() {
   super();
   createUI();
   setVisible(true);
 }
 protected void createUI() {
   setSize(400, 400);
   getContentPane().setLayout(new GridBagLayout());
   JButton colorButton = new JButton("Choose a color...");
   getContentPane().add(colorButton);
   colorButton.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent ae) {
       Color c = JColorChooser.showDialog(ColorChooserDemo.this,
           "Choose a color...", getBackground());
       if (c != null)
         getContentPane().setBackground(c);
     }
   });
   addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent we) {
       System.exit(0);
     }
   });
 }
 public static void main(String[] args) {
   new ColorChooserDemo();
 }

}

 </source>

JColorChooser dialog with a custom preview pane.

   <source lang="java">

/* Java Swing, 2nd Edition By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole ISBN: 0-596-00408-7 Publisher: O"Reilly

/

// ColorPicker3.java //A quick test of the JColorChooser dialog. This example adds a custom //preview pane. // import java.awt.BorderLayout; import java.awt.Color; import java.awt.Container; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.JTextField; import javax.swing.SwingConstants; import javax.swing.colorchooser.AbstractColorChooserPanel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class ColorPicker3 extends JFrame {

 Color c;
 public ColorPicker3() {
   super("JColorChooser Test Frame");
   setSize(200, 100);
   final JButton go = new JButton("Show JColorChoser");
   final Container contentPane = getContentPane();
   go.addActionListener(new ActionListener() {
     final JColorChooser chooser = new JColorChooser();
     boolean first = true;
     public void actionPerformed(ActionEvent e) {
       if (first) {
         first = false;
         GrayScalePanel gsp = new GrayScalePanel();
         chooser.addChooserPanel(gsp);
         chooser.setPreviewPanel(new CustomPane());
       }
       JDialog dialog = JColorChooser.createDialog(ColorPicker3.this,
           "Demo 3", true, chooser, new ActionListener() {
             public void actionPerformed(ActionEvent e) {
               c = chooser.getColor();
             }
           }, null);
       dialog.setVisible(true);
       contentPane.setBackground(c);
     }
   });
   contentPane.add(go, BorderLayout.SOUTH);
   // addWindowListener(new BasicWindowMonitor()); // 1.1 & 1.2
   setDefaultCloseOperation(EXIT_ON_CLOSE);
 }
 public class CustomPane extends JPanel {
   JLabel j1 = new JLabel("This is a custom preview pane", JLabel.CENTER);
   JLabel j2 = new JLabel("This label previews the background",
       JLabel.CENTER);
   public CustomPane() {
     super(new GridLayout(0, 1));
     j2.setOpaque(true);
     add(j1);
     add(j2);
   }
   public void setForeground(Color c) {
     super.setForeground(c);
     if (j1 != null) {
       j1.setForeground(c);
       j2.setBackground(c);
     }
   }
 }
 public static void main(String args[]) {
   ColorPicker3 cp3 = new ColorPicker3();
   cp3.setVisible(true);
 }

} //GrayScalePanel.java //A simple implementation of the AbstractColorChooserPanel class. This class //provides a slider and a textfield for picking out a shade of gray. // class GrayScalePanel extends AbstractColorChooserPanel implements

