var log by remember { mutableStateOf(listOf<String>()) }
Surface(
    color = MaterialTheme.colors.background,
    modifier = Modifier.fillMaxSize().pointerInteropFilter {
        when (it.action) {
            MotionEvent.ACTION_DOWN -> log = log + "Down"
            MotionEvent.ACTION_UP -> log = log + "Up"
            MotionEvent.ACTION_MOVE -> log = log + "Move"
            else -> false
        }
        true
    }
) { Column { for (l in log.takeLast(20)) Text(l) } }