An intuitive HSB color picker built in Swift. Supports multiple selection handles and is customizable to your needs.

Looking for version 1.x?

Version 1.x.x can be found on the legacy branch. While the pod is still available, it is deprecated and projects should migrate to 2.0.

Examples

let colorPicker = ChromaColorPicker(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
addSubview(colorPicker)

// Optional: Attach a ChromaBrightnessSlider to a ChromaColorPicker
let brightnessSlider = ChromaBrightnessSlider(frame: CGRect(x: 0, y: 0, width: 280, height: 32))
addSubview(brightnessSlider)

colorPicker.connect(brightnessSlider) // or `brightnessSlider.connect(to: colorPicker)`

• View the Example app for more.

Usage

Multiple Handles

// Add handle at color
let peachColor = UIColor(red: 1, green: 203 / 255, blue: 164 / 255, alpha: 1)
colorPicker.addHandle(at: peachColor)

// Add handle with reference
let customHandle = ChromaColorHandle()
customHandle.color = UIColor.purple
colorPicker.addHandle(customHandle)

// Add handle and keep reference
let handle = colorPicker.addHandle(at: .blue)

Custom Handle Icon

let homeHandle = ChomaColorHandle(color: .blue)
let imageView = UIImageView(image: #imageLiteral(resourceName: "home-icon").withRenderingMode(.alwaysTemplate))
imageView.contentMode = .scaleAspectFit
imageView.tintColor = .white
homeHandle.accessoryView = imageView
homeHandle.accessoryViewEdgeInsets = UIEdgeInsets(top: 2, left: 4, bottom: 4, right: 4)

colorPicker.addHandle(homeHandle)

Installation

Carthage

github "joncardasis/ChromaColorPicker"

Cocoapods

pod 'ChromaColorPicker'

Manually

Add all files from the Source folder to your project.

Components

Component	Description
ChromaColorPicker	An HSB color picker with support for adding multiple color selection handles.
ChromaBrightnessSlider	A slider UIControl which can be attached to any ChromaColorPicker via the connect(to:) method. ChromaBrightnessSlider can also function as a stand-alone UIControl.

Supported UIControlEvents

Both ChromaBrightnessSlider and ChromaColorPicker conform to UIControl. Each send UIControlEvents which can be observed via via UIControl's addTarget method.

ChromaColorPicker

Event	Description
.valueChanged	Called whenever the color has changed.
.touchUpInside	Called when a handle is released.

ChromaBrightnessSlider

Event	Description
.touchDown	Called when a the slider is grabbed.
.valueChanged	Called whenever the slider is moved and the value has changed.
.touchUpInside	Called when the slider handle is released.

// Example
brightnessSlider.addTarget(self, action: #selector(sliderDidValueChange(_:)), for: .valueChanged)

@objc func sliderDidValueChange(_ slider: ChromaBrightnessSlider) {
  print("new color: \(slider.currentColor)")
}

License

ChromaColorPicker is available under the MIT license. See the LICENSE file for more info.