QPressureReading

Since: Units}

#include <QtSensors/QPressureReading>

QtSensors

The QPressureReading class holds readings from the pressure sensor.


Overview

Inheritance

QSensorReading
QPressureReading

Properties Index

qrealpressure [read-only]
qrealtemperature [read-only]
QtMobility::qtimestamptimestamp [read-only]Inherited

Public Functions Index

qrealpressure () const
voidsetPressure (qreal pressure)
voidsetTemperature (qreal temperature)
qrealtemperature () const
voidsetTimestamp (qtimestamp timestamp)Inherited
qtimestamptimestamp () const Inherited
QVariantvalue (int index) const Inherited
intvalueCount () const Inherited

Protected Functions Index

Only has inherited protected functions

virtual voidcopyValuesFrom (QSensorReading *other)Inherited
QScopedPointer< QSensorReadingPrivate > *d_ptr ()Inherited
QSensorReading (QObject *parent, QSensorReadingPrivate *d)Inherited

Properties

qreal pressure[read-only]

The measured atmospheric pressure.

Returned as Pascals.

See also:

{QPressureReading Units}

qreal temperature[read-only]

The pressure sensor's temperature.

The temperature is returned in degree Celsius. This property provides the pressure sensor die temperature. Note that this temperature may be (and usually is) different than the temperature reported from QAmbientTemperatureSensor.

QtMobility::qtimestamp timestampInherited[read-only]

the timestamp of the reading.

See also:

qtimestamp

Since:

1.0

,

1.0

Public Functions

qreal pressure ()

void setPressure (
  • qrealpressure)

Sets the pressure to pressure.

void setTemperature (
  • qrealtemperature)

Sets the pressure sensor's temperature to temperature.

qreal temperature ()

void setTimestamp (Inherited

Sets the timestamp of the reading.

Since:

1.0

qtimestamp timestamp ()Inherited

QVariant value (
  • intindex)
Inherited

Returns the value of the property at index.

Note that this function is slower than calling the data function directly.

Here is an example of getting a property via the different mechanisms available.

Accessing directly provides the best performance but requires compile-time knowledge of the data you are accessing.

QAccelerometerReading *reading = ...;
qreal x = reading->x();

You can also access a property by name. To do this you must call QObject::property().

qreal x = reading->property("x").value<qreal>();

Finally, you can access values via numeric index.

qreal x = reading->value(0).value<qreal>();

Note that value() can only access properties declared with Q_PROPERTY() in sub-classes of QSensorReading.

See also:

valueCount(), QObject::property()

Since:

1.0

int valueCount ()Inherited

Returns the number of extra properties that the reading has.

Note that this does not count properties declared in QSensorReading.

As an example, this returns 3 for QAccelerometerReading because there are 3 properties defined in that class.
Since:

1.0

Protected Functions

(Only has inherited protected functions)

virtual void copyValuesFrom (Inherited

QScopedPointer< QSensorReadingPrivate > * d_ptr ()Inherited

QSensorReading (
  • QObject *parent,
  • QSensorReadingPrivate *d )
Inherited

Last modified: 2014-06-24



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