├── .gitignore ├── LICENSE ├── Package.swift ├── README.md ├── Sources └── TouchSlider │ └── swiftui_touch_slider.swift └── Tests └── TouchSliderTests └── swiftui_touch_sliderTests.swift /.gitignore: -------------------------------------------------------------------------------- 1 | # Created by https://www.toptal.com/developers/gitignore/api/swift 2 | # Edit at https://www.toptal.com/developers/gitignore?templates=swift 3 | 4 | ### Swift ### 5 | # Xcode 6 | # 7 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 8 | 9 | ## User settings 10 | xcuserdata/ 11 | 12 | ## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9) 13 | *.xcscmblueprint 14 | *.xccheckout 15 | 16 | ## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4) 17 | build/ 18 | DerivedData/ 19 | *.moved-aside 20 | *.pbxuser 21 | !default.pbxuser 22 | *.mode1v3 23 | !default.mode1v3 24 | *.mode2v3 25 | !default.mode2v3 26 | *.perspectivev3 27 | !default.perspectivev3 28 | 29 | ## Obj-C/Swift specific 30 | *.hmap 31 | 32 | ## App packaging 33 | *.ipa 34 | *.dSYM.zip 35 | *.dSYM 36 | 37 | ## Playgrounds 38 | timeline.xctimeline 39 | playground.xcworkspace 40 | 41 | # Swift Package Manager 42 | # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies. 43 | # Packages/ 44 | # Package.pins 45 | # Package.resolved 46 | # *.xcodeproj 47 | # Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata 48 | # hence it is not needed unless you have added a package configuration file to your project 49 | # .swiftpm 50 | 51 | .build/ 52 | 53 | # CocoaPods 54 | # We recommend against adding the Pods directory to your .gitignore. 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-------------------------------------------------------------------------------- 1 | // swift-tools-version: 5.9 2 | // The swift-tools-version declares the minimum version of Swift required to build this package. 3 | 4 | import PackageDescription 5 | 6 | let package = Package( 7 | name: "swiftui-touch-slider", 8 | platforms: [.iOS(.v14)], 9 | products: [ 10 | // Products define the executables and libraries a package produces, making them visible to other packages. 11 | .library( 12 | name: "TouchSlider", 13 | targets: ["TouchSlider"] 14 | ) 15 | ], 16 | targets: [ 17 | // Targets are the basic building blocks of a package, defining a module or a test suite. 18 | // Targets can depend on other targets in this package and products from dependencies. 19 | .target( 20 | name: "TouchSlider" 21 | ), 22 | .testTarget( 23 | name: "TouchSliderTests", 24 | dependencies: ["TouchSlider"] 25 | ), 26 | ] 27 | ) 28 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # TouchSlider 2 | 3 | A slider empowering users to effortlessly adjust values by simply touching anywhere. 4 | 5 | --- 6 | 7 | ![CleanShot 2023-10-06 at 11  12 12](https://github.com/muukii/swiftui-touch-slider/assets/1888355/5bfc5c43-2b64-4238-ae6a-b20f1b949b5d) 8 | 9 | 10 | ## Instructions 11 | 12 | ```swift 13 | @State var value: Double = 0 14 | 15 | ... 16 | 17 | TouchSlider( 18 | direction: .horizontal, 19 | value: $touchSlider_value, 20 | speed: 1, // multiplier to track gesture translation. 