Revamped Signing page to allow multiple signatures and images
This commit is contained in:
Saud Fatayerji
parent
07e81a117b
commit
b86afd7fc9
6 changed files with 479 additions and 350 deletions
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@ -16,11 +16,14 @@
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html[lang-direction=ltr] * {
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html[lang-direction=ltr] * {
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direction: ltr;
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direction: ltr;
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}
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}
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html[lang-direction=rtl] * {
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html[lang-direction=rtl] * {
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direction: rtl;
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direction: rtl;
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text-align: right;
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text-align: right;
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}
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}
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.ignore-rtl {
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direction: ltr !important;
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text-align: left !important;
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}
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.align-top {
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.align-top {
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position: absolute;
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position: absolute;
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@ -47,3 +50,11 @@ html[lang-direction=rtl] * {
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border-top-left-radius: 0.25rem !important;
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border-top-left-radius: 0.25rem !important;
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border-bottom-left-radius: 0.25rem !important;
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border-bottom-left-radius: 0.25rem !important;
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}
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}
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.margin-auto-parent {
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width: 100%;
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display: flex;
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}
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.margin-center {
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margin: 0 auto;
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}
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31
src/main/resources/static/css/tab-container.css
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31
src/main/resources/static/css/tab-container.css
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@ -0,0 +1,31 @@
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.tab-group {
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}
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.tab-container {
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display: none;
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}
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.tab-container.active {
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display: block;
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border: 1px solid #dee2e6;
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padding: 15px;
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}
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/*
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.tab-buttons {
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border-bottom: 1px solid #dee2e6;
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}
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*/
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.tab-buttons > button {
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margin-bottom: -1px;
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background: 0 0;
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border: 1px solid transparent;
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border-top-left-radius: 0.25rem;
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border-top-right-radius: 0.25rem;
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}
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.tab-buttons > button.active {
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color: #495057;
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background-color: #fff;
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border-color: #dee2e6 #dee2e6 #fff;
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}
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211
src/main/resources/static/js/draggable-utils.js
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211
src/main/resources/static/js/draggable-utils.js
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@ -0,0 +1,211 @@
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const DraggableUtils = {
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boxDragContainer: document.getElementById('box-drag-container'),
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pdfCanvas: document.getElementById('pdf-canvas'),
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nextId: 0,
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pdfDoc: null,
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pageIndex: 0,
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init() {
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interact('.draggable-canvas')
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.draggable({
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listeners: {
