private static void DownloadImageAsync(ImageSequence imageSequenceToLoadInto, string uriToLoad, Action doneLoading, ImageSequence asyncImageSequence, string pngFileName, string gifFileName)
{
WebClient client = new WebClient();
client.DownloadDataCompleted += (object sender, DownloadDataCompletedEventArgs e) =>
{
try // if we get a bad result we can get a target invocation exception. In that case just don't show anything
{
Task.Run(() =>
{
// scale the loaded image to the size of the target image
byte[] raw = e.Result;
Stream stream = new MemoryStream(raw);
lock (locker)
{
StaticData.Instance.LoadImageSequenceData(stream, asyncImageSequence);
}
if (asyncImageSequence.Frames.Count == 1)
{
// save the as png
lock (locker)
{
if (!File.Exists(pngFileName))
{
ImageIO.SaveImageData(pngFileName, asyncImageSequence.Frames[0]);
}
}
}
else // save original stream as gif
{
using (var writter = new FileStream(gifFileName, FileMode.Create))
{
stream.Position = 0;
stream.CopyTo(writter);
}
}
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
doneLoading?.Invoke();
});
});
}
catch
{
}
};
try
{
client.DownloadDataAsync(new Uri(uriToLoad));
}
catch
{
}
}
/// <summary>
/// Download an image from the web into the specified ImageSequence
/// </summary>
/// <param name="uri"></param>
public static void RetrieveImageSquenceAsync(ImageSequence imageSequenceToLoadInto,
string uriToLoad,
Action doneLoading = null)
{
var asyncImageSequence = new ImageSequence();
var longHash = uriToLoad.GetLongHashCode();
var pngFileName = ApplicationController.CacheablePath("Images", longHash.ToString() + ".png");
var gifFileName = ApplicationController.CacheablePath("Images", longHash.ToString() + ".gif");
if (File.Exists(pngFileName))
{
try
{
Task.Run(() =>
{
AggContext.StaticData.LoadImageSequenceData(new StreamReader(pngFileName).BaseStream, asyncImageSequence);
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
doneLoading?.Invoke();
});
});
return;
}
catch
{
}
}
else if (File.Exists(gifFileName))
{
Task.Run(() =>
{
try
{
AggContext.StaticData.LoadImageSequenceData(new StreamReader(gifFileName).BaseStream, asyncImageSequence);
if (asyncImageSequence.NumFrames > 0)
{
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
doneLoading?.Invoke();
});
}
else
{
DownloadImageAsync(imageSequenceToLoadInto, uriToLoad, doneLoading, asyncImageSequence, pngFileName, gifFileName);
}
}
catch
{
DownloadImageAsync(imageSequenceToLoadInto, uriToLoad, doneLoading, asyncImageSequence, pngFileName, gifFileName);
}
});
return;
}
DownloadImageAsync(imageSequenceToLoadInto, uriToLoad, doneLoading, asyncImageSequence, pngFileName, gifFileName);
}
/// <summary>
/// Download an image from the web into the specified ImageSequence
/// </summary>
/// <param name="uri"></param>
public static void RetrieveImageSquenceAsync(ImageSequence imageSequenceToLoadInto, string uriToLoad)
{
var asyncImageSequence = new ImageSequence();
var longHash = uriToLoad.GetLongHashCode();
var pngFileName = ApplicationController.CacheablePath("Images", longHash.ToString() + ".png");
var gifFileName = ApplicationController.CacheablePath("Images", longHash.ToString() + ".gif");
if (File.Exists(pngFileName))
{
try
{
Task.Run(() =>
{
AggContext.StaticData.LoadImageSequenceData(new StreamReader(pngFileName).BaseStream, asyncImageSequence);
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
});
});
return;
}
catch
{
}
}
else if (File.Exists(gifFileName))
{
try
{
Task.Run(() =>
{
AggContext.StaticData.LoadImageSequenceData(new StreamReader(gifFileName).BaseStream, asyncImageSequence);
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
});
});
return;
}
catch
{
}
}
WebClient client = new WebClient();
client.DownloadDataCompleted += (object sender, DownloadDataCompletedEventArgs e) =>
{
try // if we get a bad result we can get a target invocation exception. In that case just don't show anything
{
Task.Run(() =>
{
// scale the loaded image to the size of the target image
byte[] raw = e.Result;
Stream stream = new MemoryStream(raw);
AggContext.StaticData.LoadImageSequenceData(stream, asyncImageSequence);
if (asyncImageSequence.Frames.Count == 1)
{
// save the as png
AggContext.ImageIO.SaveImageData(pngFileName, asyncImageSequence.Frames[0]);
}
else // save original stream as gif
{
using (var writter = new FileStream(gifFileName, FileMode.Create))
{
stream.Position = 0;
stream.CopyTo(writter);
}
}
UiThread.RunOnIdle(() =>
{
imageSequenceToLoadInto.Copy(asyncImageSequence);
imageSequenceToLoadInto.Invalidate();
});
});
}
catch
{
}
};
try
{
client.DownloadDataAsync(new Uri(uriToLoad));
}
catch
{
}
}
