Commit graph

20386 commits

Author SHA1 Message Date
Roman Gilg
6857fe5477 Add output orientation size helper
Summary:
In order to reduce code duplication add this helper
to AbstractOutput.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16794
2018-11-14 20:05:39 +01:00
Roman Gilg
6295d1e6a2 Move output refresh rate getter into AbstractOutput
Summary:
The current refresh rate is stored in OutputInterface. Move the getter
therefore in the AbstractOutput class.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16793
2018-11-14 20:04:29 +01:00
Roman Gilg
0af57d6366 [drm] Code cleanup in DrmOutput class
Summary: Removes unneeded includes and reorders the code in a sensible way.

Reviewers: #kwin

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16792
2018-11-14 20:03:25 +01:00
Roman Gilg
93f78c2d23 Set outputs enabled in AbstractOutput
Summary:
Nothing hardware specific anymore in setEnabled method,
therefore put it in AbstractOutput.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T10016

Differential Revision: https://phabricator.kde.org/D16790
2018-11-14 20:00:28 +01:00
Roman Gilg
32a9a61889 Abstract OutputDevice initialization
Summary:
Move generic Wayland parts of OutputDevice initialization into
AbstractOutput class.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Maniphest Tasks: T10016

Differential Revision: https://phabricator.kde.org/D16789
2018-11-14 19:59:09 +01:00
Roman Gilg
27946199b6 Abstract output dpms handling
Summary:
Move init and Wayland side changes of dpms modes into
AbstractOutput.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Maniphest Tasks: T10016

Differential Revision: https://phabricator.kde.org/D16787
2018-11-14 19:57:25 +01:00
Roman Gilg
e2b1bcea1b Set mode in AbstractOutput
Summary:
Set the mode in AbstractOutput and call into the plugin
for final change on hardware.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Maniphest Tasks: T10016

Differential Revision: https://phabricator.kde.org/D16786
2018-11-14 19:56:07 +01:00
Roman Gilg
254a807374 Handle Wayland change sets in AbstractOutput
Summary:
Move Wayland change set handling to AbstractOutput and create
virtual functions to call into the hardware implementation

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T10016

Differential Revision: https://phabricator.kde.org/D16785
2018-11-14 19:54:29 +01:00
David Edmundson
f521d4bbe1 [wayland] add enter/leave virtual desktop API
Summary:
As setDesktop was changed to "move" this left unSetDesktop non-symetric.

This replaces it with explicit API to enter/leave.

This also moves new API to the new object based API rather than still
using ints.

Where numbers are used it has been tidied up so that desktop IDs are
uint, which should be used when we have a list of desktops.
int is used only when we have either a desktop ID or NET::OnAllDesktops
(-1)

Effects API cleared up to use this and use a set of x11 IDs, which
avoids any potential complications of handling add and removes any
ambiguity with what happens if you leave all desktops and such.

Test Plan:
testVirtualDesktops passes (with pending kwayland patch)
Moving a window in the desktop grid on X11 behaves
Moving a window in the desktop grid on wayland behaves

Reviewers: #kwin, zzag

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16704
2018-11-14 11:08:46 +00:00
l10n daemon script
e6cf2e3efe SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-14 06:08:44 +01:00
David Edmundson
2fb2fb9a44 [wayland] add explict AbstractClient::setDesktops(QList)
Summary:
Currently setDesktop and unsetDesktop were out of sync, with the latter
missing several important signals and updating of transients.

By using a a shared implementation we avoid that, it also allows for an
atomic move of a window between desktops.

setDesktop is changed back to be a moval of desktop as it currently
broke several unit tests as well as changing the behaviour of the move
to desktop shortcut on wayland.

Test Plan:
testBindings now passes
Moved windows with the context menu on X11

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: graesslin, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16703
2018-11-13 16:07:40 +00:00
Vlad Zagorodniy
7e73ad230a Merge branch 'Plasma/5.14' 2018-11-13 10:28:56 +02:00
Vlad Zagorodniy
406b70b04e [wayland] Don't crash when resizing windows
Summary:
If you resize a decorated client by using the resize user action(press
Alt + F3 > More Actions > Resize), then KWin will crash because it gets
stuck in an infinite loop (AbstractClient::performMoveResize <->
ShellClient::setGeometry).

