All Workspace functions which were implemented in the file composite.cpp
were moved to an own class Compositor. The header entries were moved as well.
All functions calls are updated.
as the flamewar pointed out, resetShowingDesktop invalidly keeps hidden windows
the reason is that there're several updateVisiblity calls (notably one from the compositor)
which break the showingDesktop state as a side effect (before ::manage() does it's thing)
Since they also invalidate the Withdrawn mapping state, that will fail as isManaged() test
(it's also invalidly used by the compositor to set up the decoration, isManaged() used to be
true because of the updateVisibility() call before) since the result is never Withdrawn
CCBUG: 299655
REVIEW: 105303
When trying to launch kickoff (start menu) or the add widgets from
Plasma, they disappeared immediately after appearing, making them
completely unusable.
This regression was traced back to commit
bf0a241c2462072fbc52012784fa51b9b42a1baf.
In Client::setOnActivities, if newActivitiesList was empty, after
joining it and splitting it back, it would contain an empty string, i.e.
it would have a different size than before. This eventually caused the problems.
REVIEW: 105016
Client holds a SharedPointer to the TabBoxClient and only
provides access to a WeakPointer which is passed to TabBox.
ClientModel is adjusted to hold a list of WeakPointers instead
of the direct pointers.
This fixes the following reproducable crash:
1. Configure both primary and secondary TabBox with different
layouts
2. Use primary TabBox
3. Close a window, best the one which used to be active
4. Use secondary TabBox
-> Crash
The reason is that the ClientModel still contains the pointer
to the deleted TabBoxClient in step 3 and while creating the
layout access to the TabBoxClient is needed to get the Client's
icon.
By using the weak pointer it can be ensured that we don't try
to dereference the deleted pointer and prevent the crash.
CCBUG: 290482
CCBUG: 285747
CCBUG: 237345
REVIEW: 105000
- adds the kcm rule option to set the activity - one or all option like
for virtual desktops
- makes the windows obey the rule
- makes the rule enforced even when the user tries to change the
window's activity via the alt+f3 menu
REVIEW:104972
cppcheck complained about that piece of code and it was not
really good. A TabBoxClient belongs to exactly one Client which
means the setter should for Client should not be there in the
first place and was only used during construction.
REVIEW: 104909
When the Workspace is shutting down the compositor is torn down
before Clients and Unmanaged are released. This means that there
is no need to create the Deleted windows.
Furthermore creating the Deleted manipulates the stacking_order
while Workspace dtor loops over this list to release all clients.
This may cause crashes.
BUG: 282933
FIXED-IN: 4.9.0
REVIEW: 104690
The common usage of stacking order is to loop through
the list and find a specific Client. All these usages
still need to find a Client. For that the loops are
adjusted to first cast the Toplevel into a Client and
continue if the current item is no Client.
At the moment all entries in the stacking order should
still be Clients as the Deleted are not yet added.
Allows to block compositing on Client's from scripts.
Usecase: window rule cannot properly identify buggy
clients and scripting allows to just act on fullscreen
windows.
BUG: 297146
FIXED-IN: 4.9.0
REVIEW: 104448
Property invokes virtual methods returning false by default. Deleted
reimplements the isDeleted and returns true. Client returns true for
isClient. Method is not called isManaged as this is already used
inside Client.
Unlike stated at several places in the code it is not difficult to
setup the connections to all Clients.
It would have been nice if the failed attempts to connect the Clients
would not have made it into the code as emitted signals which are
nowhere used. Not to mention that like in all places the signals to
inform that a state changed were emitted before the state changed was
performed.
For this properties are defined in ClientGroup and several methods
are changed to be slots (to be invokable from scripts). On Client
the clientGroup is exported as a property.
The existing wrapper around ClientGroup is dropped as it is no
longer needed. Interestingly it was wrong anyway as it allowed to
construct a new ClientGroup, which has to be done internally.
At the same time the meta declarations get cleaned up a little bit.
Dropping the wrapper around Client and just exporting the Client's
properties. This breaks all existing scripts as it's now e.g.:
client.caption
instead of
client.caption()
But the first one is the more natural one for JavaScript and also
for everyone writing QML as well.
Setters and signals are mostly still missing in client. Other parts
like ClientGroup must be converted to properties, too.
Fixes a regression. When resize effect is available we can do a
fast resizing by only perform the resizing after the user ended
resizing the window.
