/*
 * 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.zhiqiyun.open.core.service.impl.captcha.font;

import java.awt.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Random;

public class RandomFontFactory implements FontFactory {

	protected List<String> families;
	protected int minSize;
	protected int maxSize;
	protected boolean randomStyle;

	public RandomFontFactory() {
		families = new ArrayList<String>();
		families.add("Verdana");
		families.add("Tahoma");
		minSize = 45;
		maxSize = 45;
	}

	public RandomFontFactory(List<String> families) {
		this();
		this.families = families;
	}

	public RandomFontFactory(String[] families) {
		this();
		this.families = Arrays.asList(families);
	}

	public RandomFontFactory(int size, List<String> families) {
		this(families);
		minSize = maxSize = size;
	}

	public RandomFontFactory(int size, String[] families) {
		this(families);
		minSize = maxSize = size;
	}

	public void setFamilies(List<String> families) {
		this.families = families;
	}

	public void setMinSize(int minSize) {
		this.minSize = minSize;
	}

	public void setMaxSize(int maxSize) {
		this.maxSize = maxSize;
	}

	public void setRandomStyle(boolean randomStyle) {
		this.randomStyle = randomStyle;
	}

	@Override
	public Font getFont(int index) {
		Random r = new Random();
		String family = families.get(r.nextInt(families.size()));
		boolean bold = r.nextBoolean() && randomStyle;
		int size = minSize;
		if (maxSize - minSize > 0) {
			size += r.nextInt(maxSize - minSize);
		}
		return new Font(family, bold ? Font.BOLD : Font.PLAIN, size);
	}

}
