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https://github.com/kiwix/kiwix-apple.git
synced 2025-09-08 11:46:25 -04:00
41 lines
1.5 KiB
Swift
41 lines
1.5 KiB
Swift
// This file is part of Kiwix for iOS & macOS.
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//
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// Kiwix is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// any later version.
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//
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// Kiwix is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Kiwix; If not, see https://www.gnu.org/licenses/.
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import SwiftUI
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import CoreImage
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import os
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struct QRCode {
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static func image(from text: String) async -> Image? {
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let data = Data(text.utf8)
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guard let filter = CIFilter(name: "CIQRCodeGenerator") else {
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os_log("QRCode cannot create CIFilter", log: Log.LibraryService, type: .error)
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return nil
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}
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filter.setValue(data, forKey: "inputMessage")
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let context = CIContext()
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let transform = CGAffineTransform(scaleX: 20, y: 20)
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guard let outputImage = filter.outputImage?.transformed(by: transform),
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let image = context.createCGImage(outputImage, from: outputImage.extent) else {
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os_log("QRCode cannot create image", log: Log.LibraryService, type: .error)
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return nil
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}
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return Image(image, scale: 1, label: Text(text))
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}
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}
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