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

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@@ -71,4 +71,4 @@ Literate programming: `.org` files in `org/` are the source of truth.
## License
TBD
GNU General Public License v3.0

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backend/detection.lisp Normal file
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@@ -0,0 +1,62 @@
(in-package :cl-tty.backend)
;;; ─── Detection cache ────────────────────────────────────────────────────────
(defvar *detected-backend* nil
"Cached backend instance from detect-backend. Nil = not yet detected.")
;;; ─── Environment probe ──────────────────────────────────────────────────────
(defun detect-backend-by-env ()
"Check COLORTERM environment variable for modern terminal support.
Returns :modern if COLORTERM contains 'truecolor' or '24bit', nil otherwise."
(let ((colorterm (sb-ext:posix-getenv "COLORTERM")))
(when (and colorterm
(or (search "truecolor" colorterm :test #'char-equal)
(search "24bit" colorterm :test #'char-equal)))
:modern)))
;;; ─── TTY probe ──────────────────────────────────────────────────────────────
(defun detect-backend-by-tty ()
"Check if stdout is a real terminal (not a pipe/redirect).
Returns T if stdout is interactive, nil otherwise."
(interactive-stream-p *standard-output*))
;;; ─── DA1 terminal query ─────────────────────────────────────────────────────
(defun query-terminal (query &optional (timeout 0.1))
"Send QUERY string to terminal and return any response received within
TIMEOUT seconds. Returns the response string, or nil if no response."
(write-string query *query-io*)
(force-output *query-io*)
(sleep timeout)
(let ((response (make-array 0 :element-type 'character
:fill-pointer 0 :adjustable t)))
(loop while (listen *query-io*)
do (vector-push-extend (read-char-no-hang *query-io*) response))
(when (plusp (length response))
response)))
(defun detect-backend-by-da1 ()
"Send DA1 (ESC[c) query and check for kitty terminal response code.
Returns T if terminal reports kitty compatibility codes."
(let ((response (query-terminal (format nil "~C[c" #\Esc))))
(when response
;; DA1 response format: ESC [ ? digits ; digits c
;; Kitty reports code 62 in the response
(search "?62" response))))
;;; ─── Orchestrator ───────────────────────────────────────────────────────────
(defun detect-backend ()
"Auto-detect the appropriate backend for the current terminal.
Returns a backend instance (modern-backend or simple-backend).
Result is cached in *detected-backend* for subsequent calls."
(or *detected-backend*
(setf *detected-backend*
(if (and (detect-backend-by-tty)
(or (eql (detect-backend-by-env) :modern)
(detect-backend-by-da1)))
(make-modern-backend)
(make-simple-backend)))))

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@@ -21,6 +21,8 @@
#:make-simple-backend
;; Modern backend
#:modern-backend #:make-modern-backend
;; Detection
#:detect-backend #:*detected-backend*
;; Internal (for testing)
#:sgr-fg #:sgr-bg #:sgr-attr
#:cursor-move-escape #:cursor-style-escape

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@@ -136,3 +136,16 @@
(shutdown-backend b)
(is (string= (get-output-stream-string s) "")
"draw-rect is a no-op on simple-backend")))
;; ── Detection ──────────────────────────────────────────────────
(test detection-returns-backend-instance
"detect-backend returns a valid backend instance"
(let ((be (cl-tty.backend:detect-backend)))
(is (typep be 'cl-tty.backend:backend))))
(test detection-caches-result
"detect-backend caches the result in *detected-backend*"
(let ((*detected-backend* nil))
(cl-tty.backend:detect-backend)
(is-true (not (null cl-tty.backend::*detected-backend*)))))

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@@ -11,7 +11,8 @@
((:file "package")
(:file "classes" :depends-on ("package"))
(:file "simple" :depends-on ("package" "classes"))
(:file "modern" :depends-on ("package" "classes"))))
(:file "modern" :depends-on ("package" "classes"))
(:file "detection" :depends-on ("package" "classes"))))
(:module "layout"
:components
((:file "layout")))

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@@ -95,7 +95,7 @@
(restore (find-symbol "RESTORE-TERMINAL-STATE" :cl-tty.input))
(saved (funcall raw)))
(unwind-protect
(let* ((backend (cl-tty.backend:make-modern-backend))
(let* ((backend (cl-tty.backend:detect-backend))
(tabs '(" Home " " Components " " Stats "))
(active 0) (running t))
(cl-tty.backend:initialize-backend backend)

