mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-05 05:58:23 +00:00
212391fc37
[no changelog]
192 lines
4.0 KiB
Rust
192 lines
4.0 KiB
Rust
use core::ops::{Add, Div, Mul, Sub};
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use num_traits::{float::FloatCore, One};
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use crate::{Anim, Fun};
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/// An `Anim` together with the duration that it is intended to be played for.
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///
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/// Explicitly carrying the duration around makes it easier to sequentially
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/// compose animations in some places.
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#[derive(Clone, Debug)]
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pub struct AnimWithDur<F: Fun>(pub Anim<F>, pub F::T);
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impl<F> Anim<F>
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where
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F: Fun,
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{
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/// Tag this animation with the duration that it is intended to be played
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/// for.
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///
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/// Note that using this tagging is completely optional, but it may
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/// make it easier to combine animations sometimes.
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pub fn dur(self, t: F::T) -> AnimWithDur<F> {
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AnimWithDur(self, t)
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}
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}
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impl<'a, V> From<&'a [V]> for AnimWithDur<SliceClosure<'a, V>>
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where
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V: Clone,
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{
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fn from(slice: &'a [V]) -> Self {
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AnimWithDur(Anim(SliceClosure(slice)), slice.len())
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}
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}
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pub fn slice<'a, V>(slice: &'a [V]) -> AnimWithDur<impl Fun<T = usize, V = V> + 'a>
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where
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V: Clone + 'a,
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{
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slice.into()
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}
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#[doc(hidden)]
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pub struct SliceClosure<'a, V>(&'a [V]);
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impl<'a, V> Fun for SliceClosure<'a, V>
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where
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V: Clone,
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{
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type T = usize;
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type V = V;
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fn eval(&self, t: Self::T) -> Self::V {
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self.0[t].clone()
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}
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}
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impl<F> Anim<F>
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where
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F: Fun,
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F::T: Clone + FloatCore,
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{
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pub fn scale_to_dur(self, dur: F::T) -> AnimWithDur<impl Fun<T = F::T, V = F::V>> {
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self.scale_time(F::T::one() / dur).dur(dur)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Clone,
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{
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pub fn as_ref(&self) -> AnimWithDur<&F> {
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AnimWithDur(self.0.as_ref(), self.1.clone())
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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{
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pub fn transform<G, H>(self, h: H) -> AnimWithDur<G>
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where
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G: Fun<T = F::T>,
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H: FnOnce(Anim<F>) -> Anim<G>,
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{
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AnimWithDur(h(self.0), self.1)
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}
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pub fn map<W>(self, f: impl Fn(F::V) -> W) -> AnimWithDur<impl Fun<T = F::T, V = W>> {
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self.transform(move |anim| anim.map(f))
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}
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pub fn dur(self, t: F::T) -> AnimWithDur<F> {
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AnimWithDur(self.0, t)
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}
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}
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impl<'a, T, X, Y, F> AnimWithDur<F>
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where
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T: 'a + Clone,
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X: 'a,
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Y: 'a,
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F: Fun<T = T, V = (X, Y)>,
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{
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pub fn unzip(
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&'a self,
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) -> (
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AnimWithDur<impl Fun<T = F::T, V = X> + 'a>,
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AnimWithDur<impl Fun<T = F::T, V = Y> + 'a>,
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) {
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(
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self.as_ref().transform(|anim| anim.fst()),
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self.as_ref().transform(|anim| anim.snd()),
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)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Copy + PartialOrd + Sub<Output = F::T>,
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{
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pub fn seq<G>(self, next: Anim<G>) -> Anim<impl Fun<T = F::T, V = F::V>>
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where
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G: Fun<T = F::T, V = F::V>,
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{
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self.0.seq(self.1, next)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Copy + PartialOrd + Sub<Output = F::T> + Add<Output = F::T>,
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{
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pub fn seq_with_dur<G>(self, next: AnimWithDur<G>) -> AnimWithDur<impl Fun<T = F::T, V = F::V>>
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where
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G: Fun<T = F::T, V = F::V>,
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{
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let dur = self.1.clone() + next.1;
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AnimWithDur(self.seq(next.0), dur)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Clone + FloatCore,
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{
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pub fn repeat(self) -> Anim<impl Fun<T = F::T, V = F::V>> {
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self.0.repeat(self.1)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Clone + Sub<Output = F::T>,
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{
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pub fn backwards(self) -> AnimWithDur<impl Fun<T = F::T, V = F::V>> {
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AnimWithDur(self.0.backwards(self.1.clone()), self.1)
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}
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}
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impl<F> AnimWithDur<F>
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where
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F: Fun,
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F::T: Clone + Mul<Output = F::T> + Div<Output = F::T>,
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{
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pub fn scale_time(self, t_scale: F::T) -> AnimWithDur<impl Fun<T = F::T, V = F::V>> {
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AnimWithDur(self.0.scale_time(t_scale.clone()), self.1 / t_scale)
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}
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}
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#[macro_export]
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macro_rules! seq_with_dur {
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(
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$expr:expr $(,)?
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) => {
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$expr
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};
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(
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$head:expr,
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$($tail:expr $(,)?)+
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) => {
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$head.seq_with_dur($crate::seq_with_dur!($($tail,)*))
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}
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}
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