UnderlineTabIndicator class Null safety
Used with TabBar.indicator to draw a horizontal line below the selected tab.
The selected tab underline is inset from the tab's boundary by insets. The borderSide defines the line's color and weight.
The TabBar.indicatorSize property can be used to define the indicator's bounds in terms of its (centered) widget with TabBarIndicatorSize.label, or the entire tab with TabBarIndicatorSize.tab.
- Inheritance
-
- Object
- Decoration
- UnderlineTabIndicator
Constructors
- UnderlineTabIndicator({BorderSide borderSide = const BorderSide(width: 2.0, color: Colors.white), EdgeInsetsGeometry insets = EdgeInsets.zero})
-
Create an underline style selected tab indicator.
const
Properties
- borderSide → BorderSide
-
The color and weight of the horizontal line drawn below the selected tab.
final
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- insets → EdgeInsetsGeometry
-
Locates the selected tab's underline relative to the tab's boundary.
final
- isComplex → bool
-
Whether this decoration is complex enough to benefit from caching its painting.
read-onlyinherited
- padding → EdgeInsetsGeometry?
-
Returns the insets to apply when using this decoration on a box
that has contents, so that the contents do not overlap the edges
of the decoration. For example, if the decoration draws a frame
around its edge, the padding would return the distance by which
to inset the children so as to not overlap the frame.
read-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
createBoxPainter(
[VoidCallback? onChanged]) → BoxPainter -
Returns a BoxPainter that will paint this decoration.
override
-
debugAssertIsValid(
) → bool -
In debug mode, throws an exception if the object is not in a
valid configuration. Otherwise, returns true.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void - Add additional properties associated with the node.
-
getClipPath(
Rect rect, TextDirection textDirection) → Path -
Returns a closed Path that describes the outer edge of this decoration.
override
-
hitTest(
Size size, Offset position, {TextDirection? textDirection}) → bool -
Tests whether the given point, on a rectangle of a given size,
would be considered to hit the decoration or not. For example,
if the decoration only draws a circle, this function might
return true if the point was inside the circle and false
otherwise.
inherited
-
lerpFrom(
Decoration? a, double t) → Decoration? -
Linearly interpolates from another Decoration (which may be of a
different class) to
this
.override -
lerpTo(
Decoration? b, double t) → Decoration? -
Linearly interpolates from
this
to another Decoration (which may be of a different class).override -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringShort(
) → String -
A brief description of this object, usually just the runtimeType and the
hashCode.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited