Desktop: Rework idle behavior, fix popups, adjust lock and login screen styling

[kajusnau]

Description of Changes

1. Reworked System Idle Behavior

   • Implemented a multi-stage idle workflow:
     • Dim: Notification is shown on the focused display and screen dims after 80% of autolock.duration (4 minutes, with default autolock.duration of 300 seconds).
     • Lock: Locks session after 100% of duration (5 minutes).
     • Screen Off: Turns off the screen after 150% of duration (7 minutes 30 seconds).
     • Suspend: Suspends the system after 300% of duration (15 minutes).
   • Each stage can be interrupted by user actions, such as moving the mouse or pressing a key, to reset the idle timer.

2. Lock Screen and Login Screen Enhancements

   • Adjusted the styling of the lock and login screens.
   • Added gtklock powerbar module with the following buttons enabled - poweroff, reboot, suspend, logout.
   • Added a custom layout for the lock screen.

3. Configuration Improvements

   • Added a separate configuration file for gtklock.
   • Added a separate configuration file for swayidle.
   • Enabled titlebar icons in labwc configuration.

4. Improved Volume and Brightness Popups

   • Popups now only appear when triggered by function key presses.
   • Prevents unnecessary popups, ensuring they only show when expected by the user.

5. Taskbar and Power Menu Adjustments

   • Rearranged buttons in the taskbar power menu into a more logical order. (Thanks Milla)
   • Hidden the taskbar keyboard layout indicator while backend support is unavailable.

6. Package and Script Updates

   • Replaced the unused powercontrol package with the ghaf-powercontrol GIVC wrapper script.
   • Use the new ghaf-powercontrol script wherever applicable.
   • Removed the nm-launcher package, preferring to launch nm-applet directly using a DBUS proxy.

7. Removed Unused Waybar

Checklist for things done

• Summary of the proposed changes in the PR description
• More detailed description in the commit message(s)
• Commits are squashed into relevant entities - avoid a lot of minimal dev time commits in the PR
• Contribution guidelines followed
• Ghaf documentation updated with the commit - https://tiiuae.github.io/ghaf/
• PR linked to architecture documentation and requirement(s) (ticket id)
• Test procedure described (or includes tests). Select one or more:
  • Tested on Lenovo X1 x86_64
  • Tested on Jetson Orin NX or AGX aarch64
  • Tested on Polarfire riscv64
• Author has run make-checks and it passes
• All automatic Github Action checks pass - see actions
• Author has added reviewers and removed PR draft status
• Change requires full re-installation
• Change can be updated with nixos-rebuild ... switch

Instructions for Testing

• List all targets that this applies to:
• Is this a new feature
  • Partially.
    • New Features:
      • Multi-stage idle workflow.
      • Separate config files for swayidle and gtklock.
      • Custom lock screen layout.
    • Improvements:
      • Enhanced volume/brightness popups, taskbar power menu order, and system config updates.
  • List the test steps to verify:
    1. Idle Behavior Testing:
       • Ensure the following behaviors occur, based on the default autolock.duration value of 300s:
         • Notification is shown on the focused display and screen dims after 80% of the set duration.
         • Locks session after 100% of the set duration.
         • Turns off the screen after 150% of the set duration.
         • Suspends the system after 300% of the set duration.
       • Confirm user interaction (e.g., mouse movement) interrupts the process at each stage.
    2. Lock Screen Enhancements:
       • Confirm the new look and feel of the lock screen based on the PR description.
       • Confirm powerbar module is visible and functions as expected (should appear near the bottom of the lock screen).
    3. Volume/Brightness Popups:
       • Test triggering popups using function keys (F1, F2, F3, F5, F6).
       • Confirm no unexpected popups appear during normal system usage, especially when opening MS Teams, Chrome, etc.
    4. Taskbar Power Menu and Layout Indicator:
       • Ensure power menu buttons are in the updated logical order.
       • Confirm the keyboard layout indicator is hidden.
    5. Script and Package Updates:
       • Verify no regression in using nm-applet from the system tray.
       • Verify no regression in system power control - taskbar and lock screen power state buttons should function as expected.
• If it is an improvement how does it impact existing functionality?
  • Simplifies and organizes idle behavior for a more intuitive user experience.
  • Improves lock screen and login screen aesthetics and functionality.

[brianmcgillion]

Approve with prejudice :)

[humaidq-tii]

Looks okay, needs testing on x1 and orin.

[milva-unikie]

I have with Kajus already done a couple of rounds of testing for this PR with Lenovo-X1. There is one more small popup issue that still needs to be fixed.

Overall I really like the improvements this PR brings to Ghaf!

[johannarautanen]

Tested with native Orin AGX and NX. Flashed to memory card

Working:

• Taskbar Power Menu; power menu buttons are in the updated logical order: lock, suspend, logout, reboot, shudown. Buttons worked ok.

• In lock-screen were are following buttons enabled - poweroff, reboot, suspend, logout. And there worked as they should.

• When lock is activated, there appeared first time and after screen activation the lock screen come visible.

• "win + L" locked the screen

• there is "caps lock is on" visible in lock screen when caps lock activated and "login failed" comes after entering wrong lock code.

• there are no any extra staff visible in Orin after this change

• automated test worked.

• applications can be launched

[johannarautanen]

Tested with crosscompile Orin AGX and NX. Flashed to memory card

Working:

• Taskbar Power Menu; power menu buttons are in the updated logical order: lock, suspend, logout, reboot, shudown. Buttons worked ok.
• In lock-screen were are following buttons enabled - poweroff, reboot, suspend, logout. And there worked as they should.
• When lock is activated, there appeared first time and after screen activation the lock screen come visible.
• "win + L" locked the screen
• there is "caps lock is on"-text visible in lock screen when caps lock activated and "login failed" comes after entering wrong lock code.
• there are no any extra staff visible in Orin after this change
• applications can be launched

[milva-unikie]

Tested on Lenovo-X1 (nixos-rebuild switch)

• Everything mentioned in testing instructions work
• Test-automation passes
• Looks great
• Works well
• No complaints :)