Struct MathBox 

pub struct MathBox {
    pub width: usize,
    pub height: usize,
    pub baseline: usize,
    /* private fields */
}

Represents a box of grapheme clusters for rendering math expressions. Uses a 2D grid with baseline tracking for proper vertical alignment. Each cell holds a grapheme cluster (base char + combining marks).

Fields

width: usize

height: usize

baseline: usize

The baseline row (0-indexed from top)

Implementations

impl MathBox

pub fn from_text(text: &str) -> Self

Create a MathBox from a single-line string

pub fn empty(width: usize, height: usize, baseline: usize) -> Self

Create an empty MathBox with specified dimensions

pub fn from_lines(lines: Vec<String>, baseline: usize) -> Self

Create a MathBox from multiple lines

pub fn get(&self, x: usize, y: usize) -> char

Get grapheme at position (returns space if out of bounds or empty)

pub fn get_grapheme(&self, x: usize, y: usize) -> &str

Get full grapheme cluster at position

pub fn set(&mut self, x: usize, y: usize, ch: char)

Set character at position

pub fn set_grapheme(&mut self, x: usize, y: usize, g: &str)

Set grapheme cluster at position

pub fn blit(&mut self, other: &MathBox, x_offset: usize, y_offset: usize)

Copy another MathBox into this one at the specified offset

pub fn concat_horizontal(boxes: &[MathBox]) -> MathBox

Concatenate horizontally, aligning by baseline

pub fn stack_vertical(boxes: &[MathBox]) -> MathBox

Stack vertically, centered horizontally

pub fn fill_row(&mut self, y: usize, ch: char)

Fill a row with a character

pub fn fill_col(&mut self, x: usize, ch: char)

Fill a column with a character

pub fn to_string(&self) -> String

Convert to string representation

pub fn to_lines(&self) -> Vec<String>

Get lines as vector of strings

Trait Implementations

impl Clone for MathBox

fn clone(&self) -> MathBox

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MathBox

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

Formats the value using the given formatter.

impl Default for MathBox

fn default() -> Self

Returns the “default value” for a type.