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QRCodeRenderer
struct QRCodeRendererRenders a QR code as a PNG, optionally in Twitarr style: outer corners of each connected shape rounded, and an “ARR” icon in the center built out of half-size blocks.
This rasterizes the image itself (via SwiftarrImage for PNG encoding) rather than using Core Graphics, because
Linux has no access to it.
Yes this was some vibe-coded nonsense. What gave it away?
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Round the outer corners of each connected shape of blocks.
Declaration
Swift
var rounded: Bool -
Put the “ARR” icon in the middle of the code.
Declaration
Swift
var icon: Bool -
Pixels per QR module. Must be even, as the icon is built from half-size blocks.
Declaration
Swift
var moduleSize: Int -
Width of the blank border, in modules. The QR spec calls for 4.
Declaration
Swift
var quietZone: Int -
Declaration
Swift
struct Output -
Codes smaller than this don’t have enough redundancy to give up the center, and codes at or above
maxIconModuleshave alignment patterns near the center that must not be erased. 29 is a version 3 code; 45 is version 7.Declaration
Swift
static let minIconModules: Int -
Declaration
Swift
static let maxIconModules: Int -
Declaration
Swift
private static let glyphA: [String] -
Declaration
Swift
private static let glyphR: [String] -
Declaration
Swift
private static let iconGlyphs: [[String]] -
Declaration
Swift
private static let iconWidth: Int -
Declaration
Swift
private static let iconHeight: Int -
A grid of square blocks, rasterized with the outer corners of connected shapes optionally rounded.
See moreDeclaration
Swift
private struct BlockLayer -
Clears the center of the module grid and returns the icon as a grid of half-size blocks (2n x 2n), centered on the code.
Declaration
Swift
private static func placeIcon(in modules: inout [[Bool]]) -> [[Bool]]