Struct Layer 

pub struct Layer {
    pub ocg_id: u32,
    pub name: String,
    pub intent: LayerIntent,
    pub locked: bool,
    pub usage: LayerUsage,
    pub creator_info: Option<CreatorInfo>,
    pub default_visible: bool,
}

One Optional Content Group (PDF “layer”).

Fields

ocg_id: u32

PDF object number of the OCG dict — stable across renders and the canonical key for matching layers to display-list OcgGroup elements.

name: String

/Name — UTF-8 decoded display label for layer panels.

intent: LayerIntent

/Intent — author’s hint about which contexts this layer is meaningful in. Default View.

locked: bool

True when listed in /OCProperties /D /Locked. UI consumers should disable user-driven toggling for locked layers; the reader does not enforce this.

usage: LayerUsage

/Usage sub-dict — context-specific hints (view/print/export state, zoom range, language, page-element role, etc.).

creator_info: Option<CreatorInfo>

/CreatorInfo on the OCG itself, if present. The same sub-dict can also appear under /Usage; Phase 1 captures both.

default_visible: bool

Initial visibility under the default configuration. Derived from membership in /OCProperties /D /OFF (false) or /ON (true); absent OCGs default to true per ISO 32000-2.

Trait Implementations

impl Clone for Layer

fn clone(&self) -> Layer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Layer

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

Formats the value using the given formatter.