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wayland: Trigger wl_output updates on actor position changes

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Both notify::position on the surface actor and position-changed on
MetaWindow are listened to, in order to trigger wl_output updates for
wl_surfaces whenever the surfaces move across them.

Both signals are necessary in order to cater for toplevel and subsurface
relocations (Because it's the parent window actor what changes position
in this last case).

Also, shuffle signal disconnection, so each signal goes away with
the object reference held by MetaWaylandSurface.

https://bugzilla.gnome.org/show_bug.cgi?id=782344
This commit is contained in:
Carlos Garnacho 2017-10-06 14:53:16 +02:00
parent c71faffb71
commit 08e4cb54a8
1 changed files with 66 additions and 9 deletions
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75
src/wayland/meta-wayland-surface.c
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@ -182,6 +182,13 @@ static void
surface_actor_allocation_notify (MetaSurfaceActorWayland *surface_actor,
GParamSpec *pspec,
MetaWaylandSurface *surface);
static void
surface_actor_position_notify (MetaSurfaceActorWayland *surface_actor,
GParamSpec *pspec,
MetaWaylandSurface *surface);
static void
window_position_changed (MetaWindow *window,
MetaWaylandSurface *surface);
static void
unset_param_value (GParameter *param)
@ -422,13 +429,6 @@ meta_wayland_surface_destroy_window (MetaWaylandSurface *surface)
MetaDisplay *display = meta_get_display ();
guint32 timestamp = meta_display_get_current_time_roundtrip (display);
g_signal_handlers_disconnect_by_func (surface->surface_actor,
surface_actor_mapped_notify,
surface);
g_signal_handlers_disconnect_by_func (surface->surface_actor,
surface_actor_allocation_notify,
surface);
meta_window_unmanage (surface->window, timestamp);
}
@ -1272,18 +1272,47 @@ meta_wayland_surface_update_outputs (MetaWaylandSurface *surface)
surface);
}
static void
meta_wayland_surface_update_outputs_recursively (MetaWaylandSurface *surface)
{
GList *l;
meta_wayland_surface_update_outputs (surface);
for (l = surface->subsurfaces; l != NULL; l = l->next)
meta_wayland_surface_update_outputs_recursively (l->data);
}
void
meta_wayland_surface_set_window (MetaWaylandSurface *surface,
MetaWindow *window)
{
gboolean was_unmapped = surface->window && !window;
if (surface->window == window)
return;
if (surface->window)
{
g_signal_handlers_disconnect_by_func (surface->window,
window_position_changed,
surface);
}
surface->window = window;
sync_reactive (surface);
sync_drag_dest_funcs (surface);
if (was_unmapped)
g_signal_emit (surface, surface_signals[SURFACE_UNMAPPED], 0);
if (window)
{
g_signal_connect_object (window,
"position-changed",
G_CALLBACK (window_position_changed),
surface, 0);
}
}
static void
@ -1320,6 +1349,15 @@ wl_surface_destructor (struct wl_resource *resource)
if (surface->input_region)
cairo_region_destroy (surface->input_region);
g_signal_handlers_disconnect_by_func (surface->surface_actor,
surface_actor_mapped_notify,
surface);
g_signal_handlers_disconnect_by_func (surface->surface_actor,
surface_actor_allocation_notify,
surface);
g_signal_handlers_disconnect_by_func (surface->surface_actor,
surface_actor_position_notify,
surface);
g_object_unref (surface->surface_actor);
meta_wayland_compositor_destroy_frame_callbacks (compositor, surface);
@ -1348,7 +1386,7 @@ surface_actor_mapped_notify (MetaSurfaceActorWayland *surface_actor,
GParamSpec *pspec,
MetaWaylandSurface *surface)
{
meta_wayland_surface_update_outputs (surface);
meta_wayland_surface_update_outputs_recursively (surface);
}
static void
@ -1356,7 +1394,22 @@ surface_actor_allocation_notify (MetaSurfaceActorWayland *surface_actor,
GParamSpec *pspec,
MetaWaylandSurface *surface)
{
meta_wayland_surface_update_outputs (surface);
meta_wayland_surface_update_outputs_recursively (surface);
}
static void
surface_actor_position_notify (MetaSurfaceActorWayland *surface_actor,
GParamSpec *pspec,
MetaWaylandSurface *surface)
{
meta_wayland_surface_update_outputs_recursively (surface);
}
static void
window_position_changed (MetaWindow *window,
MetaWaylandSurface *surface)
{
meta_wayland_surface_update_outputs_recursively (surface);
}
MetaWaylandSurface *
@ -1381,6 +1434,10 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
"notify::allocation",
G_CALLBACK (surface_actor_allocation_notify),
surface, 0);
g_signal_connect_object (surface->surface_actor,
"notify::position",
G_CALLBACK (surface_actor_position_notify),
surface, 0);
g_signal_connect_object (surface->surface_actor,
"notify::mapped",
G_CALLBACK (surface_actor_mapped_notify),