chartpanel.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.]
 *
 * ---------------
 * ChartPanel.java
 * ---------------
 * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Andrzej Porebski;
 *                   S�ren Caspersen;
 *                   Jonathan Nash;
 *                   Hans-Jurgen Greiner;
 *                   Andreas Schneider;
 *                   Daniel van Enckevort;
 *                   David M O'Donnell;
 *                   Arnaud Lelievre;
 *                   Matthias Rose;
 *
 * $Id: ChartPanel.java,v 1.1 2004/08/31 14:26:08 mungady Exp $
 *
 * Changes (from 28-Jun-2001)
 * --------------------------
 * 28-Jun-2001 : Integrated buffering code contributed by S�ren Caspersen (DG);
 * 18-Sep-2001 : Updated header and fixed DOS encoding problem (DG);
 * 22-Nov-2001 : Added scaling to improve display of charts in small sizes (DG);
 * 26-Nov-2001 : Added property editing, saving and printing (DG);
 * 11-Dec-2001 : Transferred saveChartAsPNG method to new ChartUtilities class (DG);
 * 13-Dec-2001 : Added tooltips (DG);
 * 16-Jan-2002 : Added an optional crosshair, based on the implementation by Jonathan Nash.
 *               Renamed the tooltips class (DG);
 * 23-Jan-2002 : Implemented zooming based on code by Hans-Jurgen Greiner (DG);
 * 05-Feb-2002 : Improved tooltips setup.  Renamed method attemptSaveAs()-->doSaveAs() and made
 *               it public rather than private (DG);
 * 28-Mar-2002 : Added a new constructor (DG);
 * 09-Apr-2002 : Changed initialisation of tooltip generation, as suggested by Hans-Jurgen
 *               Greiner (DG);
 * 27-May-2002 : New interactive zooming methods based on code by Hans-Jurgen Greiner. Renamed
 *               JFreeChartPanel --> ChartPanel, moved constants to ChartPanelConstants
 *               interface (DG);
 * 31-May-2002 : Fixed a bug with interactive zooming and added a way to control if the
 *               zoom rectangle is filled in or drawn as an outline. A mouse drag
 *               gesture towards the top left now causes an autoRangeBoth() and is
 *               a way to undo zooms (AS);
 * 11-Jun-2002 : Reinstated handleClick method call in mouseClicked(...) to get crosshairs
 *               working again (DG);
 * 13-Jun-2002 : Added check for null popup menu in mouseDragged method (DG);
 * 18-Jun-2002 : Added get/set methods for minimum and maximum chart dimensions (DG);
 * 25-Jun-2002 : Removed redundant code (DG);
 * 27-Aug-2002 : Added get/set methods for popup menu (DG);
 * 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
 * 22-Oct-2002 : Added translation methods for screen <--> Java2D, contributed by Daniel
 *               van Enckevort (DG);
 * 05-Nov-2002 : Added a chart reference to the ChartMouseEvent class (DG);
 * 22-Nov-2002 : Added test in zoom method for inverted axes, supplied by David M O'Donnell (DG);
 * 14-Jan-2003 : Implemented ChartProgressListener interface (DG);
 * 14-Feb-2003 : Removed deprecated setGenerateTooltips method (DG);
 * 12-Mar-2003 : Added option to enforce filename extension (see bug id 643173) (DG);
 * 08-Sep-2003 : Added internationalization via use of properties resourceBundle (RFE 690236) (AL);
 * 18-Sep-2003 : Added getScaleX() and getScaleY() methods (protected) as requested by 
 *               Irv Thomae (DG);
 * 12-Nov-2003 : Added zooming support for the FastScatterPlot class (DG);
 * 24-Nov-2003 : Minor Javadoc updates (DG);
 * 04-Dec-2003 : Added anchor point for crosshair calculation (DG);
 * 17-Jan-2004 : Added new methods to set tooltip delays to be used in this chart panel. Refer
 *               to patch 877565 (MR);
 * 02-Feb-2004 : Fixed bug in zooming trigger and added zoomTriggerDistance attribute (DG);
 * 08-Apr-2004 : Changed getScaleX() and getScaleY() from protected to public (DG);
 * 15-Apr-2004 : Added zoomOutFactor and zoomInFactor (DG);
 * 21-Apr-2004 : Fixed zooming bug in mouseReleased() method (DG);
 * 13-Jul-2004 : Added check for null chart (DG);
 * 
 */

