Summary:
Qt has its own thing where a type might also have corresponding list
alias, e.g. QObject and QObjectList, QWidget and QWidgetList. I don't
know why Qt does that, maybe for some historical reasons, but what
matters is that we copy this pattern here in KWin. While this pattern
might be useful with some long list types, for example
QList<QWeakPointer<TabBoxClient>> TabBoxClientList
in general, it causes more harm than good. For example, we've got two
new client types, do we need corresponding list typedefs for them? If
no, why do we have ClientList and so on?
Another problem with these typedefs is that you need to include utils.h
header in order to use them. A better way to handle such things is to
just forward declare a client class (if that's possible) and use it
directly with QList or QVector. This way translation units don't get
"bloated" with utils.h stuff for no apparent reason.
So, in order to make code more consistent and easier to follow, this
change drops some of our custom typedefs. Namely ConstClientList,
ClientList, DeletedList, UnmanagedList, ToplevelList, and GroupList.
Test Plan: Compiles.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D24950
Summary:
Compositing in X11 was done time shifted, meaning that we paint first, then
wait one vblank interval length and present on prepareRenderingFrame the
previous paint result. This is supposed to make sure we don't miss the vblank
and in case of block till retrace be able to continue issuing commands and
only shortly before next vblank present.
This is counter-intuitiv, not how we do it on Wayland or even on MESA with X.
The reason seems to be that the GLX backend was in the beginning written
against Nvidia proprietary driver which needed this but nowadays even this
driver defaults to non-blocking behavior on buffer swap.
Therefore remove this legacy anomaly fully and directly present after paint.
We then wait one refresh cycle and in the future can optimize this by delaying
the paint and present till shortly before vsync.
Test Plan: kwin_x11 tested on i915 and Nvidia proprietary driver.
Reviewers: #kwin
Subscribers: zzag, alexeymin, kwin
Tags: #kwin
Maniphest Tasks: T11071
Differential Revision: https://phabricator.kde.org/D23514
Summary:
Currently kwin opens a second ICE connection to ksmserver in order to
tell the state of kwin's whether we're logging out and saving clients or
not.
This requires that kwin launches after ksmserver to have the connection
which is a dependency I want to break.
Practically this code is already ksmserver specific as it relies on some
custom code that sends the first saveState request to kwin first.
Instead we can replace it with a bespoke IPC over DBus and siplify the
code both end. This will allow several other future enhancements that we
want with regards to handling the session state, as well as make an
effort platform agnostic session management, as well as cleaning up some
complex code.
Ksmserver calls into kwin, rather than having kwin watch ksmserver state
to allow us make sure it's race free.
Reviewers: #kwin, zzag
Reviewed By: #kwin, zzag
Subscribers: romangg, zzag, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D24862
Summary:
In order to properly implement xdg_surface.set_window_geometry we need
two kinds of geometry - frame and buffer. The frame geometry specifies
visible bounds of the client on the screen, excluding client-side drop
shadows. The buffer geometry specifies rectangle on the screen that the
attached buffer or x11 pixmap occupies on the screen.
This change renames the geometry property to frameGeometry in order to
reflect the new meaning assigned to it as well to make it easier to
differentiate between frame geometry and buffer geometry in the future.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D24334
Summary:
Currently each managed X11 client is represented with an instance of
Client class, however the name of that class is very generic and the
only reason why it's called that way is because historically kwin
was created as an x11 window manager, so "Client" was a sensible choice.
With introduction of wayland support, things had changed and therefore
Client needs to be renamed to X11Client in order to better reflect what
that class stands for.
Renaming of Client to X11Client was agreed upon during the last KWin
sprint.
Test Plan: Compiles, the test suite is still green.
Reviewers: #kwin, romangg
Reviewed By: #kwin, romangg
Subscribers: romangg, davidedmundson, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D24184
Summary:
Rename ShellClient to XdgShellClient in order to reflect that it
represents only xdg-shell clients.
Test Plan: Compiles, tests still pass.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23589
Summary:
So far wayland was used by internal clients to submit raster buffers
and position themselves on the screen. While we didn't have issues with
submitting raster buffers, there were some problems with positioning
task switchers. Mostly, because we had effectively two paths that may
alter geometry.
