import java.applet.Applet;  // for Applet
import java.awt.Graphics;   // for Graphics
import java.awt.Color;      // for Color.red
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;  // for ImageIcon


public class MovePuzzle extends JApplet {

	int appletW=300, appletH=350;
	int pieceW, pieceH;
	int sideX=4, sideY=4, backType;
	int puzzle[][] = new int[sideY][sideX];
	int px=10, py=20;
	int left=0, top=0;
	boolean showAll = false, easyMode=false;
	Image bgBuffer, img;
	Graphics bgGC;
	int shiftX, shiftY, mx, my, prevX, prevY, dragX, dragY, div=4;
		
	//This method is called when the applet becomes visible
	public void init()
	{
		img = new ImageIcon(JigsawPuzzle.class.getResource("lena.jpg")).getImage();
		//img = new ImageIcon("poker.png").getImage();
		//img = new ImageIcon("fruit.jpg").getImage();
		img = ImageEffect.alphaButtonize(img, sideY, sideX, 2);
        appletW = img.getWidth(null);
        appletH = img.getHeight(null);
        pieceW = appletW / sideX;
        pieceH = appletH / sideY;
		setSize(appletW, appletH);
		shiftX = (appletW % pieceW) / 2;
		shiftY = (appletH % pieceH) / 2;
		bgBuffer = createImage(appletW, appletH);
		bgGC = bgBuffer.getGraphics();
		
		addMouseListener(
				new MouseAdapter()
				{ //public void mouseClicked(MouseEvent e)
				  //public void mouseReleased(MouseEvent e)	
				  public void mousePressed(MouseEvent e)	
				  { int button = e.getButton();
					if ( button==MouseEvent.BUTTON1 )
					{
						mx = e.getX();
						my = e.getY();
						left = (mx-shiftX) / pieceW;
						top  = (my-shiftY) / pieceH;
						
					}
					else if ( button==MouseEvent.BUTTON2 )
					{
						System.out.println("Mouse's middle button pressed!");
					}
					else if ( button==MouseEvent.BUTTON3 )
					{
						//System.out.println("Mouse's right button pressed!");
						showAll = true;
					}
					repaint(); // 璶―