/// <summary>
/// Gets a uri to the image which is created from logical uri of museums images
/// </summary>
/// <param name="pUrl">Logical museums image path</param>
/// <param name="pWidth">Desired image width</param>
/// <param name="pHeight">Desired image height</param>
/// <param name="pShouldCrop">Should image be cropped</param>
/// <returns>Returns image URI</returns>
public static Uri GetImageUri(string pUrl, int pWidth = 100, int pHeight = 100, bool pShouldCrop = true)
{
#if !UNITY_METRO
if (string.IsNullOrEmpty(pUrl))
{
return(null);
}
pUrl = pUrl.Replace("\\", "/");
string url = pUrl.StartsWith("http")
? pUrl
: "https://museums.blob.core.windows.net/data" + pUrl.Replace(" ", "%20");
var b64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(url));
var crypto = new CryptoProvider();
var hmac = crypto.CreateHmac(
Encoding.UTF8.GetBytes("laf#lg383ht()/;:O(/)(/)=g987ewt;2twfqw"), Encoding.UTF8.GetBytes(b64));
string shortHash = CleanUpUrl(Convert.ToBase64String(hmac.Take(8).ToArray()));
string mode = pShouldCrop ? "crop" : "max";
string size = string.Empty;
if (pWidth > 0 && pHeight > 0)
{
size = string.Format("&width={0}&height={1}", pWidth, pHeight);
}
string newUrl =
string.Format(
"http://museu.ms/remote.jpg.ashx?mode={3}&format=png{1}&404=no_image.gif&urlb64={0}&hmac={2}",
b64,
size,
shortHash,
mode);
return(new Uri(newUrl));
#else
return(new Uri(pUrl));
#endif
}