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QgsBrightnessContrastFilter Class Reference

Brightness/contrast filter pipe for rasters. More...

#include <qgsbrightnesscontrastfilter.h>

Inheritance diagram for QgsBrightnessContrastFilter:
Inheritance graph
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Public Member Functions

 QgsBrightnessContrastFilter (QgsRasterInterface *input=0)
 
 ~QgsBrightnessContrastFilter ()
 
int bandCount () const
 Get number of bands. More...
 
QgsRasterBlockblock (int bandNo, const QgsRectangle &extent, int width, int height)
 Read block of data using given extent and size. More...
 
int brightness () const
 
QgsRasterInterfaceclone () const
 Clone itself, create deep copy. More...
 
int contrast () const
 
QGis::DataType dataType (int bandNo) const
 Returns data type for the band specified by number. More...
 
void readXML (const QDomElement &filterElem)
 Sets base class members from xml. More...
 
void setBrightness (int brightness)
 
void setContrast (int contrast)
 
bool setInput (QgsRasterInterface *input)
 Set input. More...
 
void writeXML (QDomDocument &doc, QDomElement &parentElem) const
 Write base class members to xml. More...
 
- 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
 

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...
 
- 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 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

Brightness/contrast filter pipe for rasters.

Definition at line 29 of file qgsbrightnesscontrastfilter.h.

Constructor & Destructor Documentation

QgsBrightnessContrastFilter::QgsBrightnessContrastFilter ( QgsRasterInterface input = 0)

Definition at line 25 of file qgsbrightnesscontrastfilter.cpp.

QgsBrightnessContrastFilter::~QgsBrightnessContrastFilter ( )

Definition at line 32 of file qgsbrightnesscontrastfilter.cpp.

Member Function Documentation

int QgsBrightnessContrastFilter::bandCount ( ) const
virtual

Get number of bands.

Implements QgsRasterInterface.

Definition at line 45 of file qgsbrightnesscontrastfilter.cpp.

QgsRasterBlock * QgsBrightnessContrastFilter::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 QgsRasterInterface.

Definition at line 112 of file qgsbrightnesscontrastfilter.cpp.

int QgsBrightnessContrastFilter::brightness ( ) const
inline

Definition at line 46 of file qgsbrightnesscontrastfilter.h.

QgsRasterInterface * QgsBrightnessContrastFilter::clone ( ) const
virtual

Clone itself, create deep copy.

Implements QgsRasterInterface.

Definition at line 36 of file qgsbrightnesscontrastfilter.cpp.

int QgsBrightnessContrastFilter::contrast ( ) const
inline

Definition at line 49 of file qgsbrightnesscontrastfilter.h.

QGis::DataType QgsBrightnessContrastFilter::dataType ( int  bandNo) const
virtual

Returns data type for the band specified by number.

Implements QgsRasterInterface.

Definition at line 60 of file qgsbrightnesscontrastfilter.cpp.

void QgsBrightnessContrastFilter::readXML ( const QDomElement &  filterElem)
virtual

Sets base class members from xml.

Usually called from create() methods of subclasses

Reimplemented from QgsRasterInterface.

Definition at line 213 of file qgsbrightnesscontrastfilter.cpp.

void QgsBrightnessContrastFilter::setBrightness ( int  brightness)
inline

Definition at line 45 of file qgsbrightnesscontrastfilter.h.

void QgsBrightnessContrastFilter::setContrast ( int  contrast)
inline

Definition at line 48 of file qgsbrightnesscontrastfilter.h.

bool QgsBrightnessContrastFilter::setInput ( QgsRasterInterface input)
virtual

Set input.

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

Reimplemented from QgsRasterInterface.

Definition at line 75 of file qgsbrightnesscontrastfilter.cpp.

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

Write base class members to xml.

Reimplemented from QgsRasterInterface.

Definition at line 199 of file qgsbrightnesscontrastfilter.cpp.


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