QGIS API Documentation  3.26.3-Buenos Aires (65e4edfdad)
qgsalgorithmpointsinpolygon.h
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1 /***************************************************************************
2  qgsalgorithmpointsinpolygon.h
3  ---------------------
4  begin : November 2019
5  copyright : (C) 2019 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSALGORITHMPOINTSINPOLYGON_H
19 #define QGSALGORITHMPOINTSINPOLYGON_H
20 
21 #define SIP_NO_FILE
22 
23 #include "qgis.h"
24 #include "qgsprocessingalgorithm.h"
25 
27 
31 class QgsPointsInPolygonAlgorithm : public QgsProcessingFeatureBasedAlgorithm
32 {
33 
34  public:
35 
36  QgsPointsInPolygonAlgorithm() = default;
37  void initParameters( const QVariantMap &configuration = QVariantMap() ) override;
38  QString name() const override;
39  QString displayName() const override;
40  QStringList tags() const override;
41  QString svgIconPath() const override;
42  QIcon icon() const override;
43  QString group() const override;
44  QString groupId() const override;
45  QString shortHelpString() const override;
46  QString shortDescription() const override;
47  QgsPointsInPolygonAlgorithm *createInstance() const override SIP_FACTORY;
48  QList<int> inputLayerTypes() const override;
51 
52 
53  protected:
54  QString inputParameterName() const override;
55  QString inputParameterDescription() const override;
56  QString outputName() const override;
57  bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
58  QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
59  QgsFields outputFields( const QgsFields &inputFields ) const override;
60  bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
61 
62  private:
63  bool mIsInPlace = false;
64  QString mFieldName;
65  QString mWeightFieldName;
66  QString mClassFieldName;
67  int mWeightFieldIndex = -1;
68  int mClassFieldIndex = -1;
69  mutable int mDestFieldIndex = -1;
70  mutable QgsFields mFields;
71  mutable QgsCoordinateReferenceSystem mCrs;
72  QgsAttributeList mPointAttributes;
73  std::unique_ptr< QgsProcessingFeatureSource > mPointSource;
74 
75 };
76 
78 
79 #endif // QGSALGORITHMPOINTSINPOLYGON_H
80 
81 
QgsProcessingAlgorithm::shortDescription
virtual QString shortDescription() const
Returns an optional translated short description of the algorithm.
Definition: qgsprocessingalgorithm.cpp:60
QgsProcessingAlgorithm::displayName
virtual QString displayName() const =0
Returns the translated algorithm name, which should be used for any user-visible display of the algor...
QgsProcessingFeedback
Base class for providing feedback from a processing algorithm.
Definition: qgsprocessingfeedback.h:37
QgsFields
Container of fields for a vector layer.
Definition: qgsfields.h:44
QgsProcessingFeatureBasedAlgorithm::inputParameterDescription
virtual QString inputParameterDescription() const
Returns the translated description of the parameter corresponding to the input layer.
Definition: qgsprocessingalgorithm.cpp:1030
QgsProcessingFeatureBasedAlgorithm::initParameters
virtual void initParameters(const QVariantMap &configuration=QVariantMap())
Initializes any extra parameters added by the algorithm subclass.
Definition: qgsprocessingalgorithm.cpp:1070
qgis.h
QgsProcessingAlgorithm::groupId
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:234
QgsProcessingAlgorithm::createInstance
virtual QgsProcessingAlgorithm * createInstance() const =0
Creates a new instance of the algorithm class.
QgsProcessingAlgorithm::svgIconPath
virtual QString svgIconPath() const
Returns a path to an SVG version of the algorithm's icon.
Definition: qgsprocessingalgorithm.cpp:85
QgsProcessingFeatureBasedAlgorithm::supportInPlaceEdit
bool supportInPlaceEdit(const QgsMapLayer *layer) const override
Checks whether this algorithm supports in-place editing on the given layer Default implementation for...
