QGIS API Documentation  2.99.0-Master (0a63d1f)
Public Member Functions | Static Public Member Functions | List of all members
QgsSingleBandPseudoColorRenderer Class Reference

Raster renderer pipe for single band pseudocolor. More...

#include <qgssinglebandpseudocolorrenderer.h>

Inheritance diagram for QgsSingleBandPseudoColorRenderer:
Inheritance graph
[legend]

Public Member Functions

 QgsSingleBandPseudoColorRenderer (QgsRasterInterface *input, int band=-1, QgsRasterShader *shader=nullptr)
 Note: takes ownership of QgsRasterShader. More...
 
 QgsSingleBandPseudoColorRenderer (const QgsSingleBandPseudoColorRenderer &)=delete
 QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead. More...
 
 ~QgsSingleBandPseudoColorRenderer ()
 
int band () const
 Returns the band used by the renderer. More...
 
QgsRasterBlockblock (int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback=nullptr) override
 Read block of data using given extent and size. More...
 
double classificationMax () const
 
double classificationMin () const
 
QgsSingleBandPseudoColorRendererclone () const override
 Clone itself, create deep copy. More...
 
void createShader (QgsColorRamp *colorRamp=nullptr, QgsColorRampShader::Type colorRampType=QgsColorRampShader::Interpolated, QgsColorRampShader::ClassificationMode classificationMode=QgsColorRampShader::Continuous, int classes=0, bool clip=false, const QgsRectangle &extent=QgsRectangle())
 Creates a color ramp shader. More...
 
void legendSymbologyItems (QList< QPair< QString, QColor > > &symbolItems) const override
 Get symbology items if provided by renderer. More...
 
const QgsSingleBandPseudoColorRendereroperator= (const QgsSingleBandPseudoColorRenderer &)=delete
 QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead. More...
 
void setBand (int bandNo)
 Sets the band used by the renderer. More...
 
void setClassificationMax (double max)
 
void setClassificationMin (double min)
 
void setShader (QgsRasterShader *shader)
 Takes ownership of the shader. More...
 
QgsRasterShadershader ()
 Returns the raster shader. More...
 
const QgsRasterShadershader () const
 
QList< int > usesBands () const override
 Returns a list of band numbers used by the renderer. More...
 
void writeXml (QDomDocument &doc, QDomElement &parentElem) const override
 Write base class members to xml. More...
 
- Public Member Functions inherited from QgsRasterRenderer
 QgsRasterRenderer (QgsRasterInterface *input=nullptr, const QString &type="")
 
 QgsRasterRenderer (const QgsRasterRenderer &)=delete
 QgsRasterRenderer cannot be copied. Use clone() instead. More...
 
virtual ~QgsRasterRenderer ()
 
int alphaBand () const
 
virtual int bandCount () const override
 Get number of bands. More...
 
void copyCommonProperties (const QgsRasterRenderer *other, bool copyMinMaxOrigin=true)
 Copies common properties like opacity / transparency data from other renderer. More...
 
virtual Qgis::DataType dataType (int bandNo) const override
 Returns data type for the band specified by number. More...
 
const QgsRasterMinMaxOriginminMaxOrigin () const
 Returns const reference to origin of min/max values. More...
 
double opacity () const
 
const QgsRasterRendereroperator= (const QgsRasterRenderer &)=delete
 QgsRasterRenderer cannot be copied. Use clone() instead. More...
 
const QgsRasterTransparencyrasterTransparency () const
 
void readXml (const QDomElement &rendererElem) override
 Sets base class members from xml. Usually called from create() methods of subclasses. More...
 
void setAlphaBand (int band)
 
virtual bool setInput (QgsRasterInterface *input) override
 Set input. More...
 
void setMinMaxOrigin (const QgsRasterMinMaxOrigin &theOrigin)
 Sets origin of min/max values. More...
 
void setOpacity (double opacity)
 
void setRasterTransparency (QgsRasterTransparency *t)
 
virtual QString type () const
 
bool usesTransparency () const
 
- Public Member Functions inherited from QgsRasterInterface
 QgsRasterInterface (QgsRasterInterface *input=nullptr)
 
virtual ~QgsRasterInterface ()=default
 
virtual QgsRasterBandStats bandStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
 Get band statistics. More...
 
virtual int capabilities () const
 Returns a bitmask containing the supported capabilities. More...
 
QString capabilitiesString () const
 Returns the above in friendly format. More...
 
