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use crate::func::prelude::*;
/// `page.break`: Ends the current page.
#[derive(Debug, PartialEq)]
pub struct PageBreak;
function! {
data: PageBreak,
parse: plain,
layout(_, _) { Ok(commands![FinishSpace]) }
}
/// `page.size`: Set the size of pages.
#[derive(Debug, PartialEq)]
pub struct PageSize {
width: Option<Size>,
height: Option<Size>,
}
function! {
data: PageSize,
parse(args, body, _ctx) {
parse!(forbidden: body);
Ok(PageSize {
width: args.get_key_opt::<ArgSize>("width")?.map(|a| a.val),
height: args.get_key_opt::<ArgSize>("height")?.map(|a| a.val),
})
}
layout(this, ctx) {
let mut style = ctx.page_style;
if let Some(width) = this.width { style.dimensions.x = width; }
if let Some(height) = this.height { style.dimensions.y = height; }
Ok(commands![SetPageStyle(style)])
}
}
/// `page.margins`: Set the margins of pages.
#[derive(Debug, PartialEq)]
pub struct PageMargins {
left: Option<Size>,
top: Option<Size>,
right: Option<Size>,
bottom: Option<Size>,
}
function! {
data: PageMargins,
parse(args, body, _ctx) {
parse!(forbidden: body);
let default = args.get_pos_opt::<ArgSize>()?;
let mut get = |which| {
args.get_key_opt::<ArgSize>(which)
.map(|size| size.or(default).map(|a| a.val))
};
Ok(PageMargins {
left: get("left")?,
top: get("top")?,
right: get("right")?,
bottom: get("bottom")?,
})
}
layout(this, ctx) {
let mut style = ctx.page_style;
if let Some(left) = this.left { style.margins.left = left; }
if let Some(top) = this.top { style.margins.top = top; }
if let Some(right) = this.right { style.margins.right = right; }
if let Some(bottom) = this.bottom { style.margins.bottom = bottom; }
Ok(commands![SetPageStyle(style)])
}
}
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