jQuery转盘插件rotate

jQuery.easing.jswing=jQuery.easing.swing;
jQuery.extend(jQuery.easing,{def:"easeOutQuad",swing:function(e,a,c,b,d){return jQuery.easing[jQuery.easing.def](e,a,c,b,d)},easeInQuad:function(e,a,c,b,d){return b*(a/=d)*a+c},easeOutQuad:function(e,a,c,b,d){return-b*(a/=d)*(a-2)+c},easeInOutQuad:function(e,a,c,b,d){if((a/=d/2)<1)return b/2*a*a+c;return-b/2*(--a*(a-2)-1)+c},easeInCubic:function(e,a,c,b,d){return b*(a/=d)*a*a+c},easeOutCubic:function(e,a,c,b,d){return b*((a=a/d-1)*a*a+1)+c},easeInOutCubic:function(e,a,c,b,d){if((a/=d/2)<1)return b/
2*a*a*a+c;return b/2*((a-=2)*a*a+2)+c},easeInQuart:function(e,a,c,b,d){return b*(a/=d)*a*a*a+c},easeOutQuart:function(e,a,c,b,d){return-b*((a=a/d-1)*a*a*a-1)+c},easeInOutQuart:function(e,a,c,b,d){if((a/=d/2)<1)return b/2*a*a*a*a+c;return-b/2*((a-=2)*a*a*a-2)+c},easeInQuint:function(e,a,c,b,d){return b*(a/=d)*a*a*a*a+c},easeOutQuint:function(e,a,c,b,d){return b*((a=a/d-1)*a*a*a*a+1)+c},easeInOutQuint:function(e,a,c,b,d){if((a/=d/2)<1)return b/2*a*a*a*a*a+c;return b/2*((a-=2)*a*a*a*a+2)+c},easeInSine:function(e,
a,c,b,d){return-b*Math.cos(a/d*(Math.PI/2))+b+c},easeOutSine:function(e,a,c,b,d){return b*Math.sin(a/d*(Math.PI/2))+c},easeInOutSine:function(e,a,c,b,d){return-b/2*(Math.cos(Math.PI*a/d)-1)+c},easeInExpo:function(e,a,c,b,d){return a==0?c:b*Math.pow(2,10*(a/d-1))+c},easeOutExpo:function(e,a,c,b,d){return a==d?c+b:b*(-Math.pow(2,-10*a/d)+1)+c},easeInOutExpo:function(e,a,c,b,d){if(a==0)return c;if(a==d)return c+b;if((a/=d/2)<1)return b/2*Math.pow(2,10*(a-1))+c;return b/2*(-Math.pow(2,-10*--a)+2)+c},
easeInCirc:function(e,a,c,b,d){return-b*(Math.sqrt(1-(a/=d)*a)-1)+c},easeOutCirc:function(e,a,c,b,d){return b*Math.sqrt(1-(a=a/d-1)*a)+c},easeInOutCirc:function(e,a,c,b,d){if((a/=d/2)<1)return-b/2*(Math.sqrt(1-a*a)-1)+c;return b/2*(Math.sqrt(1-(a-=2)*a)+1)+c},easeInElastic:function(e,a,c,b,d){e=1.70158;var f=0,g=b;if(a==0)return c;if((a/=d)==1)return c+b;f||(f=d*0.3);if(g<Math.abs(b)){g=b;e=f/4}else e=f/(2*Math.PI)*Math.asin(b/g);return-(g*Math.pow(2,10*(a-=1))*Math.sin((a*d-e)*2*Math.PI/f))+c},easeOutElastic:function(e,
a,c,b,d){e=1.70158;var f=0,g=b;if(a==0)return c;if((a/=d)==1)return c+b;f||(f=d*0.3);if(g<Math.abs(b)){g=b;e=f/4}else e=f/(2*Math.PI)*Math.asin(b/g);return g*Math.pow(2,-10*a)*Math.sin((a*d-e)*2*Math.PI/f)+b+c},easeInOutElastic:function(e,a,c,b,d){e=1.70158;var f=0,g=b;if(a==0)return c;if((a/=d/2)==2)return c+b;f||(f=d*0.3*1.5);if(g<Math.abs(b)){g=b;e=f/4}else e=f/(2*Math.PI)*Math.asin(b/g);if(a<1)return-0.5*g*Math.pow(2,10*(a-=1))*Math.sin((a*d-e)*2*Math.PI/f)+c;return g*Math.pow(2,-10*(a-=1))*Math.sin((a*
d-e)*2*Math.PI/f)*0.5+b+c},easeInBack:function(e,a,c,b,d,f){if(f==undefined)f=1.70158;return b*(a/=d)*a*((f+1)*a-f)+c},easeOutBack:function(e,a,c,b,d,f){if(f==undefined)f=1.70158;return b*((a=a/d-1)*a*((f+1)*a+f)+1)+c},easeInOutBack:function(e,a,c,b,d,f){if(f==undefined)f=1.70158;if((a/=d/2)<1)return b/2*a*a*(((f*=1.525)+1)*a-f)+c;return b/2*((a-=2)*a*(((f*=1.525)+1)*a+f)+2)+c},easeInBounce:function(e,a,c,b,d){return b-jQuery.easing.easeOutBounce(e,d-a,0,b,d)+c},easeOutBounce:function(e,a,c,b,d){return(a/=
d)<1/2.75?b*7.5625*a*a+c:a<2/2.75?b*(7.5625*(a-=1.5/2.75)*a+0.75)+c:a<2.5/2.75?b*(7.5625*(a-=2.25/2.75)*a+0.9375)+c:b*(7.5625*(a-=2.625/2.75)*a+0.984375)+c},easeInOutBounce:function(e,a,c,b,d){if(a<d/2)return jQuery.easing.easeInBounce(e,a*2,0,b,d)*0.5+c;return jQuery.easing.easeOutBounce(e,a*2-d,0,b,d)*0.5+b*0.5+c}});

// VERSION: 2.2 LAST UPDATE: 13.03.2012
/* 
 * Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
 * 
 * Made by Wilq32, wilq32@gmail.com, Wroclaw, Poland, 01.2009
 * Website: http://code.google.com/p/jqueryrotate/ 
 */

// Documentation removed from script file (was kinda useless and outdated)

(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);