`gcc-14` added a new warning around dangerous use of `strncpy()` withi
known overflow:
../sway/config.c: In function 'do_var_replacement':
../sway/config.c:983:33: error: '__builtin___strncpy_chk' specified bound depends on the length of the source argument [-Werror=stringop-truncation]
983 | strncpy(newptr, var->value, vvlen);
| ^
../sway/config.c:971:45: note: length computed here
971 | int vvlen = strlen(var->value);
| ^~~~~~~~~~~~~~~~~~
It's a bit fishy to rely on truncating behaviour of `strncpy()`. The
change uses `memcpy()` as more explicit way to express copy of `vvlen`
bytes.
Remove any existing executed criteria items at unmap time. If a window
gets unmapped but not destroyed, we want to reapply 'for_window'
criteria. Fixes#6905.
This reverts commit afde6369
"seat: avoid unneeded reloading xcursor theme".
Always avoiding to reload the xcursor theme prevents reloading the
cursor even when this is desired. Instead seat_configure_xcursor
can determine whether a full reload is necessary.
To stay with the spirit of the reverted change, cursors are only fully
reloaded, if the theme has changed.
Fixes#6931
3d5ae9813d added logic to change the
underlying wlr_toplevel size for floating containers, but it does it
even if the container has no actual coordinates yet. This doesn't really
make sense to update the toplevel size in this case since there's many
things that could affect the initial coordinates (sway commands,
fullscreen state, etc.). Skip this by doing a crude check to see if the
current container state has any width.
Previous behavior was that only if resolution and refresh rate match
exactly, the mode was accepted. As fallback, the mode with the highest
refresh rate and the same resolution was chosen.
New behavior is that the mode with the closest match for the refresh
rate is used with a limit of up to 1Hz. The fallback behavior stays the same.
Additionally, the logging was made more verbose.
When using the `map_from_region` for pen tables, we will usually make
the available area as big as possible while maintaining the proportions
with the screen.
As most of the tablets uses a 16:10 ratios while the most popular screen
ratios is still 16:9, the argument for most people should be `0x0 1x0.9`
to have the maximum effective area.
However, the argument above won't work because the current code will
treat `0x...` as a hexadecimal number, instead of setting both `x` and
`y` to `0`.
This fix allows the use of the following syntax:
```
input type:tablet_tool {
map_from_region 0x0 1x0.9
}
```
If a floating client resizes itself, sway updates several of its
internal dimensions to match but not wlr_toplevel. This means that the
next time wlroots sends a toplevel configure event, it can have wrong
coordinates that resize the client back to its old size. To fix this,
let's just use wlr_xdg_toplevel_set_size so the wlr_toplevel has the
same dimensions as sway.
Exactly the same as 0183b9d35d0ce750588e700e536b7d2e367b0d0a but the
logic is onlly applied to xdg_shell and not xwayland.
This isn't the right fix for this issue because the xwayland code also
uses this function and updating the wlr_toplevel there doesn't make
sense and also causes problems. Fixes#7722.
This reverts commit bf44690ee8.
If a floating client resizes itself, sway updates several of its
internal dimensions to match but not wlr_toplevel. This means that the
next time wlroots sends a toplevel configure event, it can have wrong
coordinates that resize the client back to its old size. To fix this,
let's just use wlr_xdg_toplevel_set_size so the wlr_toplevel has the
same dimensions as sway. Fixes#5266.
Regular clients are not allowed to use this interface. wlroots
already sends a protocol error if a non-Xwayland client tries to
use this interface, but let's remove all temptation by hiding it
completely.
With recent wlroots changes, backends which don't support output
modes can now support being disabled.
We were always marking mode-less outputs as disabled. Stop doing
that, check whether the output takes up some space in the layout
instead.
Sway has two knobs to control idling:
- seat idle_inhibit: when the seat is active (ie. not idle), this
extends the active state. When the seat is idle, this is
ignored.
- seat idle_wake: when the seat is idle, this wakes up the seat.
When the seat is active, this is ignored.
The motivation for the deprecation is two-fold:
- The concept of "seat idle state" is ill-defined. Each idle-notify-v1
client will pass a different idle timeout. With the old logic, a
seat was declared idle if and only if all idle-notify-v1 timeouts have
expired. However, if only a portion of the timeouts have expired,
then some clients would wake up, and the rest would stay active.
