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//! Representation of typesetted documents.
use std::io::{self, Write};
use crate::size::{Size, Size2D};
/// A complete typesetted document, which can be exported.
#[derive(Debug, Clone)]
pub struct Document {
/// The pages of the document.
pub pages: Vec<Page>,
}
/// A page of a document.
#[derive(Debug, Clone)]
pub struct Page {
/// The width of the page.
pub width: Size,
/// The height of the page.
pub height: Size,
/// Layouting actions specifying how to draw content on the page.
pub actions: Vec<LayoutAction>,
}
/// A layouting action.
#[derive(Debug, Clone)]
pub enum LayoutAction {
/// Move to an absolute position.
MoveAbsolute(Size2D),
/// Set the font by index and font size.
SetFont(usize, f32),
/// Write text starting at the current position.
WriteText(String),
}
impl LayoutAction {
/// Serialize this layout action into a string representation.
pub fn serialize<W: Write>(&self, f: &mut W) -> io::Result<()> {
use LayoutAction::*;
match self {
MoveAbsolute(s) => write!(f, "m {:.4} {:.4}", s.x.to_pt(), s.y.to_pt()),
SetFont(i, s) => write!(f, "f {} {}", i, s),
WriteText(s) => write!(f, "w {}", s),
}
}
}
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