Support auto-night mode on macOS.

Telegram/SourceFiles/platform/mac/main_window_mac.mm

@@ -199,6 +199,7 @@ - (void) activeSpaceDidChange:(NSNotification *)aNotification {
 
 - (void) darkModeChanged:(NSNotification *)aNotification {
 	Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+		Core::App().settings().setSystemDarkMode(Platform::IsDarkMode());
 		Core::App().domain().notifyUnreadBadgeChanged();
 	});
 }
@@ -650,7 +651,7 @@ void _placeCounter(QImage &img, int size, int count, style::color bg, style::col
 	_private->setWindowBadge(string);
 
 	if (trayIcon) {
-		bool dm = objc_darkMode();
+		bool dm = Platform::IsDarkMenuBar();
 		auto &bg = (muted ? st::trayCounterBgMute : st::trayCounterBg);
 		QIcon icon;
 		QImage img(psTrayIcon(dm)), imgsel(psTrayIcon(true));

Telegram/SourceFiles/platform/mac/specific_mac.h

@@ -18,9 +18,7 @@ namespace Platform {
 
 void RemoveQuarantine(const QString &path);
 
-inline std::optional<bool> IsDarkMode() {
-	return std::nullopt;
-}
+[[nodiscard]] bool IsDarkMenuBar();
 
 inline void FallbackFontConfigCheckBegin() {
 }

Telegram/SourceFiles/platform/mac/specific_mac.mm

@@ -18,6 +18,7 @@
 #include "mainwindow.h"
 #include "history/history_location_manager.h"
 #include "base/platform/mac/base_utilities_mac.h"
+#include "base/platform/base_platform_info.h"
 
 #include <QtGui/QDesktopServices>
 #include <QtWidgets/QApplication>
@@ -137,6 +138,25 @@ void RemoveQuarantine(const QString &path) {
 	removexattr(local.data(), kQuarantineAttribute, 0);
 }
 
+bool IsDarkMenuBar() {
+	bool result = false;
+	@autoreleasepool {
+
+	NSDictionary *dict = [[NSUserDefaults standardUserDefaults] persistentDomainForName:NSGlobalDomain];
+	id style = [dict objectForKey:Q2NSString(strStyleOfInterface())];
+	BOOL darkModeOn = (style && [style isKindOfClass:[NSString class]] && NSOrderedSame == [style caseInsensitiveCompare:@"dark"]);
+	result = darkModeOn ? true : false;
+
+	}
+	return result;
+}
+
+std::optional<bool> IsDarkMode() {
+	return IsMac10_14OrGreater()
+		? std::make_optional(IsDarkMenuBar())
+		: std::nullopt;
+}
+
 void RegisterCustomScheme(bool force) {
 #ifndef TDESKTOP_DISABLE_REGISTER_CUSTOM_SCHEME
 	OSStatus result = LSSetDefaultHandlerForURLScheme(CFSTR("tg"), (CFStringRef)[[NSBundle mainBundle] bundleIdentifier]);

Telegram/SourceFiles/platform/mac/specific_mac_p.h

@@ -10,8 +10,6 @@ For license and copyright information please follow this link:
 // e is NSEvent*
 bool objc_handleMediaKeyEvent(void *e);
 
-bool objc_darkMode();
-
 void objc_debugShowAlert(const QString &str);
 void objc_outputDebugString(const QString &str);
 

Telegram/SourceFiles/platform/mac/specific_mac_p.mm

@@ -218,19 +218,6 @@ void SetApplicationIcon(const QIcon &icon) {
 
 } // namespace Platform
 
-bool objc_darkMode() {
-	bool result = false;
-	@autoreleasepool {
-
-	NSDictionary *dict = [[NSUserDefaults standardUserDefaults] persistentDomainForName:NSGlobalDomain];
-	id style = [dict objectForKey:Q2NSString(strStyleOfInterface())];
-	BOOL darkModeOn = (style && [style isKindOfClass:[NSString class]] && NSOrderedSame == [style caseInsensitiveCompare:@"dark"]);
-	result = darkModeOn ? true : false;
-
-	}
-	return result;
-}
-
 bool objc_handleMediaKeyEvent(void *ev) {
 	auto e = reinterpret_cast<NSEvent*>(ev);