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Monorepo for Aesthetic.Computer aesthetic.computer
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3.8 kB · 95 lines
Swift
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596// MenuBarCD.swift — JukeWizard's presence in the macOS menu bar: a little// compact disc that lives up top even when the window is closed, and SPINS// while a track plays — its rate locked to the track's BPM (one revolution// every two beats, so the speed visibly tracks the tempo). Click it to// show/hide the JukeWizard window; it sits near DateWizard's wand.import AppKit
final class MenuBarCD { private let statusItem: NSStatusItem private let baseImage: NSImage private var timer: Timer? private var angle: CGFloat = 0 // degrees, clockwise private var bpm: Double = 120 private var playing = false private let side: CGFloat = 18 private let beatsPerRev: Double = 2 // one turn per two beats
var onClick: (() -> Void)?
init() { statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength) baseImage = MenuBarCD.loadCD(side: side) if let b = statusItem.button { b.image = baseImage b.imageScaling = .scaleProportionallyDown b.toolTip = "JukeWizard" b.target = self b.action = #selector(clicked) } }
private static func loadCD(side: CGFloat) -> NSImage { let bundle = Bundle.module let url = bundle.url(forResource: "jukewizard-cd", withExtension: "png", subdirectory: "Assets") ?? bundle.url(forResource: "jukewizard-cd", withExtension: "png") let img = (url.flatMap { NSImage(contentsOf: $0) }) ?? NSImage(size: NSSize(width: side, height: side)) img.size = NSSize(width: side, height: side) img.isTemplate = false // keep the iridescent color in the bar return img }
@objc private func clicked() { onClick?() }
// Feed the current track tempo; clamped to a sane spin range. func setBPM(_ b: Double?) { let v = b ?? 120 bpm = min(200, max(40, v.isFinite && v > 0 ? v : 120)) }
// Start/stop the spin on a playback-state change (idempotent). func setPlaying(_ p: Bool) { guard p != playing else { return } playing = p if p { startSpin() } else { stopSpin() } }
private func startSpin() { timer?.invalidate() // ~30 fps; smooth enough for a small bar glyph, cheap to redraw. let t = Timer(timeInterval: 1.0 / 30.0, repeats: true) { [weak self] _ in self?.tick() } RunLoop.main.add(t, forMode: .common) // keep spinning during menu tracking / resize timer = t }
private func stopSpin() { timer?.invalidate(); timer = nil angle = 0 statusItem.button?.image = baseImage // settle upright when paused }
private func tick() { // revolutions per second = (bpm/60) / beatsPerRev → degrees per frame at 30 fps let degPerFrame = 360.0 * (bpm / 60.0) / beatsPerRev / 30.0 angle -= CGFloat(degPerFrame) // clockwise, like a turntable if angle <= -360 { angle += 360 } statusItem.button?.image = rotated(baseImage, by: angle) }
private func rotated(_ img: NSImage, by deg: CGFloat) -> NSImage { let size = img.size let out = NSImage(size: size) out.lockFocus() NSGraphicsContext.current?.imageInterpolation = .high let t = NSAffineTransform() t.translateX(by: size.width / 2, yBy: size.height / 2) t.rotate(byDegrees: deg) t.translateX(by: -size.width / 2, yBy: -size.height / 2) t.concat() img.draw(at: .zero, from: NSRect(origin: .zero, size: size), operation: .sourceOver, fraction: 1) out.unlockFocus() out.isTemplate = false return out }}