Abstract interface for use by classes that filter the features of a layer. More...
#include <qgsfeaturefilterprovider.h>
Public Member Functions | |
| QgsFeatureFilterProvider ()=default | |
| Constructor. More... | |
| virtual | ~QgsFeatureFilterProvider ()=default |
| virtual QgsFeatureFilterProvider * | clone () const =0 |
| Create a clone of the feature filter provider. More... | |
| virtual void | filterFeatures (const QgsVectorLayer *layer, QgsFeatureRequest &featureRequest) const =0 |
| Add additional filters to the feature request to further restrict the features returned by the request. More... | |
Detailed Description
Abstract interface for use by classes that filter the features of a layer.
A QgsFeatureFilterProvider provides a method for modifying a QgsFeatureRequest in place to apply additional filters to the request.
- Since
- QGIS 2.14
Definition at line 40 of file qgsfeaturefilterprovider.h.
Constructor & Destructor Documentation
◆ QgsFeatureFilterProvider()
|
default |
Constructor.
◆ ~QgsFeatureFilterProvider()
|
virtualdefault |
Member Function Documentation
◆ clone()
|
pure virtual |
Create a clone of the feature filter provider.
- Returns
- a new clone
Implemented in QgsAccessControl, QgsFeatureFilter, and QgsFeatureFilterProviderGroup.
◆ filterFeatures()
|
pure virtual |
Add additional filters to the feature request to further restrict the features returned by the request.
Derived classes must implement this method.
- Parameters
-
layer the layer to filter featureRequest the feature request to update
Implemented in QgsAccessControl, QgsFeatureFilter, and QgsFeatureFilterProviderGroup.
The documentation for this class was generated from the following file:
- /tmp/buildd/qgis-3.6.0+99unstable/src/core/qgsfeaturefilterprovider.h
