Add a black and white Monero app icon

2026-09-22 22:28:46 +08:00
parent c0903f4f02
commit e9720391b7
8 changed files with 142 additions and 0 deletions
@@ -0,0 +1,81 @@
+// Regenerates the app icon PNGs from the same geometry as Branding/logo.svg.
+//
+//   cd apps/ios
+//   swift Branding/make-icons.swift Koins/Assets.xcassets/AppIcon.appiconset
+//
+// iOS cannot use SVG for app icons, so the SVG is the source artwork and this
+// script produces the raster the asset catalog needs. It also writes
+// Branding/logo-light.png (white ground, black mark).
+import AppKit
+import CoreGraphics
+import Foundation
+
+// Draws the same geometry as Branding/logo.svg with CoreGraphics, because iOS
+// app icons must be raster images.
+func drawIcon(size: CGFloat, inverted: Bool = false) -> CGImage? {
+  let scale = size / 1024.0
+  let colorSpace = CGColorSpaceCreateDeviceRGB()
+  guard let context = CGContext(data: nil,
+                               width: Int(size),
+                               height: Int(size),
+                               bitsPerComponent: 8,
+                               bytesPerRow: 0,
+                               space: colorSpace,
+                               bitmapInfo: CGImageAlphaInfo.noneSkipLast.rawValue) else { return nil }
+
+  let background = inverted ? NSColor.white : NSColor.black
+  let foreground = inverted ? NSColor.black : NSColor.white
+  context.setFillColor(background.cgColor)
+  context.fill(CGRect(x: 0, y: 0, width: size, height: size))
+
+  context.setStrokeColor(foreground.cgColor)
+  context.setLineWidth(118 * scale)
+  context.setLineCap(.butt)
+  context.setLineJoin(.miter)
+
+  func point(_ x: CGFloat, _ y: CGFloat) -> CGPoint {
+    // SVG y grows downwards, CoreGraphics grows upwards.
+    CGPoint(x: x * scale, y: size - y * scale)
+  }
+
+  // Left leg continuing into the central V (one path, so the top corner is a
+  // clean miter rather than two overlapping strokes).
+  context.beginPath()
+  context.move(to: point(279, 758))
+  context.addLine(to: point(279, 280))
+  context.addLine(to: point(512, 640))
+  context.strokePath()
+
+  // Right leg, mirrored.
+  context.beginPath()
+  context.move(to: point(745, 758))
+  context.addLine(to: point(745, 280))
+  context.addLine(to: point(512, 640))
+  context.strokePath()
+
+  // Full-width bar across the base.
+  context.beginPath()
+  context.move(to: point(220, 699))
+  context.addLine(to: point(804, 699))
+  context.strokePath()
+
+  return context.makeImage()
+}
+
+func write(_ image: CGImage, to path: String) {
+  let rep = NSBitmapImageRep(cgImage: image)
+  guard let data = rep.representation(using: .png, properties: [:]) else { return }
+  try? data.write(to: URL(fileURLWithPath: path))
+  print("wrote \(path)")
+}
+
+let outputDir = CommandLine.arguments.count > 1 ? CommandLine.arguments[1] : "/tmp"
+try? FileManager.default.createDirectory(atPath: outputDir, withIntermediateDirectories: true)
+
+if let icon = drawIcon(size: 1024) {
+  write(icon, to: "\(outputDir)/AppIcon-1024.png")
+}
+// A light variant, handy for other surfaces (white background, black mark).
+if let light = drawIcon(size: 1024, inverted: true) {
+  write(light, to: "\(outputDir)/AppIcon-light-1024.png")
+}