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

Adding toolbar buttons

Next, we need to add 16 buttons to the left toolbar. Further, depending on which button is clicked, different options would show up in the top bar as shown here:

We do not want our code structure to be bloated by conditional logic to switch among these 16 functions. Therefore, we will call these methods dynamically.

We first begin by defining a tuple of all 16 function names (see code

    tool_bar_functions = (
        "draw_line", "draw_oval", "draw_rectangle", "draw_arc",
        "draw_triangle", "draw_star", "draw_irregular_line", "draw_super_shape", "draw_text", "delete_item", "fill_item", "duplicate_item", "move_to_top", "drag_item", "enlarge_item_size", "reduce_item_size"

Doing so ensures that we do not have to call each method explicitly from our code. We can instead use the index of the tuple to retrieve the method name and call it dynamically using:

getattr(self, self.toolbar_functions[index])

This makes sense here, because we would eventually add...