RingBorder class

A border that fits a ring-circle within the available space.

Typically used with ShapeDecoration to draw a circle.

The dimensions assume that the border is being used in a square space. When applied to a rectangular space, the border paints in the center of the rectangle.

See also:

• CircleBorder, which is the parent implementation for this class.
• Border, which, when used with BoxDecoration, can also describe a circle.

Inheritance

• Object
• ShapeBorder
• OutlinedBorder
• CircleBorder
• RingBorder

Constructors

RingBorder({BorderSide side = BorderSide.none})

const

Properties

dimensions → EdgeInsetsGeometry

The widths of the sides of this border represented as an EdgeInsets.

no setter, inherited

eccentricity → double

Defines the ratio (0.0-1.0) from which the border will deform to fit a rectangle. When 0.0, it draws a circle touching at least two sides of the rectangle. When 1.0, it draws an oval touching all sides of the rectangle.

final, inherited

hashCode → int

The hash code for this object.

no setter, inherited

preferPaintInterior → bool

Reports whether paintInterior is implemented.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

side → BorderSide

The border outline's color and weight.

final, inherited

Methods

add(ShapeBorder other, {bool reversed = false}) → ShapeBorder?

Attempts to create a new object that represents the amalgamation of this border and the other border.

inherited

copyWith({BorderSide? side}) → RingBorder

Returns a copy of this OutlinedBorder that draws its outline with the specified side, if side is non-null.

override

getInnerPath(Rect rect, {TextDirection? textDirection}) → Path

Create a Path that describes the inner edge of the border.

inherited

getOuterPath(Rect rect, {TextDirection? textDirection}) → Path

Create a Path that describes the outer edge of the border.

inherited

lerpFrom(ShapeBorder? a, double t) → ShapeBorder?

Linearly interpolates from another ShapeBorder (possibly of another class) to this.

inherited

lerpTo(ShapeBorder? b, double t) → ShapeBorder?

Linearly interpolates from this to another ShapeBorder (possibly of another class).

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

paint(Canvas canvas, Rect rect, {TextDirection? textDirection}) → void

Paints the border within the given Rect on the given Canvas.

override

paintInterior(Canvas canvas, Rect rect, Paint paint, {TextDirection? textDirection}) → void

Paint a canvas with the appropriate shape.

inherited

scale(double t) → ShapeBorder

Creates a copy of this border, scaled by the factor t.

override

toString() → String

A string representation of this object.

inherited

Operators

operator +(ShapeBorder other) → ShapeBorder

Creates a new border consisting of the two borders on either side of the operator.

inherited

operator ==(Object other) → bool

The equality operator.

inherited