ganttdemo1.java

在软件开发中用来绘制各种图表的源码

/* ---------------
 * GanttDemo1.java
 * ---------------
 * (C) Copyright 2002-2005, by Object Refinery Limited.
 *
 */

package demo;

import java.util.Calendar;
import java.util.Date;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.GanttRenderer;
import org.jfree.data.category.IntervalCategoryDataset;
import org.jfree.data.gantt.Task;
import org.jfree.data.gantt.TaskSeries;
import org.jfree.data.gantt.TaskSeriesCollection;
import org.jfree.data.time.SimpleTimePeriod;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * A simple demonstration application showing how to create a Gantt chart.
 * <P>
 * This demo is intended to show the conceptual approach rather than being a 
 * polished implementation.
 */
public class GanttDemo1 extends ApplicationFrame {

    /**
     * Creates a new demo.
     *
     * @param title  the frame title.
     */
    public GanttDemo1(String title) {
        super(title);
        JPanel chartPanel = createDemoPanel();
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);
    }
    
    /**
     * Creates a sample dataset for a Gantt chart.
     *
     * @return The dataset.
     */
    public static IntervalCategoryDataset createDataset() {

        TaskSeries s1 = new TaskSeries("Scheduled");
        s1.add(new Task("Write Proposal",
               new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
                                    date(5, Calendar.APRIL, 2001))));
        s1.add(new Task("Obtain Approval", new SimpleTimePeriod(date(9, 
                Calendar.APRIL, 2001), date(9, Calendar.APRIL, 2001))));
        s1.add(new Task("Requirements Analysis",
               new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
                                    date(5, Calendar.MAY, 2001))));
        s1.add(new Task("Design Phase",
               new SimpleTimePeriod(date(6, Calendar.MAY, 2001),
                                    date(30, Calendar.MAY, 2001))));
        s1.add(new Task("Design Signoff",
               new SimpleTimePeriod(date(2, Calendar.JUNE, 2001),
                                    date(2, Calendar.JUNE, 2001))));
        s1.add(new Task("Alpha Implementation",
               new SimpleTimePeriod(date(3, Calendar.JUNE, 2001),
                                    date(31, Calendar.JULY, 2001))));
        s1.add(new Task("Design Review",
               new SimpleTimePeriod(date(1, Calendar.AUGUST, 2001),
                                    date(8, Calendar.AUGUST, 2001))));
        s1.add(new Task("Revised Design Signoff",
               new SimpleTimePeriod(date(10, Calendar.AUGUST, 2001),
                                    date(10, Calendar.AUGUST, 2001))));
        s1.add(new Task("Beta Implementation",
               new SimpleTimePeriod(date(12, Calendar.AUGUST, 2001),
                                    date(12, Calendar.SEPTEMBER, 2001))));
        s1.add(new Task("Testing",
               new SimpleTimePeriod(date(13, Calendar.SEPTEMBER, 2001),
                                    date(31, Calendar.OCTOBER, 2001))));
        s1.add(new Task("Final Implementation",
               new SimpleTimePeriod(date(1, Calendar.NOVEMBER, 2001),
                                    date(15, Calendar.NOVEMBER, 2001))));
        s1.add(new Task("Signoff",
               new SimpleTimePeriod(date(28, Calendar.NOVEMBER, 2001),
                                    date(30, Calendar.NOVEMBER, 2001))));

        TaskSeries s2 = new TaskSeries("Actual");
        s2.add(new Task("Write Proposal",
               new SimpleTimePeriod(date(1, Calendar.APRIL, 2001),
                                    date(5, Calendar.APRIL, 2001))));
        s2.add(new Task("Obtain Approval",
               new SimpleTimePeriod(date(9, Calendar.APRIL, 2001),
                                    date(9, Calendar.APRIL, 2001))));
        s2.add(new Task("Requirements Analysis",
               new SimpleTimePeriod(date(10, Calendar.APRIL, 2001),
                                    date(15, Calendar.MAY, 2001))));
        s2.add(new Task("Design Phase",
               new SimpleTimePeriod(date(15, Calendar.MAY, 2001),
                                    date(17, Calendar.JUNE, 2001))));
        s2.add(new Task("Design Signoff",
               new SimpleTimePeriod(date(30, Calendar.JUNE, 2001),
                                    date(30, Calendar.JUNE, 2001))));
        s2.add(new Task("Alpha Implementation",
               new SimpleTimePeriod(date(1, Calendar.JULY, 2001),
                                    date(12, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Design Review",
               new SimpleTimePeriod(date(12, Calendar.SEPTEMBER, 2001),
                                    date(22, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Revised Design Signoff",
               new SimpleTimePeriod(date(25, Calendar.SEPTEMBER, 2001),
                                    date(27, Calendar.SEPTEMBER, 2001))));
        s2.add(new Task("Beta Implementation",
               new SimpleTimePeriod(date(27, Calendar.SEPTEMBER, 2001),
                                    date(30, Calendar.OCTOBER, 2001))));
        s2.add(new Task("Testing",
               new SimpleTimePeriod(date(31, Calendar.OCTOBER, 2001),
                                    date(17, Calendar.NOVEMBER, 2001))));
        s2.add(new Task("Final Implementation",
               new SimpleTimePeriod(date(18, Calendar.NOVEMBER, 2001),
                                    date(5, Calendar.DECEMBER, 2001))));
        s2.add(new Task("Signoff",
               new SimpleTimePeriod(date(10, Calendar.DECEMBER, 2001),
                                    date(11, Calendar.DECEMBER, 2001))));

        TaskSeriesCollection collection = new TaskSeriesCollection();
        collection.add(s1);
        collection.add(s2);

        return collection;
    }

    /**
     * Utility method for creating <code>Date</code> objects.
     *
     * @param day  the date.
     * @param month  the month.
     * @param year  the year.
     *
     * @return a date.
     */
    private static Date date(int day, int month, int year) {

        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month, day);
        Date result = calendar.getTime();
        return result;

    }
        
    /**
     * Creates a chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return The chart.
     */
    private static JFreeChart createChart(IntervalCategoryDataset dataset) {
        JFreeChart chart = ChartFactory.createGanttChart(
            "Gantt Chart Demo",  // chart title
            "Task",              // domain axis label
            "Date",              // range axis label
            dataset,             // data
            true,                // include legend
            true,                // tooltips
            false                // urls
        );    
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        plot.getDomainAxis().setMaximumCategoryLabelWidthRatio(10.0f);
        GanttRenderer renderer = (GanttRenderer) plot.getRenderer();
        renderer.setDrawBarOutline(false);
        return chart;    
    }
    
    /**
     * Creates a panel for the demo (used by SuperDemo.java).
     * 
     * @return A panel.
     */
    public static JPanel createDemoPanel() {
        JFreeChart chart = createChart(createDataset());
        return new ChartPanel(chart);
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        GanttDemo1 demo = new GanttDemo1("Gantt Chart Demo 1");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}