Enum ToastPosition 

pub enum ToastPosition {
    TopEnd,
    TopStart,
    TopCenter,
    BottomEnd,
    BottomStart,
    BottomCenter,
}

Where the toast stack anchors within the window.

Positions are expressed in logical terms (Start / End) along the horizontal axis, so they automatically mirror under crate::LayoutDirection::Rtl without per-application changes — the same ABDD principle that governs sidebars and header end-controls.

Choosing a position

• TopEnd (default) — top-right under LTR, top-left under RTL. Recommended for application-internal notifications because the bottom half of the window is typically reserved for primary content (previews, editors, lists).
• BottomEnd — bottom-right under LTR. Matches the OS-level notification center convention on macOS / GNOME / Windows.
• TopStart / BottomStart — opposite horizontal edges from the End variants.
• TopCenter / BottomCenter — centered horizontally. Useful for modal-feeling messages.

Stack growth direction

New toasts are inserted so that the most recent toast is closest to the anchor edge:

• Top*: new toasts appear below older ones; the newest sits closest to the top edge.
• Bottom*: new toasts appear above older ones; the newest sits closest to the bottom edge.

The engine is responsible for honoring this invariant; applications only push to the back of their Vec<Toast<_>> in chronological order.

Variants

TopEnd

LTR=top-right, RTL=top-left. The default.

TopStart

LTR=top-left, RTL=top-right.

TopCenter

Horizontally centered, anchored to the top edge.

BottomEnd

LTR=bottom-right, RTL=bottom-left.

BottomStart

LTR=bottom-left, RTL=bottom-right.

BottomCenter

Horizontally centered, anchored to the bottom edge.

Implementations

impl ToastPosition

pub fn is_top(self) -> bool

Whether this position anchors to the top edge of the window. Engines use this to decide stack growth direction (top anchors grow downward; bottom anchors grow upward).

pub fn is_bottom(self) -> bool

Whether this position anchors to the bottom edge of the window.

Trait Implementations

impl Clone for ToastPosition

fn clone(&self) -> ToastPosition

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ToastPosition

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

Formats the value using the given formatter.

impl Default for ToastPosition

fn default() -> ToastPosition

Returns the “default value” for a type.

impl Hash for ToastPosition

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ToastPosition

fn eq(&self, other: &ToastPosition) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ToastPosition

impl Eq for ToastPosition

impl StructuralPartialEq for ToastPosition