feat: add focused_only option for workspaces and taskbar widgets

[joao-paulo-santos]

Summary

New config option focused_only = false (default) for the workspaces widget and taskbar widget. When enabled, only the monitor with keyboard or pointer focus shows the active workspace highlight color. Other monitors show their active workspace as occupied color instead.

Motivation

In multi-monitor setups, every monitor simultaneously highlights its own active workspace, making it ambiguous which monitor actually has focus. This opt-in setting makes the focused monitor visually distinct from peripheral monitors.

Type of Change

• Bug fix
• New feature
• Breaking change
• Refactoring
• Build / packaging

Related Issue

N/A

Testing

• ninja -C build clean build
• python3 tools/i18n-check.py passes
• clang-format --dry-run --Werror passes
• Tested on Hyprland with two monitors. Verified that switching focus between monitors updates workspace colors live on both the workspaces widget (pill colors) and taskbar widget (disc labels).

Manual Coverage

• Tested on Niri
• Tested on Hyprland
• Tested on Sway
• Tested on another compositor:
• Tested with different bar positions and density settings
• Tested at different interface scaling values
• Tested with multiple monitors

Screenshots / Videos

N/A.

Checklist

• This PR is ready for review, or it is marked as Draft.
• I read and followed the relevant guidance in CONTRIBUTING.md.
• I ran just format with clang-format v22+ installed, or this PR has no code changes.
• I ran the relevant build or test commands, or explained why they were not run.
• I self-reviewed the changes.
• I checked for new warnings or errors.
• I will update end-user documentation after merge, or this PR does not change user-facing configuration or behavior.
• I added or updated assets/translations/en.json, or this PR adds no new user-facing strings.
• I did not edit non-English translation files unless this PR is explicitly for translation tooling, an import/export sync, or a maintainer-requested locale change.
• I used the existing canonical names for config keys, IPC names, paths, and identifiers.

Additional Notes

Config example:

[widget.workspaces]
focused_only = true

[widget.taskbar]
focused_only = true

Implementation: workspaceFillColor() checks isFocusedOutput() when focused_only is enabled. The doUpdate() loop in both widgets tracks m_wasFocusedOutput and triggers a retarget/rebuild when focus changes, so colors update immediately when switching monitors. The taskbar setting is visible in the settings GUI when "Show Workspace Label" is enabled.

[ItsLemmy]

Thanks for the PR!
This would need to be rebased and tested on Niri too since 71% of our users are on Niri.

[joao-paulo-santos]

Thanks for the PR! This would need to be rebased and tested on Niri too since 71% of our users are on Niri.

On it, let me install Niri and setup the compositor to my liking and then test the PR branch there + rebase.

[joao-paulo-santos]

Rebased and tested working on Niri