public byte[] Fetch(ImageCriteria criteria)
{
var value = _cache.Get <byte[]>(criteria.ToHash());
if (value == null)
{
var image = _source.Fetch(criteria);
_cache.Set(criteria.ToHash(), image, new MemoryCacheEntryOptions()
{
Size = image.Length
});
return(image);
}
return(value);
}
public byte[] Fetch(ImageCriteria criteria)
{
//check if the image is there
var file = Path.Combine(_imageDirectory, criteria.File);
if (!File.Exists(file))
{
throw new ArgumentException("Invalid file provided [" + criteria.File + "]");
}
var imageFormat = GetFormat(criteria.Format);
using (Image image = Image.Load(file))
{
image.Mutate(context =>
{
if (criteria.Width != 0 && criteria.Height != 0)
{
context = context.Resize(criteria.Width, criteria.Height);
}
if (criteria.ShouldAddWatermark())
{
context = ApplyWaterMark(context, criteria.Watermark);
}
if (criteria.ShouldAddBackgroundColour())
{
context = ApplyBackgroundColor(context, criteria.RGBBackgroundColour);
}
});
using (var ms = new MemoryStream())
{
image.Save(ms, imageFormat);
return(ms.ToArray());
}
}
}