Re: Wayland porting in gnome-settings-daemon

[Peter Hutterer <peter hutterer who-t net>]

On Tue, Jul 02, 2013 at 02:19:47PM +0200, Bastien Nocera wrote:
> Heya,
>
> This is a short list of plugins and libraries that'll need porting for
> gnome-settings-daemon to work on Wayland. Once I've had some feedback
> and comments on this, I'll file the necessary bugs and update the
> porting page on the wiki:
> https://wiki.gnome.org/Wayland/gnome-settings-daemon
>
> gnome-desktop is going to need porting, and that's going to be one of
> the hardest bits (XRandR support including backlight, and IDLETIME
> wrapper).
>
> The most urgent plugins to port would be the keyboard, mouse, wacom, and
> a11y-keyboard plugins:
> - a11y-keyboard notifications could be moved to gnome-shell directly
> - As gnome-shell will be handling input devices, we'll need to have
> gnome-shell handle all the input device properties and enumeration for
> us, or could do handle on its own (it's mostly about changing the values
> for various properties). Is there code already available, a shared
> library to be used by wayland compositors, a plan for the longer term?

yes, there is a plan. I'm currently working on libevdev which is the bottom
piece of the stack, but my plan is that there will be some library that
shares input code across compositors. Nothing more than a plan yet, though,
sorry.

> The rest of the plugins/core below
>
> Core:
> - optional plugin load based on wayland/X11
> - language and IM envvars might need reworking
> - desktop_autostart_id?
>
> a11y-settings, housekeeping, media-keys, Screensaver-proxy, smartcard,
> sound:
> - No porting required
>
> clipboard:
> - Needs porting to wayland
> - Might need a rewrite to take full advantage
>
> color:
> - Already ported? Richard?
>
> cursor:
> - Needs porting, uses XFixes extension
> - If the shell is responsible for showing/hiding the cursor, we might
> move this functionality there
>
> Wacom:
> - Button grabbing for the tablets done in common/

last I checked tablets aren't really supported in wayland yet, so this
probably needs to be put on the back-burner until a graphics tablet protocol
exists.

Cheers,
   Peter

> Power:
> - Uses XTest directly to reset idletime
>
> Remote-display:
> - Needs porting, checks for vnc-extension
>
> XRandR:
> - Depends on gnome-desktop getting ported
>
> XSettings:
> - We shouldn't need to port this, as GTK+ would be reading the values
> directly, and no translation would be necessary (what about overrides?).
> Matthias?