Here's how KWin gets stuck in that loop:
* when you finish resizing the client, AbstractClient::keyPressEvent
  will call AbstractClient::finishMoveResize;
* the first thing that finishMoveResize does is block geometry updates,
  then it does some clean up (e.g. reset the value of isMoveResize(), etc),
  updates the geometry of the client and when it's done, it will emit
  clientFinishUserMoveResized signal;
* when PointerInputRedirection notices that signal, it will call
  processDecorationMove on the client, which in its turn will indirectly
  call AbstractClient::startMoveResize;
* when it's time to go back to AbstractClient::keyPressEvent, geometry
  updates are unblocked and if there are any pending geometry updates,
  then ShellClient::setGeometry will be called;
* ShellClient::setGeometry will eventually call ShellClient::doSetGeometry;
* ShellClient::doSetGeometry will call AbstractClient::performMoveResize
  because AbstractClient::processDecorationMove indirectly called
  AbstractClient::startMoveResize;
* AbstractClient::performMoveResize calls ShellClient::setGeometry;
* (at this point, KWin got stuck in the infinite loop)

This change swaps setMoveResizePointerButtonDown and finishMoveResize,
so processDecorationMove won't indirectly call startMoveResize.

BUG: 397577
FIXED-IN: 5.14.4

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16846
2018-11-13 10:28:16 +02:00
l10n daemon script
b5a2bb2abf SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-13 06:26:14 +01:00
Vlad Zagorodniy
688d946ffb [libkwineffects] Gracefully release previous window pixmap
Summary:
If the cross fade animation is cancelled, we are not gracefully
unreference the previous window pixmap.

This change addresses that issue by using RAII approach to
reference/unreference the previous window pixmap.

Test Plan: Manually. The Maximize and the Morphing Popups effect still work.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16391
2018-11-12 12:51:08 +02:00
Vlad Zagorodniy
93abb9a273 Don't cache value of popupWindow property in EffectWindow
Summary:
With the plasma shell protocol, a ShellClient gets its role/window type
after it's created, so the cached value of the popupWindow property in
EffectWindow can be wrong.

In addition to that, the value of the popupWindow property still can be
wrong because plasma shell surfaces don't have xdg-popup role, so we need
to check NetWM-based window type in ShellClient::isPopupWindow.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16835
2018-11-12 12:47:55 +02:00
David Edmundson
5da8b4c78a Explicitly link and disable kcrash on kwin_wayland
Summary:
Kwin tried to not use kcrash by not linking against it.

KIO now links against KCrash as we link against KIO we indirectly link
against KCrash and thus now link and launch kcrash on wayland. This
breaks coredump.

Arguably it should be fixed in KIO, but it's non-trivial.

The advantage of this approach is it allows us to enable drkonqi for
nested mode in the future, or make a non-gui drkonqi that just saves
logs.

Test Plan: Compiles

Reviewers: #kwin, romangg

Reviewed By: #kwin, romangg

Subscribers: zzag, romangg, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16834
2018-11-12 09:59:57 +00:00
l10n daemon script
51bf12e629 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-12 08:21:59 +01:00
l10n daemon script
ac96367d75 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-12 07:57:18 +01:00
l10n daemon script
3a75ef844e SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-12 05:53:45 +01:00
Bhushan Shah
e455e34969 effects: attempt to screenshot on OpenGL ES 2.0 instead of failing
Summary:
Current code path was attempting to use both framebuffer blit and
glReadPixels on OpenGL ES, instead change the code to use framebuffer
blit and glGetTexImage on OpenGL and glReadPixels on the OpenGLES as it
doesn't have glGetTexImage available.

Test Plan: tested on Nexus 5X.