   ChangeListener, ActionListener {
 JSlider scale;
 JTextField percentField;
 // Set up our list of grays. We"ll assume we have all 256 possible shades,
 // and we"ll do it when the class is loaded.
 static Color[] grays = new Color[256];
 static {
   for (int i = 0; i < 256; i++) {
     grays[i] = new Color(i, i, i);
   }
 }
 public GrayScalePanel() {
   setLayout(new GridLayout(0, 1));
   // create the slider and attach us as a listener
   scale = new JSlider(JSlider.HORIZONTAL, 0, 255, 128);
   scale.addChangeListener(this);
   // Set up our display for the chooser
   add(new JLabel("Pick your shade of gray:", JLabel.CENTER));
   JPanel jp = new JPanel();
   jp.add(new JLabel("Black"));
   jp.add(scale);
   jp.add(new JLabel("White"));
   add(jp);
   JPanel jp2 = new JPanel();
   percentField = new JTextField(3);
   percentField.setHorizontalAlignment(SwingConstants.RIGHT);
   percentField.addActionListener(this);
   jp2.add(percentField);
   jp2.add(new JLabel("%"));
   add(jp2);
 }
 // We did this work in the constructor so we can skip it here.
 protected void buildChooser() {
 }
 // Make sure the slider is in sync with the other panels.
 public void updateChooser() {
   Color c = getColorSelectionModel().getSelectedColor();
   scale.setValue(toGray(c));
 }
 protected int toGray(Color c) {
   int r = c.getRed();
   int g = c.getGreen();
   int b = c.getBlue();
   // Grab the luminance the same way GIMP does...
   return (int) Math.round(0.3 * r + 0.59 * g + 0.11 * b);
 }
 // Pick a name for our tab in the chooser
 public String getDisplayName() {
   return "Gray Scale";
 }
 // No need for an icon.
 public Icon getSmallDisplayIcon() {
   return null;
 }
 public Icon getLargeDisplayIcon() {
   return null;
 }
 // And lastly, update the selection model as our slider changes.
 public void stateChanged(ChangeEvent ce) {
   getColorSelectionModel().setSelectedColor(grays[scale.getValue()]);
   percentField.setText(""
       + (100 - (int) Math.round(scale.getValue() / 2.55)));
 }
 public void actionPerformed(ActionEvent ae) {
   int val = 100 - Integer.parseInt(ae.getActionCommand());
   getColorSelectionModel().setSelectedColor(grays[(int) (val * 2.55)]);
 }

}

 </source>

JColorChooser dialog with the custom GrayScalePanel picker tab.

   <source lang="java">

/* Java Swing, 2nd Edition By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole ISBN: 0-596-00408-7 Publisher: O"Reilly

/

// ColorPicker2.java //A quick test of the JColorChooser dialog. This one installs the custom //GrayScalePanel picker tab. // import java.awt.Color; import java.awt.Container; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JSlider; import javax.swing.JTextField; import javax.swing.SwingConstants; import javax.swing.colorchooser.AbstractColorChooserPanel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class ColorPicker2 extends JFrame {

 Color c;
 public ColorPicker2() {
   super("JColorChooser Test Frame");
   setSize(200, 100);
   final JButton go = new JButton("Show JColorChoser");
   final Container contentPane = getContentPane();
   go.addActionListener(new ActionListener() {
     final JColorChooser chooser = new JColorChooser();
     boolean first = true;
     public void actionPerformed(ActionEvent e) {
       if (first) {
         first = false;
         GrayScalePanel gsp = new GrayScalePanel();
         chooser.addChooserPanel(gsp);
       }
       JDialog dialog = JColorChooser.createDialog(ColorPicker2.this,
           "Demo 2", true, chooser, new ActionListener() {
             public void actionPerformed(ActionEvent e) {
               c = chooser.getColor();
             }
           }, null);
       dialog.setVisible(true);
       contentPane.setBackground(c);
     }
   });
   contentPane.add(go);
   setDefaultCloseOperation(EXIT_ON_CLOSE);
 }
 public static void main(String args[]) {
   ColorPicker2 cp2 = new ColorPicker2();
   cp2.setVisible(true);
 }

} //GrayScalePanel.java //A simple implementation of the AbstractColorChooserPanel class. This class //provides a slider and a textfield for picking out a shade of gray. // class GrayScalePanel extends AbstractColorChooserPanel implements