REVIEW: 103363
breaks remember rules when called by ::setActivity() in ::manage()
TODO: add activity rules and make remember state applying more robust in 4.9
BUG: 264981
This input-only window is used to capture events above the
client window and preventing them from reaching the client.
It is currently used to enlarge the borders by an invisible
amount, using the ExtendedBorderRegion provided by the
decoration.
The direct method calls from class Client were removed and replaced by
connecting to the appropriate signals emitted by class Client. The
affected methods in class Tiling are notifyTilingWindowMinimizeToggle() and
updateAllTiles() which are now private Q_SLOTS.
Including tiling.h in class Client is no longer needed and was removed.
This initial commit introduces a new class Tiling. It is provided by
the files tiling/tiling.h and tiling/tiling.cpp. It covers all the
Tiling functionality which was provided by Workspace. In this initial
commit, all the functions were just moved and adjusted.
A new member variable m_tiling is introduced to Workspace, which
makes the new class Tiling accessible from Workspace.
The Tiling pointer is created in the constructor and deleted in
the deconstructor. Also a getter method tiling() is provided.
All calls from other classes are updated to use the methods in class
Tiling now.
It is possible that adding this build option broke the Scripting
component. This is something that should not happen. Unfortunately
by just ifdefing everything scripting related with scripting enabled
we have build errors. These are caused by the fact that the scripting
code includes e.g. client.h through "./../client.h". At one offending
place I changed that to "client.h", but there is also a client.h in
the scripting directory.
The includes and naming of the scripting files clearly have to be fixed!
This commit merges the two signals clientClosed() and unmanagedClosed() to windowClosed() which
is now provided by Toplevel.
The approriate slots in effects.h and effects.cpp were merges as well, since they did the
same.
The direct method calls of the method windowClosed() in SceneOpenGL and SceneXRender were
removed and are now connected to the appropriate signal in windowAdded().
The method windowGeometryShapeChanged() from the class Scene is now a slot. It is now connected to the signal geometryShapeChanged() which is sent from Toplevel instances Client and Unmanaged.
All direct method calls were deleted.
Since the TabBox functionality is not feasible for any platform KWin is
used on (e.g. tablet PCs), a build option is added to decide, if the
TabBox functionality should be build or not.
REVIEW: 101511
@Sebastian: Martin wanted me to let you know that it is now possible
to disable building Tabbox
CCMAIL: sebas@kde.org
Since the funtionality of TopMenu did no longer work in KDE4 this feature was
removed from Workspace. Every reference to it was removed as well as commentaries
and documentation.
REVIEW: 101485
Without Compositing we do not really need the PaintRedirector,
it only adds overhead. This reverts the behavior to how it was before
the PaintRedirector was introduced by just not redirecting the paint
in the event filter when compositing is not active. This should have
the lowest impact on the existing source base.
The change breaks at least oxygen window decoration when compositing
is not active as the decoration is no longer double buffered. But
as written this is exactly the behavior as used before 4.3. Given
the push today there should be enough time for all affected decos
to adjust to the change.
REVIEW: 101413
Drawbound was nowadays only used when compositing is disabled.
For the composited case, the drawbound was replaced by the resize
effect and in fact we should always just use the resize effect.
REVIEW: 101411
In case we use OpenGL compositing and KWin is started with the raster graphicssystem,
the decoration gets painted with the raster backend.
REVIEW: 101370
With raster a QPixmap is no longer a XPixmap which fails all code
which assumes that an QPixmap is an XPixmap. Depending on were in
the codebase we either convert such pixmaps to images (OpenGL) or
create a XPixmap and use QPixmap::fromX11Pixmap to get a "real"
pixmap.
It is possible that there are more code pathes were we would need
a XPixmap. Currently tested is basic functionality of no-compositing,
XRender compositing, OpenGl/GLX and OpenGL ES/EGL compositing.
For OpenGL compositing raster might result in performance improvements,
for XRender it is possible that there are regressions when using raster.
By default KWin uses whatever is the default of the system, so we just
no longer enforce native.
Of course it is a bad idea to use graphicssystem OpenGL. As that
is broken anyways in Qt, we do not check for it.
Many thanks to Philipp Knechtges for bringing up the issue, convincing
me that we need it and providing most of the patch.
