mirror of
https://github.com/typst/typst
synced 2025-05-20 03:55:29 +08:00
73 lines
2.3 KiB
Rust
73 lines
2.3 KiB
Rust
use std::mem;
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use super::*;
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use crate::eval::Absolute;
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use crate::geom::{Linear, Sides};
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use crate::paper::{Paper, PaperClass};
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/// `page`: Configure pages.
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///
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/// # Positional arguments
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/// - The name of a paper, e.g. `a4` (optional).
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///
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/// # Keyword arguments
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/// - `width`: The width of pages (length).
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/// - `height`: The height of pages (length).
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/// - `margins`: The margins for all sides (length or relative to side lengths).
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/// - `left`: The left margin (length or relative to width).
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/// - `right`: The right margin (length or relative to width).
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/// - `top`: The top margin (length or relative to height).
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/// - `bottom`: The bottom margin (length or relative to height).
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/// - `flip`: Flips custom or paper-defined width and height (boolean).
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pub async fn page(mut args: ValueDict, ctx: &mut LayoutContext) -> Value {
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let mut page = ctx.state.page.clone();
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if let Some(paper) = args.take::<Paper>() {
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page.class = paper.class;
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page.size = paper.size();
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}
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if let Some(Absolute(width)) = args.take_key::<Absolute>("width", &mut ctx.f) {
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page.class = PaperClass::Custom;
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page.size.width = width;
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}
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if let Some(Absolute(height)) = args.take_key::<Absolute>("height", &mut ctx.f) {
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page.class = PaperClass::Custom;
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page.size.height = height;
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}
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if let Some(margins) = args.take_key::<Linear>("margins", &mut ctx.f) {
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page.margins = Sides::uniform(Some(margins));
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}
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if let Some(left) = args.take_key::<Linear>("left", &mut ctx.f) {
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page.margins.left = Some(left);
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}
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if let Some(top) = args.take_key::<Linear>("top", &mut ctx.f) {
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page.margins.top = Some(top);
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}
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if let Some(right) = args.take_key::<Linear>("right", &mut ctx.f) {
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page.margins.right = Some(right);
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}
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if let Some(bottom) = args.take_key::<Linear>("bottom", &mut ctx.f) {
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page.margins.bottom = Some(bottom);
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}
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if args.take_key::<bool>("flip", &mut ctx.f).unwrap_or(false) {
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mem::swap(&mut page.size.width, &mut page.size.height);
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}
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args.unexpected(&mut ctx.f);
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Value::Commands(vec![SetPageState(page)])
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}
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/// `pagebreak`: Ends the current page.
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pub async fn pagebreak(args: ValueDict, ctx: &mut LayoutContext) -> Value {
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args.unexpected(&mut ctx.f);
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Value::Commands(vec![BreakPage])
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}
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