public static Image GetImageFromCache(string imageFileName, string email, int cacheDays,
int imageSize, string imageCachePath, FallBackService fallBack)
{
try
{
if (cache == null)
{
cache = new DirectoryImageCache(imageCachePath); //or: new IsolatedStorageImageCache();
}
// If the user image is not cached yet, download it from gravatar and store it in the isolatedStorage
if (!cache.FileIsCached(imageFileName) ||
cache.FileIsExpired(imageFileName, cacheDays))
{
return(null);
}
if (cache.FileIsCached(imageFileName))
{
return(cache.LoadImageFromCache(imageFileName, null));
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
return(null);
}
public static void GetImageFromGravatar(string imageFileName, string email, int authorImageSize, FallBackService fallBack)
{
try
{
var baseUrl = String.Concat("http://www.gravatar.com/avatar/{0}?d=identicon&s=",
authorImageSize, "&r=g");
if (fallBack == FallBackService.Identicon)
baseUrl += "&d=identicon";
if (fallBack == FallBackService.MonsterId)
baseUrl += "&d=monsterid";
if (fallBack == FallBackService.Wavatar)
baseUrl += "&d=wavatar";
//hash the email address
var emailHash = MD5.CalcMD5(email.ToLower());
//format our url to the Gravatar
var imageUrl = String.Format(baseUrl, emailHash);
var webClient = new WebClient { Proxy = WebRequest.DefaultWebProxy };
webClient.Proxy.Credentials = CredentialCache.DefaultCredentials;
var imageStream = webClient.OpenRead(imageUrl);
cache.CacheImage(imageFileName, imageStream);
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public static void LoadCachedImage(string imageFileName, string email, Bitmap defaultBitmap, int cacheDays,
int imageSize, string imageCachePath, Action<Image> onChangedImage,
FallBackService fallBack)
{
try
{
if (cache == null)
cache = new DirectoryImageCache(imageCachePath); //or: new IsolatedStorageImageCache();
// If the user image is not cached yet, download it from gravatar and store it in the isolatedStorage
if (!cache.FileIsCached(imageFileName) ||
cache.FileIsExpired(imageFileName, cacheDays))
{
onChangedImage(defaultBitmap);
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
if (cache.FileIsCached(imageFileName))
{
onChangedImage(cache.LoadImageFromCache(imageFileName,
defaultBitmap));
}
else
{
onChangedImage(defaultBitmap);
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
/// <summary>
/// Update the Gravatar anytime an attribute is changed
/// </summary>
private void UpdateGravatar()
{
// resize our control (I'm not using AutoSize for a reason)
Size = new Size(Settings.AuthorImageSize, Settings.AuthorImageSize);
_gravatarImg.Size = new Size(Settings.AuthorImageSize, Settings.AuthorImageSize);
if (!Settings.ShowAuthorGravatar || string.IsNullOrEmpty(Email))
{
RefreshImage(Resources.User);
return;
}
FallBackService gravatarFallBack = FallBackService.Identicon;
try
{
gravatarFallBack = (FallBackService)Enum.Parse(typeof(FallBackService), Settings.GravatarFallbackService);
}
catch
{
Settings.GravatarFallbackService = gravatarFallBack.ToString();
}
ThreadPool.QueueUserWorkItem(o =>
GravatarService.LoadCachedImage(
ImageFileName,
Email,
Resources.User,
Settings.AuthorImageCacheDays,
Settings.AuthorImageSize,
Settings.GravatarCachePath,
RefreshImage,
gravatarFallBack));
}
public static void CacheImage(string imageFileName, string email, int imageSize,
FallBackService fallBack)
{
try
{
if (cache == null)
{
return;
}
if (IsValidEmail(email) && !cache.FileIsCached(imageFileName))
{
//Lock added to make sure gravatar doesn't block this ip..
