// as/navigation.as

function initNavigation(name, stat){
	trace('InitNavigation: ' + arguments);
	var w = stat[0]
	var h = stat[1]
	var imageWidth = 600;
	var prop = w/imageWidth
	var imageHeight = (h/prop)
	_root.zoomed.cont.stat = stat
	toggleCurrent( name, [imageWidth,imageHeight] );		// load main image
	loadNavigator( name, [imageWidth/5, imageHeight/5] )	// load navigator
	_root.toLoad = 2
	preloader._visible = true
}

/* desaturate current image */
function toggleCurrent( next, stat ){
	_root.zoomed.cont.zoom.removeMovieClip();
	var current = _root.zoomed.cont.index;
	var clip = _root.zoomed.cont['img_' + current]
	if(clip == undefined){
		resizeZoomed( next, stat );
		return Void;
	}
	clip.onEnterFrame = function(){
		if(this._alpha < 0){
			delete this.onEnterFrame
			this.removeMovieClip()
			resizeZoomed( next, stat );
		}
		this._alpha -= 5;
	}
}

/** resize the zoomed clip **/
function resizeZoomed( next, stat ){
	trace('resizeZoomed: ' + arguments)
	var cont:MovieClip = _root.zoomed.cont;	
	var sfondo:MovieClip = _root.zoomed.sfondo;
	sfondo.tw = contentWidth + 20
	sfondo.th = contentHeight + 20
	cont.onEnterFrame = function(){
		var dx = (sfondo.tw - sfondo.bianco._width)/5
		var dy = (sfondo.th - sfondo.bianco._height)/5
		sfondo.bianco._width  += dx
		sfondo.bianco._height += dy
		sfondo.sh1._width = sfondo.bianco._width + 1
		sfondo.sh2._width = sfondo.bianco._width + 2
		sfondo.sh3._width = sfondo.bianco._width + 2
		sfondo.sh1._height = sfondo.bianco._height + 1
		sfondo.sh2._height = sfondo.bianco._height + 2
		sfondo.sh3._height = sfondo.bianco._height + 2
		if(Math.abs(dx) < .1 and Math.abs(dy) < .1){
			sfondo.bianco._width = sfondo.tw
			sfondo.bianco._height = sfondo.th
			delete this.onEnterFrame;
			loadNextImage(next, stat)
		}
	}
}

/** loadNext Image **/
function loadNextImage(image, stat){
	trace('loadNextImage')
	var str:String = basePath + "?command=thumb&width=" + stat[0] + "&image=" + image
	var zoom:MovieClip = _root.zoomed
	zoom.cont.index += 1
	zoom.cont.createEmptyMovieClip('img_' + zoom.cont.index, zoom.cont.index);
	zoom.cont['img_' + zoom.cont.index].loadMovie(str);
	zoom.cont['img_' + zoom.cont.index]._alpha = 0;
	zoom.cont.image = image
	zoom.cont._mc   = zoom.cont['img_' + zoom.cont.index]
	zoom.cont.onEnterFrame = function(){
		if(this._mc.getBytesLoaded() >= this._mc.getBytesTotal() and this._mc.getBytesTotal() > 4){
			this._parent.mask._width = contentWidth
			this._parent.mask._height = contentHeight
			if(this._mc._alpha > 100){
				delete this.onEnterFrame
				_root.toLoad -= 1
				if(_root.toLoad <= 0){
					preloader._visible = false
				}
				resizeMover(this._mc._width, this._mc._height, contentWidth, contentHeight);
			}			
			this._mc._alpha += 5
		}
	}
}


