ddd3950e49
New module: src/rendering/framebuffer.lisp (tangled from org/framebuffer.org) - framebuffer-backend class: implements backend protocol by writing to 2D cell array instead of emitting escape sequences - cell struct: per-cell state (char, fg, bg, bold, italic, underline, link-url) - make-framebuffer / framebuffer-width / framebuffer-height - draw-text, draw-rect, draw-border, draw-link, draw-ellipsis methods - diff-framebuffers: compares two framebuffers, returns changed cells - flush-framebuffer: diff + output changes to real backend - with-scissor macro: clip drawing operations to rectangle - cursor-move: added default no-op method for all backends - 20 new tests, all passing (372 total) Version bumped from 0.11.0 to 0.13.0. License field set to GPL-3.0 in ASDF.
Pure CL terminal UI framework. No ncurses, no FFI, no external dependencies.
```lisp (ql:quickload :cl-tty) ```
## Quick start
```lisp ;; Create a modern terminal backend (let ((backend (make-instance 'cl-tty.backend:modern-backend))) (cl-tty.backend:initialize-backend backend) ;; Backend is ready — write text, draw boxes, handle input (cl-tty.backend:shutdown-backend backend)) ```
## Architecture
Two backends, one protocol:
- modern-backend — truecolor 24-bit, OSC 8 hyperlinks, DECICM sync, SGR mouse, kitty keyboard, bold/italic/underline, box-drawing chars
- simple-backend — ASCII art, no color, universal compatibility
Everything is pure escape sequences (no curses, no terminfo, no FFI).
## Components
| Component | What it does | Version |
|---|---|---|
| Box | Bordered container with background, title | v0.2.0 |
| Text | Styled text with word-wrap, spans | v0.2.0 |
| ScrollBox | Scrollable viewport with scrollbars | v0.6.0 |
| TabBar | Horizontal tab navigation | v0.6.0 |
| Select | Dropdown with fuzzy filter, category headers | v0.7.0 |
| TextInput | Single-line text input with readline keybindings | v0.5.0 |
| TextArea | Multi-line input with undo/redo, selection | v0.5.0 |
| Markdown | Renders markdown with syntax highlighting + diffs | v0.8.0 |
| Dialog | Modal overlays with stack management | v0.9.0 |
| Toast | Transient notifications (info/success/warning/error) | v0.9.0 |
| Mouse | Event handlers, hit-testing, text selection | v0.10.0 |
| Slot | Plugin system — named slots for extensible UI | v0.11.0 |
## Backend features
| Feature | modern | simple |
|---|---|---|
| Truecolor (24-bit) | Yes | No |
| Bold/italic | Yes | No |
| OSC 8 hyperlinks | Yes | No |
| DECICM sync | Yes | No |
| SGR mouse | Yes | No |
| Kitty keyboard | Yes | No |
| Box drawing chars | Unicode | ASCII |
| Pipe-safe | No | Yes |
## Development
```bash
sbcl –script run-all-tests.lisp
emacs –batch –eval "(progn (require 'org) (find-file \"org/FILE.org\") (org-babel-tangle) (kill-buffer))" ```
Literate programming: `.org` files in `org/` are the source of truth. `.lisp` files are generated by tangling.
## License
GNU General Public License v3.0