DdtDataStreamWidget Class Reference

#include <ddtDataStreamWidget.hpp>

Inheritance diagram for DdtDataStreamWidget:

Public Slots
bool	PopulatePublisherListCombo (QString localbroker_uri, QString remotebroker_uri)

Signals
void	AttachDataStream (QString data_stream_id)
void	DetachDataStream (QString data_stream_id)
void	LastBrokerConnection (QString data_stream_id)
void	RefreshRateChanged (bool enabled, double interval_seconds)

Public Member Functions
	DdtDataStreamWidget (QWidget *parent=nullptr)
virtual	~DdtDataStreamWidget ()
void	set_logger (ddt::DdtLogger *in_logger)
Public Member Functions inherited from DdtWidget
	DdtWidget (QWidget *parent=nullptr)
	DdtWidget.
virtual	~DdtWidget ()=default
QWidget *	AddParentWidget (QLayout *child_layout)
	AddParentWidget This will add the given layout to a QGroupBox Widget to integrate in the parent layout.
void	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	connect Group of overloaded functions that use the QObject::connect method with the Qt::QueuedConnection flag. This defines Qt Signal and Slots connection the same way thought out the QApplication.
void	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
void	connect (const QObject *sender, const char *signal, const char *member)
template<typename Func1, typename Func2>
void	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *context, Func2 slot)
	connect Template version of QObject::connection with fixed Qt::QueuedConnection flag. Normally used to connect a signal with a lambda function.

Static Public Attributes
static constexpr unsigned	NEW_DATA_WATCHDOG_TIMEOUT = 1000

Protected Slots
void	AttachDataStream ()
void	DetachDataStream ()
void	SetDataStream (QString startup_data_stream)
void	CurrentStatus (QString stream_id, ConnectionStatus status)
void	FlickerStatus ()
void	ConnectionLost ()
void	DisplayURIsDialog ()
void	EmitRefreshRateChanged ()

Protected Attributes
ddt::DdtLogger *	logger
int	last_index_selected
QString	current_localbroker_uri
QString	current_remotebroker_uri

Detailed Description

Class for the Data Stream Widget that can be used to connect an Image Widget to a Data Stream

Constructor & Destructor Documentation

DdtDataStreamWidget()

DdtDataStreamWidget::DdtDataStreamWidget ( QWidget * parent = nullptr )

explicit

Constructor

Creates a DDT Data Stream Widget

Parameters

parent

Pointer to the parent widget

~DdtDataStreamWidget()

DdtDataStreamWidget::~DdtDataStreamWidget ( )

virtualdefault

Destructor

Member Function Documentation

AttachDataStream [1/2]

void DdtDataStreamWidget::AttachDataStream ( )

protectedslot

Slot that shall be called when the attach button was pressed

AttachDataStream [2/2]

void DdtDataStreamWidget::AttachDataStream ( QString data_stream_id )

signal

Signal that is send when a data stream shall be attached to the image widget

Parameters

data_stream_id

ID of the data stream to connect to (in first version the URI)

ConnectionLost

void DdtDataStreamWidget::ConnectionLost ( )

protectedslot

Slot called by the watchdog timer when no data has been received within the configured interval.

CurrentStatus

void DdtDataStreamWidget::CurrentStatus ( QString stream_id, ConnectionStatus status )

protectedslot

Receives the current status of a stream

DetachDataStream [1/2]

void DdtDataStreamWidget::DetachDataStream ( )

protectedslot

Slot that shall be called when the detach button was pressed

DetachDataStream [2/2]

void DdtDataStreamWidget::DetachDataStream ( QString data_stream_id )

signal

Signal that is send when the connected data stream should be disconnected

Parameters

data_stream_id

ID of the data stream

DisplayURIsDialog

void DdtDataStreamWidget::DisplayURIsDialog ( )

protectedslot

Create and show the dialog to input local and remote brokers URIs

EmitRefreshRateChanged

void DdtDataStreamWidget::EmitRefreshRateChanged ( )

protectedslot

Slot invoked when either the refresh-rate checkbox or spin box value changes; forwards the current state via RefreshRateChanged.

FlickerStatus

void DdtDataStreamWidget::FlickerStatus ( )

protectedslot

Reset the status when flickering the LED

LastBrokerConnection

void DdtDataStreamWidget::LastBrokerConnection ( QString data_stream_id )

signal

Signal that is send when datastream list is retrieve from a broker connection

Parameters

data_stream_id

ID of the data stream

PopulatePublisherListCombo

bool DdtDataStreamWidget::PopulatePublisherListCombo ( QString localbroker_uri, QString remotebroker_uri )

slot

Populate the combo box with the entries from a datastream list

RefreshRateChanged

void DdtDataStreamWidget::RefreshRateChanged ( bool enabled, double interval_seconds )

signal

Signal emitted when the user changes the image-display refresh-rate settings.

Parameters

enabled	true if the user enabled the refresh-rate limit
interval_seconds	Display probe interval in seconds (floating point); receivers should only actually display an incoming frame when at least this much time has elapsed since the last displayed frame. Ignored by receivers when enabled is false.

set_logger()

void DdtDataStreamWidget::set_logger

(

ddt::DdtLogger *

in_logger

)

Set logger

Parameters

in_logger

The logger object

SetDataStream

void DdtDataStreamWidget::SetDataStream ( QString startup_data_stream )

protectedslot

Slot that will receive the name of the startup data stream

Member Data Documentation

current_localbroker_uri

QString DdtDataStreamWidget::current_localbroker_uri

protected

Current URI of local Broker streaming data

current_remotebroker_uri

QString DdtDataStreamWidget::current_remotebroker_uri

protected

Current URI of remote Broker streaming data

last_index_selected

int DdtDataStreamWidget::last_index_selected

protected

Last

logger

ddt::DdtLogger* DdtDataStreamWidget::logger

protected

Logger object

NEW_DATA_WATCHDOG_TIMEOUT

unsigned DdtDataStreamWidget::NEW_DATA_WATCHDOG_TIMEOUT = 1000

staticconstexpr

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

• datavisualisation/widgetsdialogs/src/include/ddt/widgets/ddtDataStreamWidget.hpp
• datavisualisation/widgetsdialogs/src/widgets/ddtDataStreamWidget.cpp