Summary:
A fullscreen ShellClient still had a decoration which was caused by
a combination of several bugs:
* when going to/from fullscreen the decoration was not update
* noBorder did not return true for a fullscreen window
* wl_shell emits fullscreen changed and maximized changed
Comparing to X11 Client both is done. So ShellClient needs to do the
same. This ensures that the correct geometry is requested when going
to fullscreen.
BUG: 366764
Reviewers: #kwin, #plasma_on_wayland, bshah
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2751
Summary:
When triggering global shortcuts we are more interested in the hold
keys than the currently active modifiers. E.g. capslock should not
be seen as "shift is hold". Similar we need to remove consumed
modifiers. Shift+5 is % and not Shift+% - the shift modifier is
consumed and needs to be removed from shortcut evaluation.
To support this we need to have the actual state directly from
xkbcommon. Thus a new method is added which exposes the modifiers
relevant for global shortcut matching. In addition on every key press
all consumed modifiers are calculated and kept so that they can be
used for shortcut matching.
In addition a workaround is added for Backtab. Similar workaround
exists in kglobalaccel for X11. The problem is that our shortcuts are
stored incorrectly: Shift+Tab instead of Backtab. Thus a mapping back
is required. To make everything worse KWin registers the wrong key
sequence "Alt+Shift+Backtab" which doesn't make any sense and is
broken on X11 at least.
The workaround supports both special cases. The one for Backtab should
be turned into Shift+Tab and also KWin's special case of adding shift
to backtab.
CCBUG: 368581
Reviewers: #kwin, #plasma_on_wayland, bshah
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2768
Summary:
The call to update the layer was performed before adjusting to
fullscreen. Thus the layer didn't get updated at all as it still
evaluated to "not fullscreen".
Reviewers: #kwin, #plasma_on_wayland, bshah
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2758
New test case to verify that global shortcut triggering works correctly.
First test case is to verify that consumed modifiers do not break the
shortcut. E.g. a shortcut registered for % should trigger on Shift+5 on
us layout. For that the modifier needs to be consumed, otherwise it's
Shift+% and doesn't trigger. As the test shows this is currently the
case.
Each test needs a dedicated dbus session as the test needs to register
services (e.g. kglobalaccel) and might fail if that cannot be registered.
Due to the wrapping in another command the test need to make sure that
any process they start terminates before them. E.g. the activities test
must stop kactivitymanagerd in cleanupTestCase, otherwise the test times
out.
Dedicated test methods for Alt+Tab and Alt+Shift+Tab. Both open three
windows and simulate one press with opening the TabBox. Alt+Tab should
move to the previous window in the chain, Alt+Shift+tab to the last
window in the chain.
Summary:
We used to have a toLower when reading the rule. This was removed with
4f7edb8 which turned it into a case sensitive matching to fix a
regression.
But this created another regression: existing rules written lower case
are no longer matched.
This change makes the role matching case insensitive again.
BUG: 367554
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2574
In addition to normal client to fullscreen two more cases are added
which also go from a server side decorated window to fullscreen.
This highlights an issue that an incorrect geometry is requested.
CCBUG: 366764
Summary:
In order to add more tabs which can further help monitoring how KWin
handles some aspects the DebugConsole is changed to not take keyboard
input. This means it can only be navigated using pointer device or touch
screen.
This is needed for adding a new tab to monitor clipboard changes. On
Wayland sometimes windows don't get the clipboard, so it would be
helpful to have a debug monitor to see when the clipboard changes. But
for that debug console window may not take keyboard events.
To support this DebugConsole sets the WA_ShowWithoutActivating attribute
which gets honored by the InternalWindowEventFilter and does not forward
key events to such windows.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2620
Summary:
A not shown window may accept focus (e.g. when minimized). Given that
the condition was wrong and broke when making minimized windows not
shown.
This change takes the idea of not passing focus to a closing or unmapped
window directly into acceptsFocus. Which also means that this condition
now works for xdg_shell windows.
