QGeoSatelliteInfo Class
The QGeoSatelliteInfo class contains basic information about a satellite. 更多...
| 头文件: | #include <QGeoSatelliteInfo> |
| qmake: | QT += positioning |
| 开始支持版本: | Qt 5.2 |
公有类型
| enum | Attribute { Elevation, Azimuth } |
| enum | SatelliteSystem { Undefined, GPS, GLONASS } |
公有函数
| 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
The QGeoSatelliteInfo class contains basic information about a satellite.
成员类型
enum QGeoSatelliteInfo::Attribute
Defines the attributes for the satellite information.
| Constant | Value | Description |
|---|---|---|
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.
| Constant | Value | Description |
|---|---|---|
QGeoSatelliteInfo::Undefined | 0x00 | Not defined. |
QGeoSatelliteInfo::GPS | 0x01 | Global Positioning System (USA). |
QGeoSatelliteInfo::GLONASS | 0x02 | Global Positioning System (Russia). |
成员函数
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(Attribute attribute) const
Returns the value of the specified attribute as a qreal value.
Returns -1 if the value has not been set.
参见 hasAttribute() and setAttribute().
bool QGeoSatelliteInfo::hasAttribute(Attribute attribute) const
Returns true if the specified attribute is present in this update.
void QGeoSatelliteInfo::removeAttribute(Attribute attribute)
Removes the specified 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.
参见 setSatelliteIdentifier().
SatelliteSystem QGeoSatelliteInfo::satelliteSystem() const
Returns the Satellite System (GPS, GLONASS, ...)
参见 setSatelliteSystem().
void QGeoSatelliteInfo::setAttribute(Attribute attribute, qreal value)
Sets the value for attribute to value.
参见 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.
参见 satelliteIdentifier().
void QGeoSatelliteInfo::setSatelliteSystem(SatelliteSystem system)
Sets the Satellite System (GPS, GLONASS, ...) to system.
参见 satelliteSystem().
void QGeoSatelliteInfo::setSignalStrength(int signalStrength)
Sets the signal strength to signalStrength, in decibels.
参见 signalStrength().
int QGeoSatelliteInfo::signalStrength() const
Returns the signal strength, or -1 if the value has not been set.
参见 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 to this object.
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)
Writes the given info to the specified stream.
参见 Format of the QDataStream operators.
QDataStream &operator>>(QDataStream &stream, QGeoSatelliteInfo &info)
Reads satellite information from the specified stream into the given info.