Class: QgsRasterBlockFeedback¶
-
class
qgis.core.
QgsRasterBlockFeedback
(parent: QObject = None)¶ Bases:
QgsFeedback
Construct a new raster block feedback object
Feedback object tailored for raster block reading.
New in version 3.0.
- Parameters
parent –
-
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.
- Parameters
error (str) –
-
childEvent
(self, QChildEvent)¶
-
connectNotify
(self, QMetaMethod)¶
-
customEvent
(self, QEvent)¶
-
disconnectNotify
(self, QMetaMethod)¶
-
errors
(self) → List[str]¶ Returns a list of any errors encountered while retrieving the raster block.
See also
New in version 3.8.0.
- Return type
List[str]
-
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
- Return type
bool
-
isSignalConnected
(self, QMetaMethod) → bool¶
-
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
-
receivers
(self, PYQT_SIGNAL) → int¶
-
renderPartialOutput
(self) → bool¶ Whether our painter is drawing to a temporary image used just by this layer
See also
- Return type
bool
-
sender
(self) → QObject¶
-
senderSignalIndex
(self) → int¶
-
setPreviewOnly
(self, preview: bool)¶ set flag whether the block request is for preview purposes only
See also
- Parameters
preview (bool) –
-
setRenderPartialOutput
(self, enable: bool)¶ Set whether our painter is drawing to a temporary image used just by this layer
See also
- Parameters
enable (bool) –
-
timerEvent
(self, QTimerEvent)¶