Add Decrypt to all relevant pages

This commit is contained in:
Reece Browne
2024-12-10 16:39:06 +00:00
parent 1d6511b043
commit ef8231de3a
11 changed files with 633 additions and 584 deletions

View File

@@ -204,8 +204,7 @@
<script type="module" th:src="@{'/pdfjs-legacy/pdf.mjs'}"></script>
<script th:src="@{'/js/downloader.js'}"></script>
<script>
window.translations = {
decrypt: {
window.decrypt = {
passwordPrompt: '[[#{decrypt.passwordPrompt}]]',
cancelled: '[[#{decrypt.cancelled}]]',
noPassword: '[[#{decrypt.noPassword}]]',
@@ -214,7 +213,6 @@
unexpectedError: '[[#{decrypt.unexpectedError}]]',
serverError: '[[#{decrypt.serverError}]]',
success: '[[#{decrypt.success}]]',
}
};</script>
<div class="custom-file-chooser mb-3" th:attr="data-bs-unique-id=${name}, data-bs-element-id=${name+'-input'}, data-bs-element-container-id=${name+'-input-container'}, data-bs-files-selected=#{filesSelected}, data-bs-pdf-prompt=#{pdfPrompt}">
<div class="mb-3 d-flex flex-row justify-content-center align-items-center flex-wrap input-container" th:name="${name}+'-input'" th:id="${name}+'-input-container'" th:data-text="#{fileChooser.hoveredDragAndDrop}">

