Toggles whehter or not the text is currently italic.
        
        :param      state | <bool>

def setFontItalic(self, state):
        """
        Toggles whehter or not the text is currently italic.
        
        :param      state | <bool>
        """
        font = self.currentFont()
        font.setItalic(state)
        self.setCurrentFont(font)