Java Swing UIManager disabledIcon(JComponent parent, Icon icon)

Description

Gets a "disabled" icon according to the current look and feel.

License

Open Source License

Parameter

Parameter	Description
parent	the component on which the icon will be painted, can be <code>null</code>
icon	an icon or <code>null</code>

Return

a disabled version of icon or null

Declaration

public static Icon disabledIcon(JComponent parent, Icon icon) 

Method Source Code

//package com.java2s;
/*//from w  ww  . j  a va2 s. c  o m
 * Bibliothek - DockingFrames
 * Library built on Java/Swing, allows the user to "drag and drop"
 * panels containing any Swing-Co
    
mponent the developer likes to add.
 * 
 * Copyright (C) 2007 Benjamin Sigg
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Benjamin Sigg
 * benjamin_sigg@gmx.ch
 * CH - Switzerland
 */

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.UIManager;

public class Main {
    /**
     * Gets a "disabled" icon according to the current look and feel.
     * @param parent the component on which the icon will be painted, can be <code>null</code>
     * @param icon an icon or <code>null</code>
     * @return a disabled version of <code>icon</code> or <code>null</code>
     */
    public static Icon disabledIcon(JComponent parent, Icon icon) {
        if (icon == null)
            return null;

        Icon result = UIManager.getLookAndFeel().getDisabledIcon(parent, icon);
        if (result != null)
            return result;

        if (parent != null) {
            int width = icon.getIconWidth();
            int height = icon.getIconHeight();
            if (width > 0 && height > 0) {
                BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
                Graphics g = image.createGraphics();
                icon.paintIcon(parent, g, 0, 0);
                g.dispose();
                icon = new ImageIcon(image);
                result = UIManager.getLookAndFeel().getDisabledIcon(parent, icon);
            }
        }

        if (result != null)
            return result;

        return icon;
    }
}

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