private string BuildThumb(PhysicalFileFromTemp file)
{
return(string.Empty);
string thumbPathRoot = IOUtil.ResolvePath(ThumbRoot);
string extendName = Path.GetExtension(file.TempUploadFileName);
string level1 = file.MD5.Substring(0, 1);
string level2 = file.MD5.Substring(1, 1);
string level3 = file.MD5.Substring(2, 1);
extendName = extendName.ToLower();
string thumbFilename = string.Format("{0}_{1}.png", file.MD5, file.FileSize);
string dir = IOUtil.JoinPath(thumbPathRoot, level1, level2, level3);
try
{
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
}
catch
{
return(string.Empty);
}
string thumbFilePath = IOUtil.JoinPath(thumbPathRoot, level1, level2, level3, thumbFilename);
string thumbUrl = UrlUtil.JoinUrl(ThumbRoot, level1, level2, level3, thumbFilename);
switch (extendName)
{
case ".jpg":
case ".jpge":
case ".bmp":
case ".png":
case ".gif":
Image img = null, imgThumb = null;
try
{
img = Bitmap.FromFile(file.PhysicalFilePath);
}
catch // (Exception ex)
{
return(string.Empty);
}
using (imgThumb = new Bitmap(ThumbSize, ThumbSize))
{
int x, y, w, h;
float scale = (float)img.Width / (float)img.Height;
if (img.Width > img.Height)
{
x = 0; w = ThumbSize;
h = (int)((float)w / scale);
y = (ThumbSize - h) / 2;
}
else if (img.Width == img.Height)
{
x = 0;
y = 0;
w = ThumbSize;
h = ThumbSize;
}
else
{
y = 0;
h = ThumbSize;
w = (int)((float)ThumbSize * scale);
x = (ThumbSize - w) / 2;
}
using (Graphics g = Graphics.FromImage(imgThumb))
{
g.Clear(Color.White);
g.DrawImage(img, new Rectangle(x, y, w, h), new Rectangle(0, 0, img.Width, img.Height), GraphicsUnit.Pixel);
g.Save();
}
try
{
img.Save(thumbFilePath, System.Drawing.Imaging.ImageFormat.Png);
}
catch
{
return(string.Empty);
}
}
img.Dispose();
return(thumbUrl);
default:
break;
}
return(string.Empty);
}