ChartDirector 6.1 (Java Edition)

Simple Gantt Chart




This example demonstrates a simple gantt chart.

This chart is created by using a horizontal box-whisker layer, in which only the "box" part of the box-whisker layer is used. Date/time values are used as box data, resulting in a gantt chart.

The key features demonstrated in this example are:

Source Code Listing

[JSP Version] jspdemo/gantt.jsp
<%@page import="ChartDirector.*" %>
<%@page import="java.util.*" %>
<%
// data for the gantt chart, representing the start date, end date and names for various activities
Date[] startDate = {new GregorianCalendar(2004, 7, 16).getTime(), new GregorianCalendar(2004, 7, 30
    ).getTime(), new GregorianCalendar(2004, 8, 13).getTime(), new GregorianCalendar(2004, 8, 20
    ).getTime(), new GregorianCalendar(2004, 8, 27).getTime(), new GregorianCalendar(2004, 9, 4
    ).getTime(), new GregorianCalendar(2004, 9, 25).getTime(), new GregorianCalendar(2004, 10, 1
    ).getTime(), new GregorianCalendar(2004, 10, 8).getTime()};
Date[] endDate = {new GregorianCalendar(2004, 7, 30).getTime(), new GregorianCalendar(2004, 8, 13
    ).getTime(), new GregorianCalendar(2004, 8, 27).getTime(), new GregorianCalendar(2004, 9, 4
    ).getTime(), new GregorianCalendar(2004, 9, 11).getTime(), new GregorianCalendar(2004, 10, 8
    ).getTime(), new GregorianCalendar(2004, 10, 8).getTime(), new GregorianCalendar(2004, 10, 22
    ).getTime(), new GregorianCalendar(2004, 10, 22).getTime()};
String[] labels = {"Market Research", "Define Specifications", "Overall Archiecture",
    "Project Planning", "Detail Design", "Software Development", "Test Plan", "Testing and QA",
    "User Documentation"};

// Create a XYChart object of size 620 x 280 pixels. Set background color to light blue (ccccff),
// with 1 pixel 3D border effect.
XYChart c = new XYChart(620, 280, 0xccccff, 0x000000, 1);

// Add a title to the chart using 15 points Times Bold Itatic font, with white (ffffff) text on a
// deep blue (000080) background
c.addTitle("Simple Gantt Chart Demo", "Times New Roman Bold Italic", 15, 0xffffff).setBackground(
    0x000080);

// Set the plotarea at (140, 55) and of size 460 x 200 pixels. Use alternative white/grey
// background. Enable both horizontal and vertical grids by setting their colors to grey (c0c0c0).
// Set vertical major grid (represents month boundaries) 2 pixels in width
c.setPlotArea(140, 55, 460, 200, 0xffffff, 0xeeeeee, Chart.LineColor, 0xc0c0c0, 0xc0c0c0
    ).setGridWidth(2, 1, 1, 1);

// swap the x and y axes to create a horziontal box-whisker chart
c.swapXY();

// Set the y-axis scale to be date scale from Aug 16, 2004 to Nov 22, 2004, with ticks every 7 days
// (1 week)
c.yAxis().setDateScale(new GregorianCalendar(2004, 7, 16).getTime(), new GregorianCalendar(2004, 10,
    22).getTime(), 86400 * 7);

// Set multi-style axis label formatting. Month labels are in Arial Bold font in "mmm d" format.
// Weekly labels just show the day of month and use minor tick (by using '-' as first character of
// format string).
c.yAxis().setMultiFormat(Chart.StartOfMonthFilter(), "<*font=Arial Bold*>{value|mmm d}",
    Chart.StartOfDayFilter(), "-{value|d}");

// Set the y-axis to shown on the top (right + swapXY = top)
c.setYAxisOnRight();

// Set the labels on the x axis
c.xAxis().setLabels(labels);

// Reverse the x-axis scale so that it points downwards.
c.xAxis().setReverse();

// Set the horizontal ticks and grid lines to be between the bars
c.xAxis().setTickOffset(0.5);

// Add a green (33ff33) box-whisker layer showing the box only.
c.addBoxWhiskerLayer(Chart.CTime(startDate), Chart.CTime(endDate), null, null, null, 0x00cc00,
    Chart.SameAsMainColor, Chart.SameAsMainColor);

// Output the chart
String chart1URL = c.makeSession(request, "chart1");

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "",
    "title='{xLabel}: {top|mmm dd, yyyy} to {bottom|mmm dd, yyyy}'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Simple Gantt Chart
</div>
<hr color="#000080">
<div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em">
    <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a>
</div>
<img src='<%=response.encodeURL("getchart.jsp?"+chart1URL)%>'
    usemap="#map1" border="0">
<map name="map1"><%=imageMap1%></map>
</body>
</html>

[Java Version] javademo/gantt.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import ChartDirector.*;

public class gantt implements DemoModule
{
    //Name of demo program
    public String toString() { return "Simple Gantt Chart"; }

