Struct Visibility 

pub struct Visibility { /* private fields */ }

Breakpoint-aware visibility rule.

Encodes which breakpoints a widget should be visible at. Use with filter_rects to reclaim space from hidden widgets during layout.

Implementations

impl Visibility

pub const ALWAYS: Self

Visible at all breakpoints.

pub const NEVER: Self

Hidden at all breakpoints.

impl Visibility

pub const fn visible_above(bp: Breakpoint) -> Self

Visible at the given breakpoint and all larger ones.

Example: visible_above(Md) → visible at Md, Lg, Xl.

pub const fn visible_below(bp: Breakpoint) -> Self

Visible at the given breakpoint and all smaller ones.

Example: visible_below(Md) → visible at Xs, Sm, Md.

pub const fn only(bp: Breakpoint) -> Self

Visible at exactly one breakpoint.

pub fn at(breakpoints: &[Breakpoint]) -> Self

Visible at the specified breakpoints.

pub const fn hidden_below(bp: Breakpoint) -> Self

Hidden at the given breakpoint and all smaller ones (visible above).

Example: hidden_below(Md) → hidden at Xs, Sm; visible at Md, Lg, Xl.

pub const fn hidden_above(bp: Breakpoint) -> Self

Hidden at the given breakpoint and all larger ones (visible below).

Example: hidden_above(Md) → visible at Xs, Sm; hidden at Md, Lg, Xl.

pub const fn from_mask(mask: u8) -> Self

Create from a raw bitmask (bits 0–4 correspond to Xs–Xl).

impl Visibility

pub const fn is_visible(self, bp: Breakpoint) -> bool

Whether the widget is visible at the given breakpoint.

pub const fn is_hidden(self, bp: Breakpoint) -> bool

Whether the widget is hidden at the given breakpoint.

pub const fn is_always(self) -> bool

Whether the widget is always visible (at every breakpoint).

pub const fn is_never(self) -> bool

Whether the widget is never visible (hidden at every breakpoint).

pub const fn mask(self) -> u8

The raw bitmask.

pub const fn visible_count(self) -> u32

Count of breakpoints where this is visible.

pub fn visible_breakpoints(self) -> impl Iterator<Item = Breakpoint>

Iterator over breakpoints where visible.

impl Visibility

pub fn filter_rects<'a>( visibilities: &'a [Visibility], rects: &'a [Rect], bp: Breakpoint, ) -> Vec<(usize, Rect)>

Filter a list of rects, keeping only those whose visibility allows the given breakpoint.

Returns (index, rect) pairs for visible items. The index is the original position in the input, useful for mapping back to widget state.

This achieves space reclamation: hidden widgets don’t get any layout area.

pub fn count_visible(visibilities: &[Visibility], bp: Breakpoint) -> usize

Count how many items are visible at a given breakpoint.

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 Debug for Visibility

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

Formats the value using the given formatter.

impl Default for Visibility

fn default() -> Self

Returns the “default value” for a type.

impl Display for Visibility

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

Formats the value using the given formatter.

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 Copy for Visibility

impl Eq for Visibility

impl StructuralPartialEq for Visibility