From 42147e88398a77394f06563765953da7f5cb3f11 Mon Sep 17 00:00:00 2001
From: Calixte Denizet <calixte.denizet@gmail.com>
Date: Fri, 24 Nov 2023 16:00:00 +0100
Subject: [PATCH] [Editor] Only focus the canvas for mouse events when drawing
 in the canvas

And if we've to focus it, we must prevent scrolling to avoid to draw at an
unexpected position.
---
 src/display/editor/ink.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/display/editor/ink.js b/src/display/editor/ink.js
index cc5288706..adb92fd59 100644
--- a/src/display/editor/ink.js
+++ b/src/display/editor/ink.js
@@ -660,8 +660,13 @@ class InkEditor extends AnnotationEditor {
 
     event.preventDefault();
 
-    if (event.type !== "mouse") {
-      this.div.focus();
+    if (
+      event.pointerType !== "mouse" &&
+      !this.div.contains(document.activeElement)
+    ) {
+      this.div.focus({
+        preventScroll: true /* See issue #17327 */,
+      });
     }
 
     this.#startDrawing(event.offsetX, event.offsetY);