\inmodule QtLocation More...

#include <qgeocodingmanagerengine.h>

Inheritance diagram for QGeoCodingManagerEngine:

Collaboration diagram for QGeoCodingManagerEngine:

Signals
void	finished (QGeoCodeReply *reply)
	This signal is emitted when reply has finished processing.

void	errorOccurred (QGeoCodeReply *reply, QGeoCodeReply::Error error, const QString &errorString=QString())
	This signal is emitted when an error has been detected in the processing of reply.

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Public Member Functions
	QGeoCodingManagerEngine (const QVariantMap &parameters, QObject *parent=nullptr)
	Constructs a new engine with the specified parent, using parameters to pass any implementation specific data to the engine.

virtual	~QGeoCodingManagerEngine ()
	Destroys this engine.

QString	managerName () const
	Returns the name which this engine implementation uses to distinguish itself from the implementations provided by other plugins.

int	managerVersion () const
	Returns the version of this engine implementation.

virtual QGeoCodeReply *	geocode (const QGeoAddress &address, const QGeoShape &bounds)
	Begins the geocoding of address.

virtual QGeoCodeReply *	geocode (const QString &address, int limit, int offset, const QGeoShape &bounds)
	Begins geocoding for a location matching address.

virtual QGeoCodeReply *	reverseGeocode (const QGeoCoordinate &coordinate, const QGeoShape &bounds)
	Begins the reverse geocoding of coordinate.

void	setLocale (const QLocale &locale)
	Sets the locale to be used by this manager to locale.

QLocale	locale () const
	Returns the locale used to hint to this geocoding manager about what language to use for the results.

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

virtual	~QObject ()
	Destroys the object, deleting all its child objects.

virtual bool	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.

bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).

QThread *	thread () const
	Returns the thread in which the object lives.

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

const QObjectList &	children () const
	Returns a list of child objects.

void	setParent (QObject *parent)
	Makes the object a child of parent.

void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.

void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const

bool	disconnect (const QObject receiver, const char member=nullptr) const

void	dumpObjectTree () const
	Dumps a tree of children to the debug output.

void	dumpObjectInfo () const
	Dumps information about signal connections, etc.

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.

bool	setProperty (const char *name, QVariant &&value)

QVariant	property (const char *name) const
	Returns the value of the object's name property.

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const
	Returns a pointer to the parent object.

bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Friends
class	QGeoServiceProvider

class	QGeoServiceProviderPrivate

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.

int	senderSignalIndex () const

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

\inmodule QtLocation

Since: 5.6

The QGeoCodingManagerEngine class provides an interface and convenience methods to implementers of QGeoServiceProvider plugins who want to provide support for geocoding operations.

Note: There are no source or binary compatibility guarantees for the backend classes. The API is only guaranteed to work with the Qt version it was developed against. API changes will however only be made in minor releases. (6.6, 6.7, and so on.)

In the default implementation, supportsGeocoding() and supportsReverseGeocoding() returns false while geocode() and reverseGeocode() cause QGeoCodeReply::UnsupportedOptionError to occur.

If the service provider supports geocoding the subclass should provide an implementation of geocode() and call setSupportsGeocoding(true) at some point in time before geocode() is called.

Similarly, if the service provider supports reverse geocoding the subclass should provide an implementation reverseGeocode() and call setSupportsReverseGeocoding(true) at some point in time before reverseGeocode() is called.

A subclass of QGeoCodingManagerEngine will often make use of a subclass fo QGeoCodeReply internally, in order to add any engine-specific data (such as a QNetworkReply object for network-based services) to the QGeoCodeReply instances used by the engine.

See also: QGeoCodingManager

Definition at line 18 of file qgeocodingmanagerengine.h.

Constructor & Destructor Documentation

◆ QGeoCodingManagerEngine()

QGeoCodingManagerEngine::QGeoCodingManagerEngine	(	const QVariantMap &	parameters,
		QObject *	parent = nullptr )

explicit

Constructs a new engine with the specified parent, using parameters to pass any implementation specific data to the engine.

Definition at line 54 of file qgeocodingmanagerengine.cpp.

◆ ~QGeoCodingManagerEngine()

QGeoCodingManagerEngine::~QGeoCodingManagerEngine ( )

virtual

Destroys this engine.

Definition at line 64 of file qgeocodingmanagerengine.cpp.

Member Function Documentation

◆ errorOccurred

void QGeoCodingManagerEngine::errorOccurred	(	QGeoCodeReply *	reply,
		QGeoCodeReply::Error	error,
		const QString &	errorString = QString() )

signal

This signal is emitted when an error has been detected in the processing of reply.

The QGeoCodingManagerEngine::finished() signal will probably follow.

The error will be described by the error code error. If errorString is not empty it will contain a textual description of the error.

This signal and QGeoCodeReply::errorOccurred() will be emitted at the same time.

Note: Do not delete the reply object in the slot connected to this signal. Use deleteLater() instead.

◆ finished

void QGeoCodingManagerEngine::finished ( QGeoCodeReply * reply )

signal

This signal is emitted when reply has finished processing.

If reply::error() equals QGeoCodeReply::NoError then the processing finished successfully.

This signal and QGeoCodeReply::finished() will be emitted at the same time.

Note: Do not delete the reply object in the slot connected to this signal. Use deleteLater() instead.

◆ geocode() [1/2]

QGeoCodeReply * QGeoCodingManagerEngine::geocode	(	const QGeoAddress &	address,
		const QGeoShape &	bounds )

virtual

Begins the geocoding of address.

