Base class for objects which log incoming GPS data. More...

#include <qgsgpslogger.h>

Inheritance diagram for QgsGpsLogger:

[legend]

Signals
void	distanceAreaChanged ()
	Emitted whenever the distance area used to calculate track distances is changed.
void	stateChanged (const QgsGpsInformation &info)
	Emitted whenever the associated GPS device state is changed.
void	trackIsEmptyChanged (bool isEmpty)
	Emitted whenever the current track changes from being empty to non-empty or vice versa.
void	trackReset ()
	Emitted whenever the current track is reset.
void	trackVertexAdded (const QgsPoint &vertex)
	Emitted whenever a new vertex is added to the track.

Public Member Functions
	QgsGpsLogger (QgsGpsConnection connection, QObject parent=nullptr)
	Constructor for QgsGpsLogger with the specified parent object.
	~QgsGpsLogger () override
bool	automaticallyAddTrackVertices () const
	Returns `true` if track vertices will be automatically added whenever the GPS position is changed.
QVariant	componentValue (Qgis::GpsInformationComponent component) const
	Returns the value of the corresponding GPS information component.
QgsGpsConnection *	connection ()
	Returns the associated GPS connection.
QgsGeometry	currentGeometry (Qgis::WkbType type, QString &error) const
	Returns the current logged GPS positions as a geometry of the specified type.
QVector< QgsPoint >	currentTrack () const
	Returns the recorded points in the current track.
const QgsDistanceArea &	distanceArea () const
	Returns the distance area calculator which should be used for calculating distances associated with the GPS log.
double	lastElevation () const
	Returns the last recorded elevation the device.
double	lastMValue () const
	Returns the last recorded value corresponding to the QgsGpsLogger::settingsGpsMValueComponent setting.
QgsPointXY	lastPosition () const
	Returns the last recorded position of the device.
QDateTime	lastTimestamp () const
	Returns the last recorded timestamp from the device.
void	resetTrack ()
	Resets the current track, discarding all recorded points.
void	setAutomaticallyAddTrackVertices (bool enabled)
	Sets whether track vertices will be automatically added whenever the GPS position is changed.
void	setConnection (QgsGpsConnection *connection)
	Sets the associated GPS connection.
void	setEllipsoid (const QString &ellipsoid)
	Sets the ellipsoid which will be used for calculating distances in the log.
virtual void	setTransformContext (const QgsCoordinateTransformContext &context)
	Sets the coordinate transform context to be used when transforming GPS coordinates.
double	totalTrackLength () const
	Returns the total length of the current digitized track (in meters).
double	trackDistanceFromStart () const
	Returns the direct length from the first vertex in the track to the last (in meters).
QDateTime	trackStartTime () const
	Returns the timestamp at which the current track was started.
QgsCoordinateTransformContext	transformContext () const
	Returns the coordinate transform context to be used when transforming GPS coordinates.
void	updateGpsSettings ()
	Should be called whenever the QGIS GPS settings are changed.

Static Public Attributes
static const QgsSettingsEntryInteger *	settingsAcquisitionInterval = new QgsSettingsEntryInteger( QStringLiteral( "acquisitionInterval" ), QgsSettingsTree::sTreeGps, 0 )
static const QgsSettingsEntryBool *	settingsApplyLeapSeconds = new QgsSettingsEntryBool( QStringLiteral( "applyLeapSeconds" ), QgsSettingsTree::sTreeGps, true )
static const QgsSettingsEntryDouble *	settingsDistanceThreshold = new QgsSettingsEntryDouble( QStringLiteral( "distanceThreshold" ), QgsSettingsTree::sTreeGps, 0 )
static const QgsSettingsEntryEnumFlag< Qgis::GpsInformationComponent > *	settingsGpsMValueComponent = new QgsSettingsEntryEnumFlag<Qgis::GpsInformationComponent>( QStringLiteral( "m-value-attribute" ), QgsSettingsTree::sTreeGps, Qgis::GpsInformationComponent::Timestamp, QStringLiteral( "Which GPS attribute should be stored in geometry m values" ) )
	Settings entry dictating which GPS attribute should be stored in geometry M values.
static const QgsSettingsEntryBool *	settingsGpsStoreAttributeInMValues = new QgsSettingsEntryBool( QStringLiteral( "store-attribute-in-m-values" ), QgsSettingsTree::sTreeGps, false, QStringLiteral( "Whether GPS attributes should be stored in geometry m values" ) )
	Settings entry for whether storing GPS attributes as geometry M values should be enabled.
static const QgsSettingsEntryInteger *	settingsLeapSecondsCorrection = new QgsSettingsEntryInteger( QStringLiteral( "leapSecondsCorrection" ), QgsSettingsTree::sTreeGps, 18 )
static const QgsSettingsEntryInteger *	settingsTimeStampFormat = new QgsSettingsEntryInteger( QStringLiteral( "timeStampFormat" ), QgsSettingsTree::sTreeGps, Qt::LocalTime )
static const QgsSettingsEntryString *	settingsTimestampTimeZone = new QgsSettingsEntryString( QStringLiteral( "timestampTimeZone" ), QgsSettingsTree::sTreeGps, QString() )

