damus

nostr ios client
git clone git://jb55.com/damus
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ImageContextMenuModifier.swift (4805B)

      1 //
      2 //  ImageContextMenuModifier.swift
      3 //  damus
      4 //
      5 //  Created by William Casarin on 2023-03-23.
      6 //
      7 
      8 import Foundation
      9 import SwiftUI
     10 import UIKit
     11 
     12 struct ImageContextMenuModifier: ViewModifier {
     13     let url: URL?
     14     let image: UIImage?
     15     let settings: UserSettingsStore
     16     
     17     @State var qrCodeValue: String = ""
     18     @State var open_link_confirm: Bool = false
     19     @State var open_wallet_confirm: Bool = false
     20     @State var not_found: Bool = false
     21     
     22     @Binding var showShareSheet: Bool
     23     
     24     @Environment(\.openURL) var openURL
     25     
     26     func body(content: Content) -> some View {
     27         return content.contextMenu {
     28             Button {
     29                 UIPasteboard.general.url = url
     30             } label: {
     31                 Label(NSLocalizedString("Copy Image URL", comment: "Context menu option to copy the URL of an image into clipboard."), image: "copy2")
     32             }
     33             if let someImage = image {
     34                 Button {
     35                     UIPasteboard.general.image = someImage
     36                 } label: {
     37                     Label(NSLocalizedString("Copy Image", comment: "Context menu option to copy an image into clipboard."), image: "copy2.fill")
     38                 }
     39                 Button {
     40                     UIImageWriteToSavedPhotosAlbum(someImage, nil, nil, nil)
     41                 } label: {
     42                     Label(NSLocalizedString("Save Image", comment: "Context menu option to save an image."), image: "download")
     43                 }
     44                 Button {
     45                     qrCodeValue = ""
     46                     guard let detector:CIDetector = CIDetector(ofType: CIDetectorTypeQRCode, context: nil, options: [CIDetectorAccuracy:CIDetectorAccuracyHigh]) else {
     47                         return
     48                     }
     49                     guard let ciImage = CIImage(image:someImage) else {
     50                         return
     51                     }
     52                     let features = detector.features(in: ciImage)
     53                     if let qrfeatures = features as? [CIQRCodeFeature] {
     54                         for feature in qrfeatures {
     55                             if let msgStr = feature.messageString {
     56                                 qrCodeValue = msgStr
     57                             }
     58                         }
     59                     }
     60                     
     61                     if qrCodeValue == "" {
     62                         not_found.toggle()
     63                     } else {
     64                         if qrCodeValue.localizedCaseInsensitiveContains("lnurl") || qrCodeValue.localizedCaseInsensitiveContains("lnbc") {
     65                             open_wallet_confirm.toggle()
     66                             open_link_confirm.toggle()
     67                         } else if let _ = URL(string: qrCodeValue) {
     68                             open_link_confirm.toggle()
     69                         }
     70                     }
     71                 } label: {
     72                     Label(NSLocalizedString("Scan for QR Code", comment: "Context menu option to scan image for a QR Code."), image: "qr-code.fill")
     73                 }
     74             }
     75             Button {
     76                 showShareSheet = true
     77             } label: {
     78                 Label(NSLocalizedString("Share", comment: "Button to share an image."), image: "upload")
     79             }
     80         }
     81         .alert(NSLocalizedString("Found\n \(qrCodeValue)", comment: "Alert message asking if the user wants to open the link.").truncate(maxLength: 50), isPresented: $open_link_confirm) {
     82             if open_wallet_confirm {
     83                 Button(NSLocalizedString("Open in wallet", comment: "Button to open the value found in browser."), role: .none) {
     84                     do {
     85                         try open_with_wallet(wallet: settings.default_wallet.model, invoice: qrCodeValue)
     86                     }
     87                     catch {
     88                         present_sheet(.select_wallet(invoice: qrCodeValue))
     89                     }
     90                 }
     91             } else {
     92                 Button(NSLocalizedString("Open in browser", comment: "Button to open the value found in browser."), role: .none) {
     93                     if let url = URL(string: qrCodeValue) {
     94                         openURL(url)
     95                     }
     96                 }
     97             }
     98             Button(NSLocalizedString("Copy", comment: "Button to copy the value found."), role: .none) {
     99                 UIPasteboard.general.string = qrCodeValue
    100             }
    101             Button(NSLocalizedString("Cancel", comment: "Button to cancel any interaction with the QRCode link."), role: .cancel) {}
    102         }
    103         .alert(NSLocalizedString("Unable to find a QR Code", comment: "Alert message letting user know a QR Code was not found."), isPresented: $not_found) {
    104             Button(NSLocalizedString("Dismiss", comment: "Button to dismiss alert"), role: .cancel) {}
    105         }
    106     }
    107 }