Contains a pipeline of raster interfaces for sequential raster processing. More...

#include <qgsrasterpipe.h>

Public Types
enum class	Property : int { RendererOpacity }
	Data definable properties. More...

Public Member Functions
	QgsRasterPipe ()=default
	Constructor for an empty QgsRasterPipe.

	QgsRasterPipe (const QgsRasterPipe &pipe)

	~QgsRasterPipe ()

QgsRasterInterface *	at (int idx) const
	Returns the interface at the specified index.

QgsBrightnessContrastFilter *	brightnessFilter () const
	Returns the brightness filter interface, or `nullptr` if no brightness filter is present in the pipe.

bool	canSetOn (int idx, bool on)
	Returns `true` if the interface at the specified index may be switched on or off.

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the pipe's property collection, used for data defined overrides.

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the pipe's property collection, used for data defined overrides.

void	evaluateDataDefinedProperties (QgsExpressionContext &context)
	Evaluates any data defined properties set on the pipe, applying their results to the corresponding interfaces in place.

QgsHueSaturationFilter *	hueSaturationFilter () const
	Returns the hue/saturation interface, or `nullptr` if no hue/saturation filter is present in the pipe.

bool	insert (int idx, QgsRasterInterface *interface)
	Attempts to insert interface at specified index and connect if connection would fail, the interface is not inserted and `false` is returned.

QgsRasterInterface *	last () const
	Returns last interface in the pipe.

void	moveToThread (QThread *thread)
	Moves the pipe to another thread.

QgsRasterNuller *	nuller () const
	Returns the raster nuller interface, or `nullptr` if no raster nuller is present in the pipe.

QgsRasterPipe &	operator= (const QgsRasterPipe &rh)=delete

QgsRasterProjector *	projector () const
	Returns the projector interface, or `nullptr` if no projector is present in the pipe.

QgsRasterDataProvider *	provider () const
	Returns the data provider interface, or `nullptr` if no data provider is present in the pipe.

bool	remove (int idx)
	Removes and deletes the interface at given index (if possible).

bool	remove (QgsRasterInterface *interface)
	Removes and deletes interface from pipe (if possible).

QgsRasterRenderer *	renderer () const
	Returns the raster renderer interface, or `nullptr` if no raster renderer is present in the pipe.

bool	replace (int idx, QgsRasterInterface *interface)
	Attempts to replace the interface at specified index and reconnect the pipe.

QgsRasterResampleFilter *	resampleFilter () const
	Returns the resample filter interface, or `nullptr` if no resample filter is present in the pipe.

Qgis::RasterResamplingStage	resamplingStage () const
	Returns which stage of the pipe should apply resampling.

bool	set (QgsRasterInterface *interface)
	Inserts a new known interface in default place or replace interface of the same role if it already exists.

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the pipe's property collection, used for data defined overrides.

bool	setOn (int idx, bool on)
	Set whether the interface at the specified index is enabled.

void	setResamplingStage (Qgis::RasterResamplingStage stage)
	Sets which stage of the pipe should apply resampling.

int	size () const
	Returns the size of the pipe (the number of interfaces contained in the pipe).

Static Public Member Functions
static QgsPropertiesDefinition	propertyDefinitions ()
	Returns the definitions for data defined properties available for use in raster pipes.

Detailed Description

Contains a pipeline of raster interfaces for sequential raster processing.

Definition at line 49 of file qgsrasterpipe.h.

Member Enumeration Documentation

◆ Property

enum class QgsRasterPipe::Property : int

strong

Data definable properties.

Since: QGIS 3.22

Enumerator
RendererOpacity	Raster renderer global opacity.

Definition at line 59 of file qgsrasterpipe.h.

Constructor & Destructor Documentation

◆ QgsRasterPipe() [1/2]

QgsRasterPipe::QgsRasterPipe ( )

default

Constructor for an empty QgsRasterPipe.

◆ QgsRasterPipe() [2/2]

QgsRasterPipe::QgsRasterPipe ( const QgsRasterPipe & pipe )

Definition at line 34 of file qgsrasterpipe.cpp.

◆ ~QgsRasterPipe()

QgsRasterPipe::~QgsRasterPipe ( )

Definition at line 57 of file qgsrasterpipe.cpp.

