ColorDerivative class abstract base

An abstract base class representing a color that can be transformed between different color spaces.

ColorDerivative provides a unified interface for working with colors in various color spaces (HSV, HSL, RGB) while maintaining transformation capabilities. This is particularly useful in color picker implementations where users may want to work with different color models.

The class supports:

• Conversion between HSV, HSL, and RGB color spaces
• Individual channel manipulation (hue, saturation, value/lightness, red, green, blue, opacity)
• Preserving the internal color representation when transforming

Example:

// Create from a Flutter Color
final derivative = ColorDerivative.fromColor(Colors.blue);

// Modify saturation
final desaturated = derivative.changeToHSVSaturation(0.5);

// Convert back to Color
final newColor = desaturated.toColor();

Constructors

ColorDerivative()

Creates a const ColorDerivative.

const

ColorDerivative.fromHSL(HSLColor color)

Creates a ColorDerivative from an HSLColor.

const

factory

ColorDerivative.fromHSV(HSVColor color)

Creates a ColorDerivative from an HSVColor.

const

factory

Properties

blue → int

Gets the blue component in RGB color space, ranging from 0 to 255.

no setter

green → int

Gets the green component in RGB color space, ranging from 0 to 255.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

hslHue → double

Gets the hue component in HSL color space, ranging from 0.0 to 360.0.

no setter

hslSat → double

Gets the saturation component in HSL color space, ranging from 0.0 to 1.0.

no setter

hslVal → double

Gets the lightness component in HSL color space, ranging from 0.0 to 1.0.

no setter

hsvHue → double

Gets the hue component in HSV color space, ranging from 0.0 to 360.0.

no setter

hsvSat → double

Gets the saturation component in HSV color space, ranging from 0.0 to 1.0.

no setter

hsvVal → double

Gets the value (brightness) component in HSV color space, ranging from 0.0 to 1.0.

no setter

opacity → double

Gets the opacity (alpha) value of this color, ranging from 0.0 to 1.0.

no setter

red → int

Gets the red component in RGB color space, ranging from 0 to 255.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

changeToColor(Color color) → ColorDerivative

Changes this color to the specified color while preserving the internal color space representation.

changeToColorBlue(double blue) → ColorDerivative

Changes the blue component of this color in RGB color space.

changeToColorGreen(double green) → ColorDerivative

Changes the green component of this color in RGB color space.

changeToColorRed(double red) → ColorDerivative

Changes the red component of this color in RGB color space.

changeToHSL(HSLColor color) → ColorDerivative

Changes this color to the specified color in HSL color space.

changeToHSLHue(double hue) → ColorDerivative

Changes the hue component of this color in HSL color space.

changeToHSLLightness(double lightness) → ColorDerivative

Changes the lightness component of this color in HSL color space.

changeToHSLSaturation(double saturation) → ColorDerivative

Changes the saturation component of this color in HSL color space.

changeToHSV(HSVColor color) → ColorDerivative

Changes this color to the specified color in HSV color space.

changeToHSVAlpha(double alpha) → ColorDerivative

Changes the alpha (opacity) component of this color in HSV color space.

changeToHSVHue(double hue) → ColorDerivative

Changes the hue component of this color in HSV color space.

changeToHSVSaturation(double saturation) → ColorDerivative

Changes the saturation component of this color in HSV color space.

changeToHSVValue(double value) → ColorDerivative

Changes the value (brightness) component of this color in HSV color space.

changeToOpacity(double alpha) → ColorDerivative

Changes the opacity (alpha) value of this color.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toColor() → Color

Converts this color derivative to a Flutter Color.

toHSLColor() → HSLColor

Converts this color derivative to an HSLColor.

toHSVColor() → HSVColor

Converts this color derivative to an HSVColor.

toString() → String

A string representation of this object.

inherited

transform(ColorDerivative old) → ColorDerivative

Transforms this color derivative to match the internal representation of old.

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

fromColor(Color color) → ColorDerivative

Creates a ColorDerivative from a Flutter Color using HSV color space internally.