private void toolBar_Click(Object obj, ToolStripItemClickedEventArgs args)
{
string imgKey = args.ClickedItem.ImageKey;
if ("Zoom In".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
ImageZoom(ZoomSize.ZoomIn);
}
else if ("Zoom Out".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
ImageZoom(ZoomSize.ZoomOut);
}
else if ("Rotate Left".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
ImageFlip(FlipDirection.Left);
}
else if ("Rotate Right".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
ImageFlip(FlipDirection.Right);
}
else if ("Save".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
SaveToFile();
}
else if ("Publish".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
Publish();
}
else if ("Print".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
PrintImage();
}
else if ("Cancel".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
CancelOperation();
}
else if ("Exit".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
if (exitDelegate != null)
{
exitDelegate.Invoke();
}
}
else if ("Transmit".Equals(imgKey, StringComparison.CurrentCultureIgnoreCase))
{
if (transDelegate != null)
{
transDelegate.Invoke();
}
}
}
private async Task SendMessageAsync(Func <Stream, Task> writer)
{
var transformIterator = ((IEnumerable <IMiddleware>)_middleware).Reverse().GetEnumerator();
TransmitDelegate transformDelegator = null;
transformDelegator = async transformedStream =>
{
if (transformIterator.MoveNext())
{
using (_logger?.Tracer($"Middleware[{transformIterator.Current.GetType()}].SendAsync(...)"))
{
await transformIterator.Current.SendAsync(transformedStream, transformDelegator).ConfigureAwait(false);
}
}
else
{
await writer(transformedStream).ConfigureAwait(false);
}
};
await _writeLock.WaitAsync();
try
{
using (var writeStream = _clientWebSocket.GetWriteStream())
{
await transformDelegator
.Invoke(writeStream)
.ContinueWith(async task =>
{
// Dispose first before handling return state
transformIterator.Dispose();
// Unwrap and allow the outer exception handler to handle this case
task.WaitAndUnwrapException();
})
.ConfigureAwait(false);
}
}
finally
{
_writeLock.Release();
}
}