   ChangeListener, ActionListener {
 JSlider scale;
 JTextField percentField;
 // Set up our list of grays. We"ll assume we have all 256 possible shades,
 // and we"ll do it when the class is loaded.
 static Color[] grays = new Color[256];
 static {
   for (int i = 0; i < 256; i++) {
     grays[i] = new Color(i, i, i);
   }
 }
 public GrayScalePanel() {
   setLayout(new GridLayout(0, 1));
   // create the slider and attach us as a listener
   scale = new JSlider(JSlider.HORIZONTAL, 0, 255, 128);
   scale.addChangeListener(this);
   // Set up our display for the chooser
   add(new JLabel("Pick your shade of gray:", JLabel.CENTER));
   JPanel jp = new JPanel();
   jp.add(new JLabel("Black"));
   jp.add(scale);
   jp.add(new JLabel("White"));
   add(jp);
   JPanel jp2 = new JPanel();
   percentField = new JTextField(3);
   percentField.setHorizontalAlignment(SwingConstants.RIGHT);
   percentField.addActionListener(this);
   jp2.add(percentField);
   jp2.add(new JLabel("%"));
   add(jp2);
 }
 // We did this work in the constructor so we can skip it here.
 protected void buildChooser() {
 }
 // Make sure the slider is in sync with the other panels.
 public void updateChooser() {
   Color c = getColorSelectionModel().getSelectedColor();
   scale.setValue(toGray(c));
 }
 protected int toGray(Color c) {
   int r = c.getRed();
   int g = c.getGreen();
   int b = c.getBlue();
   // Grab the luminance the same way GIMP does...
   return (int) Math.round(0.3 * r + 0.59 * g + 0.11 * b);
 }
 // Pick a name for our tab in the chooser
 public String getDisplayName() {
   return "Gray Scale";
 }
 // No need for an icon.
 public Icon getSmallDisplayIcon() {
   return null;
 }
 public Icon getLargeDisplayIcon() {
   return null;
 }
 // And lastly, update the selection model as our slider changes.
 public void stateChanged(ChangeEvent ce) {
   getColorSelectionModel().setSelectedColor(grays[scale.getValue()]);
   percentField.setText(""
       + (100 - (int) Math.round(scale.getValue() / 2.55)));
 }
 public void actionPerformed(ActionEvent ae) {
   int val = 100 - Integer.parseInt(ae.getActionCommand());
   getColorSelectionModel().setSelectedColor(grays[(int) (val * 2.55)]);
 }

}

 </source>

Listening for Changes to the Selected Color in a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import javax.swing.JColorChooser; import javax.swing.colorchooser.ColorSelectionModel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   ColorSelectionModel model = chooser.getSelectionModel();
   model.addChangeListener(new ChangeListener() {
     public void stateChanged(ChangeEvent evt) {
       ColorSelectionModel model = (ColorSelectionModel) evt.getSource();
       Color newColor = model.getSelectedColor();
     }
   });
 }

}

 </source>

Listening for OK and Cancel Events in a JColorChooser Dialog

   <source lang="java">

import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.JColorChooser; import javax.swing.JDialog; public class Main {

 public static void main(String[] argv) {
   final JColorChooser chooser = new JColorChooser();
   ActionListener okListener = new ActionListener() {
     public void actionPerformed(ActionEvent evt) {
       Color newColor = chooser.getColor();
     }
   };
   ActionListener cancelListener = new ActionListener() {
     public void actionPerformed(ActionEvent evt) {
       Color newColor = chooser.getColor();
     }
   };
   boolean modal = false;
   JDialog dialog = JColorChooser.createDialog(null, "Dialog Title", modal, chooser, okListener,
       cancelListener);
   dialog.addWindowListener(new WindowAdapter() {
     public void windowClosing(WindowEvent evt) {
       Color newColor = chooser.getColor();
     }
   });
 }

}

 </source>

Preview pane simply displays the currently selected color.

   <source lang="java">

class MyPreviewPane extends JLabel{

 Color curColor;
 public MyPreviewPane(JColorChooser chooser) {
   curColor = chooser.getColor();
   ColorSelectionModel model = chooser.getSelectionModel();
   model.addChangeListener(new ChangeListener() {
     public void stateChanged(ChangeEvent evt) {
       ColorSelectionModel model = (ColorSelectionModel) evt.getSource();
       curColor = model.getSelectedColor();
     }
   });
   setPreferredSize(new Dimension(50, 50));
 }
 public void paint(Graphics g) {
   g.setColor(curColor);
   g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
 }

}

 </source>

Removing a Color Chooser Panel from a JColorChooser Dialog

   <source lang="java">

import javax.swing.JColorChooser; import javax.swing.colorchooser.AbstractColorChooserPanel; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   AbstractColorChooserPanel[] oldPanels = chooser.getChooserPanels();
   for (int i = 0; i < oldPanels.length; i++) {
     String clsName = oldPanels[i].getClass().getName();
     if (clsName.equals("javax.swing.colorchooser.DefaultSwatchChooserPanel")) {
       chooser.removeChooserPanel(oldPanels[i]);
     } else if (clsName.equals("javax.swing.colorchooser.DefaultRGBChooserPanel")) {
       chooser.removeChooserPanel(oldPanels[i]);
     } else if (clsName.equals("javax.swing.colorchooser.DefaultHSBChooserPanel")) {
       chooser.removeChooserPanel(oldPanels[i]);
     }
   }
 }

