/*
 *  	zoomy 1.2 - jquery plugin

 *	http://redeyeops.com/plugins/zoomy
 *
 *	copyright (c) 2010 jacob lowe (http://redeyeoperations.com)
 *	dual licensed under the mit (mit-license.txt)
 *	and gpl (gpl-license.txt) licenses.
 *
 *	built for jquery library
 *	http://jquery.com
 *
 *  	addition fixes and modifications done by larry battle ( blarry@bateru.com )
 *	# code has been refactored and the logic has been corrected.
 *
 */
(function($){
        
// global zoomys state, indexed, 0 = no zoom, 1 = zoom;    

var zoomystate = [];


    jquery.fn.zoomy = function(event, options) {

	//defaults
	var defaults = {
	    zoomsize: 200,
	    round: true,
	    glare: true,
	    zoomtext: 'default',
	    clickable: false,
	    attr: 'href'
	}, defaultevent = 'click';
	
	if(typeof(event) === 'object' && options === undefined){
	    options = event;
	    event = defaultevent;
	}else if(event === undefined){
	    event = defaultevent;
	}
	
	options = $.extend(defaults, options);
    
	// add zoomy
	
	var addzoomy = function(ele, i) {
	    zoomystate.push(0);
	    
	    // adds functionality with ability to zoom in and also link to another page
	    
	    var attribute = function(){
		if(typeof(ele.attr(options.attr)) === 'string' && options.attr !== 'href'){
		    return ele.attr(options.attr);
		}else{
		    return ele.attr('href');
		}
	    },
	    image = attribute(),
	    cursor = function(){
		if($.browser.mozilla){
		    return '-moz-zoom-in';
		}else if($.browser.webkit){
		    return '-webkit-zoom-in';
		}else{
		    return 'cell';
		}
	    };
	        
	    ele.css({'position': 'relative', 'cursor': cursor}).append('<div class="zoomy zoom-obj-'+i+'" rel="'+i+'"><img id="tmp"/></div>');
	    var zoom = $('.zoom-obj-'+i);
	    zoomparams(ele, zoom);
	    // load zoom image after params are set
	    loadimage(ele, image, zoom);
	    
	    var eventhandler = function(){
		var zoomdefaulttext = function(x){
		    if(options.zoomtext === 'default' || options.zoomtext === ''){
			    options.zoomtext = x;
		    };
		    return true;
		},
		clickablity = function(){
		    if(!options.clickable){
			    ele.bind('click',function(){return false;});
		    }
		};
		switch(event){
		    case 'dblclick' :
			clickablity();
			zoomdefaulttext('double click to zoom in');
			break;
		    case 'mouseover' || 'mouseenter' :
			clickablity();
			zoomdefaulttext('mouse over to zoom in');
			zoombarenter(ele);
			break;
		    default:
			clickablity();
			zoomdefaulttext('click to zoom in');
			break;
		}
		//case with event to initiate the zoom
		//support for mouseover, mouseenter click, doubleclick,
		ele.bind(event, function(){
		    if(zoomystate[i] === 0){
			zoom.css({opacity: 1}).addclass('cursorhide').show();
			zoomystate[i] = 1;
			zoombarleave(ele, zoom);
                        
			    settimeout(function () {
				if (!zoom.find('img').length) {
				    zoomenter(ele, zoom, image);
				}
			    }, 100);
		    }else{
			zoom.css({opacity: 0}).removeclass('cursorhide');
			zoomystate[i] = 0;
		    }
                    
                    //unbind event mouse over to fix hover conflict issues 
                    
                    if(event === 'mouseover' || event === 'mouseenter'){
			ele.unbind(event);
		    }
                    
		    toggleclasses(ele);
		    return false;
		});
		
		
	    }
	    
	    eventhandler();
	    
	    //todo fix issue with mouse over and mouse enter conflict with this hover statment
	    
	    ele.hover(function () {

		if(zoomystate[i] === 0){
		    zoombarenter(ele);
		}else{
		    zoomenter(ele, zoom, image);
		}

	    }, function (){

		if(zoomystate[i] === 0){
		    zoombarleave(ele);
		}else{
		    zoomleave(ele, zoom);
		}

