Lumacs/DEV_STATE.md

DEV_STATE.md - Lumacs Development State

Architecture

    [Lua 5.4 Engine]
         ^  |
         |  v
    [Lua API Bridge] <-- C++ bindings for buffers, windows, keybindings, themes
         ^  |
         |  v
    [Editor Core] <-- Buffer management, kill ring, face system
         ^  |
         |  v
    [UI Interface] <-- Abstract UI layer
         ^  |
         |  v
    [GTK4 Frontend] <-- Primary GUI (with TUI fallback available)
         |
         v
    [Terminal/Display]

Current Module

GTK4 Frontend Completion - Currently in Phase 6 with stable basic functionality. The editor has working text input, cursor movement, basic editing operations, and clean shutdown.

File Manifest

Lumacs/
├── CMakeLists.txt           # Build configuration
├── init.lua                 # Main Lua initialization
├── themes.lua              # Theme definitions
├── include/lumacs/         # C++ headers
│   ├── editor_core.hpp     # Core editor logic
│   ├── buffer.hpp          # Text buffer management
│   ├── lua_api.hpp         # C++/Lua bridge
│   ├── gtk_editor.hpp      # GTK4 frontend
│   ├── tui_editor.hpp      # TUI fallback
│   ├── keybinding.hpp      # Key handling
│   ├── theme.hpp           # Theme/face system
│   └── [other headers]
├── src/                    # C++ implementation
│   ├── main.cpp            # Entry point
│   ├── editor_core.cpp     # Core functionality
│   ├── lua_api.cpp         # Lua bindings
│   ├── gtk_editor.cpp      # GTK implementation
│   └── [other .cpp files]
├── tests/                  # Unit tests
├── examples/               # Test files and demos
├── scripts/                # Build/test scripts
└── documentation/          # Project docs

Done

• ✅ Phase 1-5: Complete Emacs-like core functionality
• ✅ Phase 6 Core: GTK4 frontend with text rendering
• ✅ Input System: Full keyboard input with modifiers working
• ✅ Cursor System: Fixed cursor positioning and text alignment
• ✅ Text Editing: Basic insertion, deletion, movement operations working
• ✅ Keybinding System: Fixed conflicts, C-n, C-p, C-f, C-b, C-a, C-e, C-s, C-k working
• ✅ Clean Exit: Fixed shutdown crashes and memory issues
• ✅ Syntax Highlighting: Face system with Pango rendering
• ✅ Text-Cursor Alignment: Fixed text rendering offset issues

Todo

1. Scrolling Implementation: Add proper text scrolling to GTK frontend
2. Window Splits: Implement window splitting using GTK containers
3. Exit Crash Cleanup: Address any remaining exit-related issues
4. Phase 7: Performance optimization and tuning
5. Phase 8: Mouse support and advanced UI features

Technical Debt/Notes

• Lua Bridge: The lua_api.cpp contains the critical C++/Lua boundary code
• GTK Threading: All GTK operations must stay on main thread
• Memory Management: Using RAII and smart pointers throughout C++ code
• Face System: Themes are fully integrated with Pango text rendering
• Build System: CMake-based with proper dependency management
• Testing: Unit test framework in place for core components

Current Focus

Phase 6 GTK4 Frontend - Near Completion: Major rendering and input issues resolved. Next priorities are scrolling implementation and window management for full Phase 6 completion.