Now we keep track of serial->state association and we discard the states
that the client ignored.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>

We were checking against the pending size, which lead some clients
(simple-egl) to crash because they sent a buffer before acknowledging
the latest configure event.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Tested-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Tested-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Tested-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>

When switching a state twice in a row, we were overwriting the old value
without setting it back, sending a wrong state to the client.

Now we update our requested state, then check if we need to schedule a
configure event, if we have one scheduled already or even if we can
cancel it.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

No need to add protocol/, as it's already handled by an explicit
compiler include path.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Dima Ryazanov <dima@gmail.com>

Fixes:

implicit conversion from enumeration type '...' to different
enumeration type '...' [-Wenum-conversion]

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

Even if the surface size is already correct, we need to store the
configured size in case some other state change triggers a configure
event.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Arnaud Vrac <avrac@freebox.fr>

This way we are sure the compositor is aware of a surface when we
forward a request for said surface.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>

Instead we store the buffer move and just use it when the signal is
fired.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>

libweston-desktop is an abstraction library for compositors wanting to
support desktop-like shells.

The API is designed from xdg_shell features, as it will eventually be
the recommended shell for modern applications to use.
In the future, adding new shell protocols support will be easier, as
limited to libweston-desktop.

The library versioning is the same as libweston. If one of them break
ABI compatibility, the other will too.

The compositor will only ever see toplevel surfaces (“windows”), with
all the other being internal implementation details.
Thus, popups and associated grabs are handled entirely in
libweston-desktop.
Xwayland special surfaces (override-redirect) are special-cased to a
dedicated layer, as the compositor should not know about them.

All the shell error checking is taken care of too, as well as some
specification rules (e.g. sizes constraint for maximized and fullscreen
surfaces).

All the compositor has to do is define a few callbacks in the interface
struct, and manage toplevel surfaces.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Giulio Camuffo <giulio.camuffo@kdab.com>

Differential Revision: https://phabricator.freedesktop.org/D1207