This is inconsistent with the definition of idle_inhibit/idle_wake:
idle_inhibit was used for clients which are waking up.
- It never worked properly with the new idle-notify-v1 protocol
and no-one noticed. Only the legacy KDE idle protocol is taken
into account, but that protocol is not used anymore.
On multi-seat configurations a zwp_pointer_gestures_v1 global was
created for every seat.
Instead, create the global once in the input manager, to be shared
across all seats.
In case a display is unplugged, the sway output may be removed from the
userdata before the gamma_control can be reset. In this case we can't
schedule a commit on the output, simply return within the function.
backtrace full:
#0 handle_gamma_control_set_gamma (listener=0x4856a8 <server+616>, data=0x7ffce1ed59c0) at ../sway/desktop/output.c:1105
server = 0x485440 <server>
event = 0x7ffce1ed59c0
output = 0x0
#1 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#2 0x00007f430d142370 in gamma_control_destroy (gamma_control=0x29eb9b0) at ../types/wlr_gamma_control_v1.c:37
manager = 0x27e33e0
output = 0x2a10770
event = {output = 0x2a10770, control = 0x0}
#3 0x00007f430d14239b in gamma_control_handle_output_destroy (listener=<optimized out>, data=<optimized out>)
at ../types/wlr_gamma_control_v1.c:59
gamma_control = <optimized out>
#4 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#5 0x00007f430d12a0e0 in wlr_output_destroy (output=output@entry=0x2a10770) at ../types/output/output.c:384
cursor = <optimized out>
tmp_cursor = <optimized out>
layer = <optimized out>
tmp_layer = <optimized out>
#6 0x00007f430d114ecf in disconnect_drm_connector (conn=conn@entry=0x2a10770) at ../backend/drm/drm.c:1757
__PRETTY_FUNCTION__ = "disconnect_drm_connector"
#7 0x00007f430d117078 in scan_drm_connectors (drm=drm@entry=0x1eebab0, event=event@entry=0x7ffce1ed5c1c) at ../backend/drm/drm.c:1597
c = <optimized out>
wlr_conn = 0x2a10770
drm_conn = 0x2e760d0
conn_id = <optimized out>
index = 4
i = 4
res = 0x2e761f0
seen_len = 5
seen = {true, true, true, true, true, false}
new_outputs_len = 0
new_outputs = 0x7ffce1ed5ab0
conn = <optimized out>
tmp_conn = <optimized out>
index = <optimized out>
#8 0x00007f430d113425 in handle_dev_change (listener=0x1eebbb0, data=0x7ffce1ed5c18) at ../backend/drm/backend.c:157
drm = 0x1eebab0
change = 0x7ffce1ed5c18
#9 0x00007f430d1dca0c in wl_signal_emit_mutable ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#10 0x00007f430d111696 in handle_udev_event (fd=<optimized out>, mask=<optimized out>, data=<optimized out>)
at ../backend/session/session.c:213
event = {type = WLR_DEVICE_HOTPLUG, {hotplug = {connector_id = 0, prop_id = 0}}}
devnum = <optimized out>
dev = 0x1ed9460
session = <optimized out>
udev_dev = 0x2e70db0
sysname = 0x2e73c60 "card0"
devnode = <optimized out>
action = 0x7f430d6677b5 "change"
seat = <optimized out>
__PRETTY_FUNCTION__ = "handle_udev_event"
#11 0x00007f430d1de8e2 in wl_event_loop_dispatch ()
from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#12 0x00007f430d1dc445 in wl_display_run () from /nix/store/ky1g6ylzr2m4bq8fy0gzrnqmjr6948k5-wayland-1.22.0/lib/libwayland-server.so.0
No symbol table info available.
#13 0x000000000041daa5 in server_run (server=server@entry=0x485440 <server>) at ../sway/server.c:338
No locals.
#14 0x000000000041cf4d in main (argc=<optimized out>, argv=0x7ffce1ed5fe8) at ../sway/main.c:415
verbose = false
debug = false
validate = false
allow_unsupported_gpu = false
config_path = 0x0
c = <optimized out>
where event->output->data is NULL:
(gdb) p event->output->data
$5 = (void *) 0x0
This allows for layer shell surfaces to receive focus while the surface is explicitly focused, i.e allowing
text fields to receive keyboard input just like a regular surface.