}

 </source>

Removing the Preview Panel from a JColorChooser Dialog

   <source lang="java">

import javax.swing.JColorChooser; import javax.swing.JPanel; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   chooser.setPreviewPanel(new JPanel());
 }

}

 </source>

Retrieving the Color Chooser Panels in a JColorChooser Dialog

   <source lang="java">

import javax.swing.JColorChooser; import javax.swing.colorchooser.AbstractColorChooserPanel; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   findPanel(chooser, "javax.swing.colorchooser.DefaultSwatchChooserPanel");
   findPanel(chooser, "javax.swing.colorchooser.DefaultHSBChooserPanel");
   findPanel(chooser, "javax.swing.colorchooser.DefaultRGBChooserPanel");
 }
 public static AbstractColorChooserPanel findPanel(JColorChooser chooser, String name) {
   AbstractColorChooserPanel[] panels = chooser.getChooserPanels();
   for (int i = 0; i < panels.length; i++) {
     String clsName = panels[i].getClass().getName();
     if (clsName.equals(name)) {
       return panels[i];
     }
   }
   return null;
 }

}

 </source>

Setting the Order of the Color Chooser Panel Tabs in a JColorChooser Dialog

   <source lang="java">

import javax.swing.JColorChooser; import javax.swing.colorchooser.AbstractColorChooserPanel; public class Main {

 public static void main(String[] argv) {
   JColorChooser chooser = new JColorChooser();
   int numPanels = chooser.getChooserPanels().length;
   AbstractColorChooserPanel[] newPanels = new AbstractColorChooserPanel[numPanels];
   newPanels[0] = findPanel(chooser, "javax.swing.colorchooser.DefaultHSBChooserPanel");
   newPanels[1] = findPanel(chooser, "javax.swing.colorchooser.DefaultRGBChooserPanel");
   newPanels[2] = findPanel(chooser, "javax.swing.colorchooser.DefaultSwatchChooserPanel");
   chooser.setChooserPanels(newPanels);
 }
 public static AbstractColorChooserPanel findPanel(JColorChooser chooser, String name) {
   AbstractColorChooserPanel[] panels = chooser.getChooserPanels();
   for (int i = 0; i < panels.length; i++) {
     String clsName = panels[i].getClass().getName();
     if (clsName.equals(name)) {
       return panels[i];
     }
   }
   return null;
 }

}

 </source>

Swing ColorChooser Demo

   <source lang="java">

/* From http://java.sun.ru/docs/books/tutorial/index.html */ /*

* 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:
*
* -Redistribution of source code must retain the above copyright notice, this
*  list of conditions and the following disclaimer.
*
* -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.
*
* 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
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
* INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
* OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
* EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
* nuclear facility.
*/

import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import javax.swing.BorderFactory; import javax.swing.JColorChooser; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.event.ChangeEvent; import javax.swing.event.ChangeListener; /* SwingColorChooserDemo.java is a 1.4 application that requires no other files. */ public class SwingColorChooserDemo extends JPanel implements ChangeListener {

 protected JColorChooser tcc;
 protected JLabel banner;
 public SwingColorChooserDemo() {
   super(new BorderLayout());
   //Set up the banner at the top of the window
   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 text color
   tcc = new JColorChooser(banner.getForeground());
   tcc.getSelectionModel().addChangeListener(this);
   tcc.setBorder(BorderFactory.createTitledBorder("Choose Text Color"));
   add(bannerPanel, BorderLayout.CENTER);
   add(tcc, BorderLayout.PAGE_END);
 }
 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("SwingColorChooserDemo");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   //Create and set up the content pane.
   JComponent newContentPane = new SwingColorChooserDemo();
   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();
     }
   });
 }

}

 </source>

System Color Chooser

   <source lang="java">

/* Definitive Guide to Swing for Java 2, Second Edition By John Zukowski ISBN: 1-893115-78-X Publisher: APress

/

import java.awt.BorderLayout; import java.awt.Color; import java.awt.ruponent; import java.awt.Container; import java.awt.Graphics; import java.awt.Polygon; import java.awt.SystemColor; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JColorChooser; import javax.swing.JComboBox; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.SwingUtilities; import javax.swing.colorchooser.AbstractColorChooserPanel; import javax.swing.colorchooser.ColorSelectionModel; public class CustomPanelPopup {

 public static void main(String args[]) {
   JFrame frame = new JFrame("JColorChooser Custom Panel Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   Container contentPane = frame.getContentPane();
   final JButton button = new JButton("Pick to Change Background");
   ActionListener actionListener = new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       Color initialBackground = button.getBackground();
       final JColorChooser colorChooser = new JColorChooser(
           initialBackground);
       SystemColorChooserPanel newChooser = new SystemColorChooserPanel();
       //        AbstractColorChooserPanel chooserPanels[] = {newChooser};
       //        colorChooser.setChooserPanels(chooserPanels);
       colorChooser.addChooserPanel(newChooser);
       // For okay button selection, change button background to
       // selected color
       ActionListener okActionListener = new ActionListener() {
         public void actionPerformed(ActionEvent actionEvent) {
           Color newColor = colorChooser.getColor();
           if (newColor.equals(button.getForeground())) {
             System.out.println("Color change rejected");
           } else {
             button.setBackground(colorChooser.getColor());
           }
         }
       };
       // For cancel button selection, change button background to red
       ActionListener cancelActionListener = new ActionListener() {
         public void actionPerformed(ActionEvent actionEvent) {
           button.setBackground(Color.red);
         }
       };
       final JDialog dialog = JColorChooser.createDialog(null,
           "Change Button Background", true, colorChooser,
           okActionListener, cancelActionListener);
       // Wait until current event dispatching completes before showing
       // dialog
       Runnable showDialog = new Runnable() {
         public void run() {
           dialog.show();
         }
       };
       SwingUtilities.invokeLater(showDialog);
     }
   };
   button.addActionListener(actionListener);
   contentPane.add(button, BorderLayout.CENTER);
   frame.setSize(300, 100);
   frame.setVisible(true);
 }

} class SystemColorChooserPanel extends AbstractColorChooserPanel implements

   ItemListener {
 private static int NOT_FOUND = -1;
 JComboBox comboBox;
 String labels[] = { "black", "blue", "cyan", "darkGray", "gray", "green",
     "lightGray", "magenta", "orange", "pink", "red", "white", "yellow",
     "activeCaption", "activeCaptionBorder", "activeCaptionText",
     "control", "controlDkShadow", "controlHighlight",
     "controlLtHighlight", "controlShadow", "controlText", "desktop",
     "inactiveCaption", "inactiveCaptionBorder", "inactiveCaptionText",
     "info", "infoText", "menu", "menuText", "scrollbar", "text",
     "textHighlight", "textHighlightText", "textInactiveText",
     "textText", "window", "windowBorder", "windowText", "<Custom>" };
 Color colors[] = { Color.black, Color.blue, Color.cyan, Color.darkGray,
     Color.gray, Color.green, Color.lightGray, Color.magenta,
     Color.orange, Color.pink, Color.red, Color.white, Color.yellow,
     SystemColor.activeCaption, SystemColor.activeCaptionBorder,
     SystemColor.activeCaptionText, SystemColor.control,
     SystemColor.controlDkShadow, SystemColor.controlHighlight,
     SystemColor.controlLtHighlight, SystemColor.controlShadow,
     SystemColor.controlText, SystemColor.desktop,
     SystemColor.inactiveCaption, SystemColor.inactiveCaptionBorder,
     SystemColor.inactiveCaptionText, SystemColor.info,
     SystemColor.infoText, SystemColor.menu, SystemColor.menuText,
     SystemColor.scrollbar, SystemColor.text, SystemColor.textHighlight,
     SystemColor.textHighlightText, SystemColor.textInactiveText,
     SystemColor.textText, SystemColor.window, SystemColor.windowBorder,
     SystemColor.windowText, null };
 // Change combo box to match color, if possible
 private void setColor(Color newColor) {
   int position = findColorPosition(newColor);
   comboBox.setSelectedIndex(position);
 }
 // Given a label, find the position of the label in the list
 private int findColorLabel(Object label) {
   String stringLabel = label.toString();
   int position = NOT_FOUND;
   for (int i = 0, n = labels.length; i < n; i++) {
     if (stringLabel.equals(labels[i])) {
       position = i;
       break;
     }
   }
   return position;
 }
 // Given a color, find the position whose color matches
 // This could result in a position different from original if two are equal
 // Since color is same, this is considered to be okay
 private int findColorPosition(Color color) {
   int position = colors.length - 1;
   // Cannot use equals() to compare Color and SystemColor
   int colorRGB = color.getRGB();
   for (int i = 0, n = colors.length; i < n; i++) {
     if ((colors[i] != null) && (colorRGB == colors[i].getRGB())) {
       position = i;
       break;
     }
   }
   return position;
 }
 public void itemStateChanged(ItemEvent itemEvent) {
   int state = itemEvent.getStateChange();
   if (state == ItemEvent.SELECTED) {
     int position = findColorLabel(itemEvent.getItem());
     // last position is bad (not selectable)
     if ((position != NOT_FOUND) && (position != labels.length - 1)) {
       ColorSelectionModel selectionModel = getColorSelectionModel();
       selectionModel.setSelectedColor(colors[position]);
     }
   }
 }
 public String getDisplayName() {
   return "SystemColor";
 }
 public Icon getSmallDisplayIcon() {
   return new DiamondIcon(Color.blue);
 }
 public Icon getLargeDisplayIcon() {
   return new DiamondIcon(Color.green);
 }
 protected void buildChooser() {
   comboBox = new JComboBox(labels);
   comboBox.addItemListener(this);
   add(comboBox);
 }
 public void updateChooser() {
   Color color = getColorFromModel();
   setColor(color);
 }

