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/************************************************************************
* This file has been generated automatically from *
* *
* src/core/vector/qgsvectorlayerfeaturecounter.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.py again *
************************************************************************/
class QgsVectorLayerFeatureCounter : QgsTask
{
%Docstring(signature="appended")
Counts the features in a :py:class:`QgsVectorLayer` in task.
You should most likely not use this directly and instead call
:py:func:`QgsVectorLayer.countSymbolFeatures()` and connect to the
signal :py:func:`QgsVectorLayer.symbolFeatureCountMapChanged()`.
%End
%TypeHeaderCode
#include "qgsvectorlayerfeaturecounter.h"
%End
public:
QgsVectorLayerFeatureCounter( QgsVectorLayer *layer, const QgsExpressionContext &context = QgsExpressionContext(), bool storeSymbolFids = false );
%Docstring
Create a new feature counter for ``layer``.
:param layer: Target :py:class:`QgsVectorLayer` to perform counting on.
:param context: Specific :py:class:`QgsExpressionContext` to use during
the rendering step.
:param storeSymbolFids: If ``True`` will store the feature ids (fids),
otherwise will only count the number of features
per symbol. Default ``False``.
%End
~QgsVectorLayerFeatureCounter();
virtual bool run();
%Docstring
Calculates the feature count and Ids per symbol
%End
virtual void cancel();
long long featureCount( const QString &legendKey ) const;
%Docstring
Returns the feature count for a particular ``legendKey``. If the key has
not been found, -1 will be returned.
%End
QgsFeatureIds featureIds( const QString &symbolkey ) const;
%Docstring
Returns the feature Ids for a particular ``legendKey``. If the key has
not been found an empty QSet will be returned.
.. versionadded:: 3.10
%End
signals:
void symbolsCounted();
%Docstring
Emitted when the symbols have been counted.
%End
};
/************************************************************************
* This file has been generated automatically from *
* *
* src/core/vector/qgsvectorlayerfeaturecounter.h *
* *
* Do not edit manually ! Edit header and run scripts/sipify.py again *
************************************************************************/
|
