Files
simplex-chat/apps/ios/Shared/Theme/ThemeManager.swift
2026-02-19 10:58:16 +00:00

317 lines
16 KiB
Swift

//
// ThemeManager.swift
// SimpleX (iOS)
//
// Created by Avently on 03.06.2024.
// Copyright © 2024 SimpleX Chat. All rights reserved.
//
// Spec: spec/services/theme.md
import Foundation
import SwiftUI
import SimpleXChat
// Spec: spec/services/theme.md#ThemeManager
class ThemeManager {
// Spec: spec/services/theme.md#ActiveTheme
struct ActiveTheme: Equatable {
let name: String
let base: DefaultTheme
let colors: Colors
let appColors: AppColors
var wallpaper: AppWallpaper = AppWallpaper(background: nil, tint: nil, type: .empty)
func toAppTheme() -> AppTheme {
AppTheme(name: name, base: base, colors: colors, appColors: appColors, wallpaper: wallpaper)
}
}
private static func systemDarkThemeColors() -> (Colors, DefaultTheme) {
switch systemDarkThemeDefault.get() {
case DefaultTheme.DARK.themeName: (DarkColorPalette, DefaultTheme.DARK)
case DefaultTheme.SIMPLEX.themeName: (SimplexColorPalette, DefaultTheme.SIMPLEX)
case DefaultTheme.BLACK.themeName: (BlackColorPalette, DefaultTheme.BLACK)
default: (SimplexColorPalette, DefaultTheme.SIMPLEX)
}
}
private static func nonSystemThemeName() -> String {
let themeName = currentThemeDefault.get()
return if themeName != DefaultTheme.SYSTEM_THEME_NAME {
themeName
} else {
systemInDarkThemeCurrently ? systemDarkThemeDefault.get() : DefaultTheme.LIGHT.themeName
}
}
// Spec: spec/services/theme.md#defaultActiveTheme
static func defaultActiveTheme(_ appSettingsTheme: [ThemeOverrides]) -> ThemeOverrides? {
let nonSystemThemeName = nonSystemThemeName()
let defaultThemeId = currentThemeIdsDefault.get()[nonSystemThemeName]
return appSettingsTheme.getTheme(defaultThemeId)
}
static func defaultActiveTheme(_ perUserTheme: ThemeModeOverrides?, _ appSettingsTheme: [ThemeOverrides]) -> ThemeModeOverride {
let perUserTheme = !CurrentColors.colors.isLight ? perUserTheme?.dark : perUserTheme?.light
if let perUserTheme {
return perUserTheme
}
let defaultTheme = defaultActiveTheme(appSettingsTheme)
return ThemeModeOverride(mode: CurrentColors.base.mode, colors: defaultTheme?.colors ?? ThemeColors(), wallpaper: defaultTheme?.wallpaper ?? ThemeWallpaper.from(PresetWallpaper.school.toType(CurrentColors.base), nil, nil))
}
// Spec: spec/services/theme.md#currentColors
static func currentColors(_ themeOverridesForType: WallpaperType?, _ perChatTheme: ThemeModeOverride?, _ perUserTheme: ThemeModeOverrides?, _ appSettingsTheme: [ThemeOverrides]) -> ActiveTheme {
let themeName = currentThemeDefault.get()
let nonSystemThemeName = nonSystemThemeName()
let defaultTheme = defaultActiveTheme(appSettingsTheme)
let baseTheme = switch nonSystemThemeName {
case DefaultTheme.LIGHT.themeName: ActiveTheme(name: DefaultTheme.LIGHT.themeName, base: DefaultTheme.LIGHT, colors: LightColorPalette.clone(), appColors: LightColorPaletteApp.clone(), wallpaper: AppWallpaper(background: nil, tint: nil, type: PresetWallpaper.school.toType(DefaultTheme.LIGHT)))
case DefaultTheme.DARK.themeName: ActiveTheme(name: DefaultTheme.DARK.themeName, base: DefaultTheme.DARK, colors: DarkColorPalette.clone(), appColors: DarkColorPaletteApp.clone(), wallpaper: AppWallpaper(background: nil, tint: nil, type: PresetWallpaper.school.toType(DefaultTheme.DARK)))
