Add inverted colour scheme listener for Windows, closes #77

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.

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

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
   }