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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/PdfPages.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/PdfPages.java | 205 |
1 files changed, 205 insertions, 0 deletions
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;
+
+/**
+ * <CODE>PdfPages</CODE> is the PDF Pages-object.
+ * <P>
+ * 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.<BR>
+ * 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 <CODE>PdfPages</CODE>-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;
+ }
+}
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