QGIS API Documentation  2.99.0-Master (314842d)
qgsprevieweffect.h
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1 /***************************************************************************
2  qgsprevieweffect.h
3  -------------------
4  begin : March 2014
5  copyright : (C) 2014 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
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 QGSPREVIEWEFFECT_H
19 #define QGSPREVIEWEFFECT_H
20 
21 #include <QGraphicsEffect>
22 #include "qgis_gui.h"
23 
29 class GUI_EXPORT QgsPreviewEffect: public QGraphicsEffect
30 {
31  Q_OBJECT
32 
33  public:
35  {
39  PreviewDeuteranope
40  };
41 
42  QgsPreviewEffect( QObject *parent );
43 
49  void setMode( PreviewMode mode );
50 
56  PreviewMode mode() const { return mMode; }
57 
58  protected:
59  virtual void draw( QPainter *painter ) override;
60 
61  private:
62 
63  PreviewMode mMode;
64 
65  QRgb simulateColorBlindness( QRgb &originalColor, PreviewMode type );
66  void simulateProtanopeLMS( double &L, double &M, double &S );
67  void simulateDeuteranopeLMS( double &L, double &M, double &S );
68 };
69 
70 #endif // QGSPREVIEWEFFECT_H
A graphics effect which can be applied to a widget to simulate various printing and color blindness m...
PreviewMode mode() const
Returns the mode used for the preview effect.