Port away from QWheelEvent::orientation()

We are supposed to use QWheelEvent::angleDelta() instead. Upon an
horizontal/vertical scroll event, its `x()`/`y()` method will return a
value different from zero.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/kitemviews/kitemlistcontainer.cpp b/src/kitemviews/kitemlistcontainer.cpp
index 6279b15a9..e482f6eac 100644
--- a/src/kitemviews/kitemlistcontainer.cpp
+++ b/src/kitemviews/kitemlistcontainer.cpp
@@ -176,8 +176,8 @@ void KItemListContainer::wheelEvent(QWheelEvent* event)
         return;
     }
 
-    const bool scrollHorizontally = (event->orientation() == Qt::Horizontal) ||
-                                    (event->orientation() == Qt::Vertical && !verticalScrollBar()->isVisible());
+    const bool scrollHorizontally = (event->angleDelta().x() != 0) ||
+                                    (event->angleDelta().y() != 0 && !verticalScrollBar()->isVisible());
     KItemListSmoothScroller* smoothScroller = scrollHorizontally ?
                                               m_horizontalSmoothScroller : m_verticalSmoothScroller;