Commit graph

1164 commits

Author SHA1 Message Date
Martin Flöser
9a965405e3 Support updating deco for changes of borderless maximize windows config
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
2017-11-14 17:51:54 +01:00
Fabian Vogt
320602ae14 Merge branch 'Plasma/5.11' 2017-11-11 19:29:01 +01:00
Fabian Vogt
267fa23e58 Merge branch 'Plasma/5.8' into Plasma/5.11 2017-11-11 19:25:40 +01:00
Fabian Vogt
73f5b09e3b Remove unnecessary QString::arg call
Summary: Fixes 'QString::arg: Argument missing: "---------\n" , 0'

Test Plan: Didn't test this at all.

Reviewers: #plasma, graesslin

Subscribers: kwin, plasma-devel, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8764
2017-11-11 19:03:47 +01:00
David Edmundson
92e5db1ffe Debug output for platforms
Summary: Mostly so DRM can report if it has AMS or not

Test Plan:
Ran on my DRM setup, printed debug.
Spawned nested compositor, printed debug on that

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8702
2017-11-07 19:12:51 +00:00
David Edmundson
b806915d5d Print screen scale in supportInformation
Test Plan: Printed support info.

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8703
2017-11-07 19:12:40 +00:00
Martin Flöser
018afd092a Guard X11 access in supportInformation
Caused crash when running KWin without X11 support.
2017-11-01 15:09:40 +01:00
Martin Flöser
c2d4cb8846 Support initial minimize rule in ShellClient
Summary: Honors the rules for minimizing a window on initial show.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8182
2017-10-19 18:00:42 +02:00
Martin Flöser
1e7b4fbc8a Merge branch 'Plasma/5.11' 2017-10-15 16:40:03 +02:00
Martin Flöser
1b01f1b300 Update pointer position whenever a window gets (un)minimized
Summary:
This fixes the following problem:
1. Have two windows maximized
2. Click minimize button on first window
3. Click minimize button on second window

What happened:
Second click was ignored as the pointer was not updated.

BUG: 378704
FIXED-IN: 5.11

Test Plan:
Nested KWin/Wayland, added two maximized windows, minimized
both without moving the mouse

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8145
2017-10-15 16:38:45 +02:00
Martin Flöser
35bcc9fc35 Port RuleBook::discardUsed from Client to AbstractClient
Summary: Prepares the Rules update on reconfigure for Wayland windows.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8094
2017-10-07 08:07:24 +02:00
Martin Flöser
f988a5f654 Reload VirtualDesktop settings after passing RootInfo on VirtualDesktopManager
Summary:
The load method and updateLayout ensure the virtual desktop information
is synced to RootInfo and thus to other X11 applications. Thus we need
to call it again when initing X11.

BUG: 385260

Test Plan: Not tested as I'm on Wayland, but given the changes it's obvious.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8086
2017-10-01 21:56:39 +02:00
Martin Flöser
252980390d Merge branch 'Plasma/5.11' 2017-10-01 15:26:40 +02:00
Martin Flöser
0d96e60b79 Also send Wayland clients to a new desktop if their desktop was removed
Summary:
So far the method only operated on X11 clients. So when the last desktop
got removed Wayland clients were still on it. As the auto test showed:
this results in a crash.

Credits go to code coverage as it showed that area as red, which made me
look on it and realize this must be broken.

Test Plan: New test case added

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8082
2017-10-01 11:04:05 +02:00
Martin Flöser
793eecc826 Fix compile warnings after removing ObscurringWindows 2017-10-01 09:51:09 +02:00
Martin Flöser
a74f8766c3 Drop OperationModeX11AndWayland and introduce OperationModeWaylandOnly instead
The operation mode X11 and Wayland is no longer supported and probably
hasn't been supported for the last few years. But now there is the
possibility to run Wayland only, so introduce this as a dedicated new
OperationMode.
2017-09-30 15:09:06 +02:00
Martin Flöser
0c8c047d78 Don't crash on tear-down of Workspace if run without X11 support
Much easier than expected.
2017-09-30 13:31:14 +02:00
Martin Flöser
5cbd28f9a0 Move X11 specific Workspace initialization code into dedicated method
Summary:
This is required to start KWin/Wayland without XWayland support or
delayed XWayland support.

