private void DownloadThumbnailDone(String fileId)
{
log.Debug("[DownloadThumbnailDone] Download done - fileDescriptorId:[{0}]", fileId);
if (!thumbnailDownloaded.Contains(fileId))
{
thumbnailDownloaded.Add(fileId);
}
//If it's a direct download we need to create thumbnail
if (thumbnailDirectToDownload.Contains(fileId))
{
log.Debug("[DownloadThumbnailDone] Direct Download done - fileDescriptorId:[{0}]", fileId);
// Need to scale thumbnail according density and max size expected
double density = 1;
double maxWidth = MaxThumbnailWidth * density;
double maxHeight = MaxThumbnailHeight * density;
String filePath = GetFullFilePath(fileId);
String filePathThumbnail = GetThumbnailFullFilePath(fileId);
try
{
using (Stream stream = new MemoryStream(File.ReadAllBytes(filePath)))
{
System.Drawing.Size size = avatarPool.GetSize(stream);
double width = size.Width * density;
double height = size.Height * density;
double scaleWidth = density;
double scaleHeight = density;
double scaleUsed;
if (width > maxWidth)
{
scaleWidth = maxWidth / size.Width;
}
if (height > maxHeight)
{
scaleHeight = maxHeight / size.Height;
}
if (scaleWidth > scaleHeight)
{
scaleUsed = scaleHeight;
}
else
{
scaleUsed = scaleWidth;
}
// Scale thumbnail
int widthUsed = (int)Math.Floor(size.Width * scaleUsed);
int heightUsed = (int)Math.Floor(size.Height * scaleUsed);
stream.Seek(0, SeekOrigin.Begin);
Stream resultStream = avatarPool.GetScaled(stream, widthUsed, heightUsed);
// Delete previous thumbnail file (if any ... Whould not occurs)
if (File.Exists(filePathThumbnail))
{
File.Delete(filePathThumbnail);
}
// Save new image
using (Stream streamFile = File.Create(filePathThumbnail))
resultStream.CopyTo(streamFile);
resultStream.Close();
log.Debug("[FileStorage_FileDownloadUpdated] scale thumbnail according density - fileDescriptorId:[{0}] - density:[{1}]", fileId, density);
}
}
catch
{
}
}
else
{
log.Debug("[FileStorage_FileDownloadUpdated] Thumbnail Download done - fileDescriptorId:[{0}]", fileId);
}
Task task = new Task(() =>
{
ThumbnailAvailable.Invoke(this, new IdEventArgs(fileId));
});
task.Start();
}
internal void OnThumbnailAvailable(object sender, IdEventArgs args)
{
ThumbnailAvailable.Raise(sender, args);
}
