Enum EnvelopeKind 

pub enum EnvelopeKind {
    Hover,
    Press,
    FocusRing,
    SubtreeHover,
    SubtreePress,
    SubtreeFocus,
}

State-driven visual envelope kind. Each is a 0..1 amount written by the animation tick and consumed by crate::draw_ops::draw_ops to modulate a node’s surface visuals (lighten on hover, darken on press, fade in/out the focus ring).

Two flavours:

• Per-node envelopes (Hover, Press, FocusRing) track whether this exact node is the active hover / press / focus target. Drive per-element visuals — hover-lighten, press-darken, focus-ring fade. Exactly one node owns each at a time, mirroring the single-target apply_to_state semantics.
• Subtree envelopes (SubtreeHover, SubtreePress, SubtreeFocus) track whether the active hover / press / focus target is this node or any descendant. Drive region-shaped affordances — hover-revealed close icons, action pills that should stay visible while the cursor moves to a focusable child, hover-driven translate / scale / tint. Multiple nodes can be “hot” simultaneously (every ancestor of the leaf target). CSS :hover semantics, lifted onto our id-keyed tree.

Variants

Hover

Press

FocusRing

SubtreeHover

SubtreePress

SubtreeFocus

Trait Implementations

impl Clone for EnvelopeKind

fn clone(&self) -> EnvelopeKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnvelopeKind

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

Formats the value using the given formatter.

impl Hash for EnvelopeKind

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 EnvelopeKind

fn eq(&self, other: &EnvelopeKind) -> 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 EnvelopeKind

impl Eq for EnvelopeKind

impl StructuralPartialEq for EnvelopeKind