The QGeoSatelliteInfoSource class is an abstract base class for the distribution of satellite information updates. More...
#include <QGeoSatelliteInfoSource>
Inherits: QObject.
This class was introduced in Qt Mobility 1.0.
QGeoSatelliteInfoSource ( QObject * parent ) |
virtual void | requestUpdate ( int timeout = 0 ) = 0 |
virtual void | startUpdates () = 0 |
virtual void | stopUpdates () = 0 |
void | requestTimeout () |
void | satellitesInUseUpdated ( const QList<QGeoSatelliteInfo> & satellites ) |
void | satellitesInViewUpdated ( const QList<QGeoSatelliteInfo> & satellites ) |
QStringList | availableSources () |
QGeoSatelliteInfoSource * | createDefaultSource ( QObject * parent ) |
QGeoSatelliteInfoSource * | createSource ( const QString & sourceName, QObject * parent ) |
The QGeoSatelliteInfoSource class is an abstract base class for the distribution of satellite information updates.
The static function QGeoSatelliteInfoSource::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.
Warning: On Windows CE it is not possible to detect if a device is GPS enabled. The default satellite source on a Windows CE device without GPS support will never provide any satellite data.
Warning: On Symbian it is currently only possible to instantiate and use the satellite sources in the main thread of the application.
Creates a source with the specified parent.
Returns a list of available source plugins. Note that this does not include the default system backend, if one is available.
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 0 if the system has no default source and no valid plugins could be found.
Note: Symbian applications will need to have the Location capability otherwise this will return 0.
This function was introduced in Qt Mobility 1.0.
Creates and returns a source with the given parent, by loading the plugin named sourceName.
Returns 0 if the plugin cannot be found.
Emitted if requestUpdate() was called and the current satellite information could not be retrieved within the specified timeout.
This function was introduced in Qt Mobility 1.0.
Attempts to get the current satellite information and emit satellitesInViewUpdated() and satellitesInUseUpdated() with this information. If the current position cannot be found within the given timeout (in milliseconds), requestTimeout() 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.
This function was introduced in Qt Mobility 1.0.
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.
This function was introduced in Qt Mobility 1.0.
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.
This function was introduced in Qt Mobility 1.0.
Starts emitting updates at regular intervals. The updates will be provided whenever new satellite information becomes available.
This function was introduced in Qt Mobility 1.0.
See also satellitesInViewUpdated() and satellitesInUseUpdated().
Stops emitting updates at regular intervals.
This function was introduced in Qt Mobility 1.0.