18#ifndef QGSRASTERRENDERER_H
19#define QGSRASTERRENDERER_H
69 virtual QString
type()
const {
return mType; }
76 virtual Qgis::RasterRendererFlags flags()
const;
86 bool usesTransparency()
const;
93 void setOpacity(
double opacity ) { mOpacity = opacity; }
136 virtual QList< QPair< QString, QColor > > legendSymbologyItems()
const;
151 void readXml(
const QDomElement &rendererElem )
override;
158 void copyCommonProperties(
const QgsRasterRenderer *other,
bool copyMinMaxOrigin =
true );
161 virtual QList<int>
usesBands()
const {
return QList<int>(); }
173 virtual void toSld( QDomDocument &doc, QDomElement &element,
const QVariantMap &props = QVariantMap() )
const;
189 void _writeXml( QDomDocument &doc, QDomElement &rasterRendererElem )
const;
194 double mOpacity = 1.0;
215 QRgb renderColorForNodataPixel()
const;
DataType
Raster data types.
Layer tree node points to a map layer.
The QgsLegendRendererItem class is abstract interface for legend items returned from QgsMapLayerLegen...
Feedback object tailored for raster block reading.
Base class for processing filters like renderers, reprojector, resampler etc.
virtual Qgis::DataType dataType(int bandNo) const =0
Returns data type for the band specified by number.
virtual int bandCount() const =0
Gets number of bands.
virtual void readXml(const QDomElement &filterElem)
Sets base class members from xml. Usually called from create() methods of subclasses.
virtual bool setInput(QgsRasterInterface *input)
Set input.
This class describes the origin of min/max values.
Raster renderer pipe that applies colors to a raster.
QColor nodataColor() const
Returns the color to use for shading nodata pixels.
virtual QString type() const
Returns a unique string representation of the renderer type.
void setMinMaxOrigin(const QgsRasterMinMaxOrigin &origin)
Sets origin of min/max values.
const QgsRasterTransparency * rasterTransparency() const
const QgsRasterMinMaxOrigin & minMaxOrigin() const
Returns const reference to origin of min/max values.
double opacity() const
Returns the opacity for the renderer, where opacity is a value between 0 (totally transparent) and 1....
QgsRasterBlock * block(int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback=nullptr) override=0
Read block of data using given extent and size.
virtual QList< int > usesBands() const
Returns a list of band numbers used by the renderer.
void setAlphaBand(int band)
void setOpacity(double opacity)
Sets the opacity for the renderer, where opacity is a value between 0 (totally transparent) and 1....
QgsRasterMinMaxOrigin mMinMaxOrigin
Origin of min/max values.
QgsRasterRenderer(const QgsRasterRenderer &)=delete
QgsRasterRenderer cannot be copied. Use clone() instead.
static const QRgb NODATA_COLOR
void setNodataColor(const QColor &color)
Sets the color to use for shading nodata pixels.
const QgsRasterRenderer & operator=(const QgsRasterRenderer &)=delete
QgsRasterRenderer cannot be copied. Use clone() instead.
QgsRasterRenderer * clone() const override=0
Clone itself, create deep copy.
Defines the list of pixel values to be considered as transparent or semi transparent when rendering r...
A rectangle specified with double values.
An interface for classes which can visit style entity (e.g.