v0.15.0: Critical input/rendering fixes, subagent-reviewed #7

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amr merged 36 commits from feature/v0.11.0-slots into main 2026-05-11 22:03:18 -04:00
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#+TITLE: cl-tty — Reusable Common Lisp Terminal UI Framework
#+STARTUP: content
#+FILETAGS: :project:cl-tty:readme:
# cl-tty — Terminal UI Framework for Common Lisp
* cl-tty
Pure CL terminal UI framework. No ncurses, no FFI, no external dependencies.
A reusable Common Lisp framework for building rich terminal user interfaces.
Built on croatoan (ncurses) with Yoga for Flexbox layout. Provides a component
tree model with dirty-tracking, incremental rendering, layered keybinding,
theme engine, and full mouse support — the primitives needed to match the TUI
quality of Claude Code and OpenCode from Common Lisp.
** Why
Common Lisp has no reusable terminal UI framework at the level of Python's
Rich/prompt_toolkit or Go's Bubble Tea. Every CL project that wants a
terminal UI either builds ncurses from scratch or uses a text-only REPL.
cl-tty fills that gap — a component library with Flexbox layout, semantic
theming, layered keybinding, and full mouse support. Build a terminal UI once,
reuse it everywhere.
Terminal UIs also work over SSH. A Qt or browser-based UI requires a local
display. A cl-tty application runs remotely — same code, same components,
accessible from anywhere.
** Architecture
```
Application code (any CL project)
└── cl-tty (layout, components, theme, events, dialogs)
└── Yoga (Flexbox layout — C library via FFI)
└── croatoan (ncurses terminal rendering)
```lisp
(ql:quickload :cl-tty)
```
cl-tty depends only on croatoan and Yoga. It is not tied to any application.
## Quick start
** Dependencies
```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))
```
- Common Lisp (SBCL tested)
- croatoan — ncurses binding for terminal rendering
- Yoga — Flexbox layout engine (C library, loaded via CFFI)
- Quicklisp libraries as needed (ironclad for hashing, bordeaux-threads)
## Architecture
** Status
Two backends, one protocol:
v0.1.0 — Layout engine (in progress)
- **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
See ~docs/ROADMAP.org~ for the full release plan.
Everything is pure escape sequences (no curses, no terminfo, no FFI).
** License
## 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
# Run all tests
sbcl --script run-all-tests.lisp
# Tangle org files
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
TBD
# Test

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demo.lisp
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;; demo.lisp — minimal cl-tty demo
(load "/root/quicklisp/setup.lisp")
(ql:quickload :fiveam :silent t)
(load "backend/package.lisp")
(load "backend/classes.lisp")
(load "backend/simple.lisp")
(load "backend/modern.lisp")
(load "layout/layout.lisp")
(load "src/components/package.lisp")
(load "src/components/dirty.lisp")
(load "src/components/box.lisp")
(load "src/components/text.lisp")
(load "src/components/render.lisp")
(in-package :cl-tty.box)
;;; demo.lisp — cl-tty demo application
;;; Run: sbcl --script demo.lisp
;; Demo 1: Simple backend (ASCII)
(let* ((b (make-simple-backend))
(bx (make-box :border-style :rounded :title " Hello World " :width 30 :height 5)))
(compute-layout (box-layout-node bx) 30 5)
(render bx b))
(load "~/quicklisp/setup.lisp")
(ql:register-local-projects)
(ql:quickload :cl-tty :silent t)
;; Demo 2: Box with text inside
(let* ((b (make-simple-backend))
(tx (make-text "This is cl-tty in action!" :width 28 :height 1)))
(setf (layout-node-direction (text-layout-node tx)) :column)
(compute-layout (text-layout-node tx) 28 1)
(render tx b)
(format t "~%~%"))
(in-package :cl-tty)
;; ─── Helper: write a string at (x, y) with optional styling ────────────────
(defun write-at (backend x y string &key fg bg bold)
(let ((styled (if bold (format nil "~c[1m~a~c[0m" #\Esc string #\Esc) string)))
(backend-write backend x y styled fg bg)))
;; ─── Demo ───────────────────────────────────────────────────────────────────
(defun run-demo ()
(let* ((backend (make-instance 'cl-tty.backend:modern-backend))
(w 80) (h 24))
;; Initialize
(initialize-backend backend)
(clear-screen backend)
(backend-write backend 0 0 (format nil "~c[?25l" #\Esc)) ; hide cursor
;; Title box
(draw-border backend 1 1 78 3 :double :title " cl-tty Demo ")
(write-at backend 3 2 "A pure-CL terminal UI framework. No ncurses, no FFI."
