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qgssinglebandpseudocolorrenderer.h
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1 /***************************************************************************
2  qgssinglebandpseudocolorrenderer.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 QGSSINGLEBANDPSEUDOCOLORRENDERER_H
19 #define QGSSINGLEBANDPSEUDOCOLORRENDERER_H
20 
21 #include "qgsrasterrenderer.h"
22 
23 class QDomElement;
24 class QgsRasterShader;
25 
30 {
31  public:
35  QgsRasterInterface * clone() const override;
36 
37  static QgsRasterRenderer* create( const QDomElement& elem, QgsRasterInterface* input );
38 
39  QgsRasterBlock* block( int bandNo, const QgsRectangle & extent, int width, int height ) override;
40 
42  void setShader( QgsRasterShader* shader );
43  QgsRasterShader* shader() { return mShader; }
44  const QgsRasterShader* shader() const { return mShader; }
45 
46  void writeXML( QDomDocument& doc, QDomElement& parentElem ) const override;
47 
48  void legendSymbologyItems( QList< QPair< QString, QColor > >& symbolItems ) const override;
49 
50  QList<int> usesBands() const override;
51 
55  int band() const { return mBand; }
56 
61  void setBand( int bandNo );
62 
63  double classificationMin() const { return mClassificationMin; }
64  double classificationMax() const { return mClassificationMax; }
65  void setClassificationMin( double min ) { mClassificationMin = min; }
66  void setClassificationMax( double max ) { mClassificationMax = max; }
67  int classificationMinMaxOrigin() const { return mClassificationMinMaxOrigin; }
68  void setClassificationMinMaxOrigin( int origin ) { mClassificationMinMaxOrigin = origin; }
69 
70  private:
71  QgsRasterShader* mShader;
72  int mBand;
73 
74  // Minimum and maximum values used for automatic classification, these
75  // values are not used by renderer in rendering process
76  double mClassificationMin;
77  double mClassificationMax;
78 
79  int mClassificationMinMaxOrigin;
80 };
81 
82 #endif // QGSSINGLEBANDPSEUDOCOLORRENDERER_H
A rectangle specified with double values.
Definition: qgsrectangle.h:35
Interface for all raster shaders.
virtual QList< int > usesBands() const
Returns a list of band numbers used by the renderer.
double ANALYSIS_EXPORT max(double x, double y)
Returns the maximum of two doubles or the first argument if both are equal.
Raster data container.
int band() const
Returns the band used by the renderer.
virtual void writeXML(QDomDocument &doc, QDomElement &parentElem) const
Write base class members to xml.
Raster renderer pipe for single band pseudocolor.
Base class for processing filters like renderers, reprojector, resampler etc.
QgsRasterInterface * clone() const override=0
Clone itself, create deep copy.
virtual void legendSymbologyItems(QList< QPair< QString, QColor > > &symbolItems) const
Get symbology items if provided by renderer.
double ANALYSIS_EXPORT min(double x, double y)
Returns the minimum of two doubles or the first argument if both are equal.
Raster renderer pipe that applies colors to a raster.
virtual QgsRasterBlock * block(int bandNo, const QgsRectangle &extent, int width, int height) override=0
Read block of data using given extent and size.