input/
after_render.rs

1use crate::{Event, Loop};
2
3/// After render arguments.
4#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Deserialize, Serialize, Hash)]
5pub struct AfterRenderArgs;
6
7/// After rendering and buffers are swapped.
8pub trait AfterRenderEvent: Sized {
9    /// Creates an after render event.
10    fn from_after_render_args(args: &AfterRenderArgs, old_event: &Self) -> Option<Self>;
11    /// Calls closure if this is an after render event.
12    fn after_render<U, F>(&self, f: F) -> Option<U>
13    where
14        F: FnMut(&AfterRenderArgs) -> U;
15    /// Returns after render arguments.
16    fn after_render_args(&self) -> Option<AfterRenderArgs> {
17        self.after_render(|args| *args)
18    }
19}
20
21impl AfterRenderEvent for Event {
22    fn from_after_render_args(args: &AfterRenderArgs, _old_event: &Self) -> Option<Self> {
23        Some(Event::Loop(Loop::AfterRender(*args)))
24    }
25
26    fn after_render<U, F>(&self, mut f: F) -> Option<U>
27    where
28        F: FnMut(&AfterRenderArgs) -> U,
29    {
30        match *self {
31            Event::Loop(Loop::AfterRender(ref args)) => Some(f(args)),
32            _ => None,
33        }
34    }
35}
36
37#[cfg(test)]
38mod tests {
39    use super::*;
40
41    #[test]
42    fn test_input_after_render() {
43        use AfterRenderArgs;
44
45        let e: Event = AfterRenderArgs.into();
46        let x: Option<Event> = AfterRenderEvent::from_after_render_args(&AfterRenderArgs, &e);
47        let y: Option<Event> = x
48            .clone()
49            .unwrap()
50            .after_render(|args| {
51                AfterRenderEvent::from_after_render_args(args, x.as_ref().unwrap())
52            })
53            .unwrap();
54        assert_eq!(x, y);
55    }
56}
input/after_render.rs

input/
after_render.rs