21 | foregroundColor: Color.red, 22 | backgroundColor: Color(white: 0.5, opacity: 0.3), 23 | cornerRadius: 16 24 | ) 25 | .frame(height: 80) 26 | ``` 27 | -------------------------------------------------------------------------------- /Sources/TouchSlider/swiftui_touch_slider.swift: -------------------------------------------------------------------------------- 1 | import SwiftUI 2 | 3 | public struct TouchSlider: View { 4 | 5 | private struct TrackingState: Equatable { 6 | let beginProgress: Double 7 | } 8 | 9 | var isTracking: Bool { 10 | trackingState != nil 11 | } 12 | 13 | @GestureState private var trackingState: TrackingState? = nil 14 | 15 | @Binding var progress: Double 16 | public let speed: Double 17 | public let direction: Axis 18 | 19 | private let foregroundColor: Color 20 | private let backgroundColor: Color 21 | private let cornerRadius: Double 22 | 23 | public init( 24 | direction: Axis, 25 | value: Binding, 26 | speed: Double = 1, 27 | foregroundColor: Color = Color(white: 0.5, opacity: 0.5), 28 | backgroundColor: Color = Color(white: 0.5, opacity: 0.5), 29 | cornerRadius: Double = .greatestFiniteMagnitude 30 | ) { 31 | self._progress = value 32 | self.direction = direction 33 | self.speed = speed 34 | self.foregroundColor = foregroundColor 35 | self.backgroundColor = backgroundColor 36 | self.cornerRadius = cornerRadius 37 | } 38 | 39 | public var body: some View { 40 | 41 | GeometryReader { proxy in 42 | ZStack { 43 | 44 | backgroundColor 45 | 46 | switch direction { 47 | case .horizontal: 48 | HStack { 49 | foregroundColor 50 | .frame(width: proxy.size.width * max(min(1, progress), 0)) 51 | Spacer(minLength: 0) 52 | } 53 | 54 | case .vertical: 55 | VStack { 56 | Spacer(minLength: 0) 57 | foregroundColor 58 | .frame(height: proxy.size.height * max(min(1, progress), 0)) 59 | } 60 | 61 | } 62 | 63 | } 64 | .clipShape( 65 | RoundedRectangle( 66 | cornerRadius: cornerRadius, 67 | style: .continuous 68 | ) 69 | .inset(by: { if isTracking { 0 } else { 4 }}()) 70 | ) 71 | .animation(.bouncy, value: isTracking) 72 | .animation(.bouncy, value: { () -> Double in 73 | if isTracking { 74 | return 0 75 | } else { 76 | return progress 77 | } 78 | }()) 79 | .gesture( 80 | DragGesture(minimumDistance: 0) 81 | .updating( 82 | $trackingState, 83 | body: { value, trackingState, transaction in 84 | 85 | if trackingState == nil { 86 | trackingState = .init( 87 | beginProgress: progress 88 | ) 89 | 90 | UIImpactFeedbackGenerator(style: .light).impactOccurred() 91 | } 92 | } 93 | ) 94 | .onChanged({ value in 95 | 96 | guard let trackingState else { 97 | return 98 | } 99 | 100 | let constantSpeedProgress = { 101 | switch direction { 102 | case .horizontal: 103 | value.translation.width / proxy.size.width 104 | case .vertical: 105 | -value.translation.height / proxy.size.height 106 | } 107 | }() 108 | 109 | let progressChanges = constantSpeedProgress * speed 110 | 111 | progress = max(min(1, trackingState.beginProgress + progressChanges), 0) 112 | 113 | }) 114 | .onEnded { _ in 115 | UIImpactFeedbackGenerator(style: .soft).impactOccurred() 116 | } 117 | ) 118 | } 119 | .frame(minWidth: 4, minHeight: 4) 120 | 121 | } 122 | 123 | } 124 | 125 | extension Color { 126 | 127 | static var vibrantBlue: Color { 128 | // #0600FF 129 | Color(.displayP3, red: 0.023529411764705882, green: 0.0, blue: 1.0, opacity: 1) 130 | } 131 | 132 | static var vibrantOrange: Color { 133 | // #FF7A00 134 | Color(.displayP3, red: 1.0, green: 0.47843137254901963, blue: 0.0, opacity: 1) 135 | } 136 | 137 | static var vibrantRed: Color { 138 | // #FF3D00 139 | Color(.displayP3, red: 1.0, green: 