Python kivy可以实现这个弹窗吗？

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout


class MyGridLayout(GridLayout):
    def __init__(self, **kwargs):
        super(MyGridLayout, self).__init__(**kwargs)

        # 设置行和列
        self.cols = 2
        self.rows = 3

        # 添加标签，用于接收用户输入
        self.add_widget(Label(text="Enter Your Name: "))

        # 添加输入框，用于接收用户输入
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)

        # 添加标签，用于接收用户输入
        self.add_widget(Label(text="Enter Your Password: "))

        # 添加输入框，用于接收用户输入
        self.password = TextInput(multiline=False, password=True)
        self.add_widget(self.password)

        # 创建登录按钮
        self.submit = Button(text="Login")
        self.submit.bind(on_press=self.validate_user)

        # 添加按钮
        self.add_widget(self.submit)

    def validate_user(self, instance):
        # 检查用户是否输入了正确的用户名和密码
        if self.username.text != "admin" or self.password.text != "admin":
            # 如果用户名或密码不正确，则创建弹窗
            invalid_popup = Popup(title="Invalid Login",
                                  content=Label(text="Invalid Username or Password."),
                                  size_hint=(None, None), size=(400, 400))

            # 显示弹窗
            invalid_popup.open()
        else:
            # 如果用户名和密码都正确，则创建弹窗显示欢迎消息
            welcome_popup = Popup(title="Welcome",
                                  content=Label(text="Welcome Admin!"),
                                  size_hint=(None, None), size=(400, 400))

            # 显示弹窗
            welcome_popup.open()


class MyApp(App):
    def build(self):
        # 创建一个GridLayout对象，并将其作为主窗口
        return MyGridLayout()


if __name__ == '__main__':
    MyApp().run()