	    });
	},

	zoombarenter = function(ele){
	    var zb = ele.find('.zoombar');
	    if(zb.length ===0){
//		ele.append('<span class="zoombar">'+options.zoomtext+'</span>');
	    }else{
//		zb.html(options.zoomtext);
	    }
	},

	zoombarleave = function(ele){
//		ele.find('.zoombar').html(options.zoomtext);
	},

	zoomenter = function(ele, zoom, image){
	    var isidbrokezoomy = (zoom.attr('id') === 'brokezoomy');
		if ( !isidbrokezoomy ) {
		    
		    //resetzoom(ele, zoom);
		    startzoom(ele, zoom);

		    toggleclasses(ele);
		}
	},
	toggleclasses = function(ele){
	    var img = ele.find('img');
	    if(zoomystate[ele.find('.zoomy').attr('rel')] === 0){
		ele.removeclass('inactive');
	    }else{
		ele.addclass('inactive');
	    }
	},

	zoomleave = function(ele, zoom){
	    if (zoom.attr('id') !== 'brokezoomy' && !zoom.find('img').length ) {
		settimeout(function () {
			zoom.hide();
		},100);
	    }
	},

	// start zoom
	//includes mouse move event
	startzoom = function(ele, zoom) {
	    var ratio = function(x, y){
		var z = x/y;
		return z;
	    },
	    l = ele.offset(),
	    zoomimgx = parseint(ele.attr('x'), 10),
	    zoomimgy = parseint(ele.attr('y'), 10),
	    tnimgx = ele.width(),
	    tnimgy = ele.height(),
	    zoomsize = options.zoomsize,
	    halfsize = zoomsize / 2,
	    ratiox = ratio(tnimgx,zoomimgx),
	    ratioy = ratio(tnimgy,zoomimgy),
	    stop = math.round(halfsize - (halfsize * ratiox)),
	    stoppos = function(x){
		var p = (x - zoomsize) + stop;
		return p;
	    },
	    rightstop = stoppos(tnimgx),
	    bottomstop = stoppos(tnimgy),
	    zoomy = zoomimgy - zoomsize,
	    zoomx = zoomimgx - zoomsize,
	    mousepos = function(x,y){
		var p = x-y-halfsize;	
		return p;
	    },
	    zoompos = function(x,y,z){
		var p = math.round((x - y) / z)-halfsize;
		return p;
	    },
	    cdcreate = function(a,b,c,d,e,f){
		var bgpos = a+b+'px '+c+d+'px',
		o = {
		    backgroundposition: bgpos,
		    left: e,
		    top: f
		};
		return o;
	    };
	    
	    // mouse move event
	    
	    ele.mousemove(function (e) {

		if(zoomystate[zoom.attr('rel')] === 1){
		    var posx = mousepos(e.pagex,l.left),
		    posy = mousepos(e.pagey,l.top),
		    leftx = zoompos(e.pagex,l.left,ratiox),
		    topy = zoompos(e.pagey,l.top,ratioy),
		    arrposb = [
			['-', leftx,'-',topy,posx,posy],
			['',0,'-',topy,-stop,posy],
			['',0,'',0,-stop,-stop],
			['',0,'-',zoomy,-stop,bottomstop],
			['-',leftx,'',0,posx,-stop],
			['-',zoomx,'',0,rightstop,-stop],
			['-',zoomx,'-',topy,rightstop,posy],
			['-',zoomx,'-',zoomy,rightstop,bottomstop],
			['-',leftx,'-',zoomy,posx,bottomstop]
		    ],
		    cssarrofobj = function(){
			var ar = [];
			for ( i=0; i < arrposb.length; i++) {
			    var ap = arrposb[i],
			    posb = cdcreate(ap[0],ap[1],ap[2],ap[3],ap[4],ap[5]);
			    ar.push(posb);
			}
			return ar;
		    },	
		    a = -stop <= posx,
		    e2 = -stop > posx,
		    b = -stop <= posy,
		    f = -stop > posy,
		    d = bottomstop > posy,
		    g = bottomstop <= posy,
		    c = rightstop > posx,
		    j = rightstop <= posx,
		    cssarrindex = ( a && b && c && d ) ? 0 : ( e2 ) ? ( b && d ) ? 1 : ( f ) ? 2 : ( g ) ? 3 : null : ( f ) ? (c) ? 4 : 5 : ( j ) ? ( d ) ? 6 : 7 : ( g ) ? 8 : null;
		    zoom.show().css( cssarrofobj()[ cssarrindex ] || {} );
		}
	    });
	},
	
