QGIS API Documentation  3.21.0-Master (5b68dc587e)
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_sip.h"
23 #include "qgis_gui.h"
24 
31 class GUI_EXPORT QgsPreviewEffect: public QGraphicsEffect
32 {
33  Q_OBJECT
34 
35  public:
37  {
42  PreviewTritanope
43  };
44 
45  QgsPreviewEffect( QObject *parent SIP_TRANSFERTHIS );
46 
53  void setMode( PreviewMode mode );
54 
61  PreviewMode mode() const { return mMode; }
62 
63  protected:
64  void draw( QPainter *painter ) override;
65 
66  private:
67 
68  PreviewMode mMode;
69 
70  QRgb simulateColorBlindness( QRgb &originalColor, PreviewMode type );
71  void simulateGrayscale( int &r, int &g, int &b, int &red, int &green, int &blue );
72  void simulateProtanope( int &r, int &g, int &b, int &red, int &green, int &blue );
73  void simulateDeuteranope( int &r, int &g, int &b, int &red, int &green, int &blue );
74  void simulateTritanope( int &r, int &g, int &b, int &red, int &green, int &blue );
75 };
76 
77 #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.
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53