001: /*
002: * $Id: PdfNumber.java 2739 2007-05-04 11:24:51Z blowagie $
003: * $Name$
004: *
005: * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
006: *
007: * The contents of this file are subject to the Mozilla Public License Version 1.1
008: * (the "License"); you may not use this file except in compliance with the License.
009: * You may obtain a copy of the License at http://www.mozilla.org/MPL/
010: *
011: * Software distributed under the License is distributed on an "AS IS" basis,
012: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013: * for the specific language governing rights and limitations under the License.
014: *
015: * The Original Code is 'iText, a free JAVA-PDF library'.
016: *
017: * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
018: * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
019: * All Rights Reserved.
020: * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
021: * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
022: *
023: * Contributor(s): all the names of the contributors are added in the source code
024: * where applicable.
025: *
026: * Alternatively, the contents of this file may be used under the terms of the
027: * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
028: * provisions of LGPL are applicable instead of those above. If you wish to
029: * allow use of your version of this file only under the terms of the LGPL
030: * License and not to allow others to use your version of this file under
031: * the MPL, indicate your decision by deleting the provisions above and
032: * replace them with the notice and other provisions required by the LGPL.
033: * If you do not delete the provisions above, a recipient may use your version
034: * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
035: *
036: * This library is free software; you can redistribute it and/or modify it
037: * under the terms of the MPL as stated above or under the terms of the GNU
038: * Library General Public License as published by the Free Software Foundation;
039: * either version 2 of the License, or any later version.
040: *
041: * This library is distributed in the hope that it will be useful, but WITHOUT
042: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
043: * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
044: * details.
045: *
046: * If you didn't download this code from the following link, you should check if
047: * you aren't using an obsolete version:
048: * http://www.lowagie.com/iText/
049: */
050:
051: package com.lowagie.text.pdf;
052:
053: /**
054: * <CODE>PdfNumber</CODE> provides two types of numbers, integer and real.
055: * <P>
056: * Integers may be specified by signed or unsigned constants. Reals may only be
057: * in decimal format.<BR>
058: * This object is described in the 'Portable Document Format Reference Manual version 1.7'
059: * section 3.3.2 (page 52-53).
060: *
061: * @see PdfObject
062: * @see BadPdfFormatException
063: */
064:
065: public class PdfNumber extends PdfObject {
066:
067: /** actual value of this <CODE>PdfNumber</CODE>, represented as a <CODE>double</CODE> */
068: private double value;
069:
070: // constructors
071:
072: /**
073: * Constructs a <CODE>PdfNumber</CODE>-object.
074: *
075: * @param content value of the new <CODE>PdfNumber</CODE>-object
076: */
077:
078: public PdfNumber(String content) {
079: super (NUMBER);
080: try {
081: value = Double.parseDouble(content.trim());
082: setContent(content);
083: } catch (NumberFormatException nfe) {
084: throw new RuntimeException(content
085: + " is not a valid number - " + nfe.toString());
086: }
087: }
088:
089: /**
090: * Constructs a new INTEGER <CODE>PdfNumber</CODE>-object.
091: *
092: * @param value value of the new <CODE>PdfNumber</CODE>-object
093: */
094:
095: public PdfNumber(int value) {
096: super (NUMBER);
097: this .value = value;
098: setContent(String.valueOf(value));
099: }
100:
101: /**
102: * Constructs a new REAL <CODE>PdfNumber</CODE>-object.
103: *
104: * @param value value of the new <CODE>PdfNumber</CODE>-object
105: */
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 REAL <CODE>PdfNumber</CODE>-object.
115: *
116: * @param value value of the new <CODE>PdfNumber</CODE>-object
117: */
118:
119: public PdfNumber(float value) {
120: this ((double) value);
121: }
122:
123: // methods returning the value of this object
124:
125: /**
126: * Returns the primitive <CODE>int</CODE> value of this object.
127: *
128: * @return a value
129: */
130:
131: public int intValue() {
132: return (int) value;
133: }
134:
135: /**
136: * Returns the primitive <CODE>double</CODE> value of this object.
137: *
138: * @return a value
139: */
140:
141: public double doubleValue() {
142: return value;
143: }
144:
145: public float floatValue() {
146: return (float) value;
147: }
148:
149: // other methods
150:
151: /**
152: * Increments the value of the <CODE>PdfNumber</CODE>-object with 1.
153: */
154:
155: public void increment() {
156: value += 1.0;
157: setContent(ByteBuffer.formatDouble(value));
158: }
159: }
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