FrostBlurLayer class

A layer widget that applies a frosted glass blur and distortion shader to its child. Similar to FractalBlurLayer, but based on a noise-driven frosty diffusion pattern. Use shape and borderRadius to clip the output to rounded rectangles or circles.

Inheritance

Constructors

FrostBlurLayer({Key? key, required Widget child, double? width, double? height, BoxShape shape = BoxShape.rectangle, double noiseScale = 6.0, double distortion = 0.045, double directionalMix = 0.25, double iterations = 12, double blend = 1.0, bool enabled = true, bool useBackdrop = false, BorderRadius? borderRadius})
const

Properties

blend → double
Mix between original content (0) and fully frosted result (1).
final
borderRadius → BorderRadius?
Optional radius used to clip the shader output when shape is rectangle.
final
child → Widget
Content captured by the shader in non-backdrop mode.
final
directionalMix → double
Mix between vertical streaking (0) and isotropic distortion (1).
final
distortion → double
Overall distortion strength (typical range 0.0–0.08).
final
enabled → bool
When false, the shader is bypassed and child is returned directly.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double?
Optional explicit height of the render area.
final
iterations → double
Number of iterative distortion steps (1–32). Higher values = smoother.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
noiseScale → double
Frequency of the noise field that defines the frost pattern.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
shape → BoxShape
Clip shape for the shader output.
final
useBackdrop → bool
When true, renders using BackdropFilter so the shader samples from the scene behind this layer instead of the provided child.
final
width → double?
Optional explicit width of the render area.
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