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kill-e-book

文泉书局(bit)|高教书苑|中教经典|可知|先晓书院|工程科技(校)|悦读(校)|社会科学文库|畅想之星|书递等公开免费电子书下载

当前为 2024-10-08 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         kill-e-book 
  3. // @namespace    http://tampermonkey.net/
  4. // @homepage	 https://github.com/systemmin/kill-doc
  5. // @version      1.1.4
  6. // @description  文泉书局(bit)|高教书苑|中教经典|可知|先晓书院|工程科技(校)|悦读(校)|社会科学文库|畅想之星|书递等公开免费电子书下载
  7. // @author       Mr.Fang
  8. // @match        https://*.wqxuetang.com/deep/read/pdf*
  9. // @match        https://nlibvpn.bit.edu.cn/*/*/deep/read/pdf?bid=*
  10. // @match        https://ebook.hep.com.cn/index.html*
  11. // @match        https://www.zjjd.cn/read-book*
  12. // @match        https://www.keledge.com/pdfReader*
  13. // @match        https://xianxiao.ssap.com.cn/readerpdf/static/pdf/web/*
  14. // @match        https://ersp.lib.whu.edu.cn/*
  15. // @match        https://dcd.cmpkgs.com/*
  16. // @match        https://sso.zslib.cn/*
  17. // @match        https://www.sklib.cn/pdf_reader/index.html*
  18. // @match        https://www.cxstar.com/onlineepub*
  19. // @match        https://www.elib.link/pdf/*
  20. // @require      https://lf6-cdn-tos.bytecdntp.com/cdn/expire-1-M/jspdf/2.4.0/jspdf.umd.min.js
  21. // @require      https://unpkg.com/@zip.js/zip.js@2.7.34/dist/zip.min.js
  22. // @require      https://unpkg.com/html2canvas@1.4.1/dist/html2canvas.js
  23. // @icon         https://dtking.cn/favicon.ico
  24. // @run-at 		 document-idle
  25. // @grant        none
  26. // @license      Apache-2.0
  27. // ==/UserScript==
  28.  
  29. (function() {
  30. 	'use strict';
  31. 	let MF =
  32. 		'#MF_fixed{position:fixed;top:50%;transform:translateY(-50%);right:20px;gap:10px;flex-direction:column;z-index:2147483647;display:flex}';
  33. 	MF +=
  34. 		'.MF_box{padding:10px;cursor:pointer;border-color:rgb(0,102,255);border-radius:5px;background-color:white;color:rgb(0,102,255);}.MF_active{color: green}#MF_k_page_no,#MF_k_page_size{color: red;}';
  35. 	const prefix = "MF_";
  36. 	// canvas 禁止重写 drawImage
  37. 	const canvasRenderingContext2DPrototype = CanvasRenderingContext2D.prototype;
  38. 	const originalDrawImage = canvasRenderingContext2DPrototype.drawImage;
  39. 	Object.defineProperty(canvasRenderingContext2DPrototype, 'drawImage', {
  40. 		value: originalDrawImage,
  41. 		writable: false,
  42. 		configurable: false
  43. 	});
  44.  
  45. 	class Box {
  46. 		id = ""; // id
  47. 		label = ""; // 按钮文本
  48. 		title = "";
  49. 		fun = ""; // 执行方法
  50. 		constructor(id, label, fun) {
  51. 			this.id = id;
  52. 			this.label = label;
  53. 			this.fun = fun;
  54. 		}
  55.  
  56. 		setTitle(title) {
  57. 			this.title = title;
  58. 			return this;
  59. 		}
  60. 	}
  61.  
  62. 	class Utility {
  63. 		debug = true;
  64.  
  65. 		/**
  66. 		 * 添加 css 样式
  67. 		 * @param e 节点
  68. 		 * @param data JSON 格式样式
  69. 		 */
  70. 		style(e, data) {
  71. 			Object.keys(data).forEach(key => {
  72. 				e.style[key] = data[key]
  73. 			})
  74. 		}
  75.  
