当
double
点击label
时如何调用函数?现在它调用 single
点击。用什么代替 on_ref_press
?
layout.add_widget(
MyLabel(text='[ref=world]' + str('Test') + '[/ref]', padding_x=10,
size_hint_x=.35, halign='left',
markup=True, on_ref_press=partial(self.xyz, 10)))
一个可能的解决方案是创建事件,在下面的代码中我展示了一个示例:
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()
您还可以使用TouchBehavior。
from kivymd.uix.behaviors import TouchBehavior
class DoubleClickableLabel(Label, TouchBehavior):
def __init__(**kwargs):
self.custom_double_tap = None
if kwargs.get('on_double_tap') is not None:
self.custom_double_tap = kwargs['on_double_tap']
def on_double_tap(self, *args):
if self.custom_double_tap:
self.custom_double_tap()
然后创建一个小部件:
class MyApp(App):
def build(self):
label = DoubleClickableLabel(text='Hello world',
on_double_tap=self.callback)
return label
def callback(self, *args):
print("double clicked", args[0])