jfreechartdemobase.java

Web图形化的Java库

/* ======================================
 * JFreeChart : a free Java chart library
 * ======================================
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 * Project Lead:  David Gilbert ([e-mail]);
 *
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * 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.
 *
 * -----------------------
 * JFreeChartDemoBase.java
 * -----------------------
 * (C) Copyright 2000-2003, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Andrzej Porebski;
 *                   Matthew Wright;
 *                   Serge V. Grachov;
 *                   Bill Kelemen;
 *                   Achilleus Mantzios;
 *                   Bryan Scott;
 *
 * $Id: JFreeChartDemoBase.java,v 1.22 2003/08/28 16:25:34 mungady Exp $
 *
 * Changes
 * -------
 * 27-Jul-2002 : Created (BRS);
 * 10-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 *
 */

package org.jfree.chart.demo;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.lang.reflect.Method;
import java.util.ResourceBundle;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.Legend;
import org.jfree.chart.Spacer;
import org.jfree.chart.TextTitle;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.LogarithmicAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.labels.HighLowToolTipGenerator;
import org.jfree.chart.labels.TimeSeriesToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.CombinedRangeXYPlot;
import org.jfree.chart.plot.CompassPlot;
import org.jfree.chart.plot.DialShape;
import org.jfree.chart.plot.MeterPlot;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.ThermometerPlot;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.HighLowRenderer;
import org.jfree.chart.renderer.StandardXYItemRenderer;
import org.jfree.chart.renderer.XYBarRenderer;
import org.jfree.chart.renderer.XYItemRenderer;
import org.jfree.data.CategoryDataset;
import org.jfree.data.CombinedDataset;
import org.jfree.data.DatasetUtilities;
import org.jfree.data.DefaultValueDataset;
import org.jfree.data.HighLowDataset;
import org.jfree.data.IntervalCategoryDataset;
import org.jfree.data.MovingAverage;
import org.jfree.data.PieDataset;
import org.jfree.data.SignalsDataset;
import org.jfree.data.SubSeriesDataset;
import org.jfree.data.WindDataset;
import org.jfree.data.XYDataset;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;

/**
 * A simple class that allows the swing and servlet chart demonstrations
 * to share chart generating code.
 *
 * If you would like to add a chart to the swing and/or servlet demo do so here.
 *
 * @author Bryan Scott
 * @author David Gilbert
 */
public class JFreeChartDemoBase {

    /**
     * CHART_COMMANDS holds information on charts that can be created
     * Format is
     *   Name, Creation Method, Resource file prefix
     *
     * Steps To add a chart
     * 1) Create a createChart method which returns a JFreeChart
     * 2) Append details to CHART_COMMANDS
     * 3) Append details to DemoResources
     */
    public static final String[][] CHART_COMMANDS = {
        {"HORIZONTAL_BAR_CHART", "createHorizontalBarChart", "chart1"},
        {"HORIZONTAL_STACKED_BAR_CHART", "createStackedHorizontalBarChart", "chart2"},
        {"VERTICAL_BAR_CHART", "createVerticalBarChart", "chart3"},
        {"VERTICAL_3D_BAR_CHART", "createVertical3DBarChart", "chart4"},
        {"VERTICAL_STACKED_BAR_CHART", "createVerticalStackedBarChart", "chart5"},
        {"VERTICAL_STACKED_3D_BAR_CHART", "createVerticalStacked3DBarChart", "chart6"},
        {"PIE_CHART_1", "createPieChartOne", "chart7"},
        {"PIE_CHART_2", "createPieChartTwo", "chart8"},
        {"XY_PLOT", "createXYPlot", "chart9"},
        {"TIME_SERIES_1_CHART", "createTimeSeries1Chart", "chart10"},
        {"TIME_SERIES_2_CHART", "createTimeSeries2Chart", "chart11"},
        {"TIME_SERIES_WITH_MA_CHART", "createTimeSeriesWithMAChart", "chart12"},
        {"HIGH_LOW_CHART", "createHighLowChart", "chart13"},
        {"CANDLESTICK_CHART", "createCandlestickChart", "chart14"},
        {"SIGNAL_CHART", "createSignalChart", "chart15"},
        {"WIND_PLOT", "createWindPlot", "chart16"},
        {"SCATTER_PLOT", "createScatterPlot", "chart17"},
        {"LINE_CHART", "createLineChart", "chart18"},
        {"VERTICAL_XY_BAR_CHART", "createVerticalXYBarChart", "chart19"},
        {"XY_PLOT_NULL", "createNullXYPlot", "chart20"},
        {"XY_PLOT_ZERO", "createXYPlotZeroData", "chart21"},
        {"TIME_SERIES_CHART_SCROLL", "createTimeSeriesChartInScrollPane", "chart22"},
        {"SINGLE_SERIES_BAR_CHART", "createSingleSeriesBarChart", "chart23"},
        {"DYNAMIC_CHART", "createDynamicXYChart", "chart24"},
        {"OVERLAID_CHART", "createOverlaidChart", "chart25"},
        {"HORIZONTALLY_COMBINED_CHART", "createHorizontallyCombinedChart", "chart26"},
        {"VERTICALLY_COMBINED_CHART", "createVerticallyCombinedChart", "chart27"},
        {"COMBINED_OVERLAID_CHART", "createCombinedAndOverlaidChart1", "chart28"},
        {"COMBINED_OVERLAID_DYNAMIC_CHART", "createCombinedAndOverlaidDynamicXYChart", "chart29"},
        {"THERMOMETER_CHART", "createThermometerChart", "chart30"},
        {"METER_CHART", "createMeterChartCircle", "chart31"},
        {"GANTT_CHART", "createGanttChart", "chart32"},
        {"METER_CHART2", "createMeterChartPie", "chart33"},
        {"METER_CHART3", "createMeterChartChord", "chart34"},
        {"COMPASS_CHART", "createCompassChart", "chart35"},
    };

