QtPdCom::PdVariable Class Reference

Scalar/Vector/Matrix Variant to be used in QML applications. More...

#include <PdVariable.h>

Inheritance diagram for QtPdCom::PdVariable:

Collaboration diagram for QtPdCom::PdVariable:

Classes
class	Impl

Signals
void	valueChanged ()
	Emitted, when the value changes, or the variable is disconnected. More...
void	valueUpdated (std::chrono::nanoseconds mtime)
	Emitted also when value does not change but got an update from the msr process. More...
void	pathChanged (QString)
void	connectionChanged ()
void	dataPresentChanged (bool)

Public Member Functions
	PdVariable (QObject *=Q_NULLPTR)
	Constructor. More...
	~PdVariable ()
	Destructor. More...
void	clearVariable ()
	Unsubscribe from a Variable. More...
bool	hasVariable () const
	Connected state. More...
void	clearData ()
QVariant	getValue () const
Q_INVOKABLE void	setValue (QVariant)
QString	getValueAsString () const
Q_INVOKABLE void	setValueAsString (QString)
bool	getDataPresent ()
std::chrono::nanoseconds	getMTime () const
double	getMTimeToDouble () const
PdConnection	getConnection ()
void	setConnection (PdConnection const &)
void	updateConnection ()
	(re)connects to variable More...
Q_INVOKABLE void	inc ()
	Increments the current value and writes it to the process. More...

Properties
QtPdCom::PdConnection	connection
	Connection property which describes the variable to connect to. More...
bool	connected
	Indicates that the process is connected and data is transfered. More...
QVariant	value
	Process value. More...
QString	text
	Interpret the elements of an process variable array as string. More...
QVariant	mtime
	Last modification time of the process variable. More...

Private Attributes
class Q_DECL_HIDDEN	Impl
std::unique_ptr< Impl >	impl

Detailed Description

Scalar/Vector/Matrix Variant to be used in QML applications.

Constructor & Destructor Documentation

PdVariable()

PdVariable::PdVariable

(

QObject *

parent = Q_NULLPTR

)

Constructor.

~PdVariable()

PdVariable::~PdVariable

(

)

Destructor.

References clearVariable().

Member Function Documentation

clearData()

void PdVariable::clearData

(

)

References dataPresentChanged(), impl, and valueChanged().

Referenced by clearVariable(), and updateConnection().

clearVariable()

void PdVariable::clearVariable

(

)

Unsubscribe from a Variable.

References clearData(), dataPresentChanged(), and impl.

Referenced by updateConnection(), and ~PdVariable().

connectionChanged

void QtPdCom::PdVariable::connectionChanged ( )

signal

Referenced by updateConnection().

dataPresentChanged

void QtPdCom::PdVariable::dataPresentChanged ( bool  )

signal

Referenced by clearData(), clearVariable(), QtPdCom::PdVariable::Impl::Subscription::newValues(), and QtPdCom::PdVariable::Impl::Subscription::stateChanged().

getConnection()

QtPdCom::PdConnection PdVariable::getConnection

(

)

References impl.

getDataPresent()

bool PdVariable::getDataPresent

(

)

References impl.

getMTime()

std::chrono::nanoseconds PdVariable::getMTime

(

)

const

References impl.

getMTimeToDouble()

double PdVariable::getMTimeToDouble

(

)

const

References impl.

getValue()

QVariant PdVariable::getValue

(

)

const

References impl.

Referenced by inc().

getValueAsString()

QString PdVariable::getValueAsString

(

)

const

References impl.

hasVariable()

bool PdVariable::hasVariable

(

)

const

Connected state.

References impl.

inc()

void PdVariable::inc

(

)

Increments the current value and writes it to the process.

This does not update value directly.

References getValue(), and setValue().

pathChanged

void QtPdCom::PdVariable::pathChanged ( QString  )

signal

setConnection()

void PdVariable::setConnection

(

QtPdCom::PdConnection const &

conn

)

References impl, and updateConnection().

setValue()

void PdVariable::setValue

(

QVariant

value

)

References impl, setValueAsString(), and value.

Referenced by inc().

setValueAsString()

void PdVariable::setValueAsString

(

QString

value

)

References impl, and value.

Referenced by setValue().

updateConnection()

void PdVariable::updateConnection

(

)

(re)connects to variable

Subscribes to a ProcessVariable.

References clearData(), clearVariable(), connectionChanged(), QtPdCom::Process::disconnected(), QtPdCom::Process::error(), and impl.

Referenced by setConnection().

valueChanged

void QtPdCom::PdVariable::valueChanged ( )

signal

Emitted, when the value changes, or the variable is disconnected.

Referenced by clearData(), QtPdCom::PdVariable::Impl::Subscription::newValues(), and QtPdCom::PdVariable::Impl::Subscription::stateChanged().

valueUpdated

void QtPdCom::PdVariable::valueUpdated ( std::chrono::nanoseconds  mtime )

signal

Emitted also when value does not change but got an update from the msr process.

Referenced by QtPdCom::PdVariable::Impl::Subscription::newValues().

Member Data Documentation

Impl

class Q_DECL_HIDDEN QtPdCom::PdVariable::Impl

private

impl

std::unique_ptr<Impl> QtPdCom::PdVariable::impl

private

Referenced by clearData(), clearVariable(), getConnection(), getDataPresent(), getMTime(), getMTimeToDouble(), getValue(), getValueAsString(), hasVariable(), setConnection(), setValue(), setValueAsString(), and updateConnection().

Property Documentation

connected

bool QtPdCom::PdVariable::connected

read

Indicates that the process is connected and data is transfered.

connection

QtPdCom::PdConnection QtPdCom::PdVariable::connection

readwrite

Connection property which describes the variable to connect to.

connection {
    process: pdProcess // process instance, if null: use default.
    path: "/osc/cos"   // path (string)
    period: 0.2        // sample time, 0 for event,
                       // "poll" for manual poll mode,
                       // negative values for timer-basedpolling
    offset: 0.0        // offset (double), default 0
    scale: 1.0,        // scale (double), default 1.0
    tau:  0.0          // Low Pass Filter time constant
                       // (double, in seconds). if 0: no filter
}

The default Process instance is accessible via the DefaultProcess singleton which is instantiated when importing the QtPdCom library.

mtime

QVariant QtPdCom::PdVariable::mtime

read

Last modification time of the process variable.

text

QString QtPdCom::PdVariable::text

readwrite

Interpret the elements of an process variable array as string.

value

QVariant QtPdCom::PdVariable::value

readwrite

Process value.

Referenced by setValue(), and setValueAsString().

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The documentation for this class was generated from the following files:

• src/PdVariable.h
• src/PdVariable.cpp