extends AbstractColorChooserPanel : Color Chooser « Swing JFC « Java






extends AbstractColorChooserPanel

extends AbstractColorChooserPanel
   
/*
 * 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;
  }
}

   
    
    
  








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