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Showing content from https://developers.arcgis.com/qt/cpp/api-reference/esri-arcgisruntime-locationdisplay.html below:

LocationDisplay Class | ArcGIS Maps SDK for Qt

Destructor.

Returns a symbol used to represent location accuracy.

The accuracy of the location can vary depending on signal strength, satellite positions, and other factors. This circle may contract and expand as the accuracy of the locations, read from the AbstractLocationDataSource, increases or decreases.

The default symbol is a blue outline with a semi-transparent white fill.

See also setAccuracySymbol().

Returns the symbol used to display the last known location while the current location is being acquired.

The symbol will be shown until a new location fix is found. This symbol may be used immediately after starting the LocationDisplay. Once an up-to-date location is acquired, the defaultSymbol, courseSymbol, or headingSymbol is used, depending on the current settings of the LocationDisplay. The default symbol is a grey circle.

See also setAcquiringSymbol().

The time in milliseconds between the last valid position update and displaying the acquiring symbol.

See also setAcquiringTimeout().

Defines how the MapView reacts when location updates are received.

The different auto-pan modes are suited for different types of app, including modes designed for navigation on foot and in a vehicle. They affect the symbols used to display device location, the initial zooming behavior, and the panning behavior of the MapView.

The auto-pan modes include:

• Recenter - the map view attempts to keep the location symbol on-screen by re-centering the location symbol when the symbol moves outside an extent defined by the wanderExtentFactor.
• Navigation - the location symbol is pinned to a point on the screen and always points toward the top edge of the device. The map pans and rotates based on location updates and the direction of travel.
• Compass navigation - the location symbol is pinned to a point on the screen and always points toward the top edge of the device. The map rotates based on the user's bearing relative to magnetic north.
• Off - the map only updates the position of the location symbol on the map.

To start the LocationDisplay in a specific mode, call this method before you start the AbstractLocationDataSource.

Any default zooming behavior (besides scrolling) or any operation that modifies the Viewpoint will automatically set the auto-pan mode to LocationDisplayAutoPanMode::Off.

The default auto-pan mode is LocationDisplayAutoPanMode::Off.

See also setAutoPanMode() and LocationDisplayAutoPanMode.

Emitted when the auto pan mode changes.

• autoPanMode - The auto pan mode.

Returns the symbol used to display the current location and the course (direction of travel) when moving.

This symbol rotates with the heading of the movement. If course information is not available (for example if the device is not moving), the defaultSymbol is used.

See also setCourseSymbol().

Returns the location data source used for generating location updates.

LocationDisplay uses a location data source to provide the current position of the device. To start receiving location updates, and display the current location, you must start the location data source.

By default the location data source obtains locations from the device's operating system.

Alternative location data sources include:

• SimulatedLocationDataSource
• NmeaLocationDataSource
• IndoorsLocationDataSource
• RouteTrackerLocationDataSource

This function was introduced in Esri::ArcGISRuntime 100.8.

See also setDataSource().

Returns the symbol used for the location when not moving.

Changing the location symbols is typically done if the existing symbols do not work well with the underlying map cartography, to increase visibility for visually impaired users, or to match an apps visual appearance.

See also setDefaultSymbol().

Returns the heading angle of the current location in degrees relative to north.

This is only applicable when the auto-pan mode is LocationDisplayAutoPanMode::CompassNavigation. The value 0 means the device is pointed toward magnetic north, 90 means it is pointed due east, 180 means it is pointed due south, and so on. A negative value indicates that the heading could not be determined.

Emitted when the heading changes.

Returns the symbol used for the location when the auto-pan mode is LocationDisplayAutoPanMode::CompassNavigation.

The symbol is rotated to match with the heading of the compass. If there is no heading information (for example, if the device does not have a compass sensor), the defaultSymbol is used.

See also setHeadingSymbol().

Returns the scale that the map should automatically be zoomed to upon receiving the first location update.

The initial map scale to which the MapView will zoom when the first location update is received after the auto-pan mode is changed from LocationDisplayAutoPanMode::Off to any other value. The default value is 10,000.