REVIEW: 101132
CCMAIL: Philipp.Knechtges@rwth-aachen.de
With config option "NoPlugin" in group "Style" it is possible to
no request that KWin should be run without a decoration plugin.
This is a change for Plasma Active to properly support no decorations.
As well if a decoration plugin cannot be loaded, KWin will no longer
exit, but continue to run just without a decoration. As a nice
side-effect changes in Oxygen no longer destroy my kwin build ;-)
BUG: 224440
FIXED-IN: 4.7.0
CCMAIL: sebas@kde.org
Toolbars and Dock Widgets are clients which did not yet have
proper Shadow support. Especially the visibleRect and decorationRect
which is incorrectly used to refer to the complete window geometry
had to be updated.
In order to notice when the geometry changes a new signal is
added to toplevel and both Unmanaged and Client connect all their
signals which are emitted whenever the geometry changes in some way
to this new signal.
Shadow connects to the signal and updates the quads and region
whenever the size changes.
The branch contains the first step in reworking the kwineffects
library. This includes:
* replacing virtuals by signals and slots
* dropping some unused methods
* remove KWin::TimeLine
More to come.
Conflicts:
kwin/workspace.cpp
Since clients with restricted geometry now cannot cover the entire screen by default it was necessary to unlink the state from the actual geometry to re-provide the "restore" feature.
The patch also extends the protection of the maximized state to unilateral maximizations (emacs issue)
BUG: 265568
BUG: 252314
CCBUG: 252255
review request https://git.reviewboard.kde.org/r/100606/
Client and Unmanaged use a signal to notify that they are about to be closed.
The EffectsHandlerImpl is connected to those signals and emits the appropriate
windowClosed signal to which the effects are connected.
Check on reloading of settings if the no borders for maximized windows option got disabled.
If it got disabled unset the no border option for all maximized windows to get the borders back.
BUG: 222045
FIXED-IN: 4.6.0
svn path=/trunk/KDE/kdebase/workspace/; revision=1189981
When selecting another client in the group, the previous client
gets hidden which causes the client to be moved to the end of
the focus chain which means that it is not possible to quickly
alt+tab to the previous used tab.
So if a client is part of a client group it should not be moved
to the end of the focus change when changing the shown state in
Client::setClientShown().
svn path=/trunk/KDE/kdebase/workspace/; revision=1179234
the new property name is "_KDE_NET_WM_ACTIVITIES", of type XA_STRING,
and it's a comma-separated list of activity UUIDs.
kwin should respond to other processes changing the activity list for a
window, and filter out any bogus IDs. It also caches KActivityController's
list of activities to prevent dbus deadlocks.
CCMAIL: plasma-devel@kde.org
svn path=/trunk/KDE/kdebase/workspace/; revision=1179043
Every disorder causes every duration, which ensures the one that stays.
reality is relative. natural is disorder.
[R]obinhood[P]andey
Merging scripting from
^/branches/work/kwin_scripting TO
^/trunk
svn path=/trunk/KDE/kdebase/workspace/; revision=1177865
Make icon sizes 64x64 and 128x128 available in KWin and use it in TabBox for large icon modes.
So no more ugly upscaling.
CCBUG: 241384
svn path=/trunk/KDE/kdebase/workspace/; revision=1137264
ok'd by fredrikh.
this code is buggy right now, but I promise to squash the bugs by the 19th :)
svn path=/trunk/KDE/kdebase/workspace/; revision=1125614
This commit merges the kwin-tiling branch. Ideally it shouldn't break anything and add a few features ;-)
It was applied as a patch. Do not attempt to merge the branch directly, it has a few issues.
This feature is currently experimental, although it hasn't crashed in quite a long time. It lacks some features and probably leaks some memory. Fixes will be on the way.
Season Of KDE 2009 project by Nikhil Marathe
svn path=/trunk/KDE/kdebase/workspace/; revision=1118677
I think it's too late in the cycle to backport to 4.4.0 so if it does not cause any other problems, I will backport to 4.4 branch.
(In case I forget to backport as I am busy with non-kwin issues, please remind me in the bugreport)
Thanks to Thomas Leineweber for providing the patch and investigating the issue.
