ChartDirector 6.1 (Java Edition)

Icon Pie Chart (1)




This example demonstrates using CDML and Parameter Substitution and Formatting to include icons in sector labels. It also demonstrates gradient background color, glass shading effect for the title and rounded corners for the chart frame.

Source Code Listing

[JSP Version] jspdemo/iconpie.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the pie chart
double[] data = {72, 18, 15, 12};

// The depths for the sectors
double[] depths = {30, 20, 10, 10};

// The labels for the pie chart
String[] labels = {"Sunny", "Cloudy", "Rainy", "Snowy"};

// The icons for the sectors
String[] icons = {"sun.png", "cloud.png", "rain.png", "snowy.png"};

// Create a PieChart object of size 400 x 310 pixels, with a blue (CCCCFF) vertical metal gradient
// background, black border, 1 pixel 3D border effect and rounded corners
PieChart c = new PieChart(400, 310, Chart.metalColor(0xccccff, 0), 0x000000, 1);
c.setRoundedFrame();

//Set search path to current JSP directory for loading icon images
c.setSearchPath(getServletConfig().getServletContext(), request);

// Set the center of the pie at (200, 180) and the radius to 100 pixels
c.setPieSize(200, 180, 100);

// Add a title box using 15pt Times Bold Italic font, on a blue (CCCCFF) background with glass
// effect
c.addTitle("Weather Profile in Wonderland", "Times New Roman Bold Italic", 15).setBackground(
    0xccccff, 0x000000, Chart.glassEffect());

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

// Add icons to the chart as a custom field
c.addExtraField(icons);

// Configure the sector labels using CDML to include the icon images
c.setLabelFormat("<*block,valign=absmiddle*><*img={field0}*> <*block*>{label}\n{percent}%<*/*><*/*>"
    );

// Draw the pie in 3D with variable 3D depths
c.set3D2(depths);

// Set the start angle to 225 degrees may improve layout when the depths of the sector are sorted in
// descending order, because it ensures the tallest sector is at the back.
c.setStartAngle(225);

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

// Include tool tip for the chart
String imageMap1 = c.getHTMLImageMap("", "", "title='{label}: {value} days ({percent}%)'");
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Icon Pie Chart (1)
</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/iconpie.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class iconpie implements DemoModule
{
    //Name of demo program
    public String toString() { return "Icon Pie Chart (1)"; }

    //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 = {72, 18, 15, 12};

        // The depths for the sectors
        double[] depths = {30, 20, 10, 10};

        // The labels for the pie chart
        String[] labels = {"Sunny", "Cloudy", "Rainy", "Snowy"};

        // The icons for the sectors
        String[] icons = {"sun.png", "cloud.png", "rain.png", "snowy.png"};

        // Create a PieChart object of size 400 x 310 pixels, with a blue (CCCCFF) vertical metal
        // gradient background, black border, 1 pixel 3D border effect and rounded corners
        PieChart c = new PieChart(400, 310, Chart.metalColor(0xccccff, 0), 0x000000, 1);
        c.setRoundedFrame();

        // Set the center of the pie at (200, 180) and the radius to 100 pixels
        c.setPieSize(200, 180, 100);

        // Add a title box using 15pt Times Bold Italic font, on a blue (CCCCFF) background with
        // glass effect
        c.addTitle("Weather Profile in Wonderland", "Times New Roman Bold Italic", 15
            ).setBackground(0xccccff, 0x000000, Chart.glassEffect());

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

        // Add icons to the chart as a custom field
        c.addExtraField(icons);

        // Configure the sector labels using CDML to include the icon images
        c.setLabelFormat(
            "<*block,valign=absmiddle*><*img={field0}*> <*block*>{label}\n{percent}%<*/*><*/*>");

        // Draw the pie in 3D with variable 3D depths
        c.set3D2(depths);

        // Set the start angle to 225 degrees may improve layout when the depths of the sector are
        // sorted in descending order, because it ensures the tallest sector is at the back.
        c.setStartAngle(225);

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

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

        //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);
    }
}