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| 1 | +// |
| 2 | +// CameraView.swift |
| 3 | +// damus |
| 4 | +// |
| 5 | +// Created by Suhail Saqan on 8/5/23. |
| 6 | +// |
| 7 | + |
| 8 | +import SwiftUI |
| 9 | +import Combine |
| 10 | +import AVFoundation |
| 11 | + |
| 12 | +struct CameraView: View { |
| 13 | + let damus_state: DamusState |
| 14 | + let action: (([MediaItem]) -> Void) |
| 15 | + |
| 16 | + @Environment(\.presentationMode) var presentationMode |
| 17 | + |
| 18 | + @StateObject var model: CameraModel |
| 19 | + |
| 20 | + @State var currentZoomFactor: CGFloat = 1.0 |
| 21 | + |
| 22 | + public init(damus_state: DamusState, action: @escaping (([MediaItem]) -> Void)) { |
| 23 | + self.damus_state = damus_state |
| 24 | + self.action = action |
| 25 | + _model = StateObject(wrappedValue: CameraModel()) |
| 26 | + } |
| 27 | + |
| 28 | + var captureButton: some View { |
| 29 | + Button { |
| 30 | + if model.isRecording { |
| 31 | + withAnimation { |
| 32 | + model.stopRecording() |
| 33 | + } |
| 34 | + } else { |
| 35 | + withAnimation { |
| 36 | + model.capturePhoto() |
| 37 | + } |
| 38 | + } |
| 39 | + UIImpactFeedbackGenerator(style: .medium).impactOccurred() |
| 40 | + } label: { |
| 41 | + ZStack { |
| 42 | + Circle() |
| 43 | + .fill( model.isRecording ? .red : DamusColors.black) |
| 44 | + .frame(width: model.isRecording ? 85 : 65, height: model.isRecording ? 85 : 65, alignment: .center) |
| 45 | + |
| 46 | + Circle() |
| 47 | + .stroke( model.isRecording ? .red : DamusColors.white, lineWidth: 4) |
| 48 | + .frame(width: model.isRecording ? 95 : 75, height: model.isRecording ? 95 : 75, alignment: .center) |
| 49 | + } |
| 50 | + .frame(alignment: .center) |
| 51 | + } |
| 52 | + .simultaneousGesture( |
| 53 | + LongPressGesture(minimumDuration: 0.5).onEnded({ value in |
| 54 | + if (!model.isCameraButtonDisabled) { |
| 55 | + withAnimation { |
| 56 | + model.startRecording() |
| 57 | + model.captureMode = .video |
| 58 | + } |
| 59 | + } |
| 60 | + }) |
| 61 | + ) |
| 62 | + .buttonStyle(.plain) |
| 63 | + } |
| 64 | + |
| 65 | + var capturedPhotoThumbnail: some View { |
| 66 | + ZStack { |
| 67 | + if model.thumbnail != nil { |
| 68 | + Image(uiImage: model.thumbnail.thumbnailImage!) |
| 69 | + .resizable() |
| 70 | + .aspectRatio(contentMode: .fill) |
| 71 | + .frame(width: 60, height: 60) |
| 72 | + .clipShape(RoundedRectangle(cornerRadius: 10, style: .continuous)) |
| 73 | + } |
| 74 | + if model.isPhotoProcessing { |
| 75 | + ProgressView() |
| 76 | + .progressViewStyle(CircularProgressViewStyle(tint: DamusColors.white)) |
| 77 | + } |
| 78 | + } |
| 79 | + } |
| 80 | + |
| 81 | + var closeButton: some View { |
| 82 | + Button { |
| 83 | + presentationMode.wrappedValue.dismiss() |
| 84 | + model.stop() |
| 85 | + } label: { |
| 86 | + HStack { |
| 87 | + Image(systemName: "xmark") |
| 88 | + .font(.system(size: 24)) |
| 89 | + } |
| 90 | + .frame(minWidth: 40, minHeight: 40) |
| 91 | + } |
| 92 | + .accentColor(DamusColors.white) |
| 93 | + } |
| 94 | + |
| 95 | + var flipCameraButton: some View { |
| 96 | + Button(action: { |
| 97 | + model.flipCamera() |
| 98 | + }, label: { |
| 99 | + HStack { |
| 100 | + Image(systemName: "camera.rotate.fill") |
| 101 | + .font(.system(size: 20)) |
| 102 | + } |
| 103 | + .frame(minWidth: 40, minHeight: 40) |
| 104 | + }) |
