Top | ![]() |
![]() |
![]() |
![]() |
void | btic_device_add_control () |
BtIcControl * | btic_device_get_control_by_id () |
gboolean | btic_device_has_controls () |
gboolean | btic_device_start () |
gboolean | btic_device_stop () |
gboolean | (*btic_device_virtual_start) () |
gboolean | (*btic_device_virtual_stop) () |
Abstract base class for control devices. Subclasses will provide
functionality to query capabilities and register BtIcControl instances.
They will also read from the device and trigger the change events on their
controls (via value property). To activate reading from a device, the
application needs to call btic_device_start()
. The device is activates on the
first such call. Each activation is counted and thus should be paired with a
call to btic_device_stop()
to stop the device on the last call.
This baseclass manages the added controls. They can be queried by calling
btic_device_get_control_by_id()
or iterating the list in
BtIcDevice::controls.
void btic_device_add_control (const BtIcDevice *self
,const BtIcControl *control
);
Add the given control
to the list that the device manages. Takes ownership
of the control.
BtIcControl * btic_device_get_control_by_id (const BtIcDevice *self
,guint id
);
Look up a control by id
.
Since 0.6
gboolean
btic_device_has_controls (const BtIcDevice *self
);
Check if the device has controls. This is useful to check after device creation. One reason for not having any controls could also be missing read-permissions on the device node.
Since 0.6
gboolean
btic_device_start (const BtIcDevice *self
);
Starts the io-loop for the device. This can be called multiple times and must
be paired by an equal amount of btic_device_stop()
calls.
gboolean
btic_device_stop (const BtIcDevice *self
);
Stops the io-loop for the device. This must be called as often as the device
has been started using btic_device_start()
.
gboolean
(*btic_device_virtual_start) (gconstpointer self
);
Subclasses will override this methods with a function that counts start calls and runs the device-io for starts>0.