CGColorTraitChange is a project aimed at simplifying the handling of CGColor during trait changes in iOS applications. Additionally, it includes a theme manager designed to seamlessly manage system, dark, and light modes.
- CGColorTraitChange: Facilitates easy handling of
CGColorduring trait changes, ensuring consistent color rendering across various interface styles. - Theme Manager: Provides a robust solution for managing themes in iOS applications, including support for system, dark, and light modes.
- Customization: Allows for easy customization of colors based on different interface styles without cluttering your codebase.
- Clone or download the project from GitHub.
class ViewController: BaseViewController {
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .systemBackground
layoutView()
// Do any additional setup after loading the view.
}
private lazy var segmentedController: UISegmentedControl = {
let segmentedController = UISegmentedControl(items: ["Default", "Light", "Dark"])
segmentedController.translatesAutoresizingMaskIntoConstraints = false
segmentedController.selectedSegmentIndex = ThemeStore.theme.rawValue
segmentedController.addTarget(self, action: #selector(segmentedControlValueChanged(_:)), for: .valueChanged)
return segmentedController
}()
private lazy var mainView: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.backgroundColor = .lightGray
view.clipsToBounds = true
view.layer.cornerRadius = 8
view.layer.borderColor = Colors.Border.resolvedColor(with: .current).cgColor
view.layer.borderWidth = 5
return view
}()
}
extension ViewController {
private func layoutView() {
view.addSubview(segmentedController)
view.addSubview(mainView)
segmentedController.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
segmentedController.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 16).isActive = true
mainView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
mainView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
mainView.widthAnchor.constraint(equalTo: view.widthAnchor, multiplier: 0.9).isActive = true
mainView.heightAnchor.constraint(equalTo: mainView.widthAnchor).isActive = true
}
@objc private func segmentedControlValueChanged(_ sender: UISegmentedControl) {
switch sender.selectedSegmentIndex {
case 0:
ThemeStore.theme = .device
case 1:
ThemeStore.theme = .light
default:
ThemeStore.theme = .dark
}
overrideUserInterfaceStyle = ThemeStore.theme.getUserInterfaceStyle()
}
}
extension BaseViewController {
//MARK: - Handle border color during trait change
override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
if traitCollection.hasDifferentColorAppearance(comparedTo: previousTraitCollection) {
applicationDataContainer.currentTrait = .current
applicationDataContainer.currentTheme = applicationDataContainer.currentTrait.userInterfaceStyle
view.allSubviews().forEach { [weak self] in
guard let _ = self else {
return
}
if $0.layer.borderColor != nil, $0.layer.borderColor != UIColor.clear.cgColor {
let border = UIColor(cgColor: $0.layer.borderColor ?? UIColor.clear.cgColor)
let color = Colors.convertHexToColor(hex: border.hexString())
$0.layer.borderColor = color.resolvedColor(with: .current).cgColor
}
}
}
}
}