[xmonad] Is there a way to reparent a window manually?

Brandon Allbery allbery.b at gmail.com
Sat Jul 24 16:39:48 UTC 2021 

I'm doing it manually:
https://github.com/geekosaur/xmonad.hs/blob/pyanfar/xmonad.hs#L356-L362
which is run from the `logHook` and which I computed from the size of
mate-panel. Note that I have panels at top and bottom so you'll want to
account for that when comparing to what I computed.

On Sat, Jul 24, 2021 at 12:27 PM Platon Pronko <platon7pronko at gmail.com>
wrote:

> Hi!
>
> > But it almost looks like you're using something like DwmStyle as your
> layout, with that little tab up top including the program icon.
>
> That's actually xfce4-panel, but it takes only a portion of the horizontal
> space - the other part is usually occupied by xmobar.
>
> > I'm using MATE as my DE, for what it's worth.
>
> Thanks for the tip, I'll check it out.
>
> Actually, maybe my problems stem from the fact that I don't actually use
> most of XFCE? I only start xfce4-panel and xfce4-session - so basically
> XFCE has no say about the windows. "Full" xfce runs the Unity editor just
> fine.
>
> > _NET_WORKAREA matters because some programs (notably anything using
> Qt/KDE) use it to place their menus.
>
> How does one configure it properly? I tried searching for something
> related to _NET_WORKAREA, but it mostly find some unrelated discussions
> about initial implementation in Xmonad.
>
> Best regards,
> Platon Pronko
>
> On 2021-07-24 02:39, Brandon Allbery wrote:
> > Yeh, I can't reproduce that locally. ("Vindictive ways" is probably
> dependence on EWMH, which most programs do these days.) But it almost looks
> like you're using something like DwmStyle as your layout, with that little
> tab up top including the program icon.
> >
> > I'm using MATE as my DE, for what it's worth. (Unity Editor is not best
> pleased with it, but I assume that has more to do with being run on a 4GB
> laptop with low-end video.)
> >
> > _NET_WORKAREA matters because some programs (notably anything using
> Qt/KDE) use it to place their menus.
> >
> > On Fri, Jul 23, 2021 at 2:28 PM Platon Pronko <platon7pronko at gmail.com
> <mailto:platon7pronko at gmail.com>> wrote:
> >
> >     Hi!
> >
> >      > I'm trying to reproduce your issues with my config, but I have no
> idea what I'm doing. Can you upload a sample I can try to work with?
> >
> >     I've attached the simplest config that still reproduces the problem
> (actually, the problem can be reproduced even with using `def` instead of
> `xfceConfig`, but then the system breaks in a vindictive ways). Also I'm
> attaching a screenshot that showcases the problem - see several "menus"
> being visible simultaneously.
> >
> >      > For what it's worth, I have the packages window open and, whether
> placed away from the window (via PlaceHook) or over it, I see no problems
> with menus in either window.
> >
> >     Maybe my problem is due to xmonad-xfce interactions? What DE are you
> running (if any)?
> >
> >      > (1) Your config does not have `ewmh` configured (this seems
> unlikely); or
> >
> >     Checked - I do have `ewmh` configured since I use `xfceConfig`
> (which builds upon `desktopConfig` which in turn applies `ewmh`).
> >
> >      > (2) you're having `_NET_WORKAREA` issues.
> >
> >     I'm not sure how to test this. Moreover, why _NET_WORKAREA should be
> related to sub-window repainting?
> >
> >     Best regards,
> >     Platon Pronko
> >
> >     On 2021-07-20 18:50, Brandon Allbery wrote:
> >      > I'm trying to reproduce your issues with my config, but I have no
> idea what I'm doing. Can you upload a sample I can try to work with?
> >      >
> >      > Someone who plays Mono-based games reports they work fine with
> xmonad,k so that may not be the problem. Two others I'm aware of are:
> >      >
> >      > (1) Your config does not have `ewmh` configured (this seems
> unlikely); or
> >      > (2) you're having `_NET_WORKAREA` issues.
> >      >
> >      > If it's EWMH, simply configuring the `ewmh` combinator should fix
> it. But quite a lot of stuff required EWMH these days, so I can't imagine
> you haven't run into this before.
> >      >
> >      > `_NET_WORKAREA` is complex. I'm told by other people that they
> have no problem with it (more correctly, without it), but I find I need to
> set it for some things (notably, KDE menus) to work properly. The
> difference may be that I have a status bar at the top of my screen.
> >      >
> >      > On Fri, Apr 23, 2021 at 11:05 AM Platon Pronko <
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com> <mailto:
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com>>> wrote:
> >      >
> >      >     Hi!
> >      >
> >      >     Tried adding all the event masks, no effect. Even more, even
> if I remove all events from the mask except X.ExposureMask then mouse
> movement and keyboard buttons still work.
> >      >
> >      >     Best regards,
> >      >     Platon Pronko
> >      >
> >      >     On 2021-04-23 01:07, Brandon Allbery wrote:
> >      >      > On Thu, Apr 22, 2021 at 3:28 AM Platon Pronko <
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com> <mailto:
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com>> <mailto:
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com> <mailto:
> platon7pronko at gmail.com <mailto:platon7pronko at gmail.com>>>> wrote:
> >      >      >
> >      >      >     It seems that this could be happening due to XMonad
> being non-reparenting (I ran the same app under XFCE, and it seems to work
> okay).
> >      >      >
> >      >      >
> >      >      > This would not surprise me; it looks like they use Mono on
> Linux/Mac, and as yet there is no way to tell Mono that the window manager
> is non-reparenting so canvas widgets get messed up (they can't find
> themselves, since X11 uses window-relative addressing instead of
> screen-relative like Windows/.NET).
> >      >      >
> >      >      >     Any idea about what am I missing? Maybe my event masks
> are wrong?
> >      >      >
> >      >      >
> >      >      > You probably want all of the button-related events (see
> https://tronche.com/gui/x/xlib/events/mask.html <
> https://tronche.com/gui/x/xlib/events/mask.html> <
> https://tronche.com/gui/x/xlib/events/mask.html <
> https://tronche.com/gui/x/xlib/events/mask.html>> <
> https://tronche.com/gui/x/xlib/events/mask.html <
> https://tronche.com/gui/x/xlib/events/mask.html> <
> https://tronche.com/gui/x/xlib/events/mask.html <
> https://tronche.com/gui/x/xlib/events/mask.html>>>) so they'll be passed
> on to the child window.
> >      >      >
> >      >      > --
> >      >      > brandon s allbery kf8nh
> >      >      > allbery.b at gmail.com <mailto:allbery.b at gmail.com> <mailto:
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>> <mailto:
> allbery.b at gmail.com <mailto:allbery.b at gmail.com> <mailto:
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>>>
> >      >
> >      >
> >      >
> >      > --
> >      > brandon s allbery kf8nh
> >      > allbery.b at gmail.com <mailto:allbery.b at gmail.com> <mailto:
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>>
> >
> >
> >
> > --
> > brandon s allbery kf8nh
> > allbery.b at gmail.com <mailto:allbery.b at gmail.com>
>


-- 
brandon s allbery kf8nh
allbery.b at gmail.com
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