feat: vendor gesture-control source into packages/gesture-control

Bring the Ark0N/codeman-gesture-control repo in-tree as the codeman-gesture-control
workspace package so the hand-tracking overlay can be developed in the Codeman repo.
New npm run build:gesture bundles src/codeman/entry.ts into the served
gesture-codeman.js; scripts/build.mjs reruns it on every production build.
Source formatted to Codeman's prettier style.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
arkon
2026-06-08 20:48:20 +02:00
co-authored by Claude Opus 4.8
parent 695e4047a1
commit 09a142d14b
27 changed files with 3630 additions and 441 deletions
+8 -1
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@@ -61,10 +61,17 @@ tmp/
# Opt-in gesture overlay runtime assets: large MediaPipe wasm + model (~27 MB)
# fetched at build/install by scripts/fetch-gesture-assets.mjs, kept out of git.
# (The gesture bundle itself, gesture-codeman.js, IS tracked.)
# (The gesture bundle itself, gesture-codeman.js, IS tracked — built from
# packages/gesture-control source by `npm run build:gesture`.)
src/web/public/gesture/wasm/
src/web/public/gesture/*.task
# Gesture-control workspace package build outputs (source is tracked; the
# Codeman bundle is emitted to src/web/public/gesture/gesture-codeman.js instead).
packages/gesture-control/dist/
packages/gesture-control/dist-codeman/
packages/gesture-control/.vite/
# Claude Code plan tracking
plan.json
+12
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@@ -1,5 +1,17 @@
# aicodeman
## 0.9.2
### Patch Changes
- Vendor the gesture-control source into the repo for in-tree development.
The hand-tracking overlay's source (previously the standalone `Ark0N/codeman-gesture-control` repo) now lives at `packages/gesture-control/` as the `codeman-gesture-control` workspace package: the transport-agnostic gesture core (`src/gesture/*` — MediaPipe GestureRecognizer → One-Euro-filtered cursor → pinch state machine), the Codeman consumer entry (`src/codeman/entry.ts`, maps grab/drag/drop onto real session tabs + toolbar buttons), and a standalone vite playground for iterating on gesture feel.
- New `npm run build:gesture` (`scripts/build-gesture-bundle.mjs`) esbuild-bundles `entry.ts` into the served `src/web/public/gesture/gesture-codeman.js`; `scripts/build.mjs` now reruns it on every production build so the served bundle always reflects current source. The MediaPipe wasm + model stay runtime-loaded from same-origin `/gesture/` (unchanged).
- Added `@mediapipe/tasks-vision@0.10.21` as the package dependency (kept in sync with `fetch-gesture-assets.mjs`). The playground uses vite 7 (no known advisories).
No change to the shipped app behavior — gesture control remains opt-in (`CODEMAN_GESTURE=1` + the App Settings → Input toggle). This release just makes the overlay developable inside the Codeman repo.
## 0.9.1
### Patch Changes
+6 -2
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@@ -56,7 +56,7 @@ When user says "COM":
CI runs `npm run check:lockfile` on every push/PR, so lockfile drift fails the build even if the `version-packages` script is bypassed.
**Version**: 0.9.1 (must match `package.json`)
**Version**: 0.9.2 (must match `package.json`)
## Project Overview
@@ -82,6 +82,8 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
| Continuous typecheck | `tsc --noEmit --watch` |
| Test coverage | `npm run test:coverage` |
| Dead-code sweep | `npm run knip` (config in `knip.json`) |
| Rebuild gesture overlay | `npm run build:gesture` (esbuild `packages/gesture-control/src/codeman/entry.ts` → `src/web/public/gesture/gesture-codeman.js`; commit the result) |
| Gesture playground | `npm run dev` **in** `packages/gesture-control/` (standalone vite demo, fake tabs) |
| Check public-asset formatting | `npm run check:public-assets` (prettier-checks `src/web/public/**` text assets; `scripts/check-public-assets.mjs`) |
| Production start | `npm run start` |
| Production logs | `journalctl --user -u codeman-web -f` |
@@ -130,7 +132,7 @@ Codeman is a Claude Code session manager with web interface and autonomous Ralph
★ = Large file (>50KB). All files have `@fileoverview` JSDoc — read that before diving in. Discovery aid: `grep -l '@fileoverview' src/web/routes/*.ts` lists all route modules; same grep works for `src/types/`, `src/web/public/*.js`.
**Local package**: `packages/xterm-zerolag-input/` — local echo overlay for xterm.js; copy embedded in `app.js`.
**Local packages**: `packages/xterm-zerolag-input/` — local echo overlay for xterm.js; copy embedded in `app.js`. `packages/gesture-control/` (`codeman-gesture-control`) — hand-tracking overlay source; built to `src/web/public/gesture/gesture-codeman.js` via `npm run build:gesture` (see Frontend → Gesture control).
**Config**: `src/config/` — 10 files. Import from specific files, not barrel.
@@ -169,6 +171,8 @@ Frontend JS modules have `@fileoverview` with `@dependency`/`@loadorder` tags. L
**Gesture control** (the camera hand-tracking overlay) is **opt-in, default OFF**, under App Settings → Display → **Input** (`gestureControlEnabled`). `CODEMAN_GESTURE=1` makes the feature *available* on the instance (CSP widening + `/gesture/` assets) and sets `window.__codemanGestureAvailable` (the Input section only shows when set); the overlay bundle is injected by `renderIndexHtml` **only when the setting is enabled**, so that method is `async` and reads `settings.json` via `readSettings(true)` — the `true` forces a **fresh** read (bypassing the 2s `_settingsCache`), because a post-save reload happens within that TTL and the cached value would otherwise render the pre-toggle state. Toggling the setting reloads the page (the bundle is render-injected).
**Gesture-control source lives in-repo** at `packages/gesture-control/` (workspace package `codeman-gesture-control`, was the standalone `Ark0N/codeman-gesture-control` repo). The transport-agnostic core is `src/gesture/*` (MediaPipe GestureRecognizer → One-Euro-filtered cursor → pinch state machine); `src/codeman/entry.ts` is the Codeman *consumer* that maps grab/drag/drop onto real `.session-tab`/toolbar buttons and is the bundle entry. **Edit there, then run `npm run build:gesture`** (`scripts/build-gesture-bundle.mjs` → esbuild bundles `entry.ts`, MediaPipe JS included, into `src/web/public/gesture/gesture-codeman.js`) and **commit the regenerated bundle** — the committed bundle is what dev/`tsx` serves (no bundler at runtime), and `scripts/build.mjs` reruns the same step so prod always reflects current source. The MediaPipe **wasm + model** are NOT bundled — loaded at runtime from same-origin `/gesture/wasm` + `/gesture/gesture_recognizer.task`, fetched by `scripts/fetch-gesture-assets.mjs` (gitignored, see Gotchas). `entry.ts` mounts `window.__codemanGesture = new GestureBridge()` idempotently at module-eval. A standalone vite playground (`npm run dev` in the package — fake tabs, no Codeman) lets you iterate on gesture *feel* in isolation. ⚠️ Keep `MP_VERSION` in `fetch-gesture-assets.mjs` in sync with `@mediapipe/tasks-vision` in `packages/gesture-control/package.json`.
**Respawn presets**: `solo-work` (3s/60min), `subagent-workflow` (45s/240min), `team-lead` (90s/480min), `ralph-todo` (8s/480min), `overnight-autonomous` (10s/480min).
**Keyboard shortcuts**: Escape (close), Ctrl+? (help), Ctrl+W (kill), Ctrl+Tab (next), Alt+1-9 (switch tab), Ctrl+Shift+{/} (move tab left/right), Shift+Enter (newline), Ctrl+L (clear), Ctrl+Shift+R (restore size), Ctrl+Shift+V (voice input), Ctrl/Cmd +/- (font).
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@@ -1,12 +1,12 @@
{
"name": "aicodeman",
"version": "0.9.1",
"version": "0.9.2",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "aicodeman",
"version": "0.9.1",
"version": "0.9.2",
"hasInstallScript": true,
"license": "MIT",
"workspaces": [
@@ -1753,6 +1753,12 @@
"mediabunny": "^1.0.0"
}
},
"node_modules/@mediapipe/tasks-vision": {
"version": "0.10.21",
"resolved": "https://registry.npmjs.org/@mediapipe/tasks-vision/-/tasks-vision-0.10.21.tgz",
"integrity": "sha512-TuhKH+credq4zLksGbYrnvJ1aLIWMc5r0UHwzxzql4BHECJwIAoBR61ZrqwGOW6ZmSBIzU1t4VtKj8hbxFaKeA==",
"license": "Apache-2.0"
},
"node_modules/@module-federation/error-codes": {
"version": "0.22.0",
"resolved": "https://registry.npmjs.org/@module-federation/error-codes/-/error-codes-0.22.0.tgz",
@@ -5334,6 +5340,10 @@
"node": ">=12"
}
},
"node_modules/codeman-gesture-control": {
"resolved": "packages/gesture-control",
"link": true
},
"node_modules/color-convert": {
"version": "2.0.1",
"resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
@@ -12166,6 +12176,124 @@
"url": "https://github.com/sponsors/colinhacks"
}
},
"packages/gesture-control": {
"name": "codeman-gesture-control",
"version": "0.1.0",
"dependencies": {
"@mediapipe/tasks-vision": "0.10.21"
},
"devDependencies": {
"esbuild": "^0.27.3",
"typescript": "^5.5.4",
"vite": "^7.3.5"
}
},
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"resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
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"dev": true,
"license": "MIT",
"engines": {
"node": ">=12.0.0"
},
"peerDependencies": {
"picomatch": "^3 || ^4"
},
"peerDependenciesMeta": {
"picomatch": {
"optional": true
}
}
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"dev": true,
"license": "MIT",
"engines": {
"node": ">=12"
},
"funding": {
"url": "https://github.com/sponsors/jonschlinkert"
}
},
"packages/gesture-control/node_modules/vite": {
"version": "7.3.5",
"resolved": "https://registry.npmjs.org/vite/-/vite-7.3.5.tgz",
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"dev": true,
"license": "MIT",
"dependencies": {
"esbuild": "^0.27.0",
"fdir": "^6.5.0",
"picomatch": "^4.0.3",
"postcss": "^8.5.6",
"rollup": "^4.43.0",
"tinyglobby": "^0.2.15"
},
"bin": {
"vite": "bin/vite.js"
},
"engines": {
"node": "^20.19.0 || >=22.12.0"
},
"funding": {
"url": "https://github.com/vitejs/vite?sponsor=1"
},
"optionalDependencies": {
"fsevents": "~2.3.3"
},
"peerDependencies": {
"@types/node": "^20.19.0 || >=22.12.0",
"jiti": ">=1.21.0",
"less": "^4.0.0",
"lightningcss": "^1.21.0",
"sass": "^1.70.0",
"sass-embedded": "^1.70.0",
"stylus": ">=0.54.8",
"sugarss": "^5.0.0",
"terser": "^5.16.0",
"tsx": "^4.8.1",
"yaml": "^2.4.2"
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"terser": {
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"tsx": {
"optional": true
},
"yaml": {
"optional": true
}
}
},
"packages/xterm-zerolag-input": {
"version": "0.1.4",
"license": "MIT",
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@@ -1,6 +1,6 @@
{
"name": "aicodeman",
"version": "0.9.1",
"version": "0.9.2",
"description": "The missing control plane for AI coding agents - run 20 autonomous agents with real-time monitoring and session persistence",
"type": "module",
"main": "dist/index.js",
@@ -11,6 +11,7 @@
"scripts": {
"postinstall": "node scripts/postinstall.js",
"build": "node scripts/build.mjs",
"build:gesture": "node scripts/build-gesture-bundle.mjs",
"start": "NODE_COMPILE_CACHE=${HOME}/.codeman/compile-cache node dist/index.js",
"dev": "tsx src/index.ts web",
"web": "node dist/index.js web",
+6
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@@ -0,0 +1,6 @@
node_modules
dist
dist-codeman/
*.local
.vite
.DS_Store
+258
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@@ -0,0 +1,258 @@
# gesture-proto
A Jarvis-style hand-tracking input layer for the Codeman dashboard. Your webcam
sees your hands; you pinch-drag session tabs between columns. Runs entirely
in-browser — **the camera feed never leaves the machine.**
> **This build is pinch-drag only.** The discrete gesture commands (halt-all /
> approve / new-session) were built in Phase 4 but are **intentionally not wired
> up** — an open palm while reaching to pinch kept charging the hold-to-halt. The
> `GestureController` core still emits `command`/`haltProgress` for any future
> consumer; the demo just no longer listens.
This is a standalone prototype (own folder, fake tabs) so the input *feel* can
be validated on real hardware before integrating with Codeman. The canonical
spec is **[`docs/BUILD_PLAN.md`](./docs/BUILD_PLAN.md)** — read it before
continuing the build.
---
## Status: Phase 0–4 complete
| Phase | What | State |
|-------|------|-------|
| 0 | Vite+TS scaffold, mirrored webcam preview, start button | ✅ done |
| 1 | MediaPipe `GestureRecognizer` (VIDEO mode, CDN model+wasm), rAF loop, debug skeleton overlay, HUD | ✅ done |
| — | **Checkpoint: ≥25fps on real camera/lighting** | ✅ 60fps (iPhone 17 Pro / Continuity Camera) |
| 2 | One-Euro–filtered cursor + pinch detection (hysteresis) | ✅ done |
| 3 | Drag fake tabs across 3 columns (state machine) — go/no-go | ✅ done (two-handed) |
| 4 | Discrete gesture→command bus (👍 approve · ✌️ new-session · ✋-hold halt-all) + toast | ✅ built, ⛔ **unwired in the demo** (pinch-only) |
| 5 | Integrate `gesture/` into real Codeman (`src/codeman/entry.ts`) | ✅ **working at the desk** — see [Codeman integration](#codeman-integration) |
Also done beyond the original plan: **two-hand tracking** (drag two tabs at
once) and a **live camera picker** (front-facing iPhone 17 Pro by default; the
superwide / Desk View camera now works too — see the camera note below).
Also: **fullscreen mode** (toggle button — the board fills the display, so grab
targets get big).
**Phase 5 is live** in the real Codeman dashboard. The Codeman-side detach +
instance isolation + base gesture overlay are committed on `Ark0N/Codeman`
branch `beta/session-detach` (open as **PR #103**) — including this session's
gesture *improvements* (direct-detach, Run/Run Shell taps, self-hosted MediaPipe,
cache-bust), ported onto the PR in commit `eea84db` (CI green). See
[Codeman integration](#codeman-integration) below and the hand-off brief
[`../docs/CODEMAN_DETACH_BRIEF.md`](../docs/CODEMAN_DETACH_BRIEF.md).
**Multi-monitor mode — built & validated at the desk (2026-06-08).** Approach
**A+C** (see [`../docs/MULTIMONITOR_DESIGN.md`](../docs/MULTIMONITOR_DESIGN.md)):
(A) gesture "detach" now pops a session into a re-grabbable **in-page floating
panel** (an `<iframe src="/session/:id">`, not an OS window — so the hand keeps
control); (C) `scripts/span-codeman.sh` runs Codeman in a **single window spanned
across both monitors** (Brave-first; needs macOS "Displays have separate Spaces"
OFF + re-login), launchable one-click from a new **multi-monitor button** in
Codeman's header. Confirmed: a panel drags across the monitor seam. Still pending:
`getScreenDetails` screen-snapping (C-snap) and the re-dock gesture.
---
## Run it
```bash
cd gesture-proto
npm install
npm run dev
```
Open the URL Vite prints (http://localhost:5173). `getUserMedia` requires a
secure context — `localhost` qualifies, so the dev server is fine. Click
**Start camera**, allow the camera, hold a hand up. You should see each hand's
21-point skeleton, a cursor ring per hand (cyan = left, violet = right, green
while pinching), and a live HUD.
**Choosing a camera:** after Start, the dropdown lists every video device. On a
Mac with an iPhone nearby (Continuity Camera) you'll typically see the built-in
FaceTime cam, the **iPhone Camera** (main/wide lens), and a **Desk View Camera**
— the latter is driven by the iPhone's ultra-wide lens aimed down at the desk
(the overhead angle). Switching is live; no restart needed. The browser can't
select the ultra-wide lens directly, so Desk View is how you reach it. **The
Desk View / superwide camera now works with no issues and tracking is confirmed
on it** — earlier it was Safari-only and rendered stretched; that's resolved.
**Using it:** point at a tab (it highlights), **pinch** thumb+index to grab,
move to another Screen column, release to drop. Both hands work at once. **⛶
Fullscreen** makes the board fill the display (Esc exits). No open-hand gesture
commands in this build — it's pinch-drag only (see the note up top).
Other scripts: `npm run build` (tsc + vite build), `npm run preview`.
### Developing on the Mac mini, running on the MacBook
The prototype is *run/tested* on the MacBook (better for sitting at the desk
with the camera). To sync:
```bash
git pull # on the MacBook
cd gesture-proto && npm install && npm run dev
```
No machine-specific state is committed (`node_modules/`, `dist/`, and
`.claude/settings.local.json` are gitignored).