  76. 		attr(e, key, val) {
  77. 			if (!val) {
  78. 				return e.getAttribute(key);
  79. 			} else {
  80. 				e.setAttribute(key, val);
  81. 			}
  82.  
  83. 		}
  84.  
  85. 		/**
  86. 		 *  追加样式
  87. 		 * @param css  格式样式
  88. 		 */
  89. 		appendStyle(css) {
  90. 			let style = this.createEl('', 'style');
  91. 			style.textContent = css;
  92. 			style.type = 'text/css';
  93. 			let dom = document.head || document.documentElement;
  94. 			dom.appendChild(style);
  95. 		}
  96.  
  97. 		/**
  98. 		 * @description 创建 dom
  99. 		 * @param id 必填
  100. 		 * @param elType
  101. 		 * @param data
  102. 		 */
  103. 		createEl(id, elType, data) {
  104. 			const el = document.createElement(elType);
  105. 			el.id = id || '';
  106. 			if (data) {
  107. 				this.style(el, data);
  108. 			}
  109. 			return el;
  110. 		}
  111.  
  112. 		query(el) {
  113. 			return document.querySelector(el);
  114. 		}
  115.  
  116. 		queryAll(el) {
  117. 			return document.querySelectorAll(el);
  118. 		}
  119.  
  120. 		update(el, text) {
  121. 			const elNode = this.query(el);
  122. 			if (!elNode) {
  123. 				console.log('节点不存在');
  124. 			} else {
  125. 				elNode.innerHTML = text;
  126. 			}
  127. 		}
  128.  
  129. 		/**
  130. 		 * 进度
  131. 		 * @param current 当前数量 -1预览结束
  132. 		 * @param total 总数量
  133. 		 * @param content 内容
  134. 		 */
  135. 		preview(current, total, content) {
  136. 			return new Promise(async (resolve, reject) => {
  137. 				if (current === -1) {
  138. 					this.update('#' + prefix + 'text', content ? content : "已完成");
  139. 				} else {
  140. 					let p = (current / total) * 100;
  141. 					let ps = p.toFixed(0) > 100 ? 100 : p.toFixed(0);
  142. 					console.log('当前进度', ps)
  143. 					this.update('#' + prefix + 'text', '进度' + ps + '%');
  144. 					await this.sleep(500);
  145. 					resolve();
  146. 				}
  147. 			})
  148.  
  149. 		}
  150.  
  151. 		preText(content) {
  152. 			this.update('#' + prefix + 'text', content);
  153. 		}
  154.  
  155. 		gui(boxs) {
  156. 			const box = this.createEl(prefix + "fixed", 'div');
  157. 			for (let x in boxs) {
  158. 				let item = boxs[x];
  159. 				if (!item.id) continue;
  160. 				let el = this.createEl(prefix + item.id, 'button');
  161. 				if (item.title) {
  162. 					el.title = item.title;
  163. 				}
  164. 				el.append(new Text(item.label));
  165. 				if (x === '0') {
  166. 					el.classList = prefix + 'box ' + prefix + "active";
  167. 				} else {
  168. 					el.className = prefix + "box";
  169. 				}
  170. 				if (item.fun) {
  171. 					el.onclick = function() {
  172. 						eval(item.fun);
  173. 					}
  174. 				}
  175. 				if (item.id === 'k_page_no') {
  176. 					this.attr(el, 'contenteditable', true)
  177. 				}
  178. 				if (item.id === 'k_page_size') {
  179. 					this.attr(el, 'contenteditable', true)
  180. 				}
  181. 				box.append(el);
  182. 			}
  183. 			document.body.append(box);
  184. 		}
  185.  
  186. 		sleep(ms) {
  187. 			return new Promise(resolve => setTimeout(resolve, ms));
  188. 		}
  189.  
  190. 		log(msg) {
  191. 			if (this.debug) {
  192. 				console.log(msg);
  193. 			}
  194. 		}
  195.  
  196. 		logt(msg) {
  197. 			if (this.debug) {
  198. 				console.table(msg);
  199. 			}
  200. 		}
  201. 	}
  202.  
