public bool Convert(FilterRequest req)
{
string source = req.Current.LocalPath;
System.Uri dest_uri = req.TempUri(System.IO.Path.GetExtension(source));
string dest = dest_uri.LocalPath;
using (ImageFile img = ImageFile.Create(source)) {
bool changed = false;
if (img.Orientation != PixbufOrientation.TopLeft && img is JpegFile)
{
JpegFile jimg = img as JpegFile;
if (img.Orientation == PixbufOrientation.RightTop)
{
JpegUtils.Transform(source,
dest,
JpegUtils.TransformType.Rotate90);
changed = true;
}
else if (img.Orientation == PixbufOrientation.LeftBottom)
{
JpegUtils.Transform(source,
dest,
JpegUtils.TransformType.Rotate270);
changed = true;
}
else if (img.Orientation == PixbufOrientation.BottomRight)
{
JpegUtils.Transform(source,
dest,
JpegUtils.TransformType.Rotate180);
changed = true;
}
int width, height;
jimg = ImageFile.Create(dest) as JpegFile;
PixbufUtils.GetSize(dest, out width, out height);
jimg.SetOrientation(PixbufOrientation.TopLeft);
jimg.SetDimensions(width, height);
Gdk.Pixbuf pixbuf = new Gdk.Pixbuf(dest, 160, 120, true);
jimg.SetThumbnail(pixbuf);
pixbuf.Dispose();
jimg.SaveMetaData(dest);
jimg.Dispose();
}
if (changed)
{
req.Current = dest_uri;
}
return(changed);
}
}