Test Plan: Run kwin_x11 in a nested Xephyr

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7897
2017-09-30 13:03:52 +02:00
Martin Flöser
ec7fe44190 Make xstacking order dirty handling work without X11
Summary:
The xStackingOrder unlike indicated by it's name is relevant for both
X11 and Wayland and contains the stacking order of the windows used for
compositing.

So far it was determined whether it needs to be recreated based on
whether an xcb query is pending. This change introduces a boolean
variable to check whether the stacking order is dirty and guards the X11
specific code to only be run if we have an X11 connection.

This is to my current knowledge the last remaining issue where X11 was
used during the normal Wayland operation mode. Now it should be possible
to re-order the Workspace startup [1] and try to run kwin_wayland without
Wayland support.

[1] Workspace::Workspace and Workspace::init is still highly X11
specific and needs to be split into X11 only and general parts.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7856
2017-09-30 12:59:20 +02:00
Martin Flöser
38ce05eaff Drop the ObscurringWindow functionality on desktop switching
Summary:
The ObscurringWindows are a hack to make it more unlikely that the
desktop wallpaper becomes visible while switching desktops. This was
introduced in 2001 with SVN revision 90111
(git d194f74314).

In 2001 desktop switching was probably a costly action where it was not
possible to just reorder the desktop in one frame. Nowadays we use
mostly compositing and with compositing the ObscurringWindows are
already disabled. But even in the case that no compositing is used I
consider it as very unlikely that the desktop becomes visible during the
switching. Given that I think it's time to remove this legacy solution.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7965
2017-09-27 17:17:03 +02:00
Martin Flöser
42fd77b836 Drop unused method Workspace::waitForCompositingSetup
Seems to have been used in old compositing kcm, documented as DBus API.
But Workspace doesn't expose a DBus interface anymore and our new DBus
interface does not call this method -> it is dead.
2017-09-24 10:28:47 +02:00
Martin Flöser
4cef894e87 Drop delegating Workspace::slotToggleCompositing
Instead connect global shortcut directly to method in Compositor.
2017-09-24 10:15:13 +02:00
Martin Flöser
e6ca321317 Drop ENABLE_TRANSIENCY_CHECK related code as it doesn't compile
Summary:
The code ifdefed by ENABLE_TRANSIENCY_CHECK does no longer compile and
has not compiled since the switch to Qt 5 and KF5 as it still uses
kDebug and (worse) kDBacktrace. There are several other changes which
broke the code and I failed trying to get it to compile again. It's a
classic example of bitrot happening to code which is never getting
compiled.

As this has not been in a state which could compile for at least several
years, I think it's best to completely remove it.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7958
2017-09-24 08:17:30 +02:00
Martin Flöser
551a6246a8 Move XRenderUtils init/cleanup into X11 standalone platform
Summary:
Only needed for kwin_x11 variant (required for the non-composited
Outline). As that's nowadays in the x11 platform, we can move the
complete XRenderUtils support into the platform. Thus KWin core does
no longer require to link it.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7760
2017-09-22 15:20:55 +02:00
Martin Flöser
bd5f5e0915 Move X11 movingClient handling into a dedicated X11EventFilter
Summary:
Splits out the X11 specific window movement handling so that it's not
used in the Wayland case at runtime. As a nice side effect it
un-spaghetties the X11 event handler.

Test Plan:
Run nested KWin on Xephyr and nested KWin/Wayland to verify
that move/resize of X11 windows is still working

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7374
2017-09-01 16:57:43 +02:00
Martin Flöser
778b7d037f Forward showing desktop only to rootInfo if it changed
Summary:
There was a property change for whenever a window gets activated although
that doesn't change the state.

In addition a nullptr check for rootInfo is added for the future no
XWayland case.

Test Plan:
run xev -root to verify the property does not get updated
needlessly

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7097
2017-08-19 19:36:20 +02:00
Martin Flöser
36a3189863 Create a dedicated X11EventFilter for recognizing first user interaction
Summary:
Workspace monitors the X11 events to detect when the user first
interacts with the system. This is only required on X11 for activating
the same client from previous session. So far this was spread over many
parts in the long event switch statement. To make this more contained a
dedicated event filter is introduced which also gets deleted again once
the first user interaction got recognized.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7371
2017-08-19 10:14:53 +02:00
Martin Flöser
8794fe548a Guard every remaining access to rootInfo
Summary:
For a future XFree KWin. Only remaining not guarded usages are in
Workspace::init, but that one needs to be refactored anyway for
becoming X free.