  203. 	const u = new Utility();
  204. 	u.appendStyle(MF);
  205.  
  206.  
  207. 	const btns = [
  208. 		new Box('text', '状态 0 %'),
  209. 		new Box('k_page_no', '1').setTitle('指定页码，从第几页开始'),
  210. 		new Box('k_page_size', '100').setTitle('指定每次下载多少页面'), ,
  211. 		new Box('handleStart', '开始执行', 'handleStart()'),
  212. 		new Box('handleClean', '结束执行', 'handleClean()'),
  213. 		new Box('start', '继续预览', 'autoPreview()'),
  214. 		new Box('stop', '停止预览', 'stopPreview()'),
  215. 		new Box('pdf', '下载PDF', 'download()')
  216. 	]
  217.  
  218. 	const domain = {
  219. 		wqxuetang: 'wqxuetang.com',
  220. 		nlibvpn: 'nlibvpn.bit.edu.cn',
  221. 		ebook: 'ebook.hep.com.cn',
  222. 		zjjd: 'www.zjjd.cn',
  223. 		keledge: 'www.keledge.com',
  224. 		elib: 'www.elib.link',
  225. 		xianxiao: 'xianxiao.ssap.com.cn',
  226. 		ersp: 'ersp.lib.whu.edu.cn',
  227. 		cmpkgs: 'dcd.cmpkgs.com',
  228. 		zslib: 'sso.zslib.cn',
  229. 		sklib: 'www.sklib.cn',
  230. 		cxstar: 'www.cxstar.com',
  231. 	};
  232. 	const {
  233. 		host,
  234. 		href,
  235. 		origin
  236. 	} = window.location;
  237. 	const jsPDF = jspdf.jsPDF;
  238.  
  239. 	const doc = new jsPDF({
  240. 		orientation: 'p',
  241. 		unit: 'px',
  242. 		compress: true
  243. 	});
  244. 	//  794 x 1123 px
  245. 	let pdf_w = 446,
  246. 		pdf_h = 631,
  247. 		loading = 800, // 毫秒
  248. 		pdf_ratio = 0.56,
  249. 		title = document.title,
  250. 		select = null,
  251. 		selectPages = null,
  252. 		observeClassName = null,
  253. 		dom = null,
  254. 		params = null,
  255. 		interval = null;
  256.  
  257. 	// ，页码，几次
  258. 	let k_page_size = 0, // 页面容量
  259. 		k_count = 0, // 计次=第几次分页
  260. 		k_total = 0; // 计数=每次分页预览数量
  261.  
  262. 	const lastIndex = href.lastIndexOf('?')
  263. 	if (lastIndex != -1) {
  264. 		params = new URLSearchParams(href.substring(lastIndex));
  265. 	}
  266.  
  267.  
  268. 	/**
  269. 	 * @description 初始化方法
  270. 	 * @author Mr.Fang
  271. 	 * @time 2024年2月2日
  272. 	 */
  273. 	const MF_init = () => {
  274. 		console.table({
  275. 			host,
  276. 			href,
  277. 			origin
  278. 		})
  279. 		dom = document.documentElement || document.body;
  280. 		if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  281. 			select = "#pagebox .page-lmg";
  282. 			observeClassName = "page-lmg";
  283. 			dom = u.query('#scroll');
  284. 		} else if (host.includes(domain.ebook)) {
  285. 			if (!params)
  286. 				return;
  287. 			if (href.includes('detail')) {
  288. 				setTimeout(() => {
  289. 					localStorage.setItem('title', u.query('.bookName').innerText)
  290. 				}, 1000)
  291. 				return;
  292. 			}
  293. 			select = ".pdf-main .pdf-page";
  294. 			observeClassName = "pdf-reader";
  295. 			dom = u.query('#viewerContainer');
  296. 		} else if (host.includes(domain.zjjd)) {
  297. 			select = "#pdf-render .item";
  298. 			dom = u.query('#pdf-render > div');
  299. 		} else if (host.includes(domain.keledge)) {
  300. 			select = ".pdf-main .pdfViewer";
  301. 		} else if (host.includes(domain.elib)) {
  302. 			select = "#virtual [role='listitem']";
