QgsRendererRegistry class

Registry of renderers.

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

Constructors, destructors, conversion operators

QgsRendererRegistry(const QgsRendererRegistry& rh) deleted: QgsRendererRegistry cannot be copied.

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

Adds a renderer to the registry.

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)

Takes ownership of the metadata object.

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

Returns the metadata for a specified renderer.

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

Returns a list of available renderers.

Parameters
layerTypes	flags to filter the renderers by compatible layer types

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

Parameters
layer	vector layer