BreakpointSpec class interface

A contract for defining layout breakpoints based on screen width.

This interface class ensures that any implementing class or enum provides a breakpoint value, which represents the minimum screen width (in logical pixels) at which the breakpoint becomes active.

Typically used with ResponsiveBreakpointTheme to adapt layouts responsively.

Example:

enum MyBreakpoints implements BreakpointSpec {
  sm(breakpoint: 600),
  md(breakpoint: 960),
  lg(breakpoint: 1280);

  @override
  final double breakpoint;

  const MyBreakpoints({required this.breakpoint});
}

Available extensions

• BreakpointComparison

Constructors

BreakpointSpec({required double breakpoint})

Creates a BreakpointSpec with a required breakpoint value.

const

Properties

breakpoint → double

The minimum width (in logical pixels) at which this breakpoint applies.

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

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 <(BreakpointSpec other) → bool

Available on BreakpointSpec, provided by the BreakpointComparison extension

Returns true if this breakpoint is less than other.

operator <=(BreakpointSpec other) → bool

Available on BreakpointSpec, provided by the BreakpointComparison extension

Returns true if this breakpoint is less than or equal to other.

operator ==(Object other) → bool

The equality operator.

inherited

operator >(BreakpointSpec other) → bool

Available on BreakpointSpec, provided by the BreakpointComparison extension

Returns true if this breakpoint is greater than other.

operator >=(BreakpointSpec other) → bool

Available on BreakpointSpec, provided by the BreakpointComparison extension

Returns true if this breakpoint is greater than or equal to other.