Question

我想制作一个输入一些字母的程序，它实时提供所有单词组合，但我只能显示几个，因为我无法弄清楚如何使用多行。我没有用过kivy很长一段时间有人可以帮帮我吗？

from kivy.app import App
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.uix.floatlayout import FloatLayout
import itertools



class Screen(BoxLayout):  

    def __init__(self, **kwargs ):
        super(Screen, self).__init__(**kwargs)
        self.orientation = "vertical"
        cuvinte = " "
        boxlayout2 = BoxLayout()
        button = Button()
        txt_instructions = Label(text = "Introduce your letters without any spaces between them")
        self.add_widget(txt_instructions)
        my_user_input = TextInput()
        boxlayout2.add_widget(my_user_input)
        self.add_widget(boxlayout2)   
        my_output = Label(halign = 'center')        
        self.add_widget(my_output)
        def callback(instance, value):
            cuvinte = " "
            lista2 = []
            lista3 = []
            n = value
            lista = list(n)
            for i in range(len(lista)):
                for word in itertools.permutations(lista):
                    lista2.append(''.join(word[0:len(word)-i]))

            for i in lista2:
                if i not in lista3:
                    lista3.append(i)
            lista3.sort()
            cuvinte = ' '.join(str(e) for e in lista3)
            my_output.text = cuvinte

        my_user_input.bind(text=callback)




class MyApp(App):

    def build(self):
        return Screen()


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

Answer 1

在TextInput小部件中添加multiline = True

my_user_input = TextInput(multiline=True)

Answer 2

要使用自动BOTH包装其文本的标签并在需要时以多行显示，您必须做几件事。

1）根据官方的Kivy教程，您需要设置标签的大小和位置，以便它可以跟随其父级大小的变化。

2）创建一个函数，根据标签

中显示的文本大小更新大小

3）使用更新功能

绑定标签

所以你的代码看起来像这样：

from kivy.app import App
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.uix.floatlayout import FloatLayout
import itertools


class Screen(BoxLayout):

    def __init__(self, **kwargs ):
        super(Screen, self).__init__(**kwargs)
        self.orientation = "vertical"
        cuvinte = " "
        boxlayout2 = BoxLayout()
        button = Button()
        txt_instructions = Label(text = "Introduce your letters without any spaces between them")
        self.add_widget(txt_instructions)
        my_user_input = TextInput()
        boxlayout2.add_widget(my_user_input)
        self.add_widget(boxlayout2)

        """THE LABEL HAS ITS SIZE AND POSITION SET TO FOLLOW THE PARENT'S"""
        self.my_output = Label(text_size= (None,None),
                          pos_hint={'center_x': 0.5, 'center_y': .95},
                          size_hint_y=None,
                          size = self.size,
                          height = self.size[1],
                          halign="center",
                          valign = "middle",)

        self.add_widget(self.my_output)

        """BINDING THE LABEL TO THE FUNCTION THAT UPDATES THE SIZE"""
        self.my_output.bind(size=self.setting_function)

        def callback(instance, value):
            cuvinte = " "
            lista2 = []
            lista3 = []
            n = value
            lista = list(n)
            for i in range(len(lista)):
                for word in itertools.permutations(lista):
                    lista2.append(''.join(word[0:len(word)-i]))

            for i in lista2:
                if i not in lista3:
                    lista3.append(i)
            lista3.sort()
            cuvinte = ' '.join(str(e) for e in lista3)
            self.my_output.text = cuvinte

        my_user_input.bind(text=callback)

    def setting_function(self, *args):
        """FUNCTION TO UPDATE THE LABEL TO ADJUST ITSELF ACCORDING TO SCREEN SIZE CHANGES"""
        self.my_output.pos_hint = {'center_x': 0.5, 'center_y': .85}
        self.my_output.text_size=self.size


class MyApp(App):

    def build(self):
        return Screen()


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

现在您的文字被包装并显示为多行： *当文字大小改变时 *当窗口大小改变时

P.S。当字母变得太多时，由于CPU / RAM不足，程序会冻结。您应该考虑限制用户可以输入的字母数量。

Kivy标签多行文字

2 个答案: