<!DOCTYPE html>
<html th:lang="${#locale.language}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
<head>
<th:block th:insert="~{fragments/common :: head(title=#{sign.title}, header=#{sign.header})}"></th:block>
<script src="js/thirdParty/signature_pad.umd.min.js"></script>
<script src="js/thirdParty/interact.min.js"></script>
</head>
<th:block th:each="font : ${fonts}">
<style th:inline="text">
@font-face {
font-family: "[[${font.name}]]";
src: url('fonts/[[${font.name}]].[[${font.extension}]]') format('[[${font.type}]]');
}
#font-select option[value="[[${font.name}]]"] {
font-family: "[[${font.name}]]", cursive;
}
</style>
</th:block>
<style>
select#font-select, select#font-select option {
height: 60px; /* Adjust as needed */
font-size: 30px; /* Adjust as needed */
}
</style>
<body>
<div id="page-container">
<div id="content-wrap">
<div th:insert="~{fragments/navbar.html :: navbar}"></div>
<br> <br>
<div class="container">
<div class="row justify-content-center">
<div class="col-md-6">
<h2 th:text="#{sign.header}"></h2>
<!-- pdf selector -->
<div th:replace="~{fragments/common :: fileSelector(name='pdf-upload', multiple=false, accept='application/pdf')}"></div>
<script>
let originalFileName = '';
document.querySelector('input[name=pdf-upload]').addEventListener('change', async (event) => {
const file = event.target.files[0];
if (file) {
originalFileName = file.name.replace(/\.[^/.]+$/, "");
const pdfData = await file.arrayBuffer();
pdfjsLib.GlobalWorkerOptions.workerSrc = 'pdfjs/pdf.worker.js'
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 th:replace="~{fragments/common :: fileSelector(name='image-upload', multiple=true, accept='image/*', inputText=#{imgPrompt})}"></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>
</div>
<div class="tab-container drawing-pad-container" th:title="#{sign.draw}">
<canvas id="drawing-pad-canvas"></canvas>
<br>
<button id="clear-signature" class="btn btn-outline-danger mt-2" onclick="signaturePad.clear()" th:text="#{sign.clear}"></button>
<button id="save-signature" class="btn btn-outline-success mt-2" onclick="addDraggableFromPad()" th:text="#{sign.add}"></button>
<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) {
// code is from: https://github.com/szimek/signature_pad/issues/49#issuecomment-1104035775
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() {
// When zoomed out to less than 100%, for some very strange reason,
// some browsers report devicePixelRatio as less than 1
// and only part of the canvas is cleared then.
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);
// This library does not listen for canvas changes, so after the canvas is automatically
// cleared by the browser, SignaturePad#isEmpty might still return false, even though the
// canvas looks empty, because the internal data of this library wasn't cleared. To make sure
// that the state of this library is consistent with visual state of the canvas, you
// have to clear it manually.
signaturePad.clear();
}
new IntersectionObserver((entries, observer) => {
if (entries.some(entry => entry.intersectionRatio > 0)) {
resizeCanvas();
}
}).observe(signaturePadCanvas);
new ResizeObserver(resizeCanvas).observe(signaturePadCanvas);
</script>
<style>
.drawing-pad-container {
text-align: center;
}
#drawing-pad-canvas {
background: rgba(125,125,125,0.2);
width: 100%;
height: 300px;
}
</style>
</div>
<div class="tab-container" th:title="#{sign.text}">
<label class="form-check-label" for="sigText" th:text="#{text}"></label>
<textarea class="form-control" id="sigText" name="sigText" rows="3"></textarea>
<label th:text="#{font}"></label>
<select class="form-control" name="font" id="font-select">
<option th:each="font : ${fonts}"
th:value="${font.name}"
th:text="${font.name}"
th:class="${font.name.toLowerCase()+'-font'}">
</option>
</select>
