Commit Graph

1492 Commits

Author SHA1 Message Date
Jonas Dreßler
79d981aac9 wayland/actor-surface: Factor in mapped clones in mapped check
We started listening to notify::mapped with commit
5eb5f72434 in order to emit
wl_surface.leave events consistently when a surface gets hidden. This
caused a problem with the ClutterClones used in the overview, since
those temporarily map and unmap the windows for painting, spamming
wl_surface.leave and enter events to all surfaces.

We can easily fix that by also treating mapped clones as mapped, which
means the surface should also be on a wl_output when the overview is
shown.

Fixes https://gitlab.gnome.org/GNOME/mutter/-/issues/1141

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1235
2020-05-26 14:54:57 +02:00
Jonas Dreßler
e68bb27df2 wayland/actor-surface: Don't listen to notify::position signal
We started listening to "notify::position" on surface actors with commit
08e4cb54. This commit was done to fix a regression from commit cf1edff9,
which forgot to handle some cases like the actual WindowActor and not
the SurfaceActor (which is a child of the WindowActor) moving (that was
fixed by listening to MetaWindows "position-changed" signal). Also that
commit introduced meta_wayland_surface_update_outputs_recursively(),
which updates the outputs of all (sub-)surfaces in case any position
changed and made sure subsurfaces also get their outputs updated in case
the parent actor moved.

Connecting to the "notify::position" signal, which the above commit also
did is now superflous though because position changes will queue a
relayout and the actors allocation will change during the next
allocation cycle, notifying the "allocation" property which we also
listen to.

So save some resources and stop listening to that signal.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1235
2020-05-26 14:52:15 +02:00
Jonas Ådahl
7343b8d817 wayland/dma-buf: Make gbm_bo import function better named
It imports a DMA buffer as a gbm_bo, but only if it can be used to scan
it out, so name it import_scanout_gbm_bo().

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1261
2020-05-21 23:59:56 +00:00
Jonas Ådahl
dbf47b652e wayland/dma-buf: Handle failing to import scanout DMA buffer
A DMA buffer might not be able to scanout, and in that case the import
with GBM_BO_USE_SCANOUT will fail. Handle that by failing to scanout,
effectively falling back to compositing.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1261
2020-05-21 23:59:56 +00:00
Jonas Dreßler
bc0b9f7628 window: Use pid_t for get_client_pid() vfunc
It makes sense to use pid_t when getting the PID since that will work on
all platforms and architectures.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1180
2020-05-21 23:10:23 +00:00
Jonas Dreßler
dac09a8e23 window: Use client PID for meta_window_get_pid()
The shell uses the PID of windows to map them to apps or to find out
which window/app triggered a dialog. It currently fails to do that in
some situations on Wayland, because meta_window_get_pid() only returns a
valid PID for x11 clients.

So use the client PID instead of the X11-exclusive _NET_WM_PID property
to find out the PID of the process that started the window. We can do
that by simply renaming the already existing
meta_window_get_client_pid() API to meta_window_get_pid() and moving
the old API providing the _NET_WM_PID to meta_window_get_netwm_pid().

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1180
2020-05-21 23:10:23 +00:00
Robert Mader
3c068ef135 wayland/surface: Simplify state cleanup after merge
Instead of manually freeing things, use the existing helper function.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1232
2020-05-14 00:34:49 +02:00
Carlos Garnacho
2becb3dd29 wayland: Add support for wayland-protocols primary selection protocol
This protocol was added some time ago. Supporting it fell through the
cracks. Add new data device/source/offer implementations for it,
interoperation between primary selection protocols (and X11 primary
selection for that matter) comes for free.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/943

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1255
2020-05-13 18:27:46 +02:00
Carlos Garnacho
037b68ab8e wayland: Rename gtk primary protocol files to "legacy"
We want to make room for the wayland-protocols primary selection
protocol. Rename our private protocol as "legacy".

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1255
2020-05-13 18:18:14 +02:00
Carlos Garnacho
b45d5ef3f5 wayland: Send primary offer to all data devices from the same client
Make the data device track the keyboard focus, and use that list to
forward the primary selection to all data devices from the same
client.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1253
2020-05-13 14:44:55 +00:00
Carlos Garnacho
7e4e371466 wayland: Send clipboard offers to all data devices from the same client
Make the data device track the keyboard focus, and use that list to
forward the clipboard selection to all data devices from the same
client.

This is however not the case of DnD data offers, as the semantics
of multiple in-flight offers is unclear.