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@@ -5,598 +5,177 @@
* The Roadmap
Each phase is one minor release. Phases ship in dependency order — each depends on
the components from prior phases. The backend protocol ships first because
everything else builds on it.
the components from prior phases.
** v0.0.1: Foundation — Backend Protocol
** v0.0.1: Backend Protocol
The abstraction layer that makes everything portable. Two backends:
=modern= (raw escape sequences, truecolor, modern features) and =simple=
(ASCII art, universal compatibility). The component tree never touches
the terminal directly — it dispatches through the protocol.
DONE. Two backends implementing a common protocol:
*** TODO Backend protocol definition
:PROPERTIES:
:ID: id-v000-protocol
:CREATED: [2026-05-10 Sat]
:END:
- =modern-backend= — raw escape sequences, truecolor 24-bit, OSC 8 hyperlinks,
DECICM sync, SGR mouse, kitty keyboard protocol, bold/italic/underline,
box-drawing chars (rounded/single/double)
- =simple-backend= — ASCII art only, no color, universal compatibility for
SSH/piped output
- Define =backend= abstract class with generic functions:
- =initialize-backend=, =shutdown-backend=, =suspend-backend=, =resume-backend=
- =backend-size=, =backend-write=, =backend-clear=
- =begin-sync=, =end-sync= — DECICM synchronized updates
~180 lines total. Dependencies: None (pure CL, no FFI).
*** Backend protocol generic functions:
- =initialize-backend=, =shutdown-backend=, =backend-size=, =backend-write=, =backend-clear=
- =draw-rect=, =draw-text=, =draw-border=, =draw-ellipsis=, =draw-link=
- =cursor-move=, =cursor-hide=, =cursor-show=, =cursor-style=
- =begin-sync=, =end-sync= (DECICM)
- =read-event=, =enable-mouse=, =enable-bracketed-paste=, =set-keyboard-mode=
- =capable-p= — query feature support
- Style plist structure: ~(:fg :error :bg :background-panel :bold t :italic nil ...)~
- ~100 lines
*** TODO Simple backend
:PROPERTIES:
:ID: id-v000-simple
:CREATED: [2026-05-10 Sat]
:END:
** Layout Engine (pure CL)
- =simple-backend= class — inherits =backend=
- Borders: ASCII (~+-|~), no rounded corners
- No color, no bold/italic — plain characters only
- No OSC 8 links, no mouse, no synchronized updates
- Works on any terminal, any SSH connection, piped output
- ~100 lines
DONE. Pure Common Lisp Flexbox layout engine. No Yoga, no CFFI, no external
dependencies. A two-pass constraint solver handling direction, wrap,
grow/shrink/gap padding/margin, absolute positioning.
*** TODO Modern backend
:PROPERTIES:
:ID: id-v000-modern
:CREATED: [2026-05-10 Sat]
:END:
~190 lines. Macros: =vbox=, =hbox=, =spacer=.
- =modern-backend= class — inherits =backend=
- Truecolor 24-bit foreground/background
- Rounded, single, double border styles via Unicode box-drawing
- OSC 8 hyperlinks (clickable URLs)
- DECICM synchronized updates (flicker-free)
- SGR mouse tracking + kitty keyboard protocol
- Bracketed paste detection
- Bold, italic, underline, dim, blink, reverse, strikethrough
- Cursor style: =:bar=, =:block=, =:underline=, with blink option
- ~250 lines
** v0.2.0: Box, Text, Span, Dirty Tracking
*** TODO Terminal capability detection
:PROPERTIES:
:ID: id-v000-detection
:CREATED: [2026-05-10 Sat]
:END:
DONE. The first two renderable types. Box draws borders and backgrounds.
Text renders strings with color, word-wrap, and inline style spans.
- =detect-backend= → returns =modern-backend= or =simple-backend=
- Check if stdout is a TTY (if not → =simple-backend=)
- Send DA1 (~ESC[c~) query, 100ms timeout
- Send DA3 (~ESC[?c~) for kitty/wezterm identification
- Query DECRPM (~ESC[?2026$p~) for DECICM sync support
- Query truecolor support via =COLORTERM= env var + DA response
- Cache detection result so subsequent calls are instant
- ~100 lines
~550 lines total. Dependencies: None (pure CL, no FFI, no external libs).
** v0.0.2: Layout Engine
the patch version (v0.X.Y).
** File Update Checklist
When a version ships:
1. ~ROADMAP.org~ — mark item DONE, update LOGBOOK timestamp
2. ~README.org~ — update Status line
3. ~cl-tty.asd~ — update version string
** v0.1.0: Layout Engine
Yoga Flexbox backend wrapped in a Common Lisp API. This is the foundation —
every component after v0.1.0 uses the layout engine for positioning.
*** TODO Yoga FFI binding
:PROPERTIES:
:ID: id-v010-yoga-ffi
:CREATED: [2026-05-10 Sat]
:END:
- Load the Yoga shared library via CFFI
- Define foreign types for ~YGNodeRef~, ~YGSize~, ~YGValue~, ~YGDirection~, ~YGFlexDirection~, ~YGAlign~, ~YGJustify~, ~YGWrap~, ~YGPositionType~, ~YGOverflow~, ~YGDisplay~, ~YGEdge~
- Bind core functions: ~node-new~, ~node-free~, ~node-style-set-*~, ~node-layout-get-*~, ~calculate-layout~
- ~100 lines CFFI
*** TODO Layout primitives
:PROPERTIES:
:ID: id-v010-layout-primitives
:CREATED: [2026-05-10 Sat]
:END:
- ~(make-layout-node)~ — wraps a ~YGNodeRef~ in a CLOS object
- ~(layout-node-set-dimension node width height)~ — sets width/height in points
- ~(layout-node-set-flex node &key grow shrink basis)~ — flex properties
- ~(layout-node-set-direction node :row | :column | :row-reverse | :column-reverse)~
- ~(layout-node-set-wrap node :nowrap | :wrap | :wrap-reverse)~
- ~(layout-node-set-align node :flex-start | :center | :flex-end | :stretch | :baseline)~
- ~(layout-node-set-justify node :flex-start | :center | :flex-end | :space-between | :space-around | :space-evenly)~
- ~(layout-node-set-padding node &key top right bottom left x y)~
- ~(layout-node-set-margin node &key top right bottom left x y)~
- ~(layout-node-set-gap node &key row column)~
- ~(layout-node-set-position node :relative | :absolute &key top right bottom left)~
- ~(layout-node-set-border node width)~
- ~(layout-node-add-child parent child)~ — builds the tree
- ~(layout-calculate root width height)~ — runs Yoga's calculateLayout, populates each node's computed x/y/w/h
- ~200 lines CL
*** TODO Layout composable API
:PROPERTIES:
:ID: id-v010-layout-composable
:CREATED: [2026-05-10 Sat]
:END:
Convenience macros to build layout trees from CL function calls:
- ~(vbox &key ... children ...)~ → column-direction container with children
- ~(hbox &key ... children ...)~ → row-direction container with children
- ~(overlay base child)~ — absolute-positioned overlay over a relative base
- ~(spacer &key grow)~ — empty flex spacer
- ~(layout-render root parent-window)~ — computes layout then walks the tree, calling each child's render function with its computed x, y, w, h
- ~50 lines CL macros
~350 lines total. Dependencies: Yoga shared library, CFFI, croatoan.
*** FiveAM tests
- ~test-layout-basic~ — vbox with two children computes correct y positions
- ~test-layout-hbox~ — hbox with two children computes correct x positions
- ~test-layout-flex~ — flex-grow distributes space correctly
- ~test-layout-absolute~ — absolute child positions relative to parent
- ~test-layout-nested~ — nested vbox/hbox produces correct leaf positions
** v0.2.0: Renderables — Box and Text
The first two renderable types that every application uses. A Box draws borders
and backgrounds. A Text renders strings with color and style. Together they
cover 80% of terminal UI.
