Enum libnotcurses_sys::NcAlpha

#[repr(u32)]
pub enum NcAlpha {
    Blend = 268_435_456,
    HighContrast = 805_306_368,
    Opaque = 0,
    Transparent = 536_870_912,
}

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 = 268_435_456

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

HighContrast = 805_306_368

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

Background cannot be high-contrast.

Opaque = 0

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

Transparent = 536_870_912

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

Implementations

impl NcAlpha

pub fn display_short(&self) -> &str

Displays the short name identifier of the alpha value.

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

Converts to this type from the input type.

impl From<u32> for NcAlpha

fn from(alpha: NcAlpha_u32) -> Self

Converts to this type from the input type.

impl PartialEq 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for NcAlpha

impl Eq for NcAlpha

impl StructuralPartialEq for NcAlpha