RandomColorFactory.java

/*
 * Copyright (c) 2009 Piotr Piastucki
 * 
 * This file is part of Patchca CAPTCHA library.
 * 
 *  Patchca is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  
 *  Patchca 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 Lesser General Public License for more details.
 *  
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Patchca. If not, see <http://www.gnu.org/licenses/>.
 */
package com.xiongyingqi.captcha.color;

import java.awt.*;
import java.util.Random;

public class RandomColorFactory implements ColorFactory {

    private Color min;
    private Color max;
    private Color color;

    public RandomColorFactory() {
        min = new Color(20, 40, 80);
        max = new Color(21, 50, 140);
    }

    public void setMin(Color min) {
        this.min = min;
    }

    public void setMax(Color max) {
        this.max = max;
    }

    @Override
    public Color getColor(int index) {
        if (color == null) {
            Random r = new Random();
            color = new Color(min.getRed() + r.nextInt((max.getRed() - min.getRed())),
                    min.getGreen() + r.nextInt((max.getGreen() - min.getGreen())),
                    min.getBlue() + r.nextInt((max.getBlue() - min.getBlue())));
        }
        return color;
    }

}