### Framerate note
The HUD fps turns **green at ≥ 25**, amber below. Confirmed **60fps** on the
iPhone 17 Pro (Continuity Camera). If it's ever low, improve **even, frontal
lighting on the hand zone** first — that matters more than the sensor.
---
## Codeman integration
Phase 5 ships a **separate consumer**, `src/codeman/entry.ts` (the demo +
`main.ts` are untouched — they stay as a desk-testing harness). It imports the
same unchanged `src/gesture/` core and binds its events to the **real** Codeman
dashboard. Build it standalone (MediaPipe inlined) with:
```bash
npm run build:codeman # esbuild → dist-codeman/gesture-codeman.js
```
Codeman serves that bundle at `/gesture/gesture-codeman.js` and injects it into
the dashboard **only when started with `CODEMAN_GESTURE=1`** (which also widens
its CSP for WebAssembly). Deploy = copy the bundle into Codeman's
`src/web/public/gesture/` and reload (static is served from disk).
**Gestures (all off one pinch, routed by what's under your fingertips):**
- **Fullscreen camera** by default — mirrored, dimmed, full-viewport so you see
your hands over the real tabs; the **⛶** button toggles a corner preview.
- **Grab → in-page floating panel** *(pivoted 2026-06-08 — replaced the old
OS-window detach)* — pinch a session tab, a ghost of it follows your hand, pull
it out of the strip (>70px) and release → the session pops into a **re-grabbable
in-page `.cg-float` panel** (an `<iframe src="/session/:id">`, 640×420) at the
drop point. Pinch the panel again to move it anywhere. It stays inside the
camera-owning page, so the hand keeps control (the old `window.app.detachSession`
`window.open` was a one-way trip). A small twitch-and-release cancels.
- **Run / Run Shell** — pinch over the **Run** (`#runBtn`) or **Run Shell**
(`.btn-shell`) toolbar button and release in place to fire it; drifting too
far first cancels the tap. The button list is `CLICK_SELECTOR` in `entry.ts`.
**Self-hosted MediaPipe.** The Codeman consumer loads the wasm runtime + the
`gesture_recognizer.task` model **same-origin** from `/gesture/` (via
`wasmBase`/`modelUrl` options), not the CDN — a browser content/ad blocker can
otherwise block the CDN and startup fails with `failed: {"isTrusted":true}`.
**Multi-monitor button.** Codeman's header has a **multi-monitor button** (it
replaced the notification bell) → `POST /api/system/span-displays` → spawns
`scripts/span-codeman.sh`, opening a fresh browser `--app` window spanned across
all displays so floating panels can cross the monitor seam (PR #103 `95b0035`).
**Caveats:** Codeman serves static with a 1-year **`immutable`** cache, so
`server.ts` `cacheBustAssets()` appends `?v=<mtime>` to **every** same-origin
`.js`/`.css` (and the gesture bundle), re-stat'd per render — without it an edited
module stays cached until a hard refresh (PR #103 `b5ea711`). The old OS-window
detach verb (kept only as a deliberate, non-default action) does `window.open`,
which a pinch can get popup-blocked — allow popups once if you ever wire it back.
---
## Layout
```
gesture-proto/
├── index.html # demo page: video, tab board, HUD, controls
├── docs/
│ └── BUILD_PLAN.md # canonical spec: goals, algorithms, phases, tuning
├── src/
│ ├── main.ts # wires GestureController -> demo UI (board, HUD, camera, fullscreen)
│ ├── gesture/
│ │ ├── GestureController.ts # camera + recognizer + loop + per-hand state + event bus
│ │ ├── OneEuroFilter.ts # per-axis cursor smoothing
│ │ ├── pinch.ts # pinch distance + hysteresis detector
│ │ ├── commands.ts # debounced gesture→command bus (Phase 4)
│ │ ├── landmarks.ts # landmark indices, connections, helpers
│ │ └── types.ts # event payload types + config (full API surface)
│ ├── demo/
│ │ ├── overlay.ts # draws the hand skeleton + per-hand cursors
│ │ └── tabs.ts # the 3-column board: hit-testing + drag mechanics
│ └── codeman/
│ └── entry.ts # Phase 5 Codeman consumer (real tabs + Run/Run Shell);
│ # esbuild-bundled by `npm run build:codeman`
```
---
## `GestureController` API
Transport-agnostic: it owns the camera, recognizer, per-hand smoothing, pinch
state machine, and gesture→command bus, and emits **coordinate-only** events. It
knows nothing about tabs or the DOM — hit-testing lives in the consumer (the
demo's `tabs.ts`, later Codeman). Integration (Phase 5) is just subscribing and
calling Codeman's existing tab-move / command functions.
```ts
const gc = new GestureController({
video: videoEl,
surface: stageEl, // normalized coords map against this element's rect
numHands: 2,
pinchOn: 0.35, pinchOff: 0.5, // pinch hysteresis (fractions of hand size)
minCutoff: 1.0, beta: 0.01, // One-Euro cursor smoothing
palmHoldMs: 1000, // Open_Palm hold before halt-all fires
deviceId: "", // specific camera; "" = default user-facing
});
// Drag events — surface pixels (X already mirrored), with a per-hand id.
gc.on("grab", ({ hand, x, y }) => {}); // pinch closed → start drag
gc.on("drag", ({ hand, x, y }) => {}); // moving while pinched (per frame)
gc.on("drop", ({ hand, x, y }) => {}); // released (or hand vanished mid-pinch)
// Discrete commands: "halt-all" | "approve" | "new-session".
// Still emitted by the controller, but THIS build's demo does not subscribe
// (pinch-only). Wire these up in Codeman (Phase 5) or re-enable in the demo.
gc.on("command", ({ name }) => {});
// Per-frame snapshot for HUD / hover highlighting / debug overlay.
// `haltProgress` (0–1 Open_Palm charge) is also still emitted but unused here.
gc.on("status", ({ fps, hands, haltProgress }) => {});
// hands: { handedness, cursor:{x,y}/*normalized*/, pinchDist, pinching, gesture }[]
gc.on("results", ({ result, timestampMs }) => {}); // raw recognizer result
await gc.start(); // requests camera, loads model
await gc.useCamera(deviceId); // switch camera live
await gc.listCameras(); // enumerate video inputs
gc.stop();
```
All events are live. Hover highlighting is derived from the `status` snapshot
(not a dedicated event), since only the consumer can hit-test against its tabs.
Full types in [`src/gesture/types.ts`](./src/gesture/types.ts).
---
## Tuning defaults (start here, then adjust by feel)
- **One-Euro filter:** `minCutoff ≈ 1.0`, `beta ≈ 0.01`. Raise `beta` if drag
lags during fast moves; lower `minCutoff` if it jitters when still.
- **Pinch:** `PINCH_ON 0.35`, `PINCH_OFF 0.5` (fractions of hand-size reference
distance, wrist→middle-MCP). Two thresholds = hysteresis = no flicker.
- **Confidence:** detection/tracking ≈ 0.6. Lower if quick gestures get missed,
raise if you get false hands.
- **Camera:** target 30–60fps, even frontal lighting on the hand zone.
---
## Design notes
- **Standalone first.** Fake tabs let us validate feel before touching Codeman.
- **Main thread first.** Inference runs on the main thread (60fps, no stutter);
a Web Worker stays an optional optimization only if the UI ever stutters.
- **Two hands** (`numHands: 2`). Each hand keeps its own cursor + pinch state,
keyed by handedness so filters don't swap when MediaPipe reorders the hands.
- **Camera angle: front-facing default; superwide now usable too** — iPhone 17
Pro main lens via Continuity Camera, pointing / pinch-to-grab grammar. The
superwide / Desk View (overhead, ultra-wide) camera now works with no issues
and tracking is confirmed on it; the earlier Safari-only / stretched blocker is
resolved. The in-app picker switches cameras live.
- **Transport-agnostic controller.** It emits coordinate-only `grab`/`drag`/
`drop` + `command`; the consumer hit-tests. So Phase 5 only swaps the demo's
`tabs.ts` for Codeman wiring — the controller is untouched.
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# Codeman Gesture Control — Prototype Build Plan
> Canonical spec for this project. A Jarvis-style hand-tracking input layer for
> the Codeman dashboard. Webcam sees your hands; you pinch-drag session tabs
> between Screen columns and fire discrete gesture commands. Runs entirely
> in-browser, camera feed never leaves the machine.
Build it as a **standalone prototype first** (its own folder, fake tabs) so the
input feel can be validated on real hardware before any integration with
Codeman's existing drag/command code.
---
## Goal & success criteria
Build a `GestureController` module + a self-contained demo page that:
1. Opens the webcam and runs MediaPipe Gesture Recognizer at ~30fps.
2. Emits a smoothed cursor position and a `pinch` state (grab/release) from hand landmarks.
3. Lets you **drag fake tabs between columns by pinching**, dropping on release.
4. Fires **discrete gesture commands** (open palm, thumbs up, victory) onto an event bus.
5. Feels responsive — drag lag is not perceptible, jitter is filtered out.
**Done when:** you can sit at your desk, pinch a tab, move it to another column,
release, and it lands — reliably, without visible jitter, with the camera
mounted at your chosen angle.
---
## Tech stack
- **MediaPipe Tasks Vision** (`@mediapipe/tasks-vision`) — `GestureRecognizer` in `VIDEO` running mode, `numHands: 1` for v1 (add 2 later). Loads the prebuilt `gesture_recognizer.task` model + WASM from CDN.
- **Vanilla TS + Vite** for the prototype (no framework needed; keep it portable so the module drops into Codeman regardless of its stack). If Codeman is React, the module stays framework-agnostic and you wrap it in a hook at integration time.
- **One-Euro filter** for cursor smoothing — implement it directly, it's ~40 lines and is the correct tool for noisy interactive landmark streams (low lag at speed, heavy smoothing when still).
- **Web Worker** for inference is a **Phase 4** optimization — do NOT start there. Get it working on the main thread first; only move to a worker if the dashboard UI stutters.
---
## File structure
```
gesture-proto/
├── index.html # demo page: video preview + columns of fake tabs
├── package.json
├── vite.config.ts
├── src/
│ ├── main.ts # wires GestureController -> demo UI
│ ├── gesture/
│ │ ├── GestureController.ts # core: camera + recognizer + state machine + events
│ │ ├── OneEuroFilter.ts # cursor smoothing
│ │ ├── pinch.ts # pinch detection w/ hysteresis
│ │ ├── landmarks.ts # landmark index constants + helpers
│ │ └── types.ts # event payload types, config
│ └── demo/
│ ├── tabs.ts # fake tab/column model + render
│ └── overlay.ts # draws hand skeleton + cursor dot over video (debug)
└── README.md
```
---
## Core algorithms (the parts that decide whether it feels good)
### 1. Cursor from landmarks
The drag cursor is the **midpoint of thumb tip (landmark 4) and index tip (landmark 8)**, in normalized [0,1] coords from MediaPipe.
- **Mirror X** (`x = 1 - x`) — the webcam image is flipped relative to the user.
- Map normalized → screen pixels against the dashboard's bounding rect.
- Run the resulting (x, y) through **two independent One-Euro filters** (one per axis) before using it. Raw landmarks jitter by several pixels even when the hand is still; this is the single most important quality step.
### 2. Pinch detection with hysteresis
Compute euclidean distance between landmark 4 and landmark 8. **Normalize by hand size** (e.g. distance wrist→middle-finger-MCP, landmarks 0→9) so the threshold is robust to how close the hand is to the camera.
- Use **two thresholds, not one** (hysteresis): enter pinch below `PINCH_ON` (e.g. 0.35 of hand size), exit only above `PINCH_OFF` (e.g. 0.5). This stops flickering between grab/release at the boundary — critical for not "dropping" a tab mid-drag.
- Require the pinch state to persist N frames (e.g. 2–3) before firing, to reject single-frame noise.
### 3. State machine
```
IDLE ──hand detected──> HOVER ──pinch on──> GRABBED ──pinch off──> (drop) ──> HOVER
^ | |
└────hand lost───────────┴────────────────hand lost────────────────────────┘
```
- `HOVER`: cursor moves, highlights the tab/column under it (hit-test).
- `GRABBED`: the grabbed tab follows the cursor; emit `drag` events.
- On `pinch off` in GRABBED: hit-test cursor against drop columns, emit `drop {tabId, targetColumnId}` or `dropCancelled` if outside any column.
### 4. Discrete gestures → command bus
From `result.gestures[0].categoryName`, debounced (fire once per gesture entry, not every frame while held):
- `Open_Palm` held ~1s → `command: "halt-all"` (dead-man's-switch — pauses every session; genuinely useful for autonomous loops).
- `Thumb_Up` → `command: "approve"`.
- `Victory` → `command: "new-session"`.
- Map these to the SAME command names your voice layer already dispatches, so both input sources converge on one dispatcher.
---
## GestureController public API (target shape)
```ts
const gc = new GestureController({
video: videoEl,
surface: dashboardEl, // coords mapped against this element's rect
numHands: 1,
pinchOn: 0.35, pinchOff: 0.5,
palmHoldMs: 1000,
});
gc.on("hover", ({ x, y, targetId }) => {...});
gc.on("grab", ({ x, y }) => {...});
gc.on("drag", ({ x, y }) => {...}); // throttled to frame rate
gc.on("drop", ({ targetColumnId }) => {...});
gc.on("command",({ name }) => {...}); // halt-all | approve | new-session
gc.on("status", ({ fps, handPresent, pinchDist }) => {...}); // debug HUD
await gc.start(); // requests camera, loads model
gc.stop();
```
Keep it **transport-agnostic**: it emits semantic events, it does NOT know about
Codeman's DOM. Integration is just subscribing to these events and calling
Codeman's existing tab-move / command functions.
---
## Phased build (each phase is independently testable — stop and feel it before moving on)
**Phase 0 — Scaffold & camera (½ day)**
Vite + TS project. `index.html` with a mirrored `<video>` and a "start" button (camera must be a user gesture). Confirm `getUserMedia` works and you see yourself. Must be served over http(s), not `file://`.
**Phase 1 — Recognizer + debug overlay (½ day)**
Load `GestureRecognizer` (`VIDEO` mode, CDN model+wasm). Run `recognizeForVideo(video, performance.now())` in a `requestAnimationFrame` loop. Draw the 21-point skeleton + an FPS counter on a canvas over the video. **Checkpoint: confirm you're getting ≥25fps on your actual camera/lighting setup.** Tune lighting here.
**Phase 2 — Cursor + pinch (1 day)**
Implement `OneEuroFilter` and `pinch.ts`. Render a cursor dot driven by the filtered thumb/index midpoint. Show live pinch distance in the HUD and a color change on grab. **Checkpoint: the dot is steady when your hand is still, and pinch grab/release is crisp with no flicker.** Tune filter constants (`minCutoff`, `beta`) and pinch thresholds here — this is where the "feel" is won or lost.
**Phase 3 — Drag the fake tabs (1 day)**
Build `tabs.ts`: 3 columns of draggable fake "sessions." Wire the state machine: hover-highlight, grab, drag-follow, drop-with-hit-test. **Checkpoint: you can move a tab across columns reliably 10/10 times.** This is the core demo and the real go/no-go for the whole idea.
**Phase 4 — Discrete commands + polish (1 day)**
Add gesture→command bus with debouncing and the 1s open-palm halt. Add an on-screen toast when a command fires. Optional: move inference to a Web Worker if the UI stutters; add second-hand support.
**Phase 5 — Codeman integration (✅ working, 2026-06-07)**
Drop `gesture/` into Codeman via a new consumer `src/codeman/entry.ts` (the core is unchanged; the demo's `main.ts` is *not* the integration point). It binds `grab`/`drag`/`drop` to real `.session-tab`s (grab-to-detach → `app.detachSession`) and pinch-taps the Run / Run Shell toolbar buttons. Runs in Codeman behind `CODEMAN_GESTURE=1`. See the detailed status under "Implementation status" below.
> **Prerequisite (decided 2026-06-06, ✅ done 2026-06-07): Codeman tab-detach first.**
> Codeman needed a **tab-detach / undock** feature — a session pops out into its
> own browser window — *before* gesture wiring, because gestures can only drag DOM
> *within* the one page that owns the camera (you can't drag a node across isolated
> tabs/OS windows). So undock is a Codeman session-placement op the gesture `drop`
> *triggers*. **Shipped** as `app.detachSession(id)` → `/session/:id` solo window +
> BroadcastChannel sync + re-dock on close (the gesture layer calls it directly).
> Per-monitor placement via `getScreenDetails` stays in the multi-monitor backlog.
---
## Tuning defaults to start from (then adjust by feel)
- One-Euro: `minCutoff ≈ 1.0`, `beta ≈ 0.01` (raise `beta` if drag lags during fast moves; lower `minCutoff` if it's jittery when still).
- Pinch: `PINCH_ON 0.35`, `PINCH_OFF 0.5` (fractions of hand-size reference distance).
- `min_detection_confidence` / `min_tracking_confidence` ≈ 0.6; lower if quick gestures get missed, raise if you get false hands.
