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448 lines
16 KiB
Plaintext
448 lines
16 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/processing/qgsprocessingalgorithm.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsProcessingAlgorithm
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{
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%Docstring
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Abstract base class for processing algorithms.
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.. versionadded:: 3.0
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%End
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%TypeHeaderCode
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#include "qgsprocessingalgorithm.h"
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%End
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public:
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enum Flag
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{
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FlagHideFromToolbox,
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FlagHideFromModeler,
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FlagSupportsBatch,
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FlagCanCancel,
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FlagDeprecated,
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};
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typedef QFlags<QgsProcessingAlgorithm::Flag> Flags;
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QgsProcessingAlgorithm();
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%Docstring
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Constructor for QgsProcessingAlgorithm.
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%End
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virtual ~QgsProcessingAlgorithm();
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virtual QString name() const = 0;
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%Docstring
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Returns the algorithm name, used for identifying the algorithm. This string
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should be fixed for the algorithm, and must not be localised. The name should
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be unique within each provider. Names should contain lowercase alphanumeric characters
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only and no spaces or other formatting characters.
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.. seealso:: displayName()
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.. seealso:: group()
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.. seealso:: tags()
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:rtype: str
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%End
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QString id() const;
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%Docstring
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Returns the unique ID for the algorithm, which is a combination of the algorithm
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provider's ID and the algorithms unique name (e.g. "qgis:mergelayers" ).
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.. seealso:: name()
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.. seealso:: provider()
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:rtype: str
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%End
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virtual QString displayName() const = 0;
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%Docstring
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Returns the translated algorithm name, which should be used for any user-visible display
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of the algorithm name.
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.. seealso:: name()
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:rtype: str
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%End
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virtual QStringList tags() const;
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%Docstring
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Returns a list of tags which relate to the algorithm, and are used to assist users in searching
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for suitable algorithms. These tags should be localised.
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:rtype: list of str
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%End
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virtual QString shortHelpString() const;
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%Docstring
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Returns a localised short helper string for the algorithm. This string should provide a basic description
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about what the algorithm does and the parameters and outputs associated with it.
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.. seealso:: helpString()
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.. seealso:: helpUrl()
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:rtype: str
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%End
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virtual QString helpString() const;
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%Docstring
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Returns a localised help string for the algorithm. Algorithm subclasses should implement either
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helpString() or helpUrl().
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.. seealso:: helpUrl()
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.. seealso:: shortHelpString()
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:rtype: str
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%End
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virtual QString helpUrl() const;
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%Docstring
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Returns a url pointing to the algorithm's help page.
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.. seealso:: helpString()
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.. seealso:: shortHelpString()
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:rtype: str
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%End
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virtual QIcon icon() const;
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%Docstring
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Returns an icon for the algorithm.
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.. seealso:: svgIconPath()
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:rtype: QIcon
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%End
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virtual QString svgIconPath() const;
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%Docstring
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Returns a path to an SVG version of the algorithm's icon.
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.. seealso:: icon()
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:rtype: str
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%End
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virtual QString group() const;
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%Docstring
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Returns the name of the group this algorithm belongs to. This string
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should be localised.
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.. seealso:: tags()
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:rtype: str
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%End
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virtual Flags flags() const;
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%Docstring
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Returns the flags indicating how and when the algorithm operates and should be exposed to users.
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Default flags are FlagSupportsBatch and FlagCanCancel.
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:rtype: Flags
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%End
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virtual bool canExecute( QString *errorMessage /Out/ = 0 ) const;
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%Docstring
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Returns true if the algorithm can execute. Algorithm subclasses can return false
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here to indicate that they are not able to execute, e.g. as a result of unmet
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external dependencies. If specified, the ``errorMessage`` argument will be filled
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with a localised error message describing why the algorithm cannot execute.
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:rtype: bool
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%End
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virtual bool checkParameterValues( const QVariantMap ¶meters,
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QgsProcessingContext &context, QString *message /Out/ = 0 ) const;
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%Docstring
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Checks the supplied ``parameter`` values to verify that they satisfy the requirements
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of this algorithm in the supplied ``context``. The ``message`` parameter will be
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filled with explanatory text if validation fails.
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Overridden implementations should also check this base class implementation.
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:return: true if parameters are acceptable for the algorithm.
