mirror of
https://github.com/qgis/QGIS.git
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490 lines
15 KiB
Plaintext
490 lines
15 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/raster/qgsrasterlayer.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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typedef QList < QPair< QString, QColor > > QgsLegendColorList;
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class QgsRasterLayer : QgsMapLayer, QgsAbstractProfileSource
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{
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%Docstring(signature="appended")
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Represents a raster layer.
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A :py:class:`QgsRasterLayer` is instantiated by specifying the name of a data provider,
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such as "gdal" or "wms", and a url defining the specific data set to connect to.
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The raster layer constructor in turn instantiates a :py:class:`QgsRasterDataProvider` subclass
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corresponding to the provider type, and passes it the url. The data provider
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connects to the data source.
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Sample usage of the :py:class:`QgsRasterLayer` class:
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.. code-block:: python
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my_raster_layer = QgsRasterLayer("/path/to/file.tif", "my layer")
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%End
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%TypeHeaderCode
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#include "qgsrasterlayer.h"
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%End
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public:
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static const double SAMPLE_SIZE;
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static const QgsContrastEnhancement::ContrastEnhancementAlgorithm SINGLE_BAND_ENHANCEMENT_ALGORITHM;
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static const QgsContrastEnhancement::ContrastEnhancementAlgorithm MULTIPLE_BAND_SINGLE_BYTE_ENHANCEMENT_ALGORITHM;
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static const QgsContrastEnhancement::ContrastEnhancementAlgorithm MULTIPLE_BAND_MULTI_BYTE_ENHANCEMENT_ALGORITHM;
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static const QgsRasterMinMaxOrigin::Limits SINGLE_BAND_MIN_MAX_LIMITS;
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static const QgsRasterMinMaxOrigin::Limits MULTIPLE_BAND_SINGLE_BYTE_MIN_MAX_LIMITS;
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static const QgsRasterMinMaxOrigin::Limits MULTIPLE_BAND_MULTI_BYTE_MIN_MAX_LIMITS;
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QgsRasterLayer();
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%Docstring
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Constructor. Provider is not set.
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%End
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struct LayerOptions
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{
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explicit LayerOptions( bool loadDefaultStyle = true,
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const QgsCoordinateTransformContext &transformContext = QgsCoordinateTransformContext() );
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%Docstring
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Constructor for LayerOptions.
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%End
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bool loadDefaultStyle;
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QgsCoordinateTransformContext transformContext;
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bool skipCrsValidation;
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bool loadDefaultRat;
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QString fileBasedRat;
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};
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explicit QgsRasterLayer( const QString &uri,
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const QString &baseName = QString(),
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const QString &providerType = "gdal",
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const QgsRasterLayer::LayerOptions &options = QgsRasterLayer::LayerOptions() );
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%Docstring
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This is the constructor for the RasterLayer class.
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The main tasks carried out by the constructor are:
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- Load the rasters default style (.qml) file if it exists
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- Populate the RasterStatsVector with initial values for each band.
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- Calculate the layer extents
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- Determine whether the layer is gray, paletted or multiband.
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- Assign sensible defaults for the red, green, blue and gray bands.
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%End
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~QgsRasterLayer();
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SIP_PYOBJECT __repr__();
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%MethodCode
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QString str = QStringLiteral( "<QgsRasterLayer: '%1' (%2)>" ).arg( sipCpp->name(), sipCpp->dataProvider() ? sipCpp->dataProvider()->name() : QStringLiteral( "Invalid" ) );
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sipRes = PyUnicode_FromString( str.toUtf8().constData() );
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%End
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virtual QgsRasterLayer *clone() const /Factory/;
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%Docstring
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Returns a new instance equivalent to this one. A new provider is
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created for the same data source and renderer is cloned too.
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:return: a new layer instance
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.. versionadded:: 3.0
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%End
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virtual QgsAbstractProfileGenerator *createProfileGenerator( const QgsProfileRequest &request ) /Factory/;
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enum ColorShadingAlgorithm
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{
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UndefinedShader,
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PseudoColorShader,
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FreakOutShader,
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ColorRampShader,
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UserDefinedShader
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};
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enum LayerType
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{
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GrayOrUndefined,
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Palette,
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Multiband,
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ColorLayer
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};
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static bool isValidRasterFileName( const QString &fileNameQString, QString &retError );
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%Docstring
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This helper checks to see whether the file name appears to be a valid
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raster file name. If the file name looks like it could be valid,
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but some sort of error occurs in processing the file, the error is
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returned in ``retError``.
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%End
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static bool isValidRasterFileName( const QString &fileNameQString );
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static QDateTime lastModified( const QString &name );
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%Docstring
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Returns time stamp for given file name
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%End
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void setDataProvider( const QString &provider ) /Deprecated/;
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%Docstring
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Set the data provider.
