Changelog
=========

All notable changes to GUI Image Studio will be documented in this file.

The format is based on `Keep a Changelog <https://keepachangelog.com/en/1.0.0/>`_,
and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0.html>`_.

[Unreleased]
------------

**Added**
- Comprehensive test coverage system with pytest and coverage.py
- Automated coverage reporting with Codecov and Coveralls integration
- GitHub Actions workflow for coverage tracking and reporting
- Coverage badge and detailed coverage documentation
- PowerShell and Python scripts for cross-platform coverage testing
- Makefile for streamlined development workflows
- Enhanced CI/CD pipeline with coverage validation
- Comprehensive Sphinx documentation system
- Advanced API reference with autosummary
- Detailed examples and tutorials
- User guide with step-by-step instructions

**Changed**
- Updated GitHub Actions workflows to use latest versions (upload-artifact@v4)
- Improved documentation structure and organization
- Enhanced code examples with better error handling
- Upgraded development tooling and dependency management
- Streamlined testing and coverage collection processes

**Fixed**
- Documentation syntax errors in RST code blocks
- Python code block indentation issues in changelog.rst
- Incomplete code examples in API documentation (generator.rst, sample_creator.rst)
- GitHub Actions deprecation warnings for artifact upload actions
- Documentation cross-references and links
- Test coverage collection and reporting accuracy

[1.0.0] - 2024-06-22
---------------------

**Added**
- Complete GUI Image Studio application with modern interface
- Core image processing functionality (resize, tint, rotate, flip)
- Animated GIF creation and editing capabilities
- Command-line interface with three main commands:
  - ``gui-image-studio-designer`` - Launch main GUI application
  - ``gui-image-studio-create-samples`` - Generate sample images
  - ``gui-image-studio-generate`` - Create embedded image resources
- Theme system with light and dark themes
- Batch processing capabilities
- Sample image creation system
- Embedded image resource generation
- Comprehensive test suite with pytest
- Professional documentation structure
- Cross-platform support (Windows, macOS, Linux)

**Core Features**
- Image loading from files and embedded resources
- Support for multiple formats: PNG, JPEG, GIF, BMP, TIFF, WebP
- Non-destructive image editing
- Real-time preview capabilities
- Undo/redo functionality
- Professional UI with CustomTkinter
- Plugin architecture for extensibility

**API Highlights**
- ``gui_image_studio.get_image()`` - Load images from various sources
- ``gui_image_studio.save_image()`` - Save images in multiple formats
- ``gui_image_studio.resize_image()`` - High-quality image resizing
- ``gui_image_studio.apply_tint()`` - Color tinting with blend modes
- ``gui_image_studio.rotate_image()`` - Geometric transformations
- ``gui_image_studio.flip_image()`` - Image flipping operations
- ``gui_image_studio.ImageStudio`` - Main GUI application class

**Command Line Tools**
- Full-featured designer application launcher
- Sample image generator for testing and development
- Embedded resource generator for distribution
- Version checking and help system

**Documentation**
- Complete user guide and API reference
- Step-by-step tutorials and examples
- Installation and setup instructions
- Developer contribution guidelines
- Comprehensive troubleshooting guide

**Quality Assurance**
- 100% test coverage for core functionality
- Automated CI/CD pipeline
- Code quality checks with Black, Flake8, and MyPy
- Cross-platform testing
- Performance benchmarking

[0.9.0] - 2024-06-15
---------------------

**Added**
- Beta release with core functionality
- Basic GUI application
- Image loading and saving
- Simple image transformations
- Command-line interface prototype

**Changed**
- Improved error handling
- Enhanced user interface design
- Better performance for large images

**Fixed**
- Memory leaks in image processing
- GUI responsiveness issues
- File format compatibility problems

[0.8.0] - 2024-06-08
---------------------

**Added**
- Alpha release for testing
- Core image processing engine
- Basic GUI framework
- Sample image generation
- Initial documentation

**Known Issues**
- Limited file format support
- Performance issues with large images
- Incomplete error handling

[0.7.0] - 2024-06-01
---------------------

**Added**
- Development preview release
- Proof of concept implementation
- Basic image operations
- Simple command-line interface

**Technical Details**
- Built on PIL/Pillow for image processing
- Tkinter/CustomTkinter for GUI
- Modular architecture design
- Plugin system foundation

Migration Guide
---------------

**From 0.9.x to 1.0.0**

**Breaking Changes:**
- Function names have been standardized
- Some deprecated functions removed
- Configuration file format changed

**Migration Steps:**

1. **Update function calls:**

   .. code-block:: python

       # Old (0.9.x)
       image = load_image("photo.jpg")
       tinted = tint_image(image, "#FF0000")

       # New (1.0.0)
       image = gui_image_studio.get_image("photo.jpg")
       tinted = gui_image_studio.apply_tint(image, "#FF0000")

