Struct LayerSurface 

pub struct LayerSurface {

    pub id: u32,
    pub surface_id: u32,
    pub layer: Layer,
    pub anchor: Anchor,
    pub exclusive_zone: i32,
    pub margin_top: i32,
    pub margin_bottom: i32,
    pub margin_left: i32,
    pub margin_right: i32,
    pub keyboard_interactivity: KeyboardInteractivity,
    pub desired_width: u32,
    pub desired_height: u32,
    pub actual_width: u32,
    pub actual_height: u32,
    pub namespace: [u8; 64],
    pub namespace_len: usize,
    pub configured: bool,
    pub configure_serial: u32,
    pub mapped: bool,
}

Layer surface configuration.

A layer surface is a surface that is anchored to screen edges and belongs to a specific rendering layer. It can claim an exclusive zone to prevent normal windows from occupying that screen area.

Fields

id: u32

Layer surface object ID

surface_id: u32

Underlying compositor surface ID

layer: Layer

Which layer this surface belongs to

anchor: Anchor

Which screen edges the surface is anchored to

exclusive_zone: i32

Exclusive zone in pixels (-1 = no exclusive zone, 0+ = reserve space)

margin_top: i32

Margin from top edge in pixels

margin_bottom: i32

Margin from bottom edge in pixels

margin_left: i32

Margin from left edge in pixels

margin_right: i32

Margin from right edge in pixels

keyboard_interactivity: KeyboardInteractivity

Keyboard focus mode

desired_width: u32

Requested width (0 = fill available width when anchored)

desired_height: u32

Requested height (0 = fill available height when anchored)

actual_width: u32

Actual configured width (assigned by compositor)

actual_height: u32

Actual configured height (assigned by compositor)

namespace: [u8; 64]

Namespace for grouping (e.g., “panel”, “notifications”, “wallpaper”)

namespace_len: usize

Length of the namespace string

configured: bool

Whether the client has acknowledged the latest configure

configure_serial: u32

Last configure serial sent to client

mapped: bool

Whether the surface is currently mapped (has a buffer and is visible)

Implementations

impl LayerSurface

pub fn new(id: u32, surface_id: u32, layer: Layer) -> Self

Create a new layer surface with default settings.

pub fn set_namespace(&mut self, ns: &[u8])

Set the namespace string for this layer surface.

pub fn namespace_bytes(&self) -> &[u8]

Get the namespace as a byte slice.