001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ------------------------------------ 028 * StandardContourToolTipGenerator.java 029 * ------------------------------------ 030 * (C) Copyright 2002-2005, by David M. O'Donnell and Contributors. 031 * 032 * Original Author: David M. O'Donnell; 033 * Contributor(s): David Gilbert (for Object Refinery Limited); 034 * 035 * $Id: StandardContourToolTipGenerator.java,v 1.4.2.1 2005/10/25 20:49:02 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 23-Jan-2003 : Added standard header (DG); 040 * 21-Mar-2003 : Implemented Serializable (DG); 041 * 15-Jul-2004 : Switched the getZ() and getZValue() methods (DG); 042 * 19-Jan-2005 : Now accesses primitives only from dataset (DG); 043 * 044 */ 045 046 package org.jfree.chart.labels; 047 048 import java.io.Serializable; 049 import java.text.DecimalFormat; 050 import java.text.SimpleDateFormat; 051 import java.util.Date; 052 053 import org.jfree.data.contour.ContourDataset; 054 055 /** 056 * A standard tooltip generator for plots that use data from an 057 * {@link ContourDataset}. 058 * 059 * @author David M. O'Donnell 060 */ 061 public class StandardContourToolTipGenerator implements ContourToolTipGenerator, 062 Serializable { 063 064 /** For serialization. */ 065 private static final long serialVersionUID = -1881659351247502711L; 066 067 /** The number formatter. */ 068 private DecimalFormat valueForm = new DecimalFormat("##.###"); 069 070 /** 071 * Generates a tooltip text item for a particular item within a series. 072 * 073 * @param data the dataset. 074 * @param item the item index (zero-based). 075 * 076 * @return The tooltip text. 077 */ 078 public String generateToolTip(ContourDataset data, int item) { 079 080 double x = data.getXValue(0, item); 081 double y = data.getYValue(0, item); 082 double z = data.getZValue(0, item); 083 String xString = null; 084 085 if (data.isDateAxis(0)) { 086 SimpleDateFormat formatter 087 = new java.text.SimpleDateFormat("MM/dd/yyyy hh:mm:ss"); 088 StringBuffer strbuf = new StringBuffer(); 089 strbuf = formatter.format( 090 new Date((long) x), strbuf, new java.text.FieldPosition(0) 091 ); 092 xString = strbuf.toString(); 093 } 094 else { 095 xString = this.valueForm.format(x); 096 } 097 if (!Double.isNaN(z)) { 098 return "X: " + xString 099 + ", Y: " + this.valueForm.format(y) 100 + ", Z: " + this.valueForm.format(z); 101 } 102 else { 103 return "X: " + xString 104 + ", Y: " + this.valueForm.format(y) 105 + ", Z: no data"; 106 } 107 108 } 109 110 /** 111 * Tests if this object is equal to another. 112 * 113 * @param obj the other object. 114 * 115 * @return A boolean. 116 */ 117 public boolean equals(Object obj) { 118 119 if (obj == this) { 120 return true; 121 } 122 123 if (!(obj instanceof StandardContourToolTipGenerator)) { 124 return false; 125 } 126 StandardContourToolTipGenerator that 127 = (StandardContourToolTipGenerator) obj; 128 if (this.valueForm != null) { 129 return this.valueForm.equals(that.valueForm); 130 } 131 return false; 132 133 } 134 135 }