该脚本适用于长江雨课堂，进行正在上课的答案显示以及PDF预下载，以及回看的答案显示和pdf预下载
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// ==UserScript==
// @name 雨课堂答案显示
// @namespace http://tampermonkey.net/
// @version 0.0.1
// @description 该脚本适用于长江雨课堂，进行正在上课的答案显示以及PDF预下载，以及回看的答案显示和pdf预下载
// @author 文程
// @match *://*.yuketang.cn/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @grant GM_addStyle
// @grant GM.setClipboard
// @require https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.debug.js
// @license MIT
// ==/UserScript==
(function () {
'use strict';
if (location.href.match(/yuketang.cn/)) {
Rainclassroom();
}
function JumpObj(elem, range, startFunc, endFunc) {
// 按钮跳动
var curMax = range = range || 6;
startFunc = startFunc || function () { };
endFunc = endFunc || function () { };
var drct = 0;
var step = 1;
init();
function init() { elem.style.position = 'relative'; active() }
function active() { elem.onmouseover = function (e) { if (!drct) jump() } }
function deactive() { elem.onmouseover = null }
function jump() {
var t = parseInt(elem.style.top);
if (!drct) motionStart();
else {
var nextTop = t - step * drct;
if (nextTop >= -curMax && nextTop <= 0) elem.style.top = nextTop + 'px';
else if (nextTop < -curMax) drct = -1;
else {
var nextMax = curMax / 2;
if (nextMax < 1) { motionOver(); return; }
curMax = nextMax;
drct = 1;
}
}
setTimeout(function () { jump() }, 200 / (curMax + 3) + drct * 3);
}
function motionStart() {
startFunc.apply(this);
elem.style.top = '0';
drct = 1;
}
function motionOver() {
endFunc.apply(this);
curMax = range;
drct = 0;
elem.style.top = '0';
}
this.jump = jump;
this.active = active;
this.deactive = deactive;
};
function loadImage(url) {
// 图片加载
return new Promise((resolve, reject) => {
var img = new Image();
var data;
img.setAttribute("crossOrigin", "Anonymous");
img.src = url;
img.onError = function () {
throw new Error('Cannot load image: "' + url + '"');
};
img.onload = function () {
var canvas = document.createElement("canvas");
document.body.appendChild(canvas);
canvas.width = img.width;
canvas.height = img.height;
var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0);
// Grab the image as a jpeg encoded in base64, but only the data
data = canvas
.toDataURL("image/jpeg")
.slice("data:image/jpeg;base64,".length);
// Convert the data to binary form
data = atob(data);
document.body.removeChild(canvas);
resolve(data);
};
});
}
function txtdownload(result) {
// txt下载
const stringData = JSON.stringify(result, null, 2)
// dada 表示要转换的字符串数据，type 表示要转换的数据格式
const blob = new Blob([stringData], {
type: 'application/json'
})
// 根据 blob生成 url链接
const objectURL = URL.createObjectURL(blob)
// 创建一个 a 标签Tag
const aTag = document.createElement('a')
// 设置文件的下载地址
aTag.href = objectURL
// 设置保存后的文件名称
aTag.download = "1.txt"
// 给 a 标签添加点击事件
aTag.click()
// 释放一个之前已经存在的、通过调用 URL.createObjectURL() 创建的 URL 对象。
// 当你结束使用某个 URL 对象之后，应该通过调用这个方法来让浏览器知道不用在内存中继续保留对这个文件的引用了。
URL.revokeObjectURL(objectURL)
}
function getImgWidthHeight(src) {
// 获取图片宽高
return new Promise((resolve, reject) => {
const img = new Image()
img.src = src
// 图片是否有缓存 如果有缓存可以直接拿 如果没有缓存 需要从onload拿
if (img.complete) {
const { width, height } = img
resolve({
width,
height,
})
} else {
img.onload = function () {
const { width, height } = img
resolve({
width,
height,
})
}
}
})
}
async function download(imgList, namepdf) {
// pdf下载
var imgData = new Array();
console.log(imgList)
for (var i = 0; i < imgList.length; i++) {
