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YouTube ProgressBar Preserver

让你恒常地显示油管上的进度条(显示播放时间比例的红色条)。

当前为 2020-01-31 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        YouTube ProgressBar Preserver
  3. // @name:ja     YouTube ProgressBar Preserver
  4. // @name:zh-CN  YouTube ProgressBar Preserver
  5. // @description It preserves YouTube's progress bar always visible even if the controls are hidden.
  6. // @description:ja YouTubeのプログレスバー(再生時刻の割合を示す赤いバー)を、隠さず常に表示させるようにします。
  7. // @description:zh-CN 让你恒常地显示油管上的进度条(显示播放时间比例的红色条)。
  8. // @namespace   knoa.jp
  9. // @include     https://www.youtube.com/*
  10. // @version     0.10.1
  11. // @grant       none
  12. // ==/UserScript==
  13.  
  14. (function(){
  15.   const SCRIPTID = 'YouTubeProgressBarPreserver';
  16.   const SCRIPTNAME = 'YouTube ProgressBar Preserver';
  17.   const DEBUG = false;/*
  18. [update] 0.10.1
  19. fix for advertisements.
  20.  
  21. [todo]
  22. カスタマイズ(color, height, opacity, 各表示モードでのオンオフ)
  23. うっすら時刻表示オプションほしい？
  24.  
  25. [research]
  26. 広告時のバーがトランジションしない...
  27.  
  28. [memo]
  29. YouTubeによって隠されているときはオリジナルのバーは更新されないので、独自に作るほうがラク。
  30. 0.9完成後、youtube progressbar で検索したところすでに存在していることを発見＼(^o^)／
  31. https://addons.mozilla.org/ja/firefox/addon/progress-bar-for-youtube/
  32. カスタマイズできるしロード済みバッファにも対応するが、生放送に対応していない。プログレスが最低0.5秒単位でtransitionもない。
  33.   */
  34.   if(window === top && console.time) console.time(SCRIPTID);
  35.   const INTERVAL = 1000;/*for core.checkUrl*/
  36.   const STARTSWITH = [/*for core.checkUrl*/
  37.     'https://www.youtube.com/watch?v=',
  38.   ];
  39.   const RETRY = 10;
  40.   let site = {
  41.     targets: {
  42.       player: () => $('#movie_player'),
  43.       video: () => $('video[src]'),
  44.       time: () => $('.ytp-time-display'),
  45.     },
  46.     is: {
  47.       live: (time) => time.classList.contains('ytp-live'),
  48.     },
  49.   };
  50.   let html, elements = {}, timers = {};
  51.   let core = {
  52.     initialize: function(){
  53.       html = document.documentElement;
  54.       html.classList.add(SCRIPTID);
  55.       core.checkUrl();
  56.       core.addStyle();
  57.     },
  58.     checkUrl: function(){
  59.       let previousUrl = '';
  60.       timers.checkUrl = setInterval(function(){
  61.         if(document.hidden) return;
  62.         /* The page is visible, so... */
  63.         if(location.href === previousUrl) return;
  64.         else previousUrl = location.href;
  65.         /* The URL has changed, so... */
  66.         if(STARTSWITH.some(url => location.href.startsWith(url)) === false) return;
  67.         /* This page should be modified, so... */
  68.         core.ready();
  69.       }, INTERVAL);
  70.     },
  71.     ready: function(){
  72.       core.getTargets(site.targets, RETRY).then(() => {
  73.         log("I'm ready.");
  74.         core.appendBar();
  75.       });
  76.     },
  77.     appendBar: function(){
  78.       if(elements.bar && elements.bar.isConnected) return;
  79.       let bar = elements.bar = createElement(core.html.bar());
  80.       let progress = elements.progress = bar.firstElementChild;
  81.       elements.player.appendChild(bar);
  82.       core.observeTime(elements.time, bar);
  83.       core.observeVideo(elements.video, progress);
  84.     },
  85.     observeTime: function(time, bar){
  86.       let detect = function(time, bar){
  87.         if(site.is.live(time)) bar.classList.remove('active');
  88.         else bar.classList.add('active');
  89.       };
  90.       detect(time, bar);
  91.       let observer = observe(time, function(records){
  92.         detect(time, bar);
  93.       }, {attributes: true});
  94.     },
  95.     observeVideo: function(video, progress){
  96.       progress.style.transform = 'scaleX(0)';
  97.       video.addEventListener('timeupdate', function(e){
  98.         progress.style.transform = `scaleX(${video.currentTime / video.duration})`;
  99.       });
  100.     },
  101.     getTargets: function(targets, retry = 0){
  102.       const get = function(resolve, reject, retry){
