Enum Fidelity 

pub enum Fidelity {
    Ansi16,
    Ansi256,
    TrueColor,
}

How many colours the terminal can actually show.

Only Fidelity::Ansi16 changes what this crate draws. Above it, colour separates a raised surface from a well on every shipped theme, and the glyph fallback below never fires. Recorded rather than inferred, because a caller that quantised its palette knows the answer and this crate cannot recover it from the colours afterwards.

Variants

Ansi16

Sixteen colours. Depth cannot be carried by colour: a well collapses onto its face on 18 of 31 themes and a bevel loses an edge on all 31.

Ansi256

The 6x6x6 cube and the grey ramp. Enough on 27 of 31 themes.

TrueColor

24-bit. The only failures left belong to the theme, not the terminal.

Implementations

impl Fidelity

pub fn detect() -> Self

Read the terminal’s own claim, from COLORTERM then TERM.

Deliberately credulous. A terminal that understates itself costs a slightly heavier frame; one that overstates itself was going to render wrongly regardless of what this crate assumed.

pub const fn separates_depth(self) -> bool

Whether colour alone can tell a raised surface from a well here.

Trait Implementations

impl Clone for Fidelity

fn clone(&self) -> Fidelity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Fidelity

impl Debug for Fidelity

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

Formats the value using the given formatter.

impl Default for Fidelity

fn default() -> Fidelity

Returns the “default value” for a type.

impl Eq for Fidelity

impl PartialEq for Fidelity

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Fidelity