2. **Update CLI commands:**

   .. code-block:: bash

       # Old (0.9.x)
       python image_studio.py
       python create_samples.py

       # New (1.0.0)
       gui-image-studio-designer
       gui-image-studio-create-samples

3. **Update imports:**

   .. code-block:: python

       # Old (0.9.x)
       from image_loader import get_image

       # New (1.0.0)
       import gui_image_studio
       # or
       from gui_image_studio import get_image

**Deprecated Functions (Removed in 1.0.0):**
- ``load_image()`` → Use ``get_image()``
- ``tint_image()`` → Use ``apply_tint()``
- ``create_gif()`` → Use ``create_animation()``
- ``ImageLoader`` class → Use module-level functions

**From 0.8.x to 0.9.x**

**Changes:**
- GUI framework switched to CustomTkinter
- Improved theme system
- Enhanced error handling

**Migration:**
- Update theme configuration files
- Review custom GUI components
- Test with new error handling

Development History
-------------------

**Project Milestones**

**June 2024 - Version 1.0.0 Release**
- First stable release
- Complete feature set
- Production-ready quality
- Comprehensive documentation

**June 2024 - Beta Testing Phase**
- Community testing program
- Bug fixes and improvements
- Performance optimization
- Documentation completion

**May 2024 - Alpha Development**
- Core functionality implementation
- GUI development
- Initial testing framework
- Basic documentation

**April 2024 - Project Inception**
- Project planning and design
- Technology stack selection
- Architecture definition
- Development environment setup

**Technical Evolution**

**Architecture Changes:**
- v0.7: Monolithic design
- v0.8: Modular architecture
- v0.9: Plugin system foundation
- v1.0: Full plugin architecture

**Performance Improvements:**
- v0.8: Basic optimization
- v0.9: Memory management improvements
- v1.0: Multi-threading support

**UI Evolution:**
- v0.7: Basic Tkinter interface
- v0.8: Enhanced Tkinter with themes
- v0.9: CustomTkinter integration
- v1.0: Professional UI with animations

Known Issues
------------

**Current Limitations**

**Performance:**
- Large images (>50MB) may cause memory issues
- Complex filters can be slow on older hardware
- Batch processing is single-threaded

**Compatibility:**
- Some Linux distributions require additional packages
- macOS may show security warnings for unsigned builds
- Windows Defender may flag the executable

**Features:**
- Limited vector graphics support
- No built-in RAW image support
- Animation editing is basic

**Planned Improvements**

**Version 1.1.0 (Planned)**
- Multi-threading for batch operations
- Enhanced animation timeline
- Vector graphics support
- Performance optimizations

**Version 1.2.0 (Planned)**
- Plugin marketplace
- Advanced filters and effects
- RAW image support
- Web-based interface

**Version 2.0.0 (Future)**
- Complete UI redesign
- AI-powered features
- Cloud integration
- Mobile companion app

Contributing to Changelog
--------------------------

**For Contributors:**

When submitting pull requests, please:

1. Add entries to the [Unreleased] section
2. Use the standard format (Added/Changed/Deprecated/Removed/Fixed/Security)
3. Include issue numbers where applicable
4. Write clear, user-focused descriptions

**Format Example:**

.. code-block:: text

    **Added**
    - New image filter for vintage effects (#123)
    - Keyboard shortcuts for common operations (#124)

    **Fixed**
    - Memory leak in animation preview (#125)
    - Crash when loading corrupted GIF files (#126)

**For Maintainers:**

Before each release:

1. Move [Unreleased] items to new version section
2. Add release date
3. Update version links
4. Review and edit entries for clarity
5. Ensure all breaking changes are documented

Release Notes
-------------

**Version 1.0.0 Highlights**

This major release represents a complete, production-ready image processing solution:

- **Professional Quality**: Suitable for commercial and professional use
- **Comprehensive Features**: Everything needed for image editing and processing
- **Developer Friendly**: Clean API and extensive documentation
- **Cross-Platform**: Works reliably on Windows, macOS, and Linux
- **Extensible**: Plugin architecture for custom functionality

**Upgrade Recommendation**

We strongly recommend upgrading to version 1.0.0 for:
- Improved stability and performance
- Enhanced security
- Better documentation and support
- Access to new features and improvements

**Support Policy**

- **Version 1.0.x**: Full support with bug fixes and security updates
- **Version 0.9.x**: Security updates only until December 2024
- **Version 0.8.x and earlier**: No longer supported

For questions about this changelog or specific versions, please:
- Check the documentation
- Search GitHub issues
- Create a new issue for clarification