ChartDirector 6.1 (Java Edition)

Black Vertical Bar Meters


          

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

Source Code Listing

[JSP Version] jspdemo/blackvbarmeter.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 = 66.77;

    // Create a LinearMeter object of size 70 x 260 pixels with black background and rounded corners
    LinearMeter m = new LinearMeter(70, 260, 0x000000);
    m.setRoundedFrame(Chart.Transparent);

    // Set the default text and line colors to white (0xffffff)
    m.setColor(Chart.TextColor, 0xffffff);
    m.setColor(Chart.LineColor, 0xffffff);

    // Set the scale region top-left corner at (36, 30), with size of 20 x 196 pixels. The scale
    // labels are located on the left (default - implies vertical meter).
    m.setMeter(36, 30, 20, 196);

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

    // Add the chart title at the top center
    TextBox title = m.addText(m.getWidth() / 2, 5, "Temp C", "Arial Bold", 8, Chart.TextColor,
        Chart.TopCenter);

    // Move the scale labels 8 pixels from the meter scale to make room for the color scale
    m.setLabelPos(false, 8);

    // 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[] highLowColorScale = {0, 0x0000ff, 40, Chart.Transparent, 60, Chart.Transparent, 100,
        0xff0000};
    double[] highColorScale = {70, Chart.Transparent, 100, 0xff0000};

    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 4-pixel thick smooth color scale at x = 29 (left of meter scale)
        m.addColorScale(smoothColorScale, 29, 4);
    } else if (chartIndex == 1) {
         // Add a yellow (0xCC9922) bar from 0 to value with bar lighting effect
        m.addBar(0, value, 0xcc9922, Chart.barLighting());
        // Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale)
        m.addColorScale(smoothColorScale, 29, 4);

        // Set the title style to black text on a yellow (0xcc9922) background with rounded corners
        title.setFontColor(0x000000);
        title.setBackground(0xcc9922);
        title.setRoundedCorners(2);
    } else if (chartIndex == 2) {
         // Add a grey (0xaaaaaa) bar from 0 to value with bar lighting effect
        m.addBar(0, value, 0xaaaaaa, Chart.barLighting());
        // Add a 4-pixel high/low color scale at x = 29 (left of meter scale)
        m.addColorScale(highLowColorScale, 29, 4);
    } else if (chartIndex == 3) {
         // Add a brown (0xbb6622) bar from 0 to value with cylinder lighting effect
        m.addBar(0, value, 0xbb6622, Chart.cylinderEffect());
        // Add a 4 pixel thick brown (0xbb6622) frame
        m.setThickFrame(4, 0xbb6622);
        // Add a high only color scale at x = 29 (left of meter scale)
        m.addColorScale(highColorScale, 29, 4);
    } else if (chartIndex == 4) {
        // Add a purple (0x7755ee) bar from 0 to value
        m.addBar(0, value, 0x7755ee);
        // Add a 4 pixel thick purple (0x880088) frame
        m.setThickFrame(4, 0x880088);
        // Add a 4-pixel high/low color scale at x = 29 (left of meter scale)
        m.addColorScale(highLowColorScale, 29, 4);
    } else {
         // Add a green (0x00bb00) bar from 0 to value with soft lighting effect and 4 pixel rounded
         // corners
        m.addBar(0, value, 0x00bb00, Chart.softLighting(), 4);
        // Add a 4-pixel step color scale at x = 29 (left of meter scale)
        m.addColorScale(stepColorScale, 29, 4);
    }

    // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial Bold
    // font on a black (0x000000) background with depressed grey (0x333333) rounded border.
    TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 7, m.formatValue(value, "2"),
        "Arial Bold", 8, 0xffffff, Chart.BottomCenter);
    t.setBackground(0x000000, 0x333333, -1);
    t.setRoundedCorners(3);

