typst/src/library/boxed.rs
2020-10-02 15:43:29 +02:00

43 lines
1.2 KiB
Rust

use super::*;
use crate::length::ScaleLength;
/// `box`: Layouts its contents into a box.
///
/// # Keyword arguments
/// - `width`: The width of the box (length of relative to parent's width).
/// - `height`: The height of the box (length of relative to parent's height).
pub async fn boxed(
_: Span,
mut args: DictValue,
mut ctx: LayoutContext<'_>,
) -> Pass<Value> {
let mut f = Feedback::new();
let content = args.take::<SynTree>().unwrap_or_default();
ctx.base = ctx.spaces[0].size;
ctx.spaces.truncate(1);
ctx.repeat = false;
if let Some(w) = args.take_key::<ScaleLength>("width", &mut f) {
let length = w.raw_scaled(ctx.base.x);
ctx.base.x = length;
ctx.spaces[0].size.x = length;
ctx.spaces[0].expansion.horizontal = true;
}
if let Some(h) = args.take_key::<ScaleLength>("height", &mut f) {
let length = h.raw_scaled(ctx.base.y);
ctx.base.y = length;
ctx.spaces[0].size.y = length;
ctx.spaces[0].expansion.vertical = true;
}
let layouted = layout(&content, ctx).await;
let layout = layouted.output.into_iter().next().unwrap();
f.extend(layouted.feedback);
args.unexpected(&mut f);
Pass::commands(vec![Add(layout)], f)
}