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Monorepo for Aesthetic.Computer aesthetic.computer
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JavaScript
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const REAL_CURSOR = process.env.CAPTUTOR_REAL_CURSOR === "1";const POINTER_BIN = process.env.CAPTUTOR_POINTER || join(homedir(), ".local", "bin", "captutor-pointer");const NATIVE_CURSOR_BIN = process.env.CAPTUTOR_NATIVE_CURSOR || join(homedir(), ".local", "bin", "captutor-cursor");const NO_CURSOR = process.env.CAPTUTOR_CURSOR === "none";const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
let nativeCursor = null;let nativeCursorFailure = null;let nativeCursorReady = null;
export async function startNativeCursor() { if (REAL_CURSOR || NO_CURSOR) return; if (nativeCursor) return nativeCursorReady; if (!existsSync(NATIVE_CURSOR_BIN)) { throw new Error( `native Captutor cursor is not installed at ${NATIVE_CURSOR_BIN}; enter Stage Mode or run captutor/bin/install.sh`, ); } nativeCursorFailure = null; const child = spawn(NATIVE_CURSOR_BIN, [], { stdio: ["pipe", "pipe", "inherit"], }); nativeCursor = child; nativeCursorReady = new Promise((resolve, reject) => { const timeout = setTimeout(() => reject(new Error("native Captutor cursor did not become ready")), 3000); child.stdout.once("data", (chunk) => { clearTimeout(timeout); if (String(chunk).includes("ready")) resolve(); else reject(new Error("native Captutor cursor returned an invalid readiness response")); }); child.once("error", (error) => { clearTimeout(timeout); reject(error); }); }); child.once("error", (error) => { if (nativeCursor === child) nativeCursorFailure = error; }); child.once("exit", (code, signal) => { if (nativeCursor === child) { if (code && !nativeCursorFailure) { nativeCursorFailure = new Error(`native Captutor cursor exited (${code}${signal ? `, ${signal}` : ""})`); } nativeCursor = null; nativeCursorReady = null; } }); return nativeCursorReady;}
function nativeCommand(op, values = {}) { if (REAL_CURSOR || NO_CURSOR) return; if (nativeCursorFailure) throw nativeCursorFailure; if (!nativeCursor?.stdin?.writable) throw new Error("native Captutor cursor is unavailable"); nativeCursor.stdin.write(`${JSON.stringify({ op, ...values })}\n`);}
export function stopNativeCursor() { if (!nativeCursor) return; if (nativeCursor.stdin.writable) { nativeCursor.stdin.write(`${JSON.stringify({ op: "hide" })}\n`); nativeCursor.stdin.write(`${JSON.stringify({ op: "quit" })}\n`); nativeCursor.stdin.end(); } nativeCursor = null; nativeCursorReady = null;}
async function moveRealPointer(cdp, point, durationMs) { const geometry = await cdp.eval(`({ screenX, screenY, outerWidth, outerHeight, innerWidth, innerHeight })`); moveRealPointerWithGeometry(geometry, point, durationMs);}
export function pagePointToScreen(geometry, point) { const borderX = Math.max(0, (geometry.outerWidth - geometry.innerWidth) / 2); const chromeY = Math.max(0, geometry.outerHeight - geometry.innerHeight - borderX); return { x: geometry.screenX + borderX + point.x, y: geometry.screenY + chromeY + point.y, };}
function moveRealPointerWithGeometry(geometry, point, durationMs) { const { x, y } = pagePointToScreen(geometry, point); execFileSync(POINTER_BIN, [String(x), String(y), String(durationMs)]);}
async function moveNativePointer(cdp, point, durationMs, geometry = null) { await startNativeCursor(); const measured = geometry || await cdp.eval(`({ screenX, screenY, outerWidth, outerHeight, innerWidth, innerHeight })`); const screen = pagePointToScreen(measured, point); nativeCommand("move", { x: screen.x, y: screen.y, durationMs }); await sleep(durationMs);}
// A long-running generation is still an action. Hold the cursor over its blue// progress control and give it a small native figure-eight until the next move// takes over. No browser click or DOM mutation is sent.export async function dillydallyAtPoint(cdp, point, { offsetX = 0, offsetY = 0, durationMs = 0,} = {}) { if (REAL_CURSOR || NO_CURSOR) return; await startNativeCursor(); const viewport = await cdp.eval(`({ width:innerWidth, height:innerHeight })`); const pagePoint = { x: Math.max(12, Math.min(viewport.width - 28, point.x + Number(offsetX))), y: Math.max(12, Math.min(viewport.height - 28, point.y + Number(offsetY))), }; const geometry = await cdp.eval(`({ screenX, screenY, outerWidth, outerHeight, innerWidth, innerHeight })`); const screen = pagePointToScreen(geometry, pagePoint); nativeCommand("dillydally", { x:screen.x, y:screen.y, durationMs }); await cdp.mouse("mouseMoved", pagePoint.x, pagePoint.y);}
