From d604cc96978a8dfcec980e61184f5c5e51bd0f71 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bo=C5=A1tjan=20=C4=8Cade=C5=BE?=
 <badVibes--@users.noreply.github.com>
Date: Wed, 25 Feb 2026 12:20:57 +0100
Subject: [PATCH] Fix: macOS 2 finger tap moves moves slider instead of opening
 context menu (#12375)

---
 src/slic3r/GUI/IMSlider.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/slic3r/GUI/IMSlider.cpp b/src/slic3r/GUI/IMSlider.cpp
index 3bfc26cd11..15b1237410 100644
--- a/src/slic3r/GUI/IMSlider.cpp
+++ b/src/slic3r/GUI/IMSlider.cpp
@@ -1470,10 +1470,11 @@ void IMSlider::on_mouse_wheel(wxMouseEvent& evt) {
 
     ImGuiWrapper& imgui = *wxGetApp().imgui();
 
-    float wheel = 0.0f;
-    wheel = evt.GetWheelRotation() > 0 ? 1.0f : -1.0f;
+    float wheel = evt.GetWheelRotation();
+    // mac trackpads trigger this event with value 0 when right-clicking with two fingers
     if (wheel == 0.0f)
         return;
+    wheel = wheel > 0 ? 1.0f : -1.0f;
 
 #ifdef __WXOSX__
     if (wxGetKeyState(WXK_SHIFT)) {