A better approach to deal with internal clients is to let our QPA use
kwin core api directly. This way we can eliminate unnecessary roundtrips
as well make geometry handling much easier and comprehensible.
The last missing piece is shadows. Both Plasma::Dialog and Breeze widget
style use platform-specific APIs to set and unset shadows. We need to
add shadows API to KWindowSystem. Even though some internal clients lack
drop-shadows at the moment, I don't consider it to be a blocker. We can
add shadows back later on.
CCBUG: 386304
Reviewers: #kwin, davidedmundson, romangg
Reviewed By: #kwin, romangg
Subscribers: romangg, kwin
Tags: #kwin
Maniphest Tasks: T9600
Differential Revision: https://phabricator.kde.org/D22810
Summary:
Because KWin is a very old project, we use three kinds of null pointer
literals: 0, NULL, and nullptr. Since C++11, it's recommended to use
nullptr keyword.
This change converts all usages of 0 and NULL literal to nullptr. Even
though it breaks git history, we need to do it in order to have consistent
code as well to ease code reviews (it's very tempting for some people to
add unrelated changes to their patches, e.g. converting NULL to nullptr).
Test Plan: Compiles.
Reviewers: #kwin, davidedmundson, romangg
Reviewed By: #kwin, davidedmundson, romangg
Subscribers: romangg, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23618
Summary:
This has been commented out since 2014, I doubt it will come back.
This is a big amount of code, maintenance will be easier without it.
Reviewers: #kwin, zzag
Reviewed By: #kwin, zzag
Subscribers: romangg, graesslin, kwin
Tags: #kwin, #documentation
Differential Revision: https://phabricator.kde.org/D23069
Summary:
Managing lifetime of objects during tear down is a bit clunky in KWin
mostly because the wayland server outlives the workspace.
3f4e733468 tried to tackle one aspect of this problem, but the proposed
solution is good only in short term. If a ShellClient wants to discard
force temporarily rules, it needs to access RuleBook, whose lifetime is
bounded to the workspace, no matter what happens. Otherwise, the force
temporarily rule will be applied again on the next startup.
It's worth to mention that there was another attempt to address this
problem, see commit 826b9742e9. It was reverted because some internal
clients may need to destroy Wayland resources during tear down.
This change takes another approach. In order to ensure that ShellClient
can access RuleBook during tear down, we manually destroy Wayland clients
in destructor of the Workspace class. Something is done already for X11
clients.
Reviewers: #kwin
Subscribers: romangg, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D22986
Summary:
Compositor::hasScene() is redundant. Depending on use case, it can be
replaced by checking either m_state or Compositor::scene().
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23744
Summary: Overlay windows is an X11 thing.
Test Plan: Compiles.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23608
Summary:
Switch to Q_ASSERT in order to make code a bit more consistent. We have
places where both assert and Q_ASSERT are used next to each other. Also,
distributions like Ubuntu don't strip away assert(), let's hope that
things are a bit different with Q_ASSERT.
Test Plan: Compiles.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: romangg, davidedmundson, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23605
Summary:
Any call made to a virtual method in constructor/destructor of a base
class won't go to a derived class because the base class may access
uninitialized or destroyed resources.
For example, let's consider the following two classes
class Base {
public:
Base() { foo()->bar(); }
virtual ~Base() { foo()->bar(); }
virtual Foo* foo() const { return nullptr; }
};
class Derived : public Base {
public:
Derived() : mFoo(new Foo) {}
~Derived() override { delete mFoo; }
Foo* foo() const override { return mFoo; }
private:
Foo* mFoo;
};
When an instance of Derived class is created, constructors will run in
the following order:
Base()
Derived()
It's not safe to dispatch foo() method call to Derived class because
constructor of Derived hasn't initialized yet mFoo.
Same story with destructors, they'll run in the following order:
~Derived()
~Base()
It's not safe to dispatch foo() method call in the destructor of Base
class to Derived class because mFoo was deleted.
So, what does that weird C++ behavior has something to do with KWin? Well,
recently Compositor class was split into two classes - WaylandCompositor,
and X11Compositor. Some functionality from X11 doesn't make sense on
Wayland. Therefore methods that implement that stuff were "purified," i.e.
they became pure virtual methods. Unfortunately, when Compositor tears
down it may call pure virtual methods on itself. Given that those calls
cannot be dispatched to X11Compositor or WaylandCompositor, the only
choice that C++ runtime has is to throw an exception.
