QGIS API Documentation  3.26.3-Buenos Aires (65e4edfdad)
qgsalgorithmrasterlayerproperties.h
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1 /***************************************************************************
2  qgsalgorithmrasterlayerproperties.cpp
3  ---------------------
4  begin : April 2021
5  copyright : (C) 2021 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
7 
8  ***************************************************************************/
9 
10 /***************************************************************************
11  * *
12  * This program is free software; you can redistribute it and/or modify *
13  * it under the terms of the GNU General Public License as published by *
14  * the Free Software Foundation; either version 2 of the License, or *
15  * (at your option) any later version. *
16  * *
17  ***************************************************************************/
18 
19 #ifndef QGSALGORITHMRASTERLAYERPROPERTIES_H
20 #define QGSALGORITHMRASTERLAYERPROPERTIES_H
21 
22 #define SIP_NO_FILE
23 
24 #include "qgis_sip.h"
25 #include "qgsprocessingalgorithm.h"
26 
28 
32 class QgsRasterLayerPropertiesAlgorithm : public QgsProcessingAlgorithm
33 {
34 
35  public:
36 
37  QgsRasterLayerPropertiesAlgorithm() = default;
38  void initAlgorithm( const QVariantMap &configuration = QVariantMap() ) override;
39  QString name() const override;
40  QString displayName() const override;
41  QStringList tags() const override;
42  QString group() const override;
43  QString groupId() const override;
44  QString shortHelpString() const override;
45  QgsRasterLayerPropertiesAlgorithm *createInstance() const override SIP_FACTORY;
46 
47  protected:
48 
49  bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
50  QVariantMap processAlgorithm( const QVariantMap &parameters,
51  QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
52 
53  private:
54 
55  int mBandCount = 0;
56  bool mHasNoDataValue = false;
57  QVariant mNoDataValue;
58  int mLayerWidth;
59  int mLayerHeight;
60  QgsRectangle mExtent;
62  double mRasterUnitsPerPixelX;
63  double mRasterUnitsPerPixelY;
64 
65 };
66 
68 
69 #endif // QGSALGORITHMRASTERLAYERPROPERTIES_H
70 
71 
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
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::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
QgsRectangle
A rectangle specified with double values.
Definition: qgsrectangle.h:41
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.
QgsProcessingAlgorithm::processAlgorithm
virtual QVariantMap processAlgorithm(const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback) SIP_THROW(QgsProcessingException)=0
Runs the algorithm using the specified parameters.
QgsProcessingContext
Contains information about the context in which a processing algorithm is executed.
Definition: qgsprocessingcontext.h:46
qgsprocessingalgorithm.h
qgis_sip.h
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
QgsProcessingAlgorithm
Abstract base class for processing algorithms.
Definition: qgsprocessingalgorithm.h:52
QgsProcessingAlgorithm::group
virtual QString group() const
Returns the name of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:225
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
QgsProcessingAlgorithm::initAlgorithm
virtual void initAlgorithm(const QVariantMap &configuration=QVariantMap())=0
Initializes the algorithm using the specified configuration.