theme_picker.py 文件源码

def build(self):
            main_widget = Builder.load_string("""
#:import MDRaisedButton kivymd.button.MDRaisedButton
#:import MDThemePicker kivymd.theme_picker.MDThemePicker
FloatLayout:
    MDRaisedButton:
        size_hint: None, None
        pos_hint: {'center_x': .5, 'center_y': .5}
        size: 3 * dp(48), dp(48)
        center_x: self.parent.center_x
        text: 'Open theme picker'
        on_release: MDThemePicker().open()
        opposite_colors: True
""")
            return main_widget