Test Plan: Compiles

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7173
2017-08-07 21:19:04 +02:00
Martin Flöser
c29d6093ba Implement support for window shortcuts for Wayland windows
Summary:
Moves most of the implementation from Client to AbstractClient, so that
it can be used for both Client and ShellClient. Only the X11 specific
code is kept in Client.

Not yet implemented is updating the window caption.

Unfortunately the testing of this feature showed that setting a window
shortcut is not working on Wayland at all (the Qt widget doesn't properly
catch the shortcut). So this feature is currently only of erm theoretical
use.

Test Plan: Added new test case. No testing in real world as explained.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6818
2017-07-25 07:12:42 +02:00
Martin Gräßlin
7eb05552ca Reset most_recently_raised when removing ShellClient
Summary:
This time without a test case that could trigger a crash as the only
reading usage of the variable could luckily not crash.

Reviewers: #plasma, #kwin

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6853
2017-07-23 17:24:28 +02:00
Martin Gräßlin
bd158a6321 Reset last_active_client when a ShellClient is removed
Summary:
The last_active_client is set when an AbstractClient gets activated. For
the X11 case the last_active_client was getting reset to nullptr when
the last_active_client gets destroyed. But for the ShellClient that did
not yet happen. This could result in a crash.

This change addresses the problem and adds a test case which triggered
the crash. The condition of the crash are difficult to generate though -
it took me about an hour to write the test for the crash.

1. Wayland client must be active
2. Explicit focus to null (no active client)
3. destroy Wayland window
4. X11 client which sets focus on itself without interaction with window
  manager

Test Plan: test case no longer crashes

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6852
2017-07-23 16:21:38 +02:00
Martin Flöser
630514d52a Remove roundtrip to XServer from Workspace::xStackingOrder
Introduce a method Workspace::markXStackingOrderAsDirty

Summary:
This method replaces the calls x_stacking_dirty = true in the code base
allowing for further refactoring of that functionality.

Remove roundtrip to XServer from Workspace::xStackingOrder

The method xStackingOrder is only used during a Compositor paint pass.
If the stacking order had changed, the method updated the stacking order
from X by performing a sync XQueryTree. With other words we had a round
trip to the X server directly in the paint pass.

This change rearchitectures this area by making better use of xcb. When
we notice that the stacking order changed and an XQueryTree is needed,
we directly send out the request. When xStackingOrder is finally called,
which normally happens a few milliseconds later, the reply is retreived.
In the worst case it still blocks, but in most cases the roundtrip is
gone.

If the stacking order changed again before accessing xStackingOrder the
running request is cancelled and a new request is issued. So whenever we
get into xStackingOrder it will have the current state.

The updating of the xStackingOrder is moved into a dedicated method and
xStackingOrder invokes it through a const_cast instead of operating on
mutable variables.

Test Plan: Normal system usage, no issues

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6323
2017-07-01 08:21:51 +02:00
Martin Flöser
0d8f11405e Introduce a method Workspace::markXStackingOrderAsDirty
This method replaces the calls x_stacking_dirty = true in the code base
allowing for further refactoring of that functionality.
2017-07-01 08:21:51 +02:00
Martin Flöser
113be5fac8 Restore active client after ending showing desktop
Summary:
Showing desktop requests focus on the desktop window. This means the
active window is reset. When ending showing desktop the state was not
restored.

This change addresses this problem by requesting focus to the best
window.

BUG: 375993
FIXED-IN: 5.10.4

Test Plan: New autotest and manual testing

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6420
2017-07-01 08:20:01 +02:00
Kai Uwe Broulik
93938d60b8 Restore global menu support
This brings back global menu support in KWin.
The DBusMenu infrastructure is different that we just read the DBus service name and
menu object path from the windows rather than passing around window IDs on DBus which
won't work on Wayland.

Differential Revision: https://phabricator.kde.org/D3089
2017-01-11 10:21:03 +01:00
Martin Gräßlin
8d4204ac0d Remove non visible internal windows from the x stacking order
Summary:
KWin always has a few internal windows around which are not visible.
A QWindow created somewhere, but not shown. Such windows should not
be part of the stacking order.