Clear was done using sway_output's logical dimensions, instead of the
wlr_output physical dimensions. This meant that when output scaling was
applied, only a part of the screen would be cleared.
Use the wlr_output dimensions instead.
Regressed by: https://github.com/swaywm/sway/pull/7552
The new wlr_render_pass API provides src_box, dst_box and clip
parameters for texture rendition. Rather than clipping the dst_box,
which control the projection matrix and leads to compression, intersect
the damage and clip box and pass these as a clip parameter.
Fixes: https://github.com/swaywm/sway/issues/7579
Regressed by: https://github.com/swaywm/sway/pull/7552
This was introduced in the last libinput release.
Fixes the following error:
../sway/ipc-json.c:928:17: error: enumeration value 'LIBINPUT_CONFIG_ACCEL_PROFILE_CUSTOM' not handled in switch [-Werror=switch]
928 | switch (libinput_device_config_accel_get_profile(device)) {
| ^~~~~~
Fixes an issue where an already visible scratchpad window being moved due to
'scratchpad show' leaves the entire workspace at the top of the focus stack in
the old workspace. Moving by 'focus output' back to the old workspace would
focus the entire workspace instead of just the last active container.
This makes the behavior of floating containers more consistent with i3.
The coordinates of the container are scaled when the size of the
workspace it is on changes or when the container is moved
between workspaces on different outputs.
For scratchpad containers, add a new state that preserves the dimensions
of the last output the window appeared on. This is necessary because
after a container is hidden in the scratchpad, we expect it to be in the
same relative position on the output when it reappears. We can't just
use the container's attached workspace because that workspace's
dimensions might have been changed or the workspace as a whole could
have been destroyed.
CAIRO_HINT_STYLE_FULL attempts to maximize contrast at the expense
of fidelity, this makes most fonts that haven't been hand hinted,
which makes up the majority of fonts out there, appear much worse.
In the absence of explicitly set hint style, cairo will default to
CAIRO_HINT_STYLE_SLIGHT, which attempts to improve contrast while
retaining fidelity to the original shapes, which is what we want.
When a window in the scratchpad container requests for
xdg_activation_v1, it is ignored no matter what the value of
focus_on_window_activation is.
At least allow windows in the scratchpad to set the urgent flag. When
focus_on_window_activation is set to "focus", show the parent scratchpad
where the contained requested for xdg_activation_v1.
Check whether output->damage_ring.current is empty before calling
wlr_output_attach_render(). Saves us from having to un-do that
via wlr_output_rollback().
Atm we got issue with the touch position sent to the clients. While
holding contact, leaving the initial container will continue to send
motion event to the client but with the new local position from the new
container.
This seatop goal is to send the position of the touch event, relatively
to the initial container layout position.
This function was already declared in container.h but defined in
commands/swap.c for some unknown reason. Everything in commands/ assumes
the handler context has been set appropriately by the command preludes
but this function snuck its way into seatop_* which doesn't set anything
in the handler context.
The fact that the seatop drag actions manipulate the focus without
custody of the seat means they are definitely very broken in multiseat.
With `hide_edge_borders both` (or at least `vertical`),
`window_rect.y` will equal `border_thickness` for SOME windows,
but it will be 0 for windows adjacent to top screen edge.
Therefore setting it to `border_thickness` is not sufficient.
This commit changes it to the actual y offset of content
into the container.
xdg-activation is now too strict in only allowing tokens with a seat to
activate a surface. Clients may rely on this behavior for urgency hints.
The seat argument is still useful in case the client does provide a seat
so we can activate it on the desired seat.
Fixes: 842609da64 (view: make request_activate take a seat, 2022-11-30)
fixes#7394
Test cases:
* zwlr_output_configuration_head_v1_set_adaptive_sync 0->0, no change
* 0->1, enabled
* 1->0, disabled
* 1->1, no change
Similar tests with an incapable display resulted in `"Adaptive sync
failed, ignoring"` messages as expected.
Since [1], wlr_renderer_begin() can fail. Check its return value
and bail.
