QGIS API Documentation 3.39.0-Master (bca3cdb6021)
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Raster renderer pipe for single band pseudocolor. More...
#include <qgssinglebandpseudocolorrenderer.h>
Public Member Functions | |
QgsSingleBandPseudoColorRenderer (const QgsSingleBandPseudoColorRenderer &)=delete | |
QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead. | |
QgsSingleBandPseudoColorRenderer (QgsRasterInterface *input, int band=-1, QgsRasterShader *shader=nullptr) | |
Note: takes ownership of QgsRasterShader. | |
bool | accept (QgsStyleEntityVisitorInterface *visitor) const override |
Accepts the specified symbology visitor, causing it to visit all symbols associated with the renderer. | |
Q_DECL_DEPRECATED int | band () const |
Returns the band used by the renderer. | |
QgsRasterBlock * | block (int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback=nullptr) override |
Read block of data using given extent and size. | |
bool | canCreateRasterAttributeTable () const override |
Returns true if the renderer is suitable for attribute table creation. | |
double | classificationMax () const |
double | classificationMin () const |
QgsSingleBandPseudoColorRenderer * | clone () const override |
Clone itself, create deep copy. | |
QList< QgsLayerTreeModelLegendNode * > | createLegendNodes (QgsLayerTreeLayer *nodeLayer) override |
Creates a set of legend nodes representing the renderer. | |
void | createShader (QgsColorRamp *colorRamp=nullptr, Qgis::ShaderInterpolationMethod colorRampType=Qgis::ShaderInterpolationMethod::Linear, Qgis::ShaderClassificationMethod classificationMode=Qgis::ShaderClassificationMethod::Continuous, int classes=0, bool clip=false, const QgsRectangle &extent=QgsRectangle()) |
Creates a color ramp shader. | |
Qgis::RasterRendererFlags | flags () const override |
Returns flags which dictate renderer behavior. | |
int | inputBand () const override |
Returns the input band for the renderer, or -1 if no input band is available. | |
QList< QPair< QString, QColor > > | legendSymbologyItems () const override |
Returns symbology items if provided by renderer. | |
const QgsSingleBandPseudoColorRenderer & | operator= (const QgsSingleBandPseudoColorRenderer &)=delete |
QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead. | |
Q_DECL_DEPRECATED void | setBand (int bandNo) |
Sets the band used by the renderer. | |
void | setClassificationMax (double max) |
void | setClassificationMin (double min) |
bool | setInputBand (int band) override |
Attempts to set the input band for the renderer. | |
void | setShader (QgsRasterShader *shader) |
Takes ownership of the shader. | |
QgsRasterShader * | shader () |
Returns the raster shader. | |
const QgsRasterShader * | shader () const |
void | toSld (QDomDocument &doc, QDomElement &element, const QVariantMap &props=QVariantMap()) const override |
Used from subclasses to create SLD Rule elements following SLD v1.0 specs. | |
QList< int > | usesBands () const override |
Returns a list of band numbers used by the renderer. | |
void | writeXml (QDomDocument &doc, QDomElement &parentElem) const override |
Write base class members to xml. | |
Public Member Functions inherited from QgsRasterRenderer | |
QgsRasterRenderer (const QgsRasterRenderer &)=delete | |
QgsRasterRenderer cannot be copied. Use clone() instead. | |
QgsRasterRenderer (QgsRasterInterface *input=nullptr, const QString &type=QString()) | |
Constructor for QgsRasterRenderer. | |
~QgsRasterRenderer () override | |
int | alphaBand () const |
int | bandCount () const override |
Gets number of bands. | |
void | copyCommonProperties (const QgsRasterRenderer *other, bool copyMinMaxOrigin=true) |
Copies common properties like opacity / transparency data from other renderer. | |
Qgis::DataType | dataType (int bandNo) const override |
Returns data type for the band specified by number. | |
const QgsRasterMinMaxOrigin & | minMaxOrigin () const |
Returns const reference to origin of min/max values. | |
QColor | nodataColor () const |
Returns the color to use for shading nodata pixels. | |
double | opacity () const |
