import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;
public class roundmeter implements DemoModule
{
//Name of demo program
public String toString() { return "Round Meter"; }
//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 value to display on the meter
double value = 72.3;
// Create an AngularMeter object of size 250 x 250 pixels with transparent background
AngularMeter m = new AngularMeter(250, 250, Chart.Transparent);
// Center at (125, 125), scale radius = 111 pixels, scale angle -145 to +145 degrees
m.setMeter(125, 125, 111, -145, 145);
// Add a very light grey (0xeeeeee) circle with radius 123 pixels as background
m.addRing(0, 123, 0xeeeeee);
// Add a grey (0xcccccc) ring between radii 116 and 123 pixels as border
m.addRing(116, 123, 0xcccccc);
// Meter scale is 0 - 100, with major/minor/micro ticks every 10/5/1 units
m.setScale(0, 100, 10, 5, 1);
// Set the scale label style to 15pt Arial Italic. Set the major/minor/micro tick lengths to
// 12/9/6 pixels pointing inwards, and their widths to 2/1/1 pixels.
m.setLabelStyle("Arial Italic", 15);
m.setTickLength(-12, -9, -6);
m.setLineWidth(0, 2, 1, 1);
// Add a smooth color scale to the meter
double[] smoothColorScale = {0, 0x3333ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
0xff0000};
m.addColorScale(smoothColorScale);
// Add a text label centered at (125, 175) with 15pt Arial Italic font
m.addText(125, 175, "CPU", "Arial Italic", 15, Chart.TextColor, Chart.Center);
// Add a red (0xff0000) pointer at the specified value
m.addPointer2(value, 0xff0000);
// 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 roundmeter();
//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);
}
} |