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: PDFXObject.java 1305467 2012-03-26 17:39:20Z vhennebert $ */

package org.apache.fop.pdf;

// Java
import java.io.IOException;


Abstract base class of PDF XObjects.
A derivative of the PDF Object, is a PDF Stream that has not only a
dictionary but a stream of image data.
The dictionary just provides information like the stream length.
This outputs the image dictionary and the image data.
This is used as a reference for inserting the same image in the
document in another place.

/**
 * Abstract base class of PDF XObjects.
 *
 * A derivative of the PDF Object, is a PDF Stream that has not only a
 * dictionary but a stream of image data.
 * The dictionary just provides information like the stream length.
 * This outputs the image dictionary and the image data.
 * This is used as a reference for inserting the same image in the
 * document in another place.
 */
public abstract class PDFXObject extends AbstractPDFStream {

    
Create an XObject with the given number.

/**
     * Create an XObject with the given number.
     */
    public PDFXObject() {
        super();
    }

    protected PDFXObject(PDFDictionary dictionary) {
        super(dictionary);
    }

    
Returns the XObject's name.

Returns:the name of the XObject
/**
     * Returns the XObject's name.
     * @return the name of the XObject
     */
    public PDFName getName() {
        return (PDFName)get("Name");
    }

    
{@inheritDoc} 
/** {@inheritDoc} */
    protected void populateStreamDict(Object lengthEntry) {
        put("Type", new PDFName("XObject"));
        super.populateStreamDict(lengthEntry);
    }

    
{@inheritDoc} 
/** {@inheritDoc} */
    protected int getSizeHint() throws IOException {
        return 0;
    }

}