python - Kivy:GridLayout 内的水平滚动标签

Question

我正在尝试改编 ScrollView doc 中的代码在 GridLayout 内的水平轴上获得可滚动标签。 GridLayout 不应该可滚动，而只能滚动其中的标签。

对于我的应用程序，我无法使用 kv 语言(无论是在 .kv 还是构建器中)，因此代码必须使用 python。

from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.scrollview import ScrollView
from kivy.app import runTouchApp

layout = GridLayout(cols=1, spacing=10)

for i in range(10):
    label = Label(text="abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz_abcdefghijklmnopqrstuvwxyz", height = 30, size_hint_x=None, width=400)
    label.bind(minimum_width=label.setter('width'))
    root = ScrollView(size_hint=(None, 1), size=(label.width, label.height))
    root.add_widget(label)
    layout.add_widget(root)


runTouchApp(layout)

Answer 1

到目前为止，这是有效的:

import kivy

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

class Test(App):
    def build(self):
        layout  = GridLayout (cols=3)
        for i in range(3):
            l = Label(font_size=15, size_hint_x= None, width=300, text="This is a very looooooooooooooooooooonnnnnnnnnnnnnnnnnnnng text. Indeed it is a very loooooooooooooooooooooonnnnnnnnnnnnnnnng text")
            l.bind(size_hint_min_x=l.setter('width'))
            scroll = ScrollView(size_hint=(None, None), size=(100, 400), pos_hint={'center_x':.5, 'center_y':.5})
            scroll.add_widget(l)

            layout.add_widget(scroll)
        return layout


Test().run()