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jfreechart example source code file (PlotRenderingInfo.java)

This example jfreechart source code file (PlotRenderingInfo.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, chartrenderinginfo, chartrenderinginfo, classnotfoundexception, clonenotsupportedexception, geometry, illegalargumentexception, io, ioexception, ioexception, list, object, plotrenderinginfo, plotrenderinginfo, rectangle2d, rectangle2d, serializable, util

The jfreechart PlotRenderingInfo.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ----------------------
 * PlotRenderingInfo.java
 * ----------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 16-Sep-2003 : Version 1 (DG);
 * 23-Sep-2003 : Added Javadocs (DG);
 * 12-Nov-2004 : Added getSubplotCount() and findSubplot() methods (DG);
 * 01-Nov-2005 : Made 'owner' non-transient to fix bug 1344048 (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 01-Dec-2006 : Implemented clone() method properly (DG);
 * 17-Apr-2007 : Fixed bug 1698965 (NPE in CombinedDomainXYPlot) (DG);
 *
 */

package org.jfree.chart.plot;

import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.List;

import org.jfree.chart.ChartRenderingInfo;
import org.jfree.io.SerialUtilities;
import org.jfree.util.ObjectUtilities;

/**
 * Stores information about the dimensions of a plot and its subplots.
 */
public class PlotRenderingInfo implements Cloneable, Serializable {

    /** For serialization. */
    private static final long serialVersionUID = 8446720134379617220L;

    /** The owner of this info. */
    private ChartRenderingInfo owner;

    /** The plot area. */
    private transient Rectangle2D plotArea;

    /** The data area. */
    private transient Rectangle2D dataArea;

    /**
     * Storage for the plot rendering info objects belonging to the subplots.
     */
    private List subplotInfo;

    /**
     * Creates a new instance.
     *
     * @param owner  the owner (<code>null permitted).
     */
    public PlotRenderingInfo(ChartRenderingInfo owner) {
        this.owner = owner;
        this.dataArea = new Rectangle2D.Double();
        this.subplotInfo = new java.util.ArrayList();
    }

    /**
     * Returns the owner (as specified in the constructor).
     *
     * @return The owner (possibly <code>null).
     */
    public ChartRenderingInfo getOwner() {
        return this.owner;
    }

    /**
     * Returns the plot area (in Java2D space).
     *
     * @return The plot area (possibly <code>null).
     *
     * @see #setPlotArea(Rectangle2D)
     */
    public Rectangle2D getPlotArea() {
        return this.plotArea;
    }

    /**
     * Sets the plot area.
     *
     * @param area  the plot area (in Java2D space, <code>null
     *     permitted but discouraged)
     *
     * @see #getPlotArea()
     */
    public void setPlotArea(Rectangle2D area) {
        this.plotArea = area;
    }

    /**
     * Returns the plot's data area (in Java2D space).
     *
     * @return The data area (possibly <code>null).
     *
     * @see #setDataArea(Rectangle2D)
     */
    public Rectangle2D getDataArea() {
        return this.dataArea;
    }

    /**
     * Sets the data area.
     *
     * @param area  the data area (in Java2D space, <code>null permitted
     *     but discouraged).
     *
     * @see #getDataArea()
     */
    public void setDataArea(Rectangle2D area) {
        this.dataArea = area;
    }

    /**
     * Returns the number of subplots (possibly zero).
     *
     * @return The subplot count.
     */
    public int getSubplotCount() {
        return this.subplotInfo.size();
    }

    /**
     * Adds the info for a subplot.
     *
     * @param info  the subplot info.
     *
     * @see #getSubplotInfo(int)
     */
    public void addSubplotInfo(PlotRenderingInfo info) {
        this.subplotInfo.add(info);
    }

    /**
     * Returns the info for a subplot.
     *
     * @param index  the subplot index.
     *
     * @return The info.
     *
     * @see #addSubplotInfo(PlotRenderingInfo)
     */
    public PlotRenderingInfo getSubplotInfo(int index) {
        return (PlotRenderingInfo) this.subplotInfo.get(index);
    }

    /**
     * Returns the index of the subplot that contains the specified
     * (x, y) point (the "source" point).  The source point will usually
     * come from a mouse click on a {@link org.jfree.chart.ChartPanel},
     * and this method is then used to determine the subplot that
     * contains the source point.
     *
     * @param source  the source point (in Java2D space, <code>null not
     * permitted).
     *
     * @return The subplot index (or -1 if no subplot contains
     *         <code>source).
     */
    public int getSubplotIndex(Point2D source) {
        if (source == null) {
            throw new IllegalArgumentException("Null 'source' argument.");
        }
        int subplotCount = getSubplotCount();
        for (int i = 0; i < subplotCount; i++) {
            PlotRenderingInfo info = getSubplotInfo(i);
            Rectangle2D area = info.getDataArea();
            if (area.contains(source)) {
                return i;
            }
        }
        return -1;
    }

    /**
     * Tests this instance for equality against an arbitrary object.
     *
     * @param obj  the object (<code>null permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof PlotRenderingInfo)) {
            return false;
        }
        PlotRenderingInfo that = (PlotRenderingInfo) obj;
        if (!ObjectUtilities.equal(this.dataArea, that.dataArea)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.plotArea, that.plotArea)) {
            return false;
        }
        if (!ObjectUtilities.equal(this.subplotInfo, that.subplotInfo)) {
            return false;
        }
        return true;
    }

    /**
     * Returns a clone of this object.
     *
     * @return A clone.
     *
     * @throws CloneNotSupportedException if there is a problem cloning.
     */
    public Object clone() throws CloneNotSupportedException {
        PlotRenderingInfo clone = (PlotRenderingInfo) super.clone();
        if (this.plotArea != null) {
            clone.plotArea = (Rectangle2D) this.plotArea.clone();
        }
        if (this.dataArea != null) {
            clone.dataArea = (Rectangle2D) this.dataArea.clone();
        }
        clone.subplotInfo = new java.util.ArrayList(this.subplotInfo.size());
        for (int i = 0; i < this.subplotInfo.size(); i++) {
            PlotRenderingInfo info
                    = (PlotRenderingInfo) this.subplotInfo.get(i);
            clone.subplotInfo.add(info.clone());
        }
        return clone;
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the output stream.
     *
     * @throws IOException  if there is an I/O error.
     */
    private void writeObject(ObjectOutputStream stream) throws IOException {
        stream.defaultWriteObject();
        SerialUtilities.writeShape(this.dataArea, stream);
        SerialUtilities.writeShape(this.plotArea, stream);
    }

    /**
     * Provides serialization support.
     *
     * @param stream  the input stream.
     *
     * @throws IOException  if there is an I/O error.
     * @throws ClassNotFoundException  if there is a classpath problem.
     */
    private void readObject(ObjectInputStream stream)
            throws IOException, ClassNotFoundException {
        stream.defaultReadObject();
        this.dataArea = (Rectangle2D) SerialUtilities.readShape(stream);
        this.plotArea = (Rectangle2D) SerialUtilities.readShape(stream);
    }

}

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