case DefaultTheme.SIMPLEX.themeName: ActiveTheme(name: DefaultTheme.SIMPLEX.themeName, base: DefaultTheme.SIMPLEX, colors: SimplexColorPalette.clone(), appColors: SimplexColorPaletteApp.clone(), wallpaper: AppWallpaper(background: nil, tint: nil, type: PresetWallpaper.school.toType(DefaultTheme.SIMPLEX)))
case DefaultTheme.BLACK.themeName: ActiveTheme(name: DefaultTheme.BLACK.themeName, base: DefaultTheme.BLACK, colors: BlackColorPalette.clone(), appColors: BlackColorPaletteApp.clone(), wallpaper: AppWallpaper(background: nil, tint: nil, type: PresetWallpaper.school.toType(DefaultTheme.BLACK)))
default: ActiveTheme(name: DefaultTheme.LIGHT.themeName, base: DefaultTheme.LIGHT, colors: LightColorPalette.clone(), appColors: LightColorPaletteApp.clone(), wallpaper: AppWallpaper(background: nil, tint: nil, type: PresetWallpaper.school.toType(DefaultTheme.LIGHT)))
}
let perUserTheme = baseTheme.colors.isLight ? perUserTheme?.light : perUserTheme?.dark
let theme = appSettingsTheme.sameTheme(themeOverridesForType ?? perChatTheme?.type ?? perUserTheme?.type ?? defaultTheme?.wallpaper?.toAppWallpaper().type, nonSystemThemeName) ?? defaultTheme
if theme == nil && perUserTheme == nil && perChatTheme == nil && themeOverridesForType == nil {
return ActiveTheme(name: themeName, base: baseTheme.base, colors: baseTheme.colors, appColors: baseTheme.appColors, wallpaper: baseTheme.wallpaper)
}
let presetWallpaperTheme: ThemeColors? = if let themeOverridesForType, case let WallpaperType.preset(filename, _) = themeOverridesForType {
PresetWallpaper.from(filename)?.colors[baseTheme.base]
} else if let wallpaper = perChatTheme?.wallpaper {
if let preset = wallpaper.preset { PresetWallpaper.from(preset)?.colors[baseTheme.base] } else { nil }
} else if let wallpaper = perUserTheme?.wallpaper {
if let preset = wallpaper.preset { PresetWallpaper.from(preset)?.colors[baseTheme.base] } else { nil }
} else {
if let preset = theme?.wallpaper?.preset { PresetWallpaper.from(preset)?.colors[baseTheme.base] } else { nil }
}
let themeOrEmpty = theme ?? ThemeOverrides(base: baseTheme.base)
let colors = themeOrEmpty.toColors(themeOrEmpty.base, perChatTheme?.colors, perUserTheme?.colors, presetWallpaperTheme)
return ActiveTheme(
name: themeName,
base: baseTheme.base,
colors: colors,
appColors: themeOrEmpty.toAppColors(themeOrEmpty.base, perChatTheme?.colors, perChatTheme?.type, perUserTheme?.colors, perUserTheme?.type, presetWallpaperTheme),
wallpaper: themeOrEmpty.toAppWallpaper(themeOverridesForType, perChatTheme, perUserTheme, colors.background)
)
}
// Spec: spec/services/theme.md#currentThemeOverridesForExport
static func currentThemeOverridesForExport(_ themeOverridesForType: WallpaperType?, _ perChatTheme: ThemeModeOverride?, _ perUserTheme: ThemeModeOverrides?) -> ThemeOverrides {
let current = currentColors(themeOverridesForType, perChatTheme, perUserTheme, themeOverridesDefault.get())
let wType = current.wallpaper.type
let wBackground = current.wallpaper.background
let wTint = current.wallpaper.tint
let w: ThemeWallpaper? = if case WallpaperType.empty = wType {
nil
} else {
ThemeWallpaper.from(wType, wBackground?.toReadableHex(), wTint?.toReadableHex()).withFilledWallpaperBase64()
}
return ThemeOverrides(
themeId: "",
base: current.base,
colors: ThemeColors.from(current.colors, current.appColors),
wallpaper: w
)
}
// Spec: spec/services/theme.md#applyTheme
