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WindowInsets

Struct WindowInsets 

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pub struct WindowInsets {
    pub view_padding: EdgeInsets,
    pub view_insets: EdgeInsets,
    pub corner_insets: CornerInsets,
}
Expand description

The inset vocabulary LayoutCtx::window_insets/PaintCtx::window_insets return — lifted because a widget that lays itself out around the status bar, notch, or on-screen keyboard cannot otherwise name the value those accessors hand it. A bar laying out around the iPadOS window control names the corner value, CornerInsets. The window’s inset state, mirroring Flutter’s ViewportMetrics (media_query.dart).

Carries the two per-edge sets a shell transports; the third (the derived safe-area padding) is computed on demand, never stored:

  • view_padding — system-UI-occluded edges (status/navigation bars, display cutout). Never includes the IME.
  • view_insets — fully-obscured area, in practice the on-screen keyboard (IME). The status bar is never part of this on either platform.

All values are logical px (see the module docs). Default is the all-zero state (no occlusion). PartialEq lets a shell compare the freshly-read platform insets against the last-pushed value and skip a no-op set_insets.

Fields§

§view_padding: EdgeInsets

System-UI-occluded edges (status/navigation bars, cutout), in logical px.

§view_insets: EdgeInsets

Fully-obscured edges (the IME/keyboard), in logical px.

§corner_insets: CornerInsets

Window-control corners, in logical px; see CornerInsets.

Implementations§

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impl WindowInsets

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pub fn new(view_padding: EdgeInsets, view_insets: EdgeInsets) -> WindowInsets

Construct from the two transported per-edge sets; corners are CornerInsets::ZERO (see with_corner_insets).

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pub fn with_corner_insets(self, corner_insets: CornerInsets) -> WindowInsets

These insets with the window-control corner_insets set. padding() is unaffected.

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pub fn padding(&self) -> EdgeInsets

The derived safe-area padding: max(0.0, view_padding - view_insets) per edge (Flutter’s formula, media_query.dart:152-170).

This is what a SafeArea widget insets by — where the IME (view_insets) overlaps a system-bar edge (view_padding), that edge’s safe-area padding clamps to zero (the IME already handles keyboard avoidance for that edge). Computed on demand; never transported.

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pub fn consuming( self, left: bool, top: bool, right: bool, bottom: bool, ) -> WindowInsets

These insets with the safe-area padding on each enabled edge marked as consumed — the value a widget that has already padded by those edges hands to its subtree.

Flutter parity: MediaQuery.removePadding as applied by SafeArea. For each enabled edge, view_padding.<edge> is reduced by self.padding().<edge> (saturating at zero); view_insets is left untouched. The invariants are:

  • consuming(..).padding().<edge> == 0.0 on every enabled edge;
  • view_insets is unchanged, so the IME still reaches descendants for keyboard avoidance;
  • disabled edges are unchanged in both sets;
  • consuming(..).corner_insets == self.corner_insets — corners are never consumed;
  • the operation is idempotent — consuming an already-consumed edge is a no-op, which is what makes nested SafeAreas consume only once.

Trait Implementations§

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impl Clone for WindowInsets

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fn clone(&self) -> WindowInsets

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for WindowInsets

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impl Debug for WindowInsets

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

Formats the value using the given formatter. Read more
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impl Default for WindowInsets

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fn default() -> WindowInsets

Returns the “default value” for a type. Read more
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impl PartialEq for WindowInsets

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for WindowInsets

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