Base class for providing feedback from a processing algorithm. More...

#include <qgsprocessingfeedback.h>

Inheritance diagram for QgsProcessingFeedback:

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Public Member Functions
	QgsProcessingFeedback (bool logFeedback=true)
	Constructor for QgsProcessingFeedback.

virtual QString	htmlLog () const
	Returns the HTML formatted contents of the log, which contains all messages pushed to the feedback object.

virtual void	pushCommandInfo (const QString &info)
	Pushes an informational message containing a command from the algorithm.

virtual void	pushConsoleInfo (const QString &info)
	Pushes a console feedback message from the algorithm.

virtual void	pushDebugInfo (const QString &info)
	Pushes an informational message containing debugging helpers from the algorithm.

virtual void	pushFormattedMessage (const QString &html, const QString &text)
	Pushes a pre-formatted message from the algorithm.

void	pushFormattedResults (const QgsProcessingAlgorithm *algorithm, QgsProcessingContext &context, const QVariantMap &results)
	Pushes a summary of the execution results to the log.

virtual void	pushInfo (const QString &info)
	Pushes a general informational message from the algorithm.

void	pushVersionInfo (const QgsProcessingProvider *provider=nullptr)
	Pushes a summary of the QGIS (and underlying library) version information to the log.

virtual void	pushWarning (const QString &warning)
	Pushes a warning informational message from the algorithm.

virtual void	reportError (const QString &error, bool fatalError=false)
	Reports that the algorithm encountered an error while executing.

virtual void	setProgressText (const QString &text)
	Sets a progress report text string.

virtual QString	textLog () const
	Returns the plain text contents of the log, which contains all messages pushed to the feedback object.

Public Member Functions inherited from QgsFeedback
	QgsFeedback (QObject *parent=nullptr)
	Construct a feedback object.

bool	isCanceled () const
	Tells whether the operation has been canceled already.

unsigned long long	processedCount () const
	Returns the current processed objects count reported by the feedback object.

double	progress () const
	Returns the current progress reported by the feedback object.

void	setProcessedCount (unsigned long long processedCount)
	Sets the current processed objects count for the feedback object.

void	setProgress (double progress)
	Sets the current progress for the feedback object.

Additional Inherited Members
Public Slots inherited from QgsFeedback
void	cancel ()
	Tells the internal routines that the current operation should be canceled. This should be run by the main thread.

Signals inherited from QgsFeedback
void	canceled ()
	Internal routines can connect to this signal if they use event loop.

void	processedCountChanged (unsigned long long processedCount)
	Emitted when the feedback object reports a change in the number of processed objects.

void	progressChanged (double progress)
	Emitted when the feedback object reports a progress change.

Detailed Description

Base class for providing feedback from a processing algorithm.

This base class implementation silently ignores all feedback reported by algorithms. Subclasses of QgsProcessingFeedback can be used to log this feedback or report it to users via the GUI.

Definition at line 37 of file qgsprocessingfeedback.h.

Constructor & Destructor Documentation

◆ QgsProcessingFeedback()

QgsProcessingFeedback::QgsProcessingFeedback ( bool logFeedback = true )

Constructor for QgsProcessingFeedback.

If logFeedback is true, then all feedback received will be directed to QgsMessageLog.

Definition at line 30 of file qgsprocessingfeedback.cpp.

Member Function Documentation

◆ htmlLog()

QString QgsProcessingFeedback::htmlLog ( ) const

virtual

Returns the HTML formatted contents of the log, which contains all messages pushed to the feedback object.

See also: textLog()

Since: QGIS 3.14

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 182 of file qgsprocessingfeedback.cpp.

◆ pushCommandInfo()

void QgsProcessingFeedback::pushCommandInfo ( const QString & info )

virtual

Pushes an informational message containing a command from the algorithm.

This is usually used to report commands which are executed in an external application or as subprocesses.

See also: pushWarning(); pushInfo(); pushDebugInfo(); pushConsoleInfo()

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 98 of file qgsprocessingfeedback.cpp.

◆ pushConsoleInfo()

void QgsProcessingFeedback::pushConsoleInfo ( const QString & info )

virtual

Pushes a console feedback message from the algorithm.

This is used to report the output from executing an external command or subprocess.

