From cae8cd0aa9703a57e658190280a75a71f7e6f81e Mon Sep 17 00:00:00 2001
From: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
Date: Tue, 22 Oct 2024 00:44:22 +0100
Subject: [PATCH] Add on hover color to sign (#2059)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

* Fixed layering issue with z-index, and added smoother transitions for… (#1996)

Fixed layering issue with z-index, and added smoother transitions for signing

Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>

* Delete package-lock.json

---------

Co-authored-by: Surya Karthikeyan Vijayalakshmi <108506548+SuryaKV101@users.noreply.github.com>
---
 src/main/resources/static/css/sign.css    |  35 +-
 src/main/resources/static/js/draggable.js |  36 ++
 src/main/resources/templates/sign.html    | 515 +++++++++++-----------
 3 files changed, 324 insertions(+), 262 deletions(-)
 create mode 100644 src/main/resources/static/js/draggable.js

diff --git a/src/main/resources/static/css/sign.css b/src/main/resources/static/css/sign.css
index c6ae3374..26bb1677 100644
--- a/src/main/resources/static/css/sign.css
+++ b/src/main/resources/static/css/sign.css
@@ -1,7 +1,9 @@
 select#font-select,
 select#font-select option {
-  height: 60px; /* Adjust as needed */
-  font-size: 30px; /* Adjust as needed */
+  height: 60px;
+  /* Adjust as needed */
+  font-size: 30px;
+  /* Adjust as needed */
 }
 
 .drawing-pad-container {
@@ -13,10 +15,12 @@ select#font-select option {
   width: 100%;
   height: 300px;
 }
+
 #box-drag-container {
   position: relative;
   margin: 20px 0;
 }
+
 .draggable-buttons-box {
   position: absolute;
   top: 0;
@@ -24,16 +28,37 @@ select#font-select option {
   width: 100%;
   display: flex;
   gap: 5px;
+  z-index: 5;
 }
-.draggable-buttons-box > button {
-  z-index: 10;
+
+.draggable-buttons-box>button {
+  z-index: 4;
   background-color: rgba(13, 110, 253, 0.1);
 }
+
 .draggable-canvas {
-  border: 1px solid red;
+  border: 2px solid #3498db;
   position: absolute;
   touch-action: none;
   user-select: none;
   top: 0px;
   left: 0;
+  z-index: 100;
+  cursor: grab;
+  transition: transform 0.1s ease-out;
+  background-color: rgba(52, 152, 219, 0.1);
+  /* Light blue background */
+}
+
+.draggable-canvas:active {
+  cursor: grabbing;
+  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
+  /* Shadow on active drag */
+}
+
+.draggable-canvas:hover {
+  border: 2px solid #2980b9;
+  /* Darker border on hover */
+  background-color: rgba(52, 152, 219, 0.2);
+  /* Darken background on hover */
 }
diff --git a/src/main/resources/static/js/draggable.js b/src/main/resources/static/js/draggable.js
new file mode 100644
index 00000000..cba6f3c0
--- /dev/null
+++ b/src/main/resources/static/js/draggable.js
@@ -0,0 +1,36 @@
+const draggableElement = document.querySelector('.draggable-canvas');
+
+// Variables to store the current position of the draggable element
+let offsetX, offsetY, isDragging = false;
+
+draggableElement.addEventListener('mousedown', (e) => {
+  // Get the offset when the mouse is clicked inside the element
+  offsetX = e.clientX - draggableElement.getBoundingClientRect().left;
+  offsetY = e.clientY - draggableElement.getBoundingClientRect().top;
+
+  // Set isDragging to true
+  isDragging = true;
+
+  // Add event listeners for mouse movement and release
+  document.addEventListener('mousemove', onMouseMove);
+  document.addEventListener('mouseup', onMouseUp);
+});
+
+function onMouseMove(e) {
+  if (isDragging) {
+    // Calculate the new position of the element
+    const left = e.clientX - offsetX;
+    const top = e.clientY - offsetY;
+
+    // Move the element by setting its style
+    draggableElement.style.left = `${left}px`;
+    draggableElement.style.top = `${top}px`;
+  }
+}
+
+function onMouseUp() {
+  // Stop dragging and remove event listeners
+  isDragging = false;
+  document.removeEventListener('mousemove', onMouseMove);
+  document.removeEventListener('mouseup', onMouseUp);
+}
diff --git a/src/main/resources/templates/sign.html b/src/main/resources/templates/sign.html
index 919226ae..df15335c 100644
--- a/src/main/resources/templates/sign.html
+++ b/src/main/resources/templates/sign.html
@@ -1,8 +1,11 @@
 <!DOCTYPE html>
-<html th:lang="${#locale.language}" th:dir="#{language.direction}" th:data-language="${#locale.toString()}" xmlns:th="https://www.thymeleaf.org">
-  <head>
+<html th:lang="${#locale.language}" th:dir="#{language.direction}" th:data-language="${#locale.toString()}"
+  xmlns:th="https://www.thymeleaf.org">
+
+<head>
   <th:block th:insert="~{fragments/common :: head(title=#{sign.title}, header=#{sign.header})}"></th:block>
-    <link rel="stylesheet" th:href="@{'/css/sign.css'}">
+  <link rel="stylesheet" th:href="@{'/css/sign.css'}">
+
   <th:block th:each="font : ${fonts}">
     <style th:inline="text">
       @font-face {
@@ -11,268 +14,266 @@
       }
 