package org.jfree.chart;

import java.awt.AWTEvent;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Insets;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.File;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Iterator;
import java.util.List;
import java.util.ResourceBundle;

import javax.swing.JFileChooser;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.ToolTipManager;

import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.ChartEntity;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.event.ChartProgressEvent;
import org.jfree.chart.event.ChartProgressListener;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.FastScatterPlot;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.ValueAxisPlot;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.ui.ChartPropertyEditPanel;
import org.jfree.ui.ExtensionFileFilter;
import org.jfree.ui.RefineryUtilities;
import org.jfree.util.Log;
import org.jfree.util.LogContext;

/**
 * A Swing GUI component for displaying a {@link JFreeChart} object.
 * <P>
 * The panel registers with the chart to receive notification of changes to any component of the
 * chart.  The chart is redrawn automatically whenever this notification is received.
 */
public class ChartPanel extends JPanel 
                        implements ChartPanelConstants,
                                   ChartChangeListener,
                                   ChartProgressListener,
                                   ActionListener,
                                   MouseListener,
                                   MouseMotionListener,
                                   Printable,
                                   Serializable {

    /** The chart that is displayed in the panel. */
    private JFreeChart chart;

    /** Storage for registered (chart) mouse listeners. */
    private List chartMouseListeners;

    /** A flag that controls whether or not the off-screen buffer is used. */
    private boolean useBuffer;

    /** A flag that indicates that the buffer should be refreshed. */
    private boolean refreshBuffer;

    /** A buffer for the rendered chart. */
    private Image chartBuffer;

    /** The height of the chart buffer. */
    private int chartBufferHeight;

    /** The width of the chart buffer. */
    private int chartBufferWidth;

    /** The minimum width for drawing a chart (uses scaling for smaller widths). */
    private int minimumDrawWidth;

    /** The minimum height for drawing a chart (uses scaling for smaller heights). */
    private int minimumDrawHeight;

    /** The maximum width for drawing a chart (uses scaling for bigger widths). */
    private int maximumDrawWidth;

    /** The maximum height for drawing a chart (uses scaling for bigger heights). */
    private int maximumDrawHeight;

    /** The popup menu for the frame. */
    private JPopupMenu popup;

    /** The drawing info collected the last time the chart was drawn. */
    private ChartRenderingInfo info;
    
    /** The chart anchor point. */
    private Point2D anchor;

    /** The scale factor used to draw the chart. */
    private double scaleX;

    /** The scale factor used to draw the chart. */
    private double scaleY;

    /** The zoom rectangle (selected by the user with the mouse). */
    private transient Rectangle2D zoomRectangle = null;

    /** The zoom rectangle starting point (selected by the user with a mouse click). */
    private Point2D zoomPoint = null;

    /** Controls if the zoom rectangle is drawn as an outline or filled. */
    private boolean fillZoomRectangle = false;

    /** A flag that controls whether or not horizontal zooming is enabled. */
    private boolean horizontalZoom = false;

    /** A flag that controls whether or not vertical zooming is enabled. */
    private boolean verticalZoom = false;

    /** The minimum distance required to drag the mouse to trigger a zoom. */
    private int zoomTriggerDistance;
    
    /** A flag that controls whether or not horizontal tracing is enabled. */
    private boolean horizontalAxisTrace = false;

    /** A flag that controls whether or not vertical tracing is enabled. */
    private boolean verticalAxisTrace = false;

    /** Menu item for zooming in on a chart (both axes). */
    private JMenuItem zoomInBothMenuItem;

    /** Menu item for zooming in on a chart (horizontal axis). */
    private JMenuItem zoomInHorizontalMenuItem;

    /** Menu item for zooming in on a chart (vertical axis). */
    private JMenuItem zoomInVerticalMenuItem;

    /** Menu item for zooming out on a chart. */
    private JMenuItem zoomOutBothMenuItem;