Fixes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1250

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1253
2020-05-13 14:44:55 +00:00
Jonas Dreßler
d9fb6b5ca2 wayland/surface: Connect to "output-destroyed" in surface_entered_output
Since we're now connecting to one more signal of MetaWaylandOutput, keep
signal connections in one place and move connecting the
"output-destroyed" signal to surface_entered_output() and disconnecting
it to surface_left_output().

This also allows us to use the "outputs_to_destroy_notify_id" as a
simple set and rename it to "outputs".

While at it, also use g_hash_table_destroy() instead of
g_hash_table_unref() since destroy is more clear than unref and does the
same thing in this case.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1230
2020-05-11 18:06:58 +00:00
Jonas Dreßler
696b534570 wayland/surface: Send enter event when a client binds to wl_output late
When hotplugging a new monitor, we recreate all the MetaWaylandOutputs
and need to emit leave events to the surfaces for the old wl_outputs and
enter events for the newly created ones.

There's a race condition though: We might update the monitors a surface
is on (and thus emit enter/leave events for the wl_outputs) before the
Wayland client is registered with the new wl_output (ie. the
bind_output() callback of MetaWaylandOutput was called), which means we
don't send an enter event to the client in surface_entered_output().
Since MetaWaylandSurface now has the MetaWaylandOutput in its outputs
hashtable, it thinks the client has been notified and won't send any
more enter events.

To fix that, make MetaWaylandOutput emit a new signal "output-bound"
when a client bound to the output and make all surfaces which are on
that output listen to the signal. In the signal handler compare the
newly added client to the client the surface belongs to, and if it's the
same one, send an enter event to that client.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1230
2020-05-11 18:06:58 +00:00
Jonas Dreßler
38db4a5a65 wayland/wl-output: Emit "output-destroyed" signal earlier
The "output-destroyed" signal is used for notifying MetaWaylandSurfaces
that an output they are shown just got invalid (for example because a
monitor hotplug happened).

While we delay the destroying of outputs by 10 seconds since commit
1923db97 because of a race-condition, it doesn't make sense to wait 10
seconds until we let surfaces know that an output was destroyed.

So move the emission of the "output-destroyed" signal to
make_output_inert(), which is called before we start the 10 seconds
delay.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1230
2020-05-11 18:06:58 +00:00
Olivier Fourdan
5d58156134 wayland/keyboard: Chain finalize up to the parent class
Finalize the parent class of the Wayland keyboard object.

Suggested-by: Marco Trevisan (Treviño) <mail@3v1n0.net>
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1238
2020-05-07 10:27:32 +00:00
Jonas Dreßler
988da215c8 wayland/keyboard: Use MetaAnonymousFile to share keymap files
Since protocol version 7 clients must use MAP_PRIVATE to map the keymap
fd, that means we can use memfd_create() to create the fd by using
meta_anonymous_file_open_fd() with META_ANONYMOUS_FILE_MAPMODE_PRIVATE,
for older versions we use META_ANONYMOUS_FILE_MAPMODE_SHARED to be
compatibile with MAP_SHARED.

Pretty much all of this code was written for Weston by Sebastian Wick,
see https://gitlab.freedesktop.org/wayland/weston/merge_requests/240.

Co-authored-by: Sebastian Wick <sebastian@sebastianwick.net>

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/issues/1734

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1012
2020-04-21 17:52:08 +02:00
Carlos Garnacho
b7366b5b53 wayland: Drop unused struct variable
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:51:00 +02:00
Carlos Garnacho
5e8d8b9ade wayland: Move the primary data device manager to its own file
Instead of having everything clumped at MetaWaylandDataManager,
split the primary selection to its own struct. This manager is
handled separately from wl_data_device_manager and other selection
managers, so they would be able to interoperate between them, even.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:50:57 +02:00
Carlos Garnacho
4726f3d5d3 wayland: Move primary data offers to their own file
Following the MetaWaylandDataOffer split.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:46:23 +02:00
Carlos Garnacho
91ef7515de wayland: Move MetaWaylandDataOffer to its own file
This is still an openly defined struct, as we will need accessed
by "subclasses". Same principle applies than with the
MetaWaylandDataSource refactor, this is not meant to introduce
functional changes, so just go with it.

