org.directwebremoting.impl.ImageIOFileGenerator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of dwr Show documentation

DWR is easy Ajax for Java. It makes it simple to call Java code directly from Javascript. It gets rid of almost all the boiler plate code between the web browser and your Java code.

There is a newer version: 3.0.2-RELEASE

Show newest version

/*
 * Copyright 2005 Joe Walker
 *
 * Licensed 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.directwebremoting.impl;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;

import javax.imageio.ImageIO;

/**
 * A way to convert {@link BufferedImage}s to files so they can be written
 * using a FileServingServlet or similar.
 * @author Joe Walker [joe at getahead dot ltd dot uk]
 */
public class ImageIOFileGenerator extends AbstractFileGenerator
{
    /**
     * Setup the image to convert
     * @param image the image to convert
     * @param mimeType The mime type to convert the image into
     * @param type {@link ImageIO} type
     */
    public ImageIOFileGenerator(BufferedImage image, String mimeType, String basename, String type)
    {
        super(basename + "." + type, mimeType);
        this.image = image;
        this.type = type;
    }

    /* (non-Javadoc)
     * @see org.directwebremoting.extend.DownloadManager.FileGenerator#generateFile(java.io.OutputStream)
     */
    public void generateFile(OutputStream out) throws IOException
    {
        ImageIO.write(image, type, out);
    }

    /**
     * The extension for the filename to go with the mime-type
     */
    protected String type;

    /**
     * The image that we are about to export
     */
    protected final BufferedImage image;
}