The Workspace has two stacks - one with managed windows and deleted
windows, the other includes windows from the first stack + override
redirect windows.
This change merges both stacks. It has several benefits - we will be
able to move window elevation stuff to Workspace and streamline the
scene stuff, for example it will be possible to have a root item.
Another advantage is that unmanaged windows will have
Window::stackingOrder() property set, which can be useful in the future
in qml effects or (qtquick scene if we push harder in that front).
Another advantage is that kwin will make less X11 calls when restacking
managed windows.
AbstractOutput is not so Abstract and it's common to avoid the word
"Abstract" in class names as it doesn't contribute any new information.
It also significantly reduces the line width in some places.
Right now Workspace and SessionManagement were entangled with
SessionManager being a dumb class that just signalled to Workspace to do
the work.
The code, however, lived in sm.cpp despite being part of workspace.
This commit is an initial cleanup to strip some X11 specific features
from Workspace and move towards having the right code in the right
files. It should hopefully help get us in the right direction we get
some wayland session management.
Behaviour should be unchanged.
The .clang-format file is based on the one in ECM except the following
style options:
- AlwaysBreakBeforeMultilineStrings
- BinPackArguments
- BinPackParameters
- ColumnLimit
- BreakBeforeBraces
- KeepEmptyLinesAtTheStartOfBlocks
The Compositor contains nothing that can potentially get dirty and need
repainting.
As is, the advantages of this move aren't really noticeable, but it
makes sense with multiple scenes.
Backend parts are far from ideal, they can be improved later on as we
progress with the scene redesign.
This is a little helper that can be very convenient with our transition
from int-based screen ids to AbstractOutput.
As is, the main issue with int screen ids is that they are extremely
dynamic.
This patch has one behavioral change - raiseOrLowerClient() will not
work if the client is not on the current virtual desktop.
However, raiseOrLowerClient() can be called only in two cases:
* user triggers the raise or lower shortcut for the active client. Since
the active client is on the current virtual desktop, it's not an issue
* an x11 window restacks itself. It makes no sense if an x11 window
restacks itself while it's inactive or not on current virtual desktop.
Also, the Opposite restack mode is rarely used, some window managers
don't even bother implementing it. So, having such a constraint should
not be a problem.
The main reason for not allowing raiseOrLowerClient() for windows that
are not on the current virtual desktop is that a window can be on
multiple virtual desktops. If a window is on A and B virtual desktops,
the only logical option is to toggle stacking position if the window is
on the current desktop. It's the only viable option as kwin does not
maintain per virtual desktop stacking order.
toplevel.h is included in many places. Changing virtualdesktops.h may
trigger rebuild of all kwin.
With this change, only cpp files that use virtualdesktops.h will need to
be recompiled.
We have 2 equivalent code paths for x11 and wayland unnecessarily, unify
them under the same method.
Rename m_clients to m_x11Clients so that it's clear what the difference
is between m_clients and m_allClients.
We want panels to be behind fullscreen windows, but osd windows above
them. With the current layer promotion logic, the panel will be promoted
to the osd layer, which is undesirable. This change restores the old
behavior by allowing layer promotion only to ActiveLayer.
BUG: 436985
Workspace::constrainedStackingOrder() is a constant source of issues.
This change replaces the current logic that builds the stacking order to
hopefully make constrainedStackingOrder() less crashy.
With the new version, constrainedStackingOrder() doesn't perform layer
caching. On the other hand, it's quite rare to see apps in the wild that
have more than just 1 or 2 members in the window group.
BUG: 436095
Currently, the Workspace has no any api to constrain one window above
another. This results in having hacks such as keepDeletedTransientAbove()
This change introduces a basic api to constrain a given window above
another. It can be used for ensuring that transient windows are placed
above their parents. It also can be used for stacking the outline window
below the move-resize window.
Internal windows may also have transient parents. Because of that, this
change makes the workspace add internal clients to the stacking order by
default. The good thing about it is that it allows us unify some input
related code for "external" windows and internal windows.
This micro optimization is simply not worth having. raiseOrLowerClient()
is not in any hot path, besides that raiseClient() is not the only place
where a window can be raised above other windows. In addition to that,
the most_recently_raised check in raiseOrLowerClient() doesn't take into
account whether the cached window is on the current activity.
Once in a while, we receive complaints from other fellow KDE developers
about the file organization of kwin. This change addresses some of those
complaints by moving all of source code in a separate directory, src/,
thus making the project structure more traditional. Things such as tests
are kept in their own toplevel directories.
This change may wreak havoc on merge requests that add new files to kwin,
but if a patch modifies an already existing file, git should be smart
enough to figure out that the file has been relocated.
We may potentially split the src/ directory further to make navigating
the source code easier, but hopefully this is good enough already.
