QGIS API Documentation  3.17.0-Master (a84647cf30)
qgslayouteffect.h
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1 /***************************************************************************
2  qgslayouteffect.h
3  -------------------
4  begin : October 2017
5  copyright : (C) 2017 by Nyall Dawson
6  email : [email protected]
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 QGSLAYOUTEFFECT_H
19 #define QGSLAYOUTEFFECT_H
20 
21 #include <QGraphicsEffect>
22 #include <QPainter>
23 
24 #include "qgis_core.h"
25 
35 class CORE_EXPORT QgsLayoutEffect : public QGraphicsEffect
36 {
37  Q_OBJECT
38 
39  public:
40 
44  QgsLayoutEffect() = default;
45 
51  void setCompositionMode( QPainter::CompositionMode mode );
52 
58  QPainter::CompositionMode compositionMode() const { return mCompositionMode; }
59 
60  protected:
61 
62  void draw( QPainter *painter ) override;
63 
64  private:
65 
66  QPainter::CompositionMode mCompositionMode = QPainter::CompositionMode_SourceOver;
67 };
68 
69 #endif // QGSLAYOUTEFFECT_H
70 
A QGraphicsEffect subclass used for rendering layout items onto a scene with custom composition modes...
QPainter::CompositionMode compositionMode() const
Returns the composition (blending) mode used for rendering the item.