Reviewers: #kwin, davidedmundson, graesslin

Reviewed By: #kwin, graesslin

Subscribers: kwin

Tags: #kwin

Maniphest Tasks: T10011

Differential Revision: https://phabricator.kde.org/D16802
2018-11-11 19:03:50 +05:30
Roman Gilg
21aee588af Initialize Wayland output in AbstractOutput
Summary:
Wayland output is on protocol level and not dependent on the hardware
platform. Next steps are to do the same for output device and then let
the virtual output call into these initializing functions as well.

Test Plan: Manually and auto test.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16783
2018-11-09 19:47:23 +01:00
Martin Flöser
c003db22c6 Build KF5IdleTimeKWinWaylandPrivatePlugin in correct directory
Summary: Ensures that we can load the plugin when running only from build dir.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16762
2018-11-09 17:39:29 +01:00
Martin Flöser
e45d3fe5a4 Add a TESTING.md document describing how to run the unit test suite
Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16777
2018-11-09 17:39:01 +01:00
Martin Flöser
9f6b0f98b5 Fix the way how we quit kactivitymanagerd from the unit test
Summary:
Kactivitymanagerd is a libexec executable now so we cannot just execute
it and cannot know it's path. We need to stop it as otherwise ctest does
not terminate the testActivities. This change uses dbus to quit the
kactivitymanagerd.

Test Plan: ctest did not timeout on testActivities

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16780
2018-11-09 17:27:07 +01:00
Martin Flöser
54eb3bf137 Copy the aurorae decoration qml plugin to bin dir in build directory
Summary:
Look there, another plugin I didn't remember. The other qml files are
not needed for the aurorae autotest as it's for the svg based themes
instead of qml themes like Plastik.

Test Plan: Further destroyed my system, test failed, with this change passed.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16761
2018-11-09 09:27:34 +01:00
Martin Flöser
74cdd242a4 Support starting the killer_helper from build dir
Summary:
As with all libexec executables we first need to test whether the binary
is available in the application's directory and start this, otherwise
the system wide installed one.

See: https://community.kde.org/Guidelines_and_HOWTOs/Making_apps_run_uninstalled

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16763
2018-11-09 09:24:50 +01:00
Martin Flöser
97beb72d32 Support starting the rules_dialog from build dir
Summary:
As with all libexec executables we first need to test whether the binary
is available in the application's directory and start this, otherwise
the system wide installed one.

See: https://community.kde.org/Guidelines_and_HOWTOs/Making_apps_run_uninstalled

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16765
2018-11-09 09:24:33 +01:00
Vlad Zagorodniy
bf19c41bc7 [effects/translucency] Use strict mode for the whole script 2018-11-08 14:37:22 +02:00
Vlad Zagorodniy
26e67f61e2 [effects/windowaperture] Use strict mode for the whole script 2018-11-08 14:32:47 +02:00
Vlad Zagorodniy
abf6c6927c [autotests] Fix maximize test
Summary:
testMaximizedPassedToDeco was failing because it didn't handle async
maximization.

testBorderlessMaximizedWindow was failing because setNoBorder can modify
geometry, so we end up with a wrong restore geometry.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16755
2018-11-08 14:10:57 +02:00
Martin Flöser
80d0915cf8 [aurorae] Print qml errors during instantiation of qml based deco
Summary:
So far we didn't know why plastik wasn't loaded. Now we get the error
messages.

Test Plan: Saw error messages while investigating failing KWin test

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16753
2018-11-08 10:38:35 +01:00
Martin Flöser
ee68994419 Build plastik plugin at correct location in build tree
Summary: The tests running Aurorae need to be able to pick up the plastik plugin.

Test Plan: Removed system install of plastik plugin, now test passes

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16752
2018-11-08 09:52:54 +01:00
Martin Flöser
543b6955d4 Add more debug output around starting the x clipboard syncer process
Summary:
Trying to get some more information on why the related test fails on
build.kde.org.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16748
2018-11-08 08:44:43 +01:00
Martin Flöser
c19627b492 Copy plastik window decoration to build directory
Summary:
This ensures that DontCrashAuroraeDestroyDecoTest can load the plastik
window decoration when run from build directory as it happens on
build.kde.org.

