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50
51#ifndef PLAYERCONTROLS_H
52#define PLAYERCONTROLS_H
53
54#include <QMediaPlayer>
55#include <QWidget>
56
57QT_BEGIN_NAMESPACE
58class QAbstractButton;
59class QAbstractSlider;
60class QComboBox;
61QT_END_NAMESPACE
62
63class PlayerControls : public QWidget
64{
65 Q_OBJECT
66
67public:
68 explicit PlayerControls(QWidget *parent = nullptr);
69
70 QMediaPlayer::State state() const;
71 int volume() const;
72 bool isMuted() const;
73 qreal playbackRate() const;
74
75public slots:
76 void setState(QMediaPlayer::State state);
77 void setVolume(int volume);
78 void setMuted(bool muted);
79 void setPlaybackRate(float rate);
80
81signals:
82 void play();
83 void pause();
84 void stop();
85 void next();
86 void previous();
87 void changeVolume(int volume);
88 void changeMuting(bool muting);
89 void changeRate(qreal rate);
90
91private slots:
92 void playClicked();
93 void muteClicked();
94 void updateRate();
95 void onVolumeSliderValueChanged();
96
97private:
98 QMediaPlayer::State m_playerState = QMediaPlayer::StoppedState;
99 bool m_playerMuted = false;
100 QAbstractButton *m_playButton = nullptr;
101 QAbstractButton *m_stopButton = nullptr;
102 QAbstractButton *m_nextButton = nullptr;
103 QAbstractButton *m_previousButton = nullptr;
104 QAbstractButton *m_muteButton = nullptr;
105 QAbstractSlider *m_volumeSlider = nullptr;
106 QComboBox *m_rateBox = nullptr;
107};
108
109#endif // PLAYERCONTROLS_H
110

source code of qtmultimedia/examples/multimediawidgets/player/playercontrols.h