Struct DisplayManager 

pub struct DisplayManager {
    pub current_session: Option<DisplaySession>,
    pub login_screen: LoginScreen,
    pub showing_login: bool,
    /* private fields */
}

The display manager controls login, sessions, and VT switching.

Fields

current_session: Option<DisplaySession>

Currently active session (if logged in).

login_screen: LoginScreen

Login screen state.

showing_login: bool

Whether the display manager is showing the login screen.

Implementations

impl DisplayManager

pub fn new() -> Self

Create a new display manager with 6 virtual terminals.

pub fn show_login(&mut self)

Show the login screen.

pub fn spawn_session( &mut self, session_type: SessionType, user_id: u32, username: &str, ) -> bool

Spawn a new session for the authenticated user.

pub fn lock_session(&mut self)

Lock the current session.

pub fn unlock_session(&mut self) -> bool

Unlock the current session.

pub fn handle_vt_switch(&mut self, vt_num: u8) -> bool

Handle Ctrl+Alt+F1-F6 virtual terminal switching.

vt_num is 1-6.

pub fn check_idle(&mut self, current_tick: u64)

Check idle timeout and auto-lock if needed.

pub fn set_auto_login(&mut self, username: &str)

Enable auto-login for the given user.

pub fn auto_login(&mut self) -> bool

Attempt auto-login if configured.

pub fn active_vt(&self) -> u8

Get the active VT number.

pub fn get_vt(&self, num: u8) -> Option<&VirtualTerminal>

Get information about a VT.

pub fn session_count(&self) -> usize

Number of active sessions.

pub fn handle_key(&mut self, key: u8) -> bool

Handle a key press, delegating to the login screen when showing.

Returns true if a session was spawned.

pub fn render(&mut self, buf: &mut [u32], width: u32, height: u32)

Render the display manager (login screen or nothing if session active).

impl DisplayManager

pub fn create_user_session( &mut self, user_id: u32, username: &str, session_type: SessionType, ) -> Option<u64>

Create a new user session on the next available VT.

VT assignment: VT7 + session_index.

pub fn switch_to_session(&mut self, target_user_id: u32) -> bool

Switch to a different user’s session by user ID.

The current session is preserved; the display switches to the target session’s VT.

pub fn get_sessions(&self) -> Vec<SessionInfo>

Get information about all active sessions for the DM UI.

pub fn logout_user(&mut self, user_id: u32)

Handle user logout: clean up session and return to login screen.

Trait Implementations

impl Debug for DisplayManager

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

Formats the value using the given formatter.

impl Default for DisplayManager

fn default() -> Self

Returns the “default value” for a type.