/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.wicket.examples.captcha;
import java.awt.image.BufferedImage;
import java.util.Properties;
import org.apache.wicket.extensions.markup.html.captcha.CaptchaImageResource;
import com.google.code.kaptcha.impl.DefaultKaptcha;
import com.google.code.kaptcha.util.Config;
/**
* A demo form that shows how to use <a href="https://github.com/axet/kaptcha">Kaptcha</a>
* library
*/
public class KaptchaForm<T> extends AbstractCaptchaForm<T>
{
private static final long serialVersionUID = 1L;
/**
* Constructor.
*
* @param id
* The component id
*/
public KaptchaForm(String id)
{
super(id);
}
@Override
protected CaptchaImageResource createCaptchaImageResource()
{
return new CaptchaImageResource()
{
@Override
protected byte[] render()
{
DefaultKaptcha kaptcha = new DefaultKaptcha();
Properties properties = new Properties();
kaptcha.setConfig(new Config(properties));
randomText = Captcha.randomString(6, 8);
BufferedImage image = kaptcha.createImage(randomText);
return toImageData(image);
}
};
}
}