BUG: 221868
svn path=/trunk/KDE/kdebase/workspace/; revision=1084748
for now as: 1) It causes taskbar items to reshuffle, and 2) Switching
the setting during a session currently requires applications to be
restarted as well for their skip taskbar status to be reset.
svn path=/trunk/KDE/kdebase/workspace/; revision=1050472
- Add hotkeys for snap left/snap right, kwin won't need a seperate hotkey for snap up, as maximize will do that job for us, and it already has a hotkey
- Add geometry restoring to quick tile, meaning that windows can be moved back to their original state after a tile, useful if just looking at something quickly.
Thanks to mgraesslin for review and lots of mentoring.
svn path=/trunk/KDE/kdebase/workspace/; revision=1022987
* Models and Delegates for Clients and Desktops
* Horizontal, vertical and tabular layout
* Layout of one item can be configured by an XML definition
* A desktop item can include a client list
* An optional second list view showing only the selected item
* A new KCM "kwintabbox"
* An alternative TabBox with independent settings and keybindings
* Optional Highlight Windows effect integration
* List scrolls instead of removing items
* Scroll wheel support
* Cursor key support
* Middle click on item closes window
BUG: 195745
BUG: 197187
BUG: 201103
FEATURE: 118184
FEATURE: 156723
FEATURE: 177441
FEATURE: 182897
FEATURE: 193882
GUI:
svn path=/trunk/KDE/kdebase/workspace/; revision=1022861
Top screen edge (un)maximizes. Left screen edge sets window to left half of screen geometry, right edge to other half.
svn path=/trunk/KDE/kdebase/workspace/; revision=1021305
Anyone experience this problem please test and report if you still have crashes.
CCBUG: 196877
svn path=/trunk/KDE/kdebase/workspace/; revision=1001997
where the titlebar is still clickable even if it is outside the normal
work area. When struts are added or removed only move the windows that
cover the same area, leave all others untouched. If a strut is removed
on a xinerama screen that is not on the edge of the full desktop area
prevent the windows from being moved offscreen. Prevent struts/panels
from interfering with the movement of windows on other xinerama screens.
BUG: 74559
BUG: 90833
BUG: 160068
svn path=/trunk/KDE/kdebase/workspace/; revision=927466
window once the cursor leaves the window, instead wait a little while.
Patch by Marcel Partap.
BUG: 81085
svn path=/trunk/KDE/kdebase/workspace/; revision=897056
Can't work out why it doesn't move the window back onto the correct
desktop once it's restored though.
BUG: 136949
svn path=/trunk/KDE/kdebase/workspace/; revision=886439
the change removes part of a window. Also, window repaint is enough,
no need to damage the window contents.
svn path=/trunk/KDE/kdebase/workspace/; revision=866350
and not be slowed down by going through compositing. Turned on and no UI option
in the naive hope that it won't cause any real problems. Maybe effects doing
window previews should get API to suspend unredirect though.
svn path=/trunk/KDE/kdebase/workspace/; revision=851742
"<%n>" is appended to the window title. It should have no affect on LTR desktops, and on RTL desktops it fixes the display.
BUG: 154840
svn path=/trunk/KDE/kdebase/workspace/; revision=846529
- the NormalState/IconicState things in ICCCM need to match exactly
the real mapping state, so ensure that, no matter how superfluous that is
- extend the option for having live window previews either for all
windows or for only all shown windows (default)
FEATURE: 163385
svn path=/trunk/KDE/kdebase/workspace/; revision=845772
and set by the user - they're now interchangeable. Which means
that Alt+F3/Advanced/No border can put the window decoration
back on the KRunner window regardless of what Plasma or any other
app thinks.
svn path=/trunk/KDE/kdebase/workspace/; revision=788964
being v2+ (right now it says just GPL, which according to GPL itself
means any GPL). Decoration clients will come later.
CCMAIL: kwin@kde.org
svn path=/trunk/KDE/kdebase/workspace/; revision=742302
by not loading the support libraries and the complete kdelibs stack it depends
on. Gdb taking 0.5M and lousy handling of near-OOM in Linux kernel
can be a pretty bad combination :(.
svn path=/trunk/KDE/kdebase/workspace/; revision=741856
window, but I don't think it really works these days, and it's probably
also not useful at all.
svn path=/trunk/KDE/kdebase/workspace/; revision=689949
actually kept mapped, so that they still have the backing pixmap.
Plus some small tricks to prevent such windows from interfering.
