SweepGradientPainter class

A 2D sweep gradient.

LinearGradientPainter, RadialGradientPainter, and SweepGradientPainter can be used interchangeably in BoxDecorations, or can be used to build a Shader to paint directly onto a Canvas. See: createShader.

Inheritance
Implemented types

Constructors

SweepGradientPainter({AlignmentGeometry center = Alignment.center, double startAngle = 0.0, double endAngle = math.pi * 2, required List<Color> colors, List<double>? stops, TileMode tileMode = TileMode.clamp, GradientTransform? transform, ColorSpace? colorSpace, bool invert = false, double density = 0.075})
A 2D sweep gradient.
const

Properties

center → AlignmentGeometry
The center of the gradient, as an offset into the (-1.0, -1.0) x (1.0, 1.0) square describing the gradient which will be mapped onto the paint box.
finalinherited
colors → List<Color>
The colors the gradient should obtain at each of the stops.
finalinherited
colorSpace → ColorSpace?
The color space the colors of the gradient will be interpolated in.
final
density → double
Defines the number of steps to generate in relation to the number of device pixels the gradient spans.
final
endAngle → double
The angle in radians at which stop 1.0 of the gradient is placed.
finalinherited
hashCode → int
The hash code for this object.
no setteroverride
invert → bool
If false, the colors will be interpolated in the color space defined by the starting color within any pairing, however if true, the colors will be interpolated in the space defined by the ending color.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
startAngle → double
The angle in radians at which stop 0.0 of the gradient is placed.
finalinherited
stops → List<double>?
A list of values from 0.0 to 1.0 that denote fractions along the gradient.
finalinherited
tileMode → TileMode
How this gradient should tile the plane beyond in the region before startAngle and after endAngle.
finalinherited
transform → GradientTransform?
The transform, if any, to apply to the gradient.
finalinherited

Methods

createShader(Rect rect, {TextDirection? textDirection}) → Shader
Creates a Shader for this gradient to fill the given rect.
override
lerpFrom(Gradient? a, double t) → Gradient?
Linearly interpolates from another Gradient to this.
inherited
lerpTo(Gradient? b, double t) → Gradient?
Linearly interpolates from this to another Gradient.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
scale(double factor) → SweepGradientPainter
Returns a new SweepGradient with its colors scaled by the given factor.
override
toString() → String
A string representation of this object.
inherited
withOpacity(double opacity) → SweepGradient
Returns a new Gradient with each color set to the given opacity.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
override