/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package pam_06_01;

import javax.microedition.lcdui.Display;
import javax.microedition.midlet.*;

/**
 * @author Krystian
 */
public class Midlet extends MIDlet {

    public void startApp() {
        Display.getDisplay(this).setCurrent(new MyCanvas(this));
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
}



/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package pam_06_02;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;

/**
 *
 * @author Krystian
 */
public class MyCanvas extends Canvas implements CommandListener {
    Midlet midlet;
    int xPos;
    int yPos;
    int dx = 1, dy = 1;
    int motionX = 1, motionY = 1;

    public MyCanvas(Midlet _midlet)
    {
        midlet = _midlet;
        addCommand(new Command("Koniec", Command.EXIT, 0));
        setCommandListener(this);

        xPos = getWidth()/2;
        yPos = getWidth()/2;
    }

    protected void paint(Graphics g) {
        g.setColor(0xffffff);
        int screenWidth = getWidth();
        int screenHeight = getHeight();

        xPos += dx * motionX;
        yPos += dy * motionY;

        if (xPos <= 0)
            motionX *= -1;
        if (xPos >= screenWidth - 32)
            motionX *= -1;
        if (yPos <= 0)
            motionY *= -1;
        if (yPos >= screenHeight - 32)
            motionY *= -1;

        g.fillRect(0, 0, screenWidth, screenHeight);

        if (motionX == 1 && motionY == 1)
            g.setColor(255, 255, 0);
        else if (motionX == -1 && motionY == -1)
            g.setColor(255, 0, 0);
        else if (motionY == 1 && motionX == -1)
            g.setColor(0, 255, 0);
        else if (motionY == -1 && motionX == 1)
            g.setColor(0, 0, 255);
        else
            g.setColor(0, 0, 0);

        g.fillRect(xPos, yPos, 32, 32);

        repaint();
        serviceRepaints();
    }

    public void commandAction(Command c, Displayable d) {
        switch (c.getCommandType()) {
            case Command.EXIT:
                midlet.destroyApp(false);
                midlet.notifyDestroyed();
                break;
        }
    }
}