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use std::fmt::{self, Debug, Formatter};
use super::*;
use crate::eval::Softness;
/// A spacing node.
#[derive(Copy, Clone, PartialEq)]
pub struct NodeSpacing {
/// The amount of spacing to insert.
pub amount: Length,
/// Defines how spacing interacts with surrounding spacing.
///
/// Hard spacing assures that a fixed amount of spacing will always be
/// inserted. Soft spacing will be consumed by previous soft spacing or
/// neighbouring hard spacing and can be used to insert overridable spacing,
/// e.g. between words or paragraphs.
///
/// This field is only used in evaluation, not in layouting.
pub softness: Softness,
}
impl Layout for NodeSpacing {
fn layout(&self, _: &mut LayoutContext, _: &Areas) -> Layouted {
Layouted::Spacing(self.amount)
}
}
impl Debug for NodeSpacing {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
match self.softness {
Softness::Soft => write!(f, "Soft({})", self.amount),
Softness::Hard => write!(f, "Hard({})", self.amount),
}
}
}
impl From<NodeSpacing> for Node {
fn from(spacing: NodeSpacing) -> Self {
Self::Spacing(spacing)
}
}
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