ChartDirector 6.1 (Java Edition)

White Vertical Bar Meters


          

This example demonstrates vertical bar meters in a white coloring scheme, and with bars in various shading styles.

Source Code Listing

[JSP Version] jspdemo/whitevbarmeter.jsp
<%@page import="ChartDirector.*" %>
<%@page import="javax.servlet.http.*" %>
<%!
// Function to create the demo charts
String createChart(HttpServletRequest request, int chartIndex)
{
    // The value to display on the meter
    double value = 74.25;

    // Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee)
    // backgruond and a grey (0xbbbbbb) 3-pixel thick rounded frame
    LinearMeter m = new LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb);
    m.setRoundedFrame(Chart.Transparent);
    m.setThickFrame(3);

    // Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale
    // labels are located on the left (default - implies vertical meter).
    m.setMeter(28, 33, 20, 194);

    // Set meter scale from 0 - 100, with a tick every 10 units
    m.setScale(0, 100, 10);

    // Demostrate different types of color scales
    double[] smoothColorScale = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
        0xff0000};
    double[] stepColorScale = {0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100};
    double[] highColorScale = {70, Chart.Transparent, 100, 0xff0000};
    double[] lowColorScale = {0, 0x0000ff, 30, Chart.Transparent};

    if (chartIndex == 0) {
        // Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners
        m.addBar(0, value, 0x0088ff, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
        // Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale)
        m.addColorScale(smoothColorScale, 53, 6);
    } else if (chartIndex == 1) {
         // Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel rounded
         // corners
        m.addBar(0, value, 0x00cc00, Chart.barLighting(), 4);
        // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from
        // 0 to 8
        m.addColorScale(highColorScale, 52, 0, 52, 8);
        // Add a low only color scale at x = 52 (right of meter scale) with thickness varying from 8
        // to 0
        m.addColorScale(lowColorScale, 52, 8, 52, 0);
    } else if (chartIndex == 2) {
        // Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded corners
        m.addBar(0, value, 0x8833dd, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
        // Add a high only color scale at x = 52 (right of meter scale) with thickness varying from
        // 0 to 8
        m.addColorScale(highColorScale, 52, 0, 52, 8);
    } else if (chartIndex == 3) {
         // Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect
        m.addBar(0, value, 0xff8800, Chart.cylinderEffect());
        // Add a high only color scale at x = 53 (right of meter scale)
        m.addColorScale(highColorScale, 53, 6);
    } else if (chartIndex == 4) {
        // Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded corners
        m.addBar(0, value, 0xee3333, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
        // Add a step color scale at x = 53 (right of meter scale)
        m.addColorScale(stepColorScale, 53, 6);
    } else {
         // Add a grey (0xaaaaaa) bar from 0 to value
        m.addBar(0, value, 0xaaaaaa);
        // Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from 0
        // to 8
        m.addColorScale(smoothColorScale, 52, 0, 52, 8);
    }

    // Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background
    m.addTitle("Temp C", "Arial Bold", 8, Chart.TextColor).setBackground(0xbbbbbb);

    // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold
    // font on a black (0x000000) background with rounded border.
    TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(value, "2"),
        "Arial Bold", 8, 0xffffff, Chart.Bottom);
    t.setBackground(0x000000);
    t.setRoundedCorners(3);
    t.setMargin2(5, 5, 2, 1);

    // Output the chart
    return m.makeSession(request, "chart" + chartIndex);
}
%>
<%
String chart0URL = createChart(request, 0);
String chart1URL = createChart(request, 1);
String chart2URL = createChart(request, 2);
String chart3URL = createChart(request, 3);
String chart4URL = createChart(request, 4);
String chart5URL = createChart(request, 5);
%>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    White Vertical Bar Meters
</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?"+chart0URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart1URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart2URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart3URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart4URL)%>'>
<img src='<%=response.encodeURL("getchart.jsp?"+chart5URL)%>'>
</body>
</html>

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

public class whitevbarmeter implements DemoModule
{
    //Name of demo program
    public String toString() { return "White Vertical Bar Meters"; }

    //Number of charts produced in this demo
    public int getNoOfCharts() { return 6; }

    //Main code for creating charts
    public void createChart(ChartViewer viewer, int chartIndex)
    {
        // The value to display on the meter
        double value = 74.25;

        // Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee)
        // backgruond and a grey (0xbbbbbb) 3-pixel thick rounded frame
        LinearMeter m = new LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb);
        m.setRoundedFrame(Chart.Transparent);
        m.setThickFrame(3);

        // Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The scale
        // labels are located on the left (default - implies vertical meter).
        m.setMeter(28, 33, 20, 194);

        // Set meter scale from 0 - 100, with a tick every 10 units
        m.setScale(0, 100, 10);

        // Demostrate different types of color scales
        double[] smoothColorScale = {0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
            0xff0000};
        double[] stepColorScale = {0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100};
        double[] highColorScale = {70, Chart.Transparent, 100, 0xff0000};
        double[] lowColorScale = {0, 0x0000ff, 30, Chart.Transparent};

        if (chartIndex == 0) {
            // Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded
            // corners
            m.addBar(0, value, 0x0088ff, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
            // Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale)
            m.addColorScale(smoothColorScale, 53, 6);
        } else if (chartIndex == 1) {
             // Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel
             // rounded corners
            m.addBar(0, value, 0x00cc00, Chart.barLighting(), 4);
            // Add a high only color scale at x = 52 (right of meter scale) with thickness varying
            // from 0 to 8
            m.addColorScale(highColorScale, 52, 0, 52, 8);
            // Add a low only color scale at x = 52 (right of meter scale) with thickness varying
            // from 8 to 0
            m.addColorScale(lowColorScale, 52, 8, 52, 0);
        } else if (chartIndex == 2) {
            // Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded
            // corners
            m.addBar(0, value, 0x8833dd, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
            // Add a high only color scale at x = 52 (right of meter scale) with thickness varying
            // from 0 to 8
            m.addColorScale(highColorScale, 52, 0, 52, 8);
        } else if (chartIndex == 3) {
             // Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect
            m.addBar(0, value, 0xff8800, Chart.cylinderEffect());
            // Add a high only color scale at x = 53 (right of meter scale)
            m.addColorScale(highColorScale, 53, 6);
        } else if (chartIndex == 4) {
            // Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded
            // corners
            m.addBar(0, value, 0xee3333, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
            // Add a step color scale at x = 53 (right of meter scale)
            m.addColorScale(stepColorScale, 53, 6);
        } else {
             // Add a grey (0xaaaaaa) bar from 0 to value
            m.addBar(0, value, 0xaaaaaa);
            // Add a smooth color scale at x = 52 (right of meter scale) with thickness varying from
            // 0 to 8
            m.addColorScale(smoothColorScale, 52, 0, 52, 8);
        }

        // Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background
        m.addTitle("Temp C", "Arial Bold", 8, Chart.TextColor).setBackground(0xbbbbbb);

        // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial
        // Bold font on a black (0x000000) background with rounded border.
        TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(value, "2"),
            "Arial Bold", 8, 0xffffff, Chart.Bottom);
        t.setBackground(0x000000);
        t.setRoundedCorners(3);
        t.setMargin2(5, 5, 2, 1);

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

        //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);
        frame.getContentPane().setLayout(new FlowLayout(FlowLayout.LEFT));
        frame.setSize(800, 450);

        // Create the charts and put them in the content pane
        for (int i = 0; i < demo.getNoOfCharts(); ++i)
        {
            ChartViewer viewer = new ChartViewer();
            demo.createChart(viewer, i);
            frame.getContentPane().add(viewer);
        }

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