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YouTube Video Resize Fix

此 Userscript 可以解决视频大小变形问题。请将它与其他Userstyles / Userscripts一起使用。

当前为 2023-05-24 提交的版本，查看 最新版本。

  1. /*
  2.  
  3. MIT License
  4.  
  5. Copyright 2022 CY Fung
  6.  
  7. Permission is hereby granted, free of charge, to any person obtaining a copy
  8. of this software and associated documentation files (the "Software"), to deal
  9. in the Software without restriction, including without limitation the rights
  10. to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11. copies of the Software, and to permit persons to whom the Software is
  12. furnished to do so, subject to the following conditions:
  13.  
  14. The above copyright notice and this permission notice shall be included in all
  15. copies or substantial portions of the Software.
  16.  
  17. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18. IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19. FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20. AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21. LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22. OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23. SOFTWARE.
  24.  
  25. */
  26. // ==UserScript==
  27. // @name                YouTube Video Resize Fix
  28. // @name:ja             YouTube Video Resize Fix
  29. // @name:zh-TW          YouTube Video Resize Fix
  30. // @name:zh-CN          YouTube Video Resize Fix
  31. // @version             0.3.0
  32. // @description         This Userscript can fix the video sizing issue. Please use it with other Userstyles / Userscripts.
  33. // @description:ja      この Userscript は、動画のサイズ変更の問題を修正できます。 他のユーザースタイル・ユーザースクリプトと合わせてご利用ください。
  34. // @description:zh-TW   此 Userscript 可以解決影片大小變形問題。 請將它與其他Userstyles / Userscripts一起使用。
  35. // @description:zh-CN   此 Userscript 可以解决视频大小变形问题。请将它与其他Userstyles / Userscripts一起使用。
  36. // @namespace           http://tampermonkey.net/
  37. // @author              CY Fung
  38. // @license             MIT License
  39. // @supportURL          https://github.com/cyfung1031/userscript-supports
  40. // @run-at              document-start
  41. // @match               https://www.youtube.com/*
  42. // @icon                https://github.com/cyfung1031/userscript-supports/raw/main/icons/youtube-video-resize-fix.png?v1
  43. // @grant               none
  44. // @unwrap
  45. // @allFrames
  46. // @inject-into page
  47. // ==/UserScript==
  48.  
  49. /* jshint esversion:8 */
  50.  
  51. (function () {
  52.   'use strict';
  53.   const elements = {}
  54.   let rid1 = 0
  55.   let rid2 = 0
  56.   /** @type {MutationObserver | null} */
  57.   let attrObserver = null
  58.   /** @type {ResizeObserver | null} */
  59.   let resizeObserver = null
  60.   let isHTMLAttrApplied = false
  61.   const core = {
  62.     begin() {
  63.       document.addEventListener('yt-player-updated', core.hanlder, true)
  64.       document.addEventListener('ytd-navigate-finish', core.hanlder, true)
  65.     },
  66.     hanlder() {
  67.       rid1++
  68.       if (rid1 > 1e9) rid1 = 9
  69.       const tid = rid1
  70.       window.requestAnimationFrame(() => {
  71.         if (tid !== rid1) return
  72.         core.runner()
  73.       })
  74.     },
  75.     async runner() {
  76.       if (!location.href.startsWith('https://www.youtube.com/watch')) return
  77.  
  78.       elements.ytdFlexy = document.querySelector('ytd-watch-flexy')
  79.       elements.video = document.querySelector('ytd-watch-flexy #movie_player video')
  80.       if (elements.ytdFlexy && elements.video) { } else return
  81.       elements.moviePlayer = elements.video.closest('#movie_player')
  82.       if (!elements.moviePlayer) return
  83.  
  84.       // resize Video
  85.       let { ytdFlexy } = elements;
  86.       if (!ytdFlexy.ElYTL) {
  87.         ytdFlexy.ElYTL = 1;
  88.         ytdFlexy.calculateNormalPlayerSize_ = core.resizeFunc(ytdFlexy.calculateNormalPlayerSize_, 1);
  89.         ytdFlexy.calculateCurrentPlayerSize_ = core.resizeFunc(ytdFlexy.calculateCurrentPlayerSize_, 0);
  90.       }
  91.       ytdFlexy = null
  92.  
  93.       // when video is fetched
  94.       elements.video.removeEventListener('canplay', core.triggerResizeDelayed, false)
  95.       elements.video.addEventListener('canplay', core.triggerResizeDelayed, false)
  96.  