The fix for this very delicate problem is very simple - do not call virtual
methods from constructors and the destructor. Avoid doing that if you can!
This change moves Compositor::updateClientCompositeBlocking to X11Compositor
so it longer has to be a virtual method. Also, it kind of doesn't make sense
to keep it in base Compositor class because compositing can be blocked only
on X11.
BUG: 411049
Test Plan: KWin no longer crashes when running kwin_x11 --replace command.
Reviewers: #kwin, romangg
Reviewed By: #kwin, romangg
Subscribers: anthonyfieroni, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D23098
Summary:
This patch is a first take at splitting up of the Compositor class into
Wayland and X11 child classes.
In this first patch we mostly deal with setup and teardown procedures.
A future goal is to further differentiate the compositing part itself too.
Test Plan: Manually X from VT and Wayland nested. Autotests pass.
Reviewers: #kwin
Subscribers: sbergeron, anthonyfieroni, zzag, kwin
Tags: #kwin
Maniphest Tasks: T11071
Differential Revision: https://phabricator.kde.org/D22195
Summary:
So far we were following a bit unique and rare doxygen comment style:
/**
* Contents of the comment.
**/
Doxygen comments with this style look balanced and neat, but many people
that contribute to KWin don't follow this style. Instead, they prefer
more traditional doxygen comment style, i.e.
/**
* Contents of the comment.
*/
Reviewing such changes has been a bit frustrating for me (so selfish!)
and for other contributors.
This change switches doxygen comment style in KWin to a more traditional
style. The main reason for doing this is to make code review process easier
for new contributors as well us.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D22812
Summary: Update tabbox similar to how it's done in KWin/X11.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D21005
Summary:
There is still one small issue that has to be addressed in the future:
xdg-toplevel doesn't have states like MAXIMIZED_VERT or MAXIMIZED_HORZ,
thus Window Rules KCM should display only single maximize rule(not two)
for wayland clients.
Test Plan: The new tests pass.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D19414
Summary:
The compositor tries to switch to the next tabbox client when currently
highlighted client is closed. Though there is a small issue with that.
Because the switch happens too late, a dangling pointer can be inserted
into the unconstrained stacking order, which can lead to a crash later on.
There are two cases:
- compositing is on;
- compositing is off.
Compositing is on: TabBox will try to un-elevate currently highlighted
client, though by that time the client no longer owns EffectWindow, so
this is basically a no-op (that's why we haven't experienced this bug
before).
Compositing is off: TabBox will try to restack currently hightlighted
client under the next tabbox client. Given that the restack method
doesn't do any sanity checks(see Client::manage why), a client that is
about to be destroyed will be re-inserted back into the unconstrained
stacking order.
This change ensures that the switch happens before currently highlighted
client is removed from the stacking order.
BUG: 406784
Test Plan:
- Turn off compositing;
- Follow steps to reproduce in the bug report (see comment 2).
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D20916
Summary:
As a preparation for further changes clean up the Compositor
class. First step is to use the new slot syntax and rename
some of the slots.
Includes some other minor code style improvements to the class
as well.
Test Plan: Manually in X and Wayland nested session.
Reviewers: #kwin, zzag
Reviewed By: #kwin, zzag
Subscribers: davidedmundson, zzag, kwin
Tags: #kwin
Maniphest Tasks: T11071
Differential Revision: https://phabricator.kde.org/D22218
Summary:
Compositing today is ubiquitous. There is no reason to keep compositing
specific functions of Toplevel, Client and Workspace classes in the
composite.cpp source file. Instead let these definitions be separated.
Test Plan: Compiles
Reviewers: #kwin, zzag
Reviewed By: #kwin, zzag
Subscribers: zzag, kwin
Tags: #kwin
Maniphest Tasks: T11071
Differential Revision: https://phabricator.kde.org/D21654
Summary:
The compositor tries to switch to the next tabbox client when currently
highlighted client is closed. Though there is a small issue with that.
Because the switch happens too late, a dangling pointer can be inserted
into the unconstrained stacking order, which can lead to a crash later on.
There are two cases:
- compositing is on;
- compositing is off.
Compositing is on: TabBox will try to un-elevate currently highlighted
client, though by that time the client no longer owns EffectWindow, so
this is basically a no-op (that's why we haven't experienced this bug
before).
