166 lines
4.7 KiB
Objective-C
166 lines
4.7 KiB
Objective-C
/*
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Copyright 2016 OpenMarket Ltd
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Copyright 2017 Vector Creations Ltd
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Copyright 2019 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "ThemeService.h"
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#import "GeneratedInterface-Swift.h"
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NSString *const kThemeServiceDidChangeThemeNotification = @"kThemeServiceDidChangeThemeNotification";
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@implementation ThemeService
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@synthesize themeId = _themeId;
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+ (ThemeService *)shared
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{
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static ThemeService *sharedOnceInstance;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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sharedOnceInstance = [ThemeService new];
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});
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return sharedOnceInstance;
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}
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- (void)setThemeId:(NSString *)theThemeId
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{
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_themeId = theThemeId;
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[self reEvaluateTheme];
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}
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- (void)setTheme:(id<Theme> _Nonnull)theme
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{
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// update only if really changed
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if (![_theme.identifier isEqualToString:theme.identifier])
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{
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_theme = theme;
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[self updateAppearance];
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[[NSNotificationCenter defaultCenter] postNotificationName:kThemeServiceDidChangeThemeNotification object:self];
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}
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}
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- (id<Theme>)themeWithThemeId:(NSString*)themeId
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{
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id<Theme> theme;
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if (themeId == nil || [themeId isEqualToString:@"auto"])
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{
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if (@available(iOS 13, *))
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{
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// Translate "auto" into a theme with UITraitCollection
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themeId = ([UITraitCollection currentTraitCollection].userInterfaceStyle == UIUserInterfaceStyleDark) ? @"dark" : @"light";
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}
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else
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{
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// Translate "auto" into a theme
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themeId = UIAccessibilityIsInvertColorsEnabled() ? @"dark" : @"light";
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}
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}
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if ([themeId isEqualToString:@"dark"])
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{
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theme = [DarkTheme new];
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}
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else if ([themeId isEqualToString:@"black"])
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{
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theme = [BlackTheme new];
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}
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else
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{
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// Use light theme by default
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theme = [DefaultTheme new];
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}
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return theme;
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}
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- (BOOL)isCurrentThemeDark
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{
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if ([self.theme.identifier isEqualToString:@"dark"] || [self.theme.identifier isEqualToString:@"black"])
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{
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return YES;
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}
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return NO;
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}
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#pragma mark - Private methods
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- (instancetype)init
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{
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self = [super init];
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if (self)
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{
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// Riot Colors not yet themeable
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_riotColorCuriousBlue = [[UIColor alloc] initWithRgb:0x2A9EDB];
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if (@available(iOS 13, *))
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{
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// Observe application did become active for iOS appearance setting changes
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidBecomeActive) name:UIApplicationDidBecomeActiveNotification object:nil];
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}
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else
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{
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// Observe "Invert Colours" settings changes (available since iOS 11)
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(accessibilityInvertColorsStatusDidChange) name:UIAccessibilityInvertColorsStatusDidChangeNotification object:nil];
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}
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[self reEvaluateTheme];
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}
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return self;
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}
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- (void)reEvaluateTheme
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{
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self.theme = [self themeWithThemeId:self.themeId];
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}
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- (void)accessibilityInvertColorsStatusDidChange
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{
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[self reEvaluateTheme];
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}
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- (void)applicationDidBecomeActive
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{
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[self reEvaluateTheme];
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}
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- (void)updateAppearance
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{
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[UIScrollView appearance].indicatorStyle = self.theme.scrollBarStyle;
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// Remove the extra height added to section headers in iOS 15
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if (@available(iOS 15.0, *))
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{
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UITableView.appearance.sectionHeaderTopPadding = 0;
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}
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// Define the navigation bar text color
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[[UINavigationBar appearance] setTintColor:self.theme.tintColor];
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// Define the UISearchBar cancel button color
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[[UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]] setTitleTextAttributes:@{ NSForegroundColorAttributeName : self.theme.tintColor } forState: UIControlStateNormal];
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[[UIStackView appearanceWhenContainedInInstancesOfClasses:@[[UINavigationBar class]]] setSpacing:-7];
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[[UIStackView appearanceWhenContainedInInstancesOfClasses:@[[UINavigationBar class]]] setDistribution:UIStackViewDistributionEqualCentering];
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}
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@end
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