93 lines
3.9 KiB
Swift
93 lines
3.9 KiB
Swift
//
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// ThemeService.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-7-5.
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//
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import UIKit
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import Combine
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import MastodonCommon
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// ref: https://zamzam.io/protocol-oriented-themes-for-ios-apps/
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public final class ThemeService {
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public static let tintColor: UIColor = .label
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// MARK: - Singleton
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public static let shared = ThemeService()
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public let currentTheme: CurrentValueSubject<Theme, Never>
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private init() {
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let theme = ThemeName(rawValue: UserDefaults.shared.currentThemeNameRawValue)?.theme ?? ThemeName.mastodon.theme
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currentTheme = CurrentValueSubject(theme)
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}
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}
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extension ThemeName {
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public var theme: Theme {
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switch self {
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case .system: return SystemTheme()
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case .mastodon: return MastodonTheme()
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}
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}
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}
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extension ThemeService {
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public func set(themeName: ThemeName) {
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UserDefaults.shared.currentThemeNameRawValue = themeName.rawValue
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let theme = themeName.theme
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apply(theme: theme)
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currentTheme.value = theme
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}
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public func apply(theme: Theme) {
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// set navigation bar appearance
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let appearance = UINavigationBarAppearance()
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appearance.configureWithDefaultBackground()
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appearance.backgroundColor = theme.navigationBarBackgroundColor
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UINavigationBar.appearance().standardAppearance = appearance
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UINavigationBar.appearance().compactAppearance = appearance
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UINavigationBar.appearance().scrollEdgeAppearance = appearance
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UINavigationBar.appearance().compactScrollEdgeAppearance = appearance
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// set tab bar appearance
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let tabBarAppearance = UITabBarAppearance()
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tabBarAppearance.configureWithDefaultBackground()
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let tabBarItemAppearance = UITabBarItemAppearance()
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tabBarItemAppearance.selected.titleTextAttributes = [.foregroundColor: UIColor.clear]
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tabBarItemAppearance.focused.titleTextAttributes = [.foregroundColor: UIColor.clear]
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tabBarItemAppearance.normal.titleTextAttributes = [.foregroundColor: UIColor.clear]
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tabBarItemAppearance.disabled.titleTextAttributes = [.foregroundColor: UIColor.clear]
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tabBarItemAppearance.selected.iconColor = theme.tabBarItemSelectedIconColor
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tabBarItemAppearance.focused.iconColor = theme.tabBarItemFocusedIconColor
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tabBarItemAppearance.normal.iconColor = theme.tabBarItemNormalIconColor
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tabBarItemAppearance.disabled.iconColor = theme.tabBarItemDisabledIconColor
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tabBarAppearance.stackedLayoutAppearance = tabBarItemAppearance
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tabBarAppearance.inlineLayoutAppearance = tabBarItemAppearance
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tabBarAppearance.compactInlineLayoutAppearance = tabBarItemAppearance
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tabBarAppearance.backgroundColor = theme.tabBarBackgroundColor
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tabBarAppearance.selectionIndicatorTintColor = ThemeService.tintColor
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UITabBar.appearance().standardAppearance = tabBarAppearance
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UITabBar.appearance().scrollEdgeAppearance = tabBarAppearance
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UITabBar.appearance().barTintColor = theme.tabBarBackgroundColor
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// set table view cell appearance
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UITableViewCell.appearance().backgroundColor = theme.tableViewCellBackgroundColor
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// FIXME: refactor
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// UITableViewCell.appearance(whenContainedInInstancesOf: [SettingsViewController.self]).backgroundColor = theme.secondarySystemGroupedBackgroundColor
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// UITableViewCell.appearance().selectionColor = theme.tableViewCellSelectionBackgroundColor
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// set search bar appearance
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UISearchBar.appearance().tintColor = ThemeService.tintColor
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UISearchBar.appearance().barTintColor = theme.navigationBarBackgroundColor
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let cancelButtonAttributes: [NSAttributedString.Key : Any] = [NSAttributedString.Key.foregroundColor: ThemeService.tintColor]
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UIBarButtonItem.appearance(whenContainedInInstancesOf: [UISearchBar.self]).setTitleTextAttributes(cancelButtonAttributes, for: .normal)
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}
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}
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