/** loadNavigator clip **/
function loadNavigator(image, stat){
	var mc:MovieClip = _root.nav;
	mc._visible = false
	mc.cont.loadMovie(basePath + "?command=thumb&width=" + stat[0] + "&height=" + stat[1] + "&image=" + image);
	mc.targetWidth = stat[0] + 10
	mc.targetHeight = stat[1] + 10
	mc._visible = false;
	mc.mover._visible = false
	mc.sfondo_thumb.t_bianco._width = 0;
	mc.sfondo_thumb.t_bianco._height = 0;
	mc.cont._alpha = 0;
	mc.onEnterFrame = function(){
		this._visible = true;
		var dx:Number = (this.targetWidth-this.sfondo_thumb.t_bianco._width)/5
		var dy:Number = (this.targetHeight-this.sfondo_thumb.t_bianco._height)/5
		this.sfondo_thumb.t_bianco._width  += dx
		this.sfondo_thumb.t_bianco._height += dy
		this.sfondo_thumb.t_nero._width    = this.sfondo_thumb.t_bianco._width + 1
		this.sfondo_thumb.t_grigio._width  = this.sfondo_thumb.t_bianco._width + 3
		this.sfondo_thumb.t_nero._height   = this.sfondo_thumb.t_bianco._height + 1
		this.sfondo_thumb.t_grigio._height = this.sfondo_thumb.t_bianco._height + 3
		this.plus._x = Math.round(this.sfondo_thumb.t_bianco._x + this.sfondo_thumb.t_bianco._width - this.plus._width)
		this.plus._y = Math.round(this.sfondo_thumb.t_bianco._y + this.sfondo_thumb.t_bianco._height + 5)
		this.minus._x = this.plus._x
		this.minus._y = this.plus._y + this.plus._height + 5
		if(this.cont.getBytesLoaded() >= this.cont.getBytesTotal() && this.cont.getBytesTotal() > 40 && this.cont._width > 4){
			if(Math.abs(dx) < .1 and Math.abs(dy) < .1){
				this.sfondo_thumb.t_bianco._width  = this.targetWidth
				this.sfondo_thumb.t_bianco._height = this.targetHeight
				this.sfondo_thumb.t_nero._width    = this.sfondo_thumb.t_bianco._width + 1
				this.sfondo_thumb.t_grigio._width  = this.sfondo_thumb.t_bianco._width + 3
				this.sfondo_thumb.t_nero._height   = this.sfondo_thumb.t_bianco._height + 1
				this.sfondo_thumb.t_grigio._height = this.sfondo_thumb.t_bianco._height + 3						
				this.plus._x = Math.round(this.sfondo_thumb.t_bianco._x + this.sfondo_thumb.t_bianco._width - this.plus._width)
				this.plus._y = Math.round(this.sfondo_thumb.t_bianco._y + this.sfondo_thumb.t_bianco._height + 5)	
				this.minus._x = this.plus._x
				this.minus._y = this.plus._y + this.plus._height + 5				
				delete this.onEnterFrame;
				this.onEnterFrame = function(){
					if(this.cont._alpha > 100){
						delete this.onEnterFrame
						_root.toLoad -= 1
						if(_root.toLoad <= 0){
							preloader._visible = false
						}
						nav.mover._visible = true
					}
					this.cont._alpha += 5;						
				}
			}
		}
	}	
}


/** activate the mover navigator **/
function resizeMover(w, h, w1, h1){
	var mover:MovieClip = _root.nav.mover
	var controller = _root.nav.sfondo_thumb
	mover._visible = true
	trace("resizeMover")
	if(w != null){
		var prop_1 = w/w1
		var prop_2 = h/h1		
		controller.prop_1 = prop_1
		controller.prop_2 = prop_2
		controller.prop_3 = w/nav.cont._width
		controller.prop_4 = h/nav.cont._height
		mover._width  = nav.cont._width / prop_1
		mover._height = nav.cont._height / prop_2
		mover.maxW = mover._width
		mover.maxH = mover._height
		mover.rapporto = mover.maxW/mover.maxH
		nav.piu._visible = true
		nav.meno._visible = true
		mover._x = mover._width/2 + 5
		mover._y = mover._height/2 + 5
	}	
	mover.onPress = function(){
		trace("mover OnPress")
		_root.zoomed.cont.zoom.removeMovieClip();
		delete this.onEnterFrame
		this.startDrag(false, Math.ceil(this._width/2) + 5, Math.ceil(this._height/2) + 5, nav.cont._width - (this._width/2)  + 5, nav.cont._height - (this._height/2) + 5)
		this.onEnterFrame = function(){
			invalidate();
			updateAfterEvent();
		}
		invalidate()
	}
	mover.onRelease = function(){
		trace("mover on release")
		stopDrag();
		delete this.onEnterFrame;
		invalidate();
		loadAltererdImage();
	}
	nav.sfondo_thumb.onMouseUp = function(){
		if(this._parent.cont.hitTest(_root._xmouse, _root._ymouse) && !this._parent.mover.hitTest(_root._xmouse, _root._ymouse)){
			trace("controller onMouseUp")
			var b = this._parent.cont.getBounds( _root )
			moveMover(_root._xmouse - b.xMin, _root._ymouse - b.yMin)
		}
	}	
}


