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| // ==UserScript== | |
| // @name Twitch Sidebar Thumbnail Preview | |
| // @name:de Twitch Seitenleiste Vorschaubild | |
| // @version 1.0.2 | |
| // @description Hover over Channel in the Sidebar to see a Thumbnail Preview of the Stream on Twitch | |
| // @description:de Bewege den Mauszeiger über einen Kanal in der Seitenleiste, um ein Vorschaubild des Streams zu sehen auf Twitch | |
| // @icon https://static.twitchcdn.net/assets/favicon-32-e29e246c157142c94346.png | |
| // @author TalkLounge (https://github.com/TalkLounge) | |
| // @namespace https://github.com/TalkLounge/twitch-sidebar-preview | |
| // @license MIT | |
| // @match https://www.twitch.tv/* | |
| // @downloadURL https://update.greasyfork.org/scripts/475701/Twitch%20Sidebar%20Thumbnail%20Preview.user.js | |
| // @updateURL https://update.greasyfork.org/scripts/475701/Twitch%20Sidebar%20Thumbnail%20Preview.meta.js | |
| // ==/UserScript== | |
| (function () { | |
| 'use strict'; | |
| let cache = {}, eventCount = 0; | |
| function newElement(tagName, attributes, content) { | |
| var tag = document.createElement(tagName); | |
| for (var key in attributes || {}) { | |
| if (attributes[key] !== undefined && attributes[key] !== null) { | |
| tag.setAttribute(key, attributes[key]); | |
| } | |
| } | |
| tag.innerHTML = content || ""; | |
| return tag; | |
| } | |
| async function addThumbnail(element, eventCountLocal) { | |
| if (element.querySelector(".side-nav-card__avatar--offline")) { // Channel is offline | |
| return; | |
| } | |
| let dialog, timeoutCount = 0; | |
| do { // Wait until Popup is ready | |
| await new Promise(r => setTimeout(r, 10)); | |
| timeoutCount++; | |
| if (timeoutCount > 50 || eventCountLocal != eventCount) { // Dialog timeout or newer mouseenter event called | |
| return; | |
| } | |
| dialog = document.querySelector(".tw-dialog-layer .online-side-nav-channel-tooltip__body p[class*=CoreText]:not([title])"); | |
| } while (!dialog); | |
| console.log('dialog', dialog) | |
| dialog.parentNode.style.width = "380px"; | |
| dialog.parentNode.querySelector("img")?.remove(); | |
| const titleElement = dialog.parentNode.querySelector("[title]") | |
| console.log('titleElement', titleElement) | |
| const channel = titleElement.textContent.toLowerCase().split(' ')[0]; | |
| console.log('channel', channel) | |
| if (!cache[channel] || Date.now() - cache[channel] >= 30 * 1000) { // Cache Thumbnails for half minute | |
| cache[channel] = Date.now(); | |
| } | |
| const img = newElement("img", { src: `https://static-cdn.jtvnw.net/previews-ttv/live_user_${channel}-440x248.jpg?t=${cache[channel]}` }); | |
| dialog.parentNode.prepend(img); | |
| img.style.borderRadius = '4px'; | |
| img.style.margin = '6px 0'; | |
| // img.style.maxWidth = "360px"; | |
| console.log('img', img) | |
| } | |
| function addHoverEvent(element) { | |
| if (element.classList.contains("tsp")) { // Already added | |
| return; | |
| } | |
| element.classList.add("tsp"); | |
| element.addEventListener("mouseenter", () => { | |
| eventCount++; | |
| addThumbnail(element, eventCount); | |
| }); | |
| } | |
| function init() { | |
| const uls = document.querySelectorAll("nav .tw-transition-group"); | |
| if (!uls.length || !uls[0].children.length) { // Page not ready | |
| return; | |
| } | |
| if (interval) { | |
| clearInterval(interval); | |
| interval = undefined; | |
| window.setInterval(init, 5000); | |
| } | |
| for (let i = 0; i < uls.length; i++) { | |
| if (uls[i].classList.contains("tsp")) { // Already observing channel list | |
| continue; | |
| } | |
| uls[i].classList.add("tsp"); | |
| for (let j = 0; j < uls[i].children.length; j++) { | |
| addHoverEvent(uls[i].children[j]); | |
| } | |
| const observer = new MutationObserver((mutationList) => { // Check for new channels in channel list added by click on show more | |
| for (const mutation of mutationList) { | |
| for (let j = 0; j < mutation.addedNodes.length; j++) { | |
| addHoverEvent(mutation.addedNodes[j]); | |
| } | |
| } | |
| }); | |
| observer.observe(uls[i], { childList: true }); | |
| } | |
| } | |
| let interval = window.setInterval(init, 500); | |
| })(); |
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