Lightweight HSB color picker view in Swift.
Install
Carthage
Add the following to your Cartfile:
github "naturaln0va/RAScrollablePickerView"
The build the Cartfile:
carthage update --platform iOS
Then drag Carthage/Build/iOS/RAScrollablePickerView.framework into your Xcode project.
Finally add the import:
import RAScrollablePickerView
Manual
Just drop Framework/RAScrollablePickerView/RAScrollablePickerView/RAScrollablePickerView.swift in your project.
Usage
Then create 3 instances of the scrollable picker view and assign each a different type.
huePicker.delegate = self
saturationPicker.delegate = self
saturationPicker.type = .saturation
saturationPicker.hueValueForPreview = huePicker.value
brightnessPicker.delegate = self
brightnessPicker.type = .brightness
brightnessPicker.hueValueForPreview = huePicker.valueFinally make sure the parent view/viewcontroller conforms to RAScrollablePickerViewDelegate and add the required valueChanged method.
func valueChanged(_ value: CGFloat, type: PickerType) {
switch type {
case .hue:
colorPreView.backgroundColor = UIColor(hue: value, saturation: saturationPicker.value, brightness: brightnessPicker.value, alpha: 1)
saturationPicker.hueValueForPreview = value
brightnessPicker.hueValueForPreview = value
case .saturation:
colorPreView.backgroundColor = UIColor(hue: huePicker.value, saturation: value, brightness: brightnessPicker.value, alpha: 1)
case .brightness:
colorPreView.backgroundColor = UIColor(hue: huePicker.value, saturation: saturationPicker.value, brightness: value, alpha: 1)
}
}Update a picker with a color
let colors: [UIColor] = [.systemBlue, .systemOrange, .systemYellow]
let startColor = colors.randomElement() ?? .systemPink
picker.set(color: startColor)Contact
Feel free the reach out to me if you have an questions.