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move: (event) => {
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const target = event.target;
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const x = (parseFloat(target.getAttribute('data-x')) || 0) + event.dx;
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const y = (parseFloat(target.getAttribute('data-y')) || 0) + event.dy;
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target.style.transform = `translate(${x}px, ${y}px)`;
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target.setAttribute('data-x', x);
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target.setAttribute('data-y', y);
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this.onInteraction(target);
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},
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},
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})
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.resizable({
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edges: { left: true, right: true, bottom: true, top: true },
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listeners: {
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move: (event) => {
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var target = event.target
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var x = (parseFloat(target.getAttribute('data-x')) || 0)
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var y = (parseFloat(target.getAttribute('data-y')) || 0)
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// update the element's style
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target.style.width = event.rect.width + 'px'
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target.style.height = event.rect.height + 'px'
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// translate when resizing from top or left edges
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x += event.deltaRect.left
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y += event.deltaRect.top
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target.style.transform = 'translate(' + x + 'px,' + y + 'px)'
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target.setAttribute('data-x', x)
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target.setAttribute('data-y', y)
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target.textContent = Math.round(event.rect.width) + '\u00D7' + Math.round(event.rect.height)
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this.onInteraction(target);
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},
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},
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modifiers: [
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interact.modifiers.restrictSize({
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min: { width: 50, height: 50 },
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}),
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],
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inertia: true,
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});
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},
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onInteraction(target) {
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this.boxDragContainer.appendChild(target);
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},
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createDraggableCanvas() {
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const createdCanvas = document.createElement('canvas');
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createdCanvas.id = `draggable-canvas-${this.nextId++}`;
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createdCanvas.classList.add("draggable-canvas");
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const x = 0;
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const y = 0;
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createdCanvas.style.transform = `translate(${x}px, ${y}px)`;
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createdCanvas.setAttribute('data-x', x);
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createdCanvas.setAttribute('data-y', y);
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createdCanvas.onclick = e => this.onInteraction(e.target);
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this.boxDragContainer.appendChild(createdCanvas);
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return createdCanvas;
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},
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createDraggableCanvasFromUrl(dataUrl) {
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return new Promise((resolve) => {
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var myImage = new Image();
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myImage.src = dataUrl;
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myImage.onload = () => {
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var createdCanvas = this.createDraggableCanvas();
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createdCanvas.width = myImage.width;
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createdCanvas.height = myImage.height;
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const imgAspect = myImage.width / myImage.height;
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const pdfAspect = this.boxDragContainer.offsetWidth / this.boxDragContainer.offsetHeight;
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var scaleMultiplier;
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if (imgAspect > pdfAspect) {
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scaleMultiplier = this.boxDragContainer.offsetWidth / myImage.width;
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} else {
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scaleMultiplier = this.boxDragContainer.offsetHeight / myImage.height;