  97.       // when video is resized
  98.       if (resizeObserver) {
  99.         resizeObserver.disconnect()
  100.         resizeObserver = null
  101.       }
  102.       if (typeof ResizeObserver === 'function') {
  103.         resizeObserver = new ResizeObserver(core.triggerResizeDelayed);
  104.         resizeObserver.observe(elements.moviePlayer)
  105.       }
  106.  
  107.       // MutationObserver:[collapsed] @ ytd-live-chat-frame#chat
  108.       if (attrObserver) {
  109.         attrObserver.takeRecords()
  110.         attrObserver.disconnect()
  111.         attrObserver = null
  112.       }
  113.       let chat = document.querySelector('ytd-watch-flexy ytd-live-chat-frame#chat')
  114.       if (chat) {
  115.         // resize due to DOM update
  116.         attrObserver = new MutationObserver(core.triggerResizeDelayed);
  117.         attrObserver.observe(chat, { attributes: true, attributeFilter: ["collapsed"] });
  118.         chat = null
  119.       }
  120.  
  121.       // resize on idle
  122.       core.triggerResizeDelayed()
  123.     },
  124.     resizeFunc(originalFunc, kb) {
  125.       return function () {
  126.         rid2++
  127.         if (!isHTMLAttrApplied) {
  128.           isHTMLAttrApplied = true
  129.           Promise.resolve(0).then(() => {
  130.             document.documentElement.classList.add('youtube-video-resize-fix')
  131.           }).catch(console.warn)
  132.         }
  133.         if (document.fullscreenElement === null) {
  134.  
  135.           // calculateCurrentPlayerSize_ shall be always return NaN to make correct positioning of toolbars
  136.           if (!kb) return { width: NaN, height: NaN }
  137.  
  138.           let ret = core.calculateSize();
  139.           if (ret.height > 0 && ret.width > 0) {
  140.             return ret
  141.           }
  142.         }
  143.         return originalFunc.apply(this, arguments)
  144.       };
  145.     },
  146.     calculateSize_() {
  147.       const { moviePlayer, video } = elements
  148.       const rect1 = { width: video.videoWidth, height: video.videoHeight } // native values independent of css rules
  149.       if (rect1.width > 0 && rect1.height > 0) {
  150.         const rect2 = moviePlayer.getBoundingClientRect()
  151.         const aspectRatio = rect1.width / rect1.height
  152.         let h2 = rect2.width / aspectRatio
  153.         let w2 = rect2.height * aspectRatio
  154.         return { rect2, h2, w2 }
  155.       }
  156.       return null
  157.     },
  158.     calculateSize() {
  159.       let rs = core.calculateSize_()
  160.       if (!rs) return { width: NaN, height: NaN }
  161.       const { rect2, h2, w2 } = rs
  162.       if (h2 > rect2.height) {
  163.         return { width: w2, height: rect2.height }
  164.       } else {
  165.         return { width: rect2.width, height: h2 }
  166.       }
  167.     },
  168.     triggerResizeDelayed() {
  169.       rid2++
  170.       if (rid2 > 1e9) rid2 = 9
  171.       const tid = rid2
  172.       window.requestAnimationFrame(() => {
  173.         if (tid !== rid2) return
  174.         let { ytdFlexy } = elements
  175.         let r = false
  176.         const windowSize_ = (ytdFlexy || 0).windowSize_
  177.         if (windowSize_ && typeof ytdFlexy.onWindowResized_ === 'function') {
  178.           try {
  179.             ytdFlexy.onWindowResized_(windowSize_)
  180.             r = true
  181.           } catch (e) { }
  182.         }
  183.         if (!r) window.dispatchEvent(new Event('resize'))
  184.       })
  185.     }
  186.   };
  187.   core.begin();
  188.  
  189.  
  190.  
  191.  
  192.  
  193.  
  194.  
  195.   // YouTube Watch Page Reflect (WPR)
  196.  
  197.  
  198.  
  199.   // This script enhances the functionality of YouTube pages by reflecting changes in the page state.
  200.  
  201.   (async function youTubeWPR() {
  202.  
  203.     // A WeakSet to keep track of elements being monitored for mutations.
  204.     const monitorWeakSet = new WeakSet();
  205.  
  206.     // Function to reflect the current state of the YouTube page.
  207.     function _reflect() {
  208.       const youtubeWpr = document.documentElement.getAttribute("youtube-wpr");
  209.       let s = '';
  210.  
  211.       // Check if the current page is the video watch page.
  212.       if (location.pathname === '/watch') {
  213.         let watch = document.querySelector("ytd-watch-flexy");
  214.         let chat = document.querySelector("ytd-live-chat-frame#chat");
  215.  
