mirror of
https://github.com/qgis/QGIS.git
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479 lines
13 KiB
Plaintext
479 lines
13 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/raster/qgsrasterdataprovider.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 QgsImageFetcher : QObject
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{
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%Docstring
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Handles asynchronous download of images
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.. versionadded:: 2.8
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%End
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%TypeHeaderCode
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#include "qgsrasterdataprovider.h"
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%End
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public:
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QgsImageFetcher( QObject *parent = 0 );
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%Docstring
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Constructor
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%End
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virtual void start() = 0;
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%Docstring
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Starts the image download
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.. note::
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Make sure to connect to "finish" and "error" before starting *
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%End
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signals:
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void finish( const QImage &legend );
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%Docstring
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Emitted when the download completes
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\param legend The downloaded legend image *
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%End
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void progress( qint64 received, qint64 total );
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%Docstring
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Emitted to report progress
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%End
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void error( const QString &msg );
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%Docstring
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Emitted when an error occurs
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%End
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};
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class QgsRasterDataProvider : QgsDataProvider, QgsRasterInterface
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{
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%Docstring
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Base class for raster data providers.
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%End
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%TypeHeaderCode
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#include "qgsrasterdataprovider.h"
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%End
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public:
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QgsRasterDataProvider();
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QgsRasterDataProvider( const QString &uri );
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virtual QgsRasterInterface *clone() const = 0;
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virtual bool setInput( QgsRasterInterface *input );
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%Docstring
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It makes no sense to set input on provider */
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:rtype: bool
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%End
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virtual QgsRectangle extent() const = 0;
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virtual Qgis::DataType dataType( int bandNo ) const = 0;
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%Docstring
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Returns data type for the band specified by number
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:rtype: Qgis.DataType
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%End
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virtual Qgis::DataType sourceDataType( int bandNo ) const = 0;
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%Docstring
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Returns source data type for the band specified by number,
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source data type may be shorter than dataType
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:rtype: Qgis.DataType
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%End
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virtual int colorInterpretation( int bandNo ) const;
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%Docstring
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Returns data type for the band specified by number
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:rtype: int
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%End
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QString colorName( int colorInterpretation ) const;
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%Docstring
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:rtype: str
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%End
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virtual bool reload();
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%Docstring
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Reload data (data could change)
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:rtype: bool
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%End
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virtual QString colorInterpretationName( int bandNo ) const;
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%Docstring
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:rtype: str
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%End
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virtual double bandScale( int bandNo ) const;
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%Docstring
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Read band scale for raster value
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.. versionadded:: 2.3
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:rtype: float
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%End
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virtual double bandOffset( int bandNo ) const;
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%Docstring
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Read band offset for raster value
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.. versionadded:: 2.3
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:rtype: float
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%End
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virtual QgsRasterBlock *block( int bandNo, const QgsRectangle &boundingBox, int width, int height, QgsRasterBlockFeedback *feedback = 0 );
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%Docstring
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Read block of data using given extent and size.
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:rtype: QgsRasterBlock
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%End
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virtual bool sourceHasNoDataValue( int bandNo ) const;
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%Docstring
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Return true if source band has no data value
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:rtype: bool
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%End
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virtual bool useSourceNoDataValue( int bandNo ) const;
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%Docstring
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Get source nodata value usage
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:rtype: bool
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%End
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virtual void setUseSourceNoDataValue( int bandNo, bool use );
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%Docstring
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Set source nodata value usage
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%End
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virtual double sourceNoDataValue( int bandNo ) const;
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%Docstring
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Value representing no data value.
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:rtype: float
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%End
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virtual void setUserNoDataValue( int bandNo, const QgsRasterRangeList &noData );
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virtual QgsRasterRangeList userNoDataValues( int bandNo ) const;
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%Docstring
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Get list of user no data value ranges
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:rtype: QgsRasterRangeList
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%End
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virtual QList<QgsColorRampShader::ColorRampItem> colorTable( int bandNo ) const;
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%Docstring
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:rtype: list of QgsColorRampShader.ColorRampItem
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%End
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virtual QStringList subLayers() const;
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%Docstring
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Returns the sublayers of this layer - useful for providers that manage
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their own layers, such as WMS *
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:rtype: list of str
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%End
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virtual bool supportsLegendGraphic() const;
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%Docstring
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Returns whether the provider supplies a legend graphic
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:rtype: bool
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%End
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virtual QgsImageFetcher *getLegendGraphicFetcher( const QgsMapSettings *mapSettings ) /Factory/;
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%Docstring
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Get an image downloader for the raster legend
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\param mapSettings map settings for legend providers supporting
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contextual legends.
