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默认一倍速 ‘Ctrl+Alt+, 视频减速0.25, ‘Ctrl+Alt+.’视频加速速0.25, Ctrl+Alt+数字键则改为对应的速度, Ctrl+Alt+h 彻底隐藏窗口
// ==UserScript==
// @name 视频变速器0.22 -（吴三石石石石ah修改版）
// @namespace http://tampermonkey.net/
// @version 0.22
// @description 默认一倍速 ‘Ctrl+Alt+, 视频减速0.25, ‘Ctrl+Alt+.’视频加速速0.25, Ctrl+Alt+数字键则改为对应的速度, Ctrl+Alt+h 彻底隐藏窗口
// @author tignioj
// @match *://*/*
// @grant none
// ==/UserScript==
/**
* https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/contentWindow
*
* TODO:需要考虑iframe里面的video
*
*/
(function () {
'use strict';
//利用Object.assign 改变css
let setStylesOnElement = function (styles, ...elements
) {
for (var i = 0; i < elements.length; i++) {
Object.assign(elements[i].style, styles);
}
}
;
//创建窗体
var appDiv = document.createElement("div");
appDiv.id = "appDiv";
setStylesOnElement({
left: "0px",
top: "0px",
position: "fixed",
border: "1px solid red",
background: "rgba(255,255,255,0.5)",
zIndex: "1000"
}, appDiv);
//
//创建头部
var headerDiv = document.createElement("div");
var title = document.createElement("span");
title.id = "title";
title.innerText = "视频变速器";
var toggleBtn = document.createElement("span");
toggleBtn.innerText = "隐藏";
setStylesOnElement({
border: "1px solid red",
float: "right"
}, toggleBtn);
var isHidden = false;
toggleBtn.onclick = toogleWindow;
function toogleWindow() {
if (!isHidden) {
toggleBtn.innerText = "显示";
setStylesOnElement({
display: "none",
}, title, sliderContainer)
} else {
toggleBtn.innerText = "隐藏";
setStylesOnElement({
display: "inline-block",
}, title, sliderContainer)
}
isHidden = !isHidden;
}
headerDiv.appendChild(title);
headerDiv.appendChild(toggleBtn);
var infoEle = document.createElement("div");
setStylesOnElement({
fontWeight: "bold",
margin: 0,
padding: 0
}, title, infoEle)
//显示速度
function changeShowValue(v) {
slider.value = v;
var s = "‘Ctrl+Alt+,’视频减速0.25 \n" +
"‘Ctrl+Alt+.’视频加速速0.25 \n" +
"Ctrl+Alt+数字键 \n" +
"则改为对应的速度 \n" +
"Ctrl+Alt+h 彻底隐藏窗口\n" +
"当前速度" + v;
infoEle.innerText = s;
}
var sliderContainer = document.createElement("div");
//创建slider
var slider = document.createElement("input");
slider.id = "slider";
slider.min = 0.25;
slider.max = 10;
slider.step = 0.25;
slider.type = "range";
slider.value = globalRate;
slider.oninput = function (ev) {
ev.stopPropagation();
//防止事件被父元素捕捉
speedChange(this.value);
}
var btnGroup = document.createElement("div");
btnGroup.appendChild(getBtn(0.5));
btnGroup.appendChild(getBtn(0.75));
btnGroup.appendChild(getBtn(1));
btnGroup.appendChild(getBtn(1.25));
btnGroup.appendChild(getBtn(1.5));
btnGroup.appendChild(getBtn(2));
//创建按钮组同时给按钮添加监听
function getBtn(value) {
var v1 = document.createElement("button");
v1.innerText = value;
v1.style.fontSize = "1.5em";
v1.style.width = "50%";
v1.onclick = function (ev) {
globalRate = value;
//当按钮点击，重新激活interval
loopWatch();
ev.stopPropagation();
}
return v1;
}
sliderContainer.appendChild(slider);
sliderContainer.appendChild(btnGroup);
sliderContainer.appendChild(infoEle);
//添加文本和按钮到窗体
appDiv.appendChild(headerDiv);
appDiv.appendChild(sliderContainer);
/**
* 更改速度
* @param rate
*/
function speedChange(rate) {
rate = Number(rate);
if (rate < 0.25) {
rate = 0.25;
}
if (rate > 10) {
rate = 10;
}
//更改全局速度
globalRate = rate;
var videos = getVideoEleFromDocument();
for (let i = 0; i < videos.length; i++) {
let video = videos[i];
if (video.playbackRate != rate) {
video.playbackRate = rate;
changeShowValue(rate);
}
}
}
/**
* 从当前document中获取video元素， 如果没有则抛出异常
*/
function getVideoEleFromDocument() {
//拿到htmlCollection
var videos = document.getElementsByTagName("video");
if (videos.length === 0 || typeof (videos[0]) === "undefined") {
throw "没有检测到视频哦~";
}
// if (video.length > 1) {
// throw "视频数量过多，无法指定";
// }
return videos;
}
//设置全局速度
var DEFAULT_RATE = 1;
var globalRate = 1;
/**
* app的隐藏和显示来回切换
*/
function toogleApp() {
var d = (appDiv.style.display || "block");
var result = d === "block" ? "none" : "block";
appDiv.style.display = result;
}
//加速重试次数
var retryTime = 0;
function loadApp() {
console.log("加载App")
//检测按键行为
var targArea = document;
targArea.addEventListener('keydown', reportKeyEvent);
function reportKeyEvent(zEvent) {
//--- Was a Ctrl-Alt- combo pressed?
if (zEvent.ctrlKey && zEvent.altKey) { // case sensitive
switch (zEvent.key) {
case ",":
speedChange(globalRate - 0.25)
break;
case ".":
speedChange(globalRate + 0.25)
break;
case "/":
speedChange(DEFAULT_RATE)
break;
case "h":
toogleApp();
}
for (var i = 0; i <= 9; i++) {
if (String(i) === zEvent.key) {
speedChange(i)
}
}
}
//zEvent.stopPropagation ();
//zEvent.preventDefault ()
}
document.body.appendChild(appDiv);
};
/**
* 设置整个appDiv是否显示
* @param b
*/
function setAppIsShow(b) {
if (b) {
appDiv.style.display = "block";
} else {
appDiv.style.display = "none";
}
}
/**
* 循环监听视频速度
*/
function loopWatch() {
clearInterval(document.watchSpeedTask);
document.watchSpeedTask = setInterval(function () {
try {
speedChange(globalRate);
} catch (e) {
retryTime++;
console.error("出错1：", e, "正在重试第" + retryTime + "次");
if (retryTime >= 10) {
clearInterval(document.watchSpeedTask);
console.error("加速失败，请刷新页面")
retryTime = 0;
}
}
}, 1000);
}
/**
* 程序入口
*/
function main() {
setAppIsShow(true);
loadApp();
loopWatch();
}
window.onload = function () {
// console.log("加载文档完毕");
try {
//如果没有video则会抛异常
getVideoEleFromDocument();
main();
// console.log("成功:", "对应的文档", document)
} catch (e) {
// console.error("出错:" , e, "对应文档", document);
}
}
})();