Book Image

Tkinter GUI Application Development Blueprints - Second Edition

By : Bhaskar Chaudhary
Book Image

Tkinter GUI Application Development Blueprints - Second Edition

By: Bhaskar Chaudhary

Overview of this book

Tkinter is the built-in GUI package that comes with standard Python distributions. It is a cross-platform package, which means you build once and deploy everywhere. It is simple to use and intuitive in nature, making it suitable for programmers and non-programmers alike. This book will help you master the art of GUI programming. It delivers the bigger picture of GUI programming by building real-world, productive, and fun applications such as a text editor, drum machine, game of chess, audio player, drawing application, piano tutor, chat application, screen saver, port scanner, and much more. In every project, you will build on the skills acquired in the previous project and gain more expertise. You will learn to write multithreaded programs, network programs, database-driven programs, asyncio based programming and more. You will also get to know the modern best practices involved in writing GUI apps. With its rich source of sample code, you can build upon the knowledge gained with this book and use it in your own projects in the discipline of your choice.
Table of Contents (12 chapters)

Adding functionality to the remaining buttons


We will now code the features related to the remaining toolbar buttons:

Specifically, we will code the following functions: draw_text, delete_item, fill_item, duplicate_item, move_to_top, drag_item, enlarge_item_size, and reduce_item_size.

Let's start with the code for draw_text. When a user clicks on the draw_text button, we want to show the following options in the top bar:

The user can enter text in the textbox and specify its font size and fill color. Once the user presses the Go button, the text appears on the center of the canvas.

Let us, therefore, define the draw_text_options method as follows (see code 6.08.py):

def draw_text_options(self):
Label(self.top_bar, text='Text:').pack(side="left")
self.text_entry_widget = Entry(self.top_bar, width=20)
self.text_entry_widget.pack(side="left&quot...