See also setInitialZoomScale().

Returns true if the accuracySymbol is shown, false otherwise.

Returns true if location symbols are shown, false otherwise.

Returns true if the pingAnimationSymbol is shown, false otherwise.

Returns true if the location display is currently active (the AbstractLocationDataSource has been started), false otherwise.

Returns true if the courseSymbol is used to display current location, when the location updates indicate the device is moving, false otherwise.

If no course information is available, the default symbol will be used instead. The courseSymbol is rotated in order to indicate the device's direction of travel. Generally, course information is only available if the device is actively moving (the location has a positive speed).

Returns the most recent location reported by the location data source.

The Location provides data for the single location, including position, course, velocity, and accuracy.

Emitted when the location changes.

• location - The most recent Location update.

Returns the map position of the most recent location reported by the location data source in the projection of the current map view.

Returns the navigation point height factor. The factor will decide the location symbol position vertically from the bottom of the map when the auto-pan mode is LocationDisplayAutoPanMode::Navigation. When navigating in a map, the current location is typically vertically positioned near the bottom of the map, and horizontally centered in the map, so that the map displays as much of the route ahead as possible.

See also setNavigationPointHeightFactor().

Returns the opacity value of all symbols displayed by the LocationDisplay. The value should be between 0 and 1.

See also setOpacity().

Returns the symbol that will be animated around the location symbol, to indicate when location updates are received.

Location update animations are only shown when isShowPingAnimationSymbol is true.

See also setPingAnimationSymbol().

Sets the accuracySymbol to accuracySymbol.

See also accuracySymbol.

Sets the acquiringSymbol to acquiringSymbol.

See also acquiringSymbol.

Sets the acquiring symbol timeout to timeoutMilliseconds.

The default timeout is 5 seconds. If the acquiringTimeout is passed, the location symbol will change to display the location acquiring symbol (which is gray in color).

See also acquiringTimeout().

Sets the autoPanMode to autoPanMode.

See also autoPanMode.

Sets the courseSymbol to courseSymbol.

See also courseSymbol.

Sets the dataSource to dataSource.

This function was introduced in Esri::ArcGISRuntime 100.8.

See also dataSource.

Sets the defaultSymbol to defaultSymbol.

See also defaultSymbol.

Sets the headingSymbol to headingSymbol.

See also headingSymbol.

Sets the initialZoomScale to initialScale.

See also initialZoomScale.

Sets the navigationPointHeightFactor to pointHeightFactor.

See also navigationPointHeightFactor.

Sets the opacity to opacity.

See also opacity.

Sets the pingAnimationSymbol to pingSymbol.

See also pingAnimationSymbol.

Sets the showAccuracy to enable.

See also isShowAccuracy.

Sets the showLocation to enable.

See also isShowLocation.

Sets the showPingAnimationSymbol to enable.

See also isShowPingAnimationSymbol.

Sets the useCourseSymbolOnMovement to enable.

See also isUseCourseSymbolOnMovement.

Sets the wanderExtentFactor to wanderFactor.

See also wanderExtentFactor.

Starts the LocationDisplay on the MapView.

If a location data source is not explicitly set, a DefaultLocationDataSource will be assigned and started. If you attempt to start location display on a instance that is already started, it will complete without attempting to start it again. There is no need to check if it is started before calling start. If a user had previously denied the app access to location services, calling start again will again attempt to start.

Emitted when the status changes.

• started - Whether the LocationDisplay is started.

Stops the LocationDisplay on the MapView.

Calling stop on the LocationDisplay will automatically attempt to stop its location data source.

Returns the wander extent factor controls the re-centering behavior of the MapView when the location changes.

The proportion of the current extent within which the location can be without automatically panning the map. Permitted values are in the range between 0 (continuous panning) and 1 (only pan when the location reaches the edge of the current extent). This value only applies when the auto-pan mode is LocationDisplayAutoPanMode::Recenter. Lower values within this range will cause the map to re-center more often, leading to higher CPU and battery consumption.

See also setWanderExtentFactor().

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