//----------------------------------------------------------------
// Mr. Potatoe Head applet
// as seen on the Internet at http://www.gumption.org/three/potato
//
// Written by Tony Sirna, sirna@cs.stanford.edu
//
// Copyright 1997 by BK Skinner, bk@gumption.org
// (except, of course, for the ImageCanvas stuff at the bottom)
//
//----------------------------------------------------------------

import java.awt.*;
import java.applet.*;

public class PotatoHead extends Applet implements Runnable  {



    //MediaTrackers are a pain in the butt. I think it actually works now.
    MediaTracker mt ;
    public Frame anchorFrame; //for setting cursor
    static boolean DEBUG = true;

    final int DONE = (MediaTracker.ABORTED | MediaTracker.ERRORED
                      | MediaTracker.COMPLETE);

    int kImgHeight; //Determined by the actual size of the image
    int kImgWidth;

    String hatNames[] = {"","Mickey.gif","Partyhat.gif","Armyhat.gif","Bikehelm.gif","Panama.gif","Sackhat.gif","Beret.gif"};
    String hairNames[] = {"","Longhair.gif","Redlong.gif", "Yellhair.gif","Grnhair.gif","Firehair.gif","Mohawk.gif","Redchin.gif","Shrthair.gif","Redshort.gif"};
    String facialNames[] = {"","Fullbrd.gif","Goatee.gif","Redfu.gif","Amish.gif","Moustach.gif"};
    String glassesNames[] = {"","Sunwrap.gif","Glaslenn.gif","Glasspop.gif","Redcool.gif"};
    String shirtNames[] = {"","Leather.gif","Gturtle.gif","Suit.gif"};
    String backgroundNames[] = {"","Sanfran.jpg","Kremlin.jpg"};

    Image hatImgs[] = new Image[hatNames.length];
    Image hairImgs[] = new Image[hairNames.length];
    Image facialImgs[] = new Image[facialNames.length];
    Image glassesImgs[] = new Image[glassesNames.length];
    Image shirtImgs[] = new Image[shirtNames.length];
    Image backgroundImgs[] = new Image[backgroundNames.length];
    Image basic,cigImg,gasMaskImg;

    //-1 beacuse of the none option. These are used in PrePaint
    int kNumHat = hatNames.length - 1;
    int kNumHair = hairNames.length - 1 ;
    int kNumFacial = facialNames.length - 1;
    int kNumGlasses = glassesNames.length - 1;
    int kNumShirt = shirtNames.length - 1;
    int kNumBack =backgroundNames.length - 1;


    //This is the image for offscreen double buffering.
    public Image offscreenImage;
    Graphics offscreenGraphics;

	int numImages=0; //total images in media tracker

    //This is called by the regular init method but this separates out
    //our code from the generic layout crap. Basically this
    //sets up all the images but they are loaded asynchronously in a different thread.
	void myInit()
	{

        Object anchorpoint = getParent();
        while (! (anchorpoint instanceof Frame))
            anchorpoint = ((Component)anchorpoint).getParent();
	    anchorFrame = (Frame)anchorpoint;

	    //Have to set up can here so it can be passed to mt
		can = new ImageCanvas();
        mt= new MediaTracker(can);

        basic = getImage(getCodeBase(),"images/"  + "Basic.gif");
        mt.addImage(basic,numImages++);
        cigImg= getImage(getCodeBase(),"images/"  + "Cigarett.gif");
        mt.addImage(cigImg,numImages++);
        gasMaskImg= getImage(getCodeBase(),"images/"  + "Gasmask.gif");
        mt.addImage(gasMaskImg,numImages++);


        //Start at 1 because first entry is for None
		for(int i=1;i<backgroundNames.length;i++)
		{
		 backgroundImgs[i]=getImage(getCodeBase(),"images/"  + backgroundNames[i]);
         mt.addImage(backgroundImgs[i],numImages++);
		}
		for(int i=1;i<shirtNames.length;i++)
		{
		 shirtImgs[i]=getImage(getCodeBase(),"images/"  + shirtNames[i]);
         mt.addImage(shirtImgs[i],numImages++);
		}
		for(int i=1;i<facialNames.length;i++)
		{
		 facialImgs[i]=getImage(getCodeBase(),"images/"  + facialNames[i]);
         mt.addImage(facialImgs[i],numImages++);
		}
		for(int i=1;i<hairNames.length;i++)
		{
		 hairImgs[i]=getImage(getCodeBase(),"images/"  + hairNames[i]);
         mt.addImage(hairImgs[i],numImages++);
		}
		for(int i=1;i<hatNames.length;i++)
		{
		 hatImgs[i]=getImage(getCodeBase(),"images/"  + hatNames[i]);
         mt.addImage(hatImgs[i],numImages++);
		}
		for(int i=1;i<glassesNames.length;i++)
		{
		 glassesImgs[i]=getImage(getCodeBase(),"images/"  + glassesNames[i]);
         mt.addImage(glassesImgs[i],numImages++);
		}

