Twitch截圖工具，支援截圖按鈕、快捷鍵截圖、連拍功能，自定義快捷鍵、連拍間隔設定、中英菜單切換
// ==UserScript==
// @name Twitch Screenshot Helper
// @name:zh-TW Twitch 截圖助手
// @name:zh-CN Twitch 截图助手
// @namespace http://tampermonkey.net/
// @version 2.6
// @description Twitch screen capture tool with support for hotkeys, burst mode, customizable shortcuts, capture interval, and English/Chinese menu switching.
// @description:zh-TW Twitch截圖工具，支援截圖按鈕、快捷鍵截圖、連拍功能，自定義快捷鍵、連拍間隔設定、中英菜單切換
// @description:zh-CN Twitch截图工具，支援截图按钮、快捷键截图、连拍功能，自定义快捷键、连拍间隔设定、中英菜单切换
// @author chatgpt
// @match https://www.twitch.tv/*
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// @license MIT
// @run-at document-idle
// ==/UserScript==
(function () {
'use strict';
// 取得語言、快捷鍵、連拍間隔等設定
const lang = GM_getValue("lang", "en").toLowerCase(); // 語言（en/zh-tw）
const screenshotKey = GM_getValue("screenshotKey", "s"); // 快捷鍵
const intervalTime = parseInt(GM_getValue("shootInterval", "1000"), 10); // 連拍間隔(ms)
let shootTimer = null; // 連拍定時器
let debounceTimeout = null; // 防抖用於按鈕插入
// 多語系文字
const textMap = {
en: {
btnTooltip: `Screenshot (Shortcut: ${screenshotKey.toUpperCase()})`,
setKey: `Set Screenshot Key (Current: ${screenshotKey.toUpperCase()})`,
setInterval: `Set Interval (Current: ${intervalTime}ms)`,
langSwitch: `language EN`,
keyError: `Please enter a single letter (A-Z).`,
intervalError: `Please enter a number >= 100`,
},
"zh-tw": {
btnTooltip: `擷取畫面（快捷鍵：${screenshotKey.toUpperCase()}）`,
setKey: `設定快捷鍵（目前為 ${screenshotKey.toUpperCase()}）`,
setInterval: `設定連拍間隔（目前為 ${intervalTime} 毫秒）`,
langSwitch: `語言 中文`,
keyError: `請輸入單一英文字母（A-Z）！`,
intervalError: `請輸入 100ms 以上的數字！`,
}
};
const text = textMap[lang] || textMap["en"];
// 取得目前直播主ID（網址路徑第一段）
function getStreamerId() {
const match = window.location.pathname.match(/^\/([^\/?#]+)/);
return match ? match[1] : "unknown";
}
// 取得當前時間字串（小時_分鐘_秒_毫秒，檔名用）
function getTimeString() {
const now = new Date();
const pad = n => n.toString().padStart(2, '0');
const padMs = n => n.toString().padStart(3, '0');
return `${pad(now.getHours())}_${pad(now.getMinutes())}_${pad(now.getSeconds())}_${padMs(now.getMilliseconds())}`;
}
// 取得年月日字串（檔名用）
function getDateString() {
const now = new Date();
const pad = n => n.toString().padStart(2, '0');
return `${now.getFullYear()}${pad(now.getMonth() + 1)}${pad(now.getDate())}`;
}
// 擷取畫面主函式
function takeScreenshot() {
const video = document.querySelector('video');
if (!video || video.readyState < 2) return; // 沒有影片或影片未載入完成
const canvas = document.createElement("canvas");
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
const ctx = canvas.getContext("2d");
ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
canvas.toBlob(blob => {
if (!blob) return;
const a = document.createElement("a");
// 檔名格式：小時_分鐘_秒_毫秒_ID_年月日_解析度.png
a.download = `${getTimeString()}_${getStreamerId()}_${getDateString()}_${canvas.width}x${canvas.height}.png`;
a.href = URL.createObjectURL(blob);
a.style.display = "none";
document.body.appendChild(a);
a.click();
setTimeout(() => {
document.body.removeChild(a);
URL.revokeObjectURL(a.href);
}, 100);
}, "image/png");
}
// 開始連拍
function startContinuousShot() {
if (shootTimer) return;
takeScreenshot();
shootTimer = setInterval(takeScreenshot, intervalTime);
}
// 停止連拍
