ColorPickerDialog.java

/*
 * @(#)ColorPickerDialog.java
 *
 * $Date: 2014-06-06 20:04:49 +0200 (P, 06 jún. 2014) $
 *
 * Copyright (c) 2011 by Jeremy Wood.
 * All rights reserved.
 *
 * The copyright of this software is owned by Jeremy Wood. 
 * You may not use, copy or modify this software, except in  
 * accordance with the license agreement you entered into with  
 * Jeremy Wood. For details see accompanying license terms.
 * 
 * This software is probably, but not necessarily, discussed here:
 * https://javagraphics.java.net/
 * 
 * That site should also contain the most recent official version
 * of this software.  (See the SVN repository for more details.)
 */
package com.bric.swing;

import com.bric.swing.DialogFooter.EscapeKeyBehavior;

import javax.swing.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dialog;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/** This wraps a <code>ColorPicker</code> in a simple dialog with "OK" and "Cancel" options.
 * <P>(This object is used by the static calls in <code>ColorPicker</code> to show a dialog.)
 * <br><IMG SRC="https://javagraphics.java.net/resources/colorpicker.png" alt="Screenshot of ColorPickerDialog">
 * 
 * @see ColorPicker
 * @see ColorPickerPanel
 *
 */
class ColorPickerDialog extends JDialog {
    
	private static final long serialVersionUID = 2L;
	
	ColorPicker cp;
	int alpha;
	Color returnValue = null;
	ActionListener okListener = new ActionListener() {
		public void actionPerformed(ActionEvent e) {
			returnValue = cp.getColor();
		}
	};
	DialogFooter footer;
	
	public ColorPickerDialog(Frame owner, Color color,boolean includeOpacity) {
		super(owner);
		initialize(owner,color,includeOpacity);
	}

	public ColorPickerDialog(Dialog owner, Color color,boolean includeOpacity) {
		super(owner);
		initialize(owner,color,includeOpacity);
	}
	
	private void initialize(Component owner,Color color,boolean includeOpacity) {
		cp = new ColorPicker(true,includeOpacity);
		setModal(true);
		setResizable(false);
		getContentPane().setLayout(new GridBagLayout());
		GridBagConstraints c = new GridBagConstraints();
		c.gridx = 0; c.gridy = 0;
		c.weightx = 1; c.weighty = 1; c.fill = GridBagConstraints.BOTH;
		c.gridwidth = GridBagConstraints.REMAINDER;
		c.insets = new Insets(10,10,10,10);
		getContentPane().add(cp,c);
		c.gridy++;
		footer = DialogFooter.createDialogFooter(new JComponent[] {}, 
				DialogFooter.OK_CANCEL_OPTION, DialogFooter.OK_OPTION, EscapeKeyBehavior.TRIGGERS_CANCEL);	
		c.gridy++; c.weighty = 0;
		getContentPane().add(footer, c);
		cp.setRGB(color.getRed(), color.getGreen(), color.getBlue());
		cp.setOpacity( color.getAlpha() );
		alpha = color.getAlpha();
		pack();
        setLocationRelativeTo(owner);
		
		footer.getButton(DialogFooter.OK_OPTION).addActionListener(okListener);
	}
	
	/** @return the color committed when the user clicked 'OK'.  Note this returns <code>null</code>
	 * if the user canceled this dialog, or exited via the close decoration.
	 */
	public Color getColor() {
		return returnValue;
	}
}