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50
51#ifndef PROGRESSBAR_H
52#define PROGRESSBAR_H
53
54#include <QWidget>
55
56/**
57 * Widget which displays a the current fill state of the Engine's internal
58 * buffer, and the current play/record position within that buffer.
59 */
60class ProgressBar : public QWidget
61{
62 Q_OBJECT
63
64public:
65 explicit ProgressBar(QWidget *parent = 0);
66 ~ProgressBar();
67
68 void reset();
69 void paintEvent(QPaintEvent *event) override;
70
71public slots:
72 void bufferLengthChanged(qint64 length);
73 void recordPositionChanged(qint64 recordPosition);
74 void playPositionChanged(qint64 playPosition);
75 void windowChanged(qint64 position, qint64 length);
76
77private:
78 qint64 m_bufferLength;
79 qint64 m_recordPosition;
80 qint64 m_playPosition;
81 qint64 m_windowPosition;
82 qint64 m_windowLength;
83};
84
85#endif // PROGRESSBAR_H
86

source code of qtmultimedia/examples/multimedia/spectrum/app/progressbar.h