On the bright side, the interactions are now clearer, so it could
be made saner in the future.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:46:23 +02:00
Carlos Garnacho
317f6c0910 wayland: Move MetaWaylandDataSourcePrimary to its own file
Following the MetaWaylandDataSource split, this goes next.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:46:23 +02:00
Carlos Garnacho
6a3d521466 wayland: Split MetaWaylandDataSource into a separate file
The split wasn't 100% clean, and some extra private API had to be
added for it (but well, looking at the API, it's already evident
there's a cleanup/streamlining task due). This is meant to be a
refactor with no functional changes, so just go with it.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1193
2020-04-17 00:46:21 +02:00
Carlos Garnacho
1363246d44 wayland: Rely on MetaSelection::owner-changed for .selection event emission
We already have a signal callback that translates selection ownership changes to
data_device/primary .selection events. Given both will be run when a data source
is being replaced, and this event emission being deleted is kinda short sighted
in that in only knows about Wayland, rely entirely on MetaSelection::owner-changed
emission.

Fixes spurious .selection(null) events being sent when a compositor-local source
takes over the selection without the focus changing (eg. screenshot to clipboard).

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1160

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1204
2020-04-16 22:25:00 +00:00
Carlos Garnacho
0b6560fac4 wayland: Do not cancel old data source when setting new selection
This is taken care already by the MetaSelection machinery, by
deactivating the previous selection source when setting a new one.
That works across X11 and internal selection sources. This
only works when replacing one wayland source with another, and
actually results in doubly .cancelled events due to the other
paths.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1177

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1203
2020-04-16 19:27:51 +00:00
Carlos Garnacho
d4c3870286 wayland: Shuffle wl_data_source.cancelled version checks on DnD
We are meant to send a .cancelled event after the drop is performed
in certain situations, but only for version>3 clients. Since this is
all version 3 business, only set the drop_performed flag for v3
clients. This drops the need to perform version checks at the time
of cancelling (which is present for other usecases in v1).

Fixes emission of wl_data_source.cancelled for v1 clients.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1177

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1203
2020-04-16 19:27:51 +00:00
Jonas Ådahl
ff7a42b8bc wayland: Add API to acquire a CoglScanout from a surface
This will check whether the current backing buffer is compatible with
the primary plane of the passed CoglOnscreen. Since this will extend the
time before a buffer is released, the MetaWaylandBufferRef is swapped
and orphaned if a new buffer is committed before the previous one was
released. It'll eventually be released, usually by the next page flip
callback.

Currently implemented for EGLImage and DMA-BUF buffer types.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 15:05:52 +02:00
Jonas Ådahl
4b1805c306 wayland/dma-buf: Handle getting dma-buf from detached buffer handle
We might still have a MetaWaylandBuffer for a wl_buffer that was
destroyed. Handle trying to fetch the MetaWaylandDmaBufBuffer from such
a buffer gracefully.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 15:05:52 +02:00
Jonas Ådahl
03c00e4944 wayland/dma-buf: Minor style fix
Indentation was off.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 15:05:52 +02:00
Jonas Ådahl
cb05b16414 wayland/dma-buf: Don't advertise modifier support by default
Advertising support for modifiers means we will most likely not not be
able to scan out client buffers directly, meaning it just as likely that
we won't be able to scan out even fullscreen windows without atomic KMS.

When we have atomic support, we should advertise support for modifiers
if atomic is used to drive the CRTCs, as we by then can check whether we
can scan out directly, place in an overlay plane, etc.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 15:05:52 +02:00
Jonas Ådahl
f8ee974628 wayland/buffer-ref: Add helpers for use count tracking
https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 14:08:19 +02:00
Jonas Ådahl
f36120757f wayland: Make MetaWaylandBufferRef reference counted
So that we can have a more dynamic ownership.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 14:08:19 +02:00
Jonas Ådahl
47002bf0cd wayland/surface: Put buffer reference on heap
Currently a buffer use count always reaches zero before it is replaced.
This is due to the fact that at the point a new buffer is attached, the
last potential user releases it (the stage) since the currently
displayed frame has a composited copy of the buffer.

This may however change, if a buffer is scanned out directly, meaning it
should not be released until the page flip callback is invoked.

Prepare for this by making the buffer reference a heap allocated struct,
enabling us to keep a pointer to it longer than the buffer is attached.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/798
2020-04-16 10:43:34 +02:00
Olivier Fourdan
5b30a52bbd wayland: preserve xkb_state on VT switch
On VT switch, the devices are removed, which means for Wayland disabling
the keyboard.

When the keyboard is disabled, the associated `xkb_state` is freed and
recreated whenever the keyboard is re-enabled when switching back to the
compositor VT.

That means the `xkb_state` for Wayland is lost whereas the same for
clutter is kept, which causes to a discrepancy with locked modifiers on
VT switch.

