✅ Improved & fixed the QR_GUI application

[yashksaini-coder]

Pull Request for PyVerse 💡

Requesting to submit a pull request to the PyVerse repository.

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Issue Title

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🐛Bug Fix: Improper QR_GUI implementation

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Info about the Related Issue

What's the goal of the project?
PyVerse is an open-source collection of diverse Python projects, tools, and scripts, ranging from beginner to advanced, across various domains like machine learning, web development, and automation.

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Name

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Yash K. Saini

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GitHub ID

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yashksaini-coder

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[email protected]

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GSSoC- Ext

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Closes

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Closes: #815

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Describe the Add-ons or Changes You've Made

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This pull request refactors the QR code generator application to improve its structure and user experience. The changes include organizing the code into a class, adding error handling, and enhancing the UI.

Code structure improvements:

• Refactored the application into a QRCodeGenerator class to encapsulate functionality and improve code organization. (Beginner_Projects/QR Generator/QR_code_generator_GUI.py)

UI enhancements:

• Added input validation and error messages using messagebox to improve user feedback. (Beginner_Projects/QR Generator/QR_code_generator_GUI.py)
• Introduced a method to clean up temporary files after QR code generation to ensure no leftover files. (Beginner_Projects/QR Generator/QR_code_generator_GUI.py)

Functionality improvements:

• Added a confirmation dialog to handle file overwrites when downloading QR codes. (Beginner_Projects/QR Generator/QR_code_generator_GUI.py)
• Included a method to switch between light and dark themes dynamically. (Beginner_Projects/QR Generator/QR_code_generator_GUI.py)

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Type of Change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

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How Has This Been Tested?

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Checklist

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• My code follows the guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added things that prove my fix is effective or that my feature works.
• Any dependent changes have been merged and published in downstream modules.

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[yashksaini-coder]

@UTSAVS26 can you review this PR, and add proper logic to it.