Enum Unit 

pub enum Unit {
    Point,
    Pica,
    Inch,
    Millimeter,
    Centimeter,
    Pixel,
    Em,
}

DSSSL Unit (length dimension)

Represents the unit of a quantity. All units can be converted to a canonical representation (inches) for arithmetic operations.

DSSSL Spec §6.2: Quantities are dimensional values

Unit Conversions (from DSSSL spec):

• 1in = 72pt (points)
• 1in = 6pi (picas)
• 1in = 25.4mm (millimeters)
• 1cm = 10mm
• 1pc = 1pi (alternate name)
• 1em = context-dependent (font size)

Variants

Point

Point (1/72 inch)

Pica

Pica (1/6 inch = 12 points)

Inch

Inch (base unit)

Millimeter

Millimeter (1/25.4 inch)

Centimeter

Centimeter (10mm = 10/25.4 inch)

Pixel

Pixel (1/96 inch - CSS pixel standard)

Em

Em (relative to font size - context-dependent)

Implementations

impl Unit

pub fn to_inches(&self, magnitude: f64) -> f64

Convert this unit to inches (canonical form)

All quantities are normalized to inches for arithmetic operations. Em units default to 12pt unless a font size context is available.

pub fn from_inches(&self, inches: f64) -> f64

Convert from inches to this unit

pub fn from_suffix(suffix: &str) -> Option<Unit>

Parse unit suffix string

pub fn suffix(&self) -> &'static str

Get unit suffix string

Trait Implementations

impl Clone for Unit

fn clone(&self) -> Unit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Unit

impl Debug for Unit

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

Formats the value using the given formatter.

impl PartialEq for Unit

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Unit