Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Color;

public class Main {
    public static int getScrimColor(int background) {
        double a = getLuminance(background);
        if ((int) (a * 100) <= 50) // it was so close...
            return Color.BLACK;
        else
            return Color.WHITE;
    }

    private static double getLuminance(int color) {
        int r = (color & 0xff0000) >> 16;
        int g = (color & 0xff00) >> 8;
        int b = color & 0xff;
        return getLuminance(r, g, b);
    }

    private static double getLuminance(int r, int g, int b) {
        // Counting the perceptive luminance - human eye favors green color...
        return (0.299 * r + 0.587 * g + 0.114 * b) / 255;
    }
}