Java Color Darker withAlphaAdjustingDarkness(Color c, double d)

Description

with Alpha Adjusting Darkness

License

Apache License

Declaration

public static Color withAlphaAdjustingDarkness(Color c, double d) 

Method Source Code

//package com.java2s;
/*/*from  www.  ja  va 2  s .  c o  m*/
 * Copyright 2000-2012 JetBrains s.r.o.
 *
 * 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.*;

public class Main {
    public static Color withAlphaAdjustingDarkness(Color c, double d) {
        return shift(withAlpha(c, d), d);
    }

    private static int shift(int colorComponent, double d) {
        final int n = (int) (colorComponent * d);
        return n > 255 ? 255 : n < 0 ? 0 : n;
    }

    public static Color shift(Color c, double d) {
        return new Color(shift(c.getRed(), d), shift(c.getGreen(), d), shift(c.getBlue(), d), c.getAlpha());
    }

    public static Color withAlpha(Color c, double a) {
        return toAlpha(c, (int) (255 * a));
    }

    public static Color toAlpha(Color color, int a) {
        Color c = color != null ? color : Color.black;
        return new Color(c.getRed(), c.getGreen(), c.getBlue(), a);
    }
}

Related

1. initializePattern(Color light, Color dark)
2. makeDarker(final Color color, final double percentage)
3. reallyDark(Color c)
4. setColorsDarkTheme()
5. slightlyDarker(Color color)