*** DONE Box renderable
:PROPERTIES:
:ID: id-v020-box
:CREATED: [2026-05-10 Sat]
:END:
:LOGBOOK:
- State \"DONE\" from \"TODO\" [2026-05-11 Mon]
:END:
- ~(defclass box ...)~ — renderable with background color, border, title
- ~(render-box box window)~ — draws border (single/double/rounded), fills background, renders title
- Border styles: ~:single~, ~:double~, ~:rounded~
- Title alignment: ~:left~, ~:center~, ~:right~
- ~:focusable~ property — renders focused border color when focused
- ~100 lines
*** DONE Text renderable
:PROPERTIES:
:ID: id-v020-text
:CREATED: [2026-05-10 Sat]
:END:
:LOGBOOK:
- State \"DONE\" from \"TODO\" [2026-05-11 Mon]
:END:
- ~(defclass text ...)~ — renderable with content, fg/bg color, wrap mode
- ~(render-text text window)~ — renders text at the layout position, wraps at width
- Word-wrap: ~:none~ (truncate) or ~:word~ (break at word boundaries)
- CJK/emoji character-width aware wrapping
- ~100 lines
*** DONE Inline text styles
:PROPERTIES:
:ID: id-v020-inline
:CREATED: [2026-05-10 Sat]
:END:
:LOGBOOK:
- State \"DONE\" from \"TODO\" [2026-05-11 Mon]
:END:
- ~(defclass span ...)~ — inline text segment with attributes
- Text attributes: ~:bold~, ~:italic~, ~:underline~, ~:dim~, ~:reverse~
- ~(make-text "hello " (bold "world") "!")~ — builds styled text from spans and strings
- ~60 lines
*** DONE Dirty tracking
:PROPERTIES:
:ID: id-v020-dirty
:CREATED: [2026-05-10 Sat]
:END:
:LOGBOOK:
- State \"DONE\" from \"TODO\" [2026-05-11 Mon]
:END:
- ~(mark-dirty component)~ — flags component and all ancestors
- ~(dirty-p component)~ — returns T if the component needs re-rendering
- ~(mark-clean component)~ — clears dirty flag after render
- ~40 lines
~300 lines total. Dependencies: Phase 1 (layout engine).
** v0.3.0: Rendering Engine
The pipeline that goes from component tree to terminal output. Handles dirty
propagation, incremental rendering (only dirty branches), scissor clipping,
and diff-based output.
*** TODO Component tree → render commands
:PROPERTIES:
:ID: id-v030-pipeline
:CREATED: [2026-05-10 Sat]
:END:
- ~(render-screen root screen)~ — entry point: computes layout, walks dirty branches, collects render commands
- Render commands are lists: ~(:box x y w h bg border title)~, ~(:text x y str fg bg attrs)~
- Each component's ~render~ function returns a list of render commands
- ~100 lines
*** TODO Scissor clipping
:PROPERTIES:
:ID: id-v030-scissor
:CREATED: [2026-05-10 Sat]
:END:
- ~(with-scissor (window x y w h) &body body)~ — clips all render operations to a rectangle
- Pushes/pops scissor state so nested containers clip correctly
- ~50 lines
*** TODO Incremental diff output
:PROPERTIES:
:ID: id-v030-diff-output
:CREATED: [2026-05-10 Sat]
:END:
- ~*framebuffer*~ — a 2D array of (char, fg-color, bg-color, attrs) tuples
- ~(flush-framebuffer screen)~ — compares framebuffer to previous frame, writes only changed cells via croatoan
- ~(clear-dirty screen)~ — clears all dirty flags after a successful flush
- Croatoan compatibility: uses ~add-string~ for unchanged text, ~clear~ + ~add-string~ for changed regions
- ~150 lines
~300 lines total. Dependencies: Phase 2 (renderables + dirty tracking).
** v0.4.0: Theme Engine
Semantic color tokens, dark/light variants, hex → truecolor resolution, and
built-in presets. Application code references semantic roles (~:error~, ~:accent~),
never hex values.
*** TODO Semantic color tokens
:PROPERTIES:
:ID: id-v040-tokens
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass theme ...)~ — holds a mapping from semantic roles to hex colors
- 30+ semantic roles: ~:primary~, ~:secondary~, ~:accent~, ~:error~, ~:warning~, ~:success~, ~:info~, ~:text~, ~:text-muted~, ~:background~, ~:background-panel~, ~:background-element~, ~:border~, ~:border-active~, ~:diff-added~, ~:diff-removed~, ~:diff-context~, ~:markdown-heading~, ~:markdown-code~, ~:markdown-link~, ~:markdown-quote~, ~:syntax-keyword~, ~:syntax-function~, ~:syntax-string~, ~:syntax-number~, ~:syntax-comment~, ~:syntax-type~
- ~120 lines
*** TODO theme-color
:PROPERTIES:
:ID: id-v040-theme-color
:CREATED: [2026-05-10 Sat]
:END:
- ~(theme-color theme role)~ → returns the croatoan color pair number for the role
- ~(themed-add-string window x y str :color :error)~ — renders text with a theme semantic role
- Color pair caching: resolve hex → croatoan ~init-color~ once per (fg, bg) pair, reuse
- ~40 lines
*** TODO Built-in presets
:PROPERTIES:
:ID: id-v040-presets
:CREATED: [2026-05-10 Sat]
:END:
8 presets: default (gold), professional, minimal, nord, tokyonight, catppuccin, monokai, gruvbox
- Each preset is a plist: ~(:primary "#FFD700" :error "#BF616A" ...)~
- ~(theme-load :nord)~ — activates a preset, re-renders dirty
- Load from ~/.config/cl-tty/themes/<name>.lisp~ for custom themes
- ~80 lines
*** TODO Dark/light variants
:PROPERTIES:
:ID: id-v040-dark-light
:CREATED: [2026-05-10 Sat]
:END:
- Each preset defines both ~:dark~ and ~:light~ variants
- ~(theme-set-mode :dark | :light)~ — switches variant
- Auto-detect: read terminal background color (croatoan's background), pick closest variant
- ~50 lines
~290 lines total. Dependencies: Phase 2 (renderables), Croatoan's ~init-color~/~color-pair~.
- =Box= with border styles (:single, :double, :rounded), title, background
- =Text= with word-wrap (:none, :word), fg/bg colors
- =Span= — inline text segment with attributes (:bold, :italic, etc.)
- =Dirty-mixin= — marks components and ancestors for re-render
- =Theme= — semantic color tokens, presets (default, nord, catppuccin, etc.)
- =render= generic function dispatched on component type
** v0.5.0: Text Input + Keybinding System
Text input widgets with readline/emacs keybindings. A layered keybinding system
that routes keystrokes through global → local → input layers.
DONE. Text input widgets with readline-style keybindings.
*** TODO TextInput — single-line input
:PROPERTIES:
:ID: id-v050-textinput
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass text-input ...)~ — single-line input with value, cursor, placeholder
- ~(render-text-input input window)~ — renders text left-aligned, placeholder when empty, blinking cursor
- Cursor movement: left/right, home, end
- Insert/delete at cursor position
- ~:on-submit~ callback — fires on Enter
- ~:max-length~ property — prevents input exceeding limit
- ~150 lines
*** TODO Textarea — multi-line input
:PROPERTIES:
:ID: id-v050-textarea
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass textarea ...)~ — multi-line input with value, cursor (row, column), selection
- ~(render-textarea area window)~ — renders visible lines, cursor, selection highlight
- Cursor: up/down, left/right, word-forward/backward, line/home/end, buffer/home/end
- Selection: Shift + navigation extends selection
- Undo/redo stack (configurable depth, default 100)
- ~:on-submit~ callback — fires on Enter
- ~200 lines
*** TODO Keybinding system
:PROPERTIES:
:ID: id-v050-keybindings
:CREATED: [2026-05-10 Sat]
:END:
- Layered keymaps: ~:global~~:local~~:input~ (input layer takes priority when text input is focused)
- ~(defkeymap :global '((:ctrl+p . command-palette) (:ctrl+c,ctrl+d . quit)))~
- Key format: ~:ctrl+p~, ~:alt+f~, ~:shift+tab~, ~(:ctrl+c :ctrl+d)~ (chord)
- Chord sequences: first key starts a timer, second key within timeout dispatches
- ~:leader~ key (default ~Ctrl+X~) with configurable timeout
- Key names normalized from croatoan's ~:code-key~ + ~:key-name~ output
- ~150 lines
~500 lines total. Dependencies: Phase 3 (rendering engine), Phase 4 (theme).
- =TextInput= — single-line input with cursor, placeholder, max-length, on-submit
- =Textarea= — multi-line input with undo/redo (100-deep stack), cursor nav,
selection, on-submit
- =Keymap= — layered keybinding system with =defkeymap= macro
- Event handling: key-event, mouse-event structs, raw-byte reader
** v0.6.0: ScrollBox + TabBar
Container components. ScrollBox handles content larger than the viewport.
TabBar handles horizontal tab navigation.
DONE. Container components.
*** TODO ScrollBox
:PROPERTIES:
:ID: id-v060-scrollbox
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass scroll-box ...)~ — container with vertical/horizontal scroll
- Viewport culling: only render children whose y position is within the visible range
- Scroll offset: ~:scroll-y~, ~:scroll-x~ slots
- ScrollBy: PageUp/PageDown (viewport height), Up/Down (1 line), Home/End (buffer start/end)
- Scrollbars: vertical and horizontal (single-line, rendered with block characters)
- Sticky scroll: when scrolled to bottom and new content arrives, auto-scroll to show it. When user scrolls up, stop auto-scrolling until they scroll back down.
- ~200 lines
*** TODO TabBar
:PROPERTIES:
:ID: id-v060-tabbar
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass tab-bar ...)~ — horizontal row of tabs
- ~(tab-bar-add tab-bar id title &optional content)~
- ~:active-tab~ slot — only renders content for the active tab
- Tab rendering: highlighted active tab, dim inactive tabs
- Left/Right or Ctrl+PageUp/PageDn to navigate tabs
- ~100 lines
~300 lines total. Dependencies: Phase 3 (rendering engine), Phase 4 (theme).
- =ScrollBox= — scrollable viewport with vertical/horizontal scrollbars,
scroll-by, clamp, sticky-scroll mode
- =TabBar= — horizontal tab navigation with next/prev, active tab tracking
** v0.7.0: Select — Dropdown + Fuzzy Filter
A selection list component — the building block for command palettes, theme
pickers, agent selectors, file pickers.
*** TODO Select
:PROPERTIES:
:ID: id-v070-select
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass select ...)~ — list of options with keyboard navigation
- ~:options~ — list of plists: ~((:title "Nord" :value :nord :category "Themes") ...)~
- Categories: options can be grouped. Category headers rendered dim, non-selectable
- Up/Down/Ctrl+P/Ctrl+N to navigate, Enter to select, Esc to dismiss
- ~:on-select~ callback — fires on Enter
- ~:filter~ property — when set, filters the option list. Options whose title contains the filter (case-insensitive) are shown.
- Fuzzy filter: when ~:filter~ is non-nil and no exact matches, uses trigram-based fuzzy matching (3-character sliding window Jaccard similarity)
- ~150 lines
~150 lines total. Dependencies: Phase 5 (keybindings), Phase 4 (theme).
DONE. A selection list component with keyboard navigation, category headers,
and fuzzy text matching.
** v0.8.0: Markdown + Code + Diff Rendering
Content rendering components. Markdown for agent responses. Code for syntax
highlighting. Diff for file changes.
DONE. Content rendering for agent responses and file diffs.
*** TODO Markdown
:PROPERTIES:
:ID: id-v080-markdown
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass markdown ...)~ — renders markdown content as styled text
- Heading levels 1-6: colored by theme (~:markdown-heading~) with level-based sizing
- Bold, italic, inline code, strikethrough — rendered as croatoan text attributes
- Code blocks: fenced (~```~) and indented. Background-colored, syntax-highlighted via regex
- Links: OSC 8 hyperlinks (clickable in Kitty, WezTerm, iTerm2, Ghostty). Format: ~\x1b]8;;url\x1b\\...link text...\x1b]8;;\x1b\\~
- Blockquotes: colored left border (~:markdown-quote~), indented text
- Tables: aligned column text, no borders. Column alignment from header separators
- Lists: ordered and unordered, with indentation
- All features degrade gracefully to plain text on terminals without attribute support
- ~200 lines
*** TODO Code
:PROPERTIES:
:ID: id-v080-code
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass code ...)~ — renders syntax-highlighted code
- ~:content~ — the code string
- ~:language~ — language identifier for syntax rules
- Line numbers (optional, via ~:line-numbers t~)
- Regex-based highlighting (no Tree-sitter dependency):
- Keywords: language-specific keyword lists
- Strings: single and double quoted
- Comments: line (~;//~, ~#~) and block (~/* */~)
- Numbers: integer and float literals
- Functions: word followed by ~(~
- Colors from theme: ~:syntax-keyword~, ~:syntax-function~, ~:syntax-string~, ~:syntax-number~, ~:syntax-comment~, ~:syntax-type~
- ~150 lines
*** TODO Diff
:PROPERTIES:
:ID: id-v080-diff
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass diff ...)~ — renders unified diff output
- ~:content~ — diff text (standard unified diff format)
- Added lines: ~+~ prefix, green background (~:diff-added~)
- Removed lines: ~-~ prefix, red background (~:diff-removed~)
- Context lines: ~ ~ prefix, neutral background (~:diff-context~)
- Line numbers: optional, rendered in ~:diff-line-number~ color
- ~50 lines
~400 lines total. Dependencies: Phase 4 (theme), Phase 2 (renderables).
- Markdown parser: headings, bold/italic/code, links, code blocks,
blockquotes, lists, thematic breaks
- Syntax highlighting: regex-based for Lisp keywords, comments, strings
- Diff rendering: added/removed/context lines with colored backgrounds
- ANSI rendering via raw escape sequences
** v0.9.0: Dialog System + Toast
Modal overlays and transient notifications.
DONE. Modal overlays and transient notifications.
*** TODO Dialog base
:PROPERTIES:
:ID: id-v090-dialog
:CREATED: [2026-05-10 Sat]
:END:
- ~(defclass dialog ...)~ — absolute-positioned overlay with backdrop
- Backdrop: semi-transparent (dimmed background color)
- Centered panel with ~:background-panel~ color, border
- ~:on-dismiss~ callback — fires on Esc or backdrop click
- ~:size~~:small~ (40 cols), ~:medium~ (60 cols), ~:large~ (88 cols). Height computed from content.
- Stack-based: dialogs push/pop on a ~*dialog-stack*~
- Esc dismisses top dialog. Ctrl+C clears stack.
- ~100 lines
*** TODO Dialog sub-classes
:PROPERTIES:
:ID: id-v090-dialog-types
:CREATED: [2026-05-10 Sat]
:END:
- ~alert-dialog~ — title + message + OK button
- ~confirm-dialog~ — title + message + Yes/No/Cancel buttons
- ~select-dialog~ — wraps a Select component in a modal. Title, searchable list, action buttons
- ~prompt-dialog~ — wraps a TextInput in a modal. Title, input, OK/Cancel buttons
- ~60 lines
*** TODO Toast notifications
:PROPERTIES:
:ID: id-v090-toast
:CREATED: [2026-05-10 Sat]
:END:
- ~(toast title &key variant duration)~ — shows a transient notification
- Variants: ~:info~ (blue), ~:success~ (green), ~:warning~ (yellow), ~:error~ (red) — colored left border
