jfreechart.java

Web图形化的Java库

     */
    protected void notifyListeners(ChartChangeEvent event) {

        if (this.notify) {
            Object[] listeners = this.changeListeners.getListenerList();
            for (int i = listeners.length - 2; i >= 0; i -= 2) {
                if (listeners[i] == ChartChangeListener.class) {
                    ((ChartChangeListener) listeners[i + 1]).chartChanged(event);
                }
            }
        }

    }

    /**
     * Registers an object for notification of progress events relating to the chart.
     *
     * @param listener  the object being registered.
     */
    public void addProgressListener(ChartProgressListener listener) {
        this.progressListeners.add(ChartProgressListener.class, listener);
    }

    /**
     * Deregisters an object for notification of changes to the chart.
     *
     * @param listener  the object being deregistered.
     */
    public void removeProgressListener(ChartProgressListener listener) {
        this.progressListeners.remove(ChartProgressListener.class, listener);
    }

    /**
     * Sends a {@link ChartProgressEvent} to all registered listeners.
     *
     * @param event  information about the event that triggered the notification.
     */
    protected void notifyListeners(ChartProgressEvent event) {

        Object[] listeners = this.progressListeners.getListenerList();
        for (int i = listeners.length - 2; i >= 0; i -= 2) {
            if (listeners[i] == ChartProgressListener.class) {
                ((ChartProgressListener) listeners[i + 1]).chartProgress(event);
            }
        }

    }

    /**
     * Receives notification that a chart title has changed, and passes this
     * on to registered listeners.
     *
     * @param event  information about the chart title change.
     */
    public void titleChanged(TitleChangeEvent event) {
        event.setChart(this);
        notifyListeners(event);
    }

    /**
     * Receives notification that the chart legend has changed, and passes this
     * on to registered listeners.
     *
     * @param event  information about the chart legend change.
     */
    public void legendChanged(LegendChangeEvent event) {
        event.setChart(this);
        notifyListeners(event);
    }

    /**
     * Receives notification that the plot has changed, and passes this on to
     * registered listeners.
     *
     * @param event  information about the plot change.
     */
    public void plotChanged(PlotChangeEvent event) {
        event.setChart(this);
        notifyListeners(event);
    }

    /**
     * Tests this chart for equality with another object.
     *
     * @param obj  the object.
     *
     * @return <code>true</code> or <code>false</code>.
     */
    public boolean equals(Object obj) {

        if (obj == null) {
            return false;
        }

        if (obj == this) {
            return true;
        }

        if (obj instanceof JFreeChart) {

            JFreeChart c = (JFreeChart) obj;
            boolean b0 = ObjectUtils.equal(this.title, c.title);
            boolean b1 = ObjectUtils.equal(this.subtitles, c.subtitles);
            boolean b2 = ObjectUtils.equal(this.legend, c.legend);
            boolean b3 = ObjectUtils.equal(this.plot, c.plot);
            boolean b4 = (this.antialias == c.antialias);
            boolean b5 = ObjectUtils.equal(this.backgroundPaint, c.backgroundPaint);
            boolean b6 = ObjectUtils.equal(this.backgroundImage, c.backgroundImage);
            boolean b7 = (this.backgroundImageAlignment == c.backgroundImageAlignment);
            boolean b8 = (this.backgroundImageAlpha == c.backgroundImageAlpha);
            boolean b9 = (this.notify == c.notify);

            return b0 && b1 && b2 && b3 && b4 && b5 && b6 && b7 && b8 && b9;

        }

        return false;

    }

    /**
     * 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.writeStroke(this.borderStroke, stream);
        SerialUtilities.writePaint(this.borderPaint, stream);
        SerialUtilities.writePaint(this.backgroundPaint, 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.borderStroke = SerialUtilities.readStroke(stream);
        this.borderPaint = SerialUtilities.readPaint(stream);
        this.backgroundPaint = SerialUtilities.readPaint(stream);
        this.progressListeners = new EventListenerList();
        this.changeListeners = new EventListenerList();
        this.renderingHints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
                                                 RenderingHints.VALUE_ANTIALIAS_ON);
        
        // register as a listener with sub-components...
        if (this.title != null) {
            this.title.addChangeListener(this);
        }

        for (int i = 0; i < getSubtitleCount(); i++) {
            getSubtitle(i).addChangeListener(this);
        }

        if (this.legend != null) {
            this.legend.addChangeListener(this);
        }

        if (this.plot != null) {
            this.plot.addChangeListener(this);
        }

    }

    /**
     * Prints information about JFreeChart to standard output.
     *
     * @param args  no arguments are honored.
     */
    public static void main(String[] args) {

        System.out.println(JFreeChart.INFO.toString());

    }

    /**
     * Returns the flag that controls whether notification of chart change events is
     * suppressed.
     *
     * @return The flag.
     *
     * @deprecated Use isNotify() instead.
     */
    public boolean getSuppressChartChangeEvents() {
        return isNotify();
    }

