public virtual void DeletePicture(Picture picture)
{
if (picture == null)
throw new ArgumentNullException("picture");
//delete thumbs
DeletePictureThumbs(picture);
//delete from database
_pictureRepository.Delete(picture);
}
protected virtual void DeletePictureThumbs(Picture picture)
{
string filter = string.Format("{0}*.*", picture.Id.ToString("0000000"));
var thumbDirectoryPath = GetThumbsDirectory();
string[] currentFiles = System.IO.Directory.GetFiles(thumbDirectoryPath, filter, SearchOption.AllDirectories);
foreach (string currentFileName in currentFiles)
{
var thumbFilePath = GetThumbLocalPath(currentFileName);
if (File.Exists(thumbFilePath))
File.Delete(thumbFilePath);
}
}
protected virtual void DeletePictureOnFileSystem(Picture picture)
{
if (picture == null)
throw new ArgumentNullException("picture");
string lastPart = GetFileExtensionFromMimeType(picture.Mime);
string fileName = string.Format("{0}_0.{1}", picture.Id.ToString("0000000"), lastPart);
string filePath = GetPictureLocalPath(fileName);
if (File.Exists(filePath))
{
File.Delete(filePath);
}
}
public virtual byte[] LoadPictureBinary(Picture picture)
{
if (picture == null)
throw new ArgumentNullException("picture");
return picture.PictureBinary;
}
public virtual Picture InsertPicture(byte[] pictureBinary, string mime, bool isNew)
{
mime = CommonHelper.EnsureNotNull(mime);
mime = CommonHelper.EnsureMaximumLength(mime, 20);
var picture = new Picture() { PictureBinary = pictureBinary,Mime = mime, IsNew = isNew };
_pictureRepository.Insert(picture);
return picture;
}
public virtual string GetThumbLocalPath(Picture picture, int targetSize = 0, bool showDefaultPicture = true)
{
string url = GetPictureUrl(picture, targetSize, showDefaultPicture);
if (String.IsNullOrEmpty(url))
return String.Empty;
else
return GetThumbLocalPath(Path.GetFileName(url));
}
public virtual string GetPictureUrl(Picture picture, int targetSize = 0, bool showDefaultPicture = true)
{
string url = string.Empty;
byte[] pictureBinary = null;
if (picture != null)
pictureBinary = LoadPictureBinary(picture);
if (picture == null || pictureBinary == null || pictureBinary.Length == 0)
{
if (showDefaultPicture)
{
url = GetDefaultPictureUrl(targetSize);
}
return url;
}
string lastPart = GetFileExtensionFromMimeType(picture.Mime);
string thumbFileName;
if (picture.IsNew)
{
DeletePictureThumbs(picture);
picture = UpdatePicture(picture.Id, pictureBinary, picture.Mime, false);
}
lock (s_lock)
{
if (targetSize == 0)
{
thumbFileName = string.Format("{0}.{1}", picture.Id.ToString("0000000"), lastPart);
var thumbFilePath = GetThumbLocalPath(thumbFileName);
if (!File.Exists(thumbFilePath))
{
File.WriteAllBytes(thumbFilePath, pictureBinary);
}
}
else
{
thumbFileName = string.Format("{0}_{1}.{2}", picture.Id.ToString("0000000"), targetSize, lastPart);
var thumbFilePath = GetThumbLocalPath(thumbFileName);
if (!File.Exists(thumbFilePath))
{
using (var stream = new MemoryStream(pictureBinary))
{
Bitmap b = null;
try
{
b = new Bitmap(stream);
}
catch (ArgumentException)
{
// Logger.Error
}
if (b == null)
{
//bitmap could not be loaded for some reasons
return url;
}
var newSize = CalculateDimensions(b.Size, targetSize);
var destStream = new MemoryStream();
ImageBuilder.Current.Build(b, destStream, new ResizeSettings()
{
Width = newSize.Width,
Height = newSize.Height,
Scale = ScaleMode.Both
});
var destBinary = destStream.ToArray();
File.WriteAllBytes(thumbFilePath, destBinary);
b.Dispose();
}
}
}
}
url = GetThumbUrl(thumbFileName);
return url;
}
