MyQRCode/MyQrCode/Views/Utils/LaunchScreenView.swift

import SwiftUI

struct LaunchScreenView: View {
    @State private var isAnimating = false
    
    var body: some View {
        ZStack {
            // 背景渐变
            LinearGradient(
                gradient: Gradient(colors: [
                    Color(red: 0.1, green: 0.2, blue: 0.4),
                    Color(red: 0.2, green: 0.3, blue: 0.6)
                ]),
                startPoint: .topLeading,
                endPoint: .bottomTrailing
            )
            .ignoresSafeArea()
            
            VStack(spacing: 30) {
                // 应用图标
                ZStack {
                    Circle()
                        .fill(Color.white.opacity(0.2))
                        .frame(width: 120, height: 120)
                        .scaleEffect(isAnimating ? 1.1 : 1.0)
                        .animation(.easeInOut(duration: 2.0).repeatForever(autoreverses: true), value: isAnimating)
                    
                    // QR码图标
                    Image(systemName: "qrcode")
                        .font(.system(size: 60, weight: .light))
                        .foregroundColor(.white)
                        .rotationEffect(.degrees(isAnimating ? 360 : 0))
                        .animation(.linear(duration: 3.0).repeatForever(autoreverses: false), value: isAnimating)
                }
                
                // 应用名称
                VStack(spacing: 8) {
                    Text("MyQrCode")
                        .font(.system(size: 32, weight: .bold, design: .rounded))
                        .foregroundColor(.white)
                    
                    Text("QR Code Scanner & Generator")
                        .font(.system(size: 16, weight: .medium))
                        .foregroundColor(.white.opacity(0.8))
                }
                .opacity(isAnimating ? 1.0 : 0.0)
                .animation(.easeIn(duration: 1.0).delay(0.5), value: isAnimating)
                
                // 加载指示器
                HStack(spacing: 8) {
                    ForEach(0..<3) { index in
                        Circle()
                            .fill(Color.white)
                            .frame(width: 8, height: 8)
                            .scaleEffect(isAnimating ? 1.2 : 0.8)
                            .animation(
                                .easeInOut(duration: 0.6)
                                .repeatForever(autoreverses: true)
                                .delay(Double(index) * 0.2),
                                value: isAnimating
                            )
                    }
                }
                .opacity(isAnimating ? 1.0 : 0.0)
                .animation(.easeIn(duration: 1.0).delay(1.0), value: isAnimating)
            }
        }
        .onAppear {
            isAnimating = true
        }
    }
}

#Preview {
    LaunchScreenView()
}