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:rtype: bool
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%End
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QgsProcessingProvider *provider() const;
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%Docstring
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Returns the provider to which this algorithm belongs.
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:rtype: QgsProcessingProvider
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%End
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QgsProcessingParameterDefinitions parameterDefinitions() const;
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%Docstring
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Returns an ordered list of parameter definitions utilized by the algorithm.
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.. seealso:: addParameter()
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.. seealso:: parameterDefinition()
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.. seealso:: destinationParameterDefinitions()
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:rtype: QgsProcessingParameterDefinitions
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%End
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const QgsProcessingParameterDefinition *parameterDefinition( const QString &name ) const;
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%Docstring
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Returns a matching parameter by ``name``. Matching is done in a case-insensitive
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manner.
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.. seealso:: parameterDefinitions()
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:rtype: QgsProcessingParameterDefinition
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%End
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int countVisibleParameters() const;
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%Docstring
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Returns the number of visible (non-hidden) parameters defined by this
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algorithm.
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:rtype: int
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%End
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QgsProcessingParameterDefinitions destinationParameterDefinitions() const;
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%Docstring
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Returns a list of destination parameters definitions utilized by the algorithm.
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.. seealso:: QgsProcessingParameterDefinition.isDestination()
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.. seealso:: parameterDefinitions()
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:rtype: QgsProcessingParameterDefinitions
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%End
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QgsProcessingOutputDefinitions outputDefinitions() const;
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%Docstring
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Returns an ordered list of output definitions utilized by the algorithm.
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.. seealso:: addOutput()
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.. seealso:: outputDefinition()
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:rtype: QgsProcessingOutputDefinitions
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%End
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const QgsProcessingOutputDefinition *outputDefinition( const QString &name ) const;
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%Docstring
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Returns a matching output by ``name``. Matching is done in a case-insensitive
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manner.
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.. seealso:: outputDefinitions()
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:rtype: QgsProcessingOutputDefinition
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%End
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QVariantMap run( const QVariantMap ¶meters,
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QgsProcessingContext &context, QgsProcessingFeedback *feedback ) const;
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%Docstring
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Executes the algorithm using the specified ``parameters``.
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The ``context`` argument specifies the context in which the algorithm is being run.
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Algorithm progress should be reported using the supplied ``feedback`` object.
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:return: A map of algorithm outputs. These may be output layer references, or calculated
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values such as statistical calculations.
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:rtype: QVariantMap
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%End
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virtual QWidget *createCustomParametersWidget( QWidget *parent = 0 ) const /Factory/;
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%Docstring
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If an algorithm subclass implements a custom parameters widget, a copy of this widget
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should be constructed and returned by this method.
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The base class implementation returns None, which indicates that an autogenerated
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parameters widget should be used.
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:rtype: QWidget
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%End
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QgsExpressionContext createExpressionContext( const QVariantMap ¶meters,
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QgsProcessingContext &context ) const;
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%Docstring
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Creates an expression context relating to the algorithm. This can be called by algorithms
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to create a new expression context ready for evaluating expressions within the algorithm.
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:rtype: QgsExpressionContext
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%End
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protected:
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bool addParameter( QgsProcessingParameterDefinition *parameterDefinition /Transfer/ );
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%Docstring
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Adds a parameter ``definition`` to the algorithm. Ownership of the definition is transferred to the algorithm.
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Returns true if parameter could be successfully added, or false if the parameter could not be added (e.g.
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as a result of a duplicate name).
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.. seealso:: addOutput()
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:rtype: bool
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%End
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bool addOutput( QgsProcessingOutputDefinition *outputDefinition /Transfer/ );
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%Docstring
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Adds an output ``definition`` to the algorithm. Ownership of the definition is transferred to the algorithm.
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Returns true if the output could be successfully added, or false if the output could not be added (e.g.
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as a result of a duplicate name).
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.. seealso:: addParameter()
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:rtype: bool
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%End
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virtual QVariantMap processAlgorithm( const QVariantMap ¶meters,
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QgsProcessingContext &context, QgsProcessingFeedback *feedback ) const = 0;
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%Docstring
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Runs the algorithm using the specified ``parameters``. Algorithms should implement
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their custom processing logic here.
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The ``context`` argument specifies the context in which the algorithm is being run.
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Algorithm progress should be reported using the supplied ``feedback`` object. Additionally,
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well-behaved algorithms should periodically check ``feedback`` to determine whether the
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algorithm should be canceled and exited early.
