mastodon-ios/Mastodon/Service/ThemeService/ThemeService.swift

72 lines
2.8 KiB
Swift

//
// ThemeService.swift
// Mastodon
//
// Created by MainasuK Cirno on 2021-7-5.
//
import UIKit
import Combine
// ref: https://zamzam.io/protocol-oriented-themes-for-ios-apps/
final class ThemeService {
// MARK: - Singleton
public static let shared = ThemeService()
let currentTheme: CurrentValueSubject<Theme, Never>
private init() {
let theme = ThemeName(rawValue: UserDefaults.shared.currentThemeNameRawValue)?.theme ?? ThemeName.mastodon.theme
currentTheme = CurrentValueSubject(theme)
}
func set(themeName: ThemeName) {
UserDefaults.shared.currentThemeNameRawValue = themeName.rawValue
let theme = themeName.theme
apply(theme: theme)
currentTheme.value = theme
}
func apply(theme: Theme) {
// set navigation bar appearance
let appearance = UINavigationBarAppearance()
appearance.configureWithDefaultBackground()
appearance.backgroundColor = theme.navigationBarBackgroundColor
UINavigationBar.appearance().standardAppearance = appearance
UINavigationBar.appearance().compactAppearance = appearance
UINavigationBar.appearance().scrollEdgeAppearance = appearance
// set tab bar appearance
let tabBarAppearance = UITabBarAppearance()
tabBarAppearance.configureWithDefaultBackground()
let tabBarItemAppearance = UITabBarItemAppearance()
tabBarItemAppearance.selected.iconColor = theme.tabBarItemSelectedIconColor
tabBarItemAppearance.focused.iconColor = theme.tabBarItemFocusedIconColor
tabBarItemAppearance.normal.iconColor = theme.tabBarItemNormalIconColor
tabBarItemAppearance.disabled.iconColor = theme.tabBarItemDisabledIconColor
tabBarAppearance.stackedLayoutAppearance = tabBarItemAppearance
tabBarAppearance.inlineLayoutAppearance = tabBarItemAppearance
tabBarAppearance.compactInlineLayoutAppearance = tabBarItemAppearance
tabBarAppearance.backgroundColor = theme.tabBarBackgroundColor
tabBarAppearance.selectionIndicatorTintColor = Asset.Colors.brandBlue.color
UITabBar.appearance().standardAppearance = tabBarAppearance
UITabBar.appearance().barTintColor = theme.tabBarBackgroundColor
// set table view cell appearance
UITableViewCell.appearance().backgroundColor = theme.tableViewCellBackgroundColor
UITableViewCell.appearance(whenContainedInInstancesOf: [SettingsViewController.self]).backgroundColor = theme.secondarySystemGroupedBackgroundColor
UITableViewCell.appearance().selectionColor = theme.tableViewCellSelectionBackgroundColor
// set search bar appearance
UISearchBar.appearance().barTintColor = theme.navigationBarBackgroundColor
UISearchBar.appearance().tintColor = Asset.Colors.brandBlue.color
}
}