It's not the most code ever, but it does make desktop-shell somewhat
more complicated for questionable (i.e. no) end-user benefit.
When desktop-shell is back in more healthy shape it could potentially be
reintroduced, but for now it's just making it more difficult to reason
about desktop-shell and fix it.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Exposay was done as a showcase for what we could do with Weston and an
efficient compositing pipeline. This was mostly with the old
vendor-specific Raspberry Pi backend which could actually process that
many surfaces bypassing the GPU.
Given enough bitrot, Exposay is now pretty exemplary as what _not_ to do
in a Weston shell - particularly the way it manipulates existing
weston_views rather than create its own non-destructive stack.
As it's annoying technical debt, a terrible example to others, and not a
very compelling showcase in 2022, just delete it.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Use the common infrastructure we have, rather than open-coding again.
In changing to the common weston_curtain infrastructure which was
introduced in a previous commit, there are two small functional
derivations.
After adding the view to a layer, we explicitly call
weston_view_geometry_dirty(). This is believed to have no functional
impact, as weston_views have their geometry-dirty flag set when they are
created.
weston_surface_damage() is also called to ensure that the surface is
scheduled for a repaint. As there is currently no good common mechanic
in the common code to ensure that output repaint will occur, due to the
damage propagating outwards from the weston_surface, we are forced to
call this to predictably ensure that the output will be repainted after
we have made this change to the scene graph which should result in the
user observing the new content being repainted.
It is possible that these changes are not strictly required in order for
the correct behaviour to occur. However, it is felt that explicitly
adding these calls is perhaps the least fragile way to ensure that the
behaviour continues to be correct and breakage is not observed,
especially with both view mapping and surface damage identified as areas
for future work which could be beneficial to Weston. If it is felt that
these calls can be removed, then this is certainly possible at a later
stage.
Lastly, there are many users within desktop-shell of the common pattern
of creating a weston_curtain and inserting it into the scene graph to be
painted. These users have been an area of both theoretical concern and
real-life observed fragility and breakage recently. By making each user
follow a common and predictable pattern of usage, each user is no longer
its own special case. This should make it easier to make the
desktop-shell codebase more robust, not only simplifying the codebase,
but improving observed behaviour.
In doing this, it is hoped that future structural and interface changes
become easier to make, allowing us to improve some of the more difficult
corners of the libweston API.
Signed-off-by: Daniel Stone <daniels@collabora.com>
This will allow us to create a solid weston_buffer as well, since we
need to store that separately.
Signed-off-by: Daniel Stone <daniels@collabora.com>
This properly tracks the seats and with it, destroys them before
destroying weston_desktop object.
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
After some changes in the exposay layout, the outer padding makes
no sense anymore. It was used to avoid the panel to get overlapped
by the exposay surfaces and to keep distance from the borders
of the window.
Currently, the exposay is centralized and the panel cannot get
overlapped. The outer padding just creates unnecessary unused
space, what makes exposay's surfaces smaller.
Delete outer padding from struct exposay_output.
Signed-off-by: Leandro Ribeiro <leandrohr@riseup.net>
get_output_work_area() can be used by exposay to know the free space
where it can render its surfaces, what avoids overlapping the panel.
Currently this function is declared as static in
desktop-shell/shell.c, so it cannot be used by exposay.
Remove static from get_output_work_area() and add it to shell.h
so it can be used by exposay as well.
Signed-off-by: Leandro Ribeiro <leandrohr@riseup.net>
The main idea is to make libweston users use the form
#include <libweston/libweston.h>
instead of the plain
#include <compositor.h>
which is prone to name conflicts. This is reflected both in the installed
files, and the internal header search paths so that Weston would use the exact
same form as an external project using libweston would.
The public headers are moved under a new top-level directory include/ to make
them clearly stand out as special (public API).
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Change weston_compositor_get_time to return the current compositor time
as a struct timespec. Also, use clock_gettime (with CLOCK_REALTIME) to
get the time, since it's equivalent to the currently used gettimeofday
call, but returns the data directly in a struct timespec.
This commit is part of a larger effort to transition the Weston codebase
to struct timespec.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Change code related to animations to use struct timespec to represent
time.
This commit is part of a larger effort to transition the Weston codebase
to struct timespec.
Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This bumps the libweston major version due to breakage in the animation
ABI. The commits following this one break more ABI in other parts.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Instead of creating a single global fade surface across all outputs,
create a separate surface for each output. This will permit
e.g. individual fades for each output (or blocking the fade-outs if
inhibiting idling as will come in a later patch.)
