kivy double click 雙擊

from kivy.app import App from kivy.uix.label import Label class DoubleClickableLabel(Label): def __init__(self, **kwargs): Label.__init__(self, **kwargs) self.register_event_type('on_double_press') if kwargs.get("on_double_press") is not None: self.bind(on_double_press=kwargs.get("on_double_press")) def on_touch_down(self, touch): if touch.is_double_tap: self.dispatch('on_double_press', touch) return True return Label.on_touch_down(self, touch) def on_double_press(self, *args): pass class MyApp(App): def build(self): label = DoubleClickableLabel(text='Hello world', on_double_press=self.callback) return label def callback(self, *args): print("double clicked", args[0]) if __name__ == '__main__': MyApp().run()