    // 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">
    Black 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/blackvbarmeter.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;

public class blackvbarmeter implements DemoModule
{
    //Name of demo program
    public String toString() { return "Black 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 = 66.77;

        // Create a LinearMeter object of size 70 x 260 pixels with black background and rounded
        // corners
        LinearMeter m = new LinearMeter(70, 260, 0x000000);
        m.setRoundedFrame(Chart.Transparent);

        // Set the default text and line colors to white (0xffffff)
        m.setColor(Chart.TextColor, 0xffffff);
        m.setColor(Chart.LineColor, 0xffffff);

        // Set the scale region top-left corner at (36, 30), with size of 20 x 196 pixels. The scale
        // labels are located on the left (default - implies vertical meter).
        m.setMeter(36, 30, 20, 196);

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

        // Add the chart title at the top center
        TextBox title = m.addText(m.getWidth() / 2, 5, "Temp C", "Arial Bold", 8, Chart.TextColor,
            Chart.TopCenter);

        // Move the scale labels 8 pixels from the meter scale to make room for the color scale
        m.setLabelPos(false, 8);

        // 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[] highLowColorScale = {0, 0x0000ff, 40, Chart.Transparent, 60, Chart.Transparent,
            100, 0xff0000};
        double[] highColorScale = {70, Chart.Transparent, 100, 0xff0000};

        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 4-pixel thick smooth color scale at x = 29 (left of meter scale)
            m.addColorScale(smoothColorScale, 29, 4);
        } else if (chartIndex == 1) {
             // Add a yellow (0xCC9922) bar from 0 to value with bar lighting effect
            m.addBar(0, value, 0xcc9922, Chart.barLighting());
            // Add a 4-pixel thick smooth color scale at x = 29 (left of meter scale)
            m.addColorScale(smoothColorScale, 29, 4);

            // Set the title style to black text on a yellow (0xcc9922) background with rounded
            // corners
            title.setFontColor(0x000000);
            title.setBackground(0xcc9922);
            title.setRoundedCorners(2);
        } else if (chartIndex == 2) {
             // Add a grey (0xaaaaaa) bar from 0 to value with bar lighting effect
            m.addBar(0, value, 0xaaaaaa, Chart.barLighting());
            // Add a 4-pixel high/low color scale at x = 29 (left of meter scale)
            m.addColorScale(highLowColorScale, 29, 4);
        } else if (chartIndex == 3) {
             // Add a brown (0xbb6622) bar from 0 to value with cylinder lighting effect
            m.addBar(0, value, 0xbb6622, Chart.cylinderEffect());
            // Add a 4 pixel thick brown (0xbb6622) frame
            m.setThickFrame(4, 0xbb6622);
            // Add a high only color scale at x = 29 (left of meter scale)
            m.addColorScale(highColorScale, 29, 4);
        } else if (chartIndex == 4) {
            // Add a purple (0x7755ee) bar from 0 to value
            m.addBar(0, value, 0x7755ee);
            // Add a 4 pixel thick purple (0x880088) frame
            m.setThickFrame(4, 0x880088);
            // Add a 4-pixel high/low color scale at x = 29 (left of meter scale)
            m.addColorScale(highLowColorScale, 29, 4);
        } else {
             // Add a green (0x00bb00) bar from 0 to value with soft lighting effect and 4 pixel
             // rounded corners
            m.addBar(0, value, 0x00bb00, Chart.softLighting(), 4);
            // Add a 4-pixel step color scale at x = 29 (left of meter scale)
            m.addColorScale(stepColorScale, 29, 4);
        }

        // Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt Arial
        // Bold font on a black (0x000000) background with depressed grey (0x333333) rounded border.
        TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 7, m.formatValue(value, "2"),
            "Arial Bold", 8, 0xffffff, Chart.BottomCenter);
        t.setBackground(0x000000, 0x333333, -1);
        t.setRoundedCorners(3);

        // 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 blackvbarmeter();

        //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);
    }
}