D8748: [libinput] Find screen for touch screen devices and calibrate accordingly

[Martin Flöser]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma.
Restricted Application added a project: KWin.
Restricted Application added subscribers: kwin, plasma-devel.

REVISION SUMMARY
  This change finds the screen for a touch screen device based on:
  
  - number available screens
  - output name defined on the touch screen device
  - internal screen
  - and physical size
  
  The id of the screen is stored in the Device allowing to adjust the
  touch points accordingly. This means instead of transferring to the
  combined display size the touch points are transferred into the output
  space and the position of the output is added. Thus in a multi screen
  system the touch points are properly mapped to the output.
  
  Furthermore the screen orientation is passed to the Device and a
  calibration matrix is set accordingly. Thus a transformed screen has the
  touch screen transformed accordingly.
  
  Please note that this only affects libinput on Wayland and not on X11!
  The x11 standalone platform needs to gain similar code.

REPOSITORY
  R108 KWin

BRANCH
  libinput-calibrate-touchscreen2

REVISION DETAIL
  https://phabricator.kde.org/D8748

AFFECTED FILES
  autotests/libinput/device_test.cpp
  autotests/libinput/mock_libinput.cpp
  autotests/libinput/mock_libinput.h
  input.cpp
  libinput/connection.cpp
  libinput/connection.h
  libinput/device.cpp
  libinput/device.h
  plugins/platforms/drm/drm_output.h
  plugins/platforms/drm/screens_drm.cpp
  plugins/platforms/drm/screens_drm.h
  screens.cpp
  screens.h

To: graesslin, #kwin, #plasma
Cc: plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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