Re: [STUMP] Multitouch in StumpWM

[Alexander Popolitov]

On 12/06/2013 10:12 PM, J. David Smith wrote:

I am. I have a tablet that I've looked at converting into a mini linux box and was wondering if a solution like this existed.

So now I've read through Peter Hutterer's blog, where he explains, how to get multitouch events from C code, but I'm rather confused.
As far as I understand, StumpWM listens to events from X server using CLX library, and then dispatches those events to opened windows.
From that I'd expect, that CLX would be heavily using FFI's to call C-functions, but the only C-related code there seems to be in the socket.c file.
And absence of touch* events in CLX's DECLARE-EVENT macros seems to indicate, that there's no multitouch support already in CLX.

So:
1) does event-dispatching indeed occur like this (X server -> StumpWM -> windows), or windows receive events somehow directly from X?
2) How does CLX manage to avoid all this fuss with FFI-ying bunch of C-functions? Perhaps, it's using some yet more lower-level API?

On Fri, Dec 6, 2013 at 5:38 PM, Alexander Popolitov <address@hidden> wrote:

Hello everyone,

I've recently bought x86 tablet and managed to run on it linux + SBCL + StumpWM just fine.
However, interaction still heavily relies on keyboard, and I want to make it, somewhat useable in 'touchscreen-only' mode)
I've quickly hacked https://github.com/mabragor/stump-touchy-mode-line, which, together with TouchEgg launched
at startup, makes the whole setup useable.

So now I'm aimed at proper multitouch support within StumpWM, so the question is: is anybody interested in this
other than me?

Best regards,
Alex

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