       #font-select option[value="[[${font.name}]]"] {
-        font-family: "[[${font.name}]]", cursive;
-      }
-      #font-select option[value='/*[[${font.name}]]*/'] {
-        font-family: '/*[[${font.name}]]*/', cursive;
+        font-family: "[[${font.name}]]",
+        cursive;
       }
     </style>
   </th:block>
-    <script th:src="@{'/js/thirdParty/signature_pad.umd.min.js'}"></script>
-    <script th:src="@{'/js/thirdParty/interact.min.js'}"></script>
-  </head>
 
-  <body>
-    <div id="page-container">
-      <div id="content-wrap">
-        <th:block th:insert="~{fragments/navbar.html :: navbar}"></th:block>
-        <br><br>
-        <div class="container">
-          <div class="row justify-content-center">
-            <div class="col-md-6 bg-card">
-              <div class="tool-header">
-                <span class="material-symbols-rounded tool-header-icon sign">signature</span>
-                <span class="tool-header-text" th:text="#{sign.header}"></span>
-              </div>
+  <script th:src="@{'/js/thirdParty/signature_pad.umd.min.js'}"></script>
+  <script th:src="@{'/js/thirdParty/interact.min.js'}"></script>
+</head>
 
-              <!-- pdf selector -->
-              <div 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 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 th:replace="~{fragments/common :: fileSelector(name='image-upload', multipleInputsForSingleRequest=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>
-                  </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>
-                </div>
-              </div>
-
-              <!-- draggables box -->
-              <div id="box-drag-container" class="show-on-file-selected">
-                <canvas id="pdf-canvas"></canvas>
-                <script th:src="@{'/js/thirdParty/pdf-lib.min.js'}"></script>
-                <script th: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('dir')==='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('dir')==='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>
-              </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>
-                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>
+<body>
+  <div id="page-container">
+    <div id="content-wrap">
+      <th:block th:insert="~{fragments/navbar.html :: navbar}"></th:block>
+      <br><br>
+      <div class="container">
+        <div class="row justify-content-center">
+          <div class="col-md-6 bg-card">
+            <div class="tool-header">
+              <span class="material-symbols-rounded tool-header-icon sign">signature</span>
+              <span class="tool-header-text" th:text="#{sign.header}"></span>
             </div>
+
+            <!-- pdf selector -->
+            <div
+              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 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
+                  th:replace="~{fragments/common :: fileSelector(name='image-upload', multipleInputsForSingleRequest=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) {
+                    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>
+              </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>
+              </div>
+            </div>
+
+            <!-- draggables box -->
+            <div id="box-drag-container" class="show-on-file-selected">
+              <canvas id="pdf-canvas"></canvas>
+              <script th:src="@{'/js/thirdParty/pdf-lib.min.js'}"></script>
+              <script th: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('dir')==='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('dir')==='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>
+            </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>
+              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>
-      <th:block th:insert="~{fragments/footer.html :: footer}"></th:block>
     </div>
-  </body>
+
+    <th:block th:insert="~{fragments/footer.html :: footer}"></th:block>
+  </div>
+
+  <!-- Link the draggable.js file -->
+  <script src="/path/to/your/draggable.js"></script>
+</body>
+
 </html>
\ No newline at end of file