QGIS API Documentation  2.99.0-Master (69af2f5)
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.h"
23 #include "qgis_gui.h"
24 
30 class GUI_EXPORT QgsPreviewEffect: public QGraphicsEffect
31 {
32  Q_OBJECT
33 
34  public:
36  {
40  PreviewDeuteranope
41  };
42 
43  QgsPreviewEffect( QObject *parent SIP_TRANSFERTHIS );
44 
50  void setMode( PreviewMode mode );
51 
57  PreviewMode mode() const { return mMode; }
58 
59  protected:
60  virtual void draw( QPainter *painter ) override;
61 
62  private:
63 
64  PreviewMode mMode;
65 
66  QRgb simulateColorBlindness( QRgb &originalColor, PreviewMode type );
67  void simulateProtanopeLMS( double &L, double &M, double &S );
68  void simulateDeuteranopeLMS( double &L, double &M, double &S );
69 };
70 
71 #endif // QGSPREVIEWEFFECT_H
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:34
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.