  103.         for(let i = 0, keys = Object.keys(targets), key; key = keys[i]; i++){
  104.           let selected = targets[key]();
  105.           if(selected){
  106.             if(selected.length) selected.forEach((s) => s.dataset.selector = key);
  107.             else selected.dataset.selector = key;
  108.             elements[key] = selected;
  109.           }else{
  110.             if(--retry < 0) return reject(log(`Not found: ${key}, I give up.`));
  111.             log(`Not found: ${key}, retrying... (left ${retry})`);
  112.             return setTimeout(get, 1000, resolve, reject, retry);
  113.           }
  114.         }
  115.         resolve();
  116.       };
  117.       return new Promise(function(resolve, reject){
  118.         get(resolve, reject, retry);
  119.       });
  120.     },
  121.     addStyle: function(name = 'style'){
  122.       if(core.html[name] === undefined) return;
  123.       let style = createElement(core.html[name]());
  124.       document.head.appendChild(style);
  125.       if(elements[name] && elements[name].isConnected) document.head.removeChild(elements[name]);
  126.       elements[name] = style;
  127.     },
  128.     html: {
  129.       bar: () => `<div id="${SCRIPTID}-bar"><div id="${SCRIPTID}-progress"></div></div>`,
  130.       style: () => `
  131.         <style type="text/css">
  132.           #${SCRIPTID}-bar{
  133.             --height: 3px;
  134.             --background: rgba(255,255,255,.2);
  135.             --color: #f00;
  136.             --ad-color: #fc0;
  137.             --transition-bar: opacity .25s cubic-bezier(0.0,0.0,0.2,1);
  138.             --transition-progress: transform .25s linear;
  139.             --z-index: 100;
  140.           }
  141.           #${SCRIPTID}-bar{
  142.             width: 100%;
  143.             height: var(--height);
  144.             background: var(--background);
  145.             position: absolute;
  146.             bottom: 0;
  147.             transition: var(--transition-bar);
  148.             opacity: 0;
  149.             z-index: var(--z-index);
  150.           }
  151.           #${SCRIPTID}-progress{
  152.             width: 100%;
  153.             height: var(--height);
  154.             background: var(--color);
  155.             transition: var(--transition-progress);
  156.             transform-origin: 0 0;
  157.           }
  158.           .ad-interrupting/*advertisement*/ #${SCRIPTID}-progress{
  159.             background: var(--ad-color);
  160.           }
  161.           .ytp-autohide #${SCRIPTID}-bar.active{
  162.             opacity: 1;
  163.           }
  164.           .ytp-ad-persistent-progress-bar-container/*YouTube offers progress bar only when an ad is showing, but it doesn't have transition animation*/{
  165.             display: none
  166.           }
  167.         </style>
  168.       `,
  169.     },
  170.   };
  171.   const setTimeout = window.setTimeout, clearTimeout = window.clearTimeout, setInterval = window.setInterval, clearInterval = window.clearInterval, requestAnimationFrame = window.requestAnimationFrame;
  172.   const alert = window.alert, confirm = window.confirm, getComputedStyle = window.getComputedStyle, fetch = window.fetch;
  173.   if(!('isConnected' in Node.prototype)) Object.defineProperty(Node.prototype, 'isConnected', {get: function(){return document.contains(this)}});
  174.   class Storage{
  175.     static key(key){
  176.       return (SCRIPTID) ? (SCRIPTID + '-' + key) : key;
  177.     }
  178.     static save(key, value, expire = null){
  179.       key = Storage.key(key);
  180.       localStorage[key] = JSON.stringify({
  181.         value: value,
  182.         saved: Date.now(),
  183.         expire: expire,
  184.       });
  185.     }
  186.     static read(key){
  187.       key = Storage.key(key);
  188.       if(localStorage[key] === undefined) return undefined;
  189.       let data = JSON.parse(localStorage[key]);
  190.       if(data.value === undefined) return data;
  191.       if(data.expire === undefined) return data;
  192.       if(data.expire === null) return data.value;
