diff options
Diffstat (limited to 'src/positioning/qgeopositioninfosource.cpp')
| -rw-r--r-- | src/positioning/qgeopositioninfosource.cpp | 58 |
1 files changed, 49 insertions, 9 deletions
diff --git a/src/positioning/qgeopositioninfosource.cpp b/src/positioning/qgeopositioninfosource.cpp index cafb4f8a..2e126175 100644 --- a/src/positioning/qgeopositioninfosource.cpp +++ b/src/positioning/qgeopositioninfosource.cpp @@ -241,8 +241,10 @@ int QGeoPositionInfoSource::updateInterval() const If \a methods includes a method that is not supported by the source, the unsupported method will be ignored. - If \a methods does not include any methods supported by the source, the - preferred methods will be set to the set of methods which the source supports. + If \a methods does not include a single method available/supported by the source, the + preferred methods will be set to the set of methods which the source has available. + If the source has no method availabe (e.g. because its Location service is turned off + or it does not offer a Location service), the passed \a methods are accepted as they are. \b {Note:} When reimplementing this method, subclasses must call the base method implementation to ensure preferredPositioningMethods() returns the correct value. @@ -251,9 +253,13 @@ int QGeoPositionInfoSource::updateInterval() const */ void QGeoPositionInfoSource::setPreferredPositioningMethods(PositioningMethods methods) { - d->methods = methods & supportedPositioningMethods(); - if (d->methods == 0) { - d->methods = supportedPositioningMethods(); + if (supportedPositioningMethods() != QGeoPositionInfoSource::NoPositioningMethods) { + d->methods = methods & supportedPositioningMethods(); + if (d->methods == 0) { + d->methods = supportedPositioningMethods(); + } + } else { // avoid that turned of Location service blocks any changes to d->methods + d->methods = methods; } } @@ -355,9 +361,40 @@ QStringList QGeoPositionInfoSource::availableSources() /*! \fn virtual PositioningMethods QGeoPositionInfoSource::supportedPositioningMethods() const = 0; - Returns the positioning methods available to this source. - - \sa setPreferredPositioningMethods() + Returns the positioning methods available to this source. Availability is defined as being usable + at the time of calling this function. Therefore user settings like turned off location service or + limitations to Satellite-based position providers are reflected by this function. Runtime notifications + when the status changes can be obtained via \l supportedPositioningMethodsChanged(). + + Not all platforms distinguish the different positioning methods or communicate the current user + configuration of the device. The following table provides an overview of the current platform situation: + + \table + \header + \li Platform + \li Brief Description + \row + \li Android + \li Individual provider status and general Location service state are known and communicated + when location service is active. + \row + \li GeoClue + \li Hardcoced to always return AllPositioningMethods. + \row + \li GeoClue2 + \li Individual providers are not distinguishable but disabled Location services reflected. + \row + \li iOS/tvOS + \li Hardcoced to always return AllPositioningMethods. + \row + \li macOS + \li Hardcoced to always return AllPositioningMethods. + \row + \li Windows (UWP) + \li Individual providers are not distinguishable but disabled Location services reflected. + \endtable + + \sa supportedPositioningMethodsChanged(), setPreferredPositioningMethods() */ @@ -479,7 +516,10 @@ QStringList QGeoPositionInfoSource::availableSources() /*! \fn void QGeoPositionInfoSource::supportedPositioningMethodsChanged() - This signal is emitted after the supportedPositioningMethods change. + This signal is emitted when the supported positioning methods changed. The cause for a change could be + a user turning Location services on/off or restricting Location services to certain types (e.g. GPS only). + Note that changes to the supported positioning methods cannot be detected on all platforms. + \l supportedPositioningMethods() provides an overview of the current platform support. \since Qt 5.12 */ |