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39
40#ifndef QMEDIAPLAYLISTNAVIGATOR_P_H
41#define QMEDIAPLAYLISTNAVIGATOR_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qmediaplaylistprovider_p.h"
55#include "qmediaplaylist.h"
56#include <QtCore/qobject.h>
57
58QT_BEGIN_NAMESPACE
59
60
61class QMediaPlaylistNavigatorPrivate;
62class Q_MULTIMEDIA_EXPORT QMediaPlaylistNavigator : public QObject
63{
64 Q_OBJECT
65 Q_PROPERTY(QMediaPlaylist::PlaybackMode playbackMode READ playbackMode WRITE setPlaybackMode NOTIFY playbackModeChanged)
66 Q_PROPERTY(int currentIndex READ currentIndex WRITE jump NOTIFY currentIndexChanged)
67 Q_PROPERTY(QMediaContent currentItem READ currentItem)
68
69public:
70 QMediaPlaylistNavigator(QMediaPlaylistProvider *playlist, QObject *parent = nullptr);
71 virtual ~QMediaPlaylistNavigator();
72
73 QMediaPlaylistProvider *playlist() const;
74 void setPlaylist(QMediaPlaylistProvider *playlist);
75
76 QMediaPlaylist::PlaybackMode playbackMode() const;
77
78 QMediaContent currentItem() const;
79 QMediaContent nextItem(int steps = 1) const;
80 QMediaContent previousItem(int steps = 1) const;
81
82 QMediaContent itemAt(int position) const;
83
84 int currentIndex() const;
85 int nextIndex(int steps = 1) const;
86 int previousIndex(int steps = 1) const;
87
88public Q_SLOTS:
89 void next();
90 void previous();
91
92 void jump(int);
93
94 void setPlaybackMode(QMediaPlaylist::PlaybackMode mode);
95
96Q_SIGNALS:
97 void activated(const QMediaContent &content);
98 void currentIndexChanged(int);
99 void playbackModeChanged(QMediaPlaylist::PlaybackMode mode);
100
101 void surroundingItemsChanged();
102
103protected:
104 QMediaPlaylistNavigatorPrivate *d_ptr;
105
106private:
107 Q_DISABLE_COPY(QMediaPlaylistNavigator)
108 Q_DECLARE_PRIVATE(QMediaPlaylistNavigator)
109
110 Q_PRIVATE_SLOT(d_func(), void _q_mediaInserted(int start, int end))
111 Q_PRIVATE_SLOT(d_func(), void _q_mediaRemoved(int start, int end))
112 Q_PRIVATE_SLOT(d_func(), void _q_mediaChanged(int start, int end))
113};
114
115QT_END_NAMESPACE
116
117
118#endif // QMEDIAPLAYLISTNAVIGATOR_P_H
119

source code of qtmultimedia/src/multimedia/playback/qmediaplaylistnavigator_p.h