This fixes an assertion error (when begin() fails and then we try
to render something) after a GPU reset.
[1]: a541c9510a
This change allows the tablet tool button to be used for floating mod
resize. In addition, it attempts to ensure that tablet tool events are
consistent such that tablet v2 events and pointer events will never be
interleaved, and such that the tool buttons count will never fall out of
sync and cause tool button emulation to break.
Some of this logic is similar to what is done for tablet tool tip, but
not quite identical, because of the complication that we have to deal
with multiple inputs that can overlap eachother.
Fixes#7036.
This might be the wrong fix, but the crash is happening because the ->data
field on an xwayland surface is NULL. A NULL data field is normal for
unmanaged surfaces, however it seems clients can do weird things: They can
create a cursor lock on a regular xwayland surface then make it unmanaged
by calling override_redirect. In this case, the xwayland server should
destroy the cursor lock, which is does, but does so in the wrong order
making it try to dereference a NULL pointer after sway has acknowledged
its new unmanaged status.
```
(gdb) bt full
0 0x000055fd91934861 in warp_to_constraint_cursor_hint (cursor=0x55fd93486c00)
at ../sway/input/cursor.c:1243
sy = 605
lx = 6.9527431433545762e-310
sx = 1272
view = 0x0
con = 0x7ffd1cdfe400
ly = -6.949595189996421e+59
constraint = 0x55fd93e7faa0
1 0x000055fd91934976 in handle_constraint_destroy (listener=0x55fd93f0fd58, data=0x55fd93e7faa0)
at ../sway/input/cursor.c:1266
sway_constraint = 0x55fd93f0fd30
constraint = 0x55fd93e7faa0
cursor = 0x55fd93486c00
2 0x00007fda8275bf6e in wl_signal_emit_mutable () at /usr/lib/libwayland-server.so.0
3 0x00007fda82e57016 in pointer_constraint_destroy (constraint=0x55fd93e7faa0)
at ../subprojects/wlroots/types/wlr_pointer_constraints_v1.c:49
4 0x00007fda82e570dc in pointer_constraint_destroy_resource (resource=0x55fd933cf8f0)
at ../subprojects/wlroots/types/wlr_pointer_constraints_v1.c:66
constraint = 0x55fd93e7faa0
5 0x00007fda8275d8ba in () at /usr/lib/libwayland-server.so.0
6 0x00007fda8275f6a9 in wl_resource_destroy () at /usr/lib/libwayland-server.so.0
7 0x00007fda82e56fb3 in resource_destroy (client=0x55fd93ea52e0, resource=0x55fd933cf8f0)
at ../subprojects/wlroots/types/wlr_pointer_constraints_v1.c:39
8 0x00007fda81d8f4f6 in () at /usr/lib/libffi.so.8
9 0x00007fda81d8bf5e in () at /usr/lib/libffi.so.8
10 0x00007fda81d8eb73 in ffi_call () at /usr/lib/libffi.so.8
11 0x00007fda8275aada in () at /usr/lib/libwayland-server.so.0
12 0x00007fda8275f01c in () at /usr/lib/libwayland-server.so.0
13 0x00007fda8275d9e2 in wl_event_loop_dispatch () at /usr/lib/libwayland-server.so.0
14 0x00007fda8275e197 in wl_display_run () at /usr/lib/libwayland-server.so.0
15 0x000055fd919264d3 in server_run (server=0x55fd919a3a80 <server>) at ../sway/server.c:320
16 0x000055fd91925457 in main (argc=1, argv=0x7ffd1cdfed98) at ../sway/main.c:411
verbose = false
debug = false
validate = false
allow_unsupported_gpu = false
config_path = 0x0
c = -1
```
sway sends wl_keyboard.enter on seat focus change and when a keyboard
active on a seat is configured. If all keyboards are removed and a
keyboard is added back without changing the focused client, no new
notify event would be sent despite having keyboard focus. This could
lead to key events without notify, which is a protocol violation.
As a quick fix, when configuring a keyboard on a seat where no keyboard
is currently active, activate the keyboard so that a focused surface
will receive a notify event.
Regressed by: e1b268af98
Closes: https://github.com/swaywm/sway/issues/7330
efd83cb8 added the rotation_angle command but it didn't insert it in
the proper place in the list, so the repeat_delay and repeat_rate
commands became unusable.
