内容

• 公共类型
• 公共函数
• 相关非成员
• 详细描述

QGeoSatelliteInfo Class

QGeoSatelliteInfo class contains basic information about a satellite. 更多...

头：	#include <QGeoSatelliteInfo>
qmake:	QT += positioning
Since:	Qt 5.2

• 所有成员列表，包括继承成员

公共类型

enum	属性 { Elevation, Azimuth }
enum	SatelliteSystem { Undefined, GPS, GLONASS }

公共函数

	QGeoSatelliteInfo ()
	QGeoSatelliteInfo (const QGeoSatelliteInfo & other )
	~QGeoSatelliteInfo ()
qreal	attribute (Attribute attribute ) const
bool	hasAttribute (Attribute attribute ) const
void	removeAttribute (Attribute attribute )
int	satelliteIdentifier () const
SatelliteSystem	satelliteSystem () const
void	setAttribute (Attribute attribute , qreal value )
void	setSatelliteIdentifier (int satId )
void	setSatelliteSystem (SatelliteSystem system )
void	setSignalStrength (int signalStrength )
int	signalStrength () const
bool	operator!= (const QGeoSatelliteInfo & other ) const
QGeoSatelliteInfo &	operator= (const QGeoSatelliteInfo & other )
bool	operator== (const QGeoSatelliteInfo & other ) const

相关非成员

QDataStream &	operator<< (QDataStream & stream , const QGeoSatelliteInfo & info )
QDataStream &	operator>> (QDataStream & stream , QGeoSatelliteInfo & info )

详细描述

QGeoSatelliteInfo class contains basic information about a satellite.

另请参阅 QGeoSatelliteInfoSource .

成员类型文档编制

enum QGeoSatelliteInfo:: 属性

Defines the attributes for the satellite information.

常量	值	描述
QGeoSatelliteInfo::Elevation	0	The elevation of the satellite, in degrees.
QGeoSatelliteInfo::Azimuth	1	The azimuth to true north, in degrees.

enum QGeoSatelliteInfo:: SatelliteSystem

Defines the GNSS system of the satellite.

常量	值	描述
QGeoSatelliteInfo::Undefined	0x00	Not defined.
QGeoSatelliteInfo::GPS	0x01	Global Positioning System (USA).
QGeoSatelliteInfo::GLONASS	0x02	Global Positioning System (Russia).

成员函数文档编制

QGeoSatelliteInfo:: QGeoSatelliteInfo ()

Creates a satellite information object.

QGeoSatelliteInfo:: QGeoSatelliteInfo (const QGeoSatelliteInfo & other )

Creates a satellite information object with the values of other .

QGeoSatelliteInfo:: ~QGeoSatelliteInfo ()

Destroys a satellite information object.

qreal QGeoSatelliteInfo:: attribute ( 属性 attribute ) const

Returns the value of the specified attribute as a qreal value.

Returns -1 if the value has not been set.

另请参阅 hasAttribute () 和 setAttribute ().

bool QGeoSatelliteInfo:: hasAttribute ( 属性 attribute ) const

返回 true 若指定 attribute is present in this update.

void QGeoSatelliteInfo:: removeAttribute ( 属性 attribute )

移除指定 attribute and its value.

int QGeoSatelliteInfo:: satelliteIdentifier () const

Returns the satellite identifier number.

The satellite identifier number can be used to identify a satellite inside the satellite system. For satellite system GPS the satellite identifier number represents the PRN (Pseudo-random noise) number. For satellite system GLONASS the satellite identifier number represents the slot number.

另请参阅 setSatelliteIdentifier ().

SatelliteSystem QGeoSatelliteInfo:: satelliteSystem () const

Returns the Satellite System (GPS, GLONASS, ...)

另请参阅 setSatelliteSystem ().

void QGeoSatelliteInfo:: setAttribute ( 属性 attribute , qreal value )

Sets the value for attribute to value .

另请参阅 attribute ().

void QGeoSatelliteInfo:: setSatelliteIdentifier ( int satId )

Sets the satellite identifier number to satId .

The satellite identifier number can be used to identify a satellite inside the satellite system. For satellite system GPS the satellite identifier number represents the PRN (Pseudo-random noise) number. For satellite system GLONASS the satellite identifier number represents the slot number.

另请参阅 satelliteIdentifier ().

void QGeoSatelliteInfo:: setSatelliteSystem ( SatelliteSystem system )

Sets the Satellite System (GPS, GLONASS, ...) to system .

另请参阅 satelliteSystem ().

void QGeoSatelliteInfo:: setSignalStrength ( int signalStrength )

Sets the signal strength to signalStrength , in decibels.

另请参阅 signalStrength ().

int QGeoSatelliteInfo:: signalStrength () const

Returns the signal strength, or -1 if the value has not been set.

另请参阅 setSignalStrength ().

bool QGeoSatelliteInfo:: operator!= (const QGeoSatelliteInfo & other ) const

Returns true if any of the information for this satellite are not the same as those of other .

QGeoSatelliteInfo &QGeoSatelliteInfo:: operator= (const QGeoSatelliteInfo & other )

Assigns the values from other 到此对象。

bool QGeoSatelliteInfo:: operator== (const QGeoSatelliteInfo & other ) const

Returns true if all the information for this satellite are the same as those of other .

相关非成员

QDataStream & operator<< ( QDataStream & stream , const QGeoSatelliteInfo & info )

写入给定 info 到指定 stream .

另请参阅 QDataStream 运算符格式 .

QDataStream & operator>> ( QDataStream & stream , QGeoSatelliteInfo & info )

Reads satellite information from the specified stream 进给定 info .

另请参阅 QDataStream 运算符格式 .