Struct WindowAnim 

pub struct WindowAnim { /* private fields */ }

The animations one decorated window is running.

Focus and hover advance independently: a window can gain focus while the pointer leaves a button, and forcing them onto one timeline would make whichever started second jump.

Implementations

impl WindowAnim

pub const fn new(focused: bool) -> Self

An animator settled at focused, with nothing hovered.

Settled, not animating toward it: a window that appears focused should be drawn focused, not fade in from unfocused on its first frame.

pub const fn retarget_focus(&mut self, focused: bool)

Aim at a new focus state.

Retargeting to what it is already aiming at does nothing — otherwise a caller that reports focus every frame would restart the timeline every frame and the window would never finish transitioning.

pub const fn retarget_hover(&mut self, hover: HoverButton)

Aim at a new hovered button.

Moving between buttons restarts from zero on the new one rather than carrying the old one’s progress across: they are different highlights in different places, and a value carried over would make the new button appear already half-lit.

pub const fn snap(&mut self)

Jump to the targets, running nothing.

For a caller that wants the end state now — a window appearing, a theme with animations turned off, a session resuming.

pub fn tick(&mut self, dt: Duration, duration: Duration) -> bool

Advance by dt, over a transition lasting duration.

Returns whether anything is still animating, which is what tells a caller to schedule another frame.

A zero duration snaps. That is not an edge case to tolerate but the documented way to turn animations off — glass-minimal sets it — and dividing by it instead would produce an infinity that the clamp turns into an instant jump anyway, less legibly. A Duration cannot be negative, so a caller converting Theme::animation_duration_ms must map a negative value to zero itself to get the same snap.

pub const fn is_animating(&self) -> bool

Whether anything is still moving.

pub const fn focus_progress(&self) -> f32

How far through the focus transition, 0..=1.

pub const fn hover_progress(&self) -> f32

How far through the hover transition, 0..=1.

pub const fn hover_painted(&self) -> HoverButton

Which button is being drawn highlighted.

pub const fn apply_to(&self, state: &mut WindowState)

Write the current progress into a state for the renderer.

Trait Implementations

impl Clone for WindowAnim

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 WindowAnim

impl Debug for WindowAnim

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

Formats the value using the given formatter.

impl Default for WindowAnim

fn default() -> Self

Returns the “default value” for a type.