[Wayland-bugs] [Bug 101436] Screen size cannot rely on wl_output scale and geometry

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101436

--- Comment #3 from Olivier Fourdan <fourdan at xfce.org> ---
(In reply to Jonas Ådahl from comment #2)
> (In reply to Pekka Paalanen from comment #1)
> [...]
> > 
> > E.g. for fullscreening, I would hope apps used WM protocols to ask what
> > their fullscreen size should be, but I understand that's wishful thinking.
> > So how exactly are these details used?
> > 
> 
> How maximize and fullscreen works I'm not very familiar with.

For maximized state and fullscreen, x11 apps use the relevant EWMH protocol:

 * _NET_WM_STATE for maximized and "normal" fullscreen [1]
 * _NET_WM_FULLSCREEN_MONITORS for fulscreen across different monitors [2]

The later uses Xinerama monitor indices to list the monitors (!)

[1]
https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html#idm140200472615568
[2]
https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html#idm140200472531472

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