import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import ChartDirector.*;
public class linearzonemeter implements DemoModule
{
//Name of demo program
public String toString() { return "Linear Zone Meter"; }
//Number of charts produced in this demo
public int getNoOfCharts() { return 1; }
//Main code for creating charts
public void createChart(ChartViewer viewer, int index)
{
// The value to display on the meter
double value = 85;
// Create an LinearMeter object of size 210 x 45 pixels, using silver
// background with a 2 pixel black 3D depressed border.
LinearMeter m = new LinearMeter(210, 45, Chart.silverColor(), 0, -2);
// Set the scale region top-left corner at (5, 5), with size of 200 x 20
// pixels. The scale labels are located on the bottom (implies horizontal
// meter)
m.setMeter(5, 5, 200, 20, Chart.Bottom);
// Set meter scale from 0 - 100
m.setScale(0, 100);
// Add a title at the bottom of the meter with a 1 pixel raised 3D border
m.addTitle2(Chart.Bottom, "Battery Level", "Arial Bold", 8).setBackground(
Chart.Transparent, -1, 1);
// Set 3 zones of different colors to represent Good/Weak/Bad data ranges
m.addZone(50, 100, 0x99ff99, "Good");
m.addZone(20, 50, 0xffff66, "Weak");
m.addZone(0, 20, 0xffcccc, "Bad");
// Add empty labels (just need the ticks) at 0/20/50/80 as separators for
// zones
m.addLabel(0, " ");
m.addLabel(20, " ");
m.addLabel(50, " ");
m.addLabel(100, " ");
// Add a semi-transparent blue (800000ff) pointer at the specified value,
// using triangular pointer shape
m.addPointer(value, 0x800000ff).setShape(Chart.TriangularPointer);
// 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 linearzonemeter();
//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);
}
} |