scroll-converter.min.js

/*
scrollConverter 1.0.4
https://github.com/koggdal/scroll-converter

Copyright 2011–2020 Johannes Koggdal (http://koggdal.com/)
Developed for BombayWorks (http://bombayworks.com/)

Released under MIT license
*/

window.scrollConverter=function(e,t,n){var o,r,a=t.documentElement,l=!1,i=!1,s=!1,c=function(){var t=!1;try{var n=Object.defineProperty({},"passive",{get:function(){t=!0}});e.addEventListener("test",null,n),e.removeEventListener("test",null,n)}catch(e){}return t},v=function(n){var o,r="scroll"+(n=n.toUpperCase()),a="scroll"+("X"===n?"Left":"Top");return e["page"+n+"Offset"]||e[r]||("number"==typeof(o=t.documentElement||t.body.parentNode)[a]?o:t.body)[a]},d=function(n,i){if(o=function(o){if(o=o||e.event,!1===function(n,o,r){return!l||(i=0,v=(a?a.offsetWidth:0)||0,d=t.body.scrollWidth||0,u=a?a.clientWidth:0,f=Math.max(v,d)-u,Math.abs(o.wheelDeltaX)>=Math.abs(o.wheelDeltaY)||Math.abs(o.deltaX)>=Math.abs(o.deltaY)||("deltaY"in o?i=-10*o.deltaY:o.detail?i=-240*o.detail:o.wheelDelta&&(i=5*o.wheelDelta),s=i/120*10,(c=n.x-s)>=0&&c<=f?(n.x=c,n.setByScript=!0,e.scrollTo(n.x,n.y)):0!==n.x&&n.x!==f&&(n.x=c>f?f:0,n.setByScript=!0,e.scrollTo(n.x,n.y)),"function"==typeof r&&r(n),!1));var i,s,c,v,d,u,f}(n,o,i)){if(!o.preventDefault||!o.stopPropagation)return!1;o.preventDefault(),o.stopPropagation()}},r=function(){n.setByScript||(n.x=v("x"),n.y=v("y")),n.setByScript=!1},e.addEventListener){var s=!!c()&&{capture:!1,passive:!1};"onwheel"in e?e.addEventListener("wheel",o,s):"onmousewheel"in e?e.addEventListener("mousewheel",o,s):e.addEventListener("DOMMouseScroll",o,s),e.addEventListener("scroll",r,s)}else t.attachEvent("onmousewheel",o),e.attachEvent("onscroll",r)},u=function(e){return e.preventDefault(),e.stopPropagation(),!1};return{activate:function(t){if(l=!0,!s){d({x:0,y:0},t),s=!0}if(i){if(e.addEventListener){var n=!c()||{capture:!0,passive:!1};e.removeEventListener("scroll",u,n)}else e.detachEvent("onscroll",u);i=!1}},deactivate:function(){l=!1,s&&(!function(){if(o||r)if(e.removeEventListener){var n=!!c()&&{capture:!1,passive:!1};"onwheel"in e?e.removeEventListener("wheel",o,n):"onmousewheel"in e?e.removeEventListener("mousewheel",o,n):e.removeEventListener("DOMMouseScroll",o,n),e.removeEventListener("scroll",r,n)}else t.detachEvent("onmousewheel",o),e.detachEvent("onscroll",r)}(),s=!1)},deactivateAllScrolling:function(){if(l=!1,i=!0,e.addEventListener){var t=!c()||{capture:!0,passive:!1};e.addEventListener("scroll",u,t)}else e.attachEvent("onscroll",u)}}}(window,document);