From 1b9b0010a7bd98d1dcadb011b2a577d7b2eee78c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Cl=C3=A9ro?= <oclero@hotmail.com>
Date: Sun, 10 Nov 2024 12:44:52 +0100
Subject: [PATCH] Fix QTabBar scroll

---
 lib/src/style/EventFilters.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/src/style/EventFilters.cpp b/lib/src/style/EventFilters.cpp
index fe8e63d..fe5856a 100644
--- a/lib/src/style/EventFilters.cpp
+++ b/lib/src/style/EventFilters.cpp
@@ -239,12 +239,20 @@ bool TabBarEventFilter::eventFilter(QObject* watchedObject, QEvent* evt) {
     _tabBar->setIconSize(_tabBar->iconSize());
   } else if (type == QEvent::Wheel) {
     const auto* wheelEvent = static_cast<QWheelEvent*>(evt);
+
+    // Block non-horizontal scorll.
+    const bool wheelVertical = qAbs(wheelEvent->angleDelta().y()) > qAbs(wheelEvent->angleDelta().x());
+    if (wheelVertical) {
+      evt->ignore();
+      return true;
+    }
+
     auto delta = wheelEvent->pixelDelta().x();
 
     // If delta is null, it might be because we are on MacOS, using a trackpad.
     // So let's use angleDelta instead.
     if (delta == 0) {
-      delta = wheelEvent->angleDelta().y();
+      delta = wheelEvent->angleDelta().x();
     }
 
     // Invert the value if necessary.