Hello!
Rohit Burra
iamrohit7 at gmail.com
Thu Oct 27 18:25:36 UTC 2016
I am Rohit, a student at Vishnu Institute of Technology. I am interested in
the Wayland project and would like to contribute. I can write code in C,
Python. My GitHub profile: https://github.com/iamrohit7/ Can anyone please
help me get started? I tried searching for beginner/easy bugs which most
other projects have but couldn't find any.
Thank you
Cheers,
Rohit
On Oct 27, 2016 5:30 PM, <wayland-devel-request at lists.freedesktop.org>
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Today's Topics:
1. Re: Kinetic scroll in libinput Xorg driver
(Carsten Haitzler (The Rasterman))
2. Re: Kinetic scroll in libinput Xorg driver
(Carsten Haitzler (The Rasterman))
3. Re: Kinetic scroll in libinput Xorg driver (Silvan Jegen)
4. Re: Kinetic scroll in libinput Xorg driver (Carlos Garnacho)
----------------------------------------------------------------------
Message: 1
Date: Thu, 27 Oct 2016 11:10:58 +0900
From: Carsten Haitzler (The Rasterman) <raster at rasterman.com>
To: Christian Stroetmann <stroetmann at ontolab.com>
Cc: "Alexis BRENON @Wayland" <brenon.alexis+wayland at gmail.com>,
wayland-devel at lists.freedesktop.org
Subject: Re: Kinetic scroll in libinput Xorg driver
Message-ID: <20161027111058.194287583206f24ddb5eade7 at rasterman.com>
Content-Type: text/plain; charset=UTF-8
On Wed, 26 Oct 2016 14:14:13 +0200 Christian Stroetmann
<stroetmann at ontolab.com> said:
> On 26.10.2016 08:57, Alexis BRENON @Wayland wrote:
>
> @Raster: Thank you for your reminder.
>
> Maybe Enlightenment with Tiling2 and kinetic scrolling is already what
> you need.
yes. and then load the tiling module (and enable tiling for the desktops you
want it on etc. - in tiling settings).
> If I remember correctly I3 (www.i3wm.org)<http://i3wm.org/> might work
> together with Wayland as well.
possibly might work too.
> In general, I have seen at all major toolkits transistion efforts to
> Wayland since around 2 years. Some have matured while others are
> experimental so to say.
indeed.
> Best Regards
> Christian Stroetmann
>
> > 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 ?
> >
> > Finally, do you know some tiling DE/WM Wayland compliant ?
> >
> > Kind,
> > Alexis.
> >
> > Le mer. 26 oct. 2016 à 02:17, Carsten Haitzler <raster at rasterman.com
> > <mailto:raster at rasterman.com>> a écrit :
> >
> > On Mon, 24 Oct 2016 18:42:31 +0000 "Alexis BRENON @Wayland"
> > <brenon.alexis
> > +wayland at gmail.com <mailto:wayland at gmail.com>> said:
> >
> > > Hello everyone,
> > >
> > > I would like to implement kinetic scroll in the libinput driver
> > for Xorg.
> > >
> > > I know that it's probably not the intended use of libinput ; as
> > explained
> > > in the documentation, it's the client that have to manage that.
> > >
> > > However, as an Xorg user not happy with the synaptics driver, I
> > would like
> > > to add a similar feature (fixing small disagreements encountered
> > with
> > > synaptics) to libinput, allowing Xorg users to easily move to
> > libinput
> > > without losing this feature.
> > >
> > > My first idea is to implement the kinetic scroll using a thread
> > that sends
> > > axis events as long as there is no button event, key event or
> > motion event
> > > higher than a threshold.
> > >
> > > It makes some time since the last time I developed in C, and
> > maybe it's not
> > > the better way to do it. I would be happy to hear your advices.
> > >
> > > One thing I'm thinking of is then to add some options in the Xorg
> > > configuration file to enable/disable this feature, choose the
events
> > > stopping the kinetic scroll and change some thresholds. This
> > will allow to
> > > easily disable this feature in the future in case the clients
> > manage the
> > > kinetic scroll on their own.
> > >
> > > What do you think of this? Is there someone already working on
> > it? Is my
> > > proposition a good way to implement it?
> > >
> > > Thanks for your attention.