Protected Member Functions
void	addTrackVertex ()
	Adds a track vertex at the current GPS location.

Protected Attributes
int	mBlockGpsStateChanged = 0
	Used to pause logging of incoming GPS messages.
QgsCoordinateReferenceSystem	mWgs84CRS
	WGS84 coordinate reference system.

Friends
class	TestQgsGpsIntegration

Detailed Description

Base class for objects which log incoming GPS data.

This class handles generic logic regarding logging GPS data, such as creation of tracks from incoming GPS location points.

Since: QGIS 3.30

Definition at line 55 of file qgsgpslogger.h.

Constructor & Destructor Documentation

◆ QgsGpsLogger()

QgsGpsLogger::QgsGpsLogger	(	QgsGpsConnection *	connection,
		QObject *	parent = nullptr )

Constructor for QgsGpsLogger with the specified parent object.

The logger will automatically record GPS information from the specified connection.

Definition at line 45 of file qgsgpslogger.cpp.

◆ ~QgsGpsLogger()

QgsGpsLogger::~QgsGpsLogger ( )

override

Definition at line 63 of file qgsgpslogger.cpp.

Member Function Documentation

◆ addTrackVertex()

void QgsGpsLogger::addTrackVertex ( )

protected

Adds a track vertex at the current GPS location.

Definition at line 462 of file qgsgpslogger.cpp.

◆ automaticallyAddTrackVertices()

bool QgsGpsLogger::automaticallyAddTrackVertices ( ) const

Returns true if track vertices will be automatically added whenever the GPS position is changed.

See also: setAutomaticallyAddTrackVertices()

Definition at line 483 of file qgsgpslogger.cpp.

◆ componentValue()

QVariant QgsGpsLogger::componentValue ( Qgis::GpsInformationComponent component ) const

Returns the value of the corresponding GPS information component.

Definition at line 303 of file qgsgpslogger.cpp.

◆ connection()

QgsGpsConnection * QgsGpsLogger::connection ( )

Returns the associated GPS connection.

See also: setConnection()

Definition at line 68 of file qgsgpslogger.cpp.

◆ currentGeometry()

QgsGeometry QgsGpsLogger::currentGeometry	(	Qgis::WkbType	type,
		QString &	error ) const

Returns the current logged GPS positions as a geometry of the specified type.

The returned geometries will always be in the WGS84 (EPSG:4326) coordinate reference system.

Parameters

type	desired geometry type
error	Will be set to a user-friendly error if the logged positions could not be converted to an appropriate geometry

Returns: logged GPS positions as a geometry.

Definition at line 116 of file qgsgpslogger.cpp.

◆ currentTrack()

QVector< QgsPoint > QgsGpsLogger::currentTrack ( ) const

Returns the recorded points in the current track.

These points will always be in WGS84 coordinate reference system.

Definition at line 111 of file qgsgpslogger.cpp.

◆ distanceArea()

const QgsDistanceArea & QgsGpsLogger::distanceArea ( ) const

Returns the distance area calculator which should be used for calculating distances associated with the GPS log.

Definition at line 106 of file qgsgpslogger.cpp.

◆ distanceAreaChanged

void QgsGpsLogger::distanceAreaChanged ( )

signal

Emitted whenever the distance area used to calculate track distances is changed.

◆ lastElevation()

double QgsGpsLogger::lastElevation ( ) const

Returns the last recorded elevation the device.

Definition at line 197 of file qgsgpslogger.cpp.

◆ lastMValue()

double QgsGpsLogger::lastMValue ( ) const

Returns the last recorded value corresponding to the QgsGpsLogger::settingsGpsMValueComponent setting.

Definition at line 202 of file qgsgpslogger.cpp.

◆ lastPosition()

QgsPointXY QgsGpsLogger::lastPosition ( ) const

Returns the last recorded position of the device.

