[Differential] [Request, 129 lines] D4870: [lookandfeel] Add virtual keyboard to the LockScreen

[Martin Gräßlin]

graesslin created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  This change integrates QtVirtualKeyboard into the Lock screen UI.
  
  A new button is added to the bottom row to toggle the appearance of the
  virtual keyboard. The actual keyboard is integrated through a Loader so
  that not having qtvirtualkeyboard plugin installed results in a graceful
  error instead of a failing lock screen.
  
  When the virtual keyboard is shown the remaining UI shifts upwards. This
  is done through adding the stack view into a ColumnLayout. Unfortunately
  this can result in an overlap with the clock. This needs some general
  improvement as on e.g. my system the clock is never really visible.
  
  To have the virtual keyboard working in the lock screen one also needs
  another change to kscreenlocker_greet.

TEST PLAN
  See screenshots

REPOSITORY
  R120 Plasma Workspace

BRANCH
  lockscreen-virtual-keyboard

REVISION DETAIL
  https://phabricator.kde.org/D4870

AFFECTED FILES
  lookandfeel/contents/lockscreen/LockScreenUi.qml
  lookandfeel/contents/lockscreen/VirtualKeyboard.qml

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

To: graesslin, #plasma
Cc: plasma-devel, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol
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