lock (gravatarServiceLock)
{
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public static void LoadCachedImage(string imageFileName, string email, Bitmap defaultBitmap, int cacheDays,
int imageSize, string imageCachePath, Action <Image> onChangedImage,
FallBackService fallBack)
{
try
{
if (cache == null)
{
cache = new DirectoryImageCache(imageCachePath); //or: new IsolatedStorageImageCache();
}
// If the user image is not cached yet, download it from gravatar and store it in the isolatedStorage
if (!cache.FileIsCached(imageFileName) ||
cache.FileIsExpired(imageFileName, cacheDays))
{
onChangedImage(defaultBitmap);
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
if (cache.FileIsCached(imageFileName))
{
onChangedImage(cache.LoadImageFromCache(imageFileName,
defaultBitmap));
}
else
{
onChangedImage(defaultBitmap);
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public void CacheAvatar(string email)
{
FallBackService gravatarFallBack = FallBackService.Identicon;
try
{
gravatarFallBack =
(FallBackService)Enum.Parse(typeof(FallBackService), Settings.GravatarFallbackService);
}
catch
{
Settings.GravatarFallbackService = gravatarFallBack.ToString();
}
GravatarService.CacheImage(email + ".png", email, Settings.AuthorImageSize,
gravatarFallBack);
}
public static void LoadCachedImage(string imageFileName, string email, Bitmap defaultBitmap, int cacheDays,
int imageSize, string imageCachePath, Action <Image> onChangedImage,
FallBackService fallBack)
{
Image image = GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack);
try
{
if (image == null)
{
onChangedImage(defaultBitmap);
//Lock added to make sure gravatar doesn't block this ip..
lock (gravatarServiceLock)
{
if (GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack) == null)
{
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
}
}
image = GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack);
if (image != null)
{
onChangedImage(image);
}
else
{
onChangedImage(defaultBitmap);
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public static void GetImageFromGravatar(string imageFileName, string email, int authorImageSize, FallBackService fallBack)
{
try
{
var imageUrl = BuildGravatarUrl(email,
authorImageSize,
false,
Rating.G,
fallBack);
var webClient = new WebClient { Proxy = WebRequest.DefaultWebProxy };
webClient.Proxy.Credentials = CredentialCache.DefaultCredentials;
var imageStream = webClient.OpenRead(imageUrl);
cache.CacheImage(imageFileName, imageStream);
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
/// <summary>
/// Builds a <see cref="System.Uri"/> corresponding to a given email address.
/// </summary>
/// <param name="email">The email address for which to build the <see cref="System.Uri"/>.</param>
/// <param name="size">The size of the image to request. The default is 32.</param>
/// <param name="useHttps">Indicates whether or not the request should be performed over Secure HTTP.</param>
/// <param name="rating">The mazimum rating of the returned image.</param>
/// <param name="fallBack">The Gravatar service that will be used for fall-back.</param>
/// <returns>The constructed <see cref="System.Uri"/>.</returns>
private static Uri BuildGravatarUrl(string email, int size, bool useHttps, Rating rating, FallBackService fallBack)
{
var builder = new UriBuilder("http://www.gravatar.com/avatar/");
if (useHttps)
{
builder.Scheme = "https";
}
builder.Path += HashEmail(email);
string d;
if (!fallBackStrings.TryGetValue(fallBack, out d))
{
d = "404";
}
var query = string.Format("s={0}&r={1}&d={2}",
size.ToString(),
rating.ToString().ToLowerInvariant(),
d);
builder.Query = query;
return builder.Uri;
}
public static void LoadCachedImage(string imageFileName, string email, Bitmap defaultBitmap, int cacheDays,
int imageSize, string imageCachePath, Action<Image> onChangedImage,
FallBackService fallBack)
{
Image image = GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack);
try
{
if (image == null)
{
onChangedImage(defaultBitmap);
//Lock added to make sure gravatar doesn't block this ip..
