use crate::{Event, Loop};
#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize, Hash)]
pub struct AfterRenderArgs;
pub trait AfterRenderEvent: Sized {
fn from_after_render_args(args: &AfterRenderArgs, old_event: &Self) -> Option<Self>;
fn after_render<U, F>(&self, f: F) -> Option<U>
where
F: FnMut(&AfterRenderArgs) -> U;
fn after_render_args(&self) -> Option<AfterRenderArgs> {
self.after_render(|args| *args)
}
}
impl AfterRenderEvent for Event {
fn from_after_render_args(args: &AfterRenderArgs, _old_event: &Self) -> Option<Self> {
Some(Event::Loop(Loop::AfterRender(*args)))
}
fn after_render<U, F>(&self, mut f: F) -> Option<U>
where
F: FnMut(&AfterRenderArgs) -> U,
{
match *self {
Event::Loop(Loop::AfterRender(ref args)) => Some(f(args)),
_ => None,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_input_after_render() {
use AfterRenderArgs;
let e: Event = AfterRenderArgs.into();
let x: Option<Event> = AfterRenderEvent::from_after_render_args(&AfterRenderArgs, &e);
let y: Option<Event> = x
.clone()
.unwrap()
.after_render(|args| {
AfterRenderEvent::from_after_render_args(args, x.as_ref().unwrap())
})
.unwrap();
assert_eq!(x, y);
}
}