www.pudn.com > jfreechart-0.9.12.zip > NumberTickUnit.java

/* ====================================== 
 * JFreeChart : a free Java chart library 
 * ====================================== 
 * 
 * Project Info:  http://www.jfree.org/jfreechart/index.html 
 * Project Lead:  David Gilbert (david.gilbert@object-refinery.com); 
 * 
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors. 
 * 
 * This library is free software; you can redistribute it and/or modify it under the terms 
 * of the GNU Lesser General Public License as published by the Free Software Foundation; 
 * either version 2.1 of the License, or (at your option) any later version. 
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
 * See the GNU Lesser General Public License for more details. 
 * 
 * You should have received a copy of the GNU Lesser General Public License along with this 
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 
 * Boston, MA 02111-1307, USA. 
 * 
 * ------------- 
 * TickUnit.java 
 * ------------- 
 * (C) Copyright 2001-2003, by Object Refinery Limited. 
 * 
 * Original Author:  David Gilbert (for Object Refinery Limited); 
 * Contributor(s):   -; 
 * 
 * $Id: NumberTickUnit.java,v 1.3 2003/06/13 15:45:56 mungady Exp $ 
 * 
 * Changes (from 19-Dec-2001) 
 * -------------------------- 
 * 19-Dec-2001 : Added standard header (DG); 
 * 01-May-2002 : Updated for changed to TickUnit class (DG); 
 * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG); 
 * 08-Nov-2002 : Moved to new package com.jrefinery.chart.axis (DG); 
 * 09-Jan-2002 : Added a new constructor (DG); 
 * 26-Mar-2003 : Implemented Serializable (DG); 
 * 
 */ 
 
package org.jfree.chart.axis; 
 
import java.io.Serializable; 
import java.text.NumberFormat; 
 
/** 
 * A numerical tick unit. 
 * 
 * @author David Gilbert 
 */ 
public class NumberTickUnit extends TickUnit implements Serializable { 
 
    /** A formatter for the tick unit. */ 
    private NumberFormat formatter; 
 
    /** 
     * Creates a new number tick unit. 
     * 
     * @param size  the size of the tick unit. 
     */ 
    public NumberTickUnit(double size) { 
        this(size, NumberFormat.getNumberInstance()); 
    } 
 
    /** 
     * Creates a new number tick unit. 
     * 
     * @param size  the size of the tick unit. 
     * @param formatter  a number formatter for the tick unit. 
     */ 
    public NumberTickUnit(double size, NumberFormat formatter) { 
        super(size); 
        this.formatter = formatter; 
    } 
 
    /** 
     * Converts a value to a string. 
     * 
     * @param value  the value. 
     * 
     * @return the formatted string. 
     */ 
    public String valueToString(double value) { 
        return formatter.format(value); 
    } 
 
}