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<HTML><BODY BGCOLOR="white"><PRE><FONT color="green">001</FONT> /* ===========================================================<a name="line.1"></a><FONT color="green">002</FONT> * JFreeChart : a free chart library for the Java(tm) platform<a name="line.2"></a><FONT color="green">003</FONT> * ===========================================================<a name="line.3"></a><FONT color="green">004</FONT> *<a name="line.4"></a><FONT color="green">005</FONT> * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.<a name="line.5"></a><FONT color="green">006</FONT> *<a name="line.6"></a><FONT color="green">007</FONT> * Project Info: http://www.jfree.org/jfreechart/index.html<a name="line.7"></a><FONT color="green">008</FONT> *<a name="line.8"></a><FONT color="green">009</FONT> * This library is free software; you can redistribute it and/or modify it <a name="line.9"></a><FONT color="green">010</FONT> * under the terms of the GNU Lesser General Public License as published by <a name="line.10"></a><FONT color="green">011</FONT> * the Free Software Foundation; either version 2.1 of the License, or <a name="line.11"></a><FONT color="green">012</FONT> * (at your option) any later version.<a name="line.12"></a><FONT color="green">013</FONT> *<a name="line.13"></a><FONT color="green">014</FONT> * This library is distributed in the hope that it will be useful, but <a name="line.14"></a><FONT color="green">015</FONT> * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY <a name="line.15"></a><FONT color="green">016</FONT> * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public <a name="line.16"></a><FONT color="green">017</FONT> * License for more details.<a name="line.17"></a><FONT color="green">018</FONT> *<a name="line.18"></a><FONT color="green">019</FONT> * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a><FONT color="green">020</FONT> * License along with this library; if not, write to the Free Software<a name="line.20"></a><FONT color="green">021</FONT> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, <a name="line.21"></a><FONT color="green">022</FONT> * USA. <a name="line.22"></a><FONT color="green">023</FONT> *<a name="line.23"></a><FONT color="green">024</FONT> * [Java is a trademark or registered trademark of Sun Microsystems, Inc. <a name="line.24"></a><FONT color="green">025</FONT> * in the United States and other countries.]<a name="line.25"></a><FONT color="green">026</FONT> *<a name="line.26"></a><FONT color="green">027</FONT> * ---------------<a name="line.27"></a><FONT color="green">028</FONT> * NumberAxis.java<a name="line.28"></a><FONT color="green">029</FONT> * ---------------<a name="line.29"></a><FONT color="green">030</FONT> * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors.<a name="line.30"></a><FONT color="green">031</FONT> *<a name="line.31"></a><FONT color="green">032</FONT> * Original Author: David Gilbert (for Object Refinery Limited);<a name="line.32"></a><FONT color="green">033</FONT> * Contributor(s): Laurence Vanhelsuwe;<a name="line.33"></a><FONT color="green">034</FONT> *<a name="line.34"></a><FONT color="green">035</FONT> * $Id: NumberAxis.java,v 1.16.2.3 2006/02/20 21:46:52 mungady Exp $<a name="line.35"></a><FONT color="green">036</FONT> *<a name="line.36"></a><FONT color="green">037</FONT> * Changes (from 18-Sep-2001)<a name="line.37"></a><FONT color="green">038</FONT> * --------------------------<a name="line.38"></a><FONT color="green">039</FONT> * 18-Sep-2001 : Added standard header and fixed DOS encoding problem (DG);<a name="line.39"></a><FONT color="green">040</FONT> * 22-Sep-2001 : Changed setMinimumAxisValue() and setMaximumAxisValue() so <a name="line.40"></a><FONT color="green">041</FONT> * that they clear the autoRange flag (DG);<a name="line.41"></a><FONT color="green">042</FONT> * 27-Nov-2001 : Removed old, redundant code (DG);<a name="line.42"></a><FONT color="green">043</FONT> * 30-Nov-2001 : Added accessor methods for the standard tick units (DG);<a name="line.43"></a><FONT color="green">044</FONT> * 08-Jan-2002 : Added setAxisRange() method (since renamed setRange()) (DG);<a name="line.44"></a><FONT color="green">045</FONT> * 16-Jan-2002 : Added setTickUnit() method. Extended ValueAxis to support an <a name="line.45"></a><FONT color="green">046</FONT> * optional cross-hair (DG);<a name="line.46"></a><FONT color="green">047</FONT> * 08-Feb-2002 : Fixes bug to ensure the autorange is recalculated if the<a name="line.47"></a><FONT color="green">048</FONT> * setAutoRangeIncludesZero flag is changed (DG);<a name="line.48"></a><FONT color="green">049</FONT> * 25-Feb-2002 : Added a new flag autoRangeStickyZero to provide further <a name="line.49"></a><FONT color="green">050</FONT> * control over margins in the auto-range mechanism. Updated <a name="line.50"></a><FONT color="green">051</FONT> * constructors. Updated import statements. Moved the <a name="line.51"></a><FONT color="green">052</FONT> * createStandardTickUnits() method to the TickUnits class (DG);<a name="line.52"></a><FONT color="green">053</FONT> * 19-Apr-2002 : Updated Javadoc comments (DG);<a name="line.53"></a><FONT color="green">054</FONT> * 01-May-2002 : Updated for changes to TickUnit class, removed valueToString()<a name="line.54"></a><FONT color="green">055</FONT> * method (DG);<a name="line.55"></a><FONT color="green">056</FONT> * 25-Jul-2002 : Moved the lower and upper margin attributes, and the<a name="line.56"></a><FONT color="green">057</FONT> * auto-range minimum size, up one level to the ValueAxis <a name="line.57"></a><FONT color="green">058</FONT> * class (DG);<a name="line.58"></a><FONT color="green">059</FONT> * 05-Sep-2002 : Updated constructor to match changes in Axis class (DG);<a name="line.59"></a><FONT color="green">060</FONT> * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG);<a name="line.60"></a><FONT color="green">061</FONT> * 04-Oct-2002 : Moved standardTickUnits from NumberAxis --> ValueAxis (DG);<a name="line.61"></a><FONT color="green">062</FONT> * 24-Oct-2002 : Added a number format override (DG);<a name="line.62"></a><FONT color="green">063</FONT> * 08-Nov-2002 : Moved to new package com.jrefinery.chart.axis (DG);<a name="line.63"></a><FONT color="green">064</FONT> * 19-Nov-2002 : Removed grid settings (now controlled by the plot) (DG);<a name="line.64"></a><FONT color="green">065</FONT> * 14-Jan-2003 : Changed autoRangeMinimumSize from Number --> double, and moved<a name="line.65"></a><FONT color="green">066</FONT> * crosshair settings to the plot classes (DG);<a name="line.66"></a><FONT color="green">067</FONT> * 20-Jan-2003 : Removed the monolithic constructor (DG);<a name="line.67"></a><FONT color="green">068</FONT> * 26-Mar-2003 : Implemented Serializable (DG);<a name="line.68"></a><FONT color="green">069</FONT> * 16-Jul-2003 : Reworked to allow for multiple secondary axes (DG);<a name="line.69"></a><FONT color="green">070</FONT> * 13-Aug-2003 : Implemented Cloneable (DG);<a name="line.70"></a><FONT color="green">071</FONT> * 07-Oct-2003 : Fixed bug (815028) in the auto range calculation (DG);<a name="line.71"></a><FONT color="green">072</FONT> * 29-Oct-2003 : Added workaround for font alignment in PDF output (DG);<a name="line.72"></a><FONT color="green">073</FONT> * 07-Nov-2003 : Modified to use NumberTick class (DG);<a name="line.73"></a><FONT color="green">074</FONT> * 21-Jan-2004 : Renamed translateJava2DToValue --> java2DToValue, and <a name="line.74"></a><FONT color="green">075</FONT> * translateValueToJava2D --> valueToJava2D (DG); <a name="line.75"></a><FONT color="green">076</FONT> * 03-Mar-2004 : Added plotState to draw() method (DG);<a name="line.76"></a><FONT color="green">077</FONT> * 07-Apr-2004 : Changed string width calculation (DG);<a name="line.77"></a><FONT color="green">078</FONT> * 11-Jan-2005 : Removed deprecated methods in preparation for 1.0.0 <a name="line.78"></a><FONT color="green">079</FONT> * release (DG);<a name="line.79"></a><FONT color="green">080</FONT> * 28-Mar-2005 : Renamed autoRangeIncludesZero() --> getAutoRangeIncludesZero()<a name="line.80"></a><FONT color="green">081</FONT> * and autoRangeStickyZero() --> getAutoRangeStickyZero() (DG);<a name="line.81"></a><FONT color="green">082</FONT> * 21-Apr-2005 : Removed redundant argument from selectAutoTickUnit() (DG);<a name="line.82"></a><FONT color="green">083</FONT> * 22-Apr-2005 : Renamed refreshHorizontalTicks --> refreshTicksHorizontal<a name="line.83"></a><FONT color="green">084</FONT> * (and likewise the vertical version) for consistency with<a name="line.84"></a><FONT color="green">085</FONT> * other axis classes (DG);<a name="line.85"></a><FONT color="green">086</FONT> * ------------- JFREECHART 1.0.0 ---------------------------------------------<a name="line.86"></a><FONT color="green">087</FONT> * 10-Feb-2006 : Added some API doc comments in respect of bug 821046 (DG);<a name="line.87"></a><FONT color="green">088</FONT> * 20-Feb-2006 : Modified equals() method to check rangeType field (fixes bug<a name="line.88"></a><FONT color="green">089</FONT> * 1435461) (DG);<a name="line.89"></a><FONT color="green">090</FONT> *<a name="line.90"></a><FONT color="green">091</FONT> */<a name="line.91"></a><FONT color="green">092</FONT> <a name="line.92"></a><FONT color="green">093</FONT> package org.jfree.chart.axis;<a name="line.93"></a><FONT color="green">094</FONT> <a name="line.94"></a><FONT color="green">095</FONT> import java.awt.Font;<a name="line.95"></a><FONT color="green">096</FONT> import java.awt.FontMetrics;<a name="line.96"></a><FONT color="green">097</FONT> import java.awt.Graphics2D;<a name="line.97"></a><FONT color="green">098</FONT> import java.awt.font.FontRenderContext;<a name="line.98"></a><FONT color="green">099</FONT> import java.awt.font.LineMetrics;<a name="line.99"></a><FONT color="green">100</FONT> import java.awt.geom.Rectangle2D;<a name="line.100"></a><FONT color="green">101</FONT> import java.io.Serializable;<a name="line.101"></a><FONT color="green">102</FONT> import java.text.DecimalFormat;<a name="line.102"></a><FONT color="green">103</FONT> import java.text.NumberFormat;<a name="line.103"></a><FONT color="green">104</FONT> import java.util.List;<a name="line.104"></a><FONT color="green">105</FONT> import java.util.Locale;<a name="line.105"></a><FONT color="green">106</FONT> <a name="line.106"></a><FONT color="green">107</FONT> import org.jfree.chart.event.AxisChangeEvent;<a name="line.107"></a><FONT color="green">108</FONT> import org.jfree.chart.plot.Plot;<a name="line.108"></a><FONT color="green">109</FONT> import org.jfree.chart.plot.PlotRenderingInfo;<a name="line.109"></a><FONT color="green">110</FONT> import org.jfree.chart.plot.ValueAxisPlot;<a name="line.110"></a><FONT color="green">111</FONT> import org.jfree.data.Range;<a name="line.111"></a><FONT color="green">112</FONT> import org.jfree.data.RangeType;<a name="line.112"></a><FONT color="green">113</FONT> import org.jfree.ui.RectangleEdge;<a name="line.113"></a><FONT color="green">114</FONT> import org.jfree.ui.RectangleInsets;<a name="line.114"></a><FONT color="green">115</FONT> import org.jfree.ui.TextAnchor;<a name="line.115"></a><FONT color="green">116</FONT> import org.jfree.util.ObjectUtilities;<a name="line.116"></a><FONT color="green">117</FONT> <a name="line.117"></a><FONT color="green">118</FONT> /**<a name="line.118"></a><FONT color="green">119</FONT> * An axis for displaying numerical data.<a name="line.119"></a><FONT color="green">120</FONT> * <P><a name="line.120"></a><FONT color="green">121</FONT> * If the axis is set up to automatically determine its range to fit the data,<a name="line.121"></a><FONT color="green">122</FONT> * you can ensure that the range includes zero (statisticians usually prefer<a name="line.122"></a><FONT color="green">123</FONT> * this) by setting the <code>autoRangeIncludesZero</code> flag to <a name="line.123"></a><FONT color="green">124</FONT> * <code>true</code>.<a name="line.124"></a><FONT color="green">125</FONT> * <P><a name="line.125"></a><FONT color="green">126</FONT> * The <code>NumberAxis</code> class has a mechanism for automatically <a name="line.126"></a><FONT color="green">127</FONT> * selecting a tick unit that is appropriate for the current axis range. This<a name="line.127"></a><FONT color="green">128</FONT> * mechanism is an adaptation of code suggested by Laurence Vanhelsuwe.<a name="line.128"></a><FONT color="green">129</FONT> */<a name="line.129"></a><FONT color="green">130</FONT> public class NumberAxis extends ValueAxis implements Cloneable, Serializable {<a name="line.130"></a><FONT color="green">131</FONT> <a name="line.131"></a><FONT color="green">132</FONT> /** For serialization. */<a name="line.132"></a><FONT color="green">133</FONT> private static final long serialVersionUID = 2805933088476185789L;<a name="line.133"></a><FONT color="green">134</FONT> <a name="line.134"></a><FONT color="green">135</FONT> /** The default value for the autoRangeIncludesZero flag. */<a name="line.135"></a><FONT color="green">136</FONT> public static final boolean DEFAULT_AUTO_RANGE_INCLUDES_ZERO = true;<a name="line.136"></a><FONT color="green">137</FONT> <a name="line.137"></a>⌨️ 快捷键说明
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