  193.       if(data.expire < Date.now()) return localStorage.removeItem(key);
  194.       return data.value;
  195.     }
  196.     static delete(key){
  197.       key = Storage.key(key);
  198.       delete localStorage.removeItem(key);
  199.     }
  200.     static saved(key){
  201.       key = Storage.key(key);
  202.       if(localStorage[key] === undefined) return undefined;
  203.       let data = JSON.parse(localStorage[key]);
  204.       if(data.saved) return data.saved;
  205.       else return undefined;
  206.     }
  207.   }
  208.   const $ = function(s, f){
  209.     let target = document.querySelector(s);
  210.     if(target === null) return null;
  211.     return f ? f(target) : target;
  212.   };
  213.   const $$ = function(s){return document.querySelectorAll(s)};
  214.   const animate = function(callback, ...params){requestAnimationFrame(() => requestAnimationFrame(() => callback(...params)))};
  215.   const wait = function(ms){return new Promise((resolve) => setTimeout(resolve, ms))};
  216.   const createElement = function(html = '<span></span>'){
  217.     let outer = document.createElement('div');
  218.     outer.innerHTML = html;
  219.     return outer.firstElementChild;
  220.   };
  221.   const observe = function(element, callback, options = {childList: true, attributes: false, characterData: false, subtree: false}){
  222.     let observer = new MutationObserver(callback.bind(element));
  223.     observer.observe(element, options);
  224.     return observer;
  225.   };
  226.   const secondsToTime = function(seconds){
  227.     let floor = Math.floor, zero = (s) => s.toString().padStart(2, '0');
  228.     let h = floor(seconds/3600), m = floor(seconds/60)%60, s = floor(seconds%60);
  229.     if(h) return h + '時間' + zero(m) + '分' + zero(s) + '秒';
  230.     if(m) return m + '分' + zero(s) + '秒';
  231.     if(s) return s + '秒';
  232.   };
  233.   const timeToSeconds = function(time){
  234.     let parts = time.split(':').map(p => parseFloat(p));
  235.     switch(parts.length){
  236.       case(1): return parts[0];
  237.       case(2): return parts[0]*60 + parts[1];
  238.       case(3): return parts[0]*60*60 + parts[1]*60 + parts[2];
  239.       default: return 0;
  240.     }
  241.   };
  242.   const atLeast = function(min, b){
  243.     return Math.max(min, b);
  244.   };
  245.   const atMost = function(a, max){
  246.     return Math.min(a, max);
  247.   };
  248.   const between = function(min, b, max){
  249.     return Math.min(Math.max(min, b), max);
  250.   };
  251.   const toMetric = function(number, decimal = 1){
  252.     switch(true){
  253.       case(number < 1e3 ): return (number);
  254.       case(number < 1e6 ): return (number/1e3 ).toFixed(decimal) + 'K';
  255.       case(number < 1e9 ): return (number/1e6 ).toFixed(decimal) + 'M';
  256.       case(number < 1e12): return (number/1e9 ).toFixed(decimal) + 'G';
  257.       default:             return (number/1e12).toFixed(decimal) + 'T';
  258.     }
  259.   };
  260.   const log = function(){
  261.     if(!DEBUG) return;
  262.     let l = log.last = log.now || new Date(), n = log.now = new Date();
  263.     let error = new Error(), line = log.format.getLine(error), callers = log.format.getCallers(error);
  264.     //console.log(error.stack);
  265.     console.log(
  266.       (SCRIPTID || '') + ':',
  267.       /* 00:00:00.000  */ n.toLocaleTimeString() + '.' + n.getTime().toString().slice(-3),
  268.       /* +0.000s       */ '+' + ((n-l)/1000).toFixed(3) + 's',
  269.       /* :00           */ ':' + line,
  270.       /* caller.caller */ (callers[2] ? callers[2] + '() => ' : '') +
  271.       /* caller        */ (callers[1] || '') + '()',
  272.       ...arguments
  273.     );
  274.   };
  275.   log.formats = [{
  276.       name: 'Firefox Scratchpad',
  277.       detector: /MARKER@Scratchpad/,
  278.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  279.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  280.     }, {
  281.       name: 'Firefox Console',
  282.       detector: /MARKER@debugger/,
  283.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  284.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  285.     }, {