/** 
* invalidate 
* the main function for navigate large image
**/
function invalidate(){
	// validate mover position first
	var bounds:Object = mover.getBounds( nav )
	if(mover.yMin < 5){
		mover._y = mover._height/2 + 5
	}
	var mover:MovieClip = _root.nav.mover
	var image = _root.zoomed.cont['img_' + _root.zoomed.cont.index]
	var x = ((mover._x - 5) - mover._width/2) *  nav.sfondo_thumb.prop_3
	var y = ((mover._y - 5) - mover._height/2) * nav.sfondo_thumb.prop_4
	image._xscale = 100*(mover.maxW/mover._width)
	image._yscale = 100*(mover.maxW/mover._width)
	x = x*(image._xscale/100)
	y = y*(image._yscale/100)	
	image._x = -x
	image._y = -y
}


/** zoom plus **/

function zoomPlus(val:Boolean):Void{
	var mover:MovieClip = _root.nav.mover
	var image = _root.zoomed.cont['img_' + _root.zoomed.cont.index]
	zoomed.cont.zoom.removeMovieClip();
	if(val == 1){
		mover.onEnterFrame = function(){
			mover.targetW = mover._width*0.98
			if(mover.targetW < 10){
				mover.targetW = 10
			}
			mover.targetH = mover.targetW/mover.rapporto
			invalidate()
			mover._width = this.targetW
			mover._height = this.targetH
		}
	} else {
		delete mover.onEnterFrame
		invalidate()
		loadAltererdImage()
	}
}


/** zoom minus **/
function zoomMinus(val:Boolean):Void{
	var mover:MovieClip = _root.nav.mover
	var image = _root.zoomed.cont['img_' + _root.zoomed.cont.index]
	_root.zoomed.cont.zoom.removeMovieClip();
	if(val == 1){
		mover.onEnterFrame = function(){
			mover.targetW = mover._width*1.05
			if(mover.targetW > nav.cont._width){
				mover.targetW = nav.cont._width
			}
			mover.targetH = mover.targetW/mover.rapporto
			checkMover()	// check right position of mover
			invalidate()							
			mover._width = this.targetW
			mover._height = this.targetH
		}
	} else {
		delete mover.onEnterFrame
		invalidate()
		loadAltererdImage()	
	}
}


/** check mover **/
function checkMover(){
	var a = nav.mover.getBounds( _root)
	var b = nav.cont.getBounds( _root )
	if(a.xMax > b.xMax){
		nav.mover._x = nav.cont._x + nav.cont._width - nav.mover._width/2
	}
	if(a.yMax > b.yMax){
		nav.mover._y = nav.cont._y + nav.cont._height - nav.mover._height/2
	}
	if(nav.mover._x < nav.mover._width/2 + 5){
		nav.mover._x = Math.ceil(nav.mover._width/2) + 5
	}
	if(nav.mover._y < nav.mover._height/2 + 5){
		nav.mover._y = Math.ceil(nav.mover._height/2) + 5
	}	
}


/** load the zoomed image **/
function loadAltererdImage(alt:String){
	_root.zoomed.cont.zoom.removeMovieClip();
	var img = zoomed.cont.image
	if(alt != undefined){
		img = alt
	}
	var mover:MovieClip = nav.mover
	if(mover.maxW - mover._width != 0){
		var x = (mover._x - mover._width/2  - 5) * nav.sfondo_thumb.prop_3
		var y = (mover._y - mover._height/2 - 5) * nav.sfondo_thumb.prop_4
		var mc:MovieClip = _root.zoomed.cont['img_' + _root.zoomed.cont.index]
		x = x * (mc._xscale/100)
		y = y * (mc._yscale/100)	
		x = x * (_root.zoomed.cont.stat[0] / mc._width)
		y = y * (_root.zoomed.cont.stat[1] / mc._height)
		var w = _root.zoomed.cont.stat[0] / nav.cont._width
		w = w * mover._width
		var str:String = basePath + "?command=resized&image=" + img + "&width=" + int(w) + "&x=" + int(x) + "&y=" + int(y) + "&contentWidth=" + contentWidth
		_root.zoomed.cont.createEmptyMovieClip("zoom",999)
		var clip:MovieClip = _root.zoomed.cont.zoom.createEmptyMovieClip("clip" + new Date().getTime(),1)
		_root.zoomed.cont.zoom._alpha = 0
		_root.preloader._visible = true
		clip.loadMovie(str)
		trace("loadAltererdImage: " + str)
		_root.zoomed.cont.onEnterFrame = function(){			
			if(clip.getBytesLoaded() >= clip.getBytesTotal() && clip.getBytesLoaded() > 4){
				if(this.zoom._alpha >= 100){
					delete this.onEnterFrame
					_root.preloader._visible = false
				}
				this.zoom._alpha += 10
			}
		}
	}
}