  303. 			dom = u.query('#virtual')
  304. 		} else if (host.includes(domain.xianxiao)) {
  305. 			select = "#viewer .page";
  306. 			dom = u.query('#viewerContainer');
  307. 		} else if (host.includes(domain.ersp)) {
  308. 			// 重置链接 
  309. 			const SkuExternalId = params.get('SkuExternalId')
  310. 			if (SkuExternalId) {
  311. 				const target = href.replaceAll('ersp.lib.whu.edu.cn/s/com/cmpkgs/dcd/G.https',
  312. 					'dcd.cmpkgs.com');
  313. 				window.location.href = target;
  314. 			}
  315. 			return;
  316. 		} else if (host.includes(domain.cmpkgs)) {
  317. 			select = ".pdf-main .pdf-page";
  318. 		} else if (host.includes(domain.zslib)) {
  319. 			if (!href.includes('pdfReader')) {
  320. 				return;
  321. 			}
  322. 			select = "#canvas_box .pdf_box";
  323. 			dom = u.query('.pdf_reader');
  324. 		} else if (host.includes(domain.sklib)) {
  325. 			select = "#viewer .page";
  326. 			dom = u.query('#viewerContainer');
  327. 		} else if (host.includes(domain.cxstar)) {
  328. 			select = "#epub-area .page-div-wrapper";
  329. 		}
  330. 		u.gui(btns);
  331. 		console.log('文件名称：', title);
  332. 	}
  333.  
  334.  
  335. 	const MF_loginfo = () => {
  336. 		console.log('k_page_size', localStorage.getItem('k_page_size'))
  337. 		console.log('k_page_no', localStorage.getItem('k_page_no'))
  338. 		console.log('k_count', localStorage.getItem('k_count'))
  339. 		console.log('k_total', k_total)
  340. 	}
  341.  
  342.  
  343. 	// load 事件
  344. 	(() => {
  345. 		MF_init()
  346. 		const k_start = localStorage.getItem('k_start');
  347. 		k_count = Number(localStorage.getItem('k_count')) || 0;
  348. 		k_page_size = Number(localStorage.getItem('k_page_size')) || 0;
  349. 		if (k_start) {
  350. 			setTimeout(() => {
  351. 				autoPreview();
  352. 			}, 2000)
  353. 		}
  354. 		MF_loginfo()
  355. 	})()
  356.  
  357. 	/**
  358. 	 * @description 前置方法
  359. 	 * @author Mr.Fang
  360. 	 * @time 2024年2月2日
  361. 	 */
  362. 	const before = () => {
  363. 		console.log('before=============>')
  364. 		if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  365. 			if (u.query('.reload_image')) {
  366. 				console.log('重新加载')
  367. 				u.query('.reload_image').click();
  368. 			}
  369. 		} else if (host.includes(domain.elib)) {
  370. 			title = document.title
  371. 		}
  372. 	}
  373.  
  374. 	/**
  375. 	 * @description 后置方法
  376. 	 * @author Mr.Fang
  377. 	 * @time 2024年2月2日
  378. 	 */
  379. 	const after = () => {
  380. 		console.log('after=============>')
  381. 		if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  382. 			let nodeTitle = u.query('.read-header-title');
  383. 			if (!nodeTitle) {
  384. 				nodeTitle = u.query('.read-header-name');
  385. 			}
  386. 			if (nodeTitle) {
  387. 				title = nodeTitle.innerText;
  388. 			}
  389. 		} else if (host.includes(domain.ebook)) {
  390. 			let t = localStorage.getItem('title');
  391. 			if (t) {
  392. 				title = t;
  393. 			}
  394. 		} else if (host.includes(domain.zjjd)) {
  395. 			title = u.query('.title').innerText;
  396. 		}
  397. 	}
  398.  
  399.  
