UnderlineTabIndicator class
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 TabIndicatorSize.label,
or the entire tab with TabIndicatorSize.tab.
- Inheritance
- Object
- Diagnosticable
- 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
- insets → EdgeInsetsGeometry
-
Locates the selected tab's underline relative to the tab's boundary. [...]
final
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isComplex → bool
-
Whether this decoration is complex enough to benefit from caching its painting.
read-only, inherited
- 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-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
createBoxPainter(
[VoidCallback onChanged ]) → _UnderlinePainter -
Returns a BoxPainter that will paint this decoration. [...]
override
-
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
thisto another Decoration (which may be of a different class). [...]override -
debugAssertIsValid(
) → bool -
In checked 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. [...]
@mustCallSuper, @protected, inherited
-
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
-
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
toStringDeep. [...]inherited -
toString(
{DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns 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 ==(
dynamic other) → bool -
The equality operator. [...]
inherited