Class: QgsRasterBlockFeedback

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

childEvent

connectNotify

customEvent

disconnectNotify

isPreviewOnly

Whether the raster provider should return only data that are already available without waiting for full result.

isSignalConnected

onNewData

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

Whether our painter is drawing to a temporary image used just by this layer

sender

senderSignalIndex

setPreviewOnly

set flag whether the block request is for preview purposes only

setRenderPartialOutput

Set whether our painter is drawing to a temporary image used just by this layer

timerEvent

Signals

Attributes

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

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

timerEvent()