Renderer for multiband images with the color components. More...

#include <qgsmultibandcolorrenderer.h>

Inheritance diagram for QgsMultiBandColorRenderer:

Collaboration diagram for QgsMultiBandColorRenderer:

Public Member Functions
	QgsMultiBandColorRenderer (QgsRasterInterface input, int redBand, int greenBand, int blueBand, QgsContrastEnhancement redEnhancement=0, QgsContrastEnhancement greenEnhancement=0, QgsContrastEnhancement blueEnhancement=0)
	~QgsMultiBandColorRenderer ()
QgsRasterInterface *	clone () const
	Clone itself, create deep copy.
QgsRasterBlock *	block (int bandNo, QgsRectangle const &extent, int width, int height)
	Read block of data using given extent and size.
int	redBand () const
void	setRedBand (int band)
int	greenBand () const
void	setGreenBand (int band)
int	blueBand () const
void	setBlueBand (int band)
const QgsContrastEnhancement *	redContrastEnhancement () const
void	setRedContrastEnhancement (QgsContrastEnhancement *ce)
	Takes ownership.
const QgsContrastEnhancement *	greenContrastEnhancement () const
void	setGreenContrastEnhancement (QgsContrastEnhancement *ce)
	Takes ownership.
const QgsContrastEnhancement *	blueContrastEnhancement () const
void	setBlueContrastEnhancement (QgsContrastEnhancement *ce)
	Takes ownership.
void	writeXML (QDomDocument &doc, QDomElement &parentElem) const
	Write base class members to xml.
QList< int >	usesBands () const
	Returns a list of band numbers used by the renderer.
Public Member Functions inherited from QgsRasterRenderer
	QgsRasterRenderer (QgsRasterInterface *input=0, const QString &type="")
virtual	~QgsRasterRenderer ()
virtual int	bandCount () const
	Get number of bands.
virtual QGis::DataType	dataType (int bandNo) const
	Returns data type for the band specified by number.
virtual QString	type () const
virtual bool	setInput (QgsRasterInterface *input)
	Set input.
bool	usesTransparency () const
void	setOpacity (double opacity)
double	opacity () const
void	setRasterTransparency (QgsRasterTransparency *t)
const QgsRasterTransparency *	rasterTransparency () const
void	setAlphaBand (int band)
int	alphaBand () const
virtual void	legendSymbologyItems (QList< QPair< QString, QColor > > &symbolItems) const
	Get symbology items if provided by renderer.
void	readXML (const QDomElement &rendererElem)
	Sets base class members from xml.
Public Member Functions inherited from QgsRasterInterface
	QgsRasterInterface (QgsRasterInterface *input=0)
virtual	~QgsRasterInterface ()
virtual int	capabilities () const
	Returns a bitmask containing the supported capabilities.
QString	capabilitiesString () const
	Returns the above in friendly format.
virtual QGis::DataType	srcDataType (int bandNo) const
	Returns source data type for the band specified by number, source data type may be shorter than dataType.
virtual QgsRectangle	extent ()
	Get the extent of the interface.
int	dataTypeSize (int bandNo)
virtual int	xBlockSize () const
	Get block size.
virtual int	yBlockSize () const
virtual int	xSize () const
	Get raster size.
virtual int	ySize () const
virtual QString	generateBandName (int theBandNumber) const
	helper function to create zero padded band names
virtual QgsRasterInterface *	input () const
	Current input.
virtual bool	on () const
	Is on/off.
virtual void	setOn (bool on)
	Set on/off.
virtual const QgsRasterInterface *	srcInput () const
	Get source / raw input, the first in pipe, usually provider.
virtual QgsRasterInterface *	srcInput ()
virtual QgsRasterBandStats	bandStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Get band statistics.
virtual bool	hasStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Returns true if histogram is available (cached, already calculated).
virtual QgsRasterHistogram	histogram (int theBandNo, int theBinCount=0, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Get histogram.
virtual bool	hasHistogram (int theBandNo, int theBinCount, double theMinimum=std::numeric_limits< double >::quiet_NaN(), double theMaximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0, bool theIncludeOutOfRange=false)
	Returns true if histogram is available (cached, already calculated), the parameters are the same as in histogram()
virtual void	cumulativeCut (int theBandNo, double theLowerCount, double theUpperCount, double &theLowerValue, double &theUpperValue, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
	Find values for cumulative pixel count cut.

Static Public Member Functions
static QgsRasterRenderer *	create (const QDomElement &elem, QgsRasterInterface *input)
Static Public Member Functions inherited from QgsRasterRenderer
static QString	minMaxOriginName (int theOrigin)
static QString	minMaxOriginLabel (int theOrigin)
static int	minMaxOriginFromName (QString theName)

Private Attributes
int	mRedBand
int	mGreenBand
int	mBlueBand
QgsContrastEnhancement *	mRedContrastEnhancement
QgsContrastEnhancement *	mGreenContrastEnhancement
QgsContrastEnhancement *	mBlueContrastEnhancement

Additional Inherited Members
Public Types inherited from QgsRasterRenderer
enum	MinMaxOrigin { MinMaxUnknown = 0, MinMaxUser = 1, MinMaxMinMax = 1 << 1, MinMaxCumulativeCut = 1 << 2, MinMaxStdDev = 1 << 3, MinMaxFullExtent = 1 << 4, MinMaxSubExtent = 1 << 5, MinMaxEstimated = 1 << 6, MinMaxExact = 1 << 7 }
Static Public Attributes inherited from QgsRasterRenderer
static const QRgb	NODATA_COLOR = qRgba( 0, 0, 0, 0 )
Protected Member Functions inherited from QgsRasterRenderer
void	_writeXML (QDomDocument &doc, QDomElement &rasterRendererElem) const
	Write upper class info into rasterrenderer element (called by writeXML method of subclasses)
Protected Attributes inherited from QgsRasterRenderer
QString	mType
double	mOpacity
	Global alpha value (0-1)
QgsRasterTransparency *	mRasterTransparency
	Raster transparency per color or value.
int	mAlphaBand
	Read alpha value from band.

Detailed Description

Renderer for multiband images with the color components.

Definition at line 29 of file qgsmultibandcolorrenderer.h.

Constructor & Destructor Documentation

QgsMultiBandColorRenderer::QgsMultiBandColorRenderer	(	QgsRasterInterface *	input,
		int	redBand,
		int	greenBand,
		int	blueBand,
		QgsContrastEnhancement *	redEnhancement = `0`,
		QgsContrastEnhancement *	greenEnhancement = `0`,
		QgsContrastEnhancement *	blueEnhancement = `0`
	)