bool TryGetThumb(WebData webData, MDBImage img, string fileName)
{
try
{
//try to load thumb
var hash = Base32.Safe.Encode(Hash.FromString(Hash.Type.SHA256, fileName));
string thumbFileName = FileSystem.Combine(mdb.CacheFolder, "Thumbs", hash + ".jpg");
var mime = MimeTypes.FromExtension(".jpg");
if (File.Exists(thumbFileName))
{
try
{
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), File.ReadAllBytes(thumbFileName), mime);
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch { /*file access error, writing in progress ?, wait for lock and retry*/ }
}
//wait until last thumb generation is finished
byte[] data;
lock (ThumbCreateSyncRoot)
{
//do a second check after lock is released...
if (File.Exists(thumbFileName))
{
try
{
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), File.ReadAllBytes(thumbFileName), mime);
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch { /*file access error, recreate thumb*/ }
}
//generate thumb
using (var bmp = Bitmap32.FromFile(fileName))
{
data = WebImage.RenderThumb(bmp, thumbFileName);
}
}
webData.Answer = WebAnswer.Raw(webData.Request, WebMessage.Create(webData.Method, thumbFileName), data, mime);
webData.Answer.AllowCompression = false;
webData.Answer.SetCacheTime(TimeSpan.FromDays(1));
return(true);
}
catch (Exception ex)
{
this.LogError(ex, "Could not load / create thumb for {0}", fileName);
}
return(false);
}
IList <Item> LoadImages(string path)
{
var results = new List <Item>();
foreach (string file in Directory.GetFiles(path, "*.png"))
{
Trace.TraceInformation("Load {0}", file);
var bitmap = Bitmap32.FromFile(file);
results.Add(new Item()
{
FileName = file, Bitmap = bitmap
});
}
return(results);
}
public void LoadImage(string fileName)
{
if (fileName != imageFileName)
{
try
{
using (Bitmap32 image = Bitmap32.FromFile(fileName))
{
Sprite.LoadTexture(image);
}
imageFileName = fileName;
}
catch (Exception ex)
{
Trace.TraceError("Error on loading image: " + ex.Message);
}
}
}