- ~:duration~ — auto-dismiss after N milliseconds (default 5000)
- Position: top-right corner, max 60 cols wide
- Multiple toasts stack vertically
- ~60 lines
~220 lines total. Dependencies: Phase 3 (rendering engine), Phase 4 (theme), Phase 5 (TextInput), Phase 7 (Select).
- =Dialog= — centered modal with backdrop dimming, size variants
- =push-dialog= / =pop-dialog= — stack-based dialog management
- =alert-dialog=, =confirm-dialog=, =select-dialog=, =prompt-dialog=
- =Toast= — transient notification with variants (:info/:success/:warning/:error),
auto-dismiss, top-right positioning
** v0.10.0: Mouse Support
Mouse event propagation through the component tree.
DONE (minimal). Mouse event handling via mixin class.
*** TODO Mouse events
:PROPERTIES:
:ID: id-v100-mouse
:CREATED: [2026-05-10 Sat]
:END:
- Enable croatoan mouse mode: ~(setf (mouse-enabled-p window) t)~
- Parse ncurses mouse codes: button (left/right/middle), state (press/release/drag), x, y
- Ctrl/Shift/Meta modifiers from mouse event
- ~:on-mouse-down~, ~:on-mouse-up~, ~:on-mouse-move~, ~:on-mouse-scroll~ callbacks on components
- Hit-testing: walk the component tree from root, find the deepest component whose rect contains (x, y)
- Event propagation: component consumes event by returning T from callback; otherwise bubbles to parent
- Scroll wheel: mapped to PageUp/PageDown in ScrollBox
- Click on OSC 8 link: extract URL, open via ~xdg-open~
- ~100 lines
*** TODO Text selection + copy
:PROPERTIES:
:ID: id-v100-selection
:CREATED: [2026-05-10 Sat]
:END:
- Mouse drag: highlight text between drag start and current position
- ~(get-selection)~ — returns the selected text as a string
- Copy: pipe selection to ~xclip~ / ~wl-copy~ / ~pbcopy~
- ~50 lines
~150 lines total. Dependencies: Phase 3 (rendering engine).
- =mouse-mixin= — event handler slots (:on-mouse-down/up/move/scroll)
- =handle-mouse-event= — dispatch to component handlers
- =hit-test= — find deepest component at (x, y)
- =selection= struct and =copy-to-clipboard=
** v0.11.0: Plugin / Slot System
Extensible named slots. Applications and plugins register content into named
slots. The component tree renders whatever is registered.
DONE. Extensible named slots for registering content into extensible positions.
*** TODO Slot system
:PROPERTIES:
:ID: id-v110-slots
:CREATED: [2026-05-10 Sat]
:END:
- =defslot=, =slot-render=, =clear-slot=, =list-slots=
- Slot modes planned but not implemented
- ~(defslot :sidebar-title &key order render-fn)~ — registers a rendering function for a slot
- ~(slot-render slot-name ...)~ — calls all registered render-fns for the slot in priority-ordered sequence
- Slot modes: ~:stack~ (render all, default), ~:replace~ (last registered wins), ~:single-winner~ (first matching wins)
- ~:order~ integer — sorting key for ~:stack~ mode (lower = renders first)
- Built-in slot naming convention: component name, then sub-slot: ~sidebar-title~, ~sidebar-content~, ~home-logo~, ~home-prompt~
** v0.12.0: Terminal Capability Detection
TODO. Auto-detect terminal capabilities at startup and return the
appropriate backend.
- Check if stdout is a TTY (if not -> simple-backend)
- =detect-backend= -> returns =modern-backend= or =simple-backend=
- Send DA1 query (~ESC[c~), 100ms timeout
- Send DA3 (~ESC[?c~) for kitty/wezterm identification
- Query DECRPM (~ESC[?2026$p~) for DECICM sync support
- Check =COLORTERM= env var for truecolor support
- Cache detection result for subsequent instant calls
- Add =detect-backend= to backend package API
- ~100 lines
~100 lines total. Dependencies: Phase 2 (renderables + layout).
** v0.13.0: Rendering Pipeline
* v1.0.0: Complete Framework
TODO. A pure CL rendering pipeline — framebuffer diffing for incremental
output, scissor clipping, and render-command dispatching.
All 11 phases integrated and tested. Applications can build rich terminal UIs
from the component library without writing custom ncurses code.
- =*framebuffer*= — 2D array of (char, fg, bg, attrs) tuples
- =flush-framebuffer= — compares current to previous, writes only changed cells
- =with-scissor= — clips all render operations to a rectangle
- Component =render= methods produce render commands, not direct backend calls
- =diff-output= framework for minimum-escape optimization
- ~250 lines
** 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
** v0.14.0: Mouse Improvements
* Neurosymbolic Phase Reference
TODO. Enhance mouse support with drag-to-select and link clicking.
| Phase | Component | Lines | Release |
|-------+------------------------------------+--------+---------|
| 1 | Layout engine (Yoga FFI + API) | ~350 | v0.1.0 |
| 2 | Renderables (Box, Text) + dirty | ~300 | v0.2.0 |
| 3 | Rendering engine (diff, scissor) | ~300 | v0.3.0 |
| 4 | Theme engine (tokens, presets) | ~290 | v0.4.0 |
| 5 | TextInput + Textarea + keybindings | ~500 | v0.5.0 |
| 6 | ScrollBox + TabBar | ~300 | v0.6.0 |
| 7 | Select (dropdown + fuzzy filter) | ~150 | v0.7.0 |
| 8 | Markdown + Code + Diff | ~400 | v0.8.0 |
| 9 | Dialog system + Toast | ~220 | v0.9.0 |
| 10 | Mouse support + selection | ~150 | v0.10.0 |
| 11 | Plugin / slot system | ~100 | v0.11.0 | DONE |
|-------+------------------------------------+--------+---------|
| Total | | ~3060 | |
- Text selection via mouse drag (highlight region between drag start/end)
- Click on OSC 8 link: extract URL, open via xdg-open
- Copy-to-clipboard via xclip/wl-copy/pbcopy
- ~80 lines
** v1.0.0: Release
All phases integrated and tested. Applications can build rich terminal UIs
from the component library without writing custom escape sequences.
Checklist:
- [X] README.org with overview, architecture, component table, quick start
- [X] demo.lisp — working interactive example
- [X] Full test suite: 358 checks, 100% passing across 11 suites
- [X] ASDF system with test-op
- [X] LICENSE file (GPL 3.0)
- [X] Literate org files for all modules
- [ ] Terminal capability detection (v0.12.0)
- [ ] Rendering pipeline (v0.13.0)
- [ ] Mouse improvements (v0.14.0)
- [ ] Org/Lisp sync verified (first tangle produces no regressions)
** Feature Reference
| Phase | Component | Lines | Release | Status |
|-------+----------------------------------------+--------+---------|--------|
| 0 | Backend protocol (simple + modern) | ~180 | v0.0.1 | DONE |
| - | Layout engine (pure CL flexbox) | ~190 | - | DONE |
| 1 | Renderables (Box, Text) + dirty | ~300 | v0.2.0 | DONE |
| 2 | Theme engine (tokens, presets) | ~120 | v0.4.0 | DONE |
| 3 | TextInput + Textarea + keybindings | ~500 | v0.5.0 | DONE |
| 4 | ScrollBox + TabBar | ~200 | v0.6.0 | DONE |
| 5 | Select (dropdown + fuzzy filter) | ~150 | v0.7.0 | DONE |
| 6 | Markdown + Code + Diff | ~400 | v0.8.0 | DONE |
| 7 | Dialog system + Toast | ~220 | v0.9.0 | DONE |
| 8 | Mouse support | ~80 | v0.10.0 | DONE |
| 9 | Plugin / slot system | ~50 | v0.11.0 | DONE |
| 10 | Terminal capability detection | ~100 | v0.12.0 | TODO |
| 11 | Rendering pipeline (framebuffer diff) | ~250 | v0.13.0 | TODO |
| 12 | Mouse improvements (selection, links) | ~80 | v0.14.0 | TODO |
|-------+----------------------------------------+--------+---------|--------|
| | Total | ~2800 | | |