Returns the opacity for the renderer, where opacity is a value between 0 (totally transparent) and 1.0 (fully opaque). | |
const QgsRasterRenderer & | operator= (const QgsRasterRenderer &)=delete |
QgsRasterRenderer cannot be copied. Use clone() instead. | |
const QgsRasterTransparency * | rasterTransparency () const |
void | readXml (const QDomElement &rendererElem) override |
Sets base class members from xml. Usually called from create() methods of subclasses. | |
void | setAlphaBand (int band) |
bool | setInput (QgsRasterInterface *input) override |
Set input. | |
void | setMinMaxOrigin (const QgsRasterMinMaxOrigin &origin) |
Sets origin of min/max values. | |
void | setNodataColor (const QColor &color) |
Sets the color to use for shading nodata pixels. | |
void | setOpacity (double opacity) |
Sets the opacity for the renderer, where opacity is a value between 0 (totally transparent) and 1.0 (fully opaque). | |
void | setRasterTransparency (QgsRasterTransparency *t) |
virtual QString | type () const |
Returns a unique string representation of the renderer type. | |
bool | usesTransparency () const |
Public Member Functions inherited from QgsRasterInterface | |
QgsRasterInterface (QgsRasterInterface *input=nullptr) | |
virtual | ~QgsRasterInterface ()=default |
Q_DECL_DEPRECATED QgsRasterBandStats | bandStatistics (int bandNo, int stats, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr) |
Returns the band statistics. | |
virtual QgsRasterBandStats | bandStatistics (int bandNo, Qgis::RasterBandStatistics stats=Qgis::RasterBandStatistic::All, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr) |
Returns the band statistics. | |
virtual Qgis::RasterInterfaceCapabilities | capabilities () const |
Returns the capabilities supported by the interface. | |
Q_DECL_DEPRECATED QString | capabilitiesString () const |
Returns the raster interface capabilities in friendly format. | |
virtual QString | colorInterpretationName (int bandNumber) const |
Returns the name of the color interpretation for the specified bandNumber. | |
virtual void | cumulativeCut (int bandNo, double lowerCount, double upperCount, double &lowerValue, double &upperValue, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0) |
Find values for cumulative pixel count cut. | |
int | dataTypeSize (int bandNo) const |
Returns the size (in bytes) for the data type for the specified band. | |
QString | displayBandName (int bandNumber) const |
Generates a friendly, descriptive name for the specified bandNumber. | |
virtual QgsRectangle | extent () const |
Gets the extent of the interface. | |
virtual QString | generateBandName (int bandNumber) const |
helper function to create zero padded band names | |
virtual bool | hasHistogram (int bandNo, int binCount, double minimum=std::numeric_limits< double >::quiet_NaN(), double maximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, bool includeOutOfRange=false) |
Returns true if histogram is available (cached, already calculated) | |
Q_DECL_DEPRECATED bool | hasStatistics (int bandNo, int stats, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0) |
Returns true if histogram is available (cached, already calculated). | |
virtual bool | hasStatistics (int bandNo, Qgis::RasterBandStatistics stats=Qgis::RasterBandStatistic::All, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0) |
Returns true if histogram is available (cached, already calculated). | |
virtual QgsRasterHistogram | histogram (int bandNo, int binCount=0, double minimum=std::numeric_limits< double >::quiet_NaN(), double maximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, bool includeOutOfRange=false, QgsRasterBlockFeedback *feedback=nullptr) |
Returns a band histogram. | |
virtual QgsRasterInterface * | input () const |
Current input. | |
virtual bool | on () const |
Returns whether the interface is on or off. | |
virtual void | setOn (bool on) |
Sets whether the interface is on or off. | |
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. | |
virtual QgsRasterInterface * | sourceInput () |
Gets source / raw input, the first in pipe, usually provider. | |