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}
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var newWidth = createdCanvas.width;
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var newHeight = createdCanvas.height;
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if (scaleMultiplier < 1) {
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newWidth = newWidth * scaleMultiplier;
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newHeight = newHeight * scaleMultiplier;
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}
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createdCanvas.style.width = newWidth+"px";
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createdCanvas.style.height = newHeight+"px";
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var myContext = createdCanvas.getContext("2d");
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myContext.drawImage(myImage,0,0);
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resolve(createdCanvas);
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}
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})
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},
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deleteDraggableCanvas(element) {
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element.remove();
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},
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deleteDraggableCanvasById(id) {
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this.deleteDraggableCanvas(document.getElementById(id));
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},
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getLastInteracted() {
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return this.boxDragContainer.querySelector(".draggable-canvas:last-of-type");
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},
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async renderPage(pdfDocument, pageIdx) {
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this.pdfDoc = pdfDocument ? pdfDocument : this.pdfDoc;
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this.pageIndex = pageIdx;
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const page = await this.pdfDoc.getPage(this.pageIndex+1);
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// set the canvas size to the size of the page
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if (page.rotate == 90 || page.rotate == 270) {
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this.pdfCanvas.width = page.view[3];
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this.pdfCanvas.height = page.view[2];
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} else {
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this.pdfCanvas.width = page.view[2];
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this.pdfCanvas.height = page.view[3];
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}
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// render the page onto the canvas
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var renderContext = {
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canvasContext: this.pdfCanvas.getContext("2d"),
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viewport: page.getViewport({ scale: 1 })
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};
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await page.render(renderContext).promise;
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//return pdfCanvas.toDataURL();
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},
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async incrementPage() {
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if (this.pageIndex < this.pdfDoc.numPages-1) {
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return await this.renderPage(this.pdfDoc, this.pageIndex+1)
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}
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},
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async decrementPage() {
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if (this.pageIndex > 0) {
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return await this.renderPage(this.pdfDoc, this.pageIndex-1)
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}
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},
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parseTransform(element) {
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const tansform = element.style.transform.replace(/[^.,-\d]/g, '');
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const transformComponents = tansform.split(",");
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return {
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x: parseFloat(transformComponents[0]),
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y: parseFloat(transformComponents[1]),
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width: element.offsetWidth,
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height: element.offsetHeight,
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}
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},
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async getOverlayedPdfDocument() {
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const pdfBytes = await this.pdfDoc.getData();
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const pdfDocModified = await PDFLib.PDFDocument.load(pdfBytes);
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const draggables = this.boxDragContainer.querySelectorAll(".draggable-canvas");
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for (const draggable of draggables) {
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// embed the draggable canvas
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const dataURL = draggable.toDataURL();
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const response = await fetch(dataURL);
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const draggableImgBytes = await response.arrayBuffer();
