CuteLogger
Fast and simple logging solution for Qt based applications
producerpreviewwidget.h
1 /*
2  * Copyright (c) 2020 Meltytech, LLC
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef PRODUCERPREVIEWWIDGET_H
19 #define PRODUCERPREVIEWWIDGET_H
20 
21 #include "dataqueue.h"
22 
23 #include <QFuture>
24 #include <QPixmap>
25 #include <QWidget>
26 
27 class QLabel;
28 class ScrubBar;
29 namespace Mlt {
30  class Producer;
31 }
32 
33 class ProducerPreviewWidget : public QWidget
34 {
35  Q_OBJECT
36 
37 public:
38  explicit ProducerPreviewWidget(double dar);
39  virtual ~ProducerPreviewWidget();
40 
41  void start(Mlt::Producer* producer);
42  void stop();
43  void showText(QString text);
44 
45 private slots:
46  void seeked(int);
47 
48 private:
49  void timerEvent(QTimerEvent*) override;
50  void frameGeneratorThread();
51 
52  QSize m_previewSize;
53  QLabel* m_imageLabel;
54  ScrubBar* m_scrubber;
55  QLabel* m_posLabel;
56  int m_seekTo;
57  int m_timerId;
58  Mlt::Producer* m_producer;
59  struct QueueItem
60  {
61  QPixmap pixmap;
62  int position;
63  QString positionText;
64  };
65  DataQueue<QueueItem> m_queue;
66  QFuture<void> m_future;
67  bool m_generateFrames;
68 };
69 
70 #endif // PRODUCERPREVIEWWIDGET_H
DataQueue< QueueItem >