       // wait until image is loaded so we can get height and width appropriately
        while(-1 == (kImgHeight = basic.getHeight(this)))
        {
        }
        while(-1 == (kImgWidth = basic.getWidth(this)))
        {
        }

        if (DEBUG) System.out.println("Before offscreen images");

        //This is the offscreen Image for double buffering
        offscreenImage = createImage(kImgWidth,kImgHeight);
        offscreenGraphics = offscreenImage.getGraphics();

        if (DEBUG) System.out.println("After offscreen images");
	}

	//This is called after the layout crap in init()
	void myInit2()
    {
		can.setImage(offscreenImage,this);
		can.reshape(0,0,kImgHeight,kImgWidth);
		centerPanel.add("Center", can);

        //This starts the thread that loads the images.
        (new Thread(this)).start();

}

public boolean handleEvent(Event event) {
	return super.handleEvent(event);
}

//This deals with all the action events from the popups and check boxes
public boolean action(Event evt, Object arg)
{
   if (DEBUG) System.out.println("Start Action Event");
   statusBar.show();
   anchorFrame.setCursor(Frame.WAIT_CURSOR);

   if (evt.target == gasMask)
   {
	  gasMask_Action(evt); //disables/enables other controls
   }
   repaint();
   if (DEBUG) System.out.println("Finish Action Event");
   return true;

}

public void destroy()
{
   offscreenGraphics.dispose();
}

//Overloaded to reduce flicker
public void update(Graphics g)
{
   paint(g);
}

//This does all the processing to draw the images onto the offscreenImage.
//The order is important so that the objects draw in the right layers (ie hat on topof hair)
//After each image is specified we do a waitForID on its imageid (I apologize for the lame way of specifying the ID - this si sort of brittle in that if you move code hearor in myInit it could mess it up)
//The waitForID is intended to make things wait until the image is fully loaded but its doesnt always work that way.
public void prePaint()
{
   if (DEBUG) System.out.println("start prePaint");

   try
   {
        //Set the background to white because IE somehow sets it to pink
        offscreenGraphics.setColor(Color.white);
        //Clears the image
        offscreenGraphics.fillRect(0,0,kImgWidth,kImgHeight);

        if(Background.getSelectedIndex() > 0)
        {
            offscreenGraphics.drawImage(backgroundImgs[Background.getSelectedIndex()],0,0,this);
            mt.waitForID(2+Background.getSelectedIndex());
        }
        offscreenGraphics.drawImage(basic,0,0,this);
        if(Clothes.getSelectedIndex() > 0)
        {
            offscreenGraphics.drawImage(shirtImgs[Clothes.getSelectedIndex()],0,0,this);
            mt.waitForID(2+kNumBack + Clothes.getSelectedIndex());
        }
        if(Facial.getSelectedIndex() > 0)
        {
            offscreenGraphics.drawImage(facialImgs[Facial.getSelectedIndex()],0,0,this);
            mt.waitForID(2 + kNumBack + kNumShirt + Facial.getSelectedIndex());

        }
        if(Hair.getSelectedIndex() > 0)
        {
            offscreenGraphics.drawImage(hairImgs[Hair.getSelectedIndex()],0,0,this);
            mt.waitForID(2 + kNumBack + kNumShirt + kNumFacial+ Hair.getSelectedIndex());
        }
        if(gasMask.getState())
        {
            offscreenGraphics.drawImage(gasMaskImg,0,0,this);
            mt.waitForID(2);
        }
        if(Hat.getSelectedIndex() > 0)
        {
            offscreenGraphics.drawImage(hatImgs[Hat.getSelectedIndex()],0,0,this);
            mt.waitForID(2 + kNumBack + kNumShirt + kNumFacial+ kNumHair + Hat.getSelectedIndex());

