python - 将复选框添加到 Canva Kivy

Question

我需要在此 Kivy Canvas 中添加一个复选框，但它不知道如何正确执行此操作。我需要该复选框来显示文件夹 Data 中所有文件的名称。然后用户检查他想要的文件，然后通过按下一个按钮（这里是红色的）它会返回一个文件名列表并调用一些函数。这就是我现在所在的位置。

from kivy.app import App
from kivy.core.window import Window
from kivy.uix.image import Image
from kivy.uix.widget import Widget
from kivy.metrics import dp
from kivy.lang import Builder

from kivy.uix.label import Label

from kivy.uix.button import Button
from kivy.base import runTouchApp

from kivy.uix.recycleview import RecycleView

from kivy.uix.popup import Popup



from kivy.uix.progressbar import ProgressBar 
from kivy.uix.boxlayout import BoxLayout
from kivy.clock import Clock
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.widget import Widget.
from kivy.properties import ObjectProperty




 import time
 import os

Builder.load_string('''<Game>
    ShootButton:


<ShootButton>

    Image: 
        source: 'logo.jpg'
        allow_stretch: True
        size: 300,300
        pos: 300, 400


    Image: 
        source: 'livre.jpg'
        allow_stretch: True
        size: 350, 350
        pos: 490,130

    Button:
        text: "Modifier Correspondance"
        size: 240,50
        font_size: 20
        pos: 100,300
        background_color :0, 1, 0, 1,
        on_press: root.shoot()

    Button:
        text: "Liste Fichiers"
        size: 240,50
        font_size: 20
        pos: 100,400
        background_color :0, 1, 0, 1,
        on_press: root.fire_popup()

    Button:
        text: "Ajouter Fichier"
        size: 240,50
        font_size: 20
        pos: 100,200
        background_color :0, 1, 0, 1,
        on_press: root.shoot2()

    Button:
        text: "Generer PDF"
        size: 180,50
        font_size: 20
        pos: 580,60
        background_color :1, 0, 0, 1,
        on_press: root.display()



         ''')


 Window.size = (900, 600)
 Window.clearcolor = (1, 1, 1, 1)




class Game(Widget):
    pass


class SimplePopup(Popup):
    pass

class SimplePopup2(Popup):
    pass

class ShootButton(Widget):

    def shoot(self):
        shooting = Bullet()
        shooting.bullet_fly()

    def shoot2(self):
        shooting = Bullet()
        shooting.bullet_fly2()

class Bullet(Widget):
    def bullet_fly(self):
        print("test")


    def bullet_fly2(self):
        os.system("open .")





class MyApp(App):
    def build(self):
        return Game()

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

标签： pythoncheckboxkivy

Answer 1

好的，这是你要求的很多东西。

首先，我们需要创建一个布局，其中标签作为文件名，复选框对应文件。

为此，我将使用 GridLayout，但您可以随心所欲。在此布局中，我们需要获取文件列表，使用复选框创建标签，最后查看标记了哪些框。因此，我们将创建一个具有三个函数的类，并使用 dict 将每个框链接到其文件：

class Grid(GridLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.cols = 2

        self.files = self.get_files()
        self.check_list = {}
        self.create_checks()


    def get_files(self):
        # Get your files herre
        return ['Hi', 'how', 'are', 'you?']

    def create_checks(self):
        # Create the checkboxes
        for item in self.files:
            self.add_widget(Label(text=item))
            self.check_list[item] = CheckBox()
            self.add_widget(self.check_list[item])

    def get_actives(self):
        # Check who is active (marked)
        actives = []
        for item in self.check_list:
            if self.check_list[item].state == 'down':
                actives.append(item)

        return actives

然后我们需要将这个类传递给我们的主要内容以向用户显示它。为此，我将使用弹出窗口，但同样，您可以随心所欲。所以我将开始将我们的内容添加到弹出窗口中，并创建一个函数来调用它。

class ShootButton(Widget):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        # Create popup with grid content
        self.pop_content = Grid()
        self.popup = Popup(title='', separator_height=0,
                           size_hint=(.8, .6),
                           content=self.pop_content)

    def open_pop(self):
        # You guessed! Opens the popup
        self.popup.open()

大部分完成，现在我们只需要检查按下按钮时标记了哪些复选框。所以我会得到你的函数display并用它来调用我们的get_actives函数：

def display(self):
    actives = self.pop_content.get_actives()
    print(actives)

这是完整的代码：

from kivy.app import App
from kivy.core.window import Window
from kivy.lang import Builder
from kivy.uix.popup import Popup
from kivy.uix.widget import Widget
from kivy.uix.gridlayout import GridLayout
from kivy.uix.checkbox import CheckBox
from kivy.uix.label import Label
import os

Builder.load_string('''<Game>
    ShootButton:


<ShootButton>

    Image: 
        source: 'logo.jpg'
        allow_stretch: True
        size: 300,300
        pos: 300, 400


    Image: 
        source: 'livre.jpg'
        allow_stretch: True
        size: 350, 350
        pos: 490,130

    Button:
        text: "Modifier Correspondance"
        size: 240,50
        font_size: 20
        pos: 100,300
        background_color :0, 1, 0, 1,
        on_press: root.shoot()

    Button:
        text: "Liste Fichiers"
        size: 240,50
        font_size: 20
        pos: 100,400
        background_color :0, 1, 0, 1,
        on_press: root.fire_popup()

    Button:
        text: "Ajouter Fichier"
        size: 240,50
        font_size: 20
        pos: 100,200
        background_color :0, 1, 0, 1,
        on_press: root.shoot2()

    Button:
        text: "Generer PDF"
        size: 180,50
        font_size: 20
        pos: 580,60
        background_color :1, 0, 0, 1,
        on_press: root.display()
         ''')

Window.size = (900, 600)
Window.clearcolor = (1, 1, 1, 1)


class Game(Widget):
    pass


class SimplePopup(Popup):
    pass


class SimplePopup2(Popup):
    pass


class Grid(GridLayout):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.cols = 2

        self.files = self.get_files()
        self.check_list = {}
        self.create_checks()

    def get_files(self):
        # Get your files here
        return ['Hi', 'how', 'are', 'you?']

    def create_checks(self):
        # Create the checkboxes
        for item in self.files:
            self.add_widget(Label(text=item))
            self.check_list[item] = CheckBox()
            self.add_widget(self.check_list[item])

    def get_actives(self):
        # Check who is active (marked)
        actives = []
        for item in self.check_list:
            if self.check_list[item].state == 'down':
                actives.append(item)

        return actives


class ShootButton(Widget):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        # Create popup with grid content
        self.pop_content = Grid()
        self.popup = Popup(title='Choose files', separator_height=0,
                           size_hint=(.8, .6),
                           content=self.pop_content)

    def shoot(self):
        shooting = Bullet()
        shooting.bullet_fly()
        self.open_pop()

    def shoot2(self):
        shooting = Bullet()
        shooting.bullet_fly2()

    def fire_popup(self):
        pass

    def open_pop(self):
        # You guessed! Opens the popup
        self.popup.open()

    def display(self):
        actives = self.pop_content.get_actives()
        print(actives)


class Bullet(Widget):
    def bullet_fly(self):
        print("test")

    def bullet_fly2(self):
        os.system("open .")


class MyApp(App):
    def build(self):
        return Game()


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