var link = imgList[i];
console.log("获取第" + i + "张图片");
await loadImage(link).then((data) => {
imgData.push(data);
});
}
const { width, height } = await getImgWidthHeight(imgList[0])
var doc = new jsPDF({
orientation: "landscape",
unit: "px",
format: [width, height],
});
const output = namepdf + ".pdf";
let idx = 0;
imgData.forEach((e) => {
idx++;
doc.addImage(e, "JPG", 0, 0, width, height);
if (idx < imgData.length) {
doc.addPage();
}
});
doc.save(output);
}
function Rainclassroom() {
// 新建答案填充框
var table1 = document.createElement('div');
table1.className = 'answer';
document.getElementById("app").append(table1);
table1.style.zIndex = 19891015;
table1.style.width = '20%';
//table1.style.height = '11%';
table1.style.position = 'absolute';
table1.style.top = '60%';
table1.style.left = '70%';
table1.style.visibility = 'visible';
table1.style.background = 'rgba(255,235,205,0.5)';
table1.style.filter = 'alpha(opacity=50)';
table1.style.borderRadius = '20px 20px 20px 20px';
table1.style.textAlign = 'center';
table1.style.overflowY = null;
// 刷课
var tr4 = document.createElement("button");
table1.appendChild(tr4)
Object.assign
(
tr4.style,
{
width: '40%',
borderradius: '8px',
background: 'rgba(255, 251, 240, 0.3)',
margin: '5%',
alignitems: 'center',
justifycontent: 'center',
textAlign: 'center',
filter: 'alpha(opacity=50%)'
}
)
tr4.innerText = "开始刷课";
const button2 = tr4;
tr4.className = 'close';
function showLogin() {
// 连续翻页设置
document.onkeydown = function (ev) {
var event = ev || event
};
var e = new KeyboardEvent('keydown', { 'keyCode': 40, 'which': 40 });
document.dispatchEvent(e);
}
button2.onclick = () => {
// 连续翻页
var check = tr4.className;
if (check == "close") {
tr4.className = 'open';
tr4.innerText = '结束刷课';
//setInterval方法或字符串 ，毫秒，参数数组（方法的）)
if (!window.interVal) {
window.interVal = window.setInterval(() => {
showLogin();
}, 6 * 1000 + Math.random() * 1.5 * 1000);
}
}
if (check == "open") {
tr4.className = 'close';
tr4.innerText = '开始刷课';
if (window.interVal) {
window.clearInterval(window.interVal);
window.interVal = null;
}
}
}
var tr1 = document.createElement("button");
table1.appendChild(tr1)
Object.assign
(
tr1.style,
{
width: '40%',
borderradius: '8px',
background: 'rgba(255, 251, 240, 0.3)',
margin: '5%',
alignitems: 'center',
justifycontent: 'center',
textAlign: 'center',
filter: 'alpha(opacity=50%)'
}
)
tr1.innerText = "显示答案";
const button0 = tr1;
tr1.className = 'close';
button0.onclick = () => {
//console.log(tr1.className)
var check = tr1.className;
if (check == "close") {
tr1.className = 'open';
tr1.innerText = '隐藏答案';
Object.assign
(
table1.style,
{
height: '20%',
overflowY: 'overlay'
}
)
var lists = document.getElementsByClassName('slide');
for (var j = 0; j < lists.length; j++) {
var tri = lists[j];
Object.assign
(
tri.style,
{
display: null
}
)
}
}
if (check == "open") {
tr1.className = 'close';
tr1.innerText = '显示答案';
Object.assign
(
table1.style,
{
height: '5%',
overflowY: null
}
)
var lists = document.getElementsByClassName('slide');
for (var j = 0; j < lists.length; j++) {
var tri = lists[j];
Object.assign
(
tri.style,
{
display: 'none',
}
)
}
}
}
//JumpObj(button0, 10)
var ppti = 0; // ppt个数
const Allanswer = {} // 所有答案
//监听操作事件
const handleSendResule = (res) => {
const result = JSON.parse(res.target.responseText); // 返回值
if (result['data'] == undefined) // 判断是否为目标xhr
{
return;
}
if (result.data['slides'] == undefined | result.data['Slides'] == undefined)