See: https://github.com/swaywm/sway/issues/4511
Adds a bool config option `primary_selection`, which explicitly
enables/disables the primary selection clipboard. Defaults to enabled.
This is implemented as a launch-only option which enables or disables the creation of the
`zwp_primary_selection_device_manager_v1` global.
Co-authored-by: Tilde Rose <t1lde@protonmail.com>
When we reload the config, we reset every input device and re-apply
configuration from the config file. This means that the keyboard keymap
is updated at least once during config reload, more if the config file
contains keyboard configuration.
When they keyboard keymap changes and is updated through wlr_seat, the
keymap ends up sent to every keyboard bound in every client, seemingly
multiple times. On an x230 of mine with a keyboard layout set in the
config file, I see 42 keymap events sent to foot on config reload.
Reduce events from keyboard configurations by skipping all but the
currently active keyboard for the seat, and by clearing the active
keyboard during input manager device reset. After this change, I only
see a single just-in-time keymap event.
Fixes: https://github.com/swaywm/sway/issues/6654
Views now maintain a reference to a launch context which, as a last
resort, is populated at map time with a context associated with its pid.
This opens the possibility of populating it before map via another
source, e.g. xdga-tokens or configuration.
This removes the need to rename the pid_workspaces when a workspace
is renamed.
It also opens the possibility of tracking other node types. Tracking
containers would allow application to be placed correctly in the
container tree even if the user has moved their focus elsewhere since
it was launched.
Any windows that have never had a title set visually behave closer to
that of an empty title, but are unformattable, as the code bails out
early on a NULL title.
Support the new dwtp (disable while trackpointing) option introduced in
libinput 1.21, allowing users to control whether the trackpoint (like
those in Thinkpads, but not only) should be disabled while using the
keyboard/touchpad.
See: https://gitlab.freedesktop.org/libinput/libinput/-/issues/731
Remove the incorrect attempt to block focus changes when an input grab
is present and replace it with the same logic used for layer_shell-based
screen lockers: restore the focus after changing it.
This fixes a use-after-free of seat->workspace if outputs are destroyed
while a screen lock is enabled.
When removing outputs, it is possible to end up in a situation where
none of the session lock client's surfaces have keyboard focus,
resulting in it not receiving keyboard events. Track the focused
surface and update it as needed on surface destroy.
Sway focuses the inactive child when focusing split containers. However,
there is currently no way to focus the parent container itself by mouse.
A user must use the keyboard to do so.
This commit maintains the current behavior, but makes it such that a
second click on the split container titlebar (i.e., after its children
are visible) focuses the split container itself.
Currently, when encountering a non-desktop display, sway offers the
output for leasing and returns without storing it in a sway specific
output type like `struct sway_output`. Additionally, running
`swaymsg -t get_outputs` doesn't show non-desktop outputs.
This commit stores the non-desktop outputs into a struct called
`sway_output_non_desktop`, and adds them to a list on `sway_root`
Without this, the `IPC_GET_TREE` ipc call would return false information
about the container's `deco_rect` and `rect` properties if
`hide_edge_borders --i3` was in effect.
This semi-colon looks like a typo. Luckily, it has no effect on the code as it's treated as an empty statement leading the switch case.
Really straightforward nitpick change, was just something I was confused by when reading over the code.
Use pango to parse font configuration early, and reject the command as
invalid if the value is invalid for pango. Since we're already parsing
the font into a `PangoFontDescription`, keep that instance around and
avoid re-parsing the font each time we render text.
Fixes: https://github.com/swaywm/sway/issues/6805
If the input device is quoted, which is common when using variables in the
config file, those quotes must be ignored here, or the input device will be
ignored.
Fixes#7029.
The "dpms" command refers to VESA Display Power Management
Signaling, a deprecated standard. It's superseded by VESA DPM.
Instead of tying out command name to a particular standard, use the
neutral term "power".
This ensures that those surprised by the deprecation of SUID operation
receive an error rather than accidentally having sway run as root.
This detection will be removed in a future release.
Try to gain SCHED_RR (round-robin) realtime scheduling privileges before
starting the server. This requires CAP_SYS_NICE on Linux systems.
