FSResponsive class

Responsive utility class that provides methods for responsive design with performance optimizations and comprehensive breakpoint handling.

Constructors

FSResponsive({required double screenWidth, FSCustomBreakpoints breakpoints = const FSCustomBreakpoints()})

const

FSResponsive.fromContext(BuildContext context, {FSCustomBreakpoints? breakpoints})

Factory constructor from BuildContext using MediaQuery

factory

FSResponsive.of(double width, {FSCustomBreakpoints? breakpoints})

Factory constructor that creates responsive instance from screen width

factory

Properties

breakpoint → FSBreakpoint

Get the current breakpoint based on screen width with LRU caching

no setter

breakpoints → FSCustomBreakpoints

final

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

screenWidth → double

final

Methods

builder({required Widget builder(FSBreakpoint breakpoint), Widget? fallback}) → Widget

Responsive widget builder for conditional rendering

copyWith({double? screenWidth, FSCustomBreakpoints? breakpoints}) → FSResponsive

Create a copy with updated screen width

hide({required Widget child, bool hideOnXs = false, bool hideOnSm = false, bool hideOnMd = false, bool hideOnLg = false, bool hideOnXl = false, bool hideOnXxl = false, Widget? fallback}) → Widget

Hide widget based on breakpoint (inverse of show)

isBreakpoint(FSBreakpoint breakpoint) → bool

Check if current screen size is exactly a specific breakpoint

isEqualOrLargerThan(FSBreakpoint breakpoint) → bool

Check if current screen size is equal to or larger than a specific breakpoint

isEqualOrSmallerThan(FSBreakpoint breakpoint) → bool

Check if current screen size is equal to or smaller than a specific breakpoint

isLargerThan(FSBreakpoint breakpoint) → bool

Check if current screen size is larger than a specific breakpoint

isSmallerThan(FSBreakpoint breakpoint) → bool

Check if current screen size is smaller than a specific breakpoint

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

show({required Widget child, bool showOnXs = true, bool showOnSm = true, bool showOnMd = true, bool showOnLg = true, bool showOnXl = true, bool showOnXxl = true, Widget? fallback}) → Widget

Conditional rendering based on breakpoint

toString() → String

A string representation of this object.

override

value<T>({T? xs, T? sm, T? md, T? lg, T? xl, T? xxl, required T fallback}) → T

Responsive value selector with efficient fallback logic

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Properties

cacheStats → (int, int, double)

Get cache statistics for performance monitoring

no setter

Static Methods

clearCache() → void

Clear the breakpoint cache (useful for testing and memory management)

layoutBuilder(BuildContext context, {required Widget builder(FSResponsive responsive), FSCustomBreakpoints? breakpoints}) → Widget

Create a responsive layout builder widget

setCacheSize(int size) → void

Set cache size (useful for memory management in constrained environments)

valueBuilder<T>({required BuildContext context, required T valueSelector(FSResponsive responsive), required Widget builder(T value), FSCustomBreakpoints? breakpoints}) → Widget

Create a responsive value builder widget