QgsSymbolLayerRegistry class

Registry of available symbol layer classes.

QgsSymbolLayerRegistry is not usually directly created, but rather accessed through QgsApplication::symbolLayerRegistry().

Public static functions

static auto defaultSymbolLayer(QgsSymbol::SymbolType type) -> QgsSymbolLayer*: create a new instance of symbol layer for specified symbol type with default settings

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

auto addSymbolLayerType(QgsSymbolLayerAbstractMetadata* metadata) -> bool: register a new symbol layer type. Takes ownership of the metadata instance.
auto createSymbolLayer(const QString& name, const QgsStringMap& properties = QgsStringMap()) const -> QgsSymbolLayer*: create a new instance of symbol layer given symbol layer name and properties
auto createSymbolLayerFromSld(const QString& name, QDomElement& element) const -> QgsSymbolLayer*: create a new instance of symbol layer given symbol layer name and SLD
auto operator=(const QgsSymbolLayerRegistry& rh) -> QgsSymbolLayerRegistry& deleted: QgsSymbolLayerRegistry cannot be copied.
void resolvePaths(const QString& name, QgsStringMap& properties, const QgsPathResolver& pathResolver, bool saving) const: Resolve paths in properties of a particular symbol layer.
auto symbolLayerMetadata(const QString& name) const -> QgsSymbolLayerAbstractMetadata*: Returns metadata for specified symbol layer. Returns NULL if not found.
auto symbolLayersForType(QgsSymbol::SymbolType type) -> QStringList: Returns a list of available symbol layers for a specified symbol type.

Resolve paths in properties of a particular symbol layer.

This normally means converting relative paths to absolute paths when loading and converting absolute paths to relative paths when saving.