Roll class

Provide a Roll for Foil.

A gradient in an ancestral Roll may be provided to a descendent Foil as its Foil.gradient if one is not explicitly perscribed in the Foil.

If neither an ancestral Roll nor a Foil dictates its own gradient, then the default is Foils.rainbows.linear.
A descendent that provides its own Foil.gradient will override this gradient.

Animations

This Roll can also serve to provide animation properties to a descendent Foil, regardless if its serving its gradient.

The crinkle parameter defaults to Crinkle.smooth which is not animated (although each Roll has its own AnimationController). A Crinkle dictates speed, intensity, and directionality of animation.

Crinkle.twinkling is a very slow moving preset
Crinkle.vivacious is a highly-animated preset
Build your own or opt to Crinkle.copyWith a preset
- Crinkle.scalar property can be used to invert, scale, or negate axes
- Crinkle.period determines the loop Duration

A Literally Shared `Gradient`

TODO:

Ideally a Roll will allow the definition of a swath of space, dictated by the tree underneath it, to shade with a single larger Gradientfrom which any descendent Foil widgets could be offset/masked.

Inheritance

Mixed-in types

Diagnosticable

Constructors

Roll({Key? key, Gradient? gradient, Crinkle crinkle = Crinkle.smooth, Widget? child}): Provide a Roll for Foil.
const

Properties

child → Widget?: The widget directly below this one in the tree.
final
crinkle → Crinkle: This Roll can also serve to provide animation properties to a descendent Foil, regardless if its serving its gradient.
final
gradient → Gradient?: The Gradient to provide to any children Foil widgets.
final
hashCode → int: The hash code for this object.
no setterinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → RollState: 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.
override
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}) → 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 brief description of this object, usually just the runtimeType and the hashCode.
inherited

Operators

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

Static Methods

of(BuildContext context) → RollState?: Returns the nearest RollState ancestor.