function stopContinuousShot() {
clearInterval(shootTimer);
shootTimer = null;
}
// 插入截圖按鈕到 Twitch 控制列
function createIntegratedButton() {
if (document.querySelector("#screenshot-btn")) return; // 已存在就不重複插入
// 嘗試多個常見控制列選擇器
const controls = document.querySelector('.player-controls__right-control-group') ||
document.querySelector('[data-a-target="player-controls-right-group"]');
if (!controls) {
// 控制列還沒出現，稍後重試
setTimeout(createIntegratedButton, 1000);
return;
}
// 建立按鈕
const btn = document.createElement("button");
btn.id = "screenshot-btn";
btn.innerHTML = "📸";
btn.title = text.btnTooltip;
Object.assign(btn.style, {
background: 'transparent',
border: 'none',
color: 'white',
fontSize: '20px',
cursor: 'pointer',
marginLeft: '8px',
display: 'flex',
alignItems: 'center',
order: 9999,
zIndex: '2147483647'
});
// 綁定滑鼠事件（支援連拍）
btn.addEventListener('mousedown', startContinuousShot, { capture: true });
btn.addEventListener('mouseup', stopContinuousShot, { capture: true });
btn.addEventListener('mouseleave', stopContinuousShot, { capture: true });
// 插入到控制列最右側
try {
const referenceNode = controls.querySelector('[data-a-target="player-settings-button"]');
if (referenceNode) {
controls.insertBefore(btn, referenceNode);
} else {
controls.appendChild(btn);
}
} catch (e) {
controls.appendChild(btn);
}
}
// 防抖：避免頻繁重複插入按鈕
function createIntegratedButtonDebounced() {
if (debounceTimeout) clearTimeout(debounceTimeout);
debounceTimeout = setTimeout(createIntegratedButton, 500);
}
// 初始化主流程
function init() {
createIntegratedButton();
// 監控整個 body，偵測 DOM 變動時自動補回按鈕
const observer = new MutationObserver(createIntegratedButtonDebounced);
observer.observe(document.body, { childList: true, subtree: true });
// 每5秒定時檢查按鈕是否存在
setInterval(() => {
if (!document.querySelector("#screenshot-btn")) {
createIntegratedButton();
}
}, 5000);
}
// 判斷目前是否在輸入框內輸入
function isTyping() {
const active = document.activeElement;
return active && ['INPUT', 'TEXTAREA'].includes(active.tagName) || active.isContentEditable;
}
// 快捷鍵事件：支援單鍵連拍
document.addEventListener("keydown", e => {
if (
e.key.toLowerCase() === screenshotKey.toLowerCase() &&
!shootTimer &&
!isTyping() &&
!e.repeat
) {
e.preventDefault();
startContinuousShot();
}
});
document.addEventListener("keyup", e => {
if (
e.key.toLowerCase() === screenshotKey.toLowerCase() &&
!isTyping()
) {
e.preventDefault();
stopContinuousShot();
}
});
// 註冊油猴右鍵選單：自訂快捷鍵
GM_registerMenuCommand(text.setKey, () => {
const input = prompt(
lang === "en"
? "Enter new shortcut key (A-Z)"
: "請輸入新的快捷鍵（A-Z）",
screenshotKey
);
if (input && /^[a-zA-Z]$/.test(input)) {
GM_setValue("screenshotKey", input.toLowerCase());
location.reload();
} else {
alert(text.keyError);
}
});
// 註冊油猴右鍵選單：自訂連拍間隔
GM_registerMenuCommand(text.setInterval, () => {
const input = prompt(
lang === "en"
? "Enter interval in milliseconds (min: 100)"
: "請輸入新的連拍間隔（最小100毫秒）",
intervalTime
);
const val = parseInt(input, 10);
if (!isNaN(val) && val >= 100) {
GM_setValue("shootInterval", val);
location.reload();
} else {
alert(text.intervalError);
}
});
// 註冊油猴右鍵選單：語言切換
GM_registerMenuCommand(text.langSwitch, () => {
GM_setValue("lang", lang === "en" ? "zh-tw" : "en");
location.reload();
});
// 啟動腳本
init();
})();
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