Hue - SwiftGit

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Hue

March 11, 2024

Hue is the all-in-one coloring utility that you’ll ever need.

Usage

Hex

You can easily use hex colors with the init(hex:) convenience initializer on UIColor. It supports the following hex formats #ffffff, ffffff, #fff, fff


                                              
                                                let white = UIColor(hex: “#ffffff”)

let black = UIColor(hex: “#000000”)

let red = UIColor(hex: “#ff0000”)

let blue = UIColor(hex: “#0000ff”)

let green = UIColor(hex: “#00ff00”)

let yellow = UIColor(hex: “#ffff00”)

Computed color properties


                                              
                                                let white = UIColor(hex: “#ffffff”)

let black = UIColor(hex: “#000000”)
if white.isDarkColor {} // return false

if white.isBlackOrWhite {} // return true

Alpha

.alpha is a sugar for colorWithAlphaComponent, internally it does the exact same thing, think of it as a lipstick for your implementation.


                                              
                                                let colorWithAlpha = myColor.alpha(0.75)

Gradients

You can easily create gradient layers using the gradient() method on arrays with UIColor. As an extra bonus, you can also add a transform closure if you want to modify the CAGradientLayer.


                                              
                                                let gradient = [UIColor.blackColor(), UIColor.orangeColor()].gradient()
let secondGradient = [UIColor.blackColor(), UIColor.orangeColor()].gradient { gradient in

gradient.locations = [0.25, 1.0]

return gradient

}

Image colors


                                              
                                                let image = UIImage(named: “My Image”)

let (background, primary, secondary, detail) = image.colors()

Components

You can get red, green, blue, and alpha components from any UIColor by using the (red|green|blue|alpha)Component property.


                                              
                                                let myColor = UIColor(hex: “#ffafc2”)

let myColorBlueComponent = myColor.blueComponent

let myColorGreenComponent = myColor.greenComponent

let myColorRedComponent = myColor.redComponent

let myColorAlphaComponent = myColor.alphaComponent

Blending


                                              
                                                let red = UIColor.redColor()

let green = UIColor.greenColor()

let yellow = red.addRGB(green)
let desaturatedBlue = UIColor(hex: “#aaaacc”)

let saturatedBlue = desaturatedBlue.addHue(0.0, saturation: 1.0, brightness: 0.0, alpha: 0.0)

Supporting the project

If you want to support the development of this framework, you can do so by becoming a sponsor. ❤️

Examples

Hex

This super simple example that displays a bunch of color schemes in a Carousel view.

It uses hex to set the color for the schemes. It leverages from .isDarkColor to make the text color readable in all scenarios.

The demo also features Spots for rendering the Carousel view.

Example code:


                                              
                                                let color = UIColor(hex: “#3b5998”)

backgroundColor = color

label.textColor = color.isDark

? UIColor.whiteColor()

: UIColor.darkGrayColor()

Gradients

This examples shows how much fun you can have with combining CAGradientLayer with CABasicAnimation.

It uses .hex for getting the colors and .gradient() for transforming a collection of UIColor‘s into a CAGradientLayer.

The demo features Spots for rendering the list view and Fakery for generating random content strings.

Extract from the demo:


                                              
                                                lazy var gradient: CAGradientLayer = [

UIColor(hex: “#FD4340”),

UIColor(hex: “#CE2BAE”)

].gradient { gradient in

gradient.speed = 0

gradient.timeOffset = 0
return gradient

}

Installation

Hue is available through CocoaPods. To install it, simply add the following line to your Podfile:


                                              
                                                pod ‘Hue’

Hue is also available through Carthage. To install just write into your Cartfile:


                                              
                                                github “hyperoslo/Hue”

To install Hue using Swift Package Manager with Xcode 11, just follow the instructions at https://developer.apple.com/documentation/swift_packages and import the platform specific library to the project:


                                              
                                                import Hue

GitHub

View Github

#color #colorpicker #colorpickerview #colors #material-colors