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use super::{from_uint_slice, from_uint_slice_mut, into_uint_slice, into_uint_slice_mut, UintCast};
/// Trait for casting a reference to a collection of colors into a reference to
/// a collection of unsigned integers without copying.
///
/// This trait is meant as a more convenient alternative to the free functions
/// in [`cast`][crate::cast], to allow method chaining among other things.
///
/// ## Examples
///
/// ```
/// use palette::{cast::AsUints, rgb::PackedArgb, Srgba};
///
/// let array: [PackedArgb; 2] = [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
/// let slice: &[PackedArgb] = &[
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
/// let vec: Vec<PackedArgb> = vec![
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
///
/// assert_eq!(array.as_uints(), &[0xFF17C64C, 0xFF5D12D6]);
/// assert_eq!(slice.as_uints(), &[0xFF17C64C, 0xFF5D12D6]);
/// assert_eq!(vec.as_uints(), &[0xFF17C64C, 0xFF5D12D6]);
/// ```
pub trait AsUints<A: ?Sized> {
/// Cast this collection of colors into a collection of unsigned integers.
fn as_uints(&self) -> &A;
}
/// Trait for casting a mutable reference to a collection of colors into a
/// mutable reference to a collection of unsigned integers without copying.
///
/// This trait is meant as a more convenient alternative to the free functions
/// in [`cast`][crate::cast], to allow method chaining among other things.
///
/// ## Examples
///
/// ```
/// use palette::{cast::AsUintsMut, rgb::PackedArgb, Srgba};
///
/// let mut array: [PackedArgb; 2] = [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
/// let slice_mut: &mut [PackedArgb] = &mut [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
/// let mut vec: Vec<PackedArgb> = vec![
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ];
///
/// assert_eq!(array.as_uints_mut(), &mut [0xFF17C64C, 0xFF5D12D6]);
/// assert_eq!(slice_mut.as_uints_mut(), &mut [0xFF17C64C, 0xFF5D12D6]);
/// assert_eq!(vec.as_uints_mut(), &mut [0xFF17C64C, 0xFF5D12D6]);
/// ```
pub trait AsUintsMut<A: ?Sized> {
/// Cast this collection of colors into a mutable collection of unsigned integers.
fn as_uints_mut(&mut self) -> &mut A;
}
macro_rules! impl_as_uints {
($($owning:ty $(where ($($ty_input:tt)+))?),*) => {
$(
impl<'a, C $(, $($ty_input)+)?> AsUints<[C::Uint]> for $owning
where
C: UintCast,
{
#[inline]
fn as_uints(&self) -> &[C::Uint] {
into_uint_slice(self.as_ref())
}
}
impl<'a, C $(, $($ty_input)+)?> AsUintsMut<[C::Uint]> for $owning
where
C: UintCast,
{
#[inline]
fn as_uints_mut(&mut self) -> &mut [C::Uint] {
into_uint_slice_mut(self.as_mut())
}
}
)*
};
}
impl_as_uints!([C], [C; N] where (const N: usize));
#[cfg(feature = "alloc")]
impl_as_uints!(alloc::boxed::Box<[C]>, alloc::vec::Vec<C>);
/// Trait for casting a reference to a collection of unsigned integers into a
/// reference to a collection of colors without copying.
///
/// This trait is meant as a more convenient alternative to the free functions
/// in [`cast`][crate::cast], to allow method chaining among other things.
///
/// ## Examples
///
/// ```
/// use palette::{cast::UintsAs, rgb::PackedArgb, Srgba};
///
/// let array: [_; 2] = [0xFF17C64C, 0xFF5D12D6];
/// let slice: &[_] = &[0xFF17C64C, 0xFF5D12D6];
/// let vec: Vec<_> = vec![0xFF17C64C, 0xFF5D12D6];
///
/// let colors: &[PackedArgb] = array.uints_as();
/// assert_eq!(
/// colors,
/// &[
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
///
/// let colors: &[PackedArgb] = slice.uints_as();
/// assert_eq!(
/// colors,
/// &[
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
///
/// let colors: &[PackedArgb] = vec.uints_as();
/// assert_eq!(
/// colors,
/// &[
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
/// ```
pub trait UintsAs<C: ?Sized> {
/// Cast this collection of unsigned integers into a collection of colors.
fn uints_as(&self) -> &C;
}
/// Trait for casting a mutable reference to a collection of unsigned integers
/// into a mutable reference to a collection of colors without copying.
///
/// This trait is meant as a more convenient alternative to the free functions
/// in [`cast`][crate::cast], to allow method chaining among other things.
