This is an abstract base class to implement a "client session",
carrying the accounting of the windows, and allowing to serialize/read
their state into a Gvdb table.
Since different windowing backends may require slightly different
data to be saved for each window, this is meant to have windowing-specific
implementations.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3825>
A nick property is a bit similar to the nick of a GObject property, in
that it's a shorter version of the name. It's intended to be used to
store state on the file system, where the state depends on the desktop
environment being used. E.g. gnome-shell sets the name "GNOME Shell",
which is, if no nick is explicitly set, transformed into the nick
"gnome-shell", which will be used for file paths.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3825>
Allow scale-aware Xwayland clients to scale by an integer scale
themselves, instead of letting them render them at 1x scale and then
scaling up the texture, making it look blurry.
When monitor framebuffers are scaled, this special cases Xwayland and
sends output regions in a way that Xwayland think everything is N times
as large as the logical region, where N is the ceil of the max monitor
scale.
This is done by introducing a "stage" vs "protocol" coordinate space for
X11, where the "protocol" coordinate space is "stage" multiplied by a
scaling factor.
Xwayland thus will have its own "effective scale", sent via
wl_output.scale. The effective Xwayland scale is also used for the
internal MetaWaylandSurface scale internally, unless there is a viewport
dst size set on the same surface, in which case the scale is still set
to 1, to not interfere with wp_viewport semantics.
We're guarding this behind a new experimental feature
"xwayland-native-scaling", which can only come into effect when enabled
together with "scale-monitor-framebuffer".
[v2]:
Move stage_to_protocol/protocol_to_stage to generic window class.
This means parts that aren't aware of any windowing system specific
logic, only that coordinates originate from there for a given window,
can still get their coordinates properly handled.
In particular, this means coordinates from IBus that originates from the
client, can be scaled properly when that client is using X11.
Also make them properly introspected.
[v3]:
Split up coordinate transform API.
Make it one that takes a MtkRectangle, and another that takes a point.
This means the rounding strategy becames explicit when transforming a
point, while when it's a rectangle, it's still always "grow".
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3567>
Toplevels get the main monitor from their MetaWindow and have no main
monitor when the toplevel is not mapped.
Subsurfaces get the main monitor from their parent surface.
DnD and cursors get the main monitor from the current cursor position no
matter if the cursor is actually being shown or not.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3941>
This leads to possibly missed key release events being propagated down to
clients, and in the case of X11 clients, to stuck keys e.g. after switching
workspace with Ctrl+Alt+Left/Right and ending up with a X11 client focused.
Fixes: 11a4d56185 ("keybindings: Send trigger when a key accelerator is deactivated")
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3935>
Add a new service client type for a filechooser portal client, and
expose the x11_interop protocol to it.
This will be used to make Nautilus a file chooser portal implementation.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3694>
Simply to make it clear that the renamed function is specific to a
particular X11 initialization mode (mandatory Xwayland), put that in the
name, so that it's easier to understand when this function is relevant.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3329>
by executing `global.context.get_debug_control().exported = true`.
This makes it possible to get access to the debug service without having
to start with `--enable-debug`.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3902>
Having an always-on-top window affects focus granting logic if the
to be showing window overlaps with any of them. Instead of triggering
the focus denying logic if a new window ever so slightly touches an
always-on-top window to only triggering if it's covered more than 60% by
always-on-top windows.
This is intended to make using always-on-top windows a bit less annoying
and not cause as many unintended focus-on-map denials.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3879>
When we show a window, we'll check if it overlaps with an existing
always-on-top window with the intention to deny focus. However, we did
this potentially before having placed the window, meaning we effectively
checked as if it was placed at (0, 0), which created unexpected results.
Instead check the overlap state after placing. A window placement test
case is added to verify this works as expected.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3879>
Replace a boolean argument and a temporary MetaWindow struct field with
a `MetaPlaceFlag` passed where relevant. This includes
`meta_window_move_resize_internal()` and `meta_window_constrain()`, as
placement may happen during constraining, and also
`meta_window_force_placement()`.
The struct field (denied_focus_and_not_transient) was only ever set in
meta_window_show(), before meta_window_force_placement(), and
immediately unset as a side effect of that. In .._show() we'll always
force placement if the window wasn't already placed, and in
meta_window_constrain(), we'd only ever call meta_window_place() if the
window wasn't already placed, meaning the variable would only ever be
relevant during `meta_window_show()`. Having it as a flag makes that
relationship and temporary state clearer.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3879>
The function checking whether a 'always-on-top' window covers the
showing window now has that in the name, to make it more obvious. That
function was also changed to use the more common way of iterating a
list, and now uses auto cleanup pointers for the list.
The condition itself was updated to follow the current coding style.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3879>
This avoids the following critical warning happening sometimes when a
Wayland client exits taking all its window with it in an arbitrary
order:
CRITICAL: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3870>
When a transient window becomes transient, check if the parent is
sticky, and if it is, make the transient sticky as well. This handles
situations where e.g. a utility dialog (such as search and replace) is
opened on a sticky window, also making the utility dialog sharing the
same stickyness state.
This is also more in line with the semantics of making a window sticky,
where transient would implicitly become sticky as a side effect.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3870>
If a transient window is sticky (visible on all workspaces) and it gets
activated, we'd call move_worskpace() which would effectively unstick
it, which is rather unexpected. It'd also effectively unstick its parent
as well, due to moving a transient window also moves its descendants and
ascendants.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3870>
This mapper hooks into CLUTTER_BUTTON_PRESS/RELEASE events with a
clutter button of zero but a nonzero evcode (e.g. BTN_STYLUS).
It then looks up the available button actions and implements
switch-monitor and keybindings using the MetaTabletActionMapper parent
class.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3649>
Stylus actions that don't map into LMR or back/forward are now created
as a clutter button event with a button number of zero. Nothing is
actually done with those events for now, they're just discarded later.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3649>
This is prep work for using the same functionality for tablet tools as
well. The new MetaTabletActionMapper takes care of the event bubbling
via the device-added/removed and input-event signals and provides the
helper functions to cycle outputs and/or emulate keybindings.
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3649>
Allow compositing in a linear color space and do so either when forcing
it via the debug controls D-Bus API, or when the experimental HDR mode
is enabled.
This relies on paint nodes etc to actually transform everything into the
linear target color space, which isn't done yet, so enabling it right
now will cause a broken result. Yet, introduce this now, so that
painting can be fixed piece by piece.
Linear blending is automatically enabled on monitors where HDR is
enabled, as this makes it possible to use an linear color space when
blending content from different color spaces with different transfer
functions.
Linear blending requires extra precision, i.e. 16 bit per channel
in the intermediate buffer due how the values are distributed,
so only enable the experimental HDR mode if the Cogl context supports
half float formats.
By default, no intermadiate linear offscreen framebuffer is used.
To test, do e.g.
./tools/debug-control.py --toggle ForceLinearBlending
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3433>
If the titlebar of a window has been moved above the screen by a user
via an unconstrained move, then any constrained user resize following
this move will cause the window to jump below the top of the screen or
cause other glitchy behavior.
This commit removes the constraint that the titlebar of a window must be
below the top of the screen for any resize that is both (1) triggered by
a user and (2) is a resize that affects only the left, right, or bottom
edges of the window. This allows users to move a window partially above
the screen and then resize the window to be wider or resize the bottom
edge of the window to make it taller or shorter.
Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1206
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3764>
