private void grabThumbnails_UpdateProgressCallback(MediaThumb thumb)
{
ItemProgress += 1;
}
private void grabThumbnails_UpdateProgressCallback(MediaThumb thumb)
{
ItemProgress += 1;
}
async void Timer_Elapsed(object sender, EventArgs e)
{
Timer.Stop();
Point mousePos = Mouse.GetPosition(previewImage);
double position = mousePos.X / previewImage.ActualWidth;
Interlocked.Increment(ref nrWaitingThreads);
try
{
MediaThumb thumbnail = await Task <MediaThumb> .Factory.StartNew(() =>
{
Semaphore.Wait();
Interlocked.Decrement(ref nrWaitingThreads);
if (nrWaitingThreads > 0 || TokenSource.IsCancellationRequested)
{
return(null);
}
return(ViewModel.getVideoPreviewThumbnail(position, TokenSource.Token));
});
if (thumbnail == null)
{
return;
}
previewImage.Source = thumbnail.Thumb;
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
adornerLayer.Remove(TimeAdorner);
Size size = TimeAdorner.Size;
double xLeft = mousePos.X - size.Width / 2;
double xRight = xLeft + size.Width;
if (xLeft < 0)
{
xLeft = 0;
}
if (xRight > previewImage.ActualWidth)
{
xLeft = previewImage.ActualWidth - size.Width;
}
TimeAdorner.Location = new Point(xLeft, previewImage.ActualHeight - size.Height);
TimeAdorner.TimeSeconds = (int)thumbnail.PositionSeconds;
adornerLayer.Add(TimeAdorner);
}
catch (Exception)
{
}
finally
{
Semaphore.Release();
}
}