- Camera: target 30–60fps, even frontal lighting on the hand zone (matters more than the sensor).
---
## Hardware note
Prototype on the **MacBook M1 Max built-in cam** for zero-friction Phase 0–3.
For the real setup, switch to **iPhone via Continuity Camera** mounted at desk
level aimed at your hand-gesture zone — best sensor + best angle. Decide
front-facing (pointing/pinch-to-grab) vs overhead (swipe/drag-on-a-plane) mount
before Phase 3, since it slightly changes the gesture grammar.
---
## Implementation status (kept current)
- ✅ Phase 0, ✅ Phase 1 — see top-level `CLAUDE.md` and `gesture-proto/README.md`.
- ✅ Phase 1 fps checkpoint — 60fps on MacBook + iPhone 17 Pro (Continuity Camera).
- ✅ Phase 2 — `OneEuroFilter.ts` + `pinch.ts`: filtered cursor dot + pinch hysteresis. Cursor + `pinchDist` + `pinching` on the `status` event; HUD shows pinch distance, cursor ring turns green on grab.
- ✅ Phase 3 — `demo/tabs.ts`: 3 Screen columns of draggable session tabs. Controller owns the per-hand pinch state machine and emits `grab`/`drag`/`drop` in surface pixels (with a `hand` id); the demo hit-tests and moves tabs. Two-handed (drag two tabs at once); drop-on-vanish releases a tab if a pinched hand leaves frame.
- ✅ Beyond plan — two-hand tracking (`numHands: 2`, filters keyed by handedness) and a live camera picker.
- ✅ Camera (2026-06-06) — front-facing iPhone 17 Pro main lens (Chrome) is the default. **The superwide / Desk View (ultra-wide, overhead) camera now works with no issues and tracking is confirmed on it** — the earlier "Safari-only / stretched / unusable" finding is superseded. Pick either via the in-app camera picker.
- ✅ Phase 4 (built) — `commands.ts`: debounced gesture→command bus. `Thumb_Up`→approve, `Victory`→new-session (edge-triggered, fire once per entry), `Open_Palm` held `palmHoldMs`→halt-all (dead-man's-switch) with a 0–1 `haltProgress` charge surfaced on `status`. Commands ignore a pinching (mid-drag) hand.
- ⛔ **Phase 4 unwired in the demo (2026-06-06).** User wants pinch-drag only — an open palm while reaching to pinch kept charging the hold-to-halt. `main.ts` no longer subscribes to `command`/`haltProgress` and the command/charge toasts are gone. The `GestureController` core is untouched and still emits both events, so Phase 5 (or a re-enabled demo) can pick them up unchanged.
- 🐛 **Drag-position fix (2026-06-06).** A `.dragging` tab is `position: absolute`; the `.column`s establish a containing block via `backdrop-filter`, so board-local left/top were offset by the column's own position — tabs in the middle/right columns flew to the right on grab. Fix: `tabs.ts` reparents the floating tab onto `#board` (no filter/transform) for the drag, so the coordinates `moveTo` computes match the containing block.
- ✅ **Phase 5 — WORKING at the desk (2026-06-07).** Prerequisite cleared: Codeman tab-detach/undock works in the runtime (`app.detachSession(id)` is the idempotent hook). The gesture overlay runs live in the real Codeman dashboard on `:5000` and was confirmed by the user (normal tab): fullscreen cam + hand/cursor tracking, undock-by-pinch, and Run/Run Shell taps.
- **Integration shape: in-page overlay, built into Codeman beta.** The gesture `core` (`src/gesture/`) ships **unchanged**; the consumer is `src/codeman/entry.ts`, esbuild-bundled (`npm run build:codeman`) and served by Codeman at `/gesture/gesture-codeman.js`. A full-viewport, click-through overlay maps coords straight to `elementFromPoint`.
- **Gestures (routed by what the pinch lands on):** (a) **grab → in-page floating panel** *(⚠️ pivoted 2026-06-08 — was grab-to-detach)*: pinch a `.session-tab`, a ghost clone follows the hand, pull >`DETACH_PULL_PX` (70) and release → `floatSession(id, x, y)` spawns a re-grabbable `.cg-float` iframe of `/session/:id` (640×420). This **replaced** `window.app.detachSession(id)` (an OS window is a sealed box the hand can't move again — a one-way trip); the float stays in-page so the hand keeps control. See `../../docs/MULTIMONITOR_DESIGN.md`. (b) **Run / Run Shell taps** — pinch over `#runBtn`→`app.run()` / `.btn-shell`→`app.runShell()` and release in place; drift >`TAP_CANCEL_PX` (45) cancels. `CLICK_SELECTOR` is the extensible list. (c) **Fullscreen dimmed cam** by default, **⛶** toggles corner PiP.
- **Self-hosted MediaPipe (no CDN).** `entry.ts` passes `wasmBase: "/gesture/wasm"` + `modelUrl: "/gesture/gesture_recognizer.task"`; Codeman serves them same-origin. The CDN path failed in the normal browser tab (content/ad blocker blocking `jsdelivr`/`googleapis`) → surfaced as `failed: {"isTrusted":true}` once `entry.ts` learned to report non-Error throws. Core also gained a GPU→CPU delegate fallback.
- **Gated by `CODEMAN_GESTURE=1` (OFF by default).** Under the flag Codeman injects the module script (dashboard only, not `/session/:id` solo popups), cache-busts it with `?v=<mtime>` (static is `max-age=1y`), and widens CSP (`'wasm-unsafe-eval'` + `worker-src 'self' blob:`; same-origin assets now covered by `'self'`). Flag off ⇒ Codeman HTML/CSP unchanged.
- **Codeman-side / version control:** the detach + instance isolation + base gesture overlay are committed on `Ark0N/Codeman` branch `beta/session-detach`, open as **PR #103** (tip `afea6d6`; `ceca853` after I fixed its `auth.ts` format:check → CI green). Gotcha: the local prod clone `~/.codeman/app` tracks only `master`, so the branch is hidden until `git fetch origin beta/session-detach` (this briefly misled me into a bogus local reconstruction `03b31b8`, since deleted). The session improvements — direct-detach via `window.app.detachSession`, Run/Run Shell pinch-taps, self-hosted MediaPipe (`/gesture/wasm` + `.task`), and the `server.ts` mtime cache-bust — were **ported onto PR #103** in commit `eea84db` (CI green); their source is `Ark0N/codeman-gesture-control` (`src/codeman/entry.ts`).
- **Commits (gesture-proto):** `ddf9cda` (consumer: detach/cam/errors) → `2dd97da` (detach direct) → `21ef793` (Run/Run Shell taps) → `e055b79` (self-host MediaPipe).
- **Next:** tune feel; optional in-strip reorder (deferred — user chose detach-only) and more buttons (Stop). Discrete `command` events remain available but unwired (pinch-only). Hand-off brief: `../docs/CODEMAN_DETACH_BRIEF.md`.
## Backlog (requested, for later)
- ✅ **Fullscreen mode** — done. Toggle button fullscreens the `#stage`;
`:fullscreen` CSS fills the viewport and the coord mapping adapts since it
reads the stage rect every frame.
- ✅ **Multi-monitor mode — A+C BUILT & validated at the desk (2026-06-08).** The
eventual real goal (fling a Codeman session onto an external display by gesture)
is reached. **Design → [`../../docs/MULTIMONITOR_DESIGN.md`](../../docs/MULTIMONITOR_DESIGN.md)**,
approach **A+C**:
- **A — in-page floating panels** (`581fcf9`, `3e0447a`): `entry.ts`
`floatSession(id, x, y)` pops a tab into a re-grabbable `.cg-float` iframe of
`/session/:id` (640×420) instead of `window.app.detachSession`. The session
stays in the camera-owning page's DOM, so the hand keeps control — fixing the
one-way-trip flaw of OS-window detach.
- **C-span — spanned window** (`063fd8f`, `59946b8`): `scripts/span-codeman.sh`
launches a Brave-first (`BROWSER=` override) `--app` window sized to the
display union; prereq macOS "Displays have separate Spaces" OFF + re-login.
One-click via the **Codeman header button** → `POST /api/system/span-displays`
(PR #103 `95b0035`). **Validated:** one window spans both monitors and a panel
drags across the seam.
- **C-snap** (`getScreenDetails` snapping + seam dead-band) and the **re-dock**
gesture/zone are **still pending** — not needed for basic cross-seam dragging.
- **Concurrent-rendering question** was RESOLVED first: Codeman already mounts
live terminals into floating panels (teammate terminals, log-viewer SSE
windows, the iframe-able `/session/:id` solo route), so the live float needed
no new Codeman rendering.
Note: the public event surface evolved from the original API sketch. The
controller stays transport-agnostic but emits coordinate-only `grab`/`drag`/
`drop` (hit-testing lives in the consumer, since only it knows the DOM/columns).
`hover`/`dropCancelled`/`targetId` were dropped; hover highlighting is derived
from the `status` snapshot instead.
@@ -0,0 +1,80 @@
# Feature brief: Session tab detach / undock (for Codeman)
> ✅ **SHIPPED — on GitHub as PR #103 (open).** Branch `beta/session-detach` on
> `Ark0N/Codeman` (base `master`): "feat(web): session detach/undock + beta
> instance isolation (port 5000)", containing detach/undock + instance isolation
> + the base gesture overlay (commit `afea6d6`). `app.detachSession(id)` in
> `app.js` opens `/session/:id` as a solo window (another live client of the same
> session), tracks it (badge + `BroadcastChannel` sync + re-dock on close), and is
> the single idempotent entry point both the on-tab ⧉ icon and the gesture layer
> call. PTY fan-out (the open question below) resolved **yes**, so no streaming
> work was needed. CI green after I fixed a prettier format:check on `auth.ts`
> (commit `ceca853`).
>
> ⚠️ **Note:** the local **prod** clone `~/.codeman/app` only tracks `master`, so
> the PR branch is invisible there until `git fetch origin beta/session-detach`.
> (Earlier today I briefly mis-concluded the PR didn't exist and made a bogus
> local reconstruction — deleted. The PR was real all along.) The gesture-side
> *improvements* from this session — direct-detach, Run/Run Shell pinch-taps,
> self-hosted MediaPipe, `server.ts` cache-bust — were **ported onto PR #103**
> (commit `eea84db`, CI green); their source is `Ark0N/codeman-gesture-control`.
> The rest of this doc is the original hand-off brief, kept for history.
> Hand-off brief for **Codeman** to refine and implement **on a beta branch**.
> Authored from the gesture-control project, which needs this as a prerequisite.
> Codeman is "aicodeman": a Fastify + WebSocket server streaming xterm.js
> terminal (tmux) sessions to a web dashboard.
## Goal
Let a session "tab" pop out of the main dashboard into its **own browser
window** (and back). Each detached window shows just that one session's
terminal, fully live. This is a standalone UX win *and* a prerequisite for
gesture control later (a hand-gesture "drop" will eventually trigger
detach/relocate — but that's a separate project; **this feature is plain UI
buttons only**).
## Core approach (refine as needed)
- Add a **"Detach" control** on each tab. It opens a new browser window
(`window.open`) pointing at a **single-session view** — ideally a real route
like `/session/:id` so the popup just loads a URL and attaches like a normal
client.
- The detached window runs its **own xterm.js instance connected to the same
session's WebSocket**, so it's live, not a screenshot.
- Keep the dashboard and detached windows **in sync** (session list, titles,
alive/dead state, focus) — via the existing events channel, or a
`BroadcastChannel` if simpler.
- Support **re-dock** (close popup → tab returns to the dashboard) and handle the
popup being closed/refreshed gracefully.
## The one critical question to resolve first (in Codeman's own code)
Can the server currently **fan out one session's PTY/tmux output to multiple
concurrent WebSocket clients**, or is it single-consumer? A detached window is a
*second* viewer of the same session. If it's single-consumer today, that's the
main change: make the pty→socket stream **broadcast to N subscribers** (and merge
input) so dashboard + popup can both watch/type. This likely matters more than
the UI work.
## Other decisions for Codeman
- Per-session route (`/session/:id`) vs. a single-page popup that's told which id
to show.
- Multi-monitor placement later via the Window Management API
(`getScreenDetails`) — **out of scope now**, just don't design against it.
- Auth/cookie sharing so a popup window authenticates the same as the dashboard.
## Constraints
- Implement on a **beta branch**, not `main`.
- The gesture-control side keeps a **read-only** copy of Codeman (its `.git`
removed); the live `Ark0N/Codeman` repo is **not** touched from here. Codeman
implements this itself.
## Why this is sequenced before gesture wiring
Gestures can only drag DOM **within the single page that owns the camera**; you
cannot drag a node across isolated browser tabs / OS windows. So undock must be a
**Codeman session-placement operation** that a gesture `drop` later *triggers* —
not something the gesture layer does. Detach first; wire gestures to it after.
@@ -0,0 +1,260 @@
# Multi-monitor gesture design — in-page panels + spanned window (A + C)
**Status:** **A + C-span BUILT & validated at the desk (2026-06-08).** C-snap
(`getScreenDetails` snapping) still pending. Decided + built 2026-06-08.
**Supersedes** the OS-window detach as the *gesture* verb (see "Why detach
broke movability") — *now actually replaced in `entry.ts`, not just planned.*
**Companion docs:** `CODEMAN_DETACH_BRIEF.md` (the original window.open detach),
`../gesture-proto/docs/BUILD_PLAN.md` (canonical build spec, Phase 5).
> ## Implementation status (2026-06-08)
> - ✅ **A — in-page floating panels.** `entry.ts` `floatSession(id, x, y)` spawns
> a `.cg-float` div with an `<iframe src="/session/:id">` (640×420) at the drop
> point; panels are re-grabbable. Replaces `window.app.detachSession`. Commits
> `581fcf9`, `3e0447a`.
> - ✅ **C-span — spanned window.** `scripts/span-codeman.sh` (Brave-first;
> `BROWSER=` override) launches a `--app` window sized to the display union.
> Commits `063fd8f`, `59946b8`. **Validated at the desk:** one window spans
> both monitors (3432×1080) and a panel drags across the seam.
> - ✅ **Launch entry point in Codeman.** A header "multi-monitor" button (replaces
> the notification bell) → `POST /api/system/span-displays` → spawns the span
> script. Bundled `span-codeman.sh` into Codeman's repo. **PR #103** `95b0035`.
> - ✅ **Cache-bust** all same-origin module scripts/CSS (`renderIndexHtml` →
> `cacheBustAssets`), so frontend edits show on a normal reload. PR #103 `b5ea711`.
> - ⏳ **C-snap** (`getScreenDetails` snapping + seam dead-band) — not built; not
> required for basic cross-seam dragging. Also pending: the re-dock gesture/zone.
> - **Known caveats from the desk run:** dead band on a taller/offset external
> display (inherent to one spanning rect); superwide lens not selectable in the
> fresh span-window browser profile; 3-monitor works unchanged but dead-space +
> cursor-sensitivity caveats grow.
---
## Goal
Pinch a Codeman session, drag it anywhere — including **across a second
physical monitor** — drop it, and have it stay where you put it and stay
grabbable again. The "fling a session onto the external display by gesture"
end-goal from the BUILD_PLAN backlog, made real **without losing the ability to
move a session after you've placed it.**
## The root constraint (why this design, not the others)
The hand only exists in **the one page that owns the camera**. Hand tracking,
the cursor, and `document.elementFromPoint` hit-testing all live in that single
document. **An OS window created by `window.open` is a sealed box that page
cannot reach into** — no shared DOM, no shared cursor.
> **Why detach broke movability.** Today `entry.ts` → `detach(id)` calls
> `window.app.detachSession(id)`, which `window.open`s the session into its own
> OS window. The instant it leaves the camera-owning page, the hand can never
> touch it again. Detach-by-pinch *works*, but it's a one-way trip.
**Rule:** anything you want to keep gesture-movable must stay inside **one
page's DOM.** This design honors that with two composed pieces:
- **A — In-page floating panels.** "Detach" pops a session into a free-floating,
absolutely-positioned element *in the same page* (not an OS window), so the
hand keeps control forever.
- **C — One window spanning both monitors.** Run Codeman in a single window
stretched across both physical displays, so "drag across monitors" is just
"drag across the page," and the second monitor's pixels are actually used.
Option **B** (one OS window per monitor + a distributed BroadcastChannel cursor
protocol + cross-window session hand-off) was considered and deferred: it's the
only path to *independent* per-monitor OS windows, but it's a much larger build
and reintroduces the cross-window wall this design exists to avoid.
---
## Part A — In-page floating panels
### Codeman already has the primitive
`panels-ui.js` has a `.detached` "floating window": an absolutely-positioned
`<div>` with `panel.style.top/left/width/height` and a drag handler
(`setupMonitorDrag`) — **all in-page, no `window.open`.** The session-tab detach
simply picked the wrong primitive (the OS-window one). Part A reuses the
in-page one.
