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Python | Carousel Widget In Kivy using .kv file

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  • Last Updated : 12 Apr, 2022

Kivy is a platform independent GUI tool in Python. As it can be run on Android, IOS, Linux and Windows, etc. It is basically used to develop the Android application, but it does not mean that it can not be used on Desktops applications.

???????? Kivy Tutorial – Learn Kivy with Examples.

Carousel widget:

The Carousel widget provides the classic mobile-friendly carousel view where you can swipe between slides. You can add any content to the carousel and have it move horizontally or vertically. The carousel can display pages in a sequence or a loop. To work with this widget you must have to import:

from kivy.uix.carousel import Carousel
Basic Approach:
1) import kivy
2) import kivy App
3) import Gridlayout
4) import Carousel
5) set minimum version(optional)
6) Create as much as widget class as needed
7) create the App class
8) return the widget/layout etc class
9) Create Carousel.kv file:
        1) Create button( or what is needed)
        2) Arrange the on_release / on_press function
10) Run an instance of the class

In the below example we are creating the buttons in the App. In this we used load_previous() and load_next() functions.

load_next(mode=’next’) Animate to the next slide. load_previous() Animate to the previous slide.

Implementation of the Approach: main.py file: 

Python3




# Program to explain how to add carousel in kivy
   
# 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')
   
 
# The Carousel widget provides the
# classic mobile-friendly carousel
# view where you can swipe between slides
from kivy.uix.carousel import Carousel
 
# The GridLayout arranges children in a matrix.
# It takes the available space and
# divides it into columns and rows,
# then adds widgets to the resulting “cells”.
from kivy.uix.gridlayout import GridLayout
 
 
# Create the Layout Class
class Carousel(GridLayout):
    pass
 
# Create the App class
class CarouselApp(App):
    def build(self):
        # Set carousel widget as root
        root = Carousel()
 
        # for multiple pages
        for x in range(10):
            root.add_widget(Carousel())
        return root
 
 
# run the App
if __name__ == '__main__':
    CarouselApp().run()


Carousel.kv file: 

Python3




# Carousel.kv file of the code
 
# Carousel Creation
<Corousel>:
 
    rows: 2
 
    # It shows the id which is different for different pages
    Label:
        text: str(id(root))
 
    # This button will take you directly to the 3rd page   
    Button
        text: 'load(page 3)'
        on_release:
            carousel = root.parent.parent
            carousel.load_slide(carousel.slides[2])
 
    # load_previous() is used to go back to previous page
    Button
        text: 'prev'
        on_release:
            root.parent.parent.load_previous()
 
    # load_next() is used to go to next page
    Button
        text: 'next'
        on_release:
            root.parent.parent.load_next()


Output:


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