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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,160 @@ | ||
| // | ||
| // This source file is part of the StudyApplication based on the Stanford Spezi Template Application project | ||
| // | ||
| // SPDX-FileCopyrightText: 2023 Stanford University | ||
| // | ||
| // SPDX-License-Identifier: MIT | ||
| // | ||
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| import SwiftUI | ||
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| private struct GaugeRing: Shape { | ||
| private(set) var progress: CGFloat | ||
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| var animatableData: CGFloat { | ||
| get { | ||
| progress | ||
| } | ||
| set { | ||
| progress = newValue | ||
| } | ||
| } | ||
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| init(progress: CGFloat) { | ||
| self.progress = progress | ||
| } | ||
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| func path(in rect: CGRect) -> Path { | ||
| Path { path in | ||
| path.addArc( | ||
| center: CGPoint(x: rect.width / 2, y: rect.height / 2), | ||
| radius: min(rect.width, rect.height) / 2, | ||
| startAngle: Angle(degrees: 0), | ||
| endAngle: Angle(degrees: progress * 360.0), | ||
| clockwise: false | ||
| ) | ||
| } | ||
| } | ||
| } | ||
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| struct Gauge: View { | ||
| let lineWidth: Double | ||
| let shaddowRadius: Double | ||
| let gradient: Gradient | ||
| let backgroundColor: Color | ||
| let progress: Double | ||
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| @State private var size: CGSize = .zero | ||
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| private var shaddowOffset: CGPoint { | ||
| let angle = Angle(degrees: progress * 360.0).radians | ||
| return CGPoint(x: cos(angle) * shaddowRadius * 2.0, y: sin(angle) * shaddowRadius * 2.0) | ||
| } | ||
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| private var radius: Double { | ||
| (size.height / 2) - (lineWidth / 2) | ||
| } | ||
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| var body: some View { | ||
| ZStack { // swiftlint:disable:this closure_body_length | ||
| GeometryReader { proxy in | ||
| Circle() | ||
| .stroke(backgroundColor, lineWidth: lineWidth) | ||
| .padding(lineWidth / 2) | ||
| .onAppear { | ||
| self.size = proxy.size | ||
| } | ||
| } | ||
| GaugeRing(progress: progress) | ||
| .stroke( | ||
| AngularGradient( | ||
| gradient: gradient, | ||
| center: .center, | ||
| startAngle: .degrees(0), | ||
| endAngle: .degrees(progress * 360.0) | ||
| ), | ||
| style: StrokeStyle(lineWidth: 20, lineCap: .round) | ||
| ) | ||
| .rotationEffect(.degrees(-90)) | ||
| .frame(width: size.width, height: size.height) | ||
| .padding(lineWidth / 2) | ||
| if progress < 1.0 - (lineWidth / (2 * radius * .pi)) { | ||
| Circle() | ||
| .frame(width: lineWidth) | ||
| .foregroundColor(gradient.stops.first?.color) | ||
| .offset(y: -(size.height / 2)) | ||
| } else { | ||
| let shaddowOffset = shaddowOffset | ||
| Circle() | ||
| .frame(width: lineWidth) | ||
| .foregroundColor(gradient.stops.last?.color) | ||
| .offset(y: -(size.height / 2)) | ||
| .rotationEffect(Angle.degrees(360 * Double(progress))) | ||
| .shadow( | ||
| color: .black.opacity(0.2), | ||
| radius: shaddowRadius, | ||
| x: shaddowOffset.x, | ||
| y: shaddowOffset.y | ||
| ) | ||
| } | ||
| } | ||
| .aspectRatio(1.0, contentMode: .fit) | ||
| .animation(.easeOut, value: progress) | ||
| } | ||
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| init( | ||
| progress: Double, | ||
| gradient: Gradient, | ||
| backgroundColor: Color, | ||
| lineWidth: Double = 20, | ||
| shaddowRadius: Double = 4 | ||
| ) { | ||
| self.progress = progress | ||
| self.lineWidth = lineWidth | ||
| self.shaddowRadius = shaddowRadius | ||
| self.gradient = gradient | ||
| self.backgroundColor = backgroundColor | ||
| } | ||
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| init( | ||
| progress: Double, | ||
| color: Color = .accentColor, | ||
| lineWidth: Double = 20 | ||
| ) { | ||
| self.progress = progress | ||
| self.lineWidth = lineWidth | ||
| self.shaddowRadius = lineWidth / 5 | ||
| self.gradient = Gradient(colors: [color, color]) | ||
| self.backgroundColor = color.opacity(0.2) | ||
| } | ||
| } | ||
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| #Preview { | ||
| Gauge(progress: 0.981, color: .red) | ||
| .padding() | ||
| } | ||
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| #Preview("Animation") { | ||
| struct PreviewWrapper: View { | ||
| @State var progress = 0.0 | ||
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| var body: some View { | ||
| Gauge(progress: progress) | ||
| .task { | ||
| Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { _ in | ||
| progress += Double.random(in: 0.0...0.05) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return PreviewWrapper() | ||
| .padding() | ||
| } | ||
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