QgsRendererRegistry Class Reference

Registry of renderers. More...

#include <qgsrendererregistry.h>

Public Member Functions
	QgsRendererRegistry ()
	QgsRendererRegistry (const QgsRendererRegistry &rh)=delete
	QgsRendererRegistry cannot be copied. More...
	~QgsRendererRegistry ()
bool	addRenderer (QgsRendererAbstractMetadata *metadata)
	Adds a renderer to the registry. More...
QgsRendererRegistry &	operator= (const QgsRendererRegistry &rh)=delete
	QgsRendererRegistry cannot be copied. More...
bool	removeRenderer (const QString &rendererName)
	Removes a renderer from registry. More...
QgsRendererAbstractMetadata *	rendererMetadata (const QString &rendererName)
	Returns the metadata for a specified renderer. More...
QStringList	renderersList (const QgsVectorLayer *layer) const
	Returns a list of available renderers which are compatible with a specified layer. More...
QStringList	renderersList (QgsRendererAbstractMetadata::LayerTypes layerTypes=QgsRendererAbstractMetadata::All) const
	Returns a list of available renderers. More...

Detailed Description

Registry of renderers.

QgsRendererRegistry is not usually directly created, but rather accessed through QgsApplication::rendererRegistry().

Definition at line 224 of file qgsrendererregistry.h.

Constructor & Destructor Documentation

QgsRendererRegistry() [1/2]

QgsRendererRegistry::QgsRendererRegistry

(

)

Definition at line 33 of file qgsrendererregistry.cpp.

~QgsRendererRegistry()

QgsRendererRegistry::~QgsRendererRegistry

(

)

Definition at line 106 of file qgsrendererregistry.cpp.

QgsRendererRegistry() [2/2]

QgsRendererRegistry::QgsRendererRegistry ( const QgsRendererRegistry &  rh )

delete

QgsRendererRegistry cannot be copied.

Member Function Documentation

addRenderer()

bool QgsRendererRegistry::addRenderer

(

QgsRendererAbstractMetadata *

metadata

)

Adds a renderer to the registry.

Takes ownership of the metadata object.

Parameters

metadata

renderer metadata

Returns

true if renderer was added successfully, or false if renderer could not be added (e.g., a renderer with a duplicate name already exists)

Definition at line 111 of file qgsrendererregistry.cpp.

operator=()

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

delete

QgsRendererRegistry cannot be copied.

removeRenderer()

bool QgsRendererRegistry::removeRenderer

(

const QString &

rendererName

)

Removes a renderer from registry.

Parameters

rendererName

name of renderer to remove from registry

Returns

true if renderer was successfully removed, or false if matching renderer could not be found

Definition at line 121 of file qgsrendererregistry.cpp.

rendererMetadata()

QgsRendererAbstractMetadata * QgsRendererRegistry::rendererMetadata

(

const QString &

rendererName

)

Returns the metadata for a specified renderer.

Returns nullptr if a matching renderer was not found in the registry.

Definition at line 132 of file qgsrendererregistry.cpp.

renderersList() [1/2]

QStringList QgsRendererRegistry::renderersList

(

const QgsVectorLayer *

layer

)

const

Returns a list of available renderers which are compatible with a specified layer.

Parameters

layer

vector layer

Since

QGIS 2.16

Definition at line 150 of file qgsrendererregistry.cpp.

renderersList() [2/2]

QStringList QgsRendererRegistry::renderersList

(

QgsRendererAbstractMetadata::LayerTypes

layerTypes = QgsRendererAbstractMetadata::All

)

const

Returns a list of available renderers.

Parameters

layerTypes

flags to filter the renderers by compatible layer types

Definition at line 137 of file qgsrendererregistry.cpp.

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

• /build/qgis-3.20.0+99unstable/src/core/symbology/qgsrendererregistry.h
• /build/qgis-3.20.0+99unstable/src/core/symbology/qgsrendererregistry.cpp