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按住"→"键倍速播放, 按住"←"键减速播放, 松开恢复原来的倍速，灵活追剧看视频~ 支持用户单独配置倍速和秒数，并可根据根域名启用或禁用脚本
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// ==UserScript==
// @name 黄金左右键
// @description 按住"→"键倍速播放, 按住"←"键减速播放, 松开恢复原来的倍速，灵活追剧看视频~ 支持用户单独配置倍速和秒数，并可根据根域名启用或禁用脚本
// @icon https://image.suysker.xyz/i/2023/10/09/artworks-QOnSW1HR08BDMoe9-GJTeew-t500x500.webp
// @namespace http://tampermonkey.net/
// @version 1.0.0
// @author Suysker
// @match http://*/*
// @match https://*/*
// @grant GM_registerMenuCommand
// @grant GM_setValue
// @grant GM_getValue
// @homepage https://github.com/Suysker/Golden-Left-Right
// @supportURL https://github.com/Suysker/Golden-Left-Right
// ==/UserScript==
(function () {
'use strict';
const DEFAULT_RATE = 2; // 默认倍速
const DEFAULT_TIME = 5; // 默认秒数
const DOMAIN_BLOCK_LIST_KEY = "blockedDomains"; // 存储禁用的根域名列表的键名
let keyboardEventsRegistered = false; // 确保键盘事件只注册一次
let debug = false; // 控制日志的输出，正式环境关闭
const loadSetting = async (key, defaultValue) => {
const value = await GM_getValue(key, defaultValue);
return value !== undefined ? value : defaultValue;
};
const saveSetting = async (key, value) => {
await GM_setValue(key, value);
};
const log = debug ? console.log.bind(console) : () => {};
const getRootDomain = () => {
const parts = location.hostname.split('.');
return parts.slice(-2).join('.'); // 获取根域名 (例如 example.com)
};
const isDomainBlocked = async () => {
const blockedDomains = await loadSetting(DOMAIN_BLOCK_LIST_KEY, []);
const currentDomain = getRootDomain();
return blockedDomains.includes(currentDomain);
};
const toggleCurrentDomain = async () => {
const blockedDomains = await loadSetting(DOMAIN_BLOCK_LIST_KEY, []);
const currentDomain = getRootDomain();
const index = blockedDomains.indexOf(currentDomain);
let isNowBlocked = false;
if (index === -1) {
blockedDomains.push(currentDomain);
await saveSetting(DOMAIN_BLOCK_LIST_KEY, blockedDomains);
alert(`已禁用黄金左右键脚本在此网站 (${currentDomain})`);
isNowBlocked = true;
} else {
blockedDomains.splice(index, 1);
await saveSetting(DOMAIN_BLOCK_LIST_KEY, blockedDomains);
alert(`已启用黄金左右键脚本在此网站 (${currentDomain})`);
isNowBlocked = false;
}
keyboardEventsRegistered = false; // 确保键盘事件重新注册
handleKeyboardEvents(!isNowBlocked); // 根据新状态立即启用/禁用键盘事件
};
const state = {
downCount: 0,
playbackRate: DEFAULT_RATE, // 播放倍速
changeTime: DEFAULT_TIME, // 快进/回退秒数
pageVideo: null,
lastPlayedVideo: null, // 记录上一个播放过的视频（通过 play 事件更新）
originalPlaybackRate: 1 // 存储原来的播放速度
};
const isVideoVisible = (video) => {
const rect = video.getBoundingClientRect();
return (
rect.top >= 0 &&
rect.left >= 0 &&
rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
rect.right <= (window.innerWidth || document.documentElement.clientWidth)
);
};
const isVideoPlaying = (video) => {
return video && !video.paused && video.currentTime > 0;
};
const getAllVideos = () => {
return Array.from(document.getElementsByTagName('video'));
};
const addPlayEventListeners = (video) => {
video.addEventListener('play', () => {
state.lastPlayedVideo = video; // 仅在视频播放时更新
log('更新 lastPlayedVideo: 当前播放的视频', video);
});
};
const initVideoListeners = () => {
const allVideos = getAllVideos();
allVideos.forEach(addPlayEventListeners); // 为每个视频添加事件监听
};
const getOptimalPageVideo = async () => {
const allVideos = getAllVideos();
const playingVideo = allVideos.find(isVideoPlaying);
if (playingVideo) {
return playingVideo;
}
if (state.lastPlayedVideo && isVideoVisible(state.lastPlayedVideo)) {
return state.lastPlayedVideo;
}
return null;
};
const checkPageVideo = async () => {
state.pageVideo = await getOptimalPageVideo();
if (!state.pageVideo) {
log('未找到符合条件的视频');
return false;
}
return true;
};
const isInputFocused = () => {
const activeElement = document.activeElement;
const inputTypes = ['input', 'textarea', 'select', 'button'];
const isContentEditable = activeElement && activeElement.isContentEditable;
const isInputElement = activeElement && inputTypes.includes(activeElement.tagName.toLowerCase());
return isContentEditable || isInputElement;
};
