Class: QgsRasterBlockFeedback¶
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class
qgis.core.
QgsRasterBlockFeedback
(parent: QObject = None)¶ Bases:
qgis._core.QgsFeedback
Construct a new raster block feedback object
Feedback object tailored for raster block reading.
New in version 3.0: Enums
Methods
Appends an error message to the stored list of errors.
Returns a list of any errors encountered while retrieving the raster block.
Whether the raster provider should return only data that are already available without waiting for full result.
May be emitted by raster data provider to indicate that some partial data are available and a new preview image may be produced
Whether our painter is drawing to a temporary image used just by this layer
set flag whether the block request is for preview purposes only
Set whether our painter is drawing to a temporary image used just by this layer
Signals
Attributes
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appendError
(self, error: str)¶ Appends an error message to the stored list of errors. Should be called whenever an error is encountered while retrieving a raster block.
See also
New in version 3.8.0.
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childEvent
()¶
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connectNotify
()¶
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customEvent
()¶
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disconnectNotify
()¶
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errors
(self) → List[str]¶ Returns a list of any errors encountered while retrieving the raster block.
See also
New in version 3.8.0.
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isPreviewOnly
(self) → bool¶ Whether the raster provider should return only data that are already available without waiting for full result. By default this flag is not enabled.
See also
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isSignalConnected
()¶
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onNewData
(self)¶ May be emitted by raster data provider to indicate that some partial data are available and a new preview image may be produced
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receivers
()¶
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renderPartialOutput
(self) → bool¶ Whether our painter is drawing to a temporary image used just by this layer
See also
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sender
()¶
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senderSignalIndex
()¶
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setPreviewOnly
(self, preview: bool)¶ set flag whether the block request is for preview purposes only
See also
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setRenderPartialOutput
(self, enable: bool)¶ Set whether our painter is drawing to a temporary image used just by this layer
See also
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timerEvent
()¶
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