See also: pushWarning(); pushInfo(); pushDebugInfo(); pushCommandInfo()

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 116 of file qgsprocessingfeedback.cpp.

◆ pushDebugInfo()

void QgsProcessingFeedback::pushDebugInfo ( const QString & info )

virtual

Pushes an informational message containing debugging helpers from the algorithm.

See also: pushWarning(); pushInfo(); pushCommandInfo(); pushConsoleInfo()

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 107 of file qgsprocessingfeedback.cpp.

◆ pushFormattedMessage()

void QgsProcessingFeedback::pushFormattedMessage	(	const QString &	html,
		const QString &	text
	)

virtual

Pushes a pre-formatted message from the algorithm.

This can be used to push formatted HTML messages to the feedback object. A plain text version of the message must also be specified.

See also: pushInfo(); pushWarning(); pushCommandInfo(); pushDebugInfo(); pushConsoleInfo()

Since: QGIS 3.36

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 89 of file qgsprocessingfeedback.cpp.

◆ pushFormattedResults()

void QgsProcessingFeedback::pushFormattedResults	(	const QgsProcessingAlgorithm *	algorithm,
		QgsProcessingContext &	context,
		const QVariantMap &	results
	)

Pushes a summary of the execution results to the log.

Since: QGIS 3.36

Definition at line 154 of file qgsprocessingfeedback.cpp.

◆ pushInfo()

void QgsProcessingFeedback::pushInfo ( const QString & info )

virtual

Pushes a general informational message from the algorithm.

This can be used to report feedback which is neither a status report or an error, such as "Found 47 matching features".

See also: pushFormattedMessage(); pushWarning(); pushCommandInfo(); pushDebugInfo(); pushConsoleInfo()

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 80 of file qgsprocessingfeedback.cpp.

◆ pushVersionInfo()

void QgsProcessingFeedback::pushVersionInfo ( const QgsProcessingProvider * provider = nullptr )

Pushes a summary of the QGIS (and underlying library) version information to the log.

Since: QGIS 3.4.7

Definition at line 125 of file qgsprocessingfeedback.cpp.

◆ pushWarning()

void QgsProcessingFeedback::pushWarning ( const QString & warning )

virtual

Pushes a warning informational message from the algorithm.

This should only be used sparsely as to maintain the importance of visual queues associated to this type of message.

See also: pushInfo(); pushCommandInfo(); pushDebugInfo(); pushConsoleInfo()

Since: QGIS 3.16.2

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 71 of file qgsprocessingfeedback.cpp.

◆ reportError()

void QgsProcessingFeedback::reportError	(	const QString &	error,
		bool	fatalError = `false`
	)

virtual

Reports that the algorithm encountered an error while executing.

If fatalError is true then the error prevented the algorithm from executing.

Reimplemented in QgsProcessingBatchFeedback, and QgsProcessingMultiStepFeedback.

Definition at line 62 of file qgsprocessingfeedback.cpp.

◆ setProgressText()

void QgsProcessingFeedback::setProgressText ( const QString & text )

virtual

Sets a progress report text string.

This can be used in conjunction with setProgress() to provide detailed progress reports, such as "Transformed 4 of 5 layers".

See also: setProgress()

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 36 of file qgsprocessingfeedback.cpp.

◆ textLog()

QString QgsProcessingFeedback::textLog ( ) const

virtual

Returns the plain text contents of the log, which contains all messages pushed to the feedback object.

See also: htmlLog()

Since: QGIS 3.14

Reimplemented in QgsProcessingMultiStepFeedback.

Definition at line 187 of file qgsprocessingfeedback.cpp.

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

/home/fischer/src/qgis-3.38/src/core/processing/qgsprocessingfeedback.h
/home/fischer/src/qgis-3.38/src/core/processing/qgsprocessingfeedback.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsProcessingFeedback()

Member Function Documentation

◆ htmlLog()

◆ pushCommandInfo()

◆ pushConsoleInfo()

◆ pushDebugInfo()

◆ pushFormattedMessage()

◆ pushFormattedResults()

◆ pushInfo()

◆ pushVersionInfo()

◆ pushWarning()

◆ reportError()

◆ setProgressText()

◆ textLog()