  216.         if (watch) {
  217.           // Determine the state of the chat and video player on the watch page and generate a state string.
  218.           s += !chat ? 'h0' : (chat.hasAttribute('collapsed') || !document.querySelector('iframe#chatframe')) ? 'h1' : 'h2';
  219.           s += watch.hasAttribute('is-two-columns_') ? 's' : 'S';
  220.           s += watch.hasAttribute('fullscreen') ? 'F' : 'f';
  221.           s += watch.hasAttribute('theater') ? 'T' : 't';
  222.         }
  223.       }
  224.  
  225.       // Update the reflected state if it has changed.
  226.       if (s !== youtubeWpr) {
  227.         document.documentElement.setAttribute("youtube-wpr", s);
  228.       }
  229.     }
  230.  
  231.     // Function to reflect changes in specific attributes of monitored elements.
  232.     function reflect(nodeName, attrNames, forced) {
  233.       if (!forced) {
  234.         let skip = true;
  235.         for (const attrName of attrNames) {
  236.           if (nodeName === 'ytd-live-chat-frame') {
  237.             if (attrName === 'collapsed') skip = false;
  238.           } else if (nodeName === 'ytd-watch-flexy') {
  239.             if (attrName === 'is-two-columns_') skip = false;
  240.             else if (attrName === 'fullscreen') skip = false;
  241.             else if (attrName === 'theater') skip = false;
  242.           }
  243.         }
  244.         if (skip) return;
  245.       }
  246.  
  247.       // Log the mutated element and its attributes.
  248.       // console.log(nodeName, attrNames);
  249.  
  250.       // Call _reflect() to update the reflected state.
  251.       _reflect();
  252.     }
  253.  
  254.     // Callback function for the MutationObserver that tracks mutations in monitored elements.
  255.     function callback(mutationsList) {
  256.       const attrNames = new Set();
  257.       let nodeName = null;
  258.       for (const mutation of mutationsList) {
  259.         if (nodeName === null && mutation.target) nodeName = mutation.target.nodeName.toLowerCase();
  260.         attrNames.add(mutation.attributeName);
  261.       }
  262.       reflect(nodeName, attrNames, false);
  263.     }
  264.  
  265.     // Function to start monitoring an element for mutations.
  266.     function monitor(element) {
  267.       if (!element) return;
  268.       if (monitorWeakSet.has(element)) {
  269.         return;
  270.       }
  271.  
  272.       monitorWeakSet.add(element);
  273.  
  274.       const observer = new MutationObserver(callback);
  275.       observer.observe(element, { attributes: true });
  276.  
  277.       return 1;
  278.     }
  279.  
  280.     let timeout = 0;
  281.  
  282.     // Function to monitor relevant elements and update the reflected state.
  283.     let g = (forced) => {
  284.       let b = 0;
  285.       b = b | monitor(document.querySelector("ytd-watch-flexy"));
  286.       b = b | monitor(document.querySelector("ytd-live-chat-frame#chat"));
  287.       if (b || forced) {
  288.         _reflect();
  289.       }
  290.     }
  291.  
  292.     // Event handler function that triggers when the page finishes navigation or page data updates.
  293.     let eventHandlerFunc = async () => {
  294.       timeout = Date.now() + 800;
  295.       g(1);
  296.     }
  297.  
  298.     let loadState = 0;
  299.  
  300.     // Function to initialize the script and start monitoring the page.
  301.     async function actor() {
  302.       if (loadState === 0) {
  303.         if (!document.documentElement.hasAttribute("youtube-wpr")) {
  304.           loadState = 1;
  305.           document.documentElement.setAttribute("youtube-wpr", "");
  306.           document.addEventListener("yt-navigate-finish", eventHandlerFunc, false);
  307.           document.addEventListener("yt-page-data-updated", eventHandlerFunc, false);
  308.         } else {
  309.           loadState = -1;
  310.           document.removeEventListener("yt-page-data-fetched", actor, false);
  311.           return;
  312.         }
  313.       }
  314.       if (loadState === 1) {
  315.         timeout = Date.now() + 800;
  316.         // Function to continuously monitor elements and update the reflected state.
  317.         let pf = () => {
  318.           g(0);
  319.           if (Date.now() < timeout) requestAnimationFrame(pf);
  320.         };
  321.         pf();
  322.       }
  323.     }
  324.  
  325.     // Event listener that triggers when page data is fetched.
  326.     document.addEventListener("yt-page-data-fetched", actor, false);
  327.   })();
  328.  
  329.  
  330. })();