async function pointWithin(cdp, selector, { anchorX = 0.5, anchorY = 0.5 } = {}) { // Let Session.center provide its normal wait/retry behavior first. Anchored // points are intentionally CSS-only: text=/js= selectors name an element by // computation, while an anchor is for a stable physical region of a node. const center = await cdp.center(selector); if (anchorX === 0.5 && anchorY === 0.5) return center; if (selector.startsWith("text=") || selector.startsWith("js=")) { throw new Error("anchored cursor points require a CSS selector"); } const point = await cdp.eval(`(() => { const element = document.querySelector(${JSON.stringify(selector)}); if (!element) return null; const rect = element.getBoundingClientRect(); const preferred = { x: rect.left + rect.width * ${Number(anchorX)}, y: rect.top + rect.height * ${Number(anchorY)}, }; const ownsHit = (point) => { const hit = document.elementFromPoint(point.x, point.y); return hit === element || element.contains(hit); }; if (ownsHit(preferred)) return { ...preferred, adjusted:false };
// A pane fills the viewport *behind* floating controls. A mathematically // valid anchor can therefore land on the credit counter, chat composer, or // another overlay. Search outward for the nearest point whose topmost hit // really belongs to the requested element; never click through an overlay. const step = 24; for (let radius = 1; radius <= 14; radius += 1) { for (let dx = -radius; dx <= radius; dx += 1) { for (const dy of [-radius, radius]) { const candidate = { x:Math.max(rect.left + 4, Math.min(rect.right - 4, preferred.x + dx * step)), y:Math.max(rect.top + 4, Math.min(rect.bottom - 4, preferred.y + dy * step)), }; if (ownsHit(candidate)) return { ...candidate, adjusted:true, requested:preferred }; } } for (let dy = -radius + 1; dy < radius; dy += 1) { for (const dx of [-radius, radius]) { const candidate = { x:Math.max(rect.left + 4, Math.min(rect.right - 4, preferred.x + dx * step)), y:Math.max(rect.top + 4, Math.min(rect.bottom - 4, preferred.y + dy * step)), }; if (ownsHit(candidate)) return { ...candidate, adjusted:true, requested:preferred }; } } } return { blocked:true, requested:preferred, hit:document.elementFromPoint(preferred.x, preferred.y)?.outerHTML?.slice(0, 240) || '' }; })()`); if (!point || point.blocked) { const error = new Error(`target is visually occluded: ${selector} ${JSON.stringify(point)}`); error.code = "OCCLUDED_TARGET"; error.telemetry = { selector, point }; throw error; } return point;}
/// Glide the native pointer to an element and land a TRUSTED click at the same/// tip coordinate. Swift adds the small visual response after the UI commits.export async function clickOn( cdp, selector, { moveMs = 520, settleMs = 140, orbitMs = 1150, anchorX = 0.5, anchorY = 0.5 } = {},) { // Measure, glide, then MEASURE AGAIN before committing the click. // // The glide takes ~half a second, and half a second is a long time in a React // app that is still settling: a toolbar reflows, a list re-renders, and the // coordinate we measured now points at empty canvas — or worse, at whatever // slid into that spot. (drive-ui.md hit the same edge and added a stray node.) // A trusted click goes to a POINT, not to an element, so the point has to be // fresh. The cursor lands wherever the target ended up. const geometry = (!REAL_CURSOR && !NO_CURSOR) ? await cdp.eval(`({ screenX, screenY, outerWidth, outerHeight, innerWidth, innerHeight })`) : null; const first = await pointWithin(cdp, selector, { anchorX, anchorY }); if (REAL_CURSOR) { await moveRealPointer(cdp, first, moveMs); // CGWarpMouseCursorPosition can leave one final native hover event queued. // Let it drain before the trusted CDP click, or that late event can land on // the canvas pane and immediately clear the node selection we just made. await new Promise((resolve) => setTimeout(resolve, 180)); } else if (!NO_CURSOR) await moveNativePointer(cdp, first, moveMs, geometry);
const now = await pointWithin(cdp, selector, { anchorX, anchorY }); if (Math.hypot(now.x - first.x, now.y - first.y) > 2) { if (REAL_CURSOR) { await moveRealPointer(cdp, now, 120); await new Promise((resolve) => setTimeout(resolve, 180)); } else if (!NO_CURSOR) await moveNativePointer(cdp, now, 120, geometry); }
// Measure before the trusted click. Picker result cards intentionally // disappear when chosen, but their pre-click bounds are the exact shape the // cursor should present afterward. const presentationBounds = (!REAL_CURSOR && !NO_CURSOR && orbitMs > 0) ? await cdp.bounds(selector, { waitMs:1500 }) : null;