    /** Base class name for localised resources. */
    public static final String BASE_RESOURCE_CLASS
        = "org.jfree.chart.demo.resources.DemoResources";

    /** Localised resources. */
    private ResourceBundle resources;

    /** An array of charts. */
    private JFreeChart[] charts = new JFreeChart[CHART_COMMANDS.length];

    /**
     * Default constructor.
     */
    public JFreeChartDemoBase() {
        this.resources = ResourceBundle.getBundle(BASE_RESOURCE_CLASS);
    }

    /**
     * Returns a chart.
     *
     * @param i  the chart index.
     *
     * @return a chart.
     */
    public JFreeChart getChart(int i) {

        if ((i < 0) && (i >= charts.length)) {
            i = 0;
        }

        if (charts[i] == null) {
            /// Utilise reflection to invoke method to create new chart if required.
            try {
                Method method = getClass().getDeclaredMethod(CHART_COMMANDS[i][1], null);
                charts[i] = (JFreeChart) method.invoke(this, null);
            }
            catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return charts[i];
    }

    /**
     * This makes the resources bundle available.  Basically an optimisation so
     * the demo servlet can access the same resource file.
     * @return the resources bundle.
     */
    public ResourceBundle getResources() {
      return this.resources;
    }

    /**
     * Create a horizontal bar chart.
     *
     * @return a horizontal bar chart.
     */
    public JFreeChart createHorizontalBarChart() {

        // create a default chart based on some sample data...
        String title = resources.getString("bar.horizontal.title");
        String domain = resources.getString("bar.horizontal.domain");
        String range = resources.getString("bar.horizontal.range");

        CategoryDataset data = DemoDatasetFactory.createCategoryDataset();
        JFreeChart chart = ChartFactory.createBarChart(title, domain, range, data,
                                                       PlotOrientation.HORIZONTAL,
                                                       true,
                                                       true,
                                                       false);

        // then customise it a little...
        chart.getLegend().setAnchor(Legend.EAST);
        chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 0, 1000, Color.orange));
        CategoryPlot plot = chart.getCategoryPlot();
        plot.setRangeCrosshairVisible(false);
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        axis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        axis.setInverted(true);

        return chart;

    }

    /**
     * Creates and returns a sample stacked horizontal bar chart.
     *
     * @return a sample stacked horizontal bar chart.
     */
    public JFreeChart createStackedHorizontalBarChart() {

        // create a default chart based on some sample data...
        String title = resources.getString("bar.horizontal-stacked.title");
        String domain = resources.getString("bar.horizontal-stacked.domain");
        String range = resources.getString("bar.horizontal-stacked.range");

        CategoryDataset data = DemoDatasetFactory.createCategoryDataset();
        JFreeChart chart = ChartFactory.createStackedBarChart(title, domain, range,
                                                              data,
                                                              PlotOrientation.HORIZONTAL,
                                                              true,
                                                              true,
                                                              false);

        // then customise it a little...
        chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.blue));
        return chart;

    }

    /**
     * Creates and returns a sample vertical bar chart.
     *
     * @return a sample vertical bar chart.
     */
    public JFreeChart createVerticalBarChart() {

        String title = resources.getString("bar.vertical.title");
        String domain = resources.getString("bar.vertical.domain");
        String range = resources.getString("bar.vertical.range");

        CategoryDataset data = DemoDatasetFactory.createCategoryDataset();
        JFreeChart chart = ChartFactory.createBarChart(title, domain, range, data,
                                                       PlotOrientation.VERTICAL,
                                                       true,
                                                       true,
                                                       false);

        // then customise it a little...
        chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.red));
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.setForegroundAlpha(0.9f);
        NumberAxis verticalAxis = (NumberAxis) plot.getRangeAxis();
        verticalAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
        return chart;
    }

    /**
     * Creates and returns a sample vertical 3D bar chart.
     *
     * @return a sample vertical 3D bar chart.
     */
    public JFreeChart createVertical3DBarChart() {

        // create a default chart based on some sample data...
        String title = resources.getString("bar.vertical3D.title");
        String domain = resources.getString("bar.vertical3D.domain");
        String range = resources.getString("bar.vertical3D.range");

        CategoryDataset data = DemoDatasetFactory.createCategoryDataset();
        JFreeChart chart = ChartFactory.createBarChart3D(
            title,
            domain,
            range, data,
            PlotOrientation.VERTICAL,
            true,
            true,
            false
        );

        // then customise it a little...
        chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.blue));
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.setForegroundAlpha(0.75f);
        return chart;

    }

    /**
     * Creates and returns a sample stacked vertical bar chart.
     *
     * @return a sample stacked vertical bar chart.
     */
    public JFreeChart createVerticalStackedBarChart() {

        // create a default chart based on some sample data...
        String title = resources.getString("bar.vertical-stacked.title");
        String domain = resources.getString("bar.vertical-stacked.domain");
        String range = resources.getString("bar.vertical-stacked.range");

        CategoryDataset data = DemoDatasetFactory.createCategoryDataset();
        JFreeChart chart
            = ChartFactory.createStackedBarChart(title, domain, range, data,
                                                 PlotOrientation.VERTICAL,
                                                 true,
                                                 true,
                                                 false);

        // then customise it a little...
        chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.red));
        return chart;

    }

    /**
     * Creates and returns a sample stacked vertical 3D bar chart.