lock (gravatarServiceLock)
{
if (GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack) == null)
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
}
image = GetImageFromCache(imageFileName, email, cacheDays, imageSize, imageCachePath, fallBack);
if (image != null)
{
onChangedImage(image);
}
else
{
onChangedImage(defaultBitmap);
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public static void CacheImage(string imageFileName, string email, int imageSize,
FallBackService fallBack)
{
try
{
if (cache == null)
return;
if (IsValidEmail(email) && !cache.FileIsCached(imageFileName))
{
//Lock added to make sure gravatar doesn't block this ip..
lock (gravatarServiceLock)
{
GetImageFromGravatar(imageFileName, email, imageSize, fallBack);
}
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
public static Image GetImageFromCache(string imageFileName, string email, int cacheDays,
int imageSize, string imageCachePath, FallBackService fallBack)
{
try
{
if (cache == null)
cache = new DirectoryImageCache(imageCachePath); //or: new IsolatedStorageImageCache();
// If the user image is not cached yet, download it from gravatar and store it in the isolatedStorage
if (!cache.FileIsCached(imageFileName) ||
cache.FileIsExpired(imageFileName, cacheDays))
{
return null;
}
if (cache.FileIsCached(imageFileName))
{
return cache.LoadImageFromCache(imageFileName, null);
}
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
return null;
}
public static void GetImageFromGravatar(string imageFileName, string email, int authorImageSize, FallBackService fallBack)
{
try
{
var imageUrl = BuildGravatarUrl(email,
authorImageSize,
false,
Rating.G,
fallBack);
var webClient = new WebClient {
Proxy = WebRequest.DefaultWebProxy
};
webClient.Proxy.Credentials = CredentialCache.DefaultCredentials;
var imageStream = webClient.OpenRead(imageUrl);
cache.CacheImage(imageFileName, imageStream);
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
/// <summary>
/// Builds a <see cref="System.Uri"/> corresponding to a given email address.
/// </summary>
/// <param name="email">The email address for which to build the <see cref="System.Uri"/>.</param>
/// <param name="size">The size of the image to request. The default is 32.</param>
/// <param name="useHttps">Indicates whether or not the request should be performed over Secure HTTP.</param>
/// <param name="rating">The mazimum rating of the returned image.</param>
/// <param name="fallBack">The Gravatar service that will be used for fall-back.</param>
/// <returns>The constructed <see cref="System.Uri"/>.</returns>
private static Uri BuildGravatarUrl(string email, int size, bool useHttps, Rating rating, FallBackService fallBack)
{
var builder = new UriBuilder("http://www.gravatar.com/avatar/");
if (useHttps)
{
builder.Scheme = "https";
}
builder.Path += HashEmail(email);
string d;
if (!fallBackStrings.TryGetValue(fallBack, out d))
{
d = "404";
}
var query = string.Format("s={0}&r={1}&d={2}",
size,
rating.ToString().ToLowerInvariant(),
d);
builder.Query = query;
return(builder.Uri);
}
public static void GetImageFromGravatar(string imageFileName, string email, int authorImageSize, FallBackService fallBack)
{
try
{
var baseUrl = String.Concat("http://www.gravatar.com/avatar/{0}?d=identicon&s=",
authorImageSize, "&r=g");
if (fallBack == FallBackService.Identicon)
{
baseUrl += "&d=identicon";
}
if (fallBack == FallBackService.MonsterId)
{
baseUrl += "&d=monsterid";
}
if (fallBack == FallBackService.Wavatar)
{
baseUrl += "&d=wavatar";
}
//hash the email address
var emailHash = MD5.CalcMD5(email.ToLower());
//format our url to the Gravatar
var imageUrl = String.Format(baseUrl, emailHash);
var webClient = new WebClient {
Proxy = WebRequest.DefaultWebProxy
};
webClient.Proxy.Credentials = CredentialCache.DefaultCredentials;
var imageStream = webClient.OpenRead(imageUrl);
cache.CacheImage(imageFileName, imageStream);
}
catch (Exception ex)
{
//catch IO errors
Trace.WriteLine(ex.Message);
}
}
