Java Swing Look and Feel isDarkLAF()

Description

is Dark LAF

License

Apache License

Declaration

public static boolean isDarkLAF() 

Method Source Code

//package com.java2s;
/* /*from w  w  w.j a v a2  s. com*/
 * Copyright 2014 Igor Maznitsa (http://www.igormaznitsa.com).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.awt.Color;

import javax.swing.UIManager;

public class Main {
    public static boolean isDarkLAF() {
        final Color panelBack = UIManager.getColor("Panel.background");
        if (panelBack == null) {
            return false;
        } else {
            return calculateBrightness(panelBack) < 150;
        }

    }

    public static int calculateBrightness(final Color color) {
        return (int) Math.sqrt(color.getRed() * color.getRed() * .241d + color.getGreen() * color.getGreen() * .691d
                + color.getBlue() * color.getBlue() * .068d);
    }
}

Related

1. installLookAndFeel()
2. isAqua()
3. isAquaLookAndFeel()
4. isAquaLookAndFeel()
5. isAquaLookAndFeel()
6. isDarkLnf()
7. isDarkResultsBackground()
8. isDefaultLookAndFeel()
9. isGTKLaF()