MaterialStateUnderlineInputBorder class abstract

Defines a UnderlineInputBorder that is also a MaterialStateProperty.

This class exists to enable widgets with UnderlineInputBorder valued properties to also accept MaterialStateProperty<UnderlineInputBorder> values. A material state input border property represents a text style which depends on a widget's "interactive state". This state is represented as a Set of MaterialStates, like MaterialState.pressed, MaterialState.focused and MaterialState.hovered.

MaterialStateUnderlineInputBorder should only be used with widgets that document their support, like InputDecoration.border.

To use a MaterialStateUnderlineInputBorder, you can either:

  1. Create a subclass of MaterialStateUnderlineInputBorder and implement the abstract resolve method.
  2. Use MaterialStateUnderlineInputBorder.resolveWith and pass in a callback that will be used to resolve the color in the given states.

If a MaterialStateUnderlineInputBorder is used for a property or a parameter that doesn't support resolving MaterialStateProperty<UnderlineInputBorder>s, then its default color value will be used for all states.

To define a const MaterialStateUnderlineInputBorder, you'll need to extend MaterialStateUnderlineInputBorder and override its resolve method. You'll also need to provide a defaultValue to the super constructor, so that we can know at compile-time what its default color is.

Implemented types


Abstract const constructor. This constructor enables subclasses to provide const constructors so that they can be used in const expressions.
MaterialStateUnderlineInputBorder.resolveWith(MaterialPropertyResolver<InputBorder> callback)
Creates a MaterialStateUnderlineInputBorder from a MaterialPropertyResolver<InputBorder> callback function.


borderRadius BorderRadius
The radii of the border's rounded rectangle corners.
borderSide BorderSide
Defines the border line's color and weight.
dimensions EdgeInsetsGeometry
The widths of the sides of this border represented as an EdgeInsets.
no setterinherited
hashCode int
The hash code for this object.
no setterinherited
isOutline bool
True if this border will enclose the InputDecorator's container.
no setterinherited
preferPaintInterior bool
Reports whether paintInterior is implemented.
no setterinherited
runtimeType Type
A representation of the runtime type of the object.
no setterinherited


add(ShapeBorder other, {bool reversed = false}) ShapeBorder?
Attempts to create a new object that represents the amalgamation of this border and the other border.
copyWith({BorderSide? borderSide, BorderRadius? borderRadius}) UnderlineInputBorder
Creates a copy of this input border with the specified borderSide.
getInnerPath(Rect rect, {TextDirection? textDirection}) Path
Create a Path that describes the inner edge of the border.
getOuterPath(Rect rect, {TextDirection? textDirection}) Path
Create a Path that describes the outer edge of the border.
lerpFrom(ShapeBorder? a, double t) ShapeBorder?
Linearly interpolates from another ShapeBorder (possibly of another class) to this.
lerpTo(ShapeBorder? b, double t) ShapeBorder?
Linearly interpolates from this to another ShapeBorder (possibly of another class).
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
paint(Canvas canvas, Rect rect, {double? gapStart, double gapExtent = 0.0, double gapPercentage = 0.0, TextDirection? textDirection}) → void
Draw a horizontal line at the bottom of rect.
paintInterior(Canvas canvas, Rect rect, Paint paint, {TextDirection? textDirection}) → void
Paint a canvas with the appropriate shape.
resolve(Set<MaterialState> states) InputBorder
Returns a InputBorder that's to be used when a Material component is in the specified state.
scale(double t) UnderlineInputBorder
Creates a copy of this border, scaled by the factor t.
toString() String
A string representation of this object.


operator +(ShapeBorder other) ShapeBorder
Creates a new border consisting of the two borders on either side of the operator.
operator ==(Object other) bool
The equality operator.