} class DiamondIcon implements Icon {

 private Color color;
 private boolean selected;
 private int width;
 private int height;
 private Polygon poly;
 private static final int DEFAULT_WIDTH = 10;
 private static final int DEFAULT_HEIGHT = 10;
 public DiamondIcon(Color color) {
   this(color, true, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 }
 public DiamondIcon(Color color, boolean selected) {
   this(color, selected, DEFAULT_WIDTH, DEFAULT_HEIGHT);
 }
 public DiamondIcon(Color color, boolean selected, int width, int height) {
   this.color = color;
   this.selected = selected;
   this.width = width;
   this.height = height;
   initPolygon();
 }
 private void initPolygon() {
   poly = new Polygon();
   int halfWidth = width / 2;
   int halfHeight = height / 2;
   poly.addPoint(0, halfHeight);
   poly.addPoint(halfWidth, 0);
   poly.addPoint(width, halfHeight);
   poly.addPoint(halfWidth, height);
 }
 public int getIconHeight() {
   return height;
 }
 public int getIconWidth() {
   return width;
 }
 public void paintIcon(Component c, Graphics g, int x, int y) {
   g.setColor(color);
   g.translate(x, y);
   if (selected) {
     g.fillPolygon(poly);
   } else {
     g.drawPolygon(poly);
   }
   g.translate(-x, -y);
 }

}

 </source>

Java/Swing JFC/Color Chooser

Содержание

Adding a Custom Color Chooser Panel to a JColorChooser Dialog

A quick test of the JColorChooser dialog

Choose foreground or background color

Color Chooser Demo

ColorChooser Demo 2

ColorChooser Sample 1

Creating a JColorChooser Dialog

Customizing the Preview Panel of a JColorChooser Dialog

extends AbstractColorChooserPanel

Getting and Setting the Selected Color in a JColorChooser Dialog

JColorChooser demo

JColorChooser dialog with a custom preview pane.

JColorChooser dialog with the custom GrayScalePanel picker tab.

Listening for Changes to the Selected Color in a JColorChooser Dialog

Listening for OK and Cancel Events in a JColorChooser Dialog

Preview pane simply displays the currently selected color.

Removing a Color Chooser Panel from a JColorChooser Dialog

Removing the Preview Panel from a JColorChooser Dialog

Retrieving the Color Chooser Panels in a JColorChooser Dialog

Setting the Order of the Color Chooser Panel Tabs in a JColorChooser Dialog

Swing ColorChooser Demo

System Color Chooser

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