0.23921568627450981, blue: 0.0, opacity: 1) 140 | } 141 | 142 | static var vibrantPurple: Color { 143 | // #8F00FF 144 | Color(.displayP3, red: 0.5607843137254902, green: 0.0, blue: 1.0, opacity: 1) 145 | } 146 | 147 | static var vibrantYellow: Color { 148 | // #FFA800 149 | Color(.displayP3, red: 1.0, green: 0.6588235294117647, blue: 0.0, opacity: 1) 150 | } 151 | 152 | static var vibrantPink: Color { 153 | // #ED0047 154 | Color(.displayP3, red: 0.9294117647058824, green: 0.0, blue: 0.2784313725490196, opacity: 1) 155 | } 156 | 157 | static var vibrantGreen: Color { 158 | // #00E124 159 | Color(.displayP3, red: 0.0, green: 0.8823529411764706, blue: 0.1411764705882353, opacity: 1) 160 | } 161 | 162 | } 163 | 164 | #if DEBUG 165 | struct BookSlider: View { 166 | 167 | @State var slider_value: Double = 102 168 | @State var touchSlider_value: Double = 0 169 | 170 | var body: some View { 171 | 172 | VStack { 173 | 174 | Spacer() 175 | 176 | VStack { 177 | VStack { 178 | TouchSlider( 179 | direction: .horizontal, 180 | value: $touchSlider_value, 181 | speed: 1, 182 | foregroundColor: Color.vibrantBlue, 183 | backgroundColor: Color(white: 0.5, opacity: 0.3) 184 | ) 185 | .frame(height: 20) 186 | 187 | TouchSlider( 188 | direction: .horizontal, 189 | value: $touchSlider_value, 190 | speed: 1, 191 | foregroundColor: Color.vibrantPink, 192 | backgroundColor: Color(white: 0.5, opacity: 0.3), 193 | cornerRadius: 16 194 | ) 195 | .frame(height: 40) 196 | 197 | TouchSlider( 198 | direction: .horizontal, 199 | value: $touchSlider_value, 200 | speed: 1, 201 | foregroundColor: Color.vibrantRed, 202 | backgroundColor: Color(white: 0.5, opacity: 0.3), 203 | cornerRadius: 16 204 | ) 205 | .frame(height: 80) 206 | } 207 | .frame(maxHeight: .infinity) 208 | 209 | HStack(spacing: 20) { 210 | TouchSlider( 211 | direction: .vertical, 212 | value: $touchSlider_value, 213 | speed: 1, 214 | foregroundColor: Color.vibrantPink, 215 | backgroundColor: Color(white: 0.5, opacity: 0.3) 216 | ) 217 | .frame(width: 20) 218 | 219 | TouchSlider( 220 | direction: .vertical, 221 | value: $touchSlider_value, 222 | speed: 1, 223 | foregroundColor: Color.vibrantPurple, 224 | backgroundColor: Color(white: 0.5, opacity: 0.3), 225 | cornerRadius: 16 226 | ) 227 | .frame(width: 40) 228 | 229 | TouchSlider( 230 | direction: .vertical, 231 | value: $touchSlider_value, 232 | speed: 1, 233 | foregroundColor: Color.vibrantYellow, 234 | backgroundColor: Color(white: 0.5, opacity: 0.3), 235 | cornerRadius: 16 236 | ) 237 | .frame(width: 80) 238 | } 239 | .frame(maxHeight: .infinity) 240 | } 241 | .padding(.horizontal) 242 | 243 | } 244 | .onAppear { 245 | } 246 | } 247 | } 248 | 249 | #Preview { 250 | BookSlider() 251 | } 252 | #endif 253 | -------------------------------------------------------------------------------- /Tests/TouchSliderTests/swiftui_touch_sliderTests.swift: -------------------------------------------------------------------------------- 1 | import XCTest 2 | @testable import TouchSlider 3 | 4 | final class swiftui_touch_sliderTests: XCTestCase { 5 | func testExample() throws { 6 | // XCTest Documentation 7 | // https://developer.apple.com/documentation/xctest 8 | 9 | // Defining Test Cases and Test Methods 10 | // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods 11 | } 12 | } 13 | --------------------------------------------------------------------------------