| 105 | + .accentColor(DamusColors.white) |
| 106 | + } |
| 107 | + |
| 108 | + var toggleFlashButton: some View { |
| 109 | + Button(action: { |
| 110 | + model.switchFlash() |
| 111 | + }, label: { |
| 112 | + HStack { |
| 113 | + Image(systemName: model.isFlashOn ? "bolt.fill" : "bolt.slash.fill") |
| 114 | + .font(.system(size: 20)) |
| 115 | + } |
| 116 | + .frame(minWidth: 40, minHeight: 40) |
| 117 | + }) |
| 118 | + .accentColor(model.isFlashOn ? .yellow : DamusColors.white) |
| 119 | + } |
| 120 | + |
| 121 | + var body: some View { |
| 122 | + NavigationView { |
| 123 | + GeometryReader { reader in |
| 124 | + ZStack { |
| 125 | + DamusColors.black.edgesIgnoringSafeArea(.all) |
| 126 | + |
| 127 | + CameraPreview(session: model.session) |
| 128 | + .padding(.bottom, 175) |
| 129 | + .edgesIgnoringSafeArea(.all) |
| 130 | + .gesture( |
| 131 | + DragGesture().onChanged({ (val) in |
| 132 | + if abs(val.translation.height) > abs(val.translation.width) { |
| 133 | + let percentage: CGFloat = -(val.translation.height / reader.size.height) |
| 134 | + let calc = currentZoomFactor + percentage |
| 135 | + let zoomFactor: CGFloat = min(max(calc, 1), 5) |
| 136 | + |
| 137 | + currentZoomFactor = zoomFactor |
| 138 | + model.zoom(with: zoomFactor) |
| 139 | + } |
| 140 | + }) |
| 141 | + ) |
| 142 | + .onAppear { |
| 143 | + model.configure() |
| 144 | + } |
| 145 | + .alert(isPresented: $model.showAlertError, content: { |
| 146 | + Alert(title: Text(model.alertError.title), message: Text(model.alertError.message), dismissButton: .default(Text(model.alertError.primaryButtonTitle), action: { |
| 147 | + model.alertError.primaryAction?() |
| 148 | + })) |
| 149 | + }) |
| 150 | + .overlay( |
| 151 | + Group { |
| 152 | + if model.willCapturePhoto { |
| 153 | + Color.black |
| 154 | + } |
| 155 | + } |
| 156 | + ) |
| 157 | + |
| 158 | + VStack { |
| 159 | + if !model.isRecording { |
| 160 | + HStack { |
| 161 | + closeButton |
| 162 | + |
| 163 | + Spacer() |
| 164 | + |
| 165 | + HStack { |
| 166 | + flipCameraButton |
| 167 | + toggleFlashButton |
| 168 | + } |
| 169 | + } |
| 170 | + .padding(.horizontal, 20) |
| 171 | + } |
| 172 | + |
| 173 | + Spacer() |
| 174 | + |
| 175 | + HStack(alignment: .center) { |
| 176 | + if !model.mediaItems.isEmpty { |
| 177 | + NavigationLink(destination: Text(model.mediaItems.map { $0.url.absoluteString }.joined(separator: ", "))) { |
| 178 | + capturedPhotoThumbnail |
| 179 | + } |
| 180 | + .frame(width: 100, alignment: .leading) |
| 181 | + } |
| 182 | + |
| 183 | + Spacer() |
| 184 | + |
| 185 | + captureButton |
| 186 | + |
| 187 | + Spacer() |
| 188 | + |
| 189 | + if !model.mediaItems.isEmpty { |
| 190 | + Button(action: { |
| 191 | + action(model.mediaItems) |
| 192 | + presentationMode.wrappedValue.dismiss() |
| 193 | + model.stop() |
| 194 | + }) { |
| 195 | + Text("Upload") |
| 196 | + .frame(width: 100, height: 40, alignment: .center) |
| 197 | + .foregroundColor(DamusColors.white) |
| 198 | + .overlay { |
| 199 | + RoundedRectangle(cornerRadius: 24) |
| 200 | + .stroke(DamusColors.white, lineWidth: 2) |
| 201 | + } |
| 202 | + } |
| 203 | + } |
| 204 | + } |
| 205 | + .frame(height: 100) |
| 206 | + .padding([.horizontal, .vertical], 20) |
| 207 | + } |
| 208 | + } |
| 209 | + } |
| 210 | + } |
| 211 | + } |
| 212 | +} |
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