Subgroup: Vector

Class: QgsVectorLayerFeatureCounter¶

class qgis.core.QgsVectorLayerFeatureCounter¶

Bases: qgis._core.QgsTask

Counts the features in a QgsVectorLayer in task. You should most likely not use this directly and instead call QgsVectorLayer.countSymbolFeatures() and connect to the signal QgsVectorLayer.symbolFeatureCountMapChanged()

New in version 3.0: Methods

`addSubTask`	Adds a subtask to this task.
`blockSignals`
`canCancel`	Returns true if the task can be canceled.
`cancel`	Notifies the task that it should terminate.
`childEvent`
`children`
`connectNotify`
`customEvent`
`deleteLater`
`dependentLayers`	Returns the list of layers on which the task depends.
`description`	Returns the task’s description.
`disconnect`
`disconnectNotify`
`dumpObjectInfo`
`dumpObjectTree`
`dynamicPropertyNames`
`event`
`eventFilter`
`featureCount`	Get the feature count for a particular `legendKey`.
`findChild`	findChild(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> QObject
`findChildren`	findChildren(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> List[QObject]
`finished`
`flags`	Returns the flags associated with the task.
`fromFunction`	Creates a new QgsTask task from a python function.
`hold`	Places the task on hold.
`inherits`
`installEventFilter`
`isActive`	Returns true if the task is active, ie it is not complete and has not been canceled.
`isCanceled`
`isSignalConnected`
`isWidgetType`
`isWindowType`
`killTimer`
`metaObject`
`moveToThread`
`objectName`
`parent`
`progress`	Returns the task’s progress (between 0.0 and 100.0)
`property`
`pyqtConfigure`	Each keyword argument is either the name of a Qt property or a Qt signal.
`receivers`
`removeEventFilter`
`run`
`sender`
`senderSignalIndex`
`setDependentLayers`	Sets a list of layers on which the task depends.
`setObjectName`
`setParent`
`setProgress`
`setProperty`
`signalsBlocked`
`startTimer`
`status`	Returns the current task status.
`thread`
`timerEvent`
`tr`
`unhold`	Releases the task from being held.
`waitForFinished`	Blocks the current thread until the task finishes or a maximum of `timeout` milliseconds.

Attributes

`AllFlags`
`CanCancel`
`Complete`
`OnHold`
`ParentDependsOnSubTask`
`Queued`
`Running`
`SubTaskIndependent`
`Terminated`
`begun`	Will be emitted by task to indicate its commencement.
`destroyed`	destroyed(self, QObject = None) [signal]
`objectNameChanged`	objectNameChanged(self, str) [signal]
`progressChanged`	Will be emitted by task when its progress changes.
`staticMetaObject`
`statusChanged`	Will be emitted by task when its status changes.
`symbolsCounted`	Emitted when the symbols have been counted.
`taskCompleted`	Will be emitted by task to indicate its successful completion.
`taskTerminated`	Will be emitted by task if it has terminated for any reason other then completion (e.g., when a task has been canceled or encountered an internal error).

childEvent()¶

connectNotify()¶

customEvent()¶

disconnectNotify()¶

featureCount(self, legendKey: str) → int¶: Get the feature count for a particular legendKey. If the key has not been found, -1 will be returned.

finished()¶

isCanceled()¶

isSignalConnected()¶

receivers()¶

run(self) → bool¶

sender()¶

senderSignalIndex()¶

setProgress()¶

symbolsCounted¶: Emitted when the symbols have been counted. [signal]

timerEvent()¶