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- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.pdf;
-
- /**
- * This class represents a simple number object. It also contains contains some
- * utility methods for outputing numbers to PDF.
- */
- public class PDFNumber extends PDFObject {
-
- private Number number;
-
- /**
- * Returns the number.
- * @return the number
- */
- public Number getNumber() {
- return this.number;
- }
-
- /**
- * Sets the number.
- * @param number the number
- */
- public void setNumber(Number number) {
- this.number = number;
- }
-
- /**
- * Output a Double value to a string suitable for PDF.
- *
- * @param doubleDown the Double value
- * @return the value as a string
- */
- public static String doubleOut(Double doubleDown) {
- return doubleOut(doubleDown.doubleValue());
- }
-
- /**
- * Output a double value to a string suitable for PDF.
- *
- * @param doubleDown the double value
- * @return the value as a string
- */
- public static String doubleOut(double doubleDown) {
- StringBuffer p = new StringBuffer();
- if (doubleDown < 0) {
- doubleDown = -doubleDown;
- p.append("-");
- }
- double trouble = doubleDown % 1;
-
- if (trouble > 0.950) {
- p.append((int)doubleDown + 1);
- } else if (trouble < 0.050) {
- p.append((int)doubleDown);
- } else {
- String doubleString = new String(doubleDown + "");
- int decimal = doubleString.indexOf(".");
- if (decimal != -1) {
- p.append(doubleString.substring(0, decimal));
-
- if ((doubleString.length() - decimal) > 6) {
- p.append(doubleString.substring(decimal, decimal + 6));
- } else {
- p.append(doubleString.substring(decimal));
- }
- } else {
- p.append(doubleString);
- }
- }
- return (p.toString());
- }
-
- /**
- * Output a double value to a string suitable for PDF.
- * In this method it is possible to set the maximum
- * number of decimal places to output.
- *
- * @param doubleDown the Double value
- * @param dec the number of decimal places to output
- * @return the value as a string
- */
- public static String doubleOut(double doubleDown, int dec) {
- StringBuffer p = new StringBuffer();
- if (doubleDown < 0) {
- doubleDown = -doubleDown;
- p.append("-");
- }
- double trouble = doubleDown % 1;
-
- if (trouble > (1.0 - (5.0 / (Math.pow(10.0, dec))))) {
- p.append((int)doubleDown + 1);
- } else if (trouble < (5.0 / (Math.pow(10.0, dec)))) {
- p.append((int)doubleDown);
- } else {
- String doubleString = new String(doubleDown + "");
- int decimal = doubleString.indexOf(".");
- if (decimal != -1) {
- p.append(doubleString.substring(0, decimal));
-
- if ((doubleString.length() - decimal) > dec) {
- p.append(doubleString.substring(decimal, decimal + dec));
- } else {
- p.append(doubleString.substring(decimal));
- }
- } else {
- p.append(doubleString);
- }
- }
- return (p.toString());
- }
-
- /**
- * @see org.apache.fop.pdf.PDFObject#toPDFString()
- */
- protected String toPDFString() {
- if (getNumber() == null) {
- throw new IllegalArgumentException(
- "The number of this PDFNumber must not be empty");
- }
- StringBuffer sb = new StringBuffer(64);
- sb.append(getObjectID());
- sb.append(getNumber().toString());
- sb.append("\nendobj\n");
- return sb.toString();
- }
-
- }
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