    //Number of charts produced in this demo
    public int getNoOfCharts() { return 1; }

    //Main code for creating charts
    public void createChart(ChartViewer viewer, int chartIndex)
    {
        // data for the gantt chart, representing the start date, end date and names for various
        // activities
        Date[] startDate = {new GregorianCalendar(2004, 7, 16).getTime(), new GregorianCalendar(
            2004, 7, 30).getTime(), new GregorianCalendar(2004, 8, 13).getTime(),
            new GregorianCalendar(2004, 8, 20).getTime(), new GregorianCalendar(2004, 8, 27
            ).getTime(), new GregorianCalendar(2004, 9, 4).getTime(), new GregorianCalendar(2004, 9,
            25).getTime(), new GregorianCalendar(2004, 10, 1).getTime(), new GregorianCalendar(2004,
            10, 8).getTime()};
        Date[] endDate = {new GregorianCalendar(2004, 7, 30).getTime(), new GregorianCalendar(2004,
            8, 13).getTime(), new GregorianCalendar(2004, 8, 27).getTime(), new GregorianCalendar(
            2004, 9, 4).getTime(), new GregorianCalendar(2004, 9, 11).getTime(),
            new GregorianCalendar(2004, 10, 8).getTime(), new GregorianCalendar(2004, 10, 8
            ).getTime(), new GregorianCalendar(2004, 10, 22).getTime(), new GregorianCalendar(2004,
            10, 22).getTime()};
        String[] labels = {"Market Research", "Define Specifications", "Overall Archiecture",
            "Project Planning", "Detail Design", "Software Development", "Test Plan",
            "Testing and QA", "User Documentation"};

        // Create a XYChart object of size 620 x 280 pixels. Set background color to light blue
        // (ccccff), with 1 pixel 3D border effect.
        XYChart c = new XYChart(620, 280, 0xccccff, 0x000000, 1);

        // Add a title to the chart using 15 points Times Bold Itatic font, with white (ffffff) text
        // on a deep blue (000080) background
        c.addTitle("Simple Gantt Chart Demo", "Times New Roman Bold Italic", 15, 0xffffff
            ).setBackground(0x000080);

        // Set the plotarea at (140, 55) and of size 460 x 200 pixels. Use alternative white/grey
        // background. Enable both horizontal and vertical grids by setting their colors to grey
        // (c0c0c0). Set vertical major grid (represents month boundaries) 2 pixels in width
        c.setPlotArea(140, 55, 460, 200, 0xffffff, 0xeeeeee, Chart.LineColor, 0xc0c0c0, 0xc0c0c0
            ).setGridWidth(2, 1, 1, 1);

        // swap the x and y axes to create a horziontal box-whisker chart
        c.swapXY();

        // Set the y-axis scale to be date scale from Aug 16, 2004 to Nov 22, 2004, with ticks every
        // 7 days (1 week)
        c.yAxis().setDateScale(new GregorianCalendar(2004, 7, 16).getTime(), new GregorianCalendar(
            2004, 10, 22).getTime(), 86400 * 7);

        // Set multi-style axis label formatting. Month labels are in Arial Bold font in "mmm d"
        // format. Weekly labels just show the day of month and use minor tick (by using '-' as
        // first character of format string).
        c.yAxis().setMultiFormat(Chart.StartOfMonthFilter(), "<*font=Arial Bold*>{value|mmm d}",
            Chart.StartOfDayFilter(), "-{value|d}");

        // Set the y-axis to shown on the top (right + swapXY = top)
        c.setYAxisOnRight();

        // Set the labels on the x axis
        c.xAxis().setLabels(labels);

        // Reverse the x-axis scale so that it points downwards.
        c.xAxis().setReverse();

        // Set the horizontal ticks and grid lines to be between the bars
        c.xAxis().setTickOffset(0.5);

        // Add a green (33ff33) box-whisker layer showing the box only.
        c.addBoxWhiskerLayer(Chart.CTime(startDate), Chart.CTime(endDate), null, null, null,
            0x00cc00, Chart.SameAsMainColor, Chart.SameAsMainColor);

        // Output the chart
        viewer.setChart(c);

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='{xLabel}: {top|mmm dd, yyyy} to {bottom|mmm dd, yyyy}'"));
    }

    //Allow this module to run as standalone program for easy testing
    public static void main(String[] args)
    {
        //Instantiate an instance of this demo module
        DemoModule demo = new gantt();

        //Create and set up the main window
        JFrame frame = new JFrame(demo.toString());
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);} });
        frame.getContentPane().setBackground(Color.white);

        // Create the chart and put them in the content pane
        ChartViewer viewer = new ChartViewer();
        demo.createChart(viewer, 0);
        frame.getContentPane().add(viewer);

        // Display the window
        frame.pack();
        frame.setVisible(true);
    }
}