ChartDirector 6.1 (Java Edition)

Pie Chart with Legend (2)




This example demonstrates a pie chart with a legend box, together with many effects, such as gradient color background, rounded frame, soft drop shadow, custom sector colors, sector gradient shading, customized sector labels and using CDML and Parameter Substitution and Formatting to format legend text.

Source Code Listing

[JSP Version] jspdemo/legendpie2.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 320 pixels. Use a vertical gradient color from light blue
// (99ccff) to white (ffffff) spanning the top 100 pixels as background. Set border to grey
// (888888). Use rounded corners. Enable soft drop shadow.
PieChart c = new PieChart(600, 320);
c.setBackground(c.linearGradientColor(0, 0, 0, 100, 0x99ccff, 0xffffff), 0x888888);
c.setRoundedFrame();
c.setDropShadow();

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

// Set the center of the pie at (160, 165) and the radius to 110 pixels
c.setPieSize(160, 165, 110);

// Draw the pie in 3D with a pie thickness of 25 pixels
c.set3D(25);

// 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
c.setSectorStyle(Chart.LocalGradientShading);

// Use the side label layout method, with the labels positioned 16 pixels from the pie bounding box
c.setLabelLayout(Chart.SideLayout, 16);

// Show only the sector number as the sector label
c.setLabelFormat("{={sector}+1}");

// Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border
c.setLabelStyle("Arial Bold", 10).setBackground(Chart.Transparent, 0x444444);

// Add a legend box, with the center of the left side anchored at (330, 175), and using 10pt Arial
// Bold Italic font
LegendBox b = c.addLegend(330, 175, true, "Arial Bold Italic", 10);
b.setAlignment(Chart.Left);

// Set the legend box border to dark grey (444444), and with rounded conerns
b.setBackground(Chart.Transparent, 0x444444);
b.setRoundedCorners();

// Set the legend box margin to 16 pixels, and the extra line spacing between the legend entries as
// 5 pixels
b.setMargin(16);
b.setKeySpacing(0, 5);

// Set the legend box icon to have no border (border color same as fill color)
b.setKeyBorder(Chart.SameAsMainColor);

// Set the legend text to show the sector number, followed by a 120 pixels wide block showing the
// sector label, and a 40 pixels wide block showing the percentage
b.setText(
    "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*>" +
    "<*block,width=40,halign=right*>{percent}<*/*>%");

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Pie Chart with Legend (2)
</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/legendpie2.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class legendpie2 implements DemoModule
{
    //Name of demo program
    public String toString() { return "Pie Chart with Legend (2)"; }

    //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 320 pixels. Use a vertical gradient color from
        // light blue (99ccff) to white (ffffff) spanning the top 100 pixels as background. Set
        // border to grey (888888). Use rounded corners. Enable soft drop shadow.
        PieChart c = new PieChart(600, 320);
        c.setBackground(c.linearGradientColor(0, 0, 0, 100, 0x99ccff, 0xffffff), 0x888888);
        c.setRoundedFrame();
        c.setDropShadow();

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

        // Set the center of the pie at (160, 165) and the radius to 110 pixels
        c.setPieSize(160, 165, 110);

        // Draw the pie in 3D with a pie thickness of 25 pixels
        c.set3D(25);

        // 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
        c.setSectorStyle(Chart.LocalGradientShading);

        // Use the side label layout method, with the labels positioned 16 pixels from the pie
        // bounding box
        c.setLabelLayout(Chart.SideLayout, 16);

        // Show only the sector number as the sector label
        c.setLabelFormat("{={sector}+1}");

        // Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border
        c.setLabelStyle("Arial Bold", 10).setBackground(Chart.Transparent, 0x444444);

        // Add a legend box, with the center of the left side anchored at (330, 175), and using 10pt
        // Arial Bold Italic font
        LegendBox b = c.addLegend(330, 175, true, "Arial Bold Italic", 10);
        b.setAlignment(Chart.Left);

        // Set the legend box border to dark grey (444444), and with rounded conerns
        b.setBackground(Chart.Transparent, 0x444444);
        b.setRoundedCorners();

        // Set the legend box margin to 16 pixels, and the extra line spacing between the legend
        // entries as 5 pixels
        b.setMargin(16);
        b.setKeySpacing(0, 5);

        // Set the legend box icon to have no border (border color same as fill color)
        b.setKeyBorder(Chart.SameAsMainColor);

        // Set the legend text to show the sector number, followed by a 120 pixels wide block
        // showing the sector label, and a 40 pixels wide block showing the percentage
        b.setText(
            "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*>" +
            "<*block,width=40,halign=right*>{percent}<*/*>%");

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

        //include tool tip for the chart
        viewer.setImageMap(c.getHTMLImageMap("clickable", "",
            "title='{label}: US${value}K ({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 legendpie2();

        //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);
    }
}