1 /*
2 * $Id: PdfNumber.java 3759 2009-03-06 16:05:00Z blowagie $
3 *
4 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
5 *
6 * The contents of this file are subject to the Mozilla Public License Version 1.1
7 * (the "License"); you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the License.
13 *
14 * The Original Code is 'iText, a free JAVA-PDF library'.
15 *
16 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
17 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
18 * All Rights Reserved.
19 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
20 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
21 *
22 * Contributor(s): all the names of the contributors are added in the source code
23 * where applicable.
24 *
25 * Alternatively, the contents of this file may be used under the terms of the
26 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
27 * provisions of LGPL are applicable instead of those above. If you wish to
28 * allow use of your version of this file only under the terms of the LGPL
29 * License and not to allow others to use your version of this file under
30 * the MPL, indicate your decision by deleting the provisions above and
31 * replace them with the notice and other provisions required by the LGPL.
32 * If you do not delete the provisions above, a recipient may use your version
33 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
34 *
35 * This library is free software; you can redistribute it and/or modify it
36 * under the terms of the MPL as stated above or under the terms of the GNU
37 * Library General Public License as published by the Free Software Foundation;
38 * either version 2 of the License, or any later version.
39 *
40 * This library is distributed in the hope that it will be useful, but WITHOUT
41 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
42 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
43 * details.
44 *
45 * If you didn't download this code from the following link, you should check if
46 * you aren't using an obsolete version:
47 * http://www.lowagie.com/iText/
48 */
49
50 package com.lowagie.text.pdf;
51
52 /**
53 * <CODE>PdfNumber</CODE> provides two types of numbers, integer and real.
54 * <P>
55 * Integers may be specified by signed or unsigned constants. Reals may only be
56 * in decimal format.<BR>
57 * This object is described in the 'Portable Document Format Reference Manual
58 * version 1.7' section 3.3.2 (page 52-53).
59 *
60 * @see PdfObject
61 * @see BadPdfFormatException
62 */
63 public class PdfNumber extends PdfObject {
64
65 // CLASS VARIABLES
66
67 /**
68 * actual value of this <CODE>PdfNumber</CODE>, represented as a
69 * <CODE>double</CODE>
70 */
71 private double value;
72
73 // CONSTRUCTORS
74
75 /**
76 * Constructs a <CODE>PdfNumber</CODE>-object.
77 *
78 * @param content value of the new <CODE>PdfNumber</CODE>-object
79 */
80 public PdfNumber(String content) {
81 super(NUMBER);
82 try {
83 value = Double.parseDouble(content.trim());
84 setContent(content);
85 }
86 catch (NumberFormatException nfe){
87 throw new RuntimeException(content + " is not a valid number - " + nfe.toString());
88 }
89 }
90
91 /**
92 * Constructs a new <CODE>PdfNumber</CODE>-object of type integer.
93 *
94 * @param value value of the new <CODE>PdfNumber</CODE>-object
95 */
96 public PdfNumber(int value) {
97 super(NUMBER);
98 this.value = value;
99 setContent(String.valueOf(value));
100 }
101
102 /**
103 * Constructs a new <CODE>PdfNumber</CODE>-object of type real.
104 *
105 * @param value value of the new <CODE>PdfNumber</CODE>-object
106 */
107 public PdfNumber(double value) {
108 super(NUMBER);
109 this.value = value;
110 setContent(ByteBuffer.formatDouble(value));
111 }
112
113 /**
114 * Constructs a new <CODE>PdfNumber</CODE>-object of type real.
115 *
116 * @param value value of the new <CODE>PdfNumber</CODE>-object
117 */
118 public PdfNumber(float value) {
119 this((double)value);
120 }
121
122 // methods returning the value of this object
123
124 /**
125 * Returns the primitive <CODE>int</CODE> value of this object.
126 *
127 * @return The value as <CODE>int</CODE>
128 */
129 public int intValue() {
130 return (int) value;
131 }
132
133 /**
134 * Returns the primitive <CODE>double</CODE> value of this object.
135 *
136 * @return The value as <CODE>double</CODE>
137 */
138 public double doubleValue() {
139 return value;
140 }
141
142 /**
143 * Returns the primitive <CODE>float</CODE> value of this object.
144 *
145 * @return The value as <CODE>float</CODE>
146 */
147 public float floatValue() {
148 return (float)value;
149 }
150
151 // other methods
152
153 /**
154 * Increments the value of the <CODE>PdfNumber</CODE>-object by 1.
155 */
156 public void increment() {
157 value += 1.0;
158 setContent(ByteBuffer.formatDouble(value));
159 }
160 }