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use std::time::{SystemTime, Duration};
#[derive(PartialEq)]
pub enum State {
Idle,
Active,
Inactive,
}
pub struct Timer {
pub state: State,
time: SystemTime,
result: Duration,
}
impl Timer {
pub fn new() -> Timer {
Timer {
state: State::Inactive,
time: SystemTime::now(),
result: Duration::new(0, 0),
}
}
pub fn start(&mut self) {
self.time = SystemTime::now();
self.state = State::Active;
}
pub fn stop(&mut self) {
self.result = self.time.elapsed().unwrap();
self.state = State::Inactive;
}
pub fn idle(&mut self) {
self.state = State::Idle;
}
}
use std::fmt;
impl fmt::Display for Timer {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let current = if self.state == State::Active {
self.time.elapsed().unwrap()
} else {
self.result
}.as_millis();
write!(f, "{}.{}", current / 1000, current % 1000)
}
}
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