View File

@@ -55,247 +55,7 @@
</form>
<script type="module" th:src="@{'/pdfjs-legacy/pdf.mjs'}"></script>
<script th:src="@{'/js/thirdParty/pdf-lib.min.js'}"></script>
<script>
var canvas = document.getElementById('contrast-pdf-canvas');
var context = canvas.getContext('2d');
var originalImageData = null;
var allPages = [];
var pdfDoc = null;
var pdf = null; // This is the current PDF document
async function renderPDFAndSaveOriginalImageData(file) {
var fileReader = new FileReader();
fileReader.onload = async function() {
var data = new Uint8Array(this.result);
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs'
pdf = await pdfjsLib.getDocument({data: data}).promise;
// Get the number of pages in the PDF
var numPages = pdf.numPages;
allPages = Array.from({length: numPages}, (_, i) => i + 1);
// Create a new PDF document
pdfDoc = await PDFLib.PDFDocument.create();
// Render the first page in the viewer
await renderPageAndAdjustImageProperties(1);
document.getElementById("sliders-container").style.display = "block";
};
fileReader.readAsArrayBuffer(file);
}
// This function is now async and returns a promise
function renderPageAndAdjustImageProperties(pageNum) {
return new Promise(async function(resolve, reject) {
var page = await pdf.getPage(pageNum);
var scale = 1.5;
var viewport = page.getViewport({ scale: scale });
canvas.height = viewport.height;
canvas.width = viewport.width;
var renderContext = {
canvasContext: context,
viewport: viewport
};
var renderTask = page.render(renderContext);
renderTask.promise.then(function () {
originalImageData = context.getImageData(0, 0, canvas.width, canvas.height);
adjustImageProperties();
resolve();
});
canvas.classList.add("fixed-shadow-canvas");
});
}
function adjustImageProperties() {
var contrast = parseFloat(document.getElementById('contrast-slider').value);
var brightness = parseFloat(document.getElementById('brightness-slider').value);
var saturation = parseFloat(document.getElementById('saturation-slider').value);
contrast /= 100; // normalize to range [0, 2]
brightness /= 100; // normalize to range [0, 2]
saturation /= 100; // normalize to range [0, 2]
if (originalImageData) {
var newImageData = context.createImageData(originalImageData.width, originalImageData.height);
newImageData.data.set(originalImageData.data);
for(var i=0; i<newImageData.data.length; i+=4) {
var r = newImageData.data[i];
var g = newImageData.data[i+1];
var b = newImageData.data[i+2];
// Adjust contrast
r = adjustContrastForPixel(r, contrast);
g = adjustContrastForPixel(g, contrast);
b = adjustContrastForPixel(b, contrast);
// Adjust brightness
r = adjustBrightnessForPixel(r, brightness);
g = adjustBrightnessForPixel(g, brightness);
b = adjustBrightnessForPixel(b, brightness);
// Adjust saturation
var rgb = adjustSaturationForPixel(r, g, b, saturation);
newImageData.data[i] = rgb[0];
newImageData.data[i+1] = rgb[1];
newImageData.data[i+2] = rgb[2];
}
context.putImageData(newImageData, 0, 0);
}
}
function rgbToHsl(r, g, b) {
r /= 255, g /= 255, b /= 255;
var max = Math.max(r, g, b), min = Math.min(r, g, b);
var h, s, l = (max + min) / 2;
if (max === min) {
h = s = 0; // achromatic
} else {
var d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
switch (max) {
case r: h = (g - b) / d + (g < b ? 6 : 0); break;
case g: h = (b - r) / d + 2; break;
case b: h = (r - g) / d + 4; break;
}
h /= 6;
}
return [h, s, l];
}
function hslToRgb(h, s, l) {
var r, g, b;
if (s === 0) {
r = g = b = l; // achromatic
} else {
var hue2rgb = function hue2rgb(p, q, t) {
if (t < 0) t += 1;
if (t > 1) t -= 1;
if (t < 1 / 6) return p + (q - p) * 6 * t;
if (t < 1 / 2) return q;
if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
return p;
};
var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
var p = 2 * l - q;
r = hue2rgb(p, q, h + 1 / 3);
g = hue2rgb(p, q, h);
b = hue2rgb(p, q, h - 1 / 3);
}
return [r * 255, g * 255, b * 255];
}
function adjustContrastForPixel(pixel, contrast) {
// Normalize to range [-0.5, 0.5]
var normalized = pixel / 255 - 0.5;
// Apply contrast
normalized *= contrast;
// Denormalize back to [0, 255]
return (normalized + 0.5) * 255;
}
function clamp(value, min, max) {
return Math.min(Math.max(value, min), max);
}
function adjustSaturationForPixel(r, g, b, saturation) {
var hsl = rgbToHsl(r, g, b);
// Adjust saturation
hsl[1] = clamp(hsl[1] * saturation, 0, 1);
// Convert back to RGB
var rgb = hslToRgb(hsl[0], hsl[1], hsl[2]);
// Return adjusted RGB values
return rgb;
}
function adjustBrightnessForPixel(pixel, brightness) {
return Math.max(0, Math.min(255, pixel * brightness));
}
let inputFileName = '';
async function downloadPDF() {
for (var i = 0; i < allPages.length; i++) {
await renderPageAndAdjustImageProperties(allPages[i]);
const pngImageBytes = canvas.toDataURL('image/png');
const pngImage = await pdfDoc.embedPng(pngImageBytes);
const pngDims = pngImage.scale(1);
// Create a blank page matching the dimensions of the image
const page = pdfDoc.addPage([pngDims.width, pngDims.height]);
// Draw the PNG image
page.drawImage(pngImage, {
x: 0,
y: 0,
width: pngDims.width,
height: pngDims.height
});
}
// Serialize the PDFDocument to bytes (a Uint8Array)
const pdfBytes = await pdfDoc.save();
// Create a Blob
const blob = new Blob([pdfBytes.buffer], {type: "application/pdf"});
// Create download link
const downloadLink = document.createElement('a');
downloadLink.href = URL.createObjectURL(blob);
let newFileName = inputFileName ? inputFileName.replace('.pdf', '') : 'download';
newFileName += '_adjusted_color.pdf';
downloadLink.download = newFileName;
downloadLink.click();
// After download, reset the viewer and clear stored data
allPages = []; // Clear the pages
originalImageData = null; // Clear the image data
// Go back to page 1 and render it in the viewer
if (pdf !== null) {
renderPageAndAdjustImageProperties(1);
}
}
// Event listeners
document.getElementById('fileInput-input').addEventListener('change', function(e) {
if (e.target.files.length > 0) {
inputFileName = e.target.files[0].name;
renderPDFAndSaveOriginalImageData(e.target.files[0]);
}
});
document.getElementById('contrast-slider').addEventListener('input', function() {
document.getElementById('contrast-val').textContent = this.value;
adjustImageProperties();
});
document.getElementById('brightness-slider').addEventListener('input', function() {
document.getElementById('brightness-val').textContent = this.value;
adjustImageProperties();
});
document.getElementById('saturation-slider').addEventListener('input', function() {
document.getElementById('saturation-val').textContent = this.value;
adjustImageProperties();
});
document.getElementById('download-button').addEventListener('click', function() {
downloadPDF();
});
</script>
<script type="module" th:src="@{'/js/pages/adjust-contrast.js'}"></script>
</div>
</div>
</div>

