The QLowEnergyDescriptorData class is used to create GATT service data. \inmodule QtBluetooth. More...

#include <qlowenergydescriptordata.h>

Collaboration diagram for QLowEnergyDescriptorData:

Public Member Functions
	QLowEnergyDescriptorData ()
	Creates a new invalid object of this class.

	QLowEnergyDescriptorData (const QBluetoothUuid &uuid, const QByteArray &value)
	Creates a new object of this class with UUID and value being provided by uuid and value, respectively.

	QLowEnergyDescriptorData (const QLowEnergyDescriptorData &other)
	Constructs a new object of this class that is a copy of other.

	~QLowEnergyDescriptorData ()
	Destroys this object.

QLowEnergyDescriptorData &	operator= (const QLowEnergyDescriptorData &other)
	Makes this object a copy of other and returns the new value of this object.

QByteArray	value () const
	Returns the value of this descriptor.

void	setValue (const QByteArray &value)
	Sets the value of this descriptor to value.

QBluetoothUuid	uuid () const
	Returns the UUID of this descriptor.

void	setUuid (const QBluetoothUuid &uuid)
	Sets the UUID of this descriptor to uuid.

bool	isValid () const
	Returns true if and only if this object has a non-null UUID.

void	setReadPermissions (bool readable, QBluetooth::AttAccessConstraints constraints=QBluetooth::AttAccessConstraints())
	Specifies whether the value of this descriptor is readable and if so, under which constraints.

bool	isReadable () const
	Returns `true` if the value of this descriptor is readable and `false` otherwise.

QBluetooth::AttAccessConstraints	readConstraints () const
	Returns the constraints under which the value of this descriptor can be read.

void	setWritePermissions (bool writable, QBluetooth::AttAccessConstraints constraints=QBluetooth::AttAccessConstraints())
	Specifies whether the value of this descriptor is writable and if so, under which constraints.

bool	isWritable () const
	Returns `true` if the value of this descriptor is writable and `false` otherwise.

QBluetooth::AttAccessConstraints	writeConstraints () const
	Returns the constraints under which the value of this descriptor can be written.

void	swap (QLowEnergyDescriptorData &other) noexcept
	Swaps this object with other.

Friends
bool	operator== (const QLowEnergyDescriptorData &a, const QLowEnergyDescriptorData &b)
	Returns `true` if a and b are equal with respect to their public state, otherwise returns `false`.

bool	operator!= (const QLowEnergyDescriptorData &a, const QLowEnergyDescriptorData &b)
	Returns `true` if a and b are unequal with respect to their public state, otherwise returns `false`.

Detailed Description

The QLowEnergyDescriptorData class is used to create GATT service data. \inmodule QtBluetooth.

Since: 5.7

An object of this class provides a descriptor to be added to a \l QLowEnergyCharacteristicData object via \l QLowEnergyCharacteristicData::addDescriptor().

Note: The member functions related to access permissions are only applicable to those types of descriptors for which the Bluetooth specification does not prescribe if and how their values can be accessed.

See also: QLowEnergyCharacteristicData; QLowEnergyServiceData; QLowEnergyController::addService

Definition at line 16 of file qlowenergydescriptordata.h.

Constructor & Destructor Documentation

◆ QLowEnergyDescriptorData() [1/3]

QLowEnergyDescriptorData::QLowEnergyDescriptorData ( )

Creates a new invalid object of this class.

Definition at line 42 of file qlowenergydescriptordata.cpp.

◆ QLowEnergyDescriptorData() [2/3]

QLowEnergyDescriptorData::QLowEnergyDescriptorData	(	const QBluetoothUuid &	uuid,
		const QByteArray &	value )

Creates a new object of this class with UUID and value being provided by uuid and value, respectively.

Definition at line 50 of file qlowenergydescriptordata.cpp.

References setUuid(), setValue(), and uuid().

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◆ QLowEnergyDescriptorData() [3/3]

QLowEnergyDescriptorData::QLowEnergyDescriptorData ( const QLowEnergyDescriptorData & other )

Constructs a new object of this class that is a copy of other.

Definition at line 59 of file qlowenergydescriptordata.cpp.

◆ ~QLowEnergyDescriptorData()

QLowEnergyDescriptorData::~QLowEnergyDescriptorData ( )

Destroys this object.

Definition at line 65 of file qlowenergydescriptordata.cpp.

Member Function Documentation

◆ isReadable()

bool QLowEnergyDescriptorData::isReadable ( ) const

Returns true if the value of this descriptor is readable and false otherwise.

Definition at line 122 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::readable.

Referenced by setupDescPermissions().

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◆ isValid()

bool QLowEnergyDescriptorData::isValid ( ) const

Returns true if and only if this object has a non-null UUID.

Definition at line 104 of file qlowenergydescriptordata.cpp.

References QUuid::isNull(), and uuid().

Referenced by QLowEnergyCharacteristicData::addDescriptor().

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◆ isWritable()

bool QLowEnergyDescriptorData::isWritable ( ) const

Returns true if the value of this descriptor is writable and false otherwise.

Definition at line 149 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::writable.

Referenced by setupDescPermissions().

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◆ operator=()

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

Makes this object a copy of other and returns the new value of this object.

Definition at line 70 of file qlowenergydescriptordata.cpp.

References other().

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◆ readConstraints()

QBluetooth::AttAccessConstraints QLowEnergyDescriptorData::readConstraints ( ) const

Returns the constraints under which the value of this descriptor can be read.

This value is only relevant if \l isReadable() returns true.

Definition at line 131 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::readConstraints.

Referenced by setupDescPermissions().

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◆ setReadPermissions()

void QLowEnergyDescriptorData::setReadPermissions	(	bool	readable,
		QBluetooth::AttAccessConstraints	constraints = QBluetooth::AttAccessConstraints() )

Specifies whether the value of this descriptor is readable and if so, under which constraints.

See also: setWritePermissions()

Definition at line 114 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::readable, and QLowEnergyDescriptorDataPrivate::readConstraints.

◆ setUuid()

void QLowEnergyDescriptorData::setUuid ( const QBluetoothUuid & uuid )

Sets the UUID of this descriptor to uuid.

Definition at line 98 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::uuid, and uuid().

Referenced by QLowEnergyDescriptorData().

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◆ setValue()

void QLowEnergyDescriptorData::setValue ( const QByteArray & value )

Sets the value of this descriptor to value.

It will be sent to a peer device exactly the way it is provided here, so callers need to take care of things such as endianness.

Definition at line 86 of file qlowenergydescriptordata.cpp.

References QLowEnergyDescriptorDataPrivate::value, and value().

Referenced by QLowEnergyDescriptorData().

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◆ setWritePermissions()

void QLowEnergyDescriptorData::setWritePermissions	(	bool	writable,
		QBluetooth::AttAccessConstraints	constraints = QBluetooth::AttAccessConstraints() )