plotrenderinginfo.java

jfreechart安装程序和使用说明

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ----------------------
 * PlotRenderingInfo.java
 * ----------------------
 * (C) Copyright 2003, 2004, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * $Id: PlotRenderingInfo.java,v 1.1 2004/08/31 14:39:21 mungady Exp $
 *
 * Changes
 * -------
 * 16-Sep-2003 : Version 1 (DG);
 * 23-Sep-2003 : Added Javadocs (DG);
 *
 */
 
package org.jfree.chart.plot;

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.ObjectUtils;

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

    /** The owner of this info. */
    private transient 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;
      
    /**
     * Default constructor.
     * 
     * @param owner  the owner.
     */
    public PlotRenderingInfo(ChartRenderingInfo owner) {
        this.owner = owner;        
        this.dataArea = new Rectangle2D.Double();
        this.subplotInfo = new java.util.ArrayList();    
    }
    
    /**
     * Returns the owner.
     * 
     * @return The owner.
     */
    public ChartRenderingInfo getOwner() {
        return this.owner;
    }
    
    /**
     * Returns the plot area (in Java2D space).
     * 
     * @return The plot area.
     */
    public Rectangle2D getPlotArea() {
        return this.plotArea;
    }
    
    /**
     * Sets the plot area.
     * 
     * @param area  the plot area (in Java2D space)
     */
    public void setPlotArea(Rectangle2D area) {
        this.plotArea = area;
    }
    
    /**
     * Returns the plot's data area (in Java2D space).
     * 
     * @return The data area.
     */
    public Rectangle2D getDataArea() {
        return this.dataArea;
    }
    
    /**
     * Sets the data area.
     * 
     * @param area  the data area (in Java2D space).
     */
    public void setDataArea(Rectangle2D area) {
        this.dataArea = area;
    }
    
    /**
     * Adds the info for a subplot.
     * 
     * @param info  the subplot info.
     */
    public void addSubplotInfo(PlotRenderingInfo info) {
        this.subplotInfo.add(info);    
    }
    
    /**
     * Returns the info for a subplot.
     * 
     * @param index  the subplot index.
     * 
     * @return The info.
     */
    public PlotRenderingInfo getSubplotInfo(int index) {
        return (PlotRenderingInfo) this.subplotInfo.get(index);
    }
    
    /**
     * Tests this instance for equality against an arbitrary object.
     * 
     * @param obj  the object (<code>null</code> permitted).
     * 
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;   
        }
        if (obj instanceof PlotRenderingInfo) {
            PlotRenderingInfo i = (PlotRenderingInfo) obj;
//            if (!ObjectUtils.equal(this.owner, i.owner)) {
//                return false;   
//            }
            if (!ObjectUtils.equal(this.dataArea, i.dataArea)) {
                return false;   
            }
            if (!ObjectUtils.equal(this.plotArea, i.plotArea)) {
                return false;   
            }
            if (!ObjectUtils.equal(this.subplotInfo, i.subplotInfo)) {
                return false;   
            }
            return true;
        }
        return false;   
    }
    
    /**
     * Returns a clone of this object.
     * 
     * @return A clone.
     * 
     * @throws CloneNotSupportedException if there is a problem cloning.
     */
    public Object clone() throws CloneNotSupportedException {
        return super.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);
    }



}