TapTargetSizeRule class

Flags interactive widgets whose tap target is smaller than minimumSize in either dimension.

Defaults to 48x48dp, the Material/WCAG 2.5.5 minimum. Which widget types count as "interactive" and what the minimum is are both overridable — the hook for teams enforcing their own design-system tap-size token instead of (or on top of) the platform default.

Inheritance

• Object
• A11yRule
• TapTargetSizeRule

Constructors

TapTargetSizeRule({double minimumSize = 48.0, Set<Type> interactiveTypes = defaultInteractiveTypes})

const

Properties

description → String

Short human-readable description of what this rule checks.

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Stable identifier used in A11yViolation.ruleId and reports.

no setter, override

interactiveTypes → Set<Type>

final

minimumSize → double

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

check(List<A11yElementInfo> elements) → List<A11yViolation>

Inspects elements — a snapshot of the tree captured by the ElementTreeWalker — and returns any violations found.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

defaultInteractiveTypes → const Set<Type>

Common interactive widgets from both Material and Cupertino.