{
return;
}
if (result.data.Slides) {
var namei = result.data.Title;
var checkpdf = document.getElementById(namei);
if (checkpdf == null) {
ppti += 1;
var tr3 = document.createElement("div");
tr3.id = result.data.Title;
tr3.innerText = "PPT：" + result.data.Title + ".pdf" + "不支持解析";
tr3.className = 'slide';
if (tr1.className == 'close') {
tr3.setAttribute("style", "display:none")
}
if
(tr1.className == 'open') {
tr3.setAttribute("style", "display:block")
}
table1.appendChild(tr3)
}
}
else {
if (result.data.slides) {
var namepdf = '';
var answer = result.data.slides;
const imgList = Array();
if (typeof (answer) == "object") {
var lens = answer.length;
var key = Object.keys(answer);
var i = 0;
var temp3 = '';
for (i = 0; i < lens; i++) {
imgList[i] = result.data.slides[i].cover;
if (result.data.presentation) // ppt回看时的答案
{
namepdf = result.data.presentation.title;
var que1 = result.data.slides[i].result;
if (que1 != null) {
var a = que1.correctAnswer;
for (var kk = 0; kk < a.length; kk++) {
temp3 = temp3 + a[kk] + ";"
}
Allanswer[key[i]] = temp3
}
temp3 = ""
}
else {
// 上课的
namepdf = result.data.title;
var que = answer[key[i]].problem;
if (typeof (que) != "undefined" && typeof (que) != "null") {
len2 = que.answers.length
//console.log(len2)
if (len2 == 0) {
Allanswer[key[i]] = "答案任意"
}
else {
for (var j = 0, len2; j < len2; j++) {
temp3 = temp3 + que.answers[j] + "; "
//console.log(temp2)
}
Allanswer[key[i]] = temp3
}
temp3 = ""
}
}
}
}
var checkpdf = document.getElementById(namepdf);
// 检查是否存在
if (checkpdf == null) {
ppti += 1;
var tr3 = document.createElement("div");
tr3.innerText = "PPT" + namepdf + "的答案为：";
tr3.id = namepdf;
tr3.className = 'slide';
if (tr1.className == 'close') {
tr3.setAttribute("style", "display:none")
}
if
(tr1.className == 'open') {
tr3.setAttribute("style", "display:block")
}
table1.appendChild(tr3)
// 答案加入
var ind = Object.keys(Allanswer)
var ans = Object.values(Allanswer)
for (i = 0; i < ind.length; i++) {
var tr2 = document.createElement("div");
tr2.className = 'slide';
if (tr1.className == 'close') {
tr2.setAttribute("style", "display:none")
}
if
(tr1.className == 'open') {
tr2.setAttribute("style", "display:block")
}
//tr2.setAttribute("style", "background:rgba(85,85,85,0.7);color:white;background:rgba(85,85,85,0.7);color:white;")
tr2.innerText = String(parseInt(ind[i]) + 1) + "题答案为：\t" + ans[i];
table1.appendChild(tr2)
}
// 文件写入按钮
var button1 = document.createElement('button');
table1.appendChild(button1);
if (tr1.className == 'close') {
button1.setAttribute("style", "display:none")
}
if
(tr1.className == 'open') {
button1.setAttribute("style", "display:null")
}
Object.assign
(
button1.style,
{
width: '50%',
borderradius: '8px',
background: 'rgba(255, 251, 240, 0.3)',
alignitems: 'center',
justifycontent: 'center',
textAlign: 'center',
filter: 'alpha(opacity=50%)'
}
)
button1.className = 'slide';
button1.innerText = '保存为PDF';
const button = button1;
// 给按钮添加点击事件
button.onclick = () => {
// 要保存的字符串, 需要先将数据转成字符串
// txtdownload();
download(imgList, namepdf);
}
// 跳动效果
JumpObj(button, 10)
}
}
}
}
const handler = {
apply: function (target, thisArg, body) {
thisArg.addEventListener('load', handleSendResule)
thisArg.addEventListener('error', handleSendResule)
return target.call(thisArg, body)
}
}
XMLHttpRequest.prototype.send = new Proxy(XMLHttpRequest.prototype.send, handler)
}
// Your code here...
})();