fix: handle multi-channel TIFF formats and add compression options
Add PDF quality selector (high/medium/low) with JPEG compression.
This commit is contained in:
alam00000
@@ -1,200 +1,239 @@
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import { showLoader, hideLoader, showAlert } from '../ui.js';
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import { downloadFile, formatBytes, readFileAsArrayBuffer } from '../utils/helpers.js';
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import {
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downloadFile,
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formatBytes,
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readFileAsArrayBuffer,
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} from '../utils/helpers.js';
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import { createIcons, icons } from 'lucide';
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import { PDFDocument as PDFLibDocument } from 'pdf-lib';
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import { decode } from 'tiff';
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import { tiffIfdToRgba } from '../utils/tiff-utils.js';
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let files: File[] = [];
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const updateUI = () => {
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const fileDisplayArea = document.getElementById('file-display-area');
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const fileControls = document.getElementById('file-controls');
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const processBtn = document.getElementById('process-btn');
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const fileDisplayArea = document.getElementById('file-display-area');
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const fileControls = document.getElementById('file-controls');
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const processBtn = document.getElementById('process-btn');
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if (!fileDisplayArea || !fileControls || !processBtn) return;
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const optionsPanel = document.getElementById('tiff-options');
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fileDisplayArea.innerHTML = '';
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if (!fileDisplayArea || !fileControls || !processBtn) return;
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if (files.length > 0) {
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fileControls.classList.remove('hidden');
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processBtn.classList.remove('hidden');
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fileDisplayArea.innerHTML = '';
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files.forEach((file, index) => {
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const fileDiv = document.createElement('div');
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fileDiv.className = 'flex items-center justify-between bg-gray-700 p-3 rounded-lg text-sm';
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if (files.length > 0) {
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fileControls.classList.remove('hidden');
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processBtn.classList.remove('hidden');
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optionsPanel?.classList.remove('hidden');
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const infoContainer = document.createElement('div');
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infoContainer.className = 'flex items-center gap-2 overflow-hidden';
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files.forEach((file, index) => {
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const fileDiv = document.createElement('div');
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fileDiv.className =
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'flex items-center justify-between bg-gray-700 p-3 rounded-lg text-sm';
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const nameSpan = document.createElement('span');
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nameSpan.className = 'truncate font-medium text-gray-200';
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nameSpan.textContent = file.name;
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const infoContainer = document.createElement('div');
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infoContainer.className = 'flex items-center gap-2 overflow-hidden';
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const sizeSpan = document.createElement('span');
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sizeSpan.className = 'flex-shrink-0 text-gray-400 text-xs';
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sizeSpan.textContent = `(${formatBytes(file.size)})`;
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const nameSpan = document.createElement('span');
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nameSpan.className = 'truncate font-medium text-gray-200';
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nameSpan.textContent = file.name;
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infoContainer.append(nameSpan, sizeSpan);
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const sizeSpan = document.createElement('span');
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sizeSpan.className = 'flex-shrink-0 text-gray-400 text-xs';
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sizeSpan.textContent = `(${formatBytes(file.size)})`;
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const removeBtn = document.createElement('button');
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removeBtn.className = 'ml-4 text-red-400 hover:text-red-300 flex-shrink-0';
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removeBtn.innerHTML = '<i data-lucide="trash-2" class="w-4 h-4"></i>';
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removeBtn.onclick = () => {
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files = files.filter((_, i) => i !== index);
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updateUI();
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};
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infoContainer.append(nameSpan, sizeSpan);
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fileDiv.append(infoContainer, removeBtn);
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fileDisplayArea.appendChild(fileDiv);
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});
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createIcons({ icons });
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} else {
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fileControls.classList.add('hidden');
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processBtn.classList.add('hidden');
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}
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const removeBtn = document.createElement('button');
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removeBtn.className =
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'ml-4 text-red-400 hover:text-red-300 flex-shrink-0';
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removeBtn.innerHTML = '<i data-lucide="trash-2" class="w-4 h-4"></i>';
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removeBtn.onclick = () => {
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files = files.filter((_, i) => i !== index);
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updateUI();
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};
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fileDiv.append(infoContainer, removeBtn);
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fileDisplayArea.appendChild(fileDiv);
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});
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createIcons({ icons });
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} else {
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fileControls.classList.add('hidden');
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processBtn.classList.add('hidden');
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optionsPanel?.classList.add('hidden');
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}
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};
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const resetState = () => {
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files = [];
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updateUI();
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files = [];
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updateUI();
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};
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async function convert() {
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if (files.length === 0) {
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showAlert('No Files', 'Please select at least one TIFF file.');
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return;
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}
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showLoader('Converting TIFF to PDF...');
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try {
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const pdfDoc = await PDFLibDocument.create();
