Struct LayerManager

#[non_exhaustive]
pub struct LayerManager {}

Type for managing the currently active layers.

Internally a stack-like datastructure is used to keep track of the order in which the layers got activated. When pushing a new layer ID to the LayerManager it will become the active one and a LayerManagerEntry is returned that can be used to deactive the layer again.

Implementations

impl LayerManager

pub fn new() -> Self

Creates a new LayerManager.

pub fn push(&self, layer: LayerId) -> LayerManagerEntry

Sets the active layer to the layer with the specified ID.

pub fn remove(&self, entry: LayerManagerEntry) -> LayerId

Deactivates the layer that was pushed to the stack with the specified LayerManagerEntry.

pub fn active(&self) -> LayerId

Returns the ID of the currently active layer (i.e. the layer ID that was last pushed to the stack).

Trait Implementations

impl Clone for LayerManager

fn clone(&self) -> LayerManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for LayerManager

fn default() -> LayerManager

Returns the “default value” for a type.

impl Copy for LayerManager