Struct LocalWindowState 

pub struct LocalWindowState;

The window a composable is drawn in.

WindowModifierExt::window provides this to everything composed inside the window it declares, on every platform, so window content reads the window it lives in rather than taking it as an argument:

Box(
    Modifier::empty().window(WindowConfig::borderless_for_state("Pet", state)),
    BoxSpec::default(),
    || Pet(),
);

#[composable]
fn Pet() {
    let window = LocalWindowState::current();
    let at = window.and_then(WindowState::position);
}

Implementations

impl LocalWindowState

pub fn current() -> Option<WindowState>

The nearest enclosing window’s state, or None for content that is not inside a window of its own.

Reading it subscribes the calling composable to changes the way any other composition local does.

pub fn provides(state: Option<WindowState>) -> ProvidedValue

Hands a window state to a subtree. The window modifier does this itself; call it to stand a subtree in for a window of its own.