Sets our main struct and passes it to the parent class.
Create a new #WebKitGeolocationPosition
Make a copy of the #WebKitGeolocationPosition
Free the #WebKitGeolocationPosition
Get the main Gtk struct
the main Gtk struct as a void*
Set the @position altitude
Set the accuracy of @position altitude
Set the @position heading, as a positive angle between the direction of movement and the North direction, in clockwise direction.
Set the @position speed
Set the @position timestamp. By default it's the time when the @position was created.
the main Gtk struct
WebKitGeolocationPosition is an opaque struct used to provide position updates to a #WebKitGeolocationManager using webkit_geolocation_manager_update_position().