Test Plan: Test passes now when manipulating XDG_DATA_DIRS to hide system install

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16745
2018-11-08 08:31:17 +01:00
l10n daemon script
9554017450 SVN_SILENT made messages (.desktop file) - always resolve ours
In case of conflict in i18n, keep the version of the branch "ours"
To resolve a particular conflict, "git checkout --ours path/to/file.desktop"
2018-11-08 06:03:02 +01:00
David Edmundson
47d87cd94f [autotests] Handle async maximisation in quick tiling test
Summary:
KWin now correctly updates the client maximised state when we have a new
buffer in the new state. The quick tile unit test was unfortunately not
updated.

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: graesslin, zzag, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16739
2018-11-08 01:50:51 +00:00
Martin Flöser
0e839c4dda Unset XKB_DEFAULT_* in tests to make tests better reproducable
Summary:
On one of my systems XKB_DEFAULT_LAYOUT is set to "de". This makes a few
tests fail, e.g. pointer input and modifier only shortcuts.

The reason is that those tests assume the xkb default layout behavior,
that is how xkb functions without any layout being set. So having the
env variable around influences the layout generation.

To prevent this the environment variables are unset and thus a
reproducable environment is created.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16737
2018-11-07 20:10:58 +01:00
Martin Flöser
e637d43211 Remove potential endless loop from XClipboardSyncTest
Summary:
We need to wait till the helper process created the datadevice. For this
we used a while loop. On build.kde.org the test gets stuck in this loop
and times out after 10 minutes.

This change introduces a dedicated signal and we just wait for it. So if
something fails we wait only 5 sec instead of endless. This should help
investigate why the test doesn't work on build.kde.org.

Test Plan: Test works locally

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16741
2018-11-07 20:10:32 +01:00
Vlad Zagorodniy
f466307277 [libkwineffects] Use correct type for the desktops property
Summary:
Type of the x11DesktopIds property was changed from QList<int> to
QVector<int> in KWin core, but not in libkwineffects. That resulted in
having effects like slide not working because Qt can't implicitly
convert QVector<int> to QList<int>.

Test Plan: Slide effect works again.

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16743
2018-11-07 21:06:37 +02:00
Vlad Zagorodniy
7b08886e71 Merge branch 'Plasma/5.14' 2018-11-07 19:37:03 +02:00
Vlad Zagorodniy
ad28da84e7 [effects/slidingpopups] Don't crash when sliding virtual desktops
Summary:
If you switch virtual desktops while krunner is sliding in, then
depending on whether your distro strips assert statements away,
KWin can crash.

The reason why it crashes is the sliding popups effect tries to unref
deleted windows that it hasn't referenced before (if there is an active
full screen effect, then popups won't be slided out, which in its turn
means that we won't reference deleted windows). So, in the end, the
refcount of those windows can be -1. That triggers an assert statement
in the destructor of the Deleted class, which checks whether the
refcount is equal to 0.

Popups are not slided while there is an active full screen effect because
we don't know what the full screen effect does.

This patch adjusts the sliding popups effect so it stops all active
animations when user switches virtual desktops or when a full screen
effect kicks in. We need to do that so the effect won't try to
unreference windows in postPaintWindow.

Visually, it doesn't look quite nice, but for now that's good enough.
A proper fix would be more complex: we would need to make sure that
full screen effects ignore sliding popups (and also maybe docks) and
perform some input redirection.

BUG: 400170
FIXED-IN: 5.14.4

Test Plan: I'm not able anymore to reproduce bug 400170.

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: davidedmundson, graesslin, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16731
2018-11-07 19:22:31 +02:00
David Edmundson
d2648c6c77 [wayland] Fix arguments to clientMaximizedStateChanged(bool, bool)
Summary:
It should be indicating the current state of horizontal and vertical
maximisation not whether it changed or not.