	
	// load zoom image
	
	loadimage = function(ele, image, zoom) {
	    var y = ele.children('img').height(),
		x = ele.children('img').width(),
		zs = options.zoomsize / 2;
		//move the zoomy out of the screen view while loading img
		zoom.show('').css({top:'-999999px',left:'-999999px'});
    
	    if (zoom.find('img').attr('src') !== image) {
		zoom.find('img').attr('src', image).load(function(){
		    
		    ele.attr({
			'x': zoom.find('img').width(),
			'y': zoom.find('img').height()
		    });
		    if (options.glare) {
			zoom.html('<span/>').css({
			    'background-image': 'url(' + image + ')'
			});
			settimeout(function () {
			    setglare(zoom);
			}, 100);
		    } else {
			zoom.html('').css({
			    'background-image': 'url(' + image + ')'
			});
		    }
		}).each(function(){
		if(this.complete || (jquery.browser.msie && parseint(jquery.browser.version, 10) === 6)){
		    $(this).trigger("load");
		}
	    });

	    }
	},

	resetzoom = function(ele, zoom, x , y) {
	    var img = ele.children('img');
	    var mid = options.zoomsize/2;
	    if(!x){x=0;}
	    if(!y){y=0;}
	    zoom.css({
		left: x-mid+'px',
		top: y-mid+'px'
	    }).parent('a').css({
		height: img.height(),
		width: img.width()
	    });
	},

	zoomparams = function(ele, zoom) {
	    var img = ele.children('img'),
	    margin = img.css('margin-left'),
	    namepick = function(img){
		var f = img.css('float');
		    if(f){
			if(f === 'none'){
			    var inline = img.attr('style');
			    if(inline){
				var incss = inline.split(';');
				for(i = 0; i<= incss.length; i++){
				    if(incss[i]) var style = incss[i].split(':');
				    else var style = [0,0];
				    if(style[0]==='float'){
					return(style[1]);
				    }
				}
			    }else{
				return f;
			    }

			}else{

			    return f;

			}
		    }else{
			if(img.parent('*').css('text-align') === 'center'){
			    return 'center';
			}else{
			    return 'unknown';
			}
		    }
	    }
	    
	    zoom.css({
		height: options.zoomsize,
		width: options.zoomsize
	    }).css( getborderradiuscssobj() );

	    if( !options.glare ){
		zoom.children('span').css({
		    height: options.zoomsize - 10,
		    width: options.zoomsize - 10
		});
	    }


	    if(margin === undefined || margin === ''){margin = '5px';}
    
    
	    var cssobj = { 
		'left':[{
			'margin': margin,
			'float': 'left'
		}],
		'right':[{
			'margin': margin,
			'float': 'right'
		}],
		'center':[{
			'margin': margin+' auto',
			'display': 'block'
		}],
		'unknown' : [{
			'margin' : margin,
			'display': 'block'
		}],
		'none' : [{
			'margin': margin,
			'display': 'block'
		}]
	    },

	    cssnamepick = namepick(img);

		    img.css('margin', '0px');
		    ele.css( cssobj[ cssnamepick ][0]);


	    img.one("load",function(){
		ele.css({
			'display': 'block',
			height: img.height(),
			width: img.width(),
			'cursor': 'normal'
		    });
	    }).each(function(){
		if(this.complete || (jquery.browser.msie && parseint(jquery.browser.version, 10) === 6)){
		    $(this).trigger("load");
		}
	    });

	},

	getborderradiuscssobj = function(x){
		    if( !options.round ){
			return "";
		    }else{
			var cssobj = {};
			if(x === undefined){
			    cssobj['-webkit-border-radius'] = cssobj['-moz-border-radius'] = cssobj[ 'border-radius' ] = options.zoomsize / 2 + 'px';
			}else{
			    cssobj['-webkit-border-radius'] = cssobj['-moz-border-radius'] = cssobj[ 'border-radius' ] = options.zoomsize / 2 + 'px '+options.zoomsize / 2 + 'px 0px 0px';
			}
			
			if(jquery.browser.msie && parseint(jquery.browser.version, 10) === 9){$('.zoomy').find('span').css('margin', '0');}
			
			return cssobj;

		    }
	},
	setglare = function(zoom) {
		    zoom.children('span').css({
			    height: options.zoomsize/2,
			    width: options.zoomsize - 10
		    }).css( getborderradiuscssobj(0) );
	};

	$(this).each(function() {
	    addzoomy($(this), zoomystate.length);
	});
    };
    
    
}(jquery));