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The surfaces are stored in the bottom-to-top order, as specified
in include/xwayland/xwm.h and expected by
wlr_xwayland_surface_restack().
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X11 clients expect a ConfigureNotify after a ConfigureRequest. If
the compositor/window manager chooses not to honor the request
(e.g. due to the window being maximized), XWayland will not send a
"real" ConfigureNotify event and the window manager is expected to
send a synthetic event instead. Otherwise, the X11 client is left
waiting and may not repaint its window properly.
For comparison, see Openbox's client_configure() or Weston's
weston_wm_window_send_configure_notify().
v2: Move logic to wlr_xwayland_surface_configure()
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This is needed for compositors that want to reserve space for
XWayland panels. Such a feature can be useful in a "transitional"
setup, where only the X11 window manager and compositor is replaced
but other components of an X11 desktop environment are still used.
This change simply reads the X11 property; the compositor is free
to ignore it. Thus, compositors that don't want to support such a
"transitional" feature are not impacted.
v2: Update xwayland_surface_associate()
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The same X11 window can be used multiple times with a different
wl_surface.
Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3570
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This new function replaces wlr_surface_is_xwayland_surface() and
wlr_xwayland_surface_from_wlr_surface().
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xwayland_surface_associate() already does this.
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Make sure xwayland_surface_associate() is not called twice in a
row without a xwayland_surface_dissociate() call in-between.
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If a window is unmapped too quickly, we might receive UnmapNotify before
we get the corresponding wl_surface, which will later lead to
associating the same window twice. To fix this, move the NULL surface
check to xwayland_surface_dissociate(), which makes resetting the
unpaired link and the wl_surface object ID unconditional.
Fixes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3552
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86fc2199f85a ("build: unify naming for HAVE_* defines") has
switched over all other feature defines from HAS_* to HAVE_*, but
missed this one.
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We sometimes used HAS_, sometimes polluted the LIBINPUT_ namespace,
etc.
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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3545
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Rename xwm_map_shell_surface() to xwayland_surface_associate().
This function doesn't actually "map" the surface in Wayland
parlance, the wl_surface may not have a buffer attached yet.
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Instead, move the check to the caller.
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Always keep it initialized, so that we don't have to check for
xsurface->surface_id.
Will help with WL_SURFACE_SERIAL support, which adds a new way for
a surface to be unpaired.
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This allows whatever the user calls from the signal handlers to react to observe
the new state rather than the old, e.g. that a surface is no longer mapped in
the unmap handler.
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Automatically shutdown Xwayland 10s after all X11 clients have
gone away.
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The original commit introduced a bug by transposing the order of
some of the fields in xcb_size_hints_t. Since XCB ICCCM support is
required now, we can just eliminate the duplicate structs.
With minor changes:
- Remove #ifdef HAS_XCB_ICCCM guards
- Fix #includes
- Fix references to local size_hints struct
This reverts commit 12b9b1a4bdf00742cc510c2329c7a66c649b3ab0.
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Now the role precommit hook is called before the commit, not on
wl_surface.commit request, and takes a state which is to be applied.
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A launchee notifies with a "remove"¹ message when done starting up.
Catch these and forward to the compositor. This allows the compositor to
end the startup sequence that might have been started by another
protocol like xdg-activation.
We don't handle other messages since we expect the launcher to use a
wayland protocol like xdg-activation.
While `_NET_STARTUP_ID` helps to associate toplevels with startup-ids
this signals the end of the startup sequence.
1) https://specifications.freedesktop.org/startup-notification-spec/startup-notification-latest.txt
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Instead, use wlr_surface_state.buffer only.
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Currently, upon activating a surface, wlroots restacks it on top of all
others.
This may not necessarily be correct from the calling compositor's point
of view, where having focus may not imply being top-of-stack (e.g.,
focusing a window under an always-on-top window).
In Sway's case, this means that focused tiling windows will always be on
top of floating windows, at least in the order communicated to X11 apps.
This breaks drag-and-drop from a focused tiling X11 window to a floating
X11 window which partially obscures the former.
