From 57a1060ba7a0b8b2f2b36aedcd60999c247076cb Mon Sep 17 00:00:00 2001
From: nathanlesage <nathan.lesage@mailbox.org>
Date: Sat, 13 Apr 2019 11:36:42 +0200
Subject: [PATCH] Add inverted colour scheme listener for Windows, closes #77

---
 CHANGELOG.md                                 | 2 +-
 source/main/providers/appearance-provider.js | 8 ++++++++
 source/renderer/dialog/preferences.js        | 2 +-
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6072af925..be212481b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## GUI and Functionality
 
-- **New Feature**: Zettlr can now automatically switch between light and dark mode either based on a fixed schedule or, if you are using macOS, based on the appearance of the operating system.
+- **New Feature**: Zettlr can now automatically switch between light and dark mode either based on a fixed schedule or, if you are using macOS or Windows, based on the appearance of the operating system.
 - **New Feature**: Add words to the user defined dictionary.
 - Display contributors tab on the about dialog containing the names of all authors of the translation files.
 - The dictionary loading mechanism works far more reliably now.
diff --git a/source/main/providers/appearance-provider.js b/source/main/providers/appearance-provider.js
index c13e279aa2..ec9b84248a 100644
--- a/source/main/providers/appearance-provider.js
+++ b/source/main/providers/appearance-provider.js
@@ -53,6 +53,14 @@ class AppearanceProvider extends EventEmitter {
         // Set the var accordingly
         global.config.set('darkTheme', systemPreferences.isDarkMode())
       })
+    } else if (process.platform === 'win32') {
+      // On Windows, we achieve the same effect by listening for inverted colour
+      // scheme changes.
+      systemPreferences.on('inverted-color-scheme-changed', (event, invertedColorScheme) => {
+        if (this._mode !== 'system') return
+        // Also set the var accordingly
+        global.config.set('darkTheme', invertedColorScheme)
+      })
     }
 
     // Subscribe to configuration updates
diff --git a/source/renderer/dialog/preferences.js b/source/renderer/dialog/preferences.js
index 2b79803b45..81042f80a6 100644
--- a/source/renderer/dialog/preferences.js
+++ b/source/renderer/dialog/preferences.js
@@ -36,7 +36,7 @@ class PreferencesDialog extends ZettlrDialog {
     data.attachmentExtensions = data.attachmentExtensions.join(', ')
 
     // Determine the ability of the OS to switch to dark mode
-    data.hasOSDarkMode = (process.platform === 'darwin')
+    data.hasOSDarkMode = ['darwin', 'win32'].includes(process.platform)
     return data
   }