iOS SwftUI gestures

gestures.swift

//  ContentView.swift
import SwiftUI

struct ContentView: View {
    @State var dragAmount: CGSize = .zero
    @State var currentMagnificationAmount = 0.0
    @State var finalMagnificationAmount = 1.0
    @State var currentRotationAngle: Angle = .zero
    @State var finalRotationAngle: Angle = .zero
    
    var body: some View {
        List {
            Text("Tap Gesture")
                .onTapGesture {
                    print("Tap Gesture Detected")
                }
            
            Text("Double Tap")
                .onTapGesture(count: 2) {
                    print("Double Tap Detected")
                }

            Text("Triple Tap")
                .onTapGesture(count: 3) {
                    print("Triple Tap Detected")
                }

            Text("Long Press")
                .onLongPressGesture {
                    print("Long Press Detected")
                }
            
            Text("Long Press (5 second wait)")
                .onLongPressGesture(minimumDuration: 5) {
                    print("5 second Long Press Detected")
                }
            
            Text("Drag Gesture")
                .offset(dragAmount)
                .gesture(
                    DragGesture()
                        .onChanged { drag in
                            dragAmount = drag.translation
                        }
                        .onEnded { _ in
                            withAnimation {
                                dragAmount = .zero
                            }
                        }
                )
            
            Text("Magnification Gesture")
                .scaleEffect(currentMagnificationAmount + finalMagnificationAmount)
                .gesture(
                    // Note: This is not a MagnifyGesture()
                    MagnificationGesture()
                        .onChanged { amount in
                            currentMagnificationAmount = amount - 1
                        }
                        .onEnded { amount in
                            finalMagnificationAmount += currentMagnificationAmount
                            currentMagnificationAmount = 0
                        }
                )
            
            Text("Rotation Gesture")
                .rotationEffect(currentRotationAngle + finalRotationAngle)
                .gesture(
                    // Note: this is not a RotateGesture()
                    RotationGesture()
                        .onChanged { angle in
                            currentRotationAngle = angle
                        }
                        .onEnded { angle in
                            finalRotationAngle += currentRotationAngle
                            currentMagnificationAmount = .zero
                        }
                )
        }
    }
}

#Preview {
    ContentView()
}