This is a breaking change; to retain the previous behavior, users that
were calling
wlr_xwayland_surface_activate(xsurface, true);
should now be calling
wlr_xwayland_surface_activate(xsurface, true);
wlr_xwayland_surface_restack(xsurface, NULL, XCB_STACK_MODE_ABOVE);
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This is use for startup notifications per startup-notifiation spec
https://specifications.freedesktop.org/startup-notification-spec/startup-notification-latest.txt
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Allocate window arrays for list property updates on the heap instead.
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This property is present on all modern X11 instances. The nonpresence of
it requires applications to fall back to XQueryTree-based logic to
determine stacking logic (e.g., to determine what surface should get
Xdnd events).
These code paths are effectively untested nowadays, so this makes it
more likely for wlroots to "break" applications. For instance, the
XQueryTree fallback path has been broken in Chromium for the last 10
years.
It's easy enough to maintain this property, so let's just do it.
Fixes #2889.
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We already get the PID from XRes and _NET_WM_PID code can overwrite it
with incorrect data.
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`_NET_WM_PID` is unreliable: it is optional and even if set it may
contain PIDs from sandbox namespaces or remote systems.
Prefer XRes v1.2 QueryClientIds method which returns PIDs as seen by the
Xwayland server.
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wlroots' dependency on this library doesn't change the features
exposed to compositors. It's purely a wlroots implementation detail.
Thus downstream compositors shouldn't really care about it.
Introduce an "internal_features" dictionary to store the status of
such internal dependencies.
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This dependency is already required by many other widely used X11
programs, such as i3, Qt, and other XWMs. So it should be available
on most systems.
X11 support can be pretty broken without xcb-icccm, with focus issues
for instance. Let's just remove this --please-break-my-desktop footgun
option.
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Some X11 clients (e.g. Chromium, sxiv) don't set WM_HINTS. The spec
says:
> Window managers are free to assume convenient values for all fields of the
> WM_HINTS property if a window is mapped without one.
Our wlr_xwayland_icccm_input_model function assumes missing WM_HINTS
means the window doesn't want input, but this is incorrect. Assume the
window wants input unless it explicitly opts-out by setting WM_HINTS.
Closes: https://github.com/swaywm/sway/issues/6107
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Otherwise it gets leaked never to be recovered.
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Previously, the clipboard and primary selections shared the same window.
This was racey, and could have led to pasting failures.
On xfixes selection owner change notification, the logic for requesting
the supported mimetypes of the new owner's selection looks like:
xcb_convert_selection(
xwm->xcb_conn,
selection->window,
selection->atom,
xwm->atoms[TARGETS],
xwm->atoms[WL_SELECTION],
selection->timestamp
);
This means ask the selection owner to write its TARGETS for the
`selection->atom` selection (one of PRIMARY, CLIPBOARD, DND_SELECTION)
to `selection->window`'s WL_SELECTION atom.
However, `selection->window` is shared for both PRIMARY and CLIPBOARD
selections, and WL_SELECTION is used as the target atom in both cases.
So, there's a race when both selections change at the same time.
The CLIPBOARD selection might support mimetypes {A, B, C}, and the
PRIMARY only {A, B}. If the ConvertSelection requests/responses "cross
on the wire", so to speak, wlroots can end up believing that the PRIMARY
selection also supports C.
A Wayland client may then ask for the PRIMARY selection in C format,
which will fail with "convert selection failed".
This commit fixes this by using a separate window for PRIMARY and
CLIPBOARD target requests, so that WL_SELECTION can be used as the
target atom in both cases.
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This makes it consistent with xwm_selection_finish.
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Previously it took a wlr_xwm *, which was a bit surprising in that it
freed members of wlr_xwm *, not just its respective selections.
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wlroots would log "Unhandled NET_WM_STATE property change" log
messages for atoms we know about. Simplify the code structure
and remove these extra messages.
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In certain situations windows can have their input field set to false
but still expect to receive input focus by passively listening to key
presses via a parent window. The ICCCM specification outlines how focus
should be given to clients.
Further reading: https://tronche.com/gui/x/icccm/sec-4.html#s-4.1.7
Relates to #2604
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Developers can use x11trace or similar to analyze the protocol messages.
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The compiler is smarter at figuring out whether a function should be
inlined or not.
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