QGIS API Documentation  2.99.0-Master (f867b65)
qgssinglebandcolordatarenderer.h
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1 /***************************************************************************
2  qgssinglebandcolordatarenderer.h
3  --------------------------------
4  begin : January 2012
5  copyright : (C) 2012 by Marco Hugentobler
6  email : marco at sourcepole dot ch
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSSINGLEBANDCOLORDATARENDERER_H
19 #define QGSSINGLEBANDCOLORDATARENDERER_H
20 
21 #include "qgis_core.h"
22 #include "qgis_sip.h"
23 #include "qgsrasterrenderer.h"
24 
25 class QDomElement;
26 
31 {
32  public:
34 
39 
41 
42  static QgsRasterRenderer *create( const QDomElement &elem, QgsRasterInterface *input ) SIP_FACTORY;
43 
44  bool setInput( QgsRasterInterface *input ) override;
45 
46  QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback = nullptr ) override SIP_FACTORY;
47 
48  void writeXml( QDomDocument &doc, QDomElement &parentElem ) const override;
49 
50  QList<int> usesBands() const override;
51 
52  private:
53 #ifdef SIP_RUN
56 #endif
57  int mBand;
58 
59 };
60 
61 #endif // QGSSINGLEBANDCOLORDATARENDERER_H
A rectangle specified with double values.
Definition: qgsrectangle.h:38
virtual QList< int > usesBands() const
Returns a list of band numbers used by the renderer.
Raster renderer pipe for single band color.
virtual bool setInput(QgsRasterInterface *input) override
Set input.
Raster data container.
#define SIP_FACTORY
Definition: qgis_sip.h:69
Base class for processing filters like renderers, reprojector, resampler etc.
const QgsRasterRenderer & operator=(const QgsRasterRenderer &)=delete
QgsRasterRenderer cannot be copied. Use clone() instead.
QgsRasterRenderer * clone() const override=0
Clone itself, create deep copy.
virtual void writeXml(QDomDocument &doc, QDomElement &parentElem) const
Write base class members to xml.
Feedback object tailored for raster block reading.
Raster renderer pipe that applies colors to a raster.
virtual 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.