org.jfree.chart.labels.StandardXYItemLabelGenerator Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jfreechart Show documentation
Show all versions of jfreechart Show documentation
JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D API, it supports a wide range of chart types including
bar charts, pie charts, line charts, XY-plots, time series plots, Sankey charts
and more.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, by David Gilbert 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.]
*
* ---------------------------------
* StandardXYItemLabelGenerator.java
* ---------------------------------
* (C) Copyright 2001-present, by David Gilbert.
*
* Original Author: David Gilbert;
* Contributor(s): -;
*
*/
package org.jfree.chart.labels;
import java.io.Serializable;
import java.text.DateFormat;
import java.text.NumberFormat;
import org.jfree.chart.util.PublicCloneable;
import org.jfree.data.xy.XYDataset;
/**
* A standard item label generator for plots that use data from an
* {@link org.jfree.data.xy.XYDataset}.
*/
public class StandardXYItemLabelGenerator extends AbstractXYItemLabelGenerator
implements XYItemLabelGenerator, Cloneable, PublicCloneable,
Serializable {
/** For serialization. */
private static final long serialVersionUID = 7807668053171837925L;
/** The default item label format. */
public static final String DEFAULT_ITEM_LABEL_FORMAT = "{2}";
/**
* Creates an item label generator using default number formatters.
*/
public StandardXYItemLabelGenerator() {
this(DEFAULT_ITEM_LABEL_FORMAT, NumberFormat.getNumberInstance(),
NumberFormat.getNumberInstance());
}
/**
* Creates an item label generator using the specified number formatters.
*
* @param formatString the item label format string ({@code null} not
* permitted).
*/
public StandardXYItemLabelGenerator(String formatString) {
this(formatString, NumberFormat.getNumberInstance(),
NumberFormat.getNumberInstance());
}
/**
* Creates an item label generator using the specified number formatters.
*
* @param formatString the item label format string ({@code null} not
* permitted).
* @param xFormat the format object for the x values ({@code null}
* not permitted).
* @param yFormat the format object for the y values ({@code null}
* not permitted).
*/
public StandardXYItemLabelGenerator(String formatString,
NumberFormat xFormat, NumberFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates an item label generator using the specified formatters.
*
* @param formatString the item label format string ({@code null}
* not permitted).
* @param xFormat the format object for the x values ({@code null}
* not permitted).
* @param yFormat the format object for the y values ({@code null}
* not permitted).
*/
public StandardXYItemLabelGenerator(String formatString,
DateFormat xFormat, NumberFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates an item label 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 ({@code null}
* not permitted).
* @param xFormat the format object for the x values ({@code null}
* permitted).
* @param yFormat the format object for the y values ({@code null}
* not permitted).
*/
public StandardXYItemLabelGenerator(String formatString,
NumberFormat xFormat, DateFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates a label generator using the specified date formatters.
*
* @param formatString the label format string ({@code null} not
* permitted).
* @param xFormat the format object for the x values ({@code null}
* not permitted).
* @param yFormat the format object for the y values ({@code null}
* not permitted).
*/
public StandardXYItemLabelGenerator(String formatString,
DateFormat xFormat, DateFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Generates the item label text for an item in a dataset.
*
* @param dataset the dataset ({@code null} not permitted).
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*
* @return The label text (possibly {@code null}).
*/
@Override
public String generateLabel(XYDataset dataset, int series, int item) {
return generateLabelString(dataset, series, item);
}
/**
* 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();
}
/**
* Tests this object for equality with an arbitrary object.
*
* @param obj the other object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof StandardXYItemLabelGenerator)) {
return false;
}
return super.equals(obj);
}
}