QSensorManager

The QSensorManager class handles registration and creation of sensor backends. More…

Synopsis

Static functions

• def createBackend (sensor)

• def isBackendRegistered (type, identifier)

• def registerBackend (type, identifier, factory)

• def setDefaultBackend (type, identifier)

• def unregisterBackend (type, identifier)

Detailed Description

Sensor plugins register backends using the registerBackend() function.

When connectToBackend() is called, the createBackend() function will be called.

class PySide2.QtSensors.QSensorManager

static PySide2.QtSensors.QSensorManager.createBackend(sensor)

Parameters

sensor – PySide2.QtSensors.QSensor

Return type

PySide2.QtSensors.QSensorBackend

Create a backend for sensor . Returns null if no suitable backend exists.

static PySide2.QtSensors.QSensorManager.isBackendRegistered(type, identifier)

Parameters

• type – PySide2.QtCore.QByteArray

• identifier – PySide2.QtCore.QByteArray

Return type

bool

Returns true if the backend identified by type and identifier is registered.

This is a convenience method that helps out plugins doing dynamic registration.

static PySide2.QtSensors.QSensorManager.registerBackend(type, identifier, factory)

Parameters

• type – PySide2.QtCore.QByteArray

• identifier – PySide2.QtCore.QByteArray

• factory – PySide2.QtSensors.QSensorBackendFactory

Register a sensor for type . The identifier must be unique.

The factory will be asked to create instances of the backend.

static PySide2.QtSensors.QSensorManager.setDefaultBackend(type, identifier)

Parameters

• type – PySide2.QtCore.QByteArray

• identifier – PySide2.QtCore.QByteArray

Sets or overwrite the sensor type with the backend identifier .

static PySide2.QtSensors.QSensorManager.unregisterBackend(type, identifier)

Parameters

• type – PySide2.QtCore.QByteArray

• identifier – PySide2.QtCore.QByteArray

Unregister the backend for type with identifier .

Note that this only prevents new instance of the backend from being created. It does not invalidate the existing instances of the backend. The backend code should handle the disappearance of the underlying hardware itself.