Git commit 1e2a0028c3151cb38f252baa78a5f22b8cd7c7e6 by Vlad Zagorodniy.
Committed on 02/04/2019 at 20:44.
Pushed by vladz into branch 'master'.

Move keep-above clients to the Normal layer when showing desktop

Summary:
Implementation of the Show Desktop feature moves desktop windows to
the Above layer, but it doesn't take into account existing clients
that belong to the Above layer. If there are any, we have to move
them to a layer below (e.g. normal), otherwise those clients will be
visible when showing the desktop.

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: graesslin, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D20153

M  +1    -1    abstract_client.cpp
M  +3    -1    workspace.cpp

https://commits.kde.org/kwin/1e2a0028c3151cb38f252baa78a5f22b8cd7c7e6

Git commit 8010e076ee2dbcaaa39f777b2ea6dc96a5495d6f by Vlad Zagorodniy.
Committed on 16/04/2019 at 08:10.
Pushed by vladz into branch 'master'.

Revert "Move keep-above clients to the Normal layer when showing desktop"

This reverts commit 1e2a0028c3151cb38f252baa78a5f22b8cd7c7e6.

Unfortunately, we can't move clients from the above layer to the normal
layer because some of those clients have to be visible when showing
desktop, one such client for example is krunner.

M  +1    -1    abstract_client.cpp
M  +1    -3    workspace.cpp

https://commits.kde.org/kwin/8010e076ee2dbcaaa39f777b2ea6dc96a5495d6f

The behavior described here persists on neon dev unstable.

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 5.15.80
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.0

The fix was reverted because it broke other things, unfortunately. So it looks like this behavior is here to stay and is not considered to be "as designed." :/

I mean, *now* considered as designed. :)

Well, no. The bug is still there.

Git commit a7f41f26bbed92c153d2b47fb4ad295713f2f8e6 by Vlad Zahorodnii.
Committed on 01/06/2023 at 08:59.
Pushed by vladz into branch 'master'.

Make show desktop mode hide windows

After porting the desktop background window to the layer-shell protocol,
the desktop window is not raised up in the stack anymore when the
showing desktop window is activated. The main reason to avoid this is to
avoid fighting and overriding layer shell logic.

As another way to implement the show desktop mode, this change makes the
workspace hide windows that don't belong to desktop.

It's a better solution for a couple of reasons: "keep above" and other
overlay windows will be properly hidden and it lets us avoid touching
the stacking order.
Related: bug 387593, bug 469827

M  +5    -0    src/activation.cpp
M  +1    -0    src/effects.cpp
M  +1    -0    src/effects.h
M  +2    -2    src/input.cpp
M  +1    -1    src/internalwindow.cpp
M  +1    -1    src/libkwineffects/kwinanimationeffect.cpp
M  +6    -0    src/libkwineffects/kwineffects.h
M  +23   -80   src/plugins/eyeonscreen/package/contents/code/main.js
M  +2    -11   src/plugins/windowaperture/package/contents/code/main.js
M  +2    -1    src/scene/windowitem.cpp
M  +1    -1    src/scripting/workspace_wrapper.cpp
M  +1    -1    src/waylandwindow.cpp
M  +19   -12   src/window.cpp
M  +6    -1    src/window.h
M  +14   -26   src/workspace.cpp
M  +16   -15   src/x11window.cpp
M  +2    -1    src/x11window.h
M  +0    -3    src/xdgshellwindow.cpp

https://invent.kde.org/plasma/kwin/-/commit/a7f41f26bbed92c153d2b47fb4ad295713f2f8e6