static/watero/js/page/awardRotate.js

(function($) {
    var supportedCSS,styles=document.getElementsByTagName("head")[0].style,toCheck="transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
    for (var a=0;a<toCheck.length;a++) if (styles[toCheck[a]] !== undefined) supportedCSS = toCheck[a];
// Bad eval to preven google closure to remove it from code o_O
// After compresion replace it back to var IE = 'v' == '\v'
    var IE = eval('"v"=="\v"');

    jQuery.fn.extend({
        rotate:function(parameters)
        {
            if (this.length===0||typeof parameters=="undefined") return;
            if (typeof parameters=="number") parameters={angle:parameters};
            var returned=[];
            for (var i=0,i0=this.length;i<i0;i++)
            {
                var element=this.get(i);
                if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {

                    var paramClone = $.extend(true, {}, parameters);
                    var newRotObject = new Wilq32.PhotoEffect(element,paramClone)._rootObj;

                    returned.push($(newRotObject));
                }
                else {
                    element.Wilq32.PhotoEffect._handleRotation(parameters);
                }
            }
            return returned;
        },
        getRotateAngle: function(){
            var ret = [];
            for (var i=0,i0=this.length;i<i0;i++)
            {
                var element=this.get(i);
                if (element.Wilq32 && element.Wilq32.PhotoEffect) {
                    ret[i] = element.Wilq32.PhotoEffect._angle;
                }
            }
            return ret;
        },
        stopRotate: function(){
            for (var i=0,i0=this.length;i<i0;i++)
            {
                var element=this.get(i);
                if (element.Wilq32 && element.Wilq32.PhotoEffect) {
                    clearTimeout(element.Wilq32.PhotoEffect._timer);
                }
            }
        }
    });

// Library agnostic interface

    Wilq32=window.Wilq32||{};
    Wilq32.PhotoEffect=(function(){

        if (supportedCSS) {
            return function(img,parameters){
                img.Wilq32 = {
                    PhotoEffect: this
                };

                this._img = this._rootObj = this._eventObj = img;
                this._handleRotation(parameters);
            }
        } else {
            return function(img,parameters) {
                // Make sure that class and id are also copied - just in case you would like to refeer to an newly created object
                this._img = img;

                this._rootObj=document.createElement('span');
                this._rootObj.style.display="inline-block";
                this._rootObj.Wilq32 =
                    {
                        PhotoEffect: this
                    };
                img.parentNode.insertBefore(this._rootObj,img);

                if (img.complete) {
                    this._Loader(parameters);
                } else {
                    var self=this;
                    // TODO: Remove jQuery dependency
                    jQuery(this._img).bind("load", function()
                    {
                        self._Loader(parameters);
                    });
                }
            }
        }
    })();

    Wilq32.PhotoEffect.prototype={
        _setupParameters : function (parameters){
            this._parameters = this._parameters || {};
            if (typeof this._angle !== "number") this._angle = 0 ;
            if (typeof parameters.angle==="number") this._angle = parameters.angle;
            this._parameters.animateTo = (typeof parameters.animateTo==="number") ? (parameters.animateTo) : (this._angle);

            this._parameters.step = parameters.step || this._parameters.step || null;
            this._parameters.easing = parameters.easing || this._parameters.easing || function (x, t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b; }
            this._parameters.duration = parameters.duration || this._parameters.duration || 1000;
            this._parameters.callback = parameters.callback || this._parameters.callback || function(){};
            if (parameters.bind && parameters.bind != this._parameters.bind) this._BindEvents(parameters.bind);
        },
        _handleRotation : function(parameters){
            this._setupParameters(parameters);
            if (this._angle==this._parameters.animateTo) {
                this._rotate(this._angle);
            }
            else {
                this._animateStart();
            }
        },

        _BindEvents:function(events){
            if (events && this._eventObj)
            {
                // Unbinding previous Events
                if (this._parameters.bind){
                    var oldEvents = this._parameters.bind;
                    for (var a in oldEvents) if (oldEvents.hasOwnProperty(a))
                    // TODO: Remove jQuery dependency
                        jQuery(this._eventObj).unbind(a,oldEvents[a]);
                }

                this._parameters.bind = events;
                for (var a in events) if (events.hasOwnProperty(a))
                // TODO: Remove jQuery dependency
                    jQuery(this._eventObj).bind(a,events[a]);
            }
        },

        _Loader:(function()
        {
            if (IE)
                return function(parameters)
                {
                    var width=this._img.width;
                    var height=this._img.height;
                    this._img.parentNode.removeChild(this._img);

                    this._vimage = this.createVMLNode('image');
                    this._vimage.src=this._img.src;
                    this._vimage.style.height=height+"px";
                    this._vimage.style.width=width+"px";
                    this._vimage.style.position="absolute"; // FIXES IE PROBLEM - its only rendered if its on absolute position!
                    this._vimage.style.top = "0px";
                    this._vimage.style.left = "0px";