> > >
> > > Kind regards,
> > > Alexis BRENON.
> >
> > we already do kinetic scrolling higher up in the toolkit. we do
> > acceleration
> > using these events and we do smooth animated scrolling in our
> > scroller and not
> > just stepping, as well as momentum as we slid with bouncing at the
> > ends. it's
> > already done in toolkit out of the box. if you try and hack this
> > in at the
> > input layer this simply doubles the amount of this and likely
> > makes the user
> > experience worse. this would have to be off by default and if it's
> > off by
> > default... you need ways of turning it on client by client ... and
> > even then
> > there are a pile of other problems you'll hit. so my suggestion is
> > - don't. add
> > to your favorite toolkits instead if they don't have it. they have
> > far more
> > information about the context at the time and the use cases needed
> > etc.
> >
> >
> >
> > --
> > ------------- Codito, ergo sum - "I code, therefore I am"
> > --------------
> > The Rasterman (Carsten Haitzler) raster at rasterman.com
> > <mailto:raster at rasterman.com>
> >
> >
> >
> > _______________________________________________
> > wayland-devel mailing list
> > wayland-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/wayland-devel
>
--
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler) raster at rasterman.com
------------------------------
Message: 2
Date: Thu, 27 Oct 2016 11:11:01 +0900
From: Carsten Haitzler (The Rasterman) <raster at rasterman.com>
To: "Alexis BRENON @Wayland" <brenon.alexis+wayland at gmail.com>
Cc: wayland-devel at lists.freedesktop.org
Subject: Re: Kinetic scroll in libinput Xorg driver
Message-ID: <20161027111101.d8b03ab309089c7115e18577 at rasterman.com>
Content-Type: text/plain; charset=UTF-8
On Wed, 26 Oct 2016 06:57:53 +0000 "Alexis BRENON @Wayland" <brenon.alexis
+wayland at gmail.com> said:
> 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 ?
yes. toolkit == EFL, Qt, GTK+ and others (SDL is kind of a toolkit), FLTK,
...
chromium/blink is basically a toolkit of its own etc.
at least looking at gtk3 here it doesn't do momentum with wheel/axis
scrolling
(out of the box). maybe it needs enabling? qt - same story. (not in standard
scrollable regions like in the file selector) but efl's scrollable regions
do
silky smooth scrolling with momentum out of the box when you scroll your
wheel
around - also as long as thumbsrcoll is enabled (it is on mobile profile)
click
and drag to do the same like on mobile devices - with momentum when
releasing.
my point here is - if you go mess with the input events as they actually
come
from a device, it will totally mess with this kind of code that is doing all
the smoothing, interpolation and animated momentum already. it isn't the
job of
a low level input event to go and try and pretend to have events it does
not to
try and produce these kinds of effects which are already done at the toolkit
level by at least 1 toolkit, and the input device doesn't have the context
information a toolkit has to know when to stop, bounce back, or just do
this in
steps rather than with momentum (eg with a slider widget).
> Finally, do you know some tiling DE/WM Wayland compliant ?
yes. enlightenment with tiling module enabled will do this. tiling module
is a
bit rough, but people do use it.
> Kind,
> Alexis.
>
> Le mer. 26 oct. 2016 à 02:17, Carsten Haitzler <raster at rasterman.com> a
> écrit :
>
> > On Mon, 24 Oct 2016 18:42:31 +0000 "Alexis BRENON @Wayland"
<brenon.alexis
> > +wayland at gmail.com> said:
> >
> > > Hello everyone,
> > >
> > > I would like to implement kinetic scroll in the libinput driver for
Xorg.
> > >
> > > I know that it's probably not the intended use of libinput ; as
explained
> > > in the documentation, it's the client that have to manage that.
> > >
> > > However, as an Xorg user not happy with the synaptics driver, I would
> > like
> > > to add a similar feature (fixing small disagreements encountered with
> > > synaptics) to libinput, allowing Xorg users to easily move to libinput
> > > without losing this feature.
> > >
> > > My first idea is to implement the kinetic scroll using a thread that
> > sends
> > > axis events as long as there is no button event, key event or motion
> > event
> > > higher than a threshold.
> > >
> > > It makes some time since the last time I developed in C, and maybe
it's
> > not
> > > the better way to do it. I would be happy to hear your advices.