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const pdfImageObject = await pdfDocModified.embedPng(draggableImgBytes);
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const page = pdfDocModified.getPage(this.pageIndex);
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const draggablePositionPixels = this.parseTransform(draggable);
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const draggablePositionRelative = {
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x: draggablePositionPixels.x / this.pdfCanvas.offsetWidth,
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y: draggablePositionPixels.y / this.pdfCanvas.offsetHeight,
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width: draggablePositionPixels.width / this.pdfCanvas.offsetWidth,
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height: draggablePositionPixels.height / this.pdfCanvas.offsetHeight,
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}
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const draggablePositionPdf = {
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x: draggablePositionRelative.x * page.getWidth(),
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y: draggablePositionRelative.y * page.getHeight(),
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width: draggablePositionRelative.width * page.getWidth(),
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height: draggablePositionRelative.height * page.getHeight(),
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}
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page.drawImage(pdfImageObject, {
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x: draggablePositionPdf.x,
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y: page.getHeight() - draggablePositionPdf.y - draggablePositionPdf.height,
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width: draggablePositionPdf.width,
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height: draggablePositionPdf.height,
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});
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}
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return pdfDocModified;
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},
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}
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document.addEventListener("DOMContentLoaded", () => {
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DraggableUtils.init();
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});
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39
src/main/resources/static/js/tab-container.js
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39
src/main/resources/static/js/tab-container.js
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TabContainer = {
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initTabGroups() {
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const groups = document.querySelectorAll(".tab-group");
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const unloadedGroups = [...groups].filter(g => !g.initialised);
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unloadedGroups.forEach(group => {
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const containers = group.querySelectorAll(".tab-container");
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const tabTitles = [...containers].map(c => c.getAttribute("title"));
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const tabList = document.createElement("div");
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tabList.classList.add("tab-buttons");
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tabTitles.forEach(title => {
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const tabButton = document.createElement("button");
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tabButton.innerHTML = title;
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tabButton.onclick = e => {
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this.setActiveTab(e.target);
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}
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tabList.appendChild(tabButton);
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});
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group.prepend(tabList);
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this.setActiveTab(tabList.firstChild);
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group.initialised = true;
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});
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},
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setActiveTab(tabButton) {
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const group = tabButton.closest(".tab-group")
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group.querySelectorAll(".active").forEach(el => el.classList.remove("active"));
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tabButton.classList.add("active");
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group.querySelector(`[title="${tabButton.innerHTML}"]`).classList.add("active");
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},
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}
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document.addEventListener("DOMContentLoaded", () => {
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TabContainer.initTabGroups();
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})
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<link rel="stylesheet" href="css/general.css">
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<link rel="stylesheet" href="css/general.css">
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<link rel="stylesheet" th:href="@{css/dark-mode.css}" id="dark-mode-styles">
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<link rel="stylesheet" th:href="@{css/dark-mode.css}" id="dark-mode-styles">
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<link rel="stylesheet" th:href="@{css/rainbow-mode.css}" id="rainbow-mode-styles" disabled="true">
