Enum BoxContent 

pub enum BoxContent {
    Empty,
    Rule,
    Glyph {
        ch: char,
        glyph_id: u16,
    },
    HList(Vec<MathBox>),
    VList(Vec<MathBox>),
    Kern(Dim),
    Color(Color, Box<MathBox>),
    BackColor(Color, Box<MathBox>),
    Overlap(Vec<MathBox>),
    Line {
        x1: Dim,
        y1: Dim,
        x2: Dim,
        y2: Dim,
        thickness: Dim,
    },
    Frame {
        thickness: Dim,
        stroke: Option<Color>,
        inner: Box<MathBox>,
    },
}

What a box contains.

Glyphs carry an OpenType id from the math face. Lists compose children. Color wrappers do not change dimensions. BoxContent::Line and BoxContent::Frame are decorations from cancel / boxed constructs.

Variants

Empty

Empty box (strut or placeholder).

Rule

Solid rule (fraction bar, vinculum). No glyph.

Glyph

A single character whose metrics came from the math font.

Fields

ch: char

Character.

glyph_id: u16

OpenType glyph id.

HList(Vec<MathBox>)

Horizontal list. Width is the sum of children.

VList(Vec<MathBox>)

Vertical list. Height/depth stack on the baseline of the first box.

Kern(Dim)

Horizontal kern (atom spacing, \hspace).

Color(Color, Box<MathBox>)

Color wrapper. Dimensions match the inner box. Sets SVG fill.

BackColor(Color, Box<MathBox>)

Background color (\colorbox). Inner glyphs keep the default fill.

Overlap(Vec<MathBox>)

Children share the left edge; each child’s MathBox::shift is its baseline.

Line

Diagonal or free line in em, relative to the box left and baseline (y up).

Fields

x1: Dim

Start x (em from left).

y1: Dim

Start y (em above baseline).

x2: Dim

End x.

y2: Dim

End y.

thickness: Dim

Stroke thickness (em).

Frame

Stroked rectangle around the inner box. Inner is laid out at the same origin.

Fields

thickness: Dim

Rule thickness (em).

stroke: Option<Color>

Border color. None inherits the current fill (\boxed).

inner: Box<MathBox>

Contents inside the frame.

Trait Implementations

impl Clone for BoxContent

fn clone(&self) -> BoxContent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BoxContent

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

Formats the value using the given formatter.

impl Eq for BoxContent

impl PartialEq for BoxContent

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BoxContent