Enum ColorLevel 

pub enum ColorLevel {
    Auto,
    Truecolor,
    Ansi256,
    Ansi16,
    None,
}

Color capability tier supported by the terminal.

Variants

Auto

Automatically detected from terminal capabilities and environment.

Truecolor

Full 24-bit Truecolor (16 million RGB colors).

Ansi256

8-bit ANSI 256-color palette.

Ansi16

4-bit standard ANSI 16-color palette.

None

No colors supported or color disabled.

Implementations

impl ColorLevel

pub fn detect() -> ColorLevel

Detect the terminal’s color capability tier from environment variables.

pub fn detect_with(get_var: impl Fn(&str) -> Option<String>) -> ColorLevel

Test color capability using a mockable environment lookup closure.

Trait Implementations

impl Clone for ColorLevel

fn clone(&self) -> ColorLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ColorLevel

impl Debug for ColorLevel

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

Formats the value using the given formatter.

impl Default for ColorLevel

fn default() -> ColorLevel

Returns the “default value” for a type.

impl Eq for ColorLevel

impl Ord for ColorLevel

fn cmp(&self, other: &ColorLevel) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ColorLevel

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ColorLevel

fn partial_cmp(&self, other: &ColorLevel) -> 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 ColorLevel