|
|
@@ -0,0 +1,55 @@
|
|
|
+import AppKit
|
|
|
+
|
|
|
+// Keep the shared brand artwork intact; the white tile belongs to the macOS app icon.
|
|
|
+let arguments = CommandLine.arguments
|
|
|
+guard arguments.count == 3,
|
|
|
+ let logo = NSImage(contentsOfFile: arguments[1]) else {
|
|
|
+ fatalError("Usage: swift build-desktop-icon.swift <brand.png> <output-directory>")
|
|
|
+}
|
|
|
+let output = URL(fileURLWithPath: arguments[2], isDirectory: true)
|
|
|
+let iconset = output.appendingPathComponent("icon.iconset", isDirectory: true)
|
|
|
+try FileManager.default.createDirectory(at: iconset, withIntermediateDirectories: true)
|
|
|
+
|
|
|
+func render(size: Int) throws -> Data {
|
|
|
+ let bitmap = NSBitmapImageRep(bitmapDataPlanes: nil, pixelsWide: size, pixelsHigh: size,
|
|
|
+ bitsPerSample: 8, samplesPerPixel: 4, hasAlpha: true, isPlanar: false,
|
|
|
+ colorSpaceName: .deviceRGB, bytesPerRow: 0, bitsPerPixel: 0)!
|
|
|
+ let context = NSGraphicsContext(bitmapImageRep: bitmap)!
|
|
|
+ NSGraphicsContext.saveGraphicsState()
|
|
|
+ NSGraphicsContext.current = context
|
|
|
+ context.imageInterpolation = .high
|
|
|
+ context.shouldAntialias = true
|
|
|
+ let scale = CGFloat(size) / 1024
|
|
|
+ context.cgContext.clear(CGRect(x: 0, y: 0, width: size, height: size))
|
|
|
+ context.cgContext.scaleBy(x: scale, y: scale)
|
|
|
+ NSColor.white.setFill()
|
|
|
+ NSBezierPath(roundedRect: NSRect(x: 100, y: 100, width: 824, height: 824),
|
|
|
+ xRadius: 184, yRadius: 184).fill()
|
|
|
+ logo.draw(in: NSRect(x: 140, y: 140, width: 744, height: 744),
|
|
|
+ from: .zero, operation: .sourceOver, fraction: 1)
|
|
|
+ context.flushGraphics()
|
|
|
+ NSGraphicsContext.restoreGraphicsState()
|
|
|
+
|
|
|
+ // These points catch an absent tile or an accidentally flattened outer canvas.
|
|
|
+ for (x, y) in [(0, 0), (size - 1, 0), (0, size - 1), (size - 1, size - 1)] {
|
|
|
+ precondition(bitmap.colorAt(x: x, y: y)!.alphaComponent == 0,
|
|
|
+ "The icon's outer corners must be transparent")
|
|
|
+ }
|
|
|
+ let center = bitmap.colorAt(x: size / 2, y: size / 2)!.usingColorSpace(.deviceRGB)!
|
|
|
+ precondition(center.alphaComponent == 1 && center.redComponent == 1 &&
|
|
|
+ center.greenComponent == 1 && center.blueComponent == 1,
|
|
|
+ "The icon's interior must have an opaque, pure-white background")
|
|
|
+ return bitmap.representation(using: .png, properties: [:])!
|
|
|
+}
|
|
|
+
|
|
|
+for points in [16, 32, 128, 256, 512] {
|
|
|
+ for scale in [1, 2] {
|
|
|
+ let suffix = scale == 2 ? "@2x" : ""
|
|
|
+ let data = try render(size: points * scale)
|
|
|
+ try data.write(to: iconset.appendingPathComponent("icon_\(points)x\(points)\(suffix).png"))
|
|
|
+ if points == 512 && scale == 2 {
|
|
|
+ try data.write(to: output.appendingPathComponent("icon.png"))
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+print("桌面图标已生成：纯白底板，10 个尺寸，透明度校验通过")
|