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.. deprecated::
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Use the version with ProviderOptions instead.
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%End
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void setDataProvider( const QString &provider, const QgsDataProvider::ProviderOptions &options, QgsDataProvider::ReadFlags flags = QgsDataProvider::ReadFlags() );
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%Docstring
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Set the data provider.
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:param provider: provider key string, must match a valid :py:class:`QgsRasterDataProvider` key. E.g. "gdal", "wms", etc.
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:param options: provider options
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:param flags: provider flags since QGIS 3.16
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.. versionadded:: 3.2
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%End
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LayerType rasterType();
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%Docstring
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Returns the raster layer type (which is a read only property).
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%End
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void setRenderer( QgsRasterRenderer *renderer /Transfer/ );
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%Docstring
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Sets the raster's ``renderer``. Takes ownership of the renderer object.
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.. seealso:: :py:func:`renderer`
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%End
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QgsRasterRenderer *renderer() const;
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%Docstring
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Returns the raster's renderer.
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.. seealso:: :py:func:`setRenderer`
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%End
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QgsRasterResampleFilter *resampleFilter() const;
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%Docstring
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Returns the raster's resample filter.
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.. seealso:: :py:func:`brightnessFilter`
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.. seealso:: :py:func:`hueSaturationFilter`
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%End
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QgsBrightnessContrastFilter *brightnessFilter() const;
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%Docstring
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Returns the raster's brightness/contrast filter.
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.. seealso:: :py:func:`resampleFilter`
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.. seealso:: :py:func:`hueSaturationFilter`
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%End
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QgsHueSaturationFilter *hueSaturationFilter() const;
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%Docstring
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Returns the raster's hue/saturation filter.
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.. seealso:: :py:func:`resampleFilter`
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.. seealso:: :py:func:`brightnessFilter`
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%End
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void setResamplingStage( Qgis::RasterResamplingStage stage );
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%Docstring
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Select which stage of the pipe should apply resampling.
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.. seealso:: :py:func:`QgsRasterPipe.setResamplingStage`
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.. versionadded:: 3.16
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%End
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Qgis::RasterResamplingStage resamplingStage() const;
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%Docstring
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Returns which stage of the pipe should apply resampling.
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.. seealso:: :py:func:`QgsRasterPipe.resamplingStage`
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.. versionadded:: 3.16
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%End
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QgsRasterPipe *pipe();
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%Docstring
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Returns the raster pipe.
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%End
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int width() const;
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%Docstring
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Returns the width of the (unclipped) raster.
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.. seealso:: :py:func:`height`
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%End
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int height() const;
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%Docstring
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Returns the height of the (unclipped) raster.
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.. seealso:: :py:func:`width`
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%End
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int bandCount() const;
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%Docstring
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Returns the number of bands in this layer.
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%End
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QString bandName( int bandNoInt ) const;
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%Docstring
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Returns the name of a band given its number.
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%End
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QgsRasterAttributeTable *attributeTable( int bandNumber ) const;
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%Docstring
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Returns the (possibly NULL) raster attribute table for the given band ``bandNumber``.
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.. versionadded:: 3.30
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%End
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virtual QgsRasterDataProvider *dataProvider();
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%Docstring
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Returns the source data provider.
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This will be ``None`` if the layer is invalid.
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%End
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virtual const QgsRasterDataProvider *dataProvider() const /PyName=constDataProvider/;
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%Docstring
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Returns the source data provider.
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This will be ``None`` if the layer is invalid.
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%End
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virtual void reload();
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virtual QgsMapLayerRenderer *createMapRenderer( QgsRenderContext &rendererContext ) /Factory/;
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void draw( QPainter *theQPainter,
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QgsRasterViewPort *myRasterViewPort,
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const QgsMapToPixel *qgsMapToPixel = 0 );
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%Docstring
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This is an overloaded version of the :py:func:`~QgsRasterLayer.draw` function that is called by both :py:func:`~QgsRasterLayer.draw` and thumbnailAsPixmap
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%End
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QgsLegendColorList legendSymbologyItems() const /Deprecated/;
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%Docstring
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Returns a list with classification items (Text and color).
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.. deprecated::
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use :py:func:`QgsRasterRenderer.createLegendNodes()` instead.
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%End
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virtual bool isSpatial() const;
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virtual QString htmlMetadata() const;
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virtual Qgis::MapLayerProperties properties() const;
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QPixmap paletteAsPixmap( int bandNumber = 1 );
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%Docstring
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Returns a 100x100 pixmap of the color palette. If the layer has no palette a white pixmap will be returned
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:param bandNumber: the number of the band to use for generating a pixmap of the associated palette
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%End
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QString providerType() const;
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%Docstring
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[ data provider interface ] Which provider is being used for this Raster Layer?