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<link rel="stylesheet" th:href="@{css/rainbow-mode.css}" id="rainbow-mode-styles" disabled="true">
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<link rel="stylesheet" href="css/tab-container.css">
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<script src="js/tab-container.js"></script>
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<script>
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<script>
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var toggleCount = 0;
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var toggleCount = 0;
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var lastToggleTime = Date.now();
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var lastToggleTime = Date.now();
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@ -478,7 +482,6 @@ document.addEventListener("DOMContentLoaded", function () {
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</div>
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</div>
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<div class="selected-files"></div>
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<div class="selected-files"></div>
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</div>
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</div>
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<br>
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<div id="progressBarContainer" style="display: none; position: relative;">
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<div id="progressBarContainer" style="display: none; position: relative;">
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<div class="progress" style="height: 1rem;">
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<div class="progress" style="height: 1rem;">
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<div id="progressBar" class="progress-bar progress-bar-striped progress-bar-animated bg-success" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%;">
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<div id="progressBar" class="progress-bar progress-bar-striped progress-bar-animated bg-success" role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" style="width: 0%;">
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<link rel="preconnect" href="https://fonts.googleapis.com">
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<link rel="preconnect" href="https://fonts.googleapis.com">
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link href="https://fonts.googleapis.com/css2?family=Estonia&family=Tangerine&family=Windsong&display=swap" rel="stylesheet">
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<link href="https://fonts.googleapis.com/css2?family=Estonia&family=Tangerine&family=Windsong&display=swap" rel="stylesheet">
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<style>
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#pdf-container {
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position: relative;
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}
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#pdf-canvas {
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border: 1px solid black;
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margin-top: 10px;
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}
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#signature-canvas {
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border: 1px solid red;
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position: absolute;
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touch-action: none;
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top: 10px; /* Make sure this value matches the margin-top of #pdf-canvas */
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left: 0;
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}
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#signature-pad-container {
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border: 1px solid black;
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display: block;
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text-align: center;
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padding: 15px;
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}
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#signature-pad-canvas {
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background: rgba(125,125,125,0.2);
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}
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#pdf-canvas {
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|
||||||
width: 100%;
|
|
||||||
}
|
|
||||||
#font-select option {
|
|
||||||
font-size: 30px; /* Set the font size as desired */
|
|
||||||
}
|
|
||||||
|
|
||||||
#font-select option[value="Estonia"] {
|
|
||||||
font-family: 'Estonia', sans-serif;
|
|
||||||
}
|
|
||||||
|
|
||||||
#font-select option[value="Tangerine"] {
|
|
||||||
font-family: 'Tangerine', cursive;
|
|
||||||
}
|
|
||||||
|
|
||||||
#font-select option[value="Windsong"] {
|
|
||||||
font-family: 'Windsong', cursive;
|
|
||||||
}
|
|
||||||
</style>
|
|
||||||
</head>
|
</head>
|
||||||
|
|
||||||
<body>
|
<body>
|
||||||
|
|
@ -75,316 +25,200 @@
|
||||||
<div class="row justify-content-center">
|
<div class="row justify-content-center">
|
||||||
<div class="col-md-6">
|
<div class="col-md-6">
|
||||||
<h2 th:text="#{sign.header}"></h2>
|
<h2 th:text="#{sign.header}"></h2>
|
||||||
|
|
||||||
|
<!-- pdf selector -->
|
||||||
<div th:replace="~{fragments/common :: fileSelector(name='pdf-upload', multiple=false, accept='application/pdf')}"></div>
|
<div th:replace="~{fragments/common :: fileSelector(name='pdf-upload', multiple=false, accept='application/pdf')}"></div>
|
||||||
|
<script>
|
||||||
|
document.querySelector('input[name=pdf-upload]').addEventListener('change', async (event) => {
|
||||||
|
