Graphics: drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) : Graphics « javax.microedition.lcdui « Java by API

1. Java by API
2. javax.microedition.lcdui
3. Graphics

Graphics: drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)

 

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;

public class J2MEArcExample extends MIDlet {
  private Display display;

  private MyCanvas canvas;

  public J2MEArcExample() {
    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 J2MEArcExample arcExample;

  public MyCanvas(J2MEArcExample arcExample) {
    this.arcExample = arcExample;
    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.drawArc(0, 0, getWidth(), getHeight(), 180, 180);
  }

  public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
      arcExample.exitMIDlet();
    }
  }
}

   
  

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