RxTheme

Manual

Define theme service

import RxTheme

protocol Theme {
    var backgroundColor: UIColor { get }
    var textColor: UIColor { get }
}

struct LightTheme: Theme {
    let backgroundColor = UIColor.white
    let textColor = UIColor.black
}

struct DarkTheme: Theme {
    let backgroundColor = UIColor.black
    let textColor = UIColor.white
}

enum ThemeType: ThemeProvider {
    case light, dark
    var associatedObject: Theme {
        switch self {
        case .light:
            return LightTheme()
        case .dark:
            return DarkTheme()
        }
    }
}

let themeService = ThemeType.service(initial: .light)

Apply theme to UI

themeService.rx
    .bind({ $0.textColor }, to: label.rx.textColor)
    .bind({ $0.backgroundColor }, to: view.rx.backgroundColor)
    .disposed(by: disposeBag)

Switch themes

themeService.set(.dark)

Binder presets

UIView

• backgroundColor
• tintColor

UIButton

• tintColor
• titleColor

UILabel

• font
• textColor
• highlightedTextColor
• shadowColor

UITextField

• font
• keyboardAppearance
• textColor

UIImageView

• image

UIProgressView

• progressTintColor
• trackTintColor

UIPageControl

• pageIndicatorTintColor
• currentPageIndicatorTintColor

UISegmentedControl

• tintColor

UISlider

• thumbTintColor
• minimumTrackTintColor
• maximumTrackTintColor

UIStepper

• tintColor

UIToolbar

• barTintColor

UISwitch

• onTintColor
• thumbTintColor

UITableView

• separatorColor

UINavigationBar

• barStyle
• barTintColor
• titleTextAttributes

UITabBar

• barStyle
• barTintColor

UITextView

• font
• textColor

UIActivityIndicatorView

• activityIndicatorViewStyle

UIBarButtonItem

• tintColor

CALayer

• backgroundColor
• borderWidth
• borderColor
• shadowColor

Extend binders in your codebase

Because RxTheme uses Binder<T> from RxCocoa, any Binder defined in RxCocoa could be used here.

This also makes the lib super easy to extend in your codebase, here is an example

extension Reactive where Base: UIView {
    var borderColor: Binder<UIColor?> {
        return Binder(self.base) { view, color in
            view.layer.borderColor = color?.cgColor
        }
    }
}

Extend binders in the lib

Open codegen/exts.yml, add class, attributes and supported os.

UILabel:
  attrs:
    font: UIFont
    textColor: UIColor?
    highlightedTextColor: UIColor?
    shadowColor: UIColor?
  os: [iOS, tvOS]

then run codegen script

// make sure you have python3 and pipenv installed
$ pipenv install
$ pipenv run python -m codegen

If you think it's commonly used, please send us a PR.

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Installation

Cocoapods

pod 'RxTheme', '~> 2.0'

Carthage

github "RxSwiftCommunity/RxTheme" ~> 2.0.0

Author

duan, wddwyss@gmail.com

License

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