### Concurrent session rendering — RESOLVED (2026-06-08): live floats are feasible now
The main *dashboard view* renders **one active session at a time** (a single
shared `this.terminal` opened into `#terminalContainer` in `terminal-ui.js:26`,
swapped by `selectSession()`). But the page is **not** limited to one terminal —
the PR #103 branch already ships **three independent in-page concurrent
floating-content subsystems** we can reuse, so a live floating panel per session
needs **no new Codeman rendering architecture**:
1. **Teammate terminals** (`panels-ui.js` `teammateTerminals` Map +
`subagent-windows.js`). A `Map` of **concurrent live `new Terminal()`
instances**, each `terminal.open(body)`'d into a floating panel, bound to a
`sessionId` + tmux `paneTarget`, **seeded via REST** buffer fetch
(`/api/sessions/:id/teammate-pane-buffer/:pane`), **input via REST**
(`/api/sessions/:id/teammate-pane-input`), with lazy-mount (`_lazyPaneTarget`)
and `dispose()` cleanup. *This is option 2 already built and shipping.*
2. **Log-viewer windows** (`panels-ui.js:2632`). Concurrent draggable floating
windows, each with its own `EventSource` **SSE stream** and lifecycle map —
proof of the generic "floating window + independent per-window stream"
pattern.
3. **`/session/:id` solo route** (`server.ts:573`, `renderIndexHtml(soloId)`,
`text/event-stream` at `:633`). A full **standalone live session page** —
**iframe-able** — reusing the exact multi-client fan-out detach already
depends on. Solo mode deliberately **omits** the gesture overlay
(`server.ts:1010-1014`), so there's no nested-overlay problem.
**The PTY multi-viewer fan-out is confirmed** (the brief's open "yes"): a session
is addressable by multiple concurrent clients — the solo route, the teammate
REST endpoints, and the on-tab pop-out all view the same live session.
**Resolution:** skip the static-preview fallback. Build live floats directly,
ranked by new-code cost:
- **Primary — iframe the solo route.** `floatPanel(id)` =
`<div class="cg-float" data-id><iframe src="/session/:id"></iframe></div>`.
The iframe is a complete live session view (its own terminal + stream client);
the gesture layer moves the **div** and the iframe rides along. Lowest new
code; reuses proven fan-out; no terminal wiring. Trade-off: a full app shell
per float (heavier — fine for a few, watch memory at many).
- **Richer alt — native teammate-style panel.** Mount a `new Terminal()` in the
float body, seed via the session buffer endpoint, feed via the teammate
stream. Native (no iframe), lighter per-float, same-document. Use if the
iframe feels heavy or you want tighter integration.
Either way the hand only **places** the float; typing into it uses a keyboard
(focus the iframe / native terminal) — consistent with "gesture places,
keyboard types."
### Gesture grammar (replaces the current detach path in `entry.ts`)
The grab/drag/drop plumbing already exists; only the **drop action** changes.
- **Grab** a `.session-tab[data-id]` (unchanged: `onGrab`, ghost-follow).
- **Pull** past `DETACH_PULL_PX` to arm (unchanged: `grab.armed`).
- **Drop while armed** → **no longer** `window.app.detachSession`. Instead spawn
an **in-page floating panel** for that session id at the drop point. New
method `floatPanel(id, x, y)` replacing `detach(id)`.
- **Re-grab** a floating panel (new `PANEL_SELECTOR`, e.g. `.cg-float[data-id]`)
→ move it; drop anywhere → it stays. This is the capability detach lost.
- **Drop a panel back over the tab strip** (or a dock zone) → **re-dock**
(remove the float; session returns to a plain tab). Mirrors the `.detached` →
attach toggle Codeman already has.
- **Keep `window.open` detach as a separate, deliberate verb** — e.g. a button,
or a distinct "throw up and off-screen" gesture — for intentionally parking a
session in its own OS window. It is *not* the default pinch action anymore.
### `entry.ts` change surface
- New state: `floats: Map<string, FloatingPanel>` (id → element + position),
parallel to the existing `grabs`/`taps` maps.
- `onGrab`: extend hit-testing to also match `PANEL_SELECTOR`, so an existing
float can be re-grabbed (priority: panel over tab when overlapping).
- `onDrop`: replace `if (grab.armed) this.detach(grab.id)` with
`this.floatPanel(...)`; add the panel re-dock branch.
- `floatPanel(id, x, y)`: create/show the in-page panel (Part A option 1/2),
position it absolutely at the drop point. Idempotent per id (re-grab moves the
existing one, never duplicates).
- Coordinate mapping is **already viewport-pixel based** (the click-through
surface maps cursor → viewport px), so it needs **no change** for spanning —
see Part C.
---
## Part C — One window spanning both monitors
Once the Codeman window physically covers both displays, Part A's panels drag
across the seam for free, because the gesture cursor is already in viewport
pixels and the viewport now spans both monitors.
### macOS setup (operational, near-zero code)
1. **System Settings → Desktop & Dock → uncheck "Displays have separate
Spaces."** (Requires a logout/login.) This is what lets a single window
straddle two physical displays.
2. Run Codeman **maximized, not fullscreen.** Browser fullscreen is *per
display* and will **not** span — use a maximized/borderless window dragged to
cover both monitors. (A kiosk/`--app` Chrome window sized to the union rect is
the cleanest.) **Automated by `scripts/span-codeman.sh`** — it reads the
display-union rect (Finder desktop bounds) and launches a **Brave-first**
Chromium-family `--app` window sized to it (fresh per-browser profile so the
geometry flags are honored; `BROWSER=` overrides — plain Chrome bounced on the
desk machine). One-click from the **Codeman header "multi-monitor" button**
(`POST /api/system/span-displays`, which spawns this script), or run it
directly. Step 1 + logout is still manual; the script warns if spanning isn't
active.
3. Arrange the two monitors as a contiguous rectangle in Display settings so the
union has no vertical offset gap.
### Coordinate model & the bezel seam
- Enumerate displays with **`window.getScreenDetails()`** (Chrome, secure
context, `window-management` permission). Gives each screen's
`left/top/width/height/availLeft/...` in a **virtual-desktop coordinate
space** spanning all monitors.
- Use it for **screen-edge snapping zones**: e.g. dropping a panel within the
right screen's bounds snaps it to fill that screen; the seam between the two
screens' rects is a "halt / boundary" zone the cursor crosses.
- **Account for the bezel gap.** The two monitors are physically separated, but
the spanned window's pixels are contiguous — a panel dragged across the seam
visually jumps the bezel. Optional: add a dead-band at the seam x-coordinate
so a panel snaps to one side rather than straddling.
- `getScreenDetails` is **only needed for snapping/zone logic**, not for basic
dragging — dragging works the moment the window spans. So Part C can ship in
two steps: (1) just span + free drag, (2) add `getScreenDetails` snapping.
### Constraints to surface to the user
- macOS-specific; the "separate Spaces" toggle is global and affects all apps.
- Real fullscreen is unavailable (must run maximized).
- A bezel-width discontinuity sits in the middle of the coordinate space.
- `window-management` permission prompts once.
---
## Build phases
1. ✅ **A-MVP — in-page live float, single monitor (DONE, `581fcf9`/`3e0447a`).**
`entry.ts` `floatSession(id, x, y)` spawns an **iframe of `/session/:id`** in a
`.cg-float` div (640×420) at the drop point; re-grab + move work (re-dock zone
still TBD). Movability restored — the live session rides inside the page. (The
method is named `floatSession`, not the design-sketch `floatPanel`.)
2. ✅ **C-span — span the window (DONE, `063fd8f`/`59946b8`; validated at desk).**
macOS "separate Spaces" off + `scripts/span-codeman.sh` launches a maximized
`--app` window across the display union (Brave-first; `BROWSER=` override).
**Confirmed:** panels drag across the seam — viewport mapping held with zero
`entry.ts` change. Launchable one-click from the **Codeman header button** →
`POST /api/system/span-displays` (PR #103 `95b0035`), or by running the script.
3. ⏳ **C-snap — screen-aware snapping (pending).** Add `getScreenDetails`; snap a
panel to the screen it's dropped on; add the seam dead-band.
4. **A-alt (optional).** Swap the iframe float for a native teammate-style
`new Terminal()` panel if the iframe shell feels heavy or many floats strain
memory.
## Open questions / verification before coding
- [x] **Concurrent rendering — RESOLVED (2026-06-08).** A live session view
*can* be mounted into an arbitrary in-page container concurrently with the
main view. The PR #103 branch already ships it three ways (teammate terminals,
log-viewer SSE windows, the iframe-able `/session/:id` solo route); fan-out
confirmed. Primary path: iframe the solo route. See the resolved section above.
- [ ] **Native-panel live feed (only if taking A-alt, not the iframe):** trace
the exact transport that pushes *continuous* teammate-pane output after the
REST buffer seed (`pendingData` flush source). The iframe path sidesteps this.
- [ ] **`window.app.detachSession` location:** when wiring the *kept* OS-window
detach verb, note this method was **not found in PR #103 source** (only
server-side `detachSessionListeners`); it works at runtime, so confirm where
it's actually defined before extending it.
- [ ] **Spanning feasibility on the actual desk setup** (monitor arrangement,
whether "separate Spaces" off is acceptable to the user globally).
- [ ] **Re-dock target:** decide the re-dock gesture/zone (drop over tab strip
vs a dedicated dock region).
## Touch-points summary
| Layer | File | Change | Status |
|-------|------|--------|--------|
| Gesture consumer | `gesture-proto/src/codeman/entry.ts` | `detach()` → `floatSession()`; `floats` map; panel re-grab; (later) re-dock branch + `getScreenDetails` snapping | ✅ float+re-grab done (`581fcf9`/`3e0447a`); re-dock/snap pending |
| Gesture core | `gesture-proto/src/gesture/*` | **none** — stays transport-agnostic | ✅ unchanged |
| Codeman — launch | `src/web/routes/system-routes.ts`, `src/web/public/{index.html,panels-ui.js}`, `scripts/span-codeman.sh` | header button → `POST /api/system/span-displays` → spawn span script (bundled into repo) | ✅ PR #103 `95b0035` |
| Codeman — caching | `src/web/server.ts` | `cacheBustAssets()` — `?v=<mtime>` on all same-origin `.js`/`.css` so frontend edits show on normal reload | ✅ PR #103 `b5ea711` |
| Ops | macOS display settings + `scripts/span-codeman.sh` | "separate Spaces" off + re-login; Brave-first maximized spanning window | ✅ validated at desk |
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Codeman Gesture Control — Phase 4</title>
<style>
:root {
color-scheme: dark;
--bg: #0b0f17;
--panel: #131a26;
--ink: #e6edf3;
--muted: #94a3b8;
--accent: #38bdf8;
}
* { box-sizing: border-box; }
body {
margin: 0;
font-family: ui-sans-serif, system-ui, -apple-system, sans-serif;
background: var(--bg);
color: var(--ink);
min-height: 100vh;
display: flex;
flex-direction: column;
align-items: center;
gap: 1rem;
padding: 1.5rem;
}
h1 { font-size: 1.25rem; margin: 0; font-weight: 650; }
.sub { color: var(--muted); font-size: 0.85rem; margin: 0; }
.stage {
position: relative;
width: min(90vw, 960px);
aspect-ratio: 16 / 9;
background: #000;
border-radius: 12px;
overflow: hidden;
box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}
/* Fullscreen: fill the display so grab targets get big. Coord mapping
reads the stage rect each frame, so it adapts automatically. */
#stage:fullscreen,
#stage:-webkit-full-screen {
width: 100vw;
height: 100vh;
max-width: none;
aspect-ratio: auto;
border-radius: 0;
}
/* Mirror the camera so it reads like a, er, mirror. */
#cam {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
object-fit: cover;
transform: scaleX(-1);
}
/* Overlay is NOT CSS-mirrored; overlay.ts mirrors coords itself.
z-index 2 keeps the cursor + skeleton drawn over the tab board. */
#overlay {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
pointer-events: none;
z-index: 2;
}
/* Phase 3 tab board — overlays the video; gesture-driven, no mouse. */
#board {
position: absolute;
inset: 0;
display: flex;
gap: 12px;
padding: 12px;
pointer-events: none;
z-index: 1;
}
#board .column {
flex: 1;
min-width: 0;
display: flex;
flex-direction: column;
background: rgba(11, 15, 23, 0.55);
border: 1px solid #25324a;
border-radius: 10px;
backdrop-filter: blur(3px);
transition: border-color 0.1s, background 0.1s;
}
#board .column.col-hot {
border-color: var(--accent);
background: rgba(56, 189, 248, 0.18);
}
#board .column > header {
font-size: 0.78rem;
font-weight: 650;
color: var(--muted);
padding: 0.5rem 0.6rem;
border-bottom: 1px solid #25324a;
}
#board .tablist {
flex: 1;
padding: 0.5rem;
display: flex;
flex-direction: column;
gap: 0.4rem;
overflow: hidden;
}
#board .tab {
background: #1b2740;
border: 1px solid #2c3c5c;
border-radius: 8px;
padding: 0.85rem 0.7rem;
min-height: 3rem;
display: flex;
align-items: center;
font-size: 0.95rem;
font-weight: 550;
font-variant-numeric: tabular-nums;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
transition: border-color 0.1s, transform 0.05s;
}
#board .tab.tab-hot {
border-color: var(--accent);
background: #22304d;
}
#board .tab.dragging {
position: absolute;
z-index: 5;
width: auto;
box-shadow: 0 12px 30px rgba(0, 0, 0, 0.55);
transform: scale(1.05);
opacity: 0.97;
border-color: #4ade80;
}
.controls { display: flex; gap: 0.75rem; align-items: center; }
button {
background: var(--accent);
color: #04222e;
border: 0;
border-radius: 8px;
padding: 0.55rem 1.1rem;
font-size: 0.95rem;
font-weight: 650;
cursor: pointer;
}
button:disabled { opacity: 0.4; cursor: not-allowed; }
button.ghost { background: var(--panel); color: var(--ink); }
select {
background: var(--panel);
color: var(--ink);
border: 1px solid #25324a;
border-radius: 8px;
padding: 0.5rem 0.75rem;
font-size: 0.9rem;
max-width: 16rem;
}
select:disabled { opacity: 0.4; cursor: not-allowed; }
.hud {
display: flex;
gap: 1.5rem;
background: var(--panel);
border-radius: 10px;
padding: 0.75rem 1.25rem;
font-variant-numeric: tabular-nums;
font-size: 0.9rem;
}
.hud .label { color: var(--muted); margin-right: 0.4rem; }
.hud b { font-weight: 650; }
#status-msg { color: var(--muted); font-size: 0.85rem; min-height: 1.2em; margin: 0; }
</style>
</head>
<body>
<h1>Codeman Gesture Control</h1>
<p class="sub">Phase 4 — pinch-drag tabs + discrete gesture commands. Camera feed never leaves this machine.</p>
<div class="stage" id="stage">
<video id="cam" autoplay muted playsinline></video>
<div id="board"></div>
<canvas id="overlay"></canvas>
</div>
<div class="controls">
<button id="start">Start camera</button>
<button id="stop" class="ghost" disabled>Stop</button>
<button id="fullscreen" class="ghost" title="Toggle fullscreen (Esc to exit)">⛶ Fullscreen</button>
<select id="camera" disabled title="Choose camera (populated after start)">
<option>Default camera</option>
</select>
</div>
<div class="hud">
<span><span class="label">FPS</span><b id="fps">0</b></span>
<span><span class="label">Hands</span><b id="hand">no</b></span>
<span><span class="label">Pinch</span><b id="pinch">—</b></span>
<span><span class="label">Gesture</span><b id="gesture">—</b></span>
</div>
<p id="status-msg">Click “Start camera” to begin (camera access requires a click).</p>
<script type="module" src="/src/main.ts"></script>
</body>
</html>
+28
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{
"name": "codeman-gesture-control",
"private": true,
"version": "0.1.0",
"type": "module",
"description": "Jarvis-style hand-tracking input layer for the Codeman dashboard. Vendored into the Codeman repo; the Codeman bundle (src/codeman/entry.ts) is built into src/web/public/gesture/gesture-codeman.js by `npm run build:gesture` at the repo root.",
"scripts": {
"dev": "vite",
"preview": "vite preview",
"typecheck": "tsc --noEmit",
"build:demo": "tsc && vite build",
"build:codeman": "esbuild src/codeman/entry.ts --bundle --format=esm --target=es2020 --outfile=dist-codeman/gesture-codeman.js"
},
"dependencies": {
"@mediapipe/tasks-vision": "0.10.21"
},
"devDependencies": {
"esbuild": "^0.27.3",
"typescript": "^5.5.4",
"vite": "^7.3.5"
},
"homepage": "https://github.com/Ark0N/Codeman/tree/master/packages/gesture-control#readme",
"repository": {
"type": "git",
"url": "git+https://github.com/Ark0N/Codeman.git",
"directory": "packages/gesture-control"
}
}
@@ -0,0 +1,518 @@
// Phase 5 — Codeman integration entry point.
//
// This is the *consumer* layer that replaces `demo/tabs.ts` for the real
// Codeman dashboard. It is bundled (esbuild, MediaPipe included) into a single
// ESM file and served by Codeman from `/gesture/gesture-codeman.js`, loaded into
// the dashboard page when Codeman is started with `CODEMAN_GESTURE=1`.