The returned point will always be in WGS84 coordinate reference system.

Definition at line 192 of file qgsgpslogger.cpp.

◆ lastTimestamp()

QDateTime QgsGpsLogger::lastTimestamp ( ) const

Returns the last recorded timestamp from the device.

The returned time value will respect all user settings regarding GPS time zone handling.

Definition at line 493 of file qgsgpslogger.cpp.

◆ resetTrack()

void QgsGpsLogger::resetTrack ( )

Resets the current track, discarding all recorded points.

Definition at line 207 of file qgsgpslogger.cpp.

◆ setAutomaticallyAddTrackVertices()

void QgsGpsLogger::setAutomaticallyAddTrackVertices ( bool enabled )

Sets whether track vertices will be automatically added whenever the GPS position is changed.

See also: automaticallyAddTrackVertices()

Definition at line 488 of file qgsgpslogger.cpp.

◆ setConnection()

void QgsGpsLogger::setConnection ( QgsGpsConnection * connection )

Sets the associated GPS connection.

See also: connection()

Definition at line 73 of file qgsgpslogger.cpp.

◆ setEllipsoid()

void QgsGpsLogger::setEllipsoid ( const QString & ellipsoid )

Sets the ellipsoid which will be used for calculating distances in the log.

Definition at line 88 of file qgsgpslogger.cpp.

◆ setTransformContext()

void QgsGpsLogger::setTransformContext ( const QgsCoordinateTransformContext & context )

virtual

Sets the coordinate transform context to be used when transforming GPS coordinates.

See also: transformContext()

Reimplemented in QgsVectorLayerGpsLogger.

Definition at line 94 of file qgsgpslogger.cpp.

◆ stateChanged

void QgsGpsLogger::stateChanged ( const QgsGpsInformation & info )

signal

Emitted whenever the associated GPS device state is changed.

◆ totalTrackLength()

double QgsGpsLogger::totalTrackLength ( ) const

Returns the total length of the current digitized track (in meters).

The returned length is calculated using ellipsoidal calculations.

Definition at line 270 of file qgsgpslogger.cpp.

◆ trackDistanceFromStart()

double QgsGpsLogger::trackDistanceFromStart ( ) const

Returns the direct length from the first vertex in the track to the last (in meters).

The returned length is calculated using ellipsoidal calculations.

Definition at line 286 of file qgsgpslogger.cpp.

◆ trackIsEmptyChanged

void QgsGpsLogger::trackIsEmptyChanged ( bool isEmpty )

signal

Emitted whenever the current track changes from being empty to non-empty or vice versa.

◆ trackReset

void QgsGpsLogger::trackReset ( )

signal

Emitted whenever the current track is reset.

◆ trackStartTime()

QDateTime QgsGpsLogger::trackStartTime ( ) const

Returns the timestamp at which the current track was started.

The returned time value will respect all user settings regarding GPS time zone handling.

Definition at line 540 of file qgsgpslogger.cpp.

◆ trackVertexAdded

void QgsGpsLogger::trackVertexAdded ( const QgsPoint & vertex )

signal

Emitted whenever a new vertex is added to the track.

The vertex point will be in WGS84 coordinate reference system.

◆ transformContext()

QgsCoordinateTransformContext QgsGpsLogger::transformContext ( ) const

Returns the coordinate transform context to be used when transforming GPS coordinates.

See also: setTransformContext()

Definition at line 101 of file qgsgpslogger.cpp.

◆ updateGpsSettings()

void QgsGpsLogger::updateGpsSettings ( )

Should be called whenever the QGIS GPS settings are changed.

Definition at line 222 of file qgsgpslogger.cpp.

◆ TestQgsGpsIntegration

friend class TestQgsGpsIntegration

friend

Definition at line 312 of file qgsgpslogger.h.

Member Data Documentation

◆ mBlockGpsStateChanged

int QgsGpsLogger::mBlockGpsStateChanged = 0

mutableprotected

Used to pause logging of incoming GPS messages.

Definition at line 263 of file qgsgpslogger.h.

◆ mWgs84CRS

QgsCoordinateReferenceSystem QgsGpsLogger::mWgs84CRS

protected

WGS84 coordinate reference system.

Definition at line 260 of file qgsgpslogger.h.

◆ settingsAcquisitionInterval

const QgsSettingsEntryInteger * QgsGpsLogger::settingsAcquisitionInterval = new QgsSettingsEntryInteger( QStringLiteral( "acquisitionInterval" ), QgsSettingsTree::sTreeGps, 0 )

static

Definition at line 69 of file qgsgpslogger.h.

