taler-ios

iOS apps for GNU Taler (wallet)
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LaunchAnimationView.swift (2566B)

      1 /*
      2  * This file is part of GNU Taler, ©2022-26 Taler Systems S.A.
      3  * See LICENSE.md
      4  */
      5 /**
      6  * @author Marc Stibane
      7  */
      8 import SwiftUI
      9 
     10 struct LaunchAnimationView: View {
     11     @State private var rotationEnabled = true
     12     var body: some View {
     13         ZStack {
     14             Color(.systemGray3).ignoresSafeArea()
     15             RotatingTaler(size: (350 < UIScreen.screenWidth) ? 200 : 250,
     16                       progress: true,
     17                           once: true,
     18                     background: nil,
     19                rotationEnabled: $rotationEnabled)
     20                 .accessibilityLabel(Text("Progress indicator", comment: "a11y"))
     21         }
     22     }
     23 }
     24 // MARK: -
     25 struct RotatingTaler: View {
     26     let size: CGFloat
     27     let progress: Bool
     28     let once: Bool
     29     let background: Color?
     30 
     31     @Binding var rotationEnabled: Bool
     32     @State private var rotationDirection = false
     33 
     34     private let animationTimer = Timer
     35         .publish(every: 1.5, on: .current, in: .common)
     36         .autoconnect()
     37 
     38     var body: some View {
     39         let image = Image(TALER_LOGO)
     40             .resizable()
     41             .scaledToFit()
     42             .frame(width: size, height: size)
     43             .padding(10)
     44             .accessibilityLabel(progress ? Text("In progress", comment: "a11y")
     45                                          : Text("Taler Logo", comment: "a11y"))       // decorative logo - with button function
     46             .rotationEffect(rotationDirection ? Angle(degrees: 0) : Angle(degrees: once ? 900 : 720))
     47             .onReceive(animationTimer) { timerValue in
     48 //                print("Timer: \(timerValue), rotationDirection: \(rotationDirection)")
     49                 if rotationEnabled {
     50                     if !once {
     51                         withAnimation(.easeInOut(duration: 1.5)) {
     52                             rotationDirection.toggle()
     53                         }
     54                     }
     55                 }
     56             }
     57             .task {
     58                 if once {
     59                     withAnimation(.easeInOut(duration: 2.0)) {
     60                         rotationDirection.toggle()
     61                     }
     62                 }
     63             }
     64 //        if #available(iOS 26.0, *) {
     65 //            image
     66 //                .glassEffect(.clear)
     67 //        } else {
     68             image
     69                 .background {
     70                     Capsule()
     71                         .fill((background ?? Color(.systemGray6)).opacity(0.3))
     72                 }
     73 //        }
     74     }
     75 }
     76 // MARK: -
     77 struct LaunchAnimationView_Previews: PreviewProvider {
     78     static var previews: some View {
     79         LaunchAnimationView()
     80     }
     81 }