<div class="margin-auto-parent">
<button id="save-text-signature" class="btn btn-outline-success mt-2 margin-center" onclick="addDraggableFromText()" th:text="#{sign.add}"></button>
</div>
<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 ${font}`;
ctx.textBaseline = 'top';
let y = 0;
paragraphs.forEach(paragraph => {
ctx.fillText(paragraph, 0, y);
y += fontSize;
});
const dataURL = canvas.toDataURL();
DraggableUtils.createDraggableCanvasFromUrl(dataURL);
}
</script>
<script>
const sigTextInput = document.getElementById('sigText');
const fontSelect = document.getElementById('font-select');
const updateOptionTexts = () => {
Array.from(fontSelect.options).forEach(option => {
const fontName = option.value.replace(/-regular$/i, '');
option.text = sigTextInput.value || fontName;
});
}
sigTextInput.addEventListener('input', updateOptionTexts);
fontSelect.addEventListener('change', (e) => {
e.target.style.fontFamily = e.target.value;
updateOptionTexts();
});
// Manually trigger the change event
fontSelect.dispatchEvent(new Event('change'));
</script>
<th:block th:each="font : ${fonts}">
<style th:inline="text">
#font-select option[value='/*[[${font.name}]]*/'] {
font-family: '/*[[${font.name}]]*/', cursive;
}
</style>
</th:block>
</div>
</div>
<!-- draggables box -->
<div id="box-drag-container" class="show-on-file-selected">
<canvas id="pdf-canvas"></canvas>
<script src="js/draggable-utils.js"></script>
<div class="draggable-buttons-box ignore-rtl">
<button class="btn btn-outline-secondary" onclick="DraggableUtils.deleteDraggableCanvas(DraggableUtils.getLastInteracted())">
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-trash" viewBox="0 0 16 16">
<path d="M5.5 5.5A.5.5 0 0 1 6 6v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm2.5 0a.5.5 0 0 1 .5.5v6a.5.5 0 0 1-1 0V6a.5.5 0 0 1 .5-.5Zm3 .5a.5.5 0 0 0-1 0v6a.5.5 0 0 0 1 0V6Z"/>
<path d="M14.5 3a1 1 0 0 1-1 1H13v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V4h-.5a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1H6a1 1 0 0 1 1-1h2a1 1 0 0 1 1 1h3.5a1 1 0 0 1 1 1v1ZM4.118 4 4 4.059V13a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1V4.059L11.882 4H4.118ZM2.5 3h11V2h-11v1Z"/>
</svg>
</button>
<button class="btn btn-outline-secondary" onclick="document.documentElement.getAttribute('lang-direction')==='rtl' ? DraggableUtils.incrementPage() : DraggableUtils.decrementPage()" style="margin-left:auto">
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chevron-left" viewBox="0 0 16 16">
<path fill-rule="evenodd" d="M11.354 1.646a.5.5 0 0 1 0 .708L5.707 8l5.647 5.646a.5.5 0 0 1-.708.708l-6-6a.5.5 0 0 1 0-.708l6-6a.5.5 0 0 1 .708 0z"/>
</svg>
</button>
<button class="btn btn-outline-secondary" onclick="document.documentElement.getAttribute('lang-direction')==='rtl' ? DraggableUtils.decrementPage() : DraggableUtils.incrementPage()">
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chevron-right" viewBox="0 0 16 16">
<path fill-rule="evenodd" d="M4.646 1.646a.5.5 0 0 1 .708 0l6 6a.5.5 0 0 1 0 .708l-6 6a.5.5 0 0 1-.708-.708L10.293 8 4.646 2.354a.5.5 0 0 1 0-.708z"/>
</svg>
</button>
</div>
<style>
#box-drag-container {
position: relative;
margin: 20px 0;
}
.draggable-buttons-box {
position: absolute;
top: 0;
padding: 10px;
width: 100%;
display: flex;
gap: 5px;
}
.draggable-buttons-box > button {
z-index: 10;
background-color: rgba(13, 110, 253, 0.1);
}
.draggable-canvas {
border: 1px solid red;
position: absolute;
touch-action: none;
user-select: none;
top: 0px;
left: 0;
}
</style>
</div>
<!-- download button -->
<div class="margin-auto-parent">
<button id="download-pdf" class="btn btn-primary mb-2 show-on-file-selected margin-center">Download PDF</button>
</div>
<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>
</div>
<div th:insert="~{fragments/footer.html :: footer}"></div>
</div>
</body>
</html>