flutter_color_models

A wrapper for the color_models plugin with added support for Flutter's Color class.

See: http://github.com/james-alex/color_models

Usage

import 'package:flutter_color_models/flutter_color_models.dart';

Color Spaces

color_models exposes models for the CMYK, HSI, HSL, HSP, HSV, LAB, RGB, and XYZ color spaces; represented as CmykColor, HsiColor, HslColor, HspColor, HsvColor, LabColor, RgbColor, and XyzColor respectively.

Each model is constant and extends ColorModel.

Casting Color to and from the ColorModels

Each color model has method toColor() a static method fromColor() that will recast a Color to a ColorModel and vice versa, converting the color to desired color space if not called on RgbColor.

Color color = Color(0xFFFFFF00); // yellow

CmykColor cmykColor = CmykColor.fromColor(color);
color = cmykColor.toColor();

HsiColor hsiColor = HsiColor.fromColor(color);
color = hsiColor.toColor();

HslColor hslColor = HslColor.fromColor(color);
color = hslColor.toColor();

HspColor hspColor = HspColor.fromColor(color);
color = hspColor.toColor();

HsvColor hsvColor = HsvColor.fromColor(color);
color = hsvColor.toColor();

LabColor labColor = LabColor.fromColor(color);
color = labColor.toColor();

RgbColor rgbColor = RgbColor.fromColor(color);
color = rgbColor.toColor();

XyzColor xyzColor = XyzColor.fromColor(color);
color = xyzColor.toColor();

Converting Colors Between Spaces

Each color model has methods to convert itself to each of the other color models.

CmykColor toCmykColor();

HsiColor toHsiColor();

HslColor toHslColor();

HspColor toHspColor();

HsvColor toHsvColor();

LabColor toLabColor();

RgbColor toRgbColor();

XyzColor toXyzColor();

Altenatively, each color model has a static method from that can accept a color from any color space and returns its own type (T).

static T from(ColorModel color);

// Create a HSV color
HsvColor originalColor = HsvColor(0.3, 0.8, 0.7);

// Convert it to RGB => RgbColor(64, 179, 36)
RgbColor rgbColor = RgbColor.from(originalColor);

// Then to CMYK => CmykColor(64.25, 0, 79.89, 29.8)
CmykColor cmykColor = CmykColor.from(rgbColor);

// Back to HSV => HsvColor(0.3, 0.8, 0.7)
HsvColor hsvColor = HsvColor.from(cmykColor);

Note: All color conversions use the RGB color space as an intermediary. To minimize the loss of precision when converting between other color spaces, RgbColor privately stores the RGB values as nums rather than ints. The num values can be returned as a list with RgbColor's toPreciseList() method.

Libraries

flutter_color_models