virtual const QgsRasterInterface * | sourceInput () const |
Gets source / raw input, the first in pipe, usually provider. | |
virtual int | xBlockSize () const |
Gets block size. | |
virtual int | xSize () const |
Gets raster size. | |
virtual int | yBlockSize () const |
virtual int | ySize () const |
Static Public Member Functions | |
static QgsRasterRenderer * | create (const QDomElement &elem, QgsRasterInterface *input) |
Additional Inherited Members | |
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) | |
QRgb | renderColorForNodataPixel () const |
Returns the color for the renderer to use to represent nodata pixels. | |
Protected Member Functions inherited from QgsRasterInterface | |
void | initHistogram (QgsRasterHistogram &histogram, int bandNo, int binCount, double minimum=std::numeric_limits< double >::quiet_NaN(), double maximum=std::numeric_limits< double >::quiet_NaN(), const QgsRectangle &boundingBox=QgsRectangle(), int sampleSize=0, bool includeOutOfRange=false) |
Fill in histogram defaults if not specified. | |
Q_DECL_DEPRECATED void | initStatistics (QgsRasterBandStats &statistics, int bandNo, int stats, const QgsRectangle &boundingBox=QgsRectangle(), int binCount=0) const |
Fill in statistics defaults if not specified. | |
void | initStatistics (QgsRasterBandStats &statistics, int bandNo, Qgis::RasterBandStatistics stats=Qgis::RasterBandStatistic::All, const QgsRectangle &boundingBox=QgsRectangle(), int binCount=0) const |
Fill in statistics defaults if not specified. | |
Protected Attributes inherited from QgsRasterRenderer | |
int | mAlphaBand = -1 |
Read alpha value from band. | |
QgsRasterMinMaxOrigin | mMinMaxOrigin |
Origin of min/max values. | |
double | mOpacity = 1.0 |
Global alpha value (0-1) | |
QgsRasterTransparency * | mRasterTransparency = nullptr |
Raster transparency per color or value. Overwrites global alpha value. | |
QString | mType |
Protected Attributes inherited from QgsRasterInterface | |
QList< QgsRasterHistogram > | mHistograms |
List of cached histograms, all bands mixed. | |
QgsRasterInterface * | mInput = nullptr |
bool | mOn = true |
QList< QgsRasterBandStats > | mStatistics |
List of cached statistics, all bands mixed. | |
Raster renderer pipe for single band pseudocolor.
Definition at line 34 of file qgssinglebandpseudocolorrenderer.h.
QgsSingleBandPseudoColorRenderer::QgsSingleBandPseudoColorRenderer | ( | QgsRasterInterface * | input, |
int | band = -1 , |
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QgsRasterShader * | shader = nullptr |
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Note: takes ownership of QgsRasterShader.
Definition at line 30 of file qgssinglebandpseudocolorrenderer.cpp.
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delete |
QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead.
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overridevirtual |
Accepts the specified symbology visitor, causing it to visit all symbols associated with the renderer.
Returns true
if the visitor should continue visiting other objects, or false
if visiting should be canceled.
Reimplemented from QgsRasterRenderer.
Definition at line 430 of file qgssinglebandpseudocolorrenderer.cpp.
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inline |
Returns the band used by the renderer.
Definition at line 92 of file qgssinglebandpseudocolorrenderer.h.
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overridevirtual |
Read block of data using given extent and size.
Returns pointer to data. Caller is responsible to free the memory returned.
bandNo | band number |
extent | extent of block |
width | pixel width of block |
height | pixel height of block |
feedback | optional raster feedback object for cancellation/preview. Added in QGIS 3.0. |
Implements QgsRasterRenderer.
Definition at line 209 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Returns true
if the renderer is suitable for attribute table creation.
The default implementation returns false
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Reimplemented from QgsRasterRenderer.
