System Color Chooser : Color Chooser « Swing JFC « Java

System Color Chooser

System Color Chooser
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.Component;
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");
    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(
        SystemColorChooserPanel newChooser = new SystemColorChooserPanel();
        //        AbstractColorChooserPanel chooserPanels[] = {newChooser};
        //        colorChooser.setChooserPanels(chooserPanels);

        // 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 {

        // For cancel button selection, change button background to red
        ActionListener cancelActionListener = new ActionListener() {
          public void actionPerformed(ActionEvent actionEvent) {

        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() {
    contentPane.add(button, BorderLayout.CENTER);

    frame.setSize(300, 100);

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.cyan, Color.darkGray,
      Color.gray,, Color.lightGray, Color.magenta,,,, 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.infoText,, 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);

  // 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;
    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;
    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();

  public String getDisplayName() {
    return "SystemColor";

  public Icon getSmallDisplayIcon() {
    return new DiamondIcon(;

  public Icon getLargeDisplayIcon() {
    return new DiamondIcon(;

  protected void buildChooser() {
    comboBox = new JComboBox(labels);

  public void updateChooser() {
    Color color = getColorFromModel();

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;

  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.translate(x, y);
    if (selected) {
    } else {
    g.translate(-x, -y);


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