☰

YouTube Always show progress bar - Forked

Always show progress bar

目前为 2022-10-25 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         YouTube Always show progress bar - Forked
  3. // @version      2022.10.25
  4. // @author       Xiao
  5. // @match        *://www.youtube.com/*
  6. // @allFrames    true
  7. // @grant        unsafeWindow
  8. // @namespace https://greasyfork.org/users/5802
  9. // @description Always show progress bar
  10. // ==/UserScript==
  11.  
  12. //original: https://greasyfork.org/en/scripts/30046-youtube-always-show-progress-bar
  13.  
  14. let css = `
  15.   .ytp-autohide .ytp-chrome-bottom {
  16.     opacity: 1 !important;
  17.   }
  18.  
  19.   .ytp-autohide .ytp-chrome-bottom .ytp-progress-bar-container[alwaysshow="true"] {
  20.     bottom:-1px;
  21.   }
  22.  
  23.   .ytp-autohide .ytp-chrome-bottom > :not(.ytp-progress-bar-container[alwaysshow="true"]) {
  24.     display: none;
  25.   }
  26. `;
  27.  
  28. let style = document.createElement('style');
  29. style.textContent = css;
  30. document.head.appendChild(style);
  31.  
  32. let eventHandlers = [];
  33.  
  34. let timeupdateListener;
  35. let progressListener;
  36. let video;
  37.  
  38. setTimeout(run, 2000);
  39.  
  40. addEventListener('yt-navigate-finish', function() {
  41.   video = document.querySelector('video');
  42.   if (video) {
  43.     eventHandlers[0]?.removeEventListener('timeupdate', eventHandlers[1]);
  44.     eventHandlers[0]?.removeEventListener('progress', eventHandlers[2]);
  45.     setTimeout(run, 2000);
  46.   }
  47. });
  48.  
  49. function run () {
  50.   if (document.querySelector('#movie_player.ad-showing')) {
  51.     setTimeout(run, 2000);
  52.     return;
  53.   }
  54.  
  55.   video = document.querySelector('video');
  56.   if (/*!video?.src || */!document.querySelector('.html5-video-player:not(.addedupdateevents)'))
  57.     return;
  58.  
  59.   let videoData = Object.values((unsafeWindow.ytPubsubPubsubInstance.i/*embed*/ || unsafeWindow.ytPubsubPubsubInstance.j/*normal*/ || unsafeWindow.ytPubsubPubsubInstance.subscriptions_/*navigation*/).find(exportFunction(a => a?.player, unsafeWindow)).player.app.Ib).find(exportFunction(a => a?.videoData, unsafeWindow)).videoData;
  60.   document.querySelector('.ytp-progress-bar-container').setAttribute('alwaysshow', !videoData.isLivePlayback);
  61.  
  62.   video.className += ' addedupdateevents';
  63.   let player = document.getElementById('movie_player');
  64.   let progressbars = document.querySelectorAll('.ytp-play-progress');
  65.   let loadbars = document.querySelectorAll('.ytp-load-progress');
  66.  
  67.   let chap = videoData.multiMarkersPlayerBarRenderer?.markersMap[0].value.chapters;
  68.  
  69.   if (chap?.length) {
  70.     let chars = [];
  71.     let cap;
  72.     let capstart;
  73.     let capduration;
  74.     let lastusedcapprog;
  75.     let lastusedcapbuf;
  76.  
  77.     for (let i = 0; i < chap.length; i++) {
  78.       chars.push(chap[i].chapterRenderer.timeRangeStartMillis / 1000);
  79.     }
  80.  
  81.     timeupdateListener = () => {
  82.       if (!player.classList.contains('ytp-autohide'))
  83.         return;
  84.  
  85.       for (let i = 0; i < chars.length; i++) {
  86.         let ts = chars[i];
  87.         if (ts < video.currentTime  || !capduration) {
  88.           cap = i;
  89.           capstart = ts;
  90.           capduration = ((chars[i + 1] ? chars[i + 1] : video.duration) - ts);
  91.         } else {
  92.           break;
  93.         }
  94.       }
  95.  
  96.       if (cap > lastusedcapprog)
  97.         progressbars[lastusedcapprog].style.transform = 'scaleX(1)';
  98.  
  99.       lastusedcapprog = cap;
  100.  
  101.       progressbars[cap].style.transform = 'scaleX(' + ((video.currentTime - capstart) / capduration) + ')';
  102.     };
  103.     video.addEventListener('timeupdate', timeupdateListener);
  104.  
  105.     progressListener = () => {
  106.       if (!player.classList.contains('ytp-autohide') || !video.buffered.length)
  107.         return;
  108.  
  109.       let buff = video.buffered.end(video.buffered.length - 1);
  110.  
  111.       for (let i = 0; i < chars.length; i++) {
  112.         let ts = chars[i];
  113.         if (ts < buff  || !capduration) {
  114.           cap = i;
  115.           capstart = ts;
  116.           capduration = ((chars[i + 1] ? chars[i + 1] : video.duration) - ts);
  117.         } else {
  118.           break;
  119.         }
  120.       }
  121.  
  122.       if (cap > lastusedcapbuf)
  123.         loadbars[lastusedcapbuf].style.transform = 'scaleX(1)';
  124.  
  125.       lastusedcapbuf = cap;
  126.  
  127.       loadbars[cap].style.transform = 'scaleX(' + ((buff - capstart) / capduration) + ')';
  128.     };
  129.     video.addEventListener('progress', progressListener);
  130.     eventHandlers = [video, timeupdateListener, progressListener];
  131.   } else {
  132.     timeupdateListener = function () {
  133.       if (player.classList.contains('ytp-autohide'))
  134.         progressbars[0].style.transform = 'scaleX(' + (video.currentTime / video.duration) + ')';
  135.     };
  136.     video.addEventListener('timeupdate', timeupdateListener);
  137.  
  138.     progressListener = function () {
  139.       if (player.classList.contains('ytp-autohide') && video.buffered.length)
  140.         loadbars[0].style.transform = 'scaleX(' + (video.buffered.end(video.buffered.length - 1) / video.duration) + ')';
  141.     };
  142.     video.addEventListener('progress', progressListener);
  143.     eventHandlers = [video, timeupdateListener, progressListener];
  144.   }
  145. }