Java Color Value getBlueGreyColor(Color base)

Description

get Blue Grey Color

License

Open Source License

Declaration

public static Color getBlueGreyColor(Color base) 

Method Source Code

//package com.java2s;
/*//from w  ww  . j av  a  2 s .  co m
 *  NimbusHelper.java
 *  (SwingOSC)
 *
 *  Copyright (c) 2005-2012 Hanns Holger Rutz. All rights reserved.
 *
 *   This software 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 2, june 1991 of the License, or (at your option) any later version.
 *
 *   This software 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 (gpl.txt) along with this software; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *
 *   For further information, please contact Hanns Holger Rutz at
 *   contact@sciss.de
 */

import javax.swing.UIDefaults;

import java.awt.Color;

public class Main {
    private static UIDefaults nimbusDefaults;
    private static final float[] hsbArr = new float[3];

    public static Color getBlueGreyColor(Color base) {
        final Color c = nimbusDefaults == null ? null : nimbusDefaults.getColor("nimbusBlueGrey");
        return c == null ? defaultBlueGreyColor(base) : c;
    }

    private static Color defaultBlueGreyColor(Color base) {
        return adjustColor(base, 0.032459438f, -0.52518797f, 0.19607842f, 0);
    }

    public static Color adjustColor(Color c, float hueOffset, float satOffset, float briOffset, int alphaOffset) {
        final boolean sameColor = hueOffset == 0f && satOffset == 0f && briOffset == 0f;
        final boolean sameAlpha = alphaOffset == 0;
        if (sameColor) {
            if (sameAlpha)
                return c;
            // don't know what's going on here. nimbus defaults ColorUIResources have alpha values of zero sometimes
            final int cAlpha = /* c.getTransparency() == Transparency.TRANSLUCENT ? */ c.getAlpha() /* : 0xFF */;
            return new Color(c.getRed(), c.getGreen(), c.getBlue(),
                    Math.max(0, Math.min(0xFF, cAlpha + alphaOffset)));
        }

        Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), hsbArr);
        final float hue = hsbArr[0] + hueOffset;
        final float sat = Math.max(0f, Math.min(1f, hsbArr[1] + satOffset));
        final float bri = Math.max(0f, Math.min(1f, hsbArr[2] + briOffset));
        final int rgb = Color.HSBtoRGB(hue, sat, bri);
        // (Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are blue).
        //        final int r = (rgb >> 16) & 0xFF;
        //        final int g = (rgb >> 8) & 0xFF;
        //        final int b = rgb & 0xFF;
        final int cAlpha = /* c.getTransparency() == Transparency.TRANSLUCENT ? */ c.getAlpha() /* : 0xFF */;
        final int a = sameAlpha ? cAlpha : Math.max(0, Math.min(0xFF, cAlpha + alphaOffset));
        final int rgba = (rgb & 0xFFFFFF) | (a << 24);
        return new Color(rgba, true);
    }
}

Related

1. getAsNotUIResource(Color color)
2. getBackgroundColor()
3. getBorder(Color clr, int thickness)
4. getColorBackground()
5. getColorChooser()
6. getColorForeground()