Enum ColorDepth 

#[repr(u8)]
pub enum ColorDepth {
    Mono = 0,
    Ansi16 = 1,
    Ansi256 = 2,
    TrueColor = 3,
}

Maximum color fidelity the terminal may receive.

This is a single ordered capability rather than independent booleans so impossible states such as “truecolor but not 256-color” cannot exist.

Variants

Mono = 0

Do not emit foreground or background color sequences.

Ansi16 = 1

Standard 16-color ANSI palette.

Ansi256 = 2

Extended 256-color ANSI palette.

TrueColor = 3

Full 24-bit RGB color.

Implementations

impl ColorDepth

pub fn detect() -> ColorDepth

Detect color depth using the canonical terminal capability detector.

pub fn detect_from_env( no_color: Option<&str>, colorterm: Option<&str>, term: Option<&str>, ) -> ColorDepth

Detect color depth from explicit environment values.

NO_COLOR presence wins over every terminal signal. TERM=dumb, TERM=vt100, and a missing/empty TERM are monochrome. Direct-color TERM variants (*-direct[digits], *-truecolor, and *-24bit) receive truecolor. Plain xterm and other non-dumb terminals conservatively receive ANSI16.

pub const fn as_str(self) -> &'static str

Stable identifier used in diagnostics and evidence logs.

pub const fn supports_color(self) -> bool

Whether any color sequences may be emitted.

pub const fn supports_256_colors(self) -> bool

Whether the terminal supports at least the 256-color palette.

pub const fn supports_true_color(self) -> bool

Whether the terminal supports 24-bit RGB color.

Trait Implementations

impl Clone for ColorDepth

fn clone(&self) -> ColorDepth

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColorDepth

impl Debug for ColorDepth

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

Formats the value using the given formatter.

impl Default for ColorDepth

fn default() -> ColorDepth

Returns the “default value” for a type.

impl Display for ColorDepth

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

Formats the value using the given formatter.

impl Eq for ColorDepth

impl Hash for ColorDepth

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

where __H: Hasher,

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 Ord for ColorDepth

fn cmp(&self, other: &ColorDepth) -> 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 ColorDepth

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ColorDepth

fn partial_cmp(&self, other: &ColorDepth) -> 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 StructuralPartialEq for ColorDepth