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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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59
clutter/evdev/clutter-device-manager-evdev.c
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@ -130,6 +130,65 @@ evdev_add_device (ClutterDeviceManagerEvdev *manager_evdev,
device_file, type, sysfs_path);
}
static ClutterInputDeviceEvdev *
find_device_by_udev_device (ClutterDeviceManagerEvdev *manager_evdev,
GUdevDevice *udev_device)
{
ClutterDeviceManagerEvdevPrivate *priv = manager_evdev->priv;
GSList *l;
const gchar *sysfs_path;
sysfs_path = g_udev_device_get_sysfs_path (udev_device);
if (sysfs_path == NULL)
{
g_message ("device file is NULL");
return NULL;
}
for (l = priv->devices; l; l = g_slist_next (l))
{
ClutterInputDeviceEvdev *device = l->data;
if (strcmp (sysfs_path,
_clutter_input_device_evdev_get_sysfs_path (device)) == 0)
{
return device;
}
}
return NULL;
}
static void
evdev_remove_device (ClutterDeviceManagerEvdev *manager_evdev,
GUdevDevice *device)
{
ClutterDeviceManager *manager = CLUTTER_DEVICE_MANAGER (manager_evdev);
ClutterInputDeviceEvdev *device_evdev;
ClutterInputDevice *input_device;
device_evdev = find_device_by_udev_device (manager_evdev, device);
if (device_evdev == NULL)
return;
input_device = CLUTTER_INPUT_DEVICE (device_evdev);
_clutter_device_manager_remove_device (manager, input_device);
}
static void
on_uevent (GUdevClient *client,
gchar *action,
GUdevDevice *device,
gpointer data)
{
ClutterDeviceManagerEvdev *manager = CLUTTER_DEVICE_MANAGER_EVDEV (data);
if (g_strcmp0 (action, "add") == 0)
evdev_add_device (manager, device);
else if (g_strcmp0 (action, "remove") == 0)
evdev_remove_device (manager, device);
}
/*
* ClutterDeviceManager implementation
*/