So far the DrmOutput connected to all input events when going into
power saving. As we now have the input filters it's better to just
install a filter when an output goes into powersave and remove the
input filter again when all outputs are enabled again.
To make this work InputRedirection gains a new method to add a new
filter as the first filter. This is a potentially dangerous method
as it allows to have a filter before LockScreenFilter gets the
events. But in case of DPMS it's something we actually want.
A nice new feature possible with the input filter is that we can
filter out the event which re-enables the outputs. Thus when getting
on a system with output off and screen locked, the first key hit
doesn't go to the lock screen.
Reviewed-By: Bhushan Shah
BUG: 341201
Fixed-in: 5.6.0 (Wayland-only)
Similar to the change regarding pointer and touch a
KeyboardInputRedirection is created. The Xkb class is also moved to
the new files keyboard_input.h and keyboard_input.cpp.
Just like in the case of PointerInputRedirection no signals are added,
but the existing signals in InputRedirection are directly invoked.
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.
So far the area based edges connected directly to global pointer pos
changed in InputRedirection. This didn't allow proper checking whether
the edge was triggered (e.g. missing timestamp).
This change merges the functionality into the new input filter mechanism.
There is now a dedicated input filter for screen edges, installed after
lock screen and before effects. It always passes events on, but also passes
all events through ScreenEdges to handle the activation. As it's installed
after the lock screen filter we don't need to check for screen locked any
more.
The code is now similar strucutured to the existing X11 based variants
and maybe will allow to also merge the X11 variant with the new one.
The logic should not be tied to whether libinput is used. It's relevant
for all Wayland backends whether they use libinput or not.
In addition this should generate a pointer motion event, so that proper
processing can take place and we get proper pointer enter events.
If the pointer is warped the position change should be treated like
a change coming from the input device. Our normal processing should
take place.
A problem in this case is the timestamp to pass to the wayland server.
Normally our timestamps come from the backend/libinput and we don't
know the next one. As an intermediate solution we just use the last
timestamp on the seat. In future a solution could be to not use the
backend's timestamp at all, but have our own timestamp handling.
When the screen gets locked any existing sequence gets cancelled
and the focused touch surface gets reset. While screen is locked
touch events are filtered to only go to lock screen or input methods.
Test case is added for touch event during lock screen.
Reviewed-By: Bhushan Shah
Instead of only making the active client the focused keyboard surface,
the method now also performs the lock screen security restriction.
Also just like udatePointerWindow the method becomes public, so that
it can be used from the LockScreenEventFilter and is connected for
lock state changes. This means as soon as the screen locks the current
focused keyboard surface will get a leave event and get an enter event
once the screen unlocks.
The auto test is adjusted to verify these new conditions.
Reviewed-By: Bhushan Shah
InputRedirection connects to lockStateChanged to udate the current
pointer window. This way we can ensure that the current pointer
surface gets reset as soon as the screen locks (c.f. the expect
fail in the autotest) and also that it restores to the surface under
the mouse once the screen is unlocked.
The relevant code was not yet lock screen aware and performed an
early exit. Part of the code was fine, e.g. findToplevel is lock
screen aware. So this change adjusts the methods for updating the
internal window and decoration to be lock screen aware, that is they
get reset. With that updatePointerWindow is also lock screen aware.
Thus the LockScreenFilter can also use updatePointerWindow just like
the normal handling and does not need to reimplement parts of it. As
it now relies on other code being correct it has an additional check
to verify that the current pointer surface is a surface which is allowed
to get events. If it isn't the events are not forwarded.
Reviewed-By: Bhushan Shah
The main motivation of this change is to remove the spaghetti code
in the input event handling. Each area of processing (e.g. lock screen)
is moved into a dedicated event filter. Processing the events now just
means calling a virtual method on each of the filters. As soon as the
method returns true, the processing is stopped.
This allows to have the security for the lock screen just in one place:
whenever the screen is locked the event filter can ensure that the events
are not further processed.
Currently all event filters are implemented directly in input.cpp and
are registered by InputRedirection itself. In future it would be better
to have those moved to the area they belong to and get registered from
there. E.g. the input filter for EffectsHandlerImpl should be created
by EffectsHandlerImpl. This requires an improved API to ensure that the
filters are installed in the correct sequence.
If the screen is locked and no lock screen is shown yet we unset
the focused keyboard surface on key event. Similar we restore when
screen is unlocked.
This should hopefully fix the broken lockscreen unit test which hits
the special condition as the greeter doesn't show up on build.kde.org.
InputRedirection uses the inputTransformation() to pass to SeatInterface
for focused pointer surface. This prepares for proper input
transformation including scaling and rotation.
The implementation of VirtualTerminal is too linux specific and doesn't
compile on e.g. freebsd. Currently the most usage is in combination with
libinput. Only usage is:
* libinput related functionality in InputRedirection
* backends without custom input handling
Thus binding the feature to whether libinput is available is currently
the least invasive approach to get it compile on non-Linux.
In the long run this needs a different solution. The functionality
provided by VirtualTerminal is required and without the backends don't
work. It's needed to get notified about VT switches, when KWin needs to
stop rendering. So a solution for non-Linux needs to be found if
non-Linux wants to provide Wayland in future.
REVIEW: 126182
We need to update the pointer position, also if the screen is locked.
Otherwise the pointer doesn't move on the locked screen with libinput.
In addition we need to use the m_globalPointer for finding the correct
lock screen window as updatePointerWindow also does sanity checking on
the coordinates.
Also we need to introduce security checks where we use the signal.
REVIEW: 126103
When screen is locked,
- No window other then screenlocker or inputmethods gets rendered
- Only screenlocker gets keyboard events
- Only screenlocker and inputmethods get mouse events
Things that are not secured/tested are :
- Touch events
- Global shortcuts for screenlocker
- Fallback/emergency screen not yet working
REVIEW: 126015
The way it was implemented it allowed an X11 unmanaged window to become
a key logger. Basically as soon as there was an unmanaged window it got
all key events. This problem was discovered through the xembed-sni-proxy
which broke key input to all Wayland windows in a Plasma/Wayland session.
With this change Unmanaged windows don't get any key events at all. This
might break some applications as e.g. context menus are using override
redirect windows. A test with Qt applications shows that the menus are
still functional and the events are delivered correctly internally.
If applications show problems with this change, we might need to weaken
the restriction.
The Connection thread fills the event queue, it gets read from the
main thread. In order to properly support the threaded approach the
setup is changed to delegate into the own thread.
Properly handle the mouse press/release events in InputRedirection
while we move windows. If it's the last mouse release event we end
the move resize of the window. For that we reuse the code written
in Client.
We take the configuration from the kcminputrc config file, group
keyboard (see plasma-desktop.git/kcms/keyboard/kcmmisc.cpp)
The values are only used for libinput. For backends providing input
events we expect to get repeated key events anyway.
On popular demand!
This change tracks how modifiers are used and detects a modifier only
key press/release. That is:
* no other key is pressed when the modifier gets pressed
* no other key gets pressed before the modifier gets released
If such a press/release is detected, we call a configurable dbus call.
The possible shortcuts can be configured in kwinrc, group
"ModifierOnlyShortcuts". The following keys are supported:
* Shift
* Control
* Alt
* Meta
As value it takes a QStringList (comma seperated string) with
service,path,interface,method,additionalargs
E.g. to invoke Desktop Grid effect on Meta key:
[ModifierOnlyShortcuts]
Meta=org.kde.kglobalaccel,/component/kwin/,org.kde.kglobalaccel.Component,invokeShortcut,ShowDesktopGrid
I do not intend to add a config interface for it. Let's keep it a hidden
way.
REVIEW: 124954
A click outside a popup should close the popup and not be passed to the
window at the pointer position. Thus we only update the internal pointer
window if the internal pointer window does not represent a visible
popup.
* Need to pass modifiers to Client::keyPressEvent
* Need to check whether move/resize ended before updating position,
otherwise it keeps stuck in move/resize after ending
So far if the new position fell outside of the screen, we ignored
the movement completely. This change only discards the event if both
x and y coordinates are outside the screen. If one component is still
on the screen it will be used. So a movement to top-left on left border
will result in a pointer movement towards top.
The KGlobalAccelD which gets created by KWin needs a plugin for the
platform specific parts. This change introduces such a plugin. It's
linked against kwin so that it can integrate with the core.
On enable the plugin registers itself in the InputRedirection and
GlobalShortcutsManager checks the plugin whether a shortcut got
triggered.
As the loading of the plugin must happen after InputRedirection is
fully created a dedicated init method is added to InputRedirection.
REVIEW: 124187
Toplevel provides the input shape forwarded from SurfaceInterface. The
shape is evaluated in InputRedirection when finding the Toplevel at a
given position.
We used to change it only on keypresses. This resulted in the strange
situation that e.g. the input method virtual keyboard doesn't show up
until one presses a real key, because e.g. maliit only activates the
keyboard if there is an active focus object in the Qt application.
If there is a visible internal window it gets the pointer events.
The assumption is that the last created internal window is the top
most in stacking order.