BUG: 368673
Reviewers: #kwin, #plasma_on_wayland, bshah
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2745
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
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
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.
This adds a new test case which maps an OSD window and verifies that it's
positioned correctly. Then an additional screen is added which should not
affect the position, but as the test case shows: it does affect the
position.
CCBUG: 366696
The properties:
* maximizable
* moveable
* moveableAcrossScreens
* resizeable
Were only defined on Client instead of AbstractClient. This resulted
in the EffectWindow having those properties evaluate always to false
for a ShellClient and breaking some effects.
BUG: 355947
New test infrastructure which supports testing window rules at runtime.
Test exposes problem of window rules not able to match window roles in
a case insensitive manner.
CCBUG: 367554
Summary:
For Xwayland windows we observed that passing pointer focus to another
window does not trigger proper leave events on X. Which results in e.g.
tooltip windows to show after the pointer moved to a completely
different position on a completely different surface.
This is a bug in Xwayland which will be fixed in 1.19 (already fixed in
master). Given that there is a runtime version check. Although it's fixed
in Xwayland master it's worth to carry a workaround.
To circumvent this problem KWin warps the xcb pointer to 0/0 whever an
X window loses pointer focus. That way the X window gets a proper leave
through the X protocol.
This created a problem though: when giving focus back to the X window it
started to warp the pointer for maximized windows as KWin got pointer
motion events through the X11 event filter for positions on the window
decoration. These are passed into the screen edge filter which pushes
the pointer back and warps our Wayland pointer. To solve this problem
KWin no longer performs any actions for pointer motion in the X11 event
filter if not on X11. The event filter needs to be reworked and most of
it should be moved into the Platform API, if possible.
Test Plan:
Reproduced situations where one could see that pointer updates
don't trigger leave. E.g. going from a highlighted window to the decoration.
Reviewers: #kwin, #plasma_on_wayland, bshah
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2531
Summary:
This change introduces a Scripting::findScript method which returns
the AbstractScript. Thus a test can load a script, retrieve it and
trigger run on it. As the test would also need to know when finally
the test is running a signal is introduced to notify about it.
This makes the scripting ScreenEdgeTest way more reliable. The test
had been failing on both build.kde.org and build.neon.kde.org due to
not knowing when the script is loaded.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2497
Summary:
If caps lock is on the shift key should not trigger. Similar pressing
caps lock should neither on activation press nor on deactivation press
trigger the shortcut. Related to that are latched modifiers aka sticky
modifiers: if the modifier is still on after releasing the key the
shortcut should not trigger. We must assume the user wanted to use the
modifier to activate the modifier, not to activate the shortcut.
This change ensures that we don't track for modifier only shortcuts if
a modifier is active before press or after release.
The added test case demonstrates for caps lock, latched modifiers is
currently still untested. (Needs a way to mock it).
Test Plan: See test case for caps lock.
Reviewers: #kwin, #plasma
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2467
Summary:
The Xkb class loads keyboard layouts from the users configuration. This
makes tests fail locally if the user has a layout which behaves
differently to the one the test expects. E.g. on a German layout the
right alt key is different to the one of US layout.
In order to have a more stable test base the env variable
KWIN_XKB_DEFAULT_KEYMAP forces the loading of the default keymap, thus
tests have a common layout set.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2466
Creating a dedicated method for the leave event on client.
This restructuring of the test should hopefully work around the
failing test condition on build.kde.org.
If the screen is locked the modifier only shortcuts should not trigger.
Also if the screen gets locked while a modifier is hold the shortcuts
should not trigger.
Reviewed-By: bshah
This extends the test helper for locking the screen and unlocking the
screen to also wait for the ScreenLockerWatcher to have that state.
This is going to fail on build.kde.org as we don't have EGL there and
the greeter crashes. This needs an extension to fake that we have a
screen lock window.
Summary:
So far when KWin intercepted a key event a leave was not sent to the
Wayland surface currently having keyboard focus. This could result in
the Wayland application to start repeating keys. E.g.
