Native AppleTvRemote source code for episode on multiple cursors in Xcode

AppleTVRemoteNative.swift

//
//  AppleTVRemoteNative.swift
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
//  of the Software, and to permit persons to whom the Software is furnished to do so,
//  subject to the following conditions:
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
//  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
//  PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
//  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
//  AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
//  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//  Created by Adam Fordyce on 30/07/2021.
//  Copyright © 2020 Adam Fordyce. All rights reserved.
//

import SwiftUI

private let silverGradient = LinearGradient(gradient: Gradient(colors: [Color(white: 0.85), Color(white: 0.65)]), startPoint: .topLeading, endPoint: .bottomTrailing)
private let outerDialGradient = LinearGradient(gradient: Gradient(colors: [Color(white: 0.18), Color(white: 0.02)]), startPoint: .topLeading, endPoint: .bottomTrailing)

private let buttonBackgroundColor = Color(white: 0.05)
private let buttonForegroundColor = Color(white: 0.65)

struct AppleTVRemoteNative: View {
    
    var body: some View {
        let siriButtonGradient = LinearGradient(gradient:
                Gradient(stops: [
                    Gradient.Stop(color: Color(white: 0.9), location: 0),
                    Gradient.Stop(color: Color(white: 0.65), location: 0.15),
                    Gradient.Stop(color: Color(white: 0.65), location: 0.85),
                    Gradient.Stop(color: Color(white: 0.4), location: 1),
                ]), startPoint: .top, endPoint: .bottom)
        GeometryReader { (geo: GeometryProxy) in
            let controlSize = getControlSize(from: geo)
            ZStack {
                let shadowOffset = controlSize.width * 0.03
                Color.black.mask(ControlBackground(controlSize: controlSize))
                    .offset(x: shadowOffset, y: shadowOffset)
                    .blur(radius: shadowOffset)
                Rectangle()
                    .fill(siriButtonGradient)
                    .frame(width: controlSize.width * 0.03, height: controlSize.height * 0.1)
                    .offset(x: controlSize.width * 0.5, y: controlSize.height * -0.296)
                ControlBackground(controlSize: controlSize)
                VStack(spacing: 0) {
                    MicrophoneAndPowerButton(controlSize: controlSize)
                    Group {
                        let mainDialShadowOffset = controlSize.width * 0.005
                        MainDial(controlSize: controlSize)
                            .padding(.bottom, controlSize.height * 0.01)
                            .shadow(radius: controlSize.width * 0.01, x: mainDialShadowOffset, y: mainDialShadowOffset)
                        let clusterShadowOffset = controlSize.width * 0.007
                        ButtonCluster(controlSize: controlSize)
                            .shadow(radius: controlSize.width * 0.015, x: clusterShadowOffset, y: clusterShadowOffset)
                        Spacer()
                    }
                    .foregroundColor(buttonForegroundColor)
                    .font(.system(size: controlSize.width * 0.1))
                }
            }
            .frame(width: controlSize.width, height: controlSize.height)
            .frame(maxWidth: .infinity, maxHeight: .infinity)
        }
    }
    
    private func getControlSize(from geo: GeometryProxy) -> CGSize {
        let widthAsFractionOfHeight: CGFloat = 0.25
        if geo.size.width > geo.size.height * widthAsFractionOfHeight {
            return CGSize(width: geo.size.height * widthAsFractionOfHeight, height: geo.size.height)
        } else {
            return CGSize(width: geo.size.width, height: geo.size.width * (1 / widthAsFractionOfHeight))
        }
    }
}

private struct ControlBackground: View {
    
    let controlSize: CGSize
    
    var body: some View {
        RoundedRectangle(cornerRadius: controlSize.width * 0.18)
            .fill(silverGradient)
    }
}

private struct MicrophoneAndPowerButton: View {
    
    let controlSize: CGSize
    
    var body: some View {
        let silverGradient = LinearGradient(gradient: Gradient(colors: [Color(white: 0.85), Color(white: 0.55)]), startPoint: .topLeading, endPoint: .bottomTrailing)
        let microphoneButtonSize = controlSize.width * 0.19
        ZStack {
            Capsule()
                .frame(width: controlSize.width * 0.065, height: controlSize.height * 0.005)
            HStack {
                Spacer()
                Circle()
                    .stroke(silverGradient, lineWidth: controlSize.width * 0.004)
                    .overlay(Image(systemName: "power").resizable()
                                .aspectRatio(contentMode: .fit)
                                .frame(width: controlSize.width * 0.085, height: controlSize.width * 0.085))
                    .frame(width: microphoneButtonSize, height: microphoneButtonSize)
            }
        }
        .padding([.top, .horizontal], controlSize.width * 0.1)
        .padding(.bottom, controlSize.width * 0.07)
    }
}

