OverflowBox class

A widget that imposes different constraints on its child than it gets from its parent, possibly allowing the child to overflow the parent.

This is useful when you want the child to be laid out as if it had more (or less) space than the parent provides. The OverflowBox itself reports its own size based on the parent constraints, but the child may be larger or smaller.

OverflowBox(
  minWidth: 0,
  maxWidth: 100,
  child: Text('This text can be up to 100 columns wide'),
)
Inheritance

Constructors

OverflowBox({double? minWidth, double? maxWidth, double? minHeight, double? maxHeight, Alignment alignment = Alignment.center, Widget? child, Key? key})

Properties

alignment → Alignment
How to align the child within this widget's bounds.
final
child → Widget?
finalinherited
children → List<Widget>
Child widgets that receive forwarded messages.
no setterinherited
debugRenderObjectPassthrough → bool
Whether this widget is intentionally transparent to render-object layouts.
no setterinherited
focusable → bool
Whether this widget can receive keyboard focus.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
id → String
Unique identifier for this widget.
no setterinherited
key → Key?
Key for preserving widget identity.
finalinherited
maxHeight → double?
The maximum height constraint to impose on the child. If null, the parent's max height constraint is used.
final
maxWidth → double?
The maximum width constraint to impose on the child. If null, the parent's max width constraint is used.
final
minHeight → double?
The minimum height constraint to impose on the child. If null, the parent's min height constraint is used.
final
minWidth → double?
The minimum width constraint to impose on the child. If null, the parent's min width constraint is used.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
theme → Theme
Access the current theme.
no setterinherited

Methods

buildCachedView<T>(T builder(), Object? cacheKey) → T
Returns a cached view if the cache key matches.
inherited
createRenderObject() → RenderObject
override
didUnmountRenderObject(RenderObject renderObject) → void
inherited
handleInit() → Cmd?
Override this instead of init for widget-specific initialization.
inherited
handleIntercept(Msg msg) → (Widget, Cmd?)
Override this to handle messages before they reach children.
inherited
handleUpdate(Msg msg) → (Widget, Cmd?)
Override this to handle messages specific to this widget.
inherited
init() → Cmd?
Called once when the widget is first mounted.
inherited
invalidateCachedView() → void
Clears any cached view for this widget.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
update(Msg msg) → (Model, Cmd?)
Handles messages by forwarding to children then calling handleUpdate.
inherited
updateRenderObject(RenderObject renderObject) → void
override
view() → Object
Renders the widget to a string or View.
override

Operators

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