colorselector.java

更方便的SWING

/*
 * PSwing Utilities -- Nifty Swing Widgets
 * Copyright (C) 2002  Pallas Technology
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Pallas Technology
 * 1170 HOWELL MILL RD NW
 * SUITE 306
 * ATLANTA GEORGIA 30318
 * 
 * PHONE [phone]
 * EMAIL [e-mail]
 * 
 * www.pallastechnology.com
 **************************************************************************
 * $Archive: SwingTools$
 * $FileName: ColorSelector.java$
 * $FileID: 32$
 *
 * Last change:
 * $AuthorName: Rob MacGrogan$
 * $Date: 8/11/03 6:36 PM$
 * $VerID: 95$
 * $Comment: Use color icon instead of bg color of button to display
 *          chosen color. Works better across all look and feels.$
 **************************************************************************/
package com.pallas.swing.color;

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.JComboBox;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 * Title:   $FileName: ColorSelector.java$
 * @version $VerNum: 2$
 * @author $AuthorName: Rob MacGrogan$<br><br>
 * 
 * $Description: Color selector.$<br>
 * $KeyWordsOff: $<br><br>
 */
public class ColorSelector extends JPanel {

  private Color chosenColor = Color.GRAY;
  private ColorSelector instance = null;
  private JButton selection = null;

  public ColorSelector(){
    initializeComponent();
  }
  
  public ColorSelector(Color c){
    chosenColor = c;
    initializeComponent();
  }

  public ColorSelector(Color c, String label){
    chosenColor = c;
    initializeComponent(label);
  }
  
  public void setColor(Color color){
    chosenColor = color;
  }
  
  
  public Color getColor(){
    return chosenColor;
  }

  private void initializeComponent(){
    initializeComponent(null);
  }

  
  private void initializeComponent(String label){
    selection = buildChooseColorButton(label);
    setLayout(new BorderLayout());
    add(selection, BorderLayout.CENTER);
    instance = this;
  }
  
  private JButton buildChooseColorButton(String label){
    JButton btn = new JButton();
    if (label != null){
      btn.setText(label);
    }
    //JButton btn = new JButton(label);
    //btn.setBackground(chosenColor);
    btn.setIcon(new ColorIcon(chosenColor));
    btn.addActionListener(
        new ActionListener(){
          public void actionPerformed(ActionEvent ev){
            Color c = JColorChooser.showDialog(instance, "Choose Your Color", chosenColor);
            if (c != null){
              chosenColor = c;
              //selection.setBackground(c);
              selection.setIcon(new ColorIcon(c));
            }
          }
        }
    );
    return btn;
  }

}