Compositing is off: TabBox will try to restack currently hightlighted
client under the next tabbox client. Given that the restack method
doesn't do any sanity checks(see Client::manage why), a client that is
about to be destroyed will be re-inserted back into the unconstrained
stacking order.
This change ensures that the switch happens before currently highlighted
client is removed from the stacking order.
BUG: 406784
Test Plan:
- Turn off compositing;
- Follow steps to reproduce in the bug report (see comment 2).
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D20916
This reverts commit 1e2a0028c3.
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.
CCBUG: 406101
Summary:
This is the initial implementation of a DRM backend based on the EGLDevice,
EGLOutput, and EGLStream extensions, supporting NVIDIA graphics hardware using
their proprietary driver. The new backend will be used if the environment
variable KWIN_DRM_USE_EGL_STREAMS is set. On initialization, it will attempt to
create an EGLDevice based on the DRM device currently in use and create
EGLOutputs and EGLStreams for any attached displays. These are used to control
presentation of the final composited frame. Additionally, it will register the
wl_eglstream_controller Wayland interface so that native EGL windows created by
clients can be attached to an EGLStream allowing buffer contents to be shared
with the compositor as a GL texture.
At this time there are two known bugs in the NVIDIA driver's EGL implementation
affecting desktop functionality. The first can result in tooltip windows drawn
by plasmashell to contain incorrect contents. The second prevents KWayland from
being able to query the format of EGLStream-backed buffers which interferes
with the blur effect. Fixes for both of these are currently in development and
should appear in an upcoming NVIDIA driver release.
Additionally, hardware cursors are currently not supported with this backend.
Enabling them causes the desktop to intermittently hang for several seconds.
This is also likely a bug in the NVIDIA DRM-KMS implementation but the root
cause is still under investigation.
Test Plan:
On a system with an NVIDIA graphics card running a recent release of their
proprietary driver
* Ensure the nvidia_drm kernel module is loaded with the option "modeset=1"
("# cat /sys/module/nvidia_drm/parameters/modeset" should print "Y")
* Ensure EGL external platform support is installed
https://github.com/NVIDIA/eglexternalplatform
* Ensure KWin was build with the CMake option
KWIN_BUILD_EGL_STREAM_BACKEND=ON (this is the default)
* Start a plasma wayland session with the environment variable
KWIN_DRM_USE_EGL_STREAMS set
* Ensure output from KWin OpenGL initialization indicates the NVIDIA EGL
driver is in use (as opposed to Mesa / llvmpipe).
* Desktop should be fully functional and perform smoothly.
Reviewers: #kwin, romangg, davidedmundson
Reviewed By: #kwin, romangg, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D18570
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.
BUG: 406101
Reviewers: #kwin, graesslin
Reviewed By: #kwin, graesslin
Subscribers: graesslin, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D20153
Summary:
VirtualDesktopManager is initialized in two places: Workspace::init and
Workspace::initWithX11. The former method loads virtual desktops from
the config file and the latter method synchronizes VirtualDesktopManager
with RootInfo.
Both methods do
if (!VirtualDesktopManager::self()->setCurrent(m_initialDesktop))
VirtualDesktopManager::self()->setCurrent(1);
which makes sense in Workspace::init, but not in Workspace::initWithX11.
When Workspace::initWithX11 is called, the current virtual desktop is
the same as m_initialDesktop. So that piece of code basically makes
the first virtual desktop current no matter what.
BUG: 390295
FIXED-IN: 5.15.3
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D19520
Summary:
VirtualDesktopManager is initialized in two places: Workspace::init and
Workspace::initWithX11. The former method loads virtual desktops from
the config file and the latter method synchronizes VirtualDesktopManager
with RootInfo.
Both methods do
if (!VirtualDesktopManager::self()->setCurrent(m_initialDesktop))
VirtualDesktopManager::self()->setCurrent(1);
which makes sense in Workspace::init, but not in Workspace::initWithX11.
When Workspace::initWithX11 is called, the current virtual desktop is
the same as m_initialDesktop. So that piece of code basically makes
the first virtual desktop current no matter what.
BUG: 390295
FIXED-IN: 5.15.3
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D19520
Summary:
We have a mix of different doxygen comment styles, e.g.
/*!
Foo bar.
