Week 3 Assignments

Animation

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

public class newCanvas extends MIDlet {
    
    private boolean boolMotion=true;    
    private int iX=10,iY=60;    
    
    Display mDisplay;
    
    public void destroyApp(boolean unconditional){}
    
    public void pauseApp() {}
    
    public void startApp() {
        mDisplay = Display.getDisplay(this);
        final MyCanvas can = new MyCanvas();
        mDisplay.setCurrent(can);
    }
    
}

import java.util.Random;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;

public class MyCanvas extends Canvas implements Runnable {
    int count, counter=0;
    int h, w; 
 private Random rand; 
    
    //constructor - initialize variables
    public MyCanvas() {
     //get the height of the canvas
     h = getHeight(); 
     w = getWidth();
     
     //set text colour to white 
        Thread th=new Thread(this);
        th.start();
    }
    
    //drawing on the canvas
    public void paint(Graphics g) {
     //paint the background
     g.setColor(0,0,0);
     g.fillRoundRect(0, 0, w, h, 0, 0); 
     
     //paint the block
        g.setColor(43,128,255);
        g.fillRoundRect(0,count,40,40,40,40);
        g.setColor(207,128,255);
        g.fillRoundRect(count,0,40,40,40,40);
        g.setColor(43,128,255);
        g.fillRoundRect(190,count,40,40,40,40);
        g.setColor(207,128,255);
        g.fillRoundRect(count,190,40,40,40,40);
    }
    
    //the main loop
    public void run() {
        while(true) {
            count++;
            // my bootleg delay
            while(counter < 1000000){
             counter++;
            }
            repaint();
            count %= h;
        }        
    }    
}

Form

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.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;

public class CanvasMenu extends MIDlet implements CommandListener {

    // The MIDlet's Display object
    private Display display;
        
    // Flag indicating first call of startApp
    protected boolean started;
    
    // Our Exit command
    private Command exitCommand;
    
    protected void startApp() {
     
     //for debugging 
     System.out.println("I'm starting!!! - " + started); 
     
       if (!started) {
            display = Display.getDisplay(this);
            
            Canvas canvas = new KeyFinderCanvas();   
            
            exitCommand = new Command("Exit", Command.EXIT, 0);
            canvas.addCommand(exitCommand);
            canvas.setCommandListener(this);
            display.setCurrent(canvas);
            started = true;
            System.out.println("Application Started! Yay! - " + started);
        }
    }

    protected void pauseApp() {
    }

    protected void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            // Exit. No need to call destroyApp
            // because it is empty.
            notifyDestroyed();
        }
    }     
}



//KeyFinderCanvas is a separate canvas which displays keys and codes
class KeyFinderCanvas extends Canvas {
     
    static int[] keyCodes = {KEY_NUM1, KEY_NUM2, KEY_NUM3, KEY_NUM4, KEY_NUM5, KEY_NUM6, KEY_NUM7, KEY_NUM8, KEY_NUM9};
    
    int lastKeyCode = 0;
    
    int lastX;
    
    int lastY;

    int background = 0x000000;
    int keyColor = 0xffffff;
    
    int width = getWidth();
    int height = getHeight();
 
   
    protected void keyPressed(int keyCode) {
        lastKeyCode = keyCode;
       repaint();
    }
        
    protected void keyRepeated(int keyCode) {
        lastKeyCode = keyCode;
       repaint();
    }
        
    protected void keyReleased(int keyCode) {
        lastKeyCode = 0;
       // repaint();
    }    
      
    
    protected void paint(Graphics g) {
  
      //g.setColor(0xAEB5CE);
       g.setColor(background, 120, 240);
        //this is not smart, instead of doing this - what would you do?
        // I would call "get width" and "get height" once, not on each paint
        g.fillRect(0, 0, width, height);

