289 lines
No EOL
18 KiB
HTML
289 lines
No EOL
18 KiB
HTML
<!DOCTYPE html>
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<html th:lang="${#locale.language}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
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<head>
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<th:block th:insert="~{fragments/common :: head(title=#{sign.title})}"></th:block>
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<script src="js/signature_pad.umd.min.js"></script>
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<script src="js/interact.min.js"></script>
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</head>
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<style>
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@font-face {
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font-family: 'Estonia';
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src: url(fonts/Estonia.woff2) format('woff2');
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}
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@font-face {
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font-family: 'Tangerine';
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src: url(fonts/Tangerine.woff2) format('woff2');
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}
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</style>
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<body>
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<div id="page-container">
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<div id="content-wrap">
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<div th:insert="~{fragments/navbar.html :: navbar}"></div>
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<br> <br>
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<div class="container">
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<div class="row justify-content-center">
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<div class="col-md-6">
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<h2 th:text="#{sign.header}"></h2>
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<!-- pdf selector -->
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<div th:replace="~{fragments/common :: fileSelector(name='pdf-upload', multiple=false, accept='application/pdf')}"></div>
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<script>
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document.querySelector('input[name=pdf-upload]').addEventListener('change', async (event) => {
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const file = event.target.files[0];
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if (file) {
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const pdfData = await file.arrayBuffer();
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const pdfDoc = await pdfjsLib.getDocument({ data: pdfData }).promise;
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await DraggableUtils.renderPage(pdfDoc, 0);
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document.querySelectorAll(".show-on-file-selected").forEach(el => {
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el.style.cssText = '';
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})
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}
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});
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document.addEventListener("DOMContentLoaded", () => {
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document.querySelectorAll(".show-on-file-selected").forEach(el => {
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el.style.cssText = "display:none !important";
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})
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});
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</script>
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<div class="tab-group show-on-file-selected">
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<div class="tab-container" th:title="#{sign.upload}">
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<div th:replace="~{fragments/common :: fileSelector(name='image-upload', multiple=true, accept='image/*', inputText=#{imgPrompt})}"></div>
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<script>
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const imageUpload = document.querySelector('input[name=image-upload]');
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imageUpload.addEventListener('change', e => {
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if(!e.target.files) {
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return;
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}
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for (const imageFile of e.target.files) {
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var reader = new FileReader();
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reader.readAsDataURL(imageFile);
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reader.onloadend = function (e) {
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DraggableUtils.createDraggableCanvasFromUrl(e.target.result);
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};
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}
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});
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</script>
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</div>
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<div class="tab-container drawing-pad-container" th:title="#{sign.draw}">
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<canvas id="drawing-pad-canvas"></canvas>
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<br>
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<button id="clear-signature" class="btn btn-outline-danger mt-2" onclick="signaturePad.clear()" th:text="#{sign.clear}"></button>
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<button id="save-signature" class="btn btn-outline-success mt-2" onclick="addDraggableFromPad()" th:text="#{sign.add}"></button>
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<script>
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const signaturePadCanvas = document.getElementById('drawing-pad-canvas');
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const signaturePad = new SignaturePad(signaturePadCanvas, {
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minWidth: 1,
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maxWidth: 2,
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penColor: 'black',
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});
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function addDraggableFromPad() {
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if (signaturePad.isEmpty()) return;
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const startTime = Date.now();
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const croppedDataUrl = getCroppedCanvasDataUrl(signaturePadCanvas)
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console.log(Date.now() - startTime);
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DraggableUtils.createDraggableCanvasFromUrl(croppedDataUrl);
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}
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function getCroppedCanvasDataUrl(canvas) {
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// code is from: https://github.com/szimek/signature_pad/issues/49#issuecomment-1104035775
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let originalCtx = canvas.getContext('2d');
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let originalWidth = canvas.width;
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let originalHeight = canvas.height;
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let imageData = originalCtx.getImageData(0,0, originalWidth, originalHeight);
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let minX = originalWidth + 1, maxX = -1, minY = originalHeight + 1, maxY = -1, x = 0, y = 0, currentPixelColorValueIndex;
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for (y = 0; y < originalHeight; y++) {
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for (x = 0; x < originalWidth; x++) {
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currentPixelColorValueIndex = (y * originalWidth + x) * 4;
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let currentPixelAlphaValue = imageData.data[currentPixelColorValueIndex + 3];
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if (currentPixelAlphaValue > 0) {
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if (minX > x) minX = x;
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if (maxX < x) maxX = x;
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if (minY > y) minY = y;
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if (maxY < y) maxY = y;
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}
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}
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}
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let croppedWidth = maxX - minX;
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let croppedHeight = maxY - minY;
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if (croppedWidth < 0 || croppedHeight < 0) return null;
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let cuttedImageData = originalCtx.getImageData(minX, minY, croppedWidth, croppedHeight);
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let croppedCanvas = document.createElement('canvas'),
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croppedCtx = croppedCanvas.getContext('2d');
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croppedCanvas.width = croppedWidth;
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croppedCanvas.height = croppedHeight;
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croppedCtx.putImageData(cuttedImageData, 0, 0);
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return croppedCanvas.toDataURL();
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}
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function resizeCanvas() {
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// When zoomed out to less than 100%, for some very strange reason,
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// some browsers report devicePixelRatio as less than 1
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// and only part of the canvas is cleared then.