        }
        if(Glasses.getSelectedIndex() > 0 && !gasMask.getState())
        {
            offscreenGraphics.drawImage(glassesImgs[Glasses.getSelectedIndex()],0,0,this);
            mt.waitForID(2 + kNumBack + kNumShirt + kNumFacial+ kNumHair + kNumHat +Glasses.getSelectedIndex());

        }
        if(Cigarette.getState() && !gasMask.getState())
        {
            offscreenGraphics.drawImage(cigImg,0,0,this);
            mt.waitForID(1);

        }

        }
        catch (Exception e)
        {
         if (DEBUG) System.out.println("In Prepaint " + e);
         e.printStackTrace();
        }

        if (DEBUG) System.out.println("Finish prepaint");

    }

    //Does the offscreen drawing and the repaints the canvas
    public void paint(Graphics g)
    {
        if (DEBUG) System.out.println("In paint");
        prePaint();
        can.repaint();
        if (DEBUG) System.out.println("Done with Paint");
    }

    //This is where the images get loaded in a different thread
    public void run() {
        if (DEBUG) System.out.println("In run");

        try {
          //This loads the basic image and then does a repaint.
          mt.waitForID(0);
          repaint();

          for (int i=1; i<numImages; i++) {
                if (DEBUG) System.out.println("Before mt.waitForID run " + i);
                mt.waitForID(i);
                if (DEBUG) System.out.println("Afteer mt.waitForID run");
          }
        } catch (Exception e) {
             e.printStackTrace();
        }
        if (DEBUG) System.out.println("Finished run");
    }

//Stuff in between comments is generated with SYmantec Visual Cafe. Sort of cool but only goes so far.
	public void init() {
		super.init();
		myInit();
		//{{INIT_CONTROLS
		setLayout(new BorderLayout(0,0));
		addNotify();
		resize(600,550);
		setBackground(new Color(12632256));
		westPanel = new java.awt.Panel();
		westPanel.setLayout(new GridLayout(20,1,15,5));
		westPanel.reshape(0,21,86,529);
		add("West", westPanel);
		labelHat = new java.awt.Label("Hat");
		labelHat.reshape(0,0,86,21);
		westPanel.add(labelHat);
		Hat = new java.awt.Choice();
		Hat.addItem("None");
		Hat.addItem("Mickey Mouse");
		Hat.addItem("Party");
		Hat.addItem("Army Hat");
		Hat.addItem("Bike Helmet");
		Hat.addItem("Panama");
		Hat.addItem("Sack Hat");
		Hat.addItem("Beret");
		Hat.reshape(0,26,86,21);
		westPanel.add(Hat);
		labelHair = new java.awt.Label("Hair");
		labelHair.reshape(0,52,86,21);
		westPanel.add(labelHair);
		Hair = new java.awt.Choice();
		Hair.addItem("None");
		Hair.addItem("Long");
		Hair.addItem("Long Red");
		Hair.addItem("Long Yellow");
		Hair.addItem("Long Green");
		Hair.addItem("Long Fire");
		Hair.addItem("Red Mohawk");
		Hair.addItem("Chin-Length Red");
		Hair.addItem("Short");
		Hair.addItem("Short Red");
		Hair.reshape(0,78,86,21);
		westPanel.add(Hair);
		labelGlasses = new java.awt.Label("Sun Glasses");
		labelGlasses.reshape(0,104,86,21);
		westPanel.add(labelGlasses);
		Glasses = new java.awt.Choice();
		Glasses.addItem("None");
		Glasses.addItem("Wrap- Around");
		Glasses.addItem("Lennon");
		Glasses.addItem("Lennon (Open)");
		Glasses.addItem("Red Cool");
		Glasses.reshape(0,130,86,21);
		westPanel.add(Glasses);
		labelFacial = new java.awt.Label("Facial Hair");
		labelFacial.reshape(0,156,86,21);
		westPanel.add(labelFacial);
		Facial = new java.awt.Choice();
		Facial.addItem("None");
		Facial.addItem("Full Beard");
		Facial.addItem("Goatee");
		Facial.addItem("FuManChu");
		Facial.addItem("Amish");
		Facial.addItem("Moustache");
		Facial.reshape(0,182,86,21);
		westPanel.add(Facial);
		labelClothes = new java.awt.Label("Clothes");
		labelClothes.reshape(0,208,86,21);
		westPanel.add(labelClothes);
		Clothes = new java.awt.Choice();
		Clothes.addItem("None");
		Clothes.addItem("Leather Jacket");
		Clothes.addItem("Turtle Neck");
		Clothes.addItem("Suit &Tie");
		Clothes.reshape(0,234,86,21);
		westPanel.add(Clothes);
		labelBack = new java.awt.Label("Background");
		labelBack.reshape(0,260,86,21);
		westPanel.add(labelBack);
		Background = new java.awt.Choice();
		Background.addItem("None");
		Background.addItem("San Francisco");
		Background.addItem("Kremlin");
		Background.reshape(0,286,86,21);
		westPanel.add(Background);
		Cigarette = new java.awt.Checkbox("Cigarette");
		Cigarette.reshape(0,312,86,21);
		westPanel.add(Cigarette);
		gasMask = new java.awt.Checkbox("Gas Mask");
		gasMask.reshape(0,338,86,21);
		westPanel.add(gasMask);
		NorthPanel = new java.awt.Panel();
		NorthPanel.setLayout(new BorderLayout(0,0));
		NorthPanel.reshape(0,0,600,21);
		add("North", NorthPanel);
		statusBar = new java.awt.Label("Please Wait while image is downloading!",Label.CENTER);
		statusBar.reshape(0,0,600,21);
		statusBar.setForeground(new Color(0));
		NorthPanel.add("Center", statusBar);
		centerPanel = new java.awt.Panel();
		centerPanel.setLayout(new BorderLayout(0,0));
		centerPanel.reshape(86,21,514,529);
		add("Center", centerPanel);
		//}}
		myInit2();
	}

