move font size update to settings class

bigtext.py

@@ -149,8 +149,7 @@ class InnerBigText(QWidget):
     def wheelEvent(self, event: QWheelEvent):
         direction = 1 if event.angleDelta().y() < 0 else -1
         if event.modifiers() == Qt.KeyboardModifier.ControlModifier:
-            font_size = min(max(4, self.model.settings.get_font_size()-direction),30)
-            self.model.settings.font_size(font_size)
+            self.model.settings.update_font_size(-direction)
             self.update()
         else:
             # print("wheel event fired :) %s" % (direction))

main.py

@@ -24,7 +24,7 @@ class MainWindow(QMainWindow):
     def __init__(self, *args, **kwargs):
         super(MainWindow, self).__init__(*args, **kwargs)
 
-        self.settings = Settings()
+        self.settings = Settings(lambda : self.update())
         self.setWindowTitle(self.tr("RavenLog"))
         self.setGeometry(0, 0, 640, 480)
         self.setDockNestingEnabled(True)
@@ -36,22 +36,13 @@ class MainWindow(QMainWindow):
 
 
         self.setCentralWidget(self.tabs)
-        self.main_tool_bar = self.create_main_tool_bar()
-        self.addToolBar(self.main_tool_bar)
+        #self.main_tool_bar = self.create_main_tool_bar()
+        #self.addToolBar(self.main_tool_bar)
         self.setStatusBar(QStatusBar(self))
         self.setMenuBar(self.create_menu_bar())
 
     def create_main_tool_bar(self):
         result = QToolBar("main toolbar")
-
-        result.addWidget(QLabel(self.tr("Font Size:")))
-        font_size = QComboBox(result)
-        for s in range(3,30):
-            font_size.addItem(str(s))
-        font_size.setCurrentText(str(self.settings.get_font_size()))
-        font_size.currentTextChanged.connect(self.update_font_size)
-        result.addWidget(font_size)
-
         return result
 
     def update_font_size(self, font_size):

settings.py

@@ -19,6 +19,10 @@ class Settings():
     def get_font_size(self) -> int:
         return self._font_size
 
+    def update_font_size(self, increment: int):
+        font_size = min(max(4, self._font_size + increment), 50)
+        self.font_size(font_size)
+
     def font_size(self, font_size: int):
         self._font_size = font_size
         self._font = QFont("monospace", font_size)