QGIS API Documentation  2.99.0-Master (a411669)
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 
31 class GUI_EXPORT QgsPreviewEffect: public QGraphicsEffect
32 {
33  Q_OBJECT
34 
35  public:
37  {
41  PreviewDeuteranope
42  };
43 
44  QgsPreviewEffect( QObject *parent SIP_TRANSFERTHIS );
45 
52  void setMode( PreviewMode mode );
53 
60  PreviewMode mode() const { return mMode; }
61 
62  protected:
63  virtual void draw( QPainter *painter ) override;
64 
65  private:
66 
67  PreviewMode mMode;
68 
69  QRgb simulateColorBlindness( QRgb &originalColor, PreviewMode type );
70  void simulateProtanopeLMS( double &L, double &M, double &S );
71  void simulateDeuteranopeLMS( double &L, double &M, double &S );
72 };
73 
74 #endif // QGSPREVIEWEFFECT_H
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:46
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.