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%End
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double rasterUnitsPerPixelX() const;
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%Docstring
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Returns the number of raster units per each raster pixel in X axis.
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In a world file, this is normally the first row (without the sign). (E.g.
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the value reported by the GDAL geotransform[1]).
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.. seealso:: :py:func:`rasterUnitsPerPixelY`
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%End
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double rasterUnitsPerPixelY() const;
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%Docstring
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Returns the number of raster units per each raster pixel in Y axis.
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In a world file, this is normally the first row (without the sign).
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.. seealso:: :py:func:`rasterUnitsPerPixelX`
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%End
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virtual void setOpacity( double opacity ) ${SIP_FINAL};
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virtual double opacity() const ${SIP_FINAL};
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void setContrastEnhancement( QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm,
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QgsRasterMinMaxOrigin::Limits limits = QgsRasterMinMaxOrigin::MinMax,
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const QgsRectangle &extent = QgsRectangle(),
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int sampleSize = QgsRasterLayer::SAMPLE_SIZE,
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bool generateLookupTableFlag = true );
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%Docstring
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Set contrast enhancement algorithm
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:param algorithm: Contrast enhancement algorithm
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:param limits: Limits
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:param extent: Extent used to calculate limits, if empty, use full layer extent
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:param sampleSize: Size of data sample to calculate limits, if 0, use full resolution
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:param generateLookupTableFlag: Generate lookup table.
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%End
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virtual QString subsetString() const;
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%Docstring
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Returns the string (typically sql) used to define a subset of the layer.
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:return: The subset string or null QString if not implemented by the provider
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.. versionadded:: 3.12
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%End
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virtual bool setSubsetString( const QString &subset );
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%Docstring
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Sets the string (typically sql) used to define a subset of the layer
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:param subset: The subset string. This may be the where clause of a sql statement
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or other definition string specific to the underlying dataprovider
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and data store.
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:return: ``True``, when setting the subset string was successful, ``False`` otherwise
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.. versionadded:: 3.12
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%End
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void setDefaultContrastEnhancement();
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%Docstring
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Sets the default contrast enhancement
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%End
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virtual QStringList subLayers() const;
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QImage previewAsImage( QSize size, const QColor &bgColor = Qt::white,
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QImage::Format format = QImage::Format_ARGB32_Premultiplied );
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%Docstring
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Draws a preview of the rasterlayer into a QImage
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.. versionadded:: 2.4
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%End
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virtual void setLayerOrder( const QStringList &layers );
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virtual void setSubLayerVisibility( const QString &name, bool vis );
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virtual QDateTime timestamp() const;
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virtual bool accept( QgsStyleEntityVisitorInterface *visitor ) const;
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bool writeSld( QDomNode &node, QDomDocument &doc, QString &errorMessage, const QVariantMap &props = QVariantMap() ) const;
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%Docstring
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Writes the symbology of the layer into the document provided in SLD 1.0.0 format
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:param node: the node that will have the style element added to it.
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:param doc: the document that will have the QDomNode added.
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:param errorMessage: reference to string that will be updated with any error messages
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:param props: a open ended set of properties that can drive/inform the SLD encoding
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:return: ``True`` in case of success
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.. versionadded:: 3.6
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%End
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bool ignoreExtents() const;
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%Docstring
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If the ignoreExtent flag is set, the layer will also render outside the
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bounding box reported by the data provider.
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To be used for example for WMS layers with labels or symbology that happens
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to be drawn outside the data extent.
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.. versionadded:: 3.10
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%End
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virtual QgsMapLayerTemporalProperties *temporalProperties();
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virtual QgsMapLayerElevationProperties *elevationProperties();
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public slots:
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void showStatusMessage( const QString &message );
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virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
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%Docstring
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Sets the coordinate transform context to ``transformContext``
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.. versionadded:: 3.8
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%End
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signals:
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void subsetStringChanged();
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%Docstring
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Emitted when the layer's subset string has changed.
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.. versionadded:: 3.12
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%End
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protected:
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virtual bool readSymbology( const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories );
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virtual bool readStyle( const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories );
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virtual bool readXml( const QDomNode &layer_node, QgsReadWriteContext &context );
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virtual bool writeSymbology( QDomNode &, QDomDocument &doc, QString &errorMessage,
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const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) const;
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virtual bool writeStyle( QDomNode &node, QDomDocument &doc, QString &errorMessage,
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const QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) const;
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virtual bool writeXml( QDomNode &layer_node, QDomDocument &doc, const QgsReadWriteContext &context ) const;
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virtual QString encodedSource( const QString &source, const QgsReadWriteContext &context ) const;
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virtual QString decodedSource( const QString &source, const QString &provider, const QgsReadWriteContext &context ) const;
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};
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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/raster/qgsrasterlayer.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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