  400. 	/**
  401. 	 * @description 开始执行
  402. 	 */
  403. 	const handleStart = () => {
  404. 		console.log('handleStart=============>')
  405. 		// 重新设置页码参数
  406. 		const k_page_no = Number(u.query('#MF_k_page_no').innerText) - 1;
  407. 		if (k_page_no > 0) {
  408. 			localStorage.setItem('k_page_no', k_page_no)
  409. 		} else {
  410. 			localStorage.setItem('k_page_no', 0)
  411. 		}
  412.  
  413. 		// 设置页面容量
  414. 		k_page_size = localStorage.getItem('k_page_size');
  415. 		const size = Number(u.query('#MF_k_page_size').innerText);
  416. 		if (size > 0) {
  417. 			k_page_size = size
  418. 		}
  419. 		localStorage.setItem('k_page_size', k_page_size)
  420. 		u.update('#MF_k_page_size', k_page_size)
  421.  
  422. 		// 自动预览
  423. 		autoPreview();
  424. 	}
  425.  
  426. 	/**
  427. 	 * @description 清空缓存数据
  428. 	 */
  429. 	const handleClean = () => {
  430. 		console.log('handleClean=============>')
  431. 		stopPreview();
  432. 		k_total = 0;
  433. 		k_count = 0;
  434. 		localStorage.removeItem('k_page_size')
  435. 		localStorage.removeItem('k_page_no')
  436. 		localStorage.removeItem('k_count')
  437. 		localStorage.removeItem('k_total')
  438. 		localStorage.removeItem('k_start')
  439. 		u.preview(-1, null, "已终止");
  440. 	}
  441.  
  442. 	/**
  443. 	 * @description 开始方法，自动预览
  444. 	 * @author Mr.Fang
  445. 	 * @time 2024年2月2日
  446. 	 */
  447. 	const autoPreview = async () => {
  448. 		// 开始执行标识
  449. 		localStorage.setItem('k_start', '1');
  450. 		// 初始化页码
  451. 		if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  452.  
  453. 		}
  454. 		// 自动翻页
  455. 		await autoPager()
  456. 	}
  457.  
  458. 	/**
  459. 	 * @description 结束方法，停止预览
  460. 	 * @author Mr.Fang
  461. 	 * @time 2024年2月2日
  462. 	 */
  463. 	const stopPreview = async () => {
  464. 		console.log('stopPreview=============>')
  465. 		if (interval) {
  466. 			clearInterval(interval);
  467. 			interval = null;
  468. 		}
  469. 		localStorage.removeItem('k_start')
  470. 	}
  471.  
  472. 	/**
  473. 	 * 判断 dom 是否在可视范围内
  474. 	 */
  475. 	const isVisible = (el) => {
  476. 		const rect = el.getBoundingClientRect();
  477. 		return (
  478. 			rect.top >= 0 && rect.top <= (window.innerHeight || document.documentElement.clientHeight)
  479. 		);
  480. 	}
  481. 	// wq 保存图片
  482. 	const saveImagePDF = async (els, i) => {
  483. 		localStorage.setItem('k_page_no', i + 1);
  484. 		let canvas;
  485. 		if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  486. 			canvas = await MF_ImageJoinToBlob(els);
  487. 		} else if (host.includes(domain.ebook)) {
  488. 			canvas = await MF_ImageToBase64(els.src);
  489. 		} else if (host.includes(domain.zjjd) || host.includes(domain.elib)) {
  490. 			console.log('下标', i)
  491. 			canvas = await MF_ImageToCanvas(els);
  492. 		} else if (host.includes(domain.keledge)) {
  493. 			canvas = els;
  494. 		} else if (host.includes(domain.xianxiao)) {
  495. 			canvas = els;
  496. 		} else if (host.includes(domain.cmpkgs) || host.includes(domain.zslib) || host.includes(domain
  497. 				.sklib) || host.includes(domain.cxstar)) {
  498. 			canvas = els
  499. 		}
  500. 		doc.addPage();
  501. 		doc.addImage(canvas, 'JPEG', 0, 0, pdf_w, pdf_h, i, 'FAST')
  502. 		if (doc.internal.pages[1].length === 2) {
  503. 			doc.deletePage(1); // 删除空白页
  504. 		}
  505. 		k_total++;
  506. 		// 更新dom
  507. 		u.update('#MF_k_page_size', k_page_size)
  508. 		u.update('#MF_k_page_no', i + 1)
  509.  