This also fixes a potential issue if on multihead layout spanning a
desktop wider than 8096 (or higher than 8096), the fade animation may
not completely cover all surfaces.
This assumes the output geometry doesn't change to become larger during
the course of the fade animation.
Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Instead of creating a single global fade surface across all outputs,
create a separate surface for each output. This will permit
e.g. individual fades for each output (or blocking the fade-outs if
inhibiting idling as will come in a latter patch.)
This also fixes a potential issue if on multihead layout spanning a
desktop wider than 8096 (or higher than 8096), the fade animation may
not completely cover all surfaces.
This assumes the output geometry doesn't change larger during the course
of the fade animation.
Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
v5:
+ Use the new libweston-desktop API for dropping idle inhibitor to
ensure fade_out gets triggered if the client destroys the inhibitor
early.
+ Fix a crash when running multi-head due to double free of animations
+ Split idle inhibition implementation to a subsequent patch
All the shell protocol details, Xwayland glue and popups (and their
grab) are now handled in libweston-desktop.
Fullscreen methods (for wl_shell) are removed for now.
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Giulio Camuffo <giulio.camuffo@kdab.com>
Differential Revision: https://phabricator.freedesktop.org/D1209
Although it currently only has one available flag, but that'll change.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
When an output is resized (permanent mode switch), we should also notify the
shell client so that the panel and background fits to the new screen dimensions.
Signed-off-by: David Fort <contact@hardening-consulting.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Add a new boolean weston.ini option, "allow-zap" to enable or disable
the Ctrl-Alt-Backspace key combination.
Signed-off-by: Bob Ham <bob.ham@collabora.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
The xwm used to automatically send to Xwayland the position of X windows
when that changed, using the x,y of the primary view of the surface.
This works fine for the desktop shell but less so for others.
This patch adds a 'send_position' vfunc to the weston_shell_client that
the shell will call when it wants to let Xwayland know what the position
of a window is.
The logic used by the desktop-shell for that is exactly the same the xwm
used to have.
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: David Fort <contact@hardening-consulting.com>
In the effort of going away from generic names of protocols only
relevant for weston, rename the weston desktop shell
weston_desktop_shell.
This also resets the version to 1, as there will be no prior versions
to weston_desktop_shell.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Normally we need to check if a seat's [device_type]_count is > 0 before
we can use the associated pointer. However, in a binding you're
guaranteed that the seat has a device of that type. If we pass in
that type instead of the seat, it's obvious we don't have to test it.
The bindings can still get the seat pointer via whatever->seat if they
need it.
This is preparation for a follow up patch that prevents direct access
to seat->device_type pointers, and this will save us a few tests at
that point.
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Desktop shell demoted all fullscreen shell surfaces on all active
outputs of a multi-display setup whenever any shell surface was
activated anywhere. This made it impossible to have multiple
fullscreen windows on separate outputs active at the same
time, as creating or activating any shell surface would disable
fullscreen status for all existing fullscreen surfaces.
Make lower_fullscreen_layer() more selective, so on request it
only demotes fullscreen surfaces on a specified weston_output.
The activate() method for a specific surface will now only request
demotion of fullscreen surfaces on the target output of the activated
surface, but leave fullscreen surfaces on unrelated outputs alone.
Desktop wide acting functions like the window switcher or exposay
will still demote all fullscreen surfaces on all outputs to
implement their effect as before.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
We used to rely on the order in which the
weston_compositor::destroy_signal callbacks happened, to not access
freed memory. Don't know when, but this broke at least with ivi-shell,
which caused crashes in random places on compositor shutdown.
