QIfMediaIndexerControlBackendInterface Class

The QIfMediaIndexerControlBackendInterface defines the interface for backends to the QIfMediaIndexerControl feature class. More...

Header: #include <QIfMediaIndexerControlBackendInterface>
qmake: QT += ifmedia
Inherits: QIfFeatureInterface

Public Functions

QIfMediaIndexerControlBackendInterface(QObject *parent = nullptr)
virtual void pause() = 0
virtual void resume() = 0


void progressChanged(qreal progress)
void stateChanged(QIfMediaIndexerControl::State state)

Detailed Description

The QIfMediaIndexerControlBackendInterface is the interface used by QIfMediaIndexerControl

The interface is discovered by a QIfMediaIndexerControl object, which connects to it and sets it up.

<example of a fully featured backend>

Member Function Documentation

[explicit] QIfMediaIndexerControlBackendInterface::QIfMediaIndexerControlBackendInterface(QObject *parent = nullptr)

Constructs a backend interface.

The parent is sent to the QObject constructor.

[pure virtual] void QIfMediaIndexerControlBackendInterface::pause()

Pauses the currently ongoing indexing. If currently no indexing is ongoing this call should not perform any actions.

See also resume().

[signal] void QIfMediaIndexerControlBackendInterface::progressChanged(qreal progress)

This signal is emitted when indexing is currently ongoing and the progress of the operation changed. The progress argument passes the current progress between 0 and 1.

[pure virtual] void QIfMediaIndexerControlBackendInterface::resume()

Resumes the previously paused indexing. If there is nothing to resume this call should not perform any actions.

See also pause().

[signal] void QIfMediaIndexerControlBackendInterface::stateChanged(QIfMediaIndexerControl::State state)

This signal is emitted whenever the indexing state changed. The state argument holds the new state of the indexer.

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