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for (const file of files) {
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const tiffBytes = await readFileAsArrayBuffer(file);
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const ifds = decode(tiffBytes as ArrayBuffer);
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if (files.length === 0) {
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showAlert('No Files', 'Please select at least one TIFF file.');
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return;
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}
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const qualitySelect = document.getElementById(
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'tiff-pdf-quality'
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) as HTMLSelectElement;
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const quality = qualitySelect?.value || 'medium';
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const jpegQualityMap: Record<string, number> = {
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high: 0.92,
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medium: 0.75,
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low: 0.5,
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};
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const useJpeg = quality !== 'high';
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const jpegQuality = jpegQualityMap[quality] || 0.75;
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for (const ifd of ifds) {
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const width = ifd.width;
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const height = ifd.height;
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const rgba = ifd.data;
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showLoader('Converting TIFF to PDF...');
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try {
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const pdfDoc = await PDFLibDocument.create();
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for (const file of files) {
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const tiffBytes = await readFileAsArrayBuffer(file);
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const ifds = decode(tiffBytes as ArrayBuffer);
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const canvas = document.createElement('canvas');
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canvas.width = width;
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canvas.height = height;
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const ctx = canvas.getContext('2d');
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if (!ctx) continue;
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for (const ifd of ifds) {
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const width = ifd.width;
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const height = ifd.height;
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const imageData = ctx.createImageData(width, height);
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for (let i = 0; i < rgba.length; i++) {
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imageData.data[i] = rgba[i];
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}
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ctx.putImageData(imageData, 0, 0);
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const canvas = document.createElement('canvas');
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canvas.width = width;
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canvas.height = height;
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const ctx = canvas.getContext('2d');
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if (!ctx) continue;
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const pngBlob = await new Promise<Blob | null>((res) =>
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canvas.toBlob(res, 'image/png')
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);
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if (!pngBlob) continue;
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const pngBytes = await pngBlob.arrayBuffer();
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const pngImage = await pdfDoc.embedPng(pngBytes);
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const page = pdfDoc.addPage([pngImage.width, pngImage.height]);
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page.drawImage(pngImage, {
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x: 0,
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y: 0,
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width: pngImage.width,
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height: pngImage.height,
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});
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}
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}
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const pdfBytes = await pdfDoc.save();
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downloadFile(
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new Blob([new Uint8Array(pdfBytes)], { type: 'application/pdf' }),
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'from_tiff.pdf'
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const rgba = tiffIfdToRgba(
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ifd.data,
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width,
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height,
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ifd.samplesPerPixel || 1,
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ifd.type
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);
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showAlert('Success', 'PDF created successfully!', 'success', () => {
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resetState();
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const imageData = ctx.createImageData(width, height);
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imageData.data.set(rgba);
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ctx.putImageData(imageData, 0, 0);
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const blob = await new Promise<Blob | null>((res) =>
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canvas.toBlob(
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res,
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useJpeg ? 'image/jpeg' : 'image/png',
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useJpeg ? jpegQuality : undefined
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)
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);
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if (!blob) continue;
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canvas.width = 0;
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canvas.height = 0;
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const imgBytes = await blob.arrayBuffer();
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const image = useJpeg
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? await pdfDoc.embedJpg(imgBytes)
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: await pdfDoc.embedPng(imgBytes);
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const page = pdfDoc.addPage([image.width, image.height]);
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page.drawImage(image, {
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x: 0,
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y: 0,
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width: image.width,
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height: image.height,
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});
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} catch (e) {
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console.error(e);
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showAlert(
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'Error',
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'Failed to convert TIFF to PDF. One of the files may be invalid.'
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);
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} finally {
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hideLoader();
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}
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}
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const pdfBytes = await pdfDoc.save();
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downloadFile(
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new Blob([new Uint8Array(pdfBytes)], { type: 'application/pdf' }),
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'from_tiff.pdf'
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);
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showAlert('Success', 'PDF created successfully!', 'success', () => {
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resetState();
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});
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} catch (e) {
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console.error(e);
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showAlert(
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'Error',
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'Failed to convert TIFF to PDF. One of the files may be invalid.'
