Struct Cell 

pub struct Cell {
    pub width: u8,
    pub style: StyleId,
    /* private fields */
}

One cell: a grapheme and its style. A wide grapheme’s second column is a continuation cell (empty text, width 0).

A cell is small and Copy, with no heap string: a grapheme of up to four bytes (every single character, and short clusters such as e and a combining accent) is kept inline, and a longer one (an emoji joined with ZWJs) as an index into a table of every such grapheme seen, which is shared by all screens and only grows. Comparing, copying and scrolling cells moves plain data, as a game keeps its hot data flat.

use rich_ext::frame::StyleId;
use rich_ext::surface::Cell;

let a = Cell::new("é", 1, StyleId::NONE);
let family = Cell::new("👨\u{200d}👩\u{200d}👧", 2, StyleId::NONE);
assert_eq!((a.text(), family.text()), ("é", "👨\u{200d}👩\u{200d}👧"));
assert_eq!(family, Cell::new("👨\u{200d}👩\u{200d}👧", 2, StyleId::NONE));
assert_eq!(std::mem::size_of::<Cell>(), 12);

Fields

width: u8

style: StyleId

Implementations

impl Cell

pub fn new(text: &str, width: u8, style: StyleId) -> Cell

A cell showing text (one grapheme), width columns wide (0 for a continuation), in style.

pub fn text(&self) -> &str

The grapheme the cell shows; empty for a continuation.

pub fn is_continuation(&self) -> bool

Trait Implementations

impl Clone for Cell

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Cell

impl Debug for Cell

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

Formats the value using the given formatter.

impl Eq for Cell

impl Hash for Cell

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Cell

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Cell