					/* Group minifying a small 1px precision problem when rotating object */
                    this._container =  this.createVMLNode('group');
                    this._container.style.width=width;
                    this._container.style.height=height;
                    this._container.style.position="absolute";
                    this._container.setAttribute('coordsize',width-1+','+(height-1)); // This -1, -1 trying to fix ugly problem with small displacement on IE
                    this._container.appendChild(this._vimage);

                    this._rootObj.appendChild(this._container);
                    this._rootObj.style.position="relative"; // FIXES IE PROBLEM
                    this._rootObj.style.width=width+"px";
                    this._rootObj.style.height=height+"px";
                    this._rootObj.setAttribute('id',this._img.getAttribute('id'));
                    this._rootObj.className=this._img.className;
                    this._eventObj = this._rootObj;
                    this._handleRotation(parameters);
                }
            else
                return function (parameters)
                {
                    this._rootObj.setAttribute('id',this._img.getAttribute('id'));
                    this._rootObj.className=this._img.className;

                    this._width=this._img.width;
                    this._height=this._img.height;
                    this._widthHalf=this._width/2; // used for optimisation
                    this._heightHalf=this._height/2;// used for optimisation

                    var _widthMax=Math.sqrt((this._height)*(this._height) + (this._width) * (this._width));

                    this._widthAdd = _widthMax - this._width;
                    this._heightAdd = _widthMax - this._height;	// widthMax because maxWidth=maxHeight
                    this._widthAddHalf=this._widthAdd/2; // used for optimisation
                    this._heightAddHalf=this._heightAdd/2;// used for optimisation

                    this._img.parentNode.removeChild(this._img);

                    this._aspectW = ((parseInt(this._img.style.width,10)) || this._width)/this._img.width;
                    this._aspectH = ((parseInt(this._img.style.height,10)) || this._height)/this._img.height;

                    this._canvas=document.createElement('canvas');
                    this._canvas.setAttribute('width',this._width);
                    this._canvas.style.position="relative";
                    this._canvas.style.left = -this._widthAddHalf + "px";
                    this._canvas.style.top = -this._heightAddHalf + "px";
                    this._canvas.Wilq32 = this._rootObj.Wilq32;

                    this._rootObj.appendChild(this._canvas);
                    this._rootObj.style.width=this._width+"px";
                    this._rootObj.style.height=this._height+"px";
                    this._eventObj = this._canvas;

                    this._cnv=this._canvas.getContext('2d');
                    this._handleRotation(parameters);
                }
        })(),

        _animateStart:function()
        {
            if (this._timer) {
                clearTimeout(this._timer);
            }
            this._animateStartTime = +new Date;
            this._animateStartAngle = this._angle;
            this._animate();
        },
        _animate:function()
        {
            var actualTime = +new Date;
            var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;

            // TODO: Bug for animatedGif for static rotation ? (to test)
            if (checkEnd && !this._parameters.animatedGif)
            {
                clearTimeout(this._timer);
            }
            else
            {
                if (this._canvas||this._vimage||this._img) {
                    var angle = this._parameters.easing(0, actualTime - this._animateStartTime, this._animateStartAngle, this._parameters.animateTo - this._animateStartAngle, this._parameters.duration);
                    this._rotate((~~(angle*10))/10);
                }
                if (this._parameters.step) {
                    this._parameters.step(this._angle);
                }
                var self = this;
                this._timer = setTimeout(function()
                {
                    self._animate.call(self);
                }, 10);
            }

            // To fix Bug that prevents using recursive function in callback I moved this function to back
            if (this._parameters.callback && checkEnd){
                this._angle = this._parameters.animateTo;
                this._rotate(this._angle);
                this._parameters.callback.call(this._rootObj);
            }
        },

        _rotate : (function()
        {
            var rad = Math.PI/180;
            if (IE)
                return function(angle)
                {
                    this._angle = angle;
                    this._container.style.rotation=(angle%360)+"deg";
                }
            else if (supportedCSS)
                return function(angle){
                    this._angle = angle;
                    this._img.style[supportedCSS]="rotate("+(angle%360)+"deg)";
                }
            else
                return function(angle)
                {
                    this._angle = angle;
                    angle=(angle%360)* rad;
                    // clear canvas
                    this._canvas.width = this._width+this._widthAdd;
                    this._canvas.height = this._height+this._heightAdd;

                    // REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
                    this._cnv.translate(this._widthAddHalf,this._heightAddHalf);	// at least center image on screen
                    this._cnv.translate(this._widthHalf,this._heightHalf);			// we move image back to its orginal
                    this._cnv.rotate(angle);										// rotate image
                    this._cnv.translate(-this._widthHalf,-this._heightHalf);		// move image to its center, so we can rotate around its center
                    this._cnv.scale(this._aspectW,this._aspectH); // SCALE - if needed ;)
                    this._cnv.drawImage(this._img, 0, 0);							// First - we draw image
                }

        })()
    }

    if (IE)
    {
        Wilq32.PhotoEffect.prototype.createVMLNode=(function(){
            document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
            try {
                !document.namespaces.rvml && document.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
                return function (tagName) {
                    return document.createElement('<rvml:' + tagName + ' class="rvml">');
                };
            } catch (e) {
                return function (tagName) {
                    return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
                };
            }
        })();
    }
})(jQuery);