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16740
2018-11-07 16:32:56 +00:00
David Edmundson
62d334eb61 [wayland] Move AbstractClient::desktops from QList to QVector
Summary:
Doesn't have any meaningful impact. It's the same performance when T is a pointer,
but it'll bring it consistent with VirtualDesktopManager::desktops

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16736
2018-11-07 16:22:59 +00:00
David Edmundson
c42d160742 [TabBox] Fix Arrow Key / Keyboard Events in QML Alt+Tab Skins
Summary:
KWin used to do a quirky trick to send key events to the topmost QQuickItem
rather than things going to the activeFocus item.

Sending it to the window previously would have failed as the window
didn't think it was active.

Since 66986d4afd we can just let the
window process the events in a normal QtQuick manner.

BUG: 370185
Fixed-in: 5.15.0

It will require tabboxes to set focus correctly.
The ones I tested did.

Most analysis for this patch was done by Chris Holland.

Test Plan:
Held+alt tab with the "Text" tabbox switcher
pressed up and down

Reviewers: #kwin, graesslin

Reviewed By: #kwin, graesslin

Subscribers: graesslin, kwin, Zren

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16693
2018-11-07 16:22:59 +00:00
Martin Flöser
7221864cd2 Start xclipboard sync process from build dir if available
Summary:
The xclipboard sync test times out on build.kde.org as KWin is not
installed prior to running the tests. This is due to KWin not finding
the executable for the clipboard sync helper.

This change looks whether the binary exists in the same directory as
KWin's executable. If it exists it is started instead of the hardcoded
path in libexec.

Test Plan: Run the test and verified the correct binary is loaded

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16732
2018-11-07 15:19:25 +01:00
Martin Flöser
f27f8a267f Fix slidingpopupstest when run without installtion
It tries to load scripted effects, so needs same adjustement.
2018-11-07 10:51:07 +01:00
Martin Flöser
43fc7f1bad Fix FadeTest and TranslucencyTest when started without install
Summary: Search in build dir for the effects.

Reviewers: #kwin

Differential Revision: https://phabricator.kde.org/D16683
2018-11-07 09:34:38 +01:00
Martin Flöser
c36f9d2980 Fix test of scriptedeffectsloader when run from build directory without install
Summary:
On build.kde.org all tests loading scripted effects are failing. This
seems to be because the effects are not installed.

To make this work, this change introduces the following changes:
 * scripted effects are copied to ${build}/bin, like all binaries
 * the test sets XDG_DATA_DIRS env variable to point to ${build}/bin

This change also needs to be added to further tests once this is
accepted. Furthermore it could be considered whether KPackageLoader
should consider the QCoreApplication::applicationDirPath in addition to
the GenericDataLocation. This would make KPackageLoader work much better
in a build tree only setup.

Test Plan: Test passes locally, obviously not tried on build.kde.org

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16682
2018-11-07 09:34:18 +01:00
Martin Flöser
a04b9da61e Re-evaluate the window rules when the window class of a Client changes
Summary:
So far KWin did not re-evaluate the window rules when the Client's
window class changes. Window class is the main (static) feature the rule
selection is based on. For dynamic changing mapping features like caption
KWin does re-evaluate the rules.

The reason for KWin to not evaluate when the class changes is that KWin
expects the class not to change. From ICCCM section 4.1.2.5:

 > This property must be present when the window leaves the Withdrawn
 > state and may be changed only while the window is in the Withdrawn
 > state. Window managers may examine the property only when they start
 > up and when the window leaves the Withdrawn state, but there should be
 > no need for a client to change its state dynamically.

Unfortunately there are prominent applications such as Spotify which
violate this rule and do change the window class dynamically. While this
is a clear ICCCM violation there is nothing which really forbids it (may
not != must not) and nothing which forbids KWin to react on changes.

As also libtaskmanager started to react on it, it makes sense to also
hook up the required bits for window rules. After all KWin detects
changes to the window class for some time already and has the
functionality to evaluate the rules. So all there is, is one connect
which improves the situation for our users, while at the same time it
should be rather risk free. If a setup window rule breaks after this
change it's due to the client not being ICCCM compliant.

Test Plan:
I don't use any of the affected applications, so it's only
tested with the new added unit test.

Reviewers: #kwin

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16670
2018-11-07 09:33:39 +01:00