From 0915586b791b64ada93db6d5ab562fdd21b8d04a Mon Sep 17 00:00:00 2001
From: Andre Meyering <info@andremeyering.de>
Date: Tue, 23 Apr 2024 19:53:00 +0200
Subject: [PATCH] fix(macOS): Support building and running on macOS 10.13 again

We don't support darkmode on macOS 10.x anymore.  Users can use our Qt6
build instead.
---
 CMakePresets.json        | 16 ++++++++++++++++
 src/ui/MacUiUtilities.mm | 10 +++++++++-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/CMakePresets.json b/CMakePresets.json
index 3fe035729f..182a7c1587 100644
--- a/CMakePresets.json
+++ b/CMakePresets.json
@@ -13,6 +13,18 @@
                 "ENABLE_LTO": "ON"
             }
         },
+        {
+            "name": "release-macOS-qt5",
+            "displayName": "release macOS Qt5",
+            "generator": "Unix Makefiles",
+            "binaryDir": "${sourceDir}/build/${presetName}",
+            "cacheVariables": {
+                "CMAKE_BUILD_TYPE": "Release",
+                "ENABLE_COLOR_OUTPUT": "ON",
+                "CMAKE_EXPORT_COMPILE_COMMANDS": "ON",
+                "ENABLE_LTO": "ON"
+            }
+        },
         {
             "name": "debug",
             "displayName": "Debug",
@@ -99,6 +111,10 @@
           "name": "release",
           "configurePreset": "release"
         },
+        {
+          "name": "release-macOS-qt5",
+          "configurePreset": "release-macOS-qt5"
+        },
         {
           "name": "asan",
           "configurePreset": "asan"
diff --git a/src/ui/MacUiUtilities.mm b/src/ui/MacUiUtilities.mm
index c74a0778d8..98a6338324 100644
--- a/src/ui/MacUiUtilities.mm
+++ b/src/ui/MacUiUtilities.mm
@@ -2,19 +2,27 @@
 
 #undef slots
 #import <Cocoa/Cocoa.h>
+#include <QtVersionChecks>
 
 namespace mediaelch {
 namespace ui {
 
 bool macIsInDarkTheme()
 {
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    // macOS 10.13 doesn't support NSAppearanceNameDarkAqua and we can't build it on it.
+    // The easiest way I found was to just drop support for dark mode on macOS 10.X.
+    // With macOS 11 and later, users can use our Qt6 version.
+    return false;
+#else
     // See tutorial at <https://successfulsoftware.net/2021/03/31/how-to-add-a-dark-theme-to-your-qt-application/>
     if (__builtin_available(macOS 10.14, *)) {
         auto appearance = [NSApp.effectiveAppearance
-            bestMatchFromAppearancesWithNames:@[NSAppearanceNameAqua, NSAppearanceNameDarkAqua]];
+            bestMatchFromAppearancesWithNames:@[ NSAppearanceNameAqua, NSAppearanceNameDarkAqua ]];
         return [appearance isEqualToString:NSAppearanceNameDarkAqua];
     }
     return false;
+#endif
 }
 
 } // namespace ui