Java Color Darker getDarkColors(Color[] colors, double fraction)

Description

get Dark Colors

License

Open Source License

Declaration

public static Color[] getDarkColors(Color[] colors, double fraction) 

Method Source Code

//package com.java2s;
/*//from  ww w  .j av a2 s .  c o m
Storybook: Scene-based software for novelists and authors.
Copyright (C) 2008 - 2011 Martin Mustun
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program 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 General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.Color;

public class Main {
    public static Color[] getDarkColors(Color[] colors, double fraction) {
        Color[] darkColors = new Color[colors.length];
        int i = 0;
        for (Color color : colors) {
            darkColors[i] = darker(color, fraction);
            ++i;
        }
        return darkColors;
    }

    /**
     * Make a color darker.
     *
     * @param color
     *            Color to make darker.
     * @param fraction
     *            Darkness fraction.
     * @return Darker color.
     */
    public static Color darker(Color color, double fraction) {
        int red = (int) Math.round(color.getRed() * (1.0 - fraction));
        int green = (int) Math.round(color.getGreen() * (1.0 - fraction));
        int blue = (int) Math.round(color.getBlue() * (1.0 - fraction));

        if (red < 0)
            red = 0;
        else if (red > 255)
            red = 255;
        if (green < 0)
            green = 0;
        else if (green > 255)
            green = 255;
        if (blue < 0)
            blue = 0;
        else if (blue > 255)
            blue = 255;

        int alpha = color.getAlpha();

        return new Color(red, green, blue, alpha);
    }
}

Related

1. darkerColor(Color color, double factor)
2. darkerColor(String hexValue)
3. deriveColor(Color orig, int darker)
4. draw3DFrame(Graphics g, Rectangle rect, Color colorBackground, Color colorDark, Color colorLight)
5. getDarkColor()
6. getDarker(Color c)
7. getDarker(Color color)
8. getDarker(Color color, double factor)
9. getDarkerColor(Color color)