RibbonBackground class
Material 3–inspired animated ribbon background.
Features:
- Multiple horizontal ribbons with sine-based flow
- Elevation: shadow + surface tint (M3-style)
- Translucency and optional backdrop blur
- Adaptive blending for light/dark backgrounds
- Animated gradients (hue drift)
- 3D parallax (drag/touch)
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- RibbonBackground
Constructors
-
RibbonBackground.new({Key? key, Color backgroundColor = Colors.transparent, List<
RibbonSpec> ? ribbonSpecs, int ribbonCount = 3, double baseAmplitude = 56.0, double speed = 0.5, double parallaxDepth = 0.22, double colorShiftSpeed = 0.08, bool enableBackdropBlur = true, double backdropBlurSigma = 8.0, Widget? child, Color? primaryForTint}) -
const
Properties
- backdropBlurSigma → double
-
final
- backgroundColor → Color
-
Page background behind ribbons.
final
- baseAmplitude → double
-
Baseline vertical wave amplitude.
final
- child → Widget?
-
Optional foreground child.
final
- colorShiftSpeed → double
-
Speed of animated hue shift in gradients.
final
- enableBackdropBlur → bool
-
Adds a real backdrop blur behind ribbons (Material translucency feel).
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- parallaxDepth → double
-
Parallax amount (0..1).
final
- primaryForTint → Color?
-
Source color for surface tint at elevation. If null, taken from first ribbon's gradient.
final
- ribbonCount → int
-
How many ribbons to auto-generate if ribbonSpecs is null.
final
-
ribbonSpecs
→ List<
RibbonSpec> ? -
Optional explicit ribbon specs; if null, defaults are generated from palette.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- speed → double
-
Global time speed for animation.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< RibbonBackground> -
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