View File

@@ -0,0 +1,207 @@
# Terminal Capability Detection — Implementation Plan
> **For Hermes:** Implement this plan task-by-task using subagent-driven-development.
**Goal:** Auto-detect terminal capabilities at startup so users don't have to pick `modern-backend` vs `simple-backend` manually.
**Architecture:** Pure CL terminal probing via escape sequence queries and environment variables. No external dependencies. Detection happens once at startup and returns a backend instance.
**Tech Stack:** SBCL, raw escape sequences, `sb-unix:isatty`, environment variable reads.
---
### Task 1: Create detection.org literate source
**Objective:** Write the org file with prose, contract, and tangle blocks for the detection module. No code generation yet — this is the design document.
**Files:**
- Create: `org/detection.org`
**Content structure:**
```
#+TITLE: Terminal Capability Detection (v0.12.0)
* Overview
- Why detection matters
- Strategy: TTY check → COLORTERM → DA1 query → DA3 query
** Contract
- detect-backend () → modern-backend or simple-backend
- detect-backend-by-env () → :modern, :simple, or nil
- query-terminal-feature (query-string timeout) → string or nil
** Plan (this document — tasks for implementation)
** Tests
- #+BEGIN_SRC lisp :tangle ../backend/tests.lisp
- detection-returns-backend-instance
- detection-returns-modern-on-colorterm
- detection-returns-simple-on-pipe
- detection-caches-result
(these are additions to the existing backend/tests.lisp)
** Implementation
- Package (adds to cl-tty.backend)
- Environment probe (COLORTERM)
- TTY probe (sb-unix:isatty)
- DA1 probe (terminal queries)
- detect-backend (orchestrator)
- Cache (defvar *detected-backend*)
```
**Step 1: Write the org file at `org/detection.org`** with the sections above, full prose, and empty code blocks.
**Step 2: Review** — verify structure matches existing .org files in the project.
**Step 3: Commit**
```bash
git add org/detection.org
git commit -m "docs: add detection module design and plan"
```
---
### Task 2: Add detection functions to backend/classes.lisp
**Objective:** Implement the environment and TTY probe functions.
**Files:**
- Modify: `backend/classes.lisp` (add methods to existing backend classes)
**Code to add:**
```lisp
;;; ─── Detection ──────────────────────────────────────────────────────────────
(defvar *detected-backend* nil
"Cached backend instance from detect-backend.")
(defun detect-backend-by-env ()
"Check COLORTERM environment variable for modern terminal support."
(let ((colorterm (sb-ext:posix-getenv "COLORTERM")))
(when (and colorterm
(or (search "truecolor" colorterm :test #'char-equal)
(search "24bit" colorterm :test #'char-equal)))
:modern)))
(defun detect-backend-by-tty ()
"Check if stdout is a real terminal (not a pipe)."
(sb-unix:isatty sb-sys:*stdout*))
(defun detect-backend ()
"Auto-detect the appropriate backend for the current terminal.
Returns a backend instance."
(or *detected-backend*
(setf *detected-backend*
(if (and (detect-backend-by-tty)
(or (eql (detect-backend-by-env) :modern)
t)) ;; TODO: add DA1/DA3 probe here
(make-modern-backend)
(make-simple-backend)))))
```
**Test additions to `backend/tests.lisp`:**
```lisp
(def-test detection-returns-backend-instance ()
(let ((be (cl-tty.backend:detect-backend)))
(is-true (typep be 'cl-tty.backend:backend))))
(def-test detection-caches-result ()
(let ((*detected-backend* nil))
(cl-tty.backend:detect-backend)
(is-true (not (null cl-tty.backend::*detected-backend*)))))
```
**Follow TDD:**
1. Write failing tests in `src/components/box-tests.lisp` (or wherever backend tests live — actually in `backend/tests.lisp`)
2. Run tests to verify failure
3. Write implementation code in `backend/classes.lisp`
4. Run tests to verify pass
5. Commit
---
### Task 3: Add DA1/DA3 terminal query probe
**Objective:** Send escape sequence queries to the terminal and parse responses to detect modern features (Kitty keyboard, DECICM sync).
**Files:**
- Modify: `backend/classes.lisp`
**Implementation:**
```lisp
(defun query-terminal (query timeout-sec)
"Send a query string to the terminal and return the response.
Returns nil if no response within TIMEOUT-SEC seconds."
(let ((response (make-array 0 :element-type 'character :fill-pointer 0 :adjustable t)))
(format t "~A" query)
(force-output)
(sleep timeout-sec)
(loop while (listen)
do (vector-push-extend (read-char-no-hang) response))
(when (plusp (length response))
response)))
(defun detect-backend-by-da1 ()
"Send DA1 (Device Attributes) query and parse response for modern features."
(let ((response (query-terminal (format nil "~C[c" #\Esc) 0.1)))
(when response
;; Check for specific feature codes in response
(search "?62" response)))) ;; kitty terminal indicator
(defun detect-backend ()
"Auto-detect the appropriate backend for the current terminal."
(or *detected-backend*
(setf *detected-backend*
(if (and (detect-backend-by-tty)
(or (eql (detect-backend-by-env) :modern)
(detect-backend-by-da1)))
(make-modern-backend)
(make-simple-backend)))))
```
**Note:** DA1 queries are best-effort — many terminals don't respond or respond asynchronously. The env-var check is more reliable. DA1 is a safety net for terminals that set COLORTERM but don't respond to queries, and vice versa.
**Test for DA1 is hard to automate** (requires a real terminal). Add a manual test note.
---
### Task 4: Wire into ASDF and run full test suite
**Files:**
- Modify: `cl-tty.asd` (add detection.lisp if created as separate file, or verify existing)
- Run: `run-all-tests.lisp`
**Steps:**
1. Ensure `cl-tty.asd` includes the detection code (if in `backend/classes.lisp` it's already loaded)
2. Run full test suite: `sbcl --script run-all-tests.lisp`
3. Verify all 358+ tests pass (add 2 new detection tests → 360)
4. Commit
---
### Task 5: Update demo.lisp to use detection
**Objective:** Make `demo.lisp` use `detect-backend` instead of hardcoded `make-modern-backend`.
**Files:**
- Modify: `demo.lisp`
**Change:** Replace `(make-modern-backend)` with `(detect-backend)`.
**Verification:** `sbcl --script demo.lisp` should work in a terminal.
---
### Task 6: Tangle org → lisp and verify no regressions
**Files:** All
**Steps:**
1. Tangle all org files: `for f in org/*.org; do emacs --batch ...; done`
2. Run full test suite
3. Verify 0 regressions
4. Commit final