Only two basic modes are implemented right now.
svn path=/trunk/KDE/kdebase/workspace/; revision=683156
r613884 | lunakl | 2006-12-15 15:57:18 +0100 (Fri, 15 Dec 2006) | 3 lines
Boy, I'm so smart, first deleting an object and then doing a consistency check on it.
svn path=/trunk/KDE/kdebase/workspace/; revision=659484
r613681 | lunakl | 2006-12-14 17:32:55 +0100 (Thu, 14 Dec 2006) | 4 lines
Check for references to no longer existing windows in transiency checks
only when the list of windows is in consistent state.
svn path=/trunk/KDE/kdebase/workspace/; revision=659481
r609071 | lunakl | 2006-11-29 14:25:38 +0100 (Wed, 29 Nov 2006) | 4 lines
+ // grab X during the release to make removing of properties, setting to withdrawn state
+ // and repareting to root an atomic operation (http://lists.kde.org/?l=kde-devel&m=116448102901184&w=2)
svn path=/trunk/KDE/kdebase/workspace/; revision=659470
r603295 | lunakl | 2006-11-08 14:59:27 +0100 (Wed, 08 Nov 2006) | 6 lines
Ok, with a compositing manager running, VisibilityNotify no longer
considers windows not visible just because a window is above them,
so the code from r198017 no longer works.
(#128648)
svn path=/trunk/KDE/kdebase/workspace/; revision=659308
r594160 | lunakl | 2006-10-10 12:28:32 +0200 (Tue, 10 Oct 2006) | 6 lines
Build the input shape on a helper window instead of directly,
this avoids having a hole in the shape temporarily. This seems
to break non-click-to-focus mouse policies on some systems
(works fine here though).
svn path=/trunk/KDE/kdebase/workspace/; revision=659292
r574237 | lunakl | 2006-08-18 15:45:50 +0200 (Fri, 18 Aug 2006) | 5 lines
Differentiate properly between shape set by the window itself
(which forces it to be a non-decorated window) and mask set
by the decoration.
svn path=/trunk/KDE/kdebase/workspace/; revision=659281
The ugly side effect of this is that there are tons of static_casts in the code now... maybe it
would be better to add effectImpl() convenience method and use that?
svn path=/branches/work/kwin_composite/; revision=652348
KShellProcess -> K3ShellProcess
KProcIO -> K3ProcIO
KProcessController -> K3ProcessController
not deprecating, as we don't have a replacement yet.
not moving yet, as kdelibs still has heavy dependencies on it.
agreed upon with dfaure.
svn path=/trunk/KDE/kdebase/workspace/; revision=646732
It may fail (or "fail") if the window is not mapped or if the geometry
doesn't match, both of which may happen due to the asynchronous
nature of X.
svn path=/branches/work/kwin_composite/; revision=637741
change, repaint just triggers repaint of the area (without e.g. the texture
updating for OpenGL).
addDamage() -> addRepaint()
CCMAIL: kwin@kde.org
svn path=/branches/work/kwin_composite/; revision=632866
change slides the old desktop out and the new one in. Should not
be really technically different from the cube.
svn path=/branches/work/kwin_composite/; revision=629163
to hide the change from Client/Unmanaged and eventually also
act as the only API available to effects.
svn path=/branches/work/kwin_composite/; revision=626360
instances and keeping them around after the window is closed, create
class Deleted as a representation of a closed window.
svn path=/branches/work/kwin_composite/; revision=626356
considers windows not visible just because a window is above them,
so the code from r198017 no longer works.
(#128648)
svn path=/trunk/KDE/kdebase/workspace/; revision=603295
Client::shortcut() or things that deal with KShortcutDialog. So, here's a little
1-liner that I stumbled across in the process.
svn path=/trunk/KDE/kdebase/workspace/; revision=599659
this avoids having a hole in the shape temporarily. This seems
to break non-click-to-focus mouse policies on some systems
(works fine here though).
svn path=/trunk/KDE/kdebase/workspace/; revision=594160
work in the work/kwin_composite branch.
svn merge revs 558154,558180,558236,558243,558258,562201
svn path=/trunk/KDE/kdebase/workspace/; revision=571776
besides drawing what should be drawn anyway, and there are
still some things missing like stacking order for override
redirect windows, but KWin is basically a compositing manager now.
svn path=/branches/work/kwin_composite/; revision=558168
windows from usually getting focus after every virtual desktop switch.
Thanks for most of the work go to Guido Fiala <gfiala@s.netic.de>.