To avoid that issue, preserve the XKB info only to dispose it when the
keyboard is eventually finalized.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/344
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1185
2020-04-08 13:16:25 +00:00
Carlos Garnacho
ba3417667f wayland/xdnd: Add error traps around Xdnd* IPC
Make all of them spew criticals, except for XdndLeave as it's feasible
to expect the window we are sending the event to did disappear in the
way (eg. if the window is destroyed while the DnD operation is ongoing
and the pointer is over the window).

Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2590

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1184
2020-04-07 18:08:03 +00:00
Robert Mader
dbe919ef92 wayland/surface: Check for surface role in meta_wayland_surface_get_window()
The function can get called without valid surface role, e.g. from
`zwp_xwayland_keyboard_grab_manager_grab()`.

Debugged by @piegamesde

Fixes https://gitlab.gnome.org/GNOME/mutter/-/issues/1147
2020-03-30 16:08:13 +02:00
Christian Rauch
2907ee93cc wayland/pointer-constraints: Fix typo
https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1163
2020-03-29 19:48:33 +01:00
Carlos Garnacho
bb5ea0580f wayland: Translate delete-surrounding properly to protocols
IBusInputContext/ClutterInputFocus/GtkIMContext all go for offset+len
for their ::delete-surrounding signals, with offset being a signed int
(neg. to delete towards left of selection, pos. to delete towards right
of selection) and len being an unsigned int from the offset (and
presumably, skipping the current selection).

The text-input protocols however pass in this event two unsigned integers,
one being the length of text to delete towards the left of the selection,
and another the length of text to delete towards the right of the selection.

To translate properly these semantics, positive offsets shouldn't account
for before_length, and negative offset+len shouldn't account for after_length.
The offset/length approach may of course represent deletions that are
detached from the current cursor/selection, we simply delete the whole range
from the cursor/selection positions then.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/517
2020-03-29 11:37:27 +00:00
Takao Fujiwara
2cfdbbd730 clutter: Enable negative offsets in delete surrounding text
The input method can assign a negative value to
clutter_input_method_delete_surrounding() to move the cursor to the left.
But Wayland protocol accepts positive values in delete_surrounding() and
GTK converts the values to the negative ones in
text_input_delete_surrounding_text_apply().

https://gitlab.gnome.org/GNOME/mutter/issues/539
2020-03-29 11:37:27 +00:00
Jonas Ådahl
ac01e69a67 window-wayland: Don't use grab op for some other window when resizing
When resizing a window interactively, we'll set a grab operation and a
grab window, among other things. If we're resizing (including setting
initial size, i.e. mapping) another window, that didn't change position,
don't use the gravity of the grab operation when resizing our own
window.

This fixes an issue with jumpy popup position when moving a previously
mapped gtk popover.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/999
2020-03-26 17:44:09 +01:00
Jonas Ådahl
238e41d493 cogl: Install cogl-trace.h and include from cogl.h
This is so that cogl-trace.h can start using things from cogl-macros.h,
and so that it doesn't leak cogl-config.h into the world, while exposing
it to e.g. gnome-shell so that it can make use of it as well. There is
no practical reason why we shouldn't just include cogl-trace.h via
cogl.h as we do with everything else.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/1059
2020-03-26 09:05:38 +01:00
Carlos Garnacho
8592a8591b wayland: Handle NULL preedit text
The preedit text may be NULL (eg. when unsetting it). This started
causing crashes since commit db9b60cc63, duh.

Fixes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1132
2020-03-24 16:07:44 +00:00
Carlos Garnacho
db9b60cc63 wayland: Represent preedit string cursor offset in bytes
Both IBus and ClutterInputFocus work in character offsets for the cursor
position in the preedit string. However the zwp_text_input protocol does
define the preedit string cursor offset to be in bytes.

Fixes client bugs in representing the caret within the preedit string,
as we were clearly giving the wrong offset.

Fixes: https://gitlab.gnome.org/GNOME/gtk/issues/2517

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1132
2020-03-17 22:15:52 +00:00
Jonas Ådahl
fa74da0039 wayland/window: Ignore state changes for popups
We send configure events for state changes e.g. for `appears-focused`,
etc. What we don't want to do is to do this for popup windows, as in
Wayland don't care about this state.

When the focus mode was configured to "sloppy focus" we'd get
`appears-focused` state changes for the popup window only by moving the
mouse cursor around, and while a popup may care about focus, it does not
care about related appearance, as there is no such state in xdg_popup.