const handleKeyboardEvents = async (enable) => {
if (enable && !keyboardEventsRegistered) {
document.body.addEventListener('keydown', onRightKeyDown, { capture: true });
document.body.addEventListener('keydown', onLeftKeyDown, { capture: true });
document.body.parentElement.addEventListener('keyup', onRightKeyUp, { capture: true });
document.body.parentElement.addEventListener('keyup', onLeftKeyUp, { capture: true });
keyboardEventsRegistered = true;
} else if (!enable && keyboardEventsRegistered) {
document.body.removeEventListener('keydown', onRightKeyDown, { capture: true });
document.body.removeEventListener('keydown', onLeftKeyDown, { capture: true });
document.body.parentElement.removeEventListener('keyup', onRightKeyUp, { capture: true });
document.body.parentElement.removeEventListener('keyup', onLeftKeyUp, { capture: true });
keyboardEventsRegistered = false;
}
};
const onRightKeyDown = async (e) => {
if (e.keyCode !== 39 || isInputFocused()) return;
e.preventDefault();
e.stopPropagation();
state.downCount++;
if (state.downCount === 2 && await checkPageVideo()) {
if (isVideoPlaying(state.pageVideo)) {
state.originalPlaybackRate = state.pageVideo.playbackRate;
state.pageVideo.playbackRate = state.playbackRate;
log('加速播放中, 倍速: ' + state.playbackRate);
}
}
};
const onRightKeyUp = async (e) => {
if (e.keyCode !== 39 || isInputFocused()) return;
e.preventDefault();
e.stopPropagation();
if (state.downCount === 1 && await checkPageVideo()) {
state.pageVideo.currentTime += state.changeTime;
log('前进 ' + state.changeTime + ' 秒');
}
if (state.pageVideo && state.pageVideo.playbackRate !== state.originalPlaybackRate) {
state.pageVideo.playbackRate = state.originalPlaybackRate;
log('恢复原来的倍速: ' + state.originalPlaybackRate);
}
state.downCount = 0;
};
const onLeftKeyDown = async (e) => {
if (e.keyCode !== 37 || isInputFocused()) return;
e.preventDefault();
e.stopPropagation();
state.downCount++;
if (state.downCount === 2 && await checkPageVideo()) {
if (isVideoPlaying(state.pageVideo)) {
state.originalPlaybackRate = state.pageVideo.playbackRate;
state.pageVideo.playbackRate = 1 / state.playbackRate;
log('减速播放中, 倍速: ' + state.pageVideo.playbackRate);
}
}
};
const onLeftKeyUp = async (e) => {
if (e.keyCode !== 37 || isInputFocused()) return;
e.preventDefault();
e.stopPropagation();
if (state.downCount === 1 && await checkPageVideo()) {
state.pageVideo.currentTime -= state.changeTime;
log('回退 ' + state.changeTime + ' 秒');
}
if (state.pageVideo && state.pageVideo.playbackRate !== state.originalPlaybackRate) {
state.pageVideo.playbackRate = state.originalPlaybackRate;
log('恢复原来的倍速: ' + state.originalPlaybackRate);
}
state.downCount = 0;
};
const configurePlaybackRate = async () => {
const newRate = prompt('请输入新的播放倍速 (当前: ' + state.playbackRate + ')', state.playbackRate);
if (newRate !== null) {
const parsedRate = parseFloat(newRate);
if (!isNaN(parsedRate) && parsedRate > 0) {
state.playbackRate = parsedRate;
await saveSetting('playbackRate', state.playbackRate);
log('播放倍速设置为: ' + state.playbackRate);
}
}
};
const configureChangeTime = async () => {
const newTime = prompt('请输入新的快进/回退秒数 (当前: ' + state.changeTime + ')', state.changeTime);
if (newTime !== null) {
const parsedTime = parseFloat(newTime);
if (!isNaN(parsedTime) && parsedTime > 0) {
state.changeTime = parsedTime;
await saveSetting('changeTime', state.changeTime);
log('快进/回退秒数设置为: ' + state.changeTime);
}
}
};
const init = async () => {
const isBlocked = await isDomainBlocked();
handleKeyboardEvents(!isBlocked);
GM_registerMenuCommand('启用/禁用黄金左右键', toggleCurrentDomain);
GM_registerMenuCommand('设置播放倍速', configurePlaybackRate);
GM_registerMenuCommand('设置快进/回退秒数', configureChangeTime);
initVideoListeners();
const observer = new MutationObserver((mutations) => {
const hasVideoChanges = mutations.some(mutation => Array.from(mutation.addedNodes).some(node => node.tagName === 'VIDEO'));
if (hasVideoChanges) {
initVideoListeners(); // 仅在检测到视频节点变化时才初始化监听器
}
});
observer.observe(document.body, { childList: true, subtree: true });
};
init();
})();