To-Do List Application

A sleek and modern To-Do List application built with Python and the Flet library. This app allows users to create, track, and delete tasks, with an additional feature to toggle between Dark and Light themes.

Features

• Custom Title Bar: Instead of the standard OS-provided title bar, the application has a custom-made title bar that matches the overall design of the app. It includes a close button, minimize button, and a theme switch. The custom title bar can be dragged with the mouse to move the window around the screen.
• Dark and Light Themes: The app supports both Dark and Light themes, allowing the user to choose the appearance they prefer.
• Task Management: Users can add, complete, and delete tasks with ease. Completed tasks appear faded to differentiate them from active tasks.
• Persistent Storage: The app saves tasks in a JSON file, so all tasks are retained even after closing and reopening the app.

Screenshots

Light Theme

Dark Theme

Technologies Used

• Python: The main programming language for building the logic of the application.
• Flet Library: A Python library for building user interfaces that run in both desktop and web environments. It simplifies GUI development and provides cross-platform compatibility.
• JSON: Used for data storage, allowing tasks to be saved in a structured format, making it easy to retrieve and update task data.

Key Components

1. Custom Title Bar: The standard OS title bar is replaced with a custom one that includes a draggable area, close and minimize buttons, and a theme toggle switch. This gives the app a unique look and a consistent theme.

2. Task List Management: Each task is represented as an item in a list with a checkbox for completion status, a delete button that appears on hover, and due date text. When tasks are marked as complete, they fade and the text color changes.

3. Theme Switching: The toggle_theme function allows seamless switching between Dark and Light themes, updating the background, text colors, and other UI elements to provide a cohesive look.

Algorithms and Functionalities

• Task Storage Algorithm: Tasks are stored in a JSON file. When the app starts, tasks are loaded from the file, and each time a task is added, deleted, or completed, the file is updated. This ensures that all tasks persist even if the app is closed.

• Color Switching Mechanism: The app uses dictionaries to define color palettes for Dark and Light themes. The toggle_theme function updates the UI colors by changing the palette based on the theme switch's state.

Advantages

• Cross-Platform Compatibility: Built with the Flet library, the app can run on multiple platforms (Windows, macOS, Linux) and even as a web application.
• Modern and Customizable UI: The custom title bar provides a more personalized user experience, and theme switching offers flexibility in appearance.
• Persistent Task Data: Tasks are saved locally in a JSON file, ensuring that users won’t lose their data between sessions.

Possible Improvements

• Due Date Reminders: Implement a reminder feature that notifies users of upcoming due dates.
• Drag and Drop Sorting: Allow users to reorder tasks by dragging and dropping them in the desired order.
• Task Categories: Add the ability to create categories or tags for better organization.
• Synchronization: Integrate cloud-based synchronization to access tasks from multiple devices.
• Customizable Themes: Allow users to create and save custom themes for a more personalized experience.

How to Run the Application

1. Clone this repository:

   git clone https://github.com/your-username/todo-app.git

2. Navigate to the project directory:

   cd todo-app

3. Install the required dependencies:

   pip install flet

4. Run the application:

python main.py

Conclusion

This To-Do List application combines functionality and aesthetics, providing an efficient tool for task management with a clean, modern interface. By using Flet and Python, it demonstrates the power of building desktop applications in a simple yet customizable way.