Definition: qgsprocessingalgorithm.cpp:1139
QgsProcessingAlgorithm::prepareAlgorithm
virtual bool prepareAlgorithm(const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback) SIP_THROW(QgsProcessingException)
Prepares the algorithm to run using the specified parameters.
Definition: qgsprocessingalgorithm.cpp:451
QgsAttributeList
QList< int > QgsAttributeList
Definition: qgsfield.h:26
QgsProcessingFeatureBasedAlgorithm
An abstract QgsProcessingAlgorithm base class for processing algorithms which operate "feature-by-fea...
Definition: qgsprocessingalgorithm.h:1143
SIP_FACTORY
#define SIP_FACTORY
Definition: qgis_sip.h:76
QgsProcessingAlgorithm::name
virtual QString name() const =0
Returns the algorithm name, used for identifying the algorithm.
QgsProcessingFeatureBasedAlgorithm::processFeature
virtual QgsFeatureList processFeature(const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback) SIP_THROW(QgsProcessingException)=0
Processes an individual input feature from the source.
QgsProcessingContext
Contains information about the context in which a processing algorithm is executed.
Definition: qgsprocessingcontext.h:46
qgsprocessingalgorithm.h
QgsProcessingFeatureBasedAlgorithm::outputCrs
virtual QgsCoordinateReferenceSystem outputCrs(const QgsCoordinateReferenceSystem &inputCrs) const
Maps the input source coordinate reference system (inputCrs) to a corresponding output CRS generated ...
Definition: qgsprocessingalgorithm.cpp:1065
QgsFeatureList
QList< QgsFeature > QgsFeatureList
Definition: qgsfeature.h:882
QgsProcessingAlgorithm::shortHelpString
virtual QString shortHelpString() const
Returns a localised short helper string for the algorithm.
Definition: qgsprocessingalgorithm.cpp:65
QgsCoordinateReferenceSystem
This class represents a coordinate reference system (CRS).
Definition: qgscoordinatereferencesystem.h:211
QgsProcessingFeatureBasedAlgorithm::outputLayerType
virtual QgsProcessing::SourceType outputLayerType() const
Returns the layer type for layers generated by this algorithm, if this is possible to determine in ad...
Definition: qgsprocessingalgorithm.cpp:1040
QgsProcessingFeatureBasedAlgorithm::outputName
virtual QString outputName() const =0
Returns the translated, user visible name for any layers created by this algorithm.
QgsProcessingFeatureBasedAlgorithm::outputFields
virtual QgsFields outputFields(const QgsFields &inputFields) const
Maps the input source fields (inputFields) to corresponding output fields generated by the algorithm.
Definition: qgsprocessingalgorithm.cpp:1060
QgsProcessingAlgorithm::icon
virtual QIcon icon() const
Returns an icon for the algorithm.
Definition: qgsprocessingalgorithm.cpp:80
QgsProcessingFeatureBasedAlgorithm::inputParameterName
virtual QString inputParameterName() const
Returns the name of the parameter corresponding to the input layer.
Definition: qgsprocessingalgorithm.cpp:1025
QgsMapLayer
Base class for all map layer types. This is the base class for all map layer types (vector,...
Definition: qgsmaplayer.h:72
QgsProcessingAlgorithm::group
virtual QString group() const
Returns the name of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:225
QgsFeature
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition: qgsfeature.h:55
QgsProcessing::SourceType
SourceType
Data source types enum.
Definition: qgsprocessing.h:45
QgsProcessingFeatureBasedAlgorithm::inputLayerTypes
virtual QList< int > inputLayerTypes() const
Returns the valid input layer types for the source layer for this algorithm.
Definition: qgsprocessingalgorithm.cpp:1035
QgsProcessingAlgorithm::tags
virtual QStringList tags() const
Returns a list of tags which relate to the algorithm, and are used to assist users in searching for s...
Definition: qgsprocessingalgorithm.h:181