QGIS API Documentation 3.38.0-Grenoble (exported)
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qgsalgorithmcentroid.h
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1/***************************************************************************
2 qgsalgorithmcentroid.h
3 ----------------------
4 begin : April 2017
5 copyright : (C) 2017 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 QGSALGORITHMCENTROID_H
19#define QGSALGORITHMCENTROID_H
20
21#define SIP_NO_FILE
22
23#include "qgis_sip.h"
25#include "qgsapplication.h"
26
28
32class QgsCentroidAlgorithm : public QgsProcessingFeatureBasedAlgorithm
33{
34
35 public:
36
37 QgsCentroidAlgorithm() = default;
38 QIcon icon() const override { return QgsApplication::getThemeIcon( QStringLiteral( "/algorithms/mAlgorithmCentroids.svg" ) ); }
39 QString svgIconPath() const override { return QgsApplication::iconPath( QStringLiteral( "/algorithms/mAlgorithmCentroids.svg" ) ); }
40 QString name() const override;
41 QString displayName() const override;
42 QStringList tags() const override;
43 QString group() const override;
44 QString groupId() const override;
45 QString shortHelpString() const override;
46 QgsCentroidAlgorithm *createInstance() const override SIP_FACTORY;
47 void initParameters( const QVariantMap &configuration = QVariantMap() ) override;
48
49 protected:
50
51 QString outputName() const override;
52 Qgis::ProcessingSourceType outputLayerType() const override { return Qgis::ProcessingSourceType::VectorPoint; }
53 Qgis::WkbType outputWkbType( Qgis::WkbType inputWkbType ) const override { Q_UNUSED( inputWkbType ) return Qgis::WkbType::Point; }
54 QgsFeatureSink::SinkFlags sinkFlags() const override;
55
56 bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
57 QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
58
59 private:
60
61 bool mAllParts = false;
62 bool mDynamicAllParts = false;
63 QgsProperty mAllPartsProperty;
64};
65
67
68#endif // QGSALGORITHMCENTROID_H
69
70
ProcessingSourceType
Processing data source types.
Definition qgis.h:2995
@ VectorPoint
Vector point layers.
WkbType
The WKB type describes the number of dimensions a geometry has.
Definition qgis.h:201
static QIcon getThemeIcon(const QString &name, const QColor &fillColor=QColor(), const QColor &strokeColor=QColor())
Helper to get a theme icon.
static QString iconPath(const QString &iconFile)
Returns path to the desired icon file.
QFlags< SinkFlag > SinkFlags
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:58
virtual QgsProcessingAlgorithm * createInstance() const =0
Creates a new instance of the algorithm class.
virtual QString group() const
Returns the name of the group this algorithm belongs to.
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
virtual QIcon icon() const
Returns an icon for the algorithm.
virtual QString shortHelpString() const
Returns a localised short helper string for the algorithm.
virtual QString displayName() const =0
Returns the translated algorithm name, which should be used for any user-visible display of the algor...
virtual QStringList tags() const
Returns a list of tags which relate to the algorithm, and are used to assist users in searching for s...
virtual QString svgIconPath() const
Returns a path to an SVG version of the algorithm's icon.
virtual QString name() const =0
Returns the algorithm name, used for identifying the algorithm.
Contains information about the context in which a processing algorithm is executed.
An abstract QgsProcessingAlgorithm base class for processing algorithms which operate "feature-by-fea...
Base class for providing feedback from a processing algorithm.
A store for object properties.
#define SIP_FACTORY
Definition qgis_sip.h:76
QList< QgsFeature > QgsFeatureList