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: PDFEventProducer.java 1608161 2014-07-06 04:32:11Z gadams $ */

package org.apache.fop.render.pdf;

import org.apache.fop.events.EventBroadcaster;
import org.apache.fop.events.EventProducer;


Event producer interface for events generated by the PDF renderer.

/**
 * Event producer interface for events generated by the PDF renderer.
 */
public interface PDFEventProducer extends EventProducer {

    
Provider class for the event producer. 
/** Provider class for the event producer. */
    final class Provider {

        
Utility classes should not have a public or default constructor.

/**
         * Utility classes should not have a public or default constructor.
         */
        private Provider() { }

        
Returns an event producer.

Params:
  • broadcaster – the event broadcaster to use
Returns:the event producer
/**
         * Returns an event producer.
         * @param broadcaster the event broadcaster to use
         * @return the event producer
         */
        public static PDFEventProducer get(EventBroadcaster broadcaster) {
            return broadcaster.getEventProducerFor(PDFEventProducer.class);
        }
    }

    
Some link targets haven't been fully resolved.

Params:
  • source – the event source
  • count – the number of unresolved links
@event.severityWARN
/**
     * Some link targets haven't been fully resolved.
     * @param source the event source
     * @param count the number of unresolved links
     * @event.severity WARN
     */
    void nonFullyResolvedLinkTargets(Object source, int count);


    
Custom structure type is not standard as per the PDF reference.

Params:
  • source – the event source
  • type – custom structure type
  • fallback – default structure type used as a fallback
@event.severityWARN
/**
     * Custom structure type is not standard as per the PDF reference.
     *
     * @param source the event source
     * @param type custom structure type
     * @param fallback default structure type used as a fallback
     * @event.severity WARN
     */
    void nonStandardStructureType(Object source, String type, String fallback);

    
The encryption length must be a multiple of 8 between 40 and 128.

Params:
  • source – the event source
  • originalValue – requested encryption length
  • correctedValue – corrected encryption length
@event.severityWARN
/**
     * The encryption length must be a multiple of 8 between 40 and 128.
     *
     * @param source the event source
     * @param originalValue requested encryption length
     * @param correctedValue corrected encryption length
     * @event.severity WARN
     */
    void incorrectEncryptionLength(Object source, int originalValue, int correctedValue);

    
The language of a piece of text is unknown.

Params:
  • source – the event source
  • location – location in the source FO file, if any
/**
     * The language of a piece of text is unknown.
     *
     * @param source the event source
     * @param location location in the source FO file, if any
     */
    void unknownLanguage(Object source, String location);

}