/*
* $Id: PdfStructureTreeRoot.java 4784 2011-03-15 08:33:00Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2011 1T3XT BVBA
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text.pdf;
import java.io.IOException;
import java.util.HashMap;
/**
* The structure tree root corresponds to the highest hierarchy level in a tagged PDF.
* @author Paulo Soares
*/
public class PdfStructureTreeRoot extends PdfDictionary {
private HashMap<Integer, PdfObject> parentTree = new HashMap<Integer, PdfObject>();
private PdfIndirectReference reference;
/**
* Holds value of property writer.
*/
private PdfWriter writer;
/** Creates a new instance of PdfStructureTreeRoot */
PdfStructureTreeRoot(PdfWriter writer) {
super(PdfName.STRUCTTREEROOT);
this.writer = writer;
reference = writer.getPdfIndirectReference();
}
/**
* Maps the user tags to the standard tags. The mapping will allow a standard application to make some sense of the tagged
* document whatever the user tags may be.
* @param used the user tag
* @param standard the standard tag
*/
public void mapRole(PdfName used, PdfName standard) {
PdfDictionary rm = (PdfDictionary)get(PdfName.ROLEMAP);
if (rm == null) {
rm = new PdfDictionary();
put(PdfName.ROLEMAP, rm);
}
rm.put(used, standard);
}
/**
* Gets the writer.
* @return the writer
*/
public PdfWriter getWriter() {
return this.writer;
}
/**
* Gets the reference this object will be written to.
* @return the reference this object will be written to
* @since 2.1.6 method removed in 2.1.5, but restored in 2.1.6
*/
public PdfIndirectReference getReference() {
return this.reference;
}
void setPageMark(int page, PdfIndirectReference struc) {
Integer i = Integer.valueOf(page);
PdfArray ar = (PdfArray)parentTree.get(i);
if (ar == null) {
ar = new PdfArray();
parentTree.put(i, ar);
}
ar.add(struc);
}
private void nodeProcess(PdfDictionary struc, PdfIndirectReference reference) throws IOException {
PdfObject obj = struc.get(PdfName.K);
if (obj != null && obj.isArray() && !(((PdfArray)obj).getPdfObject(0)).isNumber()) {
PdfArray ar = (PdfArray)obj;
for (int k = 0; k < ar.size(); ++k) {
PdfStructureElement e = (PdfStructureElement)ar.getAsDict(k);
ar.set(k, e.getReference());
nodeProcess(e, e.getReference());
}
}
if (reference != null)
writer.addToBody(struc, reference);
}
void buildTree() throws IOException {
HashMap<Integer, PdfIndirectReference> numTree = new HashMap<Integer, PdfIndirectReference>();
for (Integer i: parentTree.keySet()) {
PdfArray ar = (PdfArray)parentTree.get(i);
numTree.put(i, writer.addToBody(ar).getIndirectReference());
}
PdfDictionary dicTree = PdfNumberTree.writeTree(numTree, writer);
if (dicTree != null)
put(PdfName.PARENTTREE, writer.addToBody(dicTree).getIndirectReference());
nodeProcess(this, reference);
}
}
|