static func applyTheme(_ theme: String) {
currentThemeDefault.set(theme)
CurrentColors = currentColors(nil, nil, ChatModel.shared.currentUser?.uiThemes, themeOverridesDefault.get())
AppTheme.shared.updateFromCurrentColors()
let tint = UIColor(CurrentColors.colors.primary)
if SceneDelegate.windowStatic?.tintColor != tint {
SceneDelegate.windowStatic?.tintColor = tint
}
// applyNavigationBarColors(CurrentColors.toAppTheme())
}
// Spec: spec/services/theme.md#adjustWindowStyle
static func adjustWindowStyle() {
let style = switch currentThemeDefault.get() {
case DefaultTheme.LIGHT.themeName: UIUserInterfaceStyle.light
case DefaultTheme.SYSTEM_THEME_NAME: UIUserInterfaceStyle.unspecified
default: UIUserInterfaceStyle.dark
}
if SceneDelegate.windowStatic?.overrideUserInterfaceStyle != style {
SceneDelegate.windowStatic?.overrideUserInterfaceStyle = style
}
}
// static func applyNavigationBarColors(_ theme: AppTheme) {
// let baseColors = switch theme.base {
// case DefaultTheme.LIGHT: LightColorPaletteApp
// case DefaultTheme.DARK: DarkColorPaletteApp
// case DefaultTheme.SIMPLEX: SimplexColorPaletteApp
// case DefaultTheme.BLACK: BlackColorPaletteApp
// }
// let isDefaultColor = baseColors.title == theme.appColors.title
//
// let title = UIColor(theme.appColors.title)
// if !isDefaultColor && UINavigationBar.appearance().titleTextAttributes?.first as? UIColor != title {
// UINavigationBar.appearance().titleTextAttributes = [.foregroundColor: title]
// UINavigationBar.appearance().largeTitleTextAttributes = [.foregroundColor: title]
// } else {
// UINavigationBar.appearance().titleTextAttributes = nil
// UINavigationBar.appearance().largeTitleTextAttributes = nil
// }
// }
static func changeDarkTheme(_ theme: String) {
systemDarkThemeDefault.set(theme)
CurrentColors = currentColors(nil, nil, ChatModel.shared.currentUser?.uiThemes, themeOverridesDefault.get())
AppTheme.shared.updateFromCurrentColors()
}
// Spec: spec/services/theme.md#saveAndApplyThemeColor
static func saveAndApplyThemeColor(_ baseTheme: DefaultTheme, _ name: ThemeColor, _ color: Color? = nil, _ pref: CodableDefault<[ThemeOverrides]>? = nil) {
let nonSystemThemeName = baseTheme.themeName
let pref = pref ?? themeOverridesDefault
let overrides = pref.get()
let themeId = currentThemeIdsDefault.get()[nonSystemThemeName]
let prevValue = overrides.getTheme(themeId) ?? ThemeOverrides(base: baseTheme)
pref.set(overrides.replace(prevValue.withUpdatedColor(name, color?.toReadableHex())))
var themeIds = currentThemeIdsDefault.get()
themeIds[nonSystemThemeName] = prevValue.themeId
currentThemeIdsDefault.set(themeIds)
applyTheme(currentThemeDefault.get())
}
static func applyThemeColor(name: ThemeColor, color: Color? = nil, pref: Binding<ThemeModeOverride>) {
pref.wrappedValue = pref.wrappedValue.withUpdatedColor(name, color?.toReadableHex())
}
// Spec: spec/services/theme.md#saveAndApplyWallpaper
static func saveAndApplyWallpaper(_ baseTheme: DefaultTheme, _ type: WallpaperType?, _ pref: CodableDefault<[ThemeOverrides]>?) {
let nonSystemThemeName = baseTheme.themeName
let pref = pref ?? themeOverridesDefault
let overrides = pref.get()
let theme = overrides.sameTheme(type, baseTheme.themeName)
var prevValue = theme ?? ThemeOverrides(base: baseTheme)
prevValue.wallpaper = if let type {
if case WallpaperType.empty = type {
nil as ThemeWallpaper?
