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|
use super::*;
/// A container with a horizontal and vertical component.
#[derive(Default, Copy, Clone, Eq, PartialEq, Hash)]
pub struct Spec<T> {
/// The horizontal component.
pub x: T,
/// The vertical component.
pub y: T,
}
impl<T> Spec<T> {
/// Create a new instance from the two components.
pub fn new(x: T, y: T) -> Self {
Self { x, y }
}
/// Create a new instance with two equal components.
pub fn splat(v: T) -> Self
where
T: Clone,
{
Self { x: v.clone(), y: v }
}
/// Maps the individual fields with `f`.
pub fn map<F, U>(self, mut f: F) -> Spec<U>
where
F: FnMut(T) -> U,
{
Spec { x: f(self.x), y: f(self.y) }
}
/// Zip two instances into an instance over a tuple.
pub fn zip<U>(self, other: impl Into<Spec<U>>) -> Spec<(T, U)> {
let other = other.into();
Spec {
x: (self.x, other.x),
y: (self.y, other.y),
}
}
/// Whether a condition is true for both fields.
pub fn all<F>(self, mut f: F) -> bool
where
F: FnMut(&T) -> bool,
{
f(&self.x) && f(&self.y)
}
/// Convert to the generic representation.
pub fn to_gen(self, block: SpecAxis) -> Gen<T> {
match block {
SpecAxis::Horizontal => Gen::new(self.y, self.x),
SpecAxis::Vertical => Gen::new(self.x, self.y),
}
}
}
impl From<Size> for Spec<Length> {
fn from(size: Size) -> Self {
size.to_spec()
}
}
impl Spec<Length> {
/// The zero value.
pub fn zero() -> Self {
Self { x: Length::zero(), y: Length::zero() }
}
/// Convert to a point.
pub fn to_point(self) -> Point {
Point::new(self.x, self.y)
}
/// Convert to a size.
pub fn to_size(self) -> Size {
Size::new(self.x, self.y)
}
}
impl<T> Spec<Option<T>> {
/// Unwrap the individual fields.
pub fn unwrap_or(self, other: Spec<T>) -> Spec<T> {
Spec {
x: self.x.unwrap_or(other.x),
y: self.y.unwrap_or(other.y),
}
}
}
impl<T> Get<SpecAxis> for Spec<T> {
type Component = T;
fn get(self, axis: SpecAxis) -> T {
match axis {
SpecAxis::Horizontal => self.x,
SpecAxis::Vertical => self.y,
}
}
fn get_mut(&mut self, axis: SpecAxis) -> &mut T {
match axis {
SpecAxis::Horizontal => &mut self.x,
SpecAxis::Vertical => &mut self.y,
}
}
}
impl<T: Debug> Debug for Spec<T> {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "Spec({:?}, {:?})", self.x, self.y)
}
}
/// The two specific layouting axes.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
pub enum SpecAxis {
/// The horizontal layouting axis.
Horizontal,
/// The vertical layouting axis.
Vertical,
}
impl SpecAxis {
/// The direction with the given positivity for this axis.
pub fn dir(self, positive: bool) -> Dir {
match (self, positive) {
(Self::Horizontal, true) => Dir::LTR,
(Self::Horizontal, false) => Dir::RTL,
(Self::Vertical, true) => Dir::TTB,
(Self::Vertical, false) => Dir::BTT,
}
}
/// The other axis.
pub fn other(self) -> Self {
match self {
Self::Horizontal => Self::Vertical,
Self::Vertical => Self::Horizontal,
}
}
}
|
