// ==UserScript== // @name Book.ru - Скачать все страницы книги как один PDF // @namespace web.nextbyte.ai // @version 3.0 // @description Автоматически конвертирует все страницы книги в один большой PDF файл (вместо отдельных SVG) // @author NextByte // @match https://reader.new.book.ru/* // @grant none // @run-at document-end // @require https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js // ==/UserScript== (function() { 'use strict'; // Helper function to create download button function createDownloadButton() { const iconBtn = document.createElement('div'); iconBtn.className = 'btn header__icon-btn'; iconBtn.style.cssText = 'height: 35px; width: 35px;'; iconBtn.title = 'Скачать ВСЕ страницы книги как один PDF'; const titleContainer = document.createElement('div'); titleContainer.className = 'titleContainer'; const button = document.createElement('button'); button.className = 'btnButton'; button.style.cssText = 'height: 35px; max-height: 35px;'; // PDF icon for download button.innerHTML = ` `; button.addEventListener('click', handleDownload); titleContainer.appendChild(button); iconBtn.appendChild(titleContainer); return iconBtn; } // Function to wait for element function waitForElement(selector, timeout = 5000) { return new Promise((resolve, reject) => { if (document.querySelector(selector)) { return resolve(document.querySelector(selector)); } const observer = new MutationObserver(() => { if (document.querySelector(selector)) { observer.disconnect(); resolve(document.querySelector(selector)); } }); observer.observe(document.body, { childList: true, subtree: true }); setTimeout(() => { observer.disconnect(); reject(new Error('Timeout waiting for element: ' + selector)); }, timeout); }); } // Function to scroll to a page and wait for canvas to load async function scrollToPageAndWaitForCanvas(pageContainer, pageNumber, totalPages) { // Scroll the page into view pageContainer.scrollIntoView({ behavior: 'auto', block: 'center' }); // Wait a bit for rendering to start await new Promise(resolve => setTimeout(resolve, 100)); // Wait for canvas to appear in this page container const maxAttempts = 50; let attempts = 0; while (attempts < maxAttempts) { const canvas = pageContainer.querySelector('canvas.react-pdf__Page__canvas'); if (canvas && canvas.width > 0 && canvas.height > 0) { return canvas; } await new Promise(resolve => setTimeout(resolve, 100)); attempts++; } console.warn(`Canvas for page ${pageNumber} did not load`); return null; } // Update progress message function updateProgress(button, message) { const textSpan = button.querySelector('.progress-text'); if (textSpan) { textSpan.textContent = message; } } // Main download handler - download ALL pages as one PDF async function handleDownload() { const button = this; try { // Show progress const originalHTML = button.innerHTML; button.innerHTML = ` Загрузка... `; button.disabled = true; // Find all page containers const pageContainers = document.querySelectorAll('div.Page[data-page-id]'); const totalPages = pageContainers.length; if (totalPages === 0) { alert('Не найдено страниц для скачивания.'); button.innerHTML = originalHTML; button.disabled = false; return; } console.log(`Found ${totalPages} pages to process`); updateProgress(button, `Страниц: ${totalPages}`); // Get book title for filename const bookTitle = document.querySelector('#book-title')?.textContent || 'book'; const sanitizedTitle = bookTitle.replace(/[^a-zA-Zа-яА-Я0-9]/g, '_'); // Array to store all canvases and their page numbers const canvasData = []; // Scroll through all pages and collect canvases for (let i = 0; i < pageContainers.length; i++) { const pageContainer = pageContainers[i]; const pageNumber = parseInt(pageContainer.getAttribute('data-page-id')); updateProgress(button, `Загрузка ${i + 1}/${totalPages}`); try { const canvas = await scrollToPageAndWaitForCanvas(pageContainer, pageNumber, totalPages); if (canvas) { canvasData.push({ canvas, pageNumber }); console.log(`Captured page ${pageNumber} (${i + 1}/${totalPages})`); } } catch (error) { console.error(`Error loading page ${pageNumber}:`, error); } // Small delay between pages await new Promise(resolve => setTimeout(resolve, 50)); } if (canvasData.length === 0) { alert('Не удалось загрузить ни одной страницы.'); button.innerHTML = originalHTML; button.disabled = false; return; } console.log(`Successfully loaded ${canvasData.length} pages`); updateProgress(button, 'Создание PDF...'); // Create PDF using jsPDF const { jsPDF } = window.jspdf; // Get dimensions from first canvas const firstCanvas = canvasData[0].canvas; const pageWidth = firstCanvas.width; const pageHeight = firstCanvas.height; // Calculate PDF dimensions (convert pixels to mm at 72 DPI) const mmPerPx = 0.264583; // 1 pixel = 0.264583 mm at 72 DPI const pdfWidth = pageWidth * mmPerPx; const pdfHeight = pageHeight * mmPerPx; // Create PDF document with page size matching canvas const pdf = new jsPDF({ orientation: pdfWidth > pdfHeight ? 'landscape' : 'portrait', unit: 'mm', format: [pdfWidth, pdfHeight] }); // Add each page to PDF for (let i = 0; i < canvasData.length; i++) { const { canvas, pageNumber } = canvasData[i]; updateProgress(button, `PDF: ${i + 1}/${canvasData.length}`); // Convert canvas to image data URL const imgData = canvas.toDataURL('image/jpeg', 0.95); // Add new page if not first page if (i > 0) { pdf.addPage([pdfWidth, pdfHeight], pdfWidth > pdfHeight ? 'landscape' : 'portrait'); } // Add image to PDF page pdf.addImage(imgData, 'JPEG', 0, 0, pdfWidth, pdfHeight); console.log(`Added page ${pageNumber} to PDF (${i + 1}/${canvasData.length})`); // Small delay to prevent UI freezing await new Promise(resolve => setTimeout(resolve, 10)); } updateProgress(button, 'Сохранение PDF...'); // Save the PDF const filename = `${sanitizedTitle}.pdf`; pdf.save(filename); alert(`Успешно создан PDF из ${canvasData.length} страниц!\n\nФайл: ${filename}\nПроверьте папку загрузок.`); // Restore button button.innerHTML = originalHTML; button.disabled = false; } catch (error) { console.error('Error creating PDF:', error); alert('Ошибка при создании PDF: ' + error.message); button.innerHTML = ` `; button.disabled = false; } } // Wait for header to load and add button async function init() { try { // Wait for header to be available const iconsBlockRight = await waitForElement('.iconsBlockRight'); // Create and add the download button const downloadBtn = createDownloadButton(); iconsBlockRight.insertBefore(downloadBtn, iconsBlockRight.firstChild); console.log('Book.ru - Скачать как PDF: кнопка добавлена успешно'); } catch (error) { console.error('Failed to add download button:', error); } } // Initialize when DOM is ready if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init); } else { init(); } })();