jquery.parallaxify.min.js

/*!
 * Parallaxify.js v0.0.2
 * http://hwthorn.github.io/parallaxify
 *
 * Copyright 2013, Felix Pflaum
 * Released under the MIT license
 * http://hwthorn.mit-license.org
 */
(function(f,g,v,d){function m(a,c){this.element=a;this.options=f.extend({},t,c);this._defaults=t;this._name=h;this.init()}var h="parallaxify",t={positionProperty:"position",horizontalParallax:!0,verticalParallax:!0,parallaxBackgrounds:!0,parallaxElements:!0,responsive:!1,useMouseMove:!0,useGyroscope:!0,alphaFilter:0.9,motionType:"natural",mouseMotionType:"gaussian",inputPriority:"mouse",motionAngleX:80,motionAngleY:80,adjustBasePosition:!0,alphaPosition:0.05},u={position:{setLeft:function(a,c){a.css("left",
c)},setTop:function(a,c){a.css("top",c)}},transform:{setPosition:function(a,c,b,e,d){a[0].style[w]="translate3d("+(c-b)+"px, "+(e-d)+"px, 0)"}}},j=function(a,c,b){if(null===c)return a;"undefined"===typeof b&&(b=0.5);return b*a+(1-b)*c},k=[],p={linear:function(a,c){return a<=-c?1:a>=c?-1:-a/c},natural:function(a,c){if(a<=-c)return 1;if(a>=c)return-1;k["n"+c]===d&&(k["n"+c]=Math.tan(0.01745*c));return-Math.tan(0.01745*a)/k["n"+c]},performance:function(a,c){if(a<=-c)return 1;if(a>=c)return-1;k["p"+c]===
d&&(k["p"+c]=c/90+4.2*Math.pow(c/90,7));return-(a/90+4.2*Math.pow(a/90,7))/k["p"+c]},gaussian:function(a,c){return 1-2*(1/(1+Math.exp(-(0.07056*(135/c)*(a/90^3))-1.5976*(135/c)*(a/90))))}},n=/^(Moz|Webkit|Khtml|O|ms|Icab)(?=[A-Z])/,q=f("script")[0].style,l="",r;for(r in q)if(n.test(r)){l=r.match(n)[0];break}"WebkitOpacity"in q&&(l="Webkit");"KhtmlOpacity"in q&&(l="Khtml");var w=l+(0<l.length?"T"+"transform".slice(1):"transform"),s=(n=f("<div />",{style:"background:#fff"}).css("background-position-x")!==
d)?function(a,c,b){a.css({"background-position-x":c,"background-position-y":b})}:function(a,c,b){a.css("background-position",c+" "+b)},x=n?function(a){return[a.css("background-position-x"),a.css("background-position-y")]}:function(a){return a.css("background-position").split(" ")},y=g.requestAnimationFrame||g.webkitRequestAnimationFrame||g.mozRequestAnimationFrame||g.oRequestAnimationFrame||g.msRequestAnimationFrame||function(a){setTimeout(a,1E3/30)};m.prototype={init:function(){this.options.name=
h+"_"+Math.floor(1E9*Math.random());this.tilt={beta:0,gamma:0};this._defineElements();this._defineGetters();this._defineSetters();this._detectMobile();this._detectMotionType();this._detectViewport();this._handleWindowLoadAndResize();this.refresh({firstLoad:!0});this._startAnimation()},_defineElements:function(){this.$element=this.element===v.body||this.element===g?f("body"):f(this.element);this.$viewportElement=f(g)},_defineGetters:function(){var a=p[this.options.motionType],c=p[this.options.mouseMotionType];
this._getMoveHorizontal=function(){if(this.useMouseMove&&null!==this.clientX&&this.clientX!==this.oldClientX)return c(this.options.motionAngleX*(1-2*this.clientX/this.viewportWidth),this.options.motionAngleX);if(this.useSensor&&null!==this.beta&&null!==this.gamma){var b=this.tilt;return this.viewportLandscape?this.viewportFlipped?a(-b.beta,this.options.motionAngleX):a(b.beta,this.options.motionAngleX):this.viewportFlipped?a(-b.gamma,this.options.motionAngleX):a(b.gamma,this.options.motionAngleX)}this.useSensor=