} else {
ThemeWallpaper.from(type, prevValue.wallpaper?.background, prevValue.wallpaper?.tint)
}
} else {
nil
}
pref.set(overrides.replace(prevValue))
var themeIds = currentThemeIdsDefault.get()
themeIds[nonSystemThemeName] = prevValue.themeId
currentThemeIdsDefault.set(themeIds)
applyTheme(currentThemeDefault.get())
}
static func copyFromSameThemeOverrides(_ type: WallpaperType?, _ lowerLevelOverride: ThemeModeOverride?, _ pref: Binding<ThemeModeOverride>) -> Bool {
let overrides = themeOverridesDefault.get()
let sameWallpaper: ThemeWallpaper? = if let wallpaper = lowerLevelOverride?.wallpaper, lowerLevelOverride?.type?.sameType(type) == true {
wallpaper
} else {
overrides.sameTheme(type, CurrentColors.base.themeName)?.wallpaper
}
guard let sameWallpaper else {
if let type {
var w: ThemeWallpaper = ThemeWallpaper.from(type, nil, nil)
w.scale = nil
w.scaleType = nil
w.background = nil
w.tint = nil
pref.wrappedValue = ThemeModeOverride(mode: CurrentColors.base.mode, wallpaper: w)
} else {
// Make an empty wallpaper to override any top level ones
pref.wrappedValue = ThemeModeOverride(mode: CurrentColors.base.mode, wallpaper: ThemeWallpaper())
}
return true
}
var type = sameWallpaper.toAppWallpaper().type
if case let WallpaperType.image(filename, scale, scaleType) = type, sameWallpaper.imageFile == filename {
// same image file. Needs to be copied first in order to be able to remove the file once it's not needed anymore without affecting main theme override
if let filename = saveWallpaperFile(url: getWallpaperFilePath(filename)) {
type = WallpaperType.image(filename, scale, scaleType)
} else {
logger.error("Error while copying wallpaper from global overrides to chat overrides")
return false
}
}
var prevValue = pref.wrappedValue
var w = ThemeWallpaper.from(type, nil, nil)
w.scale = nil
w.scaleType = nil
w.background = nil
w.tint = nil
prevValue.colors = ThemeColors()
prevValue.wallpaper = w
pref.wrappedValue = prevValue
return true
}
static func applyWallpaper(_ type: WallpaperType?, _ pref: Binding<ThemeModeOverride>) {
var prevValue = pref.wrappedValue
prevValue.wallpaper = if let type {
ThemeWallpaper.from(type, prevValue.wallpaper?.background, prevValue.wallpaper?.tint)
} else {
nil
}
pref.wrappedValue = prevValue
}
// Spec: spec/services/theme.md#saveAndApplyThemeOverrides
static func saveAndApplyThemeOverrides(_ theme: ThemeOverrides, _ pref: CodableDefault<[ThemeOverrides]>? = nil) {
let wallpaper = theme.wallpaper?.importFromString()
let nonSystemThemeName = theme.base.themeName
let pref: CodableDefault<[ThemeOverrides]> = pref ?? themeOverridesDefault
let overrides = pref.get()
var prevValue = overrides.getTheme(nil, wallpaper?.toAppWallpaper().type, theme.base) ?? ThemeOverrides(base: theme.base)
if let imageFile = prevValue.wallpaper?.imageFile {
try? FileManager.default.removeItem(at: getWallpaperFilePath(imageFile))
}
prevValue.base = theme.base
prevValue.colors = theme.colors
prevValue.wallpaper = wallpaper
pref.set(overrides.replace(prevValue))
currentThemeDefault.set(nonSystemThemeName)
var currentThemeIds = currentThemeIdsDefault.get()
currentThemeIds[nonSystemThemeName] = prevValue.themeId
currentThemeIdsDefault.set(currentThemeIds)
applyTheme(nonSystemThemeName)
}
// Spec: spec/services/theme.md#resetAllThemeColors
static func resetAllThemeColors(_ pref: CodableDefault<[ThemeOverrides]>? = nil) {
let nonSystemThemeName = nonSystemThemeName()
let pref: CodableDefault<[ThemeOverrides]> = pref ?? themeOverridesDefault
let overrides = pref.get()
guard let themeId = currentThemeIdsDefault.get()[nonSystemThemeName],
var prevValue = overrides.getTheme(themeId)
else { return }
prevValue.colors = ThemeColors()
prevValue.wallpaper?.background = nil
prevValue.wallpaper?.tint = nil
pref.set(overrides.replace(prevValue))
applyTheme(currentThemeDefault.get())
}
static func resetAllThemeColors(_ pref: Binding<ThemeModeOverride>) {
var prevValue = pref.wrappedValue
prevValue.colors = ThemeColors()
prevValue.wallpaper?.background = nil
prevValue.wallpaper?.tint = nil
pref.wrappedValue = prevValue
}
// Spec: spec/services/theme.md#removeTheme
static func removeTheme(_ themeId: String?) {
var themes = themeOverridesDefault.get().map { $0 }
themes.removeAll(where: { $0.themeId == themeId })
themeOverridesDefault.set(themes)
}
}