Member Function Documentation

◆ at()

QgsRasterInterface * QgsRasterPipe::at ( int idx ) const

inline

Returns the interface at the specified index.

Definition at line 167 of file qgsrasterpipe.h.

◆ brightnessFilter()

QgsBrightnessContrastFilter * QgsRasterPipe::brightnessFilter ( ) const

Returns the brightness filter interface, or nullptr if no brightness filter is present in the pipe.

Definition at line 292 of file qgsrasterpipe.cpp.

◆ canSetOn()

bool QgsRasterPipe::canSetOn	(	int	idx,
		bool	on
	)

Returns true if the interface at the specified index may be switched on or off.

Definition at line 351 of file qgsrasterpipe.cpp.

◆ dataDefinedProperties() [1/2]

QgsPropertyCollection & QgsRasterPipe::dataDefinedProperties ( )

inline

Returns a reference to the pipe's property collection, used for data defined overrides.

See also: setDataDefinedProperties()

Since: QGIS 3.22

Definition at line 247 of file qgsrasterpipe.h.

◆ dataDefinedProperties() [2/2]

const QgsPropertyCollection & QgsRasterPipe::dataDefinedProperties ( ) const

inline

Returns a reference to the pipe's property collection, used for data defined overrides.

See also: setDataDefinedProperties(); Property

Note: not available in Python bindings

Since: QGIS 3.22

Definition at line 256 of file qgsrasterpipe.h.

◆ evaluateDataDefinedProperties()

void QgsRasterPipe::evaluateDataDefinedProperties ( QgsExpressionContext & context )

Evaluates any data defined properties set on the pipe, applying their results to the corresponding interfaces in place.

Since: QGIS 3.22

Definition at line 421 of file qgsrasterpipe.cpp.

◆ hueSaturationFilter()

QgsHueSaturationFilter * QgsRasterPipe::hueSaturationFilter ( ) const

Returns the hue/saturation interface, or nullptr if no hue/saturation filter is present in the pipe.

Definition at line 297 of file qgsrasterpipe.cpp.

◆ insert()

bool QgsRasterPipe::insert	(	int	idx,
		QgsRasterInterface *	interface
	)

Attempts to insert interface at specified index and connect if connection would fail, the interface is not inserted and false is returned.

See also: set(); replace()

Definition at line 97 of file qgsrasterpipe.cpp.

◆ last()

QgsRasterInterface * QgsRasterPipe::last ( ) const

inline

Returns last interface in the pipe.

Definition at line 172 of file qgsrasterpipe.h.

◆ moveToThread()

void QgsRasterPipe::moveToThread ( QThread * thread )

Moves the pipe to another thread.

This effects all QObject derived interfaces in the pipe, and follows the same behavior as QObject::moveToThread. Specifically, it is permitted to PUSH the pipe from the current thread to another thread, but NOT to PULL a pipe from another thread over to the current thread. Pulling is only supported by first pushsing the pipe from its current thread to a nullptr thread, and then later pulling to the current thread. See QObject documentation for more details.

Since: QGIS 3.30

Definition at line 66 of file qgsrasterpipe.cpp.

◆ nuller()

QgsRasterNuller * QgsRasterPipe::nuller ( ) const

Returns the raster nuller interface, or nullptr if no raster nuller is present in the pipe.

Definition at line 307 of file qgsrasterpipe.cpp.

◆ operator=()

QgsRasterPipe & QgsRasterPipe::operator= ( const QgsRasterPipe & rh )

delete

◆ projector()

QgsRasterProjector * QgsRasterPipe::projector ( ) const

Returns the projector interface, or nullptr if no projector is present in the pipe.

Definition at line 302 of file qgsrasterpipe.cpp.

◆ propertyDefinitions()

QgsPropertiesDefinition QgsRasterPipe::propertyDefinitions ( )

static

Returns the definitions for data defined properties available for use in raster pipes.

Since: QGIS 3.22

Definition at line 454 of file qgsrasterpipe.cpp.

◆ provider()

QgsRasterDataProvider * QgsRasterPipe::provider ( ) const

Returns the data provider interface, or nullptr if no data provider is present in the pipe.

Definition at line 277 of file qgsrasterpipe.cpp.

