Fill

Strategy module: appdimens_fill · part of the AppDimens Flutter family

What it is

Uses the larger of the two axis ratios, guaranteeing the element always covers its target area (it may overflow).

Calculation used

$\text{text} \text{out} = \text{b} \times \text{max}(\text{s\_min}/300, \text{s\_max}/533) $

The default path reuses the memoized factor after the max() is resolved per snapshot.

How to use

import 'package:appdimens_fill/appdimens_fill.dart';
final size = 16.flsdp;   // cover-style sizing

Why use it

Mirrors BoxFit.cover semantics for dimensioning: never leave gaps, accept cropping.

When to use it

Backgrounds, hero images, splash art, decorative surfaces.

Advantages & trade-offs

✅ Advantages	⚠️ Trade-offs
No empty space · simple mental model (cover)
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Recommended usage strategy

Pair with clipping (ClipRect) when overflow must be hidden.

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AppDimens Flutter 3.2.0 — see MATHEMATICS-AND-CALCULUS.md for the formal derivation.