From d5e84d664447825e65edc4fa000d4d7f4340c435 Mon Sep 17 00:00:00 2001
From: Tony Brix <tony@brix.ninja>
Date: Wed, 3 Apr 2024 00:48:51 -0600
Subject: [PATCH] docs: don't redo after new mark is made

---
 docs/js/app.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/docs/js/app.js b/docs/js/app.js
index 01b30fdc..3f14d094 100644
--- a/docs/js/app.js
+++ b/docs/js/app.js
@@ -79,6 +79,11 @@ function dataURLToBlob(dataURL) {
   return new Blob([uInt8Array], { type: contentType });
 }
 
+signaturePad.addEventListener("endStroke", () => {
+  // clear undoData when new data is added
+  undoData = [];
+});
+
 clearButton.addEventListener("click", () => {
   signaturePad.clear();
 });
@@ -87,8 +92,9 @@ undoButton.addEventListener("click", () => {
   const data = signaturePad.toData();
 
   if (data && data.length > 0) {
-    const remove = data.pop(); // remove the last dot or line
-    undoData.push(remove);
+    // remove the last dot or line
+    const removed = data.pop();
+    undoData.push(removed);
     signaturePad.fromData(data);
   }
 });