◆ remove() [1/2]

bool QgsRasterPipe::remove ( int idx )

Removes and deletes the interface at given index (if possible).

Returns true if the interface was successfully removed.

Definition at line 312 of file qgsrasterpipe.cpp.

◆ remove() [2/2]

bool QgsRasterPipe::remove ( QgsRasterInterface * interface )

Removes and deletes interface from pipe (if possible).

Returns true if the interface was successfully removed.

Definition at line 344 of file qgsrasterpipe.cpp.

◆ renderer()

QgsRasterRenderer * QgsRasterPipe::renderer ( ) const

Returns the raster renderer interface, or nullptr if no raster renderer is present in the pipe.

Definition at line 282 of file qgsrasterpipe.cpp.

◆ replace()

bool QgsRasterPipe::replace	(	int	idx,
		QgsRasterInterface *	interface
	)

Attempts to replace the interface at specified index and reconnect the pipe.

If the connection would fail, the interface is not inserted and false is returned.

See also: insert(); set()

Definition at line 127 of file qgsrasterpipe.cpp.

◆ resampleFilter()

QgsRasterResampleFilter * QgsRasterPipe::resampleFilter ( ) const

Returns the resample filter interface, or nullptr if no resample filter is present in the pipe.

Definition at line 287 of file qgsrasterpipe.cpp.

◆ resamplingStage()

Qgis::RasterResamplingStage QgsRasterPipe::resamplingStage ( ) const

inline

Returns which stage of the pipe should apply resampling.

See also: setResamplingStage()

Since: QGIS 3.16

Definition at line 240 of file qgsrasterpipe.h.

◆ set()

bool QgsRasterPipe::set ( QgsRasterInterface * interface )

Inserts a new known interface in default place or replace interface of the same role if it already exists.

Known interfaces are:

(and their subclasses).

For other interfaces the position of the interface in the pipe must be explicitly specified using the insert() method.

See also: insert(); replace()

Definition at line 205 of file qgsrasterpipe.cpp.

◆ setDataDefinedProperties()

void QgsRasterPipe::setDataDefinedProperties ( const QgsPropertyCollection & collection )

inline

Sets the pipe's property collection, used for data defined overrides.

Any existing properties will be discarded.

See also: dataDefinedProperties(); Property

Since: QGIS 3.22

Definition at line 267 of file qgsrasterpipe.h.

◆ setOn()

bool QgsRasterPipe::setOn	(	int	idx,
		bool	on
	)

Set whether the interface at the specified index is enabled.

Returns true on success.

Definition at line 373 of file qgsrasterpipe.cpp.

◆ setResamplingStage()

void QgsRasterPipe::setResamplingStage ( Qgis::RasterResamplingStage stage )

Sets which stage of the pipe should apply resampling.

Provider resampling is only supported if provider sets ProviderHintCanPerformProviderResampling in providerCapabilities().

See also: resamplingStage()

Since: QGIS 3.16

Definition at line 400 of file qgsrasterpipe.cpp.

◆ size()

int QgsRasterPipe::size ( ) const

inline

Returns the size of the pipe (the number of interfaces contained in the pipe).

Definition at line 162 of file qgsrasterpipe.h.

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

/build/qgis-3.40.0+99sid/src/core/raster/qgsrasterpipe.h
/build/qgis-3.40.0+99sid/src/core/raster/qgsrasterpipe.cpp

Public Types

Public Member Functions

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ Property

Constructor & Destructor Documentation

◆ QgsRasterPipe() [1/2]

◆ QgsRasterPipe() [2/2]

◆ ~QgsRasterPipe()

Member Function Documentation

◆ at()

◆ brightnessFilter()

◆ canSetOn()

◆ dataDefinedProperties() [1/2]

◆ dataDefinedProperties() [2/2]

◆ evaluateDataDefinedProperties()

◆ hueSaturationFilter()

◆ insert()

◆ last()

◆ moveToThread()

◆ nuller()

◆ operator=()

◆ projector()

◆ propertyDefinitions()

◆ provider()

◆ remove() [1/2]

◆ remove() [2/2]

◆ renderer()

◆ replace()

◆ resampleFilter()

◆ resamplingStage()

◆ set()

◆ setDataDefinedProperties()

◆ setOn()

◆ setResamplingStage()

◆ size()