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QgsSingleBandColorDataRenderer Class Reference

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

#include <qgssinglebandcolordatarenderer.h>

Inheritance diagram for QgsSingleBandColorDataRenderer:
Inheritance graph
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Public Member Functions

 QgsSingleBandColorDataRenderer (QgsRasterInterface *input, int band)
 
 ~QgsSingleBandColorDataRenderer ()
 
QgsRasterBlockblock (int bandNo, const QgsRectangle &extent, int width, int height)
 Read block of data using given extent and size. More...
 
QgsRasterInterfaceclone () const
 Clone itself, create deep copy. More...
 
bool setInput (QgsRasterInterface *input)
 Set input. More...
 
QList< int > usesBands () const
 Returns a list of band numbers used by the renderer. More...
 
void writeXML (QDomDocument &doc, QDomElement &parentElem) const
 Write base class members to xml. More...
 
- Public Member Functions inherited from QgsRasterRenderer
 QgsRasterRenderer (QgsRasterInterface *input=0, const QString &type="")
 
virtual ~QgsRasterRenderer ()
 
int alphaBand () const
 
virtual int bandCount () const
 Get number of bands. More...
 
virtual QGis::DataType dataType (int bandNo) const
 Returns data type for the band specified by number. More...
 
virtual void legendSymbologyItems (QList< QPair< QString, QColor > > &symbolItems) const
 Get symbology items if provided by renderer. More...
 
double opacity () const
 
const QgsRasterTransparencyrasterTransparency () const
 
void readXML (const QDomElement &rendererElem)
 Sets base class members from xml. More...
 
void setAlphaBand (int band)
 
void setOpacity (double opacity)
 
void setRasterTransparency (QgsRasterTransparency *t)
 
virtual QString type () const
 
bool usesTransparency () const
 
- Public Member Functions inherited from QgsRasterInterface
 QgsRasterInterface (QgsRasterInterface *input=0)
 
virtual ~QgsRasterInterface ()
 
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 ()
 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 srcDataType (int bandNo) const
 Returns source data type for the band specified by number, source data type may be shorter than dataType. More...
 
virtual const QgsRasterInterfacesrcInput () const
 Get source / raw input, the first in pipe, usually provider. More...
 
virtual QgsRasterInterfacesrcInput ()
 
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)
 
- Static Public Member Functions inherited from QgsRasterRenderer
static int minMaxOriginFromName (QString theName)
 
static QString minMaxOriginLabel (int theOrigin)
 
static QString minMaxOriginName (int theOrigin)
 

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
}
 
- 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...
 
double mOpacity
 Global alpha value (0-1) More...
 
QgsRasterTransparencymRasterTransparency
 Raster transparency per color or 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 color.

Definition at line 28 of file qgssinglebandcolordatarenderer.h.

Constructor & Destructor Documentation

QgsSingleBandColorDataRenderer::QgsSingleBandColorDataRenderer ( QgsRasterInterface input,
int  band 
)

Definition at line 25 of file qgssinglebandcolordatarenderer.cpp.

QgsSingleBandColorDataRenderer::~QgsSingleBandColorDataRenderer ( )

Definition at line 31 of file qgssinglebandcolordatarenderer.cpp.

Member Function Documentation

QgsRasterBlock * QgsSingleBandColorDataRenderer::block ( int  bandNo,
const QgsRectangle extent,
int  width,
int  height 
)
virtual

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

Implements QgsRasterRenderer.

Definition at line 57 of file qgssinglebandcolordatarenderer.cpp.

QgsRasterInterface * QgsSingleBandColorDataRenderer::clone ( ) const
virtual

Clone itself, create deep copy.

Implements QgsRasterRenderer.

Definition at line 35 of file qgssinglebandcolordatarenderer.cpp.

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

Definition at line 44 of file qgssinglebandcolordatarenderer.cpp.

bool QgsSingleBandColorDataRenderer::setInput ( QgsRasterInterface input)
virtual

Set input.

Returns true if set correctly, false if cannot use that input

Reimplemented from QgsRasterRenderer.

Definition at line 124 of file qgssinglebandcolordatarenderer.cpp.

QList< int > QgsSingleBandColorDataRenderer::usesBands ( ) const
virtual

Returns a list of band numbers used by the renderer.

Reimplemented from QgsRasterRenderer.

Definition at line 114 of file qgssinglebandcolordatarenderer.cpp.

void QgsSingleBandColorDataRenderer::writeXML ( QDomDocument &  doc,
QDomElement &  parentElem 
) const
virtual

Write base class members to xml.

Reimplemented from QgsRasterInterface.

Definition at line 103 of file qgssinglebandcolordatarenderer.cpp.


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