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);
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} finally {
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hideLoader();
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}
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}
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document.addEventListener('DOMContentLoaded', () => {
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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const dropZone = document.getElementById('drop-zone');
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const addMoreBtn = document.getElementById('add-more-btn');
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const clearFilesBtn = document.getElementById('clear-files-btn');
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const processBtn = document.getElementById('process-btn');
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const backBtn = document.getElementById('back-to-tools');
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const fileInput = document.getElementById('file-input') as HTMLInputElement;
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const dropZone = document.getElementById('drop-zone');
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const addMoreBtn = document.getElementById('add-more-btn');
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const clearFilesBtn = document.getElementById('clear-files-btn');
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const processBtn = document.getElementById('process-btn');
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const backBtn = document.getElementById('back-to-tools');
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if (backBtn) {
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backBtn.addEventListener('click', () => {
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window.location.href = import.meta.env.BASE_URL;
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});
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if (backBtn) {
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backBtn.addEventListener('click', () => {
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window.location.href = import.meta.env.BASE_URL;
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});
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}
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const handleFileSelect = (newFiles: FileList | null) => {
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if (!newFiles || newFiles.length === 0) return;
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const validFiles = Array.from(newFiles).filter(
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(file) =>
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file.type === 'image/tiff' ||
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file.name.toLowerCase().endsWith('.tiff') ||
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file.name.toLowerCase().endsWith('.tif')
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);
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if (validFiles.length < newFiles.length) {
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showAlert(
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'Invalid Files',
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'Some files were skipped. Only TIFF files are allowed.'
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);
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}
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const handleFileSelect = (newFiles: FileList | null) => {
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if (!newFiles || newFiles.length === 0) return;
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const validFiles = Array.from(newFiles).filter(
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(file) =>
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file.type === 'image/tiff' ||
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file.name.toLowerCase().endsWith('.tiff') ||
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file.name.toLowerCase().endsWith('.tif')
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);
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if (validFiles.length < newFiles.length) {
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showAlert('Invalid Files', 'Some files were skipped. Only TIFF files are allowed.');
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}
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if (validFiles.length > 0) {
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files = [...files, ...validFiles];
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updateUI();
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}
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};
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if (fileInput && dropZone) {
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fileInput.addEventListener('change', (e) => {
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handleFileSelect((e.target as HTMLInputElement).files);
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});
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dropZone.addEventListener('dragover', (e) => {
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e.preventDefault();
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dropZone.classList.add('bg-gray-700');
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});
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dropZone.addEventListener('dragleave', (e) => {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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});
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dropZone.addEventListener('drop', (e) => {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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handleFileSelect(e.dataTransfer?.files ?? null);
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});
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fileInput.addEventListener('click', () => {
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fileInput.value = '';
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});
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if (validFiles.length > 0) {
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files = [...files, ...validFiles];
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updateUI();
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}
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};
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if (addMoreBtn) {
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addMoreBtn.addEventListener('click', () => {
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fileInput?.click();
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});
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}
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if (fileInput && dropZone) {
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fileInput.addEventListener('change', (e) => {
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handleFileSelect((e.target as HTMLInputElement).files);
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});
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if (clearFilesBtn) {
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clearFilesBtn.addEventListener('click', () => {
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resetState();
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});
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}
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dropZone.addEventListener('dragover', (e) => {
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e.preventDefault();
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dropZone.classList.add('bg-gray-700');
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});
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if (processBtn) {
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processBtn.addEventListener('click', convert);
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}
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dropZone.addEventListener('dragleave', (e) => {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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});
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dropZone.addEventListener('drop', (e) => {
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e.preventDefault();
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dropZone.classList.remove('bg-gray-700');
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handleFileSelect(e.dataTransfer?.files ?? null);
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});
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fileInput.addEventListener('click', () => {
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fileInput.value = '';
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});
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}
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if (addMoreBtn) {
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addMoreBtn.addEventListener('click', () => {
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fileInput?.click();
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});
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}
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if (clearFilesBtn) {
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clearFilesBtn.addEventListener('click', () => {
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resetState();
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});
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}
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if (processBtn) {
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processBtn.addEventListener('click', convert);
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}
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});
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