  510. 	}
  511.  
  512. 	/**
  513. 	 * @description 自动翻页
  514. 	 */
  515. 	const autoPager = async () => {
  516. 		if (!localStorage.getItem("k_start")) {
  517. 			u.preview(-1, null, "已停止");
  518. 			return;
  519. 		}
  520. 		before()
  521.  
  522. 		/**
  523. 		 * @description 图片是否加载完成
  524. 		 * @param {HTMLImageElement} img 图片节点
  525. 		 */
  526. 		const imageComplete = (img) => {
  527. 			return img.complete && img.naturalWidth > 0 && img.naturalHeight > 0;
  528. 		}
  529.  
  530. 		/**
  531. 		 * @description 所有字加载完成
  532. 		 * @param {HTMLElement} nodes 孩子节点
  533. 		 */
  534. 		const nodeComplete = (nodes) => {
  535. 			if (!nodes.length) return false;
  536. 			for (let i = 0; i < nodes.length; i++) {
  537. 				if (!imageComplete(nodes[i])) return false;
  538. 			}
  539. 			return true;
  540. 		}
  541.  
  542. 		//======================== 前置条件判断
  543. 		// 当前页码
  544. 		const nodes = u.queryAll(select);
  545. 		let length = nodes.length;
  546. 		const k_page_no = Number(localStorage.getItem('k_page_no')) || 0;
  547.  
  548. 		// 多增加一页码，防止缺页
  549. 		if (k_total % k_page_size === 0 && k_total != 0) { // 满足分页条件
  550. 			download().then(() => {
  551. 				localStorage.setItem('k_count', k_count + 1);
  552. 				setTimeout(() => {
  553. 					window.location.reload()
  554. 				}, 2000)
  555. 			});
  556. 			return;
  557. 		}
  558. 		let conditions = false;
  559. 		let currentNode = undefined;
  560. 		try {
  561. 			let node = nodes[k_page_no];
  562. 			if (host.includes(domain.wqxuetang) || host.includes(domain.nlibvpn)) {
  563. 				conditions = nodeComplete(node.children);
  564. 				currentNode = node;
  565. 			} else if (host.includes(domain.ebook)) {
  566. 				const img = node.querySelector('img')
  567. 				conditions = isVisible(node) && img;
  568. 				currentNode = img;
  569. 			} else if (host.includes(domain.zjjd)) {
  570. 				const img = node.querySelector('img')
  571. 				conditions = isVisible(node) && img && imageComplete(img)
  572. 				currentNode = img;
  573. 			} else if (host.includes(domain.elib)) {
  574. 				// pdf_page_5
  575. 				length = Number(document.querySelector('.pdf-top-page').lastElementChild.textContent);
  576. 				node = u.query('#pdf_page_' + k_page_no)
  577. 				// 等待 2 秒，让页面进行刷新
  578. 				if (!node) {
  579. 					await new Promise(resolve => {
  580. 						setTimeout(() => {
  581. 							node = u.query('#pdf_page_' + k_page_no);
  582. 							console.log('等待')
  583. 							resolve()
  584. 						}, 2000)
  585. 					})
  586. 				}
  587. 				const img = node.querySelector('img')
  588. 				conditions = img && imageComplete(img)
  589. 				currentNode = img;
  590. 			} else if (host.includes(domain.keledge)) {
  591. 				const canvas = node.querySelector('canvas')
  592. 				if (node.style.length && canvas) {
  593. 					conditions = true;
  594. 				} else {
  595. 					conditions = false;
  596. 				}
  597. 				currentNode = canvas;
  598. 			} else if (host.includes(domain.xianxiao)) {
  599. 				const canvas = node.querySelector('canvas')
  600. 				conditions = isVisible(node) && canvas
  601. 				currentNode = canvas;
  602. 			} else if (host.includes(domain.cmpkgs) || host.includes(domain.zslib) || host.includes(domain
  603. 					.cxstar)) {
  604. 				const canvas = node.querySelector('canvas')
  605. 				conditions = isVisible(node) && canvas
  606. 				currentNode = canvas;
  607. 			} else if (host.includes(domain.sklib)) {
  608. 				const canvas = node.querySelector('canvas')
  609. 				const dataLoaded = u.attr(node, 'data-loaded')
  610. 				if (dataLoaded && canvas) {
  611. 					conditions = true
  612. 					currentNode = canvas;
  613. 				}
  614.  
