Enum AnimProp 

#[non_exhaustive]
pub enum AnimProp {
    HoverAmount,
    PressAmount,
    FocusRingAlpha,
    SubtreeHoverAmount,
    SubtreePressAmount,
    SubtreeFocusAmount,
    AppFill,
    AppStroke,
    AppTextColor,
    AppOpacity,
    AppScale,
    AppTranslateX,
    AppTranslateY,
}

Identifies a specific animatable property on a node. Used as part of the per-(node, prop) tracker key.

Two families:

• State envelopes (HoverAmount, PressAmount, FocusRingAlpha) are 0..1 floats tracking how much of the corresponding state’s visual delta is currently applied. The library updates these on every keyed interactive node automatically; no author opt-in. Why envelopes and not absolute colours: apply_state in draw_ops computes the display colour by lerping between n.fill and state_color(n.fill) based on the envelope. That keeps state easing completely independent of build-value changes — when the author swaps a button’s fill mid-hover, the new fill takes effect instantly with the same hover envelope, no fighting between trackers.
• App-driven absolute values (App*) are author-opted-in via crate::tree::El::animate. The tracker eases the value the build closure produces from the previous frame’s value to the new one.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

HoverAmount

0..1 amount of the hover-state visual delta currently applied. Eases 0→1 on pointer enter, 1→0 on pointer leave.

PressAmount

0..1 amount of the press-state visual delta currently applied. Eases 0→1 on press, 1→0 on release.

FocusRingAlpha

Focus-ring alpha — eases 0→1 on focus enter, 1→0 on focus leave. Lets the ring fade out after focus moves elsewhere.

SubtreeHoverAmount

0..1 amount tracking “is the hover target this node or any descendant?”. Eases 0→1 when the cursor enters the subtree, 1→0 when it leaves. Drives region-shaped hover affordances (hover_alpha, future hover-driven translate / scale / tint).

SubtreePressAmount

0..1 amount tracking “is the press target this node or any descendant?”. Subtree analogue of PressAmount.

SubtreeFocusAmount

0..1 amount tracking “is the focus target this node or any descendant?”. Subtree analogue of FocusRingAlpha. Composed with SubtreeHoverAmount by hover_alpha so keyboard focus reveals the same affordance hover does.

AppFill

App-driven fill colour — eases between the values the build closure produces across rebuilds.

AppStroke

App-driven stroke colour.

AppTextColor

App-driven text colour.

AppOpacity

App-driven paint-time alpha multiplier in [0, 1].

AppScale

App-driven uniform scale around the rect centre.

AppTranslateX

App-driven translate offset in logical pixels — X channel.

AppTranslateY

App-driven translate offset in logical pixels — Y channel.

Trait Implementations

impl Clone for AnimProp

fn clone(&self) -> AnimProp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AnimProp

impl Debug for AnimProp

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

Formats the value using the given formatter.

impl Eq for AnimProp

impl Hash for AnimProp

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 AnimProp

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