ChartDirector 6.1 (Java Edition)

Exploded Pie Chart




This example demonstrates a pie chart with all sectors exploded. It also demonstrates many effects, such as gradient color background, rounded frame, soft drop shadow, custom sector colors, sector gradient shading, thick sector border, and using CDML and Parameter Substitution and Formatting to format sector labels.

Source Code Listing

[JSP Version] jspdemo/explodedpie.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the pie chart
double[] data = {21, 18, 15, 12, 8, 24};

// The labels for the pie chart
String[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Facilities", "Production"};

// The colors to use for the sectors
int[] colors = {0x66aaee, 0xeebb22, 0xbbbbbb, 0x8844ff, 0xdd2222, 0x009900};

// Create a PieChart object of size 600 x 360 pixels.
PieChart c = new PieChart(600, 360);

// Use the white on black palette, which means the default text and line colors are white
c.setColors(Chart.whiteOnBlackPalette);

// Use a vertical gradient color from deep blue (000066) to blue (0000cc) as background. Use rounded
// corners of 20 pixels radius. Enable soft drop shadow.
c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight(), 0x000066, 0x0000cc));
c.setRoundedFrame(0xffffff, 20);
c.setDropShadow();

// Add a title using 18pt Times New Roman Bold Italic font. Add 16 pixels top margin to the title.
c.addTitle("Exploded Pie Chart Demonstration", "Times New Roman Bold Italic", 18).setMargin2(0, 0,
    16, 0);

// Set the center of the pie at (300, 195) and the radius to 110 pixels
c.setPieSize(300, 195, 110);

// Set the pie data and the pie labels
c.setData(data, labels);

// Set the sector colors
c.setColors2(Chart.DataColor, colors);

// Use local gradient shading for the sectors, with 5 pixels wide semi-transparent white (bbffffff)
// borders
c.setSectorStyle(Chart.LocalGradientShading, 0xbbffffff, 5);

// Use the side label layout method
c.setLabelLayout(Chart.SideLayout);

// Use 10pt Arial Bold as the default label font. Set the label box background color the same as the
// sector color. Use soft lighting effect with light direction from right. Use 8 pixels rounded
// corners.
TextBox t = c.setLabelStyle("Arial Bold", 10, 0x000000);
t.setBackground(Chart.SameAsMainColor, Chart.Transparent, Chart.softLighting(Chart.Right, 0));
t.setRoundedCorners(8);

// Set the sector label format. The label is centered in a 110 pixels wide bounding box. It consists
// of two lines. The first line is the sector name. The second line shows the data value and
// percentage.
c.setLabelFormat(
    "<*block,halign=center,width=110*>{label}\n<*font=Arial,size=8*>US$ {value}M ({percent}%)<*/*>")
    ;

// Explode all sectors 10 pixels from the center
c.setExplode(-1, 10);

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "", "title='{label}: US${value}M ({percent}%)'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Exploded Pie 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/explodedpie.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class explodedpie implements DemoModule
{
    //Name of demo program
    public String toString() { return "Exploded Pie 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)
    {
        // The data for the pie chart
        double[] data = {21, 18, 15, 12, 8, 24};

        // The labels for the pie chart
        String[] labels = {"Labor", "Licenses", "Taxes", "Legal", "Facilities", "Production"};

        // The colors to use for the sectors
        int[] colors = {0x66aaee, 0xeebb22, 0xbbbbbb, 0x8844ff, 0xdd2222, 0x009900};

        // Create a PieChart object of size 600 x 360 pixels.
        PieChart c = new PieChart(600, 360);

        // Use the white on black palette, which means the default text and line colors are white
        c.setColors(Chart.whiteOnBlackPalette);

        // Use a vertical gradient color from deep blue (000066) to blue (0000cc) as background. Use
        // rounded corners of 20 pixels radius. Enable soft drop shadow.
        c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight(), 0x000066, 0x0000cc));
        c.setRoundedFrame(0xffffff, 20);
        c.setDropShadow();

        // Add a title using 18pt Times New Roman Bold Italic font. Add 16 pixels top margin to the
        // title.
        c.addTitle("Exploded Pie Chart Demonstration", "Times New Roman Bold Italic", 18
            ).setMargin2(0, 0, 16, 0);

        // Set the center of the pie at (300, 195) and the radius to 110 pixels
        c.setPieSize(300, 195, 110);

        // Set the pie data and the pie labels
        c.setData(data, labels);

        // Set the sector colors
        c.setColors2(Chart.DataColor, colors);

        // Use local gradient shading for the sectors, with 5 pixels wide semi-transparent white
        // (bbffffff) borders
        c.setSectorStyle(Chart.LocalGradientShading, 0xbbffffff, 5);

        // Use the side label layout method
        c.setLabelLayout(Chart.SideLayout);

        // Use 10pt Arial Bold as the default label font. Set the label box background color the
        // same as the sector color. Use soft lighting effect with light direction from right. Use 8
        // pixels rounded corners.
        TextBox t = c.setLabelStyle("Arial Bold", 10, 0x000000);
        t.setBackground(Chart.SameAsMainColor, Chart.Transparent, Chart.softLighting(Chart.Right, 0)
            );
        t.setRoundedCorners(8);

        // Set the sector label format. The label is centered in a 110 pixels wide bounding box. It
        // consists of two lines. The first line is the sector name. The second line shows the data
        // value and percentage.
        c.setLabelFormat(
            "<*block,halign=center,width=110*>{label}\n<*font=Arial,size=8*>US$ {value}M " +
            "({percent}%)<*/*>");

        // Explode all sectors 10 pixels from the center
        c.setExplode(-1, 10);

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='{label}: US${value}M ({percent}%)'"));
    }

    //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 explodedpie();

        //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);
    }
}