◆ settingsApplyLeapSeconds

const QgsSettingsEntryBool * QgsGpsLogger::settingsApplyLeapSeconds = new QgsSettingsEntryBool( QStringLiteral( "applyLeapSeconds" ), QgsSettingsTree::sTreeGps, true )

static

Definition at line 61 of file qgsgpslogger.h.

◆ settingsDistanceThreshold

const QgsSettingsEntryDouble * QgsGpsLogger::settingsDistanceThreshold = new QgsSettingsEntryDouble( QStringLiteral( "distanceThreshold" ), QgsSettingsTree::sTreeGps, 0 )

static

Definition at line 71 of file qgsgpslogger.h.

◆ settingsGpsMValueComponent

const QgsSettingsEntryEnumFlag< Qgis::GpsInformationComponent > * QgsGpsLogger::settingsGpsMValueComponent = new QgsSettingsEntryEnumFlag<Qgis::GpsInformationComponent>( QStringLiteral( "m-value-attribute" ), QgsSettingsTree::sTreeGps, Qgis::GpsInformationComponent::Timestamp, QStringLiteral( "Which GPS attribute should be stored in geometry m values" ) )

static

Settings entry dictating which GPS attribute should be stored in geometry M values.

Definition at line 78 of file qgsgpslogger.h.

◆ settingsGpsStoreAttributeInMValues

const QgsSettingsEntryBool * QgsGpsLogger::settingsGpsStoreAttributeInMValues = new QgsSettingsEntryBool( QStringLiteral( "store-attribute-in-m-values" ), QgsSettingsTree::sTreeGps, false, QStringLiteral( "Whether GPS attributes should be stored in geometry m values" ) )

static

Settings entry for whether storing GPS attributes as geometry M values should be enabled.

Definition at line 75 of file qgsgpslogger.h.

◆ settingsLeapSecondsCorrection

const QgsSettingsEntryInteger * QgsGpsLogger::settingsLeapSecondsCorrection = new QgsSettingsEntryInteger( QStringLiteral( "leapSecondsCorrection" ), QgsSettingsTree::sTreeGps, 18 )

static

Definition at line 67 of file qgsgpslogger.h.

◆ settingsTimeStampFormat

const QgsSettingsEntryInteger * QgsGpsLogger::settingsTimeStampFormat = new QgsSettingsEntryInteger( QStringLiteral( "timeStampFormat" ), QgsSettingsTree::sTreeGps, Qt::LocalTime )

static

Definition at line 65 of file qgsgpslogger.h.

◆ settingsTimestampTimeZone

const QgsSettingsEntryString * QgsGpsLogger::settingsTimestampTimeZone = new QgsSettingsEntryString( QStringLiteral( "timestampTimeZone" ), QgsSettingsTree::sTreeGps, QString() )

static

Definition at line 63 of file qgsgpslogger.h.

The documentation for this class was generated from the following files:

/build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/core/gps/qgsgpslogger.h
/build/qgis-3.99.0+git20251210+2fe06baccd8+99sid/src/core/gps/qgsgpslogger.cpp

Signals

Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ QgsGpsLogger()

◆ ~QgsGpsLogger()

Member Function Documentation

◆ addTrackVertex()

◆ automaticallyAddTrackVertices()

◆ componentValue()

◆ connection()

◆ currentGeometry()

◆ currentTrack()

◆ distanceArea()

◆ distanceAreaChanged

◆ lastElevation()

◆ lastMValue()

◆ lastPosition()

◆ lastTimestamp()

◆ resetTrack()

◆ setAutomaticallyAddTrackVertices()

◆ setConnection()

◆ setEllipsoid()

◆ setTransformContext()

◆ stateChanged

◆ totalTrackLength()

◆ trackDistanceFromStart()

◆ trackIsEmptyChanged

◆ trackReset

◆ trackStartTime()

◆ trackVertexAdded

◆ transformContext()

◆ updateGpsSettings()

Friends And Related Symbol Documentation

◆ TestQgsGpsIntegration

Member Data Documentation

◆ mBlockGpsStateChanged

◆ mWgs84CRS

◆ settingsAcquisitionInterval

◆ settingsApplyLeapSeconds

◆ settingsDistanceThreshold

◆ settingsGpsMValueComponent

◆ settingsGpsStoreAttributeInMValues

◆ settingsLeapSecondsCorrection

◆ settingsTimeStampFormat

◆ settingsTimestampTimeZone