Geocoding is the process of finding a coordinate that corresponds to a given address.

A QGeoCodeReply object will be returned, which can be used to manage the geocoding operation and to return the results of the operation.

This engine and the returned QGeoCodeReply object will emit signals indicating if the operation completes or if errors occur.

If supportsGeocoding() returns false an QGeoCodeReply::UnsupportedOptionError will occur.

Once the operation has completed, QGeoCodeReply::locations() can be used to retrieve the results, which will consist of a list of QGeoLocation objects. These objects represent a combination of coordinate and address data.

The address data returned in the results may be different from address. This will usually occur if the geocoding service backend uses a different canonical form of addresses or if address was only partially filled out.

If bounds is non-null and a valid QGeoShape it will be used to limit the results to those that are contained by bounds. This is particularly useful if address is only partially filled out, as the service will attempt to geocode all matches for the specified data.

The user is responsible for deleting the returned reply object, although this can be done in the slot connected to QGeoCodingManagerEngine::finished(), QGeoCodingManagerEngine::errorOccurred(), QGeoCodeReply::finished() or QGeoCodeReply::errorOccurred() with deleteLater().

Reimplemented in GeoCodingManagerEngineEsri, QGeoCodingManagerEngineMapbox, QGeoCodingManagerEngineNokia, and QGeoCodingManagerEngineOsm.

Definition at line 146 of file qgeocodingmanagerengine.cpp.

◆ geocode() [2/2]

QGeoCodeReply * QGeoCodingManagerEngine::geocode	(	const QString &	address,
		int	limit,
		int	offset,
		const QGeoShape &	bounds )

virtual

Begins geocoding for a location matching address.

A QGeoCodeReply object will be returned, which can be used to manage the geocoding operation and to return the results of the operation.

This engine and the returned QGeoCodeReply object will emit signals indicating if the operation completes or if errors occur.

Once the operation has completed, QGeoCodeReply::locations() can be used to retrieve the results, which will consist of a list of QGeoLocation objects. These objects represent a combination of coordinate and address data.

If limit is -1 the entire result set will be returned, otherwise at most limit results will be returned.

The offset parameter is used to ask the geocoding service to not return the first offset results.

The limit and offset results are used together to implement paging.

If bounds is non-null and a valid QGeoShape it will be used to limit the results to those that are contained by bounds.

The user is responsible for deleting the returned reply object, although this can be done in the slot connected to QGeoCodingManagerEngine::finished(), QGeoCodingManagerEngine::errorOccurred(), QGeoCodeReply::finished() or QGeoCodeReply::errorOccurred() with deleteLater().

Reimplemented in GeoCodingManagerEngineEsri, QGeoCodingManagerEngineMapbox, QGeoCodingManagerEngineNokia, and QGeoCodingManagerEngineOsm.

Definition at line 229 of file qgeocodingmanagerengine.cpp.

◆ locale()

QLocale QGeoCodingManagerEngine::locale ( ) const

Returns the locale used to hint to this geocoding manager about what language to use for the results.

Definition at line 260 of file qgeocodingmanagerengine.cpp.

◆ managerName()

QString QGeoCodingManagerEngine::managerName ( ) const

Returns the name which this engine implementation uses to distinguish itself from the implementations provided by other plugins.

The combination of managerName() and managerVersion() should be unique amongst plugin implementations.

Definition at line 88 of file qgeocodingmanagerengine.cpp.

◆ managerVersion()

int QGeoCodingManagerEngine::managerVersion ( ) const

Returns the version of this engine implementation.

The combination of managerName() and managerVersion() should be unique amongst plugin implementations.

Definition at line 110 of file qgeocodingmanagerengine.cpp.

◆ reverseGeocode()

QGeoCodeReply * QGeoCodingManagerEngine::reverseGeocode	(	const QGeoCoordinate &	coordinate,
		const QGeoShape &	bounds )

virtual

Begins the reverse geocoding of coordinate.

Reverse geocoding is the process of finding an address that corresponds to a given coordinate.

A QGeoCodeReply object will be returned, which can be used to manage the reverse geocoding operation and to return the results of the operation.

This engine and the returned QGeoCodeReply object will emit signals indicating if the operation completes or if errors occur.

If supportsReverseGeocoding() returns false an QGeoCodeReply::UnsupportedOptionError will occur.

At that point QGeoCodeReply::locations() can be used to retrieve the results, which will consist of a list of QGeoLocation objects. These objects represent a combination of coordinate and address data.

The coordinate data returned in the results may be different from coordinate. This will usually occur if the reverse geocoding service backend shifts the coordinates to be closer to the matching addresses, or if the backend returns results at multiple levels of detail.

If multiple results are returned by the reverse geocoding service backend they will be provided in order of specificity. This normally occurs if the backend is configured to reverse geocode across multiple levels of detail. As an example, some services will return address and coordinate pairs for the street address, the city, the state and the country.

If bounds is non-null and a valid QGeoShape it will be used to limit the results to those that are contained by bounds.

The user is responsible for deleting the returned reply object, although this can be done in the slot connected to QGeoCodingManagerEngine::finished(), QGeoCodingManagerEngine::errorOccurred(), QGeoCodeReply::finished() or QGeoCodeReply::errorOccurred() with deleteLater().

Reimplemented in GeoCodingManagerEngineEsri, QGeoCodingManagerEngineMapbox, QGeoCodingManagerEngineNokia, and QGeoCodingManagerEngineOsm.

Definition at line 191 of file qgeocodingmanagerengine.cpp.