Valgrind found the following:
Invalid write of size 8
at 0xC2EDC69: unbind_input_panel (input-panel-ivi.c:340)
by 0x4E3B6BB: destroy_resource (wayland-server.c:537)
by 0x4E3E085: for_each_helper.isra.0 (wayland-util.c:359)
by 0x4E3E60D: wl_map_for_each (wayland-util.c:365)
by 0x4E3BEC7: wl_client_destroy (wayland-server.c:675)
by 0x4182F2: text_backend_notifier_destroy (text-backend.c:1047)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Address 0x67ea360 is 208 bytes inside a block of size 232 free'd
at 0x4C2A6BC: free (vg_replace_malloc.c:473)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Invalid write of size 8
at 0x4E3E0D7: wl_list_remove (wayland-util.c:57)
by 0xC2EDEE9: destroy_input_panel_surface (input-panel-ivi.c:191)
by 0x4E3B6BB: destroy_resource (wayland-server.c:537)
by 0x4E3BC7B: wl_resource_destroy (wayland-server.c:550)
by 0x40DB8B: wl_signal_emit (wayland-server-core.h:264)
by 0x40DB8B: weston_surface_destroy (compositor.c:1883)
by 0x40DB8B: weston_surface_destroy (compositor.c:1873)
by 0x4E3B6BB: destroy_resource (wayland-server.c:537)
by 0x4E3E085: for_each_helper.isra.0 (wayland-util.c:359)
by 0x4E3E60D: wl_map_for_each (wayland-util.c:365)
by 0x4E3BEC7: wl_client_destroy (wayland-server.c:675)
by 0x4182F2: text_backend_notifier_destroy (text-backend.c:1047)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Address 0x67ea370 is 224 bytes inside a block of size 232 free'd
at 0x4C2A6BC: free (vg_replace_malloc.c:473)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Invalid write of size 8
at 0x4E3E0E7: wl_list_remove (wayland-util.c:58)
by 0xC2EDEE9: destroy_input_panel_surface (input-panel-ivi.c:191)
by 0x4E3B6BB: destroy_resource (wayland-server.c:537)
by 0x4E3BC7B: wl_resource_destroy (wayland-server.c:550)
by 0x40DB8B: wl_signal_emit (wayland-server-core.h:264)
by 0x40DB8B: weston_surface_destroy (compositor.c:1883)
by 0x40DB8B: weston_surface_destroy (compositor.c:1873)
by 0x4E3B6BB: destroy_resource (wayland-server.c:537)
by 0x4E3E085: for_each_helper.isra.0 (wayland-util.c:359)
by 0x4E3E60D: wl_map_for_each (wayland-util.c:365)
by 0x4E3BEC7: wl_client_destroy (wayland-server.c:675)
by 0x4182F2: text_backend_notifier_destroy (text-backend.c:1047)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Address 0x67ea368 is 216 bytes inside a block of size 232 free'd
at 0x4C2A6BC: free (vg_replace_malloc.c:473)
by 0x4084FB: wl_signal_emit (wayland-server-core.h:264)
by 0x4084FB: main (compositor.c:5465)
Looking at the first of these, unbind_input_panel() gets called when the
text-backend destroys its helper client which has bound to input_panel
interface. This happens after the shell's destroy_signal callback has
been called, so the shell has already been freed.
The other two errors come from
wl_list_remove(&input_panel_surface->link);
which has gone stale when the shell was destroyed
(shell->input_panel.surfaces list).
Rather than creating even more destroy listeners and hooking them up in
spaghetti, modify text-backend to not hook up to the compositor destroy
signal. Instead, make it the text_backend_init() callers' responsibility
to also call text_backend_destroy() appropriately, before the shell goes
away.
This fixed all the above Valgrind errors, and avoid a crash with
ivi-shell when exiting Weston.
Also using desktop-shell exhibited similar Valgrind errors which are
fixed by this patch, but those didn't happen to cause any crashes AFAIK.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-By: Derek Foreman <derekf@osg.samsung.com>
This is a follow-up for the patch that removed weston-screensaver. The
aim is to clean up shell.c a little by removing non-essential
components. Vanilla Weston desktop is only a demo, external projects are
encouraged to create user-friendly desktop environments.
The support for launching a screensaver client and the protocol bindings
are removed. With them, all related configuration options are removed,
and the manuals are updated accordingly.
The screensaver protocol definition is left in desktop-shell.xml for
posterity.
This does not affect Weston's or desktop-shells ability to put screens
to sleep after inactivity. The inactivity timer continues to operate as
before. Also screen locking is unaffected.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Acked-by: Giulio Camuffo <giuliocamuffo@gmail.com>
If weston-desktop-shell dies soon after launch, or maybe cannot be
executed at all, let weston exit rather than letting the user stare at a
black screen.
But, do not exit weston, if weston-desktop-shell dies later, as the user
may already have apps open, and those apps would likely still function
correctly. This gives the user the opportunity to save his work and
close the apps properly.
This should make one class of "I see only black screen" failures obvious.
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
The desktop shell plugin registers both a wl_client destroy signal
listener, and a sigchld handler, when launching weston-desktop-shell.
However, nothing guarantees in which order do the wl_client destructor
and the sigchld handler run.
Luckily, the sigchld handler cannot interrupt any code, because we
handle the signal via signalfd, which means it is handled like any event
in the compositor's main event loop.
Still, shell.c has a race, that when lost, can cause a crash, as
described in bug #82957.