///
/// ## Examples
///
/// ```
/// use palette::{cast::UintsAsMut, rgb::PackedArgb, Srgba};
///
/// let mut array: [_; 2] = [0xFF17C64C, 0xFF5D12D6];
/// let slice_mut: &mut [_] = &mut [0xFF17C64C, 0xFF5D12D6];
/// let mut vec: Vec<_> = vec![0xFF17C64C, 0xFF5D12D6];
///
/// let colors: &mut [PackedArgb] = array.uints_as_mut();
/// assert_eq!(
/// colors,
/// &mut [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
///
/// let colors: &mut [PackedArgb] = slice_mut.uints_as_mut();
/// assert_eq!(
/// colors,
/// &mut [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
///
/// let colors: &mut [PackedArgb] = vec.uints_as_mut();
/// assert_eq!(
/// colors,
/// &mut [
/// Srgba::new(0x17, 0xC6, 0x4C, 0xFF).into(),
/// Srgba::new(0x5D, 0x12, 0xD6, 0xFF).into()
/// ]
/// );
/// ```
pub trait UintsAsMut<C: ?Sized> {
/// Cast this collection of unsigned integers into a mutable collection of colors.
fn uints_as_mut(&mut self) -> &mut C;
}
macro_rules! impl_uints_as {
($($owning:ty $(where ($($ty_input:tt)+))?),*) => {
$(
impl<'a, C $(, $($ty_input)+)?> UintsAs<[C]> for $owning
where
C: UintCast,
{
#[inline]
fn uints_as(&self) -> &[C] {
from_uint_slice(self.as_ref())
}
}
impl<'a, C $(, $($ty_input)+)?> UintsAsMut<[C]> for $owning
where
C: UintCast,
{
#[inline]
fn uints_as_mut(&mut self) -> &mut [C] {
from_uint_slice_mut(self.as_mut())
}
}
)*
};
}
impl_uints_as!([C::Uint], [C::Uint; N] where (const N: usize));
#[cfg(feature = "alloc")]
impl_uints_as!(alloc::boxed::Box<[C::Uint]>, alloc::vec::Vec<C::Uint>);
#[cfg(test)]
mod test {
use crate::{rgb::PackedRgba, Srgba};
use super::{AsUints, AsUintsMut, UintsAs, UintsAsMut};
#[test]
fn as_uints() {
let slice: &[PackedRgba] = &[Srgba::new(1, 2, 3, 4).into(), Srgba::new(5, 6, 7, 8).into()];
let slice_mut: &mut [PackedRgba] =
&mut [Srgba::new(1, 2, 3, 4).into(), Srgba::new(5, 6, 7, 8).into()];
let mut slice_box: Box<[PackedRgba]> =
vec![Srgba::new(1, 2, 3, 4).into(), Srgba::new(5, 6, 7, 8).into()].into_boxed_slice();
let mut vec: Vec<PackedRgba> =
vec![Srgba::new(1, 2, 3, 4).into(), Srgba::new(5, 6, 7, 8).into()];
let mut array: [PackedRgba; 2] =
[Srgba::new(1, 2, 3, 4).into(), Srgba::new(5, 6, 7, 8).into()];
let _: &[u32] = slice.as_uints();
let _: &[u32] = slice_box.as_uints();
let _: &[u32] = vec.as_uints();
let _: &[u32] = array.as_uints();
let _: &mut [u32] = slice_mut.as_uints_mut();
let _: &mut [u32] = slice_box.as_uints_mut();
let _: &mut [u32] = vec.as_uints_mut();
let _: &mut [u32] = array.as_uints_mut();
}
#[test]
fn uints_as() {
let slice: &[u32] = &[0x01020304, 0x05060708];
let slice_mut: &mut [u32] = &mut [0x01020304, 0x05060708];
let mut slice_box: Box<[u32]> = vec![0x01020304, 0x05060708].into_boxed_slice();
let mut vec: Vec<u32> = vec![0x01020304, 0x05060708];
let mut array: [u32; 2] = [0x01020304, 0x05060708];
let _: &[PackedRgba] = slice.uints_as();
let _: &[PackedRgba] = slice_box.uints_as();
let _: &[PackedRgba] = vec.uints_as();
let _: &[PackedRgba] = array.uints_as();
let _: &mut [PackedRgba] = slice_mut.uints_as_mut();
let _: &mut [PackedRgba] = slice_box.uints_as_mut();
let _: &mut [PackedRgba] = vec.uints_as_mut();
let _: &mut [PackedRgba] = array.uints_as_mut();
}
}