:bold t)
;; Feature grid
(draw-border backend 1 5 78 12 :single :title " Components ")
(let ((items '((" Box Bordered containers with title and background"
" Text Styled text with word-wrap and spans")
(" ScrollBox Scrollable viewport with scrollbars"
" TabBar Horizontal tab navigation")
(" Select Dropdown with fuzzy filter"
" TextInput / TextArea Single/multi-line input with undo")
(" Markdown Renders markdown with syntax highlighting"
" Dialog / Toast Modal overlays and notifications")
(" Mouse Event handlers and text selection"
" Slot System Named slots for extensible UI"))))
(loop for i from 0 below 5
for (col1 col2) = (nth i items)
do (write-at backend 3 (+ 7 i) col1)
(write-at backend 42 (+ 7 i) col2)))
;; Backend features table
(draw-border backend 1 18 78 5 :single :title " Backend Support ")
(write-at backend 3 20 "Feature" :bold t)
(write-at backend 25 20 "modern" :bold t)
(write-at backend 40 20 "simple" :bold t)
(write-at backend 3 21 "Truecolor (24-bit)")
(write-at backend 25 21 "yes")
(write-at backend 40 21 "no")
(write-at backend 3 22 "OSC 8 hyperlinks")
(write-at backend 25 22 "yes")
(write-at backend 40 22 "no")
;; Footer
(write-at backend 1 24 " Press q to quit " :bold t :fg :white :bg :blue)
(backend-write backend 0 0 (format nil "~c[?25h" #\Esc)) ; show cursor
;; Wait for q
(loop
(let ((ch (read-raw-byte :timeout 1)))
(when ch
(when (or (char= (code-char ch) #\q)
(= ch 3)) ; Ctrl+C
(return)))))
;; Cleanup
(clear-screen backend)
(shutdown-backend backend)))
;; ─── Run ────────────────────────────────────────────────────────────────────
(when (probe-file "/dev/tty")
(run-demo))

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All 11 phases integrated and tested. Applications can build rich terminal UIs
from the component library without writing custom ncurses code.
** DONE Documentation
- README.org with overview, architecture, component table, quick start
- demo.lisp — working example exercising multiple components
- run-all-tests.lisp — single-script test runner
- Full test suite: ~280 checks, 100% passing across all 9 suites
* Neurosymbolic Phase Reference
| Phase | Component | Lines | Release |

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run-all-tests.lisp Normal file
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(load "~/quicklisp/setup.lisp")
(ql:register-local-projects)
(ql:quickload :cl-tty :silent t)
;; Load all test files
(dolist (f '("backend/tests.lisp" "backend/modern-tests.lisp"
"layout/tests.lisp"
"src/components/box-tests.lisp"
"src/components/dirty-tests.lisp"
"src/components/render-tests.lisp"
"src/components/theme-tests.lisp"
"src/components/input-tests.lisp"
"tests/scrollbox-tabbar-tests.lisp"
"tests/select-tests.lisp"
"tests/markdown-tests.lisp"
"tests/dialog-tests.lisp"
"tests/mouse-tests.lisp"
"tests/slot-tests.lisp"))
(load f))
;; Run all test suites
(dolist (suite '((:cl-tty-backend-test "BACKEND-SUITE")
(:cl-tty-box-test "BOX-SUITE")
(:cl-tty-input-test "INPUT-SUITE")
(:cl-tty-scrollbox-test "SCROLLBOX-SUITE")
(:cl-tty-select-test "SELECT-SUITE")
(:cl-tty-markdown-test :cl-tty-markdown-test)
(:cl-tty-dialog-test "DIALOG-SUITE")
(:cl-tty-mouse-test "MOUSE-SUITE")
(:cl-tty-slot-test "SLOT-SUITE")))
(let* ((pkg (find-package (first suite)))
(suite-name (second suite))
(s (etypecase suite-name
(keyword (find-symbol (string suite-name) pkg))
(string (find-symbol suite-name pkg)))))
(format t "~&=== ~a ===~%" (first suite))
(if s
(fiveam:explain! (fiveam:run s))
(format t "Suite not found~%"))))
(uiop:quit 0)