Book Image

Tkinter GUI Application Development Blueprints

By : Bhaskar Chaudhary
Book Image

Tkinter GUI Application Development Blueprints

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, media player, drawing application, chat application, screen saver, port scanner, and many 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 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 (15 chapters)
Tkinter GUI Application Development Blueprints
About the Author
About the Reviewers

Playing the drum machine

Now that we have a mechanism to load drum samples and a mechanism to define beat patterns in place, let us add the ability to play these beat patterns. In many ways, this is the core of our program.

Let us first understand the functionality that we want to achieve here.

Once the user has loaded one or more drum samples and has defined a beat pattern using the toggle buttons, we need to scan each column of the pattern to see if it finds a green button (a True value in our data structure).

If the value is True for a given location in the matrix, our code should play the corresponding drum sample before moving ahead. If two or more drum samples are selected in the same column, all the samples should play almost simultaneously.

Moreover, there should be a fixed time gap between the playing of each successive column, which will define the tempo of the music.

To achieve this functionality, we need to import the pygame module, to play the sounds, and the time module, to define...