Enum libnotcurses_sys::NcAlpha

#[repr(u32)]
pub enum NcAlpha {
    Blend,
    HighContrast,
    Opaque,
    Transparent,
}

Alpha information, part of an NcChannel, applies to NcCell’s foreground or background color.

Default:

NcAlpha::Opaque

Diagram

Internally it’s 2 bits of alpha, surrounded by context dependent bits:

~~AA~~~~ -------- -------- --------

See also: NcChannels for more context information.

Variants

Blend

Indicates NcCell’s foreground or background color will be a composite between its color and the NcCells’ corresponding colors underneath it.

HighContrast

Indicates the foreground color will be high-contrast, relative to the computed background.

Background cannot be high-contrast.

Opaque

Indicates NcCell’s foreground or background color is used unchanged.

Transparent

Indicates NcCell’s foreground or background color is derived entirely from the NcCells underneath it.

Trait Implementations

impl Clone for NcAlpha

fn clone(&self) -> NcAlpha

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NcAlpha

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

Formats the value using the given formatter.

impl Default for NcAlpha

fn default() -> Self

Returns the “default value” for a type.

impl Display for NcAlpha

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

Formats the value using the given formatter.

impl From<NcAlpha> for NcAlpha_u32

fn from(alpha: NcAlpha) -> Self

Performs the conversion.

impl From<u32> for NcAlpha

fn from(alpha: NcAlpha_u32) -> Self

Performs the conversion.

impl PartialEq<NcAlpha> for NcAlpha

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for NcAlpha

impl StructuralPartialEq for NcAlpha