!1;return c(this.options.motionAngleX*(1-2*this.oldClientX/this.viewportWidth),this.options.motionAngleX)};this._getMoveVertical=function(){if(this.options.useMouseMove&&null!==this.clientY&&this.clientY!==this.oldClientY)return c(this.options.motionAngleY*(1-2*this.clientY/this.viewportHeight),this.options.motionAngleY);if(this.useSensor&&null!==this.beta&&null!==this.gamma){var b=this.tilt;return this.viewportLandscape?this.viewportFlipped?a(-b.gamma,this.options.motionAngleY):a(b.gamma,this.options.motionAngleY):
this.viewportFlipped?a(-b.beta,this.options.motionAngleY):a(b.beta,this.options.motionAngleY)}this.useSensor=!1;return c(this.options.motionAngleY*(1-2*this.oldClientY/this.viewportHeight),this.options.motionAngleY)}},_defineSetters:function(){var a=this,c=u[a.options.positionProperty];this._setPosition=c.setPosition||function(b,e,d,f,g){a.options.horizontalParallax&&c.setLeft(b,e,d);a.options.verticalParallax&&c.setTop(b,f,g)}},refresh:function(a){(!a||!a.firstLoad)&&this._reset();this._findElements();
this._findBackgrounds();a&&(a.firstLoad&&/WebKit/.test(navigator.userAgent))&&f(g).load(function(){var a=f("body");oldLeft=a.scrollLeft();oldTop=a.scrollTop();a.scrollLeft(oldLeft+1);a.scrollTop(oldTop+1);a.scrollLeft(oldLeft);a.scrollTop(oldTop)})},_detectViewport:function(){this.viewportWidth=this.$viewportElement.width();this.viewportHeight=this.$viewportElement.height();this.useSensor&&(this.viewportFlipped=180===g.orientation,this.viewportLandscape=90===Math.abs(g.orientation))},_detectMobile:function(){var a=
navigator.userAgent||navigator.vendor||g.opera;this.isMobile=/(bb\d+|meego).+mobile|android|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od|ad)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|playbook|plucker|pocket|psp|series(4|6)0|silk|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,
4))},_detectMotionType:function(){this.useMouseMove=this.useSensorMoz=this.useSensorWebkit=this.useSensor=!1;if(this.options.useGyroscope&&(this.isMobile||"gyroscope"===this.options.inputPriority))this.useSensorWebkit=g.DeviceOrientationEvent!==d,this.useSensorMoz=g.OrientationEvent!==d,this.useSensor=this.useSensorWebkit||this.useSensorMoz;this.options.useMouseMove&&!this.isMobile&&(this.useMouseMove=this.$viewportElement.mousemove!==d)},_findElements:function(){var a=this;if(this.elements!==d)for(var c=
this.elements.length-1;0<=c;c--)this.elements[c].$element.data("parallaxify-ElementIsActive",d);this.elements=[];this.options.parallaxElements&&this.$element.find("[data-parallaxify-range],[data-parallaxify-range-x],[data-parallaxify-range-y]").each(function(){var b=f(this);if(b.data("parallaxify-ElementIsActive")){if(b.data("parallaxify-ElementIsActive")!==this)return}else b.data("parallaxify-ElementIsActive",this);b.data("parralaxify-originalLeft")?(b.css("left",b.data("parallaxify-originalLeft")),
b.css("top",b.data("parallaxify-originalTop"))):(b.data("parallaxify-originalLeft",b.css("left")),b.data("parallaxify-originalTop",b.css("top")));a.elements.push({$element:b,originalPositionLeft:b.position().left,originalPositionTop:b.position().top,parallaxDistanceX:b.data("parallaxify-range-x")!==d?b.data("parallaxify-range-x"):b.data("parallaxify-range")!==d?b.data("parallaxify-range"):0,parallaxDistanceY:b.data("parallaxify-range-y")!==d?b.data("parallaxify-range-y"):b.data("parallaxify-range")!==