(#33701)
svn path=/trunk/KDE/kdebase/workspace/; revision=514057
svn+ssh://coolo@svn.kde.org/home/kde/branches/work/kde4/kdebase
.
I couldn't resolve one kicker conflict that results from different
development directions, so I rely on Aaron to sort it out - the file
is commited with conflicts
svn path=/trunk/KDE/kdebase/kwin/; revision=439627
This fixes comment #10 in 96602, I don't know if it fixes as a whole,
but I'm quite sure people will complain again if not.
BUG: 96602
svn path=/trunk/KDE/kdebase/kwin/; revision=423512
it manually all the time using setGeometry( geometry()).
Needed for getting geometry of the damn shaded windows right
finally.
svn path=/trunk/KDE/kdebase/kwin/; revision=423506
to also set some things only temporarily. E.g. in order
to set skiptaskbar flag on a window, it's just
Alt+F3/Advanced/Special Window Settings/Preferences ->
Apply Now for Skip taskbar, and turn on the checkbox.
svn path=/trunk/KDE/kdebase/kwin/; revision=423112
People who use hidden Kicker, have their taskbar configured to show
only windows on the current desktop or similar now may configure
it so that windows that didn't get focus because of focus stealing
prevention now can not only have their taskbar entry marked
but there can be e.g. also a passive popup.
svn path=/trunk/KDE/kdebase/kwin/; revision=419727
in window-specific settings, no longer make skiptaskbar also
imply some kind of skiping focus.
BUG: 105809
svn path=/trunk/KDE/kdebase/kwin/; revision=415713
feature to KWin. There shouldn't hopefully be any visible user
difference other than fixed bugs.
BUG: 78109
BUG: 99524
svn path=/trunk/KDE/kdebase/kwin/; revision=413066
type means anyway, let's simply consider it to be a legacy way of saying "noborder"
and nothing more.
svn path=/trunk/KDE/kdebase/kwin/; revision=412372
returns the state set by the user - these two may differ e.g. while hover-unshaded.
Therefore titlebar buttons should use isSetShade(), otherwise they become
a bit useless with hover-unshading.
Also fix updating the button state - the styles duplicate way too much code,
and if one of them has a bug, most of them definitely have it as well. Some
of the code should probably move to the decoration lib :-/ .
svn path=/trunk/kdebase/kwin/; revision=366147
Initial work on kwin rules, i.e. #36377 , per window specific settings.
So far only desktop/above/below work, no GUI, and settings from the old
'Save window settings' are ignored for now.
svn path=/trunk/kdebase/kwin/; revision=315446
workaround, don't make their user timestamp newer than the active window's
one (unless a real user activity takes place in them).
As they are belong to the active application and just fail to say so,
this makes sure they won't prevent that application from getting focus
by having newer timestamp. E.g. Alt+F2, typing URL, kio_uiserver dialog
shows (has workaround), SSL certificate dialog shows (shown by kdesktop),
and it wouldn't get focus, because kio_uiserver's timestamp would be later.
svn path=/trunk/kdebase/kwin/; revision=298357
reportedly improves move/resize performance on some systems
for some reason which I fail to see, but oh well.
(http://lists.kde.org/?t=107302193400001&r=1&w=2)
svn path=/trunk/kdebase/kwin/; revision=293755
on the whole group, so that the possible 'close?' dialog has a recent
timestamp even if the window about to be closed wasn't active.
svn path=/trunk/kdebase/kwin/; revision=291859
Qt3.3 capitalizes it (part of my own patch IIRC, hehe :-/), so all
the workarounds for specific apps no longer work -> force resource class
to be always lowercase.
svn path=/trunk/kdebase/kwin/; revision=290521
stacking order for Qt-3.2.x fullscreen windows not patched to use
NETWM fullscreens. Tested by Laurent Montel.
svn path=/trunk/kdebase/kwin/; revision=281817
because if one timestamp is reused for activating window A and then
immediatelly window B, and A will want to set focus to one
of its subwindows after receiving WM_TAKE_FOCUS, and will lag a bit,
it will actually set the focus after B, and will win. Fixes#71704.
If somebody still gets the warning, I'd be interested in the backtrace.
svn path=/trunk/kdebase/kwin/; revision=278208
set, it remembers the contents of the unmapped client window, therefore
the ugly effect actually stayed.
svn path=/trunk/kdebase/kwin/; revision=273891