    /** Menu item for zooming out on a chart (horizontal axis). */
    private JMenuItem zoomOutHorizontalMenuItem;

    /** Menu item for zooming out on a chart (vertical axis). */
    private JMenuItem zoomOutVerticalMenuItem;

    /** Menu item for resetting the zoom (both axes). */
    private JMenuItem autoRangeBothMenuItem;

    /** Menu item for resetting the zoom (horizontal axis only). */
    private JMenuItem autoRangeHorizontalMenuItem;

    /** Menu item for resetting the zoom (vertical axis only). */
    private JMenuItem autoRangeVerticalMenuItem;

    /** A vertical trace line. */
    private transient Line2D verticalTraceLine;

    /** A horizontal trace line. */
    private transient Line2D horizontalTraceLine;

    /** A flag that controls whether or not file extensions are enforced. */
    private boolean enforceFileExtensions;

    /** A flag that indicates if original tooltip delays are changed. */
    private boolean ownToolTipDelaysActive;  
    
    /** Original initial tooltip delay of ToolTipManager.sharedInstance(). */
    private int originalToolTipInitialDelay;

    /** Original reshow tooltip delay of ToolTipManager.sharedInstance(). */
    private int originalToolTipReshowDelay;  

    /** Original dismiss tooltip delay of ToolTipManager.sharedInstance(). */
    private int originalToolTipDismissDelay;

    /** Own initial tooltip delay to be used in this chart panel. */
    private int ownToolTipInitialDelay;
    
    /** Own reshow tooltip delay to be used in this chart panel. */
    private int ownToolTipReshowDelay;  

    /** Own dismiss tooltip delay to be used in this chart panel. */
    private int ownToolTipDismissDelay;    

    /** The factor used to zoom in on an axis range. */
    private double zoomInFactor = 0.5;
    
    /** The factor used to zoom out on an axis range. */
    private double zoomOutFactor = 2.0;
    
    /** The resourceBundle for the localization. */
    protected static ResourceBundle 
        localizationResources = ResourceBundle.getBundle("org.jfree.chart.LocalizationBundle");

    /** Access to logging facilities. */
    private static final LogContext LOGGER = Log.createContext(ChartPanel.class);

    /**
     * Constructs a panel that displays the specified chart.
     *
     * @param chart  the chart.
     */
    public ChartPanel(JFreeChart chart) {

        this(
            chart,
            DEFAULT_WIDTH,
            DEFAULT_HEIGHT,
            DEFAULT_MINIMUM_DRAW_WIDTH,
            DEFAULT_MINIMUM_DRAW_HEIGHT,
            DEFAULT_MAXIMUM_DRAW_WIDTH,
            DEFAULT_MAXIMUM_DRAW_HEIGHT,
            DEFAULT_BUFFER_USED,
            true,  // properties
            true,  // save
            true,  // print
            true,  // zoom
            true   // tooltips
        );

    }

    /**
     * Constructs a panel containing a chart.
     *
     * @param chart  the chart.
     * @param useBuffer  a flag controlling whether or not an off-screen buffer is used.
     */
    public ChartPanel(JFreeChart chart, boolean useBuffer) {

        this(chart,
             DEFAULT_WIDTH,
             DEFAULT_HEIGHT,
             DEFAULT_MINIMUM_DRAW_WIDTH,
             DEFAULT_MINIMUM_DRAW_HEIGHT,
             DEFAULT_MAXIMUM_DRAW_WIDTH,
             DEFAULT_MAXIMUM_DRAW_HEIGHT,
             useBuffer,
             true,  // properties
             true,  // save
             true,  // print
             true,  // zoom
             true   // tooltips
             );

    }

    /**
     * Constructs a JFreeChart panel.
     *
     * @param chart  the chart.
     * @param properties  a flag indicating whether or not the chart property
     *                    editor should be available via the popup menu.
     * @param save  a flag indicating whether or not save options should be
     *              available via the popup menu.
     * @param print  a flag indicating whether or not the print option
     *               should be available via the popup menu.
     * @param zoom  a flag indicating whether or not zoom options should
     *              be added to the popup menu.
     * @param tooltips  a flag indicating whether or not tooltips should be
     *                  enabled for the chart.
     */