Add a gtk_shell.set_startup_id request, so the application can communicate
to the compositor the startup id that it received through the
DESKTOP_STARTUP_ID envvar, or other means.
When running with a Wayland compositor which doesn't support the
xdg_shell interface, gtk+ will segfault while trying to access the
corresponding wl proxy.
Check for xdg_shell support and do not use Wayland if not present, so
that it can fallback to X11, hoping that Xwayland is usable.
Bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=762258
we use to animate "all" in the transition, this seems to trigger
some weird gtk sizing issue, restricting the transition to just
the needed properties fixes.
We were notifying when an unmount operation was performed. However,
creating notifications from the gtk+ library is not that expected, and
makes notification handling difficult to do from the application point
of view since we cannot dismiss those notifications.
This cause issues like notifications of unmount drives stay there after
a system reboot, which confuses the user.
Instead of that, remove the notification handling for mount operations
on gtk+ and instead create a new signal on the gtkplacessidebar in order
to inform applications using it about an operation about to start.
Only drawback about this is that the GtkFileChooser loses its
notifications when unmounting, that although we could use the new signal
to do it, we actually don't want to notify from any part of gtk+ for
now.
https://bugzilla.gnome.org/show_bug.cgi?id=753351
Some of the translated strings in the cups printbackend are short
and generic and might occur in other contexts. Give them disambiguating
message contexts to avoid translation problems.
There is no point in attaching and then committing the same buffer if
there was no damage. This will also make us do less unnecessary backfill
read backs, for the cases where we paint with an empty paint region.
https://bugzilla.gnome.org/show_bug.cgi?id=762120
If a after-paint was scheduled but nothing was painted, for example when
the it was scheduled by a subsurface wanting to update its position,
we'd still try to read back from the backfill cairo surface and update
the committed cairo surface reference even though no buffer was
attached.
Fix this by adding a new state, 'pending_buffer_attached', which is only
true if a buffer was attached during frame. Only when this is true will
the backfill be read back and the committed cairo surface reference be
updated.
https://bugzilla.gnome.org/show_bug.cgi?id=762120