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:return: a download handler or null if the provider does not support
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legend at all. Ownership of the returned object is transferred
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to caller.
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.. versionadded:: 2.8
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:rtype: QgsImageFetcher
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%End
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virtual QString buildPyramids( const QList<QgsRasterPyramid> &pyramidList,
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const QString &resamplingMethod = "NEAREST",
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QgsRaster::RasterPyramidsFormat format = QgsRaster::PyramidsGTiff,
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const QStringList &configOptions = QStringList(),
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QgsRasterBlockFeedback *feedback = 0 );
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%Docstring
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Create pyramid overviews
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:rtype: str
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%End
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virtual QList<QgsRasterPyramid> buildPyramidList( QList<int> overviewList = QList<int>() );
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%Docstring
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Accessor for the raster layers pyramid list.
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\param overviewList used to construct the pyramid list (optional), when empty the list is defined by the provider.
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A pyramid list defines the
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POTENTIAL pyramids that can be in a raster. To know which of the pyramid layers
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ACTUALLY exists you need to look at the existsFlag member in each struct stored in the
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list.
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:rtype: list of QgsRasterPyramid
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%End
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bool hasPyramids();
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%Docstring
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Returns true if raster has at least one populated histogram.
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:rtype: bool
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%End
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virtual QString metadata() = 0;
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%Docstring
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Get metadata in a format suitable for feeding directly
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into a subset of the GUI raster properties "Metadata" tab.
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:rtype: str
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%End
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virtual QgsRasterIdentifyResult identify( const QgsPointXY &point, QgsRaster::IdentifyFormat format, const QgsRectangle &boundingBox = QgsRectangle(), int width = 0, int height = 0, int dpi = 96 );
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%Docstring
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:rtype: QgsRasterIdentifyResult
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%End
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virtual QString lastErrorTitle() = 0;
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%Docstring
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Returns the caption error text for the last error in this provider
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If an operation returns 0 (e.g. draw()), this function
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returns the text of the error associated with the failure.
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Interactive users of this provider can then, for example,
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call a QMessageBox to display the contents.
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:rtype: str
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%End
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virtual QString lastError() = 0;
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%Docstring
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Returns the verbose error text for the last error in this provider
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If an operation returns 0 (e.g. draw()), this function
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returns the text of the error associated with the failure.
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Interactive users of this provider can then, for example,
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call a QMessageBox to display the contents.
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:rtype: str
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%End
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virtual QString lastErrorFormat();
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%Docstring
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Returns the format of the error text for the last error in this provider
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:rtype: str
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%End
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int dpi() const;
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%Docstring
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Returns the dpi of the output device.
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:rtype: int
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%End
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void setDpi( int dpi );
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%Docstring
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Sets the output device resolution.
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%End
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virtual QDateTime timestamp() const;
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%Docstring
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Time stamp of data source in the moment when data/metadata were loaded by provider
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:rtype: QDateTime
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%End
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virtual QDateTime dataTimestamp() const;
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%Docstring
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Current time stamp of data source
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:rtype: QDateTime
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%End
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virtual bool isEditable() const;
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%Docstring
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Checks whether the provider is in editing mode, i.e. raster write operations will be accepted.
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By default providers are not editable. Use setEditable() method to enable/disable editing.
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.. seealso:: setEditable(), writeBlock()
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.. versionadded:: 3.0
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:rtype: bool
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%End
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virtual bool setEditable( bool enabled );
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%Docstring
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Turns on/off editing mode of the provider. When in editing mode, it is possible
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to overwrite data of the provider using writeBlock() calls.
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.. note::
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Only some providers support editing mode and even those may fail to turn
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the underlying data source into editing mode, so it is necessary to check the return
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value whether the operation was successful.
