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    40 

    41 #ifndef PLAYERCONTROLS_H

    42 #define PLAYERCONTROLS_H

    43 

    44 #include <qmediaplayer.h>

    45 

    46 #include <QtGui/qwidget.h>

    47 

    48 QT_BEGIN_NAMESPACE

    49 class QAbstractButton;

    50 class QAbstractSlider;

    51 class QComboBox;

    52 QT_END_NAMESPACE

    53 

    54 QT_USE_NAMESPACE

    55 

    56 class PlayerControls : public QWidget

    57 {

    58     Q_OBJECT

    59 public:

    60     PlayerControls(QWidget *parent = 0);

    61 

    62     QMediaPlayer::State state() const;

    63 

    64     int volume() const;

    65     bool isMuted() const;

    66     qreal playbackRate() const;

    67 

    68 public slots:

    69     void setState(QMediaPlayer::State state);

    70     void setVolume(int volume);

    71     void setMuted(bool muted);

    72     void setPlaybackRate(float rate);

    73 

    74 signals:

    75     void play();

    76     void pause();

    77     void stop();

    78     void next();

    79     void previous();

    80     void changeVolume(int volume);

    81     void changeMuting(bool muting);

    82     void changeRate(qreal rate);

    83 

    84 private slots:

    85     void playClicked();

    86     void muteClicked();

    87     void updateRate();

    88 

    89 private:

    90     QMediaPlayer::State playerState;

    91     bool playerMuted;

    92     QAbstractButton *playButton;

    93     QAbstractButton *stopButton;

    94     QAbstractButton *nextButton;

    95     QAbstractButton *previousButton;

    96     QAbstractButton *muteButton;

    97     QAbstractSlider *volumeSlider;

    98     QComboBox *rateBox;

    99 };

   100 

   101 #endif