Fix scrolling on hidpi screens

Scrolling with libinput was unbearably slow.

QScrollBar is much better at scrolling than us, so let it handle it.

REVIEW: 128432
BUG: 357618

1 files changed, 5 insertions, 7 deletions

diff --git a/src/kitemviews/private/kitemlistsmoothscroller.h b/src/kitemviews/private/kitemlistsmoothscroller.h
index fca4b0c53..a3576a3fd 100644
--- a/src/kitemviews/private/kitemlistsmoothscroller.h
+++ b/src/kitemviews/private/kitemlistsmoothscroller.h
@@ -77,6 +77,11 @@ public:
     // stable.
     bool requestScrollBarUpdate(int newMaximum);
 
+    /**
+     * Forwards wheel events to the scrollbar, ensuring smooth and proper scrolling
+     */
+    void handleWheelEvent(QWheelEvent* event);
+
 protected:
     virtual bool eventFilter(QObject* obj, QEvent* event);
 
@@ -85,13 +90,6 @@ private slots:
                                    QAbstractAnimation::State oldState);
 
 private:
-    /**
-     * Results into a smooth-scrolling of the target dependent on the direction
-     * of the wheel event.
-     */
-    void handleWheelEvent(QWheelEvent* event);
-
-private:
     bool m_scrollBarPressed;
     bool m_smoothScrolling;
     QScrollBar* m_scrollBar;