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


1 /*
2  * $Id: PDFWArray.java,v 1.4.2.4 2003/02/25 14:29:38 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.io.UnsupportedEncodingException JavaDoc;
55 import java.util.ArrayList JavaDoc;
56
57 /**
58  * class representing a <b>W</b> array for CID fonts.
59  */

60 public class PDFWArray {
61
62     /**
63      * the metrics
64      */

65     private ArrayList JavaDoc entries;
66
67     public PDFWArray() {
68         entries = new ArrayList JavaDoc();
69     }
70
71     /**
72      * add an entry for single starting CID.
73      * i.e. in the form "c [w ...]"
74      *
75      * @param start the starting CID value.
76      * @param metrics the metrics array.
77      */

78     public void addEntry(int start, int[] metrics) {
79         entries.add(new Entry(start, metrics));
80     }
81
82     /**
83      * add an entry for a range of CIDs (/W element on p 213)
84      *
85      * @param first the first CID in the range
86      * @param last the last CID in the range
87      * @param width the width for all CIDs in the range
88      */

89     public void addEntry(int first, int last, int width) {
90         entries.add(new int[] {
91             first, last, width
92         });
93     }
94
95     /**
96      * add an entry for a range of CIDs (/W2 element on p 210)
97      *
98      * @param first the first CID in the range
99      * @param last the last CID in the range
100      * @param width the width for all CIDs in the range
101      * @param posX the x component for the vertical position vector
102      * @param posY the y component for the vertical position vector
103      */

104     public void addEntry(int first, int last, int width, int posX, int posY) {
105         entries.add(new int[] {
106             first, last, width, posX, posY
107         });
108     }
109
110     public byte[] toPDF() {
111         try {
112             return toPDFString().getBytes(PDFDocument.ENCODING);
113         } catch (UnsupportedEncodingException JavaDoc ue) {
114             return toPDFString().getBytes();
115         }
116     }
117
118     public String JavaDoc toPDFString() {
119         StringBuffer JavaDoc p = new StringBuffer JavaDoc();
120         p.append("[ ");
121         int len = entries.size();
122         for (int i = 0; i < len; i++) {
123             Object JavaDoc entry = entries.get(i);
124             if (entry instanceof int[]) {
125                 int[] line = (int[])entry;
126                 for (int j = 0; j < line.length; j++) {
127                     p.append(line[j]);
128                     p.append(" ");
129                 }
130             } else {
131                 ((Entry)entry).fillInPDF(p);
132             }
133         }
134         p.append("]");
135         return p.toString();
136     }
137
138     /**
139      * inner class for entries in the form "c [w ...]"
140      */

141     private static class Entry {
142         private static final StringBuffer JavaDoc p = new StringBuffer JavaDoc();
143         private int start;
144         private int[] metrics;
145         public Entry(int s, int[] m) {
146             start = s;
147             metrics = m;
148         }
149
150         public void fillInPDF(StringBuffer JavaDoc p) {
151             // p.setLength(0);
152
p.append(start);
153             p.append(" [");
154             for (int i = 0; i < metrics.length; i++) {
155                 p.append(this.metrics[i]);
156                 p.append(" ");
157             }
158             p.append("] ");
159         }
160
161     }
162 }
163
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