Class DdsIdVec4dPublisher

Inheritance Relationships

Base Type

  • public QObject

Class Documentation

class DdsIdVec4dPublisher : public QObject

Publisher for DDS type IdVec4d as a QML element.

This class is a QML element and enables QML applications to publish a DDS signal type from a writable QML property.

Public Functions

explicit DdsIdVec4dPublisher(QObject *parent = nullptr)


The initialization is deferred to an init() function.


parent[in] QObject pointer.

virtual ~DdsIdVec4dPublisher()


QVector4D value() const

Property accessor for vector value as QML property.


QML compatible vector.

void init(QtToDds *dds, const QString &topic, const QString &id, QVector4D start_value, bool send_first)

Initializes DDS writer and sets initial value.

  • dds[in] Pointer to QtToDds instance.

  • topic[in] Name of DDS topic to publish.

  • id[in] Key identifier for the topic instance.

  • start_value[in] Initial value of the signal.

  • send_first[in] Whether to forcefully send the initial value.

Public Slots

void setValue(QVector4D value)

Write function for the QML property, publishes value on DDS.

This slot publishes the vector onto the DDS topic with the configured key identifier. It also emits a valueChanged().


It only publishes or emits a signal if the QML property value has changed!


value[in] New vector value.

void publish()

Publish on DDS the value already set.


void valueChanged(QVector4D value)

DDS value has has changed.

This signal is connected to the QML DdsIdVec4dPublisher::value property.


value[out] New vector value.


QVector4D value

DDS 4d-vector as QVector4D QML property.

Private Members

std::unique_ptr<sinspekto::Writer<fkin::IdVec4d>> m_writer

The DDS writer wrapper class.