Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

By : Alan D. Moore
4.5 (2)
Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

4.5 (2)
By: Alan D. Moore

Overview of this book

Tkinter is widely used to build GUIs in Python due to its simplicity. In this book, you’ll discover Tkinter’s strengths and overcome its challenges as you learn to develop fully featured GUI applications. Python GUI Programming with Tkinter, Second Edition, will not only provide you with a working knowledge of the Tkinter GUI library, but also a valuable set of skills that will enable you to plan, implement, and maintain larger applications. You’ll build a full-blown data entry application from scratch, learning how to grow and improve your code in response to continually changing user and business needs. You’ll develop a practical understanding of tools and techniques used to manage this evolving codebase and go beyond the default Tkinter widget capabilities. You’ll implement version control and unit testing, separation of concerns through the MVC design pattern, and object-oriented programming to organize your code more cleanly. You’ll also gain experience with technologies often used in workplace applications, such as SQL databases, network services, and data visualization libraries. Finally, you’ll package your application for wider distribution and tackle the challenge of maintaining cross-platform compatibility.
Table of Contents (22 chapters)
19
Other Books You May Enjoy
20
Index
Appendices

Drawing and animation with Tkinter's Canvas

The Canvas widget is undoubtedly one of the most powerful widgets available in Tkinter. It can be used to build anything from custom widgets and views to complete user interfaces.

As the name implies, a Canvas widget is a blank area on which figures and images can be drawn. To understand its basic usage, let's create a small demo script.

Begin the script by creating a root window and a Canvas object:

# simple_canvas_demo.py
import tkinter as tk
root = tk.Tk()
canvas = tk.Canvas(
  root, background='black',
  width=1024, height=768
)
canvas.pack()

Creating a Canvas object is just like creating any other Tkinter widget. In addition to the parent widget and background argument, we can also specify width and height arguments to set the size of the Canvas. Setting the size of a Canvas widget is important, because it defines not only the size of the widget but also the viewport; that is, the area in which...