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QgsSingleBandColorDataRenderer Class Reference

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

#include <qgssinglebandcolordatarenderer.h>

Inheritance diagram for QgsSingleBandColorDataRenderer:
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Collaboration diagram for QgsSingleBandColorDataRenderer:
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Public Member Functions

 QgsSingleBandColorDataRenderer (QgsRasterInterface *input, int band)
 
 ~QgsSingleBandColorDataRenderer ()
 
QgsRasterInterfaceclone () const
 Clone itself, create deep copy. More...
 
bool setInput (QgsRasterInterface *input)
 Set input. More...
 
QgsRasterBlockblock (int bandNo, const QgsRectangle &extent, int width, int height)
 Read block of data using given extent and size. More...
 
void writeXML (QDomDocument &doc, QDomElement &parentElem) const
 Write base class members to xml. More...
 
QList< int > usesBands () const
 Returns a list of band numbers used by the renderer. More...
 
- Public Member Functions inherited from QgsRasterRenderer
 QgsRasterRenderer (QgsRasterInterface *input=0, const QString &type="")
 
virtual ~QgsRasterRenderer ()
 
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 QString type () const
 
bool usesTransparency () const
 
void setOpacity (double opacity)
 
double opacity () const
 
void setRasterTransparency (QgsRasterTransparency *t)
 
const QgsRasterTransparencyrasterTransparency () const
 
void setAlphaBand (int band)
 
int alphaBand () const
 
virtual void legendSymbologyItems (QList< QPair< QString, QColor > > &symbolItems) const
 Get symbology items if provided by renderer. More...
 
void readXML (const QDomElement &rendererElem)
 Sets base class members from xml. More...
 
- Public Member Functions inherited from QgsRasterInterface
 QgsRasterInterface (QgsRasterInterface *input=0)
 
virtual ~QgsRasterInterface ()
 
virtual int capabilities () const
 Returns a bitmask containing the supported capabilities. More...
 
QString capabilitiesString () const
 Returns the above in friendly format. 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 QgsRectangle extent ()
 Get the extent of the interface. More...
 
int dataTypeSize (int bandNo)
 
virtual int xBlockSize () const
 Get block size. More...
 
virtual int yBlockSize () const
 
virtual int xSize () const
 Get raster size. More...
 
virtual int ySize () const
 
virtual QString generateBandName (int theBandNumber) const
 helper function to create zero padded band names 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 const QgsRasterInterfacesrcInput () const
 Get source / raw input, the first in pipe, usually provider. More...
 
virtual QgsRasterInterfacesrcInput ()
 
virtual QgsRasterBandStats bandStatistics (int theBandNo, int theStats=QgsRasterBandStats::All, const QgsRectangle &theExtent=QgsRectangle(), int theSampleSize=0)
 Get band statistics. 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 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 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...
 

Static Public Member Functions

static QgsRasterRenderercreate (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 mBand
 

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
QString mType
 
double mOpacity
 Global alpha value (0-1) More...
 
QgsRasterTransparencymRasterTransparency
 Raster transparency per color or value. More...
 
int mAlphaBand
 Read alpha value from band. More...
 
- Protected Attributes inherited from QgsRasterInterface
QgsRasterInterfacemInput
 
QList< QgsRasterBandStatsmStatistics
 List of cached statistics, all bands mixed. More...
 
QList< QgsRasterHistogrammHistograms
 List of cached histograms, all bands mixed. More...
 
bool mOn
 

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 24 of file qgssinglebandcolordatarenderer.cpp.

Referenced by clone(), and create().

QgsSingleBandColorDataRenderer::~QgsSingleBandColorDataRenderer ( )

Definition at line 30 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 56 of file qgssinglebandcolordatarenderer.cpp.

References QGis::ARGB32_Premultiplied, QgsRasterInterface::block(), QgsRasterBlock::color(), QgsRasterBlock::convert(), QgsRasterBlock::isEmpty(), mBand, QgsRasterInterface::mInput, QgsRasterRenderer::mOpacity, QgsDebugMsg, QgsRasterBlock::reset(), QgsRasterBlock::setColor(), and QgsRasterRenderer::usesTransparency().

QgsRasterInterface * QgsSingleBandColorDataRenderer::clone ( ) const
virtual
QgsRasterRenderer * QgsSingleBandColorDataRenderer::create ( const QDomElement &  elem,
QgsRasterInterface input 
)
static
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 123 of file qgssinglebandcolordatarenderer.cpp.

References QGis::ARGB32, QGis::ARGB32_Premultiplied, QgsRasterInterface::dataType(), QgsRasterInterface::input(), QgsRasterInterface::mInput, and QgsRasterInterface::mOn.

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

Returns a list of band numbers used by the renderer.

Reimplemented from QgsRasterRenderer.

Definition at line 113 of file qgssinglebandcolordatarenderer.cpp.

References mBand.

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

Write base class members to xml.

Reimplemented from QgsRasterInterface.

Definition at line 102 of file qgssinglebandcolordatarenderer.cpp.

References QgsRasterRenderer::_writeXML(), and mBand.

Member Data Documentation

int QgsSingleBandColorDataRenderer::mBand
private

Definition at line 46 of file qgssinglebandcolordatarenderer.h.

Referenced by block(), clone(), usesBands(), and writeXML().


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