*/
/**
* Foo bar.
*/
/** Foo bar.
*/
/**
* Foo bar.
*/
/**
* Foo bar.
**/
To make the code more consistent, this change updates the style of all
doxygen comments to the last one.
Test Plan: Compiles.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D18683
Summary:
The default implementations just return false/nullptr. The advantage of
having this in AbstractClient is that we can reduce the needed casts
from AbstractClient to Client in core as can be seen in this change.
There are more cases which can be improved thanks to this refactoring
which will follow in dedicated commits.
Test Plan: ctest passes
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D17890
Summary:
Currently, if a virtual desktop was removed, then we'll try to send all
clients to the last virtual desktop even though most of those clients
weren't present on the removed virtual desktop.
Test Plan: Manually.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D17576
Summary:
This change removes a small difference between X11 and Wayland clients.
It ensures that all transients are sent to the same desktop as the main
window. A similar check is already in AbstractClient::setDesktop, so in
general it already worked. This is just a special case for
sendClientToDesktop which supports sending to the same desktop so that
all transients are sent to that desktop.
Test Plan: New test case which fails without this change
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D17546
Summary:
Currently, there is a guarantee that a client, which is about to be removed,
is no longer in the stacking order(both in constrained and unconstrained)
when Workspace::removeClient is called. However, because the client gets
removed from m_allClients after clientRemoved is emitted, it can be
re-inserted back into the stacking order.
In general, the pattern is to do some work and then notify others about
what you've done by emitting a signal. In the case of Workspace::removeClient,
we emit clientRemoved way before the client actually gets removed.
CCBUG: 392412
CCBUG: 400854
Test Plan:
* Enable the following script:
```lang=js
workspace.clientAdded.connect(function (client) {
if (client.skipTaskbar || client.modal || client.transient) {
return;
}
workspace.desktops = workspace.desktops + 1;
workspace.currentDesktop = workspace.desktops;
client.desktop = workspace.currentDesktop;
});
workspace.clientRemoved.connect(function (client) {
if (client.skipTaskbar || client.modal || client.transient) {
return;
}
workspace.desktops = workspace.desktops - 1;
});
```
* Open an app, close the app.
Reviewers: #kwin, graesslin
Reviewed By: #kwin, graesslin
Subscribers: graesslin, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D17069
Summary:
implement virtual desktop support for Wayland.
use the new virtual desktop protocol from D12820
The VirtualDesktopManager class needed some big change in order
to accomodate it, which is where most changes are.
Other than that, it's mostly connections to wire up
VirtualDesktopsManager and VirtualDesktopsManagement(the wayland protocol impl)
Depends on D12820
Other notable detail, is the client visibility updated to reflect the presence
of the client in the plasmavirtualdesktop.
(and the unSetDesktop concept)
Test Plan: used a bit a plasma session together with D12820, D13748 and D13746
Reviewers: #plasma, #kwin, graesslin, davidedmundson
Reviewed By: #plasma, #kwin, davidedmundson
Subscribers: hein, zzag, davidedmundson, kwin
Tags: #kwin
Maniphest Tasks: T4457
Differential Revision: https://phabricator.kde.org/D13887
Summary:
Seems to have regressed in Plasma 5.12 due to code reordering. Now the
property is explicitly updated once the NETRootInfo is created.
BUG: 391034
FIXED-IN: 5.12.5
Test Plan:
Test case exposing the problem added. Fails without the patch,
succeeds with the patch.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #plasma
Differential Revision: https://phabricator.kde.org/D10836
Summary:
The main reason for not having it as a mandatory dependency was that BSD
doesn't support it. But as I learned recently it is available on our CI
system. So BSDs have support now.
Even more it showed that the code doesn't compile if the dependency is
missing. And there's one thing I hate: broken build configuration
options.
So let's make UDEV and libinput a required dependency and get rid of the
problems.
Test Plan: Compiles
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #plasma
Differential Revision: https://phabricator.kde.org/D10057
Summary: So far only updated the Clients, now also ShellClient.
Reviewers: #kwin, #plasma
Subscribers: plasma-devel, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D8095
Vlad Zahorodnii
Roman Gilg
David Edmundson
Frederik Gladhorn
Erik Kurzinger
Volker Krause
Martin Flöser
Laurent Montel
Fabian Vogt