View File

@@ -163,17 +163,18 @@
dragDropMessage:'[[#{multiTool.dragDropMessage}]]',
undo: '[[#{multiTool.undo}]]',
redo: '[[#{multiTool.redo}]]',
passwordPrompt: '[[#{decrypt.passwordPrompt}]]',
cancelled: '[[#{decrypt.cancelled}]]',
noPassword: '[[#{decrypt.noPassword}]]',
invalidPassword: '[[#{decrypt.invalidPassword}]]',
invalidPasswordHeader: '[[#{decrypt.invalidPasswordHeader}]]',
unexpectedError: '[[#{decrypt.unexpectedError}]]',
serverError: '[[#{decrypt.serverError}]]',
success: '[[#{decrypt.success}]]',
};
window.decrypt = {
passwordPrompt: '[[#{decrypt.passwordPrompt}]]',
cancelled: '[[#{decrypt.cancelled}]]',
noPassword: '[[#{decrypt.noPassword}]]',
invalidPassword: '[[#{decrypt.invalidPassword}]]',
invalidPasswordHeader: '[[#{decrypt.invalidPasswordHeader}]]',
unexpectedError: '[[#{decrypt.unexpectedError}]]',
serverError: '[[#{decrypt.serverError}]]',
success: '[[#{decrypt.success}]]',
}
const csvInput = document.getElementById("csv-input");
csvInput.addEventListener("keydown", function (event) {

