From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001 From: tknall Date: Fri, 1 Dec 2006 12:20:24 +0000 Subject: Initial import of release 2.2. git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- src/main/java/com/lowagie/text/pdf/PdfPages.java | 205 +++++++++++++++++++++++ 1 file changed, 205 insertions(+) create mode 100644 src/main/java/com/lowagie/text/pdf/PdfPages.java (limited to 'src/main/java/com/lowagie/text/pdf/PdfPages.java') diff --git a/src/main/java/com/lowagie/text/pdf/PdfPages.java b/src/main/java/com/lowagie/text/pdf/PdfPages.java new file mode 100644 index 0000000..cdc85a3 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/PdfPages.java @@ -0,0 +1,205 @@ +/* + * $Id: PdfPages.java,v 1.58 2006/02/16 16:17:52 psoares33 Exp $ + * $Name: $ + * + * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie + * + * The contents of this file are subject to the Mozilla Public License Version 1.1 + * (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.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the License. + * + * The Original Code is 'iText, a free JAVA-PDF library'. + * + * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by + * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. + * All Rights Reserved. + * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer + * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. + * + * Contributor(s): all the names of the contributors are added in the source code + * where applicable. + * + * Alternatively, the contents of this file may be used under the terms of the + * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the + * provisions of LGPL are applicable instead of those above. If you wish to + * allow use of your version of this file only under the terms of the LGPL + * License and not to allow others to use your version of this file under + * the MPL, indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by the LGPL. + * If you do not delete the provisions above, a recipient may use your version + * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. + * + * This library is free software; you can redistribute it and/or modify it + * under the terms of the MPL as stated above or under the terms of the GNU + * Library General Public License as published by the Free Software Foundation; + * either version 2 of the License, or any later version. + * + * This library 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 Library general Public License for more + * details. + * + * If you didn't download this code from the following link, you should check if + * you aren't using an obsolete version: + * http://www.lowagie.com/iText/ + */ + +package com.lowagie.text.pdf; + +import java.io.IOException; +import java.util.ArrayList; + +import com.lowagie.text.DocumentException; +import com.lowagie.text.ExceptionConverter; + +/** + * PdfPages is the PDF Pages-object. + *

+ * The Pages of a document are accessible through a tree of nodes known as the Pages tree. + * This tree defines the ordering of the pages in the document.
+ * This object is described in the 'Portable Document Format Reference Manual version 1.3' + * section 6.3 (page 71-73) + * + * @see PdfPage + */ + +public class PdfPages { + + private ArrayList pages = new ArrayList(); + private ArrayList parents = new ArrayList(); + private int leafSize = 10; + private PdfWriter writer; + private PdfIndirectReference topParent; + + // constructors + +/** + * Constructs a PdfPages-object. + */ + + PdfPages(PdfWriter writer) { + this.writer = writer; + } + + void addPage(PdfDictionary page) { + try { + if ((pages.size() % leafSize) == 0) + parents.add(writer.getPdfIndirectReference()); + PdfIndirectReference parent = (PdfIndirectReference)parents.get(parents.size() - 1); + page.put(PdfName.PARENT, parent); + PdfIndirectReference current = writer.getCurrentPage(); + writer.addToBody(page, current); + pages.add(current); + } + catch (Exception e) { + throw new ExceptionConverter(e); + } + } + + PdfIndirectReference addPageRef(PdfIndirectReference pageRef) { + try { + if ((pages.size() % leafSize) == 0) + parents.add(writer.getPdfIndirectReference()); + pages.add(pageRef); + return (PdfIndirectReference)parents.get(parents.size() - 1); + } + catch (Exception e) { + throw new ExceptionConverter(e); + } + } + + // returns the top parent to include in the catalog + PdfIndirectReference writePageTree() throws IOException { + if (pages.size() == 0) + throw new IOException("The document has no pages."); + int leaf = 1; + ArrayList tParents = parents; + ArrayList tPages = pages; + ArrayList nextParents = new ArrayList(); + while (true) { + leaf *= leafSize; + int stdCount = leafSize; + int rightCount = tPages.size() % leafSize; + if (rightCount == 0) + rightCount = leafSize; + for (int p = 0; p < tParents.size(); ++p) { + int count; + int thisLeaf = leaf; + if (p == tParents.size() - 1) { + count = rightCount; + thisLeaf = pages.size() % leaf; + if (thisLeaf == 0) + thisLeaf = leaf; + } + else + count = stdCount; + PdfDictionary top = new PdfDictionary(PdfName.PAGES); + top.put(PdfName.COUNT, new PdfNumber(thisLeaf)); + PdfArray kids = new PdfArray(); + ArrayList internal = kids.getArrayList(); + internal.addAll(tPages.subList(p * stdCount, p * stdCount + count)); + top.put(PdfName.KIDS, kids); + if (tParents.size() > 1) { + if ((p % leafSize) == 0) + nextParents.add(writer.getPdfIndirectReference()); + top.put(PdfName.PARENT, (PdfIndirectReference)nextParents.get(p / leafSize)); + } + writer.addToBody(top, (PdfIndirectReference)tParents.get(p)); + } + if (tParents.size() == 1) { + topParent = (PdfIndirectReference)tParents.get(0); + return topParent; + } + tPages = tParents; + tParents = nextParents; + nextParents = new ArrayList(); + } + } + + PdfIndirectReference getTopParent() { + return topParent; + } + + void setLinearMode(PdfIndirectReference topParent) { + if (parents.size() > 1) + throw new RuntimeException("Linear page mode can only be called with a single parent."); + if (topParent != null) { + this.topParent = topParent; + parents.clear(); + parents.add(topParent); + } + leafSize = 10000000; + } + + void addPage(PdfIndirectReference page) { + pages.add(page); + } + + int reorderPages(int order[]) throws DocumentException { + if (order == null) + return pages.size(); + if (parents.size() > 1) + throw new DocumentException("Page reordering requires a single parent in the page tree. Call PdfWriter.setLinearMode() after open."); + if (order.length != pages.size()) + throw new DocumentException("Page reordering requires an array with the same size as the number of pages."); + int max = pages.size(); + boolean temp[] = new boolean[max]; + for (int k = 0; k < max; ++k) { + int p = order[k]; + if (p < 1 || p > max) + throw new DocumentException("Page reordering requires pages between 1 and " + max + ". Found " + p + "."); + if (temp[p - 1]) + throw new DocumentException("Page reordering requires no page repetition. Page " + p + " is repeated."); + temp[p - 1] = true; + } + Object copy[] = pages.toArray(); + for (int k = 0; k < max; ++k) { + pages.set(k, copy[order[k] - 1]); + } + return max; + } +} \ No newline at end of file -- cgit v1.2.3