There should be no circumstances where an implicit grab is requested but
no focus exists, there's however circumstances (like windowing grabs taking
input to a different window) where we might get implicit grabs being undone
when then new window didn't create a focus for the pointer itself.
Only if they fall outside the grab widget, in that case the widget holding
the implicit grab won't be receiving events anymore, so we can just undo
it.
We now rely on toplevels receiving and forwarding all the events
the windowing should be able to handle. Event masks are no longer a
way to determine whether an event is deliverable ot a widget.
Events will always be delivered in the three captured/target/bubbled
phases, widgets can now just attach GtkEventControllers and let those
handle the events.
Those are now needless and wrong, as we get guarantees that handled
events will contain widget-relative coordinates. A side effect is
that these events are very possibly not explicitly sent to the
GdkWindow that implementations expect, any extra checks performed
through gtk_gesture_set_window() will be wrong, so the function has
been dropped entirely.
And refurbish cursor management to be set on the GtkWidget. The
input window is not needed anymore to receive events either.
This is no longer set through the GdkWindow, so use the private
GtkWidget API.
The event shall no longer be "directed" to the event window, but the
widget. Getting a enter/leave event is enough now to know whether the
pointer is inside or outside the widget.
Unlike GTK+ grabs which are global to all/one device, the implicit grab
is per focus, which means each may have implicit grabs on different or
the same widget.
Implement target finding per-pointer/touchpoint through GtkPointerFocus and
_gtk_toplevel_pick(). Focus changes are handled through the emission of
crossing events between the old target and the new one.
Each toplevel will keep its own tracking of the current ongoing foci,
add the plumbing that will allow to create/update/remove those as they
come and go.
These objects (tied to a toplevel) track the focus of a pointer/touchpoint.
The info in these basically consists of current toplevel coordinates and the
current target widget.
This function will be useful in other places, such as determining the
widgets that must receive crossing events after pointer picking points
to another widget.
The :last-child selector supposed to reset the border was
overridden by the :hover selector. This is fixed by moving the
:last-child selector after the overriding one.
Thanks to Sebastian Keller for spotting.
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=779078.
Fix the sizing and spacing, blue tags for the bright variant,
similar to what gnome-documents was shipping, and inverted gray
tags for the dark variant, not vanishing on hover.
POLICY_AUTOMATIC means scrollbars are only shown when needed, i.e. when
the size of the window is not large enough to show the entire child. So
when measuring the preferred size, such scrollbars should be ignored.
But measure() added size for *any* non-overlay scrollbar of the opposite
orientation, e.g. for horizontal size, it added the width of vscrollbar.
So we requested for child + bar, & having enough for child meant that the
policy hid the bar, leaving extra space empty below/right of the child.
Fix this by only adding size for such bars if they use POLICY_ALWAYS.
https://bugzilla.gnome.org/show_bug.cgi?id=778853
• Only calculate the specified dimension – rather than measuring both &
discarding the other (which will often be recalculated right after)
• Only measure a given child scrollbar if it may be visible, not always
• Move variables into narrowest scopes & otherwise improve readability
https://bugzilla.gnome.org/show_bug.cgi?id=778853
The user data passed when exporting a Wayland window was supposed to be
freed using the destroy_func, as is commonly done. This was previously
broken, as the user data was just NULL:ed when exported, and only
actually destroyed when unexporting before having exported.
While e016d9a5db fixed this, it introduced
a regression, as GtkWindow was nice enough to free the memory anyway
after having received the exported handle, causing it now to double
free.
https://bugzilla.gnome.org/show_bug.cgi?id=782109
Otherwise in GC-ed environments the `g_source_remove` call during
disposal might be called on an already removed source, which results in
unnecessary console output.
https://bugzilla.gnome.org/show_bug.cgi?id=778301
