Profile Banner Images

Changelog-Added: Profile banner images Closes: #302
2023-01-10 15:12:34 -08:00
parent 33383265c8
commit 9d44ed0bfe
8 changed files with 151 additions and 15 deletions
--- a/damus/Views/BannerImageView.swift
+++ b/damus/Views/BannerImageView.swift
@@ -0,0 +1,85 @@
+//
+//  BannerImageView.swift
+//  damus
+//
+//  Created by Jason Jōb on 2023-01-10.
+//
+
+import SwiftUI
+import Kingfisher
+
+struct InnerBannerImageView: View {
+    let url: URL?
+    let pubkey: String
+
+    var body: some View {
+        ZStack {
+            Color(uiColor: .systemBackground)
+            
+            if (url != nil) {
+                KFAnimatedImage(url)
+                    .callbackQueue(.dispatch(.global(qos: .background)))
+                    .processingQueue(.dispatch(.global(qos: .background)))
+                    .appendProcessor(LargeImageProcessor.shared)
+                    .configure { view in
+                        view.framePreloadCount = 1
+                    }
+                    .placeholder { _ in
+                        Image("profile-banner").resizable()
+                    }
+                    .scaleFactor(UIScreen.main.scale)
+                    .loadDiskFileSynchronously()
+                    .fade(duration: 0.1)
+            } else {
+                Image("profile-banner").resizable()
+            }
+        }
+    }
+}
+
+struct BannerImageView: View {
+    let pubkey: String
+    let profiles: Profiles
+    
+    @State var banner: String?
+    
+    init (pubkey: String, profiles: Profiles, banner: String? = nil) {
+        self.pubkey = pubkey
+        self.profiles = profiles
+        self._banner = State(initialValue: banner)
+    }
+    
+    var body: some View {
+        InnerBannerImageView(url: get_banner_url(banner: banner, pubkey: pubkey, profiles: profiles), pubkey: pubkey)
+            .onReceive(handle_notify(.profile_updated)) { notif in
+                let updated = notif.object as! ProfileUpdate
+
+                guard updated.pubkey == self.pubkey else {
+                    return
+                }
+                
+                if let bannerImage = updated.profile.banner {
+                    self.banner = bannerImage
+                }
+            }
+    }
+}
+
+func get_banner_url(banner: String?, pubkey: String, profiles: Profiles) -> URL? {
+    let bannerUrlString = banner ?? profiles.lookup(id: pubkey)?.banner ?? ""
+    if let url = URL(string: bannerUrlString) {
+        return url
+    }
+    return nil
+}
+
+struct BannerImageView_Previews: PreviewProvider {
+    static let pubkey = "ca48854ac6555fed8e439ebb4fa2d928410e0eef13fa41164ec45aaaa132d846"
+    
+    static var previews: some View {
+        BannerImageView(
+            pubkey: pubkey,
+            profiles: make_preview_profiles(pubkey))
+    }
+}
+