const file = event.target.files[0];
|
||||||
|
if (file) {
|
||||||
|
const pdfData = await file.arrayBuffer();
|
||||||
|
const pdfDoc = await pdfjsLib.getDocument({ data: pdfData }).promise;
|
||||||
|
await DraggableUtils.renderPage(pdfDoc, 0);
|
||||||
|
|
||||||
<div class = "btn-group">
|
document.querySelectorAll(".show-on-file-selected").forEach(el => {
|
||||||
<input type="radio" class="btn-check" name="signature-type" id="draw-signature" autocomplete="off" checked>
|
el.style.cssText = '';
|
||||||
<label class="btn btn-outline-secondary" for="draw-signature">Draw</label>
|
})
|
||||||
<input type="radio" class="btn-check" name="signature-type" id="import-image" autocomplete="off">
|
}
|
||||||
<label class="btn btn-outline-secondary" for="import-image">Import</label>
|
});
|
||||||
<input type="radio" class="btn-check" name="signature-type" id="type-signature" autocomplete="off">
|
document.addEventListener("DOMContentLoaded", () => {
|
||||||
<label class="btn btn-outline-secondary" for="type-signature">Type</label>
|
document.querySelectorAll(".show-on-file-selected").forEach(el => {
|
||||||
</div>
|
el.style.cssText = "display:none !important";
|
||||||
|
})
|
||||||
<div th:replace="~{fragments/common :: fileSelector(name='signature-upload', multiple=false, accept='image/*', inputText=#{imgPrompt})}"></div>
|
});
|
||||||
<!-- Signature Pad -->
|
</script>
|
||||||
<div id="signature-pad-container">
|
|
||||||
<canvas id="signature-pad-canvas"></canvas>
|
<div class="tab-group show-on-file-selected">
|
||||||
<br>
|
<div class="tab-container" title="Upload Image">
|
||||||
<button id="clear-signature" class="btn btn-outline-danger mt-2">Clear</button>
|
<div th:replace="~{fragments/common :: fileSelector(name='image-upload', multiple=true, accept='image/*', inputText=#{imgPrompt})}"></div>
|
||||||
<button id="save-signature" class="btn btn-outline-success mt-2">Save</button>
|
<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" title="Draw Signature">
|
||||||
|
<canvas id="drawing-pad-canvas"></canvas>
|
||||||
|
<br>
|
||||||
|
<button id="clear-signature" class="btn btn-outline-danger mt-2" onclick="signaturePad.clear()">Clear</button>
|
||||||
|
<button id="save-signature" class="btn btn-outline-success mt-2" onclick="addDraggableFromPad()">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 dataURL = signaturePad.toDataURL();
|
||||||
|
DraggableUtils.createDraggableCanvasFromUrl(dataURL);
|
||||||
|
}
|
||||||
|
</script>
|
||||||
|
<style>
|
||||||
|
.drawing-pad-container {
|
||||||
|
text-align: center;
|
||||||
|
}
|
||||||
|
|
||||||
|
#drawing-pad-canvas {
|
||||||
|
background: rgba(125,125,125,0.2);
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
</div>
|
||||||
|
<div class="tab-container" title="Text Input">
|
||||||
|
<label class="form-check-label" for="sigText">Text</label>
|
||||||
|
<input type="text" class="form-control" id="sigText" name="sigText">
|
||||||
|
<label>Font:</label>
|
||||||
|
<select class="form-control" name="font" id="font-select">
|
||||||
|
<option value="Estonia" class="estonia-font">Estonia</option>
|
||||||
|
<option value="Tangerine" class="tangerine-font">Tangerine</option>
|
||||||
|
<option value="Windsong" class="windsong-font">Windsong</option>
|
||||||
|
</select>
|
||||||
|
<div class="margin-auto-parent">
|
||||||
|
<button id="save-text-signature" class="btn btn-outline-success mt-2 margin-center" onclick="addDraggableFromText()">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 ${font}`;
|
||||||
|
const textWidth = ctx.measureText(sigText).width;
|
||||||
|
const textHeight = fontSize;
|
||||||
|
|
||||||
|
canvas.width = textWidth;
|
||||||
|
canvas.height = textHeight*1.35; //for tails
|
||||||
|
ctx.font = `${fontSize}px ${font}`;
|
||||||
|
ctx.fillText(sigText, 0, fontSize);
|
||||||
|
|
||||||
|
const dataURL = canvas.toDataURL();
|
||||||
|
DraggableUtils.createDraggableCanvasFromUrl(dataURL);
|
||||||
|
}
|
||||||
|
</script>
|
||||||
|
<style>
|
||||||
|
#font-select option {
|
||||||
|
font-size: 30px;
|
||||||
|
}
|
||||||
|
#font-select option[value="Estonia"] {
|
||||||
|
font-family: 'Estonia', sans-serif;
|
||||||
|
}
|
||||||
|
#font-select option[value="Tangerine"] {
|
||||||
|
font-family: 'Tangerine', cursive;
|
||||||
|
}
|
||||||
|
#font-select option[value="Windsong"] {
|
||||||
|
font-family: 'Windsong', cursive;
|
||||||
|
}
|
||||||
|
</style>
|
||||||
|
</div>
|
||||||
</div>
|
</div>
|
||||||
|
|
||||||
<div id="signature-type-container">
|
<!-- draggables box -->
|
||||||
<label class="form-check-label" for="sigText">Signature</label>
|
<div id="box-drag-container" class="show-on-file-selected">
|
||||||
<input type="text" class="form-control" id="sigText" name="sigText">
|
|
||||||
<label>Font:</label>
|
|
||||||
<select class="form-control" name="font" id="font-select">
|
|
||||||
<option value="Estonia" class="estonia-font">Estonia</option>
|
|
||||||
<option value="Tangerine" class="tangerine-font">Tangerine</option>
|
|
||||||
<option value="Windsong" class="windsong-font">Windsong</option>
|
|
||||||
</select>
|
|
||||||
<button id="save-text-signature" class="btn btn-outline-success mt-2">Save</button>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div id="pdf-container">
|
|
||||||
<canvas id="pdf-canvas"></canvas>
|
<canvas id="pdf-canvas"></canvas>
|
||||||
<canvas id="signature-canvas" hidden style="position: absolute;" data-scale="1"></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;
|
||||||
|
}
|
||||||
|
#pdf-canvas {
|
||||||
|
box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.384);
|
||||||
|
margin: 20px 0;
|
||||||
|
width: 100%;
|
||||||
|
}
|
||||||
|
.draggable-buttons-box {
|
||||||
|
position: absolute;
|
||||||
|
top: 20px;
|
||||||
|
padding: 10px;
|
||||||
|
width: 100%;
|
||||||
|
display: flex;
|
||||||
|
gap: 5px;
|
||||||
|
}
|
||||||
|
.draggable-buttons-box > button {
|
||||||
|
z-index: 10;
|
||||||
|
background: 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>
|
</div>
|
||||||
|
|
||||||
<button id="download-pdf" class="btn btn-primary mb-2">Download PDF</button>
|
<!-- 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 = 'signed-document.pdf';
|
||||||
|
link.click();
|
||||||
|
});
|
||||||
|
</script>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</div>
|
||||||
<div th:insert="~{fragments/footer.html :: footer}"></div>
|
<div th:insert="~{fragments/footer.html :: footer}"></div>
|
||||||
</div>
|
</div>
|
||||||
<script>
|
|
||||||
document.addEventListener('DOMContentLoaded', () => {
|
|
||||||
|
|
||||||
const fontSelect = document.getElementById('font-select');
|
|
||||||
fontSelect.addEventListener('change', (event) => {
|
|
||||||
const selectedFont = event.target.value;
|
|
||||||
fontSelect.style.fontFamily = selectedFont;
|
|
||||||
});
|
|
||||||
fontSelect.style.fontFamily = fontSelect.value;
|
|
||||||
|
|
||||||
const pdfUpload = document.querySelector('input[name=pdf-upload]');
|
|
||||||
const signatureUpload = document.querySelector('input[name=signature-upload]');
|
|
||||||
const pdfCanvas = document.getElementById('pdf-canvas');
|
|
||||||
const signatureCanvas = document.getElementById('signature-canvas');
|
|
||||||
const downloadPdfBtn = document.getElementById('download-pdf');
|
|
||||||
const signaturePadContainer = document.getElementById('signature-pad-container')
|
|
||||||
const signaturePadCanvas = document.getElementById('signature-pad-canvas');
|
|
||||||
const clearSignatureBtn = document.getElementById('clear-signature');
|
|
||||||
const saveSignatureBtn = document.getElementById('save-signature');
|
|
||||||
const signatureTypeContainer = document.getElementById('signature-type-container');
|
|
||||||
document.querySelector('input[name=signature-upload]').closest(".custom-file-chooser").style.display = "none"
|
|
||||||
signatureTypeContainer.style.display = 'none';
|
|
||||||
const signaturePad = new SignaturePad(signaturePadCanvas, {
|
|
||||||
minWidth: 1,
|
|
||||||
maxWidth: 2,
|
|
||||||
penColor: 'black',
|
|
||||||
});
|
|
||||||
|
|
||||||
|
|
||||||
const pdfCtx = pdfCanvas.getContext('2d');
|
|
||||||
let pdfDoc = null;
|
|
||||||
|
|
||||||
pdfjsLib.GlobalWorkerOptions.workerSrc = 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/2.12.313/pdf.worker.min.js';
|
|
||||||
|
|
||||||
pdfUpload.addEventListener('change', async (event) => {
|
|
||||||
const file = event.target.files[0];
|
|
||||||
if (file) {
|
|
||||||
const pdfData = await file.arrayBuffer();
|
|
||||||
pdfDoc = await pdfjsLib.getDocument({ data: pdfData }).promise;
|
|
||||||
renderPage(1);
|
|
||||||
}
|
|
||||||
});
|
|
||||||
|
|
||||||
clearSignatureBtn.addEventListener('click', () => {
|
|
||||||
signaturePad.clear();
|
|
||||||
});
|
|
||||||
|
|
||||||
$("input[name=signature-type]").change(function() {
|
|
||||||
const drawSignatureInput = document.getElementById('draw-signature');
|
|
||||||
const importImageInput = document.getElementById('import-image');
|
|
||||||
const typeSignatureInput = document.getElementById('type-signature');
|
|
||||||
|
|
||||||
signaturePadContainer.style.display = drawSignatureInput.checked ? 'block' : 'none';
|
|
||||||
signatureTypeContainer.style.display = typeSignatureInput.checked ? 'block' : 'none';
|
|
||||||
document.querySelector('input[name=signature-upload]').closest(".custom-file-chooser").style.display = importImageInput.checked ? 'block' : 'none';
|
|
||||||
|
|
||||||
if (drawSignatureInput.checked) {
|
|
||||||
populateSignatureFromPad();
|
|
||||||
} else if (importImageInput.checked) {
|
|
||||||
populateSignatureFromFileUpload();
|
|
||||||
}
|
|
||||||
});
|
|
||||||
|
|
||||||
|
|
||||||
const saveTextSignatureBtn = document.getElementById('save-text-signature');
|
|
||||||
saveTextSignatureBtn.addEventListener('click', () => {
|
|
||||||
if (!document.getElementById('type-signature').checked) return;
|
|
||||||
|
|
||||||
const sigText = document.getElementById('sigText').value;
|
|
||||||
const font = document.querySelector('select[name=font]').value;
|
|
||||||
const fontSize = 50;
|
|
||||||
|
|
||||||
const canvas = document.createElement('canvas');
|
|
||||||
const ctx = canvas.getContext('2d');
|
|
||||||
ctx.font = `${fontSize}px ${font}`;
|
|
||||||
const textWidth = ctx.measureText(sigText).width;
|
|
||||||
const textHeight = fontSize;
|
|
||||||
|
|
||||||
canvas.width = textWidth;
|
|
||||||
canvas.height = textHeight*1.35; //for tails
|
|
||||||
ctx.font = `${fontSize}px ${font}`;
|
|
||||||
ctx.fillText(sigText, 0, fontSize);
|
|
||||||
|
|
||||||
const dataURL = canvas.toDataURL();
|
|
||||||
populateSignature(dataURL);
|
|
||||||
});
|
|
||||||
|
|
||||||
|
|
||||||
function populateSignature(imgUrl) {
|
|
||||||
const img = new Image();
|
|
||||||
img.onload = () => {
|
|
||||||
const ctx = signatureCanvas.getContext('2d');
|
|
||||||
ctx.clearRect(0, 0, signatureCanvas.width, signatureCanvas.height);
|
|
||||||
signatureCanvas.width = img.width;
|
|
||||||
signatureCanvas.height = img.height;
|
|
||||||
ctx.drawImage(img, 0, 0, img.width, img.height);
|
|
||||||
signatureCanvas.hidden = false;
|
|
||||||
|
|
||||||
const x = 0;
|
|
||||||
const y = 0;
|
|
||||||
signatureCanvas.style.transform = `translate(${x}px, ${y}px)`;
|
|
||||||
signatureCanvas.setAttribute('data-x', x);
|
|
||||||
signatureCanvas.setAttribute('data-y', y);
|
|
||||||
|
|
||||||
// calcualte the max size
|
|
||||||
const containerWidth = parseInt(getComputedStyle(pdfCanvas).width.replace('px',''));
|
|
||||||
const containerHeight = parseInt(getComputedStyle(pdfCanvas).height.replace('px',''));
|
|
||||||
const containerAspectRatio = containerWidth / containerHeight;
|
|
||||||
const imgAspectRatio = img.width / img.height;
|
|
||||||
if (imgAspectRatio > containerAspectRatio) {
|
|
||||||
const width = Math.min(img.width, containerWidth);
|
|
||||||
signatureCanvas.style.width = width+'px';
|
|
||||||
signatureCanvas.style.height = (width/imgAspectRatio)+'px';
|
|
||||||
} else {
|
|
||||||
const height = Math.min(img.height, containerHeight);
|
|
||||||
signatureCanvas.style.width = (height*imgAspectRatio)+'px';
