<div dir="ltr">Just to be sure that I understand clearly, what you call 'Toolkit' is libraries like GTK, Qt, and co. that are used by developers to build their apps, isn't it ?<div><br></div><div>Finally, do you know some tiling DE/WM Wayland compliant ?</div><div><br></div><div>Kind,<br>Alexis.</div></div><br><div class="gmail_quote"><div dir="ltr">Le mer. 26 oct. 2016 à 02:17, Carsten Haitzler <<a href="mailto:raster@rasterman.com">raster@rasterman.com</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, 24 Oct 2016 18:42:31 +0000 "Alexis BRENON @Wayland" <brenon.alexis<br class="gmail_msg">
+<a href="mailto:wayland@gmail.com" class="gmail_msg" target="_blank">wayland@gmail.com</a>> said:<br class="gmail_msg">
<br class="gmail_msg">
> Hello everyone,<br class="gmail_msg">
><br class="gmail_msg">
> I would like to implement kinetic scroll in the libinput driver for Xorg.<br class="gmail_msg">
><br class="gmail_msg">
> I know that it's probably not the intended use of libinput ; as explained<br class="gmail_msg">
> in the documentation, it's the client that have to manage that.<br class="gmail_msg">
><br class="gmail_msg">
> However, as an Xorg user not happy with the synaptics driver, I would like<br class="gmail_msg">
> to add a similar feature (fixing small disagreements encountered with<br class="gmail_msg">
> synaptics) to libinput, allowing Xorg users to easily move to libinput<br class="gmail_msg">
> without losing this feature.<br class="gmail_msg">
><br class="gmail_msg">
> My first idea is to implement the kinetic scroll using a thread that sends<br class="gmail_msg">
> axis events as long as there is no button event, key event or motion event<br class="gmail_msg">
> higher than a threshold.<br class="gmail_msg">
><br class="gmail_msg">
> It makes some time since the last time I developed in C, and maybe it's not<br class="gmail_msg">
> the better way to do it. I would be happy to hear your advices.<br class="gmail_msg">
><br class="gmail_msg">
> One thing I'm thinking of is then to add some options in the Xorg<br class="gmail_msg">
> configuration file to enable/disable this feature, choose the events<br class="gmail_msg">
> stopping the kinetic scroll and change some thresholds. This will allow to<br class="gmail_msg">
> easily disable this feature in the future in case the clients manage the<br class="gmail_msg">
> kinetic scroll on their own.<br class="gmail_msg">
><br class="gmail_msg">
> What do you think of this? Is there someone already working on it? Is my<br class="gmail_msg">
> proposition a good way to implement it?<br class="gmail_msg">
><br class="gmail_msg">
> Thanks for your attention.<br class="gmail_msg">
><br class="gmail_msg">
> Kind regards,<br class="gmail_msg">
> Alexis BRENON.<br class="gmail_msg">
<br class="gmail_msg">
we already do kinetic scrolling higher up in the toolkit. we do acceleration<br class="gmail_msg">
using these events and we do smooth animated scrolling in our scroller and not<br class="gmail_msg">
just stepping, as well as momentum as we slid with bouncing at the ends. it's<br class="gmail_msg">
already done in toolkit out of the box. if you try and hack this in at the<br class="gmail_msg">
input layer this simply doubles the amount of this and likely makes the user<br class="gmail_msg">
experience worse. this would have to be off by default and if it's off by<br class="gmail_msg">
default... you need ways of turning it on client by client ... and even then<br class="gmail_msg">
there are a pile of other problems you'll hit. so my suggestion is - don't. add<br class="gmail_msg">
to your favorite toolkits instead if they don't have it. they have far more<br class="gmail_msg">
information about the context at the time and the use cases needed etc.<br class="gmail_msg">
<br class="gmail_msg">
<br class="gmail_msg">
<br class="gmail_msg">
--<br class="gmail_msg">
------------- Codito, ergo sum - "I code, therefore I am" --------------<br class="gmail_msg">
The Rasterman (Carsten Haitzler) <a href="mailto:raster@rasterman.com" class="gmail_msg" target="_blank">raster@rasterman.com</a><br class="gmail_msg">
<br class="gmail_msg">
</blockquote></div>