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/*
* $Id$
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "FOP" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ============================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation and was originally created by
* James Tauber <jtauber@jtauber.com>. For more information on the Apache
* Software Foundation, please see <http://www.apache.org/>.
*/
package org.apache.fop.pdf;
// Java
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.HashMap;
import java.util.HashSet;
/**
* class representing a /Resources object.
*
* /Resources object contain a list of references to the fonts for the
* document
*/
public class PDFResources extends PDFObject {
/**
* /Font objects keyed by their internal name
*/
protected Map fonts = new HashMap();
/**
* Set of XObjects
*/
protected Set xObjects = new HashSet();
/**
* Set of patterns
*/
protected Set patterns = new HashSet();
/**
* Set of shadings
*/
protected Set shadings = new HashSet();
/**
* Set of ExtGStates
*/
protected Set gstates = new HashSet();
/**
* create a /Resources object.
*
* @param number the object's number
*/
public PDFResources(int number) {
/* generic creation of object */
super(number);
}
/**
* add font object to resources list.
*
* @param font the PDFFont to add
*/
public void addFont(PDFFont font) {
this.fonts.put(font.getName(), font);
}
/**
* Add a PDFGState to the resources.
*
* @param gs the PDFGState to add
*/
public void addGState(PDFGState gs) {
this.gstates.add(gs);
}
/**
* Add a Shading to the resources.
*
* @param theShading the shading to add
*/
public void addShading(PDFShading theShading) {
this.shadings.add(theShading);
}
/**
* Add the pattern to the resources.
*
* @param thePattern the pattern to add
*/
public void addPattern(PDFPattern thePattern) {
this.patterns.add(thePattern);
}
/**
* Add an XObject to the resources.
*
* @param xObject the XObject to add
*/
public void addXObject(PDFXObject xObject) {
this.xObjects.add(xObject);
}
/**
* represent the object in PDF
* This adds the references to all the objects in the current
* resource context.
*
* @return the PDF
*/
public byte[] toPDF() {
StringBuffer p = new StringBuffer(this.number + " " + this.generation
+ " obj\n<< \n");
if (!this.fonts.isEmpty()) {
p.append("/Font << ");
/* construct PDF dictionary of font object references */
Iterator fontIterator = this.fonts.keySet().iterator();
while (fontIterator.hasNext()) {
String fontName = (String)fontIterator.next();
p.append("/" + fontName + " "
+ ((PDFFont)this.fonts.get(fontName)).referencePDF()
+ " ");
}
p.append(">> \n");
}
PDFShading currentShading = null;
if (!this.shadings.isEmpty()) {
p.append("/Shading << ");
for (Iterator iter = shadings.iterator(); iter.hasNext();) {
currentShading = (PDFShading)iter.next();
p.append("/" + currentShading.getName() + " "
+ currentShading.referencePDF() + " "); // \n ??????
}
p.append(">>\n");
}
// "free" the memory. Sorta.
currentShading = null;
PDFPattern currentPattern = null;
if (!this.patterns.isEmpty()) {
p.append("/Pattern << ");
for (Iterator iter = patterns.iterator(); iter.hasNext();) {
currentPattern = (PDFPattern)iter.next();
p.append("/" + currentPattern.getName() + " "
+ currentPattern.referencePDF() + " ");
}
p.append(">> \n");
}
// "free" the memory. Sorta.
currentPattern = null;
p.append("/ProcSet [ /PDF /ImageC /Text ]\n");
if (this.xObjects != null && !this.xObjects.isEmpty()) {
p = p.append("/XObject <<");
for (Iterator iter = xObjects.iterator(); iter.hasNext();) {
PDFXObject xobj = (PDFXObject)iter.next();
p = p.append("/Im" + xobj.getXNumber() + " "
+ xobj.referencePDF()
+ "\n");
}
p = p.append(" >>\n");
}
if (!this.gstates.isEmpty()) {
p = p.append("/ExtGState <<");
for (Iterator iter = gstates.iterator(); iter.hasNext();) {
PDFGState gs = (PDFGState)iter.next();
p = p.append("/" + gs.getName() + " "
+ gs.referencePDF()
+ " ");
}
p = p.append(">>\n");
}
p = p.append(">>\nendobj\n");
return p.toString().getBytes();
}
}
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