Batch Download as PDF instead of ZIP
// ==UserScript==
// @name Picviewer CE+ PDF addon
// @name:zh-CN Picviewer CE+ PDF 扩展
// @name:zh-TW Picviewer CE+ PDF 擴充
// @namespace https://github.com/hoothin/UserScripts
// @version 2024-06-29
// @description Batch Download as PDF instead of ZIP
// @description:zh-CN 取代 ZIP， 打包下载时下载为 PDF
// @description:zh-TW 取代 ZIP， 打包下載時下載為 PDF
// @author hoothin
// @match *://*/*
// @icon data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABgAAAAYCAMAAADXqc3KAAAAV1BMVEUAAAD////29vbKysoqKioiIiKysrKhoaGTk5N9fX3z8/Pv7+/r6+vk5OTb29vOzs6Ojo5UVFQzMzMZGRkREREMDAy4uLisrKylpaV4eHhkZGRPT08/Pz/IfxjQAAAAgklEQVQoz53RRw7DIBBAUb5pxr2m3/+ckfDImwyJlL9DDzQgDIUMRu1vWOxTBdeM+onApENF0qHjpkOk2VTwLVEF40Kbfj1wK8AVu2pQA1aBBYDHJ1wy9Cf4cXD5chzNAvsAnc8TjoLAhIzsBao9w1rlVTIvkOYMd9nm6xPi168t9AYkbANdajpjcwAAAABJRU5ErkJggg==
// @grant unsafeWindow
// @grant GM_registerMenuCommand
// @grant GM_unregisterMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// @require https://unpkg.com/jspdf@latest/dist/jspdf.umd.min.js
// ==/UserScript==
(function() {
'use strict';
async function blobToDataURL(blob) {
return new Promise((resolve) => {
setTimeout(() => {
var a = new FileReader();
a.readAsDataURL(blob);
a.onload = function (e) {
resolve(e.target.result);
};
a.onerror = function (e) {
resolve(null);
};
}, 0);
});
}
function img2pdf(pdfName) {
if (!(this instanceof img2pdf)) {
return new img2pdf();
}
this.fileList = [];
this.file = async (fileName, blob) => {
this.fileList.push([fileName, blob]);
};
this.generateAsync = async (config, progress) => {
const pdf = new window.jspdf.jsPDF();
const fileLength = this.fileList.length;
for (const [key, param] of this.fileList.entries()) {
let fileName = param[0];
let blob = param[1];
if (!blob && this.fileList.length === 1) {
fileName = this.fileList[0][0];
blob = this.fileList[0][1];
}
try {
let dataUrl = await blobToDataURL(blob);
const imgProps = pdf.getImageProperties(dataUrl);
const imgWidth = pdf.internal.pageSize.getWidth();
const pageHeight = pdf.internal.pageSize.getHeight();
const imgHeight = imgProps.height * imgWidth / imgProps.width;
let heightLeft = imgHeight;
let position = 0;
pdf.addImage(dataUrl, blob.type, 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
while (heightLeft >= 0) {
position -= pageHeight;
pdf.addPage();
pdf.addImage(dataUrl, blob.type, 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
}
progress({percent: (key + 1) / fileLength * 100, currentFile: fileName});
} catch(e) {
console.log(e);
}
if (key + 1 < fileLength) {
pdf.addPage();
}
}
pdf.save(pdfName);
};
}
const _unsafeWindow = typeof unsafeWindow === 'undefined' ? window : unsafeWindow;
let disabled = !!GM_getValue("pvcep_pdf_disabled"), registerId;
function registerMenuCommand() {
if (disabled) {
_unsafeWindow.pvcepimg2pdf = null;
} else _unsafeWindow.pvcepimg2pdf = img2pdf;
registerId = GM_registerMenuCommand(disabled ? "❌ Disabled" : "✅ Enabled", () => {
GM_unregisterMenuCommand(registerId);
disabled = !disabled;
GM_setValue("pvcep_pdf_disabled", disabled);
registerMenuCommand();
});
}
registerMenuCommand();
})();