/*
* 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.markup.html.image.resource;
import java.awt.image.BufferedImage;
import org.apache.wicket.request.resource.DynamicImageResource;
/**
* A DynamicImageResource subclass that holds a BufferedImage generated by code elsewhere. The image
* is held in a non-transient field, and so if this resource is clustered, the entire image will be
* serialized and copied. If you can regenerate your image by drawing on a Graphics2D, you should
* prefer the RenderedDynamicImageResource class instead since its image data is transient and
* therefore it is very lightweight when clustered.
* <p>
* The format of the image (and therefore the resource's extension) can be specified with
* setFormat(String). The default format is "PNG" because JPEG is lossy and makes generated images
* look bad and GIF has patent issues.
*
* @see org.apache.wicket.markup.html.image.resource.RenderedDynamicImageResource
* @author Jonathan Locke
*/
public class BufferedDynamicImageResource extends DynamicImageResource
{
private static final long serialVersionUID = 1L;
/** The byte array holding the contents of the dynamic image */
private byte[] imageData;
/**
* Construct.
*/
public BufferedDynamicImageResource()
{
}
/**
* Construct.
*
* @param format
*/
public BufferedDynamicImageResource(String format)
{
super(format);
}
/**
* @param image
* The image to set
*/
public synchronized void setImage(final BufferedImage image)
{
imageData = toImageData(image);
}
@Override
protected byte[] getImageData(Attributes attributes)
{
return imageData;
}
}