Windows support

[parro-it]

I just merged Windows branch into master.

From now on, libui-node support Windows OS too!

After many attempts using various methods, I finally implemented the event loop using a simple libuv timer.

Linux and macOS got a better event loop implementation, with a background blocking thread that check for any pending GUI event and when there are one or more, it run a callback in main js thread that dispatch all events.

It appear that on Windows we have no way to check for the presence of pending events on other threads, so I revert to checking them in main thread, once every 100 ms.

Anyway, CPU usage appear to be lower than 1% on my machine. So at least by now, I choose to go on with this implementation. Maybe we can find a better way in future.

Please test it and report any issue you'll find, thanks!

[tracker1]

You should run updates every 16ms to hit 60fps...

[PaulBGD]

Or rather, run them to match the screen's refresh rate.

[PaulBGD]

Yeah after running the examples, you can definitely feel the lag on a 60hz monitor. I can't imagine how a 144hz monitor would feel.

[parro-it]

Ok, thank you, I will shorten the timeout to 16ms.

[parro-it]

Event loop is completely implemented on 0.1.0 and should be more performant on Windows.