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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,182 @@ | ||
| // | ||
| // QRCodePixelShapeBlob.swift | ||
| // | ||
| // Copyright © 2024 Darren Ford. All rights reserved. | ||
| // | ||
| // MIT license | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated | ||
| // documentation files (the "Software"), to deal in the Software without restriction, including without limitation the | ||
| // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to | ||
| // permit persons to whom the Software is furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all copies or substantial | ||
| // portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE | ||
| // WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS | ||
| // OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| // | ||
|
|
||
| import Foundation | ||
| import CoreGraphics | ||
|
|
||
| public extension QRCode.PixelShape { | ||
| /// A generator for a rounded path that links diagonal pixels with a 'sticky' region | ||
| @objc(QRCodePixelShapeBlob) class Blob: NSObject, QRCodePixelShapeGenerator { | ||
| /// The generator name | ||
| @objc public static let Name: String = "blob" | ||
| /// The generator title | ||
| @objc public static var Title: String { "Blob" } | ||
| /// Create an instance of this path generator with the specified settings | ||
| @objc public static func Create(_ settings: [String: Any]?) -> any QRCodePixelShapeGenerator { Blob() } | ||
|
|
||
| /// Make a copy of the object | ||
| @objc public func copyShape() -> any QRCodePixelShapeGenerator { Blob() } | ||
| } | ||
| } | ||
|
|
||
| public extension QRCode.PixelShape.Blob { | ||
| /// Generate a CGPath from the matrix contents | ||
| /// - Parameters: | ||
| /// - matrix: The matrix to generate | ||
| /// - size: The size of the resulting CGPath | ||
| /// - Returns: A path | ||
| @objc func generatePath(from matrix: BoolMatrix, size: CGSize) -> CGPath { | ||
| let dx = size.width / CGFloat(matrix.dimension) | ||
| let dy = size.height / CGFloat(matrix.dimension) | ||
| let dm = min(dx, dy) | ||
|
|
||
| let xoff = (size.width - (CGFloat(matrix.dimension) * dm)) / 2.0 | ||
| let yoff = (size.height - (CGFloat(matrix.dimension) * dm)) / 2.0 | ||
|
|
||
| // The scale required to convert our template paths to output path size | ||
| let w = QRCode.PixelShape.RoundedPath.DefaultSize.width | ||
| let scaleTransform = CGAffineTransform(scaleX: dm / w, y: dm / w) | ||
|
|
||
| let path = CGMutablePath() | ||
|
|
||
| let blobbyness = CGSize(dimension: 3) | ||
|
|
||
| for row in 0 ..< matrix.dimension { | ||
| for col in 0 ..< matrix.dimension { | ||
| let translate = CGAffineTransform(translationX: CGFloat(col) * dm + xoff, y: CGFloat(row) * dm + yoff) | ||
| let ne = Neighbours(matrix: matrix, row: row, col: col) | ||
| if matrix[row, col] == false { | ||
| // Attach inner corners if needed | ||
| if ne.leading, ne.top { | ||
| path.addPath( | ||
| Self.templateRoundBottomLeft, | ||
| transform: scaleTransform.concatenating(translate) | ||
| ) | ||
| } | ||
| if ne.trailing, ne.top { | ||
| path.addPath( | ||
| Self.templateRoundBottomRight, | ||
| transform: scaleTransform.concatenating(translate) | ||
| ) | ||
| } | ||
| if ne.leading, ne.bottom { | ||
| path.addPath( | ||
| Self.templateRoundTopLeft, | ||
| transform: scaleTransform.concatenating(translate) | ||
| ) | ||
| } | ||
| if ne.trailing, ne.bottom { | ||
| path.addPath( | ||
| Self.templateRoundTopRight, | ||