	void gasMask_Action(Event event) {

		//{{CONNECTION
		// Disable the Checkbox on condition... Is Checkbox On?
		Cigarette.enable(! gasMask.getState());
		//}}

		//{{CONNECTION
		// Disable the Choice on condition... Is Checkbox On?
		Glasses.enable(! gasMask.getState());
		//}}

		//{{CONNECTION
		// Enable the Choice on condition... Is Checkbox Off?
		Glasses.enable(!gasMask.getState());
		//}}

		//{{CONNECTION
		// Enable the Checkbox on condition... Is Checkbox Off?
		Cigarette.enable(!gasMask.getState());
		//}}
	}


	//{{DECLARE_CONTROLS
	java.awt.Panel westPanel;
	java.awt.Label labelHat;
	java.awt.Choice Hat;
	java.awt.Label labelHair;
	java.awt.Choice Hair;
	java.awt.Label labelGlasses;
	java.awt.Choice Glasses;
	java.awt.Label labelFacial;
	java.awt.Choice Facial;
	java.awt.Label labelClothes;
	java.awt.Choice Clothes;
	java.awt.Label labelBack;
	java.awt.Choice Background;
	java.awt.Checkbox Cigarette;
	java.awt.Checkbox gasMask;
	java.awt.Panel NorthPanel;
	java.awt.Label statusBar;
	java.awt.Panel centerPanel;
	//}}
	ImageCanvas can;

}



//-----------------------------------------------------------
// I got this from a java example put out by sun. 
// I obviously added the potatohead reference.

class ImageCanvas extends Canvas {
    Image image;
    PotatoHead potato;
    boolean clear;

    public void setImage(Image image,PotatoHead p) {
        this.image = image;
        this.potato = p;
        clear = true;
        repaint();
    }

    public void update(Graphics g) {
        paint(g);
    }

    public void paint(Graphics g) {
        if (image == null) {
            //g.setColor(Color.blue);
            //g.fillRect(0, 0, size().width, size().height);
        } else {
            if (clear) {
                g.clearRect(0, 0, size().width, size().height);
                clear = false;
            }
            int w = image.getWidth(this);
            int h = image.getHeight(this);
            if (w >size().width) w=size().width;
            if (h >size().height) w=size().width;

            if (w >= 0 && h >= 0) {
                g.drawImage(image, (size().width-w)/2,
                    (size().height-h)/2, this);
            }
        }
        potato.statusBar.hide();
        potato.anchorFrame.setCursor(Frame.DEFAULT_CURSOR);
    }
}