public async Task Move(int updown)
{
_timer.Stop();
// Calculate index position
var sequence = _book.Sequence.Where(
w => w.Filename == _playerInfo.CurrentFilename &&
w.TCIn <= _playerInfo.Position.CurrentTC &&
w.TCOut > _playerInfo.Position.CurrentTC).FirstOrDefault();
if (sequence != null)
{
_playerInfo.Position.CurrentIndex = _book.Sequence.IndexOf(sequence);
}
var index = _playerInfo.Position.CurrentIndex;
do
{
index += updown;
} while (index > 0 && index < _book.Sequence.Count && _book.Sequence[index].Level > _playerInfo.Position.NavigationLevel);
// adjust bounds
if (index < 0)
{
index = 0;
return;
}
else if (index > _book.Sequence.Count - 1)
{
index = _book.Sequence.Count - 1;
return;
}
else
{
_playerInfo.Position.CurrentIndex = index;
_playerInfo.Position.CurrentSOM = _book.Sequence[index].SOM;
_playerInfo.Position.CurrentTC = _book.Sequence[index].TCIn;
_playerInfo.Position.CurrentTitle = _book.Sequence[index].Title;
ChapterUpdate?.Invoke(_book.Title, _playerInfo.Position.CurrentTitle);
TimeCodeUpdate?.Invoke(
new TimeSpan()
.Add(TimeSpan.FromSeconds(_playerInfo.Position.CurrentSOM))
.Add(TimeSpan.FromSeconds(_playerInfo.Position.CurrentTC))
);
}
await CrossMediaManager.Current.Pause();
if (_book.Sequence[index].Filename != _playerInfo.CurrentFilename)
{
_playerInfo.CurrentFilename = $"{_book.Sequence[index].Filename}";
_fileChanged = true;
}
_timer.Start();
SaveStatus();
}
private void Current_PositionChanged(object sender, MediaManager.Playback.PositionChangedEventArgs e)
{
if (_playerInfo != null)
{
if (CrossMediaManager.Current.State == MediaPlayerState.Playing)
{
_playerInfo.Position.CurrentTC = e.Position.TotalSeconds;
TimeCodeUpdate?.Invoke(
new TimeSpan()
.Add(e.Position)
.Add(TimeSpan.FromSeconds(_playerInfo.Position.CurrentSOM))
);
}
}
}