//
// The gesture *core* (`../gesture/*`) is unchanged and transport-agnostic — it
// emits coordinate-only `grab`/`drag`/`drop`. Here we map those onto Codeman's
// real session tabs (`.session-tab[data-id]`) and toolbar buttons.
//
// Three interactions, all off the same pinch:
// • Tab "grab-to-float" — pinch a session tab, *pull it out* of the strip (a
// ghost follows your hand), release past a threshold → the session opens as
// an in-page floating panel at the drop point; a small twitch-and-release
// cancels (snaps back).
// • Panel "re-grab" — pinch an existing floating panel and move it anywhere;
// release over the tab strip to re-dock it (panel goes away, the tab stays).
// This is the capability the old OS-window detach lost.
// • Button "tap" — pinch over a toolbar button (Run / Run Shell) and release
// in place → fires the button's real click handler. Drift too far first and
// it's treated as a stray move, not a tap.
//
// Why in-page floats, not OS-window detach (decided 2026-06-08, see
// docs/MULTIMONITOR_DESIGN.md): the hand only exists in the one page that owns
// the camera. `window.open`/`detachSession` puts the session in a sealed OS
// window the page can't hand-track — a detached session can never be moved
// again, a one-way trip. A floating panel (an iframe of the session's solo
// route `/session/:id`) stays in this page's DOM, so the hand keeps control:
// re-grab, move across the (spanned) viewport, drop, re-dock. The OS-window
// detach is kept for later as a *separate, deliberate* verb — no longer the pinch.
import { GestureController } from '../gesture/GestureController.ts';
import type { HandState } from '../gesture/types.ts';
declare global {
interface Window {
__codemanGesture?: GestureBridge;
}
}
const TAB_SELECTOR = '.session-tab';
/** An in-page floating session panel this layer spawned — re-grabbable to move. */
const PANEL_SELECTOR = '.cg-float';
/** The session-tab strip; dropping a moved panel over it re-docks the session. */
const DOCK_SELECTOR = '.session-tabs';
/** Toolbar buttons a pinch can "tap": Run (#runBtn → app.run()) and Run Shell
* (.btn-shell → app.runShell()). Pinch over one and release in place to fire
* it. Extend this list to expose more buttons to the gesture layer. */
const CLICK_SELECTOR = '#runBtn, .btn-shell';
const Z = 2147483000; // above the dashboard, below nothing that matters at the desk
/** Floating-panel size (px). Fixed for the MVP; resize is a later affordance. */
const FLOAT_W = 640;
const FLOAT_H = 420;
/** Minimum pull distance (px) from the grab point before a release floats the
* tab out. Below this it's an accidental pinch and the tab snaps back. */
const DETACH_PULL_PX = 70;
/** If a button-pinch drifts more than this, it's a stray move, not a tap. */
const TAP_CANCEL_PX = 45;
/** First letter colours: cyan left, violet right; green while pinching. */
const handColor = (handedness: string, pinching: boolean): string =>
pinching ? '#4ade80' : handedness === 'Right' ? '#a78bfa' : '#38bdf8';
/** A floating in-page session panel (an iframe of `/session/:id`) the hand can
* place and re-grab. Stays in this page's DOM, so it never leaves hand reach. */
interface FloatingPanel {
id: string;
/** The `.cg-float` container element. */
el: HTMLElement;
}
/** Live state for one hand's in-progress grab — either a session *tab* being
* pulled out into a new float, or an existing *panel* being moved/re-docked. */
type Grab =
| {
kind: 'tab';
id: string;
tab: HTMLElement;
ghost: HTMLElement;
/** Grab origin in viewport px, to measure pull distance. */
ox: number;
oy: number;
/** Pulled past the float-out threshold at least once. */
armed: boolean;
}
| {
kind: 'panel';
id: string;
panel: FloatingPanel;
/** Cursor→panel-top-left offset at grab, so it doesn't snap when re-grabbed. */
dx: number;
dy: number;
/** Cursor currently over the tab strip → releasing re-docks. */
overDock: boolean;
};
/** Live state for one hand pinching a toolbar button (Run / Run Shell). */
interface Tap {
el: HTMLElement;
label: string;
ox: number;
oy: number;
}
class GestureBridge {
private readonly surface: HTMLDivElement;
private readonly canvas: HTMLCanvasElement;
private readonly ctx: CanvasRenderingContext2D;
private readonly video: HTMLVideoElement;
private readonly button: HTMLButtonElement;
private readonly camBtn: HTMLButtonElement;
private readonly status: HTMLSpanElement;
private readonly gc: GestureController;
private running = false;
/** Camera view: full-viewport dimmed background, or small corner preview. */
private camMode: 'full' | 'pip' = 'full';
/** Per-hand in-progress grab (a tab being pulled out, or a panel being moved). */
private grabs = new Map<string, Grab>();
/** Per-hand in-progress button pinch (fires on release if it didn't drift). */
private taps = new Map<string, Tap>();
/** Live floating panels, keyed by session id (idempotent per id). */
private floats = new Map<string, FloatingPanel>();
constructor() {
injectStyles();
// Full-viewport, click-through surface so coords map straight to viewport
// pixels and elementFromPoint() sees the tabs beneath, not our overlay.
this.surface = el('div', 'cg-surface') as HTMLDivElement;
this.canvas = el('canvas', 'cg-canvas') as HTMLCanvasElement;
this.video = el('video', 'cg-preview') as HTMLVideoElement;
this.video.muted = true;
this.video.playsInline = true;
this.applyCamMode();
const dock = el('div', 'cg-dock');
this.button = el('button', 'cg-btn') as HTMLButtonElement;
this.button.textContent = '🖐 Gesture';
this.camBtn = el('button', 'cg-btn cg-btn-icon') as HTMLButtonElement;
this.camBtn.textContent = '⛶';
this.camBtn.title = 'Toggle camera size (fullscreen / corner)';
this.status = el('span', 'cg-status') as HTMLSpanElement;
this.status.textContent = 'off';
dock.append(this.button, this.camBtn, this.status);
document.body.append(this.surface, this.video, this.canvas, dock);
this.ctx = this.canvas.getContext('2d')!;
this.sizeCanvas();
window.addEventListener('resize', () => this.sizeCanvas());
this.gc = new GestureController({
video: this.video,
surface: this.surface,
numHands: 1,
// Self-host the MediaPipe runtime + model from Codeman (same-origin) instead
// of the CDN, so an ad/content blocker, offline desk, or strict browser
// can't break startup (the CDN failure surfaced as `failed: {isTrusted}` —
// a resource load-error Event). Served from public/gesture/.
wasmBase: '/gesture/wasm',
modelUrl: '/gesture/gesture_recognizer.task',
});
this.gc.on('grab', (p) => this.onGrab(p.hand, p.x, p.y));
this.gc.on('drag', (p) => this.onDrag(p.hand, p.x, p.y));
this.gc.on('drop', (p) => this.onDrop(p.hand, p.x, p.y));
this.gc.on('status', ({ fps, hands }) => this.onStatus(fps, hands));
this.button.addEventListener('click', () => void this.toggle());
this.camBtn.addEventListener('click', () => this.toggleCamMode());
}
private async toggle(): Promise<void> {
if (this.running) {
this.gc.stop();
this.running = false;
this.cancelAllGrabs();
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
this.button.classList.remove('on');
this.status.textContent = 'off';
return;
}
this.button.disabled = true;
this.status.textContent = 'starting…';
try {
await this.gc.start();
this.running = true;
this.button.classList.add('on');
this.status.textContent = 'on — pinch a tab or button';
} catch (err) {
// Surface the *real* cause: MediaPipe/Emscripten can throw a non-Error
// (number/string), so `(err as Error).message` was logging "undefined".
const msg = describeError(err);
this.status.textContent = `failed: ${msg}`;
this.status.title = msg;
console.error('[gesture] start failed', err);
} finally {
this.button.disabled = false;
}
}
private toggleCamMode(): void {
this.camMode = this.camMode === 'full' ? 'pip' : 'full';
this.applyCamMode();
}
private applyCamMode(): void {
this.video.classList.toggle('cg-full', this.camMode === 'full');
this.video.classList.toggle('cg-pip', this.camMode === 'pip');
}
/** Top-most element matching `sel` at a viewport point (overlays are
* click-through, so elementFromPoint sees the dashboard beneath). */
private hitClosest(x: number, y: number, sel: string): HTMLElement | null {
const hit = document.elementFromPoint(x, y);
return (hit?.closest(sel) as HTMLElement | null) ?? null;
}
private onGrab(hand: string, x: number, y: number): void {
// An existing floating panel → re-grab to move it (priority over tabs).
// Make it click-through while held so elementFromPoint sees the dock zone
// (and other content) beneath it, and it can't re-grab itself.
const panelEl = this.hitClosest(x, y, PANEL_SELECTOR);
const panelId = panelEl?.dataset.id;
if (panelEl && panelId) {
const float = this.floats.get(panelId);
if (float) {
const rect = panelEl.getBoundingClientRect();
panelEl.style.pointerEvents = 'none';
panelEl.classList.add('cg-float-grabbed');
this.grabs.set(hand, {
kind: 'panel',
id: panelId,
panel: float,
dx: x - rect.left,
dy: y - rect.top,
overDock: false,
});
this.status.textContent = 'moving — drop over tabs to re-dock';
return;
}
}
// A session tab → grab-and-pull-out into a floating panel (ghost follows).
const tab = this.hitClosest(x, y, TAB_SELECTOR);
const id = tab?.dataset.id;
if (tab && id) {
const rect = tab.getBoundingClientRect();
const ghost = tab.cloneNode(true) as HTMLElement;
ghost.classList.add('cg-ghost');
ghost.removeAttribute('id');
ghost.style.width = `${rect.width}px`;
ghost.style.height = `${rect.height}px`;
document.body.append(ghost);
tab.classList.add('cg-grabbed');
this.grabs.set(hand, { kind: 'tab', id, tab, ghost, ox: x, oy: y, armed: false });
this.positionGhost(ghost, x, y);
return;
}
// A toolbar button (Run / Run Shell) → tap-to-fire on release.
const btn = this.hitClosest(x, y, CLICK_SELECTOR);
if (btn) {
const label = (btn.textContent || btn.getAttribute('title') || 'button').trim();
btn.classList.add('cg-tap-armed');
this.taps.set(hand, { el: btn, label, ox: x, oy: y });
this.status.textContent = `release to ${label.toLowerCase()}`;
}
}
private onDrag(hand: string, x: number, y: number): void {
const grab = this.grabs.get(hand);
if (grab?.kind === 'tab') {
this.positionGhost(grab.ghost, x, y);
const pulled = Math.hypot(x - grab.ox, y - grab.oy) >= DETACH_PULL_PX;
if (pulled !== grab.armed) {
grab.armed = pulled;
grab.ghost.classList.toggle('cg-armed', pulled);
this.status.textContent = pulled ? 'release to float out' : 'on — pinch a tab';
}
return;
}
if (grab?.kind === 'panel') {
this.moveFloat(grab.panel, x - grab.dx, y - grab.dy);
const overDock = !!this.hitClosest(x, y, DOCK_SELECTOR);
if (overDock !== grab.overDock) {
grab.overDock = overDock;
grab.panel.el.classList.toggle('cg-redock', overDock);
this.status.textContent = overDock ? 'release to re-dock' : 'moving panel';
}
return;
}
// A button pinch that drifts too far is a stray move, not a tap — cancel it.
const tap = this.taps.get(hand);
if (tap && Math.hypot(x - tap.ox, y - tap.oy) > TAP_CANCEL_PX) {
tap.el.classList.remove('cg-tap-armed');
this.taps.delete(hand);
this.status.textContent = 'on — pinch a tab or button';
}
}
private onDrop(hand: string, x: number, y: number): void {
const grab = this.grabs.get(hand);
if (grab?.kind === 'tab') {
this.grabs.delete(hand);
grab.ghost.remove();
grab.tab.classList.remove('cg-grabbed');
if (grab.armed) this.floatPanel(grab.id, x, y);
else this.flash('cancelled');
return;
}
if (grab?.kind === 'panel') {
this.grabs.delete(hand);
grab.panel.el.style.pointerEvents = ''; // interactive again (type into it)
grab.panel.el.classList.remove('cg-float-grabbed', 'cg-redock');
if (grab.overDock) this.redock(grab.id);
else this.flash('placed');
return;
}
// Release over the same button → fire its real click handler.
const tap = this.taps.get(hand);
if (tap) {
this.taps.delete(hand);
tap.el.classList.remove('cg-tap-armed');
tap.el.click(); // runs the button's onclick (app.run() / app.runShell())
this.flash(tap.label.toLowerCase());
}
}
/** Pop a session into an in-page floating panel (an iframe of its solo route)
* centered on the drop point. Unlike OS-window detach, the panel lives in
* this page's DOM, so the hand can re-grab and move it. Idempotent per id:
* re-floating an existing id just repositions the panel it already has. */
private floatPanel(id: string, x: number, y: number): void {
let float = this.floats.get(id);
if (!float) {
const container = el('div', 'cg-float');
container.dataset.id = id;
const bar = el('div', 'cg-float-bar');
bar.textContent = `session ${id}`;
const frame = el('iframe', 'cg-float-frame') as HTMLIFrameElement;
frame.src = `/session/${encodeURIComponent(id)}`;
frame.title = `Session ${id}`;
container.append(bar, frame);
document.body.append(container);
float = { id, el: container };
this.floats.set(id, float);
this.flash('floated out');
} else {
this.flash('re-floated');
}
this.moveFloat(float, x - FLOAT_W / 2, y - FLOAT_H / 2);
}
/** Re-dock a floated session: drop its in-page panel. The original
* `.session-tab` was never removed, so the session is simply back to plain
* tab form. Mirrors Codeman's own `.detached` → attach toggle. */
private redock(id: string): void {
const float = this.floats.get(id);
if (!float) return;
float.el.remove();
this.floats.delete(id);
this.flash('re-docked');
}
/** Position a float by its top-left corner, clamped to stay on-screen. */
private moveFloat(float: FloatingPanel, left: number, top: number): void {
const l = Math.min(Math.max(0, left), Math.max(0, window.innerWidth - FLOAT_W));
const t = Math.min(Math.max(0, top), Math.max(0, window.innerHeight - FLOAT_H));
float.el.style.left = `${l}px`;
float.el.style.top = `${t}px`;
}
private positionGhost(ghost: HTMLElement, x: number, y: number): void {
ghost.style.left = `${x}px`;
ghost.style.top = `${y}px`;
}
private cancelAllGrabs(): void {
// Floats themselves persist (they're placed windows) — only release any
// in-progress grab cleanly, restoring a moved panel's interactivity.
for (const grab of this.grabs.values()) {
if (grab.kind === 'tab') {
grab.ghost.remove();
grab.tab.classList.remove('cg-grabbed');
} else {
grab.panel.el.style.pointerEvents = '';
grab.panel.el.classList.remove('cg-float-grabbed', 'cg-redock');
}
}
this.grabs.clear();
for (const tap of this.taps.values()) tap.el.classList.remove('cg-tap-armed');
this.taps.clear();
document
.querySelectorAll(`${TAB_SELECTOR}.cg-grabbed, .cg-tap-armed`)
.forEach((t) => t.classList.remove('cg-grabbed', 'cg-tap-armed'));
}
private onStatus(fps: number, hands: HandState[]): void {
// Draw per-hand cursor dots (green while pinching) so the user can aim.
