protected override Bitmap GetThumbnailImage(uint width)
{
Logging.Log("in GetThumbnailImage");
byte[] buffer = new byte[SelectedItemStream.Length];
SelectedItemStream.Read(buffer, 0, (int)SelectedItemStream.Length);
using (var fs = new MemoryStream(buffer))
{
byte[] array = Workspace.LoadThumbnailFromStream(fs);
Logging.Log("Datei eingelesen");
Bitmap bmp;
Bitmap result;
using (var ms = new MemoryStream(array))
{
bmp = new Bitmap(ms);
int largerSide = Math.Max(bmp.Size.Height, bmp.Size.Width);
result = new Bitmap(largerSide + 2, largerSide + 2);
Graphics g = Graphics.FromImage(result);
g.Clear(System.Drawing.Color.White);
g.DrawImage(bmp, largerSide / 2 + 1 - bmp.Size.Width / 2,
largerSide / 2 + 1 - bmp.Size.Height / 2, bmp.Size.Width, bmp.Size.Height);
g.DrawRectangle(new Pen(Color.Black), new Rectangle(0, 0, largerSide, largerSide));
//debug
//g.DrawString($"size:{bmp.Size.Width}x{bmp.Size.Height}", new Font("Arial", 5, FontStyle.Regular), Brushes.Black, 5, 5);
}
return(result);
}
}
protected override Bitmap GetThumbnailImage(uint width)
{
using (MemoryStream _cStream = new MemoryStream())
{
SelectedItemStream.CopyTo(_cStream);
_tImage = new Lazy <IImageRead>(() => Imgd.Read(_cStream));
var size = _tImage.Value.Size;
var data = _tImage.Value.ToBgra32();
using (MarshalBitmap _tBitmap = new MarshalBitmap(size.Width, size.Height, data))
{
_rBitmap = new Lazy <Bitmap>(() => new Bitmap(_tBitmap.Bitmap, (int)width, (int)width));
return(_rBitmap.Value);
}
}
}
