Add mask-based tray icon for macOS

src/vorta/tray_menu.py

@@ -1,6 +1,7 @@
 import os
+import sys
 
-from PyQt6.QtGui import QIcon
+from PyQt6.QtGui import QIcon, QImage, QPixmap
 from PyQt6.QtWidgets import QApplication, QMenu, QSystemTrayIcon
 
 from vorta.store.models import BackupProfileModel
@@ -77,8 +78,15 @@ def build_menu(self):
 
     def set_tray_icon(self, active=False):
         """
-        Use white tray icon, when on Gnome or in dark mode. Otherwise use dark icon.
+        Use white tray icon, when on Gnome or in dark mode.
+        Use mask tray icon when on macOS.
+        Otherwise use dark icon.
         """
-        icon_name = f"icons/hdd-o{'-active' if active else ''}.png"
-        icon = QIcon(get_asset(icon_name))
+        if sys.platform == 'darwin':
+            icon_name = f"icons/hdd-o{'-active' if active else ''}-mask.svg"
+            icon = QIcon(QPixmap(QImage.fromData(open(get_asset(icon_name), 'rb').read()).scaledToHeight(128)))
+            icon.setIsMask(True)
+        else:
+            icon_name = f"icons/hdd-o{'-active' if active else ''}.png"
+            icon = QIcon(get_asset(icon_name))
         self.setIcon(icon)