[Differential] [Request, 136 lines] D2979: Support for relative pointer motion events

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma on Wayland.
Restricted Application added subscribers: kwin, plasma-devel.
Restricted Application added projects: Plasma on Wayland, KWin.

REVISION SUMMARY
  If KWin interacts with Libinput the RelativePointerManager interface
  gets created on the Wayland server. The ForwardInputEventFilter does
  forward the relative motion events in addition to the normal motion
  events.
  
  In order to properly support the relative motion events as they are
  expected by the Wayland protocol the handling of pointer motion events
  got slightly adjusted:
  
  - Libinput Pointer event extended by the additional data points
  - Libinput Pointer event carries the delta as a QSizeF instead of
  
  QPointF
  
  - PointerInputRedirection adjusted to take a pointer motion event with
  
  more arguments
  
  - Custom QMouseEvent subclass adjusted to carry the additional members
  
  The DebugConsole is adjusted to show the relative motion events in
  addition to the global position.

TEST PLAN
  Verified the manager object is created and verified the
  events in DebugConsole. Unfortunately not aware of any test application.

REPOSITORY
  rKWIN KWin

BRANCH
  relative-pointer-events

REVISION DETAIL
  https://phabricator.kde.org/D2979

AFFECTED FILES
  autotests/libinput/input_event_test.cpp
  autotests/libinput/mock_libinput.cpp
  autotests/libinput/pointer_event_test.cpp
  debug_console.cpp
  input.cpp
  input_event.cpp
  input_event.h
  libinput/connection.cpp
  libinput/connection.h
  libinput/events.cpp
  libinput/events.h
  pointer_input.cpp
  pointer_input.h
  tests/libinputtest.cpp

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: graesslin, #kwin, #plasma_on_wayland
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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