View File

@@ -19,9 +19,10 @@
}
</style>
</th:block>
<script th:src="@{'/js/thirdParty/signature_pad.umd.min.js'}"></script>
<script th:src="@{'/js/thirdParty/interact.min.js'}"></script>
<script type="module" th:src="@{'/js/pages/sign.js'}"></script>
</head>
<body>
@@ -42,75 +43,6 @@
th:replace="~{fragments/common :: fileSelector(name='pdf-upload', multipleInputsForSingleRequest=false, disableMultipleFiles=true, accept='application/pdf')}">
</div>
<script type="module" th:src="@{'/pdfjs-legacy/pdf.mjs'}"></script>
<script>
let currentPreviewSrc = null;
function toggleSignatureView() {
const gridView = document.getElementById('gridView');
const listView = document.getElementById('listView');
const gridText = document.querySelector('.grid-view-text');
const listText = document.querySelector('.list-view-text');
if (gridView.style.display !== 'none') {
gridView.style.display = 'none';
listView.style.display = 'block';
gridText.style.display = 'none';
listText.style.display = 'inline';
} else {
gridView.style.display = 'block';
listView.style.display = 'none';
gridText.style.display = 'inline';
listText.style.display = 'none';
}
}
function previewSignature(element) {
const src = element.dataset.src;
currentPreviewSrc = src;
// Extract filename from the data source path
const filename = element.querySelector('.signature-list-name').textContent;
// Update preview modal
const previewImage = document.getElementById('previewImage');
const previewFileName = document.getElementById('previewFileName');
previewImage.src = src;
previewFileName.textContent = filename;
const modal = new bootstrap.Modal(document.getElementById('signaturePreview'));
modal.show();
}
function addSignatureFromPreview() {
if (currentPreviewSrc) {
DraggableUtils.createDraggableCanvasFromUrl(currentPreviewSrc);
bootstrap.Modal.getInstance(document.getElementById('signaturePreview')).hide();
}
}
let originalFileName = '';
document.querySelector('input[name=pdf-upload]').addEventListener('change', async (event) => {
const file = event.target.files[0];
if (file) {
originalFileName = file.name.replace(/\.[^/.]+$/, "");
const pdfData = await file.arrayBuffer();
pdfjsLib.GlobalWorkerOptions.workerSrc = './pdfjs-legacy/pdf.worker.mjs';
const pdfDoc = await pdfjsLib.getDocument({ data: pdfData }).promise;
await DraggableUtils.renderPage(pdfDoc, 0);
document.querySelectorAll(".show-on-file-selected").forEach(el => {
el.style.cssText = '';
});
}
});
document.addEventListener("DOMContentLoaded", () => {
document.querySelectorAll(".show-on-file-selected").forEach(el => {
el.style.cssText = "display:none !important";
});
});
</script>
<div class="tab-group show-on-file-selected">
<div class="tab-container" th:title="#{sign.upload}">
<div
@@ -237,123 +169,6 @@
</div>
</div>
</div>
<script>
const imageUpload = document.querySelector('input[name=image-upload]');
imageUpload.addEventListener('change', e => {
if (!e.target.files) return;
for (const imageFile of e.target.files) {
var reader = new FileReader();
reader.readAsDataURL(imageFile);
reader.onloadend = function (e) {
DraggableUtils.createDraggableCanvasFromUrl(e.target.result);
};
}
});
</script>
<script>
const signaturePadCanvas = document.getElementById('drawing-pad-canvas');
const signaturePad = new SignaturePad(signaturePadCanvas, {
minWidth: 1,
maxWidth: 2,
penColor: 'black',
});
function addDraggableFromPad() {
if (signaturePad.isEmpty()) return;
const startTime = Date.now();
const croppedDataUrl = getCroppedCanvasDataUrl(signaturePadCanvas);
console.log(Date.now() - startTime);
DraggableUtils.createDraggableCanvasFromUrl(croppedDataUrl);
}
function getCroppedCanvasDataUrl(canvas) {
let originalCtx = canvas.getContext('2d');
let originalWidth = canvas.width;
let originalHeight = canvas.height;
let imageData = originalCtx.getImageData(0, 0, originalWidth, originalHeight);
let minX = originalWidth + 1, maxX = -1, minY = originalHeight + 1, maxY = -1, x = 0, y = 0, currentPixelColorValueIndex;
for (y = 0; y < originalHeight; y++) {
for (x = 0; x < originalWidth; x++) {
currentPixelColorValueIndex = (y * originalWidth + x) * 4;
let currentPixelAlphaValue = imageData.data[currentPixelColorValueIndex + 3];
if (currentPixelAlphaValue > 0) {
if (minX > x) minX = x;
if (maxX < x) maxX = x;
if (minY > y) minY = y;
if (maxY < y) maxY = y;
}
}
}
let croppedWidth = maxX - minX;
let croppedHeight = maxY - minY;
if (croppedWidth < 0 || croppedHeight < 0) return null;
let cuttedImageData = originalCtx.getImageData(minX, minY, croppedWidth, croppedHeight);
let croppedCanvas = document.createElement('canvas'),
croppedCtx = croppedCanvas.getContext('2d');
croppedCanvas.width = croppedWidth;
croppedCanvas.height = croppedHeight;
croppedCtx.putImageData(cuttedImageData, 0, 0);
return croppedCanvas.toDataURL();
}
function resizeCanvas() {
var ratio = Math.max(window.devicePixelRatio || 1, 1);
var additionalFactor = 10;
signaturePadCanvas.width = signaturePadCanvas.offsetWidth * ratio * additionalFactor;
signaturePadCanvas.height = signaturePadCanvas.offsetHeight * ratio * additionalFactor;
signaturePadCanvas.getContext("2d").scale(ratio * additionalFactor, ratio * additionalFactor);
signaturePad.clear();
}
new IntersectionObserver((entries, observer) => {
if (entries.some(entry => entry.intersectionRatio > 0)) {
resizeCanvas();
}
}).observe(signaturePadCanvas);
new ResizeObserver(resizeCanvas).observe(signaturePadCanvas);
</script>
<script>
function addDraggableFromText() {
const sigText = document.getElementById('sigText').value;
const font = document.querySelector('select[name=font]').value;
const fontSize = 100;
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
ctx.font = `${fontSize}px ${font}`;
const textWidth = ctx.measureText(sigText).width;
const textHeight = fontSize;
let paragraphs = sigText.split(/\r?\n/);
canvas.width = textWidth;
canvas.height = paragraphs.length * textHeight * 1.35; // for tails
ctx.font = `${fontSize}px ${font}`;
ctx.textBaseline = 'top';
let y = 0;
paragraphs.forEach(paragraph => {
ctx.fillText(paragraph, 0, y);
y += fontSize;
});
const dataURL = canvas.toDataURL();
DraggableUtils.createDraggableCanvasFromUrl(dataURL);
}
</script>
<!-- draggables box -->
<div id="box-drag-container" class="show-on-file-selected">
<canvas id="pdf-canvas"></canvas>
@@ -410,35 +225,11 @@
</button>
</div>
</div>
<!-- download button -->
<div class="margin-auto-parent">
<button id="download-pdf" class="btn btn-primary mb-2 show-on-file-selected margin-center"
th:text="#{downloadPdf}"></button>
</div>
<script>
async function goToFirstOrLastPage(page) {
if (page) {
const lastPage = DraggableUtils.pdfDoc.numPages
await DraggableUtils.goToPage(lastPage - 1)
} else {
await DraggableUtils.goToPage(0)
}
}
</script>
<script>
document.getElementById("download-pdf").addEventListener('click', async () => {
const modifiedPdf = await DraggableUtils.getOverlayedPdfDocument();
const modifiedPdfBytes = await modifiedPdf.save();
const blob = new Blob([modifiedPdfBytes], { type: 'application/pdf' });
const link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.download = originalFileName + '_signed.pdf';
link.click();
});
</script>
</div>
</div>
</div>
@@ -447,6 +238,7 @@
</div>
<!-- Link the draggable.js file -->
<script th:src="@{'/js/draggable.js'}"></script>
</body>
</html>