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Simple SwiftUI In App Tour sketch
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| import SwiftUI | |
| struct ContentView: View { | |
| @State var infoIndex: Int = 0 | |
| typealias TourPOI = (point: UnitPoint, radii: (start: CGFloat, end: CGFloat)) | |
| var infos: [TourPOI] = [ | |
| // UnitPoint is a value between 0 and 1, | |
| // x represents the percentage of width, | |
| // y represents the percentage of height | |
| (point: .init(x: 0.75, y: 0.05), radii: (start: 0, end: 90)), | |
| (point: .init(x: 0.25, y: 0.25), radii: (start: 0, end: 90)), | |
| (point: .init(x: 0.5, y: 0.5), radii: (start: 100.0, end: 120.0)) | |
| ] | |
| var body: some View { | |
| let selectedInfo = infos[infoIndex] | |
| GeometryReader { proxy in | |
| ZStack { | |
| Rectangle() | |
| .fill(.blue) | |
| ForEach(Array(infos.enumerated()), id: \.0) { | |
| Text("Step \($0 + 1)") | |
| .position(x: $1.point.x * proxy.size.width, y: $1.point.y * proxy.size.height) | |
| } | |
| Rectangle() | |
| .fill(.black.opacity(0.5)) | |
| .mask(RadialGradient(colors: [.clear,.clear, .black], center: selectedInfo.point, startRadius: selectedInfo.radii.start, endRadius: selectedInfo.radii.end)) | |
| .onTapGesture { | |
| withAnimation { | |
| incrementInfo() | |
| } | |
| } | |
| } | |
| } | |
| } | |
| func incrementInfo() { | |
| guard infos.count != infoIndex + 1 else { | |
| infoIndex = 0 | |
| return | |
| } | |
| infoIndex += 1 | |
| } | |
| } | |
| struct ContentView_Previews: PreviewProvider { | |
| static var previews: some View { | |
| ContentView() | |
| } | |
| } |
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