Question

因此，我一直试图在Kivy上打开一个弹出窗口，并在按Escape键时将其关闭。但是我发现自己必须按两次，然后发现它正在打开两个弹出窗口。

from kivy.app import App
from kivy.uix.widget import Widget
from kivy.core.window import Window
from kivy.uix.popup import Popup
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button

from kivy.config import Config
Config.set('kivy', 'exit_on_escape', '0')

class KeyDown(App):
    def build(self):
        self.popup_exists = 0
        Window.bind(on_key_down=self.key_action)
        return Widget()

    def key_action(self, *args):
        key1 = args[1]
        key2 = args[2]
        special_keys = args[4]
        letter = args[3]

        if special_keys == ['ctrl'] and letter == 'f':                          # Ctrl-F
            print('Find')
            self.open_find_dialog()
        if key1 == 13 and key2 == 40 and self.popup_exists == 1:                # ENTER KEY
            pass
        if key1 == 27 and key2 == 41 and self.popup_exists == 1:    # ESC
            self.find_window.dismiss()

    def open_find_dialog(self):
        content = BoxLayout(orientation='horizontal')
        col1_cont = BoxLayout(size_hint_x = 2,orientation = 'vertical')
        col2_cont = BoxLayout(size_hint_x = 4,orientation = 'vertical')
        find_labl = Label(text='Find',size_hint_y=None, height = 40)
        repl_labl = Label(text='Replace',size_hint_y=None, height = 40)

        find_text = TextInput(text='', size_hint_y = None, height = 40)
        repl_text = TextInput(text='', size_hint_y = None, height = 40)
        col1_cont.add_widget(find_labl)
        col1_cont.add_widget(repl_labl)
        col2_cont.add_widget(find_text)
        col2_cont.add_widget(repl_text)

        content.add_widget(col1_cont)
        content.add_widget(col2_cont)
        self.find_window = Popup(title='Find and Replace',content = content,size_hint=(None, None), size=(240, 140))
        self.find_window.open()
        self.popup_exists = 1
if __name__ == '__main__':
    KeyDown().run()

有人知道为什么要打开两个弹出窗口吗？我如何防止它这样做？

Kivy打开两个弹出窗口，而我只希望其中一个

0 个答案: