124 lines
2.8 KiB
Rust
124 lines
2.8 KiB
Rust
use super::*;
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/// A container with a main and cross component.
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#[derive(Default, Copy, Clone, Eq, PartialEq, Hash)]
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pub struct Gen<T> {
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/// The cross component.
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pub cross: T,
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/// The main component.
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pub main: T,
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}
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impl<T> Gen<T> {
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/// Create a new instance from the two components.
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pub fn new(cross: T, main: T) -> Self {
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Self { cross, main }
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}
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/// Create a new instance with two equal components.
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pub fn splat(value: T) -> Self
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where
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T: Clone,
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{
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Self { cross: value.clone(), main: value }
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}
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/// Maps the individual fields with `f`.
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pub fn map<F, U>(self, mut f: F) -> Gen<U>
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where
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F: FnMut(T) -> U,
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{
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Gen { cross: f(self.cross), main: f(self.main) }
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}
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/// Convert to the specific representation.
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pub fn to_spec(self, main: SpecAxis) -> Spec<T> {
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match main {
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SpecAxis::Horizontal => Spec::new(self.main, self.cross),
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SpecAxis::Vertical => Spec::new(self.cross, self.main),
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}
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}
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}
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impl Gen<Length> {
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/// The zero value.
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pub fn zero() -> Self {
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Self {
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main: Length::zero(),
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cross: Length::zero(),
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}
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}
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/// Convert to a point.
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pub fn to_point(self, main: SpecAxis) -> Point {
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self.to_spec(main).to_point()
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}
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/// Convert to a size.
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pub fn to_size(self, main: SpecAxis) -> Size {
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self.to_spec(main).to_size()
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}
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}
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impl<T> Gen<Option<T>> {
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/// Unwrap the individual fields.
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pub fn unwrap_or(self, other: Gen<T>) -> Gen<T> {
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Gen {
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cross: self.cross.unwrap_or(other.cross),
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main: self.main.unwrap_or(other.main),
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}
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}
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}
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impl<T> Get<GenAxis> for Gen<T> {
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type Component = T;
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fn get(self, axis: GenAxis) -> T {
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match axis {
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GenAxis::Main => self.main,
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GenAxis::Cross => self.cross,
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}
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}
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fn get_mut(&mut self, axis: GenAxis) -> &mut T {
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match axis {
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GenAxis::Main => &mut self.main,
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GenAxis::Cross => &mut self.cross,
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}
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}
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}
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impl<T: Debug> Debug for Gen<T> {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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write!(f, "Gen({:?}, {:?})", self.main, self.cross)
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}
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}
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/// The two generic layouting axes.
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#[derive(Debug, Copy, Clone, Eq, PartialEq)]
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pub enum GenAxis {
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/// The axis pages and paragraphs are set along.
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Main,
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/// The axis words and lines are set along.
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Cross,
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}
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impl GenAxis {
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/// The other axis.
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pub fn other(self) -> Self {
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match self {
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Self::Main => Self::Cross,
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Self::Cross => Self::Main,
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}
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}
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}
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impl Display for GenAxis {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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f.pad(match self {
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Self::Main => "main",
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Self::Cross => "cross",
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})
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}
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}
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