If they are it breaks code which looks at the top most window in the
stacking order like e.g. SlidebackEffect.

This change ensures that the stacking order gets updated whenever a
ShellClient gets hidden and that internal windows with isShown being
false are excluded from the stacking order.

BUG: 364483

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2636
2016-09-09 07:41:12 +02:00
Martin Gräßlin
d3741bd530 Set the restore geometry after placing a ShellClient for the first time
Summary:
The restore geometry gets initially set to 0/0xsize before the placement
is done. When going into updateClientArea and then afterwards into
AbstractClient::checkWorkspacePosition the geometry restory is used for
calculating the new position. This results in windows getting moved to
0/0 when e.g. plugging in a new screen or a panel changes, etc.

This change ensures that the restore geometry is set correctly after the
first placement.

BUG: 366696

Reviewers: #kwin, #plasma_on_wayland, bshah

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2627
2016-08-31 15:12:53 +02:00
Martin Gräßlin
4c0e33a94c Add a Workspace::findToplevel(QWindow*) method
This allows finding the Toplevel for a QWindow which is on Wayland a
ShellClient and on X11 an Unmanaged. This can be used to simplify
code when a Toplevel is needed for an internal QWindow without having
to do platform specific checks.
2016-08-30 15:47:59 +02:00
Martin Gräßlin
2ab8a7b80a Emit Workspace::deletedRemoved for every Deleted still around when terminating Workspace
For the exit-with-session option in kwin_wayland there is a chance that
the window which triggered termination is currently a Deleted. The
Wayland shutdown sequence terminates Workspace before the Compositor
which results in that Deleted's Scene::Window surviving the shutdown
process and thus the Shadow not being removed from the cache. This
makes KWin assert very late in the shutdown process when the decoration
shadow cache gets destroyed.
2016-08-19 09:15:53 +02:00
Martin Gräßlin
14730d1f7c [wayland] Place transient windows every time they are shown
The parent window might have moved, they should always be placed
according to their placement hint.

Reviewed-By: bshah
2016-08-08 14:55:26 +02:00
Martin Gräßlin
981b312323 [Wayland] Make it possible to have internal windows decorated
Summary:
With this change KWin can create window decorations for internal windows.
Thus it's also possible to move internal windows and resize them which is
especially important for the debug console.

Reviewers: #kwin, #plasma_on_wayland, sebas

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2371
2016-08-08 14:00:32 +02:00
Martin Gräßlin
996ee34e14 Remove the unredirect fullscreen windows functionality
Summary:
Rational: unredirect fullscreen windows is a weird beast. It's intended
to make fullscreen windows "faster" by not compositing that screen. But
that doesn't really work as KWin jumps out of that condition pretty
quickly. E.g. whenever a tooltip window is shown. KWin itself has a
better functionality by supporting to block compositing completely.
The complete code was full of hacks around it to try to ensure that
things don't break.

Overall unredirect fullscreen has always been the odd one. We had it
because a compositor needs to have it, but it never got truly integrated.
E.g. effects don't interact with it properly so that some things randomly
work, others don't. Will it trigger the screenedge, probably yes, but
will it show the highlight: properly no.

By removing the functionality we finally acknowledge that this mode is
not maintained and has not been maintained for years and that we do not
intend to support it better in future. Over the years we tried to make
it more and more hidden: it's disabled for Intel GPUs, because it used
to crash KWin. It's marked as an "expert" option, etc.

It's clearly something we tried to hide from the user that it exists.

For Wayland the whole unredirect infrastructure doesn't make sense
either. There is no such thing as "unredirecting". We might make use
of passing buffers directly to the underlying stack, but that will be
done automatically when we know it can be done, not by some magic is
this a window of specific size.

Test Plan:
Compiles, cannot really test as I am an Intel user who never
had that working.

Reviewers: #kwin, #plasma, #vdg

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D2180
2016-08-04 14:48:35 +02:00
Martin Gräßlin
445335ba5f Merge signal connections for AbstractClient in Workspace
Summary:
Have one dedicated method which performs the connection for both
Client and ShellClient. This fixes the desktopPresenceChanged signal
not being passed to the effects.

