[RFC] weston: Sony clickpad support

[David Herrmann]

Hi

On Tue, Aug 13, 2013 at 6:50 AM, Alexander E. Patrakov
<patrakov at gmail.com> wrote:
> 2013/8/12 David Herrmann <dh.herrmann at gmail.com>:
>
>> The implementation looks quite nice. I will not comment on the code
>> individually, though. I'd really like to see a libtouchpad which
>> implements all that logic. Once we start adding device drivers to
>> weston, we will end up with a mess where we have to port it to each
>> compositor we write. If gnome-shell becomes a compositor, it needs to
>> implement this again.
>>
>> libxkbcommon already abstracted the keyboard handling. Why not do the
>> same for touchpads? The "wl_touch" interface to weston is already
>> standardized, so all this library needs to provide is a state-machine
>> that converts evdev events into something similar to wl_touch.
>>
>> It's currently on my TODO list, so feel free to ignore it. But imho we
>> should try to keep user-space input drivers separate to allow reuse
>> and uniform configurations.
>
> If you set up a git repository for libtouchpad, I will help with the code there.
>
> OTOH I don't yet agree with the use of wl_touch as the output of such
> library. In the wl_touch documentation, touchscreens are mentioned,
> not touchpads. With touchpads, people often talk about moving the
> pointer, hovering, clicking and scrolling (even though scrolling is a
> gesture), and that fits better under wl_pointer.

Whoops, sure, wl_mouse it is. I just confused wl_touch with touchpads, sorry.

I did think about it a bit more and I guess pushing into weston is
fine so far. But once we start duplicating it for gnome-shell/etc. we
should start thinking about a separate library.

I will happily create a repository, but that will have to wait until
late September as I am swamped with gsoc work until then.

Cheers
David