Struct Part 

#[repr(transparent)]
pub struct Part(pub u32);

Sub-region or visual component of a widget used as a style selector key.

Part is a transparent newtype over u32. Named constants mirror LVGL’s lv_part_t vocabulary. Custom part ids are allocated in the id >= 8 range via Part::custom.

Registration policy: Specification Required. Adding a named constant requires a phase-doc amendment that updates the §6.1 table and cites the owning widget phase.

Tuple Fields

0: u32

Implementations

impl Part

pub const MAIN: Self

The main body of the widget (LV_PART_MAIN = 0).

pub const SCROLLBAR: Self

The scroll-bar of a scrollable container (LV_PART_SCROLLBAR = 1).

pub const INDICATOR: Self

The filled portion of a slider or progress bar (LV_PART_INDICATOR = 2).

pub const KNOB: Self

The draggable thumb of a slider or knob widget (LV_PART_KNOB = 3).

pub const SELECTED: Self

The currently selected item in a list or similar widget (LV_PART_SELECTED = 4).

pub const ITEMS: Self

Individual items inside a list or roller (LV_PART_ITEMS = 5).

pub const CURSOR: Self

The text-input cursor (LV_PART_CURSOR = 6).

pub const fn custom(id: u32) -> Self

Construct a custom part id.

By convention id >= 8 to avoid collisions with the named constants above (mirroring LV_PART_CUSTOM_FIRST). Widget phases use this to reserve widget-local part ids without a Specification Required amendment.

Example

use rlvgl_core::style_cascade::Part;
const MY_PART: Part = Part::custom(8);

Trait Implementations

impl Clone for Part

fn clone(&self) -> Part

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Part

impl Debug for Part

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

Formats the value using the given formatter.

impl Eq for Part

impl PartialEq for Part

fn eq(&self, other: &Part) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Part