From 426740ba1dec2e09233a9c719533b979e8957b53 Mon Sep 17 00:00:00 2001
From: Shawn Rutledge <shawn.rutledge@qt.io>
Date: Fri, 4 Aug 2023 17:18:34 +0200
Subject: [PATCH] QMutableEventPoint::update(): update the touchpoint uniqueId
 too

Most touch events don't have uniqueIds, but it happens with TUIO
fiducial objects.

Fixes: QTBUG-115758
Change-Id: Ibacce255898ce63090bc5b888c12242838603dd5
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
(cherry picked from commit 17f61ddc63291914cbd4402f8398a6e9709f7b37)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/gui/kernel/qeventpoint.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gui/kernel/qeventpoint.cpp b/src/gui/kernel/qeventpoint.cpp
index bbb0baee799..66d4f44ea0b 100644
--- a/src/gui/kernel/qeventpoint.cpp
+++ b/src/gui/kernel/qeventpoint.cpp
@@ -536,6 +536,7 @@ void QMutableEventPoint::update(const QEventPoint &other, QEventPoint &target)
     setEllipseDiameters(target, other.ellipseDiameters());
     setRotation(target, other.rotation());
     setVelocity(target, other.velocity());
+    setUniqueId(target, other.uniqueId()); // for TUIO
 }
 
 /*! \internal