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backend: Pre-emptively create idle monitors based on clutter events

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Rather than have the DBus code control this, move this into
MetaBackend. This also lets us destroy idle monitors when appropriate,
rather than leaking them forever.
This commit is contained in:
Jasper St. Pierre 2014-09-04 12:06:03 -07:00
parent 3ea6424b8f
commit 659360d543
1 changed files with 62 additions and 16 deletions
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78
src/backends/meta-backend.c
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@ -97,6 +97,47 @@ on_monitors_changed (MetaMonitorManager *monitors,
meta_backend_sync_screen_size (backend);
}
static void
create_device_monitor (MetaBackend *backend,
int device_id)
{
g_assert (backend->device_monitors[device_id] == NULL);
backend->device_monitors[device_id] = meta_backend_create_idle_monitor (backend, device_id);
backend->device_id_max = MAX (backend->device_id_max, device_id);
}
static void
destroy_device_monitor (MetaBackend *backend,
int device_id)
{
g_clear_object (&backend->device_monitors[device_id]);
if (device_id == backend->device_id_max)
backend->device_id_max--;
}
static void
on_device_added (ClutterDeviceManager *device_manager,
ClutterInputDevice *device,
gpointer user_data)
{
MetaBackend *backend = META_BACKEND (user_data);
int device_id = clutter_input_device_get_device_id (device);
create_idle_monitor (backend, device_id);
}
static void
on_device_removed (ClutterDeviceManager *device_manager,
ClutterInputDevice *device,
gpointer user_data)
{
MetaBackend *backend = META_BACKEND (user_data);
int device_id = clutter_input_device_get_device_id (device);
destroy_idle_monitor (backend, device_id);
}
static void
meta_backend_real_post_init (MetaBackend *backend)
{
@ -113,6 +154,27 @@ meta_backend_real_post_init (MetaBackend *backend)
meta_backend_sync_screen_size (backend);
priv->cursor_renderer = META_BACKEND_GET_CLASS (backend)->create_cursor_renderer (backend);
{
ClutterDeviceManager *manager;
GSList *devices, *l;
manager = clutter_device_manager_get_default ();
g_signal_connect_object (manager, "device-added",
G_CALLBACK (on_device_added), backend, 0);
g_signal_connect_object (manager, "device-removed",
G_CALLBACK (on_device_removed), backend, 0);
devices = clutter_device_manager_list_devices (backend);
for (l = devices; l != NULL; l = l->next)
{
ClutterDevice *device = l->data;
on_device_added (manager, device, backend);
}
g_slist_free (devices);
}
}
static MetaCursorRenderer *
@ -182,16 +244,6 @@ meta_backend_init (MetaBackend *backend)
_backend = backend;
}
/* FIXME -- destroy device monitors at some point */
G_GNUC_UNUSED static void
destroy_device_monitor (MetaBackend *backend,
int device_id)
{
g_clear_object (&backend->device_monitors[device_id]);
if (device_id == backend->device_id_max)
backend->device_id_max--;
}
static MetaIdleMonitor *
meta_backend_create_idle_monitor (MetaBackend *backend,
int device_id)
@ -214,12 +266,6 @@ meta_backend_get_idle_monitor (MetaBackend *backend,
{
g_return_val_if_fail (device_id >= 0 && device_id < 256, NULL);
if (!backend->device_monitors[device_id])
{
backend->device_monitors[device_id] = meta_backend_create_idle_monitor (backend, device_id);
backend->device_id_max = MAX (backend->device_id_max, device_id);
}
return backend->device_monitors[device_id];
}