TAffix class

Pins child to the top of a CustomScrollView once scrolling reaches it, for sticky toolbars/summary bars inside a scrollable page (Ant Design's Affix equivalent). height must match the child's rendered height, since sliver headers require a fixed extent upfront.

CustomScrollView(
  slivers: [
    TAffix(height: 56, child: TAlignedRow(children: [...])),
    SliverList(...),
  ],
)

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• TAffix

Available extensions

• WidgetX

Constructors

TAffix({Key? key, required Widget child, required double height})

const

Properties

child → Widget

The content to pin once it reaches the top of the viewport.

final

hashCode → int

The hash code for this object.

no setter, inherited

height → double

Fixed height reserved for child in the sliver layout.

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

box({double minW = 0.0, double minH = 0.0, double maxW = double.infinity, double maxH = double.infinity}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a ConstrainedBox to apply layout constraints.

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

card({TCardShadow shadow = TCardShadow.none, EdgeInsetsGeometry padding = const EdgeInsets.all(12), EdgeInsetsGeometry margin = EdgeInsets.zero, BorderRadius? borderRadius, Color? backgroundColor, Color? borderColor, VoidCallback? onTap}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a TCard with a preset shadow depth.

cardLg({EdgeInsetsGeometry padding = const EdgeInsets.all(12), VoidCallback? onTap}) → Widget

Available on Widget, provided by the WidgetX extension

card with a prominent TCardShadow.lg shadow.

cardMd({EdgeInsetsGeometry padding = const EdgeInsets.all(12), VoidCallback? onTap}) → Widget

Available on Widget, provided by the WidgetX extension

card with a standard TCardShadow.md shadow.

cardSm({EdgeInsetsGeometry padding = const EdgeInsets.all(12), VoidCallback? onTap}) → Widget

Available on Widget, provided by the WidgetX extension

card with a subtle TCardShadow.sm shadow.

center({bool when = true}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Center widget.

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

expanded({int flex = 1}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in an Expanded widget.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

padding([double left = 0.0, double top = 0.0, double right = 0.0, double bottom = 0.0]) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with flexible edge control.

paddingSymmetric({double h = 0.0, double v = 0.0}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Padding with symmetric horizontal and vertical spacing.

size({double? w, double? h}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a SizedBox to apply fixed width and/or height.

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

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

visible(bool visible, {bool maintainState = false}) → Widget

Available on Widget, provided by the WidgetX extension

Wraps this widget in a Visibility widget.

when(bool condition) → Widget

Available on Widget, provided by the WidgetX extension

Returns this widget if condition is true, otherwise returns SizedBox.shrink(). Usage: Text('Hello').when(isVisible)

Operators

operator ==(Object other) → bool

The equality operator.

inherited