Struct ChangeFlags 

pub struct ChangeFlags(/* private fields */);

Bitflags describing what work a View::rebuild pass invalidated.

Combine with |. LAYOUT implies a subsequent paint, but the flags are stored orthogonally so a caller can distinguish “geometry changed” from “only pixels changed”; use ChangeFlags::needs_paint for the common “does anything need repainting?” query.

Implementations

impl ChangeFlags

pub const NONE: Self

Nothing changed; no downstream work required.

pub const PAINT: Self

The widget must be re-painted.

pub const LAYOUT: Self

The widget must be re-laid-out (and therefore re-painted).

pub const fn contains(self, other: Self) -> bool

Whether self contains every bit set in other.

pub const fn union(self, other: Self) -> Self

The union of two flag sets.

pub const fn is_empty(self) -> bool

Whether no flags are set.

pub const fn needs_paint(self) -> bool

Whether this change requires a repaint (either PAINT or LAYOUT).

pub const fn needs_layout(self) -> bool

Whether this change requires a relayout.

Trait Implementations

impl BitOr for ChangeFlags

type Output = ChangeFlags

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self

Performs the | operation.

impl BitOrAssign for ChangeFlags

fn bitor_assign(&mut self, rhs: Self)

Performs the |= operation.

impl Clone for ChangeFlags

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ChangeFlags

impl Debug for ChangeFlags

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

Formats the value using the given formatter.

impl Default for ChangeFlags

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ChangeFlags

impl PartialEq for ChangeFlags

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ChangeFlags