Table of contents
1.
Introduction
2.
Characteristics of Grid Layout
2.1.
Background
2.2.
Column Width and Row Height
3.
Approach to creating GridLayout:
3.1.
Implementation of the approach 
3.1.1.
Output:
4.
Frequently Asked Questions
4.1.
What is the grid layout in Kivy?
4.2.
What does grid layout do?
4.3.
What is the grid layout in Python?
5.
Conclusion 
Last Updated: Mar 27, 2024

Grid Layout in Kivy without .kv file

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Introduction

In this blog, we will discuss Grid layout, how to implement it in python and the uses of grid layout. 

Kivy is platform-agnostic, meaning it can operate on Android, iOS, Linux, Windows, and other operating systems. Kivy allows you to write code once and have it run across multiple platforms. Although it is mainly used to create Android applications, it may also be used to develop desktop applications.

Characteristics of Grid Layout

  • The widget must always be positioned in a certain column or row. Each kid is automatically allocated a place in the children's list based on the layout setup and the child's index.
  • Grid Layout must always have one of the input restrictions listed below: GridLayout.cols or GridLayout.rows. If no cols or rows are specified, the Layout will throw an exception.
  • GridLayout organises children into a matrix. It splits the available space into columns and rows before adding widgets to a resulting "cell."
  • The row and columns are the same as in a matrix, but we may alter the size of each grid here.
  • The col default width and row default height attributes determine the initial size. By specifying the col force default or row force default properties, we may force the default size. This instructs the layout to disregard the width and size hint attributes of children and instead use the default size.

 

The first step in using a GridLayout would be to import it.

from kivy.uix.gridlayout import GridLayout

Background

You cannot specify insert a widget inside a specific column/row, unlike many other toolkits. The layout configuration and the kid's index in the children's list decide the position of each child automatically.

GridLayout.cols or GridLayout.rows are the two input constraints that must always be present in a GridLayout. The Layout will raise an exception if you don't specify cols or rows.

Column Width and Row Height

The column width/row height is calculated in three steps:

The col default width and row default height attributes determine the initial size. Use cols minimum or rows minimum to change the size of a single column or row.

The children's size hint x/size hint y are considered. If no widgets provide a size hint, the maximum size for all children is utilised.

Set the col force default or row force default attribute to force the default size. This instructs the layout to disregard the width and size hint attributes of children and instead use the standard size.

Approach to creating GridLayout:

  1.  Bring in kivy
  2.  Add kivyApp
  3.  Click the Import button.
  4.  Add Gridlayout
  5.  Determine the minimal version (optional)
  6.  Make an App class: -create a build function: add a widget (Buttons)
  7.  Retrieve the Layout/Widget/Class (according to requirement)
  8.  Execute a class instance

Implementation of the approach 

In the following example, all widgets have the same size. By standard, the size_hint is (1, 1), which means that a Widget will fill up the entire size of its parent:

Code:

# 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
 
# creates the button in kivy
# if not imported shows the error
from kivy.uix.button import Button
 
# 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
 
# creating the App class
class Grid_LayoutApp(App):
 
    # to build the application we have to
    # return a widget on the build() function.
    def build(self):
 
        # adding GridLayouts in App
        # Defining number of column
        # You can use row as well depends on need
        layout = GridLayout(cols = 2)
 
        # 1st row
        layout.add_widget(Button(text ='Hello 1'))
        layout.add_widget(Button(text ='World 1'))
 
        # 2nd row
        layout.add_widget(Button(text ='Hello 2'))
        layout.add_widget(Button(text ='World 2'))
 
        # 3rd row
        layout.add_widget(Button(text ='Hello 3'))
        layout.add_widget(Button(text ='World 3'))
 
        # 4th row
        layout.add_widget(Button(text ='Hello 4'))
        layout.add_widget(Button(text ='World 4'))
 
        # returning the layout
        return layout
 
# creating object of the App class
root = Grid_LayoutApp()
# run the App
root.run()

Output:

Frequently Asked Questions

What is the grid layout in Kivy?

In kivy, the image result for faqs on grid layout is The GridLayout creates a matrix of children. It divides the available space into columns and rows and then adds widgets to the "cells" that result. Version 1.0 brought changes. 7: For computing column/row sizes, the implementation has been updated to use the widget size hint.
 

What does grid layout do?

CSS Grid Layout excels in dividing a page into key regions or defining the size, position, and layer relationship between parts of an HTML primitive control. A grid layout, like tables, allows an author to align items into columns and rows.

 

What is the grid layout in Python?

The widgets are arranged in a two-dimensional table by the Grid geometry manager. Each "cell" in the resulting table can store a widget, and the master widget is divided into several rows and columns. Tkinter's grid manager is the most adaptable of geometry managers.

Conclusion 

In this blog, we have extensively discussed the Grid Layout in Kivy without.kv file. We hope that this article has provided you with additional information about the kivy and Grid layout without using the .kv file. So In this article, we will learn how can we use the grid layout without using the .kv file functionality and also give some styling to the button. And to learn in-depth about Kivy functions, check out the course on our Kivy on the Coding Ninjas website. And also, check out the awesome content on the Coding Ninjas Website, Android DevelopmentCoding Ninjas Studio ProblemsCoding Ninjas Studio Interview BundleCoding Ninjas Studio Interview Experiences, Coding Ninjas CoursesCoding Ninjas Studio Contests, and Coding Ninjas Studio Test SeriesDo upvote our blog in helping other ninjas grow.

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