1. application gets key press event
2. This triggers an internal window to show
3. key release goes to KWin internal window
4. application starts to repeat key as there is no release
With this change whenever KWin intercepts the key event e.g. due to
* internal window
* Effects grabbing key event
* Tabbox
the focused keyboard surface is set to null, thus triggering a leave
event and the client not starting to repeat the event.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2402
Summary:
A new method to tell the effects system whether the compositor scene
is able to drive animations. E.g. on software emulation (llvmpipe) it's
better to not do any animations at all.
This information can be used by effects to adjust their behavior, e.g.
PresentWindows could skip transitions or effects can use it in their
supported check to completely disable themselves.
As a first step all scripted effects are considered to be unsupported
if animations are not supported. They inherit AnimationEffect and are
all about driving animations.
The information whether animations are supported comes from the Scene.
It's implemented in the following way:
* XRender: animations are always supported
* QPainter: animations are never supported
* OpenGL: animations are supported, except for software emulation
In addition - for easier testing - there is a new env variable
KWIN_EFFECTS_FORCE_ANIMATIONS to overwrite the selection.
Reviewers: #kwin, #plasma
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2386
Summary:
We need to call Workspace::clientHidden when minimizing. Otherwise
Workspace doesn't update the active client and the now minimized
window is still active.
BUG: 366634
Test Plan:
Test case works now and also tested in nested setup that
active window changes.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2410
Summary:
If the user clicked a pointer button or scrolled a pointer axis the
held modifier was most likely intended to modify the pointer event.
Thus the modifier only shortcut should not be triggered.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2435
If a pointer axis is scrolled while a modifier is hold, the modifier only
shortcuts should not trigger. The user wanted to use the modifier for the
pointer axis.
This is not implemented yet, thus all is QEXPECT_FAIL.
If a pointer button is pressed or gets pressed while a modifier is
hold, the modifier only shortcuts should not trigger. The user wanted
to use the modifier for the pointer button.
This is not implemented yet, thus all is QEXPECT_FAIL.
This test verifies the functionality of modifier only shortcut
activation. The base test case uses a helper object which is exported
to DBus and has a slot which can get triggered.
The test configures the individual modifiers to call that DBus method
when the shortcut is triggered. It simulates pressing the modifier and
verifies the DBus method was invoked or not.
client->isOnActivity("foo") will return true if the client is on no
activities, as that's the equivalent of saying we are on all activities.
In our case we do want to check activities() shows the right thing.
Verifies the condition from D1982 with expected_fail. That is sets
a Client on non existing activities and expects that it should be on
all activities.
Summary:
Plasmashell's desktop windows are RGBA which forces the compositor to
perform blending and render the background. That is absolutely pointless
as there is no window behind the desktop window it could blend to. All it
does is destroying KWin's more optimized code path and forcing additional
rendering which will never be visible (including shader push/pop).
With this change KWin forces desktop windows (both X11 and Wayland) to
be considered as opaque by setting the depth to 24. Thus blending is
disabled and the background is not rendered.
Test Plan:
Verified with apitrace that KWin goes in the opaque rendering
path for desktop windows.
Reviewers: #kwin, #plasma
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2382
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
The test LockScreenTest::testPointerButton and testPointerAxis both
fail on Neon's CI infrastructure. In order to make the test more reliable
the tests first wait for the pointer enter after unlock before simulating
another button press.
So far KWin's pointer surface enter handling was:
1. update fouced surface
2. update the global position
On client side this resulted in:
1. Enter with incorrect coordinates
2. move event to correct coordinate
With QtWayland this results in the case of multiple surfaces in one
application that Qt doesn't properly process the enter event and the
Window never getting pointer focus and not reacting on any pointer
input events.
The root problem is that the KWayland server API is not ideal for
supporting this situation. There is an API call for setting the global
position (which causes a pointer motion for the focused surface) and
an API call to update the focused surface. But a combination for both
is (still) missing.
This change addresses the problem by first unsetting the entered surface,
then updating the global position and afterwards setting the new surface.