  615. 			}
  616. 			if (conditions && currentNode) {
  617. 				// 保存
  618. 				await saveImagePDF(currentNode, k_page_no)
  619. 				// 滚动到下一个范围
  620. 				if (k_page_no !== length - 1) {
  621. 					if (host.includes(domain.elib)) {
  622. 						const idStr =`#pdf_page_${Number(k_page_no) + 1}`;
  623. 						const scrollNode = u.query(idStr)
  624. 						scrollNode.scrollIntoView({
  625. 							behavior: "smooth"
  626. 						});
  627. 					} else {
  628. 						nodes[k_page_no + 1].scrollIntoView({
  629. 							behavior: "smooth"
  630. 						});
  631. 					}
  632. 				}
  633.  
  634. 			} else {
  635. 				if (host.includes(domain.elib)) {
  636. 					node.scrollIntoView({
  637. 						behavior: "smooth"
  638. 					});
  639. 				} else {
  640. 					nodes[k_page_no].scrollIntoView({
  641. 						behavior: "smooth"
  642. 					});
  643. 				}
  644. 			}
  645. 			u.preview(k_page_no, length);
  646. 		} catch (e) {
  647. 			console.error(e);
  648. 			u.preview(-1);
  649. 			download().then(() => {
  650. 				handleClean();
  651. 			})
  652. 			return;
  653. 		}
  654. 		MF_loginfo()
  655.  
  656. 		if (k_page_no !== length) { // 继续执行
  657. 			setTimeout(async () => {
  658. 				await autoPager()
  659. 				console.log(loading, 'ms 后执行');
  660. 			}, loading)
  661. 		}
  662. 	}
  663.  
  664.  
  665. 	/**
  666. 	 * @description 下载 PDF
  667. 	 * @author Mr.Fang
  668. 	 * @time 2024年2月2日
  669. 	 */
  670. 	const download = () => {
  671. 		after()
  672.  
  673. 		// 下载 PDF 文件
  674. 		return doc.save(`${title}_${k_count}.pdf`, {
  675. 			returnPromise: true
  676. 		});
  677. 	}
  678.  
  679. 	/**
  680. 	 * @description 图片拼接转 blob
  681. 	 * @author Mr.Fang
  682. 	 * @time 2024年6月5日
  683. 	 * @param el 节点对象
  684. 	 * @returns {Promise<blob>}
  685. 	 */
  686. 	const MF_ImageJoinToBlob = (el) => {
  687. 		return new Promise((resolve, reject) => {
  688. 			const children = el.children;
  689. 			const {
  690. 				naturalWidth,
  691. 				naturalHeight
  692. 			} = children[0];
  693. 			// 1、创建画布
  694. 			let canvas = u.createEl('', 'canvas');
  695. 			canvas.width = naturalWidth * 6;
  696. 			canvas.height = naturalHeight;
  697. 			const ctx = canvas.getContext('2d');
  698. 			// 2、获取所有图片节点
  699. 			const listData = []
  700. 			for (var i = 0; i < children.length; i++) {
  701. 				const img = children[i];
  702. 				const left = img.style.left.replace('px', '')
  703. 				listData.push({
  704. 					index: i,
  705. 					left: Number(left)
  706. 				})
  707. 			}
  708. 			listData.sort((a, b) => a.left - b.left);
  709. 			// 3、遍历绘制画布
  710. 			for (var i = 0; i < listData.length; i++) {
  711. 				const img = children[listData[i].index];
  712. 				ctx.drawImage(img, i * naturalWidth, 0, naturalWidth, naturalHeight);
  713. 			}
  714. 			resolve(canvas)
  715. 		})
  716. 	}
  717.  
