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How to draw Text on a Canvas |
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This example shows how to use Canvas class to draw some texts with specific
Font characteristics in MIDP.
/*
J2ME: The Complete Reference
James Keogh
Publisher: McGraw-Hill
ISBN 0072227109
*/
//jad file (please verify the jar size)
/*
MIDlet-Name: TextExample
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: TextExample.jar
MIDlet-1: TextExample, , TextExample
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class TextExampleMIDlet extends MIDlet{
private Display display;
private MyCanvas canvas;
public TextExampleMIDlet ()
{
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 TextExample textExample;
public MyCanvas (TextExample textExample)
{
this. textExample = textExample;
exit = new Command("Exit", Command.EXIT, 1);
addCommand(exit);
setCommandListener(this);
}
protected void paint(Graphics graphics)
{
graphics.setColor(255,255,255);
graphics.fillRect(0, 0, getWidth(), getHeight());
graphics.setColor(255,0,0);
graphics.setFont(Font.getFont(Font.FACE_PROPORTIONAL,
Font.STYLE_BOLD, Font.SIZE_SMALL));
graphics.drawString("Profound statement.", 50, 10, Graphics.HCENTER|Graphics.BASELINE);
}
public void commandAction(Command command, Displayable displayable)
{
if (command == exit)
{
textExample.exitMIDlet();
}
}
}
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