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:return: true if the switch to/from editing mode was successful
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.. seealso:: isEditable(), writeBlock()
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.. versionadded:: 3.0
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:rtype: bool
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%End
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virtual bool write( void *data, int band, int width, int height, int xOffset, int yOffset );
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%Docstring
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:rtype: bool
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%End
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bool writeBlock( QgsRasterBlock *block, int band, int xOffset = 0, int yOffset = 0 );
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%Docstring
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Writes pixel data from a raster block into the provider data source.
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This will override previously stored pixel values. It is assumed that cells in the passed
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raster block are aligned with the cells of the data source. If raster block does not cover
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the whole area of the data source, only a subset of pixels covered by the raster block
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will be overwritten. By default, writing of raster data starts from the first cell
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of the raster - it is possible to set offset in pixels by specifying non-zero
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xOffset and yOffset values.
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Writing is supported only by some data providers. Provider has to be in editing mode
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in order to allow write operations.
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.. seealso:: isEditable(), setEditable()
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:return: true on success
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.. versionadded:: 3.0
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:rtype: bool
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%End
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static QgsRasterDataProvider *create( const QString &providerKey,
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const QString &uri,
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const QString &format, int nBands,
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Qgis::DataType type,
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int width, int height, double *geoTransform,
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const QgsCoordinateReferenceSystem &crs,
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const QStringList &createOptions = QStringList() );
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%Docstring
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Creates a new dataset with mDataSourceURI
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:rtype: QgsRasterDataProvider
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%End
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virtual bool setNoDataValue( int bandNo, double noDataValue );
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%Docstring
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Set no data value on created dataset
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\param bandNo band number
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\param noDataValue no data value
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:rtype: bool
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%End
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virtual bool remove();
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%Docstring
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Remove dataset
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:rtype: bool
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%End
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static QList<QPair<QString, QString> > pyramidResamplingMethods( const QString &providerKey );
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%Docstring
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Returns a list of pyramid resampling method name and label pairs
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for given provider
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:rtype: list of QPair<str, QString>
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%End
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virtual QString validateCreationOptions( const QStringList &createOptions, const QString &format );
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%Docstring
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Validates creation options for a specific dataset and destination format.
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.. note::
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used by GDAL provider only
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.. note::
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see also validateCreationOptionsFormat() in gdal provider for validating options based on format only
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:rtype: str
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%End
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virtual QString validatePyramidsConfigOptions( QgsRaster::RasterPyramidsFormat pyramidsFormat,
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const QStringList &configOptions, const QString &fileFormat );
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%Docstring
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Validates pyramid creation options for a specific dataset and destination format
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.. note::
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used by GDAL provider only
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:rtype: str
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%End
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static QString identifyFormatName( QgsRaster::IdentifyFormat format );
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%Docstring
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:rtype: str
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%End
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static QgsRaster::IdentifyFormat identifyFormatFromName( const QString &formatName );
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%Docstring
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:rtype: QgsRaster.IdentifyFormat
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%End
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static QString identifyFormatLabel( QgsRaster::IdentifyFormat format );
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%Docstring
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:rtype: str
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%End
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static Capability identifyFormatToCapability( QgsRaster::IdentifyFormat format );
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%Docstring
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:rtype: Capability
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%End
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virtual int stepWidth() const;
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%Docstring
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Step width for raster iterations.
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.. seealso:: stepHeight()
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.. versionadded:: 3.0
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:rtype: int
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%End
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virtual int stepHeight() const;
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%Docstring
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Step height for raster iterations.
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.. seealso:: stepWidth()
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.. versionadded:: 3.0
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:rtype: int
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%End
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signals:
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void statusChanged( const QString & ) const;
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%Docstring
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Emit a message to be displayed on status bar, usually used by network providers (WMS,WCS)
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.. versionadded:: 2.14
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%End
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protected:
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bool userNoDataValuesContains( int bandNo, double value ) const;
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%Docstring
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Returns true if user no data contains value
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:rtype: bool
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%End
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void copyBaseSettings( const QgsRasterDataProvider &other );
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%Docstring
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Copy member variables from other raster data provider. Useful for implementation of clone() method in subclasses
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%End
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static QString makeTableCell( const QString &value );
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%Docstring
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:rtype: str
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%End
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static QString makeTableCells( const QStringList &values );
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%Docstring
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:rtype: str
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%End
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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/qgsrasterdataprovider.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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