  718. 	const MF_NodeToCanvas = (node) => {
  719. 		return new Promise((resolve) => {
  720. 			html2canvas(node, {
  721. 				useCORS: true,
  722. 				logging: true,
  723. 			}).then(function(canvas) {
  724. 				resolve(canvas);
  725. 			});
  726. 		})
  727. 	}
  728. 	const MF_ImageToCanvas = (image) => {
  729. 		return new Promise((resolve, reject) => {
  730. 			const canvas = u.createEl('', 'canvas');
  731. 			const {
  732. 				naturalWidth: width,
  733. 				naturalHeight: height
  734. 			} = image;
  735. 			canvas.width = width;
  736. 			canvas.height = height;
  737. 			let ctx = canvas.getContext('2d');
  738. 			ctx.fillStyle = '#FFFFFF';
  739. 			ctx.fillRect(0, 0, width, height);
  740. 			ctx.drawImage(image, 0, 0, width, height);
  741. 			resolve(canvas);
  742. 		})
  743. 	}
  744. 	/**
  745. 	 * @description 加载图片
  746. 	 * @author Mr.Fang
  747. 	 * @time 2024年1月20日18:05:49
  748. 	 * @param src 图片地址
  749. 	 * @returns {Promise<unknown>}
  750. 	 */
  751. 	const MF_ImageToBase64 = (src) => {
  752. 		return new Promise((resolve, reject) => {
  753. 			const image = new Image();
  754. 			image.onload = function() {
  755. 				try {
  756. 					const canvas = u.createEl('', 'canvas');
  757. 					const {
  758. 						naturalWidth: width,
  759. 						naturalHeight: height
  760. 					} = image;
  761. 					canvas.width = width;
  762. 					canvas.height = height;
  763. 					let ctx = canvas.getContext('2d');
  764. 					ctx.fillStyle = '#FFFFFF';
  765. 					ctx.fillRect(0, 0, width, height);
  766. 					ctx.drawImage(image, 0, 0, width, height);
  767. 					resolve(canvas);
  768. 				} catch (e) {
  769. 					console.error(e);
  770. 					reject(e);
  771. 				}
  772. 			}
  773. 			image.onerror = reject;
  774. 			image.src = src;
  775. 		})
  776. 	}
  777.  
  778. 	/**
  779. 	 * @description 将 blob 对象转 uint8Array
  780. 	 * @author Mr.Fang
  781. 	 * @time 2024年5月27日
  782. 	 * @param {Object} blob 图片对象
  783. 	 * @returns {Promise<Uint8Array>}
  784. 	 */
  785. 	const MF_BlobToUint8Array = (blob) => {
  786. 		return new Promise((resolve, reject) => {
  787. 			const fileReader = new FileReader();
  788. 			fileReader.onload = function() {
  789. 				resolve(new Uint8Array(this.result));
  790. 			};
  791. 			fileReader.onerror = function(error) {
  792. 				reject(error);
  793. 			};
  794. 			fileReader.readAsArrayBuffer(blob);
  795. 		});
  796. 	}
  797.  
  798. 	/**
  799. 	 * @description 画布输出 blob 对象
  800. 	 * @author Mr.Fang
  801. 	 * @time 2024年1月20日18:05:49
  802. 	 * @param src 图片地址
  803. 	 * @returns {Promise<Object>}
  804. 	 */
  805. 	const MF_CanvasToBase64 = (canvas) => {
  806. 		return new Promise((resolve, reject) => {
  807. 			const {
  808. 				width,
  809. 				height
  810. 			} = canvas;
  811. 			canvas.toBlob(
  812. 				(blob) => {
  813. 					resolve({
  814. 						blob,
  815. 						width,
  816. 						height
  817. 					});
  818. 				},
  819. 				"image/png",
  820. 				1,
  821. 			);
  822. 		})
  823. 	}
  824. })();