Enum Visibility 

pub enum Visibility {
    Visible,
    Hidden,
}

Reported terminal visibility (DEC mode 2033).

This is an advisory, deliberately conservative hint used to skip expensive rendering that nobody can see. Hidden is precise: the terminal has positive knowledge that the view is not observable. Visible only means it may be observable.

Only 1 and 2 decode to a report; any other value is left as Event::UnknownCsi. Treat a terminal that reports nothing, or reports something unrecognized, as visible.

Variants

Visible

Potentially visible (CSI ? 999 ; 1 n). The view may be observable.

This does not promise that any cell is onscreen: the terminal reports it whenever visibility is unknown or any view may be observed.

Hidden

Not visible (CSI ? 999 ; 2 n). The terminal knows the view is not ordinarily observable, so expensive visual updates can be paused.

Never assume this lasts for any minimum duration.

Implementations

impl Visibility

pub fn is_visible(self) -> bool

Whether the terminal view may be observable, so visual work is worth doing. true for Visible.

Trait Implementations

impl Clone for Visibility

fn clone(&self) -> Visibility

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Visibility

impl Debug for Visibility

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

Formats the value using the given formatter.

impl Display for Visibility

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

Formats the value using the given formatter.

impl Eq for Visibility

impl Hash for Visibility

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

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 PartialEq for Visibility

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for Visibility