// Written by Nicholas D. Exner, Exner Enterprises C.2000, May 2000 
// Class DrawPoly uses code references to other classes such as
// ManagePanel.class and Box.class that are the intellectual property of
// Nicholas Exner.  These classes have been included here with the 
// consent of the author.

//<APPLET CODE="MLMToothPick.class" WIDTH=750 HEIGHT=500></APPLET>
//Adapted from the code for the applet "ToothPick.java"
//3/3/01

import java.applet.*;
import java.awt.*;
import java.util.*;
import java.awt.event.*;
import java.awt.image.*; 

public class MLMToothPick extends Applet
{
	Graphics h;
	Image offscreenImg;
	Image sign;
	Pick p;
	Point initpt1;
	Point initpt2;
	boolean pickInit;
	int currentX, currentY;
	
	public void init()
	{
		Pick.loadImages((Applet)this,(ImageObserver)this);
		offscreenImg = createImage(this.size().width,this.size().height);
		h = offscreenImg.getGraphics();
		sign = getImage(getCodeBase(),"sign.gif");
		add(new Button("Start Over"));
		initpt1 = new Point(52,51);
		p = new Pick(-100,-100);
		pickInit=false;
		initpt2 = new Point(initpt1.x + p.h+1, initpt1.y + p.w+1);
		
		setBackground(new Color(200,196,196));
		repaint();
	}
	
	public void paint(Graphics g)
	{
		h.setColor(new Color(200,196,196));
		h.fillRect(0,0,750,500);
		h.drawImage(sign,0,0,this);
		h.setColor(new Color(0,0,0));
		h.setColor(new Color(112,88,63));
		h.setFont(new Font("TimesRoman",Font.BOLD,18));
		h.drawString(""+p.numpicks+"",70,77);
		p.show(h);
		g.drawImage(offscreenImg,0,0,this);
	}
	
	public boolean mouseDown(Event evt, int x, int y)
	{
		currentX = x;
		currentY = y;
		p.mouseDown(x,y);
		if(p.getLast().select == false)
		{
			if(x > 158 && x < 239 && y > 44 && y < 110)
			{
				if(pickInit)
				{
					p.add(new Pick(x-(p.h/2),y-(p.w/2)));
				}
				else
				{
					p.setX(x-(p.h/2));
					p.setY(y-(p.w/2));
					pickInit = true;
					p.numpicks++;
				}
			}
		}
		
		p.mouseDown(x,y);
		
		repaint();
		return true;
	}
	
	public boolean mouseUp(Event evt, int x, int y)
	{
		currentX = x;
		currentY = y;
		p.mouseUp();
		repaint();
		return true;
	}
	
	public boolean mouseDrag(Event evt, int x, int y)
	{
		currentX = x;
		currentY = y;
		p.mouseDrag(x,y);
		repaint();
		return true;
	}
	
	public boolean action(Event evt, Object arg)
	{
		if (evt.target instanceof Button)
		{
			p.reset(initpt1.x,initpt1.y);
			pickInit = false;
			p.setX(-2*p.h);
			p.setY(-2*p.w);
		}
		repaint();
		return true;
	}
	
	public boolean keyDown(Event evt, int key)
	{
		if (key == 'r' || key == 'R')
			if (p.getLast() != null)
				p.getLast().rotate(currentX,currentY);
		repaint();
		return true;
	}
	
	public void update(Graphics g)
	{
		paint(g);
	}
	
} // END CLASS ToothPick

////////////////////////////////////////////////////////////
/////////////////// *****CLASS Pick***** ///////////////////
////////////////////////////////////////////////////////////

class Pick
{
	int x,
	    y,
	    w,
	    h,
	    pointOnImageX,
	    pointOnImageY;

	Pick next;
	Image objImg, origImg;
	boolean select;
	static Image pickv, pickh;
	static ImageObserver iobp;
	static Pick lastPick = null;
	static int numpicks = 0;

	public Pick(int x, int y)
	{
		this.x = x;
		this.y = y;
		pointOnImageX = x;
		pointOnImageY = y;
		this.next = null;
		w=8;
		h=68;
		lastPick = this;
		select = false;
		System.out.print("X "+x+" Y1: "+y);
		objImg = pickh;
		origImg = objImg;
	}
	
	public Pick(int x, int y, Pick next)
	{
		this(x,y);
		add(next);
	}
	
	public void add(Pick next)
	{
		System.out.println("added");
		if (this.next == null)
		{
			this.next = next;
			numpicks++;
		}
		else 
			this.next.add(next);
	}
	
	public static void loadImages(Applet parent,ImageObserver iob)
	{
		iobp = iob;
		MediaTracker tracker = new MediaTracker(parent);
		pickv = parent.getImage(parent.getCodeBase(),"pickv.gif");
		pickh = parent.getImage(parent.getCodeBase(),"pickh.gif");
		tracker.addImage(pickv,0);
		tracker.addImage(pickh,1);
		tracker.checkAll(true);
	}
	
	public void show (Graphics g)
	{
		if (objImg != null)
			g.drawImage(objImg,x,y,iobp);
		if (next != null)
			next.show(g);
	}
	
	public void setX(int x)
	{
		this.x = x;
	}
	
	public void setY(int y)
	{
		this.y = y;
	}
	
	public int getX()
	{
		return x;
	}
	
	public int getY()
	{
		return y;
	}
	
	public Pick getLast()
	{
		return lastPick;
	}
	
	public void rotate(int curX, int curY)
	{
		if (objImg == pickv)
		{
			objImg = pickh;
			setX(curX-h/2);
			setY(curY-w/2);
//			setX(curX + pointOnImageX);
//			setY(curY);
		}
		else
		{
			objImg = pickv;
			setX(curX-w/2);
			setY(curY-h/2);
//			setX(curX + pointOnImageY);
//			setY(curY + pointOnImageX);

		}
		pointOnImageX = x-curX;
		pointOnImageY = y-curY;
	}
	
	public void mouseDown(int x1, int y1)
	{
		select = false;
		if (objImg == pickv)
			if (x1 >= x && x1 <= x+w) 
				if (y1 >= y && y1 <=y+h)
					select(x1,y1);
	
		if (objImg == pickh)
			if (x1 >= x && x1 <= x+h)
				if (y1 >= y && y1 <=y+w)
					select(x1,y1);
	
		if (!select && next != null)
			next.mouseDown(x1,y1);
	}
	
	public void mouseDrag(int x, int y)
	{
	 	if (select)
		{
			this.x=(x+pointOnImageX);
			this.y=(y+pointOnImageY);
		}
		else
			if (next != null)
				next.mouseDrag(x,y);
	}
	
	public void select(int x1,int y1)
	{
		pointOnImageX = x-x1;
		pointOnImageY = y-y1;
		select = true;
		lastPick = this;
	}
	
	public void mouseUp()
	{
		select = false;
		if (next != null)
			next.mouseUp();
	}
	
	public void reset(int x,int y)
	{
		objImg = origImg;
	
//		if (next != null)
//			next.reset();
		next=null;
		numpicks=0;
		this.x = x;
		this.y = y;
	}
	
} // END CLASS Pick