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author | Jeremias Maerki <jeremias@apache.org> | 2003-03-11 13:05:43 +0000 |
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committer | Jeremias Maerki <jeremias@apache.org> | 2003-03-11 13:05:43 +0000 |
commit | 1e5d512c216d329effa693b91ef64652945def6a (patch) | |
tree | 5bd3521ee8121eade7bf1909ceaf29cfc0263fd1 /src/java/org/apache/fop/pdf/PDFOutline.java | |
parent | 73c824d39411bf11ad0c2f4e1c57cd9c484665f9 (diff) | |
download | xmlgraphics-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
Diffstat (limited to 'src/java/org/apache/fop/pdf/PDFOutline.java')
-rw-r--r-- | src/java/org/apache/fop/pdf/PDFOutline.java | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/pdf/PDFOutline.java b/src/java/org/apache/fop/pdf/PDFOutline.java new file mode 100644 index 000000000..48e54a981 --- /dev/null +++ b/src/java/org/apache/fop/pdf/PDFOutline.java @@ -0,0 +1,224 @@ +/* + * $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(); + } + +} |