[Question] Z-order management in Wayland

[Carsten Haitzler (The Rasterman)]

On Thu, 31 Jul 2014 01:02:33 -0700 (PDT) yan.wang at linux.intel.com said:

> E.g. When we start a new application on mobile platform, previous running
> application could be hidden and paused to reduce power consuming
> and improve response speed. If we could adjust and get z-order status, we
> could callback application to sleep. And when user restart this
> application, we could just make this slept app waked up.

you do NOT want to do this by raise/lower. even doing this in x11 is just
WRONG. in fact a good mobile wm setup would refuse to allow this. there is a
netwm request "netwm activate". this requests the window is activated. this MAY
raise the window. it may switch desktop. it may de-iconify a window. it may
also place focus on the window... unless the wm decides that this is a bad idea
right now.

you do NOT want a raise/lower etc. in wayland. you want xdg shell and an
activate request. the compositor after that decides what is best to do.

> Yan Wang
> 
> > There is currently no way to influence the stacking order of top-level
> > surfaces. Why do you need this?
> > On Jul 31, 2014 9:28 AM, <yan.wang at linux.intel.com> wrote:
> >
> >> Hi, All,
> >>    I found X provides raise/lower APIs to manger window Z-order. But
> >> there
> >> isn't related APIs in Wayland/Weston.
> >>    May it should be one design idea of Wayland in fact or I could
> >> achieve
> >> this  by current Wayland protocol?
> >>    Thanks.
> >>
> >> Yan Wang
> >> _______________________________________________
> >> wayland-devel mailing list
> >> wayland-devel at lists.freedesktop.org
> >> http://lists.freedesktop.org/mailman/listinfo/wayland-devel
> >>
> > _______________________________________________
> > wayland-devel mailing list
> > wayland-devel at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/wayland-devel
> >
> 
> _______________________________________________
> wayland-devel mailing list
> wayland-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/wayland-devel
> 


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    raster at rasterman.com