- Power Saver Mode:
- Linux: PowerProfileMonitor portal (power-saver-enabled)
- Windows: PowerManager.EnergySaverStatus (WinRT)
- macOS: lowPowerModeEnabled https://developer.apple.com/documentation/foundation/nsprocessinfo/1617047-lowpowermodeenabled
- Forced colors / System Colors
- metered connection / prefers-reduced-data
- Linux: NetworkMonitor portal
- Windows: https://learn.microsoft.com/en-us/previous-versions/windows/apps/hh452990(v=win.10)
- macOS: ?
- web: prefers-reduced-data (not yet implemented anywhere)
- Scroll Bar Style (Overlay vs always visible)
- GNOME: org.gnome.desktop.interface overlay-scrolling
- Windows: UISettings.AutoHideScrollBars
- macOS: NSScroller.preferredScrollerStyle
- Web: n/a
- Text scaling factor
- GNOME: org.gnome.desktop.interface text-scaling-factor
- Windows: UISettings.TextScaleFactor
- macOS: n/a
- Web: n/a
- https://gitlab.gnome.org/GNOME/libadwaita/-/blob/main/src/adw-settings-impl-macos.c
- https://gitlab.gnome.org/GNOME/libadwaita/-/blob/main/src/adw-settings-impl-portal.c
- https://gitlab.gnome.org/GNOME/libadwaita/-/blob/main/src/adw-settings-impl-win32.c
- https://github.com/mozilla/gecko-dev/blob/71aada9d4055e420f91f3d0fa107f0328763e40b/widget/windows/nsLookAndFeel.cpp
- https://github.com/mozilla/gecko-dev/blob/71aada9d4055e420f91f3d0fa107f0328763e40b/widget/cocoa/nsLookAndFeel.mm
- https://github.com/mozilla/gecko-dev/blob/71aada9d4055e420f91f3d0fa107f0328763e40b/widget/gtk/nsLookAndFeel.cpp