QGeoSatelliteInfoSource#
The QGeoSatelliteInfoSource
class is an abstract base class for the distribution of satellite information updates. More…
Synopsis#
Properties#
minimumUpdateInterval
- This property holds the minimum time (in milliseconds) required to retrieve a satellite updateupdateInterval
- This property holds the requested interval in milliseconds between each update
Functions#
def
sourceName
()def
updateInterval
()
Virtual functions#
def
backendProperty
(name)def
error
()def
minimumUpdateInterval
()def
requestUpdate
([timeout=0])def
setBackendProperty
(name, value)def
setUpdateInterval
(msec)def
startUpdates
()def
stopUpdates
()
Signals#
def
errorOccurred
(arg__1)def
satellitesInUseUpdated
(satellites)def
satellitesInViewUpdated
(satellites)
Static functions#
def
availableSources
()def
createDefaultSource
(parent)def
createDefaultSource
(parameters, parent)def
createSource
(sourceName, parent)def
createSource
(sourceName, parameters, parent)
Note
This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE
Detailed Description#
The static function createDefaultSource()
creates a default satellite data source that is appropriate for the platform, if one is available. Otherwise, available QGeoPositionInfoSourceFactory
plugins will be checked for one that has a satellite data source available.
Call startUpdates()
and stopUpdates()
to start and stop regular updates, or requestUpdate()
to request a single update. When an update is available, satellitesInViewUpdated()
and/or satellitesInUseUpdated()
will be emitted.
If regular satellite updates are required, setUpdateInterval()
can be used to specify how often these updates should be emitted. If no interval is specified, updates are simply provided whenever they are available. For example:
// Emit updates every 10 seconds if available QGeoSatelliteInfoSource *source = QGeoSatelliteInfoSource::createDefaultSource(0); if (source) source->setUpdateInterval(10000);
To remove an update interval that was previously set, call setUpdateInterval()
with a value of 0.
Note
The satellite source may have a minimum value requirement for update intervals, as returned by minimumUpdateInterval()
.
Note
To use this class from Android service, see Qt Positioning on Android .
- class PySide6.QtPositioning.QGeoSatelliteInfoSource(parent)#
- Parameters:
parent –
PySide6.QtCore.QObject
Note
Properties can be used directly when from __feature__ import true_property
is used or via accessor functions otherwise.
- property PᅟySide6.QtPositioning.QGeoSatelliteInfoSource.minimumUpdateInterval: int#
This property holds This property holds the minimum time (in milliseconds) required to retrieve a satellite update..
This is the minimum value accepted by setUpdateInterval()
and requestUpdate()
.
- Access functions:
- property PᅟySide6.QtPositioning.QGeoSatelliteInfoSource.updateInterval: int#
This property holds This property holds the requested interval in milliseconds between each update..
If the update interval is not set (or is set to 0) the source will provide updates as often as necessary.
If the update interval is set, the source will provide updates at an interval as close to the requested interval as possible. If the requested interval is less than the minimumUpdateInterval()
, the minimum interval is used instead.
Changes to the update interval will happen as soon as is practical, however the time the change takes may vary between implementations. Whether or not the elapsed time from the previous interval is counted as part of the new interval is also implementation dependent.
The default value for this property is 0.
Note
Subclass implementations must call the base implementation of setUpdateInterval() so that updateInterval() returns the correct value.
- Access functions:
setUpdateInterval
(msec)
- PySide6.QtPositioning.QGeoSatelliteInfoSource.Error#
The Error enumeration represents the errors which can occur.
Constant
Description
QGeoSatelliteInfoSource.AccessError
The connection setup to the satellite backend failed because the application lacked the required privileges.
QGeoSatelliteInfoSource.ClosedError
The satellite backend closed the connection, which happens for example in case the user is switching location services to off. This object becomes invalid and should be deleted. A new satellite source can be created by calling
createDefaultSource()
later on.QGeoSatelliteInfoSource.NoError
No error has occurred.
QGeoSatelliteInfoSource.UnknownSourceError
An unidentified error occurred.
QGeoSatelliteInfoSource.UpdateTimeoutError
The current satellite information could not be retrieved within the specified timeout.
- static PySide6.QtPositioning.QGeoSatelliteInfoSource.availableSources()#
- Return type:
list of strings
Returns a list of available source plugins, including the default system backend if one is available.
- PySide6.QtPositioning.QGeoSatelliteInfoSource.backendProperty(name)#
- Parameters:
name – str
- Return type:
object
Returns the value of the backend-specific property named name
, if present. Otherwise the returned value will be invalid.
See also
- static PySide6.QtPositioning.QGeoSatelliteInfoSource.createDefaultSource(parent)#
- Parameters:
parent –
PySide6.QtCore.QObject
- Return type:
Creates and returns a source with the specified parent
that reads from the system’s default source of satellite update information, or the highest priority available plugin.
