High resolution wheel-event support from libinput

Is necessary because the support was added using a new event
and a new getter.

[ChangeLog][QtGui][libinput] Can now use the hires scrolling API
from libinput 1.19, adding this feature to QPAs using libinput directly

Task-number: QTBUG-96227
Change-Id: Ie30281de2f6391389e9e6049bc4117d3a8f63ad1
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

1 files changed, 14 insertions, 2 deletions

diff --git a/src/platformsupport/input/libinput/qlibinputpointer.cpp b/src/platformsupport/input/libinput/qlibinputpointer.cpp
index db9e81b5df..bf26075f7c 100644
--- a/src/platformsupport/input/libinput/qlibinputpointer.cpp
+++ b/src/platformsupport/input/libinput/qlibinputpointer.cpp
@@ -133,16 +133,28 @@ void QLibInputPointer::processAxis(libinput_event_pointer *e)
         angleDelta.setX(qRound(value));
 #else
     if (libinput_event_pointer_has_axis(e, LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL)) {
+#if QT_CONFIG(libinput_hires_wheel_support)
+        value = libinput_event_pointer_get_scroll_value_v120(e, LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
+#else
         value = libinput_event_pointer_get_axis_value(e, LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
+#endif
         angleDelta.setY(qRound(value));
     }
     if (libinput_event_pointer_has_axis(e, LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL)) {
+#if QT_CONFIG(libinput_hires_wheel_support)
+        value = libinput_event_pointer_get_scroll_value_v120(e, LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
+#else
         value = libinput_event_pointer_get_axis_value(e, LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
+#endif
         angleDelta.setX(qRound(value));
     }
 #endif
-    const int factor = 8;
-    angleDelta *= -factor;
+#if QT_CONFIG(libinput_hires_wheel_support)
+    const int factor = -1;
+#else
+    const int factor = -8;
+#endif
+    angleDelta *= factor;
     Qt::KeyboardModifiers mods = QGuiApplicationPrivate::inputDeviceManager()->keyboardModifiers();
     QWindowSystemInterface::handleWheelEvent(nullptr, m_pos, m_pos, QPoint(), angleDelta, mods);
 }