| transform: scaleTransform.concatenating(translate) | ||
| ) | ||
| } | ||
| } | ||
| else { | ||
| var tl = CGSize(width: 0, height: 0) | ||
| var tr = CGSize(width: 0, height: 0) | ||
| var bl = CGSize(width: 0, height: 0) | ||
| var br = CGSize(width: 0, height: 0) | ||
|
|
||
| if !ne.leading, !ne.top, !ne.topLeading { | ||
| tl = blobbyness | ||
| } | ||
| if !ne.leading, !ne.bottom, !ne.bottomLeading { | ||
| bl = blobbyness | ||
| } | ||
| if !ne.trailing, !ne.top, !ne.topTrailing { | ||
| tr = blobbyness | ||
| } | ||
| if !ne.trailing, !ne.bottom, !ne.bottomTrailing { | ||
| br = blobbyness | ||
| } | ||
|
|
||
| let pth = CGPath.RoundedRect( | ||
| rect: CGRect(x: 0, y: 0, width: 10, height: 10), | ||
| topLeftRadius: tl, | ||
| topRightRadius: tr, | ||
| bottomLeftRadius: bl, | ||
| bottomRightRadius: br | ||
| ) | ||
| path.addPath(pth, transform: scaleTransform.concatenating(translate)) | ||
| } | ||
| } | ||
| } | ||
| return path | ||
| } | ||
| } | ||
|
|
||
| // MARK: - Settings | ||
|
|
||
| public extension QRCode.PixelShape.Blob { | ||
| /// Does the shape generator support setting values for a particular key? | ||
| @objc func supportsSettingValue(forKey key: String) -> Bool { false } | ||
| /// Returns a storable representation of the shape handler | ||
| @objc func settings() -> [String: Any] { return [:] } | ||
| /// Set a configuration value for a particular setting string | ||
| @objc func setSettingValue(_ value: Any?, forKey key: String) -> Bool { false } | ||
| } | ||
|
|
||
| // MARK: - Shapes | ||
|
|
||
| // Inner corner templates | ||
|
|
||
| private extension QRCode.PixelShape.Blob { | ||
| static let templateRoundTopLeft = | ||
| CGPath.make { | ||
| $0.move(to: CGPoint(x: 0, y: 5)) | ||
| $0.curve(to: CGPoint(x: 1.1, y: 8.8), controlPoint1: CGPoint(x: 0, y: 5), controlPoint2: CGPoint(x: 0, y: 7.6)) | ||
| $0.curve(to: CGPoint(x: 5, y: 10), controlPoint1: CGPoint(x: 2.2, y: 10), controlPoint2: CGPoint(x: 5, y: 10)) | ||
| $0.line(to: CGPoint(x: 0, y: 10)) | ||
| $0.line(to: CGPoint(x: 0, y: 5)) | ||
| $0.closeSubpath() | ||
| } | ||
|
|
||
| static let templateRoundTopRight = | ||
| CGPath.make { | ||
| $0.move(to: CGPoint(x: 10, y: 5)) | ||
| $0.curve(to: CGPoint(x: 8.9, y: 8.8), controlPoint1: CGPoint(x: 10, y: 5), controlPoint2: CGPoint(x: 10, y: 7.6)) | ||
| $0.curve(to: CGPoint(x: 5, y: 10), controlPoint1: CGPoint(x: 7.8, y: 10), controlPoint2: CGPoint(x: 5, y: 10)) | ||
| $0.line(to: CGPoint(x: 10, y: 10)) | ||
| $0.line(to: CGPoint(x: 10, y: 5)) | ||
| $0.closeSubpath() | ||
| } | ||
|
|
||
| static let templateRoundBottomLeft = | ||
| CGPath.make { | ||
| $0.move(to: CGPoint(x: 0, y: 5)) | ||
| $0.curve(to: CGPoint(x: 1.1, y: 1.2), controlPoint1: CGPoint(x: 0, y: 5), controlPoint2: CGPoint(x: 0, y: 2.4)) | ||
| $0.curve(to: CGPoint(x: 5, y: 0), controlPoint1: CGPoint(x: 2.2, y: 0), controlPoint2: CGPoint(x: 5, y: 0)) | ||
| $0.line(to: CGPoint(x: 0, y: 0)) | ||
| $0.line(to: CGPoint(x: 0, y: 5)) | ||
| $0.closeSubpath() | ||
| } | ||
|
|
||
| static let templateRoundBottomRight = | ||
| CGPath.make { | ||
| $0.move(to: CGPoint(x: 10, y: 5)) | ||
| $0.curve(to: CGPoint(x: 8.9, y: 1.2), controlPoint1: CGPoint(x: 10, y: 5), controlPoint2: CGPoint(x: 10, y: 2.4)) | ||
| $0.curve(to: CGPoint(x: 5, y: 0), controlPoint1: CGPoint(x: 7.8, y: 0), controlPoint2: CGPoint(x: 5, y: 0)) | ||
| $0.line(to: CGPoint(x: 10, y: 0)) | ||
| $0.line(to: CGPoint(x: 10, y: 5)) | ||
| $0.closeSubpath() | ||
| } | ||
| } |
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