Struct WindowManager 

pub struct WindowManager { /* private fields */ }

Manages per-window WidgetTrees and window lifecycle.

The primary window (WindowId::PRIMARY) is always present and cannot be destroyed. Secondary windows are created via create_window and removed via destroy_window.

Implementations

impl WindowManager

pub fn new(primary_rect: Rect) -> Self

Create a new manager with the primary window having the given root rect.

pub fn create_window(&mut self, config: WindowConfig) -> WindowId

Create a secondary window with the given configuration, returning its id.

The new window’s widget tree is initialised with a root rect matching the config’s width/height dimensions.

pub fn destroy_window(&mut self, id: WindowId) -> Result<(), UiError>

Destroy a secondary window, freeing its widget tree.

Errors

Returns an error if id is WindowId::PRIMARY or does not exist.

pub fn tree(&self, id: WindowId) -> Option<&WidgetTree>

Borrow the WidgetTree for a window.

pub fn tree_mut(&mut self, id: WindowId) -> Option<&mut WidgetTree>

Mutably borrow the WidgetTree for a window.

pub fn config(&self, id: WindowId) -> Option<&WindowConfig>

Borrow the WindowConfig for a window.

pub fn window_ids(&self) -> Vec<WindowId>

Return a sorted list of all open window ids.

pub fn window_count(&self) -> usize

Return the number of currently open windows.

pub fn channel(&self) -> &WindowChannel

Borrow the shared cross-window communication channel.

pub fn resize_window(&mut self, id: WindowId, width: f32, height: f32)

Update a window’s logical dimensions and reinitialise its widget tree.

This is a blunt resize: all existing widget nodes are dropped and the tree is recreated with only the root node. Adapters that cache the tree contents should rebuild after calling this method.

Trait Implementations

impl Default for WindowManager

fn default() -> Self

Returns the “default value” for a type.