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


1 /*
2  * $Id: PDFNumber.java,v 1.5.2.2 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 public class PDFNumber {
54
55     public static String JavaDoc doubleOut(Double JavaDoc doubleDown) {
56         return doubleOut(doubleDown.doubleValue());
57     }
58
59     public static String JavaDoc doubleOut(double doubleDown) {
60         StringBuffer JavaDoc p = new StringBuffer JavaDoc();
61         if (doubleDown < 0) {
62             doubleDown = -doubleDown;
63             p.append("-");
64         }
65         double trouble = doubleDown % 1;
66
67         if (trouble > 0.950) {
68             p.append((int)doubleDown + 1);
69         } else if (trouble < 0.050) {
70             p.append((int)doubleDown);
71         } else {
72             String JavaDoc doubleString = Double.toString(doubleDown);
73             int decimal = doubleString.indexOf(".");
74             if (decimal != -1) {
75                 p.append(doubleString.substring(0, decimal));
76
77                 if ((doubleString.length() - decimal) > 6) {
78                     p.append(doubleString.substring(decimal, decimal + 6));
79                 } else {
80                     p.append(doubleString.substring(decimal));
81                 }
82             } else {
83                 p.append(doubleString);
84             }
85         }
86         return (p.toString());
87     }
88
89     public static String JavaDoc doubleOut(double doubleDown, int dec) {
90
91         StringBuffer JavaDoc p = new StringBuffer JavaDoc();
92         if (doubleDown < 0) {
93             doubleDown = -doubleDown;
94             p.append("-");
95         }
96         double trouble = doubleDown % 1;
97
98         if (trouble > (1.0 - (5.0 / (Math.pow(10.0, dec))))) {
99             p.append((int)doubleDown + 1);
100         } else if (trouble < (5.0 / (Math.pow(10.0, dec)))) {
101             p.append((int)doubleDown);
102         } else {
103             String JavaDoc doubleString = Double.toString(doubleDown);
104             int decimal = doubleString.indexOf(".");
105             if (decimal != -1) {
106                 p.append(doubleString.substring(0, decimal));
107
108                 if ((doubleString.length() - decimal) > dec) {
109                     p.append(doubleString.substring(decimal, decimal + dec));
110                 } else {
111                     p.append(doubleString.substring(decimal));
112                 }
113             } else {
114                 p.append(doubleString);
115             }
116         }
117         return (p.toString());
118     }
119
120 }
121
122
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