use wheel + ctrl to change font size

settings.py

@@ -1,9 +1,12 @@
+from typing import Callable
+
 from PyQt6.QtGui import QFont
 
 
 class Settings():
 
-    def __init__(self):
+    def __init__(self, callback_update_ui: Callable[[], None]):
+        self.callback_update_ui = callback_update_ui
         self.font_size(12)
 
     @staticmethod
@@ -18,4 +21,5 @@ class Settings():
 
     def font_size(self, font_size: int):
         self._font_size = font_size
-        self._font = QFont("monospace", font_size)
+        self._font = QFont("monospace", font_size)
+        self.callback_update_ui()