Weston

[Pekka Paalanen]

On Thu, 10 Nov 2016 14:48:53 +0000
Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:

> > why is it using weston-launch when you have systemd?  
> 
> I am not sure I understand; that file is a service that's enable via
> systemctl and it launches weston once the graphic is ready, right?
> 
> How else would you start weston on boot? Is there already a weston service
> I am missing? That might simplify things for me.

Hi,

you should be starting weston, not weston-launch, when you have a
proper logind. weston-launch is for users who do not have logind
service.

weston-launch does support cases where logind exists, in which case it
remains unused - an extra setuid-root process with no purpose.

> > No, that does not fully work  
> 
> FWICT benja works already pretty well and for a kiosk like system I think
> the following is enough, or at least it is enough for benja use case ...
> isn't it? Am I missing some configuration?
> 
> ```
> [core]
> idle-time=0
> modules=xwayland.so
> 
> [shell]
> client=/usr/bin/app

This is really not meant to be used like you use it. The shell client
is a special client, it is not the place to plug in random applications
for autolaunch.

> animation=none
> close-animation=none
> startup-animation=none
> locking=false
> ```
> 
> > It may appear to work at first, but you will miss the corner cases.  
> 
> can you please indicate some of these corner cases?

I listed them already.

E.g. if you have a floating window, and you want to resize it by
dragging a pointer, the cursor is left as what the app last set it,
rather than the cursor the compositor would pick.

You cannot have screen locking.

Indications for frozen app windows is missing.

The compositor start-up will take long, because it needs to time out
before fading in since the shell client is not signalling ready. In the
future there might be more things than just fade-in that wait for the
read-signal.

If your app ever goes non-fullscreen, you will see garbage outside the
app window.

You possibly see garbage or glitches during startup if you disable the
fade-in animation.

Maybe mod+tab shows wrong blending as there is no wallpaper.

Those are just what came to mind off-hand, there's possibly more.

So yeah, it probably works for you for now, if you don't pay attention
to details and nothing in apps ever fails. I'd call that fragile.


Thanks
pq


> On Thu, Nov 10, 2016 at 10:57 AM, Pekka Paalanen <ppaalanen at gmail.com>
> wrote:
> 
> > On Thu, 10 Nov 2016 09:44:58 +0000
> > Andrea Giammarchi <andrea.giammarchi at gmail.com> wrote:
> >  
> > > It looks like you want something like benja ( https://benja.io/ ) which  
> > is  
> > > Weston + Electron based.
> > >
> > > It uses a service:
> > > https://github.com/WebReflection/benja/blob/gh-  
> > pages/os/sh/weston-compositor.service  
> > > You can enable it via `systemctl enable weston-compositor`  
> >
> > Hi,
> >
> > why is it using weston-launch when you have systemd?
> >  
> > >
> > > You also need to put
> > > ```
> > > [shell]
> > > client=/usr/bin/chromium
> > > ```
> > > or the application you want to use instead of the default desktop/shell
> > > inside the `~/.config/weston.ini` file, and this can be also a bash file
> > > that launches chrome in fullscreen or with specific parameters.  
> >
> > No, that does not fully work, unless you have modified chromium to also
> > take care of weston-desktop-shell's responsibilities.
> >
> > weston-desktop-shell does not only do the wallpaper and panel, it also
> > provides the lock screen and pointer cursors for grabs and unresponsive
> > apps, plus more. See weston-desktop-shell.xml in Weston repository.
> >
> > It may appear to work at first, but you will miss the corner cases.
> >
> > Doing that also gives the app privileges it would not have otherwise
> > (i.e. bind to and use weston_desktop_shell interface).
> >
> >
> > Thanks,
> > pq
> >  
> > > You can test that everything works as expected simply using
> > > `/usr/bin/weston-terminal` as client to find yourself within the shell  
> > (or  
> > > you can just use Benja to develop your portable app)
> > >
> > > Best Regards
> > >
> > >
> > >
> > > On Wed, Oct 26, 2016 at 3:10 PM, Nikola Popovic <  
> > nikola.popovic at rt-rk.com>  
> > > wrote:
> > >  
> > > > Greetings.
> > > >
> > > > I have installed yocto on my board. Im planing to run weston just after
> > > > boot finish and to run chromium inside weston. Is it possible to write  
> > some  
> > > > script or something in weston.ini to run chromium inside weston  
> > without my  
> > > > interaction.
> > > >
> > > > Tnx!
> > > >
> > > > --
> > > > Nikola Popovic
> > > > Software Engineer
> > > > Tel: +381 21 4801 1304
> > > > E-mail : nikola.popovic at rt-rk.com
> > > >
> > > > RT-RK LLC
> > > > Narodnog fronta 23a
> > > > 21000 Novi Sad
> > > > Serbia
> > > > www.rt-rk.com
> > > >
> > > > _______________________________________________
> > > > wayland-devel mailing list
> > > > wayland-devel at lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/wayland-devel
> > > >  
> >
> >  

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