ColorAverager class

This widget calculates the average color of the overlapping area between its child and a specified ColorExtractor or RepaintBoundary widget, identified by its GlobalKey boundaryKey.

Inheritance

Constructors

ColorAverager({Key? key, required GlobalKey<State<StatefulWidget>> boundaryKey, required Widget child, ValueChanged<Color?>? onChanged, ColorAveragerController? controller, Color? fillerColor})
Creates a new ColorAverager widget.
const

Properties

boundaryKey → GlobalKey<State<StatefulWidget>>
The GlobalKey of the RepaintBoundary or ColorExtractor widget to calculate the average color from.
final
child → Widget
The child widget whose intersection with the RepaintBoundary or ColorExtractor widget will be used to calculate the average color.
final
controller → ColorAveragerController?
An optional ColorAveragerController object that can be used to programmatically calculate the average color.
final
fillerColor → Color?
An optional color to use for pixels with an alpha value of 0.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onChanged → ValueChanged<Color?>?
The callback function that returns the calculated average color.
final
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() → State<ColorAverager>
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}) → 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