Lucadmin.github.io/swiped-events.js at master · Lucadmin/Lucadmin.github.io · GitHub

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/*!
 * swiped-events.js - v1.1.0
 * Pure JavaScript swipe events
 * https://github.com/john-doherty/swiped-events
 * @inspiration https://stackoverflow.com/questions/16348031/disable-scrolling-when-touch-moving-certain-element
 * @author John Doherty <www.johndoherty.info>
 * @license MIT
 */
!function (t, e) {
    "use strict";
    "function" != typeof t.CustomEvent && (t.CustomEvent = function (t, n) {
        n = n || {bubbles: !1, cancelable: !1, detail: void 0};
        var u = e.createEvent("CustomEvent");
        return u.initCustomEvent(t, n.bubbles, n.cancelable, n.detail), u
    }, t.CustomEvent.prototype = t.Event.prototype), e.addEventListener("touchstart", function (t) {
        if ("true" === t.target.getAttribute("data-swipe-ignore")) return;
        o = t.target, l = Date.now(), n = t.touches[0].clientX, u = t.touches[0].clientY, a = 0, i = 0
    }, !1), e.addEventListener("touchmove", function (t) {
        if (!n || !u) return;
        var e = t.touches[0].clientX, l = t.touches[0].clientY;
        a = n - e, i = u - l
    }, !1), e.addEventListener("touchend", function (t) {
        if (o !== t.target) return;
        var e = parseInt(o.getAttribute("data-swipe-threshold") || "20", 10),
            s = parseInt(o.getAttribute("data-swipe-timeout") || "500", 10), r = Date.now() - l, c = "";
        Math.abs(a) > Math.abs(i) ? Math.abs(a) > e && r < s && (c = a > 0 ? "swiped-left" : "swiped-right") : Math.abs(i) > e && r < s && (c = i > 0 ? "swiped-up" : "swiped-down");
        "" !== c && o.dispatchEvent(new CustomEvent(c, {bubbles: !0, cancelable: !0}));
        n = null, u = null, l = null
    }, !1);
    var n = null, u = null, a = null, i = null, l = null, o = null
}(window, document);