The drawing pipe for raster layers. More...

Public Member Functions
	QgsRasterDrawer (QgsRasterIterator *iterator, double dpiTarget=-1.0)
	The QgsRasterDrawer constructor. More...

void	draw (QPainter p, QgsRasterViewPort viewPort, const QgsMapToPixel qgsMapToPixel, QgsRasterBlockFeedback feedback=nullptr)
	Draws raster data. More...

Protected Member Functions
void	drawImage (QPainter p, QgsRasterViewPort viewPort, const QImage &img, int topLeftCol, int topLeftRow, const QgsMapToPixel *mapToPixel=nullptr) const
	Draws raster part. More...

Detailed Description

The drawing pipe for raster layers.

Definition at line 37 of file qgsrasterdrawer.h.

Constructor & Destructor Documentation

QgsRasterDrawer::QgsRasterDrawer	(	QgsRasterIterator *	iterator,
		double	dpiTarget = `-1.0`
	)

The QgsRasterDrawer constructor.

Parameters

iterator	the raster iterator to fetch data from
dpiTarget	the target dpi (dots per inch) to be taken into consideration when rendering

Definition at line 32 of file qgsrasterdrawer.cpp.

Draws raster data.

Parameters

p	destination QPainter
viewPort	viewport to render
qgsMapToPixel	map to pixel converter
feedback	optional raster feedback object for cancellation/preview. Added in QGIS 3.0.

Definition at line 38 of file qgsrasterdrawer.cpp.

void QgsRasterDrawer::drawImage	(	QPainter *	p,
		QgsRasterViewPort *	viewPort,
		const QImage &	img,
		int	topLeftCol,
		int	topLeftRow,
		const QgsMapToPixel *	mapToPixel = `nullptr`
	)		const

protected

Draws raster part.

Parameters

p	the painter to draw to
viewPort	view port to draw to
img	image to draw
topLeftCol	Left position relative to left border of viewport
topLeftRow	Top position relative to top border of viewport
mapToPixel	map to device coordinate transformation info

Definition at line 120 of file qgsrasterdrawer.cpp.

The documentation for this class was generated from the following files: