// Richard Caceres, rcaceres {at} ucla.edu
// DMA 199
// $Id: ImageStrip.as,v 380.1 2008-01-30 18:11:35-08 - - $
// $Date: 2008-01-30 18:11:35-08 $

package {
	import flash.display.Sprite;
	import fl.transitions.*;
	import fl.transitions.easing.*;
	import flash.events.*;
	
	
	class ImageStrip extends Sprite {
		var images:Array;
		var focused_index:Number;
		var stageref;
		var focusTween;
		var imgspacing;
		
		public function ImageStrip (_images:Array, _stageref, _imgspacing) {
			
			// The constructor needs an Array of ImageIG3's 
			images = _images;
			stageref = _stageref
			imgspacing = _imgspacing;
			
			for (var i=0; i < images.length; ++i) {
			   addChild(images[i]);
			}
			
			arrangeImages();
			// Load all the images.
			//this.loadImages(); 
		}
		
		private function arrangeImages():void {
			trace ("initImages()");
			var xpos = 0;
			for (var i=0; i < images.length; ++i) {
				//trace ("xpos init:"+xpos);
				images[i].x = xpos;
				images[i].y = stageref.stageHeight *.5 - (images[i].obj_height * images[i].scaleY *.5);
				xpos += (Number(images[i].obj_width * images[i].scaleY) + imgspacing);
			}
		}
		
		public function handleResize (e:Event):void {
			for (var i=0; i < images.length; ++i){
				var img = images[i];
				if (stageref.stageHeight < img.obj_height) {
					img.scaleX = img.scaleY = stageref.stageHeight / img.obj_height;
				} else {
					img.scaleX = img.scaleY = 1;
				}
			}
			arrangeImages();
			focusImage(focused_index);
		}
		
		public function focusImage (indexnum):void {
			// This method will focus on a selected image at the point
			
			trace ("focusImage:"+indexnum);
			//trace ("xpos:"+images[indexnum].x);
			var newX = (-1 * (images[indexnum].x + (images[indexnum].obj_width * images[indexnum].scaleY * .5)));
			newX += (stageref.stageWidth * .5);
			focusTween = new Tween (this, "x", Regular.easeOut, this.x, newX, 1, true);
			
			focused_index = indexnum;
			
			// make sure every other image is dimmed
			for (var i=0; i < images.length; ++i) {
			   if (i != focused_index)
			   	  images[i].unfocus();
			   else 
			      images[i].focus();
			}
		}
	}
}