Struct Surface 

pub struct Surface {
    pub media_rows: HashMap<String, usize>,
    pub math_rows: HashMap<String, usize>,
    pub inline_pictures: bool,
}

What the surface a map is built for can paint, and how tall its pictures came out — the things about a frontend that change the rows core lays down, gathered from the frontend by crate::Doc and threaded into every build. The defaults are the plain surface: nothing painted in a line, every picture a one-row placeholder, which is what every test that passes Surface::default() gets and what every build got before there was one.

Fields

media_rows: HashMap<String, usize>

How many visual rows each block image reserves, keyed by its destination — the frontend’s per-image height, set through crate::Doc::set_media_rows so [Builder::block_media] can size the placeholder without core doing any I/O. A destination absent from the map (or a 0/1 entry) reserves the bare one-row placeholder.

math_rows: HashMap<String, usize>

The same for each display formula, keyed by its TeX verbatim (the MathMark::tex a frontend was handed) — set through crate::Doc::set_math_rows once the frontend has typeset and measured the picture.

inline_pictures: bool

Whether the surface can paint a picture inside a line of text, so an inline formula may render to one atom glyph it draws over (MathInfo). A pixel-laid-out frontend says yes; a terminal cannot composite an image over one cell, and leaves this off to keep an inline formula as the code-styled TeX it always showed. Off by default.

Trait Implementations

impl Clone for Surface

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Surface

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Surface

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Surface

impl PartialEq for Surface

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Surface