private struct MainDial: View {
    
    let controlSize: CGSize
    
    var body: some View {
        let innerDialGradient = RadialGradient(gradient: Gradient(colors: [Color(white: 0.14), Color(white: 0.03)]), center: UnitPoint(x: 0.8, y: 0.8), startRadius: controlSize.width * 0.1, endRadius: controlSize.width * 0.6)
        let ringBlurRadius = max(controlSize.width * 0.004, 0.6)
        let ringShadowOffset = max(controlSize.width * 0.004, 1)
        let mainDialSize = controlSize.width * 0.9
        let outerDialSize = controlSize.width * 0.73
        let innerDialSize = controlSize.width * 0.53
        let dotSize = controlSize.width * 0.018
        ZStack {
            Color.black
            Group {
                Circle()
                    .fill(outerDialGradient)
                Circle()
                    .fill(outerDialGradient)
                    .rotationEffect(.degrees(180))
                    .frame(width: outerDialSize, height: outerDialSize)
            }
            .blur(radius: controlSize.width * 0.04)
            Group {
                innerDialGradient
                    .clipShape(Circle())
                Circle()
                    .stroke(LinearGradient(gradient: Gradient(colors: [Color(white: 0.3), Color(white: 0.5)]), startPoint: .topLeading, endPoint: .bottomTrailing), lineWidth: controlSize.width * 0.005)
                    .offset(x: ringShadowOffset, y: ringShadowOffset)
                    .blur(radius: ringBlurRadius)
                    .blendMode(.screen)
                Circle()
                    .stroke(Color(white: 0.03), lineWidth: controlSize.width * 0.01)
            }
            .frame(width: innerDialSize, height: innerDialSize)
            ForEach(0..<4) { index in
                Circle()
                    .fill(buttonForegroundColor)
                    .frame(width: dotSize, height: dotSize)
                    .offset(x: controlSize.width * 0.4)
                    .rotationEffect(.degrees(90 * Double(index)))
            }
        }
        .clipShape(Circle())
        .frame(width: mainDialSize, height: mainDialSize)
    }
}

private struct ButtonCluster: View {
    
    let controlSize: CGSize
    
    var body: some View {
        let buttonDiameter = controlSize.width * 0.35
        let concaveButtonGradient = RadialGradient(gradient: Gradient(colors: [Color(white: 0.14), Color(white: 0.03)]), center: UnitPoint(x: 0.8, y: 0.8), startRadius: controlSize.width * 0.05, endRadius: controlSize.width * 0.28)
        VStack(spacing: controlSize.height * 0.02) {
            HStack(spacing: controlSize.width * 0.08) {
                ZStack {
                    concaveButtonGradient
                        .frame(width: buttonDiameter, height: buttonDiameter)
                        .clipShape(Circle())
                    Image(systemName: "chevron.left")
                }
                SingleButton(diameter: buttonDiameter, sfSymbol: "tv")
            }
            HStack(spacing: controlSize.width * 0.08) {
                VStack(spacing: controlSize.height * 0.02) {
                    SingleButton(diameter: buttonDiameter, sfSymbol: "playpause")
                    SingleButton(diameter: buttonDiameter, sfSymbol: "speaker.slash")
                }
                Capsule()
                    .fill(buttonBackgroundColor)
                    .frame(width: buttonDiameter, height: controlSize.height * 0.195)
                    .overlay(
                        VStack {
                            Image(systemName: "plus")
                                .padding(.vertical, controlSize.height * 0.03)
                            Spacer()
                            Image(systemName: "minus")
                                .padding(.vertical, controlSize.height * 0.04)
                        }
                    )
            }
        }
    }
}

private struct SingleButton: View {
    
    let diameter: CGFloat
    let sfSymbol: String
    
    var body: some View {
        Circle()
            .fill(Color(white: 0.05))
            .overlay(Image(systemName: sfSymbol))
            .frame(width: diameter, height: diameter)
    }
}

struct AppleTVRemoteNative_Previews: PreviewProvider {
    struct AppleTVRemoteNative_Harness: View {
        
        var body: some View {
            HStack(alignment: .top, spacing: 100) {
                AppleTVRemoteNative()
                    .frame(width: 200, height: 800)
            }
            .padding(.vertical, 80)
            .padding(.horizontal, 120)
            .background(Color(white: 0.1))
        }
    }
    
    static var previews: some View {
        AppleTVRemoteNative_Harness()
            .previewLayout(.sizeThatFits)
    }
}

Sorry I missed this comment. You’re welcome Dave! :o)