noctua/README.md
wfx fc73e4b76b Complete Clean Architecture migration
Phase 1-7: Full migration from src/app/ to Clean Architecture

BREAKING CHANGES:
- Removed src/app/ (old TEA-style implementation)
- Removed src/constant.rs (constants now local to modules)
- Removed deprecated canvas_to_image_coords functions

NEW STRUCTURE:
- src/ui/           - UI Layer (COSMIC interface)
- src/application/  - Application Layer (DocumentManager, Commands)
- src/domain/       - Domain Layer (Document types, Operations)
- src/infrastructure/ - Infrastructure Layer (Loaders, Cache, System)

FEATURES:
- DocumentManager as Single Source of Truth
- Command Pattern for all operations
- Model caching for render data (performance)
- Sync mechanism between DocumentManager and UI Model
- Wallpaper support (COSMIC, KDE, GNOME, feh)
- Thumbnail cache with disk persistence

IMPROVEMENTS:
- Warnings: 62 → 43 (-31%)
- Deprecated warnings: 2 → 0 (-100%)
- Code removed: src/app/ (~2000 lines), constant.rs, deprecated functions
- Better Locality of Reference (constants local to modules)
- Clean separation of concerns
- No circular dependencies

DOCUMENTATION:
- Updated AGENTS.md (100% migration status)
- Updated README.md (architecture section)
- Updated Workflow.md
- Added Migration-Plan.md with full completion summary

TESTS:
- All 41 tests passing
- Build successful (0 errors, 43 warnings)
- Release build verified

Migration Status:  100% Complete
2026-02-03 08:43:21 +01:00

95 lines
3.3 KiB
Markdown

# Noctua
An image viewer application for the COSMIC™ desktop
![Screenshot](docs/images/screenshot.png)
## Features
- **Multi-format support**: Raster images (PNG, JPEG, WebP, etc.), SVG vector graphics, and PDF documents
- **Navigation**: Browse through folders with keyboard shortcuts
- **Transformations**: Rotate, flip, and crop images
- **Zoom & Pan**: Flexible viewing with zoom controls and panning
- **Multi-page documents**: Navigate PDF pages with thumbnail previews
- **Metadata display**: View EXIF data and file information
- **Wallpaper setting**: Set images as desktop wallpaper (multi-DE support)
## Architecture
Noctua follows Clean Architecture principles with clear separation of concerns:
```
src/
├── main.rs # Application entry point
├── ui/ # UI Layer (COSMIC interface)
│ ├── app.rs # Application state & lifecycle
│ ├── model.rs # UI state + cached render data
│ ├── update.rs # Message handlers
│ ├── sync.rs # Model synchronization
│ ├── views/ # View components
│ └── components/ # Reusable widgets
├── application/ # Application Layer (use cases)
│ ├── document_manager.rs # Document orchestration
│ ├── commands/ # Write operations (Transform, Crop)
│ └── services/ # Shared services (Cache)
├── domain/ # Domain Layer (business logic)
│ ├── document/ # Document abstractions & operations
│ │ ├── core/ # Traits & types (Renderable, Transformable)
│ │ ├── types/ # Implementations (Raster, Vector, Portable)
│ │ └── operations/ # Transform, render, export operations
│ └── errors.rs # Domain errors
└── infrastructure/ # Infrastructure Layer (external systems)
├── loaders/ # Document loading (image, SVG, PDF)
├── cache/ # Thumbnail caching
├── filesystem/ # File operations
└── system/ # System integration (wallpaper)
```
**Key Patterns:**
- **MVU (Model-View-Update)**: Elm architecture via libcosmic
- **Command Pattern**: All operations go through commands
- **Dependency Inversion**: Domain has no dependencies on infrastructure
- **Type-Erased Documents**: `DocumentContent` enum for unified handling
## Installation
A [justfile](./justfile) is included by default for the [casey/just][just] command runner.
- `just` builds the application with the default `just build-release` recipe
- `just run` builds and runs the application
- `just install` installs the project into the system
- `just vendor` creates a vendored tarball
- `just build-vendored` compiles with vendored dependencies from that tarball
- `just check` runs clippy on the project to check for linter warnings
- `just check-json` can be used by IDEs that support LSP
### Dependencies
#### Arch Linux
```bash
sudo pacman -S poppler-glib
```
#### Debian/Ubuntu
```bash
sudo apt install libpoppler-glib-dev
```
#### Fedora
```bash
sudo dnf install poppler-glib-devel
```
#### OpenSUSE
```bash
sudo zypper install poppler-glib-devel
```
## Documentation
- [Usage](docs/usage.md)
- [Features](docs/features.md)
- [Development Guide](docs/development.md)
## License
GPL-3.0-or-later