parrot-layout/polyfill/swipe-events.js

"use strict";
if (!self.window.hasOwnProperty('swipeEventsPolyfill')) {
    var SWIPE_TRESHOLD_1 = 120;
    var originX_1;
    self.window.addEventListener('mousedown', function (e) {
        originX_1 = e.pageX;
    });
    self.window.addEventListener('mousemove', function (e) {
        if (originX_1 === null) {
            return;
        }
        var diff = e.pageX - originX_1;
        if (diff > SWIPE_TRESHOLD_1) {
            document.body.dispatchEvent(new Event('swipe-right'));
            originX_1 += SWIPE_TRESHOLD_1;
        }
        else if (diff < -SWIPE_TRESHOLD_1) {
            document.body.dispatchEvent(new Event('swipe-left'));
            originX_1 -= SWIPE_TRESHOLD_1;
        }
    });
    self.window.addEventListener('mouseup', function (e) {
        originX_1 = null;
    });
    Object.defineProperty(self.window, 'swipeEventsPolyfill', {
        value: true,
    });
}