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Monorepo for Aesthetic.Computer aesthetic.computer
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586// Visible charge and a sine bell that accelerates below 10%.export function batteryWarningInterval(percent) { return Number.isFinite(percent) && percent >= 0 && percent <= 10 ? Math.max(1, percent * 3) : null;}
export function createBatteryWatch() { let lastDing = -Infinity, lastTime = -Infinity; let percent = null, charging = false, pluggedIn = false, interval = null, now = 0; let powerAt = -Infinity, powerPaths; let voices = [];
function update({ system, sound }) { const value = system?.battery?.percent; percent = Number.isFinite(value) && value >= 0 && value <= 100 ? value : null; charging = system?.battery?.charging === true; interval = batteryWarningInterval(percent); now = Number.isFinite(sound?.time) ? sound.time : 0; if (now < powerAt || now - powerAt >= 1) { powerAt = now; let known = false, online = false; try { powerPaths = (system?.listDir?.('/sys/class/power_supply') || []) .map(entry => `/sys/class/power_supply/${entry.name}/online`); for (const path of powerPaths) { const value = system?.readFile?.(path)?.trim(); if (value === '0' || value === '1') { known = true; online ||= value === '1'; } } } catch {} pluggedIn = typeof system?.battery?.pluggedIn === 'boolean' ? system.battery.pluggedIn : known ? online : charging; } if (now < lastTime || interval === null) lastDing = -Infinity; lastTime = now; if (interval !== null && sound?.synth && now - lastDing >= interval) { lastDing = now; voices = [ sound.synth({ type: 'sine', tone: 880, volume: .16, duration: .45, attack: .004, decay: .42 }), sound.synth({ type: 'sine', tone: 2200, volume: .045, duration: .22, attack: .002, decay: .20 }), ]; } return { percent, charging, pluggedIn, interval }; }
function paint({ ink, box, write, screen }) { const low = interval !== null; const label = percent === null ? '--%' : `${Math.round(percent)}%`; const size = Math.max(2, Math.floor(Math.min(screen.width / (low ? 48 : 96), screen.height / (low ? 18 : 48)))); const unit = Math.max(1, Math.floor(size / 2)); const pad = Math.max(6, unit * 2); const bellWidth = low ? unit * 13 : 0; const boltWidth = pluggedIn ? unit * 10 : 0; const width = label.length * 6 * size + pad * 2 + bellWidth + boltWidth; const height = 10 * size + pad * 2; const x = Math.max(0, screen.width - width - pad), y = pad; const pulseHz = low ? 1 + (10 - percent) / 10 : 0; const bright = low && Math.floor(now * pulseHz * 2) % 2 === 0; ink(...(bright ? [185, 12, 35] : [8, 10, 18])); box(x, y, width, height, 'fill'); ink(...(low ? (bright ? [255, 255, 230] : [255, 90, 100]) : (charging ? [145, 255, 190] : [255, 255, 255]))); box(x, y, width, height, 'outline'); write(label, { x: x + pad + bellWidth, y: y + pad, font: '6x10', size }); if (pluggedIn) { const bx = x + pad + bellWidth + label.length * 6 * size + unit; const by = y + Math.floor((height - 10 * unit) / 2); for (const [row, start, length] of [[0,4,3],[1,3,3],[2,2,3],[3,1,5],[4,0,7],[5,3,3],[6,2,3],[7,1,3],[8,1,2],[9,0,2]]) box(bx + start * unit, by + row * unit, length * unit, unit, 'fill'); } if (low) { const bx = x + pad + Math.round(Math.sin(now * pulseHz * Math.PI * 2) * unit); const by = y + Math.floor((height - 10 * unit) / 2); // Run-length rows of a pixel bell; nine filled rectangles per frame. for (const [row, start, length] of [[0,4,2],[1,3,4],[2,2,6],[3,2,6],[4,2,6],[5,1,8],[6,0,10],[8,4,2],[9,4,2]]) box(bx + start * unit, by + row * unit, length * unit, unit, 'fill'); } }
function leave() { for (const voice of voices) voice?.kill?.(.03); voices = []; }
return { update, paint, leave };}