If the sigchld handler happens to run first, it will try to launch a new
weston-desktop-shell without removing the destroy listener from the old
wl_client first. This leads to list corruption, that may cause a crash
when the old wl_client gets destroyed.
Simply removing the destroy listener in the sigchld handler is not
enough, because respawning sets shell->child.client pointer, and if
the wl_client destructor runs after, it will reset it to NULL.
OTOH, the wl_client destroy handler cannot reset shell->child.process,
because that would cause the sigchld handler in weston core to not find
the process tracker anymore, and report that an unknown process exited.
Turns out, that to make everything work, we would need to wait for both
the wl_client destructor and the sigchld handler to have run, before
respawn. This gets tricky.
Instead, solve the problem by removing shell->child.process. Use the new
weston_client_start() which automatically creates and manages the struct
weston_process. The shell does not need to know about the process exit,
it only needs to know about the client disconnect. Weston-desktop-shell
will never attempt to reconnect, and it would not work even if it did,
so disconnect is equivalent to weston-desktop-shell exiting.
This should permanently solve the race for weston-desktop-shell.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=82957
Cc: Boyan Ding <stu_dby@126.com>
Cc: Derek Foreman <derekf@osg.samsung.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Panels are always assumed to be on the top edge of the output. If this
is not the case views will be placed under the panel, wherever it is,
and maximize doesn't use the correct space allocated for views.
By telling the server on which edge the panel is located, it can
correctly calculate where to put new views and how big maximized views
should be.
[Pekka Paalanen: the user of this protocol so far is Maynard.]
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
At the moment when surfaces are destroyed they are faded out but let's
make it configurable!
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Previously, desktop-shell would only create its internal shell_seat object
for each seat available when the desktop-shell module is loaded. This is a
problem any time seats are created dynamically. In particular, the Wayland
and RDP backends create seats on an as-needed basis and they weren't
getting picked up proprely by desktop-shell.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=77649
lower_fullscreen_surface() was removing fullscreen surfaces from
the fullscreen layer and inserting them in the normal workspace
layer. However, those fullscreen surfaces were never put back in
the fullscreen layer, causing bugs such as unrelated surfaces
being drawn between a fullscreen surface and its black view.
Change the lower_fullscreen_surface() logic so that it lowers
fullscreen surfaces to the workspace layer *and* hides the
black views. Make this reversible by re-configuring the lowered
fullscreen surface: when it is re-configured, the black view
will be shown again and the surface will be restacked in the
fullscreen layer.
https://bugs.freedesktop.org/show_bug.cgi?id=73575https://bugs.freedesktop.org/show_bug.cgi?id=74221https://bugs.freedesktop.org/show_bug.cgi?id=74222
Previously, the repositioning logic would iterate the compositor's list
of layers and move the views on those layers. However, that failed in
two different ways: it didn't cover hidden workspaces and crashed when
the display was locked.
This patch changes the logic to explicit iterate over all the layers
owned by the shell. The iteration is done through a helper function,
shell_for_each_layer().
https://bugs.freedesktop.org/show_bug.cgi?id=76859https://bugs.freedesktop.org/show_bug.cgi?id=77290
We now handle the client-side xdg_surface_set_minimized()
call, and eventually hide the target surface by moving it
to a dedicated layer.
Signed-off-by: Manuel Bachmann <manuel.bachmann@open.eurogiciel.org>
Since that signal is per output, it is necessary to track in which
output a view is in so that the signal is handled properly.
Instead, add a compositor wide output moved signal, that is handled by
the shell. The shell iterates over the layers it owns to move views
appropriately.
Add a config file option to enable it, but leave it off by default. Exposay
still triggers too many lock-ups or stuck grabs and triggers under X even
when the Wayland window doesn't have keyboard focus.
Set the internal pointer for the client to NULL. This fixes a
segmentation fault at shutdown, where the shell would hang up before
and cause libwayland to call wl_client_destroy(). When the shell was
destroyed later, another call to wl_client_destroy() would cause the
crash.
https://bugs.freedesktop.org/show_bug.cgi?id=72550
Daniel Stone
Marius Vlad
Leandro Ribeiro
Pekka Paalanen
Alexandros Frantzis
Bryce Harrington
Quentin Glidic
Jussi Kukkonen
Jonas Ådahl
David Fort
Bob Ham
Giulio Camuffo
Derek Foreman
Mario Kleiner
Pekka Paalanen
Jonny Lamb
Jason Ekstrand
Emilio Pozuelo Monfort
Ander Conselvan de Oliveira
Manuel Bachmann
Kristian Høgsberg