/*
J2ME: The Complete Reference
James Keogh
Publisher: McGraw-Hill
ISBN 0072227109
*/
//jad file (please verify the jar size)
/*
MIDlet-Name: TranslateCoordinates
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: TranslateCoordinates.jar
MIDlet-1: TranslateCoordinates, , TranslateCoordinates
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class TranslateCoordinates extends MIDlet
{
private Display display;
private MyCanvas canvas;
public TranslateCoordinates ()
{
display = Display.getDisplay(this);
canvas = new MyCanvas (this);
}
protected void startApp()
{
display.setCurrent( canvas );
}
protected void pauseApp()
{
}
protected void destroyApp( boolean unconditional )
{
}
public void exitMIDlet()
{
destroyApp(true);
notifyDestroyed();
}
class MyCanvas extends Canvas implements CommandListener
{
private Command exit;
private TranslateCoordinates translateCoordinates;
private Image image = null;
public MyCanvas(TranslateCoordinates translateCoordinates)
{
this. translateCoordinates = translateCoordinates;
exit = new Command("Exit", Command.EXIT, 1);
addCommand(exit);
setCommandListener(this);
try
{
image = Image.createImage(70, 70);
Graphics graphics = image.getGraphics();
graphics.setColor(255,0,0);
graphics.fillArc(10, 10, 60, 50, 180, 180);
}
catch (Exception error)
{
Alert alert = new Alert("Failure",
"Creating Image", null, null);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert);
}
}
protected void paint(Graphics graphics)
{
if (image != null)
{
graphics.setColor(255,255,255);
graphics.fillRect(0, 0, getWidth(), getHeight());
graphics.translate(45, 45);
graphics.drawImage(image, 0, 0,
Graphics.VCENTER | Graphics.HCENTER); }
}
public void commandAction(Command command, Displayable display)
{
if (command == exit)
{
translateCoordinates.exitMIDlet();
}
}
}
}