AnimationEffect schedules repaints in postPaintWindow() and performs
cleanup in preScreenPaint(). With the X11-style rendering, this doesn't
have any issues, scheduled repaints will be reset during the next
compositing cycle.
But with per screen rendering, we might hit the following case
- Paint screen 0
- Reset scheduled repaints
- AnimationEffect::prePaintScreen(): update the timeline
- AnimationEffect::postPaintScreen(): schedule a repaint
- Paint screen 1
- Reset scheduled repaints
- AnimationEffect::prePaintScreen(): destroy the animation
- AnimationEffect::postPaintScreen(): no repaint is scheduled
- Return to the event loop
In this scenario, the repaint region scheduled by AnimationEffect will
be lost when compositing is performed on screen 1.
There is no any other way to fix this issue but maintain repaint regions
per each individual screen if per screen rendering is enabled.
BUG: 428439
XdgSurfaceClient tries to avoid sending unnecessary configure events,
but in some cases, the compositor has to send one even if the surface
state hasn't changed, for example in response to a set_maximized()
request, etc.
This change introduces a special flag to indicate that the scheduled
event has to be sent no matter what.
Placement::placeTransient() checks the frame geometry right after
setting it. That is a problem because geometry updates for
XdgPopupClient are made in async fashion. We need to block geometry
updates in order to ensure that window placement code sees correct
geometry.
The main motivation for this change is to enable support for our
proprietary shadow protocol in LayerShellV1Client.
Previously we couldn't move code that handles shadows in WaylandClient
because WaylandClient::bufferGeometry() was a pure virtual method.
If showOnScreenEdge is called, immediately followed by the client's destruction, it's possible that the next event queue process will call raiseClient with a destroyed client.
We avoid this by using singleShot that is lifetime-aware.
Edge::handle calls showOnScreenEdge, which (on wayland) eventually calls internalShow, which eventually calls ScreenEdges::reserve, which destroys the same edge.
When showScreenOnEdge returns, 'this' has been freed.
Using a singleshot timer allows Edge::handle to return before the Edge is destroyed.
The layer-shell protocol allows wayland clients to create surfaces that
can be used for building desktop environment components such as panels,
notifications, etc.
The support for the plasma-shell protocol will be dropped once plasma in
all its entirety is ported to the layer-shell protocol.
in XdgSurfaceClient setFrameGeometry is async,
so we can't rely on it having the final value immediately.
make setVirtualKeyboardGeometry a virtual.
in the implementation on setVirtualKeyboardGeometry
use requestedFrameGeometry() instead of frameGeometry()
Toplevel::debug() is one of annoyances that you need to deal with when
implementing a new client type. It can be tempting to just write "this"
to the stream, but it will result in a crash.
In order to make implementing new client types easier, this change
introduces a debug stream insertion operator overload that works for all
kinds of the Toplevel class.
This change adds a default handle for screen edge based activation in
order to reduce the amount of boilerplate in client sub-classes that do
not support features such as auto-hiding, e.g. popups.
This change adds a default implementation for no border functionality
in order to reduce the amount of boilerplate code in client sub-classes
that have no support for server-side decorations.
Not all client types support server-side decorations, for example it's
typically the case for popup windows. This change provides a default
implementation for the updateDecoration() method in order to reduce the
amount of boilerplate code in client types that have no support for ssd.
Currently, we have two functions that update the color scheme for a
client - updateColorScheme(QString) and updateColorScheme(). Even though
they both share the same name, they do different things. The first one
sets the specified color scheme, while the other determines the color
scheme preferred by the client and assigns it.
This change refactors the color scheme initialization code so we no
longer need those two methods. The setColorScheme() method sets the
specified color scheme, and the preferredColorScheme() method returns
the color scheme preferred by the client. Sub-classes of AbstractClient
can override the preferredColorScheme() method in order to add support
for platform-specific color scheme protocols.
The end result: color scheme related code is a bit more comprehensible.
This change upstreams window hiding functionality from the XdgSurfaceClient
class to the WaylandClient class in order to reduce the amount of duplicated
code in new wayland client sub-classes.
The main advantage of SPDX license identifiers over the traditional
license headers is that it's more difficult to overlook inappropriate
licenses for kwin, for example GPL 3. We also don't have to copy a
lot of boilerplate text.
In order to create this change, I ran licensedigger -r -c from the
toplevel source directory.
Debugging the panel thumbnails I realised that the setPosition calls
didn't have an effect. This is probably not the only way to fix this bug
but does fix the bug.
At the moment it only brings the position from the interface.
In rare cases, Workspace::restoreFocus() may fail, for example when the
most recently activated client is about to be destroyed or unmapped.
If it happens that we cannot restore the focus, then mark the window in
FocusIn event as active.
CCBUG: 424223
The new signal can be useful if one wants to watch a toplevel for buffer
geometry updates. This can be especially useful for input related code
because the position of the upper left corner of the main surface is used
to compute the input transformation matrix.
We may call setActive() on a window that is being deleted. We cannot
guarantee that at that moment the X11 window or the Wayland surface is
still valid. So, the best course of actions is to do nothing.
BUG: 424255
In order to ensure that no configure events will be sent before the full
initial state is committed, we need to queue maximize and full screen
requests or else the client may receive an "unexpected" configure event
and we miss to call initialize().
QDebug& operator<<(QDebug& stream, TopLevel*)
calls TopLevel::debug(stream)
So our implementation has to provide something custom not call the base
class.
Debug here is loosely based on X11Client. It probably can be expanded on
in time, but at least it won't crash.
In most cases, we don't need to react to client geometry changes, but in
code that deals with server-side window decorations, we need to react to
client geometry changes. The problem is that frame and client geometry
updates are not correlated even though there is a connection between the
frame geometry and the client geometry.
This change introduces the client geometry in the Toplevel class in order
to allow monitoring client geometry updates from DecoratedClientImpl.
There are several ways to handle unmapping of a wl_surface. The first
one is to destroy the associated AbstractClient instance. The second one
is to transition the AbstractClient in a special state.
The problem with the second approach is that it makes animations such as
fade out more difficult to handle since effects in kwin are geared more
towards the first approach (destroying AbstractClient).
Summary:
This change splits the XdgShellClient class to better match existing
abstractions in the xdg-shell protocol and fix a few issues related to
sending configure events.
In the new client classes, configure events are handled differently.
Instead of blocking configure events, we try to send them as late as
possible. Delaying configure events will let us merge changeMaximize()
for X11 clients and Wayland clients and it also fixes the bug where
we don't send the final configure event when user has finished resizing
a window.
Given that configure events are not sent immediately, XdgSurfaceClient
keeps the last requested frame geometry and the last requested client
geometry.
This patch doesn't intend to fix all issues in kwin's implementation of
the xdg-shell protocol. For example, we still handle surface unmapping
very poorly.
Test Plan: Tests pass.
Reviewers: #kwin
Subscribers: kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D27861
We don't need to bind disabled outputs to surfaces that overlaps them.
This prevents error down the line and warnings about ignoring surface.enter events with Qt.
BUG: 419749
