Apply sepia to the given color - Android Graphics

Android examples for Graphics:Color

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Description

Apply sepia to the given color

Demo Code

/*******************************************************************************
 * Copyright (c) 2011 MadRobot.//from   w ww.j a va  2s . c  o  m
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *  Elton Kent - initial API and implementation
 ******************************************************************************/
//package com.java2s;

public class Main {
    /**
     * Apply sepia to the given color
     * 
     * @param color
     *            argb value
     * @param depth
     *            sepia depth , optimal is 20
     * @return
     */
    public static int applySepia(int color, int depth) {
        int a = (color >> 24) & 0xff;
        int r = (color >> 16) & 0xff;
        int g = (color >> 8) & 0xff;
        int b = color & 0xff;

        int gry = (r + g + b) / 3;
        r = g = b = gry;

        r = r + (depth * 2);
        g = g + depth;
        if (r > 255) {
            r = 255;
        }
        if (g > 255) {
            g = 255;
        }
        return toRGB(a, r, g, b);
    }

    /**
     * 
     * @param alpha
     * @param red
     * @param green
     * @param blue
     * @return
     */
    public static int toRGB(int alpha, int red, int green, int blue) {
        return (alpha & 0xff) << 24 | (red & 0xff) << 16
                | (green & 0xff) << 8 | (blue & 0xff) << 0;
    }
}

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