Class: QgsRasterDrawer¶
- class qgis.core.QgsRasterDrawer¶
Bases:
sip.wrapper
The drawing pipe for raster layers.
QgsRasterDrawer(iterator:
QgsRasterIterator
, dpiTarget: float) TheQgsRasterDrawer
constructor.- Parameters:
iterator – the raster iterator to fetch data from
dpiTarget – the target dpi (dots per inch) to be taken into consideration when rendering
Deprecated since version QGIS: 3.28. Use the constructor without the
dpiTarget
argument instead, as DPI is now handled by thedraw()
method which accepts aQgsRenderContext
.QgsRasterDrawer(iterator:
QgsRasterIterator
) TheQgsRasterDrawer
constructor.- Parameters:
iterator – the raster iterator to fetch data from
QgsRasterDrawer(
QgsRasterDrawer
)- draw(self, p: QPainter, viewPort: QgsRasterViewPort, qgsMapToPixel: QgsMapToPixel, feedback: QgsRasterBlockFeedback = None)¶
Draws raster data.
- Parameters:
p (QPainter) – destination QPainter
viewPort (QgsRasterViewPort) – viewport to render
qgsMapToPixel (QgsMapToPixel) – map to pixel converter
feedback (
QgsRasterBlockFeedback
= None) – optional raster feedback object for cancellation/preview. Added in QGIS 3.0.
draw(self, context:
QgsRenderContext
, viewPort:QgsRasterViewPort
, feedback:QgsRasterBlockFeedback
= None) Draws raster data.- Parameters:
context – the render context
viewPort – viewport to render
feedback – optional raster feedback object for cancellation/preview.
New in version 3.28.