tufte-handout.typ

// Size of the left "margin" (note area)
#let margin-size = 23.5%
// Spacer so that main content and notes don't rub up against each other
#let margin-space = 0.2in

/*
 * Inserts a margin note containing `content`
 *  `dy` can be used to adjust the note content vertically
 */
#let margin-note(dy: -1em, content) = {
    place(
        right,
        dx: margin-size + margin-space,
        dy: dy,
        block(width: margin-size, {
            set text(size: 0.75em)
            set align(left)
            content
        })
    )
}

/*
 * Renders `content` with the module's text styling.  This is useful for content
 *  that is outside of the `template` container but which should be visually consistent.
 */
#let apply-text-styles(content) = {
    set text(
        font: ("TeX Gyre Pagella")
    )
    show heading.where(level: 1): it => text(
        size: 12pt,
        weight: "extralight",
        style: "italic",
        {
            v(1em)
            it.body
        }
    )
    show heading.where(level: 2): it => text(
        size: 10pt,
        style: "italic",
        it.body
    )
    content
}


/* Call to wrap `doc` in the handout layout
 *  `title` will be rendered in the page header
 *  `wrapper` should be either `none` or a function that takes `doc` and returns
 *    content.  This can be used to inject custom styles.
 */
#let template(
    title: none,
    wrapper: apply-text-styles,
    doc,
) = {
    set page(
        header: {
            set text(size: 7pt, weight: "semibold", tracking: 1.25pt)
            h(1fr)
            upper(title)
        }
    )

    grid(
        columns: (100% - margin-size, margin-size),
        if type(wrapper) == "function" {
            wrapper(doc)
        } else {
            doc
        }
    )
}