images: add scan for qr code to image context menu

damus/Components/ImageCarousel.swift

@@ -190,7 +190,7 @@ struct ImageCarousel: View {
         }
         .tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
         .fullScreenCover(isPresented: $open_sheet) {
-            ImageView(video_controller: state.video, urls: urls, disable_animation: state.settings.disable_animation)
+            ImageView(video_controller: state.video, urls: urls, settings: state.settings)
         }
         .frame(height: height)
         .onChange(of: selectedIndex) { value in

damus/Views/Images/ImageContainerView.swift

@@ -12,12 +12,11 @@ import Kingfisher
 struct ImageContainerView: View {
     let video_controller: VideoController
     let url: MediaUrl
+    let settings: UserSettingsStore
 
     @State private var image: UIImage?
     @State private var showShareSheet = false
 
-    let disable_animation: Bool
-
     private struct ImageHandler: ImageModifier {
         @Binding var handler: UIImage?
 
@@ -29,13 +28,13 @@ struct ImageContainerView: View {
 
     func Img(url: URL) -> some View {
         KFAnimatedImage(url)
-            .imageContext(.note, disable_animation: disable_animation)
+            .imageContext(.note, disable_animation: settings.disable_animation)
             .configure { view in
                 view.framePreloadCount = 3
             }
             .imageModifier(ImageHandler(handler: $image))
             .clipped()
-            .modifier(ImageContextMenuModifier(url: url, image: image, showShareSheet: $showShareSheet))
+            .modifier(ImageContextMenuModifier(url: url, image: image, settings: settings, showShareSheet: $showShareSheet))
             .sheet(isPresented: $showShareSheet) {
                 ShareSheet(activityItems: [url])
             }
@@ -57,6 +56,6 @@ let test_image_url = URL(string: "https://jb55.com/red-me.jpg")!
 
 struct ImageContainerView_Previews: PreviewProvider {
     static var previews: some View {
-        ImageContainerView(video_controller: test_damus_state.video, url: .image(test_image_url), disable_animation: false)
+        ImageContainerView(video_controller: test_damus_state.video, url: .image(test_image_url), settings: test_damus_state.settings)
     }
 }

damus/Views/Images/ImageContextMenuModifier.swift

@@ -12,8 +12,16 @@ import UIKit
 struct ImageContextMenuModifier: ViewModifier {
     let url: URL?
     let image: UIImage?
+    let settings: UserSettingsStore
+
+    @State var qrCodeLink: String = ""
+    @State var open_link_confirm: Bool = false
+    @State var no_link_found: Bool = false
+
     @Binding var showShareSheet: Bool
 
+    @Environment(\.openURL) var openURL
+
     func body(content: Content) -> some View {
         return content.contextMenu {
             Button {
@@ -32,12 +40,52 @@ struct ImageContextMenuModifier: ViewModifier {
                 } label: {
                     Label(NSLocalizedString("Save Image", comment: "Context menu option to save an image."), image: "download")
                 }
+                Button {
+                    qrCodeLink = ""
+                    guard let detector:CIDetector = CIDetector(ofType: CIDetectorTypeQRCode, context: nil, options: [CIDetectorAccuracy:CIDetectorAccuracyHigh]) else {
+                        return
+                    }
+                    guard let ciImage = CIImage(image:someImage) else {
+                        return
+                    }
+                    let features = detector.features(in: ciImage)
+                    if let qrfeatures = features as? [CIQRCodeFeature] {
+                        for feature in qrfeatures {
+                            if let msgStr = feature.messageString {
+                                qrCodeLink += msgStr
+                            }
+                        }
+                    }
+
+                    if qrCodeLink == "" {
+                        no_link_found.toggle()
+                    } else {
+                        if qrCodeLink.contains("lnurl") {
+                            open_with_wallet(wallet: settings.default_wallet.model, invoice: qrCodeLink)
+                        } else if let _ = URL(string: qrCodeLink) {
+                            open_link_confirm.toggle()
+                        }
+                    }
+                } label: {
+                    Label(NSLocalizedString("Scan for QR Code", comment: "Context menu option to scan image for a QR Code."), image: "qr-code.fill")
+                }
             }
             Button {
                 showShareSheet = true
             } label: {
                 Label(NSLocalizedString("Share", comment: "Button to share an image."), image: "upload")
             }
         }
+        .alert(NSLocalizedString("Found \(qrCodeLink).\nOpen link?", comment: "Alert message asking if the user wants to open the link."), isPresented: $open_link_confirm) {
+            Button(NSLocalizedString("Open", comment: "Button to proceed with opening link."), role: .none) {
+                if let url = URL(string: qrCodeLink) {
+                    openURL(url)
+                }
+            }
+            Button(NSLocalizedString("Cancel", comment: "Button to cancel the upload."), role: .cancel) {}
+        }
+        .alert(NSLocalizedString("Unable to find a QR Code", comment: "Alert message letting user know a link was not found."), isPresented: $no_link_found) {
+            Button(NSLocalizedString("Dismiss", comment: "Button to dismiss alert"), role: .cancel) {}
+        }
     }
 }

damus/Views/Images/ImageView.swift

@@ -16,7 +16,7 @@ struct ImageView: View {
     @State private var selectedIndex = 0
     @State var showMenu = true
 
