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window-actor: Add 'damaged' signal

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Make it possible to listen for damage on a window actor. For X11, the
signal is emitted when damage is reported; for Wayland, it is emitted
when any of the surfaces associated with the window is damaged.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/752
This commit is contained in:
Jonas Ådahl 2019-08-26 16:09:53 +03:00
parent 6968f17f3f
commit ad138210b3
3 changed files with 49 additions and 3 deletions
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2
src/compositor/meta-window-actor-private.h
View File

@ -93,4 +93,6 @@ void meta_window_actor_set_geometry_scale (MetaWindowActor *window_actor,
int meta_window_actor_get_geometry_scale (MetaWindowActor *window_actor);
void meta_window_actor_notify_damaged (MetaWindowActor *window_actor);
#endif /* META_WINDOW_ACTOR_PRIVATE_H */

23
src/compositor/meta-window-actor.c
View File

@ -115,6 +115,7 @@ enum
{
FIRST_FRAME,
EFFECTS_COMPLETED,
DAMAGED,
LAST_SIGNAL
};
@ -219,6 +220,20 @@ meta_window_actor_class_init (MetaWindowActorClass *klass)
NULL, NULL, NULL,
G_TYPE_NONE, 0);
/**
* MetaWindowActor::damaged:
* @actor: the #MetaWindowActor instance
*
* Notify that one or more of the surfaces of the window have been damaged.
*/
signals[DAMAGED] =
g_signal_new ("damaged",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
pspec = g_param_spec_object ("meta-window",
"MetaWindow",
"The displayed MetaWindow",
@ -1498,6 +1513,8 @@ meta_window_actor_process_x11_damage (MetaWindowActor *self,
event->area.y,
event->area.width,
event->area.height);
meta_window_actor_notify_damaged (self);
}
void
@ -2111,3 +2128,9 @@ meta_window_actor_from_actor (ClutterActor *actor)
return NULL;
}
void
meta_window_actor_notify_damaged (MetaWindowActor *window_actor)
{
g_signal_emit (window_actor, signals[DAMAGED], 0);
}

27
src/wayland/meta-wayland-surface.c
View File

@ -672,6 +672,8 @@ void
meta_wayland_surface_apply_pending_state (MetaWaylandSurface *surface,
MetaWaylandPendingState *pending)
{
gboolean had_damage = FALSE;
if (surface->role)
{
meta_wayland_surface_role_pre_commit (surface->role, pending);
@ -778,9 +780,12 @@ meta_wayland_surface_apply_pending_state (MetaWaylandSurface *surface,
if (!cairo_region_is_empty (pending->surface_damage) ||
!cairo_region_is_empty (pending->buffer_damage))
surface_process_damage (surface,
pending->surface_damage,
pending->buffer_damage);
{
surface_process_damage (surface,
pending->surface_damage,
pending->buffer_damage);
had_damage = TRUE;
}
surface->offset_x += pending->dx;
surface->offset_y += pending->dy;
@ -844,6 +849,22 @@ cleanup:
G_TRAVERSE_ALL,
parent_surface_state_applied,
NULL);
if (had_damage)
{
MetaWindow *toplevel_window;
toplevel_window = meta_wayland_surface_get_toplevel_window (surface);
if (toplevel_window)
{
MetaWindowActor *toplevel_window_actor;
toplevel_window_actor =
meta_window_actor_from_window (toplevel_window);
if (toplevel_window_actor)
meta_window_actor_notify_damaged (toplevel_window_actor);
}
}
}
static void