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Tkinter GUI Application Development Blueprints, Second Edition

You're reading from   Tkinter GUI Application Development Blueprints, Second Edition Build nine projects by working with widgets, geometry management, event handling, and more

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788837460
Length 422 pages
Edition 2nd Edition
Languages
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Author (1):
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Bhaskar Chaudhary Bhaskar Chaudhary
Author Profile Icon Bhaskar Chaudhary
Bhaskar Chaudhary
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Toc

Table of Contents (12) Chapters Close

Preface 1. Meet Tkinter FREE CHAPTER 2. Making a Text Editor 3. Programmable Drum Machine 4. Game of Chess 5. Building an Audio Player 6. Paint Application 7. Piano Tutor 8. Fun with Canvas 9. Multiple Fun Projects 10. Miscellaneous Tips 11. Other Books You May Enjoy

Looping over tracks

Let's add the feature that allows users to loop over tracks. We have already defined radio buttons to allow three choices, as shown in the following screenshot:

In essence, the player should provide a choice from the following three options:

  • No Loop: Play a track and end there
  • Loop Current: Play a single track repeatedly
  • Loop All: Looping through the entire playlist, one after another

The decision to follow one of these three options needs to be taken immediately after a particular track ends playing. The best place to judge whether a track has come to its end is from within the periodic updates loop that we created earlier.

Therefore, modify the manage_periodic_updates_during_play() method to add the following two lines of highlighted code (see code 5.08—view.py):

def manage_periodic_updates_during_play(self):
self.update_clock()
self.update_seek_bar...
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