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.
Progressbar Widget:
ProgressBar widget is used to visualize the progress of some task. Only the horizontal mode is currently supported: the vertical mode is not yet available. The progress bar has no interactive elements and is a display-only widget.
To work with the progressbar widget you must have to import it by the command:
from kivy.uix.progressbar import ProgressBar
The progress bar take takes two arguments:
1) max: Maximum value allowed for value. It is a Numericproperty and defaults to 100.
2) value: Current Value for the slider
Basic Approach:
1) import kivy
2) import kivyApp
3) import progressbar
4) import Boxlayout(according to need)
5) Set minimum version(optional)
6) Create Layout class:
7) Create App class
8) Create .kv file:
1) Add progress bar
2) Add label
3) Add canvas if you want as i did
8) return Layout/widget/Class(according to requirement)
9) Run an instance of the class
Implementation of the Approach:
.py file
# Program to Show how to create a Progressbar in .kv file # 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 Label widget is for rendering text. from kivy.uix.label import Label # The ProgressBar widget is used to # visualize the progress of some task from kivy.uix.progressbar import ProgressBar # BoxLayout arranges children in a vertical or horizontal box. # or help to put the children at the desired location. from kivy.uix.boxlayout import BoxLayout # The class whose internal work is in kv file class ProgBar(BoxLayout): pass # Create the App Class class mainApp(App): def build(self): return ProgBar() # Create the run if __name__=='__main__': mainApp().run() |
.kv file
# .kv file # Extension of ProgBar class in .kv file <ProgBar>: orientation: 'vertical' # Creating the background of the App canvas: Color: rgb: .45, .28, .5 Rectangle: pos: self.pos size: self.size # Providing label to the pg bar Label: text: '[size = 40px]Progress Bar 1 (at .25)' color: .5, 0, .5, 1 markup: True # Creating thepg bar of specific value ProgressBar: value: .25 min: 0 max: 1 pos_hint: {'x':.1} size_hint_x: .8 # Providing label to the pg bar Label: text: '[size = 40px]Progress Bar 2 (at .55)' color: .5, 0, .5, 1 markup: True # Creating thepg bar of specific value ProgressBar: value: .55 min: 0 max: 1 pos_hint: {'x':.1} size_hint_x: .8 |
Output:
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