QGraphicsGeoMap Class Reference

 #include <QGraphicsGeoMap>

Member Function Documentation

QGraphicsGeoMap::QGraphicsGeoMap ( QGeoMappingManager * manager, QGraphicsItem * parent = 0 )

Creates a new mapping widget, with the mapping operations managed by manager, and the specified parent.

Note that the manager will typically be accessed from an instance of QGeoServiceProvider:

 QGeoServiceProvider serviceProvider("nokia");
 QGeoMappingManager *manager = serviceProvider.mappingManager();
 QGraphicsGeoMap *widget = new QGraphicsGeoMap(manager);

QGraphicsGeoMap::~QGraphicsGeoMap () [virtual]

Destroys this map widget.

void QGraphicsGeoMap::addMapObject ( QGeoMapObject * mapObject )

Adds mapObject to the list of map objects managed by this widget.

If mapObject is within the viewport of the map and QGeoMapObject::isVisible() returns true then the map will display the map object immediately.

The map will take ownership of the mapObject.

If supportsCustomMapObject() returns false and mapObject is a custom map object then mapObject will not be added to the map.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::addMapOverlay ( QGeoMapOverlay * overlay )

Adds overlay to the list of map overlays associated with this map.

The overlays will be drawn in the order in which they were added.

The map will take ownership of overlay.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::bearingChanged ( qreal bearing ) [signal]

This signal is emitted when the bearing of the map changes.

The new value is bearing.

This signal will not be emitted if supportsBearing() returns false.

This function was introduced in Qt Mobility 1.2.

void QGraphicsGeoMap::centerChanged ( const QGeoCoordinate & coordinate ) [signal]

This signal is emitted when the center of the map changes.

The new value is coordinate.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::clearMapObjects ()

Clears the map objects associated with this map.

The map objects will be deleted.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::clearMapOverlays ()

Clears the map overlays associated with this map.

The map overlays will be deleted.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::connectivityModeChanged ( QGraphicsGeoMap::ConnectivityMode connectivityMode ) [signal]

This signal is emitted when the connectivity mode used to fetch the map data changes.

The new value is connectivityMode.

This function was introduced in Qt Mobility 1.1.

QPointF QGraphicsGeoMap::coordinateToScreenPosition ( const QGeoCoordinate & coordinate ) const

Returns the position on the screen at which coordinate is displayed.

An invalid QPointF will be returned if coordinate is invalid or is not within the current viewport.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::fitInViewport ( const QGeoBoundingBox & bounds, bool preserveViewportCenter = false )

Attempts to fit the bounding box bounds into the viewport of the map.

This method will change the zoom level to the maximum zoom level such that all of bounds is visible within the resulting viewport.

If preserveViewportCenter is false the map will be centered on the bounding box bounds before the zoom level is changed, otherwise the center of the map will not be changed.

This function was introduced in Qt Mobility 1.1.

QList<QGeoMapObject *> QGraphicsGeoMap::mapObjects () const

Returns the map objects associated with this map.

This function was introduced in Qt Mobility 1.1.

QList<QGeoMapObject *> QGraphicsGeoMap::mapObjectsAtScreenPosition ( const QPointF & screenPosition ) const

Returns the list of visible map objects managed by this widget which contain the point screenPosition within their boundaries.

This function was introduced in Qt Mobility 1.1.

QList<QGeoMapObject *> QGraphicsGeoMap::mapObjectsInScreenRect ( const QRectF & screenRect ) const

Returns the list of visible map objects managed by this widget which are displayed at least partially within the on screen rectangle screenRect.

This function was introduced in Qt Mobility 1.1.

QList<QGeoMapObject *> QGraphicsGeoMap::mapObjectsInViewport () const

Returns the list of visible map objects manager by this widget which are displayed at least partially within the viewport of the map.

This function was introduced in Qt Mobility 1.1.

QList<QGeoMapOverlay *> QGraphicsGeoMap::mapOverlays () const

Returns the map overlays associated with this map.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::mapTypeChanged ( QGraphicsGeoMap::MapType mapType ) [signal]

This signal is emitted when the map type changes.

The new value is mapType.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::paint ( QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * parent ) [virtual]

Reimplemented from QGraphicsItem::paint().

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::pan ( int dx, int dy ) [slot]

Pans the map view dx pixels in the x direction and dy pixels in the y direction.

The x and y axes are specified in Graphics View Framework coordinates. By default this will mean that positive values of dx move the viewed area to the right and that positive values of dy move the viewed area down.

After the panning has occurred the centerChanged() signal will be emitted.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::removeMapObject ( QGeoMapObject * mapObject )

Removes mapObject from the list of map objects managed by this widget.

If mapObject is within the viewport of the map and QGeoMapObject::isVisible() returns true then the map will stop displaying the map object immediately.

The map will release ownership of the mapObject.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::removeMapOverlay ( QGeoMapOverlay * overlay )

Removes overlay from the list of map overlays associated with this map.

The map will release ownership of overlay.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::resizeEvent ( QGraphicsSceneResizeEvent * event ) [virtual protected]

Reimplemented from QGraphicsWidget::resizeEvent().

This function was introduced in Qt Mobility 1.1.

QGeoCoordinate QGraphicsGeoMap::screenPositionToCoordinate ( QPointF screenPosition ) const

Returns the coordinate corresponding to the point in the viewport at screenPosition.

An invalid QGeoCoordinate will be returned if screenPosition is invalid or is not within the current viewport.

This function was introduced in Qt Mobility 1.1.

QPainterPath QGraphicsGeoMap::shape () const [virtual]

Reimplemented from QGraphicsItem::shape().

This function was introduced in Qt Mobility 1.1.

QList<ConnectivityMode> QGraphicsGeoMap::supportedConnectivityModes () const

Returns the connectivity modes supported by the QGeoMappingManager associated with this widget.

This function was introduced in Qt Mobility 1.1.

QList<MapType> QGraphicsGeoMap::supportedMapTypes () const

Returns the map types supported by the QGeoMappingManager associated with this widget.

This function was introduced in Qt Mobility 1.1.

bool QGraphicsGeoMap::supportsCustomMapObjects () const

Returns whether custom map objects are supported by this engine.

Custom map objects are map objects based on QGraphicsItem instances, which are hard to support in cases where the map rendering is not being performed by the Qt Graphics View framwork.

This function was introduced in Qt Mobility 1.2.

void QGraphicsGeoMap::tiltChanged ( qreal tilt ) [signal]

This signal is emitted when the tilt of the map changes.

The new value is tilt.

This signal will not be emitted if supportsTilting() returns false.

This function was introduced in Qt Mobility 1.2.

QGeoBoundingBox QGraphicsGeoMap::viewport () const

Returns a bounding box corresponding to the physical area displayed in the viewport of the map.

The bounding box which is returned is defined by the upper left and lower right corners of the visible area of the map.

This function was introduced in Qt Mobility 1.1.

void QGraphicsGeoMap::zoomLevelChanged ( qreal zoomLevel ) [signal]

This signal is emitted when the zoom level of the map changes.

The new value is zoomLevel.

This function was introduced in Qt Mobility 1.1.