1 /****************************************************************************
2 **
3 ** Copyright (C) 2015 The Qt Company Ltd.
4 ** Contact: http://www.qt.io/licensing/
5 **
6 ** This file is part of the examples of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
10 **
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
13 ** met:
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
19 ** distribution.
20 ** * Neither the name of The Qt Company Ltd nor the names of its
21 ** contributors may be used to endorse or promote products derived
22 ** from this software without specific prior written permission.
23 **
24 **
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
36 **
37 ** $QT_END_LICENSE$
38 **
39 ****************************************************************************/
40
41 #ifndef MUSICPLAYER_H
42 #define MUSICPLAYER_H
43
44 #include <QWidget>
45 #include <QMediaPlayer>
46
47 class VolumeButton;
48
49 QT_FORWARD_DECLARE_CLASS(QLabel)
QT_FORWARD_DECLARE_CLASS(QSlider)50 QT_FORWARD_DECLARE_CLASS(QSlider)
51 QT_FORWARD_DECLARE_CLASS(QAbstractButton)
52
53 class MusicPlayer : public QWidget
54 {
55 Q_OBJECT
56 public:
57 explicit MusicPlayer(QWidget *parent = nullptr);
58
59 static QStringList supportedMimeTypes();
60 static QStringList supportedSuffixes();
61
62 public slots:
63 void openFile();
64 void playUrl(const QUrl& url);
65 void togglePlayback();
66 void seekForward();
67 void seekBackward();
68
69 protected:
70 bool event(QEvent *event) override;
71 void dragEnterEvent(QDragEnterEvent *event) override;
72 void dropEvent(QDropEvent *event) override;
73 void mousePressEvent(QMouseEvent *event) override;
74 void mouseMoveEvent(QMouseEvent *event) override;
75 void mouseReleaseEvent(QMouseEvent *event) override;
76
77 private slots:
78 void updateState(QMediaPlayer::State state);
79 void updatePosition(qint64 position);
80 void updateDuration(qint64 duration);
81 void setPosition(int position);
82 void updateInfo();
83 void handleError();
84
85 private:
86 void createWidgets();
87 void createShortcuts();
88 void createJumpList();
89
90 QMediaPlayer mediaPlayer;
91 QAbstractButton *playButton = nullptr;
92 VolumeButton *volumeButton = nullptr;
93 QSlider *positionSlider = nullptr;
94 QLabel *positionLabel = nullptr;
95 QLabel *infoLabel = nullptr;
96 QPoint offset;
97 QString fileName;
98 };
99
100 #endif // MUSICPLAYER_H
101