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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.]
*
* ---------------------------------
* IntervalXYItemLabelGenerator.java
* ---------------------------------
* (C) Copyright 2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 26-May-2008 : Version 1 (DG);
*
*/
package org.jfree.chart.labels;
import java.io.Serializable;
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.NumberFormat;
import java.util.Date;
import org.jfree.data.xy.IntervalXYDataset;
import org.jfree.data.xy.XYDataset;
import org.jfree.util.PublicCloneable;
/**
* An item label generator for datasets that implement the
* {@link IntervalXYDataset} interface.
*
* @since 1.0.10
*/
public class IntervalXYItemLabelGenerator extends AbstractXYItemLabelGenerator
implements XYItemLabelGenerator, Cloneable, PublicCloneable,
Serializable {
/** The default item label format. */
public static final String DEFAULT_ITEM_LABEL_FORMAT = "{5} - {6}";
/**
* Creates an item label generator using default number formatters.
*/
public IntervalXYItemLabelGenerator() {
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 (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 IntervalXYItemLabelGenerator(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 (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 IntervalXYItemLabelGenerator(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 (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).
*/
public IntervalXYItemLabelGenerator(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 (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 IntervalXYItemLabelGenerator(String formatString,
DateFormat xFormat, DateFormat yFormat) {
super(formatString, xFormat, yFormat);
}
/**
* Creates the array of items that can be passed to the
* {@link MessageFormat} class for creating labels.
*
* @param dataset the dataset (null not permitted).
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return An array of seven items from the dataset formatted as
* String objects (never null).
*/
@Override
protected Object[] createItemArray(XYDataset dataset, int series,
int item) {
IntervalXYDataset intervalDataset = null;
if (dataset instanceof IntervalXYDataset) {
intervalDataset = (IntervalXYDataset) dataset;
}
Object[] result = new Object[7];
result[0] = dataset.getSeriesKey(series).toString();
double x = dataset.getXValue(series, item);
double xs = x;
double xe = x;
double y = dataset.getYValue(series, item);
double ys = y;
double ye = y;
if (intervalDataset != null) {
xs = intervalDataset.getStartXValue(series, item);
xe = intervalDataset.getEndXValue(series, item);
ys = intervalDataset.getStartYValue(series, item);
ye = intervalDataset.getEndYValue(series, item);
}
DateFormat xdf = getXDateFormat();
if (xdf != null) {
result[1] = xdf.format(new Date((long) x));
result[2] = xdf.format(new Date((long) xs));
result[3] = xdf.format(new Date((long) xe));
}
else {
NumberFormat xnf = getXFormat();
result[1] = xnf.format(x);
result[2] = xnf.format(xs);
result[3] = xnf.format(xe);
}
NumberFormat ynf = getYFormat();
DateFormat ydf = getYDateFormat();
if (Double.isNaN(y) && dataset.getY(series, item) == null) {
result[4] = getNullYString();
}
else {
if (ydf != null) {
result[4] = ydf.format(new Date((long) y));
}
else {
result[4] = ynf.format(y);
}
}
if (Double.isNaN(ys) && intervalDataset != null
&& intervalDataset.getStartY(series, item) == null) {
result[5] = getNullYString();
}
else {
if (ydf != null) {
result[5] = ydf.format(new Date((long) ys));
}
else {
result[5] = ynf.format(ys);
}
}
if (Double.isNaN(ye) && intervalDataset != null
&& intervalDataset.getEndY(series, item) == null) {
result[6] = getNullYString();
}
else {
if (ydf != null) {
result[6] = ydf.format(new Date((long) ye));
}
else {
result[6] = ynf.format(ye);
}
}
return result;
}
/**
* Generates the item label 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 label text (possibly 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 (null permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof IntervalXYItemLabelGenerator)) {
return false;
}
return super.equals(obj);
}
}