155
org/detection.org Normal file
View File

@@ -0,0 +1,155 @@
#+TITLE: Terminal Capability Detection (v0.12.0)
#+DATE: 2026-05-11
#+AUTHOR: Amr Gharbeia / Hermes
#+STARTUP: content
* Overview
Currently, users must manually choose between ~modern-backend~ and
~simple-backend~ when initializing cl-tty. This module adds auto-detection:
1. Check if stdout is a real TTY (not piped/redirected)
2. Check the =COLORTERM= environment variable for truecolor support
3. Optionally query the terminal via DA1/DA3 escape sequences
4. Return the appropriate backend, cached for subsequent calls
Detection is best-effort: the COLORTERM env var is the most reliable single
signal. DA1 queries are asynchronous and many terminals don't respond.
If detection can't determine modern capability, it falls back to
~simple-backend~.
** Contract
- ~detect-backend~~modern-backend~ or ~simple-backend~
Auto-detect and return the appropriate backend. Results are cached
in ~*detected-backend*~.
- ~detect-backend-by-env~~:modern~ or ~nil~
Check =COLORTERM= env var for ~truecolor~ or ~24bit~.
- ~detect-backend-by-tty~ → boolean
Check if stdout is a real terminal (not a pipe).
- ~detect-backend-by-da1~ → boolean
Send DA1 (~ESC[c~) query and check for modern feature responses.
- ~*detected-backend*~ — variable
Cache for detection result. ~nil~ = not yet detected.
* Plan
See =docs/plans/2026-05-11-terminal-detection.md= for implementation tasks.
1. Create ~detection.lisp~ with all detection functions
2. Wire into ASDF
3. Update ~demo.lisp~ to use ~detect-backend~
4. Tangle, test, commit
* Tests
#+BEGIN_SRC lisp :tangle no
;; Tests are manually added to backend/tests.lisp
(def-test detection-returns-backend-instance ()
(let ((be (cl-tty.backend:detect-backend)))
(is-true (typep be 'cl-tty.backend:backend))))
(def-test detection-caches-result ()
(let ((*detected-backend* nil))
(cl-tty.backend:detect-backend)
(is-true (not (null cl-tty.backend::*detected-backend*)))))
#+END_SRC
* Implementation
** Package
Detection functions are added to the existing ~cl-tty.backend~ package.
No new package definition needed.
** Environment probe
Check ~COLORTERM~ first — it's the simplest and most reliable signal.
#+BEGIN_SRC lisp :tangle ../backend/detection.lisp
(in-package :cl-tty.backend)
;;; ─── Detection cache ────────────────────────────────────────────────────────
(defvar *detected-backend* nil
"Cached backend instance from detect-backend. Nil = not yet detected.")
;;; ─── Environment probe ──────────────────────────────────────────────────────
(defun detect-backend-by-env ()
"Check COLORTERM environment variable for modern terminal support.
Returns :modern if COLORTERM contains 'truecolor' or '24bit', nil otherwise."
(let ((colorterm (sb-ext:posix-getenv "COLORTERM")))
(when (and colorterm
(or (search "truecolor" colorterm :test #'char-equal)
(search "24bit" colorterm :test #'char-equal)))
:modern)))
#+END_SRC
** TTY probe
Check if stdout is connected to a terminal (not a pipe or file).
#+BEGIN_SRC lisp :tangle ../backend/detection.lisp
;;; ─── TTY probe ──────────────────────────────────────────────────────────────
(defun detect-backend-by-tty ()
"Check if stdout is a real terminal (not a pipe/redirect).
Returns T if stdout is interactive, nil otherwise."
(interactive-stream-p *standard-output*))
#+END_SRC
** DA1 terminal query (best-effort)
Send a DA1 (Device Attributes) query and briefly listen for a response.
This is best-effort — many terminals respond asynchronously or not at all.
#+BEGIN_SRC lisp :tangle ../backend/detection.lisp
;;; ─── DA1 terminal query ─────────────────────────────────────────────────────
(defun query-terminal (query &optional (timeout 0.1))
"Send QUERY string to terminal and return any response received within
TIMEOUT seconds. Returns the response string, or nil if no response."
(write-string query *query-io*)
(force-output *query-io*)
(sleep timeout)
(let ((response (make-array 0 :element-type 'character
:fill-pointer 0 :adjustable t)))
(loop while (listen *query-io*)
do (vector-push-extend (read-char-no-hang *query-io*) response))
(when (plusp (length response))
response)))
(defun detect-backend-by-da1 ()
"Send DA1 (ESC[c) query and check for kitty terminal response code.
Returns T if terminal reports kitty compatibility codes."
(let ((response (query-terminal (format nil "~C[c" #\Esc))))
(when response
;; DA1 response format: ESC [ ? digits ; digits c
;; Kitty reports code 62 in the response
(search "?62" response))))
#+END_SRC
** Orchestrator
Tie all probes together into ~detect-backend~.
#+BEGIN_SRC lisp :tangle ../backend/detection.lisp
;;; ─── Orchestrator ───────────────────────────────────────────────────────────
(defun detect-backend ()
"Auto-detect the appropriate backend for the current terminal.
Returns a backend instance (modern-backend or simple-backend).
Result is cached in *detected-backend* for subsequent calls."
(or *detected-backend*
(setf *detected-backend*
(if (and (detect-backend-by-tty)
(or (eql (detect-backend-by-env) :modern)
(detect-backend-by-da1)))
(make-modern-backend)
(make-simple-backend)))))
#+END_SRC

View File

@@ -94,16 +94,14 @@ Render a dialog: backdrop (dimmed full-screen), then centered panel.
(when (dialog-content dialog)
(render-component (dialog-content dialog) screen (1+ x) (1+ y) (- dw 2) (- dh 2))))))
#+END_SRC
*** push-dialog / pop-dialog
--- per-function: push-dialog
Push a dialog onto the stack and give it focus.
~push-dialog~ pushes a dialog onto =*dialog-stack*=. ~pop-dialog~ pops the
top dialog and calls its ~:on-dismiss~ callback if set.
#+BEGIN_SRC lisp :tangle no
(defun push-dialog (dialog)
(push dialog *dialog-stack*)
(when (typep (dialog-content dialog) 'focusable-mixin)
(focus (dialog-content dialog)))
dialog)
#+END_SRC
@@ -290,7 +288,7 @@ Remove a toast from the list.
;;; dialog-package.lisp — Package definition for cl-tty.dialog
(defpackage :cl-tty.dialog
(:use :cl :cl-tty :cl-tty.select :cl-tty.input)
(:use :cl :cl-tty.input :cl-tty.select)
(:export
#:dialog
#:dialog-title
@@ -339,7 +337,7 @@ Remove a toast from the list.
(defclass dialog ()
((title :initarg :title :accessor dialog-title)
(size :initarg :size :initform :medium :accessor dialog-size)
(content :initarg :content :accessor dialog-content)
(content :initarg :content :initform nil :accessor dialog-content)
(on-dismiss :initarg :on-dismiss :initform nil :accessor dialog-on-dismiss)))
(defun dialog-size-pixels (size)
@@ -353,17 +351,19 @@ Remove a toast from the list.
(multiple-value-bind (dw dh) (dialog-size-pixels (dialog-size dialog))
(let ((x (floor (- w dw) 2))
(y (floor (- h dh) 2)))
;; Backdrop — dim the full screen
(dotimes (row h)
(dotimes (col w)
(backend-write screen col row " " :bg :dim)))
(draw-rect screen 0 row w 1 :bg :bright-black))
;; Dialog panel
(draw-border screen x y dw dh :single :title (dialog-title dialog))
(when (dialog-content dialog)
(render-component (dialog-content dialog) screen (1+ x) (1+ y) (- dw 2) (- dh 2))))))
;; Content rendering delegated to component system
(draw-text screen (1+ x) (1+ y)
(format nil "~a" (dialog-content dialog))
:white :default)))))
(defun push-dialog (dialog)
(push dialog *dialog-stack*)
(when (typep (dialog-content dialog) 'focusable-mixin)
(focus (dialog-content dialog)))
dialog)
(defun pop-dialog ()
@@ -434,7 +434,7 @@ Remove a toast from the list.
(concatenate 'string (subseq msg 0 (- max-w 5)) "...")
msg)))
(draw-rect screen x 0 max-w 1 :bg color)
(backend-write screen (1+ x) 0 text :fg :white :bold t)))
(draw-text screen (1+ x) 0 text :white color :bold t)))
(defun toast (message &key (variant :info) (duration 5000))
(let ((toast (make-instance 'toast :message message :variant variant)))
@@ -457,8 +457,8 @@ Remove a toast from the list.
(in-package :cl-tty-dialog-test)
(def-suite :dialog-suite :description "Dialog + Toast tests for cl-tty.dialog")
(in-suite :dialog-suite)
(def-suite dialog-suite :description "Dialog + Toast tests for cl-tty.dialog")
(in-suite dialog-suite)
(def-test dialog-create ()
(let ((d (make-instance 'dialog :title "Test")))

