private async void SetColor(LifxNet.LightBulb bulb, ushort?hue, ushort?saturation, ushort?brightness)
{
if (client == null || bulb == null)
{
return;
}
//Is a task already running? This avoids updating too often.
//Come back and execute last call when currently running operation is complete
if (pendingUpdateColor != null)
{
pendingUpdateColorAction = () => SetColor(bulb, hue, saturation, brightness);
return;
}
this.hue = hue.HasValue ? hue.Value : this.hue;
this.saturation = saturation.HasValue ? saturation.Value : this.saturation;
var b = brightness.HasValue ? brightness.Value : (UInt16)brightnessSlider.Value;
var setColorTask = client.SetColorAsync(bulb, this.hue, this.saturation, b, 2700, TimeSpan.Zero);
var throttleTask = Task.Delay(50); //Ensure task takes minimum 50 ms (no more than 20 messages per second)
pendingUpdateColor = Task.WhenAll(new Task[] { setColorTask, throttleTask });
try
{
Task timeoutTask = Task.Delay(2000);
await Task.WhenAny(new Task[] { timeoutTask, pendingUpdateColor });
if (!pendingUpdateColor.IsCompleted)
{
//timeout
}
}
catch { } //ignore errors (usually timeout)
pendingUpdateColor = null;
if (pendingUpdateColorAction != null) //if a pending action is waiting, run it now;
{
var a = pendingUpdateColorAction;
pendingUpdateColorAction = null;
a();
}
}