const { width, height } = this.canvas;
const dpr = window.devicePixelRatio || 1;
this.ctx.clearRect(0, 0, width, height);
const rect = this.surface.getBoundingClientRect();
for (const h of hands) {
const x = (1 - h.cursor.x) * rect.width;
const y = h.cursor.y * rect.height;
this.ctx.beginPath();
this.ctx.arc(x * dpr, y * dpr, (h.pinching ? 14 : 9) * dpr, 0, Math.PI * 2);
this.ctx.fillStyle = handColor(h.handedness, h.pinching);
this.ctx.globalAlpha = 0.85;
this.ctx.fill();
this.ctx.globalAlpha = 1;
}
if (this.running && this.grabs.size === 0 && this.taps.size === 0) {
this.status.textContent = `on · ${fps}fps`;
}
}
private flash(msg: string): void {
this.status.textContent = msg;
}
private sizeCanvas(): void {
const dpr = window.devicePixelRatio || 1;
this.canvas.width = Math.floor(window.innerWidth * dpr);
this.canvas.height = Math.floor(window.innerHeight * dpr);
}
}
// ---- tiny helpers ------------------------------------------------------
function el(tag: string, className: string): HTMLElement {
const node = document.createElement(tag);
node.className = className;
return node;
}
/** Best-effort human-readable message for any thrown value (Error or not). */
function describeError(err: unknown): string {
if (err instanceof Error) return err.message || err.name || 'Error';
if (typeof err === 'string') return err;
if (typeof err === 'number') return `code ${err}`;
if (err && typeof err === 'object') {
const m = (err as { message?: unknown }).message;
if (typeof m === 'string' && m) return m;
try {
return JSON.stringify(err);
} catch {
return Object.prototype.toString.call(err);
}
}
return String(err);
}
function injectStyles(): void {
if (document.getElementById('cg-styles')) return;
const css = `
.cg-surface, .cg-canvas { position: fixed; inset: 0; pointer-events: none; }
.cg-surface { z-index: ${Z}; }
.cg-canvas { z-index: ${Z + 1}; width: 100vw; height: 100vh; }
.cg-preview { transform: scaleX(-1); pointer-events: none; background: #000; }
.cg-preview.cg-pip {
position: fixed; right: 12px; bottom: 12px; width: 240px; height: 135px;
object-fit: cover; border-radius: 8px; z-index: ${Z + 2};
box-shadow: 0 4px 16px rgba(0,0,0,.5); opacity: 1;
}
.cg-preview.cg-full {
position: fixed; inset: 0; width: 100vw; height: 100vh;
object-fit: cover; opacity: .28; z-index: ${Z};
}
.cg-ghost {
position: fixed; left: 0; top: 0; transform: translate(-50%, -50%) scale(1.06);
z-index: ${Z + 2}; pointer-events: none; opacity: .92;
box-shadow: 0 8px 28px rgba(0,0,0,.55); border-radius: 8px;
outline: 2px solid #38bdf8; outline-offset: -2px;
}
.cg-ghost.cg-armed { outline-color: #4ade80; box-shadow: 0 8px 28px rgba(74,222,128,.5); }
.cg-dock {
position: fixed; right: 12px; bottom: 156px; z-index: ${Z + 3};
display: flex; align-items: center; gap: 8px; font: 12px/1 system-ui, sans-serif;
}
.cg-btn {
padding: 6px 12px; border-radius: 6px; border: 1px solid #3a3a40;
background: #1b1b1f; color: #e5e5e7; cursor: pointer;
}
.cg-btn-icon { padding: 6px 9px; }
.cg-btn.on { background: #16331f; border-color: #2f6b41; color: #4ade80; }
.cg-status { color: #9aa0a6; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-tab.cg-grabbed { opacity: .35; outline: 2px dashed #4ade80; outline-offset: -2px; }
.cg-tap-armed { outline: 2px solid #4ade80 !important; outline-offset: 2px; box-shadow: 0 0 0 4px rgba(74,222,128,.25) !important; }
.cg-float {
position: fixed; left: 0; top: 0; width: ${FLOAT_W}px; height: ${FLOAT_H}px;
z-index: ${Z}; display: flex; flex-direction: column; overflow: hidden;
background: #0c0c0f; border-radius: 10px; outline: 2px solid #38bdf8;
outline-offset: -2px; box-shadow: 0 10px 40px rgba(0,0,0,.6);
}
.cg-float.cg-float-grabbed { outline-color: #4ade80; box-shadow: 0 12px 48px rgba(74,222,128,.45); }
.cg-float.cg-redock { outline-color: #fbbf24; box-shadow: 0 12px 48px rgba(251,191,36,.5); }
.cg-float-bar {
flex: 0 0 auto; padding: 4px 10px; font: 11px/1.6 system-ui, sans-serif;
color: #cbd5e1; background: #15151a; border-bottom: 1px solid #2a2a30;
user-select: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cg-float-frame { flex: 1 1 auto; width: 100%; border: 0; background: #000; }
`;
const style = document.createElement('style');
style.id = 'cg-styles';
style.textContent = css;
document.head.append(style);
}
// Idempotent bootstrap — re-importing must not stack overlays.
if (!window.__codemanGesture) {
window.__codemanGesture = new GestureBridge();
}
@@ -0,0 +1,120 @@
// Debug overlay: draws the 21-point hand skeleton over the (mirrored) video.
//
// The <video> is mirrored via CSS (transform: scaleX(-1)). To make the drawn
// skeleton line up with what you see, we mirror the X coordinate here
// (x_draw = (1 - x) * width) rather than CSS-mirroring the canvas — that keeps
// any future text we draw readable.
import type { GestureRecognizerResult } from '@mediapipe/tasks-vision';
import { HAND_CONNECTIONS } from '../gesture/landmarks.ts';
/** A cursor to draw: raw normalized position + base color + pinch state. */
export interface CursorMark {
x: number;
y: number;
color: string;
pinching: boolean;
}
export class Overlay {
private ctx: CanvasRenderingContext2D;
constructor(
private canvas: HTMLCanvasElement,
private video: HTMLVideoElement
) {
const ctx = canvas.getContext('2d');
if (!ctx) throw new Error('Could not get 2D context for overlay canvas');
this.ctx = ctx;
}
/** Match the canvas backing-store resolution to the displayed video size. */
private syncSize(): void {
const w = this.video.videoWidth || this.video.clientWidth;
const h = this.video.videoHeight || this.video.clientHeight;
if (w && h && (this.canvas.width !== w || this.canvas.height !== h)) {
this.canvas.width = w;
this.canvas.height = h;
}
}
clear(): void {
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
}
/**
* Draw the detected hands' skeletons plus one smoothed cursor per hand.
* Cursor coords are raw normalized [0,1] (mirrored here, like the skeleton).
*/
draw(result: GestureRecognizerResult, cursors: CursorMark[] = []): void {
this.syncSize();
const { width: w, height: h } = this.canvas;
const ctx = this.ctx;
ctx.clearRect(0, 0, w, h);
const hands = result.landmarks ?? [];
for (const landmarks of hands) {
// Connections (bones)
ctx.strokeStyle = 'rgba(80, 220, 255, 0.9)';
ctx.lineWidth = 3;
for (const [a, b] of HAND_CONNECTIONS) {
const pa = landmarks[a];
const pb = landmarks[b];
if (!pa || !pb) continue;
ctx.beginPath();
ctx.moveTo((1 - pa.x) * w, pa.y * h);
ctx.lineTo((1 - pb.x) * w, pb.y * h);
ctx.stroke();
}
// Joints (points)
for (let i = 0; i < landmarks.length; i++) {
const p = landmarks[i];
const x = (1 - p.x) * w;
const y = p.y * h;
// Highlight thumb tip (4) + index tip (8) — these drive the cursor later.
const isPinchPoint = i === 4 || i === 8;
ctx.fillStyle = isPinchPoint ? '#ffd166' : '#ff5d8f';
ctx.beginPath();
ctx.arc(x, y, isPinchPoint ? 7 : 4, 0, Math.PI * 2);
ctx.fill();
}
}
for (const c of cursors) this.drawCursor(c, w, h);
}
/** A ring + crosshair at the cursor; green + filled while pinching. */
private drawCursor(cursor: CursorMark, w: number, h: number): void {
const ctx = this.ctx;
const cx = (1 - cursor.x) * w; // mirror X to match the displayed video
const cy = cursor.y * h;
const pinching = cursor.pinching;
const r = pinching ? 16 : 12;
const color = pinching ? '#4ade80' : cursor.color;
if (pinching) {
ctx.fillStyle = 'rgba(74, 222, 128, 0.25)';
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.fill();
}
ctx.strokeStyle = color;
ctx.lineWidth = 3;
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.stroke();
ctx.beginPath();
ctx.moveTo(cx - r - 5, cy);
ctx.lineTo(cx - r + 4, cy);
ctx.moveTo(cx + r - 4, cy);
ctx.lineTo(cx + r + 5, cy);
ctx.moveTo(cx, cy - r - 5);
ctx.lineTo(cx, cy - r + 4);
ctx.moveTo(cx, cy + r - 4);
ctx.lineTo(cx, cy + r + 5);
ctx.stroke();
}
}
+209
View File
@@ -0,0 +1,209 @@
// demo/tabs.ts — Phase 3 fake-tab board.
//
// 3 columns of draggable "session" tabs, driven entirely by gesture events
// (no mouse). The board overlays the camera stage, so surface-pixel coords
// from GestureController map straight onto board-local coords.
//
// Source of truth for which tab is in which column is the DOM itself. The
// state machine here is tiny: grab → (drag)* → drop, tracked per hand so two
// hands can drag two tabs at once.
interface Tab {
id: string;
el: HTMLElement;
}
interface Column {
id: string;
title: string;
el: HTMLElement;
list: HTMLElement;
}
interface Grab {
tab: Tab;
originList: HTMLElement;
w: number;
h: number;
}
/** A hovering cursor for highlight purposes. */
export interface HoverPoint {
x: number;
y: number;
pinching: boolean;
}
const INITIAL: Array<{ id: string; title: string; tabs: string[] }> = [
{ id: 'screen-1', title: 'Screen 1', tabs: ['auth-refactor', 'api-tests'] },
{ id: 'screen-2', title: 'Screen 2', tabs: ['db-migrate', 'ui-polish', 'docs'] },
{ id: 'screen-3', title: 'Screen 3', tabs: ['ci-fix'] },
];
export class TabsBoard {
private columns: Column[] = [];
private tabs = new Map<string, Tab>();
/** hand id → the tab it is currently dragging. */
private grabs = new Map<string, Grab>();
/** @param onDrop notified after a settled drop: (tab, column or null if cancelled). */
constructor(
private root: HTMLElement,
private onDrop?: (tabId: string, columnId: string | null) => void
) {
this.build();
}
private build(): void {
this.root.classList.add('board');
for (const col of INITIAL) {
const el = document.createElement('div');
el.className = 'column';
el.dataset.col = col.id;
const header = document.createElement('header');
header.textContent = col.title;
const list = document.createElement('div');
list.className = 'tablist';
el.append(header, list);
this.root.append(el);
this.columns.push({ id: col.id, title: col.title, el, list });
for (const id of col.tabs) {
const tab = this.makeTab(id);
list.append(tab.el);
}
}
}
private makeTab(id: string): Tab {
const el = document.createElement('div');
el.className = 'tab';
el.dataset.tab = id;
el.textContent = id;
const tab: Tab = { id, el };
this.tabs.set(id, tab);
return tab;
}
// ---- Geometry --------------------------------------------------------
/** Element rect in board-local coords (origin = board top-left). */
private localRect(el: HTMLElement): DOMRect {
const r = el.getBoundingClientRect();
const base = this.root.getBoundingClientRect();
return new DOMRect(r.left - base.left, r.top - base.top, r.width, r.height);
}
/** Hit-test slop (px). Cursor jitter + a small target shouldn't fight you. */
private static readonly GRAB_PAD = 18;
private static contains(r: DOMRect, x: number, y: number, pad = 0): boolean {
return x >= r.left - pad && x <= r.right + pad && y >= r.top - pad && y <= r.bottom + pad;
}
private columnAt(x: number, y: number): Column | null {
for (const c of this.columns) {
if (TabsBoard.contains(this.localRect(c.el), x, y)) return c;
}
return null;
}
/** Topmost ungrabbed tab under the point. Nearest-center wins ties so the
* padded hit-areas of adjacent tabs resolve to the most likely target. */
private tabAt(x: number, y: number): Tab | null {
let best: Tab | null = null;
let bestDist = Infinity;
for (const tab of this.tabs.values()) {
if (this.isGrabbed(tab.id)) continue;
const r = this.localRect(tab.el);
if (!TabsBoard.contains(r, x, y, TabsBoard.GRAB_PAD)) continue;
const cx = r.left + r.width / 2;
const cy = r.top + r.height / 2;
const d = (x - cx) ** 2 + (y - cy) ** 2;
if (d < bestDist) {
bestDist = d;
best = tab;
}
}
return best;
}
private isGrabbed(tabId: string): boolean {
for (const g of this.grabs.values()) if (g.tab.id === tabId) return true;
return false;
}
// ---- Highlights (driven each frame from the status snapshot) ---------
/** Recompute hover highlights from the full set of present cursors. */
hover(points: HoverPoint[]): void {
this.root.querySelectorAll('.col-hot, .tab-hot').forEach((el) => el.classList.remove('col-hot', 'tab-hot'));
for (const p of points) {
this.columnAt(p.x, p.y)?.el.classList.add('col-hot');
// Only show a grab affordance when the hand is open (not pinching).
if (!p.pinching) this.tabAt(p.x, p.y)?.el.classList.add('tab-hot');
}
}
// ---- Drag state machine ---------------------------------------------
grab(hand: string, x: number, y: number): void {
if (this.grabs.has(hand)) return;
const tab = this.tabAt(x, y);
if (!tab) return;
const rect = this.localRect(tab.el);
this.grabs.set(hand, {
tab,
originList: tab.el.parentElement as HTMLElement,
w: rect.width,
h: rect.height,
});
tab.el.classList.add('dragging');
tab.el.style.width = `${rect.width}px`;
// Reparent the floating tab onto the board root before positioning it.
// A `.column` can't be the containing block: its `backdrop-filter` makes it
// the containing block for absolutely-positioned children, so our
// board-local left/top would be offset by the column's own position (tabs
// in the middle/right columns flew off to the right). #board has no
// filter/transform, so it's a stable origin that matches moveTo's coords.
this.root.append(tab.el);
this.moveTo(tab.el, x, y, rect.width, rect.height);
}
drag(hand: string, x: number, y: number): void {
const g = this.grabs.get(hand);
if (!g) return;
this.moveTo(g.tab.el, x, y, g.w, g.h);
}
drop(hand: string, x: number, y: number): void {
const g = this.grabs.get(hand);
if (!g) return;
this.grabs.delete(hand);
const target = this.columnAt(x, y);
const dest = target ? target.list : g.originList;
dest.append(g.tab.el);
g.tab.el.classList.remove('dragging');
g.tab.el.style.removeProperty('width');
g.tab.el.style.removeProperty('left');
g.tab.el.style.removeProperty('top');
this.onDrop?.(g.tab.id, target ? target.id : null);
}
/** Center the floating tab on the cursor (clamped to the board). */
private moveTo(el: HTMLElement, x: number, y: number, w: number, h: number): void {
const base = this.root.getBoundingClientRect();
const left = Math.max(0, Math.min(x - w / 2, base.width - w));
const top = Math.max(0, Math.min(y - h / 2, base.height - h));
el.style.left = `${left}px`;
el.style.top = `${top}px`;
}
}
@@ -0,0 +1,386 @@
// GestureController — core input layer.
//
// Phase 0/1 scope (this file currently implements):
// - Open the webcam (getUserMedia) and attach it to a <video>.
// - Load MediaPipe GestureRecognizer in VIDEO mode (wasm + .task from CDN).
// - Run a requestAnimationFrame loop calling recognizeForVideo().
// - Emit `status` (fps / handPresent / gesture) and `results` (raw, debug).
//
// Later phases add the cursor (One-Euro filtered), pinch hysteresis, the
// hover/grab/drag/drop state machine, and the discrete gesture command bus.
