Python|泡在kivy

Kivy 是Python中一个独立于平台的 GUI 工具。因为它可以在Android、IOS、linux和Windows等平台上运行。它基本上是用来开发Android应用程序的，但这并不意味着它不能在桌面应用程序上使用。

👉🏽 Kivy Tutorial – Learn Kivy with Examples.

气泡 ：

Bubble 小部件是一种菜单形式或一个小弹出窗口，其中菜单选项垂直或水平堆叠。气泡包含一个指向您选择的方向的箭头。

要选择箭头使用的方向：

Bubble(arrow_pos=’top_mid’)

默认情况下，气泡的方向是水平的，但您可以通过以下命令更改它：

orientation = ‘vertical’

要将项目添加到气泡中：

bubble = Bubble(orientation = ‘vertical’)
bubble.add_widget(your_widget_instance)

要删除项目：

bubble.remove_widget(widget)
or
bubble.clear_widgets()

Basic Approach :
1) import kivy
2) import kivyApp
3) import Button
4) import Floatlayout(according to need)
5) import Bubble
6) import object property
7) Create Layout class:
8) Create App class
9) create .kv file (name same as the app class):
        1) createBubble
10) return Layout/widget/Class(according to requirement)
11) Run an instance of the class

# 方法的实施：

# .py 代码：

# Program to Show how to create a switch 
# import kivy module    
import kivy  
       
# base Class of your App inherits from the App class.    
# app:always refers to the instance of your application   
from kivy.app import App 
     
# this restrict the kivy version i.e  
# below this kivy version you cannot  
# use the app or software  
kivy.require('1.9.0') 
  
# module consists the floatlayout  
# to work with FloatLayout first  
# you have to import it  
from kivy.uix.floatlayout import FloatLayout
  
# The Button is a Label with associated
# actions that are triggered
# when the button is pressed 
from kivy.uix.button import Button
  
# The Bubble widget is a form of menu or a
# small popup where the menu options
# are stacked either vertically or horizontally.
from kivy.uix.bubble import Bubble
  
# ObjectProperty is a specialized sub-class of the
# Property class, so it has the same
# initialisation parameters as it:
# By default, a Property always takes a default value[.]
from kivy.properties import ObjectProperty
   
  
# Create the Bubble class
# on which the .kv file is
class Cut_copy_paste(Bubble):
    pass
  
# Create the Layout Class
class BubbleDemo(FloatLayout):
   
    def __init__(self, **kwargs):
        super(BubbleDemo, self).__init__(**kwargs)
        self.but_bubble = Button(text ='Press to show bubble')
        self.but_bubble.bind(on_release = self.show_bubble)
        self.add_widget(self.but_bubble)
        self.bubb = Cut_copy_paste()
  
    # Defining the function to show the bubble
    def show_bubble(self, *l):
        self.add_widget(self.bubb)
              
# Create the App class
class BubbleApp(App):
    def build(self):
        return BubbleDemo()
  
# run the App
if __name__ == '__main__':
    BubbleApp().run()

.kv 文件：

# .kv file of the bubble
  
# Creating bubble
:
    size_hint: (None, None)
    size: (160, 120)
    pos_hint: {'center_x': .5, 'y': .6}
    BubbleButton:
        text: 'Cut'
    BubbleButton:
        text: 'Copy'
    BubbleButton:
        text: 'Paste'

输出：