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var ratio = Math.max(window.devicePixelRatio || 1, 1);
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// This part causes the canvas to be cleared
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signaturePadCanvas.width = signaturePadCanvas.offsetWidth * ratio;
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signaturePadCanvas.height = signaturePadCanvas.offsetHeight * ratio;
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signaturePadCanvas.getContext("2d").scale(ratio, ratio);
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// This library does not listen for canvas changes, so after the canvas is automatically
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// cleared by the browser, SignaturePad#isEmpty might still return false, even though the
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// canvas looks empty, because the internal data of this library wasn't cleared. To make sure
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// that the state of this library is consistent with visual state of the canvas, you
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// have to clear it manually.
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signaturePad.clear();
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}
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new IntersectionObserver((entries, observer) => {
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if (entries.some(entry => entry.intersectionRatio > 0)) {
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resizeCanvas();
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}
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}).observe(signaturePadCanvas);
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new ResizeObserver(resizeCanvas).observe(signaturePadCanvas);
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</script>
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<style>
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.drawing-pad-container {
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text-align: center;
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}
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#drawing-pad-canvas {
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background: rgba(125,125,125,0.2);
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width: 100%;
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height: 300px;
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}
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</style>
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</div>
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<div class="tab-container" th:title="#{sign.text}">
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<label class="form-check-label" for="sigText" th:text="#{text}"></label>
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<input type="text" class="form-control" id="sigText" name="sigText">
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<label th:text="#{font}"></label>
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<select class="form-control" name="font" id="font-select">
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<option value="Estonia" class="estonia-font">Estonia</option>
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<option value="Tangerine" class="tangerine-font">Tangerine</option>
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</select>
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<div class="margin-auto-parent">
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<button id="save-text-signature" class="btn btn-outline-success mt-2 margin-center" onclick="addDraggableFromText()" th:text="#{sign.add}"></button>
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</div>
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<script>
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function addDraggableFromText() {
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const sigText = document.getElementById('sigText').value;
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const font = document.querySelector('select[name=font]').value;
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const fontSize = 100;
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const canvas = document.createElement('canvas');
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const ctx = canvas.getContext('2d');
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ctx.font = `${fontSize}px ${font}`;
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const textWidth = ctx.measureText(sigText).width;
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const textHeight = fontSize;
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canvas.width = textWidth;
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canvas.height = textHeight*1.35; //for tails
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ctx.font = `${fontSize}px ${font}`;
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ctx.fillText(sigText, 0, fontSize);
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const dataURL = canvas.toDataURL();
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DraggableUtils.createDraggableCanvasFromUrl(dataURL);
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}
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</script>
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<style>
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#font-select option {
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font-size: 30px;
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}
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#font-select option[value="Estonia"] {
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font-family: 'Estonia', sans-serif;
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}
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#font-select option[value="Tangerine"] {
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font-family: 'Tangerine', cursive;
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}
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#font-select option[value="Windsong"] {
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font-family: 'Windsong', cursive;
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}
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</style>
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</div>
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</div>
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<!-- draggables box -->
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<div id="box-drag-container" class="show-on-file-selected">
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<canvas id="pdf-canvas"></canvas>
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<script src="js/draggable-utils.js"></script>
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<div class="draggable-buttons-box ignore-rtl">
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<button class="btn btn-outline-secondary" onclick="DraggableUtils.deleteDraggableCanvas(DraggableUtils.getLastInteracted())">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-trash" viewBox="0 0 16 16">
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<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"/>
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<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"/>
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</svg>
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</button>
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<button class="btn btn-outline-secondary" onclick="document.documentElement.getAttribute('lang-direction')==='rtl' ? DraggableUtils.incrementPage() : DraggableUtils.decrementPage()" style="margin-left:auto">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chevron-left" viewBox="0 0 16 16">
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<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"/>
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</svg>
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</button>
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<button class="btn btn-outline-secondary" onclick="document.documentElement.getAttribute('lang-direction')==='rtl' ? DraggableUtils.decrementPage() : DraggableUtils.incrementPage()">
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<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chevron-right" viewBox="0 0 16 16">
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<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"/>
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</svg>
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</button>
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</div>
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<style>
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#box-drag-container {
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position: relative;
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}
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#pdf-canvas {
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box-shadow: 0px 0px 8px rgba(0, 0, 0, 0.384);
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margin: 20px 0;
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width: 100%;
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}
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.draggable-buttons-box {
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position: absolute;
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top: 20px;
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padding: 10px;
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width: 100%;
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display: flex;
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gap: 5px;
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}
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.draggable-buttons-box > button {
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z-index: 10;
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background-color: rgba(13, 110, 253, 0.1);
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}
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.draggable-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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user-select: none;
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top: 0px;
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left: 0;
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}
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</style>
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</div>
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<!-- download button -->
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<div class="margin-auto-parent">
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<button id="download-pdf" class="btn btn-primary mb-2 show-on-file-selected margin-center">Download PDF</button>
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</div>
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<script>
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document.getElementById("download-pdf").addEventListener('click', async() => {
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const modifiedPdf = await DraggableUtils.getOverlayedPdfDocument();
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const modifiedPdfBytes = await modifiedPdf.save();
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const blob = new Blob([modifiedPdfBytes], { type: 'application/pdf' });
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const link = document.createElement('a');
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link.href = URL.createObjectURL(blob);
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link.download = 'signed-document.pdf';
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link.click();
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});
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</script>
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</div>
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</div>
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</div>
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</div>
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<div th:insert="~{fragments/footer.html :: footer}"></div>
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</div>
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</body>
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</html> |