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Java > Open Source Codes > org > apache > fop > pdf > PDFLink


1 /*
2  * $Id: PDFLink.java,v 1.6.2.2 2003/02/25 14:29:37 jeremias Exp $
3  * ============================================================================
4  * The Apache Software License, Version 1.1
5  * ============================================================================
6  *
7  * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without modifica-
10  * tion, are permitted provided that the following conditions are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright notice,
13  * this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
17  * and/or other materials provided with the distribution.
18  *
19  * 3. The end-user documentation included with the redistribution, if any, must
20  * include the following acknowledgment: "This product includes software
21  * developed by the Apache Software Foundation (http://www.apache.org/)."
22  * Alternately, this acknowledgment may appear in the software itself, if
23  * and wherever such third-party acknowledgments normally appear.
24  *
25  * 4. The names "FOP" and "Apache Software Foundation" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * apache@apache.org.
29  *
30  * 5. Products derived from this software may not be called "Apache", nor may
31  * "Apache" appear in their name, without prior written permission of the
32  * Apache Software Foundation.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
35  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
36  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
37  * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
38  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
39  * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
40  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
41  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
42  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
43  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44  * ============================================================================
45  *
46  * This software consists of voluntary contributions made by many individuals
47  * on behalf of the Apache Software Foundation and was originally created by
48  * James Tauber <jtauber@jtauber.com>. For more information on the Apache
49  * Software Foundation, please see <http://www.apache.org/>.
50  */
51 package org.apache.fop.pdf;
52
53 // Java
54 import java.awt.Rectangle JavaDoc;
55 import java.io.UnsupportedEncodingException JavaDoc;
56
57 /**
58  * class representing an /Annot object of /Subtype /Link
59  */
60 public class PDFLink extends PDFObject {
61
62     float ulx;
63     float uly;
64     float brx;
65     float bry;
66     String JavaDoc color;
67     PDFAction action;
68
69     /**
70      * create objects associated with a link annotation (GoToR)
71      *
72      * @param number the object's number
73      * @param producer the application producing the PDF
74      */
75     public PDFLink(int number, Rectangle JavaDoc r) {
76         /* generic creation of PDF object */
77         super(number);
78
79         this.ulx = r.x;
80         this.uly = r.y;
81         this.brx = r.x + r.width;
82         this.bry = r.y - r.height;
83         this.color = "0 0 0"; // just for now
84
85     }
86
87     public void setAction(PDFAction action) {
88         this.action = action;
89     }
90
91     /**
92      * produce the PDF representation of the object
93      *
94      * @return the PDF
95      */
96     public byte[] toPDF() {
97         String JavaDoc p = this.number + " " + this.generation + " obj\n"
98                    + "<< /Type /Annot\n" + "/Subtype /Link\n" + "/Rect [ "
99                    + (ulx / 1000f) + " " + (uly / 1000f) + " "
100                    + (brx / 1000f) + " " + (bry / 1000f) + " ]\n" + "/C [ "
101                    + this.color + " ]\n" + "/Border [ 0 0 0 ]\n" + "/A "
102                    + this.action.getAction() + "\n" + "/H /I\n>>\nendobj\n";
103
104         try {
105             return p.getBytes(PDFDocument.ENCODING);
106         } catch (UnsupportedEncodingException JavaDoc ue) {
107             return p.getBytes();
108         }
109     }
110
111     /*
112      * example
113      * 19 0 obj
114      * <<
115      * /Type /Annot
116      * /Subtype /Link
117      * /Rect [ 176.032 678.48412 228.73579 692.356 ]
118      * /C [ 0.86491 0.03421 0.02591 ]
119      * /Border [ 0 0 1 ]
120      * /A 28 0 R
121      * /H /I
122      * >>
123      * endobj
124      */
125 }
126
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