Those are provided by desktop shells rather than niri. For example Noctalia [0], or DankMaterialShell [1] which is build for niri specifically.
[0] https://github.com/noctalia-dev/noctalia-shell [1] https://github.com/AvengeMedia/DankMaterialShell
Those are provided by desktop shells rather than niri. For example Noctalia [0], or DankMaterialShell [1] which is build for niri specifically.
[0] https://github.com/noctalia-dev/noctalia-shell [1] https://github.com/AvengeMedia/DankMaterialShell