ContrastPreviewCard class

Reusable contrast preview for one caller-supplied foreground/background pair. It does not change NeonTheme, save colors or run a global audit.

Inheritance

Constructors

ContrastPreviewCard({Key? key, required Color foreground, required Color background, required String sampleText, double? threshold, bool largeText = false, VoidCallback? onTap, String? semanticLabel, String passLabel = 'Pass', String failLabel = 'Needs more contrast'})

Properties

background → Color
final
contrastRatio → double
no setter
effectiveThreshold → double
no setter
failLabel → String
final
foreground → Color
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
largeText → bool
Large text defaults to the WCAG AA large-text threshold of 3:1.
final
onTap → VoidCallback?
final
passes → bool
no setter
passLabel → String
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sampleText → String
final
semanticLabel → String?
final
threshold → double?
WCAG contrast threshold. Defaults to AA normal text 4.5:1.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
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