We additionally register a pthread_atfork callback which resets the
scheduling class back to SCHED_OTHER (the Linux system default).
Due to CAP_SYS_NICE, setting RLIMIT_RTPRIO has no effect on the process
as documented within man 7 sched (from Linux):
Privileged (CAP_SYS_NICE) threads ignore the RLIMIT_RTPRIO limit;
as with older kernels, they can make arbitrary changes to
scheduling policy and priority. See getrlimit(2) for further
information on RLIMIT_RTPRIO
Note that this requires the sway distribution packagers to set the
CAP_SYS_NICE capability on the sway binary.
Supersedes #6992
Wlroots does not yet support the newer xdg-shell versions and now
requires the compositor to set the supported xdg-shell version during
creation. Set this to v2 for sway as well.
Fixes https://github.com/swaywm/sway/issues/7001
strncpy is useless here, is dangerous because it doesn't guarantee
that the string is NUL-terminated and causes the following warning:
../sway/criteria.c: In function ‘criteria_parse’:
../sway/criteria.c:712:25: error: ‘strncpy’ destination unchanged after copying no bytes [-Werror=stringop-truncation]
712 | strncpy(value, valuestart, head - valuestart);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Our layer shell implementation assigns every layer surface to an output
on creation. It tracks this output using the output field on the
underlying wlr_layer_surface_v1 structure. As such, much of the existing
code assumes that output is always non-NULL and omits NULL checks
accordingly.
However, there are currently two cases where we destroy a
sway_layer_surface and output is NULL. The first is when we can't find
an output to assign the surface to and destroy it immediately after
creation. The second is when we destroy a surface in response to its
output getting destroyed, as we set output to NULL in
handle_output_destroy() before we call wlr_layer_surface_v1_destroy(),
which is what calls the appropriate unmap and destroy callbacks.
The former case doesn't cause any problems, since we haven't even
allocated a sway_layer_surface at that point or registered any
callbacks. The latter case, however, currently triggers a crash (#6120)
if a popup is visible, since our popup_handle_unmap() implementation
can't handle a NULL output.
To fix this issue, keep output set until right before we free the
sway_layer_surface. All we need to do is remove some of the cleanup
logic from handle_output_destroy(), since as of commit c9060bcc12
("layer-shell: replace close() with destroy()") that same logic is
guaranteed to be happen later when wlroots calls handle_destroy() as
part of wlr_layer_surface_v1_destroy().
This lets us remove some NULL checks from other unmap/destroy callbacks,
which is nice. We also don't need to check that the wlr_output points to
a valid sway_output anymore, since we unset that pointer after disabling
the output as of commit a0bbe67076 ("Address emersions comments on
output re-enabling") Just to be safe, I've added assertions that the
wlr_output is non-NULL wherever we use it.
Fixes#6120.
The existing code gives this error when compiled with GCC 12:
../sway/server.c: In function ‘server_init’:
../sway/server.c:217:75: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Werror=format-truncation=]
217 | snprintf(name_candidate, sizeof(name_candidate), "wayland-%d", i);
| ^~
../sway/server.c:217:66: note: directive argument in the range [-2147483647, 32]
217 | snprintf(name_candidate, sizeof(name_candidate), "wayland-%d", i);
| ^~~~~~~~~~~~
../sway/server.c:217:17: note: ‘snprintf’ output between 10 and 20 bytes into a destination of size 16
217 | snprintf(name_candidate, sizeof(name_candidate), "wayland-%d", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Because i is never negative, this is a false positive, but it is easy to
change i to unsigned to silence the error.
active_keyboard may be NULL, in which case an invalid pointer could be
passed to wlr_input_method_keyboard_grab_v2_send_modifiers. This
procedure call is unnecessary since wlroots commit 372a52ec "input
method: send modifiers in set_keyboard", so the call can simply be
removed.
Fixes#6836.
Currently, a floating window that's been fullscreened can send us
xdg_toplevel::move, and we'll enter seatop_move_floating, which lets us
drag the surface around while it's fullscreen. We don't want
this--fullscreen surfaces should always be aligned to the screen--so add
the same check that seatop_default already does when entering this mode.
Tested with Weston's weston-fullscreen demo, which sends a move request
if you click anywhere on its surface.