AbsoluteItem class abstract

An interface for widgets that support absolute positioning within a layout container.

AbsoluteItem defines the contract for widgets that can be positioned absolutely within their parent layout container. Absolute positioning removes the widget from the normal document flow and places it at specific coordinates relative to the parent's bounds.

This interface provides factory constructors for creating absolute positioned widgets, either with a direct child widget or with a builder function that receives layout information.

Implemented types

Constructors

AbsoluteItem({Key? key, int? paintOrder, SizeUnit? width, SizeUnit? height, SizeUnit? minWidth, SizeUnit? maxWidth, SizeUnit? minHeight, SizeUnit? maxHeight, PositionUnit? top, PositionUnit? left, PositionUnit? bottom, PositionUnit? right, double? aspectRatio, required Widget child})
Creates an absolutely positioned item with a direct child widget.
const
factory
AbsoluteItem.builder({Key? key, int? paintOrder, SizeUnit? width, SizeUnit? height, SizeUnit? minWidth, SizeUnit? maxWidth, SizeUnit? minHeight, SizeUnit? maxHeight, PositionUnit? top, PositionUnit? left, PositionUnit? bottom, PositionUnit? right, double? aspectRatio, required Widget builder(BuildContext context, LayoutBox box)})
Creates an absolutely positioned item with a builder function.
const
factory

Properties

aspectRatio → double?
The aspect ratio constraint (width/height) for this item.
no setterinherited
bottom → PositionUnit?
The offset from the bottom edge of the parent container.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
height → SizeUnit?
The preferred height of this item.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
left → PositionUnit?
The offset from the left edge of the parent container.
no setterinherited
maxHeight → SizeUnit?
The maximum height constraint for this item.
no setterinherited
maxWidth → SizeUnit?
The maximum width constraint for this item.
no setterinherited
minHeight → SizeUnit?
The minimum height constraint for this item.
no setterinherited
minWidth → SizeUnit?
The minimum width constraint for this item.
no setterinherited
paintOrder → int?
The paint order for this item, controlling drawing order when overlapping. Lower values are painted first (behind), higher values are painted last (on top).
no setterinherited
The offset from the right edge of the parent container.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
top → PositionUnit?
The offset from the top edge of the parent container.
no setterinherited
width → SizeUnit?
The preferred width of this item.
no setterinherited

Methods

createElement() → Element
Inflates this configuration to a concrete instance.
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
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent 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
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

Operators

operator ==(Object other) → bool
The equality operator.
inherited