Java tutorial
/* =========================================================== * 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.] * * ------------------- * IntervalMarker.java * ------------------- * (C) Copyright 2002-2008, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 20-Aug-2002 : Added stroke to constructor in Marker class (DG); * 02-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 26-Mar-2003 : Implemented Serializable (DG); * ------------- JFREECHART 1.0.x --------------------------------------------- * 05-Sep-2006 : Added MarkerChangeEvent notification (DG); * 18-Dec-2007 : Added new constructor (DG); * */ 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 org.jfree.chart.event.MarkerChangeEvent; import org.jfree.ui.GradientPaintTransformer; import org.jfree.ui.LengthAdjustmentType; import org.jfree.util.ObjectUtilities; /** * 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</code>. * * @param start the lower bound of the interval. * @param end the upper bound of the interval. * @param paint the fill paint (<code>null</code> not permitted). * * @since 1.0.9 */ 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</code> not permitted). * @param stroke the stroke (<code>null</code> 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. * * @since 1.0.3 */ 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. * * @since 1.0.3 */ 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</code>). */ 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</code> 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</code> permitted). * * @return A boolean. */ @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof IntervalMarker)) { return false; } if (!super.equals(obj)) { return false; } IntervalMarker that = (IntervalMarker) obj; if (this.startValue != that.startValue) { return false; } if (this.endValue != that.endValue) { return false; } if (!ObjectUtilities.equal(this.gradientPaintTransformer, that.gradientPaintTransformer)) { return false; } return true; } /** * 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(); } }