What these state changes instead resulted in was absolute window
configuration events, intended for toplevel (xdg_toplevel) windows. In
the end this caused the popup to be positioned aginst at (0, 0) of the
parent window, as the assumptions when the configuration of the popup
was acknowledged is that it had received a relative position window
configuration.

Fix this by simply ignoring any state changes of the window if it is a
popup, meaning we won't send any configuration events intended for
toplevels for state changes. Currently we don't have any way to know
this other than checking whether it has a placement rule. Cleaning up
MetaWindow creation is left to be dealt with another day.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/1103

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1122
2020-03-17 21:59:02 +00:00
Jonas Ådahl
512bb7d1cd wayland: Don't crash when trying to fullscreen on inert wl_output
There is a race where an output can be used as a fullscreen target, but
it has already been removed due to a hotplug. Handle this gracefully by
ignoring said output in such situations.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1120
2020-03-11 14:37:09 +00:00
Sebastian Keller
509e9ca5a0 xwayland: Fix mime type atom list leak on DnD with more than 3 types
Found using the clang static analyzer

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1117
2020-03-11 03:21:36 +01:00
Olivier Fourdan
0b102afb53 xwayland: Update regions on texture updates
For X11 clients running on Wayland, the actual texture is set by
Xwayland.

The shape, input and opaque regions, however are driven by X11
properties meaning that those may come at a different time than the
actual update of the content.

This results in black areas being visible at times on resize with
Xwayland clients.

To make sure we update all the regions at the same time the buffer is
updated, update the shape, input and opaque regions when the texture is
committed from when the Xwayland surface state is synchronized.

That fixes the remaining black areas being sometimes visible when
resizing client-side decorations windows on Xwayland.

Closes: https://gitlab.gnome.org/GNOME/mutter/issues/1007
https://gitlab.gnome.org/GNOME/mutter/merge_requests/1091
2020-03-10 14:52:26 +01:00
Jonas Ådahl
6cd0aa429f window: Force placement for first placement rule
If we don't force the placement, we enter the constrain machinery with
the position (0, 0), meaning we always get the "current work area" setup
to correspond to whatever logical monitor was at that position.

Avoid this by doing the same as "meta_window_force_placement()" and set
"window->calc_placement" to TRUE while move-resizing, causing the
move-resize to first calculate the initial position.

Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/1098

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1110
2020-03-06 17:28:09 +01:00
Jonas Ådahl
f97804f4f4 wayland/xdg-shell: Add support for explicit popup repositioning
This commit completes the implementation of `xdg_wm_base` version 3,
which introduces support for synchronized implicit and explicit popup
repositioning.

Explicit repositioning works by the client providing a new
`xdg_positioner` object via a new request `xdg_popup.reposition`. If the
repositioning is done in combination with the parent itself being
reconfigured, the to be committed state of the parent is provided by the
client via the `xdg_positioner` object, using
`xdg_positioner.set__parent_configure`.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/705
2020-02-29 21:01:50 +00:00
Jonas Ådahl
5c37f5104e wayland/xdg-shell: Add support implicit popup moving
This sets the `is_reactive` flag on the window placement rules, causing
the popups to be reconfigured as they are affected by environmental
changes, such as the parent moving in a way making the popup partially
offscreen.

As with synchronization, the implementation is dormant, as the
version of the advertised global isn't bumped yet, as the new protocol
version is not yet fully implemented.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/705
2020-02-29 21:01:50 +00:00
Jonas Ådahl
d08a8de265 window: Implement asynchronous popup moving
This commits adds support on the MetaWindow and constraints engine side
for asynchronously repositioning a window with a placement rule, either
due to environmental changes (e.g. parent moved) or explicitly done so
via `meta_window_update_placement_rule()`.

This is so far unused, as placement rules where this functionality is
triggered are not yet constructed by the xdg-shell implementation, and
no users of `meta_window_update_placement_rule()` exists yet.

To summarize, it works by making it possible to produce placement rules
with the parent rectangle a window should be placed against, while
creating a pending configuration that is not applied until acknowledged
by the client using the xdg-shell configure/ack_configure mechanisms.

An "temporary" constrain result is added to deal with situations
where the client window *must* move immediately even though it has not yet
acknowledged a new configuration that was sent. This happens for example
when the parent window is moved, causing the popup window to change its
relative position e.g. because it ended up partially off-screen. In this
situation, the temporary position corresponds to the result of the
movement of the parent, while the pending (asynchronously configured)
position is the relative one given the new constraining result.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/705
2020-02-29 21:01:50 +00:00