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Picviewer CE+ PDF 扩展

取代 ZIP， 打包下载时下载为 PDF

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  1. // ==UserScript==
  2. // @name         Picviewer CE+ PDF addon
  3. // @name:zh-CN   Picviewer CE+ PDF 扩展
  4. // @name:zh-TW   Picviewer CE+ PDF 擴充
  5. // @namespace    https://github.com/hoothin/UserScripts
  6. // @version      2024-06-29
  7. // @description  Batch Download as PDF instead of ZIP
  8. // @description:zh-CN   取代 ZIP， 打包下载时下载为 PDF
  9. // @description:zh-TW   取代 ZIP， 打包下載時下載為 PDF
  10. // @author       hoothin
  11. // @match        *://*/*
  12. // @icon         data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAMAAADXqc3KAAAAV1BMVEUAAAD////29vbKysoqKioiIiKysrKhoaGTk5N9fX3z8/Pv7+/r6+vk5OTb29vOzs6Ojo5UVFQzMzMZGRkREREMDAy4uLisrKylpaV4eHhkZGRPT08/Pz/IfxjQAAAAgklEQVQoz53RRw7DIBBAUb5pxr2m3/+ckfDImwyJlL9DDzQgDIUMRu1vWOxTBdeM+onApENF0qHjpkOk2VTwLVEF40Kbfj1wK8AVu2pQA1aBBYDHJ1wy9Cf4cXD5chzNAvsAnc8TjoLAhIzsBao9w1rlVTIvkOYMd9nm6xPi168t9AYkbANdajpjcwAAAABJRU5ErkJggg==
  13. // @grant        unsafeWindow
  14. // @grant        GM_registerMenuCommand
  15. // @grant        GM_unregisterMenuCommand
  16. // @grant        GM_getValue
  17. // @grant        GM_setValue
  18. // @require      https://unpkg.com/jspdf@latest/dist/jspdf.umd.min.js
  19. // ==/UserScript==
  20.  
  21. (function() {
  22.     'use strict';
  23.     async function blobToDataURL(blob) {
  24.         return new Promise((resolve) => {
  25.             setTimeout(() => {
  26.                 var a = new FileReader();
  27.                 a.readAsDataURL(blob);
  28.                 a.onload = function (e) {
  29.                     resolve(e.target.result);
  30.                 };
  31.                 a.onerror = function (e) {
  32.                     resolve(null);
  33.                 };
  34.             }, 0);
  35.         });
  36.     }
  37.  
  38.     function img2pdf(pdfName) {
  39.         if (!(this instanceof img2pdf)) {
  40.             return new img2pdf();
  41.         }
  42.         this.fileList = [];
  43.         this.file = async (fileName, blob) => {
  44.             this.fileList.push([fileName, blob]);
  45.         };
  46.         this.generateAsync = async (config, progress) => {
  47.             const pdf = new window.jspdf.jsPDF();
  48.             const fileLength = this.fileList.length;
  49.             for (const [key, param] of this.fileList.entries()) {
  50.                 let fileName = param[0];
  51.                 let blob = param[1];
  52.                 if (!blob && this.fileList.length === 1) {
  53.                     fileName = this.fileList[0][0];
  54.                     blob = this.fileList[0][1];
  55.                 }
  56.                 try {
  57.                     let dataUrl = await blobToDataURL(blob);
  58.                     const imgProps = pdf.getImageProperties(dataUrl);
  59.                     const imgWidth = pdf.internal.pageSize.getWidth();
  60.                     const pageHeight = pdf.internal.pageSize.getHeight();
  61.                     const imgHeight = imgProps.height * imgWidth / imgProps.width;
  62.                     let heightLeft = imgHeight;
  63.                     let position = 0;
  64.  
  65.                     pdf.addImage(dataUrl, blob.type, 0, position, imgWidth, imgHeight);
  66.                     heightLeft -= pageHeight;
  67.  
  68.                     while (heightLeft >= 0) {
  69.                         position -= pageHeight;
  70.                         pdf.addPage();
  71.                         pdf.addImage(dataUrl, blob.type, 0, position, imgWidth, imgHeight);
  72.                         heightLeft -= pageHeight;
  73.                     }
  74.  
  75.                     progress({percent: (key + 1) / fileLength * 100, currentFile: fileName});
  76.                 } catch(e) {
  77.                     console.log(e);
  78.                 }
  79.                 if (key + 1 < fileLength) {
  80.                     pdf.addPage();
  81.                 }
  82.             }
  83.             pdf.save(pdfName);
  84.         };
  85.     }
  86.  
  87.     const _unsafeWindow = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
  88.     let disabled = !!GM_getValue("pvcep_pdf_disabled"), registerId;
  89.     function registerMenuCommand() {
  90.         if (disabled) {
  91.             _unsafeWindow.pvcepimg2pdf = null;
  92.         } else _unsafeWindow.pvcepimg2pdf = img2pdf;
  93.         registerId = GM_registerMenuCommand(disabled ? "❌ Disabled" : "✅ Enabled", () => {
  94.             GM_unregisterMenuCommand(registerId);
  95.             disabled = !disabled;
  96.             GM_setValue("pvcep_pdf_disabled", disabled);
  97.             registerMenuCommand();
  98.         });
  99.     }
  100.     registerMenuCommand();
  101. })();