
This example demonstrates a horizontal linear meter with multiple pointers.
ChartDirector 6.1 (Java Edition)
Multi-Pointer Horizontal Meter
Source Code Listing
<%@page import="ChartDirector.*" %> <% // The values to display on the meter double value0 = 30.99; double value1 = 45.35; double value2 = 77.64; // Create an LinearMeter object of size 250 x 75 pixels, using silver background with a 2 pixel // black 3D depressed border. LinearMeter m = new LinearMeter(250, 75, Chart.silverColor(), 0, -2); // Set the scale region top-left corner at (15, 25), with size of 220 x 20 pixels. The scale labels // are located on the top (implies horizontal meter) m.setMeter(15, 25, 220, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Set 0 - 50 as green (99ff99) zone, 50 - 80 as yellow (ffff66) zone, and 80 - 100 as red (ffcccc) // zone m.addZone(0, 50, 0x99ff99); m.addZone(50, 80, 0xffff66); m.addZone(80, 100, 0xffcccc); // Add deep red (000080), deep green (008000) and deep blue (800000) pointers to reflect the values m.addPointer(value0, 0x000080); m.addPointer(value1, 0x008000); m.addPointer(value2, 0x800000); // Add a label at bottom-left (10, 68) using Arial Bold/8pt/red (c00000) m.addText(10, 68, "Temp C", "Arial Bold", 8, 0xc00000, Chart.BottomLeft); // Add three text boxes to show the values in this meter m.addText(148, 70, m.formatValue(value0, "2"), "Arial", 8, 0x6666ff, Chart.BottomRight ).setBackground(0, 0, -1); m.addText(193, 70, m.formatValue(value1, "2"), "Arial", 8, 0x33ff33, Chart.BottomRight ).setBackground(0, 0, -1); m.addText(238, 70, m.formatValue(value2, "2"), "Arial", 8, 0xff3333, Chart.BottomRight ).setBackground(0, 0, -1); // Output the chart String chart1URL = m.makeSession(request, "chart1"); %> <html> <body style="margin:5px 0px 0px 5px"> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> Multi-Pointer Horizontal Meter </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)%>'> </body> </html> |
import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class multihmeter implements DemoModule { //Name of demo program public String toString() { return "Multi-Pointer Horizontal 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 values to display on the meter double value0 = 30.99; double value1 = 45.35; double value2 = 77.64; // Create an LinearMeter object of size 250 x 75 pixels, using silver background with a 2 // pixel black 3D depressed border. LinearMeter m = new LinearMeter(250, 75, Chart.silverColor(), 0, -2); // Set the scale region top-left corner at (15, 25), with size of 220 x 20 pixels. The scale // labels are located on the top (implies horizontal meter) m.setMeter(15, 25, 220, 20, Chart.Top); // Set meter scale from 0 - 100, with a tick every 10 units m.setScale(0, 100, 10); // Set 0 - 50 as green (99ff99) zone, 50 - 80 as yellow (ffff66) zone, and 80 - 100 as red // (ffcccc) zone m.addZone(0, 50, 0x99ff99); m.addZone(50, 80, 0xffff66); m.addZone(80, 100, 0xffcccc); // Add deep red (000080), deep green (008000) and deep blue (800000) pointers to reflect the // values m.addPointer(value0, 0x000080); m.addPointer(value1, 0x008000); m.addPointer(value2, 0x800000); // Add a label at bottom-left (10, 68) using Arial Bold/8pt/red (c00000) m.addText(10, 68, "Temp C", "Arial Bold", 8, 0xc00000, Chart.BottomLeft); // Add three text boxes to show the values in this meter m.addText(148, 70, m.formatValue(value0, "2"), "Arial", 8, 0x6666ff, Chart.BottomRight ).setBackground(0, 0, -1); m.addText(193, 70, m.formatValue(value1, "2"), "Arial", 8, 0x33ff33, Chart.BottomRight ).setBackground(0, 0, -1); m.addText(238, 70, m.formatValue(value2, "2"), "Arial", 8, 0xff3333, Chart.BottomRight ).setBackground(0, 0, -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 multihmeter(); //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); } } |