-    let disable_animation: Bool
+    let settings: UserSettingsStore
 
     var tabViewIndicator: some View {
         HStack(spacing: 10) {
@@ -42,7 +42,7 @@ struct ImageView: View {
             TabView(selection: $selectedIndex) {
                 ForEach(urls.indices, id: \.self) { index in
                     ZoomableScrollView {
-                        ImageContainerView(video_controller: video_controller, url: urls[index], disable_animation: disable_animation)
+                        ImageContainerView(video_controller: video_controller, url: urls[index], settings: settings)
                             .aspectRatio(contentMode: .fit)
                             .padding(.top, Theme.safeAreaInsets?.top)
                             .padding(.bottom, Theme.safeAreaInsets?.bottom)
@@ -85,6 +85,6 @@ struct ImageView: View {
 struct ImageView_Previews: PreviewProvider {
     static var previews: some View {
         let url: MediaUrl = .image(URL(string: "https://jb55.com/red-me.jpg")!)
-        ImageView(video_controller: test_damus_state.video, urls: [url], disable_animation: false)
+        ImageView(video_controller: test_damus_state.video, urls: [url], settings: test_damus_state.settings)
     }
 }

damus/Views/Images/ProfilePicImageView.swift

@@ -9,12 +9,11 @@ import Kingfisher
 
 struct ProfileImageContainerView: View {
     let url: URL?
+    let settings: UserSettingsStore
 
     @State private var image: UIImage?
     @State private var showShareSheet = false
 
-    let disable_animation: Bool
-
     private struct ImageHandler: ImageModifier {
         @Binding var handler: UIImage?
 
@@ -27,13 +26,13 @@ struct ProfileImageContainerView: View {
     var body: some View {
 
         KFAnimatedImage(url)
-            .imageContext(.pfp, disable_animation: disable_animation)
+            .imageContext(.pfp, disable_animation: settings.disable_animation)
             .configure { view in
                 view.framePreloadCount = 3
             }
             .imageModifier(ImageHandler(handler: $image))
             .clipShape(Circle())
-            .modifier(ImageContextMenuModifier(url: url, image: image, showShareSheet: $showShareSheet))
+            .modifier(ImageContextMenuModifier(url: url, image: image, settings: settings, showShareSheet: $showShareSheet))
             .sheet(isPresented: $showShareSheet) {
                 ShareSheet(activityItems: [url])
             }
@@ -64,7 +63,7 @@ struct NavDismissBarView: View {
 struct ProfilePicImageView: View {
     let pubkey: Pubkey
     let profiles: Profiles
-    let disable_animation: Bool
+    let settings: UserSettingsStore
 
     @Environment(\.presentationMode) var presentationMode
 
@@ -74,7 +73,7 @@ struct ProfilePicImageView: View {
                 .ignoresSafeArea()
 
             ZoomableScrollView {
-                ProfileImageContainerView(url: get_profile_url(picture: nil, pubkey: pubkey, profiles: profiles), disable_animation: disable_animation)
+                ProfileImageContainerView(url: get_profile_url(picture: nil, pubkey: pubkey, profiles: profiles), settings: settings)
                     .aspectRatio(contentMode: .fit)
                     .padding(.top, Theme.safeAreaInsets?.top)
                     .padding(.bottom, Theme.safeAreaInsets?.bottom)
@@ -94,7 +93,7 @@ struct ProfileZoomView_Previews: PreviewProvider {
         ProfilePicImageView(
             pubkey: test_pubkey,
             profiles: make_preview_profiles(test_pubkey),
-            disable_animation: false
+            settings: test_damus_state.settings
         )
     }
 }

damus/Views/Profile/ProfileView.swift

@@ -322,7 +322,7 @@ struct ProfileView: View {
                         is_zoomed.toggle()
                     }
                     .fullScreenCover(isPresented: $is_zoomed) {
-                        ProfilePicImageView(pubkey: profile.pubkey, profiles: damus_state.profiles, disable_animation: damus_state.settings.disable_animation)
+                        ProfilePicImageView(pubkey: profile.pubkey, profiles: damus_state.profiles, settings: damus_state.settings)
                     }
 
                 Spacer()