ChartDirector 6.1 (Java Edition)

Glass Bar Shading




This example demonstrates using glass shading effect for bars and gradient color for plot area background. It also demonstrates axis labels on both sides of the plot area.

Glass lighting is a complex shading effect that gives a look and feel of tinted glass or semi-transparent plastic material. This effect involves glare and variation of lighting caused by reflection and refraction inside the material.

Source Code Listing

[JSP Version] jspdemo/glasslightbar.jsp
<%@page import="ChartDirector.*" %>
<%
// The data for the bar chart
double[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

// The labels for the bar chart
String[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005"};

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

// Set the plotarea at (60, 40) and of size 480 x 280 pixels. Use a vertical gradient color from
// light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to white
// (ffffff).
c.setPlotArea(60, 40, 480, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc), -1,
    0xffffff, 0xffffff);

// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

// Add a multi-color bar chart layer using the supplied data. Use glass lighting effect with light
// direction from the left.
c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.glassEffect(Chart.NormalGlare,
    Chart.Left));

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

// Show the same scale on the left and right y-axes
c.syncYAxis();

// Set the left y-axis and right y-axis title using 10pt Arial Bold font
c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);
c.yAxis2().setTitle("USD (millions)", "Arial Bold", 10);

// Set all axes to transparent
c.xAxis().setColors(Chart.Transparent);
c.yAxis().setColors(Chart.Transparent);
c.yAxis2().setColors(Chart.Transparent);

// Set the label styles of all axes to 8pt Arial Bold font
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 8);
c.yAxis2().setLabelStyle("Arial Bold", 8);

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

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

public class glasslightbar implements DemoModule
{
    //Name of demo program
    public String toString() { return "Glass Bar Shading"; }

    //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 bar chart
        double[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

        // The labels for the bar chart
        String[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004",
            "2005"};

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

        // Set the plotarea at (60, 40) and of size 480 x 280 pixels. Use a vertical gradient color
        // from light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines
        // to white (ffffff).
        c.setPlotArea(60, 40, 480, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc),
            -1, 0xffffff, 0xffffff);

        // Add a title to the chart using 18pt Times Bold Italic font
        c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

        // Add a multi-color bar chart layer using the supplied data. Use glass lighting effect with
        // light direction from the left.
        c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.glassEffect(Chart.NormalGlare,
            Chart.Left));

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

        // Show the same scale on the left and right y-axes
        c.syncYAxis();

        // Set the left y-axis and right y-axis title using 10pt Arial Bold font
        c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);
        c.yAxis2().setTitle("USD (millions)", "Arial Bold", 10);

        // Set all axes to transparent
        c.xAxis().setColors(Chart.Transparent);
        c.yAxis().setColors(Chart.Transparent);
        c.yAxis2().setColors(Chart.Transparent);

        // Set the label styles of all axes to 8pt Arial Bold font
        c.xAxis().setLabelStyle("Arial Bold", 8);
        c.yAxis().setLabelStyle("Arial Bold", 8);
        c.yAxis2().setLabelStyle("Arial Bold", 8);

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

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

    //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 glasslightbar();

        //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);
    }
}