Note that not all signals are merged. Most signals setup for Client
don't make sense for ShellClient as ShellClient cannot block composite
or unredirect.

Test Plan:
Test case added for ShellClient to ensure that the signal
is correctly invoked on the ShellClient, Workspace and EffectsHandler.

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2059
2016-07-13 10:44:34 +02:00
Martin Gräßlin
4560f8d253 Handle ShellClient::windowShown in Workspace
Summary:
When a ShellClient gets unmapped and mapped again the signal windowShown
gets emitted. We need to handle this in Workspace to ensure the window
is in the proper layer and gets focus.

This fixes applications like KRunner/Yakuake not having focus on a
second show. Unfortunately it also brings back the problem that
notifiations steal focus (this needs to be fixed by passing a proper
window type to a notification).

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D1864
2016-06-16 11:13:59 +02:00
Martin Gräßlin
d49fba5d30 [libkwinxrenderutils] Clean up static blend picture before going down
Summary:
The method xRenderBlendPicture created a static XRenderPicture on
first usage. To cleanup a XRenderPicture an xcb_connection_t* is needed.
As it's static the cleanup happens on exit handler and at that time Qt
already destroyed the xcb_connection_t*. With a certain chance this will
crash.

To expose the problem a Q_ASSERT(qApp) is added in the destructor of
XRenderPicture. Using xrenderBlendPicture() will hit this assert on
application exit. This is demonstrated by the added auto test.

The actual fix to the problem is moving the static variable out of
the method and introduce a global cleanup method just like the init
method. This is now called from Workspace dtor, so before application
goes down.

CCBUG: 363251

Reviewers: #plasma

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D1731
2016-06-13 15:29:07 +02:00
Martin Gräßlin
ea4de85553 Destroy static Client helper window before application goes down
Summary:
Client uses a static Xcb::Window helper. This so far didn't get
explicitly destroyed, so the application finalize cleaned it up.
To destroy the window the xcb_connection_t* is used which the
QGuiApplication already destroyed.

This change ensures that the window gets destroyed before the xcb
connection gets destroyed.

In addition an assert is added to KWin::connection() to ensure that
we still have the QGuiApplication::instance() when it's invoked.
This way we'll notice if we have more cases where we call into xcb
after the application went down.

Reviewers: #plasma

Subscribers: plasma-devel

Projects: #plasma

Differential Revision: https://phabricator.kde.org/D1573
2016-05-17 14:17:07 +02:00
Martin Gräßlin
59e3b96812 Add a Toplevel *Workspace::findInternal(QWindow *w) const
This method is able to match a QWindow created by KWin to a Toplevel.
On X11 by matching winId against Unmanaged, on Wayland by matching
to internal window of ShellClient.

Finding the internal window is a commonly needed feature to e.g.
elevate the TabBox window.
2016-03-04 09:42:33 +01:00
Martin Gräßlin
9c78d28327 Fix Workspace::hasClient(const AbstractClient *c)
Properly find AbstractClient. This makes TabBox activate Wayland clients
on end.
2016-03-04 08:37:56 +01:00
Martin Gräßlin
6b06779a64 Port Workspace::requestDelayFocus to AbstractClient
And also call cancelDelayFocus when removing a ShellClient.
2016-02-18 11:18:50 +01:00
Martin Gräßlin
c044ad98be Split out pointer related handling from InputRedirection
All pointer related code is moved into a new class called
PointerInputRedirection.

The main idea is to simplify the code and make it easier to maintain.
Therefore also a few changes in the setup were performed:
* before init() is called, no processing is performed
* init() is only called on Wayland and after Workspace is created
* init property is set to false once Workspace or WaylandServer is
  destroyed

Thus code can operate on the following assumptions:
* Workspace is valid
* WaylandServer is valid
* ScreenLocker integration is used

The various checks whether there is a waylandServer() and whether
there is a seat are no longer needed.

Some of the checks have been reordered to be faster in the most common
use case of using libinput. E.g. whether warping is supported is first
evaluated by the variable bound to whether we have libinput and only if
that is false the backend is checked.

The new class doesn't have signals but invokes the signals provided
by InputRedirection. I didn't want to add new signals as I consider
them as not needed. The areas in KWin needing those signals should
be ported to InputEventFilters.
2016-02-12 13:38:26 +01:00