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