private void ThumbnailBuilt(object sender, ThumbnailBuiltEventArgs e)
{
ThumbnailData thumbnailData = null;
if (e.ThumbnailStream != null)
{
var stream = new MemoryStream();
e.ThumbnailStream.CopyTo(stream);
thumbnailData = new BitmapThumbnailData(e.ThumbnailId, stream);
}
if (e.Result != ThumbnailBuildResult.Cancelled)
{
ThumbnailCompleted?.Invoke(this, new ThumbnailCompletedArgs(e.AssetId, thumbnailData));
}
lock (hashLock)
{
ThumbnailContinuation thumbnailContinuation;
thumbnailsInProgressAndContinuation.TryGetValue(e.AssetId, out thumbnailContinuation);
thumbnailsInProgressAndContinuation.Remove(e.AssetId);
// Check if same asset has been requested again while it was compiling
if (thumbnailContinuation != null)
{
var priority = thumbnailContinuation.Position == QueuePosition.First ? firstPriority-- : lastPriority++;
var node = assetBuilderService.PushBuildUnit(new ThumbnailAssetBuildUnit(thumbnailContinuation.UpdatedAssetToRecompile, currentGameSettings, this, priority));
thumbnailQueueHash.Add(thumbnailContinuation.UpdatedAssetToRecompile, node);
}
}
}
/// <summary>
/// Notify that the thumbnail has just been built. This method will raise the <see cref="ThumbnailBuilt"/> event.
/// </summary>
/// <param name="assetItem">The asset item whose thumbnail has been built.</param>
/// <param name="result">A <see cref="ThumbnailBuildResult"/> value indicating whether the build was successful, failed or cancelled.</param>
/// <param name="changed">A boolean indicating whether the thumbnal has changed since the last generation.</param>
/// <param name="thumbnailStream">A stream to the thumbnail image.</param>
/// <param name="thumbnailHash"></param>
internal void NotifyThumbnailBuilt(AssetItem assetItem, ThumbnailBuildResult result, bool changed, Stream thumbnailStream, ObjectId thumbnailHash)
{
try
{
// TODO: this lock seems to be useless now, check if we can safely remove it
Monitor.Enter(thumbnailCounterLock);
var handler = ThumbnailBuilt;
if (handler != null)
{
// create the thumbnail build event arguments
var thumbnailBuiltArgs = new ThumbnailBuiltEventArgs
{
AssetId = assetItem.Id,
Url = assetItem.Location,
Result = result,
ThumbnailChanged = changed
};
Monitor.Exit(thumbnailCounterLock);
// Open the image data stream if the build succeeded
if (thumbnailBuiltArgs.Result == ThumbnailBuildResult.Succeeded)
{
thumbnailBuiltArgs.ThumbnailStream = thumbnailStream;
thumbnailBuiltArgs.ThumbnailId = thumbnailHash;
}
else if (BuildFailedThumbnail != null)
{
thumbnailBuiltArgs.ThumbnailStream = new MemoryStream(BuildFailedThumbnail.Result);
}
handler(assetItem, thumbnailBuiltArgs);
}
}
finally
{
if (Monitor.IsEntered(thumbnailCounterLock))
{
Monitor.Exit(thumbnailCounterLock);
}
}
}