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authorJeremias Maerki <jeremias@apache.org>2003-03-11 13:05:43 +0000
committerJeremias Maerki <jeremias@apache.org>2003-03-11 13:05:43 +0000
commit1e5d512c216d329effa693b91ef64652945def6a (patch)
tree5bd3521ee8121eade7bf1909ceaf29cfc0263fd1 /src/java/org/apache/fop/pdf/PDFOutline.java
parent73c824d39411bf11ad0c2f4e1c57cd9c484665f9 (diff)
downloadxmlgraphics-fop-1e5d512c216d329effa693b91ef64652945def6a.tar.gz
xmlgraphics-fop-1e5d512c216d329effa693b91ef64652945def6a.zip
Moved sources from src/org/** to src/java/org/**
git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@196061 13f79535-47bb-0310-9956-ffa450edef68
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+/*
+ * $Id: PDFOutline.java,v 1.7 2003/03/07 08:25:47 jeremias Exp $
+ * ============================================================================
+ * 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;
+
+import java.util.List;
+
+/**
+ * This represents a single Outline object in a PDF, including the root Outlines
+ * object. Outlines provide the bookmark bar, usually rendered to the right of
+ * a PDF document in user agents such as Acrobat Reader
+ *
+ * @author Kelly A. Campbell
+ *
+ */
+public class PDFOutline extends PDFObject {
+
+ /**
+ * list of sub-entries (outline objects)
+ */
+ private List subentries;
+
+ /**
+ * parent outline object. Root Outlines parent is null
+ */
+ private PDFOutline parent;
+
+ private PDFOutline prev;
+ private PDFOutline next;
+
+ private PDFOutline first;
+ private PDFOutline last;
+
+ private int count;
+
+ /**
+ * title to display for the bookmark entry
+ */
+ private String title;
+
+ private String actionRef;
+
+ /**
+ * Create a PDF outline with the title and action.
+ *
+ * @param number the object id number
+ * @param title the title of the outline entry (can only be null for root Outlines obj)
+ * @param action the action for this outline
+ */
+ public PDFOutline(int number, String title, String action) {
+ super(number);
+ subentries = new java.util.ArrayList();
+ count = 0;
+ parent = null;
+ prev = null;
+ next = null;
+ first = null;
+ last = null;
+ this.title = title;
+ actionRef = action;
+ }
+
+ /**
+ * Set the title of this Outline object.
+ *
+ * @param t the title of the outline
+ */
+ public void setTitle(String t) {
+ title = t;
+ }
+
+ /**
+ * Add a sub element to this outline.
+ *
+ * @param outline a sub outline
+ */
+ public void addOutline(PDFOutline outline) {
+ if (subentries.size() > 0) {
+ outline.prev =
+ (PDFOutline)subentries.get(subentries.size() - 1);
+ outline.prev.next = outline;
+ } else {
+ first = outline;
+ }
+
+ subentries.add(outline);
+ outline.parent = this;
+
+ // note: count is not just the immediate children
+ incrementCount();
+
+ last = outline;
+ }
+
+ /**
+ * Increment the number of subentries and descendants.
+ */
+ private void incrementCount() {
+ // count is a total of our immediate subentries
+ // and all descendent subentries
+ count++;
+ if (parent != null) {
+ parent.incrementCount();
+ }
+ }
+
+ /**
+ * represent the object in PDF
+ *
+ * @return the PDF for this outline
+ */
+ protected byte[] toPDF() {
+ StringBuffer result = new StringBuffer(this.number + " "
+ + this.generation
+ + " obj\n<<\n");
+ if (parent == null) {
+ // root Outlines object
+ if (first != null && last != null) {
+ result.append(" /First " + first.referencePDF() + "\n");
+ result.append(" /Last " + last.referencePDF() + "\n");
+ // no count... we start with the outline completely closed for now
+ }
+ } else {
+ // subentry Outline object
+ result.append(" /Title (" + escapeString(title) + ")\n");
+ result.append(" /Parent " + parent.referencePDF() + "\n");
+ if (first != null && last != null) {
+ result.append(" /First " + first.referencePDF() + "\n");
+ result.append(" /Last " + last.referencePDF() + "\n");
+ }
+ if (prev != null) {
+ result.append(" /Prev " + prev.referencePDF() + "\n");
+ }
+ if (next != null) {
+ result.append(" /Next " + next.referencePDF() + "\n");
+ }
+ if (count > 0) {
+ result.append(" /Count -" + count + "\n");
+ }
+
+ if (actionRef != null) {
+ result.append(" /A " + actionRef + "\n");
+ }
+
+
+ }
+ result.append(">> endobj\n");
+ return result.toString().getBytes();
+
+ }
+
+ /**
+ * escape string (see 3.8.1 in PDF reference 2nd edition)
+ */
+ private String escapeString(String s) {
+ StringBuffer result = new StringBuffer();
+ if (s != null) {
+ int l = s.length();
+
+ // byte order marker (0xfeff)
+ result.append("\\376\\377");
+
+ for (int i = 0; i < l; i++) {
+ char ch = s.charAt(i);
+ int high = (ch & 0xff00) >>> 8;
+ int low = ch & 0xff;
+ result.append("\\");
+ result.append(Integer.toOctalString(high));
+ result.append("\\");
+ result.append(Integer.toOctalString(low));
+ }
+ }
+
+ return result.toString();
+ }
+
+}