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evdev: Support hotplug (addition/removal) of evdev devices

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Just connect to the GUdevClient "uevent" signal and deals with
"add"/"remove" commands. This drives the installation/removal of
GSource to listen to the device.
This commit is contained in:
Damien Lespiau
2010-11-09 11:56:26 -05:00
parent b83a4813a4
commit afee3b009c
2 changed files with 108 additions and 0 deletions
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49
clutter/evdev/clutter-event-evdev.c
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@ -282,6 +282,49 @@ _clutter_event_evdev_remove_source (ClutterEventSource *source)
event_sources = g_slist_remove (event_sources, source);
}
static void
on_device_added (ClutterDeviceManager *manager,
ClutterInputDevice *device,
gpointer data)
{
ClutterInputDeviceEvdev *input_device = CLUTTER_INPUT_DEVICE_EVDEV (device);
_clutter_event_evdev_add_source (input_device);
}
static ClutterEventSource *
find_source_by_device (ClutterInputDevice *device)
{
GSList *l;
for (l = event_sources; l; l = g_slist_next (l))
{
ClutterEventSource *source = l->data;
if (source->device == (ClutterInputDeviceEvdev *) device)
return source;
}
return NULL;
}
static void
on_device_removed (ClutterDeviceManager *manager,
ClutterInputDevice *device,
gpointer data)
{
ClutterEventSource *source;
source = find_source_by_device (device);
if (G_UNLIKELY (source == NULL))
{
g_warning ("Trying to remove a device without a source installed ?!");
return;
}
_clutter_event_evdev_remove_source (source);
}
void
_clutter_events_evdev_init (ClutterBackend *backend)
{
@ -301,6 +344,12 @@ _clutter_events_evdev_init (ClutterBackend *backend)
_clutter_event_evdev_add_source (input_device);
}
/* make sure to add/remove sources when devices are added/removed */
g_signal_connect (device_manager, "device-added",
G_CALLBACK (on_device_added), NULL);
g_signal_connect (device_manager, "device-removed",
G_CALLBACK (on_device_removed), NULL);
}
void