http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
/*
 * 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.
 */

/* $Id: ImageHandlerBase.java 1805173 2017-08-16 10:50:04Z ssteiner $ */

package org.apache.fop.render;

import org.apache.xmlgraphics.image.loader.ImageFlavor;


This interface is a service provider base interface for image handlers. It only contains
methods necessary for registration and is extended by sub-interfaces with the actual
image handling contract.

/**
 * This interface is a service provider base interface for image handlers. It only contains
 * methods necessary for registration and is extended by sub-interfaces with the actual
 * image handling contract.
 */
public interface ImageHandlerBase {

    
Returns the priority for this image handler. A lower value means higher priority. This
information is used to build the ordered/prioritized list of supported ImageFlavors.
The built-in handlers use priorities between 100 and 999.

Returns:a positive integer (>0) indicating the priority
/**
     * Returns the priority for this image handler. A lower value means higher priority. This
     * information is used to build the ordered/prioritized list of supported ImageFlavors.
     * The built-in handlers use priorities between 100 and 999.
     * @return a positive integer (>0) indicating the priority
     */
    int getPriority();

    
Returns the ImageFlavors supported by this instance 
Returns:the supported image flavors
/**
     * Returns the {@link ImageFlavor}s supported by this instance
     * @return the supported image flavors
     */
    ImageFlavor[] getSupportedImageFlavors();

    
Returns the Class subclass supported by this instance. 
Returns:the image Class type
/**
     * Returns the {@link Class} subclass supported by this instance.
     * @return the image Class type
     */
    Class getSupportedImageClass();
}