Subgroup: Raster

Class: QgsRasterBlockFeedback¶

class qgis.core.QgsRasterBlockFeedback¶

Bases: qgis._core.QgsFeedback

Feedback object tailored for raster block reading.

New in version 3.0: Methods

`blockSignals`
`cancel`	Tells the internal routines that the current operation should be canceled.
`childEvent`
`children`
`connectNotify`
`customEvent`
`deleteLater`
`disconnect`
`disconnectNotify`
`dumpObjectInfo`
`dumpObjectTree`
`dynamicPropertyNames`
`event`
`eventFilter`
`findChild`	findChild(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> QObject
`findChildren`	findChildren(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> List[QObject]
`inherits`
`installEventFilter`
`isCanceled`	Tells whether the operation has been canceled already
`isPreviewOnly`	Whether the raster provider should return only data that are already available without waiting for full result.
`isSignalConnected`
`isWidgetType`
`isWindowType`
`killTimer`
`metaObject`
`moveToThread`
`objectName`
`onNewData`	May be emitted by raster data provider to indicate that some partial data are available
`parent`
`progress`	Returns the current progress reported by the feedback object.
`property`
`pyqtConfigure`	Each keyword argument is either the name of a Qt property or a Qt signal.
`receivers`
`removeEventFilter`
`renderPartialOutput`	Whether our painter is drawing to a temporary image used just by this layer
`sender`
`senderSignalIndex`
`setObjectName`
`setParent`
`setPreviewOnly`	set flag whether the block request is for preview purposes only
`setProgress`	Sets the current progress for the feedback object.
`setProperty`
`setRenderPartialOutput`	Set whether our painter is drawing to a temporary image used just by this layer
`signalsBlocked`
`startTimer`
`thread`
`timerEvent`
`tr`

Attributes

`canceled`	Internal routines can connect to this signal if they use event loop [signal]
`destroyed`	destroyed(self, QObject = None) [signal]
`objectNameChanged`	objectNameChanged(self, str) [signal]
`progressChanged`	Emitted when the feedback object reports a progress change.
`staticMetaObject`

childEvent()¶

connectNotify()¶

customEvent()¶

disconnectNotify()¶

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

setPreviewOnly()

isSignalConnected()¶

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()¶

renderPartialOutput(self) → bool¶: Whether our painter is drawing to a temporary image used just by this layer

See also

setRenderPartialOutput()

sender()¶

senderSignalIndex()¶

setPreviewOnly(self, preview: bool)¶: set flag whether the block request is for preview purposes only

See also

isPreviewOnly()

setRenderPartialOutput(self, enable: bool)¶: Set whether our painter is drawing to a temporary image used just by this layer

See also

renderPartialOutput()

timerEvent()¶