d?b.data("parallaxify-range"):0,width:b.outerWidth(!0),height:b.outerHeight(!0)})})},_findBackgrounds:function(){var a=this,c;this.backgrounds=[];if(this.options.parallaxBackgrounds){c=this.$element.find("[data-parallaxify-background-range],[data-parallaxify-background-range-x],[data-parallaxify-background-range-y]");if(this.$element.data("parallaxify-background-range")||this.$element.data("parallaxify-background-range-x")||this.$element.data("parallaxify-background-range-y"))c=c.add(this.$element);
c.each(function(){var b=f(this),c=x(b);if(b.data("parallaxify-backgroundIsActive")){if(b.data("parallaxify-backgroundIsActive")!==this)return}else b.data("parallaxify-backgroundIsActive",this);b.data("parralaxify-backgroundOriginalLeft")?s(b,b.data("parallaxify-backgroundOriginalLeft"),b.data("parallaxify-backgroundOriginalTop")):(b.data("parallaxify-backgroundOriginalLeft",c[0]),b.data("parallaxify-backgroundOriginalTop",c[1]));a.backgrounds.push({$element:b,originalValueLeft:c[0],originalValueTop:c[1],
originalBackgroundPositionLeft:isNaN(parseInt(c[0],10))?0:parseInt(c[0],10),originalBackgroundPositionTop:isNaN(parseInt(c[1],10))?0:parseInt(c[1],10),originalPositionLeft:b.position().left,originalPositionTop:b.position().top,parallaxDistanceX:b.data("parallaxify-background-range-x")!==d?b.data("parallaxify-background-range-x"):b.data("parallaxify-background-range")!==d?b.data("parallaxify-background-range"):0,parallaxDistanceY:b.data("parallaxify-background-range-y")!==d?b.data("parallaxify-background-range-y"):
b.data("parallaxify-background-range")!==d?b.data("parallaxify-background-range"):0})})}},_reset:function(){var a,c,b,e;for(e=this.elements.length-1;0<=e;e--)a=this.elements[e],c=a.$element.data("parallaxify-originalLeft"),b=a.$element.data("parallaxify-originalTop"),this._setPosition(a.$element,c,c,b,b),a.$element.data("parallaxify-originalLeft",null).data("parallaxify-originalLeft",null).data("parallaxify-elementIsActive",null).data("parallaxify-backgroundIsActive",null);for(e=this.backgrounds.length-
1;0<=e;e--)a=this.backgrounds[e],a.$element.data("parallaxify-backgroundOriginalLeft",null).data("parallaxify-backgroundOriginalTop",null).data("parallaxify-backgroundIsActive",null),s(a.$element,a.originalValueLeft,a.originalValueTop)},destroy:function(){this._reset();this.useMouseMove&&this.$viewportElement.unbind("mousemove."+this.name);this.useSensorWebkit&&g.removeEventListener("deviceorientation",this._handleSensorWebkit,!1);this.useSensorMoz&&g.removeEventListener("MozOrientation",this._handleSensorMoz,
!1);f(g).unbind("load."+this.name).unbind("resize."+this.name).unbind("orientationchange."+this.name)},_processSensorData:function(){if(this.useSensor){var a=this.beta,c=this.gamma,b=0,e=0;90<a&&(a-=180);180<c&&(c-=360);this.initialBeta===d&&null!==a&&(this.initialBeta=a,this.useSensor&&"gyroscope"===this.options.inputPriority&&(this.useMouseMove=!1));this.initialGamma===d&&null!==c&&(this.initialGamma=c,this.useSensor&&"gyroscope"===this.options.inputPriority&&(this.useMouseMove=!1));this.options.adjustBasePosition&&
(this.initialGamma!==d&&this.initialBeta!==d)&&(this.initialGamma=-180>c-this.initialGamma?j(c+360,this.initialGamma,this.options.alphaPosition):180<c-this.initialGamma?j(c-360,this.initialGamma,this.options.alphaPosition):j(c,this.initialGamma,this.options.alphaPosition),this.initialBeta=-90>a-this.initialBeta?j(a+180,this.initialBeta,this.options.alphaPosition):90<a-this.initialBeta?j(a-180,this.initialBeta,this.options.alphaPosition):j(a,this.initialBeta,this.options.alphaPosition));b=this.initialBeta!==
