/* "ManipulableMilhous.java" */
/* "Manipulable Richard M. Nixon" Applet */
/* <c> 1996 MNI Interactive (coded by Joe Rosen) */

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

/* begin: applet */

public class ManipulableMilhous extends java.applet.Applet implements Runnable {

 /* variables */

 /* font */
 Font         txt_Font;

 // slider btn
 Rectangle    sliderBtn_Rect;
 // groove slider btn rides in
 Rectangle    sliderGroove_Rect;
 // slider button state (dragging/not dragging)
 boolean      sliderBtn_boolean;

 /* offscreen anim/image buffer, "ManipulableMilhous" canvas */
 Image        offScreen_Image; 
 Graphics     offScreen_Graphics;

 /* images */
 Image        headBody_Image;      // head and body
 Image        headBodyPeace_Image; // head and body with peace signs
 Image[]      mouthFrown_Image;    // mouth frown (3 frames)
 Image[]      mouthSmile_Image;    // mouth smile (3 frames)

 /* "ManipulableMilhous" MediaTracker */
 MediaTracker manipulableMilhous_MediaTracker;

 /* animation thread */	
 Thread       animation_Thread;
 /* animation counters */
 int          mouth_anim_count; // mouth anim (3 frames)
 

 /* methods invoked by Java */

 /* "init()"
  * initialize the applet */
 public void init() {

  /* array index */
  int     aryIdx;
	
  /* 340W X 370H canvas */
  resize(340,370);
  
  /* text font */
  txt_Font = new Font("Helvetica", Font.PLAIN, 9);

  /* create offscreen anim/image buffer, "ManipulableMilhous" canvas */
  /* 340W X 370H */
  offScreen_Image = createImage(340,370);
  offScreen_Graphics = offScreen_Image.getGraphics();

  // init slider btn
  sliderBtn_Rect = new Rectangle(20,325,15,40);
  // init slider groove rect
  sliderGroove_Rect = new Rectangle(10,340,320,10);

  // init slider button state (dragging/not dragging)
  sliderBtn_boolean = false; // initially not dragging (false)

  /* retrieve head and body image (336W X 315H) */
  headBody_Image = getImage(getCodeBase(),"images/headbody.gif");
  /* retrieve head and body with peace signs image (336W X 315H) */
  headBodyPeace_Image = getImage(getCodeBase(),"images/headbody_peace.gif");
  /* init mouth frown and smile image array (3 frames each) */
  mouthFrown_Image = new Image[3];
  mouthSmile_Image = new Image[3];
  /* retrieve mouth images (frown = 61W X 29H/smile = 61W X 29H) */
  for (aryIdx = 0; aryIdx <= 2; aryIdx++) {
   mouthFrown_Image[aryIdx] =
    getImage(getCodeBase(),("images/mouthfrown_" + (aryIdx + 1) + ".gif"));
   mouthSmile_Image[aryIdx] =
    getImage(getCodeBase(),("images/mouthsmile_" + (aryIdx + 1) + ".gif"));
  }

  /* init "ManipulableMilhous" MediaTracker */
  manipulableMilhous_MediaTracker = new MediaTracker(this);
  /* load images into MediaTracker */
  manipulableMilhous_MediaTracker.addImage(headBody_Image,0);
  manipulableMilhous_MediaTracker.addImage(headBodyPeace_Image,1);
  manipulableMilhous_MediaTracker.addImage(mouthFrown_Image[0],2);
  manipulableMilhous_MediaTracker.addImage(mouthFrown_Image[1],3);
  manipulableMilhous_MediaTracker.addImage(mouthFrown_Image[2],4);
  manipulableMilhous_MediaTracker.addImage(mouthSmile_Image[0],5);
  manipulableMilhous_MediaTracker.addImage(mouthSmile_Image[1],6);
  manipulableMilhous_MediaTracker.addImage(mouthSmile_Image[2],7);

  /* animation counters */
  mouth_anim_count = 0; // mouth frown (3 frames, 0 = frame 1)

 } /* end method "init" */


 /* "start()"
  * called when the applet becomes visible on screen */
 public void start() {
		
  /* start numanim animation thread */ 
  animation_Thread = new Thread(this);
  animation_Thread.start();

 } /* end method "start" */


 /* "stop()"
  * called when the applet is no longer visible on screen */
 public void stop() {
		
  /* stop numanim animation thread */
  if (animation_Thread != null)
   animation_Thread.stop();
 
  animation_Thread = null; 

 } /* end method "stop" */


 /* "destroy()"
  * called just before the browser exits */
 public void destroy() {

  /* dispose offscreen anim/image buffer, "ManipulableMilhous" canvas */
  offScreen_Graphics.dispose(); offScreen_Graphics = null;

 } /* end method "destroy" */


 /* "run()"
  * called (repeatedly) by the Thread created in "start()" */
 public void run() {
		
  /* update animation thread */
  while (Thread.currentThread() == animation_Thread) {

   /* force repaint */
   repaint();

   /* inc/reset animation counters */
   // inc/reset mouth anim cnt (3 frames, 0 = frame 1)
   if (mouth_anim_count < 2)
    mouth_anim_count++;
   else
    mouth_anim_count = 0;

   /* begin: thread delay (125 milliseconds) */
   try {
    Thread.sleep(125);
   } catch (InterruptedException e) {
      break;
     } /* end: thread delay */

  } /* end "while (Thread.currentThread() == animation_Thread)" */

 } /* end method "run" */


 /* "update()"
  * update the screen */
 public void update(Graphics  g) {

  /* (intercepting "update" avoids background erase) */

  /* call "paint" */
  paint(g);