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:return: A map of algorithm outputs. These may be output layer references, or calculated
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values such as statistical calculations.
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:rtype: QVariantMap
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%End
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QString parameterAsString( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a static string value.
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:rtype: str
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%End
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QString parameterAsExpression( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to an expression.
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:rtype: str
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%End
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double parameterAsDouble( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a static double value.
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:rtype: float
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%End
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int parameterAsInt( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a static integer value.
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:rtype: int
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%End
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int parameterAsEnum( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a enum value.
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:rtype: int
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%End
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QList<int> parameterAsEnums( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to list of enum values.
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:rtype: list of int
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%End
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bool parameterAsBool( const QVariantMap ¶meters, const QString &name, const QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a static boolean value.
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:rtype: bool
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%End
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QgsFeatureSink *parameterAsSink( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context,
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const QgsFields &fields, QgsWkbTypes::Type geometryType, const QgsCoordinateReferenceSystem &crs,
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QString &destinationIdentifier /Out/ ) const /Factory/;
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%Docstring
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Evaluates the parameter with matching ``name`` to a feature sink.
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Sinks will either be taken from ``context``'s active project, or created from external
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providers and stored temporarily in the ``context``.
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The ``fields``, ``geometryType`` and ``crs`` parameters dictate the properties
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of the resulting feature sink.
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The ``destinationIdentifier`` argument will be set to a string which can be used to retrieve the layer corresponding
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to the sink, e.g. via calling QgsProcessingUtils.mapLayerFromString().
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This function creates a new object and the caller takes responsibility for deleting the returned object.
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:rtype: QgsFeatureSink
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%End
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QgsFeatureSource *parameterAsSource( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const /Factory/;
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%Docstring
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Evaluates the parameter with matching ``definition`` to a feature source.
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Sources will either be taken from ``context``'s active project, or loaded from external
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sources and stored temporarily in the ``context``.
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This function creates a new object and the caller takes responsibility for deleting the returned object.
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:rtype: QgsFeatureSource
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%End
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QgsMapLayer *parameterAsLayer( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a map layer.
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Layers will either be taken from ``context``'s active project, or loaded from external
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sources and stored temporarily in the ``context``. In either case, callers do not
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need to handle deletion of the returned layer.
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:rtype: QgsMapLayer
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%End
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QgsRasterLayer *parameterAsRasterLayer( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a raster layer.
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Layers will either be taken from ``context``'s active project, or loaded from external
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sources and stored temporarily in the ``context``. In either case, callers do not
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need to handle deletion of the returned layer.
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:rtype: QgsRasterLayer
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%End
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QgsVectorLayer *parameterAsVectorLayer( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a vector layer.
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Layers will either be taken from ``context``'s active project, or loaded from external
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sources and stored temporarily in the ``context``. In either case, callers do not
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need to handle deletion of the returned layer.
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:rtype: QgsVectorLayer
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%End
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QgsCoordinateReferenceSystem parameterAsCrs( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a coordinate reference system.
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:rtype: QgsCoordinateReferenceSystem
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%End
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QgsRectangle parameterAsExtent( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a rectangular extent.
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:rtype: QgsRectangle
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%End
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QgsPointXY parameterAsPoint( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a point.
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:rtype: QgsPointXY
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%End
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QString parameterAsFile( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a file/folder name.
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:rtype: str
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%End
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QVariantList parameterAsMatrix( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a matrix/table of values.
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Tables are collapsed to a 1 dimensional list.
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:rtype: QVariantList
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%End
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QList< QgsMapLayer *> parameterAsLayerList( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a list of map layers.
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:rtype: list of QgsMapLayer
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%End
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QList<double> parameterAsRange( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a range of values.
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:rtype: list of float
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%End
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QStringList parameterAsFields( const QVariantMap ¶meters, const QString &name, QgsProcessingContext &context ) const;
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%Docstring
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Evaluates the parameter with matching ``name`` to a list of fields.
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:rtype: list of str
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%End
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private:
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QgsProcessingAlgorithm( const QgsProcessingAlgorithm &other );
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};
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QFlags<QgsProcessingAlgorithm::Flag> operator|(QgsProcessingAlgorithm::Flag f1, QFlags<QgsProcessingAlgorithm::Flag> f2);
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/processing/qgsprocessingalgorithm.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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