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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------------------------
* StandardXYToolTipGenerator.java
* -------------------------------
* (C) Copyright 2004-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 12-May-2004 : Version 1 (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 25-Jan-2007 : Added new constructor - see bug 1624067 (DG);
*
*/
package org.jfree.chart.labels;
import java.io.Serializable;
import java.text.DateFormat;
import java.text.NumberFormat;
import org.jfree.data.xy.XYDataset;
import org.jfree.util.PublicCloneable;
/**
* A standard tool tip generator for use with an
* {@link org.jfree.chart.renderer.xy.XYItemRenderer}.
*/
public class StandardXYToolTipGenerator extends AbstractXYItemLabelGenerator
implements XYToolTipGenerator, Cloneable, PublicCloneable,
Serializable {
/** For serialization. */
private static final long serialVersionUID = -3564164459039540784L;
/** The default tooltip format. */
public static final String DEFAULT_TOOL_TIP_FORMAT = "{0}: ({1}, {2})";
/**
* Returns a tool tip generator that formats the x-values as dates and the
* y-values as numbers.
*
* @return A tool tip generator (never null).
*/
public static StandardXYToolTipGenerator getTimeSeriesInstance() {
return new StandardXYToolTipGenerator(DEFAULT_TOOL_TIP_FORMAT,
DateFormat.getInstance(), NumberFormat.getInstance());
}
/**
* Creates a tool tip generator using default number formatters.
*/
public StandardXYToolTipGenerator() {
this(DEFAULT_TOOL_TIP_FORMAT, NumberFormat.getNumberInstance(),
NumberFormat.getNumberInstance());
}
/**
* Creates a tool tip generator using the specified number formatters.
*
* @param formatString the item label format string (null not
* permitted).
* @param xFormat the format object for the x values (null
* not permitted).
* @param yFormat the format object for the y values (null
* not permitted).
*/
public StandardXYToolTipGenerator(String formatString,
NumberFormat xFormat, NumberFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates a tool tip generator using the specified number formatters.
*
* @param formatString the label format string (null not
* permitted).
* @param xFormat the format object for the x values (null
* not permitted).
* @param yFormat the format object for the y values (null
* not permitted).
*/
public StandardXYToolTipGenerator(String formatString, DateFormat xFormat,
NumberFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates a tool tip generator using the specified formatters (a
* number formatter for the x-values and a date formatter for the
* y-values).
*
* @param formatString the item label format string (null
* not permitted).
* @param xFormat the format object for the x values (null
* permitted).
* @param yFormat the format object for the y values (null
* not permitted).
*
* @since 1.0.4
*/
public StandardXYToolTipGenerator(String formatString,
NumberFormat xFormat, DateFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates a tool tip generator using the specified date formatters.
*
* @param formatString the label format string (null not
* permitted).
* @param xFormat the format object for the x values (null
* not permitted).
* @param yFormat the format object for the y values (null
* not permitted).
*/
public StandardXYToolTipGenerator(String formatString,
DateFormat xFormat, DateFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Generates the tool tip text for an item in a dataset.
*
* @param dataset the dataset (null not permitted).
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*
* @return The tooltip text (possibly null).
*/
@Override
public String generateToolTip(XYDataset dataset, int series, int item) {
return generateLabelString(dataset, series, item);
}
/**
* Tests this object for equality with an arbitrary object.
*
* @param obj the other object (null permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof StandardXYToolTipGenerator)) {
return false;
}
return super.equals(obj);
}
/**
* Returns an independent copy of the generator.
*
* @return A clone.
*
* @throws CloneNotSupportedException if cloning is not supported.
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}