public XlsPicture GetByImage(Image image)
{
if (image == null)
{
return(null);
}
XlsPicture pic;
if (ImageHash.TryGetValue(image, out pic))
{
return(pic);
}
byte[] data = ByteImageConverter.ToByteArray(image, ImageFormat.Png);
foreach (XlsPicture picture in this)
{
byte[] bytes = picture.GetImageBytes();
if (bytes.Length == data.Length)
{
int i;
for (i = 0; i < data.Length; i++)
{
if (bytes[i] != data[i])
{
break;
}
}
if (i == data.Length)
{
return(picture);
}
}
}
return(AddNew(image));
}
public static byte[] GetImageBytes(Image image)
{
if (image == null)
{
return new byte[] {}
}
;
HashObj hashObj = HashObj.GetObj(image);
byte[] bytes = (byte[])imageHT[hashObj];
if (bytes == null)
{
bytes = ByteImageConverter.ToByteArray(image, ImageFormat.Png);
imageHT[hashObj] = bytes;
}
return(bytes);
}