        g.setColor(0xffffff);
        Font font = g.getFont();
        font = Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, Font.SIZE_LARGE);
        g.setFont(font);
        g.drawString("1", width/3-10, height/3-20, Graphics.TOP | Graphics.LEFT);        
        g.drawString("2", width/3+width/3-10, height/3-20, Graphics.TOP | Graphics.LEFT); 
        g.drawString("3", width-10, height/3-20, Graphics.TOP | Graphics.LEFT); 
        g.drawString("4", width/3-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT);        
        g.drawString("5", width/3+width/3-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT); 
        g.drawString("6", width-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT); 
        g.drawString("7", width/3-10, height-20, Graphics.TOP | Graphics.LEFT);        
        g.drawString("8", width/3+width/3-10, height-20, Graphics.TOP | Graphics.LEFT); 
        g.drawString("9", width-10, height-20, Graphics.TOP | Graphics.LEFT); 
        
        
        if (lastKeyCode == 0) {
            g.setColor(background, 120, 240);
        }
        
        if (lastKeyCode != 0) {
            for (int i = 0; i                 if (lastKeyCode == keyCodes[i]) {
                    break;
                }
            }   
             
            
            // PRESS 1
            if (lastKeyCode == KEY_NUM1){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
                g.fillRect(0, 0, width/3, height/3);
                g.setColor(0xffffff);        
                g.drawString("1", width/3-10, height/3-20, Graphics.TOP | Graphics.LEFT);
            }
            
            // PRESS 2
            if (lastKeyCode == KEY_NUM2){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
                g.fillRect(width/3, 0, width/3, height/3);    
                g.setColor(0xffffff);                
                g.drawString("2", width/3+width/3-10, height/3-20, Graphics.TOP | Graphics.LEFT); 
            }
            
            // PRESS 3
            if (lastKeyCode == KEY_NUM3){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
                g.fillRect(width/3+width/3, 0, width/3, height/3);
                g.setColor(0xffffff);
                g.drawString("3", width-10, height/3-20, Graphics.TOP | Graphics.LEFT); 
            } 
        
         // PRESS 4
         if (lastKeyCode == KEY_NUM4){ 
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
                g.fillRect(0, height/3, width/3, height/3);        
                g.setColor(0xffffff);
                g.drawString("4", width/3-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT);        
          }
         
         // PRESS 5
         if (lastKeyCode == KEY_NUM5){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
          g.fillRect(width/3, height/3, width/3, height/3);
                g.setColor(0xffffff);
                g.drawString("5", width/3+width/3-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT); 
         }
         
         // PRESS 6
         if (lastKeyCode == KEY_NUM6){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
          g.fillRect(width/3+width/3, height/3, width/3, height/3);
                g.setColor(0xffffff);
                g.drawString("6", width-10, height/3+height/3-20, Graphics.TOP | Graphics.LEFT); 
         }
         
         // PRESS 7
         if (lastKeyCode == KEY_NUM7){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
          g.fillRect(0, height/3+height/3, width/3, height/3);
                g.setColor(0xffffff);
                g.drawString("7", width/3-10, height-20, Graphics.TOP | Graphics.LEFT);        
      }
         
      // PRESS 8
      if (lastKeyCode == KEY_NUM8){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
          g.fillRect(width/3, height/3+height/3, width/3, height/3);   
                g.setColor(0xffffff);
                g.drawString("8", width/3+width/3-10, height-20, Graphics.TOP | Graphics.LEFT); 
      }
      
      // PRESS 9
      if (lastKeyCode == KEY_NUM9){
             keyColor = keyColor * -25;
                if (keyColor <= 0)
                {
                 keyColor=keyColor * -1 + 100;
                }     
                g.setColor(keyColor);
          g.fillRect(width/3+width/3, height/3+height/3, width/3, height/3);
                g.setColor(0xffffff);
                g.drawString("9", width-10, height-20, Graphics.TOP | Graphics.LEFT); 
      }
        } 
    }
}