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. More...
 
int dataTypeSize (int bandNo)
 
virtual QgsRectangle extent () const
 Get the extent of the interface. More...
 
virtual QString generateBandName (int theBandNumber) const
 helper function to create zero padded band names More...
 
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() More...
 
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). More...
 
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. More...
 
virtual QgsRasterInterfaceinput () const
 Current input. More...
 
virtual bool on () const
 Is on/off. More...
 
virtual void setOn (bool on)
 Set on/off. More...
 
virtual Qgis::DataType sourceDataType (int bandNo) const
 Returns source data type for the band specified by number, source data type may be shorter than dataType. More...
 
virtual const QgsRasterInterfacesourceInput () const
 Get source / raw input, the first in pipe, usually provider. More...
 
virtual QgsRasterInterfacesourceInput ()
 Get source / raw input, the first in pipe, usually provider. More...
 
virtual int xBlockSize () const
 Get block size. More...
 
virtual int xSize () const
 Get raster size. More...
 
virtual int yBlockSize () const
 
virtual int ySize () const
 

Static Public Member Functions

static QgsRasterRenderercreate (const QDomElement &elem, QgsRasterInterface *input)
 

Additional Inherited Members

- Public Types inherited from QgsRasterInterface
enum  Capability {
  NoCapabilities = 0, Size = 1 << 1, Create = 1 << 2, Remove = 1 << 3,
  BuildPyramids = 1 << 4, Identify = 1 << 5, IdentifyValue = 1 << 6, IdentifyText = 1 << 7,
  IdentifyHtml = 1 << 8, IdentifyFeature = 1 << 9
}
 If you add to this, please also add to capabilitiesString() More...
 
- 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) More...
 
- Protected Member Functions inherited from QgsRasterInterface
void initHistogram (QgsRasterHistogram &theHistogram, 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)
 Fill in histogram defaults if not specified. More...
 
void initStatistics (QgsRasterBandStats &theStatistics, int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theBinCount=0)
 Fill in statistics defaults if not specified. More...
 
- Protected Attributes inherited from QgsRasterRenderer
int mAlphaBand
 Read alpha value from band. More...
 
QgsRasterMinMaxOrigin mMinMaxOrigin
 Origin of min/max values. More...
 
double mOpacity
 Global alpha value (0-1) More...
 
QgsRasterTransparencymRasterTransparency
 Raster transparency per color or value. Overwrites global alpha value. More...
 
QString mType
 
- Protected Attributes inherited from QgsRasterInterface
QList< QgsRasterHistogrammHistograms
 List of cached histograms, all bands mixed. More...
 
QgsRasterInterfacemInput
 
bool mOn
 
QList< QgsRasterBandStatsmStatistics
 List of cached statistics, all bands mixed. More...
 

Detailed Description

Raster renderer pipe for single band pseudocolor.

Definition at line 33 of file qgssinglebandpseudocolorrenderer.h.

Constructor & Destructor Documentation

◆ QgsSingleBandPseudoColorRenderer() [1/2]

QgsSingleBandPseudoColorRenderer::QgsSingleBandPseudoColorRenderer ( QgsRasterInterface input,
int  band = -1,
QgsRasterShader shader = nullptr 
)

Note: takes ownership of QgsRasterShader.

Definition at line 29 of file qgssinglebandpseudocolorrenderer.cpp.

◆ ~QgsSingleBandPseudoColorRenderer()

QgsSingleBandPseudoColorRenderer::~QgsSingleBandPseudoColorRenderer ( )

Definition at line 38 of file qgssinglebandpseudocolorrenderer.cpp.

◆ QgsSingleBandPseudoColorRenderer() [2/2]

QgsSingleBandPseudoColorRenderer::QgsSingleBandPseudoColorRenderer ( const QgsSingleBandPseudoColorRenderer )
delete

QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead.

Member Function Documentation

◆ band()

int QgsSingleBandPseudoColorRenderer::band ( ) const
inline

Returns the band used by the renderer.

Note
added in QGIS 2.7

Definition at line 81 of file qgssinglebandpseudocolorrenderer.h.

◆ block()

QgsRasterBlock * QgsSingleBandPseudoColorRenderer::block ( int  bandNo,
const QgsRectangle extent,
int  width,
int  height,
QgsRasterBlockFeedback feedback = nullptr 
)
overridevirtual

Read block of data using given extent and size.

Returns pointer to data. Caller is responsible to free the memory returned.

