typst/src/library/hide.rs
2022-02-23 14:53:55 +01:00

33 lines
754 B
Rust

//! Hiding of nodes without affecting layout.
use super::prelude::*;
/// Hide a node without affecting layout.
#[derive(Debug, Hash)]
pub struct HideNode(pub LayoutNode);
#[class]
impl HideNode {
fn construct(_: &mut Context, args: &mut Args) -> TypResult<Template> {
Ok(Template::inline(Self(args.expect("body")?)))
}
}
impl Layout for HideNode {
fn layout(
&self,
ctx: &mut Context,
regions: &Regions,
styles: StyleChain,
) -> TypResult<Vec<Arc<Frame>>> {
let mut frames = self.0.layout(ctx, regions, styles)?;
// Clear the frames.
for frame in &mut frames {
*frame = Arc::new(Frame { elements: vec![], ..**frame });
}
Ok(frames)
}
}