Struct Em

pub struct Em(/* private fields */);

A length that is relative to the font size.

1em is the same as the font size.

Implementations

impl Em

pub const fn zero() -> Self

The zero em length.

pub const fn one() -> Self

The font size.

pub const fn new(em: f64) -> Self

Create a font-relative length.

pub fn from_units(units: impl Into<f64>, units_per_em: f64) -> Self

Create an em length from font units at the given units per em.

pub fn from_length(length: Abs, font_size: Abs) -> Self

Create an em length from a length at the given font size.

pub const fn get(self) -> f64

The number of em units.

pub fn abs(self) -> Self

The absolute value of this em length.

pub fn at(self, font_size: Abs) -> Abs

Convert to an absolute length at the given font size.

Trait Implementations

impl Add for Em

type Output = Em

The resulting type after applying the + operator.

fn add(self, other: Self) -> Self

Performs the + operation.

impl AddAssign for Em

fn add_assign(&mut self, other: Em)

Performs the += operation.

impl Clone for Em

fn clone(&self) -> Em

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Em

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

Formats the value using the given formatter.

impl Default for Em

fn default() -> Em

Returns the “default value” for a type.

impl Div<f64> for Em

type Output = Em

The resulting type after applying the / operator.

fn div(self, other: f64) -> Self

Performs the / operation.

impl Div for Em

type Output = f64

The resulting type after applying the / operator.

fn div(self, other: Self) -> f64

Performs the / operation.

impl DivAssign<f64> for Em

fn div_assign(&mut self, other: f64)

Performs the /= operation.

impl From<Em> for Length

fn from(em: Em) -> Self

Converts to this type from the input type.

impl From<Em> for Rel<Length>

fn from(em: Em) -> Self

Converts to this type from the input type.

impl From<Em> for Spacing

fn from(em: Em) -> Self

Converts to this type from the input type.

impl Hash for Em

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 IntoValue for Em

fn into_value(self) -> Value

Cast this type into a value.

impl Mul<Em> for f64

type Output = Em

The resulting type after applying the * operator.

fn mul(self, other: Em) -> Em

Performs the * operation.

impl Mul<f64> for Em

type Output = Em

The resulting type after applying the * operator.

fn mul(self, other: f64) -> Self

Performs the * operation.

impl MulAssign<f64> for Em

fn mul_assign(&mut self, other: f64)

Performs the *= operation.

impl Neg for Em

type Output = Em

The resulting type after applying the - operator.

fn neg(self) -> Self

Performs the unary - operation.

impl Numeric for Em

fn zero() -> Self

The identity element for addition.

fn is_finite(self) -> bool

Whether self consists only of finite parts.

fn is_zero(self) -> bool

Whether self is zero.

impl Ord for Em

fn cmp(&self, other: &Em) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Em

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Em

fn partial_cmp(&self, other: &Em) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Repr for Em

fn repr(&self) -> EcoString

Return the debug representation of the value.

impl Resolve for Em

type Output = Abs

The type of the resolved output.

fn resolve(self, styles: StyleChain<'_>) -> Self::Output

Resolve the value using the style chain.

impl Sub for Em

type Output = Em

The resulting type after applying the - operator.

fn sub(self, other: Em) -> Em

Performs the - operation.

impl SubAssign for Em

fn sub_assign(&mut self, other: Em)

Performs the -= operation.

impl Sum for Em

fn sum<I: Iterator<Item = Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by “summing up” the items.

impl Copy for Em

impl Eq for Em

impl StructuralPartialEq for Em