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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.]
*
* -------------------
* IntervalMarker.java
* -------------------
* (C) Copyright 2002-present, by David Gilbert.
*
* Original Author: David Gilbert;
* Contributor(s): Tracy Hiltbrand (equals/hashCode comply with EqualsVerifier);
*
*/
package org.jfree.chart.plot;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Paint;
import java.awt.Stroke;
import java.io.Serializable;
import java.util.Objects;
import org.jfree.chart.event.MarkerChangeEvent;
import org.jfree.chart.ui.GradientPaintTransformer;
import org.jfree.chart.ui.LengthAdjustmentType;
/**
* Represents an interval to be highlighted in some way.
*/
public class IntervalMarker extends Marker implements Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = -1762344775267627916L;
/** The start value. */
private double startValue;
/** The end value. */
private double endValue;
/** The gradient paint transformer (optional). */
private GradientPaintTransformer gradientPaintTransformer;
/**
* Constructs an interval marker.
*
* @param start the start of the interval.
* @param end the end of the interval.
*/
public IntervalMarker(double start, double end) {
this(start, end, Color.GRAY, new BasicStroke(0.5f), Color.GRAY,
new BasicStroke(0.5f), 0.8f);
}
/**
* Creates a new interval marker with the specified range and fill paint.
* The outline paint and stroke default to {@code null}.
*
* @param start the lower bound of the interval.
* @param end the upper bound of the interval.
* @param paint the fill paint ({@code null} not permitted).
*/
public IntervalMarker(double start, double end, Paint paint) {
this(start, end, paint, new BasicStroke(0.5f), null, null, 0.8f);
}
/**
* Constructs an interval marker.
*
* @param start the start of the interval.
* @param end the end of the interval.
* @param paint the paint ({@code null} not permitted).
* @param stroke the stroke ({@code null} not permitted).
* @param outlinePaint the outline paint.
* @param outlineStroke the outline stroke.
* @param alpha the alpha transparency.
*/
public IntervalMarker(double start, double end,
Paint paint, Stroke stroke,
Paint outlinePaint, Stroke outlineStroke,
float alpha) {
super(paint, stroke, outlinePaint, outlineStroke, alpha);
this.startValue = start;
this.endValue = end;
this.gradientPaintTransformer = null;
setLabelOffsetType(LengthAdjustmentType.CONTRACT);
}
/**
* Returns the start value for the interval.
*
* @return The start value.
*/
public double getStartValue() {
return this.startValue;
}
/**
* Sets the start value for the marker and sends a
* {@link MarkerChangeEvent} to all registered listeners.
*
* @param value the value.
*/
public void setStartValue(double value) {
this.startValue = value;
notifyListeners(new MarkerChangeEvent(this));
}
/**
* Returns the end value for the interval.
*
* @return The end value.
*/
public double getEndValue() {
return this.endValue;
}
/**
* Sets the end value for the marker and sends a
* {@link MarkerChangeEvent} to all registered listeners.
*
* @param value the value.
*/
public void setEndValue(double value) {
this.endValue = value;
notifyListeners(new MarkerChangeEvent(this));
}
/**
* Returns the gradient paint transformer.
*
* @return The gradient paint transformer (possibly {@code null}).
*/
public GradientPaintTransformer getGradientPaintTransformer() {
return this.gradientPaintTransformer;
}
/**
* Sets the gradient paint transformer and sends a
* {@link MarkerChangeEvent} to all registered listeners.
*
* @param transformer the transformer ({@code null} permitted).
*/
public void setGradientPaintTransformer(
GradientPaintTransformer transformer) {
this.gradientPaintTransformer = transformer;
notifyListeners(new MarkerChangeEvent(this));
}
/**
* Tests the marker for equality with an arbitrary object.
*
* @param obj the object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof IntervalMarker)) {
return false;
}
IntervalMarker that = (IntervalMarker) obj;
if (!that.canEqual(this)) {
return false;
}
if (Double.doubleToLongBits(this.startValue) !=
Double.doubleToLongBits(that.startValue)) {
return false;
}
if (Double.doubleToLongBits(this.endValue) !=
Double.doubleToLongBits(that.endValue)) {
return false;
}
if (!Objects.equals(this.gradientPaintTransformer,
that.gradientPaintTransformer)) {
return false;
}
return super.equals(obj);
}
/**
* Ensures symmetry between super/subclass implementations of equals. For
* more detail, see http://jqno.nl/equalsverifier/manual/inheritance.
*
* @param other Object
*
* @return true ONLY if the parameter is THIS class type
*/
@Override
public boolean canEqual(Object other) {
// Solves Problem: equals not symmetric
return (other instanceof IntervalMarker);
}
@Override
public int hashCode() {
int hash = super.hashCode(); // equals calls superclass, hashCode must also
hash = 47 * hash +
(int) (Double.doubleToLongBits(this.startValue) ^
(Double.doubleToLongBits(this.startValue) >>> 32));
hash = 47 * hash +
(int) (Double.doubleToLongBits(this.endValue) ^
(Double.doubleToLongBits(this.endValue) >>> 32));
hash = 47 * hash + Objects.hashCode(this.gradientPaintTransformer);
return hash;
}
/**
* Returns a clone of the marker.
*
* @return A clone.
*
* @throws CloneNotSupportedException Not thrown by this class, but the
* exception is declared for the use of subclasses.
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}