Class: QgsMapLayerLegend¶

class qgis.core.QgsMapLayerLegend¶

Bases: PyQt5.QtCore.QObject

The QgsMapLayerLegend class is abstract interface for implementations of legends for one map layer.

New in version 2.6.

QgsMapLayerLegend(parent: QObject = None) Constructor for QgsMapLayerLegend

Methods

childEvent

connectNotify

createLayerTreeModelLegendNodes

Returns list of legend nodes to be used for a particular layer tree layer node.

customEvent

defaultMeshLegend

Create new legend implementation for mesh layer

defaultPointCloudLegend

Create new legend implementation for a point cloud layer.

defaultRasterLegend

Create new legend implementation for raster layer

defaultVectorLegend

Create new legend implementation for vector layer

disconnectNotify

isSignalConnected

readXml

Reads configuration from a DOM element previously written by writeXml()

receivers

sender

senderSignalIndex

timerEvent

writeXml

Writes configuration to a DOM element, to be used later with readXml()

Signals

itemsChanged

pyqtSignal(*types, name: str = ..., revision: int = ..., arguments: Sequence = ...) -> PYQT_SIGNAL

childEvent(self, QChildEvent)¶

connectNotify(self, QMetaMethod)¶

createLayerTreeModelLegendNodes(self, nodeLayer: QgsLayerTreeLayer) → List[QgsLayerTreeModelLegendNode]¶

Returns list of legend nodes to be used for a particular layer tree layer node. Ownership is transferred to the caller.

Parameters: nodeLayer (QgsLayerTreeLayer) –
Return type: List[QgsLayerTreeModelLegendNode]

customEvent(self, QEvent)¶

defaultMeshLegend(ml: QgsMeshLayer) → QgsMapLayerLegend¶

Create new legend implementation for mesh layer

Parameters: ml (QgsMeshLayer) –
Return type: QgsMapLayerLegend

defaultPointCloudLegend(layer: QgsPointCloudLayer) → QgsMapLayerLegend¶

Create new legend implementation for a point cloud layer.

New in version 3.18.

Parameters: layer (QgsPointCloudLayer) –
Return type: QgsMapLayerLegend

defaultRasterLegend(rl: QgsRasterLayer) → QgsMapLayerLegend¶

Create new legend implementation for raster layer

Parameters: rl (QgsRasterLayer) –
Return type: QgsMapLayerLegend

defaultVectorLegend(vl: QgsVectorLayer) → QgsMapLayerLegend¶

Create new legend implementation for vector layer

Parameters: vl (QgsVectorLayer) –
Return type: QgsMapLayerLegend

disconnectNotify(self, QMetaMethod)¶

isSignalConnected(self, QMetaMethod) → bool¶

itemsChanged¶

pyqtSignal(*types, name: str = …, revision: int = …, arguments: Sequence = …) -> PYQT_SIGNAL

types is normally a sequence of individual types. Each type is either a type object or a string that is the name of a C++ type. Alternatively each type could itself be a sequence of types each describing a different overloaded signal. name is the optional C++ name of the signal. If it is not specified then the name of the class attribute that is bound to the signal is used. revision is the optional revision of the signal that is exported to QML. If it is not specified then 0 is used. arguments is the optional sequence of the names of the signal’s arguments.

Parameters

name (str = ...) –
revision (int = ...) –
arguments (Sequence = ...) –

Return type

PYQT_SIGNAL

readXml(self, elem: QDomElement, context: QgsReadWriteContext)¶

Reads configuration from a DOM element previously written by writeXml()

New in version 3.2.

Parameters

elem (QDomElement) –
context (QgsReadWriteContext) –

receivers(self, PYQT_SIGNAL) → int¶

sender(self) → QObject¶

senderSignalIndex(self) → int¶

timerEvent(self, QTimerEvent)¶

writeXml(self, doc: QDomDocument, context: QgsReadWriteContext) → QDomElement¶

Writes configuration to a DOM element, to be used later with readXml()

New in version 3.2.

Parameters

doc (QDomDocument) –
context (QgsReadWriteContext) –

Return type

QDomElement