> > >
> > > One thing I'm thinking of is then to add some options in the Xorg
> > > configuration file to enable/disable this feature, choose the events
> > > stopping the kinetic scroll and change some thresholds. This will
allow
> > to
> > > easily disable this feature in the future in case the clients manage
the
> > > kinetic scroll on their own.
> > >
> > > What do you think of this? Is there someone already working on it? Is
my
> > > proposition a good way to implement it?
> > >
> > > Thanks for your attention.
> > >
> > > Kind regards,
> > > Alexis BRENON.
> >
> > we already do kinetic scrolling higher up in the toolkit. we do
> > acceleration
> > using these events and we do smooth animated scrolling in our scroller
and
> > not
> > just stepping, as well as momentum as we slid with bouncing at the ends.
> > it's
> > already done in toolkit out of the box. if you try and hack this in at
the
> > input layer this simply doubles the amount of this and likely makes the
> > user
> > experience worse. this would have to be off by default and if it's off
by
> > default... you need ways of turning it on client by client ... and even
> > then
> > there are a pile of other problems you'll hit. so my suggestion is -
> > don't. add
> > to your favorite toolkits instead if they don't have it. they have far
more
> > information about the context at the time and the use cases needed etc.
> >
> >
> >
> > --
> > ------------- Codito, ergo sum - "I code, therefore I am" --------------
> > The Rasterman (Carsten Haitzler) raster at rasterman.com
> >
> >
--
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler) raster at rasterman.com
------------------------------
Message: 3
Date: Thu, 27 Oct 2016 09:31:19 +0200
From: Silvan Jegen <s.jegen at gmail.com>
To: "Alexis BRENON @Wayland" <brenon.alexis+wayland at gmail.com>
Cc: "wayland-devel at lists.freedesktop.org"
<wayland-devel at lists.freedesktop.org>, Carsten Haitzler
<raster at rasterman.com>
Subject: Re: Kinetic scroll in libinput Xorg driver
Message-ID:
<CAKvUva-AyjnjT3WrJ+RBqQthHq6eh7LUUn9_Ce=SJ+it8c5j7A at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
On Wed, Oct 26, 2016 at 8:57 AM, Alexis BRENON @Wayland
<brenon.alexis+wayland at gmail.com> wrote:
> Finally, do you know some tiling DE/WM Wayland compliant ?
The two that come to mind are:
https://github.com/michaelforney/velox Velox: a Wayland port of dwm
with minimal dependencies
http://swaywm.org/ Sway: which is a port of i3 to Wayland IIRC
Cheers,
Silvan
------------------------------
Message: 4
Date: Thu, 27 Oct 2016 11:51:00 +0200
From: Carlos Garnacho <carlosg at gnome.org>
To: Carsten Haitzler <raster at rasterman.com>
Cc: "Alexis BRENON @Wayland" <brenon.alexis+wayland at gmail.com>,
"wayland-devel at lists.freedesktop.org"
<wayland-devel at lists.freedesktop.org>
Subject: Re: Kinetic scroll in libinput Xorg driver
Message-ID:
<CAEiaqW3kYedbkoQN7Fp68gaspmWcYZ7rjh15-aK_8QjGwkDVbA at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Hey Carsten!,
On Thu, Oct 27, 2016 at 4:11 AM, Carsten Haitzler <raster at rasterman.com>
wrote:
> On Wed, 26 Oct 2016 06:57:53 +0000 "Alexis BRENON @Wayland" <brenon.alexis
> +wayland at gmail.com> said:
>
>> 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 ?
>
> yes. toolkit == EFL, Qt, GTK+ and others (SDL is kind of a toolkit),
FLTK, ...
> chromium/blink is basically a toolkit of its own etc.
>
> at least looking at gtk3 here it doesn't do momentum with wheel/axis
scrolling
> (out of the box). maybe it needs enabling?
FWIW, that should happen out of the box whenever we got
wl_pointer.axis_stop on both axes:
https://git.gnome.org/browse/gtk+/tree/gtk/gtkscrolledwindow.c#n3399
The usual caveats apply, that doesn't help if the app plays smart and
tries to implement its own scroller widget.
Cheers,
Carlos
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