// The event surface in types.ts already declares those so the API is stable.
import { FilesetResolver, GestureRecognizer, type GestureRecognizerResult } from '@mediapipe/tasks-vision';
import type {
GestureControllerOptions,
GestureEventHandler,
GestureEventMap,
GestureEventName,
HandState,
} from './types.ts';
import { LANDMARK, midpoint } from './landmarks.ts';
import { OneEuroFilter } from './OneEuroFilter.ts';
import { PinchDetector, pinchDistance } from './pinch.ts';
import { CommandDetector } from './commands.ts';
const DEFAULTS = {
numHands: 1,
deviceId: '',
pinchOn: 0.35,
pinchOff: 0.5,
minCutoff: 1.0,
beta: 0.01,
palmHoldMs: 1000,
minDetectionConfidence: 0.6,
minTrackingConfidence: 0.6,
// Pinned to the @mediapipe/tasks-vision version in package.json.
wasmBase: 'https://cdn.jsdelivr.net/npm/@mediapipe/tasks-vision@0.10.21/wasm',
modelUrl:
'https://storage.googleapis.com/mediapipe-models/gesture_recognizer/gesture_recognizer/float16/1/gesture_recognizer.task',
} as const;
interface PerHandState {
cursorX: OneEuroFilter;
cursorY: OneEuroFilter;
pinch: PinchDetector;
/** Original handedness label (the map key may be disambiguated). */
label: string;
/** Last emitted surface-pixel position, so we can drop on a vanished hand. */
lastX: number;
lastY: number;
}
export class GestureController {
private readonly opts: Required<GestureControllerOptions>;
private recognizer: GestureRecognizer | null = null;
private stream: MediaStream | null = null;
private rafId: number | null = null;
private running = false;
// Timestamps must be strictly increasing for recognizeForVideo.
private lastVideoTime = -1;
private lastTimestamp = -1;
// FPS tracking (rolling over a short window).
private frameTimes: number[] = [];
// Per-hand smoothing + pinch state, keyed by handedness ("Left"/"Right") so a
// hand keeps its own filters even when MediaPipe reorders the hands array.
private readonly handStates = new Map<string, PerHandState>();
// Discrete gesture → command bus (debounced; Open_Palm held = halt-all).
private readonly commands: CommandDetector;
// Internal storage is intentionally loose; the public on/off/emit signatures
// below keep callers fully type-safe per event name.
private listeners: Partial<Record<GestureEventName, Set<(payload: unknown) => void>>> = {};
constructor(options: GestureControllerOptions) {
this.opts = {
surface: options.surface ?? options.video,
numHands: options.numHands ?? DEFAULTS.numHands,
deviceId: options.deviceId ?? DEFAULTS.deviceId,
pinchOn: options.pinchOn ?? DEFAULTS.pinchOn,
pinchOff: options.pinchOff ?? DEFAULTS.pinchOff,
minCutoff: options.minCutoff ?? DEFAULTS.minCutoff,
beta: options.beta ?? DEFAULTS.beta,
palmHoldMs: options.palmHoldMs ?? DEFAULTS.palmHoldMs,
minDetectionConfidence: options.minDetectionConfidence ?? DEFAULTS.minDetectionConfidence,
minTrackingConfidence: options.minTrackingConfidence ?? DEFAULTS.minTrackingConfidence,
wasmBase: options.wasmBase ?? DEFAULTS.wasmBase,
modelUrl: options.modelUrl ?? DEFAULTS.modelUrl,
video: options.video,
};
this.commands = new CommandDetector(this.opts.palmHoldMs);
}
/** Get (or lazily create) the smoothing + pinch state for one hand. */
private handState(key: string): PerHandState {
let state = this.handStates.get(key);
if (!state) {
state = {
cursorX: new OneEuroFilter(this.opts.minCutoff, this.opts.beta),
cursorY: new OneEuroFilter(this.opts.minCutoff, this.opts.beta),
pinch: new PinchDetector(this.opts.pinchOn, this.opts.pinchOff),
label: key,
lastX: 0,
lastY: 0,
};
this.handStates.set(key, state);
}
return state;
}
// ---- Event emitter ---------------------------------------------------
on<K extends GestureEventName>(event: K, handler: GestureEventHandler<K>): this {
(this.listeners[event] ??= new Set()).add(handler as (payload: unknown) => void);
return this;
}
off<K extends GestureEventName>(event: K, handler: GestureEventHandler<K>): this {
this.listeners[event]?.delete(handler as (payload: unknown) => void);
return this;
}
private emit<K extends GestureEventName>(event: K, payload: GestureEventMap[K]): void {
this.listeners[event]?.forEach((h) => h(payload));
}
// ---- Lifecycle -------------------------------------------------------
/** Request the camera, load the model, and start the recognition loop. */
async start(): Promise<void> {
if (this.running) return;
await this.openCamera();
await this.loadRecognizer();
this.running = true;
this.lastVideoTime = -1;
this.lastTimestamp = -1;
this.frameTimes = [];
this.handStates.clear();
this.commands.reset();
this.loop();
}
/** Stop the loop, release the camera, and close the recognizer. */
stop(): void {
this.running = false;
if (this.rafId !== null) {
cancelAnimationFrame(this.rafId);
this.rafId = null;
}
if (this.stream) {
this.stream.getTracks().forEach((t) => t.stop());
this.stream = null;
}
this.opts.video.srcObject = null;
this.recognizer?.close();
this.recognizer = null;
}
/** The camera currently in use (resolved deviceId), or "" if not started. */
get deviceId(): string {
return this.opts.deviceId;
}
/** List available video input devices. Labels are only populated once the
* user has granted camera permission (i.e. after the first start()). */
async listCameras(): Promise<MediaDeviceInfo[]> {
const devices = await navigator.mediaDevices.enumerateDevices();
return devices.filter((d) => d.kind === 'videoinput');
}
/** Switch to a different camera. Reopens the stream live if already running. */
async useCamera(deviceId: string): Promise<void> {
this.opts.deviceId = deviceId;
if (!this.running) return;
if (this.stream) {
this.stream.getTracks().forEach((t) => t.stop());
this.stream = null;
}
await this.openCamera();
// Fresh camera = fresh geometry; drop stale filter state to avoid a snap.
this.handStates.clear();
this.lastVideoTime = -1;
}
// ---- Setup -----------------------------------------------------------
private async openCamera(): Promise<void> {
if (!navigator.mediaDevices?.getUserMedia) {
throw new Error('getUserMedia is not available (needs a secure context).');
}
const videoConstraints: MediaTrackConstraints = {
width: { ideal: 1280 },
height: { ideal: 720 },
frameRate: { ideal: 60, max: 60 },
};
// A specific device wins; otherwise ask for the user-facing camera.
if (this.opts.deviceId) videoConstraints.deviceId = { exact: this.opts.deviceId };
else videoConstraints.facingMode = 'user';
const stream = await navigator.mediaDevices.getUserMedia({
video: videoConstraints,
audio: false,
});
this.stream = stream;
// Record the resolved device so callers can pre-select it in a UI.
this.opts.deviceId = stream.getVideoTracks()[0]?.getSettings().deviceId ?? this.opts.deviceId;
const video = this.opts.video;
video.srcObject = stream;
video.muted = true;
video.playsInline = true;
await video.play();
// Wait until dimensions are known so the overlay can size itself.
if (!video.videoWidth) {
await new Promise<void>((resolve) => {
const onMeta = () => {
video.removeEventListener('loadedmetadata', onMeta);
resolve();
};
video.addEventListener('loadedmetadata', onMeta);
});
}
}
private async loadRecognizer(): Promise<void> {
const fileset = await FilesetResolver.forVisionTasks(this.opts.wasmBase);
const build = (delegate: 'GPU' | 'CPU') =>
GestureRecognizer.createFromOptions(fileset, {
baseOptions: {
modelAssetPath: this.opts.modelUrl,
delegate,
},
runningMode: 'VIDEO',
numHands: this.opts.numHands,
minHandDetectionConfidence: this.opts.minDetectionConfidence,
minHandPresenceConfidence: this.opts.minDetectionConfidence,
minTrackingConfidence: this.opts.minTrackingConfidence,
});
// GPU is the fast path (60fps on the MacBook). But some environments fail to
// init the GPU delegate — and MediaPipe/Emscripten often throws a *non-Error*
// value there (a raw number/string), which surfaces upstream as a useless
// "failed: undefined". Fall back to CPU so the recognizer still starts.
try {
this.recognizer = await build('GPU');
} catch (err) {
console.warn('[gesture] GPU delegate failed; falling back to CPU.', err);
this.recognizer = await build('CPU');
}
}
// ---- Loop ------------------------------------------------------------
private loop = (): void => {
if (!this.running || !this.recognizer) return;
this.rafId = requestAnimationFrame(this.loop);
const video = this.opts.video;
if (video.readyState < 2 /* HAVE_CURRENT_DATA */) return;
// Strictly increasing timestamp in ms.
let ts = performance.now();
if (ts <= this.lastTimestamp) ts = this.lastTimestamp + 1;
this.lastTimestamp = ts;
// Only re-run inference when the video frame actually advanced.
if (video.currentTime === this.lastVideoTime) return;
this.lastVideoTime = video.currentTime;
let result: GestureRecognizerResult;
try {
result = this.recognizer.recognizeForVideo(video, ts);
} catch (err) {
console.error('recognizeForVideo failed', err);
return;
}
this.trackFps(ts);
this.publish(result, ts);
};
private trackFps(nowMs: number): void {
this.frameTimes.push(nowMs);
const windowStart = nowMs - 1000;
while (this.frameTimes.length && this.frameTimes[0] < windowStart) {
this.frameTimes.shift();
}
}
private get fps(): number {
if (this.frameTimes.length < 2) return 0;
const span = this.frameTimes[this.frameTimes.length - 1] - this.frameTimes[0];
if (span <= 0) return 0;
return Math.round(((this.frameTimes.length - 1) / span) * 1000);
}
private publish(result: GestureRecognizerResult, ts: number): void {
const allLandmarks = result.landmarks ?? [];
const handedness = result.handedness ?? [];
const gestures = result.gestures ?? [];
const tSec = ts / 1000;
// Surface rect → maps normalized [0,1] coords to surface pixels (X mirrored).
const rect = this.opts.surface.getBoundingClientRect();
const hands: HandState[] = [];
const activeKeys = new Set<string>();
for (let i = 0; i < allLandmarks.length; i++) {
const lm = allLandmarks[i];
if (!lm || lm.length === 0) continue;
// Key by handedness so each hand keeps its own filters across frames.
// Fall back to index, and disambiguate if both hands share a label.
const label = handedness[i]?.[0]?.categoryName ?? `hand${i}`;
let key = label;
if (activeKeys.has(key)) key = `${label}#${i}`;
activeKeys.add(key);
const state = this.handState(key);
const mid = midpoint(lm[LANDMARK.THUMB_TIP], lm[LANDMARK.INDEX_TIP]);
const cursor = {
x: state.cursorX.filter(mid.x, tSec),
y: state.cursorY.filter(mid.y, tSec),
};
const pinchDist = pinchDistance(lm);
const changed = state.pinch.update(pinchDist);
const gesture = gestures[i]?.[0]?.categoryName ?? null;
// Pinch state machine → discrete drag events in surface pixels.
const sx = (1 - cursor.x) * rect.width;
const sy = cursor.y * rect.height;
state.lastX = sx;
state.lastY = sy;
const pointer = { hand: label, x: sx, y: sy };
if (state.pinch.isPinching) {
this.emit(changed ? 'grab' : 'drag', pointer);
} else if (changed) {
this.emit('drop', pointer);
}
hands.push({
handedness: label,
cursor,
pinchDist,
pinching: state.pinch.isPinching,
gesture: gesture && gesture !== 'None' ? gesture : null,
});
}
// Drop state for hands that vanished, so a returning hand starts fresh
// (no snap from a stale filter position) and the map can't grow unbounded.
// If a vanished hand was mid-pinch, emit a drop so nothing stays grabbed.
for (const key of [...this.handStates.keys()]) {
if (activeKeys.has(key)) continue;
const stale = this.handStates.get(key)!;
if (stale.pinch.isPinching) {
this.emit('drop', { hand: stale.label, x: stale.lastX, y: stale.lastY });
}
this.handStates.delete(key);
}
// Discrete commands come from open-hand gestures; ignore a hand that's
// pinching (mid-drag) so a drag can't be misread as a command.
const commandGestures = new Set<string>();
for (const h of hands) {
if (!h.pinching && h.gesture) commandGestures.add(h.gesture);
}
for (const name of this.commands.update(commandGestures, ts)) {
this.emit('command', { name });
}
// Status first so the overlay can read this frame's cursors in `results`.
this.emit('status', {
fps: this.fps,
hands,
haltProgress: this.commands.haltProgress(ts),
});
this.emit('results', { result, timestampMs: ts });
}
}
@@ -0,0 +1,73 @@
// One-Euro filter — low-latency smoothing for noisy interactive signals.
// Heavy smoothing when the value is still (kills jitter), low lag when it moves
// fast. The correct tool for raw landmark streams, which jitter several pixels
// even when the hand is held still.
//
// Reference: Casiez, Roussel, Vogel — "1€ Filter" (CHI 2012),
// http://cristal.univ-lille.fr/~casiez/1euro/
//
// One filter handles a single scalar; use one instance per axis (x, y).
/** Smoothing factor for a low-pass step given a cutoff (Hz) and timestep (s). */
function smoothingAlpha(cutoffHz: number, dtSec: number): number {
const tau = 1 / (2 * Math.PI * cutoffHz);
return 1 / (1 + tau / dtSec);
}
/** Exponential low-pass that remembers its last output. */
class LowPass {
private value: number | null = null;
filter(x: number, alpha: number): number {
this.value = this.value === null ? x : alpha * x + (1 - alpha) * this.value;
return this.value;
}
reset(): void {
this.value = null;
}
get initialized(): boolean {
return this.value !== null;
}
}
export class OneEuroFilter {
private readonly signal = new LowPass();
private readonly derivative = new LowPass();
private lastTimeSec: number | null = null;
private lastRaw = 0;
/**
* @param minCutoff Baseline cutoff (Hz). Lower → smoother but laggier when still.
* @param beta Speed coefficient. Higher → less lag during fast moves.
* @param dCutoff Cutoff for the derivative low-pass (Hz). 1.0 is fine.
*/
constructor(
private minCutoff = 1.0,
private beta = 0.01,
private dCutoff = 1.0
) {}
reset(): void {
this.signal.reset();
this.derivative.reset();
this.lastTimeSec = null;
this.lastRaw = 0;
}
/** @param timeSec strictly-increasing timestamp in seconds. */
filter(x: number, timeSec: number): number {
let dt = this.lastTimeSec === null ? 1 / 60 : timeSec - this.lastTimeSec;
if (dt <= 0) dt = 1 / 60;
this.lastTimeSec = timeSec;
// Rate of change, itself low-passed, drives the adaptive cutoff.
const dRaw = this.signal.initialized ? (x - this.lastRaw) / dt : 0;
this.lastRaw = x;
const edRaw = this.derivative.filter(dRaw, smoothingAlpha(this.dCutoff, dt));
const cutoff = this.minCutoff + this.beta * Math.abs(edRaw);
return this.signal.filter(x, smoothingAlpha(cutoff, dt));
}
}
@@ -0,0 +1,78 @@
// Discrete gesture → command detection.
//
// Maps the recognizer's canned gesture categories onto Codeman commands, with
// debouncing so each command fires once per gesture *entry* (not every frame
// while it's held). Open_Palm is special: it must be held continuously for
// `palmHoldMs` before firing halt-all — a dead-man's-switch that's hard to
// trigger by accident, since pausing every session is a big hammer.
import type { CommandName } from './types.ts';
interface CommandSpec {
name: CommandName;
/** If set, the gesture must be held this long (ms) before it fires. */
holdMs?: number;
}
/** MediaPipe canned gesture category → command. */
const GESTURE_COMMANDS: Record<string, CommandSpec> = {
Open_Palm: { name: 'halt-all', holdMs: -1 }, // holdMs filled from palmHoldMs
Thumb_Up: { name: 'approve' },
Victory: { name: 'new-session' },
};
export class CommandDetector {
/** gesture category → timestamp (ms) it was first seen in the current hold. */
private heldSince = new Map<string, number>();
/** gestures that already fired during the current hold (cleared on release). */
private fired = new Set<string>();
constructor(private palmHoldMs = 1000) {}
reset(): void {
this.heldSince.clear();
this.fired.clear();
}
private holdMsFor(spec: CommandSpec): number {
return spec.holdMs === -1 ? this.palmHoldMs : (spec.holdMs ?? 0);
}
/**
* Feed the set of command-gestures currently shown (across all hands).
* @returns the commands that fired on this frame (usually empty).
*/
update(gestures: Set<string>, nowMs: number): CommandName[] {
// Forget gestures no longer held, so they can re-fire on the next entry.
for (const g of [...this.heldSince.keys()]) {
if (!gestures.has(g)) {
this.heldSince.delete(g);
this.fired.delete(g);
}
}
const fired: CommandName[] = [];
for (const g of gestures) {
const spec = GESTURE_COMMANDS[g];
if (!spec) continue;
const since = this.heldSince.get(g) ?? nowMs;
if (!this.heldSince.has(g)) this.heldSince.set(g, since);
if (this.fired.has(g)) continue;
if (nowMs - since >= this.holdMsFor(spec)) {
fired.push(spec.name);
this.fired.add(g);
}
}
return fired;
}
/** 0–1 charge of the held halt-all gesture (1 once fired, 0 when released). */
haltProgress(nowMs: number): number {
const since = this.heldSince.get('Open_Palm');
if (since === undefined) return 0;
if (this.fired.has('Open_Palm')) return 1;
return Math.min(1, (nowMs - since) / this.palmHoldMs);
}
}
@@ -0,0 +1,78 @@
// MediaPipe hand landmark indices and the bone connections between them.
// See: https://developers.google.com/mediapipe/solutions/vision/hand_landmarker
//
// 21 landmarks per hand, each normalized to [0,1] in image space.
export const LANDMARK = {
WRIST: 0,
THUMB_CMC: 1,
THUMB_MCP: 2,
THUMB_IP: 3,
THUMB_TIP: 4,
INDEX_MCP: 5,
INDEX_PIP: 6,
INDEX_DIP: 7,
INDEX_TIP: 8,
MIDDLE_MCP: 9,
MIDDLE_PIP: 10,
MIDDLE_DIP: 11,
MIDDLE_TIP: 12,
RING_MCP: 13,
RING_PIP: 14,
RING_DIP: 15,
RING_TIP: 16,
PINKY_MCP: 17,
PINKY_PIP: 18,
PINKY_DIP: 19,
PINKY_TIP: 20,
} as const;
/** Pairs of landmark indices that form the hand skeleton, for overlay drawing. */
export const HAND_CONNECTIONS: ReadonlyArray<readonly [number, number]> = [
// Thumb
[0, 1],
[1, 2],
[2, 3],
[3, 4],
// Index
[0, 5],
[5, 6],
[6, 7],
[7, 8],
// Middle
[5, 9],
[9, 10],
[10, 11],
[11, 12],
// Ring
[9, 13],
[13, 14],
[14, 15],
[15, 16],
// Pinky
[13, 17],
[17, 18],
[18, 19],
[19, 20],
// Palm base
[0, 17],
];
export interface NormalizedLandmark {
x: number;
y: number;
z: number;
visibility?: number;
}
/** Euclidean distance between two normalized landmarks (x/y plane). */
export function dist2d(a: NormalizedLandmark, b: NormalizedLandmark): number {
const dx = a.x - b.x;
const dy = a.y - b.y;
return Math.hypot(dx, dy);
}
/** Midpoint of two normalized landmarks (x/y plane). */
export function midpoint(a: NormalizedLandmark, b: NormalizedLandmark): { x: number; y: number } {
return { x: (a.x + b.x) / 2, y: (a.y + b.y) / 2 };
}
@@ -0,0 +1,67 @@
// Pinch detection from hand landmarks.