Returns nullptr
if the system has no default satellite source, no valid plugins could be found or the user does not have the permission to access the satellite data.
- static PySide6.QtPositioning.QGeoSatelliteInfoSource.createDefaultSource(parameters, parent)
- Parameters:
parameters –
parent –
PySide6.QtCore.QObject
- Return type:
Creates and returns a satellite source with the given parent
that reads from the system’s default sources of satellite data, or the plugin with the highest available priority.
Returns nullptr
if the system has no default satellite source, no valid plugins could be found or the user does not have the permission to access the satellite information.
This method passes parameters
to the factory to configure the source.
- static PySide6.QtPositioning.QGeoSatelliteInfoSource.createSource(sourceName, parent)#
- Parameters:
sourceName – str
parent –
PySide6.QtCore.QObject
- Return type:
Creates and returns a source with the given parent
, by loading the plugin named sourceName
.
Returns nullptr
if the plugin cannot be found.
- static PySide6.QtPositioning.QGeoSatelliteInfoSource.createSource(sourceName, parameters, parent)
- Parameters:
sourceName – str
parameters –
parent –
PySide6.QtCore.QObject
- Return type:
Creates and returns a satellite source with the given parent
, by loading the plugin named sourceName
.
Returns nullptr
if the plugin cannot be found.
This method passes parameters
to the factory to configure the source.
Returns the last error that occurred.
Note
Since Qt6 the last error is always reset when calling startUpdates()
or requestUpdate()
.
This signal is emitted after an error occurred. The satelliteError
parameter describes the type of error that occurred.
- abstract PySide6.QtPositioning.QGeoSatelliteInfoSource.minimumUpdateInterval()#
- Return type:
int
Getter of property minimumUpdateInterval
.
- abstract PySide6.QtPositioning.QGeoSatelliteInfoSource.requestUpdate([timeout=0])#
- Parameters:
timeout – int
Attempts to get the current satellite information and emit satellitesInViewUpdated()
and satellitesInUseUpdated()
with this information. If the current satellite information cannot be found within the given timeout
(in milliseconds) or if timeout
is less than the value returned by minimumUpdateInterval()
, an errorOccurred()
signal with UpdateTimeoutError
is emitted.
If the timeout is zero, the timeout defaults to a reasonable timeout period as appropriate for the source.
This does nothing if another update request is in progress. However it can be called even if startUpdates()
has already been called and regular updates are in progress.
Note
Since Qt6 this method always resets the last error to NoError
before requesting the satellite information.
Note
To understand how to use this method from an Android service, see Qt Positioning on Android .
- PySide6.QtPositioning.QGeoSatelliteInfoSource.satellitesInUseUpdated(satellites)#
- Parameters:
satellites –
If startUpdates()
or requestUpdate()
is called, this signal is emitted when an update is available on the number of satellites that are currently in use.
These are the satellites that are used to get a “fix” - that is, those used to determine the current position.
The satellites
parameter holds the satellites currently in use.
- PySide6.QtPositioning.QGeoSatelliteInfoSource.satellitesInViewUpdated(satellites)#
- Parameters:
satellites –
If startUpdates()
or requestUpdate()
is called, this signal is emitted when an update is available on the satellites that are currently in view.
The satellites
parameter holds the satellites currently in view.
- PySide6.QtPositioning.QGeoSatelliteInfoSource.setBackendProperty(name, value)#
- Parameters:
name – str
value – object
- Return type:
bool
Sets the backend-specific property named name
to value
. Returns true
on success, false
otherwise. Backend-specific properties can be used to configure the satellite info subsystem behavior at runtime.
See also
- PySide6.QtPositioning.QGeoSatelliteInfoSource.setUpdateInterval(msec)#
- Parameters:
msec – int
See also
Setter of property updateInterval
.
- PySide6.QtPositioning.QGeoSatelliteInfoSource.sourceName()#
- Return type:
str
Returns the unique name of the satellite source implementation in use.
This is the same name that can be passed to createSource()
in order to create a new instance of a particular satellite source implementation.
- abstract PySide6.QtPositioning.QGeoSatelliteInfoSource.startUpdates()#
Starts emitting updates at regular intervals. The updates will be provided whenever new satellite information becomes available.
If satellite information cannot be retrieved or some other form of timeout has occurred the satellitesInViewUpdated()
and satellitesInUseUpdated()
signals may be emitted with empty parameter lists.
Note
Since Qt6 this method always resets the last error to NoError
before starting the updates.
Note
To understand how to use this method from an Android service, see Qt Positioning on Android .
- abstract PySide6.QtPositioning.QGeoSatelliteInfoSource.stopUpdates()#
Stops emitting updates at regular intervals.
- PySide6.QtPositioning.QGeoSatelliteInfoSource.updateInterval()#
- Return type:
int
See also
Getter of property updateInterval
.