d?a-this.initialBeta:a;e=this.initialGamma!==d?c-this.initialGamma:c;100<b?b-=180:-100>b&&(b+=180);200<e?e-=360:-200>e&&(e+=360);b=j(b,this.tilt.beta,this.options.alphaFilter);e=j(e,this.tilt.gamma,this.options.alphaFilter);this.tilt.beta=b;this.tilt.gamma=e}},_repositionElements:function(){var a=this._getMoveHorizontal(),c=this._getMoveVertical(),b,e,d,f;if(!(this.currentMoveHorizontal===a&&this.currentMoveVertical===c&&this.currentWidth===this.viewportWidth&&this.currentHeight===this.viewportHeight)){this.currentMoveHorizontal=
a;this.currentMoveVertical=c;this.currentWidth=this.viewportWidth;this.currentHeight=this.viewportHeight;for(f=this.elements.length-1;0<=f;f--)b=this.elements[f],e=this.options.horizontalParallax?Math.floor(a*b.parallaxDistanceX/2)+b.originalPositionLeft:b.originalPositionLeft,d=this.options.verticalParallax?Math.floor(c*b.parallaxDistanceY/2)+b.originalPositionTop:b.originalPositionTop,this._setPosition(b.$element,e,b.originalPositionLeft,d,b.originalPositionTop);for(f=this.backgrounds.length-1;0<=
f;f--)b=this.backgrounds[f],e=this.options.horizontalParallax?Math.floor(a*b.parallaxDistanceX/2)+b.originalBackgroundPositionLeft+"px":b.originalValueLeft,d=this.options.verticalParallax?Math.floor(c*b.parallaxDistanceY/2)+b.originalBackgroundPositionTop+"px":b.originalValueTop,s(b.$element,e,d)}},_handleWindowLoadAndResize:function(){var a=this,c=f(g);a.options.responsive&&c.bind("load."+this.name,function(){a.refresh()});c.bind("resize."+this.name,function(){a._detectViewport();a.options.responsive&&
a.refresh()});c.bind("orientationchange."+this.name,function(){a._detectViewport();a.options.responsive&&a.refresh()})},_startAnimation:function(){var a=this,c=!1;this.gamma=this.beta=0;this.clientX=this.oldClientX=Math.round(a.viewportWidth/2);this.clientY=this.oldClientY=Math.round(a.viewportHeight/2);var b=function(){a._processSensorData();a._repositionElements();c=!1},e=function(){c||(y(b),c=!0)};this._handleSensorWebkit=function(b){a.gamma=b.gamma;a.beta=b.beta;e()};this._handleSensorMoz=function(b){a.gamma=
180*b.x;a.beta=-90*b.y;e()};this._handleMouseMove=function(b){a.oldClientX=a.clientX;a.oldClientY=a.clientY;b.clientX!==d?a.clientX=b.clientX:a.clientX=b.pageX;b.clientY!==d?a.clientY=b.clientY:a.clientY=b.pageY;e()};this.useSensorWebkit?g.addEventListener("deviceorientation",a._handleSensorWebkit,!1):this.useSensorMoz&&g.addEventListener("MozOrientation",a._handleSensorMoz,!1);this.useMouseMove&&this.$viewportElement.bind("mousemove."+this.name,a._handleMouseMove);e()}};f.fn[h]=function(a){var c=
arguments;if(a===d||"object"===typeof a)return this.each(function(){f.data(this,"plugin_"+h)||f.data(this,"plugin_"+h,new m(this,a))});if("string"===typeof a&&"_"!==a[0]&&"init"!==a)return this.each(function(){var b=f.data(this,"plugin_"+h);b instanceof m&&"function"===typeof b[a]&&b[a].apply(b,Array.prototype.slice.call(c,1));"destroy"===a&&f.data(this,"plugin_"+h,null)})};f[h]=function(a){var c=f(g);return c[h].apply(c,Array.prototype.slice.call(arguments,0))};f[h].positionProperty=u;f[h].motionType=
p;g[h]=m})(jQuery,this,document);