//
// Distance between thumb tip (4) and index tip (8), normalized by hand size
// (wrist 0 → middle-finger MCP 9) so the threshold is robust to how close the
// hand is to the camera. Hysteresis + N-frame persistence keep the grab/release
// edge from flickering — critical for not "dropping" a tab mid-drag.
import { LANDMARK, dist2d, type NormalizedLandmark } from './landmarks.ts';
/**
* Thumb-tip→index-tip distance as a fraction of hand size. Smaller = more
* pinched. Roughly in [0, ~1.5]; ~0.35 is a firm pinch, ~0.5+ is open.
*/
export function pinchDistance(landmarks: NormalizedLandmark[]): number {
const thumb = landmarks[LANDMARK.THUMB_TIP];
const index = landmarks[LANDMARK.INDEX_TIP];
const wrist = landmarks[LANDMARK.WRIST];
const middleMcp = landmarks[LANDMARK.MIDDLE_MCP];
const handSize = dist2d(wrist, middleMcp) || 1e-6;
return dist2d(thumb, index) / handSize;
}
/**
* Tracks pinch state with two thresholds (hysteresis) and a persistence count.
* Enter a pinch below `onThreshold`; leave it only above `offThreshold`
* (offThreshold > onThreshold). A flip must hold for `persistFrames` frames
* before it commits, rejecting single-frame noise.
*/
export class PinchDetector {
private pinching = false;
private pendingFrames = 0;
constructor(
private onThreshold = 0.35,
private offThreshold = 0.5,
private persistFrames = 2
) {}
reset(): void {
this.pinching = false;
this.pendingFrames = 0;
}
get isPinching(): boolean {
return this.pinching;
}
/** Feed one frame's distance. Returns true if the committed state CHANGED. */
update(distance: number): boolean {
const target = this.pinching
? distance < this.offThreshold // stay pinched until the hand opens wide
: distance < this.onThreshold; // start pinching once fingers close
if (target === this.pinching) {
this.pendingFrames = 0;
return false;
}
this.pendingFrames += 1;
if (this.pendingFrames >= this.persistFrames) {
this.pinching = target;
this.pendingFrames = 0;
return true;
}
return false;
}
}
@@ -0,0 +1,80 @@
// Shared types for the gesture input layer.
//
// Phase 0/1 scope: only `status` and `results` (debug) events are emitted yet.
// The semantic events (hover/grab/drag/drop/command) are declared here so the
// public API shape is stable, but they are wired in later phases.
import type { GestureRecognizerResult } from '@mediapipe/tasks-vision';
export interface GestureControllerOptions {
/** The <video> element the camera stream is attached to. */
video: HTMLVideoElement;
/** Element whose bounding rect normalized coords are mapped against. Defaults to video. (Used from Phase 2.) */
surface?: HTMLElement;
/** Number of hands to track. v1 = 1. */
numHands?: number;
/** Pinch hysteresis thresholds (fractions of hand-size). Used from Phase 2. */
pinchOn?: number;
pinchOff?: number;
/** One-Euro cursor smoothing. Lower minCutoff = smoother/laggier when still;
* higher beta = less lag during fast moves. Used from Phase 2. */
minCutoff?: number;
beta?: number;
/** How long Open_Palm must be held to fire halt-all. Used from Phase 4. */
palmHoldMs?: number;
/** Specific camera to open (from enumerateDevices). Empty = default facingMode "user". */
deviceId?: string;
/** MediaPipe detection/tracking confidence. */
minDetectionConfidence?: number;
minTrackingConfidence?: number;
/** CDN base used to load the wasm fileset + .task model. */
wasmBase?: string;
modelUrl?: string;
}
export type CommandName = 'halt-all' | 'approve' | 'new-session';
/** Per-hand state for the current frame. */
export interface HandState {
/** "Left" / "Right" as reported by MediaPipe (image-space). Used to key filters. */
handedness: string;
/** Smoothed cursor in raw (unmirrored) normalized [0,1] coords; consumers mirror X. */
cursor: { x: number; y: number };
/** Thumb/index distance as a fraction of hand size. */
pinchDist: number;
/** Whether this hand is currently pinching (after hysteresis). */
pinching: boolean;
/** Top gesture category for this hand, if any. */
gesture: string | null;
}
/** A pointer sample for one hand, in surface pixel coords (origin = surface
* top-left, X already mirrored to match the displayed video). */
export interface HandPointer {
hand: string;
x: number;
y: number;
}
/** Payloads emitted per event name. */
export interface GestureEventMap {
/** Pinch just closed — start of a drag. */
grab: HandPointer;
/** Cursor moved while pinched — emitted every frame during a drag. */
drag: HandPointer;
/** Pinch released (or the hand vanished mid-pinch) — end of a drag. */
drop: HandPointer;
command: { name: CommandName };
status: {
fps: number;
/** One entry per detected hand (0–`numHands`). */
hands: HandState[];
/** 0–1 charge of the held Open_Palm halt-all gesture (Phase 4). */
haltProgress: number;
};
/** Debug-only: the raw recognizer result for the current frame (drives the overlay). */
results: { result: GestureRecognizerResult; timestampMs: number };
}
export type GestureEventName = keyof GestureEventMap;
export type GestureEventHandler<K extends GestureEventName> = (payload: GestureEventMap[K]) => void;
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// Phase 3 demo wiring.
//
// - Start button (camera requires a user gesture) + live camera picker.
// - Mirrored video preview + debug overlay (skeleton + per-hand cursors).
// - Live HUD: fps / hands / pinch distance / gesture.
// - Tab board: pinch-drag session tabs between Screen columns.
import { GestureController } from './gesture/GestureController.ts';
import { Overlay, type CursorMark } from './demo/overlay.ts';
import { TabsBoard } from './demo/tabs.ts';
import type { HandState } from './gesture/types.ts';
// Cyan for the left hand, violet for the right; green takes over while pinching.
const handColor = (handedness: string): string => (handedness === 'Right' ? '#a78bfa' : '#38bdf8');
const video = document.getElementById('cam') as HTMLVideoElement;
const canvas = document.getElementById('overlay') as HTMLCanvasElement;
const stage = document.getElementById('stage') as HTMLDivElement;
const boardEl = document.getElementById('board') as HTMLDivElement;
const startBtn = document.getElementById('start') as HTMLButtonElement;
const stopBtn = document.getElementById('stop') as HTMLButtonElement;
const fullscreenBtn = document.getElementById('fullscreen') as HTMLButtonElement;
const cameraSel = document.getElementById('camera') as HTMLSelectElement;
const fpsEl = document.getElementById('fps') as HTMLSpanElement;
const handEl = document.getElementById('hand') as HTMLSpanElement;
const pinchEl = document.getElementById('pinch') as HTMLSpanElement;
const gestureEl = document.getElementById('gesture') as HTMLSpanElement;
const statusEl = document.getElementById('status-msg') as HTMLParagraphElement;
const overlay = new Overlay(canvas, video);
// Coords map against the stage rect (the board overlays it exactly).
const gc = new GestureController({ video, surface: stage, numHands: 2 });
const board = new TabsBoard(boardEl, (tabId, columnId) => {
statusEl.textContent = columnId
? `Moved “${tabId}” → ${columnId}`
: `“${tabId}” dropped outside a column — returned.`;
});
// The board drives off discrete grab/drag/drop; hover highlight off `status`.
gc.on('grab', ({ hand, x, y }) => board.grab(hand, x, y));
gc.on('drag', ({ hand, x, y }) => board.drag(hand, x, y));
gc.on('drop', ({ hand, x, y }) => board.drop(hand, x, y));
// Discrete gesture commands (halt-all / approve / new-session) are intentionally
// not wired up here — this build is pinch-drag only. The controller still emits
// `command`/`haltProgress`, but nothing consumes them, so an open palm, thumb,
// or victory sign does nothing.
// Cached from `status` so the `results` handler draws the same frame's cursors.
let cursors: CursorMark[] = [];
let started = false;
gc.on('results', ({ result }) => {
overlay.draw(result, cursors);
});
gc.on('status', ({ fps, hands }) => {
cursors = hands.map((h) => ({
x: h.cursor.x,
y: h.cursor.y,
color: handColor(h.handedness),
pinching: h.pinching,
}));
// Hover highlights from the full per-frame snapshot (surface px, X mirrored).
const rect = stage.getBoundingClientRect();
board.hover(
hands.map((h) => ({
x: (1 - h.cursor.x) * rect.width,
y: h.cursor.y * rect.height,
pinching: h.pinching,
}))
);
fpsEl.textContent = String(fps);
fpsEl.style.color = fps >= 25 ? '#4ade80' : fps > 0 ? '#fbbf24' : '#f87171';
const anyPinching = hands.some((h) => h.pinching);
handEl.textContent = hands.length ? hands.map((h) => h.handedness).join(' + ') : 'no';
handEl.style.color = hands.length ? '#4ade80' : '#94a3b8';
pinchEl.textContent = hands.length ? hands.map(pinchLabel).join(' ') : '—';
pinchEl.style.color = anyPinching ? '#4ade80' : '#94a3b8';
gestureEl.textContent =
hands
.filter((h) => h.gesture)
.map((h) => h.gesture)
.join(', ') || '—';
});
/** e.g. "L 0.34●" — first letter of handedness, distance, dot when pinching. */
function pinchLabel(h: HandState): string {
return `${h.handedness[0]} ${h.pinchDist.toFixed(2)}${h.pinching ? '●' : ''}`;
}
startBtn.addEventListener('click', async () => {
startBtn.disabled = true;
statusEl.textContent = 'Requesting camera + loading model…';
try {
await gc.start();
started = true;
statusEl.textContent = 'Running. Pinch-drag tabs between Screens.';
stopBtn.disabled = false;
await populateCameras();
} catch (err) {
console.error(err);
statusEl.textContent = `Failed to start: ${(err as Error).message}`;
startBtn.disabled = false;
}
});
stopBtn.addEventListener('click', () => {
gc.stop();
started = false;
overlay.clear();
board.hover([]);
cursors = [];
statusEl.textContent = 'Stopped.';
startBtn.disabled = false;
stopBtn.disabled = true;
cameraSel.disabled = true;
fpsEl.textContent = '0';
handEl.textContent = 'no';
pinchEl.textContent = '—';
gestureEl.textContent = '—';
});
// Switch cameras live. On macOS the iPhone (Continuity Camera) shows up as
// "iPhone Camera" plus a separate "Desk View Camera" (the ultra-wide lens).
cameraSel.addEventListener('change', async () => {
statusEl.textContent = `Switching to ${cameraSel.selectedOptions[0]?.text}…`;
try {
await gc.useCamera(cameraSel.value);
statusEl.textContent = 'Running.';
// Activating the iPhone can surface its Desk View device — re-check.
await populateCameras();
} catch (err) {
console.error(err);
statusEl.textContent = `Couldn't switch camera: ${(err as Error).message}`;
}
});
// Cameras come and go (iPhone mounted/unmounted, Desk View appearing). Keep
// the dropdown in sync whenever the device set changes.
navigator.mediaDevices?.addEventListener('devicechange', () => {
if (started) void populateCameras();
});
// Fullscreen the stage so the board (and grab targets) fill the display.
// Standard API with a webkit fallback for Safari.
type WebkitEl = HTMLElement & { webkitRequestFullscreen?: () => Promise<void> };
type WebkitDoc = Document & {
webkitFullscreenElement?: Element | null;
webkitExitFullscreen?: () => Promise<void>;
};
function fullscreenElement(): Element | null {
return document.fullscreenElement ?? (document as WebkitDoc).webkitFullscreenElement ?? null;
}
fullscreenBtn.addEventListener('click', () => {
if (fullscreenElement()) {
(document.exitFullscreen ?? (document as WebkitDoc).webkitExitFullscreen)?.call(document);
} else {
const el = stage as WebkitEl;
(el.requestFullscreen ?? el.webkitRequestFullscreen)?.call(el);
}
});
function syncFullscreenLabel(): void {
fullscreenBtn.textContent = fullscreenElement() ? '⤢ Exit fullscreen' : '⛶ Fullscreen';
}
document.addEventListener('fullscreenchange', syncFullscreenLabel);
document.addEventListener('webkitfullscreenchange', syncFullscreenLabel);
/** Fill the camera dropdown; labels appear only after camera permission. */
async function populateCameras(): Promise<void> {
const cams = await gc.listCameras();
cameraSel.innerHTML = '';
cams.forEach((cam, i) => {
const opt = document.createElement('option');
opt.value = cam.deviceId;
opt.text = cam.label || `Camera ${i + 1}`;
if (cam.deviceId === gc.deviceId) opt.selected = true;
cameraSel.append(opt);
});
cameraSel.disabled = cams.length < 2;
}
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{
"compilerOptions": {
"target": "ES2020",
"useDefineForClassFields": true,
"module": "ESNext",
"lib": ["ES2020", "DOM", "DOM.Iterable"],
"skipLibCheck": true,
"moduleResolution": "bundler",
"allowImportingTsExtensions": true,
"resolveJsonModule": true,
"isolatedModules": true,
"moduleDetection": "force",
"noEmit": true,
"strict": true,
"noUnusedLocals": true,
"noUnusedParameters": true,
"noFallthroughCasesInSwitch": true
},
"include": ["src"]
}
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import { defineConfig } from 'vite';
// getUserMedia requires a secure context. http://localhost counts as secure,
// so the dev server below is fine. If you serve to another device, use https.
export default defineConfig({
root: '.',
server: {
host: 'localhost',
port: 5173,
open: true,
},
});
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#!/usr/bin/env node
/**
* @fileoverview Build the opt-in gesture-overlay bundle from its vendored source
* in `packages/gesture-control/` into the web bundle Codeman actually serves,
* `src/web/public/gesture/gesture-codeman.js`.
*
* The source lives in this repo (workspace package `codeman-gesture-control`,
* was the standalone `Ark0N/codeman-gesture-control` repo before it was vendored
* in). `src/codeman/entry.ts` is the Codeman *consumer* entry — it imports the
* transport-agnostic gesture core (`src/gesture/*`) and maps grab/drag/drop onto
* Codeman's real session tabs + toolbar buttons. esbuild bundles it (MediaPipe
* tasks-vision JS included) into a single ESM file; the MediaPipe wasm + model
* are loaded at runtime from same-origin `/gesture/wasm` + `/gesture/*.task`
* (fetched separately by scripts/fetch-gesture-assets.mjs), NOT bundled here.
*
* Run it after editing anything under packages/gesture-control/src/ and commit
* the regenerated bundle (the committed copy is what `npm run dev` / tsx serves,
* since the web UI ships as plain JS with no bundler). `npm run build` also runs
* this so a production build always reflects the current source.
*
* Usage: node scripts/build-gesture-bundle.mjs [--out <path>]
* --out output file (default src/web/public/gesture/gesture-codeman.js)
*
* NOT minified — matches the historical bundle and keeps it debuggable; the
* build's compress step gzips/brotlis it for production anyway.
*/
import { build } from 'esbuild';
import { fileURLToPath } from 'node:url';
import { join, dirname, isAbsolute } from 'node:path';
const ROOT = join(dirname(fileURLToPath(import.meta.url)), '..');
const ENTRY = join(ROOT, 'packages/gesture-control/src/codeman/entry.ts');
const DEFAULT_OUT = join(ROOT, 'src/web/public/gesture/gesture-codeman.js');
const outArg = process.argv[process.argv.indexOf('--out') + 1];
const outfile =
process.argv.includes('--out') && outArg
? isAbsolute(outArg)
? outArg
: join(process.cwd(), outArg)
: DEFAULT_OUT;
await build({
entryPoints: [ENTRY],
bundle: true,
format: 'esm',
target: 'es2020',
outfile,
logLevel: 'info',
});
console.log(`[gesture] bundle built → ${outfile}`);
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@@ -35,6 +35,9 @@ run('prepare dirs', 'mkdir -p dist/web dist/templates dist/web/public/vendor');
// Fetch the opt-in gesture overlay's MediaPipe wasm + model into src/ (idempotent,
// non-fatal, kept out of git) so the copy below carries them into dist/.
run('gesture assets', 'node scripts/fetch-gesture-assets.mjs');
// Rebuild the gesture overlay bundle from its vendored source (packages/gesture-control)
// into src/web/public/gesture/gesture-codeman.js, so prod always reflects current source.
run('gesture bundle', 'node scripts/build-gesture-bundle.mjs');
run('copy web assets', 'cp -r src/web/public dist/web/');
run('copy template', 'cp src/templates/case-template.md dist/templates/');
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