Adjust the tabWidget font size relative to the base app font

Author: Lee Miller

src/bitmessageqt/bitmessageui.py

@@ -61,7 +61,8 @@ def setupUi(self, MainWindow):
         self.tabWidget.setMinimumSize(QtCore.QSize(0, 0))
         self.tabWidget.setBaseSize(QtCore.QSize(0, 0))
         font = QtGui.QFont()
-        font.setPointSize(9)
+        base_size = QtGui.QApplication.instance().font().pointSize()
+        font.setPointSize(int(base_size * 0.75))
         self.tabWidget.setFont(font)
         self.tabWidget.setTabPosition(QtGui.QTabWidget.North)
         self.tabWidget.setTabShape(QtGui.QTabWidget.Rounded)