Definition at line 491 of file qgssinglebandpseudocolorrenderer.cpp.
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inline |
Definition at line 106 of file qgssinglebandpseudocolorrenderer.h.
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inline |
Definition at line 105 of file qgssinglebandpseudocolorrenderer.h.
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overridevirtual |
Clone itself, create deep copy.
Implements QgsRasterRenderer.
Definition at line 90 of file qgssinglebandpseudocolorrenderer.cpp.
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static |
Definition at line 139 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Creates a set of legend nodes representing the renderer.
The default implementation calls legendSymbologyItems() and creates corresponding legend nodes for each returned symbology item.
Subclasses can override this to return more legend nodes which better represent the renderer.
Reimplemented from QgsRasterRenderer.
Definition at line 442 of file qgssinglebandpseudocolorrenderer.cpp.
void QgsSingleBandPseudoColorRenderer::createShader | ( | QgsColorRamp * | colorRamp = nullptr , |
Qgis::ShaderInterpolationMethod | colorRampType = Qgis::ShaderInterpolationMethod::Linear , |
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Qgis::ShaderClassificationMethod | classificationMode = Qgis::ShaderClassificationMethod::Continuous , |
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int | classes = 0 , |
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bool | clip = false , |
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const QgsRectangle & | extent = QgsRectangle() |
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) |
Creates a color ramp shader.
colorRamp | vector color ramp. Ownership is transferred to the shader. |
colorRampType | type of color ramp shader |
classificationMode | classification mode |
classes | number of classes |
clip | clip out of range values |
extent | extent used in classification (only used in quantile mode) |
Definition at line 123 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Returns flags which dictate renderer behavior.
Reimplemented from QgsRasterRenderer.
Definition at line 113 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Returns the input band for the renderer, or -1 if no input band is available.
For renderers which utilize multiple input bands -1 will be returned. In these cases usesBands() will return a list of all utilized bands (including alpha bands).
Reimplemented from QgsRasterRenderer.
Definition at line 44 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Returns symbology items if provided by renderer.
Reimplemented from QgsRasterRenderer.
Definition at line 332 of file qgssinglebandpseudocolorrenderer.cpp.
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delete |
QgsSingleBandPseudoColorRenderer cannot be copied. Use clone() instead.
void QgsSingleBandPseudoColorRenderer::setBand | ( | int | bandNo | ) |
Sets the band used by the renderer.
Definition at line 39 of file qgssinglebandpseudocolorrenderer.cpp.
void QgsSingleBandPseudoColorRenderer::setClassificationMax | ( | double | max | ) |
Definition at line 77 of file qgssinglebandpseudocolorrenderer.cpp.
void QgsSingleBandPseudoColorRenderer::setClassificationMin | ( | double | min | ) |
Definition at line 64 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Attempts to set the input band for the renderer.
Returns true
if the band was successfully set, or false
if the band could not be set.
Reimplemented from QgsRasterRenderer.
Definition at line 49 of file qgssinglebandpseudocolorrenderer.cpp.
void QgsSingleBandPseudoColorRenderer::setShader | ( | QgsRasterShader * | shader | ) |
Takes ownership of the shader.
Definition at line 118 of file qgssinglebandpseudocolorrenderer.cpp.
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inline |
Returns the raster shader.
Definition at line 57 of file qgssinglebandpseudocolorrenderer.h.
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inline |
Definition at line 60 of file qgssinglebandpseudocolorrenderer.h.
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overridevirtual |
Used from subclasses to create SLD Rule elements following SLD v1.0 specs.
Reimplemented from QgsRasterRenderer.
Definition at line 356 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Returns a list of band numbers used by the renderer.
Reimplemented from QgsRasterRenderer.
Definition at line 346 of file qgssinglebandpseudocolorrenderer.cpp.
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overridevirtual |
Write base class members to xml.
Reimplemented from QgsRasterInterface.
Definition at line 312 of file qgssinglebandpseudocolorrenderer.cpp.