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39 #ifndef BBCAMERAORIENTATIONHANDLER_H
40 #define BBCAMERAORIENTATIONHANDLER_H
41 
42 #include <QAbstractNativeEventFilter>
43 #include <QObject>
44 
45 QT_BEGIN_NAMESPACE
46 
47 class BbCameraOrientationHandler : public QObject, public QAbstractNativeEventFilter
48 {
49     Q_OBJECT
50 public:
51     explicit BbCameraOrientationHandler(QObject *parent = 0);
52     ~BbCameraOrientationHandler();
53 
54     bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override;
55 
56     int orientation() const;
57 
58     int viewfinderOrientation() const;
59 
60 Q_SIGNALS:
61     void orientationChanged(int degree);
62 
63 private:
64     int m_orientation;
65 };
66 
67 QT_END_NAMESPACE
68 
69 #endif
70