Parameters
bandNoband number
extentextent of block
widthpixel width of block
heightpixel height of block
feedbackoptional raster feedback object for cancellation/preview. Added in QGIS 3.0.

Implements QgsRasterRenderer.

Definition at line 202 of file qgssinglebandpseudocolorrenderer.cpp.

◆ classificationMax()

double QgsSingleBandPseudoColorRenderer::classificationMax ( ) const
inline

Definition at line 90 of file qgssinglebandpseudocolorrenderer.h.

◆ classificationMin()

double QgsSingleBandPseudoColorRenderer::classificationMin ( ) const
inline

Definition at line 89 of file qgssinglebandpseudocolorrenderer.h.

◆ clone()

QgsSingleBandPseudoColorRenderer * QgsSingleBandPseudoColorRenderer::clone ( ) const
overridevirtual

Clone itself, create deep copy.

Implements QgsRasterRenderer.

Definition at line 78 of file qgssinglebandpseudocolorrenderer.cpp.

◆ create()

QgsRasterRenderer * QgsSingleBandPseudoColorRenderer::create ( const QDomElement &  elem,
QgsRasterInterface input 
)
static

Definition at line 132 of file qgssinglebandpseudocolorrenderer.cpp.

◆ createShader()

void QgsSingleBandPseudoColorRenderer::createShader ( QgsColorRamp colorRamp = nullptr,
QgsColorRampShader::Type  colorRampType = QgsColorRampShader::Interpolated,
QgsColorRampShader::ClassificationMode  classificationMode = QgsColorRampShader::Continuous,
int  classes = 0,
bool  clip = false,
const QgsRectangle extent = QgsRectangle() 
)

Creates a color ramp shader.

Parameters
colorRampvector color ramp
colorRampTypetype of color ramp shader
classificationModeclassification mode
classesnumber of classes
clipclip out of range values
extentextent used in classification (only used in quantile mode)

Definition at line 116 of file qgssinglebandpseudocolorrenderer.cpp.

◆ legendSymbologyItems()

void QgsSingleBandPseudoColorRenderer::legendSymbologyItems ( QList< QPair< QString, QColor > > &  symbolItems) const
overridevirtual

Get symbology items if provided by renderer.

Reimplemented from QgsRasterRenderer.

Definition at line 322 of file qgssinglebandpseudocolorrenderer.cpp.

◆ operator=()

const QgsSingleBandPseudoColorRenderer& QgsSingleBandPseudoColorRenderer::operator= ( const QgsSingleBandPseudoColorRenderer )
delete

QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead.

◆ setBand()

void QgsSingleBandPseudoColorRenderer::setBand ( int  bandNo)

Sets the band used by the renderer.

See also
band
Note
added in QGIS 2.10

Definition at line 43 of file qgssinglebandpseudocolorrenderer.cpp.

◆ setClassificationMax()

void QgsSingleBandPseudoColorRenderer::setClassificationMax ( double  max)

Definition at line 65 of file qgssinglebandpseudocolorrenderer.cpp.

◆ setClassificationMin()

void QgsSingleBandPseudoColorRenderer::setClassificationMin ( double  min)

Definition at line 52 of file qgssinglebandpseudocolorrenderer.cpp.

◆ setShader()

void QgsSingleBandPseudoColorRenderer::setShader ( QgsRasterShader shader)

Takes ownership of the shader.

Definition at line 110 of file qgssinglebandpseudocolorrenderer.cpp.

◆ shader() [1/2]

QgsRasterShader* QgsSingleBandPseudoColorRenderer::shader ( )
inline

Returns the raster shader.

Definition at line 57 of file qgssinglebandpseudocolorrenderer.h.

◆ shader() [2/2]

const QgsRasterShader* QgsSingleBandPseudoColorRenderer::shader ( ) const
inline
Note
available in python as constShader

Definition at line 60 of file qgssinglebandpseudocolorrenderer.h.

◆ usesBands()

QList< int > QgsSingleBandPseudoColorRenderer::usesBands ( ) const
overridevirtual

Returns a list of band numbers used by the renderer.

Reimplemented from QgsRasterRenderer.

Definition at line 334 of file qgssinglebandpseudocolorrenderer.cpp.

◆ writeXml()

void QgsSingleBandPseudoColorRenderer::writeXml ( QDomDocument &  doc,
QDomElement &  parentElem 
) const
overridevirtual

Write base class members to xml.

Reimplemented from QgsRasterInterface.

Definition at line 302 of file qgssinglebandpseudocolorrenderer.cpp.


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