Thus the position is correct. While this needs to be made better in
KWayland, this is an urgency bug fix to get the behavior correct and thus
first working around the API deficit and not first extending in KWayland.
Reviewed-By: bshah
Summary:
This fixes a regression introduced with a1afeded6a.
The connections were setup every the windowShown signal got emitted.
This caused effects to get multiple singals and start multiple animations
which then do not get cancelled correctly.
The incorrect behavior was most visible in the translucency effect which
did not cancel the move animation and the window stayed translucent.
BUG: 366081
Test Plan:
New test case which simulates the behavior of the translucency
effect.
Reviewers: #kwin, #plasma, sebas
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2346
A new sub-directory scripting is added in autotests/integration to
gather all test cases related to scripting.
The first added test case verifies the activation of screen edges. For
that it loads a helper script, which reserves an edge based on config.
When the edge is triggered showing desktop is activated.
Summary:
This change ensures that KWin doesn't crash in the QPainter scene if
the compositor gets restarted and if there are Wayland clients.
BUG: 365471
Test Plan:
Test case added to scene qpainter which triggers a restart
of the Compositor with a window being shown. Verifies that rendering
is correct afterwards.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2185
Summary:
KWin needs to support restarting the OpenGL compositor in case of a
graphics reset event.
On Wayland the tricky part is that the applications should not notice
this. Most importantly KWin cannot just destroy the EGLDisplay and create
a new one. But this is how a restart works: the complete compositor gets
torn down and recreated - including the EGLDisplay.
This change moves ownership of the EGLDisplay to the Platform.
The AbstractEglBackend subclasses query the Platform whether there is
already an EGLDisplay. Only if there is no EGLDisplay the EGLDisplay is
created and only if no EGLDisplay is registered with Wayland the bind
is performed.
Another change is regarding the destruction: the AbstractEglDisplay does
no longer unbind the Wayland display and does no longer destroy the
EGLDisplay. The EGLDisplay is destroyed by the Platform - so very late
on application exit. The Wayland display is unbound when the Compositor
terminates.
Test Plan:
Limited testing with the added auto-test. This one needs to
be extended to fully verify that OpenGL applications continue to work.
But this requires build.kde.org to support OpenGL on Wayland.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2202
Summary:
Most platforms like the nested and virtual do not handle the outputs
themselves and WaylandServer announces the Outputs to Wayland.
So far this was static: at startup it got announced once to Wayland
and any changes were not catched.
This change makes WaylandServer listen to changes to the Screens and
sync them to Wayland.
Unfortunately KWin's internal Screen information is not sufficient to
properly synchronize this to Wayland and also Wayland by not supporting
adding/removing modes does not help.
Thus the solution implemented here is to add new outputs reflecting the
changes and then removing the old ones. This creates situations with more
outputs being present than actually there, but prevents that there are
no outputs at all.
Test Plan: Auto test added which verifies this for the virtual platform
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2233
Summary: Needed for e.g. the pager.
Test Plan: Test case for PlasmaWindow verifies the geometry
Reviewers: #kwin, #plasma_on_wayland, hein
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2200
Summary:
With this change auto-hiding panels are animated again by SlidingPopups
effect.
Test Plan: Test case adjusted, and tested in VM
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D2157
BUG: 354407
FIXED-IN: 5.8.0
A test to simulate auto-hiding panels. Preparation step for making the
slidingpopups effect working again for auto-hiding panels.
The test case simulates creating a panel at the screen edge, hides it
through the property and shows it again through the edge.
Summary:
The WaylandServer creates the XdgShellV5 interface and hooks it up
to create a ShellSurface whenever an xdg surface or xdg popup is created.
ShellClient gains some new ctors for the different variants and is
adjusted to delegate to xdg surface respectively.
With this change KWin mostly supports xdg-shell protocol. Still missing
is support for the "geometry" request which is rather difficult to
implement in KWin.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2108
Summary:
This allows effects to animate when a window is shown again and when
a window gets hidden but not yet closed/destroyed. This situation
happens on X11 for e.g. auto hiding panels and on Wayland for pretty
much any window which properly unmaps (windowHidden) prior to destroy.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2084
Summary:
So far when a ShellClient got unmapped ready_for_painting was set to
false. That is the ShellClient was treated in the same way as a not
yet shown window. It was completely excluded from painting, a close
animation impossible.
This change makes use of the functionality available in
Client::hiddenInternal(). The window is considered as hidden, thus
still excluded from e.g. getting input events, but could be rendered
any time as we still have a previous window pixmap (if referenced).
This allows to have it considered in the rendering pass, but effects
still cannot make use of it as that state is not yet exposed to the
effects.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2083
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
Summary:
If KWin fails to start the Wayland server due to XDG_RUNTIME_DIR not
being set, kwin_wayland should terminate with an error condition but
not crash.
This change makes sure that KWin detects that the Wayland server does
not work and terminates the startup early and ensures that it doesn't
crash while going down.
An error message is shown that we could not create the Wayland server.
Test Plan:
Test case added which verifies that WaylandServer fails to
init. Manual testing that kwin_wayland exits with error 1.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2078
The struts test is extended by a setup containing two horizontal
screens, bottom aligned with the left screen smaller than the right.
Thus there is a dead area in the top left corner. In addition there's
a panel on top left screen.
Apparently KWin allowed windows to open in the dead area. The test
case reconstructs this by opening a window with the same size hints,
but in the test it's working correctly.
A few more cases where we need to ensure that the created window is
destroyed before going into next test method.
Interesting observation: the generated window ids are identical.
Possible problem with KWayland::ClientConnection?
New test method which verifies that a newly mapped window is rendered
correctly, that cursor image set on it is rendered correctly, also when
pointer moves.
Summary:
Many tests create a Wayland window, render it and then wait till it's
created in KWin as a ShellClient. To reduce code duplication the test
helper provides helper methods to wait for the next ShellClient to be
shown and to directly render and wait for the window for that to be
shown.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2057
Summary:
A new namespace KWin::Test is added which provides a few helper
functions. It makes it easy to setup a KWayland client connection with
the base set to be able to create a Surface and flags to create
additional interfaces. This replaces the KWayland connection dance in
init() methods. For cleanup() there is also a dedicated helper function.
In addition there are helper functions to:
* render a surface
* create a surface
* create a shell surface
* flush the wayland client connection
* access to the created interfaces - for compatibility with existing code
The idea is to extend this Test library also for other common use cases
like creating an X11 connection and X11 windows, etc.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2053
Summary:
A dedicated cmake function is added to create a test case. It takes
a NAME, the SRCS and additional LIBS.
Thus it's
integrationTest(NAME myTestCase SRCS test.cpp)
to create a standard integration test.
In addition kwin_wayland_test.cpp is compiled into a static library
to decrease the compile time a little bit.
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2052
Summary:
The idea behind this autotest is inspired by bug 356328 which produced
incorrect rendering results. Also it's inspired by openQA which performs
image reference comparisons.
This test case tries to go further. It creates reference images which
must match the rendering result exactly. So far the test case verifies
the start condition - kwin started and one frame is rendered with default
cursor in the middle of the screen. And it verifies the moving of the
cursor without any windows shown. Whenever the cursor moves a repaint
should be triggered and the old and new area should be properly
repainted.
To support this the test needs some minor changes in KWin:
* Scene provides a frameRendered signal - needed for waiting on frame
* Scene and SceneQPainter are exported
* SceneQPainter provides access to it's Backend, so that we get to the
backbuffer
* ScriptedEffectLoader is exported for getting a list of all scripted
effects - (we don't want fade to manipulate the rendering)
Reviewers: #kwin, #plasma_on_wayland
Subscribers: plasma-devel, kwin
Tags: #plasma_on_wayland, #kwin
Differential Revision: https://phabricator.kde.org/D2046
Test was failing on build.kde.org, though passing locally. This change
tries to make the test more robust to timing issues which makes it
hopefully pass on build.kde.org again.
