Kivy標簽多行文字

Question

我想制作一個輸入了一些字母的程序，它可以實時給出所有單詞的組合，但是我只能顯示一些，因為我不知道如何使用多行。很久。 誰能幫我嗎？

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

在您的TextInput小部件中添加multiline = True

my_user_input = TextInput(multiline=True)

Answer 2

要使用自動包裝標簽的文本並在需要時以多行顯示的方式，您必須做幾件事。

1）根據官方的Kivy教程，您需要設置標簽的大小和位置，以便它可以跟隨其父尺寸的變化。

2）創建一個根據標簽中顯示的文本大小更新大小的函數

3）將標簽與更新功能綁定

因此您的代碼可能如下所示：

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()

現在，您的文本將被換行並顯示為多行：*當文本大小更改時*當窗口大小更改時

PS當字母過多時，由於CPU / RAM不足，程序將凍結。 您應該考慮限制用戶可以輸入的字母數。