哔哩哔哩触控板滚动反转

优化 b 站视频音量调节在触控板上的体验。使用此脚本后, 在 b 站视频全屏界面中,使用触控板向下滚动将减少音量。(未安装时为增大)

当前为 2023-03-10 提交的版本,查看 最新版本

// ==UserScript==
// @name         哔哩哔哩触控板滚动反转
// @namespace    http://zhangmaimai.com/
// @version      2.0.3
// @author       MaxChang3
// @description  优化 b 站视频音量调节在触控板上的体验。使用此脚本后,        在 b 站视频全屏界面中,使用触控板向下滚动将减少音量。(未安装时为增大)
// @license      MIT
// @icon         https://www.bilibili.com/favicon.ico
// @match        https://www.bilibili.com/bangumi/play/*
// @match        https://www.bilibili.com/video/*
// @run-at       document-start
// ==/UserScript==

(function() {
  "use strict";
  const isFullScreen = () => !!document.fullscreenElement;
  const isTrackpad = (wheelEvent) => wheelEvent.deltaY && Math.abs(wheelEvent.deltaY) < 100;
  const orgin = EventTarget.prototype.addEventListener;
  const applyHandler = (target, thisArg, args) => {
    const [type, evt, ...rest] = args;
    if (thisArg instanceof HTMLElement || !(evt instanceof Function) || type !== "mousewheel" && type !== "wheel")
      return Reflect.apply(target, thisArg, args);
    const evtWrapper = (e) => {
      if (!isFullScreen() || !isTrackpad(e))
        return Reflect.apply(evt, thisArg, [e]);
      const proxy = new Proxy(e, {
        get: (obj, prop) => typeof prop === "symbol" || prop !== "wheelDelta" ? Reflect.get(obj, prop) : Reflect.get(obj, "deltaY") * 10
        // Considering that `wheelDelta` is deprecated
      });
      return Reflect.apply(evt, thisArg, [proxy]);
    };
    return Reflect.apply(target, thisArg, [type, evtWrapper, ...rest]);
  };
  EventTarget.prototype.addEventListener = new Proxy(orgin, { apply: applyHandler });
})();