 } /* end method "update" */


 /* "paint()"
  * paint the screen */
 public void paint(Graphics  g) {

  /* fill entire buffer with white color */
  offScreen_Graphics.setColor(Color.white);
  offScreen_Graphics.fillRect(0,0,340,370);
  /* frame entire buffer with black color */
  offScreen_Graphics.setColor(Color.black);
  offScreen_Graphics.drawRect(0,0,339,369);

  /* wait for images to laod before drawing */
  if (manipulableMilhous_MediaTracker.checkAll(true) == true) {

   // draw slider groove
   offScreen_Graphics.setColor(Color.black);
   offScreen_Graphics.drawRect( sliderGroove_Rect.x,
                               sliderGroove_Rect.y,
                               sliderGroove_Rect.width,
                               sliderGroove_Rect.height );

   // draw slider button
   offScreen_Graphics.setColor(Color.white);
   offScreen_Graphics.fillRect( sliderBtn_Rect.x,
                                sliderBtn_Rect.y,
                                sliderBtn_Rect.width,
                                sliderBtn_Rect.height );
   offScreen_Graphics.setColor(Color.black);
   offScreen_Graphics.drawRect( sliderBtn_Rect.x,
                                sliderBtn_Rect.y,
                                sliderBtn_Rect.width,
                                sliderBtn_Rect.height );

   // draw head and body image
   if ( (sliderBtn_Rect.x + (sliderBtn_Rect.width / 2)) <= ((320 / 3) * 2) )
    offScreen_Graphics.drawImage(headBody_Image,2,2,this);
   else
    offScreen_Graphics.drawImage(headBodyPeace_Image,2,2,this);
   // draw mouth image
   if ( (sliderBtn_Rect.x + (sliderBtn_Rect.width / 2)) <= (320 / 3) ) 
    // draw frown @ 131 + 2,143 + 2
    offScreen_Graphics.drawImage(mouthFrown_Image[mouth_anim_count],133,145,this);
   else 
    // draw smile @ 135 + 2,143 + 2
    offScreen_Graphics.drawImage(mouthSmile_Image[mouth_anim_count],137,145,this);

  } // end "if (manipulableMilhous_MediaTracker.checkAll(true) == true)"

  /* begin: write text message, "Loading Images..." */
  else {
   /* set text string font */
   offScreen_Graphics.setFont(txt_Font);
   /* set text string color */
   offScreen_Graphics.setColor(Color.black);
   /* write/draw text message */
   offScreen_Graphics.drawString("Loading Images...",25,25);
  }
  /* end: write text message, "Loading Images..." */

  /* blast offscreen anim/image buffer to screen */
  g.drawImage(offScreen_Image,0,0,this);

 } /* end method "paint" */


 /* method "mouseDown()" */
 public boolean mouseDown(Event e, int x, int y)
 {

  /* wait for images to laod before drawing */
  if (manipulableMilhous_MediaTracker.checkAll(true) == true) {

   if ( ( (x > sliderBtn_Rect.x) &&
          (x < (sliderBtn_Rect.x + sliderBtn_Rect.width)) ) && 
        ( (y > sliderBtn_Rect.y) &&
          (y < (sliderBtn_Rect.y + sliderBtn_Rect.height)) )
   )
    if (sliderBtn_boolean == false)
     sliderBtn_boolean = true;

  } // end "if (manipulableMillhous_MediaTracker.checkAll(true) == true)"

  return true;

 } /* end method "mouseDown" */


 /* method "mouseUp()" */
 public boolean mouseUp(Event e, int x, int y)
 {

  /* wait for images to laod before drawing */
  if (manipulableMilhous_MediaTracker.checkAll(true) == true) {

   if (sliderBtn_boolean == true)
    sliderBtn_boolean = false;

  } // end "if (manipulableMilhous_MediaTracker.checkAll(true) == true)"

  return true;

 } /* end method "mouseUp" */


 /* method "mouseDrag()" */
 public boolean mouseDrag(Event e, int x, int y)
 {

  /* wait for images to laod before drawing */
  if (manipulableMilhous_MediaTracker.checkAll(true) == true) {

   if (sliderBtn_boolean == true) {
    if (
(x > (sliderGroove_Rect.x + (sliderBtn_Rect.width / 2))) &&
(x < ((sliderGroove_Rect.x + sliderGroove_Rect.width) - (sliderBtn_Rect.width / 2)))

    ) {
     sliderBtn_Rect.x = x - (sliderBtn_Rect.width / 2);
     /* force repaint */
     repaint();
    }
    else if (
(x < (sliderGroove_Rect.x + (sliderBtn_Rect.width / 2))) &&
(sliderBtn_Rect.x > sliderGroove_Rect.x)
    ) {
     sliderBtn_Rect.x = sliderGroove_Rect.x;
     /* force repaint */
     repaint();
    }
    else if (
(x > ((sliderGroove_Rect.x + sliderGroove_Rect.width) - (sliderBtn_Rect.width / 2))) &&
((sliderBtn_Rect.x + sliderBtn_Rect.width) <
 (sliderGroove_Rect.x + sliderGroove_Rect.width))
    ) {
     sliderBtn_Rect.x =
      (sliderGroove_Rect.x + sliderGroove_Rect.width) - sliderBtn_Rect.width;
     /* force repaint */
     repaint();
    }

   } // end "if (sliderBtn_boolean == true)"

  } // end "if (manipulableMilhous_MediaTracker.checkAll(true) == true)"

  return true;

 } /* end method "mouseDrag" */


} /* end class "ManipulableMilhous" */


/* end file "ManipulableMilhous.java */