Kivy:触摸标签以选中复选框 [英] Kivy: Touch the label to check the checkbox

问题描述

我正在努力为MCQ争取一个机会.在这里，我要一个功能，如果有人甚至单击与复选框相对应的标签，则也必须选中该复选框..是否可以在Kivy中进行?因为Kivy没有直接与复选框提供任何文本关联.

I am trying to make an aap for MCQ's. Here i want a function, if anyone even click on the label corresponding to a checkbox, that check box must also be checked.. Is it possible in Kivy? Because Kivy doesn't provide any text association with checkbox directly.

这是kv的一部分.

<MCQCheckBox@CheckBox>:
    color:0,0,0,1
    size_hint: 0.15, 1
    group: 'opts'

<MCQLabel@Label>:
    text_size: self.size
    valign: 'center'
    font_size: '13sp'
    color: 0,0,0,1

<MCQsGUI>:
   BoxLayout:
        orientation:'vertical'
        size_hint: 0.95, 0.7
        spacing: 2
        pos_hint: {'center_x': .5, 'center_y': .5}

    MCQBoxLayout:
        MCQCheckBox:
        MCQLabel:
            text:"option 1"
    MCQBoxLayout:
        MCQCheckBox:
        MCQLabel:
            text:"option 2"
    MCQBoxLayout:
        MCQCheckBox:
        MCQLabel:
            text:"option 3"
    MCQBoxLayout:
        MCQCheckBox:
        MCQLabel:
            text:"option 4"

推荐答案

您可以仅使用kv languaje和动态类来做到这一点:

You can do it using only kv languaje and dynamic classes:

• 要使标签的行为像按钮一样，只需使MCQLabel继承自Label和ButtonBehavior类.

要保持组自己的行为，您可以调用_do_press ()方法按下关联标签时，="=" nofollow noreferrer> ToggleButton 类(CheckBox继承自该类).

To keep the group's own behavior you can call the _do_press () method of the ToggleButton class (CheckBox inherits from it) when the asociated label is pressed.

test.kv:

<MCQCheckBox@CheckBox>:
    color: 0, 0, 0, 1
    size_hint: 0.15, 1


<MCQLabel@ButtonBehavior+Label>:
    text_size: self.size
    valign: 'center'
    font_size: '13sp'
    color: 0, 0, 0, 1


<MCQLabelCheckBox@BoxLayout>:
    text: ''
    group: ''

    MCQCheckBox:
        id: cb
        group: root.group

    MCQLabel:
        on_press: cb._do_press()
        text: root.text


<MCQsGUI>:
    canvas.before:
        Color:
            rgba: 1, 1, 1, 1
        Rectangle:
            pos: self.pos
            size: self.size

    MCQLabelCheckBox:
        text:"option 1"
        group: 'opts'

    MCQLabelCheckBox:
        text:"option 2"
        group: 'opts'

    MCQLabelCheckBox:
        text:"option 3"
        group: 'opts'

    MCQLabelCheckBox:
        text:"option 4"
        group: 'opts'

main.py:

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout


class MCQsGUI(BoxLayout):
    pass


class TestApp(App):
    def build(self):
        return MCQsGUI()


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

这篇关于Kivy:触摸标签以选中复选框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！