Struct LayerShellManager 

pub struct LayerShellManager { /* private fields */ }

Layer shell manager.

Tracks all layer surfaces and computes exclusive zones for the output.

Implementations

impl LayerShellManager

pub fn new() -> Self

Create a new layer shell manager.

pub fn create_surface( &mut self, surface_id: u32, layer: Layer, namespace: &[u8], ) -> Result<u32, KernelError>

Create a new layer surface.

Returns the layer surface ID assigned by the manager.

pub fn destroy_surface(&mut self, id: u32) -> Result<(), KernelError>

Destroy a layer surface.

pub fn get_surface(&self, id: u32) -> Option<&LayerSurface>

Get a reference to a layer surface.

pub fn get_surface_mut(&mut self, id: u32) -> Option<&mut LayerSurface>

Get a mutable reference to a layer surface.

pub fn configure_surface( &mut self, id: u32, width: u32, height: u32, ) -> Result<u32, KernelError>

Configure a layer surface with its actual dimensions and send a configure serial to the client.

Returns the serial number to be sent in the configure event.

pub fn ack_configure(&mut self, id: u32, serial: u32) -> bool

Handle ack_configure from the client.

pub fn get_surfaces_for_layer(&self, layer: Layer) -> Vec<&LayerSurface>

Get all layer surfaces belonging to a specific layer, sorted by creation order.

pub fn calculate_exclusive_zones(&self) -> (i32, i32, i32, i32)

Calculate the total exclusive zone offsets for an output.

Returns (top, bottom, left, right) pixel offsets that normal windows should respect.

pub fn get_usable_area( &self, output_width: u32, output_height: u32, ) -> UsableArea

Compute the usable area after subtracting all exclusive zones from the full output dimensions.

pub fn surface_count(&self) -> usize

Return the total number of layer surfaces.

Trait Implementations

impl Default for LayerShellManager

fn default() -> Self

Returns the “default value” for a type.