BorderRadius class Null safety

An immutable set of radii for each corner of a rectangle.

Used by BoxDecoration when the shape is a BoxShape.rectangle.

The BorderRadius class specifies offsets in terms of visual corners, e.g. topLeft. These values are not affected by the TextDirection. To support both left-to-right and right-to-left layouts, consider using BorderRadiusDirectional, which is expressed in terms that are relative to a TextDirection (typically obtained from the ambient Directionality).

Inheritance

Constructors

BorderRadius.all(Radius radius): Creates a border radius where all radii are radius.
const
BorderRadius.circular(double radius): Creates a border radius where all radii are Radius.circular(radius).
BorderRadius.horizontal({Radius left = Radius.zero, Radius right = Radius.zero}): Creates a horizontally symmetrical border radius where the left and right sides of the rectangle have the same radii.
const
BorderRadius.only({Radius topLeft = Radius.zero, Radius topRight = Radius.zero, Radius bottomLeft = Radius.zero, Radius bottomRight = Radius.zero}): Creates a border radius with only the given non-zero values. The other corners will be right angles.
const
BorderRadius.vertical({Radius top = Radius.zero, Radius bottom = Radius.zero}): Creates a vertically symmetric border radius where the top and bottom sides of the rectangle have the same radii.
const

Properties

bottomLeft → Radius: The bottom-left Radius.
final
bottomRight → Radius: The bottom-right Radius.
final
hashCode → int: The hash code for this object.
read-onlyinherited
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
topLeft → Radius: The top-left Radius.
final
topRight → Radius: The top-right Radius.
final

Methods

add(BorderRadiusGeometry other) → BorderRadiusGeometry: Returns the sum of two BorderRadiusGeometry objects.
override
copyWith({Radius? topLeft, Radius? topRight, Radius? bottomLeft, Radius? bottomRight}) → BorderRadius: Returns a copy of this BorderRadius with the given fields replaced with the new values.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed.
inherited
resolve(TextDirection? direction) → BorderRadius: Convert this instance into a BorderRadius, so that the radii are expressed for specific physical corners (top-left, top-right, etc) rather than in a direction-dependent manner.
override
subtract(BorderRadiusGeometry other) → BorderRadiusGeometry: Returns the difference between two BorderRadiusGeometry objects.
override
toRRect(Rect rect) → RRect: Creates an RRect from the current border radius and a Rect.
toString() → String: A string representation of this object.
inherited

Operators

operator %(double other) → BorderRadius: Computes the remainder of each corner by the given factor.
override
operator *(double other) → BorderRadius: Scales each corner of the BorderRadius by the given factor.
override
operator +(BorderRadius other) → BorderRadius: Returns the sum of two BorderRadius objects.
operator -(BorderRadius other) → BorderRadius: Returns the difference between two BorderRadius objects.
operator /(double other) → BorderRadius: Divides each corner of the BorderRadius by the given factor.
override
operator ==(Object other) → bool: The equality operator.
inherited
operator unary-() → BorderRadius: Returns the BorderRadius object with each corner negated.
override
operator ~/(double other) → BorderRadius: Integer divides each corner of the BorderRadius by the given factor.
override

Static Methods

lerp(BorderRadius? a, BorderRadius? b, double t) → BorderRadius?: Linearly interpolate between two BorderRadius objects.
override

Constants

zero → const BorderRadius: A border radius with all zero radii.
BorderRadius.all(Radius.zero)