|
|
||||||
signatureCanvas.style.height = height+'px';
|
|
||||||
}
|
|
||||||
};
|
|
||||||
img.src = imgUrl;
|
|
||||||
}
|
|
||||||
function populateSignatureFromFileUpload() {
|
|
||||||
const file = signatureUpload.files[0];
|
|
||||||
if (!file) return;
|
|
||||||
|
|
||||||
const reader = new FileReader();
|
|
||||||
reader.onload = (e) => populateSignature(e.target.result);
|
|
||||||
reader.readAsDataURL(file);
|
|
||||||
}
|
|
||||||
function populateSignatureFromPad() {
|
|
||||||
if (!document.getElementById('draw-signature').checked) return;
|
|
||||||
if (signaturePad.isEmpty()) return;
|
|
||||||
|
|
||||||
const dataURL = signaturePad.toDataURL();
|
|
||||||
populateSignature(dataURL);
|
|
||||||
}
|
|
||||||
signatureUpload.addEventListener('change', populateSignatureFromFileUpload);
|
|
||||||
saveSignatureBtn.addEventListener('click', populateSignatureFromPad);
|
|
||||||
|
|
||||||
|
|
||||||
function renderPage(pageNum) {
|
|
||||||
pdfDoc.getPage(pageNum).then((page) => {
|
|
||||||
const viewport = page.getViewport({ scale: 1 });
|
|
||||||
pdfCanvas.width = viewport.width;
|
|
||||||
pdfCanvas.height = viewport.height;
|
|
||||||
|
|
||||||
const renderCtx = {
|
|
||||||
canvasContext: pdfCtx,
|
|
||||||
viewport: viewport,
|
|
||||||
};
|
|
||||||
|
|
||||||
page.render(renderCtx);
|
|
||||||
});
|
|
||||||
}
|
|
||||||
|
|
||||||
function parseTransform(element) {
|
|
||||||
const tansform = element.style.transform.replace(/[^.,-\d]/g, '');
|
|
||||||
const transformComponents = tansform.split(",");
|
|
||||||
return {
|
|
||||||
x: parseFloat(transformComponents[0]),
|
|
||||||
y: parseFloat(transformComponents[1]),
|
|
||||||
width: element.offsetWidth,
|
|
||||||
height: element.offsetHeight,
|
|
||||||
}
|
|
||||||
}
|
|
||||||
interact('#signature-canvas')
|
|
||||||
.draggable({
|
|
||||||
listeners: {
|
|
||||||
move: (event) => {
|
|
||||||
const target = event.target;
|
|
||||||
const x = (parseFloat(target.getAttribute('data-x')) || 0) + event.dx;
|
|
||||||
const y = (parseFloat(target.getAttribute('data-y')) || 0) + event.dy;
|
|
||||||
|
|
||||||
target.style.transform = `translate(${x}px, ${y}px)`;
|
|
||||||
target.setAttribute('data-x', x);
|
|
||||||
target.setAttribute('data-y', y);
|
|
||||||
},
|
|
||||||
},
|
|
||||||
})
|
|
||||||
.resizable({
|
|
||||||
edges: { left: true, right: true, bottom: true, top: true },
|
|
||||||
listeners: {
|
|
||||||
move: (event) => {
|
|
||||||
var target = event.target
|
|
||||||
var x = (parseFloat(target.getAttribute('data-x')) || 0)
|
|
||||||
var y = (parseFloat(target.getAttribute('data-y')) || 0)
|
|
||||||
|
|
||||||
// update the element's style
|
|
||||||
target.style.width = event.rect.width + 'px'
|
|
||||||
target.style.height = event.rect.height + 'px'
|
|
||||||
|
|
||||||
// translate when resizing from top or left edges
|
|
||||||
x += event.deltaRect.left
|
|
||||||
y += event.deltaRect.top
|
|
||||||
|
|
||||||
target.style.transform = 'translate(' + x + 'px,' + y + 'px)'
|
|
||||||
|
|
||||||
target.setAttribute('data-x', x)
|
|
||||||
target.setAttribute('data-y', y)
|
|
||||||
target.textContent = Math.round(event.rect.width) + '\u00D7' + Math.round(event.rect.height)
|
|
||||||
},
|
|
||||||
},
|
|
||||||
modifiers: [
|
|
||||||
interact.modifiers.restrictSize({
|
|
||||||
min: { width: 50, height: 50 },
|
|
||||||
}),
|
|
||||||
],
|
|
||||||
inertia: true,
|
|
||||||
});
|
|
||||||
|
|
||||||
|
|
||||||
async function getSignatureImage() {
|
|
||||||
const dataURL = signatureCanvas.toDataURL();
|
|
||||||
return dataURLToArrayBuffer(dataURL);
|
|
||||||
}
|
|
||||||
|
|
||||||
downloadPdfBtn.addEventListener('click', async () => {
|
|
||||||
if (pdfDoc) {
|
|
||||||
const pdfBytes = await pdfDoc.getData();
|
|
||||||
const pdfDocModified = await PDFLib.PDFDocument.load(pdfBytes);
|
|
||||||
|
|
||||||
if (signatureCanvas) {
|
|
||||||
const signatureBytes = await getSignatureImage();
|
|
||||||
const signatureImageObject = await pdfDocModified.embedPng(signatureBytes);
|
|
||||||
|
|
||||||
const pageIndex = 0; // Choose the page index where the signature should be added (0 is the first page)
|
|
||||||
const page = pdfDocModified.getPages()[pageIndex];
|
|
||||||
|
|
||||||
const signatureCanvasPositionPixels = parseTransform(signatureCanvas);
|
|
||||||
const signatureCanvasPositionRelative = {
|
|
||||||
x: signatureCanvasPositionPixels.x / pdfCanvas.offsetWidth,
|
|
||||||
y: signatureCanvasPositionPixels.y / pdfCanvas.offsetHeight,
|
|
||||||
width: signatureCanvasPositionPixels.width / pdfCanvas.offsetWidth,
|
|
||||||
height: signatureCanvasPositionPixels.height / pdfCanvas.offsetHeight,
|
|
||||||
}
|
|
||||||
const signaturePositionPdf = {
|
|
||||||
x: signatureCanvasPositionRelative.x * page.getWidth(),
|
|
||||||
y: signatureCanvasPositionRelative.y * page.getHeight(),
|
|
||||||
width: signatureCanvasPositionRelative.width * page.getWidth(),
|
|
||||||
height: signatureCanvasPositionRelative.height * page.getHeight(),
|
|
||||||
}
|
|
||||||
|
|
||||||
page.drawImage(signatureImageObject, {
|
|
||||||
x: signaturePositionPdf.x,
|
|
||||||
y: page.getHeight() - signaturePositionPdf.y - signaturePositionPdf.height,
|
|
||||||
width: signaturePositionPdf.width,
|
|
||||||
height: signaturePositionPdf.height,
|
|
||||||
});
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
const modifiedPdfBytes = await pdfDocModified.save();
|
|
||||||
const blob = new Blob([modifiedPdfBytes], { type: 'application/pdf' });
|
|
||||||
const link = document.createElement('a');
|
|
||||||
link.href = URL.createObjectURL(blob);
|
|
||||||
link.download = 'signed-document.pdf';
|
|
||||||
link.click();
|
|
||||||
}
|
|
||||||
});
|
|
||||||
|
|
||||||
async function dataURLToArrayBuffer(dataURL) {
|
|
||||||
const response = await fetch(dataURL);
|
|
||||||
return response.arrayBuffer();
|
|
||||||
}
|
|
||||||
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
</body>
|
</body>
|
||||||
</html>
|
</html>
|
||||||
Loading…
Reference in a new issue