nativeCommand("down"); try { await cdp.mouse("mouseMoved", now.x, now.y); await cdp.mouse("mousePressed", now.x, now.y); await cdp.mouse("mouseReleased", now.x, now.y); } finally { nativeCommand("up"); } nativeCommand("click"); if (presentationBounds && presentationBounds.width <= 600 && presentationBounds.height <= 300) { const rect = presentationBounds; const topLeft = pagePointToScreen(geometry, { x:rect.x, y:rect.y }); nativeCommand("orbit", { x:topLeft.x + rect.width / 2, y:topLeft.y + rect.height / 2, width:rect.width, height:rect.height, durationMs:orbitMs, }); await sleep(orbitMs); } await new Promise((r) => setTimeout(r, settleMs)); return now; // where the action landed — the vertical cut crops to follow it}
/// Move without clicking — for "notice this" beats, where the narration points/// at something the viewer should look at but we are not about to press.export async function pointAt( cdp, selector, { moveMs = 620, anchorX = 0.5, anchorY = 0.5, offsetX = 0, offsetY = 0 } = {},) { const base = selector.startsWith("text=") || selector.startsWith("js=") ? await cdp.center(selector) : await pointWithin(cdp, selector, { anchorX, anchorY }); const viewport = await cdp.eval(`({ width:innerWidth, height:innerHeight })`); // Presentation anchors may sit slightly outside a target (for example 1.08 // on its right edge). Clamp only to the visible filming viewport. const x = Math.max(12, Math.min(viewport.width - 28, base.x + Number(offsetX))); const y = Math.max(12, Math.min(viewport.height - 28, base.y + Number(offsetY))); if (REAL_CURSOR) await moveRealPointer(cdp, { x, y }, moveMs); else if (!NO_CURSOR) await moveNativePointer(cdp, { x, y }, moveMs); // Keep the page's pointer state aligned with the native pointer. Besides // making hover treatments truthful, this gives ScreenCaptureKit a compositor // change to record during an otherwise static, pointer-only beat. await cdp.mouse("mouseMoved", x, y); return { x, y, selector, anchorX, anchorY, offsetX, offsetY };}
/// Drag from one live element to another while keeping the filmed pointer and/// the trusted browser event on the same eased path. This is the core gesture/// for teaching node graphs: a connection should visibly travel from an output/// socket to its compatible input, not appear through a synthetic state edit.export async function dragBetween( cdp, fromSelector, toSelector, { moveMs = 520, dragMs = 760, steps = 24, settleMs = 220 } = {},) { const first = await cdp.center(fromSelector); if (REAL_CURSOR) await moveRealPointer(cdp, first, moveMs); else if (!NO_CURSOR) await moveNativePointer(cdp, first, moveMs);
// Re-measure after the pointer arrives. Hovering a Fuser socket enlarges it, // and React can settle the target node during the approach. const from = await cdp.center(fromSelector, { waitMs: 1500 }); const to = await cdp.center(toSelector, { waitMs: 1500 }); const viewport = await cdp.eval(`({ width:innerWidth, height:innerHeight })`); if (from.x < 0 || from.y < 0 || from.x > viewport.width || from.y > viewport.height) { const error = new Error( `drag start is outside the browser viewport: ${JSON.stringify({ from, viewport, fromSelector })}`, ); error.code = "OFFSCREEN_DRAG_START"; error.telemetry = { from, to, viewport, fromSelector, toSelector }; throw error; } const geometry = (REAL_CURSOR || !NO_CURSOR) ? await cdp.eval(`({ screenX, screenY, outerWidth, outerHeight, innerWidth, innerHeight })`) : null;
await cdp.send("Input.dispatchMouseEvent", { type: "mouseMoved", x: from.x, y: from.y, button: "left", buttons: 0, }); nativeCommand("down"); let released = false; try { await cdp.send("Input.dispatchMouseEvent", { type: "mousePressed", x: from.x, y: from.y, button: "left", buttons: 1, clickCount: 1, });
const ease = (t) => (t < 0.5 ? 4 * t * t * t : 1 - Math.pow(-2 * t + 2, 3) / 2); for (let index = 1; index <= steps; index += 1) { const k = ease(index / steps); const point = { x: from.x + (to.x - from.x) * k, y: from.y + (to.y - from.y) * k, }; if (REAL_CURSOR) { moveRealPointerWithGeometry(geometry, point, Math.max(12, dragMs / steps)); } else if (!NO_CURSOR) { await moveNativePointer(cdp, point, Math.max(12, dragMs / steps), geometry); } await cdp.send("Input.dispatchMouseEvent", { type: "mouseMoved", x: point.x, y: point.y, button: "left", buttons: 1, }); }
await cdp.send("Input.dispatchMouseEvent", { type: "mouseReleased", x: to.x, y: to.y, button: "left", buttons: 0, clickCount: 1, }); released = true; } finally { if (!released) { await cdp.send("Input.dispatchMouseEvent", { type: "mouseReleased", x: to.x, y: to.y, button: "left", buttons: 0, clickCount: 1, }).catch(() => {}); } nativeCommand("up"); } await new Promise((resolve) => setTimeout(resolve, settleMs)); return { from, to, viewport };}
/// Click, then type into the focused field at a legible cadence.export async function typeInto(cdp, selector, text) { const at = await clickOn(cdp, selector); await cdp.type(text); return at;}