[Differential] [Request, 99 lines] D3488: [platforms/wayland] Use a ConfinedPointer if available

[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
  This supports "grabbing" the pointer on right ctrl key just like on X11.
  If the Wayland server supports pointer constraints protocol, the nested
  Wayland compositor creates a confined pointer if the right ctrl key is
  pressed.
  
  On another right ctrl press the (active) constraint gets removed again.
  
  To indicate the current state the window title gets updated. This also
  implements window title support for the first time.
  
  This change implement https://phabricator.kde.org/T4604.

TEST PLAN
  Tested with a modified KWin with server-side pointer constraints support

REPOSITORY
  rKWIN KWin

BRANCH
  wayland-platform-confined-pointer

REVISION DETAIL
  https://phabricator.kde.org/D3488

AFFECTED FILES
  plugins/platforms/wayland/wayland_backend.cpp
  plugins/platforms/wayland/wayland_backend.h

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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