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wayland: Use an event filter instead of the captured event signal

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In order to see all Clutter events, Mutter was previously installing a
signal handler on the ‘captured-event’ signal on the stage and
additionally using a signal emission hook to cope with grabs. This
changes it to use the new clutter_event_add_filter API so that we can
avoid the signal emission hook hack.
This commit is contained in:
Neil Roberts 2013-09-05 12:19:58 +01:00 committed by Jasper St. Pierre
parent e86c53230f
commit e6790038dd
1 changed files with 11 additions and 71 deletions
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82
src/wayland/meta-wayland.c
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@ -654,6 +654,9 @@ reset_idletimes (const ClutterEvent *event)
int device_id;
device = clutter_event_get_device (event);
if (device == NULL)
return;
device_id = clutter_input_device_get_device_id (device);
core_monitor = meta_idle_monitor_get_core ();
@ -672,10 +675,10 @@ reset_idletimes (const ClutterEvent *event)
}
static gboolean
event_cb (ClutterActor *stage,
const ClutterEvent *event,
MetaWaylandCompositor *compositor)
event_filter_cb (const ClutterEvent *event,
gpointer user_data)
{
MetaWaylandCompositor *compositor = user_data;
MetaWaylandSeat *seat = compositor->seat;
MetaWaylandPointer *pointer = &seat->pointer;
MetaWaylandSurface *surface;
@ -714,7 +717,8 @@ event_cb (ClutterActor *stage,
if (pointer->current == NULL)
meta_cursor_tracker_revert_root (seat->cursor_tracker);
meta_cursor_tracker_queue_redraw (seat->cursor_tracker, stage);
meta_cursor_tracker_queue_redraw (seat->cursor_tracker,
CLUTTER_ACTOR (event->any.stage));
}
display = meta_get_display ();
@ -747,58 +751,6 @@ event_cb (ClutterActor *stage,
}
}
static gboolean
event_emission_hook_cb (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
MetaWaylandCompositor *compositor = data;
ClutterActor *actor;
ClutterEvent *event;
g_return_val_if_fail (n_param_values == 2, FALSE);
actor = g_value_get_object (param_values + 0);
event = g_value_get_boxed (param_values + 1);
if (actor == NULL)
return TRUE /* stay connected */;
/* If this event belongs to the corresponding grab for this event
* type then the captured-event signal won't be emitted so we have
* to manually forward it on */
switch (event->type)
{
/* Pointer events */
case CLUTTER_MOTION:
case CLUTTER_ENTER:
case CLUTTER_LEAVE:
case CLUTTER_BUTTON_PRESS:
case CLUTTER_BUTTON_RELEASE:
case CLUTTER_SCROLL:
if (actor == clutter_get_pointer_grab ())
event_cb (clutter_actor_get_stage (actor),
event,
compositor);
break;
/* Keyboard events */
case CLUTTER_KEY_PRESS:
case CLUTTER_KEY_RELEASE:
if (actor == clutter_get_keyboard_grab ())
event_cb (clutter_actor_get_stage (actor),
event,
compositor);
default:
break;
}
return TRUE /* stay connected */;
}
static void
on_monitors_changed (MetaMonitorManager *monitors,
MetaWaylandCompositor *compositor)
@ -839,7 +791,6 @@ void
meta_wayland_init (void)
{
MetaWaylandCompositor *compositor = &_meta_wayland_compositor;
guint event_signal;
MetaMonitorManager *monitors;
ClutterBackend *backend;
CoglContext *cogl_context;
@ -928,20 +879,7 @@ meta_wayland_init (void)
compositor->seat = meta_wayland_seat_new (compositor->wayland_display,
compositor->drm_fd >= 0);
g_signal_connect (compositor->stage,
"captured-event",
G_CALLBACK (event_cb),
compositor);
/* If something sets a grab on an actor then the captured event
* signal won't get emitted but we still want to see these events so
* we can update the cursor position. To make sure we see all events
* we also install an emission hook on the event signal */
event_signal = g_signal_lookup ("event", CLUTTER_TYPE_STAGE);
g_signal_add_emission_hook (event_signal,
0 /* detail */,
event_emission_hook_cb,
compositor, /* hook_data */
NULL /* data_destroy */);
clutter_event_add_filter (event_filter_cb, compositor);
meta_wayland_init_shell (compositor);
@ -979,6 +917,8 @@ meta_wayland_finalize (void)
compositor = meta_wayland_compositor_get_default ();
clutter_event_remove_filter (event_filter_cb, compositor);
meta_xwayland_stop (compositor);
g_clear_object (&compositor->launcher);
}