MixBuilder class

Builds widgets with Mix styling and intelligent caching.

MixBuilder optimizes performance by caching ComputedStyle instances and enabling selective widget rebuilds through InheritedModel.

Performance

• Caches ComputedStyle when style hasn't changed
• Uses InheritedModel for selective rebuilds based on spec changes
• Creates fresh MixContext to ensure context values stay current

Example

MixBuilder(
  style: Style(
    $box.color.red(),
    $box.padding(16),
  ),
  builder: (context) {
    final boxSpec = BoxSpec.of(context);
    return Container(
      decoration: boxSpec?.decoration,
      child: Text('Hello'),
    );
  },
)

See also:

• ComputedStyle, for resolved style specifications
• Mix, for style inheritance

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• MixBuilder

Constructors

MixBuilder.new({Key? key, required Style style, required Widget builder(BuildContext), bool inherit = false, List<Type> orderOfModifiers = const []})

const

Properties

builder → Widget Function(BuildContext)

Builds the widget tree.

final

hashCode → int

The hash code for this object.

no setter, inherited

inherit → bool

Whether to merge with inherited styles.

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

orderOfModifiers → List<Type>

The order for applying modifiers.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

style → Style

The style to apply.

final

Methods

createElement() → StatefulElement

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

inherited

createState() → State<MixBuilder>

Creates the mutable state for this widget at a given location in the tree.

override

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