  286.       name: 'Firefox Greasemonkey 3',
  287.       detector: /\/gm_scripts\//,
  288.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  289.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  290.     }, {
  291.       name: 'Firefox Greasemonkey 4+',
  292.       detector: /MARKER@user-script:/,
  293.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 500,
  294.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  295.     }, {
  296.       name: 'Firefox Tampermonkey',
  297.       detector: /MARKER@moz-extension:/,
  298.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 6,
  299.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  300.     }, {
  301.       name: 'Chrome Console',
  302.       detector: /at MARKER \(<anonymous>/,
  303.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
  304.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(<anonymous>)/gm),
  305.     }, {
  306.       name: 'Chrome Tampermonkey',
  307.       detector: /at MARKER \(chrome-extension:.*?\/userscript.html\?id=/,
  308.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1] - 6,
  309.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
  310.     }, {
  311.       name: 'Chrome Extension',
  312.       detector: /at MARKER \(chrome-extension:/,
  313.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
  314.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
  315.     }, {
  316.       name: 'Edge Console',
  317.       detector: /at MARKER \(eval/,
  318.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1],
  319.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(eval)/gm),
  320.     }, {
  321.       name: 'Edge Tampermonkey',
  322.       detector: /at MARKER \(Function/,
  323.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1] - 4,
  324.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(Function)/gm),
  325.     }, {
  326.       name: 'Safari',
  327.       detector: /^MARKER$/m,
  328.       getLine: (e) => 0,/*e.lineが用意されているが最終呼び出し位置のみ*/
  329.       getCallers: (e) => e.stack.split('\n'),
  330.     }, {
  331.       name: 'Default',
  332.       detector: /./,
  333.       getLine: (e) => 0,
  334.       getCallers: (e) => [],
  335.     }];
  336.   log.format = log.formats.find(function MARKER(f){
  337.     if(!f.detector.test(new Error().stack)) return false;
  338.     //console.log('////', f.name, 'wants', 0/*line*/, '\n' + new Error().stack);
  339.     return true;
  340.   });
  341.   const time = function(label){
  342.     if(!DEBUG) return;
  343.     const BAR = '|', TOTAL = 100;
  344.     switch(true){
  345.       case(label === undefined):/* time() to output total */
  346.         let total = 0;
  347.         Object.keys(time.records).forEach((label) => total += time.records[label].total);
  348.         Object.keys(time.records).forEach((label) => {
  349.           console.log(
  350.             BAR.repeat((time.records[label].total / total) * TOTAL),
  351.             label + ':',
  352.             (time.records[label].total).toFixed(3) + 'ms',
  353.             '(' + time.records[label].count + ')',
  354.           );
  355.         });
  356.         time.records = {};
  357.         break;
  358.       case(!time.records[label]):/* time('label') to create and start the record */
  359.         time.records[label] = {count: 0, from: performance.now(), total: 0};
  360.         break;
  361.       case(time.records[label].from === null):/* time('label') to re-start the lap */
  362.         time.records[label].from = performance.now();
  363.         break;
  364.       case(0 < time.records[label].from):/* time('label') to add lap time to the record */
  365.         time.records[label].total += performance.now() - time.records[label].from;
  366.         time.records[label].from = null;
  367.         time.records[label].count += 1;
  368.         break;
  369.     }
  370.   };
  371.   time.records = {};
  372.   core.initialize();
  373.   if(window === top && console.timeEnd) console.timeEnd(SCRIPTID);
  374. })();

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