Kivy es una herramienta GUI independiente de la plataforma en Python. Como se puede ejecutar en Android, IOS, Linux y Windows, etc. B谩sicamente se usa para desarrollar la aplicaci贸n de Android, pero eso no significa que no se pueda usar en aplicaciones de escritorio.
Burbuja:
El widget Bubble es una forma de men煤 o una peque帽a ventana emergente donde las opciones del men煤 se apilan vertical u horizontalmente. La burbuja contiene una flecha que apunta en la direcci贸n que elija.
Para elegir la direcci贸n en la que se usan las puntas de flecha:
Burbuja(arrow_pos=’top_mid’)
La orientaci贸n de la burbuja es horizontal por defecto, pero puede cambiarla con el comando:
orientaci贸n = ‘vertical’
Para agregar elementos a la burbuja:
bubble = Bubble(orientaci贸n = ‘vertical’)
bubble.add_widget(your_widget_instance)
Para eliminar elementos:
bubble.remove_widget(widget)
o
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
# Implementaci贸n del Enfoque:
# c贸digo .py:
# Program to Show how to create a switch聽
# import kivy module聽聽聽聽
import kivy聽聽
聽聽聽聽聽聽聽
# base Class of your App inherits from the App class.聽聽聽聽
# app:always refers to the instance of your application聽聽聽
from kivy.app import App聽
聽聽聽聽聽
# this restrict the kivy version i.e聽聽
# below this kivy version you cannot聽聽
# use the app or software聽聽
kivy.require('1.9.0')聽
聽聽
# module consists the floatlayout聽聽
# to work with FloatLayout first聽聽
# you have to import it聽聽
from kivy.uix.floatlayout import FloatLayout
聽聽
# The Button is a Label with associated
# actions that are triggered
# when the button is pressed聽
from kivy.uix.button import Button
聽聽
# 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
聽聽
# 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
聽聽聽
聽聽
# Create the Bubble class
# on which the .kv file is
class Cut_copy_paste(Bubble):
聽聽聽聽pass
聽聽
# Create the Layout Class
class BubbleDemo(FloatLayout):
聽聽聽
聽聽聽聽def __init__(self, **kwargs):
聽聽聽聽聽聽聽聽super(BubbleDemo, self).__init__(**kwargs)
聽聽聽聽聽聽聽聽self.but_bubble = Button(text ='Press to show bubble')
聽聽聽聽聽聽聽聽self.but_bubble.bind(on_release = self.show_bubble)
聽聽聽聽聽聽聽聽self.add_widget(self.but_bubble)
聽聽聽聽聽聽聽聽self.bubb = Cut_copy_paste()
聽聽
聽聽聽聽# Defining the function to show the bubble
聽聽聽聽def show_bubble(self, *l):
聽聽聽聽聽聽聽聽self.add_widget(self.bubb)
聽聽聽聽聽聽聽聽聽聽聽聽聽聽
# Create the App class
class BubbleApp(App):
聽聽聽聽def build(self):
聽聽聽聽聽聽聽聽return BubbleDemo()
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# run the App
if __name__ == '__main__':
聽聽聽聽BubbleApp().run()
Archivo .kv:
# .kv file of the bubble
聽聽
# Creating bubble
<Cut_copy_paste>:
聽聽聽聽size_hint: (None, None)
聽聽聽聽size: (160, 120)
聽聽聽聽pos_hint: {'center_x': .5, 'y': .6}
聽聽聽聽BubbleButton:
聽聽聽聽聽聽聽聽text: 'Cut'
聽聽聽聽BubbleButton:
聽聽聽聽聽聽聽聽text: 'Copy'
聽聽聽聽BubbleButton:
聽聽聽聽聽聽聽聽text: 'Paste'
Producci贸n:
Publicaci贸n traducida autom谩ticamente
Art铆culo escrito por YashKhandelwal8 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA