Module runtime 

Structs

ComposeGuard

Composer

FocusManager

A manager for programmatic focus navigation.

FocusRequester

A handle that can programmatically request focus for a widget.

Frame

Frame - output of composition for a tick: scene + input/semantics.

HitRegion

Hit-test region in physical pixels (rect carries px magnitudes, like Compose Rect).

Scheduler

SemNode

Flattened semantics node produced by layout_and_paint.

Enums

FocusDirection

Direction for focus movement.

Constants

CLEAR_FOCUS_MARKER

Sentinel value meaning “clear focus entirely”.

COMPOSER

Functions

focus_group_chain

Sub-chain of ids sharing the focused element’s focus group. Returns None when focus is outside any group (full chain applies). Tab and spatial navigation both scope to this so modals trap focus.

remember

Slot-based remember (sequential composition only). This prevents state aliasing when the composition tree structure changes between frames

remember_state

Raw slot state (Rc<RefCell<T>>). Writes via borrow_mut() don’t request a frame - prefer [remember_mutable] if a write must always recompose.

remember_state_with_key

Key-based variant of remember_state. Same no-frame-on-write caveat.

remember_with_key

Key-based remember.

spatial_focus_next

Find the next focusable element in a given spatial direction.

take_focus_request

unique_component_id

Returns a fresh unique component id. See [COMPONENT_ID].