public static VirtualAsset CreateInstance(FileInfo file, bool cache, bool reload)
{
if (file == null || !file.Exists)
{
return(Empty);
}
return(VitaNexCore.TryCatchGet(
() =>
{
var hash = CryptoGenerator.GenString(CryptoHashType.MD5, file.FullName);
VirtualAsset a;
lock (_CacheLock)
{
if (!AssetCache.TryGetValue(hash, out a))
{
a = Empty;
}
}
if (reload || IsNullOrEmpty(a))
{
using (var img = new Bitmap(file.FullName, true))
{
a = new VirtualAsset(file, img);
}
}
if (IsNullOrEmpty(a))
{
return Empty;
}
lock (_CacheLock)
{
if (cache)
{
AssetCache[a.Hash] = a;
}
else
{
AssetCache.Remove(a.Hash);
}
if (AssetCache.Count > CacheCapacity)
{
AssetCache.Pop();
}
}
return a;
}));
}
public static bool IsNullOrEmpty(VirtualAsset asset)
{
return(asset == null || asset == Empty || asset.Hash == Empty.Hash || asset.Capacity == 0 || asset.Count == 0);
}
public bool Equals(VirtualAsset other)
{
return(!ReferenceEquals(other, null) && Hash == other.Hash);
}
