pub struct AnimSpec {
pub keyframes: Vec<Keyframe>,
pub enter: Option<Enter>,
pub exit: Option<Enter>,
pub iterations: Option<f32>,
}Expand description
Per-node animation declarations. Boxed on NodeSpec: enter and
exit are 60 bytes each and almost every node has neither.
Fields§
§keyframes: Vec<Keyframe>CSS-style stops for the animatable slots (see crate::keyframes):
with a transition, the slots a stop names cycle through the stops
over the transition’s duration, in its repeat direction, offset by
its delay_ms — forever, and without the view redrawing. Slots no
stop names still tween toward what the view declares. Empty = none.
enter: Option<Enter>Where this node’s slots start the first frame it is seen (see
crate::enter): with a transition, the slots it names ease in
from there instead of snapping — dx/dy slide the node in from
that far away, bg fades it in. A node that vanishes and returns
enters again. None = first sight snaps.
exit: Option<Enter>Where this node’s slots end the frame after the view stops
declaring it (see crate::depart). An exit is an Enter read
the other way: with a transition, the departing subtree is copied
out of the last frame that had it and replayed — frozen where
layout left it, on top, inert — while the slots this names ease
from where they were toward what it declares. Needs a stable key
across frames, and a transition with a duration; without both, a
removed node vanishes at once as it always did.
iterations: Option<f32>How many times the keyframes cycle runs (CSS’s
animation-iteration-count, backlog F133); None, the default, is
for ever. A finite cycle plays from the first frame its node is
declared with it, holds its first stop through its delay, and
rests where its last iteration ended once it is over, owing no
frame (CSS’s animation-fill-mode: both). A fraction of an
iteration ends partway through one.