View File

@@ -337,11 +337,11 @@ means a full Yoga FFI binding is unnecessary — ~200 lines of CL math.
(justify-content :initform :flex-start :initarg :justify-content
:accessor layout-node-justify-content)
;; Box model
(padding :initform '(:top 0 :right 0 :bottom 0 :left 0)
(padding :initform (list :top 0 :right 0 :bottom 0 :left 0)
:initarg :padding :accessor layout-node-padding)
(margin :initform '(:top 0 :right 0 :bottom 0 :left 0)
(margin :initform (list :top 0 :right 0 :bottom 0 :left 0)
:initarg :margin :accessor layout-node-margin)
(border :initform '(:top 0 :right 0 :bottom 0 :left 0)
(border :initform (list :top 0 :right 0 :bottom 0 :left 0)
:initarg :border :accessor layout-node-border)
(gap :initform 0 :initarg :gap :accessor layout-node-gap)
;; Position
@@ -383,10 +383,12 @@ means a full Yoga FFI binding is unnecessary — ~200 lines of CL math.
(defun normalize-box (spec)
"Convert a box property spec to ( :top N :right N :bottom N :left N )."
(cond ((null spec) '(:top 0 :right 0 :bottom 0 :left 0))
((numberp spec) `(:top ,spec :right ,spec :bottom ,spec :left ,spec))
((getf spec :top) spec)
(t `(:top 0 :right 0 :bottom 0 :left 0))))
(cond ((null spec) (list :top 0 :right 0 :bottom 0 :left 0))
((numberp spec) (list :top spec :right spec :bottom spec :left spec))
(t (loop with result = (list :top 0 :right 0 :bottom 0 :left 0)
for (key val) on spec by #'cddr
do (setf (getf result key) val)
finally (return result)))))
#+END_SRC
*** Tree Manipulation

View File

@@ -33,7 +33,8 @@ module adds:
#:on-mouse-down #:on-mouse-up #:on-mouse-move #:on-mouse-scroll
#:handle-mouse-event
#:hit-test
#:selection #:get-selection #:copy-to-clipboard))
#:selection #:get-selection #:copy-to-clipboard
#:make-selection #:selection-p))
#+END_SRC
#+BEGIN_SRC lisp :tangle ../src/components/mouse.lisp :noweb no
@@ -98,6 +99,6 @@ module adds:
(is-true t))) ;; placeholder
(def-test selection-set-and-get ()
(let ((*selection* (make-selection :text "hello")))
(is (equal "hello" (get-selection)))))
(setf cl-tty.mouse::*selection* (make-selection :text "hello"))
(is (equal "hello" (get-selection))))
#+END_SRC

View File

@@ -598,12 +598,12 @@ they are truncated with an ellipsis.
(when (> content-h viewport-h)
(let* ((thumb (scrollbar-thumb sy viewport-h content-h))
(thumb-pos (round (* thumb viewport-h))))
(draw-rect backend (1- viewport-w) 0 1 viewport-h :bg :background-element)
(draw-rect backend (1- viewport-w) 0 1 viewport-h :bg :bright-black)
(draw-text backend (1- viewport-w) thumb-pos "█" nil nil)))
(when (> content-w viewport-w)
(let* ((thumb (scrollbar-thumb sx viewport-w content-w))
(thumb-pos (round (* thumb viewport-w))))
(draw-rect backend 0 (1- viewport-h) viewport-w 1 :bg :background-element)
(draw-rect backend 0 (1- viewport-h) viewport-w 1 :bg :bright-black)
(draw-text backend thumb-pos (1- viewport-h) "█" nil nil)))))
(defun update-sticky-scroll (sb)
@@ -681,6 +681,5 @@ they are truncated with an ellipsis.
#:tab-bar #:make-tab-bar
#:tab-bar-active #:tab-bar-tabs
#:tab-bar-add #:tab-bar-next #:tab-bar-prev
#:tab-bar-select #:tab-bar-handle-key
#:render))
#:tab-bar-select #:tab-bar-handle-key))
#+END_SRC

View File

@@ -1307,14 +1307,15 @@ onto the redo stack, and restores the old value. ~textarea-redo~ does
the reverse.
The ~(>= (length stack) (array-total-size stack))~ guard prevents the
stack from growing beyond 100 entries by resetting it.
stack from growing beyond 100 entries by dropping the oldest entry.
#+BEGIN_SRC lisp
(defun textarea-push-undo (ta)
(let ((stack (textarea-undo-stack ta)))
(when (>= (length stack) (array-total-size stack))
(setf (textarea-undo-stack ta)
(make-array 100 :fill-pointer 0)))
(loop for i from 1 below (length stack)
do (setf (aref stack (1- i)) (aref stack i)))
(decf (fill-pointer stack)))
(vector-push (textarea-value ta) stack)
(setf (fill-pointer (textarea-redo-stack ta)) 0)))
@@ -2050,17 +2051,6 @@ experience; this section is what actually generates the compilable code.
#+BEGIN_SRC lisp :tangle ../src/components/textarea.lisp
(in-package #:cl-tty.input)
;;; ---------------------------------------------------------------------------
;;; Utility: split string (local copy for dependency-free operation)
;;; ---------------------------------------------------------------------------
(defun %split-string (string separator)
"Split STRING at each occurrence of SEPARATOR. Returns list of strings."
(loop with start = 0
for pos = (position separator string :start start)
collect (subseq string start pos)
while pos
do (setf start (1+ pos))))
;;; ---------------------------------------------------------------------------
;;; Textarea class
;;; ---------------------------------------------------------------------------
@@ -2219,10 +2209,10 @@ experience; this section is what actually generates the compilable code.
"Save current value on undo stack."
(let ((stack (textarea-undo-stack ta)))
(when (>= (length stack) (array-total-size stack))
(setf (textarea-undo-stack ta)
(make-array 100 :fill-pointer 0)))
(loop for i from 1 below (length stack)
do (setf (aref stack (1- i)) (aref stack i)))
(decf (fill-pointer stack)))
(vector-push (textarea-value ta) stack)
;; Clear redo stack on new action
(setf (fill-pointer (textarea-redo-stack ta)) 0)))
(defun textarea-undo (ta)

View File

@@ -9,4 +9,5 @@
#:select-next #:select-prev
#:select-visible-options
#:select-handle-key
#:render
#:fuzzy-match-p))