    /**
     * Sets a flag that is used to suppress notification of chart change events.
     *
     * @param flag  the flag.
     *
     * @deprecated Use setNotify(boolean) instead.
     */
    public void setSuppressChartChangeEvents(boolean flag) {
        setNotify(!flag);
    }

}

/**
 * Information about the JCommon project.  One instance of this class is assigned to
 * <code>JFreeChart.INFO<code>.
 *
 * @author David Gilbert
 */
class JFreeChartInfo extends ProjectInfo {

    /** Default constructor. */
    public JFreeChartInfo() {

        // get a locale-specific resource bundle...
        String baseResourceClass = "org.jfree.chart.resources.JFreeChartResources";
        ResourceBundle resources = ResourceBundle.getBundle(baseResourceClass);

        setName(resources.getString("project.name"));
        setVersion(resources.getString("project.version"));
        setInfo(resources.getString("project.info"));
        setCopyright(resources.getString("project.copyright"));
        setLogo(null);  // load only when required
        setLicenceName("LGPL");
        setLicenceText(Licences.LGPL);

        setContributors(Arrays.asList(
            new Contributor[] {
                new Contributor("Richard Atkinson", "[e-mail]"),
                new Contributor("David Berry", "-"),
                new Contributor("Anthony Boulestreau", "-"),
                new Contributor("Jeremy Bowman", "-"),
                new Contributor("Nicolas Brodu", "-"),
                new Contributor("David Browning", "-"),
                new Contributor("S鴕en Caspersen", "-"),
                new Contributor("Chuanhao Chiu", "-"),
                new Contributor("Pascal Collet", "-"),
                new Contributor("Martin Cordova", "-"),
                new Contributor("Paolo Cova", "-"),
                new Contributor("Mike Duffy", "-"),
                new Contributor("Jonathan Gabbai", "-"),
                new Contributor("David Gilbert", "[e-mail]"),
                new Contributor("Serge V. Grachov", "-"),
                new Contributor("Joao Guilherme Del Valle", "-"),
                new Contributor("Hans-Jurgen Greiner", "-"),
                new Contributor("Aiman Han", "-"),
                new Contributor("Jon Iles", "-"),
                new Contributor("Wolfgang Irler", "-"),
                new Contributor("Xun Kang", "-"),
                new Contributor("Bill Kelemen", "-"),
                new Contributor("Norbert Kiesel", "-"),
                new Contributor("Gideon Krause", "-"),
                new Contributor("Arnaud Lelievre", "-"),
                new Contributor("David Li", "-"),
                new Contributor("Tin Luu", "-"),
                new Contributor("Craig MacFarlane", "-"),
                new Contributor("Achilleus Mantzios", "-"),
                new Contributor("Thomas Meier", "-"),
                new Contributor("Jim Moore", "-"),
                new Contributor("Jonathan Nash", "-"),
                new Contributor("Barak Naveh", "-"),
                new Contributor("David M. O'Donnell", "-"),
                new Contributor("Krzysztof Paz", "-"),
                new Contributor("Tomer Peretz", "-"),
                new Contributor("Andrzej Porebski", "-"),
                new Contributor("Xavier Poinsard", "-"),
                new Contributor("Viktor Rajewski", "-"),
                new Contributor("Eduardo Ramalho", "-"),
                new Contributor("Michael Rauch", "-"),
                new Contributor("Cameron Riley", "-"),
                new Contributor("Dan Rivett", "[e-mail]"),
                new Contributor("Thierry Saura", "-"),
                new Contributor("Andreas Schneider", "-"),
                new Contributor("Jean-Luc SCHWAB", "-"),
                new Contributor("Bryan Scott", "-"),
                new Contributor("Roger Studner", "-"),
                new Contributor("Irv Thomae", "-"),
                new Contributor("Eric Thomas", "-"),
                new Contributor("Rich Unger", "-"),
                new Contributor("Daniel van Enckevort", "-"),
                new Contributor("Laurence Vanhelsuwe", "-"),
                new Contributor("Sylvain Vieujot", "-"),
                new Contributor("Mark Watson", "www.markwatson.com"),
                new Contributor("Alex Weber", "-"),
                new Contributor("Matthew Wright", "-"),
                new Contributor("Benoit Xhenseval", "-"),
                new Contributor("Christian W. Zuckschwerdt",
                                "[e-mail]"),
                new Contributor("Hari", "-"),
                new Contributor("Sam (oldman)", "-"),
            }
        ));

        setLibraries(Arrays.asList(
            new Library[] {
                new Library(JCommon.INFO)
            }
        ));

    }

    /**
     * Returns the JFreeChart logo (a picture of a gorilla).
     *
     * @return  the JFreeChart logo.
     */
    public Image getLogo() {

        Image logo = super.getLogo();
        if (logo == null) {
            URL imageURL = ClassLoader.getSystemResource("org/jfree/chart/gorilla.jpg");
            if (imageURL != null) {
                ImageIcon temp = new ImageIcon(imageURL);  // use ImageIcon because it waits for
                                                           // the image to load...
                logo = temp.getImage();
                setLogo(logo);
            }
        }
        return logo;

    }

}