Kivy에서 그리드 레이아웃의 위치 (x, y 좌표)를 어떻게 설정할 수 있습니까?

Question

Kivy의 그리드 레이아웃을 사용하여 버튼을 만들 때 (0,0)에서 생성되고 이전 버튼의 길이 및 너비에 따라 여러 공백을 넘어서 이동하십시오. 그러나 화면 하단의 중간에 3x4 격자를 갖고 싶습니다.

나는 지금까지 이것을 가지고있다 :

import kivy
from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.uix.button import Button

class CalcApp(App):
    def build(self):
        layout = GridLayout(cols=3, row_force_default=True, row_default_height=50)
        layout.add_widget(Button(text='1', size_hint_x=None, width=100))
        layout.add_widget(Button(text='2', size_hint_x=None, width=100))
        layout.add_widget(Button(text='3', size_hint_x=None, width=100))
        layout.add_widget(Button(text='4', size_hint_x=None, width=100))
        layout.add_widget(Button(text='5', size_hint_x=None, width=100))
        layout.add_widget(Button(text='2', size_hint_x=None, width=100))
        layout.add_widget(Button(text='6', size_hint_x=None, width=100))
        layout.add_widget(Button(text='7', size_hint_x=None, width=100))
        layout.add_widget(Button(text='8', size_hint_x=None, width=100))
        layout.add_widget(Button(text='9', size_hint_x=None, width=100))
        layout.add_widget(Button(text='0', size_hint_x=None, width=100))
        layout.add_widget(Button(text='Enter', size_hint_x=None, width=100))
        return layout

CalcApp().run()

.

그래서, 어떻게 위치를 이동합니까?

Answer 1

import kivy
from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.uix.button import Button

class CalcApp(App):
    def build(self):
        layout = GridLayout(cols=3, row_force_default=True, row_default_height=50,
            pos_hint={'center_x':.5} , size_hint=(None, None))
            # ^ position grid in mid horizontally, ^ make grid use custom
            # size.
        # Bind the size of the gridlayout of to it's minimum_size(calculated
        # by children size)
        layout.bind(minimum_size = layout.setter('size'))
        # bind the top of the grid to it's height'
        layout.bind(height = layout.setter('top'))
        for x in (1, 2, 3, 4, 5, 2, 6, 7, 8, 9, 0):
            layout.add_widget(Button(text=str(x), size_hint_x=None, width=100))
        layout.add_widget(Button(text='Enter', size_hint_x=None, width=100))
        return layout

CalcApp().run()

.

KV Lang :: 동일한 코드

import kivy

from kivy.uix.gridlayout import GridLayout
from kivy.app import App
from kivy.lang import Builder

Builder.load_string('''
# a template Butt of type Button
[Butt@Button]
    # ctx.'attribute_name' is used to access the 
    # attributes defined in the instance of Butt.
    text: ctx.text
    # below vars are constant for every instance of Butt
    size_hint_x: None
    width: 100

<CalcApp>:
    cols: 3
    row_force_default: True
    row_default_height: 50
    pos_hint: {'center_x':.5}
    size_hint: (None, None)
    # size is updated whenever minimum_size is.
    size: self.minimum_size
    # top is updated whenever height is.
    top: self.height
    Butt:
        text: '1'
    Butt:
        text: '2'
    Butt:
        text: '3'
    Butt:
        text: '4'
    Butt:
        text: '5'
    Butt:
        text: '2'
    Butt:
        text: '6'
    Butt:
        text: '7'
    Butt:
        text: '8'
    Butt:
        text: '9'
    Butt:
        text: '0'
    Butt:
        text: 'Enter'
''')

class CalcApp(App, GridLayout):

    def build(self):
        return self

CalcApp().run()

.