(function(root, factory) { if (typeof define === 'function' && define.amd) { define(factory); } else if (typeof exports === 'object') { module.exports = factory(require, exports, module); } else { root.scrollReveal = factory(); } }(this, function(require, exports, module) { /* _ _ _____ _ _ | | | __ \ | | (_) ___ ___ _ __ ___ | | | |__) |_____ _____ __ _| | _ ___ / __|/ __| '__/ _ \| | | _ // _ \ \ / / _ \/ _` | | | / __| \__ \ (__| | | (_) | | | | \ \ __/\ V / __/ (_| | |_| \__ \ |___/\___|_| \___/|_|_|_| \_\___| \_/ \___|\__,_|_(_) |___/ v2.3.2 _/ | |__/ ================================================================================ scrollReveal.js (c) 2015 Julian Lloyd ( @julianlloyd ) Licensed under MIT ( http://www.opensource.org/licenses/mit-license.php ) ==============================================================================*/ window.scrollReveal = (function( window ){ 'use strict'; var _requestAnimFrame; var _extend; var _handler; var self; function scrollReveal( config ){ if ( !( this instanceof scrollReveal ) ) { return new scrollReveal( config ); } self = this; self.elems = {}; self.serial = 1; self.blocked = false; self.config = _extend( self.defaults, config ); if ( self.isMobile() && !self.config.mobile || !self.isSupported() ){ self.destroy(); return; } if ( self.config.viewport === window.document.documentElement ){ window.addEventListener( 'scroll', _handler, false ); window.addEventListener( 'resize', _handler, false ); } else { self.config.viewport.addEventListener( 'scroll', _handler, false ); } self.init( true ); } scrollReveal.prototype = { defaults: { enter: 'bottom', move: '8px', over: '0.6s', wait: '0s', easing: 'ease', scale: { direction: 'up', power: '5%' }, rotate: { x: 0, y: 0, z: 0 }, opacity: 0, mobile: false, reset: false, // Expects a reference to a DOM node (the node by default) // which is used as the context when checking element visibility. viewport: window.document.documentElement, // 'always' — delay every time an animation resets // 'onload' - delay only for animations triggered by first load // 'once' — delay only the first time an animation reveals delay: 'once', // vFactor changes when an element is considered in the viewport. // The default value of 0.60 means 60% of an element must be // visible for its reveal animation to trigger. vFactor: 0.60, complete: function( el ){} // Note: reset animations do not complete. }, // Queries the DOM, builds scrollReveal elements and triggers animation. // @param {boolean} flag — a hook for controlling delay on first load. init: function( flag ){ var serial; var elem; var query; query = Array.prototype.slice.call( self.config.viewport.querySelectorAll('[data-sr]:not([data-sr=""])') ); query.forEach(function( el ){ serial = self.serial++; elem = self.elems[ serial ] = { domEl: el }; elem.config = self.configFactory( elem ); elem.styles = self.styleFactory( elem ); elem.seen = false; el.removeAttribute('data-sr'); el.setAttribute( 'style', elem.styles.inline + elem.styles.initial ); }) self.scrolled = self.scrollY(); self.animate( flag ); }, // Applies and removes appropriate styles. // @param {boolean} flag — a hook for controlling delay on first load. animate: function( flag ){ var key; var elem; var visible; // Begin element store digest. for ( key in self.elems ){ if ( self.elems.hasOwnProperty( key ) ){ elem = self.elems[ key ]; visible = self.isElemInViewport( elem ); if ( visible ){ if ( self.config.delay === 'always' || ( self.config.delay === 'onload' && flag ) || ( self.config.delay === 'once' && !elem.seen ) ){ // Use delay. elem.domEl.setAttribute( 'style', elem.styles.inline + elem.styles.target + elem.styles.transition ); } else { // Don’t use delay. elem.domEl.setAttribute( 'style', elem.styles.inline + elem.styles.target + elem.styles.reset ); } elem.seen = true; if ( !elem.config.reset && !elem.animating ){ elem.animating = true; complete( key ); } } else if ( !visible && elem.config.reset ){ elem.domEl.setAttribute( 'style', elem.styles.inline + elem.styles.initial + elem.styles.reset ); } } } // Digest complete, now un-block the event handler. self.blocked = false; // Cleans the DOM and removes completed elements from self.elems. // @param {integer} key — self.elems property key. function complete( key ){ var elem = self.elems[ key ]; setTimeout(function(){ elem.domEl.setAttribute( 'style', elem.styles.inline ); elem.config.complete( elem.domEl ); delete self.elems[ key ]; }, elem.styles.duration ); } }, // Parses an elements data-sr attribute, and returns a configuration object. // @param {object} elem — An object from self.elems. // @return {object} configFactory: function( elem ){ var parsed = {}; var config = {}; var words = elem.domEl.getAttribute('data-sr').split( /[, ]+/ ); words.forEach(function( keyword, i ){ switch ( keyword ){ case 'enter': parsed.enter = words[ i + 1 ]; break; case 'wait': parsed.wait = words[ i + 1 ]; break; case 'move': parsed.move = words[ i + 1 ]; break; case 'ease': parsed.move = words[ i + 1 ]; parsed.ease = 'ease'; break; case 'ease-in': if ( words[ i + 1 ] == 'up' || words[ i + 1 ] == 'down' ){ parsed.scale.direction = words[ i + 1 ]; parsed.scale.power = words[ i + 2 ]; parsed.easing = 'ease-in'; break; } parsed.move = words[ i + 1 ]; parsed.easing = 'ease-in'; break; case 'ease-in-out': if ( words[ i + 1 ] == 'up' || words[ i + 1 ] == 'down' ){ parsed.scale.direction = words[ i + 1 ]; parsed.scale.power = words[ i + 2 ]; parsed.easing = 'ease-in-out'; break; } parsed.move = words[ i + 1 ]; parsed.easing = 'ease-in-out'; break; case 'ease-out': if ( words[ i + 1 ] == 'up' || words[ i + 1 ] == 'down' ){ parsed.scale.direction = words[ i + 1 ]; parsed.scale.power = words[ i + 2 ]; parsed.easing = 'ease-out'; break; } parsed.move = words[ i + 1 ]; parsed.easing = 'ease-out'; break; case 'hustle': if ( words[ i + 1 ] == 'up' || words[ i + 1 ] == 'down' ){ parsed.scale.direction = words[ i + 1 ]; parsed.scale.power = words[ i + 2 ]; parsed.easing = 'cubic-bezier( 0.6, 0.2, 0.1, 1 )'; break; } parsed.move = words[ i + 1 ]; parsed.easing = 'cubic-bezier( 0.6, 0.2, 0.1, 1 )'; break; case 'over': parsed.over = words[ i + 1 ]; break; case 'flip': case 'pitch': parsed.rotate = parsed.rotate || {}; parsed.rotate.x = words[ i + 1 ]; break; case 'spin': case 'yaw': parsed.rotate = parsed.rotate || {}; parsed.rotate.y = words[ i + 1 ]; break; case 'roll': parsed.rotate = parsed.rotate || {}; parsed.rotate.z = words[ i + 1 ]; break; case 'reset': if ( words[ i - 1 ] == 'no' ){ parsed.reset = false; } else { parsed.reset = true; } break; case 'scale': parsed.scale = {}; if ( words[ i + 1 ] == 'up' || words[ i + 1 ] == 'down' ){ parsed.scale.direction = words[ i + 1 ]; parsed.scale.power = words[ i + 2 ]; break; } parsed.scale.power = words[ i + 1 ]; break; case 'vFactor': case 'vF': parsed.vFactor = words[ i + 1 ]; break; case 'opacity': parsed.opacity = words[ i + 1 ]; break; default: return; } }); // Build default config object, then apply any keywords parsed from the // data-sr attribute. config = _extend( config, self.config ); config = _extend( config, parsed ); if ( config.enter === 'top' || config.enter === 'bottom' ){ config.axis = 'Y'; } else if ( config.enter === 'left' || config.enter === 'right' ){ config.axis = 'X'; } // Let’s make sure our our pixel distances are negative for top and left. // e.g. "enter top and move 25px" starts at 'top: -25px' in CSS. if ( config.enter === 'top' || config.enter === 'left' ){ config.move = '-' + config.move; } return config; }, // Generates styles based on an elements configuration property. // @param {object} elem — An object from self.elems. // @return {object} styleFactory: function( elem ){ var inline; var initial; var reset; var target; var transition; var cfg = elem.config; var duration = ( parseFloat( cfg.over ) + parseFloat( cfg.wait ) ) * 1000; // Want to disable delay on mobile devices? Uncomment the line below. // if ( self.isMobile() && self.config.mobile ) cfg.wait = 0; if ( elem.domEl.getAttribute('style') ){ inline = elem.domEl.getAttribute('style') + '; visibility: visible; '; } else { inline = 'visibility: visible; '; } transition = '-webkit-transition: -webkit-transform ' + cfg.over + ' ' + cfg.easing + ' ' + cfg.wait + ', opacity ' + cfg.over + ' ' + cfg.easing + ' ' + cfg.wait + '; ' + 'transition: transform ' + cfg.over + ' ' + cfg.easing + ' ' + cfg.wait + ', opacity ' + cfg.over + ' ' + cfg.easing + ' ' + cfg.wait + '; ' + '-webkit-perspective: 1000;' + '-webkit-backface-visibility: hidden;'; reset = '-webkit-transition: -webkit-transform ' + cfg.over + ' ' + cfg.easing + ' 0s, opacity ' + cfg.over + ' ' + cfg.easing + ' 0s; ' + 'transition: transform ' + cfg.over + ' ' + cfg.easing + ' 0s, opacity ' + cfg.over + ' ' + cfg.easing + ' 0s; ' + '-webkit-perspective: 1000; ' + '-webkit-backface-visibility: hidden; '; initial = 'transform:'; target = 'transform:'; build(); // Build again for webkit… initial += '-webkit-transform:'; target += '-webkit-transform:'; build(); return { transition: transition, initial: initial, target: target, reset: reset, inline: inline, duration: duration }; // Constructs initial and target styles. function build(){ if ( parseInt( cfg.move ) !== 0 ){ initial += ' translate' + cfg.axis + '(' + cfg.move + ')'; target += ' translate' + cfg.axis + '(0)'; } if ( parseInt( cfg.scale.power ) !== 0 ){ if ( cfg.scale.direction === 'up' ){ cfg.scale.value = 1 - ( parseFloat( cfg.scale.power ) * 0.01 ); } else if ( cfg.scale.direction === 'down' ){ cfg.scale.value = 1 + ( parseFloat( cfg.scale.power ) * 0.01 ); } initial += ' scale(' + cfg.scale.value + ')'; target += ' scale(1)'; } if ( cfg.rotate.x ){ initial += ' rotateX(' + cfg.rotate.x + ')'; target += ' rotateX(0)'; } if ( cfg.rotate.y ){ initial += ' rotateY(' + cfg.rotate.y + ')'; target += ' rotateY(0)'; } if ( cfg.rotate.z ){ initial += ' rotateZ(' + cfg.rotate.z + ')'; target += ' rotateZ(0)'; } initial += '; opacity: ' + cfg.opacity + '; '; target += '; opacity: 1; '; } }, getViewportH: function(){ var client = self.config.viewport['clientHeight']; var inner = window['innerHeight']; if ( self.config.viewport === window.document.documentElement ){ return ( client < inner ) ? inner : client; } return client; }, scrollY: function(){ if ( self.config.viewport === window.document.documentElement ){ return window.pageYOffset; } else { return self.config.viewport.scrollTop + self.config.viewport.offsetTop; } }, getOffset: function( el ){ var offsetTop = 0; var offsetLeft = 0; do { if ( !isNaN( el.offsetTop ) ){ offsetTop += el.offsetTop; } if ( !isNaN( el.offsetLeft ) ){ offsetLeft += el.offsetLeft; } } while ( el = el.offsetParent ); return { top: offsetTop, left: offsetLeft }; }, isElemInViewport: function( elem ){ var elHeight = elem.domEl.offsetHeight; var elTop = self.getOffset( elem.domEl ).top; var elBottom = elTop + elHeight; var vFactor = elem.config.vFactor || 0; return ( confirmBounds() || isPositionFixed() ); function confirmBounds(){ var top = elTop + elHeight * vFactor; var bottom = elBottom - elHeight * vFactor; var viewBottom = self.scrolled + self.getViewportH(); var viewTop = self.scrolled; return ( top < viewBottom ) && ( bottom > viewTop ); } function isPositionFixed(){ var el = elem.domEl; var style = el.currentStyle || window.getComputedStyle( el, null ); return style.position === 'fixed'; } }, isMobile: function(){ var agent = navigator.userAgent || navigator.vendor || window.opera; return (/(ipad|playbook|silk|android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test( agent )||/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( agent.substr( 0, 4 ))) ? true : false; }, isSupported: function(){ var sensor = document.createElement('sensor'); var cssPrefix = 'Webkit,Moz,O,'.split(','); var tests = ( 'transition ' + cssPrefix.join('transition,') ).split(','); for ( var i = 0; i < tests.length; i++ ){ if ( !sensor.style[tests[i]] === '' ){ return false; } } return true; }, destroy: function(){ var node = self.config.viewport; var query = Array.prototype.slice.call( node.querySelectorAll('[data-sr]:not([data-sr=""])') ); query.forEach(function( el ){ el.removeAttribute('data-sr'); }); } } // End of the scrollReveal prototype ======================================| _handler = function( e ){ if ( !self.blocked ){ self.blocked = true; self.scrolled = self.scrollY(); _requestAnimFrame(function(){ self.animate(); }); } } _extend = function( target, src ){ for ( var prop in src ){ if ( src.hasOwnProperty( prop ) ){ target[ prop ] = src[ prop ]; } } return target; } // RequestAnimationFrame polyfill. _requestAnimFrame = (function(){ return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function( callback ){ window.setTimeout( callback, 1000 / 60 ); }; }()); return scrollReveal; })( window ); return scrollReveal; }));